Summit Midstream Partners Annual Report 2014

Plain-text annual report

Table of ContentsUNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549Form 10-K(Mark One)[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2014or[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from toCommission file number: 001-35666Summit Midstream Partners, LP (Exact name of registrant as specified in its charter)Delaware 45-5200503(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 1790 Hughes Landing Blvd, Suite 500The Woodlands, TX 77380 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: (832) 413-4770 Securities registered pursuant to Section 12(b) of the Act: Title of each class Name of exchange on which registeredCommon Units New York Stock ExchangeIndicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.x Yes o NoIndicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Act.o Yes x NoIndicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 duringthe preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirementsfor the past 90 days. x Yes o NoIndicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required tobe submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period thatthe registrant was required to submit and post such files).x Yes o NoIndicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will notbe contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or anyamendment to this Form 10-K. xIndicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See thedefinitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.Large accelerated filer x Accelerated filer oNon-accelerated filer o (Do not check if a smaller reporting company) Smaller reporting company oIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). o Yes x NoThe aggregate market value of the common units held by non-affiliates of the registrant as of June 30, 2014, was $1,260,163,276.Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.Class As of January 31, 2015Common Units 34,426,513 unitsSubordinated Units 24,409,850 unitsGeneral Partner Units 1,200,651 unitsTABLE OF CONTENTSPART I 1Item 1.Business.1Item 1A.Risk Factors.14Item 1B.Unresolved Staff Comments.40Item 2.Properties.40Item 3.Legal Proceedings.41Item 4.Mine Safety Disclosures.41 PART II 42Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of EquitySecurities.42Item 6.Selected Financial Data.44Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations.46Item 7A.Quantitative and Qualitative Disclosures about Market Risk.72Item 8.Financial Statements and Supplementary Data.72Item 9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.114Item 9A.Controls and Procedures.114Item 9B.Other Information.116 PART III 117Item 10.Directors, Executive Officers and Corporate Governance.117Item 11.Executive Compensation.122Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.137Item 13.Certain Relationships and Related Transactions, and Director Independence.140Item 14.Principal Accounting Fees and Services.141 PART IV 143Item 15.Exhibits, Financial Statement Schedules.143iTable of ContentsFORWARD-LOOKING STATEMENTSInvestors are cautioned that certain statements contained in this report as well as in periodic press releases and certain oral statements made byour officials during our presentations are “forward-looking” statements. Forward-looking statements include, without limitation, any statement thatmay project, indicate or imply future results, events, performance or achievements, and may contain the words “expect,” “intend,” “plan,”“anticipate,” “estimate,” “believe,” “will be,” “will continue,” “will likely result,” and similar expressions, or future conditional verbs such as “may,”“will,” “should,” “would,” and “could.” In addition, any statement concerning future financial performance (including future revenues, earnings orgrowth rates), ongoing business strategies or prospects, and possible actions taken by us or our subsidiaries, are also forward-looking statements.These forward-looking statements involve external risks and uncertainties, including, but not limited to, those described under the section entitled“Risk Factors” included herein.Forward-looking statements are based on current expectations and projections about future events and are inherently subject to a variety of risksand uncertainties, many of which are beyond the control of our management team. All forward-looking statements in this report and subsequentwritten and oral forward-looking statements attributable to us, or to persons acting on our behalf, are expressly qualified in their entirety by thecautionary statements in this paragraph. These risks and uncertainties include, among others:•fluctuations in natural gas, natural gas liquids ("NGLs") and crude oil prices;•the extent and success of drilling efforts, as well as the extent and quality of natural gas and crude oil volumes produced within proximityof our assets;•failure or delays by our customers in achieving expected production in their natural gas and crude oil projects;•competitive conditions in our industry and their impact on our ability to connect hydrocarbon supplies to our gathering and processingassets or systems;•actions or inactions taken or non-performance by third parties, including suppliers, contractors, operators, processors, transporters andcustomers, including the inability or failure of our shipper customers to meet their financial obligations under our gathering agreements;•our ability to acquire any assets owned by Summit Midstream Partners, LLC ("Summit Investments"), which is subject to a number offactors, including Summit Investments deciding, in its sole discretion, to offer us the right to acquire such assets, the ability to reachagreement on acceptable terms, the approval of the conflicts committee of our general partner's board of directors (if appropriate),prevailing conditions and outlook in the natural gas, NGL and crude oil industries and markets, and our ability to obtain financing onacceptable terms from the credit and/or capital markets or other sources;•our ability to consummate acquisitions, successfully integrate the acquired businesses, realize any cost savings and other synergies fromany acquisition;•the ability to attract and retain key management personnel;•commercial bank and capital market conditions and the potential impact of changes or disruptions in the credit and/or capital markets;•changes in the availability and cost of capital, and the results of our financing efforts, including availability of funds in the credit and/orcapital markets;•restrictions placed on us by the agreements governing our debt instruments;•the availability, terms and cost of downstream transportation and processing services;•natural disasters, accidents, weather-related delays, casualty losses and other matters beyond our control;•operational risks and hazards inherent in the gathering, treating and processing of natural gas;•weather conditions and seasonal trends;•timely receipt of necessary government approvals and permits, our ability to control the costs of construction, including costs of materials,labor and rights-of-way and other factors that may impact our ability to complete projects within budget and on schedule;•the effects of existing and future laws and governmental regulations, including environmental and climate change requirements;iiTable of Contents•the effects of litigation;•changes in general economic conditions; and•certain factors discussed elsewhere in this report.Developments in any of these areas could cause actual results to differ materially from those anticipated or projected or cause a significantreduction in the market price of our common units and senior notes.The foregoing list of risks and uncertainties may not contain all of the risks and uncertainties that could affect us. In addition, in light of these risksand uncertainties, the matters referred to in the forward-looking statements contained in this document may not in fact occur. Accordingly, unduereliance should not be placed on these statements. We undertake no obligation to publicly update or revise any forward-looking statements as aresult of new information, future events or otherwise, except as otherwise required by law.iiiTable of ContentsGlossary of Termsadjusted EBITDA: EBITDA plus adjustments related to MVC shortfall payments, impairments and other noncash expenses or losses, less othernoncash income or gainsAMI: area of mutual interest; AMIs require that any production from natural gas wells drilled by our customers within the AMI be shipped on orprocessed by our gathering systemsassociated natural gas: a form of natural gas which is found with deposits of petroleum, either dissolved in the oil or as a free "gas cap" abovethe oil in the reservoirBcf: one billion cubic feetcondensate: a natural gas liquid with a low vapor pressure, mainly composed of propane, butane, pentane and heavier hydrocarbon fractionsconventional resource basin: a basin where natural gas production is developed from a well drilled into a geologic formation in which thereservoir and fluid characteristics permit the crude oil and natural gas to readily flow to the wellbore; also referred to as a conventional resourceplaydelivery point: the point where hydrocarbons are delivered into a gathering system, processing or fractionation facility or downstreamtransportation pipelinedistributable cash flow: adjusted EBITDA plus cash interest received, less cash interest paid, senior notes interest, cash taxes paid andmaintenance capital expendituresdry gas: a gas primarily composed of methane where heavy hydrocarbons and water either do not exist or have been removed through processingEBITDA: net income or loss, plus interest expense, income tax expense, and depreciation and amortization, less interest income and income taxbenefitend users: the ultimate users and consumers of transported energy productsMcf: one thousand cubic feetMMBtu: one million British Thermal UnitsMMcf: one million cubic feetMMcf/d: one million cubic feet per dayMQD: minimum quarterly distribution; our partnership agreement has established a minimum quarterly distribution of $0.40 per unit per quarter, or$1.60 per unit per yearMVC: minimum volume commitment; an MVC contractually obligates a customer to ship on our systems and/or use our processing services for aminimum quantity of natural gasNGLs: natural gas liquids; the combination of ethane, propane, normal butane, iso-butane and natural gasolines that when removed from naturalgas become liquid under various levels of higher pressure and lower temperatureplay: a proven geological formation that contains commercial amounts of hydrocarbonsreceipt point: the point where hydrocarbons are received by or into a gathering system or transportation pipelineresidue gas: the natural gas remaining after being processed or treatedsegment adjusted EBITDA: calculated as adjusted EBITDA excluding the impact of the corporate expenses that we allocate to our reportablesegmentsivTable of Contentsshortfall payment: the payment received from a counterparty when its volume throughput does not meet its MVC for the applicable periodtailgate: refers to the point at which processed residue natural gas and NGLs leave a processing facility for end-use marketsTcf: one trillion cubic feetthroughput volume: the volume of natural gas transported or passing through a pipeline, plant or other facility during a particular period; alsoreferred to as volume throughputunconventional resource basin: a basin where natural gas production is developed from unconventional sources that require hydraulic fracturingas part of the completion process, for instance, natural gas produced from shale formations and coalbeds; also referred to as an unconventionalresource playwellhead: the equipment at the surface of a well used to control the well's pressure; also, the point at which the hydrocarbons and water exit thegroundIndustry OverviewGeneralThe midstream segment of the natural gas industry is the link between the exploration and production of natural gas from the wellhead and thedelivery of the natural gas and its other components to end-use markets. Companies within this industry create value at various stages along thenatural gas value chain by gathering natural gas from producers at the wellhead, separating the hydrocarbons into dry gas and NGLs and thenrouting the separated dry gas and NGLs streams for delivery to end-markets or to the next intermediate stage of the value chain. The followingdiagram illustrates the assets commonly found along the natural gas value chain:Midstream ServicesThe range of services provided by midstream natural gas service companies are generally divided into the following six categories:Gathering. At the initial stages of the midstream value chain, a network of typically small diameter pipelines known as gathering systems directlyconnect to wellheads, pad sites or other receipt points in the production area. These gathering systems transport natural gas from the wellhead todownstream pipelines or a central location for treatingvTable of Contentsand processing. Gathering systems are typically designed to be highly flexible to allow gathering of natural gas at different pressures and scalableto allow for additional production and well connections.Compression. Gathering systems are operated at design pressures that enable the maximum amount of production to be gathered fromconnected wells. Through a mechanical process known as compression, volumes of natural gas at a given pressure are compressed to asufficiently higher pressure, thereby allowing those volumes to be delivered to treating, dehydration, processing and fractionation facilities andultimately the market via a higher pressure downstream pipeline. Since wells produce at progressively lower field pressures as they age, itbecomes necessary to add additional compression over time to maintain throughput across the gathering system.Treating and Dehydration. Treating and dehydration involves the removal of impurities such as water, carbon dioxide, nitrogen and hydrogensulfide, which may be present when natural gas is produced at the wellhead. These impurities must be removed for the natural gas to meet thespecifications for transportation on long-haul intrastate and interstate pipelines. Moreover, end users will not purchase natural gas with high levelsof impurities.Processing. The principal components of natural gas are methane and ethane. Most natural gas also contains varying amounts of other NGLs.Even after treating and dehydration, some natural gas is not suitable for long-haul intrastate and interstate pipeline transportation or commercialuse because it contains NGLs and condensate. This natural gas, referred to as liquids-rich natural gas, must also be processed to remove theseheavier hydrocarbon components. NGLs not only interfere with pipeline transportation, but are also valuable commodities once removed from thenatural gas stream. The removal and separation of NGLs usually takes place in a processing plant and fractionation facility using industrialprocesses that exploit differences in the weights, boiling points, vapor pressures and other physical characteristics of NGL components.Fractionation. Fractionation is the process by which NGLs are separated into individual liquid products for sale to petrochemical and industrial endusers. The NGL components that can be separated in fractionation generally include: ethane, propane, normal butane, iso-butane and naturalgasoline. This mixture of raw NGLs is often referred to as y-grade or raw natural gas liquid mix.Transportation and Storage. After treating and dehydration, processing and fractionation, the natural gas and NGL components are either storedor transported and marketed to end-use markets. Each pipeline system typically has storage capacity located both throughout the pipeline networkand at major market centers to help temper seasonal demand and daily supply-demand shifts.Contractual ArrangementsMidstream natural gas services, other than transportation and storage, are usually provided under contractual arrangements that vary in theamount of commodity price risk they carry. Three typical types of contracts are described below.Fee-Based. Under fee-based arrangements, the service provider typically receives a fee for each unit of natural gas gathered and/or compressedat the wellhead and an additional fee per unit of natural gas treated or processed at its facility. As a result, the service provider bears no directcommodity price risk exposure.Percent-of-Proceeds. Under percent-of-proceeds arrangements, the service provider typically remits to the producers either a percentage of theproceeds from the sale of residue gas and/or NGLs or a percentage of the actual residue gas and/or NGLs at the tailgate. These types ofarrangements expose the gatherer/processor to commodity price risk, as the revenues from the contracts directly correlate with the fluctuatingprice of natural gas condensate and NGLs.Keep-Whole. Under these arrangements, the service provider keeps 100% of the NGLs produced, and the processed natural gas, or value of thenatural gas, is returned to the producer. Since some of the natural gas is used and removed during processing, the processor compensates theproducer for the amount of natural gas used and removed in processing by supplying additional natural gas or by paying an agreed-upon value forthe natural gas utilized. These arrangements have the highest commodity price exposure for the processor because the costs are dependent onthe price of natural gas and the revenues are based on the price of NGLs.viTable of ContentsPART IItem 1. Business.Summit Midstream Partners, LP ("SMLP") is a Delaware limited partnership that completed its initial public offering ("IPO") on October 3, 2012 tobecome a publicly traded entity. Summit Investments is a Delaware limited liability company and the predecessor for accounting purposes (the"Predecessor") of SMLP. References to the "Company," "we," or "our," when used for dates or periods ended on or after the IPO, refer collectivelyto SMLP and its subsidiaries. References to the "Company," "we," or "our," when used for dates or periods ended prior to the IPO, refercollectively to Summit Investments and its subsidiaries. For additional information, see Note 1 to the audited consolidated financial statements.Item 1. Business is divided into the following sections:•Overview•Business Strategies•Competitive Strengths•Our Midstream Assets•Regulation of the Natural Gas and Crude Oil Industries•Environmental Matters•Other InformationOverviewSMLP is a growth-oriented limited partnership focused on developing, owning and operating midstream energy infrastructure assets that arestrategically located in the core producing areas of unconventional resource basins, primarily shale formations, in North America. We providenatural gas gathering, treating and processing services pursuant to primarily long-term and fee-based natural gas gathering and processingagreements with our customers and counterparties. We generally refer to all of the services provided as gathering services.We currently operate in four unconventional resource basins:•the Appalachian Basin, which includes the Marcellus Shale formation in northern West Virginia;•the Williston Basin, which includes the Bakken and Three Forks shale formations in northwestern North Dakota;•the Fort Worth Basin, which includes the Barnett Shale formation in north-central Texas; and•the Piceance Basin, which includes the Mesaverde formation and the Mancos and Niobrara shale formations in western Colorado andeastern Utah.Our systems and the basins they serve are as follows:•the Mountaineer Midstream system, which serves the Appalachian Basin;•the Bison Midstream system, which serves the Williston Basin;•the DFW Midstream system, which serves the Fort Worth Basin; and•the Grand River system, which serves the Piceance Basin.We have a diverse group of customers and counterparties comprising affiliates and/or subsidiaries of some of the largest crude oil and natural gasproducers in North America. Our anchor customers and the systems they serve are as follows:•Antero Resources Corp. ("Antero"), which is the anchor for the Mountaineer Midstream system ("Mountaineer Midstream");•EOG Resources, Inc. ("EOG") and Oasis Petroleum, Inc. ("Oasis"), which are the anchors for the Bison Midstream system ("BisonMidstream");•Chesapeake Energy Corporation ("Chesapeake"), which is the anchor for the DFW Midstream system ("DFW Midstream"); and1Table of Contents•Encana Corporation ("Encana") and WPX Energy, Inc. ("WPX"), which are the anchors for the Grand River system ("Grand River").A significant percentage of our revenue is attributable to these anchor customers. (For additional information on customer concentrations, seeNote 11 to the audited consolidated financial statements.)Our results are driven primarily by the volumes of natural gas that we gather, treat and process across our systems. As of December 31, 2014, ourgathering systems had more than 2,300 miles of pipeline and over 250,000 horsepower of compression. During 2014, we gathered an average of1,418 MMcf/d of natural gas.We generate a substantial majority of our revenue under long-term, primarily fee-based natural gas gathering agreements. The fee-based nature ofthese agreements enhances the stability of our cash flows by limiting our direct commodity price exposure. During the year ended December 31,2014, we generated approximately 94% of our revenue, net of pass-through items, from fee-based gathering services. In addition, substantially allof our gas gathering and processing agreements include areas of mutual interest ("AMIs"). Our AMIs cover more than 1.4 million acres in theaggregate.Certain of our gas gathering and processing agreements include minimum volume commitments or minimum revenue commitments (collectivelyreferred to as "MVCs"). To the extent the customer does not meet its MVC, it must make payments to cover the shortfall of natural gas notshipped or processed, either on a monthly, quarterly or annual basis. We have designed our MVC provisions to ensure that we will generate acertain amount of revenue from each customer over the life of the respective gas gathering or processing agreement, whether by collectinggathering or processing fees on actual throughput or from cash payments to cover any MVC shortfall. As of December 31, 2014, we had remainingMVCs totaling 3.8 Tcf. Our MVCs have a weighted-average remaining life of 9.7 years (assuming minimum throughput volume for the remainder ofthe term) and average approximately 1,248 MMcf/d through 2018.We believe that we are positioned for growth through the increased utilization and further development of our existing midstream assets. Inaddition, we intend to grow our business through the execution of new, and the expansion of existing, strategic partnerships with large producers toprovide midstream services for their upstream exploration and production projects. We also intend to continue expanding our operations anddiversifying our geographic footprint through asset acquisitions from Summit Investments and third parties, although Summit Investments has noobligation to offer any assets to us and we have no obligation to acquire the assets that they offer to us, if any.Organization and Results of OperationsSMLP was formed in May 2012 in anticipation of our IPO. Since the IPO, we have issued additional common units and general partner interests inconnection with two drop down transactions, one third-party acquisition and certain unit-based compensation awards. As of December 31, 2014,Summit Investments, through a wholly owned subsidiary, held 5,293,571 SMLP common units, 24,409,850 SMLP subordinated units and1,200,651 general partner units representing a 2% general partner interest in SMLP, along with all of the incentive distribution rights ("IDRs")issued by SMLP. For additional information, see Notes 1, 8 and 15 to the audited consolidated financial statements.Summit Investments was formed in 2009 by members of our management team and our Sponsor, Energy Capital Partners. Due to its ownershipinterest in Summit Investments and its representation on Summit Investments' board of managers, Energy Capital Partners controls our generalpartner and its activities, and as a result, SMLP.We currently conduct our natural gas gathering, treating and processing operations in the midstream sector through our four natural gas gatheringsystems, each of which represents one of our four reportable segments. Our reportable segments reflect the way in which we internally report thefinancial information used to make decisions and allocate resources in connection with our operations. The primary assets of each of ourreportable segments consist of natural gas gathering systems and related property, plant and equipment.Our financial results are primarily driven by the volumes of natural gas that we gather, treat and process across our systems and our managementof expenses. We use a variety of financial and operational metrics to analyze our performance, including among others, throughput volume,revenues, operation and maintenance expense, EBITDA, adjusted EBITDA and distributable cash flow. For additional information on our results ofoperations, reportable segment disclosures, EBITDA, adjusted EBITDA and distributable cash flow, see Item 6. Selected Financial Data, Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A"), and the audited consolidated financialstatements and notes thereto included in this report.2Table of ContentsOur SponsorEnergy Capital Partners, together with its affiliated funds, is a private equity firm with over $13.0 billion in capital commitments that is focused oninvesting in North America's energy infrastructure. Energy Capital Partners has significant energy and financial expertise to complement itsinvestment in us, including investments in the power generation, midstream oil and gas, electric transmission, energy equipment and services,environmental infrastructure and other energy related sectors.Summit Investments, which indirectly owns our general partner, has an inventory of midstream assets and joint venture interests comprising morethan $2.3 billion of previous acquisitions and current and future development projects. In addition to its midstream assets located in the Denver-Julesburg ("DJ") Basin in Colorado, the Utica Shale in Ohio, and the Williston Basin in North Dakota, Summit Investments also participates in ajoint venture which is developing a liquids-rich natural gas gathering system, a dry natural gas gathering system and a condensate stabilizationfacility in the southeastern core of the Utica Shale. Each of these assets provide us with opportunities for customer and service offeringdiversification into crude oil and/or produced water gathering, dry gas gathering and liquids-rich natural gas gathering and processing. Furthermore,we believe these assets present an opportunity to further diversify our operations geographically. While these assets have not been contributed toSMLP and Summit Investments or its affiliates is not obligated to sell these assets to us, we believe they represent a future opportunity forexecution of our business strategy.Business StrategiesOur principal business strategy is to increase the amount of cash distributions we make to our unitholders over time. Our plan for continuing toexecute this strategy includes the following key components:•Pursuing accretive acquisition opportunities from Summit Investments. We intend to pursue opportunities to expand our asset baseby acquiring midstream assets and joint venture interests that are owned, operated and under development by Summit Investments. Inaddition to its significant ownership interest in us, Summit Investments owns and operates, and seeks to acquire and develop, crude oil,natural gas and water-related midstream assets in service and under construction in geographic areas in which we currently operate aswell as in geographic areas outside of our current areas of operations. For example, in December 2014, Summit Investments announcedan agreement to develop and operate a new 500 MMcf/d natural gas gathering system in the Utica Shale ("Summit Utica"). Summit Uticawill gather, compress and deliver natural gas produced by XTO Energy Inc. into Regency Energy Partners LP's 2.1 Bcf/d high-pressureUtica Ohio River Trunkline Project, which is currently under construction, and other downstream delivery points. While SummitInvestments has indicated that it intends to offer us the opportunity to acquire its interests in its various midstream assets, it is not underany contractual obligation to do so and we are unable to predict whether or when such opportunities may arise. In its role as a midstreamdevelopment vehicle for our Sponsor, we believe that Summit Investments’ development efforts mitigate potential development and cashflow timing risks associated with large-scale greenfield development projects that would otherwise be borne by us.•Maintaining our focus on fee-based revenue with minimal direct commodity price exposure. As we expand our business, we intendto maintain our focus on providing midstream energy services under fee-based arrangements. Our midstream services are provided underprimarily long-term and fee-based contracts with original terms up to 25 years. Currently, all of the contracts associated with assets ownedand being developed by Summit Investments are fee based. We believe that our focus on fee-based revenues with minimal directcommodity exposure is essential to maintaining stable cash flows.•Capitalizing on organic growth opportunities to maximize throughput on our existing systems. We intend to continue to leverageour management team's expertise in constructing, developing and optimizing our midstream assets to grow our business through organicdevelopment projects. We believe that our broad and geographically diverse operating footprint provides us with a competitive advantageto pursue organic development projects that are designed to extend our geographic reach, diversify our customer base, expand ourmidstream service offerings, increase the number of our hydrocarbon receipt points and maximize volume throughput.•Diversifying our asset base by expanding our midstream service offerings and exploring acquisition and developmentopportunities in various geographic areas. Our natural gas gathering operations in the Marcellus, Bakken, Three Forks and Barnettshale plays and the Piceance Basin currently represent our core business. However, in the future, we intend to diversify our serviceofferings into crude oil and3Table of Contentsproduced water gathering. We also intend to diversify our operations into other geographic regions, through both greenfield developmentprojects and acquisitions from affiliated and non-affiliated parties.•Partnering with producers to provide midstream services for their development projects in high-growth, unconventional resourceplays. We seek to promote commercial relationships with established and well-capitalized producers that are willing to serve as anchorcustomers and commit to long-term MVCs and AMIs. We will continue to pursue partnership opportunities with established producers todevelop new midstream energy infrastructure in unconventional resource basins that we believe will complement our existing assetsand/or enhance our overall business by facilitating our entry into new basins. These opportunities generally consist of a strategic acreageposition in an unconventional resource play that is well-positioned for accelerated production but has limited existing midstream energyinfrastructure to support such growth.Competitive StrengthsWe believe that we will be able to execute the components of our principal business strategy successfully because of the following competitivestrengths:•Strategically located assets in core areas of prolific unconventional resource basins supported by partnerships with largeproducers. We believe our assets are strategically positioned within the core areas of four established unconventional resource basins.The geologic formations in the basins served by our assets have either relatively low drilling and completion costs, highly economicproduction profiles, or a combination of both which incent producers to develop more actively than in more marginal areas.•Fee-based revenues underpinned by long-term contracts with AMIs and MVCs. A substantial majority of our revenue for the yearended December 31, 2014 was generated under long-term and fee-based gas gathering and processing agreements. We believe that long-term, fee-based gas gathering and processing agreements enhance the stability of our cash flows by limiting our direct commodity priceexposure.•Capital structure and financial flexibility. At December 31, 2014, we had $808.0 million of total indebtedness and the unused portion ofour $700.0 million amended and restated senior secured revolving credit facility (the "revolving credit facility") totaled $492.0 million. Underthe terms of our revolving credit facility, our total leverage ratio (total net indebtedness to consolidated trailing 12-month EBITDA, asdefined in the credit agreement) was approximately 3.9 to 1.0 at December 31, 2014, which compares with a total leverage ratio upper limitof not more than 5.0 to 1.0, or not more than 5.5 to 1.0 for up to 270 days following certain acquisitions (as defined in the creditagreement).•Experienced management team with a proven record of asset acquisition, construction, development, operations and integrationexpertise. Our senior leadership team has an average of 20 years of energy experience and a proven track record of identifying,consummating and integrating significant acquisitions in addition to partnering with major producers to construct and develop midstreamenergy infrastructure.•Relationship with a large and committed financial sponsor. Our Sponsor, Energy Capital Partners, is an experienced energy investorwith a proven track record of making substantial, long-term investments in high-quality energy assets. We believe that the relationship withour Sponsor is a competitive advantage as it brings not only significant financial and management experience, but also numerousrelationships throughout the energy industry that we believe will continue to benefit us as we seek to grow our business.Our Midstream AssetsOur midstream assets currently consist of four natural gas gathering systems:•Mountaineer Midstream in northern West Virginia;•Bison Midstream in northwestern North Dakota;•DFW Midstream in north-central Texas; and•Grand River in western Colorado and eastern Utah.We compete with other midstream companies, producers and intrastate and interstate pipelines. Competition for natural gas volumes is primarilybased on reputation, commercial terms, service levels, access to end-use markets,4Table of Contentslocation and available capacity. We may also face competition to gather production drilled outside of our AMIs and attract producer volumes to ourgathering systems. Additionally, we could face incremental competition to the extent we make acquisitions.We earn revenue by providing natural gas gathering, treating and processing services pursuant to primarily long-term and fee-based natural gasgathering and processing agreements with some of the largest and most active producers in North America. The fee-based nature of theseagreements enhances the stability of our cash flows by limiting our direct commodity price exposure.The significant features of our gas gathering and processing agreements and the gathering systems to which they relate are discussed in moredetail below. For additional information on a consolidated basis and by reportable segment, see the "Results of Operations" section in MD&A.Areas of Mutual InterestA substantial majority of our gathering and processing agreements contain AMIs. The AMIs generally have original terms up to 25 years andrequire that any production by our customers within the AMIs will be shipped on our gathering systems. Our customers do not have leasedproduction acreage that currently cover our entire AMIs but, to the extent that our customers lease additional acreage in the future within our AMIs,natural gas produced by our customers from that leased acreage is required to be gathered and/or processed by our systems.Under certain of our gas gathering agreements, we have agreed to construct pipeline laterals to connect our gathering systems to pad sites locatedwithin the AMI. However, we may choose not to participate in a discretionary opportunity presented by a customer because we believe that theproject would not meet our economic return expectations. Under this scenario, the customer may, in certain circumstances, construct theadditional infrastructure and sell it to us at a price equal to their cost plus an applicable margin, or, in some cases, we may release the relevantacreage dedication from the AMI.Minimum Volume CommitmentsMany of our gas gathering and processing agreements contain MVCs pursuant to which our customers agree to ship or process a minimumvolume of natural gas on our gathering systems, or, in some cases, to pay a minimum monetary amount, over certain periods during the term ofthe MVC. The original terms of our MVCs range from two to 15 years and had a weighted-average remaining life of 9.7 years as of December 31,2014. In addition, certain of our customers have an aggregate MVC, which is a total amount of natural gas that the customer has agreed to ship orprocess on our systems (or an equivalent monetary amount) over the MVC term. In these cases, once a customer achieves its aggregate MVC,any remaining future MVCs will terminate and the customer will then simply pay the applicable gathering or processing rate multiplied by the actualthroughput volumes shipped or processed.In addition to AMIs, MVCs are beneficial in connection with the development and ongoing operation of a gathering system because they provide acontracted portfolio at start up and limit our direct commodity price exposure during the life of the gathering system.For additional information on our MVCs, see the "Critical Accounting Estimates" section in MD&A and Notes 2 and 6 to the audited consolidatedfinancial statements.Mountaineer MidstreamIn June 2013, we acquired certain high-pressure natural gas gathering pipelines and compression assets located in the liquids-rich window of theMarcellus Shale Play from an affiliate of MarkWest Energy Partners, L.P. (“MarkWest”). We refer to these assets as the Mountaineer Midstreamsystem. The Mountaineer Midstream system, which operates in the Appalachian Basin, benefits from its location in Doddridge and Harrisoncounties in West Virginia where it gathers natural gas under a long-term, fee-based contract with Antero. The Mountaineer Midstream systemconsists of newly constructed, high-pressure natural gas gathering pipelines ranging from 8 inches to 20 inches in diameter and two compressorstations. This rich-gas gathering and compression system serves as a critical inlet to MarkWest's Sherwood Processing Complex, a primarydestination for liquids-rich natural gas in northern West Virginia. The Mountaineer Midstream system currently provides our midstream services forthe Marcellus Shale reportable segment.During the third quarter of 2014, throughput capacity was increased to 1,050 MMcf/d to support Antero's current and future anticipated drillingactivities. We expect volumes to continue to grow on this system during 2015 as new Antero wells are connected by other third parties upstreamof our system.5Table of ContentsThe following table provides information regarding our Mountaineer Midstream system as of December 31, 2014.Gathering system Approximatelength (Miles) Compression(Horsepower) Throughputcapacity(MMcf/d)Mountaineer Midstream (1) 49 21,330 1,050__________(1) Contract terms related to AMIs and MVCs are excluded for confidentiality purposes.In November 2013, we amended our original fee-based natural gas gathering agreement with Antero whereby we agreed to construct approximatelynine miles of high-pressure, 20-inch pipeline on the Mountaineer Midstream system (the "Zinnia Loop"). The Zinnia Loop project is underpinned bya new, 12-year, minimum revenue commitment from Antero, which extends the original term of the contract through 2026. With this expansion, webelieve the Mountaineer Midstream system will enhance its strategic position as a primary source of natural gas deliveries to the SherwoodProcessing Complex.Bison MidstreamIn June 2013, we acquired certain associated natural gas gathering pipeline, dehydration and compression assets in the Williston Basin innorthwestern North Dakota from a subsidiary of Summit Investments. We refer to these assets as the Bison Midstream system. The BisonMidstream system gathers, compresses and treats associated natural gas that exists in the crude oil stream produced from the Bakken and ThreeForks shale formations. These formations are primarily targeted for crude oil production and producer drilling decisions and activity are basedlargely on the prevailing price of crude oil. As such, natural gas volume throughput is also impacted by the prevailing price of crude oil. Our gasgathering agreements for the Bison Midstream system are long-term, primarily fee-based, contracts ranging from five years to 15 years andprovide diversity of commodity price exposure for us relative to our other natural gas midstream operations. The Bison Midstream system currentlyprovides our midstream services for the Williston Basin reportable segment.The Bison Midstream system, which is located in Mountrail and Burke counties, consists of low- and high-pressure pipeline and six compressorstations and includes gathering lines ranging from 3 inches to 10 inches in diameter. Natural gas gathered on the Bison Midstream system isdelivered to Aux Sable Midstream LLC's ("Aux Sable") Palermo Conditioning Plant in Palermo, North Dakota and then delivered to its 2.1 Bcf/dnatural gas processing plant in Channahon, Illinois.Total throughput capacity on the system is in the process of being expanded from 26 MMcf/d to 32 MMcf/d with the installation of newcompression which is expected to be completed by the end of the first quarter of 2015. Volume throughput on the Bison Midstream system isunderpinned by MVCs from its anchor customers, EOG and Oasis.The following table provides information regarding our Bison Midstream system as of December 31, 2014.Gathering system Approximatelength(Miles) Compression(Horsepower) Throughputcapacity(MMcf/d) ApproximateAMIs(Acres) Averagedaily MVCsthrough2018(MMcf/d) RemainingMVCs (Bcf) Weighted-averageremainingcontract life(Years) (1)Bison Midstream 391 9,770 26 676,500 12 20 5.6__________(1) Weighted average based on total remaining MVC (total remaining MVCs multiplied by average rate).In addition to its fee-based gas gathering agreement with EOG and percent-of-proceeds gas gathering agreement with Oasis, the Bison Midstreamsystem is also supported by other fee-based gas gathering agreements. As of December 31, 2014, these gas gathering agreements had AMIsextending through 2027. We continue to develop the Bison Midstream system to extend our gathering reach, increase capacity, increase ourreceipt points and maximize throughput. Since its acquisition, we have increased capacity and improved system reliability by adding pipeline,continuing to connect additional pad sites located within our AMIs, and installing additional compression.DFW MidstreamIn September 2009, we acquired approximately 17 miles of pipeline and 2,500 horsepower of electric-drive compression in north-central Texas fromEnergy Future Holdings Corp. ("Energy Future Holdings") and Chesapeake. We refer to these assets as the DFW Midstream system. Since theinitial acquisition, we have expanded this system by adding pipeline and continuing to connect additional pad sites located within our AMIs. Inaddition, we have expanded throughput capacity by installing additional electric-drive compression for which we6Table of Contentsretain a small fixed percentage of the natural gas that we receive to offset the costs we incur to operate our electric-drive compressors. The DFWMidstream system is primarily located in southeastern Tarrant County, the largest natural gas producing county in Texas. We consider this area tobe the core of the core of the Barnett Shale because of the quality of the geology and the high production profile of the wells drilled to date. TheDFW Midstream system includes gathering lines ranging from 4 inches to 30 inches in diameter and is located along existing electric transmissioncorridors and under both private and public property. It currently has six primary interconnections with third-party, intrastate pipelines. Theseinterconnections enable us to connect our customers, directly or indirectly, with the major natural gas market hubs of Waha, Carthage, and Katy inTexas, and Perryville and Henry Hub in Louisiana. The DFW Midstream system currently provides our midstream services for the Barnett Shalereportable segment.The DFW Midstream system benefits from its location in southeastern Tarrant County, Texas, which is commonly referred to as the core of theBarnett Shale. Based on peak month average daily production rates sourced from the Railroad Commission of Texas as of December 2014, thisarea contains the most prolific wells in the Barnett Shale. For example, the two largest and five of the ten largest wells drilled in the Barnett Shale(based on peak month average daily rates) are connected to the DFW Midstream system.We designed the DFW Midstream system to benefit from incremental volumes arising from high-density, infill drilling on existing pad sites that arealready connected to the gathering system and as such would not require significant additional capital expenditures. Development of the DFWMidstream system has enabled our customers to efficiently produce natural gas by utilizing horizontal drilling techniques from pad sites alreadyconnected in our AMIs. Given the urban nature of southeastern Tarrant County, we expect that the majority of future natural gas drilling in this areawill occur from existing pad sites. We believe that the AMIs underpinning our system are substantially undeveloped compared with other areas inthe Barnett Shale due to the historical lack of gathering infrastructure.The following table provides information regarding our DFW Midstream system as of December 31, 2014.Gathering system Approximatelength (Miles) Compression(Horsepower) Throughputcapacity(MMcf/d) ApproximateAMIs(Acres) Average dailyMVCsthrough 2018(MMcf/d) RemainingMVCs (Bcf) Weighted-averageremainingcontract life(Years) (1)DFW Midstream 128 66,100 480 108,300 131 191 4.9__________(1) Weighted average based on total remaining MVC (total remaining MVCs multiplied by average rate).In September 2009, we entered into a long-term, fee-based gas gathering agreement with Chesapeake as our anchor customer that included a 20-year area of mutual interest covering approximately 95,000 acres and a 10-year MVC totaling approximately 450 Bcf. In addition to Chesapeake,the DFW Midstream system is underpinned by other long-term, fee-based gas gathering agreements.We continue to develop the DFW Midstream system to extend our gathering reach, diversify our customer base, increase our receipt points andmaximize throughput. For example, in February 2014, we commissioned a 150 gallon per minute natural gas treating facility that allows us toprovide treating services that would otherwise be provided to our customers by third parties. Additionally, in September 2014, we acquired certainnatural gas gathering assets which increased throughput capacity on the DFW Midstream system by approximately 30 MMcf/d. We believe ourstrategic location in the Barnett Shale provides us with a competitive advantage to add incremental throughput with limited additional investmentcapital due to the anticipated future, high-density, infill drilling from our customers on connected pad sites and nearby pad sites that have yet to beconnected given the urban landscape and the efforts of our producer customers to minimize their surface footprint. Furthermore, we believe theproduction profile of wells drilled within our AMIs and flowing on the DFW Midstream system will continue to attract drilling activity over the longterm as producers become more selective in their drilling locations and focus on the core areas of certain basins to maximize their returns.Grand RiverIn October 2011, Grand River acquired certain natural gas gathering pipeline, dehydration and compression assets in the Piceance Basin inwestern Colorado from Encana Oil & Gas (USA) Inc., a subsidiary of Encana. These assets gather natural gas from the Mesaverde formation andthe Mancos and Niobrara shale formations located within the Piceance Basin in western Colorado. They are primarily located in Garfield County,the largest natural gas7Table of Contentsproducing county in Colorado. We refer to the assets that we acquired in October 2011 as the Legacy Grand River system.In March 2014, we acquired 100% of the interests in Red Rock Gathering Company, LLC ("Red Rock Gathering") from a subsidiary of SummitInvestments. Summit Investments acquired the natural gas gathering pipeline, dehydration, compression and processing assets in the PiceanceBasin that comprise the Red Rock Gathering system from a subsidiary of Energy Transfer Partners, L.P. in September 2012. These assets gatherand process natural gas from the Mesaverde formation and the emerging Mancos and Niobrara shale formations located within the Piceance Basinin western Colorado and eastern Utah. They are primarily located in Rio Blanco and Mesa counties in Colorado and Uintah and Grand counties inUtah. We refer to the assets that we acquired in March 2014 as the Red Rock Gathering, and collectively with the Legacy Grand River system, asthe Grand River system. The Grand River system currently provides our midstream services for the Piceance Basin reportable segment.Natural gas gathered and/or processed on the Grand River system is compressed, dehydrated, processed and/or discharged to downstreampipelines serving (i) Enterprise's Meeker Natural Gas Processing Plant, a 1.8 Bcf/d processing facility located in Meeker, Colorado, (ii) WilliamsPartners L.P.'s Northwest Pipeline system, and (iii) Kinder Morgan, Inc.'s TransColorado Pipeline system. Processed NGLs from the Grand Riversystem are injected into Enterprise's Mid-America Pipeline system.The Grand River system is primarily a low-pressure gathering system that was originally designed to gather natural gas produced from directionalwells targeting the liquids-rich Mesaverde formation. The Mesaverde is a shallow, tight sands geologic formation that producers have targeted withdirectional drilling for several decades. We also gather natural gas from our customers' wells targeting the emerging Mancos and Niobrara shaleformations, which underlie the Mesaverde formation, via a new medium-pressure gathering system. Based on our customers' current drillingactivities, we anticipate that the majority of our near-term throughput on the Grand River system will continue to originate from the Mesaverdeformation. We expect to continue to pursue additional volumes on the low-pressure system to more fully utilize the existing throughput capacity. Inaddition, we believe that the Grand River system is optimally located for expansion to gather production from the emerging Mancos and Niobrarashale formations.The following table provides information regarding our Grand River system as of December 31, 2014.Gathering system Approximatelength (Miles) Compression(Horsepower) Throughputcapacity(MMcf/d) ApproximateAMIs(Acres) Average dailyMVCsthrough 2018(MMcf/d) RemainingMVCs (Bcf) Weighted-averageremainingcontract life(Years) (1)Grand River 1,780 154,150 1,153 670,960 726 2,143 10.4__________(1) Weighted average based on total remaining MVC (total remaining MVCs multiplied by average rate).In October 2011, we entered into a long-term, fee-based gas gathering agreement with Encana as our anchor customer that included a 25-year AMIcovering approximately 187,000 acres and a 15-year MVC totaling approximately 1,558 Bcf. In conjunction with Summit Investments' acquisitionof Red Rock Gathering, we assumed fee-based agreements with Black Hills Exploration and Production, Inc. ("Black Hills") and a subsidiary ofWPX. Both agreements include long-term acreage dedications and collectively provide more than 375 Bcf of MVCs. Certain of the Grand Riversystem's other gas gathering and processing agreements include MVCs with original terms ranging from from two to 15 years and areas of mutualinterest with original terms up to 25 years.In connection with the Black Hills agreement, we constructed a 20 MMcf/d cryogenic processing plant and related gas gathering infrastructure inthe DeBeque, Colorado area to support Black Hills' development of its liquids-rich Mancos and Niobrara acreage. In connection with the WPXagreement, we agreed to expand our gathering and compression services by constructing gas gathering infrastructure to gather new WPXproduction in the Rifle, Colorado area. The processing plant in DeBeque was commissioned in March 2014 and the WPX project is in process anddevelopment is expected to continue over the next few years. We intend to expand the Grand River system by connecting additional pad siteswithin our areas of mutual interest, adding new customers, and acquiring nearby gathering systems. In addition to Encana, WPX and Black Hills,the Grand River system is underpinned by other long-term, fee-based gas gathering and compression agreements.For additional information relating to our business and gathering systems as well as the recent decline in natural gas and crude oil prices and ourcommodity price exposure, see the "Trends and Outlook—Natural gas, NGL and crude oil supply and demand dynamics" and "Results ofOperations" sections in MD&A.8Table of ContentsRegulation of the Natural Gas and Crude Oil IndustriesGeneral. Sales by producers of natural gas, crude oil, condensate, and NGLs are currently made at market prices. However, gathering andtransportation services are subject to various types of regulation, which may affect certain aspects of our business and the market for ourservices. The Federal Energy Regulatory Commission ("FERC") regulates the transportation of natural gas in interstate commerce and theinterstate transportation of crude oil, petroleum products and NGLs. FERC regulation includes reviewing and accepting or approving rates and otherterms and conditions for such transportation services. FERC is also authorized to prevent and sanction market manipulation in natural gasmarkets while the Federal Trade Commission is authorized to prevent and sanction market manipulation in petroleum markets. State and municipalregulations may apply to the production and gathering of natural gas, the construction and operation of natural gas and crude oil facilities, and therates and practices of gathering systems and intrastate pipelines.Regulation of Oil and Natural Gas Exploration, Production and Sales. Sales of crude oil and NGLs are not currently regulated and aretransacted at market prices. In 1989, the U.S. Congress enacted the Natural Gas Wellhead Decontrol Act, which removed all remaining price andnon-price controls affecting wellhead sales of natural gas. FERC, which has the authority under the Natural Gas Act to regulate the prices andother terms and conditions of the sale of natural gas for resale in interstate commerce, has issued blanket authorizations for all gas resellerssubject to its regulation, except interstate pipelines, to resell natural gas at market prices. Either Congress or FERC (with respect to the resale ofgas in interstate commerce), however, could re-impose price controls in the future.Exploration and production operations are subject to various types of federal, state and local regulation, including, but not limited to, permitting,well location, methods of drilling, well operations, and conservation of resources. While these regulations do not directly apply to our business,they may affect our customers' ability to produce natural gas.Regulation of the Gathering and Transportation of Natural Gas. We believe that our gas pipeline facilities qualify as gathering facilities that areexempt from the jurisdiction of FERC under the Natural Gas Act and the Natural Gas Policy Act of 1978 (the "NGPA"), although we are subject toFERC's anti-market manipulation regulations. The distinction between federally unregulated gathering facilities and FERC-regulated transmissionpipelines has been the subject of extensive litigation and changes in the policies and interpretations of laws and regulations. In addition, the statusof any individual gathering system may be determined by FERC on a case-by-case basis, although FERC has made no determinations as to thestatus of our facilities. Consequently, the classification and regulation of gathering systems (including some of our pipelines) could change basedon future determinations by FERC or the courts.Intrastate pipelines, which may include some pipelines that perform gathering functions, may be subject to safety regulation by the U.S.Department of Transportation although typically state regulatory authorities (operating under a federal certification) perform this function. Stateregulatory authorities also have jurisdiction over the rates and practices of intrastate pipelines and gathering systems, including requirements forratable takes or non-discriminatory access to pipeline services. The basis for state regulation and the degree of regulatory oversight of gatheringsystems and intrastate pipelines varies from state to state. In Texas, we are regulated as a gas utility and have filed tariffs with the RailroadCommission of Texas to establish rates and terms of service for our DFW Midstream system assets. We have not been required to file a tariff inColorado for our Grand River system assets, nor have we been required to file a tariff in West Virginia or North Dakota for our operations in thosestates, although regulatory authorities in North Dakota have recently issued new rules requiring the submission of shape files to identify thelocation of underground gathering pipelines. The states in which we operate have adopted complaint-based regulation that allows natural gasproducers and shippers to file complaints with state regulators in an effort to resolve access issues and rate grievances, among other matters.State authorities in Texas, Colorado, North Dakota, and West Virginia generally have not initiated investigations of the rates or practices ofgathering systems or intrastate pipelines in the absence of a complaint. State regulation of intrastate pipelines continues to evolve and maybecome more stringent in the future.Natural gas production, gathering and transportation, including the construction of new gathering facilities and expansion of existing gatheringfacilities may also be subject to local regulation, such as approval and permit requirements.Anti-Market Manipulation Rules. We are subject to the anti-market manipulation provisions in the Natural Gas Act and the NGPA, as amendedby the Energy Policy Act of 2005, which authorize FERC to impose fines of up to $1,000,000 per day per violation of the Natural Gas Act, theNGPA, or their implementing regulations. In addition, the Federal Trade Commission holds statutory authority under the Energy Independence andSecurity Act of 20079Table of Contentsto prevent market manipulation in petroleum markets, including the authority to request that a court impose fines of up to $1,000,000 per violation.These agencies have promulgated broad rules and regulations prohibiting fraud and manipulation in oil and gas markets. The Commodity FuturesTrading Commission (the "CFTC") is directed under the Commodity Exchange Act to prevent price manipulations in the commodity and futuresmarkets, including the energy futures markets. Pursuant to statutory authority, the CFTC has adopted anti-market manipulation regulations thatprohibit fraud and price manipulation in the commodity and futures markets. The CFTC also has statutory authority to seek civil penalties of up tothe greater of $1,000,000 per day per violation or triple the monetary gain to the violator for violations of the anti-market manipulation sections ofthe Commodity Exchange Act. We are also subject to various reporting requirements that are designed to facilitate transparency and preventmarket manipulation.Safety and Maintenance. We are subject to regulation by the U.S. Department of Transportation under the Natural Gas Pipeline Safety Act of1968, as amended (the “NGPSA”) which establishes federal safety standards for the design, construction, operation and maintenance of naturalgas pipeline facilities. In the Pipeline Safety Act of 1992, Congress expanded the U.S. Department of Transportation's regulatory authority toinclude regulated gathering lines that had previously been exempt from federal jurisdiction. The Pipeline Safety Improvement Act of 2002 and thePipeline Inspection, Protection, Enforcement and Safety Act of 2006 established mandatory inspections for certain U.S. oil and natural gastransmission pipelines in high consequence areas. The Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 reauthorizes fundingfor federal pipeline safety programs through 2015, increases penalties for safety violations, establishes additional safety requirements for newlyconstructed pipelines, and requires studies of certain safety issues that could result in the adoption of new regulatory requirements for existingpipelines.The U.S. Department of Transportation has delegated the implementation of safety requirements to the Pipeline and Hazardous Materials SafetyAdministration (the "PHMSA"), which has adopted and enforces safety standards and procedures applicable to a limited number of our pipelines.In addition, many states, including the states in which we operate, have adopted regulations that are identical to or more restrictive than existingU.S. Department of Transportation regulations for intrastate pipelines. Among the regulations applicable to us, the PHMSA requires pipelineoperators to develop integrity management programs for certain pipelines located in high consequence areas, which include high-population areassuch as the Dallas-Fort Worth greater metropolitan area where our DFW gathering system is located. While the majority of our pipelines meet theU.S. Department of Transportation definition of gathering lines and are thus exempt from the integrity management requirements of the PHMSA,we also operate a limited number of pipelines that are subject to the integrity management requirements. Those regulations require operators,including us, to:•perform ongoing assessments of pipeline integrity;•identify and characterize applicable threats to pipeline segments that could impact a high consequence area;•maintain processes for data collection, integration and analysis;•repair and remediate pipelines as necessary;•adopt and maintain procedures, standards and training programs for control room operations; and•implement preventive and mitigating actions.The PHMSA has published notices and advanced notices of proposed rulemaking to solicit comments on the need for changes to its safetyregulations, including whether to revise the integrity management requirements. The PHMSA has also solicited comments on changes to thedefinition of gathering pipelines, which could subject many currently exempted pipelines to the PHMSA regulations. The PHMSA also published anadvisory bulletin providing guidance on verification of records related to pipeline maximum allowable operating pressure. Pipelines that do not meetthe PHMSA's record verification standards may be required to perform additional testing or reduce their operating pressures.Gathering systems like ours are also subject to a number of federal and state laws and regulations, including the Federal Occupational Safety andHealth Act and comparable state statutes, the purposes of which are to protect the health and safety of workers, both generally and within thepipeline industry. In addition, the OSHA hazard communication standard, Environmental Protection Agency ("EPA") community right-to-knowregulations under Title III of the federal Superfund Amendment and Reauthorization Act and comparable state statutes require that information bemaintained concerning hazardous materials used or produced in our operations and that such information be provided to employees, state andlocal government authorities and the public.10Table of ContentsEnvironmental MattersGeneral. Our operation of pipelines and other assets for the gathering, compressing and dehydration of natural gas and other products is subjectto stringent and complex federal, state and local laws and regulations relating to the protection of the environment. As an owner or operator ofthese assets, we must comply with these laws and regulations at the federal, state and local levels. These laws and regulations can restrict orimpact our business activities in many ways, such as:•requiring the installation of pollution-control equipment or otherwise restricting the way we operate;•limiting or prohibiting construction activities in sensitive areas, such as wetlands, coastal regions or areas inhabited by endangered orthreatened species;•delaying system modification or upgrades during permit reviews;•requiring investigatory and remedial actions to mitigate pollution conditions caused by our operations or attributable to former operations;and•enjoining the operations of facilities deemed to be in non-compliance with permits or permit requirements issued pursuant to or imposed bysuch environmental laws and regulations.Failure to comply with these laws and regulations may trigger administrative, civil and criminal enforcement measures, including the assessmentof monetary penalties. Certain environmental statutes impose strict joint and several liability for costs required to clean up and restore sites wheresubstances, hydrocarbons or wastes have been disposed or otherwise released. Moreover, it is not uncommon for neighboring landowners andother third parties to file claims for personal injury and property damage allegedly caused by the release of hazardous substances, hydrocarbons orother waste products into the environment.The trend in environmental regulation is to place more stringent requirements, resulting in more restrictions and limitations, on activities that mayaffect the environment. Thus, there can be no assurance as to the amount or timing of future expenditures for environmental compliance orremediation and actual future expenditures may be different from the amounts we currently anticipate. We try to anticipate future regulatoryrequirements that might be imposed and plan accordingly to remain in compliance with changing environmental laws and regulations and tominimize the costs of such compliance. We also actively participate in industry groups that help formulate recommendations for addressingexisting and future regulations.The following is a discussion of the material environmental laws and regulations that relate to our business.Hazardous Substances and Waste. Our operations are subject to environmental laws and regulations relating to the management and release ofsolid and hazardous wastes and other substances, including hydrocarbons. These laws generally regulate the generation, storage, treatment,transportation and disposal of solid and hazardous waste and may impose strict joint and several liability for the investigation and remediation ofaffected areas where hazardous substances may have been released or disposed. Furthermore, the Toxic Substances Control Act, and analogousstate laws, impose requirements on the use, storage and disposal of various chemicals and chemical substances at our facilities. TheComprehensive Environmental Response, Compensation, and Liability Act ("CERCLA") and comparable state laws impose liability, without regardto fault or the legality of the original conduct, on certain classes of persons that contributed to the release of a hazardous substance into theenvironment. We may handle hazardous substances within the meaning of CERCLA, or similar state statutes, in the course of our ordinaryoperations and, as a result, may be jointly and severally liable under CERCLA for all or part of the costs required to clean up sites at which thesehazardous substances have been released into the environment.We also generate industrial wastes that are subject to the requirements of the Resource Conservation and Recovery Act and comparable statestatutes. While the Resource Conservation and Recovery Act regulates both solid and hazardous wastes, it imposes strict requirements on thegeneration, storage, treatment, transportation and disposal of hazardous wastes. Although we generate minimal hazardous waste, it is possiblethat non-hazardous wastes, which could include wastes currently generated during our operations, will in the future be designated as hazardouswastes and, therefore, be subject to more rigorous and costly disposal requirements. Moreover, from time to time, the EPA and state regulatoryagencies have considered the adoption of stricter disposal standards for non-hazardous wastes, including natural gas wastes.We currently own or lease properties where hydrocarbons are being or have been handled for many years. Although we believe that the previousoperators utilized operating and disposal practices that were standard in the industry at the time, hydrocarbons or other wastes may have beendisposed of or released on or under the11Table of Contentsproperties owned or leased by us or on or under the other locations where these hydrocarbons and wastes have been transported for treatment ordisposal. These properties and the wastes disposed thereon may be subject to CERCLA, the Resource Conservation and Recovery Act andanalogous state laws. Under these laws, we could be required to remove or remediate previously disposed wastes (including wastes disposed of orreleased by prior owners or operators), to clean up contaminated property (including contaminated groundwater) or to perform remedial operationsto prevent future contamination. We are not currently aware of any facts, events or conditions relating to such requirements that could materiallyimpact our operations or financial condition.Air Emissions. Our operations are subject to the federal Clean Air Act and comparable state and local laws and regulations. These laws andregulations regulate emissions of air pollutants from various industrial sources, including our compressor stations, and also impose variousmonitoring and reporting requirements. Such laws and regulations may require that we obtain pre-approval for the construction or modification ofcertain projects or facilities expected to produce or significantly increase air emissions, obtain and strictly comply with air permits containingvarious emissions and operational limitations and utilize specific emission control technologies to limit emissions. Our failure to comply with theserequirements could subject us to monetary penalties, injunctions, conditions or restrictions on operations and criminal enforcement actions.Furthermore, we may be required to incur certain capital expenditures in the future to obtain and maintain operating permits and approvals for airpollutant emitting sources.In April 2012, the EPA finalized rules that establish new air emission reporting, monitoring, and control requirements for oil and natural gasproduction and natural gas processing operations. Specifically, the EPA's rule package included New Source Performance Standards ("NSPS") toaddress emissions of sulfur dioxide and volatile organic compounds ("VOCs") from a number of sources that were previously not regulated in theoil and gas industry. Additionally, the EPA revised several existing regulations to address hazardous air pollutants frequently associated with oiland natural gas production and processing activities. The rules establish specific new requirements regarding emissions from compressors,pneumatic controllers, dehydrators, storage tanks and other production equipment. In addition, the rules establish new leak detection requirementsfor natural gas processing plants at 500 ppm. These rules required a number of modifications to our operations, including the installation of newequipment to control emissions from VOC emitting tanks at initial startup. To date, compliance with such rules has not resulted in significantcosts, but we will continue to evaluate their impact and associated costs.On December 17, 2014, the EPA proposed to lower the existing national ambient air quality standard (“NAAQS”) for ozone. A lowered ozoneNAAQS could result in a significant expansion of ozone nonattainment areas across the United States, including areas in which we operate, whichcould subject us to increased regulatory burdens in the form of more stringent emission controls, emission offset requirements, and increasedpermitting delays and costs.In addition, in February 2014, the Colorado Department of Public Health and Environment’s Air Quality Control Commission finalized regulationsimposing stringent new requirements relating to air emissions from oil and gas facilities in Colorado. These new Colorado rules include storagetank control, monitoring, recordkeeping and reporting requirements as well as leak detection and repair requirements for both well productionfacilities and compressor stations and associated equipment. The new requirements went into effect January 2015.Water Discharges. The Clean Water Act, and analogous state laws impose restrictions and strict controls regarding the discharge of pollutantsinto regulated waters, which impacts our ability to conduct construction activities in waters and wetlands. Certain state regulations and the generalpermits issued under the Federal National Pollutant Discharge Elimination System program prohibit the discharge of pollutants and chemicals. Inaddition, the Clean Water Act and analogous state laws require individual permits or coverage under general permits for discharges of storm waterrunoff from certain types of facilities. These permits require us to control storm water runoff from some of our facilities. Some states also maintaingroundwater protection programs that require permits for discharges or operations that may impact groundwater conditions. Federal and stateregulatory agencies can impose administrative, civil and criminal penalties for non-compliance with discharge permits or other requirements of theClean Water Act and analogous state laws and regulations.Oil Pollution Act. The Oil Polution Control Act (the "OPA") requires the preparation of a Spill Prevention Control and Countermeasure (“SPCC”)plan for facilities engaged in drilling, producing, gathering, storing, processing, refining, transferring, distributing, using, or consuming oil and oilproducts, and which due to their location, could reasonably be expected to discharge oil in harmful quantities into or upon the navigable waters ofthe United States. The owner or operator of an SPCC-regulated facility is required to prepare a written, site-specific spill prevention plan, whichdetails how a facility's operations comply with the requirements. To be in compliance, the facility's SPCC plan must satisfy all of the applicablerequirements for drainage, bulk storage tanks, tank car and truck loading and unloading, transfer operations (intrafacility piping), inspections andrecords, security, and training.12Table of ContentsHydraulic Fracturing. Hydraulic fracturing is an important and increasingly common practice that is used to stimulate production of natural gasand/or crude oil from dense subsurface rock formations, and is primarily presently regulated by state agencies. However, Congress has in the pastand may in the future consider legislation to regulate hydraulic fracturing by federal agencies. Many states have already adopted laws and/orregulations that require disclosure of the chemicals used in hydraulic fracturing, and are considering legal requirements that could impose morestringent permitting, disclosure and well construction requirements on oil and/or natural gas drilling activities. The EPA is also moving forward withvarious related regulatory actions, including approving, on April 17, 2012, new regulations requiring, among other matters, green completions ofhydraulically-fractured wells by 2015. We do not believe these new regulations will have a direct effect on our operations, but because oil and/ornatural gas production using hydraulic fracturing is growing rapidly in the United States, if new or more stringent federal, state or local legalrestrictions relating to such drilling activities or to the hydraulic fracturing process are adopted, this could result in a reduction in the supply ofnatural gas.Endangered Species Act. The Endangered Species Act restricts activities that may affect endangered or threatened species or their habitats.Some of our pipelines may be located in areas that are designated as habitats for endangered or threatened species.National Environmental Policy Act. The National Environmental Policy Act (the "NEPA"), establishes a national environmental policy and goalsfor the protection, maintenance and enhancement of the environment and provides a process for implementing these goals within federal agencies.A major federal agency action having the potential to significantly impact the environment requires review under NEPA and, as a result, manyactivities requiring FERC approval must undergo NEPA review. Many of our activities are covered under categorical exclusions which results in ashorter NEPA review process. The Council on Environmental Quality has announced an intention to reinvigorate NEPA reviews and in March 2012,issued final guidance that may result in longer review processes.Climate Change. In December 2009, the EPA published its findings that emissions of carbon dioxide, methane and other GHGs present anendangerment to public health and the environment because emissions of such gases are contributing to warming of the earth’s atmosphere andother climatic changes. Based on these findings, the EPA has adopted regulations under the Clean Air Act that, among other things, establishGHG emission limits from motor vehicles as well as establish Prevention of Significant Deterioration (“PSD”) construction and Title V operatingpermit reviews for certain large stationary sources that are potential major sources of GHG emissions. Facilities required to obtain PSD permits fortheir GHG emissions also will be required to meet “best available control technology” standards that will be established by the states or, in somecases, by the EPA on a case-by-case basis.In addition, in September 2009, the EPA issued a final rule requiring the reporting of greenhouse gas emissions from specified large greenhousegas emitting sources in the United States beginning in 2011 for emissions in 2010. In November 2010, the EPA published a final rule expanding itsexisting greenhouse gas emissions reporting to include onshore and offshore oil and natural gas systems beginning in 2012. We are required toreport under these rules for our assets that have greenhouse gas emissions above the reporting thresholds. The EPA continues to consideradditional climate change requirements for the energy industry. Such developments may affect how these greenhouse gas initiatives will impactour operations.Legislation or regulations that may be adopted to address climate change could also affect the markets for our products by making our productsmore or less desirable than competing sources of energy. To the extent that our products are competing with higher greenhouse gas emittingenergy sources, our products would become more desirable in the market with more stringent limitations on greenhouse gas emissions.Conversely, to the extent that our products are competing with lower greenhouse gas emitting energy sources such as solar and wind, ourproducts would become less desirable in the market with more stringent limitations on greenhouse gas emissions.Other InformationEmployees. SMLP does not have any employees. All of the employees required to conduct and support its operations are employed by SummitInvestments or its affiliates, but these individuals are sometimes referred to as our employees. The officers of our general partner manage ouroperations and activities. As of December 31, 2014, Summit Investments employed 254 people who provide direct, full-time support to ouroperations. None of our employees are covered by collective bargaining agreements, and we have never experienced any business interruption asa result of any labor disputes.Availability of Reports. We make certain filings with the Securities and Exchange Commission (the "SEC"), including, among other filings, ourannual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments and exhibits to those reports,available free of charge through our website,13Table of Contentswww.summitmidstream.com, as soon as reasonably practicable after the date they are filed with, or furnished to, the SEC. The filings are alsoavailable at the SEC’s Public Reference Room at 100 F Street, NE, Washington, D.C. 20549 or by calling 1-800-SEC-0330. These filings are alsoavailable through the SEC's website, www.sec.gov. Our press releases and recent investor presentations are also available on our website.Item 1A. Risk Factors.Risks Related to our BusinessWe may not have sufficient cash from operations following the establishment of cash reserves and payment of fees and expenses,including cost reimbursements to our general partner, to enable us to pay the minimum quarterly distribution ("MQD") or anydistribution to holders of our common and subordinated units.To pay the minimum quarterly distribution of $0.40 per unit per quarter, or $1.60 per unit on an annualized basis, we will require available cash ofapproximately $24.1 million per quarter, or $96.6 million per year (based on units outstanding, as of December 31, 2014, including nonvestedSMLP LTIP awards). We may not have sufficient available cash from operating surplus each quarter to pay the minimum quarterly distribution. Theamount of cash we can distribute on our units principally depends upon the amount of cash we generate from our operations, which will fluctuatefrom quarter to quarter based on, among other things:•the volume of natural gas we gather, treat and process;•the level of production of natural gas from wells connected to our gathering systems, which is dependent in part on the demand for, andthe market prices of, crude oil, natural gas and NGLs;•damage to pipelines, facilities, related equipment and surrounding properties caused by earthquakes, floods, fires, severe weather,explosions and other natural disasters, accidents and acts of terrorism;•leaks or accidental releases of hazardous materials into the environment, whether as a result of human error or otherwise;•weather conditions and seasonal trends;•changes in the fees we charge for our services;•the level of competition from other midstream energy companies in our geographic markets;•changes in the level of our operating, maintenance and general and administrative expenses;•regulatory action affecting the supply of, or demand for, crude oil, natural gas and NGLs, the fees we can charge, how we contract forservices, our existing contracts, our operating costs or our operating flexibility; and•prevailing economic and market conditions.In addition, the actual amount of cash we will have available for distribution will depend on other factors, some of which are beyond our control,including:•the level and timing of capital expenditures we make;•the level of our operating, maintenance and general and administrative expenses, including reimbursements to our general partner forservices provided to us;•the cost of acquisitions, if any;•our debt service requirements and other liabilities;•fluctuations in our working capital needs;•our ability to borrow funds and access capital markets;•restrictions contained in our debt agreements;•the amount of cash reserves established by our general partner; and•other business risks affecting our cash levels.14Table of ContentsWe depend on our anchor customers for a significant portion of our revenues. The loss of, or material nonpayment or nonperformanceby, or the curtailment of production by, any one or more of these customers could materially adversely affect our revenues, cash flowand ability to make cash distributions to our unitholders.If our customers curtail or reduce production in our areas of operation it could reduce throughput on our system and, therefore, materially adverselyaffect our revenues, cash flow and ability to make cash distributions to our unitholders.Some of our customers may have material financial and liquidity issues or may, as a result of operational incidents or other events, bedisproportionately affected as compared to larger, better-capitalized companies. Any material nonpayment or nonperformance by any of our keyanchor customers could have a material adverse effect on our revenue and cash flows and our ability to make cash distributions to our unitholders.We expect our exposure to concentrated risk of non-payment or non-performance to continue as long as we remain substantially dependent on arelatively small number of customers for a substantial portion of our revenue.Adverse developments in our existing areas of operation could materially adversely impact our financial condition, results of operationsand cash flows and reduce our ability to make cash distributions to our unitholders.Our operations are focused on natural gas gathering, treating and processing services in four unconventional resource basins: (i) the AppalachianBasin, which includes the Marcellus Shale formation in northern West Virginia; (ii) the Williston Basin, which includes the Bakken and Three Forksshale formations in northwestern North Dakota; (iii) the Fort Worth Basin, which includes the Barnett Shale formation in north-central Texas; and(iv) the Piceance Basin, which includes the Mesaverde formation and the Mancos and Niobrara shale formations in western Colorado and easternUtah. Due to our lack of industry and geographic diversity, adverse developments in the natural gas and crude oil industries or in our existing areasof operation could have a significantly greater impact on our financial condition, results of operations and cash flows.In addition, our operations in the Barnett Shale region could expose us to disproportionate operational and regulatory risk in that area. The locationof the Barnett Shale in the Dallas-Fort Worth, Texas metropolitan area poses unique challenges associated with drilling for and gathering naturalgas in urban and suburban communities. The DFW Midstream system is located within the city limits of various municipalities in that region,including Arlington, Texas. State and local regulations regarding the operation of drilling rigs limit the number of potential new drilling sites that canbe used for infill drilling programs, which has led producers to pursue a high-density pad site drilling strategy. Furthermore, the process of obtainingpermits for constructing additional gathering lines to deliver our customers' natural gas to market may be more time consuming and costly than inmore rural areas. In addition, we may experience a higher rate of litigation or increased insurance and other costs related to our operations orfacilities in such highly populated areas.Significant prolonged weaknesses in natural gas, NGL and crude oil prices could affect supply and demand, thereby reducingthroughput on our systems and materially adversely affecting our revenues and cash available to make cash distributions to ourunitholders over the long term.The current level of low natural gas, NGL and crude oil prices has had a negative impact on exploration, development and production activity in ourareas of operation. Unchanged or lower natural gas, NGL and crude oil prices over the long term could result in a decline in the production ofnatural gas and crude oil, thereby resulting in reduced throughput on our gathering systems. The price of natural gas has been at historically lowlevels for an extended period of time. The lower price of natural gas is due in part to increased production, especially from unconventional sources,such as natural gas shale plays, and a warmer winter. Furthermore, the amount of natural gas in storage in the continental United States hasgenerally increased due to the decisions of many producers to store natural gas in the expectation of higher prices in the future as well asdecreased demand as a result of unseasonably warm winters. In response to lower natural gas prices, the number of natural gas drilling rigs hasdeclined as a number of producers have curtailed their exploration and production activities. Until the supply overhang has been reduced and theeconomy sees more robust growth, we believe that natural gas pricing is likely to be constrained. The price of crude oil has recently experienced asignificant decline in response to a recent global supply surplus, with OPEC stating in November 2014 that it would not decrease production levels,despite estimates of slowing global demand.Additionally, due to the extended period of historically low natural gas prices and recent decline in NGL and crude oil prices, certain of ourcustomers in each of our areas of operations have, and others could, reduce drilling activity and capital expenditure budgets.15Table of ContentsIf natural gas, NGL and/or crude oil prices remain depressed or decrease further, it could cause sustained reductions in exploration or productionactivity in our areas of operation and result in a further reduction in throughput on our systems, which could have a material adverse effect on ourbusiness, financial condition, results of operations and ability to make cash distributions to our unitholders.Because of the natural decline in production from existing wells in our areas of operation, our success depends in part on ourcustomers replacing declining production and also on our ability to maintain levels of throughput on our systems. Any decrease in thevolumes of natural gas that we gather and process could materially adversely affect our business and operating results.The natural gas volumes that support our business depend on the level of production from natural gas wells connected to our systems, theproduction from which may be less than expected and will naturally decline over time. As a result, our cash flows associated with these wells willalso decline over time. To maintain or increase throughput levels on our systems, we must obtain new sources of natural gas. The primary factorsaffecting our ability to obtain new sources of natural gas include (i) the level of successful drilling activity in our areas of operation and (ii) ourability to compete for new volumes on our systems.We have no control over the level of drilling activity in our areas of operation, the amount of reserves associated with wells connected to oursystems or the rate at which production from a well declines. In addition, we have no control over producers or their drilling and productiondecisions, which are affected by, among other things:•the availability and cost of capital;•prevailing and projected commodity prices, including the prices of crude oil, natural gas and other hydrocarbon products;•demand for crude oil, natural gas and other hydrocarbon products;•levels of reserves;•geological considerations;•environmental or other governmental regulations, including the availability of drilling permits and the regulation of hydraulic fracturing; and•the availability of drilling rigs and other costs of production and equipment.Fluctuations in energy prices can also greatly affect the development of new crude oil and natural gas reserves. Drilling and production activitygenerally decreases as commodity prices decrease. In general terms, the prices of crude oil, natural gas, and other hydrocarbon products fluctuatein response to changes in supply and demand, market uncertainty and a variety of additional factors that are beyond our control. These factorsinclude:•worldwide economic conditions;•weather conditions and seasonal trends;•the levels of domestic production and consumer demand;•the availability of imported liquefied natural gas ("LNG");•the ability to export LNG;•the availability of transportation systems with adequate capacity;•the volatility and uncertainty of regional pricing differentials and premiums;•the price and availability of alternative fuels;•the effect of energy conservation measures;•the nature and extent of governmental regulation and taxation; and•the anticipated future prices of crude oil, natural gas and other hydrocarbon products.Because of these factors, even if new crude oil or natural gas reserves are known to exist in areas served by our assets, producers may choosenot to develop those reserves. If reductions in drilling activity result in our inability to maintain the current levels of throughput on our systems,those reductions could reduce our revenue and cash flow and materially adversely affect our ability to make cash distributions to our unitholders.16Table of ContentsIn addition, it may be more difficult to maintain or increase the current volumes on our gathering systems, as several of the formations in theunconventional resource plays in which we operate generally have higher initial production rates and steeper production decline curves than wellsin more conventional basins. Should we determine that the economics of our gathering, treating and processing assets do not justify the capitalexpenditures needed to grow or maintain volumes associated therewith, revenues associated with these assets will decline over time. In additionto capital expenditures to support growth, the steeper production decline curves associated with unconventional resource plays may require us toincur higher maintenance capital expenditures over time, which will reduce our cash available for distribution.Many of our operating costs are fixed and do not vary with our throughput. These costs may not decline ratably or at all should we experience areduction in throughput, which would result in a decline in our revenue and cash flow and materially adversely affect our ability to make cashdistributions to our unitholders.If our customers do not increase the volumes of natural gas they provide to our gathering systems, our growth strategy and ability toincrease cash distributions to our unitholders may be materially adversely affected.If we are unsuccessful in attracting new customers, our ability to increase the throughput on our gathering systems will be dependent on receivingincreased volumes from our existing customers. Other than the scheduled increases in the minimum volume commitments provided for in our gasgathering and processing agreements, our customers are not obligated to provide additional volumes to our gathering systems, and they maydetermine in the future that drilling activities in areas outside of our current areas of operation are strategically more attractive to them. Reductionsby our customers in our areas of mutual interest could result in reductions in throughput on our systems and materially adversely impact our abilityto grow our operations and increase cash distributions to our unitholders.Our gas gathering and processing agreements contain provisions that can reduce the cash flow stability that the agreements weredesigned to achieve.Our gas gathering and processing agreements were designed to generate stable cash flows for us over the life of the minimum volumecommitment contract term while also minimizing direct commodity price risk. Under these minimum volume commitments, our customers agree toship a minimum volume of natural gas on our gathering systems or to our processing plants or, in some cases, to pay a minimum monetaryamount, over certain periods during the term of the minimum volume commitment. In addition, the majority of our gas gathering and processingagreements also include an aggregate minimum volume commitment, which is a total amount of natural gas that the customer must flow on ourgathering system or send to our processing plants (or an equivalent monetary amount) over the minimum volume commitment term. If acustomer's actual throughput volumes are less than its minimum volume commitment for the applicable period, it must make a shortfall paymentto us at the end of that contract month, quarter or year, as applicable. The amount of the shortfall payment is based on the difference between theactual throughput volume shipped or processed for the applicable period and the minimum volume commitment for the applicable period, multipliedby the applicable fee. To the extent that a customer's actual throughput volumes are above or below its minimum volume commitment for theapplicable period, many of our gas gathering agreements contain provisions that allow the customer to use the excess volumes or the shortfallpayment to credit against future excess volumes or future shortfall payments.Under certain circumstances, it is possible that the combined effect of the minimum volume commitment provisions could result in our receivingno revenues or cash flows from one or more customers in a given period. In the most extreme circumstances:•we could incur operating expenses with no corresponding revenues from one or more significant customers for a period of up to 35months; or•all or a substantial portion of our customers could cease shipping throughput volumes at a time when their respective aggregate minimumvolume commitments have been satisfied with previous throughput volume shipments.If either of these circumstances were to occur, it would have a material adverse effect on our results of operations, financial condition and cashflows and our ability to make cash distributions to our unitholders.We do not intend to obtain independent evaluations of natural gas reserves connected to our gathering systems on a regular or ongoingbasis; therefore, in the future, volumes of natural gas on our systems could be less than we anticipate.We have not obtained and do not intend to obtain independent evaluations of the natural gas reserves connected to our systems on a regular orongoing basis. Moreover, even if we did obtain independent evaluations of the natural17Table of Contentsgas reserves connected to our systems, such evaluations may prove to be incorrect. Crude oil and natural gas reserve engineering requiressubjective estimates of underground accumulations of crude oil and natural gas and assumptions concerning future crude oil and natural gasprices, future production levels and operating and development costs.Accordingly, we may not have accurate estimates of total reserves dedicated to some or all of our systems or the anticipated life of suchreserves. If the total reserves or estimated life of the reserves connected to our gathering systems are less than we anticipate and we are unableto secure additional sources of natural gas, it could have a material adverse effect on our business, results of operations, financial condition andour ability to make cash distributions to our unitholders.Our industry is highly competitive, and increased competitive pressure could materially adversely affect our business and operatingresults.We compete with other midstream companies in our areas of operation. Some of our competitors are large companies that have greater financial,managerial and other resources than we do. In addition, some of our competitors have assets in closer proximity to natural gas supplies and haveavailable idle capacity in existing assets that would not require new capital investments for use. Our competitors may expand or constructgathering systems that would create additional competition for the services we provide to our customers. Because our customers do not haveleases that cover the entirety of our areas of mutual interest, non-customer producers that lease acreage within any of our areas of mutual interestand produce natural gas may choose to use one of our competitors to gather and process that natural gas.In addition, our customers may develop their own gathering systems outside of our areas of mutual interest. Our ability to renew or replace existingcontracts with our customers at rates sufficient to maintain current revenue and cash flow could be materially adversely affected by the activitiesof our competitors and our customers. All of these competitive pressures could have a material adverse effect on our business, results ofoperations, financial condition and ability to make cash distributions to our unitholders.We may not be able to renew or replace expiring contracts at favorable rates or on a long-term basis.We gather, treat and process the natural gas on our systems under contracts with terms of various durations. As these contracts expire, we mayhave to negotiate extensions or renewals with existing suppliers and customers or enter into new contracts with other suppliers and customers. Wemay be unable to obtain new contracts on favorable commercial terms, if at all. We also may be unable to maintain the economic structure of aparticular contract with an existing customer or the overall mix of our contract portfolio. Moreover, we may be unable to obtain areas of mutualinterest from new customers in the future, and we may be unable to renew existing areas of mutual interest with current customers as and whenthey expire. The extension or replacement of existing contracts depends on a number of factors beyond our control, including:•the level of existing and new competition to provide gathering and/or processing services to our markets;•the macroeconomic factors affecting natural gas gathering and processing economics for our current and potential customers;•the balance of supply and demand, on a short-term, seasonal and long-term basis, in our markets;•the extent to which the customers in our markets are willing to contract on a long-term basis; and•the effects of federal, state or local regulations on the contracting practices of our customers.To the extent we are unable to renew our existing contracts on terms that are favorable to us or successfully manage our overall contract mix overtime, our revenues and cash flows could decline and our ability to make cash distributions to our unitholders could be materially adverselyaffected.We are exposed to the creditworthiness and performance of our customers, suppliers and contract counterparties, and any materialnonpayment or nonperformance by one or more of these parties could materially adversely affect our financial and operating results.Although we attempt to assess the creditworthiness of our customers, suppliers and contract counterparties, there can be no assurance that ourassessments will be accurate or that there will not be a rapid or unanticipated deterioration in their creditworthiness, which may have an adverseimpact on our business, results of operations, financial condition and ability to make cash distributions to our unitholders. In addition, there can beno assurance that our contract counterparties will perform or adhere to existing or future contractual arrangements.18Table of ContentsThe policies and procedures we use to manage our exposure to credit risk, such as credit analysis, credit monitoring and, if necessary, requiringcredit support, cannot fully eliminate counterparty credit risks. To the extent our policies and procedures prove to be inadequate, our financial andoperational results may be negatively impacted.Some of our counterparties may be highly leveraged or have limited financial resources and will be subject to their own operating and regulatoryrisks. Even if our credit review and analysis mechanisms work properly, we may experience financial losses in our dealings with such parties. Inaddition, volatility in commodity prices might have an impact on many of our counterparties, which, in turn, could have a negative impact on theirability to meet their obligations to us and may also increase the magnitude of these obligations.Any material nonpayment or nonperformance by any of our counterparties could require us to pursue substitute counterparties for the affectedoperations, reduce our operations or seek out alternative service providers. There can be no assurance that any such efforts would be successfulor would provide similar financial and operational results.If third-party pipelines or other midstream facilities interconnected to our gathering systems become partially or fully unavailable, ourrevenue and cash flow and our ability to make cash distributions to our unitholders could be materially adversely affected.Our natural gas gathering systems connect to third-party pipelines and other midstream facilities, such as processing plants, owned and operatedby unaffiliated third parties. The continuing operation of such third-party pipelines and other midstream facilities is not within our control. Thesepipelines and other midstream facilities may become unavailable because of testing, turnarounds, line repair, reduced operating pressure, lack ofoperating capacity, regulatory requirements, curtailments of receipt or deliveries due to insufficient capacity or because of damage from otheroperational hazards. In addition, we do not have interconnect agreements with all of these pipelines and other facilities and the agreements we dohave may be terminated in certain circumstances and on short notice. If any of these pipelines or other midstream facilities become unavailablefor any reason, or, if these third parties are otherwise unwilling to receive or transport the natural gas that we gather and process, our revenue,cash flow and ability to make cash distributions to our unitholders could be materially adversely affected.We have a limited ownership history with respect to all of our assets. There could be unknown events or conditions or increasedmaintenance or repair expenses and downtime associated with our pipelines that could have a material adverse effect on our businessand operating results.Our executive management team has a relatively limited history of operating our assets. There may be historical occurrences or latent issuesregarding our pipeline systems of which our executive management team may be unaware and that may have a material adverse effect on ourbusiness and results of operations. The steeper production decline curves associated with unconventional resource plays may require us to incurhigher maintenance capital expenditures over time to connect additional wells and maintain throughput volume. Any significant increase inmaintenance and repair expenditures or loss of revenue due to the condition of our pipeline systems could materially adversely affect our businessand results of operations and our ability to make cash distributions to our unitholders.A shortage of skilled labor in the midstream natural gas industry could reduce employee productivity and increase costs, which couldhave a material adverse effect on our business and results of operations.The gathering, treating and processing of natural gas requires skilled laborers in multiple disciplines such as equipment operators, mechanics andengineers, among others. We have from time to time encountered shortages for these types of skilled labor. If we experience shortages of skilledlabor in the future, our labor and overall productivity or costs could be materially adversely affected. If our labor prices increase or if we experiencematerially increased health and benefit costs with respect to our general partner's employees, our business and results of operations and our abilityto make cash distributions to our unitholders could be materially adversely affected.Crude oil and natural gas activities in certain areas of our gathering systems may be adversely affected by seasonal weather conditionswhich in turn could negatively impact the operations of our gathering, treating and processing facilities and our construction ofadditional facilities.Extended periods of below freezing weather and unseasonably wet weather conditions across our systems, especially in North Dakota and WestVirginia, can be severe and can adversely affect oil and gas operations due to the potential shut-in of producing wells or decreased drillingactivities. The result of these types of interruptions could result in a decrease in the volumes of natural gas supplied to our gathering systems.Further, delays and19Table of Contentsshutdowns caused by severe weather during the winter months may have a material negative impact on the continuous operations of our gatheringsystems, including interruptions in service. These types of interruptions could negatively impact our ability to meet contractual obligations to ourcustomers and thereby give rise to certain termination rights and releases of dedicated acreage. Any resulting terminations or releases couldmaterially affect our business and results of operations.Interruptions in operations at any of our facilities may adversely affect our operations and cash flows available for distribution to ourunitholders.Our operations depend upon the infrastructure that we have developed and constructed. Any significant interruption at any of our gathering, treatingor processing facilities, or in our ability to gather, treat or process natural gas or NGLs, would adversely affect our operations and cash flowsavailable for distribution to our unitholders.Operations at our facilities could be partially or completely shut down, temporarily or permanently, as the result of circumstances not within ourcontrol, such as:•unscheduled turnarounds or catastrophic events at our physical plants or pipeline facilities;•restrictions imposed by governmental authorities or court proceedings;•labor difficulties that result in a work stoppage or slowdown;•a disruption in the supply of resources necessary to operate our midstream facilities;•damage to our facilities resulting from natural gas or NGLs that do not comply with applicable specifications; and•inadequate transportation or market access to support production volumes, including lack of availability of pipeline capacity.Our business involves many hazards and operational risks, some of which may not be fully covered by insurance. If a significantaccident or event occurs for which we are not adequately insured or if we fail to recover all anticipated insurance proceeds for significantaccidents or events for which we are insured, our operations and financial results could be materially adversely affected.Our operations are subject to all of the risks and hazards inherent in the gathering, treating and processing of natural gas, including:•damage to pipelines and plants, related equipment and surrounding properties caused by tornadoes, floods, fires and other naturaldisasters and acts of terrorism;•inadvertent damage from construction, vehicles, farm and utility equipment;•leaks of natural gas and other hydrocarbons or losses of natural gas as a result of the malfunction of equipment or facilities;•ruptures, fires and explosions; and•other hazards that could also result in personal injury and loss of life, pollution and suspension of operations.These risks could result in substantial losses due to personal injury and/or loss of life, severe damage to and destruction of property andequipment and pollution or other environmental damage. The location of certain of our systems in or near populated areas, including residentialareas, commercial business centers and industrial sites, could increase the damages resulting from these risks.These risks may also result in curtailment or suspension of our operations. A natural disaster or any event such as those described aboveaffecting the areas in which we and our customers operate could have a material adverse effect on our operations. Accidents or other operatingrisks could further result in loss of service available to our customers. Such circumstances, including those arising from maintenance and repairactivities, could result in service interruptions on segments of our systems. Potential customer impacts arising from service interruptions onsegments of our systems could include limitations on our ability to satisfy customer requirements, obligations to temporarily waive minimumvolume commitments during times of constrained capacity, and solicitation of existing customers by others for potential new projects that wouldcompete directly with our existing services. Such circumstances could materially adversely impact our ability to meet contractual obligations andretain customers, with a resulting negative impact on our business and results of operations and our ability to make cash distributions to ourunitholders.20Table of ContentsAlthough we have a range of insurance programs providing varying levels of protection for public liability, damage to property, loss of income andcertain environmental hazards, we may not be insured against all causes of loss, claims or damage that may occur. If a significant accident orevent occurs for which we are not fully insured, it could materially adversely affect our operations and financial condition. Furthermore, we may notbe able to maintain or obtain insurance of the type and amount we desire at reasonable rates. As a result of market conditions, premiums anddeductibles for certain of our insurance policies may substantially increase. In some instances, certain insurance could become unavailable oravailable only for reduced amounts of coverage. Additionally, with regard to the assets we have acquired, we have limited indemnification rights torecover in the event of any potential environmental liabilities.We intend to grow our business in part by seeking strategic acquisition opportunities. If we are unable to make acquisitions oneconomically acceptable terms from Summit Investments, its affiliates or third parties, our future growth will be affected, and theacquisitions we do make may reduce, rather than increase, our cash generated from operations.Our ability to grow depends, in part, on our ability to make acquisitions that increase our cash generated from operations. The acquisitioncomponent of our strategy is based, in large part, on our expectation of ongoing divestitures of midstream energy assets by industry participants.A material decrease in such divestitures would limit our opportunities for future acquisitions and could materially adversely affect our ability to growour operations and increase our cash distributions to our unitholders.If we are unable to make accretive acquisitions from Summit Investments, its affiliates or third parties, whether because we are (i) unable toidentify attractive acquisition candidates or negotiate acceptable purchase contracts; (ii) unable to obtain financing for these acquisitions oneconomically acceptable terms; (iii) outbid by competitors; or (iv) unable to obtain necessary governmental or third-party consents or for any otherreason, then our future growth and ability to increase cash distributions on a per-unit basis will be limited. Furthermore, even if we do makeacquisitions that we believe will be accretive, these acquisitions may nevertheless result in a decrease in the cash generated from operations.Any acquisition involves potential risks, including, among other things:•mistaken assumptions about volumes, revenue and costs, including synergies and potential growth;•an inability to secure adequate customer commitments to use the acquired systems or facilities;•the risk that natural gas or crude oil reserves expected to support the acquired assets may not be of the anticipated magnitude or may notbe developed as anticipated;•an inability to integrate successfully the assets or businesses we acquire;•coordinating geographically disparate organizations, systems and facilities;•the assumption of unknown liabilities for which we are not indemnified or for which our indemnity is inadequate;•mistaken assumptions about the overall costs of equity or debt;•the diversion of management's and employees' attention from other business concerns;•unforeseen difficulties operating in new geographic areas and business lines;•customer or key employee losses at the acquired businesses;•production declines higher than anticipated; and•facilities being properly constructed.If we consummate any future acquisitions, our capitalization and results of operations may change significantly, and our unitholders will not havethe opportunity to evaluate the economic, financial and other relevant information that we will consider in deciding to engage in these futureacquisitions.21Table of ContentsWe may fail to successfully integrate gathering system acquisitions into our existing business in a timely manner, which could have amaterial adverse effect on our business, results of operations, financial condition and ability to make cash distributions to ourunitholders, or fail to realize all of the expected benefits of the acquisitions, which could negatively impact our future results ofoperations.Integration of future gathering system acquisitions could be a complex, time-consuming and costly process, particularly if the acquired assetssignificantly increase our size and/or diversify the geographic areas in which we operate or the service offerings that we provide.The failure to successfully integrate the acquired assets with our existing business in a timely manner may have a material adverse effect on ourbusiness, results of operations, financial condition and ability to make cash distributions to our unitholders. If any of the risks described above orunanticipated liabilities or costs were to materialize with respect to future acquisitions or if the acquired assets were to perform at levels below theforecasts we used to evaluate them, then the anticipated benefits from the acquisition may not be fully realized, if at all, and our future results ofoperations could be negatively impacted.Our construction of new assets may not result in revenue increases and will be subject to regulatory, environmental, political, legal andeconomic risks, which could materially adversely affect our results of operations and financial condition.One of the ways we intend to grow our business is through organic growth projects. The construction of additions or modifications to our existingsystems and the construction of new midstream assets involve numerous regulatory, environmental, political, legal and economic uncertaintiesthat are beyond our control.Such expansion projects may also require the expenditure of significant amounts of capital, and financing may not be available on economicallyacceptable terms or at all. If we undertake these projects, they may not be completed on schedule, at the budgeted cost, or at all. Moreover, ourrevenue may not increase immediately upon the expenditure of funds on a particular project.Moreover, we could construct facilities to capture anticipated future growth in production in a region in which such growth does not materialize oronly materializes over a period materially longer than expected. To the extent we rely on estimates of future production in our decision to constructadditions to our systems, such estimates may prove to be inaccurate due to the numerous uncertainties inherent in estimating quantities of futureproduction. As a result, new facilities may not attract enough throughput to achieve our expected investment return, which could materiallyadversely affect our results of operations and financial condition.In addition, the construction of additions or modifications to our existing gathering, treating and processing assets and the construction of newmidstream assets may require us to obtain new rights-of-way or federal and state environmental or other authorizations. The approval process forgathering, treating and processing activities has become increasingly challenging, due in part to state and local concerns related to unregulatedexploration and production and gathering, treating and processing activities in new production areas. Such authorization may not be granted or, ifgranted, such authorization may include burdensome or expensive conditions. As a result, we may be unable to obtain such rights-of-way or otherauthorizations and may, therefore, be unable to connect new natural gas volumes to our systems or capitalize on other attractive expansionopportunities. Additionally, it may become more expensive for us to obtain new rights-of-way or authorizations or to renew existing rights-of-way orauthorizations. If the cost of renewing or obtaining new rights-of-way or authorizations increases materially, our cash flows could be materiallyadversely affected.We require access to significant amounts of additional capital to implement our growth strategy, as well as to meet potential futurecapital requirements under certain of our gas gathering and processing agreements. Tightened capital markets could impair our abilityto grow or cause us to be unable to meet future capital requirements.To expand our asset base, whether through acquisitions or organic growth, we will need to make expansion capital expenditures. We alsofrequently consider and enter into discussions with third parties regarding potential acquisitions. In addition, the terms of certain of our gasgathering and processing agreements also require us to spend significant amounts of capital, including over a short period of time, to constructand develop additional midstream assets to support our customers' development projects. Depending on our customers' future development plans,it is possible that the capital we would be required to spend to construct and develop such assets could exceed our ability to finance thoseexpenditures using our cash reserves or available capacity under our amended and restated revolving credit facility.22Table of ContentsWe plan to use cash from operations, incur borrowings, and/or sell additional common units or other securities to fund our future expansion capitalexpenditures. Using cash from operations to fund expansion capital expenditures will directly reduce our cash available for distribution tounitholders. Our ability to obtain financing or to access the capital markets for future debt or equity offerings may be limited by our financialcondition at the time of any such financing or offering as well as covenants in our debt agreements, general economic conditions andcontingencies and uncertainties that are beyond our control. If we are unable to raise expansion capital, we may lose the opportunity to makeacquisitions or to gather, treat and process new natural gas production from our customers with whom we have agreed to construct and developmidstream assets in the future. Even if we are successful in obtaining funds for expansion capital expenditures through equity or debt financings,the terms thereof could limit our ability to pay distributions to our common unitholders. In addition, incurring additional debt may significantlyincrease our interest expense and financial leverage, and issuing additional units representing limited partner interests may result in significantcommon unitholder dilution and increase the aggregate amount of cash required to maintain the then-current distribution rate, which couldmaterially decrease our ability to pay distributions at the then-current distribution rate.We do not have any commitment from our Sponsor or its affiliates to provide any direct or indirect financial assistance to us.Because our common units are yield-oriented securities, increases in interest rates could materially adversely impact our unit price, ourability to issue equity or incur debt for acquisitions or other purposes and our ability to make cash distributions to our unitholders.Interest rates are generally at or near historic lows and may increase in the future. As a result, interest rates on our future credit facilities and debtofferings could be higher than current levels, causing our financing costs to increase. As with other yield-oriented securities, our unit price isimpacted by the level of our cash distributions and implied distribution yield. The distribution yield is often used by investors to compare and rankyield-oriented securities for investment decision-making purposes. Therefore, changes in interest rates, either positive or negative, may affect theyield requirements of investors who invest in our units, and a rising interest rate environment could have a material adverse impact on our unitprice, our ability to issue equity or incur debt for acquisitions or other purposes and our ability to make cash distributions at our intended levels.Debt we incur in the future may limit our flexibility to obtain financing and to pursue other business opportunities.At December 31, 2014, we had $808.0 million of total indebtedness and the unused portion of our $700.0 million amended and restated revolvingcredit facility totaled $492.0 million. Our future level of debt could have significant consequences, including the following:•our ability to obtain additional financing, if necessary, for working capital, capital expenditures, acquisitions or other purposes may belimited or such financing may not be available on favorable terms;•our funds available for operations, future business opportunities and cash distributions to unitholders will be reduced by that portion of ourcash flow required to make interest payments on our debt;•we may be more vulnerable to competitive pressures or a downturn in our business or the economy generally; and•our flexibility in responding to changing business and economic conditions may be limited.Our ability to service our debt will depend upon, among other things, our future financial and operating performance, which will be affected byprevailing economic conditions and financial, business, regulatory and other factors, some of which are beyond our control. If our operating resultsare not sufficient to service any future indebtedness, we will be forced to take actions such as reducing distributions, reducing or delaying ourbusiness activities, acquisitions, investments or capital expenditures, selling assets or seeking additional equity capital. We may not be able toeffect any of these actions on satisfactory terms or at all.Restrictions in our amended and restated revolving credit facility and senior notes indentures could materially adversely affect ourbusiness, financial condition, results of operations, ability to make cash distributions to unitholders and value of our common units.We are dependent upon the earnings and cash flow generated by our operations to meet our debt service obligations and to make cashdistributions to our unitholders. The operating and financial restrictions and covenants in our amended and restated revolving credit facility, ourindentures and any future financing agreements could restrict our ability to finance future operations or capital needs or to expand or pursue ourbusiness activities, which23Table of Contentsmay, in turn, limit our ability to make cash distributions to our unitholders. For example, our amended and restated revolving credit facility andindentures restrict our ability to, among other things:•incur or guarantee certain additional debt;•make certain cash distributions on or redeem or repurchase certain units;•make certain investments and acquisitions;•make certain capital expenditures;•incur certain liens or permit them to exist;•enter into certain types of transactions with affiliates;•merge or consolidate with another company or otherwise engage in a change of control transaction; and•transfer, sell or otherwise dispose of certain assets.Our amended and restated revolving credit facility and indentures also contain covenants requiring us to maintain certain financial ratios and meetcertain tests. Our ability to meet those financial ratios and tests can be affected by events beyond our control, and we cannot guarantee that wewill meet those ratios and tests.The provisions of our amended and restated revolving credit facility and indentures may affect our ability to obtain future financing and pursueattractive business opportunities as well as affect our flexibility in planning for, and reacting to, changes in business conditions. In addition, afailure to comply with the provisions of our amended and restated revolving credit facility or indentures could result in a default or an event ofdefault that could enable our lenders or noteholders to declare the outstanding principal of that debt, together with accrued and unpaid interest, tobe immediately due and payable. If we were unable to repay the accelerated amounts, the lenders under our amended and restated revolving creditfacility could proceed against the collateral granted to them to secure such debt. If the payment of our debt is accelerated, our assets may beinsufficient to repay such debt in full, and our unitholders could experience a partial or total loss of their investment. The amended and restatedrevolving credit facility also has cross default provisions that apply to any other indebtedness we may have and the indentures have cross defaultprovisions that apply to certain other indebtedness.A portion of our revenues are directly exposed to changes in crude oil and natural gas prices, and our exposure may increase in thefuture.We generate a substantial majority of our revenues pursuant to long-term, primarily fee-based gas gathering and processing agreements underwhich we are paid based on the volumes of natural gas that we gather and/or process rather than the value of the underlying natural gas.Consequently, our existing operations and cash flows have limited direct exposure to commodity price risk. Although we will seek to enter intosimilar fee-based contracts with new customers in the future, our efforts to obtain such contractual terms may not be successful or the localmarket for our services may not support fee-based gas gathering and processing agreements. For example, in connection with our acquisition ofRed Rock Gathering and Bison Midstream, we have percent-of-proceeds and keep-whole contracts with certain customers and we may, in thefuture, enter into additional percent-of-proceeds and keep-whole contracts with our customers, which would increase our exposure to commodityprice risk, as the revenues generated from those contracts directly correlate with the fluctuating price of natural gas and natural gas liquids. Underthese keep-whole arrangements, our principal cost is delivering dry gas of an equivalent BTU content to replace BTUs extracted from the gasstream in the form of NGLs or consumed as fuel during processing. Generally, the spreads between the NGL product sales price and the purchaseprice of natural gas with an equivalent BTU content are positive under these arrangements. However, in the event natural gas becomes moreexpensive on a BTU equivalent basis than NGL products, the cost of keeping the producer “whole” could result in lower, and in some cases,negative, net operating margins.Substantially all of our remaining revenue is derived from (i) the sale of physical natural gas that we retain from our DFW Midstream customers tooffset our power expense associated with our electric-drive compression and (ii) the sale of condensate volumes that we retain on the Grand Riversystem. The revenues we earn from the sale of retained natural gas are tied to the price of natural gas. In addition, changes in the price of crudeoil could directly affect the revenues we receive from the sale of condensate.Furthermore, we may acquire or develop additional midstream assets in the future, including assets related to commodities other than natural gas,that have a greater exposure to fluctuations in commodity price risk than our current operations. Future exposure to the volatility of crude oil andnatural gas prices could have a material adverse effect on our business, results of operations and financial condition.24Table of ContentsA change in laws and regulations applicable to our assets or services, or the interpretation or implementation of existing laws andregulations may cause our revenue to decline or our operation and maintenance expenses to increase.Various aspects of our operations are subject to extensive regulation. Numerous federal, state and local departments and agencies are authorizedby statute to issue, and have issued, rules, regulations and interpretations binding upon participants in the natural gas industry. The regulation ofour activities and the natural gas industry frequently changes as the activities of the industry often are reviewed by legislators and regulators. In2014, the North Dakota Industrial Commission began to oversee the integrity and location of underground gathering pipelines that are not monitoredby other state or federal agencies. The U.S. Department of Transportation (the "DOT") is considering rule changes that would extend pipelinesafety regulation to previously unregulated rural gathering systems and increase safety requirements for other pipelines as well. Penalties forviolating federal safety standards have recently increased. In addition, the adoption of proposals for more stringent legislation, regulation ortaxation of natural gas drilling activity could directly curtail such activity or increase the cost of drilling, resulting in reduced levels of drilling activityand therefore reduced demand for our services. Regulatory agencies establish and from time to time change priorities, which may result inadditional burdens on us, such as additional reporting requirements and more frequent audits of operations. Our operations and the markets inwhich we participate are affected by these laws, regulations and interpretations and may be affected by changes to them or their implementation,which may cause us to realize materially lower revenues or incur materially increased operation and maintenance costs or both.Increased regulation of hydraulic fracturing could result in reductions or delays in natural gas production by our customers, whichcould materially adversely impact our revenues.Hydraulic fracturing is an important and increasingly common practice that is used to stimulate production of natural gas and/or crude oil fromdense subsurface rock formations, and is primarily presently regulated by state agencies. However, Congress has in the past and may in thefuture consider legislation to regulate hydraulic fracturing by federal agencies. Many states have already adopted laws and/or regulations thatrequire disclosure of the chemicals used in hydraulic fracturing, and are considering legal requirements that could impose more stringentpermitting, disclosure and well construction requirements on oil and/or natural gas drilling activities. The EPA is also moving forward with variousrelated regulatory actions, including approving, on April 17, 2012, new regulations requiring, among other matters, green completions ofhydraulically-fractured wells by 2015. We do not believe these new regulations will have a direct effect on our operations, but because oil and/ornatural gas production using hydraulic fracturing is growing rapidly in the United States, if new or more stringent federal, state or local legalrestrictions relating to such drilling activities or to the hydraulic fracturing process are adopted, this could result in a reduction in the supply ofnatural gas, which could adversely affect our results of operations and financial condition.We are subject to federal anti-market manipulation laws and regulations, potentially other federal regulatory requirements, and state andlocal regulation, and could be materially affected by changes in such laws and regulations, or in the way they are interpreted andenforced.We believe that our pipeline facilities qualify as gathering facilities that are exempt from the jurisdiction of FERC, the NGA and the NGPA. We are,however, subject to the anti-market manipulation provisions in the NGA, as amended by the Energy Policy Act of 2005, and to FERC's regulationsthereunder, which authorize FERC to impose fines of up to $1,000,000 per day per violation of the NGA or its implementing regulations. In addition,the Federal Trade Commission holds statutory authority under the Energy Independence and Security Act of 2007 to prevent market manipulationin oil markets, and has adopted broad rules and regulations prohibiting fraud and market manipulation. The Federal Trade Commission is alsoauthorized to seek fines of up to $1,000,000 per violation. The CFTC is directed under the Commodity Exchange Act, to prevent price manipulationin the commodity, futures and swaps markets, including the energy markets. Pursuant to the Dodd-Frank Wall Street Reform and ConsumerProtection Act of 2010, also known as the Dodd-Frank Act, and other authority, the CFTC has adopted additional anti-market manipulationregulations that prohibit fraud and price manipulation in the commodity, futures and swaps markets. The CFTC also has statutory authority to seekcivil penalties of up to the greater of $1,000,000 per violation or triple the monetary gain to the violator for each violation of the anti-marketmanipulation provisions of the Commodity Exchange Act.The distinction between federally unregulated gathering facilities and FERC-regulated transmission pipelines has been the subject of extensivelitigation and is determined by FERC on a case-by-case basis. FERC has made no determinations as to the status of our facilities. Consequently,the classification and regulation of some of our pipelines could change based on future determinations by FERC, Congress or the courts. If our gasgathering operations become subject to FERC jurisdiction over interstate service under the NGA or the NGPA, the result may25Table of Contentsmaterially adversely affect the rates we are able to charge and the services we currently provide, and may include the potential for a termination ofour gathering agreements with our customers. In addition, if any of our facilities were found to have provided services or otherwise operated inviolation of the NGA or the NGPA, this could result in the imposition of civil penalties, as well as a requirement to disgorge charges collected forsuch services in excess of the rate established by the FERC.We are subject to state and local regulation regarding the construction and operation of our gathering systems, as well as state ratable takestatutes and regulations. Regulation of the construction and operation of our facilities may affect our ability to expand our facilities or build newfacilities and such regulation may cause us to incur additional operating costs or limit the quantities of gas we may gather, treat and process.Ratable take statutes and regulations generally require gatherers to take natural gas production that may be tendered for gathering without unduediscrimination. These requirements restrict our right to decide whose production we gather, treat and process. Many states have adoptedcomplaint-based regulation of gathering, treating and processing activities, which allows producers and shippers to file complaints with stateregulators in an effort to resolve access issues, rate grievances, and other matters. Other state and municipal regulations do not directly apply toour business, but may nonetheless affect the availability of natural gas for gathering, treating and processing, including state regulation ofproduction rates, maximum daily production allowable from natural gas wells, and other activities related to drilling and operating wells. While ourfacilities currently are subject to limited state and local regulation, there is a risk that state or local laws will be changed or reinterpreted, whichmay materially affect our operations, operating costs, and revenues.We are subject to stringent environmental laws and regulations that may expose us to significant costs and liabilities.Our natural gas gathering, treating and processing operations are subject to stringent and complex federal, state and local environmental laws andregulations, including laws and regulations regarding the discharge of materials into the environment or otherwise relating to environmentalprotection, including, for example, the Clean Air Act, Comprehensive Environmental Response, Compensation, and Liability Act, Clean Water Act,Oil Pollution Act, Resource Conservation and Recovery Act, Endangered Species Act, and Toxic Substances Control Act.These laws and regulations may impose numerous obligations that are applicable to our operations, including the acquisition of permits to conductregulated activities, the incurrence of capital or operating expenditures to limit or prevent releases of materials from our pipelines and facilities, andthe imposition of substantial liabilities and remedial obligations for pollution resulting from our operations or at locations currently or previouslyowned or operated by us. Numerous governmental authorities, such as the EPA and analogous state agencies, have the power to enforcecompliance with these laws and regulations and the permits issued under them, oftentimes requiring difficult and costly corrective actions or costlypollution control measures. Failure to comply with these laws, regulations and requisite permits may result in the assessment of significantadministrative, civil and criminal penalties, the imposition of remedial obligations and the issuance of injunctions limiting or preventing some or allof our operations. In addition, we may experience a delay in obtaining or be unable to obtain required permits or regulatory authorizations, whichmay cause us to lose potential and current customers, interrupt our operations and limit our growth and revenue.There is a risk that we may incur significant environmental costs and liabilities in connection with our operations due to historical industryoperations and waste disposal practices, our handling of hydrocarbons and other wastes and potential emissions and discharges related to ouroperations. Joint and several, strict liability may be incurred, without regard to fault, under certain of these environmental laws and regulations inconnection with discharges or releases of hydrocarbon wastes on, under or from our properties and facilities, many of which have been used formidstream activities for a number of years, oftentimes by third parties not under our control. Private parties, including the owners of the propertiesthrough which our gathering systems pass, and on which certain of our facilities are located, may also have the right to pursue legal actions toenforce compliance as well as to seek damages for non-compliance with environmental laws and regulations or for personal injury or propertydamage. For example, an accidental release from one of our pipelines could subject us to substantial liabilities arising from environmental cleanupand restoration costs, claims made by neighboring landowners and other third parties for personal injury and property damage and fines orpenalties for related violations of environmental laws or regulations. In addition, changes in environmental laws occur frequently, and any suchchanges that result in additional permitting obligations or more stringent and costly waste handling, storage, transport, disposal or remediationrequirements could have a material adverse effect on our operations or financial position. We may not be able to recover all or any of these costsfrom insurance.26Table of ContentsWe may incur greater than anticipated costs and liabilities as a result of pipeline safety requirements.The DOT, through its PHMSA, has adopted and enforces safety standards and procedures applicable to our pipelines. In addition, many states,including the states in which we operate, have adopted regulations that are identical to or more restrictive than existing DOT regulations forintrastate pipelines. Among the regulations applicable to us, the PHMSA requires pipeline operators to develop integrity management programs forcertain pipelines located in high consequence areas, which include high population areas such as the Dallas-Fort Worth greater metropolitan areawhere our DFW Midstream system is located. While the majority of our pipelines meet the DOT definition of gathering lines and are thus exemptfrom the PHMSA's integrity management requirements, we also operate a limited number of pipelines that are subject to the integrity managementrequirements. The regulations require operators, including us, to:•perform ongoing assessments of pipeline integrity;•identify and characterize applicable threats to pipeline segments that could impact a high consequence area;•maintain processes for data collection, integration and analysis;•repair and remediate pipelines as necessary;•adopt and maintain procedures, standards and training programs for control room operations; and•implement preventive and mitigating actions.The PHMSA is considering changes to its safety regulations, including whether to revise the integrity management requirements and whether tochange the definition of gathering pipelines, which could subject many currently exempted pipelines to PHMSA regulations and could have amaterial adverse effect on our operations and costs of transportation services. The PHMSA has also issued an Advisory Bulletin which, amongother things, advises pipeline operators that if they are relying on design, construction, inspection, testing or other data to determine the pressuresat which their pipelines should operate, the records of that data must be traceable, verifiable and complete. Locating such records and, in theabsence of any such records, verifying maximum pressures through physical testing or modifying or replacing facilities to meet the demands ofsuch pressures, could significantly increase our costs. Additionally, failure to locate such records or verify maximum pressures could result inreductions of allowable operating pressures, which would reduce available capacity of our pipelines. While we believe that we are in compliancewith existing safety laws and regulations, increased penalties for safety violations and potential regulatory changes could have a material adverseeffect on our operations, operating and maintenance expenses, and revenues.Climate change legislation, regulatory initiatives and litigation could result in increased operating costs and reduced demand for thenatural gas services we provide.In recent years, the U.S. Congress has considered legislation to restrict or regulate emissions of greenhouse gases, such as carbon dioxide andmethane that may be contributing to global warming. It presently appears unlikely that comprehensive climate legislation will be passed by eitherhouse of Congress in the near future, although energy legislation and other initiatives are expected to be proposed that may be relevant togreenhouse gas emissions issues. In addition, almost half of the states, either individually or through multi-state regional initiatives, have begun toaddress greenhouse gas emissions, primarily through the planned development of emission inventories or regional greenhouse gas cap and tradeprograms. Most of these cap and trade programs work by requiring either major sources of emissions, such as electric power plants, or majorproducers of fuels, such as refineries and gas processing plants, to acquire and surrender emission allowances. In general, the number ofallowances available for purchase is reduced each year until the overall greenhouse gas emission reduction goal is achieved. Depending on thescope of a particular program, we could be required to purchase and surrender allowances for greenhouse gas emissions resulting from ouroperations (e.g., at compressor stations). Although most of the state-level initiatives have to date been focused on large sources of greenhousegas emissions, such as electric power plants, it is possible that our sources, such as our gas-fired compressors, could become subject to state-level greenhouse gas-related regulation.Independent of Congress, the EPA has begun to adopt regulations under its existing Clean Air Act authority. In 2009, the EPA published itsfindings that emissions of GHGs present an endangerment to public health and the environment because emissions of such gases are contributingto warming of the earth's atmosphere and other climatic changes. Based on these findings, the EPA adopted regulations that, among other things,establish PSD construction and Title V operating permit reviews for certain large stationary sources of GHG emissions. In addition,27Table of Contentsin September 2009, the EPA issued a final rule requiring the reporting of GHG emissions from specified large greenhouse gas emitting sources inthe United States beginning in 2011 for emissions in 2010. In November 2010, the EPA published a final rule expanding the reporting requirementto include onshore and offshore crude oil and natural gas systems beginning in 2012. These rules require that we report our GHG emissions forcertain of our assets.Although it is not possible at this time to accurately estimate how potential future laws or regulations addressing GHG emissions would impact ourbusiness, either directly or indirectly, any future federal or state laws or implementing regulations that may be adopted to address greenhouse gasemissions could require us to incur increased operating costs and could materially adversely affect demand for the natural gas we gather, treat orprocess in connection with our services. The potential increase in the costs of our operations resulting from any legislation or regulation to restrictemissions of greenhouse gases could include new or increased costs to operate and maintain our facilities, install new emission controls on ourfacilities, acquire allowances to authorize our greenhouse gas emissions, pay any taxes related to our GHG emissions and administer and managea GHG emissions program. While we may be able to include some or all of such increased costs in the rates we charge, such recovery of costs isuncertain. Moreover, incentives to conserve energy or use alternative energy sources could reduce demand for natural gas, resulting in a decreasein demand for our services. We cannot predict with any certainty at this time how these possibilities may affect our operations.The adoption and implementation of new statutory and regulatory requirements for swap transactions could have an adverse impact onour ability to hedge risks associated with our business and increase the working capital requirements to conduct these activities.Congress adopted comprehensive financial reform legislation under the Dodd-Frank Act that establishes federal oversight and regulation of theover-the-counter, or OTC, derivatives market and entities, such as us, that participate in that market. This legislation requires the CFTC and theSEC and other regulatory authorities to promulgate certain rules and regulations, including rules and regulations relating to the regulation of certainswaps market participants, the clearing of certain swaps through central counterparties, the execution of certain swaps on designated contractmarkets or swap execution facilities, and the reporting and recordkeeping of swaps. While many of the regulations have been promulgated and arealready in effect, the rulemaking and implementation process is still ongoing, and we cannot yet predict the ultimate effect of the rules andregulations on our business.The CFTC has previously established position limits on certain core futures and equivalent swaps contracts in the major energy, including naturalgas, and other markets, with exceptions for certain bona fide hedging transactions provided that various conditions are satisfied. Once finalized,the position limits rule and its companion rule on aggregation may have an impact on our ability to hedge our exposure to certain enumeratedcommodities.In 2013, the CFTC implemented final rules regarding mandatory clearing of certain classes of interest rate swaps and certain classes of indexcredit default swaps. Mandatory trading on designated contract markets or swap execution facilities of certain interest rate swaps and index creditdefault swaps also began in 2014. At this time, the CFTC has not proposed any rules designating other classes of swaps, including physicalcommodity swaps, for mandatory clearing. Although we may qualify for the end-user exception from the mandatory clearing and trade executionrequirements for our swaps entered into to hedge commercial risks, mandatory clearing and trade execution requirements applicable to othermarket participants, such as swap dealers, may change the cost and availability of the swaps that we use for hedging. In addition, for unclearedswaps, the CFTC or federal banking regulatory authorities may require our counterparties to require that we enter into credit support documentationand/or post margin as collateral; however, the proposed margin rules are not yet final and therefore the application of those rules to us is uncertainat this time.Under the Dodd-Frank Act, the CFTC is also directed generally to prevent price manipulation and fraud in the following two markets: (a) physicalcommodities traded in interstate commerce, including physical energy and other commodities, as well as (b) financial instruments, such asfutures, options and swaps. Pursuant to the Dodd-Frank Act, the CFTC has adopted additional anti-market manipulation, anti-fraud and disruptivetrading practices regulations that prohibit, among other things, fraud and price manipulation in the physical commodities, futures, options andswaps markets. Should we violate these laws and regulations, we could be subject to CFTC enforcement action and material penalties, andsanctions.To further define the term “swap,” the CFTC has issued several interpretations clarifying whether certain forwards with optionality will remain asforwards or would qualify as options on commodities and therefore swaps. Once finalized, this interpretation may have an impact on our ability toenter into certain forwards.28Table of ContentsWe currently receive a fuel retainage fee from certain of our customers that is paid in-kind to offset the costs we incur to operate our electric-drivecompression assets in the Barnett Shale. We currently enter into forward contracts with third parties to buy power and sell natural gas in anattempt to hedge our exposure to fluctuations in the price of natural gas with respect to those volumes. The impact of the Dodd-Frank Act on ourhedging activities is uncertain at this time. However, the new legislation and any new regulations could significantly increase the cost of derivativecontracts (including through requirements to post collateral which could adversely affect our available liquidity), materially alter the terms ofderivative contracts, reduce the availability of derivatives to protect against risks that we encounter, reduce our ability to monetize or restructureour existing derivative contracts, and increase our exposure to less creditworthy counterparties. The Dodd-Frank Act may also materially affect ourcustomers and materially and adversely affect the demand for our services.In addition to the Dodd-Frank Act, the European Union and other foreign regulators have adopted and are implementing local reforms generallycomparable with the reforms under the Dodd-Frank Act. Implementation and enforcement of these regulatory provisions may reduce our ability tohedge our market risks with non-U.S. counterparties and may make our transactions involving cross-border swaps more expensive andburdensome. Additionally, the lack of regulatory equivalency across jurisdictions may increase compliance costs and make it more difficult tosatisfy our regulatory obligations. Ongoing litigation regarding the scope of the cross-border rules also creates further uncertainty as to theapplication of the rules in the cross-border context.We do not own all of the land on which our pipelines and facilities are located, which could result in disruptions to our operations.We do not own all of the land on which our pipelines and facilities have been constructed, and we are, therefore, subject to the possibility of moreonerous terms and/or increased costs to retain necessary land use if we do not have valid rights-of-way or if such rights-of-way lapse or terminateor if our pipelines are not properly located within the boundaries of such rights-of-way. We obtain the rights to construct and operate our pipelineson land owned by third parties and governmental agencies for a specific period of time. If we were to be unsuccessful in renegotiating rights-of-way, we might have to relocate our facilities. Our loss of these rights, through our inability to renew right-of-way contracts or otherwise, could havea material adverse effect on our business, results of operations, financial condition and ability to make cash distributions to our unitholders.Terrorist attacks and threats, escalation of military activity in response to these attacks or acts of war could have a material adverse effecton our business, financial condition or results of operations.Terrorist attacks and threats, escalation of military activity or acts of war may have significant effects on general economic conditions,fluctuations in consumer confidence and spending and market liquidity, each of which could materially and adversely affect our business. Futureterrorist attacks, rumors or threats of war, actual conflicts involving the United States or its allies, or military or trade disruptions may significantlyaffect our operations and those of our customers. Strategic targets, such as energy-related assets, may be at greater risk of future attacks thanother targets in the United States. Disruption or significant increases in energy prices could result in government-imposed price controls. It ispossible that any of these occurrences, or a combination of them, could have a material adverse effect on our business, financial condition andresults of operations.Our operations depend on the use of information technology ("IT") systems that could be the target of a cyber-attack.Our operations depend on the use of sophisticated IT systems. Our IT systems and networks, as well as those of our customers, vendors andcounterparties, may become the target of cyber-attacks or information security breaches, which in turn could result in the unauthorized release andmisuse of confidential or proprietary information as well as disrupt our operations or damage our facilities or those of third parties, which couldhave a material adverse effect on our revenues and increase our operating and capital costs, which could reduce the amount of cash otherwiseavailable for distribution. We may be required to incur additional costs to modify or enhance our IT systems or in order to prevent or remediate anysuch attacks.Our ability to operate our business effectively could be impaired if we fail to attract and retain key management personnel.Our ability to operate our business and implement our strategies depends on our continued ability to attract and retain highly skilled managementpersonnel with midstream natural gas industry experience and competition for these persons in the midstream natural gas industry is intense.Given our size, we may be at a disadvantage, relative to our larger competitors, in the competition for these personnel. We may not be able tocontinue to employ our senior executives and key personnel or attract and retain qualified personnel in the future, and our failure to29Table of Contentsretain or attract our senior executives and key personnel could have a material adverse effect on our ability to effectively operate our business.If we fail to develop or maintain an effective system of internal controls, we may not be able to report our financial results timely andaccurately or prevent fraud, which would likely have a negative impact on the market price of our common units.As a publicly traded partnership, we are subject to the public reporting requirements of the Securities Exchange Act of 1934, as amended,including the rules thereunder that will require our management to certify financial and other information in our quarterly and annual reports andprovide an annual management report on the effectiveness of our internal control over financial reporting. Effective internal controls are necessaryfor us to provide reliable and timely financial reports, prevent fraud and to operate successfully as a publicly traded partnership. We prepare ourconsolidated financial statements in accordance with accounting principles generally accepted in the United States of America. Our efforts todevelop and maintain our internal controls may not be successful and we may be unable to maintain effective controls over our financial processesand reporting in the future or to comply with our obligations under Section 404 of the Sarbanes-Oxley Act of 2002.Given the difficulties inherent in the design and operation of internal controls over financial reporting, in addition to our limited accounting personneland management resources, we can provide no assurance as to our or our independent registered public accounting firm's future conclusionsabout the effectiveness of our internal controls, and we may incur significant costs in our efforts to comply with Section 404 of the Sarbanes-OxleyAct of 2002. Any failure to implement and maintain effective internal controls over financial reporting could subject us to regulatory scrutiny and aloss of confidence in our reported financial information, which could have an adverse effect on our business and would likely have a negativeeffect on the trading price of our common units.Risks Inherent in an Investment in UsSummit Investments indirectly owns and controls our general partner, which has sole responsibility for conducting our business andmanaging our operations as well as limited duties to us and our unitholders. Our general partner and its affiliates have conflicts ofinterest with us and they may favor their own interests to the detriment of us and our unitholders.Summit Investments controls our general partner and has authority to appoint all of the officers and directors of our general partner, some of whomwill also be officers, directors or principals of Energy Capital Partners, the entity that controls Summit Investments. Although our general partnerhas a duty to manage us in a manner that is in our best interests, the directors and officers of our general partner also have a duty to manage ourgeneral partner in a manner that is in the best interests of its owner. Conflicts of interest will arise between Summit Investments and its ownersand our general partner, on the one hand, and us and our unitholders, on the other hand. In resolving these conflicts of interest, our general partnermay favor its own interests and the interests of Summit Investments and its owners over our interests and the interests of our unitholders. Theseconflicts include the following situations, among others:•Neither our partnership agreement nor any other agreement requires Summit Investments or its owners to pursue a business strategy thatfavors us, and the directors and officers of Summit Investments have a fiduciary duty to make these decisions in the best interests of theowners of Summit Investments, which may be contrary to our interests. Summit Investments may choose to shift the focus of theirinvestment and growth to areas not served by our assets.•Summit Investments is not limited in its ability to compete with us and may offer business opportunities or sell midstream assets to thirdparties without first offering us the right to bid for them.•Our general partner is allowed to take into account the interests of parties other than us, such as Summit Investments and its owners, inresolving conflicts of interest.•Our partnership agreement replaces the fiduciary duties that would otherwise be owed by our general partner to us and our unitholders withcontractual standards governing its duties to us and our unitholders. These contractual standards limit our general partner's liabilities andthe rights of our unitholders with respect to actions that, without the limitations, might constitute breaches of fiduciary duty.•Except in limited circumstances, our general partner has the power and authority to conduct our business without unitholder approval.30Table of Contents•Our general partner determines the amount and timing of asset purchases and sales, borrowings, issuance of additional partnershipinterests and the creation, reduction or increase of reserves, each of which can affect the amount of cash that is distributed to ourunitholders.•Our general partner determines the amount and timing of any capital expenditures and whether a capital expenditure is classified as amaintenance capital expenditure, which reduces operating surplus, or an expansion capital expenditure, which does not reduce operatingsurplus. This determination can affect the amount of cash that is distributed to our unitholders and to our general partner and the ability ofthe subordinated units to convert to common units.•Our general partner determines which costs incurred by it are reimbursable by us.•Our general partner may cause us to borrow funds to permit the payment of cash distributions, even if the purpose or effect of theborrowing is to make a distribution on the subordinated units, to make incentive distributions or to accelerate the expiration of thesubordination period.•Our partnership agreement permits us to classify up to $50.0 million as operating surplus, even if it is generated from asset sales, non-working capital borrowings or other sources that would otherwise constitute capital surplus. This cash may be used to fund distributions onour subordinated units or to our general partner in respect of the general partner interest or the incentive distribution rights.•Our partnership agreement does not restrict our general partner from causing us to pay it or its affiliates for any services rendered to us orentering into additional contractual arrangements with any of these entities on our behalf.•Our general partner intends to limit its liability regarding our contractual and other obligations.•Our general partner may exercise its right to call and purchase all of the common units not owned by it and its affiliates if they own morethan 80% of the common units.•Our general partner controls the enforcement of the obligations that it and its affiliates owe to us.•Our general partner decides whether to retain separate counsel, accountants or others to perform services for us.•Our general partner may elect to cause us to issue common units to it in connection with a resetting of the target distribution levels relatedto our general partner's incentive distribution rights without the approval of the conflicts committee of the board of directors of our generalpartner or our unitholders. This election may result in lower distributions to our other unitholders in certain situations.Our Sponsor is not limited in its ability to compete with us and is not obligated to offer us the opportunity to acquire additional assetsor businesses, which could limit our ability to grow and could materially adversely affect our results of operations and cash available fordistribution to our unitholders.Energy Capital Partners has significantly greater resources than us and has experience making investments in midstream energy businesses.Energy Capital Partners may compete with us for investment opportunities and may own interests in entities that compete with us. Energy CapitalPartners is not prohibited from owning assets or engaging in businesses that compete directly or indirectly with us. In addition, in the future,Energy Capital Partners may acquire, construct or dispose of additional midstream or other assets and may be presented with new businessopportunities, without any obligation to offer us the opportunity to purchase or construct such assets or to engage in such business opportunities.While Summit Investments has indicated that it intends to offer us the opportunity to acquire its interests in its midstream assets, it is not underany contractual obligation to do so and we are unable to predict whether or when such opportunities may arise.Pursuant to the terms of our partnership agreement, the doctrine of corporate opportunity, or any analogous doctrine, does not apply to our generalpartner, its officers and directors or any of its affiliates, including our Sponsor and its respective executive officers, directors and principals. Anysuch person or entity that becomes aware of a potential transaction, agreement, arrangement or other matter that may be an opportunity for us willnot have any duty to communicate or offer such opportunity to us. Any such person or entity will not be liable to us or to any limited partner forbreach of any fiduciary duty or other duty by reason of the fact that such person or entity pursues or acquires such opportunity for itself, directssuch opportunity to another person or entity or does not communicate such opportunity or information to us. This may create actual and potentialconflicts of interest between us and affiliates of our general partner and result in less than favorable treatment of us and our unitholders.31Table of ContentsThe amount of cash we have available for distribution to holders of our common and subordinated units depends primarily on our cashflow rather than on our profitability, which may prevent us from making distributions, even during periods in which we record netincome.The amount of cash we have available for distribution depends primarily upon our cash flow and not solely on profitability, which will be affected bynon-cash items. As a result, we may make cash distributions during periods when we record losses for financial accounting purposes and may notmake cash distributions during periods when we record net earnings for financial accounting purposes.The market price of our common units may fluctuate significantly and, due to limited daily trading volumes, an investor could lose all orpart of its investment in us.There were 29,132,942 publicly held common units at December 31, 2014. In addition, a subsidiary of Summit Investments, which controls ourgeneral partner, owned 5,293,571 common and 24,409,850 subordinated units. An investor may not be able to resell its common units at or aboveits acquisition price. Additionally, a lack of liquidity may result in wide bid-ask spreads, contribute to significant fluctuations in the market price ofthe common units and limit the number of investors who are able to buy the common units.The market price of our common units may decline and be influenced by many factors, some of which are beyond our control, including amongothers:•our quarterly distributions;•our quarterly or annual earnings or those of other companies in our industry;•the loss of a large customer;•announcements by us or our competitors of significant contracts or acquisitions;•changes in accounting standards, policies, guidance, interpretations or principles;•general economic conditions;•the failure of securities analysts to cover our common units or changes in financial estimates by analysts;•future sales of our common units; and•other factors described in these Risk Factors.Our partnership agreement replaces our general partner's fiduciary duties to unitholders with contractual standards governing its duties.Our partnership agreement contains provisions that eliminate fiduciary duties to which our general partner would otherwise be held by statefiduciary duty law and replaces those duties with several different contractual standards. For example, our partnership agreement permits ourgeneral partner to make a number of decisions in its individual capacity, as opposed to in its capacity as our general partner or otherwise, free ofany duties to us and our unitholders, other than the implied contractual covenant of good faith and fair dealing. This entitles our general partner toconsider only the interests and factors that it desires and relieves it of any duty or obligation to give any consideration to any interest of, or factorsaffecting, us, our affiliates or our limited partners. Examples of decisions that our general partner may make in its individual capacity include,among others:•how to allocate corporate opportunities among us and its affiliates;•whether to exercise its limited call right;•whether to seek approval of the resolution of a conflict of interest by the conflicts committee of the board of directors of our generalpartner;•how to exercise its voting rights with respect to the units it owns;•whether to exercise its registration rights;•whether to elect to reset target distribution levels;•whether to transfer the incentive distribution rights or any units it owns to a third party; and•whether or not to consent to any merger or consolidation of the partnership or amendment to the partnership agreement.32Table of ContentsBy purchasing a common unit, a common unitholder agrees to become bound by the provisions in the partnership agreement, including theprovisions discussed above.Our partnership agreement limits the liabilities of our general partner and the rights of our unitholders with respect to actions taken byour general partner that might otherwise constitute breaches of fiduciary duty.Our partnership agreement contains provisions that limit the liability of our general partner and the rights of our unitholders with respect to actionstaken by our general partner that might otherwise constitute breaches of fiduciary duty under state fiduciary duty law. For example, our partnershipagreement provides that:•whenever our general partner makes a determination or takes, or declines to take, any other action in its capacity as our general partner,our general partner is required to make such determination, or take or decline to take such other action, in good faith, meaning that itsubjectively believed that the decision was in our best interests, and will not be subject to any other or different standard imposed by ourpartnership agreement, Delaware law, or any other law, rule or regulation, or at equity;•our general partner will not have any liability to us or our unitholders for decisions made in its capacity as a general partner so long assuch decisions are made in good faith;•our general partner and its officers and directors will not be liable for monetary damages to us, our limited partners or their assigneesresulting from any act or omission unless there has been a final and non-appealable judgment entered by a court of competent jurisdictiondetermining that our general partner or its officers and directors, as the case may be, acted in bad faith or engaged in fraud or willfulmisconduct or, in the case of a criminal matter, acted with knowledge that the conduct was criminal; and•our general partner will not be in breach of its obligations under the partnership agreement or its duties to us or our unitholders if atransaction with an affiliate or the resolution of a conflict of interest is:(i)approved by the conflicts committee of the board of directors of our general partner, although our general partner is not obligated toseek such approval;(ii)approved by the vote of a majority of the outstanding common units, excluding any common units owned by our general partner andits affiliates;(iii)on terms no less favorable to us than those generally being provided to or available from unrelated third parties; or(iv)fair and reasonable to us, taking into account the totality of the relationships among the parties involved, including other transactionsthat may be particularly favorable or advantageous to us.In connection with a situation involving a transaction with an affiliate or a conflict of interest, any determination by our general partner or theconflicts committee must be made in good faith. If an affiliate transaction or the resolution of a conflict of interest is not approved by our commonunitholders or the conflicts committee and the board of directors of our general partner determines that the resolution or course of action taken withrespect to the affiliate transaction or conflict of interest satisfies either of the standards set forth in the final two subclauses above, then it will bepresumed that, in making its decision, the board of directors acted in good faith, and in any proceeding brought by or on behalf of any limitedpartner or the partnership, the person bringing or prosecuting such proceeding will have the burden of overcoming such presumption.Our general partner intends to limit its liability regarding our obligations.Our general partner intends to limit its liability under contractual arrangements so that the counterparties to such arrangements have recourse onlyagainst our assets, and not against our general partner or its assets. Our general partner may therefore cause us to incur indebtedness or otherobligations that are nonrecourse to our general partner. Our partnership agreement provides that any action taken by our general partner to limit itsliability is not a breach of our general partner's fiduciary duties, even if we could have obtained more favorable terms without the limitation onliability. In addition, we are obligated to reimburse or indemnify our general partner to the extent that it incurs obligations on our behalf. Any suchreimbursement or indemnification payments would reduce the amount of cash otherwise available for distribution to our unitholders.Our partnership agreement requires that we distribute all of our available cash, which could limit our ability to grow and makeacquisitions.We expect that we will distribute all of our available cash to our unitholders and will rely primarily upon external financing sources, includingcommercial bank borrowings and the issuance of debt and equity securities, to fund our33Table of Contentsacquisitions and expansion capital expenditures. As a result, to the extent we are unable to finance growth externally, our cash distribution policywill significantly impair our ability to grow.In addition, because we intend to distribute all of our available cash, we may not grow as quickly as businesses that reinvest their available cashto expand ongoing operations. To the extent we issue additional units in connection with any acquisitions or expansion capital expenditures, thepayment of distributions on those additional units may increase the risk that we will be unable to maintain or increase our per-unit distribution level.There are no limitations in our partnership agreement or our amended and restated revolving credit facility on our ability to issue additional units,including units ranking senior to the common units. The incurrence of additional commercial borrowings or other debt to finance our growth strategywould result in increased interest expense, which, in turn, may impact the available cash that we have to distribute to our unitholders.While our partnership agreement requires us to distribute all of our available cash, our partnership agreement, including provisionsrequiring us to make cash distributions contained therein, may be amended.While our partnership agreement requires us to distribute all of our available cash, our partnership agreement, including provisions requiring us tomake cash distributions contained therein, may be amended. Our partnership agreement generally may not be amended during the subordinationperiod without the approval of our public common unitholders. However, our partnership agreement can be amended with the consent of our generalpartner and the approval of a majority of the outstanding common units (including common units held by affiliates of our general partner) after thesubordination period has ended. As of December 31, 2014, a subsidiary of Summit Investments, which owns and controls our general partner,owned 5,293,571 common units and 24,409,850 subordinated units.Reimbursements due to our general partner and its affiliates for services provided to us or on our behalf will reduce cash available fordistribution to our common unitholders. The amount and timing of such reimbursements will be determined by our general partner.Prior to making any distribution on our common units, we will reimburse our general partner and its affiliates, including Summit Investments, forexpenses they incur and payments they make on our behalf. Under our partnership agreement, we will reimburse our general partner and itsaffiliates for certain expenses incurred on our behalf, including administrative costs, such as compensation expense for those persons who provideservices necessary to run our business. Our partnership agreement provides that our general partner will determine in good faith the expenses thatare allocable to us. The reimbursement of expenses and payment of fees, if any, to our general partner and its affiliates will reduce the amount ofavailable cash to pay cash distributions to our unitholders.Our general partner may elect to cause us to issue common units to it in connection with a resetting of the minimum quarterlydistribution and the target distribution levels related to our general partner's incentive distribution rights without the approval of theconflicts committee of our general partner's board or our unitholders. This election may result in lower distributions to our unitholdersin certain situations.Our general partner has the right, at any time when there are no subordinated units outstanding and it has received incentive distributions at thehighest level to which it is entitled (48.0%) for each of the prior four consecutive fiscal quarters (and the amount of each such distribution did notexceed adjusted operating surplus for such quarter), to reset the initial target distribution levels at higher levels based on our cash distribution atthe time of the exercise of the reset election. Following a reset election by our general partner, the minimum quarterly distribution will be reset toan amount equal to the average cash distribution per unit for the two fiscal quarters immediately preceding the reset election (such amount isreferred to as the reset minimum quarterly distribution), and the target distribution levels will be reset to correspondingly higher levels based onpercentage increases above the reset minimum quarterly distribution.In the event of a reset of target distribution levels, our general partner will be entitled to receive the number of common units equal to that numberof common units that would have entitled it to an average aggregate quarterly cash distribution in the prior two quarters equal to the average of thedistributions on the incentive distribution rights in the prior two quarters. Our general partner will also be issued the number of general partner unitsnecessary to maintain its general partner interest in us that existed immediately prior to the reset election. We anticipate that our general partnerwould exercise this reset right to facilitate acquisitions or internal growth projects that would not be sufficiently accretive to cash distributions percommon unit without such conversion; however, it is possible that our general partner could exercise this reset election at a time when we areexperiencing declines in our aggregate cash distributions or at a time when our general partner expects that we will experience declines in ouraggregate cash distributions in the foreseeable future. In such situations, our general partner may be experiencing, or may34Table of Contentsexpect to experience, declines in the cash distributions it receives related to its incentive distribution rights and may therefore desire to be issuedcommon units, which are entitled to specified priorities with respect to our distributions and which therefore may be more advantageous for thegeneral partner to own in lieu of the right to receive incentive distribution payments based on target distribution levels that are less certain to beachieved in the then-current business environment. As a result, a reset election may cause our common unitholders to experience dilution in theamount of cash distributions that they would have otherwise received had we not issued common units to our general partner in connection withresetting the target distribution levels related to our general partner's incentive distribution rights.Holders of our common units have limited voting rights and are not entitled to elect our general partner or its directors.Unlike the holders of common stock in a corporation, holders of our common units have only limited voting rights on matters affecting our businessand, therefore, limited ability to influence management's decisions regarding our business. Unitholders will have no right on an annual or ongoingbasis to elect our general partner or its board of directors. The board of directors of our general partner will be chosen by Summit Investments.Furthermore, if the unitholders are dissatisfied with the performance of our general partner, they will have little ability to remove our general partner.As a result of these limitations, the price at which the common units will trade could be diminished because of the absence or reduction of atakeover premium in the trading price. Our partnership agreement also contains provisions limiting the ability of unitholders to call meetings or toacquire information about our operations, as well as other provisions limiting the unitholders' ability to influence the manner or direction ofmanagement.Even if holders of our common units are dissatisfied, they cannot initially remove our general partner without its consent.The unitholders initially will be unable to remove our general partner without its consent because our general partner and its affiliates own sufficientunits to be able to prevent its removal. The vote of the holders of at least 662/3% of all outstanding limited partner units voting together as a singleclass is required to remove our general partner. As of December 31, 2014, Summit Investments, which controls our general partner, indirectlyowned 5,293,571 common units out of 34,426,513 outstanding common units and all of our 24,409,850 subordinated units. Also, if our generalpartner is removed without cause during the subordination period and units held by our general partner and its affiliates are not voted in favor ofthat removal, all remaining subordinated units will automatically convert into common units and any existing arrearages on our common units willbe extinguished. A removal of our general partner under these circumstances would materially adversely affect our common units by prematurelyeliminating their distribution and liquidation preference over our subordinated units, which would otherwise have continued until we had met certaindistribution and performance tests. Cause is narrowly defined to mean that a court of competent jurisdiction has entered a final, non-appealablejudgment finding our general partner liable for actual fraud or willful or wanton misconduct in its capacity as our general partner. Cause does notinclude most cases of charges of poor management of the business, so the removal of our general partner because of the unitholder'sdissatisfaction with our general partner's performance in managing our partnership will most likely result in the termination of the subordinationperiod and conversion of all subordinated units to common units.Our partnership agreement restricts the voting rights of unitholders owning 20% or more of our common units.Unitholders' voting rights are further restricted by a provision of our partnership agreement providing that any person or group that owns 20% ormore of any class of units then outstanding cannot vote on any matter, other than our general partner, its affiliates, their transferees and personswho acquired such units with the prior approval of the board of directors of our general partner.Our general partner interest or the control of our general partner may be transferred to a third party without unitholder consent.Our general partner may transfer its general partner interest to a third party in a merger or in a sale of all or substantially all of its assets withoutthe consent of the unitholders. Furthermore, our partnership agreement does not restrict the ability of Summit Investments to transfer all or aportion of its ownership interest in our general partner to a third party. The new owner of our general partner would then be in a position to replacethe board of directors and officers of our general partner with its own designees and thereby exert significant control over the decisions made bythe board of directors and officers. This effectively permits a change of control without the vote or consent of the unitholders.35Table of ContentsThe incentive distribution rights of our general partner may be transferred to a third party without unitholder consent.Our general partner may transfer the incentive distribution rights it owns to a third party at any time without the consent of our unitholders. If ourgeneral partner transfers the incentive distribution rights to a third party but retains its general partner interest, our general partner may not havethe same incentive to grow our business and increase quarterly distributions to unitholders over time as it would if it had retained ownership of theincentive distribution rights. For example, a transfer of the incentive distribution rights by our general partner could reduce the likelihood of SummitInvestments selling or contributing additional midstream assets to us, as Summit Investments would have less of an economic incentive to growour business, which in turn would impact our ability to grow our asset base.We may issue additional units without unitholder approval, which would dilute existing ownership interests.Our partnership agreement does not limit the number of additional limited partner interests, including limited partner interests that rank senior to thecommon units that we may issue at any time without the approval of our unitholders. The issuance by us of additional common units or otherequity securities of equal or senior rank will have the following effects:•our existing unitholders' proportionate ownership interest in us will decrease;•the amount of cash available for distribution on each unit may decrease;•because a lower percentage of total outstanding units will be subordinated units, the risk that a shortfall in the payment of the minimumquarterly distribution will be borne by our common unitholders will increase;•because the amount payable to holders of incentive distribution rights is based on a percentage of the total cash available for distribution,the distributions to holders of incentive distribution rights will increase even if the per-unit distribution on common units remains the same;•the ratio of taxable income to distributions may increase;•the relative voting strength of each previously outstanding unit may be diminished; and•the market price of the common units may decline.Summit Investments may sell units in the public or private markets, and such sales could have an adverse impact on the trading price ofthe common units.As of December 31, 2014, a subsidiary of Summit Investments held an aggregate of 5,293,571 common units and 24,409,850 subordinated units.All of the subordinated units will convert into common units at the end of the subordination period. In addition, we have agreed to provide thisaffiliate with certain registration rights. The sale of these units in the public or private markets could have an adverse impact on the price of thecommon units or on any trading market that may develop.Our general partner has a limited call right that may require an investor to sell its units at an undesirable time or price.If at any time our general partner and its affiliates own more than 80% of our outstanding common units, our general partner will have the right,which it may assign to any of its affiliates or to us, but not the obligation, to acquire all, but not less than all, of the common units held byunaffiliated persons at a price that is not less than their then-current market price, as calculated pursuant to the terms of our partnershipagreement. As a result, an investor may be required to sell its common units at an undesirable time or price and may not receive any return on itsinvestment. An investor may also incur a tax liability upon a sale of its units. As of December 31, 2014, Summit Investments owned 5,293,571common units and 24,409,850 subordinated units. At the end of the subordination period, assuming no acquisitions, dispositions, retirement oradditional issuance of common units (other than upon the conversion of the subordinated units), Summit Investments will own 29,703,421 commonunits, or approximately 50.5% of our then-outstanding common units.An investor's liability may not be limited if a court finds that unitholder action constitutes control of our business.A general partner of a partnership generally has unlimited liability for the obligations of the partnership, except for those contractual obligations ofthe partnership that are expressly made without recourse to the general partner. Our partnership is organized under Delaware law, and we conductbusiness in a number of other states. The limitations on the liability of holders of limited partner interests for the obligations of a limited partnershiphave not36Table of Contentsbeen clearly established in some of the other states in which we do business. An investor could be liable for any and all of our obligations as if itwas a general partner if a court or government agency were to determine that:•we were conducting business in a state but had not complied with that particular state's partnership statute; or•an investor's right to act with other unitholders to remove or replace our general partner, to approve some amendments to our partnershipagreement or to take other actions under our partnership agreement constitute control of our business.Unitholders may have liability to repay distributions that were wrongfully distributed to them.Under certain circumstances, unitholders may have to repay amounts wrongfully returned or distributed to them. Under Delaware Law, we may notmake a distribution if the distribution would cause our liabilities to exceed the fair value of our assets. Delaware law provides that for a period ofthree years from the date of an impermissible distribution, limited partners who received the distribution and who knew at the time of thedistribution that it violated Delaware law will be liable to the limited partnership for the distribution amount. Substituted limited partners are liableboth for the obligations of the assignor to make contributions to the partnership that were known to the substituted limited partner at the time itbecame a limited partner and for those obligations that were unknown if the liabilities could have been determined from the partnership agreement.Neither liabilities to partners on account of their partnership interest nor liabilities that are non-recourse to the partnership are counted for purposesof determining whether a distribution is permitted.If an investor is not an eligible holder, it may not receive distributions or allocations of income or loss on those common units andthose common units will be subject to redemption.We have adopted certain requirements regarding those investors who may own our common and subordinated units. Eligible holders are U.S.individuals or entities subject to U.S. federal income taxation on the income generated by us or entities not subject to U.S. federal income taxationon the income generated by us, so long as all of the entity's owners are U.S. individuals or entities subject to such taxation. If an investor is not aneligible holder, our general partner may elect not to make distributions or allocate income or loss on that investor's units, and it runs the risk ofhaving its units redeemed by us at the lower of purchase price cost and the then-current market price. The redemption price may be paid in cashor by delivery of a promissory note, as determined by our general partner.The New York Stock Exchange does not require a publicly traded partnership like us to comply with certain of its corporate governancerequirements.We have listed our common units on the New York Stock Exchange. Because we are a publicly traded partnership, the New York Stock Exchangedoes not require us to have, and we do not intend to have, a majority of independent directors on our general partner's board of directors or toestablish a nominating and corporate governance committee. Additionally, any future issuance of additional common units or other securities,including to affiliates, will not be subject to the New York Stock Exchange's shareholder approval rules. Accordingly, unitholders will not have thesame protections afforded to certain corporations that are subject to all of the New York Stock Exchange corporate governance requirements.Tax RisksOur tax treatment depends on our status as a partnership for federal income tax purposes. If the Internal Revenue Service (the "IRS")were to treat us as a corporation for federal income tax purposes, which would subject us to entity-level taxation, then our cash availablefor distribution to our unitholders would be substantially reduced.The anticipated after-tax economic benefit of an investment in our common units depends largely on our being treated as a partnership for federalincome tax purposes.Despite the fact that we are a limited partnership under Delaware law, it is possible in certain circumstances for a partnership such as ours to betreated as a corporation for federal income tax purposes. A change in current law could cause us to be treated as a corporation for federal incometax purposes or otherwise subject us to taxation as an entity.If we were treated as a corporation for federal income tax purposes, we would pay federal income tax on our taxable income at the corporate taxrate, which is currently a maximum of 35%, and would likely pay state and local income tax at varying rates. Distributions would generally betaxed again as corporate dividends (to the extent of37Table of Contentsour current and accumulated earnings and profits), and no income, gains, losses, deductions, or credits would flow through to unitholders. Becausea tax would be imposed upon us as a corporation, our cash available for distribution would be substantially reduced. Therefore, if we were treatedas a corporation for federal income tax purposes, there would be material reduction in the anticipated cash flow and after-tax return to ourunitholders, likely causing a substantial reduction in the value of our common units.Our partnership agreement provides that, if a law is enacted or existing law is modified or interpreted in a manner that subjects us to taxation as acorporation or otherwise subjects us to entity-level taxation for federal, state or local income tax purposes, the minimum quarterly distributionamount and the target distribution amounts may be adjusted to reflect the impact of that law on us.If we were subjected to a material amount of additional entity-level taxation by individual states, it would reduce our cash available fordistribution to our unitholders.Changes in current state law may subject us to additional entity-level taxation by individual states. Because of widespread state budget deficitsand other reasons, several states are evaluating ways to subject partnerships to entity-level taxation through the imposition of state income,franchise and other forms of taxation. Imposition of any such taxes may substantially reduce the cash available for distribution. Our partnershipagreement provides that, if a law is enacted or existing law is modified or interpreted in a manner that subjects us to entity-level taxation, theminimum quarterly distribution amount and the target distribution amounts may be adjusted to reflect the impact of that law on us.The tax treatment of publicly traded partnerships or an investment in our common units could be subject to potential legislative, judicialor administrative changes and differing interpretations, possibly on a retroactive basis.The present federal income tax treatment of publicly traded partnerships, including us, or an investment in our common units may be modified byadministrative, legislative or judicial interpretation at any time. For example, from time to time members of the U.S. Congress propose andconsider substantive changes to the existing federal income tax laws that affect publicly traded partnerships. We are unable to predict whether anysuch changes will ultimately be enacted. However, it is possible that a change in law could affect us and may be applied retroactively. Any suchchanges could negatively impact the value of an investment in our common units.Our unitholders' share of our income will be taxable to them for federal income tax purposes even if they do not receive any cashdistributions from us.Because a unitholder will be treated as a partner to whom we will allocate taxable income that could be different in amount than the cash wedistribute, a unitholder's allocable share of our taxable income will be taxable to it, which may require the payment of federal income taxes and, insome cases, state and local income taxes, on its share of our taxable income even if the unitholder receives no cash distributions from us. Ourunitholders may not receive cash distributions from us equal to their share of our taxable income or even equal to the actual tax liability thatresults from that income.If the IRS contests the federal income tax positions we take, the market for our common units may be adversely impacted and the cost ofany IRS contest will reduce our cash available for distribution to our unitholders.We have not requested a ruling from the IRS with respect to our treatment as a partnership for federal income tax purposes. The IRS may adoptpositions that differ from the positions we take, and the IRS's positions may ultimately be sustained. It may be necessary to resort toadministrative or court proceedings to sustain some or all of the positions we take and such positions may not ultimately be sustained. Anycontest with the IRS, and the outcome of any IRS contest, may have an adverse impact on the market for our common units and the price atwhich they trade. In addition, our costs of any contest with the IRS will be borne indirectly by our unitholders and our general partner because thecosts will reduce our cash available for distribution.Tax gain or loss on the disposition of our common units could be more or less than expected.If a unitholder sells its common units, a gain or loss will be recognized for federal income tax purposes equal to the difference between the amountrealized and the unitholder's tax basis in those common units. Because distributions in excess of a unitholder's allocable share of its net taxableincome decrease its tax basis in its common units, the amount, if any, of such prior excess distributions with respect to the common units the itsells will, in effect, become taxable income to the unitholder if it sells such common units at a price greater than the its tax basis in those commonunits, even if the price it receives is less than its original cost. Furthermore, a substantial portion of the amount realized on any sale of aunitholder's common units, whether or not representing gain, may be taxed as38Table of Contentsordinary income due to potential recapture items, including depreciation recapture. In addition, because the amount realized includes a unitholder'sshare of our nonrecourse liabilities, if a unitholder sells its common units, it may incur a tax liability in excess of the amount of cash it receivesfrom the sale.Tax-exempt entities and non-U.S. persons face unique tax issues from owning our common units that may result in adverse taxconsequences to them.Investment in common units by tax-exempt entities, such as employee benefit plans and individual retirement accounts ("IRAs"), and non-U.S.persons raises issues unique to them. For example, virtually all of our income allocated to organizations that are exempt from federal income tax,including IRAs and other retirement plans, will be unrelated business taxable income and will be taxable to them. Distributions to non-U.S. personswill be reduced by withholding taxes at the highest applicable effective tax rate, and non-U.S. persons will be required to file federal income taxreturns and pay tax on their share of our taxable income. Tax-exempt entities and non-U.S. persons should consult a tax advisor before investingin our common units.We will treat each purchaser of common units as having the same tax benefits without regard to the actual common units purchased.The IRS may challenge this treatment, which could adversely affect the value of the common units.Because we cannot match transferors and transferees of common units and because of other reasons, we will adopt depreciation and amortizationpositions that may not conform to all aspects of existing Treasury Regulations. A successful IRS challenge to those positions could adverselyaffect the amount of tax benefits available to our unitholders. It also could affect the timing of these tax benefits or the amount of gain from ourunitholders' sale of common units and could have a negative impact on the value of our common units or result in audit adjustments to ourunitholders' tax returns.We prorate our items of income, gain, loss and deduction for federal income tax purposes between transferors and transferees of ourunits each month based upon the ownership of our units on the first day of each month, instead of on the basis of the date a particularunit is transferred. The IRS may challenge this treatment, which could change the allocation of items of income, gain, loss anddeduction among our unitholders.We will prorate our items of income, gain, loss and deduction for federal income tax purposes between transferors and transferees of our unitseach month based upon the ownership of our units on the first day of each month, instead of on the basis of the date a particular unit istransferred. The use of this proration method may not be permitted under existing Treasury regulations. Recently, however, the U.S. TreasuryDepartment issued proposed regulations that provide a safe harbor pursuant to which publicly traded partnerships may use a similar monthlysimplifying convention to allocate tax items among transferor and transferee unitholders. Nonetheless, the proposed regulations do not specificallyauthorize the use of the proration method we have adopted. If the IRS were to challenge this method or new Treasury regulations were issued, wemay be required to change the allocation of items of income, gain, loss and deduction among our unitholders.A unitholder whose common units are loaned to a short seller to effect a short sale of common units may be considered as havingdisposed of those common units. If so, he would no longer be treated for federal income tax purposes as a partner with respect to thosecommon units during the period of the loan and may recognize gain or loss from the disposition.Because a unitholder whose common units are loaned to a short seller to effect a short sale of common units may be considered as havingdisposed of the loaned common units, he may no longer be treated for federal income tax purposes as a partner with respect to those commonunits during the period of the loan to the short seller and the unitholder may recognize gain or loss from such disposition. Moreover, during theperiod of the loan to the short seller, any of our income, gain, loss or deduction with respect to those common units may not be reportable by theunitholder and any cash distributions received by the unitholder as to those common units could be fully taxable as ordinary income. Unitholdersdesiring to assure their status as partners and avoid the risk of gain recognition from a loan to a short seller are advised to consult a tax advisor todiscuss whether it is advisable to modify any applicable brokerage account agreements to prohibit their brokers from loaning their common units.We adopted certain valuation methodologies and monthly conventions for federal income tax purposes that may result in a shift ofincome, gain, loss and deduction between our general partner and our unitholders. The IRS may challenge this treatment, which couldadversely affect the value of the common units.When we issue additional units or engage in certain other transactions, we will determine the fair market value of our assets and allocate anyunrealized gain or loss attributable to our assets to the capital accounts of our39Table of Contentsunitholders and our general partner. Our methodology may be viewed as understating the value of our assets. In that case, there may be a shift ofincome, gain, loss and deduction between certain unitholders and our general partner, which may be unfavorable to such unitholders. Moreover,under our valuation methods, subsequent purchasers of common units may have a greater portion of their Internal Revenue Code Section 743(b)adjustment allocated to our tangible assets and a lesser portion allocated to our intangible assets. The IRS may challenge our valuation methods,or our allocation of the Section 743(b) adjustment attributable to our tangible and intangible assets, and allocations of taxable income, gain, lossand deduction between our general partner and certain of our unitholders.A successful IRS challenge to these methods or allocations could adversely affect the amount of taxable income or loss being allocated to ourunitholders. It also could affect the amount of taxable gain from our unitholders' sale of common units and could have a negative impact on thevalue of the common units or result in audit adjustments to our unitholders' tax returns without the benefit of additional deductions.The sale or exchange of 50% or more of our capital and profits interests during any twelve-month period will result in the termination ofour partnership for federal income tax purposes.We will be considered to have technically terminated our partnership for federal income tax purposes if there is a sale or exchange of 50% or moreof the total interests in our capital and profits within a twelve-month period. For purposes of determining whether the 50% threshold has been met,multiple sales of the same interest will be counted only once. Our technical termination would, among other things, result in the closing of ourtaxable year for all unitholders, which would result in us filing two tax returns (and our unitholders could receive two Schedules K-1 if relief was notavailable, as described below) for one fiscal year and would result in a deferral of depreciation deductions allowable in computing our taxableincome. In the case of a unitholder reporting on a taxable year other than a fiscal year ending December 31, the closing of our taxable year mayalso result in more than twelve months of our taxable income or loss being includable in his taxable income for the year of termination. Ourtermination currently would not affect our classification as a partnership for federal income tax purposes, but instead we would be treated as a newpartnership for tax purposes. If treated as a new partnership, we must make new tax elections and could be subject to penalties if we are unable todetermine that a termination occurred. The IRS has announced a publicly traded partnership technical termination relief program whereby, if apublicly traded partnership that technically terminated requests publicly traded partnership technical termination relief and such relief is granted bythe IRS, among other things, the partnership will only have to provide one Schedule K-1 to unitholders for the year notwithstanding two partnershiptax years.As a result of investing in our common units, our unitholders may become subject to state and local taxes and return filing requirementsin jurisdictions where we operate or own or acquire properties.In addition to federal income taxes, our unitholders will likely be subject to other taxes, including state and local taxes, unincorporated businesstaxes and estate, inheritance or intangible taxes that are imposed by the various jurisdictions in which we conduct business or control propertynow or in the future, even if the unitholders do not live in any of those jurisdictions. Our unitholders will likely be required to file state and localincome tax returns and pay state and local income taxes in some or all of these various jurisdictions. Further, our unitholders may be subject topenalties for failure to comply with those requirements. Some of the states in which we conduct business currently impose a personal income taxon individuals. As we make acquisitions or expand our business, we may control assets or conduct business in additional states that impose apersonal income tax. It is the unitholder's responsibility to file all federal, state and local tax returns.Item 1B. Unresolved Staff Comments.Not applicable.Item 2. Properties.We currently have four natural gas gathering systems which provide gathering, treating and processing services. They are (i) the MountaineerMidstream system located in Doddridge and Harrison counties, West Virginia, (ii) the Bison Midstream system located in Mountrail and Burkecounties, North Dakota, (iii) the DFW Midstream system located primarily in Tarrant County, Texas and (iv) the Grand River system locatedprimarily in Garfield, Mesa and Rio Blanco counties, Colorado and Uintah and Grand counties, Utah. For additional information on our gatheringsystems and their capacities, see Item 1. Business.40Table of ContentsOur real property falls into two categories: (i) parcels that we own in fee and (ii) parcels in which our interest derives from leases, easements,rights-of-way, permits or licenses from landowners or governmental authorities, permitting the use of such land for our operations. Portions of theland on which our gathering systems and other major facilities are located are owned by us in fee title, and we believe that we have valid title tothese lands. The remainder of the land on which our major facilities are located are held by us pursuant to long-term leases or easements betweenus and the underlying fee owner, or permits with governmental authorities. Our Predecessor leased or owned these lands without any materialchallenge known to us relating to the title to the land upon which our assets are located, and we believe that we have valid leasehold estates or feeownership in such lands or valid permits with governmental authorities. We have no knowledge of any material challenge to the underlying fee titleof any material lease, easement, right-of-way, permit or license held by us or to our title to any material lease, easement, right-of-way, permit orlicense. We believe that we have satisfactory title to all of our material leases, easements, rights-of-way, permits and licenses with the exceptionof certain ordinary course encumbrances and permits with governmental entities that have been applied for, but not yet issued.In addition, we lease various office space under operating leases to support our operations. Our headquarters are located in The Woodlands,Texas, and we have additional regional corporate offices in Denver, Colorado and Atlanta, Georgia.Item 3. Legal Proceedings.Although we may, from time to time, be involved in litigation and claims arising out of our operations in the normal course of business, we are notcurrently a party to any significant legal or governmental proceedings. In addition, we are not aware of any significant legal or governmentalproceedings contemplated to be brought against us, under the various environmental protection statutes to which we are subject, except as notedbelow.In January 2015, the U.S. Department of Justice issued a grand jury subpoena to Summit Investments, the Partnership and our general partnerrequesting certain materials related to an incident involving a produced water disposal pipeline owned by Meadowlark Midstream Company, LLC(“Meadowlark”) that resulted in a discharge of materials into the environment. Meadowlark is an indirect, wholly owned subsidiary of SummitInvestments. The Partnership and our general partner do not currently have, nor have they ever had, any management or operational control over,or ownership interest in, Meadowlark or the pipeline. As a result, while we cannot predict the ultimate outcome of this matter with certainty, webelieve at this time that it is not likely that the Partnership or our general partner will be subject to any material liability as a result of anygovernmental proceeding related to the incident.Item 4. Mine Safety Disclosures.Not applicable.41Table of ContentsPART IIItem 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of EquitySecurities.Our limited partner common units trade on the New York Stock Exchange. Our ticker symbol is "SMLP." As of February 17, 2015, there wereapproximately 9,250 common unitholders, including beneficial owners of common units held in street name. There is one record holder of oursubordinated units. There is no established public trading market for our subordinated units.The following table shows the high and low price per common unit, as reported by the New York Stock Exchange for the periods indicated. Common unit price range Cash distributionpaid per commonunit High Low 4th Quarter 2014$51.44 $32.30 $0.543rd Quarter 2014$56.49 $46.50 $0.522nd Quarter 2014$51.25 $40.53 $0.501st Quarter 2014$43.98 $34.72 $0.48 4th Quarter 2013$38.20 $30.66 $0.463rd Quarter 2013$35.40 $31.62 $0.4352nd Quarter 2013$35.40 $26.04 $0.421st Quarter 2013$28.50 $18.67 $0.41On January 22, 2015, the board of directors of our general partner declared a distribution of $0.56 per unit for the quarterly period ended December31, 2014. The distribution, which totaled approximately $35.1 million, was paid on February 13, 2015 to unitholders of record at the close ofbusiness on February 6, 2015.Our Cash Distribution Policy and Restrictions on DistributionsGeneralOur Cash Distribution Policy. Our partnership agreement requires us to distribute all of our available cash quarterly. Our policy is to distribute toour unitholders an amount of cash each quarter that is equal to or greater than the minimum quarterly distribution stated in our partnershipagreement. Generally, our available cash is our (i) cash on hand at the end of a quarter after the payment of our expenses and the establishmentof cash reserves and (ii) cash on hand resulting from working capital borrowings made after the end of the quarter. Because we are not subject toan entity-level federal income tax, we have more cash to distribute to our unitholders than would be the case were we subject to federal incometax. For additional information, see Note 8 to the audited consolidated financial statements.Limitations on Cash Distributions and Our Ability to Change Our Cash Distribution Policy. There is no guarantee that our unitholders willreceive quarterly distributions from us. We do not have a legal obligation to pay the minimum quarterly distribution or any other distribution exceptto the extent we have available cash as defined in our partnership agreement. Our cash distribution policy may be changed at any time and issubject to certain restrictions, including the following:•Our cash distribution policy is subject to restrictions on distributions under our amended and restated revolving credit facility. Ouramended and restated revolving credit facility contains financial tests and covenants that we must satisfy. Should we be unable to satisfythese restrictions, we may be prohibited from making cash distributions notwithstanding our stated cash distribution policy.•Our general partner has the authority to establish cash reserves for the prudent conduct of our business and for future cash distributions toour unitholders, and the establishment or increase of those cash reserves could result in a reduction in cash distributions to you from thelevels we currently anticipate pursuant to our stated distribution policy. Any determination to establish cash reserves made by our generalpartner in good faith will be binding on our unitholders.42Table of Contents•Although our partnership agreement requires us to distribute all of our available cash, our partnership agreement, including the provisionsrequiring us to distribute all of our available cash, may be amended. Our partnership agreement generally may not be amended during thesubordination period without the approval of our public common unitholders other than in certain limited circumstances where no unitholderapproval is required. However, our partnership agreement can be amended with the consent of our general partner and the approval of amajority of the outstanding common units (including common units held directly and indirectly by Summit Investments) after thesubordination period has ended. As of December 31, 2014, a subsidiary of Summit Investments owned our general partner as well as5,293,571 common units and all of our 24,409,850 subordinated units.•Even if our cash distribution policy is not modified or revoked, the amount of distributions we pay under our cash distribution policy andthe decision to make any distribution is determined by our general partner, taking into consideration the terms of our partnershipagreement.•Under Delaware law, we may not make a distribution if the distribution would cause our liabilities to exceed the fair value of our assets.•We may lack sufficient cash to pay distributions to our unitholders due to cash flow shortfalls attributable to a number of operational,commercial or other factors as well as increases in our operating or general and administrative expenses, principal and interest paymentson our debt, tax expenses, working capital requirements and anticipated cash needs. Our cash available for distribution to unitholders isdirectly impacted by our cash expenses necessary to run our business and will be reduced dollar-for-dollar to the extent such uses of cashincrease.•If and to the extent our cash available for distribution materially declines, we may elect to reduce our quarterly distribution rate to serviceor repay our debt or fund expansion capital expenditures.Our Minimum Quarterly DistributionOur partnership agreement has established an MQD of $0.40 per unit per quarter, or $1.60 per unit per year, to be paid no later than 45 days afterthe end of each fiscal quarter. We will pay our distributions on or about the 15th of each of February, May, August and November to holders ofrecord on or about seven days prior to such distribution date. We will make the distribution on the business day immediately preceding theindicated distribution date if the distribution date falls on a holiday or non-business day.Our general partner is entitled to 2.0% of all distributions that we make prior to our liquidation. In the future, our general partner's initial 2.0%interest in these distributions may be reduced if we issue additional units and our general partner does not contribute a proportionate amount ofcapital to us to maintain its 2.0% general partner interest.The following table sets forth the aggregate quarterly and annual MQD (including distribution equivalent rights) based on all of the units outstandingas of December 31, 2014 (including unvested awards under the 2012 SMLP Long Term Incentive Plan, or "SMLP LTIP"). Minimum Quarterly Distribution Number of units Per quarter Annualized (Dollars in thousands)Publicly held common units29,132,942 $11,653 $46,613Common units held by a subsidiary of Summit Investments5,293,571 2,117 8,470Subordinated units held by a subsidiary of Summit Investments24,409,850 9,764 39,0562.0% general partner interest1,200,651 480 1,921Total units outstanding60,037,014 24,014 96,060SMLP LTIP participant phantom units(1)336,202 134 538Total outstanding and unvested units60,373,216 $24,148 $96,598__________(1) Represents distribution equivalent rights on awards of phantom units not yet vested.For additional information, see Note 8 to the audited consolidated financial statements.43Table of ContentsStock Performance TableThe following graph compares the cumulative total unitholder return on our common units since the IPO to the cumulative total return of the S&P500 Stock Index and the Alerian MLP Index ("AMZX") by assuming $100 was invested in each investment option as of September 28, 2012, thedate of the IPO. The Alerian MLP Index is a composite of the 50 most prominent energy Master Limited Partnerships, or MLPs, and is calculatedusing a float-adjusted, capitalization-weighted methodology.Issuer Purchases of Equity SecuritiesWe made no repurchases of our common units during the quarter ended December 31, 2014.Equity Compensation PlansThe information relating to SMLP’s equity compensation plans required by Item 5 is included in Item 12. Security Ownership of Certain BeneficialOwners and Management and Related Stockholder Matters.Item 6. Selected Financial Data.The selected consolidated financial data presented as of December 31, 2014, 2013, 2012, 2011, and 2010 and for the years ended December 31,2014, 2013, 2012, 2011, and 2010 have been derived from the audited consolidated financial statements of SMLP and its Predecessor.SMLP completed its IPO on October 3, 2012. For the year ended December 31, 2012, these financial statements include the Predecessor'sresults of operations through the date of SMLP's IPO.These financial statements reflect the results of operations of (i) Bison Midstream since February 16, 2013, (ii) Mountaineer Midstream since June22, 2013, (iii) Red Rock Gathering since October 23, 2012 and (iv) Grand River Gathering since October 27, 2011. SMLP recognized itsacquisitions of Bison Midstream (the "Bison Drop Down") and Red Rock Gathering (the "Red Rock Drop Down") at Summit Investments' historicalcost because the acquisitions were executed by entities under common control. The excess of Summit Investments' net investment in BisonMidstream over the purchase price paid by SMLP was recognized as an addition to partners' capital. The excess of the purchase price paid bySMLP over Summit Investments' net investment in Red Rock Gathering was recognized as a reduction to partners' capital. Due to the commoncontrol aspect, the Bison Drop Down and the Red Rock Drop Down were accounted for by the Partnership on an “as-if pooled” basis for the periodsduring which common control existed.44Table of ContentsDue to the various asset acquisitions and the associated shift in business strategies relative to those of our Predecessor, SMLP's financialposition and results of operations may not be comparable to the historical financial position and results of operations of the Predecessor.The following table presents selected balance sheet and other data as of the date indicated. December 31, 2014 2013 2012 2011 2010 (In thousands, except per-unit amounts)Balance sheet data: Total assets$1,894,874 $1,883,739 $1,280,939 $1,030,264 $340,095Total long-term debt808,000 586,000 199,230 349,893 —Partners' capital966,889 1,201,737 1,030,248 n/a n/aMembership interestsn/a n/a n/a 640,818 307,370 Other data: Market price per common unit$38.00 $36.65 $19.83 n/a n/a__________n/a - Not applicableThe following table presents selected statement of operations data by entity for the periods indicated. Year ended December 31, 2014 2013 2012 2011 2010 (In thousands, except per-unit amounts)Statement of operations data: Total revenues$330,686 $292,920 $174,423 $103,552 $31,676Total costs and expenses312,249 219,719 117,987 61,864 23,412Interest expense40,159 19,173 7,340 1,029 —Affiliated interest expense— — 5,426 2,025 —Net (loss) income(21,164) 53,304 42,997 37,951 8,172 Earnings per limited partner unit: Common unit – basic$(0.49) $0.86 $0.35 n/a n/aCommon unit – diluted(0.49) 0.86 0.35 n/a n/aSubordinated unit – basic and diluted(0.44) 0.79 0.35 n/a n/a Other financial data: EBITDA$103,556 $144,195 $93,302 $53,363 $12,353Adjusted EBITDA193,778 164,839 105,946 56,803 12,353Capital expenditures128,325 109,376 77,296 78,248 153,719Acquisition capital expenditures (1)315,872 458,914 — 589,462 —Distributable cash flow139,611 128,141 90,947 50,980 11,726Distributions declared per unit (2)2.120 1.795 0.410 n/a n/a__________n/a - Not applicable(1) Reflects cash paid and value of units issued, if any, to fund our acquisitions of the Red Rock Gathering system in 2014 and the Bison Midstream andMountaineer Midstream systems in 2013, and our Predecessor's acquisition of the Grand River Gathering system in 2011.45Table of Contents(2) Represents distributions declared in respect of a given quarterly period. For example, in 2014, represents the distributions declared in April 2014 for thefirst quarter of 2014, July 2014 for the second quarter of 2014, October 2014 for the third quarter of 2014 and January 2015 for the fourth quarter of 2014.For a detailed discussion of the data presented above, including information regarding our use of EBITDA, adjusted EBITDA and distributable cashflow as well as their reconciliations to net income and net cash flows provided by operating activities, see Item 7. Management's Discussion andAnalysis of Financial Condition and Results of Operations. The preceding tables should also be read in conjunction with the audited consolidatedfinancial statements and related notes.Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.This MD&A is intended to inform the reader about matters affecting the financial condition and results of operations of SMLP and its subsidiaries.As a result, the following discussion should be read in conjunction with the audited consolidated financial statements and notes thereto included inthis report. Among other things, those financial statements and the related notes include more detailed information regarding the basis ofpresentation for the following information. This discussion contains forward-looking statements that constitute our plans, estimates and beliefs.These forward-looking statements involve numerous risks and uncertainties, including, but not limited to, those discussed in Forward-LookingStatements on page ii of this Annual Report on Form 10-K. Actual results may differ materially from those contained in any forward-lookingstatements.Item 7. MD&A is divided into the following sections:•Overview•Trends and Outlook•How We Evaluate Our Operations•Results of Operations•Non-GAAP Financial Measures•Liquidity and Capital Resources•Critical Accounting EstimatesOverviewWe are a growth-oriented limited partnership focused on developing, owning and operating midstream energy infrastructure assets that arestrategically located in the core producing areas of unconventional resource basins, primarily shale formations, in North America. We gather, treatand process natural gas from both dry gas and liquids-rich regions. Dry gas regions contain natural gas reserves that are primarily composed ofmethane. Liquids-rich regions include natural gas reserves that contain natural gas liquids, or NGLs, in addition to methane.We currently operate natural gas gathering systems in four unconventional resource basins:•the Appalachian Basin, which includes the Marcellus Shale formation in northern West Virginia;•the Williston Basin, which includes the Bakken and Three Forks shale formations in northwestern North Dakota;•the Fort Worth Basin, which includes the Barnett Shale formation in north-central Texas; and•the Piceance Basin, which includes the Mesaverde formation and the Mancos and Niobrara shale formations in western Colorado andeastern Utah.We believe that our gathering systems are well positioned to capture volumes from producer activity in these regions in the future.Our results are driven primarily by the volumes of natural gas that we gather, treat and process across our systems. We contract with producers togather natural gas from pad sites and central receipt points connected to our systems, which we then compress, dehydrate, and/or treat fordelivery to downstream pipelines for ultimate delivery to our or third-party processing plants and/or end users.46Table of ContentsWe generate the majority of our revenue from the natural gas gathering, treating and processing services that we provide to our natural gasproducer customers under primarily long-term and fee-based natural gas gathering and processing agreements. Under these agreements, we arepaid a fixed fee based on the volume of the natural gas we gather, treat and/or process. These agreements enhance the stability of our cash flowsby providing a revenue stream that is not subject to direct commodity price risk. We also earn revenue from our marketing of natural gas andnatural gas liquids and from the sale of physical natural gas purchased from our customers under percentage-of-proceeds and keep-wholearrangements, which can expose us to commodity price risk. We sell condensate retained from our gathering services at Grand River Gathering.We have indirect exposure to changes in commodity prices in that persistent low commodity prices may cause our customers to delay drilling ortemporarily shut in production, which would reduce the volumes of natural gas that we gather. If our customers delay drilling or temporarily shut-inproduction, our MVCs ensure that we will receive a certain amount of revenue from our customers.Most of our gas gathering agreements are underpinned by AMIs and MVCs. Our AMIs cover over 1.4 million acres in the aggregate and providethat any natural gas produced from wells drilled by our customers within the AMI will be shipped on our gathering systems. Our MVCs, whichtotaled 3.8 Tcf at December 31, 2014 and average approximately 1,248 MMcf/d through 2018, are designed to ensure that we will generate acertain amount of revenue from each customer over the life of the respective gas gathering agreement, whether by collecting gathering fees onactual throughput or from cash payments to cover any minimum volume commitment shortfall. Our MVCs had a weighted-average remaining life of9.7 years as of December 31, 2014, assuming minimum throughput volumes for the remainder of the term.For additional information on our gathering systems, see Item 1. Business and "Results of Operations—Combined Overview" below.Trends and OutlookOur business has been, and we expect our future business to continue to be, affected by the following key trends:•Acquisitions from Summit Investments and third parties;•Natural gas, NGL and crude oil supply and demand dynamics;•Growth in production from U.S. shale plays;•Capital markets activity and cost of capital; and•Shifts in operating costs and inflation.Our expectations are based on assumptions made by us and information currently available to us. To the extent our underlying assumptionsabout, or interpretations of, available information prove to be incorrect, our actual results may vary materially from our expected results.Acquisitions from Summit Investments and third parties. Our principal business strategy is to increase the amount of cash distributions wemake to our unitholders over time. Our ability to grow cash distributions depends, in part, on our ability to make acquisitions that increase theamount of cash generated from our operations on a per-unit basis, along with other factors. We pursue accretive acquisitions of midstream assetsfrom Summit Investments and third parties. For example, in 2013, we acquired Bison Midstream from a subsidiary of Summit Investments andMountaineer Midstream from an affiliate of MarkWest, and, in 2014, we acquired Red Rock Gathering from a subsidiary of Summit Investments.Summit Investments currently owns and operates, and continuously seeks to acquire and develop, crude oil, natural gas and water-relatedmidstream assets that are both in service and under construction in geographic areas in which we currently operate, as well as in geographic areasoutside of our current areas of operations. Summit Investments has invested and expects to continue to invest an aggregate of more than $2.3billion over the next several years to further develop its portfolio of crude oil, natural gas, and water-related midstream energy infrastructure assetsin the Bakken Shale in North Dakota, the DJ Niobrara Shale in Colorado and the Utica Shale in southeastern Ohio.The acquisition component of our principal business strategy, including future acquisitions from Summit Investments, has required and willcontinue to require significant expenditures by us and access to external sources of financing from the debt and equity capital markets.Furthermore, as our Sponsor and its affiliates are under no obligation to provide any direct or indirect financial assistance to us, we rely primarilyon external financing sources,47Table of Contentsincluding commercial bank borrowings and the issuance of debt and equity securities, to fund our acquisitions and expansion capital expenditures.Any prospective transaction would be impacted by our ability to obtain financing on acceptable terms from the capital markets or other sources,among other factors.Given the size of Summit Investments’ midstream asset portfolio and the expected additional investment that it intends to make to sufficientlydevelop those midstream assets, we expect to have the opportunity to make significant additional acquisitions from Summit Investments. Basedon current expectations, we are estimating drop down transactions from Summit Investments or its subsidiaries in the range of $400.0 million to$800.0 million, annually through 2017. However, Summit Investments or its subsidiaries have no obligation to offer any assets to us in the futureand we have no obligation to acquire any assets that are offered to us. Moreover, there are a number of risks and uncertainties that could causeour current expectations and projections to change, including, but not limited to, (i) Summit Investments deciding, in its sole discretion, to offer usthe right to acquire the assets; (ii) the ability to reach agreement on acceptable terms; (iii) the approval of the conflicts committee of our generalpartner's board of directors (if appropriate); (iv) prevailing conditions and outlook in the crude oil, natural gas and natural gas liquids industries andmarkets; and (v) our ability to obtain financing on acceptable terms from the capital markets or other sources. For a more extensive list of theserisks and uncertainties, see “Risks Related to Our Business—We intend to grow our business in part by seeking strategic acquisitionopportunities. If we are unable to make acquisitions on economically acceptable terms from Summit Investments, its affiliates or third parties, ourfuture growth will be affected, and the acquisitions we do make may reduce, rather than increase, our cash generated from operations.” in Item 1A.Risk Factors.We also continue to actively pursue third-party acquisitions. However, their size, timing and/or contribution to our results of operations cannot bereasonably estimated.We expect to fund potential drop downs and acquisitions with equity offerings and borrowings under our revolving credit facility, initially. Longer-term financing is expected to be provided by the issuance of additional debt and equity securities. In each of 2014 and 2013, we accessed thebond markets for $300.0 million to fund portions of our acquisitions and to pay down a portion of our revolving credit facility. We also issued equitysecurities in 2014 to fund a portion of the Red Rock Drop Down and in 2013, we issued equity securities to a subsidiary of Summit Investments tofund portions of the Bison Drop Down and the Mountaineer Midstream acquisition. See the "Liquidity and Capital Resources—CapitalRequirements" section herein and Notes 7 and 8 to the audited consolidated financial statements for additional information.Natural gas, NGL and crude oil supply and demand dynamics. Natural gas continues to be a critical component of energy supply and demandin the United States. Recently, the price of natural gas has decreased, with the New York Mercantile Exchange, or NYMEX, natural gas futuresprice at $2.89 per MMBtu as of December 31, 2014 compared with $4.23 per MMBtu as of December 31, 2013. Lower prices in 2014 relative to2013 are primarily attributable to a milder-than-expected winter, which resulted in lower-than-normal overall consumption of natural gas. As a result,the amount of natural gas in storage in the continental United States increased to approximately 3.2 Tcf as of December 26, 2014 fromapproximately 3.0 Tcf as of December 27, 2013, compared with a ten-year historical December average of 3.3 Tcf.Current natural gas prices continue to be lower than historical prices due in part to increased production, especially from unconventional sources,such as natural gas shale plays. According to the U.S. Energy Information Administration (the "EIA"), average annual natural gas production in theUnited States increased to 66.7 Bcf/d, or 21.1%, in 2013 from 55.1 Bcf/d in 2008. Over the same time period, natural gas consumption increasedonly 12.3% to 71.6 Bcf/d. In response to lower natural gas prices, the number of natural gas drilling rigs has declined from approximately 1,350 inDecember 2008 to approximately 340 in December 2014, according to Baker Hughes. We believe that over the near term, until the supply ofnatural gas has been reduced or the broader economy experiences more robust growth, natural gas prices are likely to be constrained.Over the long term, we believe that the prospects for continued natural gas demand are favorable and will be driven by population and economicgrowth, as well as the continued displacement of coal-fired electricity generation by natural gas-fired electricity generation. For example, accordingto the EIA, coal-fired power plants generated 39% of the electricity in the United States in 2013, compared with 48% in 2008. In April 2014, theEIA projected total annual domestic consumption of natural gas to increase from approximately 70.0 Bcf/d in 2012 to approximately 86.4 Bcf/d in2040. Consistent with the rise in consumption, the EIA projects that total domestic natural gas production will continue to grow through 2040 to102.8 Bcf/d. The EIA also projects the United States to be a net exporter of liquefied natural gas, or LNG, by 2018, with net U.S. exports of LNGprojected to rise to 15.8 Bcf/d in 2040 from a 2013 net imported amount of 4.1 Bcf/d. We believe that increasing consumption of natural gas willcontinue to drive natural gas drilling and production over the long term throughout the United States.48Table of ContentsIn addition, the Bison Midstream system is directly affected by crude oil supply and demand dynamics. Crude oil has been the focus of a recentglobal supply surplus, with OPEC stating in November 2014 that it would not decrease production levels, despite estimates of slowing globaldemand, particularly in historically high growth countries such as China. This, in conjunction with continued crude oil production growth in theUnited States, has played a significant role in the recent decline in crude oil prices, with NYMEX crude oil futures ending 2014 at $53.27 per barrel,compared to a high in June 2014 of $107.26 per barrel. For additional information, see the "Critical Accounting Estimates—Recognition andImpairment of Long-Lived Assets" section herein and Notes 4 and 5 to the audited consolidated financial statements.Over the next two years, the EIA projects that domestic crude oil production will continue to increase from an average of 8.6 million Bbl/d in 2014to 9.5 million Bbl/d in 2016. While long-term estimates vary due to uncertainty regarding long-term crude oil price trends, the EIA still seescontinued growth in certain unconventional shale plays, with crude oil prices expected to remain high enough to support continued drilling andincreasing production in the Bakken Shale, Eagle Ford Shale, Permian Basin, and Niobrara Shale.In addition to the influence that crude oil market dynamics have on our Bison Midstream system, they produce a secondary effect on the naturalgas market as a whole. According to the EIA, of the 82.2 Bcf/d of natural gas that was produced in 2013, 14.9 Bcf/d, or 18%, was related toassociated natural gas produced from crude oil wells. Effectively, a decrease in production from these types of wells could play a part inincreasing natural gas prices.Growth in production from U.S. shale plays. Over the past several years, a fundamental shift in production has emerged with the growth ofnatural gas production from unconventional resources. While the EIA expects total domestic natural gas production to grow from 24.1 Tcf in 2013to 37.6 Tcf in 2040, it expects shale gas production to grow to 19.8 Tcf in 2040, representing 53% of total U.S. natural gas production. Most of thisincrease is due to the emergence of unconventional natural gas plays and advances in technology that have allowed producers to extractsignificant volumes of natural gas from these plays at cost-advantaged per-unit economics when compared to most conventional plays.In recent years, producers have leased large acreage positions in the areas in which we operate and other unconventional resource plays. To helpfund their drilling programs in many of these areas, a number of producers have entered into joint venture arrangements with large internationaloperators, industrial manufacturers and private equity sponsors. These producers and their joint venture partners have committed significantcapital to the development of the Piceance Basin and the Barnett, Bakken and Marcellus shale plays and other unconventional resource plays,which we believe will support sustained drilling activity.As a result of the current low commodity price environment, many producers have announced reductions to their capital expenditure budgets bylimiting their drilling activities in lower performing resource plays or in lower tier areas within higher performing resource plays. Nevertheless, webelieve producers will remain focused on deploying capital in their highest quality resource plays, even in a low commodity price environment.Capital markets activity and cost of capital. The credit markets have continued to experience near-record lows in interest rates. As oil pricesbegin to stabilize and the overall economy strengthens, it is likely that monetary policy will tighten, resulting in higher interest rates to counterpossible inflation. This could affect our ability to access the debt capital markets to the extent necessary to fund our future growth. In addition,interest rates on future credit facilities and debt offerings could be higher than current levels, causing our financing costs to increase accordingly.Although this could limit our ability to raise debt capital on acceptable terms, we expect to remain competitive with respect to acquisitions andcapital projects, as our competitors would face similar circumstances.Shifts in operating costs and inflation. During most of 2014, high levels of crude oil and natural gas exploration, development and productionactivities across the United States resulted in increased competition for personnel and equipment as well as higher prices for labor, supplies andequipment. An increase in the general level of goods and services in the broader economy could have a similar effect. In a highly competitivescenario, we attempt to recover increased costs from our customers, but there may be a delay in doing so or we may be unable to recover all ofthese costs. To the extent we are unable to procure necessary supplies or recover higher costs, our operating results will be negatively impacted.How We Evaluate Our OperationsWe conduct our operations in the midstream sector through four reportable segments:•the Marcellus Shale, which is served by Mountaineer Midstream;49Table of Contents•the Williston Basin, which is served by Bison Midstream;•the Barnett Shale, which is served by DFW Midstream; and•the Piceance Basin, which is served by Grand River. Grand River is composed of the Legacy Grand River and Red Rock gatheringsystems.Our management uses a variety of financial and operational metrics to analyze our consolidated and segment performance. We view these metricsas important factors in evaluating our profitability and review these measurements on a regular basis for consistency and trend analysis. Thesemetrics include:•throughput volume,•revenues,•operation and maintenance expenses,•EBITDA,•adjusted EBITDA and segment adjusted EBITDA, and•distributable cash flow.Throughput VolumeThe volume of natural gas that we gather, treat and process depends on the level of production from natural gas or crude oil wells connected to ourgathering systems. Aggregate production volumes are impacted by the overall amount of drilling and completion activity. Furthermore, because theproduction rate of natural gas and crude oil wells decline over time, production can only be maintained or increased by new drilling or other activity.As a result, we must continually obtain new supplies of natural gas to maintain or increase the throughput volume on our systems. Our ability tomaintain or increase throughput volumes from existing customers and obtain new supplies of natural gas is impacted by:•successful drilling activity within our areas of mutual interest;•the level of work-overs and recompletions of wells on existing pad sites to which our gathering systems are connected;•the number of new pad sites in our areas of mutual interest awaiting connections;•our ability to compete for volumes from successful new wells in the areas in which we operate outside of our existing areas of mutualinterest; and•our ability to gather, treat and process natural gas that has been released from commitments with our competitors.RevenuesOur revenues are primarily attributable to the volume of natural gas that we gather, treat and process and the rates we charge for those services. Asubstantial majority of our gathering and processing agreements are fee-based, which limits our direct commodity price exposure. We also havepercent-of-proceeds and keep-whole arrangements under which the gathering and processing revenues that we earn correlate directly with thefluctuating price of natural gas, condensate and NGLs.Many of our natural gas gathering and processing agreements contain MVCs pursuant to which our customers agree to ship or process a minimumvolume of natural gas on our gathering systems, or, in some cases, to pay a minimum monetary amount, over certain periods during the term ofthe MVC. These MVCs support our revenues and serve to mitigate the financial impact associated with declining volumes.Operation and Maintenance ExpensesWe seek to maximize the profitability of our operations in part by minimizing, to the extent appropriate, expenses directly tied to operating ourassets. Direct labor costs, compression costs, ad valorem taxes, repair and non-capitalized maintenance costs, integrity management costs,utilities and contract services comprise the most significant portion of our operation and maintenance expense. Other than utilities expense, theseexpenses are largely independent of volumes delivered through our gathering systems but may fluctuate depending on the activities performedduring a specific period.50Table of ContentsThe majority of the compressors on our DFW Midstream system are electric driven and power costs are directly correlated to the run-time of thesecompressors, which depends directly on the volume of natural gas gathered. As part of our contracts with our DFW Midstream system customers,we physically retain a percentage of throughput volumes that we subsequently sell to offset the power costs we incur. With respect to theMountaineer Midstream, Bison Midstream and Grand River systems, we either (i) consume physical gas on the system to operate our gas-firedcompressors or (ii) charge our customers for the power costs we incur to operate our electric-drive compressors.EBITDA, Adjusted EBITDA and Distributable Cash FlowEBITDA, adjusted EBITDA and distributable cash flow are used as supplemental financial measures by our management and by external users ofour financial statements such as investors, commercial banks, research analysts and others.EBITDA and adjusted EBITDA are used to assess:•the financial performance of our assets without regard to financing methods, capital structure or historical cost basis;•the ability of our assets to generate cash sufficient to support our indebtedness and make cash distributions to our unitholders and generalpartner;•our operating performance and return on capital as compared to those of other companies in the midstream energy sector, without regardto financing or capital structure; and•the attractiveness of capital projects and acquisitions and the overall rates of return on alternative investment opportunities.In addition, adjusted EBITDA is used to assess:•the financial performance of our assets without regard to the impact of the timing of minimum volume commitments shortfall paymentsunder our gas gathering agreements or the timing of impairments or other noncash income or expense items.Distributable cash flow is used to assess:•the ability of our assets to generate cash sufficient to support our indebtedness and make future cash distributions to our unitholders; and•the attractiveness of capital projects and acquisitions and the overall rates of return on alternative investment opportunities.For additional information, see the "Results of Operations" and "Non-GAAP Financial Measures" sections herein and Note 3 to the auditedconsolidated financial statements.Results of OperationsOur financial results are recognized as follows:Gathering services and other fees. Revenue earned from the natural gas gathering, treating and processing services that we provide to ournatural gas and crude oil producer customers.Natural gas, NGLs and condensate sales and other. Revenue earned from (i) the sale of physical natural gas and natural gas liquids purchasedfrom our customers under percentage-of-proceeds and keep-whole arrangements with certain of our customers on the Bison Midstream and RedRock gathering systems, (ii) the sale of natural gas we retain from our DFW Midstream customers and (iii) the sale of condensate we retain fromour gathering services at Grand River.Amortization of favorable and unfavorable contracts. The amortization of favorable and unfavorable contracts relates to gas gatheringagreements that were deemed to be above or below market at the acquisition of the DFW Midstream system. We amortize these contracts on aunits-of-production basis over the life of the applicable contract.Cost of natural gas and NGLs. The cost of natural gas and NGLs represents the costs associated with the percent-of-proceeds and keep-wholearrangements under which we sell natural gas purchased from certain of our customers on the Bison Midstream and Red Rock gathering systems.51Table of ContentsOperation and maintenance. Operation and maintenance primarily comprises direct labor costs, compression costs, ad valorem taxes, repair andnon-capitalized maintenance costs, integrity management costs, utilities and contract services. These items represent the most significant portionof our operation and maintenance expense. Other than utilities expense, these expenses are largely independent of variations in throughputvolumes but may fluctuate depending on the activities performed during a specific period. Operation and maintenance also includes ourprocurement of electricity to operate our electric-drive compression assets on the DFW Midstream system.General and administrative. Expenses associated with our operations that are not specifically associated with the operation and maintenance ofa particular system or another cost and expense line item. These expenses largely reflect salaries, benefits and incentive compensation,professional fees, insurance and rent.Transaction costs. Financial and legal advisory costs associated with completed acquisitions.Depreciation and amortization. The amortization of our contract and right-of-way intangible assets and the depreciation of our property, plant andequipment.Other income or expense. Generally represents interest income but may also include other items of gain or loss.Interest expense. Interest expense associated with our revolving credit facility and senior notes.Affiliated interest expense. Interest cost related to the $200.0 million promissory notes that we issued to affiliates in connection with theacquisition of the Grand River system in 2011. The promissory notes were repaid in 2012.Income tax expense. Since we are structured as a partnership, we are generally not subject to federal and state income taxes, except the TexasMargin Tax, which is reflected herein.Items Affecting the Comparability of Our Financial ResultsSMLP's historical results of operations may not be comparable to its future results of operations for the reasons described below:•The audited consolidated financial statements reflect the results of operations of Red Rock Gathering since October 23, 2012. Weaccounted for the Red Rock Drop Down on an "as-if pooled" basis because the transaction was executed by entities under commoncontrol. Red Rock Gathering's contribution to the Partnership's financial and operating results have been reflected in the financial andoperating results of its parent, Grand River.•The audited consolidated financial statements reflect the results of operations of Bison Midstream since February 16, 2013. We accountedfor the Bison Drop Down on an "as-if pooled" basis because the transaction was executed by entities under common control.•The audited consolidated financial statements reflect the results of operations of Mountaineer Midstream since June 22, 2013.For additional information, see the notes to the audited consolidated financial statements.52Table of ContentsThe following table presents certain consolidated and other financial and operating data as of or for the years ended December 31. Year ended December 31, Percentage Change 2014 2013 2012 2014 v. 2013 2013 v. 2012 (Dollars in thousands)Revenues: Gathering services and other fees$235,033 $205,346 $154,139 14 % 33%Natural gas, NGLs and condensate sales and other96,597 88,606 20,476 9 % *Amortization of favorable and unfavorable contracts(944) (1,032) (192) * *Total revenues330,686 292,920 174,423 13 % 68% Costs and expenses: Cost of natural gas and NGLs58,094 44,233 3,224 31 % *Operation and maintenance76,272 72,465 53,882 5 % 34%General and administrative34,017 30,105 22,182 13 % 36%Transaction costs730 2,841 2,025 (74)% 40%Depreciation and amortization82,990 69,962 36,674 19 % 91%Loss on asset sales, net442 113 — * *Goodwill impairment54,199 — — * —%Long-lived asset impairment5,505 — — * —%Total costs and expenses312,249 219,719 117,987 42 % 86%Other income1,189 5 9 * *Interest expense(40,159) (19,173) (7,340) 109 % *Affiliated interest expense— — (5,426) — % *(Loss) income before income taxes(20,533) 54,033 43,679 (138)% 24%Income tax expense(631) (729) (682) (13)% 7%Net (loss) income$(21,164) $53,304 $42,997 (140)% 24% Other Financial Data: EBITDA (1)$103,556 $144,195 $93,302 (28)% 55%Adjusted EBITDA (1)193,778 164,839 105,946 18 % 56%Capital expenditures (2)128,325 109,376 77,296 17 % 42%Acquisitions of gathering systems (3)315,872 458,914 — * *Distributable cash flow (1)(2)139,611 128,141 90,947 9 % 41% Operating Data: Miles of pipeline as of December 312,348 2,283 1,874 3 % 22%Aggregate average throughput (MMcf/d)1,418 1,138 952 25 % 20%Aggregate average throughput rate per Mcf$0.46 $0.50 $0.41 (8)% 22%__________*Not considered meaningful(1) See "Non-GAAP Financial Measures" herein for additional information on EBITDA, adjusted EBITDA and distributable cash flow as well as theirreconciliations to the most directly comparable GAAP financial measure.(2) See "Liquidity and Capital Resources" herein for additional information on capital expenditures.(3) Reflects cash paid and value of units issued, if any, to fund acquisitions and/or drop downs. For additional information, see Note 15 to the auditedconsolidated financial statements.53Table of ContentsConsolidated Overview of the Years Ended December 31, 2014, 2013 and 2012Volumes. For the year ended December 31, 2014, our aggregate throughput volumes increased to an average of 1,418 MMcf/d, compared with anaverage of 1,138 MMcf/d for the year ended December 31, 2013. The increase in volume throughput largely reflects the contribution fromMountaineer Midstream and the Grand River system as a result of growth at Red Rock Gathering, partially offset by volume throughput declines onthe DFW Midstream and Legacy Grand River systems. Volume throughput on the DFW Midstream system benefited in the prior-year period due tothe first quarter 2013 commissioning of an additional compressor which increased throughput capacity on the DFW Midstream system by 40MMcf/d.Our aggregate throughput volumes increased to an average of 1,138 MMcf/d for the year ended December 31, 2013, compared with an average of952 MMcf/d for the year ended December 31, 2012. The 2013 increase in volume throughput largely reflects the combined effect of contributionsfrom Bison Midstream and Mountaineer Midstream, an increase in volume throughput at Red Rock Gathering and the comparative impact of atemporary production curtailment by DFW Midstream's anchor customer during the first and second quarters of 2012.Revenues. For the year ended December 31, 2014, total revenues increased $37.8 million, or 13%, and primarily reflect:•overall growth at Red Rock Gathering;•an increase in gathering services and other fees at Mountaineer Midstream, due in large part to the partial year of ownership in 2013;•overall growth at Bison Midstream primarily due to higher volume throughput;•an overall decline in revenues on the DFW Midstream primarily due to lower volume throughput.For the year ended December 31, 2013, total revenues increased $118.5 million, or 68%, and primarily reflect:•a full year of operations for Red Rock Gathering;•Bison Midstream's contribution to natural gas, NGLs and condensate sales and other;•Mountaineer Midstream's contribution to gathering services and other fees; and•an increase in revenues for the DFW Midstream system due to higher volume throughput.Costs and Expenses. For the year ended December 31, 2014, total costs and expenses increased $92.5 million, or 42%, primarily due to agoodwill impairment for Bison Midstream, an increase in depreciation and amortization across our gathering systems and an increase in cost ofnatural gas and NGLs for Bison Midstream and Red Rock Gathering.For the year ended December 31, 2013, total costs and expenses increased $101.7 million, or 86%, primarily as a result of a full year of operationsfor Red Rock Gathering and the partial-year contributions from Bison Midstream and Mountaineer Midstream in 2013.Segment Overview of the Years Ended December 31, 2014, 2013 and 2012Marcellus Shale. The Mountaineer Midstream gathering system provides our midstream services for the Marcellus Shale reportable segment. Weacquired Mountaineer Midstream in June 2013. Marcellus Shale volume throughput averaged 382 MMcf/d for the year ended December 31, 2014,and reflects the continuation of active drilling by Antero, our anchor customer, and the connection of new wells upstream of the MountaineerMidstream system and as new, upstream compressor stations were commissioned by third parties, also contributing to volume throughput. TheZinnia Loop project, which increased throughput capacity on the Mountaineer Midstream system from 550 MMcf/d to 1,050 MMcf/d, wascommissioned at the end of the third quarter of 2014. The Zinnia Loop is supported by a long-term minimum revenue commitment from Antero.54Table of ContentsInformation regarding our operations in the Marcellus Shale as of or for the years ended December 31 follow. Marcellus Shale(1) Year ended December 31, Percentage Change 2014 2013 2014 v. 2013 (Dollars in thousands)Revenues: Gathering services and other fees$22,694 $9,588 137%Total revenues22,694 9,588 137% Costs and expenses: Operation and maintenance4,560 2,447 86%General and administrative2,194 808 *Depreciation and amortization7,648 3,998 91%Total costs and expenses14,402 7,253 99%Add: Depreciation and amortization7,648 3,998 Segment adjusted EBITDA$15,940 $6,333 * Average throughput (MMcf/d)(2)382 87 *__________* Not considered meaningful(1) Contract terms related to throughput rate per MCF are excluded for confidentiality purposes.(2) For the period of SMLP's ownership in 2013, average throughput was 164 MMcf/d.Gathering Services and Other Fees. Gathering services and other fees benefited in 2014 from a full year of operations under SMLP's managementas well as our build out of the Mountaineer system to keep pace with increases in production from Antero as processing capacity at MarkWest’sSherwood Processing Complex increased.Total Costs and Expenses. Total costs and expenses, and the components thereof, increased during the year ended December 31, 2014, largelyas a result of a full year of operations in 2014.Williston Basin. The Bison Midstream gathering system provides our midstream services for the Williston Basin reportable segment. BisonMidstream was acquired from a subsidiary of Summit Investments in June 2013. Our results include activity for Bison Midstream since February16, 2013, the date on which common control began. Williston Basin volume throughput averaged 18 MMcf/d for the year ended December 31,2014, compared with 16 MMcf/d during our period of ownership in 2013. The increase in volume throughput in 2014 primarily reflects additional padsite connections and newly installed compression capacity, which improved system hydraulics. During the last half of 2014, Bison Midstream'sresults of operations were negatively impacted by declining commodity prices, most notably in relation to its percent-of-proceeds arrangements.55Table of ContentsInformation regarding our operations in the Williston Basin as of or for the years ended December 31 follow. Williston Basin Year ended December 31, Percentage Change 2014 2013 2014 v. 2013 (Dollars in thousands, except fee-rate data)Revenues: Gathering services and other fees$6,414 $3,605 78 %Natural gas, NGLs and condensate sales and other56,040 47,130 19 %Total revenues62,454 50,735 23 % Costs and expenses: Cost of natural gas and NGLs40,159 31,036 29 %Operation and maintenance9,113 4,200 117 %General and administrative3,503 2,234 57 %Depreciation and amortization18,132 16,057 13 %Loss on asset sales296 — *Goodwill impairment54,199 — *Total costs and expenses125,402 53,527 134 %Add: Depreciation and amortization18,132 16,057 Adjustments related to MVC shortfall payments10,743 3,600 Loss on asset sales296 — Goodwill impairment54,199 — Segment adjusted EBITDA$20,422 $16,865 21 % Average throughput (MMcf/d)(1)18 14 29 %Average throughput rate per Mcf$3.46 $3.86 (10)%__________* Not considered meaningful(1) For the year ended December 31, 2013. For the period of SMLP's ownership in 2013, average throughput was 16 MMcf/d.Gathering Services and Other Fees. Gathering services and other fees increased during the year ended December 31, 2014 primarily a result ofincreased volumes under our percent-of-proceeds arrangements on the Bison Midstream system. The aggregate average throughput rate declinedto $3.46 per Mcf in 2014 from $3.86 per Mcf in 2013, primarily as a result of a shift in volume mix.Natural Gas, NGLs and Condensate Sales and Other. The increase in natural gas, NGLs and condensate sales and other for the year endedDecember 31, 2014 was primarily a result of increased volumes under percent-of-proceeds arrangements, partially offset by declining commodityprices.Cost of Natural Gas and NGLs. The increase in the cost of natural gas and NGLs during the year ended December 31, 2014 was primarily a resultof increased volumes under percent-of-proceeds arrangements, partially offset by declining commodity prices.Operation and Maintenance. Operation and maintenance expense increased during the year ended December 31, 2014, largely as a result of a$1.6 million increase in salaries, benefits and incentive compensation, a $0.7 million increase in chemicals expense, a $0.4 million for fieldcommunications and meters and a $0.4 million increase in property taxes.General and Administrative. General and administrative expense increased during the year ended December 31, 2014, largely as a result of anincrease in salaries, benefits and incentive compensation primarily as a result of increased head count.56Table of ContentsDepreciation and Amortization. The increase in depreciation and amortization expense during the year ended December 31, 2014 was largelydriven by an increase in contract amortization and assets placed into service.Goodwill Impairment. During the fourth quarter of 2014, we determined that the goodwill associated with the Bison Midstream system had beenimpaired. Based on available information, we have preliminarily recognized an estimated goodwill impairment of $54.2 million. See "CriticalAccounting Estimates—Recognition and Impairment of Long-Lived Assets—Goodwill" and Note 5 to the audited consolidated financial statementsfor additional information.Barnett Shale. The DFW Midstream gathering system provides our midstream services for the Barnett Shale reportable segment. On September30, 2014, DFW Midstream acquired certain natural gas gathering assets (the "Lonestar assets"). The Lonestar assets gather natural gas under twolong-term, fee-based gathering agreements.DFW Midstream volume throughput declined to 358 MMcf/d during 2014 from 391 MMcf/d in 2013 primarily reflecting continued natural declinesand lack of drilling activity by DFW Midstream's anchor customer, partially offset by the benefit from the Lonestar assets as well as severalcustomers bringing new wells on line early in the second quarter of 2014. For the year ended December 31, 2014, volume throughput was impactedby multiple customers temporarily shutting-in several large pad sites to drill or complete new wells. These shut-ins began in the third quarter of2013 and continued into late 2014 when customer production recommenced from several pad sites.Volume throughput increased to 391 MMcf/d during 2013 from 354 MMcf/d in 2012 largely as a result of the comparative impact of a temporaryproduction curtailment by DFW Midstream's anchor customer during the first and second quarters of 2012 and a short-term boost from the January2013 commissioning of a compressor which increased system capacity by 40 MMcf/d.Information regarding our operations in the Barnett Shale as of or for the years ended December 31 follow. Barnett Shale Year ended December 31, Percentage Change 2014 2013 2012 2014 v. 2013 2013 v. 2012 (Dollars in thousands, except fee-rate data)Revenues: Gathering services and other fees$80,453 $88,730 $80,844 (9)% 10 %Natural gas, NGLs and condensate sales and other13,492 17,626 12,801 (23)% 38 %Amortization of favorable and unfavorable contracts(944) (1,032) (192) (9)% *Total revenues93,001 105,324 93,453 (12)% 13 % Costs and expenses: Operation and maintenance29,438 31,784 25,160 (7)% 26 %General and administrative4,607 6,129 6,453 (25)% (5)%Depreciation and amortization15,657 13,929 12,078 12 % 15 %Loss on asset sales— 113 — * *Long-lived asset impairment5,505 — — * — %Total costs and expenses55,207 51,955 43,691 6 % 19 %Add: Depreciation and amortization16,601 14,961 12,270 Adjustments related to MVC shortfall payments628 1,030 1,638 Loss on asset sales— 113 — Long-lived asset impairment5,505 — — Segment adjusted EBITDA$60,528 $69,473 $63,670 (13)% 9 % Average throughput (MMcf/d)358 391 354 (8)% 10 %Average throughput rate per Mcf$0.59 $0.59 $0.58 — % 2 %__________* Not considered meaningful57Table of ContentsGathering Services and Other Fees. Gathering services and other fees decreased during the year ended December 31, 2014, reflecting thecontinued natural decline in volumes and lack of producer drilling activity. The aggregate average throughput rate was unchanged year over year.The increase in gathering services and other fees during the year ended December 31, 2013 primarily reflected the comparative impact of theproduction curtailment in the first half of 2012, a short-term throughput volume boost which increased system capacity by 40 MMcf/d (both notedabove) and an increase in the aggregate average throughput rate per Mcf.Natural Gas, NGLs and Condensate Sales and Other. The decrease in natural gas, NGLs and condensate sales and other for the year endedDecember 31, 2014, was primarily a result of a decline in revenue associated with natural gas retainage sales at DFW Midstream.The increase in natural gas, NGLs and condensate sales and other for the year ended December 31, 2013, was primarily a result of higherthroughput volumes and the associated retainage on our DFW Midstream system, and an increase in the prices we were able to obtain for naturalgas sales.Operation and Maintenance. Operation and maintenance expense decreased during the year ended December 31, 2014, largely as a result of a$3.8 million decline in third-party natural gas treating expenses, partially offset by a $0.9 million increase in insurance expense and a $0.6 millionincrease in compression-related expenses.Operation and maintenance expense increased during the year ended December 31, 2013, largely as a result of a $4.3 million increase in power-related costs and a $1.6 million increase in third-party natural gas treating expenses.General and Administrative. General and administrative expense decreased during the year ended December 31, 2014, largely as a result of adecrease in the proportionate share of salaries, benefits and incentive compensation allocated to the segment and a decline in professionalservices fees.Depreciation and Amortization. The increases in depreciation and amortization expense during the years ended December 31, 2014 and 2013largely reflect the impact of assets placed in service.Long-Lived Asset Impairment. The long-lived asset impairment recognized in 2014 represents the write off of certain property, plant and equipmentbalances associated with a DFW Midstream compressor station project that was terminated and replaced with a pipeline looping project. See"Critical Accounting Estimates—Recognition and Impairment of Long-Lived Assets—Property, Plant and Equipment and Intangible Assets" andNote 4 to the audited consolidated financial statements for additional information.Piceance Basin. The Legacy Grand River and Red Rock Gathering systems provide our midstream services for the Piceance Basin reportablesegment. Red Rock Gathering became part of the Grand River system in connection with the Red Rock Drop Down in March 2014. As notedabove, our results include activity for Red Rock Gathering since October 23, 2012, the date on which common control began. For additionalinformation, see the notes to the audited consolidated financial statements. References to the Grand River system refer collectively to the LegacyGrand River system and Red Rock Gathering.Volume throughput for the Piceance Basin increased to 660 MMcf/d during 2014 from 646 MMcf/d during 2013 primarily as a result of growth atRed Rock Gathering. Volume throughput from Red Rock Gathering was favorably impacted by new pad site connections for WPX Energy, Inc. andUrsa Resources Group II as well as the March 2014 start-up of a cryogenic processing plant servicing production from Black Hills Corporation.Volume throughput on the Legacy Grand River system declined in 2014 primarily as a result of Encana's temporary suspension of drillingactivities, which began in the fourth quarter of 2013.Volume throughput for the Piceance Basin increased to 646 MMcf/d during 2013 from 598 MMcf/d during 2012 primarily as a result of growth atRed Rock Gathering, partially offset by lower drilling activity, including Encana as noted above, and the natural decline of previously drilledMancos/Niobrara wells on our Legacy Grand River system.Volume growth from Red Rock Gathering's anchor customers continues to offset volume declines from the Legacy Grand River system. This shiftin volume throughput mix has translated into higher average gathering rates per Mcf. Further, certain of our gas gathering agreements for theGrand River system include MVCs that increase in both rate and volume commitment over the next few years and largely mitigate the financialimpact associated with declining volumes from certain customers. As a result, lower volume throughput for the customers subject to these MVCstranslated into larger MVC shortfall payments during 2014 and 2013.58Table of ContentsInformation regarding our operations in the Piceance Basin as of or for the years ended December 31 follow. Piceance Basin Year ended December 31, Percentage Change 2014 2013 2012 2014 v. 2013 2013 v. 2012 (Dollars in thousands, except fee-rate data)Revenues: Gathering services and other fees$125,472 $103,423 $74,286 21 % 39%Natural gas, NGLs and condensate sales and other27,065 23,850 7,675 13 % *Total revenues152,537 127,273 81,961 20 % 55% Costs and expenses: Cost of natural gas and NGLs17,935 13,197 3,224 36 % *Operation and maintenance33,111 33,964 28,709 (3)% 18%General and administrative8,732 11,566 5,979 (25)% 93%Depreciation and amortization40,965 35,527 24,310 15 % 46%Loss on asset sales, net146 — — * —%Total costs and expenses100,889 94,254 62,222 7 % 51%Other income1,185 — — * —%Add: Depreciation and amortization40,965 35,527 24,310 Adjustments related to MVC shortfall payments15,194 12,395 9,130 Loss on asset sales, net146 — — Less: Impact of purchase price adjustments1,185 — — Segment adjusted EBITDA$107,953 $80,941 $53,179 33 % 52% Average throughput (MMcf/d)(1)660 646 598 2 % 8%Average throughput rate per Mcf$0.49 $0.40 $0.31 23 % 29%__________* Not considered meaningful(1) For the year ended December 31, 2012. For the period of SMLP's ownership in 2012, average throughput was 715 MMcf/d.Gathering Services and Other Fees. Gathering services and other fees increased during the year ended December 31, 2014, largely due to theproportionate contribution of higher margin volume throughput from certain customers and the first quarter 2014 commissioning of a natural gasprocessing plant. The aggregate average throughput rate increased to $0.49 per Mcf during 2014 from $0.40 per Mcf during 2013 largely as a resultof the shift in volume throughput mix noted above.Gathering services and other fees increased during the year ended December 31, 2013, largely as a result of the the full-year contribution from RedRock Gathering in 2013. The aggregate average throughput rate increased to $0.40 per Mcf during 2013 from $0.31 per Mcf during 2012, largely asa result of the shift in volume throughput mix noted above. For the year ended December 31, 2013, gathering services and other fees included a$30.8 million contribution as a result of the Red Rock Drop Down, compared with a $4.8 million contribution in 2012.Natural Gas, NGLs and Condensate Sales and Other. The increase in natural gas, NGLs and condensate sales and other for the year endedDecember 31, 2014, was primarily a result of growth at Red Rock Gathering.The increase in natural gas, NGLs and condensate sales and other for the year ended December 31, 2013, was primarily a result of the Red RockDrop Down and an increase in the prices we were able to obtain for natural gas sales. For the year ended December 31, 2013, natural gas, NGLsand condensate sales and other included a $19.3 million contribution as a result of the Red Rock Drop Down, compared with a $4.2 millioncontribution in 2012.Cost of Natural Gas and NGLs. The increase in the year ended December 31, 2014 was primarily a result of the growth at Red Rock Gatheringsystem.59Table of ContentsFor the year ended December 31, 2013, cost of natural gas and NGLs included a $13.2 million contribution as a result of the Red Rock Drop Down,compared with a $3.2 million contribution in 2012.Operation and Maintenance. Operation and maintenance expense decreased during the year ended December 31, 2014, largely as a result of a$0.8 million decrease in property tax expense.Operation and maintenance expense increased during the year ended December 31, 2013, largely as a result of the Red Rock Drop Down. For theyear ended December 31, 2013, operation and maintenance expense included a $12.5 million contribution as a result of the Red Rock Drop Downin 2013, compared with a $2.2 million contribution in 2012. The increase in operation and maintenance expense was partially offset by a $2.8million decline in compressor lease and contract maintenance expenses primarily as a result of our purchase of previously leased compressionassets in the first quarter of 2013.General and Administrative. General and administrative expense decreased during the year ended December 31, 2014, largely as a result of adecrease in the proportionate share of salaries, benefits and incentive compensation allocated to the segment.General and administrative expense increased during the year ended December 31, 2013, largely as a result of an increase in salaries, benefitsand incentive compensation primarily due to the Red Rock Drop Down. For the year ended December 31, 2013, general and administrativeexpense included a $5.5 million contribution as a result of the Red Rock Drop Down, compared with a $0.8 million contribution in 2012.Depreciation and Amortization. The increase in depreciation and amortization expense during the year ended December 31, 2014 was largelydriven by an increase in contract amortization and assets placed into service on the Grand River system.Depreciation and amortization expense increased during the year ended December 31, 2013 largely due to the Red Rock Drop Down. An increasein contract amortization and assets placed into service in connection with the development of Grand River Gathering also contributed to theincrease. Depreciation and amortization expense also included a $9.1 million contribution as a result of the Red Rock Drop Down in 2013,compared with a $1.4 million contribution in 2012.Other income. Other income represents the write off of certain balances that had been previously recognized in connection with the purchaseaccounting for the Legacy Grand River system. See "Non-GAAP Financial Measures—Non-GAAP reconciliations items to note" and Note 15 tothe audited consolidated financial statements for additional information.Corporate. Corporate represents those revenues and expenses that are not specifically attributable to a reportable segment or that have not beenallocated to our reportable segments, including certain general and administrative expense items, transaction costs and interest expense. Items tonote follow.General and Administrative. General and administrative expense increased during the year ended December 31, 2014, largely as a result of anincrease in salaries, benefits and incentive compensation primarily due to increased head count, an increase in professional expenses associatedwith our obligations under Section 404 of the Sarbanes-Oxley Act of 2002 and our adoption of Internal Control - Integrated Framework (2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO 2013"). The substantial majority of our first-yearCOSO 2013 implementation expenses are not expected to be incurred beyond 2014.Transaction Costs. Transaction costs for the year ended December 31, 2014, primarily related to financial and legal advisory costs associated withthe Red Rock Drop Down. Transaction costs were $2.8 million for the year ended December 31, 2013, of which $2.0 million related to theacquisition of the Mountaineer Midstream system and $0.8 million related to the acquisition of the Bison Midstream system. Transaction costs of$2.0 million in 2012 largely reflect costs associated with Summit Investments' acquisition of the Red Rock Gathering in October 2012.Interest Expense and Affiliated Interest Expense. The increase in interest expense during the year ended December 31, 2014, was primarily drivenby our issuance of $300.0 million of 5.50% senior notes in July 2014, our issuance of $300.0 million of 7.50% senior notes in June 2013, and ahigher average outstanding balance on our revolving credit facility as a result of our June 2013 and March 2014 borrowings to partially fund thePartnership's acquisition capital expenditures. We used the proceeds from our July 2014 5.50% senior notes offering to partially pay down ourrevolving credit facility.The increase in interest expense during the year ended December 31, 2013, primarily reflects our issuance of $300.0 million of 7.50% senior notesin June 2013. Additionally, higher balances on our revolving credit facility60Table of Contentsbeginning in May 2012 as well as an increase in commitment fees as a result of the May 2012 amendment and restatement of the revolving creditfacility, which increased our borrowing capacity by $265.0 million and the June 2013 amendment and restatement, which increased our borrowingcapacity by $50.0 million, also contributed to the increase in interest expense.Affiliated interest expense for the year ended December 31, 2012 related to the $200.0 million promissory notes that we issued to the Sponsors inconnection with the acquisition of the Grand River system in October 2011. The promissory notes were partially prepaid in May 2012 with theremaining balance repaid in July 2012.Non-GAAP Financial MeasuresEBITDA, adjusted EBITDA and distributable cash flow are not financial measures presented in accordance with accounting principles generallyaccepted in the United States of America ("GAAP"). We define EBITDA as net income or loss, plus interest expense, income tax expense, anddepreciation and amortization, less interest income and income tax benefit. We define adjusted EBITDA as EBITDA plus adjustments related toMVC shortfall payments, impairments and other noncash expenses or losses, less other noncash income or gains. We define distributable cashflow as adjusted EBITDA plus cash interest received, less cash interest paid, senior notes interest, cash taxes paid and maintenance capitalexpenditures. We believe that the presentation of these non-GAAP financial measures provides useful information to investors in assessing ourfinancial condition and results of operations.Net income or loss and net cash provided by operating activities are the GAAP financial measures most directly comparable to EBITDA, adjustedEBITDA and distributable cash flow. Our non-GAAP financial measures should not be considered as alternatives to the most directly comparableGAAP financial measure. Furthermore, each of these non-GAAP financial measures has limitations as an analytical tool because it excludessome but not all items that affect the most directly comparable GAAP financial measure. Some of these limitations include:•certain items excluded from EBITDA, adjusted EBITDA and distributable cash flow are significant components in understanding andassessing a company's financial performance, such as a company's cost of capital and tax structure;•EBITDA, adjusted EBITDA, and distributable cash flow do not reflect our cash expenditures or future requirements for capital expendituresor contractual commitments;•EBITDA, adjusted EBITDA, and distributable cash flow do not reflect changes in, or cash requirements for, our working capital needs;•although depreciation and amortization are noncash charges, the assets being depreciated and amortized will often have to be replaced inthe future, and EBITDA, adjusted EBITDA and distributable cash flow do not reflect any cash requirements for such replacements; and•our computations of EBITDA, adjusted EBITDA and distributable cash flow may not be comparable to other similarly titled measures ofother companies.We compensate for the limitations of EBITDA, adjusted EBITDA and distributable cash flows as analytical tools by reviewing the comparableGAAP financial measures, understanding the differences between the financial measures and incorporating these data points into our decision-making process.EBITDA, adjusted EBITDA or distributable cash flow should not be considered in isolation or as a substitute for analysis of our results as reportedunder GAAP. Because EBITDA, adjusted EBITDA and distributable cash flow may be defined differently by other companies in our industry, ourdefinitions of these non-GAAP financial measures may not be comparable to similarly titled measures of other companies, thereby diminishingtheir utility.Non-GAAP reconciliations items to note. The following items should be noted when reviewing our non-GAAP reconciliations:•EBITDA, adjusted EBITDA, distributable cash flow and net cash provided by operating activities include transaction costs. These unusualexpenses are settled in cash. For additional information, see "Results of Operations—Corporate" herein.•Adjustments related to MVC shortfall payments account for (i) the net increases or decreases in deferred revenue for MVC shortfallpayments and (ii) our inclusion of expected annual MVC shortfall payments. We include a proportional amount of these historical orexpected minimum volume commitment shortfall payments in each quarter prior to the quarter in which we actually receive the shortfallpayment.61Table of Contents•The goodwill impairment recognized in the year ended December 31, 2014 relates to the Bison Midstream system of our Williston Basinsegment. See "Results of Operations—Williston Basin," "Critical Accounting Estimates—Recognition and Impairment of Long-LivedAssets" and Note 5 to the audited consolidated financial statements for additional information.•The long-lived asset impairment recognized in the year ended December 31, 2014 relates to the DFW Midstream system of our BarnettShale segment. See "Results of Operations—Barnett Shale," "Critical Accounting Estimates—Recognition and Impairment of Long-LivedAssets" and Note 4 to the audited consolidated financial statements for additional information.•The impact of purchase price adjustments reflects certain balances previously recognized in connection with the Predecessor's purchaseaccounting for the Legacy Grand River system that we wrote off during the fourth quarter of 2014. This write off was recognized in otherincome. See "Results of Operations—Piceance Basin" and Note 15 to the audited consolidated financial statements for additionalinformation.•Senior notes interest represents the net of interest expense accrued and paid during the period. See "Liquidity and Capital Resources—Long-Term Debt" and Note 7 to the audited consolidated financial statements for additional information.•Maintenance capital expenditures are cash expenditures (including expenditures for the addition or improvement to, or the replacement of,our capital assets or for the acquisition of existing, or the construction or development of new, capital assets) made to maintain our long-term operating income or operating capacity. In the fourth quarter of 2012, we began tracking maintenance capital expenditures for thepurposes of calculating distributable cash flow. Prior to the fourth quarter of 2012, we did not distinguish between maintenance andexpansion capital expenditures. For the year ended December 31, 2012 the calculation of distributable cash flow and adjusted distributablecash flow includes an estimate for the portion of total capital expenditures that were maintenance capital expenditures.•Interest expense presented in the net income-basis non-GAAP reconciliation includes amortization of deferred loan costs while interestexpense presented in the cash flow-basis non-GAAP reconciliation is adjusted to exclude amortization of deferred loan costs. See theconsolidated statements of cash flows for additional information.62Table of ContentsNet Income-Basis Non-GAAP Reconciliation. The following table presents a reconciliation of net income to EBITDA, adjusted EBITDA anddistributable cash flow for the periods indicated. Year ended December 31, 2014 2013 2012 (In thousands)Reconciliation of Net Income to EBITDA, Adjusted EBITDA and Distributable CashFlow: Net (loss) income$(21,164) $53,304 $42,997Add: Interest expense40,159 19,173 12,766Income tax expense631 729 682Depreciation and amortization82,990 69,962 36,674Amortization of favorable and unfavorable contracts944 1,032 192Less: Interest income4 5 9EBITDA$103,556 $144,195 $93,302Add: Adjustments related to MVC shortfall payments26,565 17,025 10,768Unit-based compensation4,696 3,506 1,876Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —Less: Impact of purchase price adjustments1,185 — —Adjusted EBITDA$193,778 $164,839 $105,946Add: Cash interest received4 5 9Less: Cash interest paid31,524 9,016 8,283Senior notes interest6,733 12,125 —Cash taxes paid— 660 650Maintenance capital expenditures15,914 14,902 6,075Distributable cash flow$139,611 $128,141 $90,94763Table of ContentsCash Flow-Basis Non-GAAP Reconciliation. The following table presents a reconciliation of net cash provided by operating activities toEBITDA, adjusted EBITDA and distributable cash flow for the periods indicated. Year ended December 31, 2014 2013 2012 (In thousands)Reconciliation of Net Cash Provided by Operating Activities to EBITDA, AdjustedEBITDA and Distributable Cash Flow: Net cash provided by operating activities$147,935 $140,689 $89,392Add: Interest expense37,389 16,927 5,882Income tax expense631 729 682Impact of purchase price adjustments1,185 — —Changes in operating assets and liabilities(18,738) (10,526) (769)Less: Unit-based compensation4,696 3,506 1,876Interest income4 5 9Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —EBITDA$103,556 $144,195 $93,302Add: Adjustments related to MVC shortfall payments26,565 17,025 10,768Unit-based compensation4,696 3,506 1,876Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —Less: Impact of purchase price adjustments1,185 — —Adjusted EBITDA$193,778 $164,839 $105,946Add: Cash interest received4 5 9Less: Cash interest paid31,524 9,016 8,283Senior notes interest6,733 12,125 —Cash taxes paid— 660 650Maintenance capital expenditures15,914 14,902 6,075Distributable cash flow$139,611 $128,141 $90,947Liquidity and Capital ResourcesBased on the terms of our partnership agreement, we expect that we will distribute to our unitholders most of the cash generated by ouroperations. As a result, we expect to fund future capital expenditures from cash and cash equivalents on hand, cash flow generated from ouroperations, borrowings under our revolving credit facility and future issuances of equity and debt securities. Prior to our IPO in October 2012, welargely relied on internally generated cash flows and capital contributions from the Sponsors to satisfy our capital expenditure requirements.64Table of ContentsCapital Markets ActivityNovember 2013 Shelf Registration Statement. In October 2013, we filed a shelf registration statement with the SEC to register up to $1.2 billionof equity and debt securities in primary offerings as well as all of the 14,691,397 common units held by a subsidiary of Summit Investments inaccordance with our obligations under several registration rights agreements. In November 2013, the SEC declared our shelf registration statementeffective.In March 2014, we completed an underwritten public offering of 10,350,000 common units at a price of $38.75 per unit, of which 5,300,000common units were offered by the Partnership and 5,050,000 common units were offered by a subsidiary of Summit Investments. Concurrent withthe offering, our general partner made a capital contribution to maintain its 2% general partner interest. We used the proceeds from our primaryoffering of common units and the general partner capital contribution to fund a portion of the purchase of Red Rock Gathering.In September 2014, a subsidiary of Summit Investments completed an underwritten public offering of 4,347,826 SMLP common units. We did notreceive any proceeds from the this offering.Following these offerings, we can issue up to $1.0 billion of debt and equity securities in primary offerings and 5,293,571 common units pursuantto this shelf registration statement.July 2014 Shelf Registration Statement. In July 2014, we filed a registration statement with the SEC to issue an unlimited amount of debt andequity securities and shortly thereafter completed a public offering of $300.0 million aggregate principal 5.5% senior notes due 2022. We used theproceeds to repay a portion of the outstanding borrowings under our revolving credit facility.Private Offerings of Debt and Equity. In June 2013, we issued $300.0 million unregistered 7.5% senior unsecured notes and guarantees notesmaturing July 1, 2021 (the "7.5% senior notes") and used the net proceeds to partially fund the acquisition of Mountaineer Midstream. In March2014, the SEC declared our registration statement to exchange all of the unregistered 7.5% senior notes and guarantees for registered seniornotes and guarantees with substantially identical terms effective. In April 2014, the exchange period concluded with 100% of the unregisteredsenior notes being exchanged for registered notes.In June 2013, we issued common limited partner units and general partner interests to a subsidiary of Summit Investments to partially fund theBison Drop Down and the acquisition of Mountaineer Midstream.For additional information, see Notes 1, 7, 8 and 15 to the audited consolidated financial statements.Long-Term DebtRevolving Credit Facility. We have a $700.0 million senior secured revolving credit facility. The revolving credit facility is secured by themembership interests of Summit Holdings and those of its subsidiaries. Substantially all of Summit Holdings' and its subsidiaries' assets arepledged as collateral under the revolving credit facility. The facility, and Summit Holdings' obligations, are guaranteed by SMLP and each of itssubsidiaries. As of December 31, 2014, the outstanding balance of the revolving credit facility was $208.0 million and the unused portion totaled$492.0 million. As of December 31, 2014, we were in compliance with the covenants in the revolving credit facility. There were no defaults orevents of default during 2014.Senior Notes. In July 2014, Summit Holdings and its 100% owned finance subsidiary, Summit Midstream Finance Corp. ("Finance Corp.,"together with Summit Holdings, the "Co-Issuers") co-issued $300.0 million of 5.50% senior unsecured notes maturing August 15, 2022. In June2013, the Co-Issuers co-issued $300.0 million of 7.50% senior unsecured notes maturing July 1, 2021. The 7.5% senior notes were initially sold inreliance on Rule 144A and Regulation S under the Securities Act. Effective as of April 7, 2014, all of the holders of our 7.5% senior notesexchanged their unregistered 7.5% senior notes and the guarantees of those notes for identical registered notes and guarantees. There were nodefaults or events of default during 2014 on either series of senior notes.For additional information, see Note 7 to the audited consolidated financial statements.65Table of ContentsCash FlowsThe components of the change in cash and cash equivalents were as follows: Year ended December 31, 2014 2013 2012 (In thousands)Net cash provided by operating activities$147,935 $140,689 $89,392Net cash used in investing activities(443,872) (518,791) (77,296)Net cash provided by (used in) financing activities302,008 387,125 (16,224)Change in cash and cash equivalents$6,071 $9,023 $(4,128)Operating activities. Cash flows from operating activities increased by $7.2 million for the year ended December 31, 2014 largely due to cashreceived as a result of MVCs.Cash flows from operating activities increased by $51.3 million for the year ended December 31, 2013 largely as result of the Red Rock DropDown, an increase in volumes on the DFW Midstream system and the contribution from the Bison Midstream and Mountaineer Midstreamsystems, partially offset by a decline in volumes on the Legacy Grand River system.Investing activities. Cash flows used in investing activities for the year ended December 31, 2014 primarily reflect the Partnership's acquisition ofRed Rock Gathering from a subsidiary of Summit Investments. Additional expenditures for the year ended December 31, 2014 primarily reflectconstruction of a processing plant on the Grand River Gathering system, projects to expand compression capacity on the Bison Midstreamsystem, adding pipeline on the Mountaineer Midstream system, the February 2014 commissioning of a new natural gas treating facility on theDFW Midstream system and the purchase of the Lonestar assets.Cash flows used in investing activities for the year ended December 31, 2013 were largely due to the acquisitions of Bison Midstream andMountaineer Midstream. Additional expenditures in 2013 reflect the construction of seven miles of new gathering pipeline across the DFWMidstream system and the acquisition of previously leased compression assets on the Grand River system. We also commissioned a newcompressor unit on the DFW Midstream system in January 2013. Development activities also included construction projects to connect newreceipt points on the Bison Midstream and DFW Midstream systems and to expand compression capacity on the Bison Midstream system. Wealso began construction on a new 150 gallon per minute natural gas treating facility on the DFW Midstream system, which was commissioned inthe first quarter of 2014.In 2012, total capital expenditures were largely the result of the construction of new pipeline and compression infrastructure to connect new padsites on our DFW Midstream system and to install meters and build out medium-pressure infrastructure on our Grand River system.66Table of ContentsFinancing activities. Details of cash flows provided by financing activities for the three-year period ended December 31, 2014, were as follows: Year ended December 31, 2014 2013 2012 (In thousands)Cash flows from financing activities: Distributions to unitholders$(122,224) $(90,196) $—Borrowings under revolving credit facility237,295 380,950 213,000Repayments under revolving credit facility(315,295) (294,180) (160,770)Deferred loan costs(5,320) (10,608) (3,344)Tax withholdings on vested SMLP LTIP awards(656) — —Proceeds from issuance of common units197,806 — 263,125Contribution from general partner4,235 2,229 —Cash advance from Summit Investments to contributed subsidiaries, net1,982 738 500Expenses paid by Summit Investments on behalf of contributed subsidiaries4,413 10,149 2,536Issuance of senior notes300,000 300,000 —Issuance of units to affiliate in connection with the Mountaineer Acquisition— 100,000 —Repurchase of equity-based compensation awards(228) (11,957) —Red Rock Gathering cash contributed by Summit Investments— — 1,097Repayment of promissory notes payable to Sponsors— — (209,230)Distributions to Sponsors— — (123,138)Net cash provided by (used in) financing activities$302,008 $387,125 $(16,224)Net cash provided by financing activities for the year ended December 31, 2014 was primarily composed of the following:•Proceeds from the July 2014 issuance of 5.5% senior notes, the net of which was used to pay down our revolving credit facility. Weincurred loan costs of $5.1 million in connection with their issuance which will be amortized over the life of the 5.5% senior notes;•Borrowings of $100.0 million under our revolving credit facility to partially fund the Red Rock Drop Down;•Net proceeds from an offering of common units in March 2014, which were used to partially fund the Red Rock Drop Down; and•Distributions declared in respect of the first, second and third quarters of 2014 and the fourth quarter of 2013 (paid in the first quarter of2014).Net cash provided by financing activities for the year ended December 31, 2013 was primarily composed of the following:•Distributions declared in respect of the first, second and third quarters of 2013 and the fourth quarter of 2012 (paid in the first quarter of2013);•Borrowings under our revolving credit facility, of which $200.0 million was used to partially fund the Bison Drop Down and $110.0 millionwas used to partially fund the Mountaineer Acquisition;•Proceeds from the June 2013 issuance of 7.5% senior notes, the net of which was used to pay down our revolving credit facility. Weincurred loan costs of $7.4 million in connection with the senior notes issuance which will be amortized over the life of the 7.5% seniornotes;•Payments of $294.2 million on our revolving credit facility, all of which was funded by the June 2013 issuance of 7.5% senior notes;•Issuance of $98.0 million of common units and $2.0 million of general partner interests to Summit Investments for cash to partially fundthe Mountaineer Acquisition; and•Our repurchase of the remaining vested DFW Net Profits Interests.67Table of ContentsNet cash used in financing activities for the year ended December 31, 2012 was primarily composed of the following:•Borrowings of $163.0 million under the revolving credit facility in May 2012, of which we used $160.0 million to prepay principal amountsoutstanding under certain unsecured promissory notes payable to the Sponsors and borrowings of $50.0 million in July 2012, of which weused $49.2 million to repay the balance of the unsecured promissory notes payable to the Sponsors; and•Proceeds of $263.1 million from the issuance of our common units in connection with our IPO (including the proceeds from the exercise ofthe underwriters' option to purchase additional common units). We used $140.0 million of the IPO proceeds to pay down our revolvingcredit facility. We also paid $88.0 million to reimburse Summit Investments for certain capital expenditures it incurred with respect toassets it contributed to us and distributed $35.1 million to Summit Investments for the common units it sold from the units originallyallocated to it in connection with the exercise of the underwriters' option to purchase additional common units.Contractual ObligationsThe table below summarizes our contractual obligations and other commitments as of December 31, 2014: Total Less than 1 year 1-3 years 3-5 years More than 5years (In thousands)Long-term debt and interest payments (1)$1,128,219 $47,014 $94,027 $292,678 $694,500Purchase obligations (2)19,434 15,859 3,462 113 —Total contractual obligations$1,147,653 $62,873 $97,489 $292,791 $694,500__________(1) For the purpose of calculating future interest on the revolving credit facility, assumes no change in balance or rate from December 31, 2014. Includes a0.50% commitment fee on the unused portion of the revolving credit facility. See Note 7 to the audited consolidated financial statements for additionalinformation.(2) Represents agreements to purchase goods or services that are enforceable and legally binding.Operating leases. A substantial majority of the operating leases that support our operations have been entered into by Summit Investments withthe associated rent expense allocated to us. Future minimum lease payments associated with operating leases in the Partnership's name areimmaterial. See Note 14 to the audited consolidated financial statements for additional information.Capital RequirementsOur business is capital-intensive, requiring significant investment for the maintenance of existing gathering systems and the acquisition orconstruction and development of new gathering systems and other midstream assets and facilities. Our partnership agreement requires that wecategorize our capital expenditures as either:•maintenance capital expenditures, which are cash expenditures (including expenditures for the addition or improvement to, or thereplacement of, our capital assets or for the acquisition of existing, or the construction or development of new, capital assets) made tomaintain our long-term operating income or operating capacity; or•expansion capital expenditures, which are cash expenditures incurred for acquisitions or capital improvements that we expect will increaseour operating income or operating capacity over the long term.In the fourth quarter of 2012, we began tracking maintenance capital expenditures for the purposes of calculating distributable cash flow. Prior tothe fourth quarter of 2012, we did not distinguish between maintenance and expansion capital expenditures. For the year ended December 31,2012, distributable cash flow includes an estimate for the portion of total capital expenditures that were maintenance capital expenditures for ninemonths ended September 30, 2012.For the year ended December 31, 2014, SMLP recorded total capital expenditures of $128.3 million, which included $15.9 million of maintenancecapital expenditures. Total acquisition capital expenditures of $318.8 million included $307.9 million to fund the Red Rock Drop Down (including a$2.9 million working capital adjustment settled in 2015) and $10.9 million for the acquisition of the Lonestar assets. Other expansion capitalexpenditures during 2014 were primarily related to compression capacity expansion work on the Bison Midstream system and the construction ofpipeline and additional compressor capacity for Mountaineer Midstream.68Table of ContentsWe anticipate that we will continue to make significant expansion capital expenditures in the future. Consequently, our ability to develop andmaintain sources of funds to meet our capital requirements is critical to our ability to meet our growth objectives. We expect that our futureexpansion capital expenditures will be funded by borrowings under the revolving credit facility and the issuance of debt and equity securities.We believe that our existing $700.0 million revolving credit facility, which had approximately $492.0 million of available capacity at December 31,2014, together with our access to the debt and equity capital markets, will be adequate to finance our acquisition strategy for the foreseeablefuture without adversely impacting our liquidity or our ability to make quarterly cash distributions to our unitholders.DistributionsBased on the terms of our partnership agreement, we expect to distribute to unitholders most of the cash generated by our operations. Foradditional information, see "Our Cash Distribution Policy and Restrictions on Distributions" in Item 5. Market for Registrant’s Common Equity,Related Stockholder Matters and Issuer Purchases of Equity Securities and Note 8 to the audited consolidated financial statements.Credit Risk and Customer ConcentrationWe examine the creditworthiness of counterparties to whom we extend credit and manage our exposure to credit risk through credit analysis, creditapproval, credit limits and monitoring procedures, and for certain transactions, we may request letters of credit, prepayments or guarantees. Foradditional information, see Note 11 to the audited consolidated financial statements.Off-Balance Sheet ArrangementsWe had no off-balance sheet arrangements as of or during the year ended December 31, 2014.Critical Accounting EstimatesWe prepare our financial statements in accordance with GAAP. These principles are established by the Financial Accounting Standards Board. Weemploy methods, estimates and assumptions based on currently available information when recording transactions resulting from businessoperations. Our significant accounting policies are described in Note 2 to the audited consolidated financial statements.The estimates that we deem to be most critical to an understanding of our financial position and results of operations are those related todetermination of fair value and recognition of deferred revenue. The preparation and evaluation of these critical accounting estimates involve theuse of various assumptions developed from management's analyses and judgments. Subsequent experience or use of other methods, estimatesor assumptions could produce significantly different results. Our critical accounting estimates are as follows:Recognition and Impairment of Long-Lived AssetsOur long-lived assets include property, plant and equipment, our contract intangible assets and goodwill.Property, Plant and Equipment and Intangible Assets. As of December 31, 2014, we had net property, plant and equipment with a carryingvalue of approximately $1.24 billion and net intangible assets with a carrying value of approximately $466.9 million.When evidence exists that we will not be able to recover a long-lived asset's carrying value through future cash flows, we write down the carryingvalue of the asset to its estimated fair value. We test assets for impairment when events or circumstances indicate that the carrying value of along-lived asset may not be recoverable. With respect to property, plant and equipment and our contract intangible assets, the carrying value of along-lived asset is not recoverable if the carrying value exceeds the sum of the undiscounted cash flows expected to result from the asset's useand eventual disposal. In this situation, we recognize an impairment loss equal to the amount by which the carrying value exceeds the asset's fairvalue. We determine fair value using an income approach in which we discount the asset's expected future cash flows to reflect the riskassociated with achieving the underlying cash flows.•During the fourth quarter of 2014, prices for natural gas, NGLs and crude oil continued to decline such that we identified a need to evaluatethe goodwill associated with the Bison Midstream system. In connection with this evaluation, we also evaluated the property, plant andequipment and intangible assets of our Bison Midstream reporting unit for impairment and concluded that no impairment was necessary.During the fourth quarter of 2014, we also reviewed certain property, plant and equipment balances associated with a69Table of Contentscompressor station project on our DFW Midstream system that was terminated and concluded that a portion of their carrying value was nolonger recoverable. As such, we wrote off approximately $5.5 million of costs and reflected the net impact of this action in long-lived assetimpairment on the statement of operations.•During the years ended December 31, 2013 and 2012, we concluded that none of our long-lived assets had been impaired.For additional information, see Notes 2, 4 and 5 to the audited consolidated financial statements.Goodwill. We evaluate goodwill for impairment annually on September 30. We also evaluate goodwill whenever events or circumstances indicatethat it is more likely than not that the fair value of a reporting unit is less than its carrying value, including goodwill. We have three reporting unitswhich have goodwill: (i) Grand River Gathering, (ii) Bison Midstream and (iii) Mountaineer Midstream.We performed our annual goodwill impairment analysis as of September 30, 2014. We determined that the fair value of the Grand River Gatheringand Mountaineer Midstream reporting units substantially exceeded their carrying value, including goodwill. We also determined that the fair value ofthe Bison Midstream reporting unit exceeded its carrying value, including $54.2 million of goodwill, although it did not exceed its carrying value bya substantial amount. In connection therewith, we concluded that the fair values of our reporting units exceeded their carrying values, includinggoodwill, and as such concluded that none of our goodwill had been impaired.During the latter part of the fourth quarter of 2014, the declines in prices for natural gas, NGLs and crude oil accelerated, negatively impactingproducers in each of our areas of operation. As a result, we considered whether the goodwill associated with our Grand River Gathering,Mountaineer Midstream and Bison Midstream reporting units could have been impaired. Our assessments related to Grand River Gathering andMountaineer Midstream did not result in an indication that the associated goodwill had been impaired. Furthermore, we do not believe that eitherreporting unit is at risk of failing step one of the goodwill impairment test as of December 31, 2014 due to the substantial amounts by which eachreporting unit’s fair value, including goodwill, exceeded its carrying value, including goodwill.We also assessed whether the goodwill associated with the Bison Midstream reporting unit could have been impaired. In connection therewith, wenoted that a key Bison Midstream customer announced that it was delaying its previously announced drilling plans. The combined impact of (i) theprice declines on revenues under its percent-of proceeds contracts and (ii) the Partnership's reduction in its forecasted volume assumption inresponse to the decline in our customer’s drilling plans increased the likelihood that the goodwill associated with the Bison Midstream reporting unitwas impaired. As such, we concluded that a triggering event occurred during the fourth quarter of 2014 requiring that we test the goodwillassociated with the Bison Midstream reporting unit for impairment.The results of our step one goodwill impairment testing indicated that the fair value of the Bison Midstream reporting unit was below its carryingvalue, including goodwill. This result required that we perform step two of the goodwill impairment test. To perform step two, we first determinedthe fair values of the identifiable assets and liabilities. Significant assumptions utilized in the determination of the fair value of each reporting unit'sindividual assets and liabilities included the determination of discount rate and contributing asset charge utilized in our contract intangibles,expected levels of throughput volume and associated capital expenditures and commodity prices.Our preliminary estimates of the fair values of the identified assets and liabilities calculated in the step two testing of the Bison Midstreamreporting unit indicated that all of the associated goodwill had been impaired. As such, we recorded an estimated goodwill impairment of $54.2million. This amount represents our best estimate of impairment pending the finalization of the fair value calculations, which we expect to finalizein the first quarter of 2015.See Notes 2 and 5 to the audited consolidated financial statements for additional information.Minimum Volume CommitmentsThe majority of our gas gathering agreements provide for a monthly or annual MVC from our customers. As of December 31, 2014, we had MVCstotaling 3.8 Tcf through 2026. Under these monthly, quarterly or annual MVCs, our customers agree to ship a minimum volume of natural gas onour gathering systems or to pay a minimum monetary amount over certain periods during the term of the MVC. A customer must make a shortfallpayment to us at the end of the contract month, quarter or year, as applicable, if its actual throughput volumes are less than its MVC for theapplicable period. Certain customers are entitled to utilize shortfall payments to offset gathering fees in one or more subsequent periods to theextent that such customer's throughput volumes in subsequent periods exceed its MVC for that period.70Table of ContentsWe recognize customer billings for obligations under their MVCs as revenue when the obligations are billable under the contract and the customerdoes not have the right to utilize shortfall payments to offset gathering fees in excess of its MVCs in subsequent periods.We record customer billings for obligations under their MVCs as deferred revenue when the customer has the right to utilize shortfall payments tooffset gathering or processing fees in subsequent periods. We recognize deferred revenue under these arrangements in revenue once allcontingencies or potential performance obligations associated with the related volumes have either (i) been satisfied through the gathering orprocessing of future excess volumes of natural gas, or (ii) expired (or lapsed) through the passage of time pursuant to the terms of the applicablenatural gas gathering agreement.We classify deferred revenue as a current liability for arrangements where the expiration of a customer's right to utilize shortfall payments is twelvemonths or less. We classify deferred revenue as noncurrent for arrangements where the expiration of the right to utilize shortfall payments and ourestimate of its potential utilization is more than 12 months. As of December 31, 2014, current deferred revenue totaled $2.4 million. Noncurrentdeferred revenue totaled $55.2 million at December 31, 2014 and represents amounts that provide these customers the ability to offset theirgathering fees over a period up to seven years to the extent that their throughput volumes exceed their MVC.We billed $50.9 million of MVC shortfall payments to customers that did not meet their MVCs during 2014. Certain of our natural gas gatheringagreements do not have credit banking mechanisms and as such, the MVC shortfall payments from these customers are accounted for asrevenue in the period that they are earned. We recognized $1.5 million of gathering revenue due to the credit bank expiration of previous MVCshortfall payments and $22.7 million of gathering revenue associated with MVC shortfall payments in 2014. Of the billings for MVC shortfallpayments, $26.4 million was recorded as deferred revenue on SMLP’s balance sheet because these customers have the ability to use these MVCshortfall payments to offset gathering fees related to future throughput in excess of future period MVCs. MVC shortfall payment adjustments in thefourth quarter of 2014 totaled $0.2 million and included adjustments related to future anticipated shortfall payments. The net impact on adjustedEBITDA of MVC billings and their recognition was $50.8 million.The following table presents the impact of our MVC activity by reportable segment during the year ended December 31, 2014. Year ended December 31, 2014 MVC billings Gathering revenue Adjustmentsto MVC shortfallpayments Net impactto adjusted EBITDA (In thousands)Net change in deferred revenue: Williston Basin$10,743 $— $10,743 $10,743Barnett Shale2,609 1,525 821 2,346Piceance Basin14,813 — 14,813 14,813Total change in deferred revenue$28,165 $1,525 $26,377 $27,902 MVC shortfall payment adjustments: Marcellus Shale$1,742 $1,742 $— $1,742Barnett Shale495 495 (193) 302Piceance Basin20,462 20,462 381 20,843Total MVC shortfall payment adjustments$22,699 $22,699 $188 $22,887 Total$50,864 $24,224 $26,565 $50,789For additional information, see Notes 2 and 6 to the audited consolidated financial statements.71Table of ContentsItem 7A. Quantitative and Qualitative Disclosures About Market Risk.Interest Rate RiskWe have exposure to changes in interest rates on our indebtedness associated with the revolving credit facility. The credit markets have recentlyexperienced historical lows in interest rates. As the overall economy strengthens, it is probable that monetary policy will tighten further, resulting inhigher interest rates to counter possible inflation. Interest rates on floating rate credit facilities and future debt offerings could be higher thancurrent levels, causing our financing costs to increase accordingly.A hypothetical 1.0% increase (decrease) in interest rates would have increased (decreased) our interest expense by approximately $2.7 million forthe year ended December 31, 2014.Commodity Price RiskWe currently generate a substantial majority of our revenues pursuant to primarily long-term and fee-based gas gathering agreements, many ofwhich include MVCs and areas of mutual interest. Our direct commodity price exposure relates to (i) our sale of physical natural gas we retain fromour DFW Midstream customers, (ii) our procurement of electricity to operate our electric-drive compression assets on the DFW Midstream system,(iii) the sale of condensate volumes that we retain on the Grand River system and (iv) the sale of processed natural gas and natural gas liquidspursuant to our percent-of-proceeds and keep-whole contracts with certain of our customers on the Bison Midstream and Grand River Gatheringsystems. Our gas gathering agreements with our DFW Midstream customers permit us to retain a certain quantity of natural gas that we sell tooffset the power costs we incur to operate our electric-drive compression assets. Our gas gathering agreements with our Grand River customerspermit us to retain condensate volumes from the Grand River system gathering lines. We manage our direct exposure to natural gas and powerprices through the use of forward power purchase contracts with wholesale power providers that require us to purchase a fixed quantity of power ata fixed heat rate based on prevailing natural gas prices on the Waha Hub Index. Because we also sell our retainage gas at prices that are basedon the Waha Hub Index, we have effectively fixed the relationship between our compression electricity expense and natural gas sales. We do notenter into risk management contracts for speculative purposes.Item 8. Financial Statements and Supplementary Data.Report of Independent Registered Public Accounting Firm73Consolidated Balance Sheets as of December 31, 2014 and 201374Consolidated Statements of Operations for the years ended December 31, 2014, 2013, and 201275Consolidated Statements of Partners' Capital and Membership Interests for the years ended December 31, 2014, 2013, and 201276Consolidated Statements of Cash Flows for the years ended December 31, 2014, 2013, and 201279Notes to Consolidated Financial Statements8172Table of ContentsREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMTo the Board of Directors of Summit Midstream GP, LLC and the unitholders of Summit Midstream Partners, LPThe Woodlands, TexasWe have audited the accompanying consolidated balance sheets of Summit Midstream Partners, LP and subsidiaries (the "Partnership") as ofDecember 31, 2014 and 2013, and the related consolidated statements of operations, partners’ capital and membership interests, and cash flowsfor each of the three years in the period ended December 31, 2014. These financial statements are the responsibility of the Partnership'smanagement. Our responsibility is to express an opinion on these financial statements based on our audits.We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standardsrequire that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of materialmisstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. Anaudit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overallfinancial statement presentation. We believe that our audits provide a reasonable basis for our opinion.In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of Summit Midstream Partners,LP and subsidiaries as of December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in theperiod ended December 31, 2014, in conformity with accounting principles generally accepted in the United States of America.As discussed in Note 3 to the consolidated financial statements, the disclosures in the accompanying financial statements have beenretrospectively adjusted for a change in the presentation of reportable segments.The consolidated financial statements give retrospective effect to the Partnership’s acquisition of Bison Midstream, LLC and Red Rock Gathering,LLC from Summit Midstream Partners Holdings, LLC, as a combination of entities under common control, which has been accounted for in amanner similar to a pooling of interests, as described in Notes 1 and 15 to the consolidated financial statements.The Partnership acquired the Mountaineer Midstream gathering system on June 21, 2013 as described in Note 15 to the consolidated financialstatements.We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Partnership'sinternal control over financial reporting as of December 31, 2014, based on the criteria established in Internal Control - Integrated Framework (2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 2, 2015 expressed an unqualifiedopinion on the Partnership's internal control over financial reporting./s/ Deloitte & Touche LLPDallas, TexasMarch 2, 201573Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED BALANCE SHEETS December 31, 2014 2013 (In thousands)Assets Current assets: Cash and cash equivalents$26,428 $20,357Accounts receivable83,612 67,877Other current assets3,289 4,741Total current assets113,329 92,975Property, plant and equipment, net1,235,652 1,158,081Intangible assets, net466,866 502,177Goodwill61,689 115,888Other noncurrent assets17,338 14,618Total assets$1,894,874 $1,883,739 Liabilities and Partners' Capital Current liabilities: Trade accounts payable$12,852 $25,117Due to affiliate2,711 653Deferred revenue2,377 1,555Ad valorem taxes payable8,717 8,375Accrued interest18,858 12,144Other current liabilities11,939 11,729Total current liabilities57,454 59,573Long-term debt808,000 586,000Noncurrent liability, net (Note 5)5,577 6,374Deferred revenue55,239 29,683Other noncurrent liabilities1,715 372Total liabilities927,985 682,002Commitments and contingencies (Note 14) Common limited partner capital (34,427 units issued and outstanding at December 31, 2014 and 29,080units issued and outstanding at December 31, 2013)649,060 566,532Subordinated limited partner capital (24,410 units issued and outstanding at December 31, 2014 and 2013)293,153 379,287General partner interests (1,201 units issued and outstanding at December 31, 2014 and 1,091 unitsissued and outstanding at December 31, 2013)24,676 23,324Summit Investments' equity in contributed subsidiaries— 232,594Total partners' capital966,889 1,201,737Total liabilities and partners' capital$1,894,874 $1,883,739The accompanying notes are an integral part of these consolidated financial statements.74Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF OPERATIONS Year ended December 31, 2014 2013 2012 (In thousands, except per-unit amounts)Revenues: Gathering services and other fees$235,033 $205,346 $154,139Natural gas, NGLs and condensate sales and other96,597 88,606 20,476Amortization of favorable and unfavorable contracts(944) (1,032) (192)Total revenues330,686 292,920 174,423Costs and expenses: Cost of natural gas and NGLs58,094 44,233 3,224Operation and maintenance76,272 72,465 53,882General and administrative34,017 30,105 22,182Transaction costs730 2,841 2,025Depreciation and amortization82,990 69,962 36,674Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —Total costs and expenses312,249 219,719 117,987Other income1,189 5 9Interest expense(40,159) (19,173) (7,340)Affiliated interest expense— — (5,426)(Loss) Income before income taxes(20,533) 54,033 43,679Income tax expense(631) (729) (682)Net (loss) income$(21,164) $53,304 $42,997Less: net income attributable to the pre-IPO period (Note 1)— — 24,112Less: net income attributable to Summit Investments (Note 1)2,828 9,720 1,271Net (loss) income attributable to SMLP(23,992) 43,584 17,614Less: net (loss) income attributable to general partner, including IDRs3,125 1,035 352Net (loss) income attributable to limited partners$(27,117) $42,549 $17,262 (Loss) earnings per limited partner unit (Note 9): Common unit – basic$(0.49) $0.86 $0.35Common unit – diluted$(0.49) $0.86 $0.35Subordinated unit – basic and diluted$(0.44) $0.79 $0.35 Weighted-average limited partner units outstanding (Note 9): Common units – basic33,311 26,951 24,412Common units – diluted33,311 27,101 24,544Subordinated units – basic and diluted24,410 24,410 24,410 Cash distributions declared and paid per common unit$2.040 $1.725 The accompanying notes are an integral part of these consolidated financial statements.75Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL AND MEMBERSHIP INTERESTS Partners' capital SummitInvestments'equity incontributedsubsidiaries Limited partners General partner Membershipinterests Common Subordinated Total (In thousands)Membership interests, January 1,2012$— $— $— $— $640,818 $640,818Net income8,631 8,631 352 1,271 24,112 42,997SMLP LTIP unit-basedcompensation269 — — — — 269Class B membership interest unit-based compensation(186) — — — 1,793 1,607Net assets retained by thePredecessor— — — — (4,417) (4,417)Contribution of net assets to SMLP211,938 430,498 19,870 — (662,306) —Issuance of common units, net ofoffering costs262,382 — — — — 262,382Distribution of proceeds fromoffering(64,178) (58,960) — — — (123,138)Consolidation of Red RockGathering net assets— — — 206,694 — 206,694Cash advance from SummitInvestments to contributedsubsidiaries, net— — — 500 — 500Expenses paid by SummitInvestments on behalf ofcontributed subsidiaries— — — 2,536 — 2,536Partners' capital, December 31,2012418,856 380,169 20,222 211,001 — 1,030,24876Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL AND MEMBERSHIP INTERESTS(continued) Partners' capital SummitInvestments'equity incontributedsubsidiaries Limited partners General partner Common Subordinated Total (In thousands)Partners' capital, December 31, 2012418,856 380,169 20,222 211,001 1,030,248Net income22,311 20,238 1,035 9,720 53,304SMLP LTIP unit-based compensation2,999 — — — 2,999Distributions to unitholders(46,286) (42,107) (1,803) — (90,196)Consolidation of Bison Midstream net assets— — — 303,168 303,168Contribution from Summit Investments to BisonMidstream— — — 2,229 2,229Purchase of Bison Midstream47,936 — 978 (248,914) (200,000)Contribution of net assets from Summit Investments inexcess of consideration paid for Bison Midstream28,558 26,846 1,131 (56,535) —Issuance of units in connection with the MountaineerAcquisition98,000 — 2,000 — 100,000Class B membership interest unit-based compensation17 — — 490 507Repurchase of DFW Net Profits Interests(5,859) (5,859) (239) — (11,957)Cash advance from Summit Investments to contributedsubsidiaries, net— — — 738 738Capitalized interest allocated to Red Rock Gatheringprojects from Summit Investments— — — 496 496Expenses paid by Summit Investments on behalf ofcontributed subsidiaries— — — 10,149 10,149Capital expenditures paid by Summit Investments onbehalf of Red Rock Gathering— — — 52 52Partners' capital, December 31, 2013566,532 379,287 23,324 232,594 1,201,73777Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL AND MEMBERSHIP INTERESTS(continued) Partners' capital SummitInvestments'equity incontributedsubsidiaries Limited partners General partner Common Subordinated Total (In thousands)Partners' capital, December 31, 2013566,532 379,287 23,324 232,594 1,201,737Net (loss) income(15,948) (11,169) 3,125 2,828 (21,164)SMLP LTIP unit-based compensation4,696 — — — 4,696Distributions to unitholders(67,658) (49,796) (4,770) — (122,224)Tax withholdings on vested SMLP LTIP awards(656) — — — (656)Issuance of common units, net of offering costs197,806 — — — 197,806Contribution from general partner— — 4,235 — 4,235Purchase of Red Rock Gathering— — — (307,941) (307,941)Excess of purchase price over acquired carrying valueof Red Rock Gathering(37,910) (26,891) (1,323) 66,124 —Assets contributed to Red Rock Gathering from SummitInvestments2,426 1,722 85 — 4,233Cash advance from Summit Investments to contributedsubsidiaries— — — 1,982 1,982Expenses paid by Summit Investments on behalf ofcontributed subsidiaries— — — 4,413 4,413Repurchase of SMLP LTIP units(228) — — — (228)Partners' capital, December 31, 2014$649,060 $293,153 $24,676 $— $966,889The accompanying notes are an integral part of these consolidated financial statements.78Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF CASH FLOWS Year ended December 31, 2014 2013 2012 (In thousands)Cash flows from operating activities: Net (loss) income$(21,164) $53,304 $42,997Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization83,934 70,994 36,866Amortization of deferred loan costs2,770 2,246 1,458Unit-based compensation4,696 3,506 1,876Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —Purchase accounting adjustment(1,185) — —Pay-in-kind interest on promissory notes payable to Sponsors— — 5,426Changes in operating assets and liabilities: Accounts receivable(15,579) (18,605) (8,174)Due to/from affiliate(883) 1,427 (773)Trade accounts payable(970) (3,419) (2,536)Change in deferred revenue26,378 16,685 9,994Ad valorem taxes payable342 (11) 3,125Accrued interest6,714 12,128 (484)Other, net2,736 2,321 (383)Net cash provided by operating activities147,935 140,689 89,392 Cash flows from investing activities: Capital expenditures(128,325) (109,376) (77,296)Proceeds from asset sales325 585 —Acquisition of gathering systems(10,872) (210,000) —Acquisition of gathering systems from affiliate(305,000) (200,000) —Net cash used in investing activities(443,872) (518,791) (77,296)79Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF CASH FLOWS(continued) Year ended December 31, 2014 2013 2012 (In thousands)Cash flows from financing activities: Distributions to unitholders(122,224) (90,196) —Borrowings under revolving credit facility237,295 380,950 213,000Repayments under revolving credit facility(315,295) (294,180) (160,770)Deferred loan costs(5,320) (10,608) (3,344)Tax withholdings on vested SMLP LTIP awards(656) — —Proceeds from issuance of common units, net197,806 — 263,125Contribution from general partner4,235 2,229 —Cash advance from Summit Investments to contributed subsidiaries, net1,982 738 500Expenses paid by Summit Investments on behalf of contributed subsidiaries4,413 10,149 2,536Issuance of senior notes300,000 300,000 —Issuance of units to affiliate in connection with the Mountaineer Acquisition— 100,000 —Repurchase of equity-based compensation awards(228) (11,957) —Red Rock Gathering cash contributed by Summit Investments— — 1,097Repayment of promissory notes payable to Sponsors— — (209,230)Distributions to Sponsors— — (123,138)Net cash provided by (used in) financing activities302,008 387,125 (16,224)Net change in cash and cash equivalents6,071 9,023 (4,128)Cash and cash equivalents, beginning of period20,357 11,334 15,462Cash and cash equivalents, end of period$26,428 $20,357 $11,334 Supplemental Cash Flow Disclosures: Cash interest paid$31,524 $9,016 $8,283Less: capitalized interest3,172 4,705 2,784Interest paid (net of capitalized interest)$28,352 $4,311 $5,499 Cash paid for taxes$— $660 $650 Noncash Investing and Financing Activities: Capital expenditures in trade accounts payable (period-end accruals)$6,359 $16,470 $8,523Excess of purchase price over acquired carrying value of Red Rock Gathering66,124 — —Red Rock Gathering working capital adjustment(2,941) — —Assets contributed to Red Rock Gathering from Summit Investments4,233 — —Issuance of units to affiliate to partially fund the Bison Drop Down— 48,914 —Contribution of net assets from Summit Investments in excess of consideration paid for BisonMidstream— 56,535 —Capitalized interest allocated to Red Rock Gathering projects from Summit Investments— 496 —Capital expenditures paid by Summit Investments on behalf of Red Rock Gathering— 52 —Pay-in-kind interest on promissory notes payable to Sponsors— — 6,337Net assets retained by the Predecessor— — 4,417Deferred initial public offering costs in trade accounts payable— — 743The accompanying notes are an integral part of these consolidated financial statements.80Table of ContentsSUMMIT MIDSTREAM PARTNERS, LP AND SUBSIDIARIESNOTES TO AUDITED CONSOLIDATED FINANCIAL STATEMENTS1. ORGANIZATION, BUSINESS OPERATIONS AND BASIS OF PRESENTATIONOrganization. Summit Midstream Partners, LP ("SMLP" or the "Partnership"), a Delaware limited partnership, was formed in May 2012 and beganoperations in October 2012 in connection with its initial public offering ("IPO") of common limited partner units. SMLP is a growth-oriented limitedpartnership focused on developing, owning and operating midstream energy infrastructure assets that are strategically located in the coreproducing areas of unconventional resource basins, primarily shale formations, in North America.Effective with the completion of its IPO on October 3, 2012, SMLP had a 100% ownership interest in Summit Midstream Holdings, LLC ("SummitHoldings") which had a 100% ownership interest in both DFW Midstream Services LLC ("DFW Midstream") and Grand River Gathering, LLC("Grand River Gathering" or the "Legacy Grand River" system).On June 4, 2013, the Partnership acquired all of the membership interests of Bison Midstream, LLC ("Bison Midstream") from a wholly ownedsubsidiary of Summit Midstream Partners, LLC ("Summit Investments") (the "Bison Drop Down"), and thereby acquired certain associated naturalgas gathering pipeline, dehydration and compression assets in the Bakken Shale Play in Mountrail and Burke counties in North Dakota (the "BisonGas Gathering system").Prior to the Bison Drop Down, on February 15, 2013, Summit Investments acquired Bear Tracker Energy, LLC ("BTE"), which was subsequentlyrenamed Meadowlark Midstream Company, LLC ("Meadowlark Midstream"). The Bison Gas Gathering system was carved out from MeadowlarkMidstream in connection with the Bison Drop Down. As such, it was determined to be a transaction among entities under common control.On June 21, 2013, Mountaineer Midstream Company, LLC ("Mountaineer Midstream"), a newly formed, wholly owned subsidiary of the Partnership,acquired certain natural gas gathering pipeline and compression assets in the Marcellus Shale Play in Doddridge and Harrison counties, WestVirginia from an affiliate of MarkWest Energy Partners, L.P. ("MarkWest") (the "Mountaineer Acquisition"). In December 2013, MountaineerMidstream was merged into DFW Midstream.In October 2012, Summit Investments acquired ETC Canyon Pipeline, LLC ("Canyon") from a subsidiary of Energy Transfer Partners, L.P. TheCanyon gathering and processing assets were contributed to Red Rock Gathering Company, LLC ("Red Rock Gathering"), a newly formed, whollyowned subsidiary of Summit Investments. Red Rock Gathering gathers and processes natural gas and natural gas liquids in the Piceance Basin inwestern Colorado and eastern Utah. On March 18, 2014, SMLP acquired all of the membership interests of Red Rock Gathering from a subsidiaryof Summit Investments (the "Red Rock Drop Down"). As such, it was determined to be a transaction among entities under common control.Concurrent with the closing of the Red Rock Drop Down, SMLP contributed its interest in Red Rock Gathering to Grand River Gathering.Summit Investments is a Delaware limited liability company and the predecessor for accounting purposes of SMLP. Summit Investments wasformed and began operations in September 2009. Through August 2011, Summit Investments was wholly owned by Energy Capital Partners II,LLC and its parallel and co-investment funds (collectively, "Energy Capital Partners"). In August 2011, Energy Capital Partners sold an interest inSummit Investments to a subsidiary of GE Energy Financial Services, Inc. ("GE Energy Financial Services"). In June 2014, GE Energy FinancialServices exchanged 100% of its Class A membership interests in Summit Investments for a new class of membership interests, structured asClass C Preferred interests. As a result, GE Energy Financial Services is no longer a Class A member of Summit Investments. Consequently,we refer to Energy Capital Partners and GE Energy Financial Services as our "Sponsors" for the period from August 17, 2011 until June 17, 2014,and we refer to Energy Capital Partners as our sole "Sponsor" subsequent to June 2014.In March 2013, Summit Investments contributed the ownership of its SMLP common and subordinated units along with its 2% general partnerinterest in SMLP (including the incentive distribution rights ("IDRs") in respect of SMLP) to Summit Midstream Partners Holdings, LLC ("SMPHoldings") in exchange for a continuing 100% interest in SMP Holdings. As of December 31, 2014, Summit Investments, through a wholly ownedsubsidiary, held 5,293,571 SMLP common units, all of our subordinated units, all of our general partner units representing a 2% general partnerinterest in SMLP and all of our IDRs.SMLP is managed and operated by the board of directors and executive officers of Summit Midstream GP, LLC (the "general partner"). SummitInvestments, as the ultimate owner of our general partner, controls SMLP and has the right to appoint the entire board of directors of our generalpartner, including our independent directors. SMLP's81Table of Contentsoperations are conducted through, and our operating assets are owned by, various wholly-owned operating subsidiaries. However, neither SMLPnor its subsidiaries have any employees. The general partner has the sole responsibility for providing the personnel necessary to conduct SMLP'soperations, whether through directly hiring employees or by obtaining the services of personnel employed by others, including SummitInvestments. All of the personnel that conduct SMLP's business are employed by the general partner and its subsidiaries, but these individuals aresometimes referred to as our employees.References to the "Company," "we," or "our," when used for dates or periods ended on or after the IPO, refer collectively to SMLP and itssubsidiaries. References to the "Company," "we," or "our," when used for dates or periods ended prior to the IPO, refer collectively to SummitInvestments and its subsidiaries.Initial Public Offering. On October 3, 2012, SMLP completed its IPO and the following transactions occurred:•Summit Investments conveyed an interest in Summit Holdings to our general partner as a capital contribution;•our general partner conveyed its interest in Summit Holdings to SMLP in exchange for (i) a continuation of its 2% general partner interestin SMLP, represented by 996,320 general partner units, and (ii) SMLP incentive distribution rights, or IDRs;•Summit Investments conveyed its remaining interest in Summit Holdings to SMLP in exchange for (i) 10,029,850 common units (net ofthe impact of selling 1,875,000 common units to the public for cash in connection with the exercise of the underwriters’ option to purchaseadditional common units), representing a 20.1% limited partner interest in SMLP, (ii) 24,409,850 subordinated units, representing a 49.0%limited partner interest in SMLP, and (iii) the right to receive $88.0 million in cash as reimbursement for certain capital expenditures madewith respect to the contributed assets;•pursuant to its long-term incentive plan, SMLP granted 5,000 common units (in the aggregate) to two of its directors and 125,000 phantomunits, with distribution equivalent rights, to certain employees;•SMLP issued 14,375,000 common units to the public (including 1,875,000 additional common units sold out of the common units originallyallocated to Summit Investments) representing a 28.9% limited partner interest in SMLP; and•SMLP used the proceeds, net of underwriters’ fees, from the IPO of approximately $269.4 million to (i) repay $140.0 million outstandingunder the revolving credit facility; (ii) make cash distributions to Summit Investments of (a) $88.0 million to reimburse SummitInvestments for certain capital expenditures it incurred with respect to assets it contributed to us and (b) $35.1 million representing thefunds received in connection with the underwriters exercising their option to purchase additional common units; and (iii) pay IPO expensesof approximately $6.3 million.Business Operations. We provide natural gas gathering, treating and processing services pursuant to primarily long-term and fee-based, naturalgas gathering agreements with our customers. Our results are driven primarily by the volumes of natural gas that we gather, treat and processacross our systems. Our gathering and processing systems and the unconventional resource basins in which they operate as of December 31,2014 were as follows:•Mountaineer Midstream – the Appalachian Basin, which includes the Marcellus Shale formation in northern West Virginia;•Bison Midstream – the Williston Basin, which includes the Bakken and Three Forks shale formations in northwestern North Dakota;•DFW Midstream – the Fort Worth Basin, which includes the Barnett Shale formation in north-central Texas; and•Grand River Gathering – the Piceance Basin, which includes the Mesaverde formation and the Mancos and Niobrara shale formations inwestern Colorado and eastern Utah.Our operating subsidiaries are DFW Midstream (which includes the Mountaineer Midstream gathering system), Bison Midstream and Grand RiverGathering. All of our operating subsidiaries are midstream energy companies focused on the development, construction and operation of naturalgas gathering and processing systems.Basis of Presentation and Principles of Consolidation. We prepare our consolidated financial statements in accordance with accountingprinciples generally accepted in the United States of America ("GAAP"). These principles are established by the Financial Accounting StandardsBoard. We make estimates and assumptions that affect the reported amounts of assets and liabilities at the balance sheet dates, including fairvalue measurements,82Table of Contentsthe reported amounts of revenue and expense, and the disclosure of contingencies. Although management believes these estimates arereasonable, actual results could differ from its estimates.We conduct our operations in the midstream sector through four reportable segments:•the Marcellus Shale, which is served by Mountaineer Midstream;•the Williston Basin, which is served by Bison Midstream;•the Barnett Shale, which is served by DFW Midstream; and•the Piceance Basin, which is served by Grand River. Grand River is composed of the Legacy Grand River and Red Rock Gatheringsystems.The assets of our reportable segments consist of natural gas gathering and processing systems and related plant and equipment. Our reportablesegments reflect the way in which we internally report the financial information used to make decisions and allocate resources in connection withour operations.For the purposes of the consolidated financial statements, SMLP's results of operations reflect the Partnership's operations subsequent to the IPOand the results of the Predecessor for the period prior to the IPO. The consolidated financial statements also reflect the results of operations of: (i)Red Rock Gathering since October 23, 2012, (ii) Bison Midstream since February 16, 2013 and (iii) Mountaineer Midstream since June 22, 2013.SMLP recognized its acquisitions of Red Rock Gathering and Bison Midstream at Summit Investments' historical cost because the acquisitionswere executed by entities under common control. The excess of the purchase price paid by SMLP over Summit Investments' net investment inRed Rock Gathering was recognized as a reduction to partners' capital. The excess of Summit Investments' net investment in Bison Midstreamover the purchase price paid by SMLP was recognized as an addition to partners' capital. Due to the common control aspect, the Red Rock DropDown and the Bison Drop Down were accounted for by the Partnership on an “as-if pooled” basis for the periods during which common controlexisted. The consolidated financial statements include the assets, liabilities, and results of operations of SMLP or the Predecessor and theirrespective wholly owned subsidiaries. All intercompany transactions among the consolidated entities have been eliminated in consolidation.2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIESCash and Cash Equivalents. Cash and cash equivalents include temporary cash investments with original maturities of three months or less.Accounts Receivable. Accounts receivable relate to gathering and other services provided to our natural gas producer customers and othercounterparties. To the extent we doubt the collectability of our accounts receivable, we recognize an allowance for doubtful accounts. We did notexperience any non-payments during the three-year period ended December 31, 2014. As a result, we did not recognize an allowance for doubtfulaccounts as of December 31, 2014 and 2013.Other Current Assets. Other current assets primarily consist of the current portion of prepaid expenses that are charged to expense over theperiod of benefit or the life of the related contract.Property, Plant, and Equipment. We record property, plant, and equipment at historical cost of construction or fair value of the assets atacquisition. We capitalize expenditures that extend the useful life of an asset or enhance its productivity or efficiency from its original design overthe expected remaining period of use. For maintenance and repairs that do not add capacity or extend the useful life of an asset, we recognizeexpenditures as an expense as incurred. We capitalize project costs incurred during construction, including interest on funds borrowed to financethe construction of facilities, as construction in progress. Prior to the Red Rock Drop Down, a subsidiary of Summit Investments incurred interestexpense related to certain Red Rock Gathering capital projects. The associated interest expense was allocated to Red Rock Gathering as anoncash equity contribution and capitalized into the basis of the asset.We base an asset’s carrying value on estimates, assumptions and judgments for useful life and salvage value. We record depreciation on astraight-line basis over an asset’s estimated useful life. We base our estimates for useful life on various factors including age (in the case ofacquired assets), manufacturing specifications, technological advances, and historical data concerning useful lives of similar assets.Upon sale, retirement or other disposal, we remove the carrying value of an asset and its accumulated depreciation from our balance sheet andrecognize the related gain or loss, if any.Accrued capital expenditures are reflected in trade accounts payable.83Table of ContentsAsset Retirement Obligations. We record a liability for asset retirement obligations only if and when a future asset retirement obligation with adeterminable life is identified. As of December 31, 2014 and 2013, we evaluated whether any future asset retirement obligations existed. Foridentified asset retirement obligations, we then evaluated whether the expected retirement date and the related costs of retirement could beestimated. In performing this evaluation, we concluded that our natural gas gathering and processing assets have an indeterminate life becausethey are owned and will operate for an indeterminate future period when properly maintained. Because we did not have sufficient information toreasonably estimate the amount or timing of such obligations and we have no current plan to discontinue use of any significant assets, we did notprovide for any asset retirement obligations as of December 31, 2014 or 2013.Intangible Assets and Noncurrent Liability. Upon the acquisition of DFW Midstream, certain of our gas gathering contracts were deemed tohave above-market pricing structures while another was deemed to have pricing that was below market. We have recognized the contracts thatwere above market at acquisition as favorable gas gathering contracts. We have recognized the contract that was deemed to be below market asa noncurrent liability. We amortize these intangibles on a units-of-production basis over the estimated useful life of the contract. We define usefullife as the period over which the contract is expected to contribute directly or indirectly to our future cash flows. The related contracts have originalterms ranging from 10 years to 20 years. We recognize the amortization expense associated with these intangible assets and liability inamortization of favorable and unfavorable contracts.For our other gas gathering contracts, we amortize contract intangible assets over the period of economic benefit based upon the expectedrevenues over the life of the contract. The useful life of these contracts ranges from 10 years to 25 years. We recognize the amortization expenseassociated with these intangible assets in depreciation and amortization expense.We have right-of-way intangible assets associated with city easements and easements granted within existing rights-of-way. We amortize theseintangible assets over the shorter of the contractual term of the rights-of-way or the estimated useful life of the gathering system. The contractualterms of the rights-of-way range from 20 years to 30 years. The estimated useful life of our gathering systems is 30 years. We recognize theamortization expense associated with these intangible assets in depreciation and amortization expense.Impairment of Long-Lived Assets. We test assets for impairment when events or circumstances indicate that the carrying value of a long-livedasset may not be recoverable. The carrying value of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flowsexpected to result from its use and eventual disposition. If we conclude that an asset’s carrying value will not be recovered through future cashflows, we recognize an impairment loss on the long-lived asset equal to the amount by which the carrying value exceeds its fair value. Wedetermine fair value using an income approach in which we discount the asset’s expected future cash flows to reflect the risk associated withachieving the underlying cash flows. During the three-year period ended December 31, 2014, we concluded that none of our long-lived assets hadbeen impaired, except as discussed in Notes 4 and 5.Goodwill. Goodwill represents consideration paid in excess of the fair value of the net identifiable assets acquired in a business combination. Weevaluate goodwill for impairment annually on September 30. We also evaluate goodwill whenever events or circumstances indicate that it is morelikely than not that the fair value of a reporting unit is less than its carrying amount.We test goodwill for impairment using a two-step quantitative test. In the first step, we compare the fair value of the reporting unit to its carryingvalue, including goodwill. If the reporting unit’s fair value exceeds its carrying amount, we conclude that the goodwill of the reporting unit has notbeen impaired and no further work is performed. If we determine that the reporting unit’s carrying value exceeds its fair value, we proceed to steptwo. In step two, we compare the carrying value of the reporting unit to its implied fair value. If we determine that the carrying amount of a reportingunit's goodwill exceeds its implied fair value, we recognize the excess of the carrying value over the implied fair value as an impairment loss.Other Noncurrent Assets. Other noncurrent assets primarily consist of external costs incurred in connection with the issuance of our senior notesand the closing of our revolving credit facility and related amendments. We capitalize and then amortize these deferred loan costs over the life ofthe respective debt instrument. We recognize amortization of deferred loan costs in interest expense.Derivative Contracts. We have commodity price exposure related to our sale of the physical natural gas we retain from our DFW Midstreamcustomers, and our procurement of electricity to operate our electric-drive compression assets on the DFW Midstream system. Our gas gatheringagreements with our DFW Midstream customers permit us to retain a certain quantity of natural gas that we gather to offset the power costs weincur to operate our electric-84Table of Contentsdrive compression assets. We manage this direct exposure to natural gas and power prices through the use of forward power purchase contractswith wholesale power providers that require us to purchase a fixed quantity of power at a fixed heat rate based on prevailing natural gas prices onthe Waha Hub Index. Because we also sell our retainage gas at prices that are based on the Waha Hub Index, we have effectively fixed therelationship between our compression electricity expense and natural gas retainage sales.Accounting standards related to derivative instruments and hedging activities allow for normal purchase or sale elections and hedge accountingdesignations, which generally eliminate or defer the requirement for mark-to-market recognition in net income and thus reduce the volatility of netincome that can result from fluctuations in fair values. We have designated these contracts as normal under the normal purchase and saleexception under the accounting standards for derivatives. We do not enter into risk management contracts for speculative purposes.Fair Value of Financial Instruments. The fair-value-measurement standard under GAAP defines fair value as the price that would be received tosell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The standardcharacterizes inputs used in determining fair value according to a hierarchy that prioritizes those inputs based upon the degree to which the inputsare observable. The three levels of the fair value hierarchy are as follows:•Level 1. Inputs represent quoted prices in active markets for identical assets or liabilities;•Level 2. Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly (forexample, quoted market prices for similar assets or liabilities in active markets or quoted market prices for identical assets or liabilities inmarkets not considered to be active, inputs other than quoted prices that are observable for the asset or liability, or market-corroboratedinputs); and•Level 3. Inputs that are not observable from objective sources, such as management’s internally developed assumptions used in pricingan asset or liability (for example, an internally developed present value of future cash flows model that underlies management's fair valuemeasurement).The carrying amount of cash and cash equivalents, accounts receivable, and accounts payable reported on the balance sheet approximates fairvalue due to their short-term maturities.A summary of the estimated fair value of our debt financial instruments follows. December 31, 2014 December 31, 2013 Carrying value Estimatedfair value (Level 2) Carrying value Estimatedfair value (Level 2) (In thousands)Revolving credit facility$208,000 $208,000 $286,000 $286,0005.5% Senior notes300,000 281,750 — —7.5% Senior notes300,000 306,750 300,000 314,625The revolving credit facility’s carrying value on the balance sheet is its fair value due to its floating interest rate. The fair value for the senior notesis based on an average of nonbinding broker quotes as of December 31, 2014 and December 31, 2013. The use of different market assumptions orvaluation methodologies may have a material effect on the estimated fair value of the senior notes.Nonfinancial assets and liabilities initially measured at fair value include those acquired and assumed in connection with third-party businesscombinations.Commitments and Contingencies. We record accruals for loss contingencies when we determine that it is probable that a liability has beenincurred and that such economic loss can be reasonably estimated. Such determinations are subject to interpretations of current facts andcircumstances, forecasts of future events, and estimates of the financial impacts of such events.Revenue Recognition. We generate the majority of our revenue from the natural gas gathering, treating and processing services that we provideto our natural gas producer customers. We also generate revenue from our marketing of natural gas and NGLs. We realize revenues by receivingfees from our producer customers or by selling the residue natural gas and NGLs.We recognize revenue earned from fee-based gathering, treating and processing services in gathering services and other fees revenue. We alsoearn revenue from the sale of physical natural gas purchased from our customers85Table of Contentsunder percentage-of-proceeds and keep-whole arrangements. These revenues are recognized in natural gas, NGLs and condensate sales andother with corresponding expense recognition in cost of natural gas and NGLs. We sell substantially all of the natural gas that we retain from ourDFW Midstream customers to offset the power expenses of the electric-driven compression on the DFW Midstream system. We also sellcondensate retained from our gathering services at Grand River Gathering. Revenues from the retainage of natural gas and condensate arerecognized in natural gas, NGLs and condensate sales and other; the associated expense is included in operation and maintenance expense.Certain customers reimburse us for costs we incur on their behalf. We record costs incurred and reimbursed by our customers on a gross basis.We recognize revenue when all of the following criteria are met: (i) persuasive evidence of an exchange arrangement exists, (ii) delivery hasoccurred or services have been rendered, (iii) the price is fixed or determinable, and (iv) collectability is reasonably assured.We obtain access to natural gas and provide services principally under contracts that contain one or more of the following arrangements:•Fee-based arrangements. Under fee-based arrangements, we receive a fee or fees for one or more of the following services: natural gasgathering, treating, and/or processing. Fee-based arrangements include natural gas purchase arrangements pursuant to which wepurchase natural gas at the wellhead, or other receipt points, at a settled price at the delivery point less a specified amount, generally thesame as the fees we would otherwise charge for gathering of natural gas from the wellhead location to the delivery point. The marginsearned are directly related to the volume of natural gas that flows through the system.•Percent-of-proceeds arrangements. Under percent-of-proceeds arrangements, we generally purchase natural gas from producers at thewellhead, or other receipt points, gather the wellhead natural gas through our gathering system, treat the natural gas, process the naturalgas and/or sell the natural gas to a third party for processing. We then remit to our producers an agreed-upon percentage of the actualproceeds received from sales of the residue natural gas and NGLs. Certain of these arrangements may also result in returning all or aportion of the residue natural gas and/or the NGLs to the producer, in lieu of returning sales proceeds. The margins earned are directlyrelated to the volume of natural gas that flows through the system and the price at which we are able to sell the residue natural gas andNGLs.•Keep-Whole. Under keep-whole arrangements, after processing we keep 100% of the NGLs produced, and the processed natural gas, orvalue of the natural gas, is returned to the producer. Since some of the natural gas is used and removed during processing, wecompensate the producer for the amount of natural gas used and removed in processing by supplying additional natural gas or by payingan agreed-upon value for the natural gas utilized. These arrangements have commodity price exposure for us because the costs aredependent on the price of natural gas and the revenues are based on the price of NGLs.Certain of our natural gas gathering or processing agreements provide for a monthly, quarterly or annual MVC. Under these MVCs, our customersagree to ship a minimum volume of natural gas on our gathering systems or to pay a minimum monetary amount over certain periods during theterm of the MVC. A customer must make a shortfall payment to us at the end of the contract period if its actual throughput volumes are less thanits MVC for that period. Certain customers are entitled to utilize shortfall payments to offset gathering fees in one or more subsequent periods tothe extent that such customer's throughput volumes in subsequent periods exceed its MVC for that period.We recognize customer billings for obligations under their MVCs as revenue when the obligations are billable under the contract and the customerdoes not have the right to utilize shortfall payments to offset gathering fees in excess of its MVCs in subsequent periods.We record customer billings for obligations under their MVCs as deferred revenue when the customer has the right to utilize shortfall payments tooffset gathering or processing fees in subsequent periods. We recognize deferred revenue under these arrangements in revenue once allcontingencies or potential performance obligations associated with the related volumes have either (i) been satisfied through the gathering orprocessing of future excess volumes of natural gas, or (ii) expired (or lapsed) through the passage of time pursuant to the terms of the applicablenatural gas gathering agreement.We classify deferred revenue as a current liability for arrangements where the expiration of a customer's right to utilize shortfall payments is twelvemonths or less. We classify deferred revenue as noncurrent for arrangements where the expiration of the right to utilize shortfall payments and ourestimate of its potential utilization is more than 12 months.86Table of ContentsUnit-Based Compensation. For awards of unit-based compensation, we determine a grant date fair value and recognize the related compensationexpense, in the statement of operations over the vesting period of the respective awards.Income Taxes. Since we are structured as a partnership, we are generally not subject to federal and state income taxes, except as noted below.As a result, our unitholders or members are individually responsible for paying federal and state income taxes on their share of our taxable income.Net income or loss for financial statement purposes may differ significantly from taxable income reportable to our unitholders as a result ofdifferences between the tax basis and the financial reporting basis of assets and liabilities and the taxable income allocation requirements underour partnership agreement.In general, legal entities that are chartered, organized or conducting business in the state of Texas are subject to a franchise tax (the "TexasMargin Tax"). The Texas Margin Tax has the characteristics of an income tax because it is determined by applying a tax rate to a tax base thatconsiders both revenues and expenses. Our financial statements reflect provisions for these tax obligations.In 2014, the Company elected to apply changes to the determination of cost of goods sold for the Texas Margin Tax which permits the use ofaccelerated depreciation allowed for federal income tax purposes. As a result of this change, we recognized a $1.0 million deferred tax liability andcurrent income tax expense for the year ended December 31, 2014 was reduced by $0.3 million. The associated deferred tax liability of $1.3million is included in other noncurrent liabilities at December 31, 2014.Earnings Per Unit ("EPU"). We present earnings or loss per limited partner unit only for periods subsequent to the IPO. Prior to the IPO, SummitInvestments' members held membership interests and not units.We determine EPU by dividing the net income or loss that is attributed, in accordance with the net income and loss allocation provisions of thepartnership agreement, to the common and subordinated unitholders under the two-class method, after deducting the general partner's 2% interestin net income or loss and any payments to the general partner in connection with their IDRs, by the weighted-average number of common andsubordinated units outstanding during the years ended December 31, 2014 and 2013, and the period from October 1, 2012 to December 31, 2012.Diluted earnings or loss per limited partner unit reflects the potential dilution that could occur if securities or other agreements to issue commonunits, such as unit-based compensation, were exercised, settled or converted into common units. When it is determined that potential commonunits resulting from an award subject to performance or market conditions should be included in the diluted earnings per limited partner unitcalculation, the impact is reflected by applying the treasury stock method.Comprehensive Income. Comprehensive income is the same as net income or loss for all periods presented.Environmental Matters. We are subject to various federal, state and local laws and regulations relating to the protection of the environment.Although we believe that we are in material compliance with applicable environmental regulations, the risk of costs and liabilities are inherent inpipeline ownership and operation. Liabilities for loss contingencies, including environmental remediation costs, arising from claims, assessments,litigation, fines, and penalties and other sources are charged to expense when it is probable that a liability has been incurred and the amount of theassessment and/or remediation can be reasonably estimated. There are no such material liabilities in the accompanying financial statements atDecember 31, 2014 or 2013. However, we can provide no assurance that significant costs and liabilities will not be incurred by the Partnership inthe future. We are currently not aware of any material contingent liabilities that exist with respect to environmental matters.Recent Accounting Pronouncements. Accounting standard setters frequently issue new or revised accounting rules. We review newpronouncements to determine the impact, if any, on our financial statements. There are currently no recent pronouncements that have been issuedthat we believe will materially affect our financial statements, except as noted below.In May 2014, the Financial Accounting Standards Board released a joint revenue recognition standard, Accounting Standards Update No. 2014-09("ASC Update 2014-09"). Under ASC Update 2014-09, revenue will be recognized under a five-step model: (i) identify the contract with thecustomer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price toperformance obligations; and (v) recognize revenue when (or as) the partnership satisfies a performance obligation. This new standard is effectivefor fiscal years, and interim periods within those years, beginning after December 15, 2016, and interim and annual periods thereafter. Earlyadoption is not permitted. We are currently in the process of evaluating the impact of this update.87Table of Contents3. SEGMENT INFORMATIONIn the fourth quarter of 2014, we discontinued the aggregation of all of our operating segments. As of December 31, 2014, our reportable segmentsare the Marcellus Shale, the Williston Basin, the Barnett Shale and the Piceance Basin. The Piceance Basin reportable segment aggregates ourLegacy Grand River and Red Rock Gathering operating segments. Each of our reportable segments provide midstream services in a specificgeographic area. Corporate represents those revenues and expenses that are not specifically attributable to a reportable segment, not individuallyreportable, or that have not been allocated to our reportable segments. The accounting policies of the reportable segments and Corporate are thesame as those described in the summary of significant accounting policies.The following table presents assets by reportable segment as of December 31. December 31, 2014 2013 (In thousands)Assets: Marcellus Shale$243,884 $214,379Williston Basin311,041 337,610Barnett Shale428,935 431,578Piceance Basin872,437 876,969Total reportable segment assets1,856,297 1,860,536Corporate38,577 23,203Total assets$1,894,874 $1,883,739We assess the performance of our reportable segments based on segment adjusted EBITDA. We define segment adjusted EBITDA as totalrevenues less total costs and expenses; plus (i) other income excluding interest income, (ii) depreciation and amortization, (iii) adjustments relatedto MVC shortfall payments, (iv) impairments and (v) other noncash expenses or losses, less other noncash income or gains. Segment adjustedEBITDA excludes the effect of allocated corporate expenses, such as certain general and administrative expenses (including compensation-related expenses and professional services fees) interest expense and income tax expense.The following table presents segment adjusted EBITDA by reportable segment. Year ended December 31, 2014 2013 2012 (In thousands)Reportable segment adjusted EBITDA: Marcellus Shale$15,940 $6,333 Williston Basin20,422 16,865 Barnett Shale60,528 69,473 $63,670Piceance Basin107,953 80,941 53,179Total reportable segment adjusted EBITDA$204,843 $173,612 $116,84988Table of ContentsThe following table presents a reconciliation of income before income taxes to total reportable segment adjusted EBITDA. Year ended December 31, 2014 2013 2012 (In thousands)Reconciliation of Income Before Income Taxes to Segment Adjusted EBITDA: Income before income taxes$(20,533) $54,033 $43,679Add: Interest expense and affiliated interest expense40,159 19,173 12,766Depreciation and amortization82,990 69,962 36,674Amortization of favorable and unfavorable contracts944 1,032 192Allocated corporate expenses11,065 8,773 10,903Adjustments related to MVC shortfall payments26,565 17,025 10,768Unit-based compensation4,696 3,506 1,876Loss on asset sales, net442 113 —Goodwill impairment54,199 — —Long-lived asset impairment5,505 — —Less: Interest income4 5 9Impact of purchase price adjustments1,185 — —Total reportable segment adjusted EBITDA$204,843 $173,612 $116,84989Table of ContentsThe following table summarizes details by reportable segment for the years ended December 31. Year ended December 31, 2014 2013 2012 (In thousands)Revenues: Marcellus Shale$22,694 $9,588 Williston Basin62,454 50,735 Barnett Shale93,001 105,324 $93,453Piceance Basin152,537 127,273 81,961Total reportable segments330,686 292,920 175,414Corporate— — (991)Total revenues$330,686 $292,920 $174,423 Depreciation and amortization: Marcellus Shale$7,648 $3,998 Williston Basin18,132 16,057 Barnett Shale15,657 13,929 $12,078Piceance Basin40,965 35,527 24,310Total reportable segments82,402 69,511 36,388Corporate588 451 286Total depreciation and amortization$82,990 $69,962 $36,674 Other income: Marcellus Shale$— $— Williston Basin— — Barnett Shale— — $—Piceance Basin1,185 — —Total reportable segments1,185 — —Corporate4 5 9Total other income$1,189 $5 $9 Capital expenditures: Marcellus Shale$33,866 $1,822 Williston Basin46,927 26,381 Barnett Shale14,567 29,534 $39,588Piceance Basin32,505 50,709 36,899Total reportable segments127,865 108,446 76,487Corporate460 930 809Total capital expenditures$128,325 $109,376 $77,29690Table of Contents4. PROPERTY, PLANT, AND EQUIPMENT, NETDetails on property, plant, and equipment, net were as follows: Useful lives (Inyears) December 31, 2014 2013 (Dollars in thousands)Natural gas gathering and processing systems30 $881,235 $744,359Compressor stations and compression equipment30 410,906 380,000Construction in progressn/a 33,177 83,765Other4-15 27,345 21,304Total 1,352,663 1,229,428Less: accumulated depreciation 117,011 71,347Property, plant, and equipment, net $1,235,652 $1,158,081During the fourth quarter of 2014, we reviewed certain property, plant and equipment balances associated with a compressor station project on ourDFW Midstream system that was terminated and wrote off approximately $5.5 million of costs. The net impact of this action is reflected in long-lived asset impairment on the statement of operations. We also sold certain fixed assets during the fourth quarter of 2014. The net impact of thesetransactions is reflected in loss on asset sales, net on the statement of operations.Also during the fourth quarter of 2014, prices for natural gas, NGLs and crude oil continued to decline such that we identified a need to evaluatethe goodwill associated with the Bison Midstream system. In connection with this evaluation, we also evaluated the property, plant and equipmentand intangible assets associated with the Bison Midstream system for impairment and concluded that no impairment was necessary.Construction in progress is depreciated consistent with its applicable asset class once it is placed in service. Depreciation expense related toproperty, plant, and equipment and capitalized interest were as follows: Year ended December 31, 2014 2013 2012 (In thousands)Depreciation expense$45,734 $36,745 $22,422Capitalized interest3,172 4,705 2,7845. IDENTIFIABLE INTANGIBLE ASSETS, NONCURRENT LIABILITY AND GOODWILLIdentifiable Intangible Assets and Noncurrent Liability. Identifiable intangible assets and the noncurrent liability, which are subject toamortization, were as follows: December 31, 2014 Useful lives(In years) Gross carryingamount Accumulatedamortization Net (Dollars in thousands)Favorable gas gathering contracts18.7 $24,195 $(8,056) $16,139Contract intangibles12.5 426,464 (75,713) 350,751Rights-of-way24.2 112,393 (12,417) 99,976Total amortizable intangible assets $563,052 $(96,186) $466,866 Unfavorable gas gathering contract10.0 $10,962 $(5,385) $5,57791Table of Contents December 31, 2013 Useful lives(In years) Gross carryingamount Accumulatedamortization Net (Dollars in thousands)Favorable gas gathering contracts18.7 $24,195 $(6,315) $17,880Contract intangibles12.5 426,464 (43,158) 383,306Rights-of-way24.3 108,706 (7,715) 100,991Total amortizable intangible assets $559,365 $(57,188) $502,177 Unfavorable gas gathering contract10.0 $10,962 $(4,588) $6,374We recognized amortization expense in revenues as follows: Year ended December 31, 2014 2013 2012 (In thousands)Amortization expense – favorable gas gathering contracts$(1,741) $(2,078) $(1,715)Amortization expense – unfavorable gas gathering contract797 1,046 1,524Amortization of favorable and unfavorable contracts$(944) $(1,032) $(191)During the fourth quarter of 2014, prices for natural gas and crude oil continued to decline such that we identified a need to evaluate the goodwillassociated with the Bison Midstream system, as discussed below. In connection with this evaluation, we also evaluated the intangible assets andproperty, plant and equipment associated with the Bison Midstream system for impairment and concluded that no impairment was necessary.We recognized amortization expense in costs and expenses as follows: Year ended December 31, 2014 2013 2012 (In thousands)Amortization expense – contract intangibles$32,554 $28,654 $12,642Amortization expense – rights-of-way4,702 4,563 1,610The estimated aggregate annual amortization of intangible assets and noncurrent liability expected to be recognized as of December 31, 2014 foreach of the five succeeding fiscal years follows. Assets Liability (In thousands)2015$41,882 $698201641,846 924201740,697 1,047201840,301 1,123201940,247 95792Table of ContentsGoodwill. Recorded goodwill is related to the original acquisitions of the Grand River Gathering, Bison Midstream and Mountaineer Midstreamsystems. A rollforward of goodwill by reportable segment and in total follows. Piceance Basin Williston Basin Marcellus Shale Total (In thousands)Goodwill, December 31, 2012$45,478 $— $— $45,478Goodwill recognized in connection with the Bison Drop Down— 54,199 — 54,199Goodwill preliminarily recognized in connection with theMountaineer Acquisition— — 18,089 18,089Goodwill adjustment recognized in connection with finalizingaccounting for the Mountaineer Acquisition and other— — (1,878) (1,878)Goodwill, December 31, 201345,478 54,199 16,211 115,888Goodwill impairment (1)— (54,199) — (54,199)Goodwill, December 31, 2014$45,478 $— $16,211 $61,689__________(1) Balance represents the cumulative goodwill impairment as of December 31, 2014.Annual Impairment Evaluation. As discussed in Note 2, we evaluate goodwill for impairment annually on September 30. We performed our annualgoodwill impairment testing as of September 30, 2014 using a combination of the income and market approaches. The results thereof follow:•We determined that the fair value of the Grand River Gathering reporting unit, as included in the Piceance Basin reportable segment,substantially exceeded its carrying value, including goodwill as of September 30, 2014.•We determined that the fair value of the Mountaineer Midstream reporting unit, as included in the Marcellus Shale reportable segment,substantially exceeded its carrying value, including goodwill as of September 30, 2014.•We determined that the fair value of the Bison Midstream reporting unit, as included in the Williston Basin reportable segment, exceededits carrying value, including goodwill, as of September 30, 2014. However, it did not exceed its carrying value, including goodwill, by asubstantial amount.•Because the fair values of these reporting units exceeded their carrying values, including goodwill, there were no associated impairmentsof goodwill in connection with our 2014 annual goodwill impairment test.Fourth Quarter 2014 Goodwill Impairment. We also evaluate goodwill whenever events or circumstances indicate that it is more likely than not thatthe fair value of a reporting unit is less than its carrying value, including goodwill. During the latter part of the fourth quarter of 2014, the declines inprices for natural gas, NGLs and crude oil accelerated, negatively impacting producers in each of our areas of operation. As a result, weconsidered whether the goodwill associated with our Grand River Gathering, Mountaineer Midstream and Bison Midstream reporting units couldhave been impaired. Our assessments related to Grand River Gathering and Mountaineer Midstream did not result in an indication that theassociated goodwill had been impaired.Our assessment related to the Bison Midstream reporting unit did result in an indication that the associated goodwill could have been impaired. Inconnection therewith, we noted that a key Bison Midstream customer announced that it was delaying its previously announced drilling plans. Thecombined impact of (i) the price declines on revenues under its percent-of proceeds contracts and (ii) the Partnership's reduction in its forecastedvolume assumption in response to the decline in our customer’s drilling plans increased the likelihood that the goodwill associated with the BisonMidstream reporting unit was impaired. As such, we concluded that a triggering event occurred during the fourth quarter of 2014 requiring that wetest the goodwill associated with the Bison Midstream reporting unit for impairment.To estimate the fair value of the Bison Midstream reporting unit, we utilized two valuation methodologies: the market approach and the incomeapproach. Both of these approaches incorporate significant estimates and assumptions to calculate enterprise fair value for a reporting unit. Themost significant estimates and assumptions inherent within these two valuation methodologies are:•determination of the weighted-average cost of capital;93Table of Contents•the selection of guideline public companies;•market multiples;•weighting of the income and market approaches;•growth rates;•commodity prices; and•the expected levels of throughput volume gathered.Changes in the above and other assumptions could materially affect the estimated amount of fair value for any of our reporting units.The results of our step one goodwill impairment testing indicated that the fair value of the Bison Midstream reporting unit was below its carryingvalue, including goodwill. This result required that we perform step two of the goodwill impairment test. To perform step two, we first determinedthe fair values of the identifiable assets and liabilities. Significant assumptions utilized in the determination of the fair value of each reporting unit'sindividual assets and liabilities included the determination of discount rate and contributing asset charge utilized in our contract intangibles,expected levels of throughput volume and associated capital expenditures and commodity prices.Our preliminary estimates of the fair values of the identified assets and liabilities calculated in the step two testing of the Bison Midstreamreporting unit indicated that all of the associated goodwill had been impaired. As such, we recorded an estimated goodwill impairment of $54.2million. This amount represents our best estimate of impairment pending the finalization of the fair value calculations, which we expect to finalizein the first quarter of 2015.Our impairment determinations, in the context of (i) our annual impairment evaluation and (ii) our fourth quarter 2014 evaluation, involved significantassumptions and judgments, as discussed above. Differing assumptions regarding any of these inputs could have a significant effect on thevarious valuations. As such, the fair value measurements utilized within these models are classified as non-recurring Level 3 measurements in thefair value hierarchy because they are not observable from objective sources. Due to the volatility of the inputs used, we cannot predict thelikelihood of any future impairment.6. DEFERRED REVENUEThe majority of our gas gathering agreements provide for a monthly, quarterly or annual MVC from our customers. If a customer's actualthroughput volumes are less than its MVC for the applicable period, it must make a shortfall payment to us at the end of that contract month,quarter or year, as applicable. The amount of the shortfall payment is based on the difference between the actual throughput volume shipped orprocessed for the applicable period and the MVC for the applicable period, multiplied by the applicable gathering or processing fee. To the extentthat a customer's actual throughput volumes are above or below its MVC for the applicable period, however, many of our gas gathering agreementscontain provisions that can reduce or delay the cash flows that we expect to receive from our MVCs. These provisions include the following:•To the extent that a customer's throughput volumes are less than its MVC for the applicable period and the customer makes a shortfallpayment, it may be entitled to an offset in one or more subsequent periods to the extent that its throughput volumes in subsequent periodsexceed its MVC for those periods. In such a situation, we would not receive gathering fees on throughput in excess of a customer'smonthly or annual MVC (depending on the terms of the specific gas gathering agreement) to the extent that the customer had made ashortfall payment with respect to one or more preceding months or years (as applicable).•To the extent that a customer's throughput volumes exceed its MVC in the applicable period, it may be entitled to apply the excessthroughput against its aggregate MVC, thereby reducing the period for which its annual MVC applies. As a result of this mechanism, theweighted-average remaining period for which our MVCs apply will be less than the weighted-average of the original stated contract terms ofour MVCs.•To the extent that certain of our customers' throughput volumes exceed its MVC for the applicable period, there is a crediting mechanismthat allows the customer to build a bank of credits that it can utilize in the future to reduce shortfall payments owed in subsequent periods,subject to expiration if there is no shortfall in subsequent periods. The period over which this credit bank can be applied to future shortfallpayments varies, depending on the particular gas gathering agreement.94Table of ContentsA rollforward of current deferred revenue follows. Williston Basin BarnettShale PiceanceBasin Totalcurrent (In thousands)Current deferred revenue, January 1, 2012$— $— $— $—Additions— 865 — 865Current deferred revenue, December 31, 2012— 865 — 865Additions— 1,555 — 1,555Less: revenue recognized due to expiration— 865 — 865Current deferred revenue, December 31, 2013— 1,555 — 1,555Additions— 2,610 — 2,610Less: revenue recognized due to expiration— 1,555 — 1,555Less: revenue recognized due to usage— 233 — 233Current deferred revenue, December 31, 2014$— $2,377 $— $2,377A rollforward of noncurrent deferred revenue follows. Williston Basin BarnettShale PiceanceBasin Total noncurrent (In thousands)Noncurrent deferred revenue, January 1, 2012$— $— $1,770 $1,770Additions— — 9,129 9,129Noncurrent deferred revenue, December 31, 2012— — 10,899 10,899Additions(1)6,389 — 12,395 18,784Noncurrent deferred revenue, December 31, 20136,389 — 23,294 29,683Additions10,743 — 14,813 25,556Noncurrent deferred revenue, December 31, 2014$17,132 $— $38,107 $55,239__________(1) Noncurrent includes amounts recognized in connection with the Bison Drop Down.As of December 31, 2014, accounts receivable included $13.1 million of shortfall billings related to MVC arrangements that can be utilized to offsetgathering fees in subsequent periods. Noncurrent deferred revenue at December 31, 2014 represents amounts that provide certain customers theability to offset their gathering fees over a period up to seven years to the extent that the customer's throughput volumes exceeds its MVC.7. LONG-TERM DEBTLong-term debt consisted of the following: December 31, 2014 2013 (In thousands)Variable rate senior secured revolving credit facility (2.67% at December 31, 2014 and 2.42% at December31, 2013) due November 2018$208,000 $286,0005.50% Senior unsecured notes due August 2022300,000 —7.50% Senior unsecured notes due July 2021300,000 300,000Total long-term debt$808,000 $586,00095Table of ContentsThe aggregate amount of our debt maturities during each of the years after December 31, 2014 are as follows: Long-term debt (In thousands)2015$—2016—2017—2018208,0002019—Thereafter600,000Total long-term debt$808,000Revolving Credit Facility. We have a senior secured revolving credit facility which allows for revolving loans, letters of credit and swingline loans(the "revolving credit facility"). The revolving credit facility has a $700.0 million borrowing capacity, matures in November 2018, and includes a$200.0 million accordion feature. It is secured by the membership interests of Summit Holdings and those of its subsidiaries. Substantially all ofSummit Holdings' and its subsidiaries' assets are pledged as collateral under the revolving credit facility. The revolving credit facility, and SummitHoldings' obligations, are guaranteed by SMLP and each of its subsidiaries.Borrowings under the revolving credit facility bear interest at the London Interbank Offered Rate ("LIBOR") or an Alternate Base Rate ("ABR") plusan applicable margin ranging from 0.75% to 1.75% for ABR borrowings and 1.75% to 2.75% for LIBOR borrowings, with the commitment feeranging from 0.30% to 0.50% in each case based on our relative leverage at the time of determination. At December 31, 2014, the applicablemargin under LIBOR borrowings was 2.50%, the interest rate was 2.67% and the unused portion of the revolving credit facility totaled $492.0million (subject to a commitment fee of 0.500%).The revolving credit agreement contains affirmative and negative covenants customary for credit facilities of its size and nature that, among otherthings, limit or restrict the ability to: (i) incur additional debt; (ii) make investments; (iii) engage in certain mergers, consolidations, acquisitions orsales of assets; (iv) enter into swap agreements and power purchase agreements; (v) enter into leases that would cumulatively obligate paymentsin excess of $30.0 million over any 12-month period; and (vi) prohibits the payment of distributions by Summit Holdings if a default then exists orwould result therefrom, and otherwise limits the amount of distributions Summit Holdings can make. In addition, the revolving credit facilityrequires Summit Holdings to maintain a ratio of consolidated trailing 12-month earnings before interest, income taxes, depreciation andamortization ("EBITDA," as defined in the credit agreement) to net interest expense of not less than 2.5 to 1.0 (as defined in the credit agreement)and a ratio of total net indebtedness to consolidated trailing 12-month EBITDA of not more than 5.0 to 1.0, or not more than 5.5 to 1.0 for up to 270days following certain acquisitions.As of December 31, 2014, we were in compliance with the covenants in the revolving credit facility. There were no defaults or events of defaultduring the year ended December 31, 2014.Senior Notes. On July 15, 2014, Summit Holdings and its 100% owned finance subsidiary, Summit Midstream Finance Corp. ("Finance Corp.,"together with Summit Holdings, the "Co-Issuers"), co-issued $300.0 million of 5.50% senior unsecured notes maturing August 15, 2022 (the "5.5%senior notes"). In June 2013, the Co-Issuers co-issued $300.0 million of 7.50% senior unsecured notes maturing July 1, 2021 (the "7.5% seniornotes").SMLP and all of its subsidiaries other than the Co-Issuers (the "Guarantors") have fully and unconditionally and jointly and severally guaranteedthe 5.5% senior notes and the 7.5% senior notes. SMLP has no independent assets or operations. Summit Holdings has no assets or operationsother than its ownership of its wholly owned subsidiaries and activities associated with its borrowings under the revolving credit facility, the 5.5%senior notes and the 7.5% senior notes. Finance Corp. has no independent assets or operations and was formed for the sole purpose of being aco-issuer of certain of Summit Holdings' indebtedness, including the 5.5% senior notes and the 7.5% senior notes. There are no significantrestrictions on the ability of SMLP or Summit Holdings to obtain funds from its subsidiaries by dividend or loan.5.5% Senior Notes. We will pay interest on the 5.5% senior notes semi-annually in cash in arrears on February 15 and August 15 of each year,commencing February 15, 2015. The 5.5% senior notes are senior, unsecured obligations and rank equally in right of payment with all of ourexisting and future senior obligations. The 5.5% senior notes are effectively subordinated in right of payment to all of our secured indebtedness, tothe extent of the96Table of Contentscollateral securing such indebtedness. We used the proceeds from the issuance of the 5.5% senior notes to repay a portion of the balanceoutstanding under our revolving credit facility.At any time prior to August 15, 2017, the Co-Issuers may redeem up to 35% of the aggregate principal amount of the 5.5% senior notes at aredemption price of 105.500% of the principal amount of the 5.5% senior notes, plus accrued and unpaid interest, if any, to the redemption date,with an amount not greater than the net cash proceeds of certain equity offerings. On and after August 15, 2017, the Co-Issuers may redeem all orpart of the 5.5% senior notes at a redemption price of 104.125% (with the redemption premium declining ratably each year to 100.000% on andafter August 15, 2020), plus accrued and unpaid interest, if any. Debt issuance costs of $5.1 million, recognized in other noncurrent assets, arebeing amortized over the life of the senior notes.The 5.5% senior notes' indenture restricts SMLP’s and the Co-Issuers’ ability and the ability of certain of their subsidiaries to: (i) incur additionaldebt or issue preferred stock; (ii) make distributions, repurchase equity or redeem subordinated debt; (iii) make payments on subordinatedindebtedness; (iv) create liens or other encumbrances; (v) make investments, loans or other guarantees; (vi) sell or otherwise dispose of a portionof their assets; (vii) engage in transactions with affiliates; and (viii) make acquisitions or merge or consolidate with another entity. Thesecovenants are subject to a number of important exceptions and qualifications. At any time when the senior notes are rated investment grade byeach of Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services and no default or event of default under the indenture hasoccurred and is continuing, many of these covenants will terminate.The 5.5% senior notes' indenture provides that each of the following is an event of default: (i) default for 30 days in the payment when due ofinterest on the 5.5% senior notes; (ii) default in the payment when due of the principal of, or premium, if any, on the 5.5% senior notes; (iii) failureby the Co-Issuers or SMLP to comply with certain covenants relating to mergers and consolidations, change of control or asset sales; (iv) failureby SMLP for 180 days after notice to comply with certain covenants relating to the filing of reports with the SEC; (v) failure by the Co-Issuers orSMLP for 30 days after notice to comply with any of the other agreements in the indenture; (vi) specified defaults under any mortgage, indenture orinstrument under which there may be issued or by which there may be secured or evidenced any indebtedness for money borrowed by SMLP orany of its restricted subsidiaries (or the payment of which is guaranteed by SMLP or any of its restricted subsidiaries); (vii) failure by SMLP or anyof its restricted subsidiaries to pay certain final judgments aggregating in excess of $20.0 million; (viii) except as permitted by the indenture, anyguarantee of the senior notes shall cease for any reason to be in full force and effect or any guarantor, or any person acting on behalf of anyguarantor, shall deny or disaffirm its obligations under its guarantee of the senior notes; and (ix) certain events of bankruptcy, insolvency orreorganization described in the indenture. In the case of an event of default as described in the foregoing clause (ix), all outstanding 5.5% seniornotes will become due and payable immediately without further action or notice. If any other event of default occurs and is continuing, the trusteeor the holders of at least 25% in principal amount of the then outstanding 5.5% senior notes may declare all the 5.5% senior notes to be due andpayable immediately.As of December 31, 2014, we were in compliance with the covenants for the 5.5% senior notes. There were no defaults or events of default for the5.5% senior notes during the period from issuance through December 31, 2014.7.5% Senior Notes. The 7.5% senior notes were sold within the United States only to qualified institutional buyers in reliance on Rule 144A underthe Securities Act of 1933, as amended (the "Securities Act"), and outside the United States only to non-U.S. persons in reliance on Regulation Sunder the Securities Act.We pay interest on the 7.5% senior notes semi-annually in cash in arrears on January 1 and July 1 of each year. The 7.5% senior notes aresenior, unsecured obligations and rank equally in right of payment with all of our existing and future senior obligations. The 7.5% senior notes areeffectively subordinated in right of payment to all of our secured indebtedness, to the extent of the collateral securing such indebtedness. We usedthe proceeds from the issuance of the 7.5% senior notes to repay a portion of the balance outstanding under our revolving credit facility.Effective as of April 7, 2014, all of the holders of our 7.5% senior notes exchanged their unregistered senior notes and the guarantees of thosenotes for registered notes and guarantees. The terms of the registered senior notes are substantially identical to the terms of the unregisteredsenior notes, except that the transfer restrictions, registration rights and provisions for additional interest relating to the unregistered senior notesdo not apply to the registered senior notes.At any time prior to July 1, 2016, the Co-Issuers may redeem up to 35% of the aggregate principal amount of the 7.5% senior notes at aredemption price of 107.500% of the principal amount of the 7.5% senior notes, plus accrued and unpaid interest, if any, to the redemption date,with an amount not greater than the net cash proceeds of certain equity offerings. On and after July 1, 2016, the Co-Issuers may redeem all or partof the 7.5% senior notes at a97Table of Contentsredemption price of 105.625% (with the redemption premium declining ratably each year to 100.000% on and after July 1, 2019), plus accrued andunpaid interest, if any. Debt issuance costs of $7.4 million, recognized in other noncurrent assets, are being amortized over the life of the seniornotes.The 7.5% senior notes indenture restricts SMLP’s and the Co-Issuers’ ability and the ability of certain of their subsidiaries to: (i) incur additionaldebt or issue preferred stock; (ii) make distributions, repurchase equity or redeem subordinated debt; (iii) make payments on subordinatedindebtedness; (iv) create liens or other encumbrances; (v) make investments, loans or other guarantees; (vi) sell or otherwise dispose of a portionof their assets; (vii) engage in transactions with affiliates; and (viii) make acquisitions or merge or consolidate with another entity. Thesecovenants are subject to a number of important exceptions and qualifications. At any time when the senior notes are rated investment grade byeach of Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services and no default or event of default under the indenture hasoccurred and is continuing, many of these covenants will terminate.The 7.5% senior notes indenture provides that each of the following is an event of default: (i) default for 30 days in the payment when due ofinterest on the 7.5% senior notes; (ii) default in the payment when due of the principal of, or premium, if any, on the 7.5% senior notes; (iii) failureby the Co-Issuers or SMLP to comply with certain covenants relating to mergers and consolidations, change of control or asset sales; (iv) failureby SMLP for 180 days after notice to comply with certain covenants relating to the filing of reports with the SEC; (v) failure by the Co-Issuers orSMLP for 30 days after notice to comply with any of the other agreements in the indenture; (vi) specified defaults under any mortgage, indenture orinstrument under which there may be issued or by which there may be secured or evidenced any indebtedness for money borrowed by SMLP orany of its restricted subsidiaries (or the payment of which is guaranteed by SMLP or any of its restricted subsidiaries); (vii) failure by SMLP or anyof its restricted subsidiaries to pay certain final judgments aggregating in excess of $20.0 million; (viii) except as permitted by the indenture, anyguarantee of the senior notes shall cease for any reason to be in full force and effect or any guarantor, or any person acting on behalf of anyguarantor, shall deny or disaffirm its obligations under its guarantee of the 7.5% senior notes; and (ix) certain events of bankruptcy, insolvency orreorganization described in the indenture. In the case of an event of default as described in the foregoing clause (ix), all outstanding 7.5% seniornotes will become due and payable immediately without further action or notice. If any other event of default occurs and is continuing, the trusteeor the holders of at least 25% in principal amount of the then outstanding 7.5% senior notes may declare all the 7.5% senior notes to be due andpayable immediately.As of December 31, 2014, we were in compliance with the covenants for the 7.5% senior notes. There were no defaults or events of default duringthe year ended December 31, 2014.8. PARTNERS' CAPITAL AND MEMBERSHIP INTERESTSPartners' CapitalSMLP was formed in May 2012. Prior to the closing of its IPO on October 3, 2012, SMLP had no outstanding common or subordinated units oroperations.98Table of ContentsA rollforward of the number of common limited partner, subordinated limited partner and general partner units follows. Common Subordinated General partner TotalUnits, January 1, 2012— — — —Units issued to the public in connection with the IPO14,380,000 — — 14,380,000Units issued to Summit Investments in connection with the IPO10,029,850 24,409,850 996,320 35,436,020Units issued under SMLP LTIP2,577 — — 2,577Units, December 31, 201224,412,427 24,409,850 996,320 49,818,597Units issued to a subsidiary of Summit Investments in connectionwith the Bison Drop Down (1)1,553,849 — 31,711 1,585,560Units issued to a subsidiary of Summit Investments in connectionwith the Mountaineer Acquisition (1)3,107,698 — 63,422 3,171,120Units issued under SMLP LTIP5,892 — — 5,892Units, December 31, 201329,079,866 24,409,850 1,091,453 54,581,169Units issued in connection with the March Equity 2014 Offering (1)5,300,000 — 108,337 5,408,337Units issued under SMLP LTIP (1)(2)46,647 — 861 47,508Units, December 31, 201434,426,513 24,409,850 1,200,651 60,037,014__________(1) Including issuance to general partner in connection with contributions made to maintain 2% general partner interest.(2) Units issued under SMLP LTIP in 2014 is net of 14,300 units withheld to meet minimum statutory tax withholding requirements.In March 2014, we completed an underwritten public offering of 10,350,000 common units at a price of $38.75 per unit, of which 5,300,000common units were offered by the Partnership and 5,050,000 common units were offered by a subsidiary of Summit Investments, pursuant to aneffective shelf registration statement on Form S-3 previously filed with the SEC. Concurrently, our general partner made a capital contribution tomaintain its 2% general partner interest in SMLP. We used the proceeds from the primary offering and the general partner capital contribution tofund a portion of the purchase of Red Rock Gathering.In September 2014, a subsidiary of Summit Investments completed an underwritten public offering of 4,347,826 SMLP common units pursuant toan effective shelf registration statement on Form S-3 previously filed with the SEC. We did not receive any proceeds from this offering.See Notes 1, 10 and 15 for information on units issued (i) in connection with our IPO, (ii) under the SMLP LTIP plan, and (iii) to fund acquisitions.Red Rock Drop Down. On March 18, 2014, SMLP acquired 100% of the membership interests in Red Rock Gathering from a subsidiary ofSummit Investments. In exchange for its $241.8 million net investment in Red Rock Gathering, SMLP paid total cash consideration of $307.9million, including working capital adjustments. As a result of the excess of the purchase price over acquired carrying value of Red Rock Gathering,SMLP recognized a capital distribution to Summit Investments. The calculation of the capital distribution and its allocation to partners' capitalfollow (in thousands).Summit Investments' net investment in Red Rock Gathering $241,817Total cash consideration paid to a subsidiary of Summit Investments 307,941Excess of purchase price over acquired carrying value of Red Rock Gathering $(66,124) Allocation of capital distribution: General partner interest$(1,323) Common limited partner interest(37,910) Subordinated limited partner interest(26,891) Partners' capital allocation $(66,124)99Table of ContentsBison Drop Down. On June 4, 2013, a subsidiary of Summit Investments entered into a purchase and sale agreement with SMLP whereby SMLPacquired the Bison Gas Gathering system. In exchange for its $305.4 million net investment in Bison Midstream, SMLP paid Summit Investmentsand the general partner total cash and unit consideration of $248.9 million. As a result of the contribution of net assets in excess of consideration,SMLP recognized a capital contribution from Summit Investments. The details of total cash and unit consideration as well as the calculation of thecapital contribution and its allocation to partners' capital follow (dollars in thousands).Summit Investments' net investment in Bison Midstream $305,449Aggregate cash paid to Summit Investments$200,000 Issuance of 1,553,849 SMLP common units to Summit Investments47,936 Issuance of 31,711 SMLP general partner units to the general partner978 Total consideration 248,914Summit Investments' contribution of net assets in excess of consideration $56,535 Allocation of capital contribution: General partner interest$1,131 Common limited partner interest28,558 Subordinated limited partner interest26,846 Partners' capital allocation $56,535The number of units issued to Summit Investments and the general partner in connection with the Bison Drop Down was calculated based on anassumed equity issuance of $50.0 million and the five-day volume-weighted-average price as of June 3, 2013 of $31.53 per unit. The units werethen valued as of June 4, 2013 (the date of closing) using the June 4, 2013 closing price of SMLP's units of $30.85.The general partner interest allocation was calculated based on a 2% general partner interest in the contribution of assets in excess ofconsideration given by SMLP to Summit Investments. Common and subordinated limited partner interests allocations were calculated as theirrespective percentages of total limited partner capital applied to the balance of the contribution by Summit Investments after giving effect to thegeneral partner allocation.Mountaineer Acquisition. We completed the acquisition of Mountaineer Midstream on June 21, 2013. The purchase price of $210.0 million wasfunded with $110.0 million of borrowings under SMLP’s revolving credit facility and the issuance for cash of $100.0 million of SMLP common unitsand general partner interests to a subsidiary of Summit Investments and the general partner. The allocation and valuation of units issued topartially fund the Mountaineer Acquisition follow (dollars in thousands).Issuance of 3,107,698 SMLP common units to Summit Investments$98,000Issuance of 63,422 SMLP general partner units to the general partner2,000Issuance of units in connection with the Mountaineer Acquisition$100,000Pursuant to a unit purchase agreement, the number of units issued to Summit Investments and the general partner in connection with theMountaineer Acquisition was calculated based on an assumed equity issuance of $100.0 million and the five-day volume-weighted-average priceas of June 3, 2013 of $31.53 per unit.Subordination. The principal difference between our common units and subordinated units is that in any quarter during the subordination period,holders of the subordinated units are not entitled to receive any distribution of available cash until the common units have received the minimumquarterly distribution ("MQD," as defined below) plus any arrearages in the payment of the MQD from prior quarters. Subordinated units will notaccrue arrearages for unpaid quarterly distributions or quarterly distributions less than the MQD. If we do not pay the MQD on our common units,our common unitholders will not be entitled to receive such payments in the future except during the subordination period. To the extent we haveavailable cash in any future quarter during the subordination period in excess of the amount necessary to pay the MQD to holders of our commonunits, we will use this excess available cash to pay any distribution arrearages related to prior quarters before any cash distribution is made toholders of subordinated units. When the subordination period ends, all subordinated units will convert into common units on a one-for-one basis,and thereafter no common units will be entitled to arrearages.The subordination period will end on the first business day after we have earned and paid at least $1.60 (the MQD on an annualized basis) on eachoutstanding common unit and subordinated unit and the corresponding distribution100Table of Contentson the general partner's 2.0% interest for each of three consecutive, non-overlapping four-quarter periods ending on or after December 31, 2015.Cash Distribution PolicyOur cash distribution policy, as expressed in our partnership agreement, may not be modified or repealed without amending our partnershipagreement. Our partnership agreement requires that we distribute all of our available cash (as defined below) within 45 days after the end of eachquarter to unitholders of record on the applicable record date. Our policy is to distribute to our unitholders an amount of cash each quarter that isequal to or greater than the MQD stated in our partnership agreement.Minimum Quarterly Distribution. Our partnership agreement generally requires that we make a minimum quarterly distribution to the holders ofour common units and subordinated units of $0.40 per unit, or $1.60 on an annualized basis, to the extent we have sufficient cash from ouroperations after the establishment of cash reserves and the payment of costs and expenses, including reimbursements of expenses to our generalpartner. The amount of distributions paid under our policy is subject to fluctuations based on the amount of cash we generate from our businessand the decision to make any distribution is determined by our general partner, taking into consideration the terms of our partnership agreement.Definition of Available Cash. Available cash generally means, for any quarter, all cash on hand at the end of that quarter:•less the amount of cash reserves established by our general partner at the date of determination of available cash for that quarter to:•provide for the proper conduct of our business (including reserves for our future capital expenditures and anticipated future debt servicerequirements);•comply with applicable law, any of our debt instruments or other agreements; or•provide funds for distributions to our unitholders and to our general partner for any one or more of the next four quarters (provided that ourgeneral partner may not establish cash reserves for distributions unless it determines that the establishment of reserves will not preventus from distributing the minimum quarterly distribution on all common units and any cumulative arrearages on such common units for thecurrent quarter);•plus, if our general partner so determines, all or any portion of the cash on hand on the date of determination of available cash for the quarterresulting from working capital borrowings made subsequent to the end of such quarter.General Partner Interest and Incentive Distribution Rights. Our general partner is entitled to 2.0% of all distributions that we make prior to ourliquidation. Our general partner has the right, but not the obligation, to contribute a proportionate amount of capital to us to maintain its currentgeneral partner interest. Our general partner's initial 2.0% interest in our distributions will be reduced if we issue additional units in the future andour general partner does not contribute a proportionate amount of capital to us to maintain its 2.0% general partner interest.Our general partner also currently holds incentive distribution rights that entitle it to receive increasing percentage allocations, up to a maximum of50.0% (as set forth in the chart below), of the cash we distribute from operating surplus in excess of $0.46 per unit per quarter. The maximumdistribution includes distributions paid to our general partner on its 2.0% general partner interest and assumes that our general partner maintains itsgeneral partner interest at 2.0%. The maximum distribution does not include any distributions that our general partner may receive on any commonor subordinated units that it owns.Percentage Allocations of Available Cash. The following table illustrates the percentage allocations of available cash between the unitholdersand our general partner based on the specified target distribution levels. The amounts set forth in the column Marginal Percentage Interest inDistributions are the percentage interests of our general partner and the unitholders in any available cash we distribute up to and including thecorresponding amount in the column Total Quarterly Distribution Per Unit Target Amount. The percentage interests shown for our unitholders andour general partner for the minimum quarterly distribution are also applicable to quarterly distribution amounts that are less than the minimumquarterly distribution. The percentage interests set forth below for our general partner include its 2.0% general partner interest and assume that ourgeneral partner has contributed any additional capital necessary to maintain its 2.0% general partner interest, our general partner has nottransferred its incentive distribution rights and that there are no arrearages on common units.101Table of Contents Total quarterly distribution per unittarget amount Marginal percentage interest in distributions Unitholders General partnerMinimum quarterly distribution$0.40 98.0% 2.0%First target distribution$0.40 up to $0.46 98.0% 2.0%Second target distributionabove $0.46 up to $0.50 85.0% 15.0%Third target distributionabove $0.50 up to $0.60 75.0% 25.0%Thereafterabove $0.60 50.0% 50.0%Details of cash distributions declared to date follow.Attributable to thequarter ended Payment date Per-unitdistribution Cash paid tocommonunitholders Cash paid tosubordinatedunitholders Cash paid togeneralpartner Cash paid forIDRs Totaldistribution (In thousands, except per-unit amounts)December 31, 2012 February 14, 2013 $0.4100 $10,009 $10,008 $408 $— $20,425March 31, 2013 May 15, 2013 0.4200 10,253 10,252 418 — 20,923June 30, 2013 August 14, 2013 0.4350 12,647 10,618 475 — 23,740September 30, 2013 November 14, 2013 0.4600 13,377 11,229 502 — 25,108December 31, 2013 February 14, 2014 0.4800 13,958 11,717 528 163 26,366March 31, 2014 May 15, 2014 0.5000 17,211 12,205 607 360 30,383June 30, 2014 August 14, 2014 0.5200 17,900 12,693 639 721 31,953September 30, 2014 November 14, 2014 0.5400 18,589 13,181 670 1,082 33,522On January 22, 2015, the board of directors of our general partner declared a distribution of $0.56 per unit for the quarterly period ended December31, 2014. The distribution was paid on February 13, 2015 to unitholders of record at the close of business on February 6, 2015. SMLP allocated itsdistribution in accordance with the third target distribution level for distributions attributable to the quarter ended December 31, 2014.Membership InterestsSummit Investments' Equity in Contributed Subsidiaries. Summit Investments' equity in contributed subsidiaries represents its position in thenet assets of Red Rock Gathering and Bison Midstream that have been acquired by SMLP. The balance also reflects net income attributable toSummit Investments for Red Rock Gathering and Bison Midstream for the periods beginning on their respective acquisition dates by SummitInvestments and ending on the dates they were acquired by the Partnership. During the years ended December 31, 2014 and December 31, 2013,net income was attributed to Summit Investments for (i) Red Rock Gathering for the period from January 1, 2014 to March 18, 2014, for the yearended December 31, 2013 and for the period from October 23, 2012 to December 31, 2012 and (ii) Bison Midstream for the period from February16, 2013 to June 4, 2013. Although included in partners' capital, net income attributable to Summit Investments has been excluded from thecalculation of EPU for the years ended December 31, 2014 and 2013 and for the period from October 1, 2012 to December 31, 2012.Predecessor Membership Interests. Holders of membership interests in Summit Investments participate in distributions and exercise the otherrights or privileges available to each entity under Summit Investments' Fourth Amended and Restated Limited Liability Operating Agreement (the"Summit LLC Agreement"). In accordance with the Summit LLC Agreement, capital accounts are maintained for Summit Investments’ members.The capital account provisions of the Summit LLC Agreement incorporate principles established for U.S. federal income tax purposes and as suchare not comparable to the equity accounts reflected under GAAP in our consolidated financial statements.The Summit LLC Agreement sets forth the calculation to be used in determining the amount and priority of cash distributions that its membershipinterest holders will receive. Capital contributions required under the Summit LLC Agreement are in proportion to the members' respectivepercentage ownership interests. The Summit LLC Agreement also contains provisions for the allocation of net earnings and losses to members.For purposes of maintaining partner capital accounts, the Summit LLC Agreement specifies that items of income and loss shall be allocatedamong the partners in accordance with their respective percentage interests.102Table of Contents9. EARNINGS PER UNITThe following table presents details on EPU. Year ended December 31, 2014 2013 2012 (1) (In thousands, except per-unit amounts)Net (loss) income$(21,164) $53,304 $42,997Less: net income attributable to the pre-IPO period— — 24,112Less: net income attributable to Summit Investments2,828 9,720 1,271Net (loss) income attributable to SMLP(23,992) 43,584 17,614Less: net (loss) income attributable to general partner, including IDRs3,125 1,035 352Net (loss) income attributable to limited partners$(27,117) $42,549 $17,262 Numerator for basic and diluted EPU: Allocation of net (loss) income among limited partner interests: Net (loss) income attributable to common units$(16,324) $23,227 $8,632Net (loss) income attributable to subordinated units(10,793) 19,322 8,630Net (loss) income attributable to limited partners$(27,117) $42,549 $17,262 Denominator for basic and diluted EPU: Weighted-average common units outstanding – basic33,311 26,951 24,412Effect of nonvested phantom units— 150 132Weighted-average common units outstanding – diluted33,311 27,101 24,544 Weighted-average subordinated units outstanding – basic and diluted24,410 24,410 24,410 (Loss) earnings per limited partner unit: Common unit – basic$(0.49) $0.86 $0.35Common unit – diluted$(0.49) $0.86 $0.35Subordinated unit – basic and diluted$(0.44) $0.79 $0.35__________(1) Calculated for the period from October 1, 2012 to December 31, 2012Our general partner was not entitled to receive incentive distributions for periods prior to the fourth quarter of 2013 based on the amount of thedistributions declared per common and subordinated unit. During the year ended December 31, 2014, we excluded 231,875 units from thecalculation of diluted loss per common unit because their impact was anti-dilutive. There were no units excluded from the calculation of dilutedearnings per common unit as we did not have any anti-dilutive units for the year ended December 31, 2013 or for the period from October 1, 2012to December 31, 2012.10. UNIT-BASED COMPENSATIONSMLP Long-Term Incentive Plan. The SMLP Long-Term Incentive Plan (the "SMLP LTIP") provides for equity awards to eligible officers,employees, consultants and directors of our general partner and its affiliates, thereby linking the recipients' compensation directly to SMLP’sperformance. The SMLP LTIP is administered by our general partner's board of directors, though such administration function may be delegated toa committee appointed by the board. A total of 5.0 million common units was reserved for issuance pursuant to and in accordance with the SMLPLTIP. As of December 31, 2014, approximately 4.6 million common units remained available for future issuance.The SMLP LTIP provides for the granting, from time to time, of unit-based awards, including common units, restricted units, phantom units, unitoptions, unit appreciation rights, distribution equivalent rights, profits interest units and other unit-based awards. Grants are made at the discretionof the board of directors or compensation committee of our general partner. The administrator of the SMLP LTIP may make grants under theSMLP LTIP that103Table of Contentscontain such terms, consistent with the SMLP LTIP, as the administrator may determine are appropriate, including vesting conditions. Theadministrator of the SMLP LTIP may, in its discretion, base vesting on the grantee's completion of a period of service or upon the achievement ofspecified financial objectives or other criteria or upon a change of control (as defined in the SMLP LTIP) or as otherwise described in an awardagreement. Termination of employment prior to vesting will result in forfeiture of the awards, except in limited circumstances as described in theplan documents. Units that are canceled or forfeited will be available for delivery pursuant to other awards.The following table presents phantom and restricted unit activity: Units Weighted-averagegrant datefair valueNonvested phantom and restricted units, January 1, 2012— $—Phantom units granted125,000 20.00Restricted units granted6,558 20.23Nonvested phantom and restricted units, December 31, 2012131,558 20.00Phantom units granted155,330 26.33Restricted units granted835 27.50Phantom units forfeited(4,041) 25.99Nonvested phantom and restricted units, December 31, 2013283,682 23.41Phantom units granted136,867 42.32Phantom and restricted units vested(61,917) 25.33Phantom units forfeited(22,430) 25.56Nonvested phantom units, December 31, 2014336,202 $30.61A phantom unit is a notional unit that entitles the grantee to receive a common unit upon the vesting of the phantom unit or on a deferred basisupon specified future dates or events or, in the discretion of the administrator, cash equal to the fair market value of a common unit. Distributionequivalent rights for each phantom unit provide for a lump sum cash amount equal to the accrued distributions from the grant date to be paid incash upon the vesting date. A restricted unit is a common limited partner unit that is subject to a restricted period during which the unit remainssubject to forfeiture.The phantom units granted in connection with the IPO vest on the third anniversary of the IPO. All other phantom units granted to date vest ratablyover a three-year period. Grant date fair value is determined based on the closing price of our common units on the date of grant multiplied by thenumber of phantom units awarded to the grantee. Holders of all phantom units granted to date are entitled to receive distribution equivalent rightsfor each phantom unit, providing for a lump sum cash amount equal to the accrued distributions from the grant date of the phantom units to be paidin cash upon the vesting date. Upon vesting, phantom unit awards may be settled, at our discretion, in cash and/or common units, but the currentintention is to settle all phantom unit awards with common units. The restricted units granted in 2013 and 2012 maintained the vesting provisionsof the share-based compensation awards they replaced, each of which had an original vesting period of four years. See "—DFW Net ProfitsInterests" below for additional information.As of December 31, 2014, the unrecognized unit-based compensation related to the SMLP LTIP was $4.1 million. Incremental unit-basedcompensation will be recorded over the remaining vesting period of approximately 2.25 years. Due to the limited and immaterial forfeiture historyassociated with the grants under the SMLP LTIP, no forfeitures were assumed in the determination of estimated compensation expense.Unit-based compensation recognized in general and administrative expense related to awards under the SMLP LTIP was as follows: Year ended December 31, 2014 2013 2012 (In thousands)SMLP LTIP unit-based compensation$4,696 $2,999 $269DFW Net Profits Interests. In connection with the formation of DFW Midstream in 2009, up to 5% of DFW Midstream's total membership interestswere authorized for issuance (the "DFW Net Profits Interests"). Grants104Table of Contentswere made in 2009 and 2010. Beginning in October 2012 and continuing into April 2013, we entered into a series of repurchases with the remainingseven holders of the then-outstanding DFW Net Profits Interests whereby we exchanged $12.2 million for their vested DFW Net Profits Interestsand 7,393 SMLP restricted units for their unvested DFW Net Profits Interests. The repurchase prices were determined by valuing the vested andunvested net profits interests in relation to the enterprise value of DFW Midstream and represented fair value at the dates of repurchase. Upon theconclusion of these repurchase transactions, there were no remaining or outstanding DFW Net Profits Interests.The DFW Net Profits Interests participated in distributions upon time vesting and the achievement of certain distribution targets and wereaccounted for as compensatory awards. Each grant vested ratably over four years and provided for accelerated vesting in certain limitedcircumstances.We determined the fair value of the DFW Net Profits Interests with assistance from a third-party valuation expert. The DFW Net Profits Interestswere valued utilizing an option pricing method, which modeled membership interests as call options on the underlying equity value of DFWMidstream and considered the rights and preferences of each class of equity to allocate a fair value to each class. A significant input of the optionpricing method was the enterprise value of DFW Midstream. We estimated the enterprise value utilizing a combination of the income and marketapproaches. Additional significant inputs used in the option pricing method included the length of holding period, discount for lack of marketabilityand volatility. Information regarding the vested and nonvested DFW Net Profits Interests were as follows: Year ended December 31, 2013 2012 Percentage Interest Weighted-average grantdate fair value (per 1.0%of DFW Net ProfitsInterest) Percentage Interest Weighted-average grantdate fair value (per 1.0%of DFW Net ProfitsInterest) (Dollars in thousands)Nonvested, beginning of period0.038% $1,650 1.750% $306Repurchased0.038% $1,650 0.000% $—Vested0.000% $— 1.644% $256Forfeited0.000% $— 0.069% $765Nonvested, end of period0.000% $— 0.038% $1,650 Vested, end of period0.000% $— 4.294% $257We recognized noncash compensation expense related to the DFW Net Profits Interests within general and administrative expense of $17thousand for the year ended December 31, 2013 and $0.7 million for the year ended December 31, 2012.SMP Net Profits Interests. In connection with the formation of Summit Investments in 2009, up to 7.5% of total membership interests wereauthorized for issuance. SMP Net Profits Interests participate in distributions upon time vesting and the achievement of certain distribution targets.The SMP Net Profits Interests are accounted for as compensatory awards. Additional SMP Net Profits Interests were granted through January2012. All grants vest ratably over five years and provide for accelerated vesting in certain limited circumstances, including a qualifying terminationfollowing a change in control. As of December 31, 2012, 6.355% of SMP Net Profits Interests had been granted to certain members ofmanagement, and no SMP Net Profits Interests had been forfeited. The SMP Net Profits Interests were retained by the Predecessor and as suchare not reflected in SMLP's financial statements subsequent to the IPO, except as noted below.During the year ended December 31, 2013, Summit Investments allocated $0.5 million of its annual expense associated with the SMP Net ProfitsInterests to Red Rock Gathering. This amount is reflected in general and administrative expenses.We determined the fair value of the SMP Net Profits Interests as of the respective grant dates with assistance from a third-party valuation expert.We valued the SMP Net Profits Interests utilizing an option pricing method, which modeled membership interests as call options on the underlyingequity value of Summit Investments and considered the rights and preferences of each class of equity to allocate a fair value to each class.A significant input of the option pricing method is the enterprise value of Summit Investments. We estimated enterprise value utilizing acombination of the income and market approaches. The income approach utilized the105Table of Contentsdiscounted cash flow method, whereby we applied a discount rate to estimated future cash flows of Summit Investments. Under the marketapproach, we applied trading multiples of the securities of publicly-traded peer companies to Summit Investments' estimated future cash flows.Additional significant inputs used in the option pricing method included length of holding period, discount for lack of marketability and volatility. Thelength of holding period was primarily determined based upon our Sponsors' expectations as of the grant date. We estimated the discount for lackof marketability and volatility with assistance from a third-party valuation firm. We estimated the discount for lack of marketability using aprotective put methodology. The protective put methodology consisted of estimating the cost to insure an investment in the SMP Net ProfitsInterests over the length of the holding period. We estimated the expected volatility of the SMP Net Profits Interests based on the historical andimplied volatilities of the securities of publicly-traded peer companies. We estimated historical volatility based on daily stock price returns over alook-back period commensurate with the length of the holding period for each grant of SMP Net Profits Interests. We estimated implied volatilitybased on the average implied volatility of the publicly-traded peer companies using data from Standard & Poor's Capital IQ proprietary researchtool. We based the expected volatility conclusions on consideration of both the historical and implied volatilities of the publicly-traded peercompanies as of the various grant dates.The inputs used in the option pricing method for the SMP Net Profits Interests granted during the year ended December 31, 2012 were as follows: January2012grantLength of holding period restriction (In years)2.93Discount for lack of marketability24.0%Volatility37.0%Information regarding the amount and grant-date fair value of the vested and nonvested SMP Net Profits Interests for the period in which they werereflected in our financial results follows. Year ended December 31, 2012 Percentage Interest Weighted-averagegrant date fairvalue (per 1.0% ofSMP Net ProfitsInterest) (Dollars in thousands)Nonvested, beginning of period3.958% $1,003Granted0.500% $1,780Vested1.271% $965Nonvested, end of period (1)3.187% $1,140 Vested, end of period3.168% $788__________(1) Subsequent to the IPO, the vested and nonvested net profits interests are obligations of the Predecessor and not the PartnershipWe recognized noncash compensation expense related to the SMP Net Profits Interests in general and administrative expense of $0.5 million forthe year ended December 31, 2013 and $0.9 million for the year ended December 31, 2012. For the year ended December 31, 2013, the expensereflects amounts allocated to Red Rock Gathering by Summit Investments prior to the Red Rock Drop Down. For the year ended December 31,2012, the expense reflects amounts attributable to the Predecessor prior to our IPO.11. CONCENTRATIONS OF RISKFinancial instruments that potentially subject us to concentrations of credit risk consist of cash and accounts receivable. We maintain our cash inbank deposit accounts that frequently exceed federally insured limits. We have not experienced any losses in such accounts and do not believewe are exposed to any significant risk.106Table of ContentsAccounts receivable primarily comprise natural gas gathering, treating and processing services we provide to our customers and also the sale ofnatural gas liquids resulting from our processing services. This industry concentration has the potential to impact our overall exposure to creditrisk, either positively or negatively, in that our customers may be similarly affected by changes in economic, industry or other conditions. Wemonitor the creditworthiness of our counterparties and can require letters of credit for receivables from counterparties that are judged to havesubstandard credit, unless the credit risk can otherwise be mitigated.Counterparties accounting for more than 10% of total revenues were as follows: Year ended December 31, 2014 2013 2012Revenue: Counterparty A - Piceance Basin22% 19% 27%Counterparty B - Williston Basin10% * —%Counterparty C - Williston Basin* * —%Counterparty D - Marcellus Shale* * —%Counterparty E - Barnett Shale* 15% 19%Counterparty F - Barnett Shale* * 14%__________* Less than 10%Counterparties accounting for more than 10% of total accounts receivable were as follows: December 31, 2014 2013Accounts receivable: Counterparty A - Piceance Basin29% 37%Counterparty B - Williston Basin* *Counterparty C - Williston Basin14% *Counterparty D - Marcellus Shale10% *Counterparty E - Barnett Shale* 11%Counterparty F - Barnett Shale* *__________* Less than 10%12. RELATED-PARTY TRANSACTIONSRecent Acquisitions. See Notes 1, 8 and 15 for disclosure of the Red Rock Drop Down, the Bison Drop Down and the funding of thosetransactions.Reimbursement of Expenses from General Partner. Our general partner and its affiliates do not receive a management fee or othercompensation in connection with the management of our business, but will be reimbursed for expenses incurred on our behalf. Under ourpartnership agreement, we reimburse our general partner and its affiliates for certain expenses incurred on our behalf, including, without limitation,salary, bonus, incentive compensation and other amounts paid to our general partner's employees and executive officers who perform servicesnecessary to run our business. Our partnership agreement provides that our general partner will determine in good faith the expenses that areallocable to us. Due to affiliate on the consolidated balance sheet represents the payables to our general partner for expenses incurred by it andpaid on our behalf.Expenses incurred by the general partner and reimbursed by us under our partnership agreement were as follows: Year ended December 31, 2014 2013 2012 (In thousands)Operation and maintenance expense$17,223 $13,808 $2,913General and administrative expense18,843 17,362 3,661107Table of ContentsExpense Allocations. During the period from January 1, 2014 to March 18, 2014 and the year ended December 31, 2013, Summit Investmentsincurred interest expense which was related to capital projects at Red Rock Gathering. As such, the associated interest expense was allocated toRed Rock Gathering as a noncash contribution and capitalized into the basis of the asset.Certain of Summit Investments’ current and former employees received Class B membership interests, classified as net profits interests, inSummit Investments (the “Net Profits Interests”). The Net Profits Interests participate in distributions upon time vesting and the achievement ofcertain distribution targets to Class A members or higher priority vested Net Profits Interests. The Net Profits Interests were accounted for ascompensatory awards.Summit Investments allocated a portion of the annual expense associated with the Net Profits Interests to Red Rock Gathering during the yearended December 31, 2013. This amount is reflected in general and administrative expenses in the statement of operations.Expenses Paid by Summit Investments on Behalf of Red Rock Gathering. Prior to the Red Rock Drop Down, Summit Investments incurredcertain support expenses and capital expenditures on behalf of Red Rock Gathering during the years ended December 31, 2014 and 2013. Thesetransactions were settled periodically through membership interests prior to the Red Rock Drop Down.Electricity Management Services Agreement. We entered into a consulting arrangement with EquiPower Resources Corp. to assist withmanaging DFW Midstream's electricity price risk. EquiPower Resources Corp. is an affiliate of Energy Capital Partners and is also the employer ofa director of our general partner. Amounts paid for such services were as follows: Year ended December 31, 2014 2013 2012 (In thousands)Payments for electricity management consulting services$234 $199 $204The consulting arrangement terminated on December 31, 2014.Engineering Services Agreement. We entered into an engineering services arrangement with IPS Engineering/EPC. IPS Engineering/EPC is anaffiliate of Energy Capital Partners. We paid $0.6 million for such services during the year ended December 31, 2014 and $0.2 million for suchservices during the year ended December 31, 2013.Promissory Notes Payable to Sponsors. In conjunction with the acquisition of Grand River Gathering in 2011, we executed $200.0 million ofpromissory notes, on an unsecured basis, with the Sponsors. The notes had an 8% interest rate and were scheduled to mature in October 2013. InMay 2012, we borrowed $163.0 million under the revolving credit facility and used a portion of the same borrowings to prepay $160.0 millionprincipal amount of the promissory notes payable to the Sponsors. Then in July 2012, we borrowed an additional $50.0 million under the revolvingcredit facility, a portion of which was used to pay the remaining $49.2 million principal amount of the promissory notes payable to Sponsors(inclusive of accrued pay-in-kind interest).In accordance with the terms of the underlying note agreement, prior to their repayment in July 2012, we elected to make all interest payments onthe note in kind. The amount of interest paid in kind and accrued to the balance of the notes for year ended December 31, 2012, wasapproximately $6.3 million, of which we capitalized $0.9 million of interest expense related to costs incurred on capital projects under construction.Diligence Expenses. In the past, the Sponsors reimbursed Summit Investments for transactional due diligence expenses related to proposedtransactions that were not completed. As of December 31, 2011, we had a receivable from the Sponsors of $1.3 million for similar expenses.During the year ended December 31, 2012, we were reimbursed $0.3 million, while $1.0 million was not paid.13. BENEFIT PLANWe have a defined contribution benefit plan for our employees. The expense associated with this plan was approximately $0.8 million in 2014, $0.6million in 2013, and $0.2 million in 2012.14. COMMITMENTS AND CONTINGENCIESOperating Leases. We and Summit Investments lease certain office space to support our operations. We have determined that our leases areoperating leases. We recognize total rent expense incurred or allocated to us in108Table of Contentsgeneral and administrative expenses. Rent expense related to operating leases, including rent expense incurred on our behalf and allocated to us,was as follows: Year ended December 31, 2014 2013 2012 Rent expense$1,677 $1,381 $732Future minimum lease payments for the Partnership's operating leases are immaterial.Legal Proceedings. The Partnership is involved in various litigation and administrative proceedings arising in the normal course of business. Inthe opinion of management, any liabilities that may result from these claims or those arising in the normal course of business would notindividually or in the aggregate have a material adverse effect on its financial position or results of operations.15. ACQUISITIONSRed Rock Gathering System. On March 18, 2014, the Partnership acquired Red Rock Gathering from a subsidiary of Summit Investments,subject to customary working capital adjustments. The Partnership paid total cash consideration of $307.9 million, comprising $305.0 million at thedate of acquisition and $2.9 million of working capital adjustments that were recognized in due to affiliate as of December 31, 2014 and settled inFebruary 2015. The acquisition of Red Rock Gathering was funded with the net proceeds from an offering of common units in March 2014, $100.0million of borrowings under our revolving credit facility and cash on hand. Because of the common control aspects in the drop down transaction,the Red Rock Gathering acquisition was deemed a transaction between entities under common control and, as such, was accounted for on an “as-if pooled” basis for all periods in which common control existed. SMLP’s financial results retrospectively include Red Rock Gathering’s financialresults for all periods ending after October 23, 2012, the date Summit Investments acquired its interests, and before March 18, 2014.Summit Investments acquired the natural gas gathering pipeline, dehydration, compression and processing assets in the Piceance Basin inwestern Colorado and eastern Utah that comprise the Red Rock Gathering system from a subsidiary of Energy Transfer Partners, L.P. inSeptember 2012 for $206.7 million. Summit Investments' acquisition of the Red Rock Gathering system closed on October 23, 2012. SummitInvestments accounted for its acquisition of Red Rock Gathering under the acquisition method of accounting. Red Rock Gathering's identifiabletangible and intangible assets acquired and liabilities assumed were recognized at their fair values as of October 23, 2012. The intangible assetsthat were acquired comprised right-of-way easements with a life of 20 years upon acquisition. Their fair values were determined based uponassumptions related to future cash flows, discount rates, asset lives, and projected capital expenditures to complete the Red Rock Gatheringsystem. The final fair values of the assets acquired and liabilities assumed as of October 23, 2012, were as follows (in thousands):Red Rock Gathering purchase price $206,694Cash$1,097 Accounts receivable8,018 Other assets317 Property, plant, and equipment150,401 Rights-of-way52,197 Other noncurrent assets164 Total assets acquired212,194 Trade accounts payable2,558 Other current liabilities2,942 Total liabilities assumed$5,500 Net identifiable assets acquired $206,694During the fourth quarter of 2014, we identified and wrote off the balance associated with a working capital adjustment received after the purchaseaccounting measurement period closed for Summit Investments' acquisition109Table of Contentsof Red Rock Gathering. This write off was recognized as a $1.2 million increase to gathering services and other fees for the year ended December31, 2014.Lonestar Assets. DFW Midstream completed the acquisition of certain natural gas gathering assets located in the Barnett Shale Play ("Lonestar")from Texas Energy Midstream, L.P. ("TEM") for $10.9 million on September 30, 2014. The Lonestar assets gather natural gas under two long-term,fee-based contracts. SMLP is accounting for the purchase under the acquisition method of accounting. As of September 30, 2014, we preliminarilyassigned the full purchase price to property, plant and equipment. During the fourth quarter of 2014, we received additional information from TEMand finalized the purchase price allocation.Bison Gas Gathering System. On February 15, 2013, Summit Investments acquired BTE. On June 4, 2013, a subsidiary of Summit Investmentsentered into a purchase and sale agreement with SMLP whereby SMLP acquired the Bison Gas Gathering system. The Bison Gas Gatheringsystem was carved out from Meadowlark Midstream and primarily gathers associated natural gas production from customers operating in Mountrailand Burke counties in North Dakota under long-term contracts ranging from five years to 15 years. The weighted-average life of the acquiredcontracts was 12 years upon acquisition.Summit Investments accounted for its purchase of BTE (the "BTE Transaction") under the acquisition method of accounting, whereby the variousgathering systems' identifiable tangible and intangible assets acquired and liabilities assumed were recorded based on their fair values as ofFebruary 15, 2013. The intangible assets that were acquired are composed of gas gathering agreement contract values and rights-of-wayeasements. Their fair values were determined based upon assumptions related to future cash flows, discount rates, asset lives, and projectedcapital expenditures to complete the system.Because the Bison Drop Down was executed between entities under common control, SMLP recognized the acquisition of the Bison GasGathering system at historical cost which reflected Summit Investments fair value accounting for the BTE Transaction. Furthermore, due to thecommon control aspect, the Bison Drop Down was accounted for by SMLP on an “as-if pooled” basis for all periods in which common controlexisted. Common control began on February 15, 2013 concurrent with the BTE Transaction.The fair values of the assets acquired and liabilities assumed as of February 15, 2013, were as follows (in thousands):Purchase price assigned to Bison Gas Gathering system $303,168Current assets$5,705 Property, plant, and equipment85,477 Intangible assets164,502 Other noncurrent assets2,187 Total assets acquired257,871 Current liabilities6,112 Other noncurrent liabilities2,790 Total liabilities assumed$8,902 Net identifiable assets acquired 248,969Goodwill $54,199The Bison Drop Down closed on June 4, 2013. The total acquisition purchase price of $248.9 million was funded with $200.0 million of borrowingsunder SMLP’s revolving credit facility and the issuance of $47.9 million of SMLP common units to Summit Investments and $1.0 million of generalpartner interests to SMLP’s general partner. Summit Investments had a net investment in the Bison Gas Gathering system of $303.2 million andreceived total consideration of $248.9 million from SMLP. As a result, SMLP recognized a capital contribution from Summit Investments for thecontribution of net assets in excess of consideration paid.Mountaineer Midstream. We completed the acquisition of Mountaineer Midstream from MarkWest for $210.0 million on June 21, 2013. TheMountaineer Midstream natural gas gathering and compression assets are located in the Appalachian Basin which includes the Marcellus Shaleformation primarily in Doddridge and Harrison counties in northern West Virginia. The Mountaineer Midstream system consists of newlyconstructed, high-pressure gas gathering pipelines, certain rights-of-way associated with the pipeline, and two compressor stations. The assetsgather natural gas under a long-term, fee-based contract with Antero Resources Corp. ("Antero"). The life of the acquired contract was 13 yearsupon acquisition.110Table of ContentsThe Mountaineer Acquisition was funded with $110.0 million of borrowings under the Partnership's revolving credit agreement and the issuance of$100.0 million of common and general partner interests to a subsidiary of Summit Investments. For the year ended December 31, 2013, SMLPrecorded $9.6 million of revenue and $2.3 million of net income related to Mountaineer Midstream.SMLP accounted for the Mountaineer Acquisition under the acquisition method of accounting. As of June 30, 2013, we preliminarily assigned thefull $210.0 million purchase price to property plant and equipment. During the third quarter of 2013, we received additional information and, as aresult, preliminarily assigned $158.3 million of the purchase price to property, plant and equipment, $27.1 million to contract intangibles, $6.5million to rights-of-way and $18.1 million to goodwill. During the fourth quarter of 2013, we received additional information from MarkWest andfinalized the purchase price allocation.The final fair values of the assets acquired and liabilities assumed as of June 21, 2013, were as follows (in thousands):Purchase price assigned to Mountaineer Midstream $210,000Property, plant, and equipment$163,661 Gas gathering agreement contract intangibles24,019 Rights-of-way6,109 Total assets acquired193,789 Total liabilities assumed$— Net identifiable assets acquired 193,789Goodwill $16,211Grand River Gathering. During the fourth quarter of 2014, we identified and wrote off certain balances previously recognized in connection withthe Predecessor's purchase accounting for Grand River Gathering. This write off was recognized as a $1.2 million increase to other income.Supplemental Disclosures – As-If Pooled Basis. As noted above, SMLP's acquisition of Red Rock Gathering and the Bison Gas Gatheringsystem were transactions between commonly controlled entities which required that SMLP account for the acquisitions in a manner similar to apooling of interests. As a result, the historical financial statements of the Partnership, Red Rock Gathering and the Bison Gas Gathering systemhave been combined to reflect the historical operations, financial position and cash flows from the date common control began. Revenues and netincome for the previously separate entities and the combined amounts for the years ended December 31, 2014, 2013 and 2012, as presented inthese consolidated financial statements follow. Year ended December 31, 2014 2013 2012 (In thousands)SMLP revenues$319,373 $225,192 $165,499Red Rock Gathering revenues11,313 50,114 8,924Bison Gas Gathering system revenues (1) 17,614 Combined revenues$330,686 $292,920 $174,423 SMLP net (loss) income$(23,992) $43,584 $41,726Red Rock Gathering net income2,828 9,668 1,271Bison Gas Gathering system net income (1) 52 Combined net (loss) income$(21,164) $53,304 $42,997__________(1) Results are fully reflected in SMLP's results of operations for the year ended December 31, 2014.Unaudited Pro Forma Financial Information. The following unaudited pro forma financial information assumes that:•The acquisition of the Bison Gas Gathering system occurred on January 1, 2012. The pro forma results for Bison Midstream were derivedfrom revenues and net income in 2013 and 2012.111Table of Contents•The acquisition of Mountaineer Midstream occurred on January 1, 2012. The pro forma results for Mountaineer Midstream were derivedfrom revenues and net income in 2013. Mountaineer Midstream was not operational until November 2012.•The acquisition of Red Rock Gathering occurred on January 1, 2011. The pro forma results reflect actual Red Rock Gathering revenuesand net income earned and recognized in 2014 and 2013 and by annualizing the actual operating results for Red Rock Gathering that wererecorded in 2012 for the year ended December 31, 2012.•The acquisition of the Lonestar assets is immaterial for pro forma purposes and as such has not been reflected below.•Pro forma net income for the year ended December 31, 2014 has been adjusted to remove the impact of $0.7 million of nonrecurringtransaction costs associated with the acquisition of Red Rock Gathering.•Pro forma net income for the year ended December 31, 2013 has been adjusted to remove the impact of $2.5 million of nonrecurringtransaction costs associated with the acquisitions of Bison Midstream and Mountaineer Midstream.•Pro forma net income for the year ended December 31, 2012 has been adjusted to remove the impact of $1.6 million of nonrecurringtransaction costs associated with the acquisition of Red Rock Gathering.•Pro forma adjustments in 2013 and 2012 also reflect the impact of $310.0 million of incremental borrowings on our revolving credit facilityfor the Bison Midstream and Mountaineer Midstream acquisitions and incremental depreciation and amortization expense associated withthe acquired property, plant and equipment and contract intangibles as a result of the application of fair value accounting for BisonMidstream.•Pro forma adjustments in 2014, 2013 and 2012 also reflect the impact of a 5,300,000 common unit issuance, the general partner capitalcontribution to maintain its 2% general partner interest and $100.0 million of incremental borrowings on our revolving credit facility to fundthe acquisition of Red Rock Gathering. Year ended December 31, 2014 2013 2012 (In thousands, except for per-unit amounts)Total Red Rock Gathering revenues included in consolidated revenues$73,266 $50,114 $8,924Total Bison Midstream and Mountaineer Midstream revenues included in consolidatedrevenues 60,323 Total Red Rock Gathering net income included in consolidated net income$27,447 $9,668 $1,271Total Bison Midstream and Mountaineer Midstream net loss included in consolidated netincome (457) Pro forma total revenues$330,686 $305,071 $256,637Pro forma net (loss) income(20,938) 47,371 38,639 Pro forma common EPU - basic and diluted$(0.41) $0.79 $0.28Pro forma subordinated EPU - basic and diluted(0.41) 0.79 0.28The unaudited pro forma financial information presented above is not necessarily indicative of (i) what our financial position or results of operationswould have been if the acquisitions of Bison Midstream and Mountaineer Midstream had occurred on January 1, 2012 or if the acquisition of RedRock Gathering had occurred on January 1, 2011, or (ii) what SMLP’s financial position or results of operations will be for any future periods.112Table of Contents16. UNAUDITED QUARTERLY FINANCIAL DATASummarized information on the consolidated results of operations for each of the quarters during the two-year period ended December 31, 2014,follows. Quarter endedDecember 31, 2014 Quarter endedSeptember 30,2014 Quarter endedJune 30,2014 Quarter endedMarch 31,2014 (In thousands, except per-unit amounts)Total revenues$94,658 $79,030 $80,796 $76,202 Net (loss) income attributable to partners(1)$(37,686) $6,113 $4,036 $3,545Less: net (loss) income attributable to general partner, including IDRs689 1,204 801 431Net (loss) income attributable to limited partners$(38,375) $4,909 $3,235 $3,114 (Loss) earnings per limited partner unit: Common unit – basic$(0.65) $0.08 $0.05 $0.08Common unit – diluted$(0.65) $0.08 $0.05 $0.08Subordinated unit – basic and diluted$(0.65) $0.08 $0.05 $0.02__________(1) In the quarter ended December 31, 2014, includes $54.2 million of goodwill impairment and $5.5 million of long-lived asset impairment. Quarter endedDecember 31, 2013 Quarter endedSeptember 30,2013 Quarter endedJune 30,2013 Quarter endedMarch 31,2013 (In thousands, except per-unit amounts)Total revenues(1)$83,455 $76,019 $71,461 $61,984 Net income attributable to partners$16,345 $6,691 $8,068 $12,480Less: net income attributable to general partner, including IDRs490 134 161 250Net income attributable to limited partners$15,855 $6,557 $7,907 $12,230 Earnings per limited partner unit: Common unit – basic$0.30 $0.12 $0.16 $0.25Common unit – diluted$0.29 $0.12 $0.16 $0.25Subordinated unit – basic and diluted$0.30 $0.12 $0.16 $0.25__________(1) Retrospectively adjusted for the impact of the Red Rock Drop Down and the Bison Drop Down.The amounts for total revenues as originally filed on the respective 2013 quarterly reports on Form 10-Q have been retrospectively adjusted for theimpact of the Red Rock Drop Down and Bison Drop Down. There was no impact on net income attributable to partners or EPU. A reconciliation oftotal revenues follows. Quarter endedDecember 31, 2013 Quarter endedSeptember 30,2013 Quarter endedJune 30,2013 Quarter endedMarch 31,2013 (In thousands)Total revenues as originally reported$69,298 $63,096 $59,285 $43,595Total revenue impact of Red Rock Drop Down14,157 12,923 12,176 10,858Total revenue impact of Bison Drop Down— — — 7,531Total revenues$83,455 $76,019 $71,461 $61,984113Table of ContentsItem 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure Matters.There have been no changes in, or disagreements with, accountants on accounting and financial disclosure matters during the years endedDecember 31, 2014 and 2013.Item 9A. Controls and Procedures.Disclosure Controls and ProceduresWe maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in the reports that wefile or submit to the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), isrecorded, processed, summarized and reported within the time periods specified by the Commission’s rules and forms, and that information isaccumulated and communicated to the management of our general partner, including our general partner’s principal executive and principalfinancial officers (whom we refer to as the Certifying Officers), as appropriate to allow timely decisions regarding required disclosure. SMLP’smanagement, with the participation of the Chief Executive Officer and Chief Financial Officer of SMLP's general partner, has evaluated theeffectiveness of SMLP’s disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act)as of the end of the period covered by this annual report (the "Evaluation Date"). Based on such evaluation, the Chief Executive Officer and ChiefFinancial Officer of SMLP's general partner have concluded that, as of the Evaluation Date, SMLP’s disclosure controls and procedures areeffective.Changes in Internal Control Over Financial ReportingThere have not been any changes in SMLP’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f)under the Exchange Act) during the fourth fiscal quarter of 2014 that have materially affected, or are reasonably likely to materially affect, SMLP'sinternal control over financial reporting.Management’s Annual Report On Internal Control Over Financial ReportingOur general partner is responsible for establishing and maintaining an adequate system of internal control over financial reporting, as such term isdefined in Exchange Act Rules 13a-15(f) and 15d-15(f). Our internal control system was designed to provide reasonable assurance to ourmanagement and board of directors of our general partner regarding the preparation and fair presentation of published financial statements.All internal control systems, no matter how well designed, have inherent limitations. Therefore, internal control over financial reporting may notprevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may becomeinadequate because of changes in conditions, or that the degree of compliance with policies and procedures may deteriorate.Our management, including the Chief Executive Officer and Chief Financial Officer of SMLP's general partner, has conducted an evaluation of theeffectiveness of our internal control over financial reporting as of December 31, 2014 based on the framework in Internal Control - IntegratedFramework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that evaluation, managementconcluded that our internal control over financial reporting was effective as of December 31, 2014./s/ Steven J. NewbySteven J. NewbyPresident and Chief Executive Officer, Summit Midstream GP, LLC (thegeneral partner of SMLP) /s/ Matthew S. HarrisonMatthew S. HarrisonSenior Vice President and Chief Financial Officer, Summit Midstream GP,LLC (the general partner of SMLP)Deloitte & Touche LLP has independently assessed the effectiveness of our internal control over financial reporting and its report is includedbelow.114Table of ContentsREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMTo the Board of Directors of Summit Midstream GP, LLC and the unitholders of Summit Midstream Partners, LPThe Woodlands, TexasWe have audited the internal control over financial reporting of Summit Midstream Partners, LP and subsidiaries (the "Partnership") as ofDecember 31, 2014, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of SponsoringOrganizations of the Treadway Commission. The Partnership's management is responsible for maintaining effective internal control over financialreporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’sAnnual Report On Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Partnership's internal control overfinancial reporting based on our audit.We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standardsrequire that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting wasmaintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk thata material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, andperforming such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for ouropinion.A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive andprincipal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and otherpersonnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for externalpurposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policiesand procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions anddispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation offinancial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are beingmade only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regardingprevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on thefinancial statements.Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper managementoverride of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of anyevaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may becomeinadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014,based on the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of theTreadway Commission.We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidatedfinancial statements as of and for the year ended December 31, 2014 of the Partnership and our report dated March 2, 2015 expressed anunqualified opinion on those financial statements and included an explanatory related to the change in the Partnership’s presentation of itsreportable segments./s/ Deloitte & Touche LLPDallas, TexasMarch 2, 2015115Table of ContentsItem 9B. Other Information.Not applicable.116Table of ContentsPART IIIItem 10. Directors, Executive Officers and Corporate Governance.Management of Summit Midstream Partners, LPWe are managed by the directors and executive officers of our general partner, Summit Midstream GP, LLC. Our general partner is not elected byour unitholders and will not be subject to re-election in the future. Summit Investments, which is owned and controlled by Energy Capital Partners,owns and controls SMP Holdings, the sole owner of our general partner. SMP Holdings has the right to appoint the entire board of directors of ourgeneral partner, including our independent directors. All decisions of the board of directors of our general partner will require the affirmative vote ofa majority of all of the directors constituting the board, provided that such majority includes at least a majority of the directors designated as an"Energy Capital Partner Designated Director" by Energy Capital Partners. The Energy Capital Partner Designated Directors are Thomas K. Lane,Christopher M. Leininger, Curtis A. Morgan, Scott A. Rogan and Jeffrey R. Spinner. Our unitholders are not entitled to directly or indirectlyparticipate in our management or operations. Our general partner is liable, as general partner, for all of our debts (to the extent not paid from ourassets), except for indebtedness or other obligations that are made specifically nonrecourse to it. Whenever possible, we intend to incurindebtedness that is nonrecourse to our general partner.Our general partner's limited liability company agreement provides that the board of directors of our general partner must obtain the approval ofmembers representing a majority interest in our general partner for certain actions affecting us. These include actions related to:•transactions with affiliates;•entering into any hedging transactions that are not in compliance with Financial Accounting Standard 133;•the voluntary liquidation, wind-up or dissolution of us or any of our subsidiaries;•making any election that would result in us being classified as other than a partnership or a disregarded entity for U.S. federal income taxpurposes;•filing or consenting to the filing of any bankruptcy, insolvency or reorganization petition for relief from debtors or protection from creditorsnaming us or any of our subsidiaries; and•effecting a material amendment to our general partner's limited liability company agreement.Currently, SMP Holdings is the sole member of our general partner.Committees of the Board of DirectorsThe board of directors of our general partner has an audit committee (the "Audit Committee"), a conflicts committee (the "Conflicts Committee")and a compensation committee (the "Compensation Committee") and may have such other committees as the board of directors shall determinefrom time to time.The table below shows the current membership of each standing board committee.Name AuditCommittee ConflictsCommittee Compensation Committee IndependentDirectorThomas K. Lane Chair NoChristopher M. Leininger NoCurtis A. Morgan NoSteven J. Newby NoJerry L. Peters Chair Member YesScott A. Rogan NoJeffrey R. Spinner Member NoSusan Tomasky Member Chair YesRobert M. Wohleber Member Member Member YesEach of the standing committees of the board of directors will have the composition and responsibilities described below.117Table of ContentsAudit Committee. Jerry L. Peters, Susan Tomasky and Robert M. Wohleber serve as the members of the Audit Committee. Mr. Peters serves asthe chair of our Audit Committee. In this role, Mr. Peters satisfies the SEC and New York Stock Exchange rules regarding independence andqualifies as an audit committee financial expert.The Audit Committee assists the board of directors in its oversight of the integrity of our financial statements and our compliance with legal andregulatory requirements and corporate policies and controls. The Audit Committee has the sole authority to retain and terminate our independentregistered public accounting firm, approve all auditing services and related fees and the terms thereof, and pre-approve any non-audit services tobe rendered by our independent registered public accounting firm. The Audit Committee is also responsible for confirming the independence andobjectivity of our independent registered public accounting firm. Our independent registered public accounting firm has unrestricted access to theAudit Committee.Our Audit Committee has adopted an audit committee charter, which is available on our website at www.summitmidstream.com.Conflicts Committee. At the direction of our general partner, our Conflicts Committee will review specific matters that may involve conflicts ofinterest in accordance with the terms of our partnership agreement. The Conflicts Committee will determine if the resolution of the conflict ofinterest is in the best interests of our partnership. There is no requirement that our general partner seek the approval of the Conflicts Committee forthe resolution of any conflict. The members of the Conflicts Committee may not be officers or employees of our general partner or directors,officers, or employees of any of its affiliates. They may not hold any ownership interest in our general partner or us and our subsidiaries other thancommon units and other awards that are granted under our incentive plans in place from time to time. Furthermore, the members of the ConflictsCommittee must meet the independence and experience standards established by the New York Stock Exchange and the Exchange Act to serveon an audit committee of a board of directors. Mr. Peters, Ms. Tomasky and Mr. Wohleber currently serve as the members of our ConflictsCommittee, with Ms. Tomasky serving as chair of the committee.Any matters approved by the Conflicts Committee in good faith will be conclusively deemed to be approved by all of our partners and not a breachby our general partner of any duties it may owe us or our unitholders. Any unitholder challenging any matter approved by the Conflicts Committeewill have the burden of proving that the members of the Conflicts Committee did not subjectively believe that the matter was in the best interestsof our partnership. Moreover, any acts taken or omitted to be taken in reliance upon the advice or opinions of experts such as legal counsel,accountants, appraisers, management consultants and investment bankers, where our general partner (or any members of the board of directors ofour general partner including any member of the Conflicts Committee) reasonably believes the advice or opinion to be within such person'sprofessional or expert competence, shall be conclusively presumed to have been taken or omitted in good faith.Compensation Committee. Mr. Lane, Mr. Spinner and Mr. Wohleber serve as the members of the Compensation Committee, with Mr. Laneserving as chair of the committee. The Compensation Committee provides oversight, administers and makes decisions regarding ourcompensation policies and plans. Although our common units are listed on the New York Stock Exchange, we have taken advantage of the“Limited Partnership” exemption to the New York Stock Exchange rule requiring listed companies to have an independent compensation committeewith a written charter.Directors and Executive OfficersDirectors are appointed for a term of one year and hold office until their successors have been elected or qualified or until the earlier of their death,resignation, removal or disqualification. Officers serve at the discretion of the board of directors of our general partner.118Table of ContentsThe following table shows information for the directors and executive officers of our general partner as of March 2, 2015.Name Age Position with Summit Midstream GP, LLCSteven J. Newby 42 President, Chief Executive Officer and DirectorMatthew S. Harrison 44 Senior Vice President and Chief Financial OfficerRene L. Casadaban 46 Senior Vice President and Chief Operating OfficerBrock M. Degeyter 38 Senior Vice President, General Counsel and Chief Compliance OfficerBrad N. Graves 48 Senior Vice President and Chief Commercial OfficerThomas K. Lane 58 DirectorChristopher M. Leininger 46 DirectorCurtis A. Morgan 54 DirectorJerry L. Peters 57 DirectorScott A. Rogan 44 DirectorJeffrey R. Spinner 33 DirectorSusan Tomasky 61 DirectorRobert M. Wohleber 64 DirectorSteven J. Newby has been the President and Chief Executive Officer of our general partner since May 2012. Mr. Newby was a founding memberof Summit Midstream Partners, LLC and has been the President and Chief Executive Officer of Summit Midstream Partners, LLC since itsformation in September 2009. Mr. Newby was a founding member of SunTrust Bank's Corporate Energy industry specialty group and ultimatelybecame a Managing Director and Head of the Project Finance Group within SunTrust's Capital Markets division. In 2007, Mr. Newby joined INGInvestment Management to manage a $300 million proprietary fund focused on the private and public investment in the energy infrastructurespace. Mr. Newby is a graduate of the University of North Carolina at Chapel Hill with a B.S. in Business Administration with a concentration inFinance.Matthew S. Harrison has been the Senior Vice President and Chief Financial Officer of our general partner since May 2012. Prior to joining ourgeneral partner, Mr. Harrison was the Senior Vice President and Chief Financial Officer of Summit Midstream Partners, LLC since September2011. Mr. Harrison joined Summit Midstream Partners, LLC from Hiland Partners, LP, where he served as Executive Vice President and ChiefFinancial Officer, Secretary and Director from February 2008 to September 2011. Prior to joining Hiland, Mr. Harrison was a Director in the Energy& Power Merger & Acquisitions group at Wachovia Capital Markets from October 2007 to February 2008 and a Director in the Mergers &Acquisitions group at A.G. Edwards & Sons, Inc. from July 1999 to October 2007. Mr. Harrison was a Senior Accountant for Price Waterhouse forfive years. Mr. Harrison received an MBA from Northwestern University—Kellogg Graduate School of Management in 1999 and a B.S. inAccounting from the University of Tennessee in 1992.Rene L. Casadaban has been the Senior Vice President and Chief Operating Officer of our general partner since January 2014 and the SeniorVice President of Engineering, Construction, and Operations of our general partner since May 2012. Prior to joining our general partner, Mr.Casadaban was the Senior Vice President of Engineering, Construction and Operations of Summit Midstream Partners, LLC from February 2011until April 2012, and prior to that he served as a vice president from the time he joined Summit Midstream Partners, LLC in November 2010. Priorto joining Summit Midstream Partners, LLC, Mr. Casadaban worked for Enterprise Products Partners L.P. from 2006 to 2010 as the Director forDeepwater Development of floating production platforms and offshore pipelines. Mr. Casadaban has also served as an independent consultant toExxonMobil and GulfTerra for Gulf of Mexico and international pipeline projects. At Land & Marine, Mr. Casadaban was responsible for managingdomestic and international pipeline river crossings and beach approaches by horizontal directional drilling. Mr. Casadaban is a graduate of AuburnUniversity with a B.S. in Building Construction.Brock M. Degeyter has been the Senior Vice President and General Counsel of our general partner since May 2012 and the Chief ComplianceOfficer since January 2014. Mr. Degeyter joined Summit Midstream Partners, LLC in January 2012 as Senior Vice President and General Counsel.Prior to joining our general partner, Mr. Degeyter worked in the corporate legal department for Energy Future Holdings (formerly TXU Corp.) fromJanuary 2007 through December 2011 where he served as Director of Corporate Governance and Senior Counsel. Prior to joining119Table of ContentsEnergy Future Holdings, Mr. Degeyter was engaged in private practice with the firm of Correro Fishman Haygood Phelps Walmsley & Casteix LLPfrom May 2002 through December 2006. Mr. Degeyter is licensed to practice law in the states of Texas and Louisiana. Mr. Degeyter received aB.A. in Political Science from Louisiana State University and a J.D. from Loyola University College of Law in New Orleans.Brad N. Graves has been the Senior Vice President of Corporate Development of our general partner since May 2012. In March 2013, he waspromoted to Chief Commercial Officer. Prior to joining our general partner, Mr. Graves was the Senior Vice President of Corporate Development ofSummit Midstream Partners, LLC since April 2010. He was previously a Partner with Crestwood Midstream Partners, LLC from February 2008 untilMarch 2010. Mr. Graves has served as Executive Vice President—Business Development of Genesis Energy, LP from August 2006 untilNovember 2007. He also served as Vice President—Offshore Commercial for Enterprise Products Partners L.P. ("Enterprise") from 2004 untilAugust 2006. Prior to 2004, Mr. Graves served in a variety of commercial roles at Enterprise and GulfTerra Energy Partners, LP ("GulfTerra"), priorto its merger with Enterprise. In his roles with Enterprise and GulfTerra, Mr. Graves participated in numerous greenfield projects developed in theGulf of Mexico. Mr. Graves earned a B.B.A. in Accounting from Texas A&M University in 1989 and an MBA in Marketing and Finance from theUniversity of Saint Thomas in 1994.Thomas K. Lane has served as a director of our general partner since May 2012 and was appointed to the board in connection with his affiliationwith Energy Capital Partners, which owns and controls Summit Investments, the sole owner of SMP Holdings, the entity that owns and controlsour general partner. Additionally, Mr. Lane serves as the chair of the Compensation Committee of our general partner. Mr. Lane has been a partnerof Energy Capital Partners since 2005. Prior to joining Energy Capital Partners, Mr. Lane worked for 17 years in the Investment Banking Divisionat Goldman Sachs. As a Managing Director at Goldman Sachs, Mr. Lane had senior-level coverage responsibility for electric and gas utilities,independent power companies and merchant energy companies throughout the United States. Mr. Lane received a B.A. in economics fromWheaton College and an MBA from the University of Chicago. Mr. Lane was selected to serve as a director on the board due to his affiliation withEnergy Capital Partners, his knowledge of the energy industry and his financial and business expertise.Christopher M. Leininger has served as a director of our general partner since August 2013 and was appointed to the board in connection withhis affiliation with Energy Capital Partners. Mr. Leininger has been Deputy General Counsel and Chief Compliance Officer at Energy CapitalPartners since 2006. Prior to joining Energy Capital Partners, Mr. Leininger was an associate at the law firm of Latham & Watkins LLP and amember of its Finance department. Mr. Leininger serves on the boards of EnergySolutions, Inc. and PLH Group, Inc. Mr. Leininger received a B.A.in History and Political Science from the University of San Diego and a J.D. from the University of Virginia School of Law. Mr. Leininger wasselected to serve as a director on the board due to his affiliation with Energy Capital Partners, his knowledge of the energy industry and hisfinancial and business expertise.Curtis A. Morgan has served as a director of our general partner since May 2012 and was appointed to the board in connection with his affiliationwith Energy Capital Partners, which controls our general partner. Mr. Morgan has served as the President and Chief Executive Officer ofEquiPower Resources Corp. since May 2010. Prior to joining EquiPower Resources Corp., he served as an Operating Partner of Energy CapitalPartners from May 2009 to May 2010. Prior to joining Energy Capital Partners, he served as President and Chief Executive Officer of FirstLightPower Enterprises from November 2006 to April 2009. Mr. Morgan has also held leadership positions at NRG Energy, Mirant Corporation andReliant Energy. Mr. Morgan received a B.A. in Accounting from Western Illinois University and an MBA in Finance and Economics from theUniversity of Chicago. He is a Certified Public Accountant. We believe that Mr. Morgan's extensive executive, financial and operational experiencebring important and necessary skills to the board of directors.Jerry L. Peters has served as a director of our general partner since September 2012. Additionally, Mr. Peters served as the chair of the ConflictsCommittee of our general partner until Ms. Tomasky's appointment to the role in November 2012 and serves as the chair and financial expert ofthe Audit Committee of our general partner. Mr. Peters has served as the Chief Financial Officer of Green Plains Inc., a publicly-traded vertically-integrated ethanol producer, since May 2007. Prior to that, Mr. Peters served as Senior Vice President—Chief Accounting Officer for ONEOKPartners from May 2006 to April 2007, as Chief Financial Officer of ONEOK Partners, L.P. from July 1994 to May 2006, and in various seniormanagement roles of ONEOK Partners, L.P. from 1985 to May 2006. Prior to joining ONEOK Partners, Mr. Peters was employed by KPMG LLPas a certified public accountant from 1980 to 1985. Mr. Peters received an MBA from Creighton University with an emphasis in finance and a B.S.in Business Administration from the University of Nebraska Lincoln. We believe that Mr. Peters' extensive executive, financial and operationalexperience bring important and necessary skills to the board of directors.120Table of ContentsScott A. Rogan has served as a director of our general partner since February 2014 and was appointed to the board in connection with hisaffiliation with Energy Capital Partners. Mr. Rogan joined Energy Capital Partners as a principal in February 2014. Prior to joining Energy CapitalPartners, and for the past five years, Mr. Rogan was employed by Barclays Capital ("Barclays") as a Managing Director working in the investmentbanking division of the natural resources group. Prior to its merger with Barclays in 2008, Mr. Rogan worked for over 10 years in investmentbanking for Lehman Brothers. Mr. Rogan received a bachelor’s degree in business administration and a master’s degree in professional accountingfrom the University of Texas at Austin as well as a master’s degree in business administration from the University of Chicago. Mr. Rogan wasselected to serve as a director on the board due to his affiliation with Energy Capital Partners, his knowledge of the energy industry and hisfinancial and business expertise.Jeffrey R. Spinner has served as a director of our general partner since November 2012 and was appointed to the board in connection with hisaffiliation with Energy Capital Partners. Mr. Spinner has been an investment professional at Energy Capital Partners since 2006. Prior to joiningEnergy Capital Partners, Mr. Spinner worked in the Natural Resources Investment Banking Group at Banc of America Securities. Mr. Spinnerreceived a B.S. in Economics from Duke University. Mr. Spinner was selected to serve as a director on the board due to his affiliation with EnergyCapital Partners, his knowledge of the energy industry and his financial and business expertise.Susan Tomasky has served as a director of our general partner since November 2012. Additionally, Ms. Tomasky serves as the chair of theConflicts Committee of our general partner. Ms. Tomasky was a senior executive for 13 years at American Electric Power, one of the nation’slargest electric utilities, serving from 2009 to 2011 as President of the company’s transmission business, from 2007 through 2008 as ExecutiveVice President for Shared Services, from 2001 until 2007 as Executive Vice President and Chief Financial Officer, and from 1998 until 2001 asGeneral Counsel. Ms. Tomasky currently serves as a director of two other public companies—Tesoro Corp. and Public Service Enterprise Group.Ms. Tomasky holds a juris doctorate degree from George Washington University National Law Center, and received her undergraduate degree fromUniversity of Kentucky in Lexington. Ms. Tomasky's extensive executive, financial, legal and regulatory experience bring important and necessaryskills to the board of directors.Robert M. Wohleber has served as a director of our general partner since August 2013. Mr. Wohleber served as Senior Vice President and ChiefFinancial Officer of Kerr-McGee Corporation, an oil and gas exploration and production company, from December 1999 to August 2006. From 1996to 1998, he served as Senior Vice President and Chief Financial Officer of Freeport-McMoran, Inc., one of the largest phosphate fertilizerproducers in the United States. He holds a B.B.A. from the University of Notre Dame and an M.B.A. from the University of Pittsburgh. Mr.Wohleber's extensive executive and financial experience in the oil and gas industry bring important and necessary skills to the board of directors.Code of EthicsThe board of directors of our general partner has adopted a Code of Business Conduct and Ethics which sets forth SMLP’s policy with respect tobusiness ethics and conflicts of interest. The Code of Business Conduct and Ethics is intended to ensure that the employees, officers anddirectors of SMLP conduct business with the highest standards of integrity and in compliance with all applicable laws and regulations. It applies tothe employees, officers and directors of SMLP, including its principal executive officer, principal financial officer and principal accounting officer orcontroller, or persons performing similar functions (the "Senior Financial Officers"). The Code of Business Conduct and Ethics also incorporatesexpectations of the Senior Financial Officers that enable us to provide accurate and timely disclosure in our filings with the SEC and other publiccommunications. The Code of Business Conduct and Ethics is publicly available on our website under the "Corporate Governance" subsection ofthe Investors section at www.summitmidstream.com and is also available free of charge on request to the Secretary at the Dallas office addressgiven under the "Contact" section on our website.Corporate Governance GuidelinesOur Corporate Governance Guidelines, which are available on our website under the “Corporate Governance” subsection of the “Investors” sectionat www.summitmidstream.com, provide that (i) Jerry L. Peters, as the chairman of our Audit Committee, shall preside over any executivesessions, and (ii) interested parties may communicate directly with our independent directors by submitting a specially marked envelope to theSecretary of our general partner.121Table of ContentsSection 16(a) Beneficial Ownership Reporting ComplianceSection 16(a) of the Exchange Act requires SMLP's directors and executive officers, and persons who own more than 10% of a registered class ofour securities, to file with the SEC initial reports of ownership and reports of changes in ownership of SMLP's common units and other equitysecurities. Based on our records, we believe that all directors, executive officers and persons who own more than 10% of our common units havecomplied with the reporting requirements of Section 16(a).Item 11. Executive Compensation.This Compensation Discussion and Analysis (“CD&A”) provides information regarding the compensation of our named executive officers (“NEOs”)as reported in the Summary Compensation Table and other tables in this document. In this CD&A, we review the compensation decisions andrationale for those decisions relating to our principal executive officer, principal financial officer and our next three most highly compensatedexecutive officers.The following describes the material components of our executive compensation program for the following individuals, who are referred to as the"Named Executive Officers" or “NEOs”:•Steven J. Newby, President and Chief Executive Officer•Matthew S. Harrison, Senior Vice President and Chief Financial Officer•Brad N. Graves, Senior Vice President and Chief Commercial Officer•Rene L. Casadaban, Senior Vice President and Chief Operations Officer•Brock M. Degeyter, Senior Vice President, General Counsel and Chief Compliance OfficerThe NEOs are employees of Summit Investments and executive officers of our general partner. The NEOs devote a majority of their working timeto SMLP's business. They also maintain responsibilities for Summit Investments and its affiliates other than us. Under the terms of ourpartnership agreement, our general partner determines the portion of the NEOs' compensation that is allocated to us. The CompensationCommittee of the Board of Directors of our general partner (the “Board”) provides oversight, administers and makes decisions regarding ourcompensation policies and plans.Compensation Philosophy and ObjectivesWe seek to provide reasonable and competitive rewards to executives through compensation and benefit programs structured to:•Attract and retain outstanding talent•Drive achievement of short-term and long-term goals•Reward successful execution of objectives•Reinforce company culture and leadership competencies•Align executives with the interests of our unitholdersWe employ a pay-for-performance philosophy when designing executive compensation opportunities. Thus, a portion of an executive’s targetcompensation should be performance based through linkage to the achievement of financial and other measures deemed to be drivers in thecreation of unitholder value. While the Compensation Committee does not set a specific target allocation among the elements of total directcompensation, most of the compensation opportunity available to each of our NEOs is, by design, contingent on the Partnership’s annual andlong-term performance.Compensation of Named Executive OfficersThe Compensation Committee establishes the target total direct compensation of our executives and administers other benefit programs. TheCompensation Committee engaged BDO USA, L.L.P. as its independent compensation consultant (the "Compensation Consultant"). TheCompensation Consultant provides the Compensation Committee with data, analysis and advice on the structure and level of executivecompensation. The Compensation Consultant participates in Compensation Committee meetings and executive sessions of the CompensationCommittee meetings as requested. The Compensation Consultant may work with our management on various matters for which the CompensationCommittee is responsible. However, the Compensation Committee, not management, directs the activities of the Compensation Consultant. Weconsider the Compensation Consultant122Table of Contentsto be independent of the Partnership according to current NYSE listing requirements and SEC guidance.Partnership management, in consultation with the Compensation Committee chair and the Compensation Consultant, prepares materials for theCompensation Committee relevant to matters under consideration by the Compensation Committee, including market data provided by theCompensation Consultant and recommendations of our Chief Executive Officer (the "CEO") regarding compensation of the other executives. TheCompensation Committee works directly with the Compensation Consultant on our CEO’s compensation as required.Based on market data which we use as a reference, we believe compensation of our NEOs is reasonably competitive with opportunities availableto officers holding similar positions at other comparable midstream partnerships and limited liability companies. We seek to set compensationlevels for each component of total direct compensation based on our assessment of market practices at or near the median. The CompensationCommittee adjusts target compensation for each NEO above or below the median, taking into consideration experience, performance, internalequity and other relevant circumstances.During the Compensation Committee’s annual review of executive compensation, the Compensation Consultant provided the CompensationCommittee with an analysis of positions comparable to the NEOs at peer companies. To develop these exhibits, information from peer companypublic filings was compiled, including public company proxy statements and annual reports on Form 10-K. The peer group used for 2014 executivecompensation consisted of sixteen publicly traded midstream partnerships and limited liability companies with whom we compete for executivetalent.The peer group comprised the following companies:Access Midstream Partners, L.P. American Midstream Partners, L.P.Atlas Pipeline Partners, L.P. Boardwalk Pipeline Partners, L.P.Crestwood Equity Partners L.P. Crosstex Energy, L.P.*DCP Midstream Partners, L.P. Eagle Rock Energy Partners, L.P.Genesis Energy, L.P. Markwest Energy Partners, L.P.Niska Gas Storage Partners LLC NuStar Energy L.P.PVR Partners, L.P. Regency Energy Partners L.P.Southcross Energy Partners, L.P. Targa Resources Partners, L.P.__________* Now known as EnLink Midstream Partners, LPThe compensation analysis encompassed the primary components of total direct compensation, including annual base salary, annual short-termincentive and long-term incentive awards for the NEOs of these peer group companies. The Compensation Committee considered the informationprovided to ascertain whether the compensation of our NEOs is aligned with our compensation philosophy and competitive with the compensationfor executive officers of the peer group companies. The Compensation Committee reviewed the compensation analysis to confirm that ourcompensation programs were supporting a competitive total compensation approach that emphasizes incentive-based compensation andappropriately rewards achievement of our objectives. For 2014, the target total direct compensation for the NEOs as set by the CompensationCommittee is summarized below. Each element is further discussed in this CD&A.123Table of ContentsName and Principal Position BaseSalary ($) 2014 TargetAnnual Bonus:Percent of BaseSalary (%) 2014 Target LTIPAward: % of BaseSalary (%) 2014 LTIP TargetAward Value ($) 2014 Target TotalDirectCompensation ($)Steven J. NewbyPresident and Chief Executive Officer 475,000 100 225 1,068,750 2,018,750Matthew S. HarrisonSenior Vice President and Chief Financial Officer 340,000 75 125 425,000 1,020,000Brad N. GravesSenior Vice President and Chief CommercialOfficer 325,000 75 125 406,250 975,000Rene L. CasadabanSenior Vice President and Chief OperationsOfficer 305,000 75 125 381,250 915,000Brock M. DegeyterSenior Vice President, General Counsel and ChiefCompliance Officer 305,000 75 125 381,250 915,000Components of Executive CompensationThe primary elements of compensation for the NEOs are base salary, annual incentive compensation and long-term equity-based compensationawards. The NEOs also receive certain retirement, health, welfare and additional benefits.Base Salary. The base salaries for our NEOs are reviewed annually by the Compensation Committee. Base salaries for our NEOs have generallybeen set at levels deemed necessary to attract and retain individuals with superior talent. In January 2014, Mr. Degeyter’s salary was adjusted inconnection with the renewal of his employment agreement. In addition, Messrs. Newby, Graves and Casadaban received base salary adjustmentsin March 2014. The salary adjustments were made to better align the base salaries of these NEOs with salary levels of comparable positions inour peer group. The individual performance of the NEOs was also a factor in making the salary adjustments. The base salaries of our NEOs, aportion of which are allocated to and reimbursed by the Partnership, are set forth in the following table:Name and Principal Position 2014 BaseSalary ($) Steven J. NewbyPresident and Chief Executive Officer 475,000 Matthew S. HarrisonSenior Vice President and Chief Financial Officer 340,000 Brad N. GravesSenior Vice President and Chief Commercial Officer 325,000 Rene L. CasadabanSenior Vice President and Chief Operations Officer 305,000 Brock M. DegeyterSenior Vice President, General Counsel and Chief Compliance Officer 305,000(1)___________(1) Salary adjusted from $250,000 to $305,000 in January 2014.Annual Incentive Compensation. We provide an annual incentive bonus (“annual bonus”) to drive the achievement of key business results and torecognize NEOs based on their contributions to those results. The annual bonus plan is a cash-based incentive plan. Incentive amounts areintended to provide total cash compensation near the market range for executive officers in comparable positions when target performance isachieved. Annual bonus compensation levels are set above or below the market range to reflect actual performance results as appropriate whenperformance is greater or less than expectations. Annual bonus payouts may range from 0% to 150% of the target opportunity and may beadjusted at the discretion of the Compensation Committee.124Table of ContentsIn March 2014, the Compensation Committee established the 2014 annual bonus plan target opportunities as a percentage of base salary for ourNEOs. These target percentages, shown below, were unchanged from the 2013 targets.Name and Principal Position 2014 Target AnnualBonus: Percent of BaseSalary (%) 2014 Target Bonus:Dollar Value ($)Steven J. NewbyPresident and Chief Executive Officer 100 475,000Matthew S. HarrisonSenior Vice President and Chief Financial Officer 75 255,000Brad N. GravesSenior Vice President and Chief Commercial Officer 75 243,750Rene L. CasadabanSenior Vice President and Chief Operations Officer 75 228,750Brock M. DegeyterSenior Vice President, General Counsel and Chief Compliance Officer 75 228,750In 2014, quantitative factors, as reflected in the corporate scorecard applicable to the senior leadership team (the "SLT Scorecard") determined atleast one-half of the annual bonus for Messrs. Harrison, Graves, Casadaban and Degeyter, while their respective business unit scorecardsaccounted for the remainder (the bonuses determined based on these scorecards were subject to further adjustments as explained below). For Mr.Newby, the SLT Scorecard determined his entire annual bonus for 2014. The SLT Scorecard contained four factors, each of which are consideredby the Board and management as key indicators of the successful execution of our business plan. Those factors included corporate growth,adjusted EBITDA, distributable cash flow per unit and health, safety, environmental, and regulatory goals. Some factors are for all companiesowned by Summit Investments, while other factors are related only to the Partnership.In February 2015, the Compensation Committee and the Board reviewed the SLT Scorecards for 2014 and determined the level of achievement ofeach key objective. While we achieved slightly less than our adjusted EBITDA and health, safety, environmental, and regulatory goals, we didmeet our goal related to distributable cash flow per unit and exceeded our corporate growth goals. Based on these results, it was determined that,for each of the NEOs, 113% of target would be appropriate for the portion of their annual bonuses based on SLT scorecard results.In addition to corporate and business unit results reported on scorecards, additional considerations are applied at the discretion of the CEO, theCompensation Committee, or the Board that may affect the amount of the actual bonus earned. Those considerations include judgments regardingoverall company performance and business events, industry climate and performance, demonstrated leadership capabilities, and progress onstrategic initiatives.Mr. Newby’s annual bonus payout reflects consideration for achievement of key growth goals. The total bonus payout awarded to Mr. Newby was$475,000, which is 100% of his target annual bonus for 2014.Mr. Harrison’s annual bonus payout reflects consideration for the combined performance results of the enterprise technology, finance, andaccounting business units. The total amount awarded to Mr. Harrison reflects 106% of his target annual bonus in 2014, or $270,000.Mr. Graves’ annual bonus payout reflects consideration for performance results of the business development business unit. The total amountawarded to Mr. Graves reflects 109% of his target annual bonus in 2014, or $265,000.Mr. Casadaban’s annual bonus payout reflects consideration for the combined performance results of the engineering, construction and operationsbusiness units. The total amount awarded to Mr. Casadaban reflects 90% of his target annual bonus in 2014, or $205,000.Mr. Degeyter’s annual bonus payout reflects consideration for the performance results of the legal and regulatory business unit. The total amountawarded to Mr. Degeyter reflects 114% of his target annual bonus in 2014, or $260,000.Only a portion of the NEOs' annual bonus amounts are allocated to and reimbursed by the Partnership. For a discussion of the cost allocationmethodology, please refer to "General and Administrative Expenses Allocation" in125Table of ContentsItem 13. Certain Relationships and Related Transactions, and Director Independence. Based on the foregoing discussion, the annual bonus awardsto be paid in March 2015 to our NEOs for 2014 performance are as follows:Name and Principal Position 2014 Annual BonusPayout ($)Steven J. NewbyPresident and Chief Executive Officer 475,000Matthew S. HarrisonSenior Vice President and Chief Financial Officer 270,000Brad N. GravesSenior Vice President and Chief Commercial Officer 265,000Rene L. CasadabanSenior Vice President and Chief Operations Officer 205,000Brock M. DegeyterSenior Vice President, General Counsel and Chief Compliance Officer 260,000Long-Term Equity-Based Compensation Awards. Our general partner approved the SMLP LTIP pursuant to which eligible officers (including theNEOs), employees, consultants and directors of our general partner and its affiliates are eligible to receive awards with respect to our equityinterests, thereby linking the recipients' compensation directly to SMLP's performance. The SMLP LTIP provides for the grant, from time to time atthe discretion of the Board or Compensation Committee of our general partner, of unit awards, restricted units, phantom units, unit options, unitappreciation rights, distribution equivalent rights, profits interest units and other unit-based awards.The SMLP LTIP is designed to promote our interests, as well as the interests of our unitholders, by rewarding eligible officers, employees,consultants and directors for delivering desired performance results, as well as by strengthening our ability to attract, retain and motivate qualifiedindividuals to serve as directors, consultants and employees.In February 2014, in an effort to bring the Partnership’s equity awards in line with its peer group and make the award amounts internally consistentacross its employee population, our Compensation Committee adopted SMLP LTIP award guidelines. Generally, the SMLP LTIP award guidelinesprovide that certain high-performing employees will be eligible to receive long-term equity awards each year in an amount equal to a specifiedpercentage of the employee’s base salary based on the employee’s position. The Compensation Committee may, in its discretion, grant a greateror lesser amount of equity awards if deemed appropriate.SMLP LTIP award guidelines for NEOs were determined using the Compensation Consultant's analysis for individuals in comparable positions andan analysis of the scope of their roles and duties. These guidelines were applicable to our NEOs starting in 2014, and provided for a targetedannual equity award in the amount of 125% of base salary for each of our NEOs other than Mr. Newby, whose targeted annual equity award was225% of his base salary.On March 15, 2014, based on the recommendation of the Compensation Committee, the Board approved a grant of phantom units to the NEOs.The underlying phantom units vest ratably over a three-year period. Holders of phantom units are entitled to distribution equivalent rights for eachphantom unit, providing for a lump sum payment equal to the accrued distributions from the grant date of the phantom units to be paid in cashupon the vesting date. The Compensation Committee selected equity awards that vest contingent on continued service to foster increased unitownership by the NEOs and as a retention incentive for continued employment with the Partnership.All SMLP LTIP grants to our NEOs are subject to accelerated vesting on the occurrence of any of the following events: (i) a termination of theNEO's employment other than for cause, (ii) a termination of the NEO's employment by the officer for good reason (as defined in the NEO'semployment agreement), (iii) a termination of the NEO's employment by reason of the NEO's death or disability or (iv) a Change in Control (asdefined in the applicable award agreement).126Table of ContentsTo calculate the number of phantom units granted to each NEO, the Compensation Committee determined the dollar amount of the long-termincentive compensation award, and then granted the number of phantom units that had a fair market value equal to that amount on the date ofgrant. Phantom unit awards granted in March 2014 were as follows:Name and Principal Position 2014 TargetSMLP LTIP Award: %ofBase Salary (%) 2014Phantom UnitsAwarded (#) 2014 SMLP LTIPAward Value ($)Steven J. NewbyPresident and Chief Executive Officer 225 28,369 1,200,000Matthew S. HarrisonSenior Vice President and Chief Financial Officer 125 14,776 625,000Brad N. GravesSenior Vice President and Chief Commercial Officer 125 15,367 650,000Rene L. CasadabanSenior Vice President and Chief Operations Officer 125 13,003 550,000Brock M. DegeyterSenior Vice President, General Counsel and Chief Compliance Officer 125 14,185 600,000Retirement, Health and Welfare and Additional Benefits. The NEOs are eligible to participate in such employee benefit plans and programs aswe offer to our employees, subject to the terms and eligibility requirements of those plans.401(k) Plan. The NEOs are eligible to participate in a tax qualified 401(k) defined contribution plan to the same extent as all of our otheremployees. In 2014, we made a fully vested matching contribution on behalf of each of the 401(k) plan's participants up to 5% of such participant'seligible salary for the year.Health Savings Account ("HSA") Program. In 2014, we implemented an HSA program. Employees that were enrolled in the High Deductible HealthPlan effective September 2014 are eligible to participate in the HSA. The HSA is a tax-free savings account owned by an individual and can beused to pay for current or future qualified medical expenses. Employees determine how much to contribute, when and how to spend the money oneligible medical expenses, and how to invest the balance. The balance remains in the account and is not subject to forfeiture. The Partnershipmakes annual contributions to all HSA-eligible employees who enroll in an HSA. In 2014, the Partnership made tax-free HSA contributions of $500to each NEO.Deferred Compensation Plan. Effective July 1, 2013, the Board approved a Deferred Compensation Plan (the “DCP”), which is a definedcontribution supplemental executive retirement plan established to attract and retain key employees and directors by providing participants with anopportunity to defer receipt of a portion of their salary, bonus, and other specified compensation. The DCP is an unfunded, nonqualified plan thatprovides each participant in the plan with benefits based on the participant’s notional account balance at the time of retirement or termination.Each participant allocates deferrals among designated mutual fund investments to serve as indices for the purpose of determining notionalinvestment gains and losses to each participant’s account.Deferrals of SMLP LTIP grants and other equity-based awards are allocated to the Summit Midstream Partners, LP Unit Fund (the “Unit Fund”).The Unit Fund consists of notional common units in SMLP, with each unit approximating the value of one common unit of SMLP. The distributionequivalent rights associated with any SMLP LTIP grant may be allocated to any available investment option, other than the Unit Fund. Mr. Gravesis the only NEO who made a DCP deferral election for 2014.The DCP is filed as Exhibit 10.1 to the Partnership’s Current Report on Form 8-K filed on July 3, 2013.Tax Preparation and Advisory Services. Pursuant to the terms of their employment agreements, Messrs. Newby, Harrison and Degeyter areentitled to reimbursement for tax preparation and advisory services expenses of up to $10,000 per year. Expenditures for these additional benefitsare disclosed by individual in footnote 5 to the Summary Compensation Table.Employment and Severance Arrangements. Our NEOs each have employment agreements with Summit Investments. Elements of the NEOs’total direct compensation are subject to periodic review and may be adjusted accordingly by the Compensation Committee.127Table of ContentsMr. Newby's employment agreement, which was amended and restated as of August 13, 2012, has an initial term of three years, and is thenautomatically extended for successive one-year periods, unless either party gives notice of non-extension to the other no later than 90 days priorto the expiration of the then-applicable term. Mr. Newby’s employment agreement provides that he will be nominated for re-election to the board ofdirectors of Summit Investments at any time his board membership expires. Mr. Newby's employment agreement provides for an annual basesalary of $400,000 (which has since been increased to $475,000), and a performance-based bonus ranging from 0% to 150% of base salary, with atarget of 100% of his base salary. Mr. Newby is entitled to receive a prorated annual bonus (based on target) if his employment is terminated bySummit Investments without cause or due to death or disability. In addition, Mr. Newby's employment agreement also provided for annual medicalexamination reimbursement and company-paid tax preparation and advisory services of up to $10,000 per year.Mr. Newby's employment agreement provides for a cash severance payment upon a termination by Summit Investments without cause or by Mr.Newby for good reason, which is defined generally as Mr. Newby's termination of employment within two years after the occurrence of (i) a materialdiminution in Mr. Newby's authority, duties or responsibilities, (ii) a material diminution in Mr. Newby's base salary, target bonus (as a percentageof base salary) or annual bonus range (as a percentage of base salary), (iii) a material change in the geographic location at which Mr. Newby mustperform his services under the agreement, (iv) a change in Mr. Newby’s reporting relationship resulting in Mr. Newby no longer reporting directly tothe Board or (v) any other action or inaction that constitutes a material breach of the employment agreement by Summit Investments (each a"Qualifying Termination"). In the event of a Qualifying Termination other than in the period beginning six months prior to a change in control ofSummit Investments and ending on the 12-month anniversary of such a change in control, Mr. Newby's severance payment will be equal to thesum of his annual base salary and his annual bonus payable in respect of the immediately preceding year, payable in equal installments over theperiod beginning on the date of termination and ending on the first anniversary of the date of termination. If a Qualifying Termination occurs duringthe period beginning six months prior to a change in control and ending on the 12-month anniversary of such a change in control, Mr. Newby'sseverance payment will increase to two times the sum of his annual base salary and his annual bonus payable in respect of the immediatelypreceding year, payable in equal installments over the period beginning on the date of termination and ending on the second anniversary of thedate of termination.Following any termination of employment other than one resulting from non-extension of the term, his employment agreement provides that Mr.Newby will be subject to a one-year, post-termination, non-competition covenant and a one-year, post-termination, non-solicitation covenant.If Mr. Newby's employment is terminated due to non-extension of the term, he will be subject to a one-year, post-termination, non-solicitationcovenant, and Summit Investments may choose to subject him to a non-competition covenant for up to one year post-termination. If SummitInvestments exercises this non-compete option, Mr. Newby would be entitled to a severance payment in an amount equal to the sum of his annualbase salary and his annual bonus payable in respect of the immediately preceding year, multiplied by a fraction, the numerator of which is equal tothe number of days from the date of termination through the expiration of the restricted period (as elected by Summit Investments) and thedenominator of which is 365. In this case, the severance payment will be payable in equal installments over the restricted period.Mr. Newby's employment agreement also provides that all SMLP LTIP awards granted to him and held by him immediately prior to a change incontrol will become fully vested immediately prior to the change in control.Mr. Newby's employment agreement provides that, if any portion of the payments or benefits provided to him would be subject to the excise taximposed in connection with Section 280G of the Internal Revenue Code, then the payments and benefits will be reduced if such reduction wouldresult in a greater after-tax payment to Mr. Newby.Mr. Harrison's employment agreement, which was amended and restated as of September 13, 2013, has an initial term of two years, and is thenautomatically extended for successive one-year periods, unless either party gives notice of non-extension to the other no later than 90 days priorto the expiration of the then-applicable term. Mr. Harrison's employment agreement provides for an annual base salary of $340,000, and aperformance-based bonus ranging from 0% to 150% of base salary, with a target of 75% of base salary. Mr. Harrison is entitled to receive aprorated annual bonus (based on target) if his employment is terminated by Summit Investments without cause or due to death or disability. Inaddition, Mr. Harrison's employment agreement also provided for a signing bonus, reimbursement of certain expenses incurred in connection withhis relocation to Atlanta, Georgia and company-paid tax preparation and advisory services of up to $10,000 per year.Mr. Harrison's employment agreement provides for a cash severance payment upon a termination by Summit Investments without cause or by Mr.Harrison for good reason, which is defined generally as Mr. Harrison's termination of employment within two years after the occurrence of (i) amaterial diminution in Mr. Harrison's128Table of Contentsauthority, duties or responsibilities, (ii) a material diminution in Mr. Harrison's base salary, target bonus (as a percentage of base salary) or annualbonus range (as a percentage of base salary, (iii) a material change in the geographic location at which Mr. Harrison must perform his servicesunder the agreement or (iv) any other action or inaction that constitutes a material breach of the employment agreement by Summit Investments(each a "Qualifying Termination"). In the event of a Qualifying Termination other than in the period beginning six months prior to a change in controlof Summit Investments and ending on the 12-month anniversary of such a change in control, Mr. Harrison's severance payment will be equal tothe sum of his annual base salary and his annual bonus payable in respect of the immediately preceding year. If a Qualifying Termination occursduring the period beginning six months prior to a change in control and ending on the 12-month anniversary of such a change in control, Mr.Harrison's severance payment will increase to one and one-half times the sum of his annual base salary and his annual bonus payable in respectof the immediately preceding year. Mr. Harrison’s severance payment will be payable in equal installments over the period beginning on the date oftermination and ending on the first anniversary of the date of termination following termination.Following any termination of employment other than one resulting from non-extension of the term, his employment agreement provides that Mr.Harrison will be subject to a one-year, post-termination, non-competition covenant and one-year, post-termination, non-solicitation covenant.If Mr. Harrison's employment is terminated due to non-extension of the term, he will be subject to a one-year, post-termination, non-solicitationcovenant, and Summit Investments may choose to subject him to a non-competition covenant for up to one year post-termination. If SummitInvestments exercises this non-compete option, then Mr. Harrison would be entitled to a severance payment in an amount equal to the sum of hisannual base salary and his annual bonus payable in respect of the immediately preceding year, multiplied by a fraction, the numerator of which isequal to the number of days from the date of termination through the expiration of the restricted period (as elected by Summit Investments) andthe denominator of which is 365. In this case, the severance payment will be payable in equal installments over the restricted period.Following any termination of employment by Summit Investments without cause or by Mr. Harrison for good reason, Summit Investments hasagreed to pay the excess of the out-of pocket premium cost over such costs for active employees to continue Mr. Harrison's medical and dentalcoverage for a period not to exceed 18 months, with such coverage terminating if any new employer provides benefits coverage.Mr. Harrison's employment agreement also provides that all SMLP LTIP awards granted to him and held by him immediately prior to a change incontrol will become fully vested immediately prior to the change in control.Mr. Harrison's employment agreement provides that, if any portion of the payments or benefits provided to him would be subject to the excise taximposed in connection with Section 280G of the Internal Revenue Code, then the payments and benefits will be reduced if such reduction wouldresult in a greater after-tax payment to Mr. Harrison.Mr. Graves' employment agreement, which was amended and restated as of March 8, 2012, is substantially similar to Mr. Harrison's employmentagreement, except that (i) it provides for an annual base salary of $275,000 (which has since been increased to $325,000), (ii) it does not providefor a prorated annual bonus upon termination of employment, (iii) it does not provide for company-paid tax preparation and advisory services orrelocation expenses, (iv) it does not provide for enhanced severance benefits upon a termination in the change-in-control context and (v) it doesnot provide for company-paid continued benefits coverage following termination of employment.Mr. Casadaban's employment agreement, which was amended and restated as of September 19, 2012, is substantially similar to Mr. Graves’employment agreement, except that it provides for an annual base salary of $250,000 (which has since been increased to $305,000).Mr. Degeyter's employment agreement, which was amended and restated as of January 18, 2014, is substantially similar to Mr. Harrison'semployment agreement, except that (i) it provides for an annual base salary of $305,000 and (ii) it does not provide for the reimbursement ofrelocation expenses.In addition, while not covered in their employment agreements, we have also agreed that: (i) following any termination of employment by SummitInvestments without cause or by the employee for good reason, Messrs. Newby, Graves and Casadaban will receive the excess of the out-of-pocket premium cost over such costs for active employees to continue their medical and dental coverage for a period not to exceed 18 months,with such coverage terminating if any new employer provides benefits coverage; and (ii) Messrs. Graves and Casadaban will receivereimbursement for tax preparation and advisory services expenses of up to $10,000 per year. Risk Assessment Relative to Compensation Programs. The Compensation Committee manages risk as it relates to our compensation plans,programs and structure (collectively, our “compensation practices”). The129Table of ContentsCompensation Committee meets with management to review whether any aspect of our compensation practices create incentives for ouremployees to take inappropriate risks that could materially adversely affect the Partnership. Accordingly, we believe that the compensationpractices for our NEOs and other employees are appropriately structured and do not pose a material risk to the Partnership. We believe thesecompensation practices are designed and implemented in a manner that does not promote excessive risk-taking that could damage the value ofthe Partnership or provide compensatory rewards for inappropriate decisions or behavior.Compensation Committee Report. The Compensation Committee has reviewed and discussed this CD&A with our management and, based onsuch review and discussion, has recommended to the Board that the CD&A be included in the Annual Report on Form 10-K.Summary Compensation Table for 2014, 2013 and 2012The following table sets forth certain information with respect to the compensation paid to our NEOs for the years ended December 31, 2014, 2013and 2012. For 2014 and 2013, the amounts shown in the summary compensation table below have been allocated to us by our general partner.Under the terms of our partnership agreement, our general partner determines the portion of the NEOs' compensation that is allocated to us. For2012, the amounts shown in the summary compensation table below generally reflect 100% of the compensation paid to the NEOs by thePredecessor prior to our IPO and the portion of the compensation paid to the NEOs and allocated to us by the general partner for the periodfollowing our IPO. For a discussion of the cost allocation methodology, please refer to "Agreements with Affiliates—Reimbursement of Expensesfrom General Partner" in Item 13. Certain Relationships and Related Transactions, and Director Independence.Name and Principal Position Year Salary ($) (1) Bonus ($) (2) Equity Awards($) (3) Non-EquityIncentive PlanCompen-sation($)(4) All OtherCompen-sation ($) (5) Total ($)Steven J. NewbyPresident and Chief ExecutiveOfficer 2014 237,500 — 1,200,000 237,500 16,490 1,691,490 2013 280,000 — 900,000 332,500 12,845 1,525,345 2012 354,673 — 350,000 393,738 7,500 1,105,911Matthew S. HarrisonSenior Vice President and ChiefFinancial Officer 2014 238,000 — 625,000 185,500 21,965 1,070,465 2013 261,907 — 400,000 225,250 42,251 929,408 2012 278,872 — 295,000 236,332 27,116 837,320Brad N. GravesSenior Vice President and ChiefCommercial Officer (6) 2014 227,500 — 650,000 171,500 21,695 1,070,695 2013 — — — — — — 2012 — — — — — —Rene L. CasadabanSenior Vice President and ChiefOperations Officer (6) 2014 183,000 — 550,000 129,000 18,727 880,727 2013 — — — — — — 2012 — — — — — —Brock M. DegeyterSenior Vice President, GeneralCounsel and Chief ComplianceOfficer 2014 213,500 — 600,000 171,500 21,965 1,006,965 2013 225,250 63,750 375,000 208,250 13,388 885,638 2012 221,983 75,000 1,140,000 231,635 5,097 1,673,715___________(1) Amounts shown in 2014 and 2013 represent the portion of the NEO's base salary allocated to SMLP. The amounts shown for 2012 represent that portionof the NEO's base salary paid by the Predecessor prior to the IPO and the portion allocated to SMLP after the IPO.(2) Amounts shown in 2013 and 2012 relate to Mr. Degeyter's signing bonus. The signing bonus for Mr. Degeyter was provided for in his employmentagreement and paid by Summit Investments. The amount shown in 2013 represents the portion of Mr. Degeyter's signing bonus allocated to SMLP. Theamount shown for 2012 was paid by the Predecessory prior to the IPO.(3) Amounts shown for 2014 and 2013 reflect the grant date fair value of the phantom unit awards granted to the NEOs in March 2014 and March 2013,respectively, in accordance with Financial Accounting Standards Board Accounting Standards130Table of ContentsCodification Topic 718, Compensation—Stock Compensation ("FASB ASC Topic 718"). Amounts shown for 2012 reflect the grant date fair value of (i) thephantom unit awards granted to the NEOs in connection with the IPO and (ii) the net profits interests granted to Mr. Degeyter in connection with hisemployment, each in accordance with FASB ASC Topic 718. For the assumptions made in valuing these awards, See Note 10 to the audited consolidatedfinancial statements. For additional information, please refer to "Components of Executive Compensation—Long-Term Equity-Based Compensation Awards"above.(4) Amounts shown represent the incentive bonus earned under our annual incentive bonus program in the fiscal year indicated but paid in the followingfiscal year. The amounts shown represent that portion of the NEO's annual bonus that has been allocated to SMLP.(5) The table below presents the components of "All Other Compensation" allocated to SMLP for each NEO for the fiscal year ended December 31, 2014. Foradditional information, please see "Components of Executive Compensation—Retirement, Health and Welfare and Additional Benefits" above.(6) Compensation information is provided only for fiscal year 2014 for the executive officers who were not NEOs in fiscal years 2013 and 2012.All Other Compensation. The following table sets forth information concerning all other compensation paid to our NEOs in fiscal 2014.Name Medical InsurancePremium ($) Individual TaxPreparation andAnnual MedicalExamination ($) Health SavingsAccount (HSA)EmployerContributions ($) 401(k) PlanEmployerContributions ($) Total ($)Steven J. Newby 7,940 1,800 250 8,750 18,740Matthew S. Harrison 11,115 1,400 350 12,250 25,115Brad N. Graves 11,115 1,400 350 9,100 21,965Rene L. Casadaban 9,527 1,200 300 7,700 18,727Brock M. Degeyter 11,115 1,400 350 9,100 21,965Grants of Plan-Based Awards in 2014. The following table sets forth information concerning annual incentive awards and phantom unit awardsgranted to our NEOs in fiscal 2014. Estimated Possible Payouts Under Non-Equity IncentivePlan Awards (1) All Other StockAwards: Numberof Shares ofStocks or Units(2) Grant Date FairValue of Stockand OptionsAwards (3)Name Grant Date Threshold ($) Target ($) Maximum ($) (#) ($)Steven J. Newby N/A N/A 475,000 712,500 3/15/2014 28,369 1,200,000Matthew S. Harrison N/A N/A 255,000 382,500 3/15/2014 14,776 625,000Brad N. Graves N/A N/A 243,750 365,625 3/15/2014 15,367 650,000Rene L. Casadaban N/A N/A 228,750 343,125 3/15/2014 13,003 550,000Brock M. Degeyter N/A N/A 228,750 343,125 3/15/2014 14,185 600,000___________(1) Represents annual incentive opportunities that may be awarded pursuant to our annual incentive program for the year ended December 31, 2014 withpayment contingent upon our achievement of pre-established performance goals. For additional information, please see "Components of ExecutiveCompensation—Annual Incentive Compensation" above.(2) Represents grants of phantom units with distribution equivalent rights under the SMLP LTIP. For additional information, please see "Components ofExecutive Compensation—Long-Term Equity-Based Compensation Awards" above.(3) Amounts shown represent the fair value of the award on the date of the grant, in accordance with FASB ASC Topic 718. For the assumptions made invaluing these awards, see Note 10 to the audited consolidated financial statements.131Table of ContentsNarrative Disclosure to the Summary Compensation Table and Grants of the Plan-Based Awards Table. A description of material factorsnecessary to understand the information disclosed in the tables above with respect to salaries, bonuses, equity awards, non-equity incentive plancompensation and all other compensation can be found in the CD&A that precedes these tables.Outstanding Equity Awards at December 31, 2014. The following table presents information regarding the outstanding equity awards held by ourNEOs at December 31, 2014. Unit AwardsName Grant Date Number of Unearned PhantomUnits That Have Not Vested (#) Market Value of UnearnedPhantom Units That Have NotVested ($) (1)Steven J. Newby 3/15/2014 28,369(2)1,078,022 3/15/2013 23,086(2)877,268 10/3/2012 17,500(3)665,000Matthew S. Harrison 3/15/2014 14,776(2)561,488 3/15/2013 10,260(2)389,880 10/3/2012 14,750(3)560,500Brad N. Graves 3/15/2014 15,367(2)583,946 3/15/2013 9,619(2)365,522 10/3/2012 8,750(3)332,500Rene L. Casadaban 3/15/2014 13,003(2)494,114 3/15/2013 7,695(2)292,410 10/3/2012 8,750(3)332,500Brock M. Degeyter 3/15/2014 14,185(2)539,030 3/15/2013 9,619(3)365,522 10/3/2012 12,500(3)475,000___________(1) Amounts were calculated using the closing price of SMLP's publicly traded common units on December 31, 2014.(2) Phantom units granted to the NEOs in 2014 and 2013 vest ratably over a three-year period with the first tranche scheduled to vest on the first anniversaryof the grant date, subject to continued employment, and accelerated vesting as provided in the applicable award agreement. The NEOs also receivedistribution equivalent rights for each phantom unit, providing for a lump sum payment equal to the accrued distributions from the grant date of the phantomunits to be paid in cash upon the vesting date.(3) Phantom units granted to the NEOs in 2012 in connection with the IPO vest on the third anniversary of the consummation of the IPO, subject to continuedemployment, and accelerated vesting as provided in the applicable award agreement. The NEOs also receive distribution equivalent rights for each phantomunit, providing for a lump sum payment equal to the accrued distributions from the grant date of the phantom units to be paid in cash upon the vesting date.Phantom Units Vested. The following table represents information regarding the vesting of phantom units during the year ended December 31,2014 with respect to our NEOs. Phantom Unit AwardsName Number of PhantomUnits Vested (#) Value Realized on Vesting($)(1)Steven J. Newby 11,543 508,989Matthew S. Harrison 5,131 226,251Brad N. Graves 4,810 212,097Rene L. Casadaban 3,848 169,678Brock M. Degeyter 4,810 212,097___________132Table of Contents(1) Amounts represent the value of the phantom units that vested on March 15, 2014 plus the distribution equivalent rights earned in tandem. The value of thephantom units was calculated using the closing price of SMLP's publicly traded common units as of March 14, 2014, the trading day immediately prior tovesting.Pension Benefits. Currently, our general partner does not sponsor or maintain a pension or defined benefit program for our NEOs. This policy maychange in the future.Nonqualified Deferred Compensation Table for 2014. The following table represents information regarding the nonqualified deferredcompensation of our NEOs for the year ended December 31, 2014.Name ExecutiveContributions inLast fiscal Year ($)(1) RegistrantContributions inLast Fiscal Year ($) AggregateEarnings in LastFiscal Year ($) AggregateWithdrawals/Distributions($) Aggregate Balanceat Last Fiscal Year-End ($)Brad N. Graves 65,510 — 1,922 — 67,432___________(1) Amount is included in the "Summary Compensation Table" for the year 2014. For additional information, see "Components of Executive Compensation—Retirement, Health and Welfare and Additional Benefits" above.Potential Payments upon Termination or Change in Control. The following table sets forth information concerning potential amounts payable tothe NEOs upon termination of employment under various circumstances and upon a change in control if such event took place on December 31,2014.Name andPrincipal Position Triggering Event Salary ($) Bonus ($) Pro-Rata Bonus($) Health Benefits($) Acceleration ofUnvested Equity($) (1) Total ($)Steven J. NewbyPresident andChief ExecutiveOfficer (2) Termination by Reasonof Death or Disability — — 475,000 25,958 2,807,887 3,308,845 Termination WithoutCause 475,000 475,000 475,000 25,958 2,807,887 4,258,845 Resignation for GoodReason 475,000 475,000 — 25,958 2,807,887 3,783,845 Termination WithoutCause during Change InControl Period 950,000 950,000 475,000 25,958 2,807,887 5,208,845 Resignation for GoodReason during Changein Control Period 950,000 950,000 — 25,958 2,807,887 4,733,845 Change in Control (3) — — — — 2,807,887 2,807,887Matthew S.HarrisonSenior VicePresident andChief FinancialOfficer (4) Termination by Reasonof Death or Disability — — 255,000 25,958 1,624,902 1,905,860 Termination WithoutCause 340,000 265,000 255,000 25,958 1,624,902 2,510,860 Resignation for GoodReason 340,000 265,000 — 25,958 1,624,902 2,255,860 Termination WithoutCause during Change InControl Period 510,000 397,500 255,000 25,958 1,624,902 2,813,360 Resignation for GoodReason during Changein Control Period 510,000 397,500 — 25,958 1,624,902 2,558,360 Change in Control (3) — — — — 1,624,902 1,624,902133Table of ContentsBrad N. GravesSenior VicePresident andChiefCommercialOfficer (5) Termination by Reasonof Death or Disability — — — 25,958 1,371,170 1,397,128 Termination WithoutCause 325,000 245,000 — 25,958 1,371,170 1,967,128 Resignation for GoodReason 325,000 245,000 — 25,958 1,371,170 1,967,128 Termination WithoutCause during Change InControl Period 325,000 245,000 — 25,958 1,371,170 1,967,128 Resignation for GoodReason during Changein Control Period 325,000 245,000 — 25,958 1,371,170 1,967,128 Change in Control (3) — — — — 1,371,170 1,371,170Rene L.CasadabanSenior VicePresident andChief OperationsOfficer (6) Termination by Reasonof Death or Disability — — — 25,958 1,198,083 1,224,041 Termination WithoutCause 305,000 215,000 — 25,958 1,198,083 1,744,041 Resignation for GoodReason 305,000 215,000 — 25,958 1,198,083 1,744,041 Termination WithoutCause during Change InControl Period 305,000 215,000 — 25,958 1,198,083 1,744,041 Resignation for GoodReason during Changein Control Period 305,000 215,000 — 25,958 1,198,083 1,744,041 Change in Control (3) — — — — 1,198,083 1,198,083Brock M.DegeyterSenior VicePresident,General Counseland ChiefComplianceOfficer (7) Termination by Reasonof Death or Disability — — 228,750 25,958 1,481,029 1,735,737 Termination WithoutCause 305,000 245,000 228,750 25,958 1,481,029 2,285,737 Resignation for GoodReason 305,000 245,000 — 25,958 1,481,029 2,056,987 Termination WithoutCause during Change InControl Period 457,500 367,500 228,750 25,958 1,481,029 2,560,737 Resignation for GoodReason during Changein Control Period 457,500 367,500 — 25,958 1,481,029 2,331,987 Change in Control (3) — — — 25,958 1,481,029 1,506,987___________(1) Amounts represent the value of the phantom units that vest upon the occurrence of a triggering event plus the earned dividend equivalent rights that vestin tandem. The value of the phantom units was calculated using the closing price of SMLP's publicly traded common units on December 31, 2014.(2) Mr. Newby's employment agreement provides that upon termination of employment by Summit Investments without cause or his resignation for goodreason (each a "Qualifying Termination"), Mr. Newby's severance payment will be equal to the sum of his annual base salary and his annual bonus payablein respect of the immediately preceding year. If a Qualifying Termination occurs within the change in control period beginning six months prior to and endingon the 12-month anniversary of the change in control, Mr. Newby's severance payment will increase to two times the sum of his annual base salary and hisannual bonus134Table of Contentspayable in respect of the immediately preceding year. Mr. Newby is also entitled to receive a prorated annual bonus (based on target) if his employment isterminated by Summit Investments without cause or due to death or disability. Any unvested equity awards granted to Mr. Newby will immediately vest upon aQualifying Termination, termination by reason of death or disability, or a change in control. If any portion of the payments or benefits provided to Mr. Newby inconnection with a change in control become subject to the excise tax under Section 4999 of the Internal Revenue Code, then the payments and benefits willbe reduced to the extent such reduction would result in a greater after-tax benefit to Mr. Newby. While not covered in his employment agreement, we haveagreed that following any termination of employment by Summit Investments without cause or by Mr. Newby for good reason, Mr. Newby will receive theexcess of the out-of-pocket premium cost over such costs for active employees to continue his medical and dental coverage for a period not to exceed 18months, with such coverage terminating if any new employer provides benefits coverage. (3) Single-trigger event without a qualifying termination of employment.(4) Mr. Harrison's employment agreement provides that upon termination of employment by Summit Investments without cause or his resignation for goodreason (each a "Qualifying Termination"), Mr. Harrison's severance payment will be equal to the sum of his annual base salary and his annual bonus payablein respect of the immediately preceding year. If a Qualifying Termination occurs within the change in control period beginning six months prior to and endingon the 12-month anniversary of the change in control, Mr. Harrison's severance payment will increase to one and one-half times the sum of his annual basesalary and his annual bonus payable in respect of the immediately preceding year. Mr. Harrison is also entitled to receive a prorated annual bonus (based ontarget) if his employment is terminated by Summit Investments without cause or due to death or disability. Any unvested equity awards granted to Mr. Harrisonwill immediately vest upon a Qualifying Termination, termination by reason of death or disability, or a change in control. If any portion of the payments orbenefits provided to Mr. Harrison in connection with a change in control become subject to the excise tax under Section 4999 of the Internal Revenue Code,then the payments and benefits will be reduced to the extent such reduction would result in a greater after-tax benefit to Mr. Harrison. Mr. Harrison'semployment agreement also provides that following any termination of employment by Summit Investments without cause or by Mr. Harrison for good reason,Mr. Harrison is entitled to the excess of the out-of-pocket premium cost over such costs for active employees to continue his medical and dental coverage fora period not to exceed 18 months, with such coverage terminating if any new employer provides benefits coverage. (5) Mr. Graves' employment agreement provides that upon termination of employment by Summit Investments without cause or his resignation for goodreason (each a "Qualifying Termination"), Mr. Graves' severance payment will be equal to the sum of his annual base salary and his annual bonus payable inrespect of the immediately preceding year. Any unvested equity awards granted to Mr. Graves will immediately vest upon a Qualifying Termination,termination by reason of death or disability, or a change in control. If any portion of the payments or benefits provided to Mr. Graves in connection with achange in control become subject to the excise tax under Section 4999 of the Internal Revenue Code, then the payments and benefits will be reduced to theextent such reduction would result in a greater after-tax benefit to Mr. Graves. While not covered in his employment agreement, we have agreed that followingany termination of employment by Summit Investments without cause or by Mr. Graves for good reason, Mr. Graves will receive the excess of the out-of-pocket premium cost over such costs for active employees to continue his medical and dental coverage for a period not to exceed 18 months, with suchcoverage terminating if any new employer provides benefits coverage. Mr. Graves also had an aggregate balance of $67,432 under the DCP as of December31, 2014, which will be distributed upon a qualifying triggering event. For additional information, see "Summary Compensation Table for 2014, 2013 and2012—Nonqualified Deferred Compensation Table for 2014" above.(6) Mr. Casadaban's employment agreement provides that upon termination of employment by Summit Investments without cause or his resignation for goodreason (each a "Qualifying Termination"), Mr. Casadaban's severance payment will be equal to the sum of his annual base salary and his annual bonuspayable in respect of the immediately preceding year. Any unvested equity awards granted to Mr. Casadaban will immediately vest upon a QualifyingTermination, termination by reason of death or disability, or a change in control. If any portion of the payments or benefits provided to Mr. Casadaban inconnection with a change in control become subject to the excise tax under Section 4999 of the Internal Revenue Code, then the payments and benefits willbe reduced to the extent such reduction would result in a greater after-tax benefit to Mr. Casadaban. While not covered in his employment agreement, wehave agreed that following any termination of employment by Summit Investments without cause or by Mr. Casadaban for good reason, Mr. Casadaban willreceive the excess of the out-of-pocket premium cost over such costs for active employees to continue his medical and dental coverage for a period not toexceed 18 months, with such coverage terminating if any new employer provides benefits coverage.(7) Mr. Degeyter's employment agreement provides that upon termination of employment by Summit Investments without cause or his resignation for goodreason (each a "Qualifying Termination"), Mr. Degeyter's severance payment will be equal to the sum of his annual base salary and his annual bonuspayable in respect of the immediately preceding year. If a Qualifying Termination occurs within the change in control period beginning six months prior to andending on the 12-month anniversary of the change in control, Mr. Degeyter's severance payment will increase to one and one-half times the sum of hisannual base salary and his annual bonus payable in respect of the immediately preceding year. Mr. Degeyter is also entitled to receive a prorated annualbonus (based on target) if his employment is terminated by Summit Investments without cause or due to death or disability. Any unvested equity awardsgranted to Mr. Degeyter will immediately vest upon a Qualifying Termination, termination by reason of death or disability, or a change in control. If any portionof the payments or benefits provided to Mr. Degeyter in connection with a change in control become subject to the excise tax under Section 4999 of theInternal Revenue Code, then the payments and benefits will be reduced to the extent such reduction would result in a greater after-tax benefit to Mr.Degeyter. Mr. Degeyter's employment agreement also provides that following any termination of employment by Summit Investments without cause or by Mr.Degeyter for good reason, Mr. Degeyter is entitled to the excess of the out-of-pocket premium cost over such costs for active135Table of Contentsemployees to continue his medical and dental coverage for a period not to exceed 18 months, with such coverage terminating if any new employer providesbenefits coverage.Compensation Committee ReportThe Compensation Committee provides oversight, administers and makes decisions regarding our compensation policies and plans. Additionally,the Compensation Committee generally reviews and discusses the Compensation Discussion and Analysis with senior management of our generalpartner as a part of our governance practices. Based on this review and discussion, the Compensation Committee has recommended to the boardof directors of our general partner that the Compensation Discussion and Analysis be included in this report for filing with the SEC.Members of the Compensation Committee of Summit Midstream GP, LLCThomas K. Lane Jeffrey R. Spinner Robert M. WohleberDirector CompensationUnder the director compensation plan in effect at the beginning of January 2014, Mr. Morgan and the independent directors, which include Mr.Peters, Ms. Tomasky and Mr. Wohleber, each receive the following:•an annual cash retainer of $60,000, and•an annual award of common units with a grant date fair value of approximately $70,000.In addition, under the director compensation plan in effect at the beginning of January 2014, the independent directors receive the following for theirrespective service on our Board's committees:•the chairman of the Audit Committee received an additional annual retainer of $15,000;•the chairman of the Conflicts Committee received an additional annual retainer of $7,500;•each independent member of any committee (other than the chairman) received an additional annual retainer of $5,000; and•in connection with the Red Rock Drop Down, in March 2014, we paid the members, other than the chairman, of the Conflicts Committeefees of $10,000 and the chairman of the Conflicts Committee fees of $15,000 each for the increased time and effort that they expended inconnection with their service on the Conflicts Committee, which reviewed the transaction for fairness to the Partnership and itsunitholders.The annual compensation cycle for director service under the director compensation plan in effect at the beginning of January 2014 ran fromOctober to September.In November 2014, the Board amended our director compensation plan to align its compensation cycle with the March-to-February cycle,consistent with that for employees of the Partnership. To compensate the directors for their service between the end of the previous compensationcycle and the current March-to-February cycle, we paid Mr. Morgan and the independent directors pro rata portions of each of the annual retainersfor Board and committee service.Board members are reconsidered for appointment on the one-year anniversary of their most recent appointment.We reimburse all directors, except for employees of Energy Capital Partners for travel and other related expenses in connection with attendingboard and committee meetings and board-related activities. We do not compensate employees of the Partnership or Energy Capital Partners fortheir services as directors.136Table of ContentsThe following table shows the compensation paid, including amounts deferred, under our director compensation plan in 2014.Name Fees earned or paidin cash ($) Other fees ($) Unit awards (1) ($) Compensationdeferred (2) ($) Total ($)Thomas K. Lane — — — — —Christopher M. Leininger — — — — —Curtis A. Morgan 35,000 — 49,167 30,000 54,167Steven J. Newby — — — — —Jerry L. Peters 35,000 21,833 49,167 23,500 82,500Jeffrey R. Spinner — — — — —Susan Tomasky 35,000 23,708 49,167 — 107,875Robert M. Wohleber 35,000 26,750 49,167 — 110,917___________(1) Amount shown represents the grant date fair value of the unit awards as determined in accordance with FASB ASC Topic 718. These unit awards werefully vested on the date of grant.(2) In 2014, Messrs. Morgan and Peters elected to defer receipt of a portion of their compensation related to Board committee service pursuant to the terms ofthe DCP.Compensation Committee Interlocks and Insider ParticipationOur Compensation Committee, consists of Mr. Lane, Mr. Spinner and Mr. Wohleber. Although our common units are listed on the New York StockExchange, we have taken advantage of the “Limited Partnership” exemption to the New York Stock Exchange rule requiring listed companies tohave an independent compensation committee with a written charter. During 2014, no member of the Compensation Committee was an executiveofficer of another entity on whose compensation committee or board of directors any executive officer of Summit Investments (and in connectiontherewith, SMLP) served. During 2014, no director was an executive officer of another entity on whose compensation committee any executiveofficer of Summit Investments (and in connection therewith, SMLP) served.Mr. Newby, who serves as the President and Chief Executive Officer of our general partner, participates in his capacity as a director in thedeliberations of the board of directors concerning named executive officer compensation, and makes recommendations to the CompensationCommittee regarding named executive officer compensation but abstains from any decisions regarding his compensation. Also, Mr. Lane and Mr.Spinner were selected to serve on the Compensation Committee due to their affiliations with Energy Capital Partners, which controls our generalpartner.Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.The following table sets forth certain information regarding the beneficial ownership of our common units of:•each person who is known to us to beneficially own 5% or more of such units to be outstanding (based solely on Schedules 13D and 13Gfiled with the SEC subsequent to December 31, 2014 and prior to February 18, 2014);•our general partner;•each of the directors and NEOs of our general partner; and•all of the directors and NEOs of our general partner as a group.All information with respect to beneficial ownership has been furnished by the respective directors, officers or 5% or more unitholders as the casemay be. The amounts and percentage of units beneficially owned are reported on the basis of regulations of the SEC governing the determinationof beneficial ownership of securities. Under the rules of the SEC, a person is deemed to be a beneficial owner of a security if that person has orshares voting power, which includes the power to vote or to direct the voting of such security, or investment power, which includes the power todispose of or to direct the disposition of such security.In computing the number of common units beneficially owned by a person and the percentage ownership of that person, common units that aperson has the right to acquire upon the vesting of phantom units where the units are issuable within 60 days of February 17, 2015, if any, aredeemed outstanding, but are not deemed outstanding for137Table of Contentscomputing the percentage ownership of any other person. The percentage of units beneficially owned is based on a total of 34,426,513 commonunits, 24,409,850 subordinated units outstanding and 58,836,363 limited partner units outstanding as of February 17, 2015.Except as indicated by footnote, the persons named in the following table have sole voting and investment power with respect to all units shownas beneficially owned by them, subject to community property laws where applicable. Name Of Beneficial Owner Common UnitsBeneficiallyOwned Percentage ofCommon UnitsBeneficially Owned SubordinatedUnits BeneficiallyOwned Percentage ofSubordinated UnitsBeneficially Owned Percentage of TotalCommon andSubordinated UnitsBeneficially OwnedSMP Holdings (1) (2) 5,293,571 15.4% 24,409,850 100.0% 50.5%Energy Capital Partners II, LLC (1) (3) (4) 5,293,571 15.4% 24,409,850 100.0% 50.5%Goldman Sachs Asset Management, L.P. (5) 4,551,492 13.2% — — 7.7%Salient Capital Advisors, LLC (6) 3,292,593 9.6% — — 5.6%Kayne Anderson Capital Advisors, L.P. (7) 2,804,027 8.1% — — 4.8%OppenheimerFunds, Inc. (8) 2,702,254 7.8% — — 4.6%Steven J. Newby (2) (9) (10) 15,940 * — — *Matthew S. Harrison (2) (9) 10,057 * — — *Rene L. Casadaban (2) (9) 8,183 * — — *Brock M. Degeyter (2) (9) 10,479 * — — *Brad N. Graves (2) (9) (10) 10,392 * — — *Thomas K. Lane (4) (11) 40,000 * — — *Christopher M. Leininger (12) — — — — —Curtis A. Morgan (2) (10) 4,602 * — — *Jerry L. Peters (2) 5,075 * — — *Scott A. Rogan (4) — — — — —Jeffrey R. Spinner (4) — — — — —Susan Tomasky (2) 5,152 * — — *Robert M. Wohleber (2) 2,575 * — — *All directors and executive officers as a group(consisting of 13 persons) 112,455 * — — *________* An asterisk indicates that the person or entity owns less than one percent.(1) SMP Holdings owns 100% of our general partner, 15.4% of our outstanding common units and 100.0% of our outstanding subordinated units. EnergyCapital Partners II, LLC ("ECP II") and its parallel and co-investment funds (the "ECP Funds" and together with ECP II, "ECP") hold in the aggregate, 100.0%of the Class A membership interests in Summit Investments, the sole owner of SMP Holdings. ECP II is the general partner of the general partner of each ofthe ECP Funds that holds membership interests in Summit Investments and has voting and investment control over the securities held thereby. Accordingly,ECP may be deemed to indirectly beneficially own the 5,293,571 common units and 24,409,850 subordinated units held by SMP Holdings. The subordinatedunits held by SMP Holdings may be converted into common units on a one-for-one basis after expiration of the subordination period (as defined in thePartnership Agreement).(2) The address for this person or entity is 1790 Hughes Landing Blvd., Suite 500, The Woodlands, Texas 77380.(3) ECP holds 100.0% of the Class A membership interests in Summit Investments, which in turn owns 100% of SMP Holdings and may therefore be deemedto indirectly beneficially own the 5,293,571 common units and 24,409,850 subordinated units held by SMP Holdings. Because of its ownership interest inSummit Investments, ECP is entitled to elect five directors of Summit Investments. In addition, Mr. Lane (who is a managing member of Energy CapitalPartners), Mr. Leininger (who is a managing director of Energy Capital Partners), Mr. Rogan (who is a principal of Energy Capital Partners) and Mr. Spinner(who is a principal of Energy Capital Partners) are each directors of our general partner. Neither Mr. Lane, Mr. Leininger, Mr. Rogan nor Mr. Spinner aredeemed to beneficially own, and they disclaim beneficial ownership of, any common units or subordinated units held by our general partner or SMPHoldings.138Table of Contents(4) The address for this person or entity is 51 John F. Kennedy Parkway, Suite 200, Short Hills, New Jersey 07078.(5) The address for this person or entity is 200 West Street, New York, New York 10282.(6) The address for this person or entity is 4265 San Felipe, 8th Floor, Houston, Texas 77027.(7) The address for this person or entity is 1800 Avenue of the Stars, 3rd Floor, Los Angeles, California 90067.(8) The address for this person or entity is Two World Financial Center, 225 Liberty Street, New York, New York 10281.(9) Includes common units which the individuals have the right to acquire upon vesting of phantom units, where the units are issuable as of February 17,2015 or within 60 days thereafter. Such units are deemed to be outstanding in calculating the percentage ownership of such individual (and all directors andofficers as a group), but are not deemed to be outstanding as to any other person.(10) Excludes vested units for which receipt has been deferred into our Deferred Compensation Plan.(11) Includes 20,000 common units held by Lane Ventures LLC ("Lane Ventures"). Two of Mr. Lane's estate planning trusts collectively own a majority of themembership interests in Lane Ventures and as a result, Mr. Lane may be deemed to indirectly beneficially own the common units held by Lane Ventures.(12) The address for this person is 11943 El Camino Real, Suite 200, San Diego, California 92130.Securities Authorized for Issuance Under Equity Compensation PlansThe following table provides information as of December 31, 2014 with respect to the Partnership's common units that may be issued under the2012 Long-Term Incentive Plan.Plan category Number of securities to beissued upon exercise ofoutstanding options,warrants and rights(a) (1) Weighted-average exerciseprice of outstanding options,warrants and rights(b) Number of securitiesremaining available for futureissuance under equitycompensation plans(excluding securitiesreflected in column (a))(c)Equity compensation plans approved by security holders 336,202 n/a 4,603,209Equity compensation plans not approved by securityholders n/a n/a n/aTotal 336,202 n/a 4,603,209__________(1) Amount shown represents phantom unit awards outstanding under the SMLP LTIP at December 31, 2014. The awards are expected to be settled incommon units upon the applicable vesting date and are not subject to an exercise price.2012 SMLP Long-Term Incentive Plan. In connection with the IPO, our general partner approved the SMLP LTIP, pursuant to which eligibleofficers, employees, consultants and directors of our general partner and its affiliates are eligible to receive awards with respect to our equityinterests. The SMLP LTIP is designed to promote our interests, as well as the interests of our unitholders, by rewarding eligible officers,employees, consultants and directors for delivering desired performance results, as well as by strengthening our ability to attract, retain andmotivate qualified individuals to serve as directors, consultants and employees. A total of 5,000,000 common units was reserved for issuance,pursuant to and in accordance with the SMLP LTIP.The SMLP LTIP is administered by our general partner's board of directors. The SMLP LTIP provides for the grant, from time to time at thediscretion of the board of directors, of unit awards, restricted units, phantom units, unit options, unit appreciation rights, distribution equivalentrights, profits interest units and other unit-based awards. Units that are canceled or forfeited are available for delivery pursuant to other awards.Common units to be delivered with respect to awards may be newly issued units, common units acquired by us or our general partner in the openmarket, common units already owned by our general partner or us, common units acquired by our general partner directly from us or any otherperson or any combination of the foregoing.The general partner's board of directors, at its discretion, may terminate the SMLP LTIP at any time with respect to the common units for which agrant has not previously been made. The SMLP LTIP will automatically terminate on the 10th anniversary of the date it was initially adopted by ourgeneral partner. The general partner's board of directors also has the right to alter or amend the SMLP LTIP or any part of it from time to time or toamend any outstanding award made under the SMLP LTIP, provided that no change in any outstanding award may be made that would materiallyimpair the rights of the participant without the consent of the affected participant.139Table of ContentsItem 13. Certain Relationships and Related Transactions, and Director Independence.As of December 31, 2014, SMP Holdings, which is owned and controlled by Summit Investments, owned 5,293,571 common units and 24,409,850subordinated units, representing a combined 49.5% limited partner interest in us. In addition, SMP Holdings owns and controls our general partner,which owns a 2.0% general partner interest in us and all of our incentive distribution rights.Distributions and Payments to our General Partner and its AffiliatesThe following summarizes the distributions and payments to be made by us to our general partner and its affiliates in connection with our ongoingoperations and our liquidation. These distributions and payments were determined by and among affiliated entities and, consequently, are not theresult of arm's-length negotiations.Operational StageDistributions of available cash to our general partner and its affiliates. Unless distributions exceed the minimum quarterly distribution, wemake cash distributions 98.0% to our unitholders pro rata, including SMP Holdings as the holder of 5,293,571 common units and 24,409,850subordinated units (as of December 31, 2014), and 2.0% to our general partner, assuming it makes any capital contributions necessary to maintainits 2.0% interest in us. In addition, if distributions exceed the minimum quarterly distribution and other higher target distribution levels, our generalpartner, by virtue of its incentive distribution rights, is entitled to increasing percentages of the distributions, up to 50.0% of the distributions abovethe highest target distribution level. Total quarterly distribution per unittarget amount Marginal percentage interest in distributions Unitholders General partnerMinimum quarterly distribution$0.40 98.0% 2.0%First target distribution$0.40 up to $0.46 98.0% 2.0%Second target distributionabove $0.46 up to $0.50 85.0% 15.0%Third target distributionabove $0.50 up to $0.60 75.0% 25.0%Thereafterabove $0.60 50.0% 50.0%For the year ended December 31, 2014, our general partner received distributions of approximately $4.8 million on its 2.0% general partner interestand IDRs and a subsidiary of Summit Investments received distributions of approximately $69.5 million on its common and subordinated units.Payments to our general partner and its affiliates. See "Agreements with Affiliates—Reimbursement of Expenses from General Partner" below.Withdrawal or removal of our general partner. If our general partner withdraws or is removed, its general partner interest and its incentivedistribution rights will either be sold to the new general partner for cash or converted into common units, in each case for an amount equal to thefair market value of those interests.Liquidation StageUpon our liquidation, our partners, including our general partner, will be entitled to receive liquidating distributions according to their particularcapital account balances.Agreements with AffiliatesWe have various agreements with certain of our affiliates, as described below. These agreements have been negotiated among affiliated partiesand, consequently, are not the result of arm's-length negotiations.Reimbursement of Expenses from General Partner. Under our partnership agreement, we reimburse our general partner and its affiliates forcertain expenses incurred on our behalf, including, without limitation, salary, bonus, incentive compensation and other amounts paid to our generalpartner's employees and executive officers who perform services necessary to run our business. Our partnership agreement provides that ourgeneral partner will determine in good faith the expenses that are allocable to us. Operation and maintenance expenses incurred by the generalpartner and reimbursed by us under our partnership agreement were approximately $17.2 million in 2014. General and administrative expensesincurred by the general partner and reimbursed by us under our partnership agreement were approximately $18.8 million in 2014. As of December31, 2014, we had a payable of $2.7 million to the general partner for expenses that were paid on our behalf.140Table of ContentsExpense Allocations. During the period from January 1, 2014 to March 18, 2014, Summit Investments incurred interest expense which wasrelated to capital projects at Red Rock Gathering. As such, the associated interest expense was allocated to Red Rock Gathering as a noncashcontribution and capitalized into the basis of the asset.Certain of Summit Investments’ current and former employees received Class B membership interests, classified as net profits interests, inSummit Investments (the “Net Profits Interests”). The Net Profits Interests participate in distributions upon time vesting and the achievement ofcertain distribution targets to Class A members or higher priority vested Net Profits Interests. The Net Profits Interests were accounted for ascompensatory awards.Expenses Paid by Summit Investments on Behalf of Red Rock Gathering. Prior to the Red Rock Drop Down, Summit Investments incurredcertain support expenses and capital expenditures on behalf of Red Rock Gathering during the year ended December 31, 2014. These transactionswere settled periodically through membership interests prior to the Red Rock Drop Down.Electricity Management Services Agreement. We entered into a consulting arrangement with EquiPower Resources Corp. ("EquiPower"),whereby they assist DFW Midstream with managing its electricity price risk. EquiPower is an affiliate of Energy Capital Partners and Curtis A.Morgan, a member of the board of directors of our general partner, is EquiPower's President and Chief Executive Officer. Amounts paid for suchservices were $0.2 million for the year ended December 31, 2014. The consulting arrangement terminated on December 31, 2014.Engineering Services Agreement. We entered into an engineering services arrangement with IPS Engineering/EPC. IPS Engineering/EPC is anaffiliate of Energy Capital Partners. We paid $0.6 million for such services during the year ended December 31, 2014.Review, Approval and Ratification of Related-Person TransactionsThe board of directors of our general partner has a policy for the identification, review and approval of certain related person transactions. Thepolicy provides for the review and (as appropriate) approval by the Conflicts Committee of SMLP's general partner of transactions between SMLPand its subsidiaries, on the one hand, and related persons (as that term is defined in SEC rules), on the other hand. Pursuant to the policy, theGeneral Counsel of SMLP's general partner is charged with primary responsibility for determining whether, based on the facts and circumstances,a proposed transaction is a related person transaction.For purposes of the policy, a "related person" is any director or executive officer of SMLP's general partner, any nominee for director, anyunitholder known to SMLP to be the beneficial owner of more than 5% of any class of the SMLP's common units, and any immediate familymember, affiliate or controlled subsidiary of any such person. A "related person transaction" is generally a transaction in which SMLP is, orSMLP's general partner or any of SMLP's subsidiaries is, a participant, where the amount involved exceeds $120,000, and a related person has adirect or indirect material interest. Transactions resolved under the conflicts provision of the partnership agreement are not required to be reviewedor approved under the policy.If, after weighing all of the facts and circumstances, the general counsel of SMLP's general partner determines that a proposed transaction is arelated person transaction that requires review or approval and the transaction meets certain monetary thresholds or involves certain relatedpersons, management must present the proposed transaction to the Conflicts Committee for advance approval. If the transaction does not meetthe designated monetary threshold or involve certain related persons, management presents the transaction(s) to the Committee for their review ona quarterly basis.The policy described above was adopted by the board of directors of our general partner on March 7, 2013, and as a result the transactionsdescribed in "Agreements with Affiliates" above were not reviewed under such policy other than the transaction described under the subheading"Engineering Services Agreement."Director IndependenceAlthough most companies listed on the New York Stock Exchange are required to have a majority of independent directors serving on the board ofdirectors of the listed company, the New York Stock Exchange does not require a listed limited partnership like us to have, and we do not intend tohave, a majority of independent directors on the board of directors of our general partner.Item 14. Principal Accounting Fees and Services.Audit Fees. Our audit committee has ratified Deloitte & Touche LLP, Independent Registered Public Accounting Firm, to audit the books, recordsand accounts of SMLP for the year ended December 31, 2014. The fees billed by141Table of ContentsDeloitte & Touche LLP for the audit of consolidated financial statements and other services rendered for the years ended December 31, 2014 and2013 follow. Year ended December 31, 2014 2013Audit fees (1)$2,131,464 $1,230,423Audit-related fees (2)322,572 62,500Tax fees (3)447,614 401,894All other fees— —Total$2,901,650 $1,694,817__________(1) Audit fees are fees billed by Deloitte & Touche LLP for professional services for the audit and quarterly reviews of the Partnership’s consolidated financialstatements, review of other SEC filings, including registration statements, and issuance of comfort letters and consents.(2) Audit-related fees are fees billed by Deloitte & Touche LLP for assurance and related services related to consultations and audits performed in connectionwith acquisitions and assistance with the implementation of Section 404 of the Sarbanes-Oxley Act.(3) Tax fees are billed by Deloitte Tax LLP for tax compliance services, including the preparation of state, federal and Schedule K-1 tax filings and other taxplanning and advisory services.Pre-approval Policy. Pursuant to its charter, the Audit Committee is responsible for the appointment, compensation, retention and oversight ofSMLP's independent auditor (including resolution of disagreements between management and the independent auditor regarding financialreporting). The Audit Committee shall have sole authority to pre-approve all audit, audit-related and permitted non-audit engagements with theindependent auditor, including the fees and other terms of such engagements. The independent auditor shall report directly to the Audit Committee.The Audit Committee may consult with management but may not delegate these responsibilities to management.142Table of ContentsPART IVItem 15. Exhibits, Financial Statement Schedules.(a)(1) Financial StatementsIncluded in Part II, Item 8, of this report:Summit Midstream Partners, LP and Subsidiaries:Report of Independent Registered Public Accounting Firm73Consolidated Balance Sheets as of December 31, 2014 and 201374Consolidated Statements of Operations for the years ended December 31, 2014, 2013, and 201275Consolidated Statements of Partners' Capital and Membership Interests for the years ended December 31, 2014, 2013, and 201276Consolidated Statements of Cash Flows for the years ended December 31, 2014, 2013, and 201279Notes to Consolidated Financial Statements81(2) Financial Statement SchedulesAll schedules are omitted because the required information is inapplicable or the information is presented in the financial statements or the notesthereto.(3) Exhibit IndexAn “Exhibit Index” has been filed as part of this Report included below and is incorporated herein by this reference.Schedules other than those listed above are omitted because they are not required, are not material, are not applicable, or the required informationis shown in the financial statements or notes thereto.In reviewing the agreements included as exhibits to this annual report, please remember they are included to provide information regarding theirterms and are not intended to provide any other factual or disclosure information about us or the other parties to the agreements. The agreementscontain representations and warranties by each of the parties to the applicable agreement. These representations and warranties have been madesolely for the benefit of the other parties to the applicable agreement and:•should not in all instances be treated as categorical statements of fact, but rather as a way of allocating the risk to one of the parties ifthose statements prove to be inaccurate;•have been qualified by disclosures that were made to the other party in connection with the negotiation of the applicable agreement, whichdisclosures are not necessarily reflected in the agreement;•may apply standards of materiality in a way that is different from what may be viewed as material by others; and•were made only as of the date of the applicable agreement or such other date or dates as may be specified in the agreement and aresubject to more recent developments.Accordingly, these representations and warranties may not describe the actual state of affairs as of the date they were made or at any other time.(b) Exhibit IndexExhibit number Description3.1 First Amended and Restated Agreement of Limited Partnership of Summit Midstream Partners, LP, dated as of October3, 2012 (Incorporated herein by reference to Exhibit 3.1 to SMLP's Current Report on Form 8-K dated October 4, 2012(Commission File No. 001-35666))3.2 Amended and Restated Limited Liability Company Agreement of Summit Midstream GP, LLC, dated as of October 3,2012 (Incorporated herein by reference to Exhibit 3.2 to SMLP's Current Report on Form 8-K dated October 4, 2012(Commission File No. 001-35666))3.3 Certificate of Limited Partnership of Summit Midstream Partners, LP (Incorporated herein by reference to Exhibit 3.1 toSMLP's Form S-1 Registration Statement dated August 21, 2012 (Commission File No. 333-183466))143Table of Contents3.4 Certificate of Formation of Summit Midstream GP, LLC (Incorporated herein by reference to Exhibit 3.4 to SMLP's FormS-1 Registration Statement dated August 21, 2012 (Commission File No. 333-183466))4.1 Investor Rights Agreement, dated as of October 3, 2012, by and among EFS-S, LLC, Summit Midstream GP, LLC andSummit Midstream Partners, LLC (Incorporated herein by reference to Exhibit 4.1 to SMLP's Current Report on Form 8-Kdated October 4, 2012 (Commission File No. 001-35666))10.1 Unit Purchase Agreement, dated as of June 4, 2013, by and between, Summit Midstream Partners, LP and SummitMidstream Partners Holdings, LLC (Incorporated herein by reference to Exhibit 10.3 to SMLP's Current Report on Form8-K dated June 5, 2013 (Commission File No. 001-35666))10.2 Purchase Agreement, dated as of June 12, 2013, by and among Summit Midstream Holdings, LLC, Summit MidstreamFinance Corp., Summit Midstream GP, LLC, the Guarantors named therein and the Initial Purchasers named therein(Incorporated herein by reference to Exhibit 1.1 to SMLP's Current Report on Form 8-K dated June 17, 2013(Commission File No. 001-35666))10.3 Indenture, dated as of June 17, 2013, by and among Summit Midstream Holdings, LLC, Summit Midstream FinanceCorp., the Guarantors party thereto and U.S. Bank National Association (including form of the 7½% senior notes due2021) (Incorporated herein by reference to Exhibit 4.1 to SMLP's Current Report on Form 8-K dated June 17, 2013(Commission File No. 001-35666))10.4 Registration Rights Agreement, dated as of June 17, 2013, by and among Summit Midstream Holdings, LLC, SummitMidstream Finance Corp., the Guarantors named therein and the Initial Purchasers named therein (Incorporated hereinby reference to Exhibit 4.2 to SMLP's Current Report on Form 8-K dated June 17, 2013 (Commission File No. 001-35666))10.5 Joinder Agreement, dated as of June 4, 2013, by and among Summit Midstream Holdings, LLC, The Royal Bank ofScotland plc, as Administrative Agent, and the lenders party thereto (Incorporated herein by reference to Exhibit 10.2 toSMLP's Current Report on Form 8-K dated June 5, 2013 (Commission File No. 001-35666))10.6 Second Amended and Restated Credit Agreement dated as of November 1, 2013 (Incorporated herein by reference toExhibit 10.6 to SMLP's 2013 Annual Report on Form 10-K dated March 10, 2014 (Commission File No. 001-35666))10.7 Amended and Restated Guarantee and Collateral Agreement dated as of November 1, 2013 (Incorporated herein byreference to Exhibit 10.7 to SMLP's 2013 Annual Report on Form 10-K dated March 10, 2014 (Commission File No. 001-35666))10.8 Base Indenture, dated as of July 15, 2014, by and among Summit Midstream Holdings, LLC, Summit MidstreamFinance Corp. and U.S. Bank National Association (Incorporated herein by reference to Exhibit 4.1 to SMLP's CurrentReport on Form 8-K dated July 15, 2014 (Commission File No. 001-35666))10.9 First Supplemental Indenture, dated as of July 15, 2014, by and among Summit Midstream Holdings, LLC, SummitMidstream Finance Corp., the Guarantors party thereto and U.S. Bank National Association (including form of the 5½%senior notes due 2022) (Incorporated herein by reference to Exhibit 4.2 to SMLP's Current Report on Form 8-K datedJuly 15, 2014 (Commission File No. 001-35666))10.10 Contribution, Conveyance and Assumption Agreement, dated as of October 3, 2012, by and among Summit MidstreamGP, LLC, Summit Midstream Partners, LP, Summit Midstream Holdings, LLC and Summit Midstream Partners, LLC(Incorporated herein by reference to Exhibit 10.1 to SMLP's Current Report on Form 8-K dated October 4, 2012(Commission File No. 001-35666))10.11†Amended and Restated Natural Gas Gathering Agreement, dated August 1, 2010, by and between DFW MidstreamServices LLC, Chesapeake Energy Marketing, Inc., and Chesapeake Exploration, LLC (Incorporated herein by referenceto Exhibit 10.6 to SMLP's Amendment No. 1 to its Form S-1 Registration Statement dated September 14, 2012(Commission File No. 333-183466))10.12†Amended and Restated Natural Gas Gathering Agreement, dated December 1, 2011, by and between DFW MidstreamServices LLC and Carrizo Oil & Gas, Inc. (Incorporated herein by reference to Exhibit 10.7 to SMLP's Amendment No. 1to its Form S-1 Registration Statement dated September 14, 2012 (Commission File No. 333-183466))144Table of Contents10.13†Second Amended and Restated Gas Gathering Agreement, dated November 1, 2010, by and between WillamsProduction RMT Company LLC and Encana Oil & Gas (USA) Inc. (Incorporated herein by reference to Exhibit 10.8 toSMLP's Amendment No. 1 to its Form S-1 Registration Statement dated September 14, 2012 (Commission File No. 333-183466))10.14†Future Development Gas Gathering Agreement, dated October 1, 2011, by and between Encana Oil & Gas (USA) Inc.,Grand River Gathering, LLC, and Summit Midstream Partners, LLC (Incorporated herein by reference to Exhibit 10.9 toSMLP's Amendment No. 1 to its Form S-1 Registration Statement dated September 14, 2012 (Commission File No. 333-183466))10.15†Mamm Creek Gas Gathering Agreement, dated October 1, 2011, by and between Encana Oil & Gas (USA) Inc., GrandRiver Gathering, LLC, and Summit Midstream Partners, LLC (Incorporated herein by reference to Exhibit 10.10 toSMLP's Amendment No. 1 to its Form S-1 Registration Statement dated September 14, 2012 (Commission File No. 333-183466))10.16†Gas Purchase Agreement dated as of December 20, 2010 by and between Bear Tracker Energy, LLC., and EOGResources, Inc. (Incorporated herein by reference to Exhibit 10.1 to SMLP's Amendment No. 1 to its Quarterly Report onForm 10-Q for the quarterly period ended June 30, 2013 dated October 4, 2013 (Commission File No. 333-183466))10.17†Amended and Restated Gas Gathering and Compression Agreement dated as of November 4, 2013 by and betweenMountaineer Midstream Company, LLC and Antero Resources Corporation (Incorporated herein by reference to Exhibit10.16 to SMLP's 2013 Annual Report on Form 10-K dated March 10, 2014 (Commission File No. 001-35666))10.18 Contribution, Conveyance and Assumption Agreement, dated as of June 4, 2013, by and among Summit MidstreamPartners Holdings, LLC, Bison Midstream, LLC and Summit Midstream Partners, LP (Incorporated herein by reference toExhibit 10.1 to SMLP's Current Report on Form 8-K dated June 5, 2013 (Commission File No. 001-35666))10.19†Purchase and Sale Agreement dated as of June 4, 2013 by and between MarkWest Liberty Midstream & Resources,L.L.C. and Summit Midstream Partners, LP (Incorporated herein by reference to Exhibit 10.3 to SMLP's Amendment No.1 to its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2013 dated October 4, 2013 (CommissionFile No. 333-183466))10.20 Purchase and Sale Agreement among Summit Midstream Partners Holdings, LLC, Red Rock Gathering Company, LLCand Summit Midstream Partners, LP dated as of March 8, 2014 (Incorporated herein by reference to Exhibit 10.1 toSMLP's Current Report on Form 8-K dated March 8, 2014 (Commission File No. 001-35666))10.21*Amended and Restated Employment Agreement, dated August 13, 2012, by and between Summit Midstream Partners,LLC and Steven J. Newby (Incorporated herein by reference to Exhibit 10.11 to SMLP's Form S-1 RegistrationStatement dated August 21, 2012 (Commission File No. 333-183466))10.22*Employment Agreement, dated September 13, 2013, by and between Summit Midstream Partners, LLC and Matthew S.Harrison (Incorporated herein by reference to Exhibit 10.1 to SMLP's Current Report on Form 8-K dated September 18,2013 (Commission File No. 333-183466))10.23*Employment Agreement, dated January 18, 2014, by and between Summit Midstream Partners, LLC and Brock M.Degeyter (Incorporated herein by reference to Exhibit 10.1 to SMLP's Current Report on Form 8-K dated January 23,2014 (Commission File No. 333-183466))10.24*Amended and Restated Employment Agreement, dated March 8, 2012, by and between Summit Midstream Partners,LLC and Brad N. Graves (Incorporated herein by reference to Exhibit 10.12 to SMLP's 2012 Annual Report on Form 10-Kdated March 18, 2013 (Commission File No. 333-183466))10.25*Employment Agreement, dated September 19, 2012, by and between Summit Midstream Partners, LLC and ReneCasadaban (Incorporated herein by reference to Exhibit 10.15 to SMLP's Amendment No. 2 to its Form S-1 RegistrationStatement dated September 20, 2012 (Commission File No. 333-183466))10.26*Summit Midstream Partners, LP 2012 Long-Term Incentive Plan (Incorporated herein by reference to Exhibit 10.2 toSMLP's Current Report on Form 8-K dated October 4, 2012 (Commission File No. 001-35666))10.27 Form of Phantom Unit Award Agreement (Incorporated herein by reference to Exhibit 10.5 to SMLP's Form S-1Registration Statement dated August 21, 2012 (Commission File No. 333-183466))10.28 Form of Director Unit Award Agreement (Incorporated herein by reference to Exhibit 10.3 to SMLP's Current Report onForm 8-K dated October 4, 2012 (Commission File No. 001-35666))145Table of Contents10.29 Summit Midstream Partners, LLC Deferred Compensation Plan dated as of July 1, 2013 (Incorporated herein byreference to Exhibit 4.3 to SMLP's Form S-8 Registration Statement dated June 28, 2013 (Commission File No. 333-189684))12.1 Ratio of Earnings to Fixed Charges21.1 List of Subsidiaries23.1 Consent of Deloitte & Touche LLP31.1 Rule 13a-14(a)/15d-14(a) Certification, executed by Steven J. Newby, President, Chief Executive Officer and Director31.2 Rule 13a-14(a)/15d-14(a) Certification, executed by Matthew S. Harrison, Senior Vice President and Chief FinancialOfficer32.1 Certifications required by Rule 13a-14(b) or Rule 15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the UnitedStates Code (18 U.S.C. 1350), executed by Steven J. Newby, President, Chief Executive Officer and Director, andMatthew S. Harrison, Senior Vice President and Chief Financial Officer101.INS**XBRL Instance Document (1)101.SCH**XBRL Taxonomy Extension Schema101.CAL**XBRL Taxonomy Extension Calculation Linkbase101.DEF**XBRL Taxonomy Extension Definition Linkbase101.LAB**XBRL Taxonomy Extension Label Linkbase101.PRE**XBRL Taxonomy Extension Presentation Linkbase* Management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Item 15(b) of this report† Certain portions have been omitted pursuant to a confidential treatment request. Omitted information has been filed separately with the SEC.** Pursuant to Rule 406T of Regulation S-T, the Interactive Data Files on Exhibit 101 hereto are deemed not filed or part of a registration statementor prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of theSecurities and Exchange Act of 1934, as amended, and otherwise are not subject to liability under those sections. The financial informationcontained in the XBRL(eXtensible Business Reporting Language)-related documents is unaudited and unreviewed.(1) Includes the following materials contained in this Annual Report on Form 10-K for the year ended December 31, 2014, formatted in XBRL: (i)Consolidated Balance Sheets, (ii) Consolidated Statements of Operations, (iii) Consolidated Statements of Partners' Capital and MembershipInterests, (iv) Consolidated Statements of Cash Flows, and (v) Notes to Consolidated Financial Statements.(c) Financial Statement SchedulesNot applicable.146Table of ContentsSIGNATURESPursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signedon its behalf by the undersigned thereunto duly authorized. Summit Midstream Partners, LP (Registrant) By: Summit Midstream GP, LLC (its general partner) March 2, 2015/s/ Matthew S. Harrison Matthew S. Harrison, Senior Vice President and Chief Financial Officer (PrincipalFinancial and Accounting Officer)Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of theregistrant and in the capacities and on the dates indicated.Signature Title Date/s/ Steven J. Newby Director, President and Chief Executive Officer (PrincipalExecutive Officer) March 2, 2015Steven J. Newby /s/ Matthew S. Harrison Senior Vice President and Chief Financial Officer (PrincipalFinancial and Accounting Officer) March 2, 2015Matthew S. Harrison /s/ Thomas K. Lane Director March 2, 2015Thomas K. Lane /s/ Christopher M. Leininger Director March 2, 2015Christopher M. Leininger /s/ Curtis A. Morgan Director March 2, 2015Curtis A. Morgan /s/ Jerry L. Peters Director March 2, 2015Jerry L. Peters /s/ Scott A. Rogan Director March 2, 2015Scott A. Rogan /s/ Jeffrey R. Spinner Director March 2, 2015Jeffrey R. Spinner /s/ Susan Tomasky Director March 2, 2015Susan Tomasky /s/ Robert M. Wohleber Director March 2, 2015Robert M. Wohleber 147EXHIBIT 12.1SUMMIT MIDSTREAM PARTNERS, LPRATIO OF EARNINGS TO FIXED CHARGESThe following table sets forth our ratio of earnings to fixed charges for the periods indicated on a consolidated historical basis. For purposes ofcomputing the ratio of earnings to fixed charges, "earnings" are defined as income before taxes plus fixed charges less capitalized interest. "Fixedcharges" consist of interest expensed and capitalized, amortization of deferred loan costs and an estimate of interest within rent expense. Year ended December 31, 2014 (1) 2013 2012 2011 2010 (Dollars in thousands)Earnings: (Loss) income before income taxes$(20,533) $54,033 $43,679 $38,646 $8,296Add (deduct): Fixed charges43,890 24,338 15,794 6,579 70Capitalized interest(3,172) (4,705) (2,784) (3,362) —Total earnings$20,185 $73,666 $56,689 $41,863 $8,366Fixed Charges: Interest expense$40,159 $19,173 $12,766 $3,054 $—Capitalized interest3,172 4,705 2,784 3,362 —Estimate of interest within rent expense559 460 244 163 70Total fixed charges$43,890 $24,338 $15,794 $6,579 $70 Ratio of earnings to fixed charges0.46 3.03 3.59 6.36 119.51__________(1) The ratio of earnings to fixed charges was less than 1:1 for the year ended December 31, 2014. In order to achieve a ratio of earnings to fixed charges of1:1, we would have had to generate an additional $23.7 million of earnings for the year ended December 31, 2014.EX12.1-1EXHIBIT 21.1SUMMIT MIDSTREAM PARTNERS, LPLIST OF SUBSIDIARIESName State or other jurisdiction of incorporation or organizationSummit Midstream Holdings, LLC DelawareGrand River Gathering, LLC DelawareDFW Midstream Services LLC DelawareBison Midstream, LLC DelawareSummit Midstream Finance Corp. DelawareRed Rock Gathering Company, LLC DelawareEX 21.1-1EXHIBIT 23.1CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRMWe consent to the incorporation by reference in Registration Statement Nos. 333-197311 and 333-191493 on Form S-3 and Nos. 333-184214 and333-189684 on Form S-8 of our report dated March 2, 2015, relating to the consolidated financial statements of Summit Midstream Partners, LPand subsidiaries (the “Partnership”); (which report expresses an unqualified opinion and includes explanatory paragraphs regarding thePartnership’s change in presentation of its reportable segments, the acquisitions of Red Rock Gathering Company, LLC and Bison Midstream, LLCwhich were accounted for as a combination of entities under common control, and the acquisition of the Mountaineer Midstream gathering systemon June 21, 2013), and the effectiveness of the Partnership’s internal control over financial reporting, appearing in this Annual Report on Form 10-Kof the Partnership for the year ended December 31, 2014./s/ Deloitte & Touche LLPDallas, TexasMarch 2, 2015EX 23.1-1EXHIBIT 31.1CERTIFICATIONSI, Steven J. Newby, certify that:1. I have reviewed this annual report on Form 10-K of Summit Midstream Partners, LP;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary tomake the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the periodcovered by this report;3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respectsthe financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as definedin Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-15(f)) for the registrant and have:(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under oursupervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which this report is being prepared;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements forexternal purposes in accordance with generally accepted accounting principles;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's mostrecent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely tomaterially affect, the registrant's internal control over financial reporting; and5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting,to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which arereasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internalcontrol over financial reporting.Date:March 2, 2015 /s/ Steven J. Newby Steven J. Newby President, Chief Executive Officer and Director ofSummit Midstream GP, LLC (the general partner ofSummit Midstream Partners, LP)Ex 31.1-1EXHIBIT 31.2CERTIFICATIONSI, Matthew S. Harrison, certify that:1. I have reviewed this annual report on Form 10-K of Summit Midstream Partners, LP;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary tomake the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the periodcovered by this report;3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respectsthe financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as definedin Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-15(f)) for the registrant and have:(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under oursupervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which this report is being prepared;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements forexternal purposes in accordance with generally accepted accounting principles;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's mostrecent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely tomaterially affect, the registrant's internal control over financial reporting; and5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting,to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which arereasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internalcontrol over financial reporting.Date:March 2, 2015 /s/ Matthew S. Harrison Matthew S. Harrison Senior Vice President and Chief Financial Officer ofSummit Midstream GP, LLC (the general partner ofSummit Midstream Partners, LP)Ex 31.2-1EXHIBIT 32.1CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002In connection with the annual report on Form 10-K of Summit Midstream Partners, LP (the “Registrant”) for the annual period ended December 31,2014, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Steven J. Newby, as President,Chief Executive Officer and Director of Summit Midstream GP, LLC, the general partner of the Registrant, and Matthew S. Harrison, as SeniorVice President and Chief Financial Officer of Summit Midstream GP, LLC, the general partner of the Registrant, each hereby certify, pursuant to18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results ofoperations of the Registrant. /s/ Steven J. NewbyName: Steven J. NewbyTitle: President, Chief Executive Officer and Director of Summit Midstream GP, LLC (the generalpartner of Summit Midstream Partners, LP)Date: March 2, 2015 /s/ Matthew S. HarrisonName: Matthew S. HarrisonTitle: Senior Vice President and Chief Financial Officer of Summit Midstream GP, LLC (the generalpartner of Summit Midstream Partners, LP)Date: March 2, 2015Ex 32.1-1

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