UNITED STATESSECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM 8-K

CURRENT REPORTPursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (date of earliest event reported): July 18, 2019

THIRD COAST MIDSTREAM, LLC(Exact name of registrant as specified in its charter)

Delaware 001-35257 27-0855785

(State or other jurisdictionof incorporation)

(CommissionFile No.)

(IRS EmployerIdentification No.)

2103 CityWest Blvd., Bldg. 4, Suite 800

Houston, Texas 77042(Address of principal executive offices) (Zip Code)

(346) 241-3400(Registrant’s telephone number, including area code)

American Midstream Partners, LP(Former name or former address, if changed since last report)

ChecktheappropriateboxbelowiftheForm8-KfilingisintendedtosimultaneouslysatisfythefilingobligationoftheRegistrantunderanyofthefollowingprovisions:

☐ WrittencommunicationspursuanttoRule425undertheSecuritiesAct(17CFR230.425)

☐ SolicitingmaterialpursuanttoRule14a-12undertheExchangeAct(17CFR240.14a-12)

☐ Pre-commencementcommunicationspursuanttoRule14d-2(b)undertheExchangeAct(17CFR240.14d-2(b))

☐ Pre-commencementcommunicationspursuanttoRule13e-4(c)undertheExchangeAct(17CFR240.13e-4(c))

SecuritiesregisteredpursuanttoSection12(b)oftheAct:

Title of each class Trading

Symbol(s) Name of each exchange

on which registeredCommon Units Representing Limited

Partnership Interests AMID

New York Stock Exchange

IndicatebycheckmarkwhethertheregistrantisanemerginggrowthcompanyasdefinedinRule405oftheSecuritiesActof1933(§230.405ofthischapter)orRule12b-2oftheSecuritiesExchangeActof1934(§240.12b-2ofthischapter).

Emerginggrowthcompany☐

Ifanemerginggrowthcompany,indicatebycheckmarkiftheregistranthaselectednottousetheextendedtransitionperiodforcomplyingwithanyneworrevisedfinancialaccountingstandardsprovidedpursuanttoSection13(a)oftheExchangeAct.☐

Introductory Note

AsfurtherdescribedunderItem5.03below,effectiveonJuly23,2019(the“ConversionEffectiveTime”),AmericanMidstreamPartners,LP,aDelawarelimitedpartnership(the“Partnership”),convertedintoaDelawarelimitedliabilitycompanynamed“ThirdCoastMidstream,LLC”(the“Conversion”).Referenceshereintothe“Registrant”refertothePartnershippriortotheConversionandtoThirdCoastMidstream,LLCfollowingtheConversion.EffectiveonJuly23,2019,AmericanMidstreamGP,LLC,aDelawarelimitedliabilitycompanyandthegeneralpartneroftheRegistrant(the“GeneralPartner”),changeditsnameto“ThirdCoastMidstreamHoldings,LLC”uponafilingofacertificateofamendmenttothecertificateofformationoftheGeneralPartnerwiththeSecretaryofStateoftheStateofDelaware(the“NameChange”).Referenceshereintothe“GeneralPartner”refertoAmericanMidstreamGP,LLCpriortotheNameChangeandtoThirdCoastMidstreamHoldings,LLCfollowingtheNameChange.

Item 1.01 Entry into a Material Definitive Agreement.

SixthAmendedandRestatedAgreementofLimitedPartnershipoftheRegistrant

OnJuly23,2019,theGeneralPartnerandAnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany(“Parent”),enteredintotheSixthAmendedandRestatedAgreementofLimitedPartnershipoftheRegistrant(the“SixthLPA”),whichamendstheRegistrant’sFifthAmendedandRestatedAgreementofLimitedPartnershipdatedasofApril25,2016inaccordancewiththeMergerAgreement(asdefinedbelow).UnderthetermsoftheSixthLPA,theGeneralPartnerremainedthesolegeneralpartneroftheRegistrantandParentwasthesolelimitedpartneroftheRegistrantuntiltheSixthLPAwasreplacedbytheRegistrantLLCA(asdefinedbelow)inconnectionwiththeConversionandtheGPMerger(asdefinedbelow).

TheforegoingdescriptionoftheSixthLPAdoesnotpurporttobecompleteandissubjectto,andqualifiedinitsentiretyby,thefulltextoftheSixthLPA,whichisattachedheretoasExhibit3.1andincorporatedhereinbyreference.

MergerAgreement

OnJuly23,2019,theGeneralPartnerenteredintoanAgreementandPlanofMerger(the“GPMergerAgreement”)withParent,pursuanttowhichParentmergedwithandintotheGeneralPartneronJuly23,2019(the“GPMerger”),withtheGeneralPartnersurvivingasthesolememberoftheRegistrant.

UnderthetermsoftheGPMergerAgreement,attheeffectivetimeoftheGPMerger,theoutstandingmembershipinterestsofParentwerenotconvertedorexchangedinanymanner,andeachsuchmembershipinterestwascancelledandextinguishedfornoconsideration.TheissuedandoutstandingmembershipinterestsoftheGeneralPartnerwereconvertedintoUnits(asdefinedintheFifthAmendedandRestatedLimitedLiabilityCompanyAgreementoftheGeneralPartner(the“FifthLLCA”)amongtheGeneralPartner,3CMHoldings,LLC(f/k/aHighPointInfrastructurePartners,LLC),aDelawarelimitedliabilitycompany,andAMIDGPHoldings,LLC,aDelawarelimitedliabilitycompany)assetforthintheFifthLLCA.

TheforegoingdescriptionoftheGPMergerAgreementdoesnotpurporttobecompleteandissubjectto,andqualifiedinitsentiretyby,thefulltextoftheGPMergerAgreement,whichisattachedheretoasExhibit2.1andincorporatedhereinbyreference.ItisnotintendedtoprovideanyotherfactualinformationabouttheRegistrant,theGeneralPartner,ortheirrespectivesubsidiariesandaffiliates.

LimitedLiabilityCompanyAgreementofThirdCoastMidstream,LLC

OnJuly23,2019,theGeneralPartner,assolememberoftheRegistrantfollowingtheconsummationoftheGPMerger,approvedtheLimitedLiabilityCompanyAgreementoftheThirdCoastMidstream,LLC(the“RegistrantLLCA”).UnderthetermsoftheRegistrantLLCA,theGeneralPartner,asthesolememberoftheRegistrant,wasappointedastheManagingMember(asdefinedintheRegistrantLLCA)oftheRegistrantwithfulldiscretiontomanageandcontrolthebusinessandaffairsoftheRegistrant.

TheforegoingdescriptionoftheRegistrantLLCAdoesnotpurporttobecompleteandissubjectto,andqualifiedinitsentiretyby,thefulltextoftheRegistrantLLCA,whichisattachedheretoasExhibit3.4andincorporatedhereinbyreference.

Item 2.01 Completion of Acquisition or Disposition of Assets.

OnJuly23,2019,theRegistrantcompleteditspreviouslyannouncedmergerwithanaffiliateofArcLightEnergyPartnersFundV,L.P.pursuanttothatcertainAgreementandPlanofMerger(the“MergerAgreement”)amongtheGeneralPartner,theRegistrant,Parent,MergerSub,andHighPointInfrastructurePartners,LLC,anaffiliateofArcLightEnergyPartners

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FundV,L.P.(“ArcLight”),aDelawarelimitedliabilitycompany,pursuanttowhichMergerSubmergedwithandintotheRegistrant(the“Merger”),withtheRegistrantsurvivingtheMergerasawhollyownedsubsidiaryoftheGeneralPartnerandParent,awhollyownedsubsidiaryofanaffiliateofArcLight.

AttheeffectivetimeoftheMerger(the“MergerEffectiveTime”),pursuanttothetermsandconditionssetforthintheMergerAgreement,eachcommonunitoftheRegistrant(each,a“CommonUnit”)issuedandoutstandingimmediatelypriortotheMergerEffectiveTime,heldbypartiesotherthanParentoraffiliatesorcertainotherholders,wasconvertedintotherighttoreceive$5.25incash,withoutinterest.

TheforegoingdescriptionoftheMergerAgreementandtheMergerdoesnotpurporttobecompleteandissubjectto,andqualifiedinitsentiretyby,thefulltextoftheMergerAgreement,whichwasfiledasExhibit2.1totheRegistrant’sCurrentReportonForm8-KfiledonMarch18,2019,andisincorporatedhereinbyreference.

Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

Totheextentapplicable,theinformationincludedunderItem1.01andItem2.01aboveisincorporatedintothisItem3.01byreference.

OnJune23,2019,RegistrantrequestedthattheNewYorkStockExchange(the“NYSE”)fileaForm25withtheSecuritiesandExchangeCommission(the“SEC”)todelisttheCommonUnitsfromtheNYSEandtoderegistertheCommonUnitsunderSection12(b)oftheSecuritiesExchangeActof1934,asamended.TheCommonUnitsweresuspendedfromtradingontheNYSEpriortotheopeningoftradingonJuly23,2019.

Item 3.02 Unregistered Sales of Equity Securities.

OnJuly18,2019,thePartnershipenteredintoaRedemptionAgreementwiththeGeneralPartner,pursuanttowhichtheGeneralPartnerexchanged100%ofthenotionalgeneralpartnerunitsofthePartnershipforCommonUnits(the“Redemption”).InconnectionwiththeRedemption,thePartnershipissued980,889CommonUnits(the“RedemptionUnits”)totheGeneralPartnerandthenotionalgeneralpartnerunitswerecancelled.FollowingtheRedemption,theGeneralPartnerretainedanon-economicgeneralpartnerinterestinthePartnership.

TheissuanceoftheRedemptionUnitswascompletedinrelianceupontheexemptionfromtheregistrationrequirementsoftheSecuritiesActof1933,asamended,providedbySection4(a)(2)thereoffortransactionsbyanissuernotinvolvingapublicoffering.

TheforegoingdescriptionoftheRedemptionAgreementandtheRedemptiondoesnotpurporttobecompleteandissubjectto,andqualifiedinitsentiretyby,thefulltextoftheRedemptionAgreement,whichisfiledasExhibit10.1tothisCurrentReportandisincorporatedhereinbyreference.

Item 3.03 Material Modification to Rights of Security Holders.

Totheextentapplicable,theinformationincludedunderItem1.01andItem2.01aboveandtheinformationincludedunderItem5.03belowregardingtheCertificateofConversion,CertificateofFormation,andRegistrantLLCAisincorporatedintothisItem3.03byreference.

PursuanttotheMergerAgreementandsubjecttothetermsandconditionsthereof,attheMergerEffectiveTime,eachoutstandingphantomunitissuedpursuantto(i)RegistrationStatementNo.333-216585,filedonFormS-8(the“85RegistrationStatement”),filedbytheRegistrantwiththeSEConMarch9,2017,registering312,736commonunitsrepresentinglimitedpartnerinterestsoftheRegistrantundertheAmericanMidstreamPartners,LPAmendedandRestated2014LongTermIncentivePlan(the“LTIP”),(ii)RegistrationStatementNo.333-209614,filedonFormS-8(the“14RegistrationStatement”),filedbytheRegistrantwiththeSEConFebruary19,2016,registering6,000,000commonunitsrepresentinglimitedpartnerinterestsoftheRegistrantundertheThirdAmendedandRestatedAmericanMidstreamGP,LLCLong-TermIncentivePlan(the“2014Plan”,andtogetherwiththeLTIP,the“Plans”),(iii)RegistrationStatementNo.333-183290,filedonFormS-8(the“90RegistrationStatement”),filedbytheRegistrantwiththeSEConAugust13,2012,registering871,750commonunitsrepresentinglimitedpartnerinterestsoftheRegistrantunderthe2014Plan,and(iv)RegistrationStatementNo.333-176438,filedonFormS-8(the“38RegistrationStatement”,andtogetherwiththe85RegistrationStatement,14RegistrationStatement,and90RegistrationStatement,the“RegistrationStatements”),filedbytheRegistrantwiththeSEConAugust23,2011,registering303,602commonunitsrepresentinglimitedpartnerinterestsoftheRegistrantunderthe2014Plan,wasconvertedintoarighttoreceiveacashpaymentinanamountequalto$5.25incash(withoutinterestandsubjecttotaxwithholding,ifapplicable)tovestandbepayableinaccordancewiththetermsoftheunderlyingawardagreementorletter(orthePlans,ifthereisnoseparateawardagreementorletter),andsuchamounttobe

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adjustedfromandaftertheMergerEffectiveTimeinaccordancewiththetermsofthePlans.AttheMergerEffectiveTime,thePlanswereterminatedandfromandaftertheMergerEffectiveTimethereisnoobligationunderthePlanstograntorissue(andnooutstandingawardsprovidingforthegrantorissuanceof)anyrightwithrespecttotheCommonUnitsorotherPartnershipInterests(asdefinedintheMergerAgreement).

Item 5.01 Change in Control of Registrant.

Totheextentapplicable,theinformationincludedunderItem1.01andItem2.01aboveandunderItem5.03belowareincorporatedintothisItem5.01byreference.

Item 5.02 Departure of Directors or Certain Officers: Election of Directors; Appointment of Certain Officers; Compensatory Arrangements

of Certain Officers.

ResignationofDirectorsoftheGeneralPartner

InconnectionwiththeMergerandtheConversion,attheMergerEffectiveTime,StephenW.Bergstrom,GeraldA.Tywoniuk,JohnF.Erhard,PeterA.Fasullo,DonaldR.Kendall,Jr.,DanielR.Revers,JosephW.SuttonandLuciusH.Taylor(collectively,the“ResigningDirectors”)resignedasdirectorsoftheGeneralPartner.ThedecisionofeachoftheResigningDirectorstoresignasadirectoroftheGeneralPartnerwasnottheresultofanydisagreementwiththeGeneralPartnerorthePartnershiponanymatterrelatingtotheoperations,internalcontrols,policiesorpracticesoftheGeneralPartnerorthePartnership,andwassolelyasaresultoftheMergerandtherelatedtransactionsdescribedinthisCurrentReportonForm8-K.

ResignationofOfficersoftheGeneralPartner

InconnectionwiththeMerger,attheMergerEffectiveTime,LouisDorey,EricT.Kalamaras,ReneL.Casadaban,ChristopherB.DialandKarenS.Acree(collectively,the“ResigningOfficers”)resignedtheirpositions(butnotemployment)asInterimPresidentandChiefExecutiveOfficeroftheGeneralPartner,SeniorVicePresidentandChiefFinancialOfficeroftheGeneralPartner,SeniorVicePresidentandChiefOperatingOfficeroftheGeneralPartner,SeniorVicePresident,GeneralCounselandChiefComplianceOfficeroftheGeneralPartnerandVicePresidentandChiefAccountingOfficeroftheGeneralPartner,respectively.ThedecisionofeachoftheResigningOfficerstoresignasofficersoftheGeneralPartnerwasnottheresultofanydisagreementsbetweenanyResigningOfficerandthePartnershiportheGeneralPartneroranyofficerordirectorofthePartnershiportheGeneralPartnerandwassolelyasaresultoftheMergerandtherelatedtransactionsdescribedinthisCurrentReportonForm8-K.

AppointmentofOfficersofThirdCoastMidstream,LLC

AsaresultoftheConversionandGPMerger,thebusinessandaffairsofthePartnershipwillbeoverseenbytheGeneralPartnerassolememberoftheRegistrant.FollowingtheGPMergerEffectiveTime,theGeneralPartnerappointedMatthewW.RowlandasPresidentandChiefExecutiveOfficeroftheRegistrant,ReneL.CasadabanasSeniorVicePresidentandChiefOperatingOfficeroftheRegistrant,RyanK.RupeasSeniorVicePresidentandChiefCommercialOfficeroftheRegistrant,KarenS.AcreeasVicePresidentandChiefAccountingOfficeroftheRegistrant,andStephenCiupakasVicePresident–FinanceoftheRegistrant(collectively,the“RegistrantOfficers”).

Mr.Rowland,50,previouslyservedasSeniorVicePresidentatCIMAENERGY,LPawhollyownedsubsidiaryofMitshubishiCorporationfrom2017to2019,wherehewasresponsibleformanagingfeedgasforMitsubishi’spositionintheCameronLNGfacility.Mr.RowlandalsopreviouslyservedasthechiefoperatingofficeroftheGeneralPartnerfrom2013to2016.PriortohisappointmentwiththeGeneralPartner,Mr.RowlandwasafounderandManagingDirectoratHighPointEnergy,LLC(“HPE”)from2009to2013.PriortoHPE,Mr.RowlandservedasVicePresident,AssetOptimizationforCIMAENERGY,LTD.from2003through2009.Mr.RowlandbeganhiscareerwithTenneco/ElPaso,whereheheldvariousoperationalandcommercialrolesfrom1986to2003.Mr.RowlandreceivedaB.S.inMechanicalEngineeringfromTexasA&MUniversityin1985.

Mr.Casadaban,49,has27yearsofmidstreamprojectmanagementandbusinessdevelopmentexperienceforonshore,offshoreanddeepwaterpipelinesystems.Mr.CasadabanhasservedastheSeniorVicePresidentandChiefOperatingOfficeroftheGeneralPartnersince2017.From2014to2017,Mr.CasadabanservedastheChiefOperatingOfficerforSummitMidstreamPartners,LP(“Summit”).PriortojoiningSummit,Mr.CasadabanworkedforEnterpriseProductsastheDirectorforDeepwaterBusinessDevelopmentoffloatingproductionplatformsandoffshorepipelines.Mr.CasadabanhasalsoservedasanindependentconsultanttoExxonMobilCorporationandGulfTerraEnergyPartners,LPforGulfofMexicoandinternationalpipelineprojects.Priortosuchroles,Mr.CasabadanwasemployedatLandandMarineEngineeringLimited,andwasresponsibleformanagingdomesticandinternationalpipelinerivercrossingsandbeachapproachesbyhorizontaldirectionaldrilling.Mr.CasadabanbeganhiscareerasaFieldEngineerforMcDermottInternationalInc.HecurrentlyservesontheboardofdirectorsofAngelReachandholdsaBachelorofScienceinBuildingConstructionfromAuburnUniversity.

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Mr.Rupe,43,hasservedasVicePresident—NaturalGasServicesandOffshorePipelinesofthePartnershipsinceMarch2017andhasservedinothercapacitieswiththePartnershipsince2012.Previously,Mr.RupeservedasVicePresidentofNaturalGasServicesandOffshorePipelinesandasthePartnership’sVicePresidentofCommercialOperationsofthePartnership.PriortohisappointmentasanofficerofthePartnership,hewasapartnerandservedasDirectorofCommercialOperationsforHighPointEnergy,LLC(“HighPointEnergy”).Mr.RupejoinedHighPointEnergyfromCIMAEnergy,wherehewasanownerandservedasDirectorofGulfCoastTradingandGasScheduling.Mr.RupeisagraduateofTexasA&MUniversity.

Ms.Acree,62,hasoverthirty-sixyearsofexperienceinfinancialandmanagementaccounting.Ms.AcreehasservedinthiscapacityfortheGeneralPartnersinceApril2018.Ms.AcreepreviouslyservedastheChiefAccountingOfficerforJonesEnergy,Inc.inAustin,Texas,from2015to2018.PriortoJonesEnergy,Inc.,sheservedasVicePresident,ControllerandChiefAccountingOfficerforW&TOffshore,Inc.from2007to2015.Ms.AcreeholdsaB.B.A.inAccountingfromTexasTechUniversityandisaCertifiedPublicAccountantlicensedinTexas.

Mr.Ciupak,40,hasoverfifteenyearsoffinancialanalysisandcorporatefinanceexperienceincludingtwelveyearsofmidstreamcorporatefinanceexperience.Mr.CiupakhasservedasthePartnership’sSeniorDirectorCorporateFinancesince2016.PriortojoiningthePartnership,Mr.CiupakwastheDirectorofFinancialPlanningandAnalysisatAzureMidstreamEnergy,LLC(“Azure”)fromJuly2014throughNovember2016,andfrom2006through2014,heservedinvariouscapacitiesatAtlasPipelinePartners,LP.Mr.CiupakholdsaB.A.inAccountancyfromtheUniversityofOklahomaandaMasterofEnergyBusinessfromtheUniversityofTulsa.

TherearenoarrangementsorunderstandingsbetweenanyoftheRegistrantOfficersandanyotherpersonpursuanttowhichsuchofficerwasappointed.TherearenofamilyrelationshipsbetweenanyRegistrantOfficerandanydirectororexecutiveofficeroftheRegistrant,andnoneoftheRegistrantOfficershasanydirectorindirectmaterialinterestinany“relatedparty”transactionrequiredtobedisclosedpursuanttoItem404(a)ofRegulationS-K.

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

OnJuly23,2019,theRegistrantfiledaCertificateofMerger(the“PartnershipMergerCertificate”)withtheSecretaryofStateoftheStateofDelaware(the“DESecretaryofState”)toeffecttheMerger.Thereafter,toimplementtheConversion,theRegistrantfiledwiththeDESecretaryofStateaCertificateofConversionand,initscapacityasthesoleandmanagingmemberoftheRegistrant,theGeneralPartnerfiledwiththeDESecretaryofStateaCertificateofFormation.

AttheConversionEffectiveTime,theRegistrantconvertedfromaDelawarelimitedpartnershiptoaDelawarelimitedliabilitycompanypursuanttoaplanofconversion(the“PlanofConversion”)andtheCertificateofFormationandtheRegistrantLLCAbecameeffective.

Immediatelythereafter,theGeneralPartnerfiledaCertificateofMerger(the“GPMergerCertificate”)withtheDESecretaryofStatetoeffecttheGPMerger.

TheforegoingdescriptionofthePartnershipMergerCertificate,theCertificateofFormation,theGPMergerCertificateandtheCertificateofConversiondoesnotpurporttobecompleteandisqualifiedinitsentiretybyreferencetothecompletetextofsuchagreements,copiesofwhicharefiledasExhibits3.2,3.3,3.5and3.6respectively,tothisCurrentReportandareincorporatedbyreferenceherein.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.Exhibit No. Description of Exhibit

2.1

AgreementandPlanofMerger,datedJuly23,2019,byandbetweenAnchorMidstreamAcquisition,LLCandThirdCoastMidstreamHoldings,LLC.

2.2*

AgreementandPlanofMerger,datedMarch17,2019byandamongAmericanMidstreamPartners,LP,AmericanMidstreamGP,LLC,AnchorMidstreamAcquisition,LLC,AnchorMidstreamMergerSub,LLC,andHighPointInfrastructurePartners,LLC(incorporatedbyreferencetoExhibit2.1totheCurrentReportonForm8-K(CommissionFileNo.001-35257)filedonMarch18,2019).

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3.1 SixthAmendedandRestatedAgreementofLimitedPartnershipofAmericanMidstreamPartners,LP,datedJuly23,2019.

3.2 CertificateofMergerofAmericanMidstreamPartners,LPintoAnchorMidstreamSub,LLCdatedJuly23,2019.

3.3 CertificateofFormationofThirdCoastMidstream,LLCdatedJuly23,2019.

3.4 LimitedLiabilityCompanyAgreementofThirdCoastMidstream,LLCdatedJuly23,2019.

3.5 CertificateofMergerofThirdCoastMidstreamHoldings,LLCintoAnchorMidstreamAcquisition,LLCdatedJuly23,2019.

3.6 CertificateofConversionofThirdCoastMidstream,LLC,datedJuly23,2019.

10.1 RedemptionAgreement,datedJuly18,2019,byandbetweenAmericanMidstreamGP,LLCandAmericanMidstreamPartners,LP.* CertainscheduleshavebeenomittedpursuanttoItem601(b)(2)ofRegulationS-K.Acopyofanyomittedschedulewillbefurnishedsupplementallyto

theSECuponrequest.

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SIGNATURES

PursuanttotherequirementsoftheSecuritiesExchangeActof1934,theregistranthasdulycausedthisreporttobesignedonitsbehalfbytheundersigned,thereuntodulyauthorized.

July23,2019

THIRD COAST MIDSTREAM, LLC

By: /s/ChristopherB.DialName: ChristopherB.DialTitle: SeniorVicePresidentandGeneralCounsel

[SignaturePagetoForm8-K]

Exhibit 2.1

Execution Version

AGREEMENT AND PLAN OF MERGER

ThisAgreementandPlanofMerger,datedasofJuly23,2019(this“Agreement”),isenteredintobyandbetweenAnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany(“Parent”),andThirdCoastMidstreamHoldings,LLC,aDelawarelimitedliabilitycompany(“ThirdCoastHoldings”).

WITNESSETH

WHEREAS,ParentholdsallofthemembershipinterestsofThirdCoastMidstream,LLC,aDelawarelimitedliabilitycompany(“ThirdCoastMidstream”),andisthesolememberofThirdCoastMidstream;

WHEREAS,ThirdCoastHoldingsholdsallofthemembershipinterestsofParentandisthesolememberofParent;

WHEREAS,ThirdCoastHoldings,initscapacityasthemanagingmemberofParent,has(i)determineditadvisableandinthebestinterestsofParentforParenttomergewithandintoThirdCoastHoldings(the“Merger”)pursuanttotheprovisionsofSection18-209oftheDelawareLimitedLiabilityCompanyAct,asamended(the“Act”),whereuponThirdCoastHoldingsshallcontinueasthesurvivingentityand(ii)authorized,adoptedandapprovedthisAgreementandtheMerger;and

WHEREAS,themanagingmemberofThirdCoastHoldingshas(i)determineditadvisableandinthebestinterestsofThirdCoastHoldingstoconsummatetheMergerand(ii)authorized,adoptedandapprovedthisAgreementandtheMerger.

NOW,THEREFORE,inconsiderationofthemutualcovenantsandagreementshereincontained,thepartiesherebyagreeasfollows:

1.TheMerger.InaccordancewithTitle6,Section18-209oftheAct,anduponthetermsandconditionsofthisAgreement,attheEffectiveTime(asdefinedbelow),(i)ParentshallbemergedwithandintoThirdCoastHoldings,(ii)theseparatecompanyexistenceofParentshallceaseand(iii)ThirdCoastHoldingsshallcontinueasthesurvivingentityaftertheMerger(insuchcapacity,the“SurvivingEntity”).AttheEffectiveTime,theeffectoftheMergershallbeasprovidedinthisAgreementandTitle6,Section18-209(f)-(g)oftheAct.

2.EffectiveTime.TheMergershallbecomeeffectiveuponthefilingoftheCertificateofMerger(asdefinedbelow)withtheSecretaryofStateoftheStateofDelaware(the“EffectiveTime”).

3.CertificateofMerger.ParentandThirdCoastHoldingsagreethattheywilleachcausetobeexecuted,deliveredandfiledaCertificateofMergersatisfyingtherequirementssetforthinTitle6,Section18-209(c)oftheAct(the“CertificateofMerger”),withtheSecretaryofStateoftheStateofDelaware,andthattheywillcausetobeperformedallnecessaryactswithintheStateofDelawareandelsewheretoeffecttheMerger.Unlessthecontextotherwiserequires,theterm“Agreement”asusedhereinreferscollectivelytothisAgreementandtheCertificateofMerger.

4.LimitedLiabilityCompanyAgreement.FollowingtheconsummationoftheMerger,theFourthAmendedandRestatedLimitedLiabilityCompanyAgreementofThirdCoastHoldingsshallbeamendedandrestatedinitsentiretyintheformattachedheretoasExhibitA(the“FifthA/RLLCA”).

5.EffectofMergeronMembershipInterests.AttheEffectiveTime,byvirtueoftheMergerandwithoutanyactiononthepartoftheholdersofanymembershipinterestsofParent,theoutstandingmembershipinterestsofParentshallnotbeconvertedorexchangedinanymanner,andeachsuchmembershipinterestasoftheEffectiveTimeshallbecancelledandextinguishedfornoconsideration.TheissuedandoutstandingmembershipinterestsofThirdCoastHoldingsshallbeconvertedintoUnits(asdefinedintheFifthA/RLLCA)oftheSurvivingEntityassetforthintheFifthA/RLLCA.

6.AdditionalActions.SubjecttothetermsofthisAgreement,thepartiesheretoshalltakeallsuchreasonableandlawfulactionasmaybenecessaryorappropriateinordertoeffecttheMergerandtocomplywiththerequirementsoftheAct.If,atanytimeaftertheEffectiveTime,theSurvivingEntityshallconsiderorbeadvisedthatanydeeds,billsofsale,assignments,assurancesoranyotheractionsorthingsarenecessaryordesirabletovest,perfectorconfirm,ofrecordorotherwise,intheSurvivingEntityitsright,titleorinterestin,toorunderanyoftherights,propertiesorassetsofParent,orotherwisetocarryoutthisAgreement,theSurvivingEntityshallbeauthorizedtoexecuteanddeliver,inthenameandonbehalfofParentandThirdCoastHoldings,allsuchdeeds,billsofsale,assignmentsandassurancesandtotakeanddo,inthenameandonbehalfofParentandThirdCoastHoldingsorotherwise,allsuchotheractionsandthingsasmaybenecessaryordesirabletovest,perfectorconfirmanyandallright,titleandinterestin,toandundersuchrights,propertiesorassetsintheSurvivingEntityorotherwisetocarryoutthisAgreement.

7.TaxTreatment.ParentandThirdCoastHoldingsagreethatbecauseeachofParentandThirdCoastHoldingsistreatedunderU.S.TreasuryRegulationsSection301.7701-3asdisregardedasanentityseparatefromthesamedirectorindirectcommonparentthatistreatedasapartnershipforU.S.federalincometaxpurposes,theMergershallbedisregardedforU.S.federalincometaxpurposes.

8.Termination.ThisAgreementmaybeterminated,andtheMergercontemplatedherebymaybeabandoned,atanytimepriortotheEffectiveTime.Intheeventofsuchterminationandabandonment,thisAgreementshallbecomevoidandnoneofParent,ThirdCoastHoldings,ortheirrespectivemanagers,membersorofficers,asthecasemaybe,shallhaveanyliabilitywithrespecttosuchterminationandabandonment.

9.AmendmentandWaiver.AtanytimepriortotheEffectiveTime,thisAgreementmay,totheextentpermittedbytheAct,besupplemented,amendedormodifiedbythemutualconsentofthepartieshereto.AnyextensionorwaiveroftheobligationshereinofeitherpartyshallbevalidonlyifsetforthinaninstrumentinwritingreferringtothisSectionandsignedbythepartytobeboundthereby.Anywaiverofanytermorconditionshallnotbeconstruedasawaiverofanysubsequentbreachorasubsequentwaiverofthesametermorcondition,orawaiverofanyothertermorcondition,ofthisAgreement.Thefailureofanypartytoassertanyofitsrightshereundershallnotconstituteawaiverofanyofsuchrights.

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10.GoverningLaw.ThisAgreementshallbegovernedbyandconstruedandenforcedunderthelawsoftheStateofDelaware,regardlessofthelawsthatmightotherwisegovernunderapplicableprinciplesofconflictsoflaw.

11.SuccessorsandAssigns.ThisAgreementshallbebindinguponandinuretothebenefitofthepartiesheretoandtheirrespectivesuccessorsandpermittedassigns.NeitherpartymayassigneitherthisAgreementoranyofitsrights,interestsorobligationshereunderwithoutthepriorwrittenapprovaloftheotherparty.

12.NoThirdPartyBeneficiaries.ThisAgreementshallnotconferanyrightsorremediesuponanypersonotherthanthepartiesheretoandtheirrespectivesuccessorsandpermittedassigns.

13.Headings.TheSectionheadingscontainedinthisAgreementareinsertedforconvenienceonlyandshallnotaffectinanywaythemeaningorinterpretationofthisAgreement.

14.Severability.AnytermorprovisionofthisAgreementthatisinvalidorunenforceableinanysituationinanyjurisdictionshallnotaffectthevalidityorenforceabilityoftheremainingtermsandprovisionshereoforthevalidityorenforceabilityoftheoffendingtermorprovisioninanyothersituationorinanyotherjurisdiction.

15.EntireAgreement.ThisAgreement,includingtheagreements,documentsandinstrumentsreferredtoherein,constitutestheentireagreementandsupersedesallotherprioragreementsandundertakings,bothwrittenandoral,amongthepartieshereto,oranyofthem,withrespecttothesubjectmatterhereof.

16.Counterparts.ThisAgreementmaybeexecutedinoneormorecounterparts,eachofwhichshallbedeemedanoriginal,andallofwhich,whentakentogether,shallbedeemedoneagreement.DeliveryofanexecutedcounterpartofasignaturepageofthisAgreementbyfacsimileorotherelectronicimagescanshallbeeffectiveasdeliveryofamanuallyexecutedcounterpartofthisAgreement.

[Signaturepagefollows.]

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IN WITNESS WHEREOF ,theundersignedhaveexecutedthisAgreementasofthedatefirstwrittenabove.

ANCHOR MIDSTREAM ACQUISITION, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

THIRD COAST MIDSTREAM HOLDINGS, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoAgreementandPlanofMerger]

Exhibit A

Fifth Amended and Restated Limited Liability Company Agreement

(Seeattached)

ExhibitAtoAgreementandPlanofMerger

Execution Version

FIFTH AMENDED AND RESTATED

LIMITED LIABILITY COMPANY AGREEMENT

OF

THIRD COAST MIDSTREAM HOLDINGS, LLC

Dated as of July 23, 2019

TABLEOFCONTENTS PageARTICLEI.DEFINEDTERMS 3

Section1.1 Definitions 3

ARTICLEII.FORMATIONOFTHECOMPANY 10Section2.1 Formation 10Section2.2 CompanyName 10Section2.3 TermofCompany 10Section2.4 RegisteredAgentandOffice 10Section2.5 PrincipalPlaceofBusiness 10Section2.6 FiscalYearTaxableYear 10

ARTICLEIII.PURPOSEANDPOWERSOFTHECOMPANY 10Section3.1 Purpose 10Section3.2 PowersoftheCompany 11Section3.3 CertainTaxMatters 11

ARTICLEIV.MEMBERS 11Section4.1 PowersofMembers 11Section4.2 VotingandEconomicRightsofMembers 11Section4.3 MeetingsofMembers 12Section4.4 BusinessTransactionsofaMemberwiththeCompany 13Section4.5 NoCessationofMembershipuponBankruptcy 14Section4.6 Confidentiality 14Section4.7 OtherBusinessforMembers 15Section4.8 Financing 15

ARTICLEV.MANAGEMENT 16Section5.1 ManagingMember 16Section5.2 CompensationofManagingMember 16Section5.3 ManagingMemberas“Manager” 16Section5.4 Officers 17

ARTICLEVI.REPRESENTATIONSANDWARRANTIES 17Section6.1 RepresentationsandWarrantiesoftheMembers 17Section6.2 LIMITATIONOFWARRANTIES 19

ARTICLEVII.CAPITAL 19Section7.1 Units 19Section7.2 IssuanceofUnits 19Section7.3 CapitalAccounts 20Section7.4 CapitalAccountAdjustments 20Section7.5 AdditionalCapitalContributions 21Section7.6 NegativeCapitalAccounts 21Section7.7 AssigneeCapitalAccounts 21

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TABLE OF CONTENTS (CONT’D) PageARTICLEVIII.ALLOCATIONS 21

Section8.1 NetProfitandNetLossAllocations 21Section8.2 RestrictionsonAllocations 22Section8.3 IncomeTaxAllocations 23

ARTICLEIX.DISTRIBUTIONS 24Section9.1 DistributionsGenerally 24Section9.2 DistributionsinKind 24Section9.3 NoWithdrawalofCapital 24Section9.4 Withholding 24Section9.5 RestrictedDistributions 25

ARTICLEX.BOOKSANDRECORDS 25Section10.1 Books,RecordsandFinancialStatements 25Section10.2 CertainTaxMatters 25

ARTICLEXI.LIABILITY,EXCULPATIONANDINDEMNIFICATION 27Section11.1 Liability 27Section11.2 Exculpation 27Section11.3 FiduciaryDuty 28Section11.4 Indemnification 28Section11.5 Expenses 28Section11.6 Nonexclusivity;Severability 28

ARTICLEXII.TRANSFERSOFUNITS 29Section12.1 RestrictionsonTransfersofUnits 29Section12.2 PermittedTransfers 29Section12.3 OverridingProvisions 30Section12.4 ReleaseofLiability 30Section12.5 SubstituteMembers 31Section12.6 Resignation 31

ARTICLEXIII.DISSOLUTION,LIQUIDATIONANDTERMINATION 31Section13.1 DissolvingEvents 31Section13.2 Liquidation 32Section13.3 Reserves 32Section13.4 DistributionInKind 33Section13.5 Termination 33Section13.6 ClaimsoftheMembers 33

ARTICLEXIV.MISCELLANEOUS 33Section14.1 Notices 33Section14.2 Headings 34Section14.3 EntireAgreement 34Section14.4 Construction 34Section14.5 Counterparts 35

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TABLE OF CONTENTS (CONT’D) Page

Section14.6 GoverningLaw 35Section14.7 Jurisdiction;ConsenttoServiceofProcess;Waiver 35Section14.8 WaiverofJuryTrial 35Section14.9 WaiverGenerally 35Section14.10 Severability 35Section14.11 Amendments 36Section14.12 FeesandExpenses 36Section14.13 NoEmploymentAgreement 36Section14.14 NoThird-PartyBeneficiaries 36

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THELIMITEDLIABILITYCOMPANYINTERESTSDESCRIBEDINTHISFIFTHAMENDEDANDRESTATEDLIMITEDLIABILITYCOMPANYAGREEMENTHAVENOTBEENREGISTEREDUNDERTHESECURITIESACTOF1933,ASAMENDED,ORUNDERANYSTATESECURITIESACTSINRELIANCEUPONEXEMPTIONSUNDERTHOSEACTS.THESALEOROTHERDISPOSITIONOFSUCHLIMITEDLIABILITYCOMPANYINTERESTSISPROHIBITEDUNLESSSUCHSALEORDISPOSITIONISMADEINCOMPLIANCEWITHALLSUCHAPPLICABLEACTS.ADDITIONALRESTRICTIONSONTRANSFEROFSUCHLIMITEDLIABILITYCOMPANYINTERESTSARESETFORTHINTHISAGREEMENT.

FIFTH AMENDED AND RESTATEDLIMITED LIABILITY COMPANY AGREEMENT

OFTHIRD COAST MIDSTREAM HOLDINGS, LLC

ThisFifthAmendedandRestatedLimitedLiabilityCompanyAgreementofThirdCoastMidstreamHoldings,LLC(f/k/aAmericanMidstreamGP,LLC)(the“Company”)isenteredintobyandamongtheCompany,3CMHoldings,LLC(f/k/aHighPointInfrastructurePartners,LLC),aDelawarelimitedliabilitycompany(the“ManagingMember”),andAMIDGPHoldings,LLC,aDelawarelimitedliabilitycompany(“AMIDHoldings”),effectiveasofJuly23,2019(the“EffectiveDate”).

WITNESSETH

WHEREAS,onAugust20,2009,theCompanywasformeduponthefilingofacertificateofformation(includinganyandallamendmentsandmodificationstheretoandrestatementsthereof,the“Certificate”)withtheSecretaryofStateoftheStateofDelaware;

WHEREAS,onNovember4,2009,AIMMidstreamHoldings,LLC,aDelawarelimitedliabilitycompany(“AIMMidstreamHoldings”),adoptedtheAmendedandRestatedLimitedLiabilityCompanyAgreementoftheCompany(the“FirstAmendedandRestatedAgreement”)tosetforththerights,dutiesandobligationsofAIMMidstreamHoldingsassolememberoftheCompany;

WHEREAS,AIMMidstreamHoldingsandtheManagingMemberenteredintothatcertainPurchaseAgreement,datedasofApril15,2013(the“PurchaseAgreement”),pursuanttowhichtheManagingMemberpurchasedfromAIMMidstreamHoldings(i)100%oftheoutstandingsubordinatedunitsrepresentinglimitedpartnerinterestsofAmericanMidstreamPartners,LP,aDelawarelimitedpartnership,and(ii)90%oftheMembershipInterestsoftheCompany(the“TransferredInterests”),onthetermsandsubjecttotheconditionssetforththerein;

WHEREAS,onApril15,2013,AIMMidstreamHoldingsandtheManagingMemberadoptedtheSecondAmendedandRestatedLimitedLiabilityCompanyAgreementoftheCompany(the“SecondAmendedandRestatedAgreement”)toamendandrestatetheFirstAmendedandRestatedAgreementasofsuchdateto(i)admittheManagingMemberasaMemberoftheCompany,reflectthetransferoftheTransferredInterestsfromAIMMidstreamHoldingstotheManagingMemberandreflecttheconversionoftheTransferredInterestsintotheClassAMembershipInterestsand(ii)reflecttheconversionoftheremaining10%oftheMembershipInterestsheldbyAIMMidstreamHoldings(the“RemainingInterests”)intotheClassBMembershipInterests;

WHEREAS,onMay2,2016,AIMMidstreamHoldingsandtheManagingMemberadoptedtheThirdAmendedandRestatedLimitedLiabilityCompanyAgreementoftheCompany(the“ThirdAmendedandRestatedAgreement”)toamendandrestatetheSecondAmendedandRestatedAgreementasofsuchdateto(i)createanewclassofMembershipInterestintheCompany(the“ClassCMembershipInterests”)and(ii)admitLB3Services,aTexasgeneralpartnership(the“ExecutiveFamilyVehicle”),asaMemberoftheCompanyandtheholderoftheClassCMembershipInterests;

WHEREAS,onDecember1,2016,MagnoliaInfrastructureHoldings,LLC,aDelawarelimitedliabilitycompany(“Magnolia”),acquired100%oftheClassBMembershipInterestsfromAIMMidstreamHoldings,andAIMMidstreamHoldingsceasedtobeaMemberoftheCompany;

WHEREAS,onMarch8,2017,theCompanyissuedtoMagnoliaClassAMembershipInterests(the“AdditionalClassAMembershipInterests”),whichAdditionalClassAMembershipInterestsrepresentedanOwnershipPercentageof18.786%;

WHEREAS,onAugust9,2017,Magnoliacontributed100%oftheClassBMembershipInterestsandtheAdditionalClassAMembershipIntereststoAMIDHoldings,andMagnoliaceasedtobeaMemberoftheCompany;

WHEREAS,onAugust10,2017,AMIDHoldings,theManagingMemberandtheExecutiveFamilyVehicleadoptedtheFourthAmendedandRestatedLimitedLiabilityCompanyAgreementoftheCompany(the“FourthAmendedandRestatedAgreement”)toamendandrestatetheThirdAmendedandRestatedAgreementasofsuchdateto(i)reflectthetransferoftheClassBMembershipInterestsfromAIMMidstreamHoldingstoMagnolia,(ii)reflectthetransferoftheClassAMembershipInterestsandtheClassBMembershipInterestsfromMagnoliatoAMIDHoldingsand(iii)reflecttheconversionoftheClassBMembershipInterestsintoadditionalClassAMembershipInterests;

WHEREAS,onApril24,2019,theCompany,theExecutiveFamilyVehicleandLynnL.BourdonIIIenteredintothatcertainSeparationandReleaseAgreement,pursuanttowhich,amongotherthings,theCompanyrepurchasedtheClassCMembershipInterestsheldbytheExecutiveFamilyVehicle,suchthatnoClassCMembershipInterestsremainoutstandingasoftheEffectiveDate(suchrepurchase,the“ClassCRepurchase”);

WHEREAS,ontheEffectiveDate,AnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany,mergedwithandintotheCompany(the“AnchorAcquisitionMerger”),withtheCompanysurvivingasthesolememberofThirdCoastMidstream,LLC,aDelawarelimitedliabilitycompany(“ThirdCoastMidstream”);

WHEREAS,ontheEffectiveDate,theCompany’snamewaschangedto“ThirdCoastMidstreamHoldings,LLC”uponthefilingofacertificateofamendmenttotheCertificatewiththeSecretaryofStateoftheStateofDelaware(the“NameChange”);

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WHEREAS,inconnectionwiththeClassCRepurchase,theAnchorAcquisitionMergerandtheNameChange,theMembersdesiretoamendandrestatetheFourthAmendedandRestatedAgreementinitsentiretytoprovidefortheconductofthebusinessandaffairsoftheCompanyandcertainrelationsamongtheMembersinaccordancewiththetermsandconditionsofthisAgreement,asitmaybeamendedfromtimetotime;and

WHEREAS,theMembers,byexecutionofthisAgreement,setforththeiragreementsregardingtheorderlymanagementoftheCompanyasalimitedliabilitycompanypursuanttoandinaccordancewiththeDelawareLimitedLiabilityCompanyAct(6Del.C.§18101,etseq.)(asamendedfromtimetotime,the“DelawareAct”).

NOW,THEREFORE,inconsiderationofthepremisesandmutualagreementscontainedherein,andothergoodandvaluableconsideration,thereceiptandsufficiencyofwhichareherebyacknowledged,theMembersherebyagreeasfollows:

ARTICLEI.DEFINEDTERMS

Section1.1Definitions.

“AccountingPeriod”meansthefiscalyearasdescribedinSection2.6.ThelastAccountingPeriodshallendontheterminationoftheCompany.

“AdditionalCapitalContribution”meansanyCapitalContributionmadebyaMembertotheCompanypursuanttoSection7.5.

“AdditionalClassAMembershipInterests”shallhavethemeaningsetforthintherecitalstothisAgreement.

“AdditionalMembershipUnitPrice”means,atthetimeadditionalUnitsareissuedpursuanttoSection7.5(a)inrespectofaMember’sAdditionalCapitalContribution,thepriceatwhichsuchUnitsarevaluedonamark-to-marketbasisbytheManagingMemberingoodfaithimmediatelypriortosuchAdditionalCapitalContribution.

“AdjustedCapitalAccount”meanstheCapitalAccountmaintainedforeachMember(a)increasedbyanyamountstheMemberisobligatedtocontributeorrestoretotheCompanypursuanttothepenultimatesentencesofTreasuryRegulationsSections1.704-2(g)(1)and1.7042(i)(5),and(b)decreasedbyanyamountsdescribedinTreasuryRegulationsSections1.704-1(b)(2)(ii)(d)(4),(5),or(6)withrespecttosuchMember.

“Affiliate”means,withrespecttoaspecifiedPerson,anyPersonthatdirectly,orindirectlythroughoneormoreintermediaries,Controls,isControlledbyorisundercommonControlwiththespecifiedPerson;provided,that,withrespecttotheManagingMember,theterm“Affiliate”alsomeansanyPersonControlledbyaninvestmentfundorpartnership(generalorlimited)managed,directlyorindirectly,byArcLightCapitalPartners,LLC.

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“Agreement”meansthisFifthAmendedandRestatedLimitedLiabilityCompanyAgreementoftheCompany,asthisagreementmayberevised,amended,restatedorsupplementedfromtimetotimeaftertheEffectiveDate.

“AIMMidstreamHoldings”shallhavethemeaningsetforthintherecitalstothisAgreement.

“AMIDHoldings”shallhavethemeaningsetforthinthepreambletothisAgreement.

“AnchorAcquisitionMerger”shallhavethemeaningsetforthintherecitalstothisAgreement.

“BipartisanBudgetAct”meansSections6221through6241oftheCode,asamendedbySection1101oftheBipartisanBudgetActof2015,Pub.L.No.114-74andSection411oftheProtectingAmericansfromTaxHikesActof2015,Pub.L.114-113,div.Q,togetherwithanyfinalortemporaryTreasuryRegulations,RevenueRulings,otheradministrativepronouncementsandcaselawinterpretingSections6221through6241oftheCode(andanyanalogousprovisionofstateorlocaltaxlaw).

“BusinessDay”meansanydayoftheweekotherthanaSaturday,SundayoradayonwhichthecommercialbanksinNewYorkCityarenotopenforbusiness.

“CapitalAccount”shallhavethemeaningsetforthinSection7.3.

“CapitalContribution”meansanycontributiontothecapitaloftheCompanyincashorpropertybyaMemberwhenevermadeandincludesAdditionalCapitalContributions.

“Certificate”shallhavethemeaningsetforthintherecitalstothisAgreement.

“ClassCMembershipInterests”shallhavethemeaningsetforthintherecitalstothisAgreement.

“ClassCRepurchase”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Code”meanstheInternalRevenueCodeof1986,asamended.

“Company”shallhavethemeaningsetforthinthepreambletothisAgreement.

“CompanyCreditSupport”shallhavethemeaningsetforthinSection4.4(b).

“CompanyLevelTaxes”meansanyfederal,state,orlocaltaxes,additionstotax,penalties,andinterestpayablebytheCompanyasaresultofanyexaminationoftheCompany’saffairsbyanyfederal,state,orlocaltaxauthorities,includingresultingadministrativeandjudicialproceedingsundertheBipartisanBudgetAct.

“ConfidentialInformation”shallhavethemeaningsetforthinSection4.6(c).

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“Control”meansthepossession,directlyorindirectly,ofthepowertodirectorcausethedirectionofthemanagementandpoliciesofaPerson,whetherthroughownershipofvotingsecurities,bycontractorotherwise.

“CoveredPerson”meansacurrentorformerMember(including,fortheavoidanceofdoubt,theManagingMemberinitscapacityasthe“manager”oftheCompany),anAffiliateofacurrentorformerMember,anyofficer,manager,shareholder,partner,member,employee,advisor,representativeoragentofacurrentorformerMember,oranycurrentorformerofficer,employeeoragentoftheCompany.

“CreditSupportNon-ContributingMember”shallhavethemeaningsetforthinSection4.4(b).

“DelawareAct”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Depreciation”means,foreachAccountingPeriodorotherrelevantperiod,anamountequaltodepreciation,amortizationorothercostrecoverydeductionallowablewithrespecttoanassetforsuchAccountingPeriodorotherrelevantperiod,exceptthatiftheGrossAssetValueofanassetdiffersfromitsadjustedbasisforfederalincometaxpurposesatthebeginningofsuchAccountingPeriodorotherrelevantperiod,DepreciationshallbedeterminedwithreferencetosuchbeginningGrossAssetValueusinganyreasonablemethodselectedbytheManagingMember.

“DistributableAmounts”shallhavethemeaningsetforthinSection9.1.

“EconomicRiskofLoss”hasthemeaningassignedtothatterminTreasuryRegulationsSection1.752-2(a).

“EffectiveDate”shallhavethemeaningsetforthinthepreambletothisAgreement.

“ExecutiveFamilyVehicle”shallhavethemeaningsetforthintherecitalstothisAgreement.

“FinancingAgreement”meansanycreditorloanagreement,notepurchaseagreementorsimilarfinancingagreementtowhichtheCompanyispartyasborrower,asrevised,amended,restatedorsupplementedfromtimetotime.

“FinancingAgreementTransactionDocuments”meansanyFinancingAgreementandanynotes,collateralorguarantyagreements,controlagreements,mortgagesordeedsoftrust,pledgeagreements,securityagreements,consentstoassignment,instruments,agreements,documentsandcertificatestoevidenceorsecuretheFinancingAgreementorobligationsthereunderandanyfinancingstatements,certificates,documentsandinstrumentsrelatedtheretoorexecutedorprovidedinconnectiontherewith,eachasrevised,amended,restatedorsupplementedfromtimetotime.

“FirstAmendedandRestatedAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

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“FourthAmendedandRestatedAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“GAAP”meansgenerallyacceptedaccountingprinciplesasineffectfromtimetotimeintheUnitedStatesofAmerica.

“GovernmentalAuthority”meansanyfederal,national,regional,state,municipalorlocalgovernment,anypoliticalsubdivisionoranygovernmental,judicial,publicorstatutoryinstrumentality,tribunal,court,arbitralpanel,orotherregulatorybureau,authority,bodyorentityhavinglegaljurisdictionoverthematterorPersoninquestion.

“GrossAssetValue”means,withrespecttoanyasset,theasset’sadjustedbasisforU.S.federalincometaxpurposes,exceptasfollows:

(a)TheinitialGrossAssetValueofanyassetcontributedbyaMembertotheCompanyshallbethegrossfairmarketvalueofsuchasset,asdeterminedbytheManagingMember;

(b)TheGrossAssetValuesofallCompanyassetsshallbeadjustedtoequaltheirrespectivegrossfairmarketvalues,asdeterminedbytheManagingMember,asofthefollowingtimes:

(i) theacquisitionofadditionalUnitsbyanyneworexistingMemberinexchangeformorethanademinimisCapitalContribution;

(ii) thedistributionbytheCompanytoaMemberofmorethanademinimisamountofCompanypropertyasconsiderationforaninterestintheCompany;

(iii) theliquidationoftheCompanywithinthemeaningofTreasuryRegulationsSection1.704-1(b)(2)(ii)(g);

(iv) thegrantofUnits(otherthanademinimisamountofUnits)inconsiderationfortheprovisionofservicestoorforthebenefitoftheCompany;and

(v) anyothereventtotheextentdeterminedbytheManagingMembertobenecessarytoproperlyreflecttheGrossAssetValuesinaccordancewiththestandardssetforthinTreasuryRegulationsSection1.704-1(b)(2)(iv)(q);

provided,thatanyadjustmentspursuanttoclause(i)or(ii)aboveshallbemadeonlyiftheManagingMemberreasonablydeterminesthattheadjustmentsarenecessaryorappropriatetoreflecttherelativeeconomicinterestsoftheMembersintheCompany;

(c)TheGrossAssetValueofanypropertydistributedtoanyMembershallbethegrossfairmarketvalueofsuchassetonthedateofthedistribution,asdeterminedbytheManagingMember;and

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(d)TheGrossAssetValuesofalloftheCompanyassetsshallbeincreased(ordecreased)toreflectanyadjustmentstotheadjustedbasisofsuchassetspursuanttoCodeSections734(b)or743(b)butonlytotheextentthatsuchadjustmentsaretakenintoaccountindeterminingCapitalAccountspursuanttoTreasuryRegulationsSection1.704-1(b)(2)(iv)(m);provided,however,thatGrossAssetValueshallnotbeadjustedpursuanttothissubsection(d)totheextenttheCompanydeterminesthatanadjustmentpursuanttosubsection(b)hereofisnecessaryorappropriateinconnectionwiththetransactionthatwouldotherwiseresultinanadjustmentpursuanttothissubsection(d).

IftheGrossAssetValueofanassethasbeendeterminedoradjustedpursuanttosubsection(a),(b)or(d)hereof,suchGrossAssetValueshallthereafterbeadjustedbytheDepreciationtakenintoaccountwithrespecttosuchassetforpurposesofcomputingNetProfitandNetLoss.

“Liquidator”shallhavethemeaningsetforthinSection13.2.

“Magnolia”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Majority-in-Interest”means,asofanygivenrecorddateorotherapplicabletime,theMembersholdinganOwnershipPercentage,individuallyorcollectively,inexcessof50%asofsuchdate.

“ManagingMember”shallhavethemeaningsetforthinthepreambletothisAgreement.

“Member”meanseachoftheManagingMember,AMIDHoldingsandanyPersonadmittedasanadditionalorsubstitutememberoftheCompanypursuanttothisAgreement.

“MemberLoan”shallhavethemeaningsetforthinSection4.4(c)(i).

“MemberNonrecourseDebt”hasthemeaningassignedtotheterm“partnernonrecoursedebt”inTreasuryRegulationsSection1.704-2(b)(4).

“MemberNonrecourseDebtMinimumGain”hasthemeaningassignedtotheterm“partnernonrecoursedebtminimumgain”inTreasuryRegulationsSection1.704-2(i)(2).

“MemberNonrecourseDeductions”hasthemeaningassignedtotheterm“partnernonrecoursedeductions”inTreasuryRegulationsSection1.704-2(i)(1).

“MembershipInterests”means,withrespecttoanyMember,suchMember’srespectivemembershipinterestintheCompany.

“MinimumGain”hasthemeaningassignedtotheterm“partnershipminimumgain”inTreasuryRegulationsSection1.704-2(d).

“NameChange”shallhavethemeaningsetforthintherecitalstothisAgreement.

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“NetProfit”and“NetLoss”means,withrespecttoanyAccountingPeriodorotherrelevantperiod,netprofitornetlossoftheCompanyforsuchperiod,determinedinaccordancewithSection703(a)oftheCode,includinganyitemsthatareseparatelystatedpursuanttoSection703(a)(1)oftheCode,asdeterminedinaccordancewithU.S.federalincometaxaccountingprincipleswiththefollowingadjustments:

(a)AnyincomeordeductionsfortaxpurposesattributabletoanelectionunderSection754oftheCodeshallbedisregarded;

(b)ThereshallbeaddedtotaxableincomeorlosstheamountofanyreceiptthatispermanentlyexcludedfromgrossincomebytheCode,butwhichisnotacapitalcontribution,loanproceed,recoveryofcapital,orpartofanonrecognitionexchange;

(c)ThereshallbesubtractedfromtaxableincomeorlossanycostthatisnotcurrentlydeductibleorcapitalizedfortaxpurposesunderSection705(a)(2)(B)oftheCode(ortreatedasexpendituresdescribedinSection705(a)(2)(B)oftheCodepursuanttoTreasuryRegulationsSection1.704-1(b)(2)(iv)(i));

(d)Inlieuofdepreciation,amortizationandothercostrecoverydeductionstakenintoaccountincomputingsuchtaxableincomeorloss,thereshallbetakenintoaccountDepreciationforsuchfiscalyearorotherperiod;

(e)GainorlossresultingfromanydispositionofanyCompanyassetwithrespecttowhichgainorlossisrecognizedforU.S.federalincometaxpurposesshallbecomputedbyreferencetotheGrossAssetValueoftheassetdisposedof,notwithstandingthattheadjustedtaxbasisofsuchassetdiffersfromitsGrossAssetValue;

(f)IntheeventtheGrossAssetValueofanypartnershipassetisadjustedpursuanttosubsection(b)or(d)ofthedefinitionofGrossAssetValue,theamountofsuchadjustmentshallbetakenintoaccountasanitemofgain(iftheadjustmentincreasesthebasisoftheasset)orasanitemofloss(iftheadjustmentdecreasessuchbasis)fromthedispositionofsuchassetforthepurposeofcomputingNetProfitandNetLoss;

(g)TotheextentanadjustmenttotheadjustedtaxbasisofanyassetpursuanttoCodeSection734(b)isrequired,pursuanttoTreasuryRegulationsSection1.704-1(b)(2)(iv)(m)(4),tobetakenintoaccountindeterminingCapitalAccountbalancesasaresultofadistributionotherthaninliquidationofaMember’sinterestintheCompany,theamountofsuchadjustmentshallbetreatedasanitemofgain(iftheadjustmentincreasesthebasisoftheasset)oranitemofloss(iftheadjustmentdecreasessuchbasis)fromthedispositionofsuchassetandshallbetakenintoaccountforpurposesofcomputingNetProfitorNetLoss;and

(h)Notwithstandinganyotherprovisionsofthisdefinition,thereshallnotbetakenintoaccountanyitemswhichareallocatedpursuanttoSection8.2.

“Non-ManagingMembers”meansallMembersotherthantheManagingMember.

“NonrecourseDeductions”hasthemeaningassignedtothatterminTreasuryRegulationsSection1.704-2(b).

“Officer”shallhavethemeaningsetforthinSection5.4.

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“OwnershipPercentage”means,atanytime,withrespecttoeachMember,thenumberofUnitsheldbysuchMemberatsuchtimedividedbythetotalnumberofUnitsissuedatsuchtime.

“Person”meansanyindividual,corporation,association,partnership(generalorlimited),jointventure,trust,estate,limitedliabilitycompanyorotherlegalentityororganization.

“Pre-EmptiveRightsExercisePeriod”shallhavethemeaningsetforthinSection7.2(c).

“PurchaseAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“RegulatoryAllocations”shallhavethemeaningsetforthinSection8.2(g).

“RemainingInterests”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Representatives”shallhavethemeaningsetforthinSection4.6(a).

“SecondAmendedandRestatedAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“SecuritiesAct”meanstheSecuritiesActof1933,asamendedfromtimetotime.

“Subsidiary”means,withrespecttoanyPerson,anycorporation,limitedliabilitycompany,partnershiporotherlegalentityofwhichsuchPerson(eitheraloneorthroughortogetherwithanyotherSubsidiary)(a)owns,directlyorindirectly,fiftypercent(50%)ormoreofthestock,limitedliabilitycompanyinterests,partnershipinterestsorotherequityinterestswhicharegenerallyentitledtovotefortheelectionofthedirectors,managersorothergoverningbodyofsuchcorporation,limitedliabilitycompany,partnershiporotherlegalentityor(b)possesses,directlyorindirectly,controloverthedirectionofmanagementorpoliciesofsuchcorporation,limitedliabilitycompany,partnershiporotherlegalentity(whetherthroughownershipofvotingsecurities,byagreementorotherwise).

“Tax-AuthorityNotice”shallhavethemeaningsetforthinSection10.2(b).

“TaxMattersRepresentative”shallhavethemeaningsetforthinSection10.2(b).

“ThirdAmendedandRestatedAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“ThirdCoastMidstream”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Third-PartyPurchaser”meansaPersonwho,inabonafide,arms-lengthtransaction,purchasesoracquiresoneormoreUnitsinexchangeforvaluableconsiderationandisnot,immediatelypriortoanyproposedTransfer,(a)aMember,(b)anAffiliateofaMemberor(c)thecollateralagentforthesecuredpartiesunderanyFinancingAgreementTransactionDocumentswhoisreceivingaTransferofUnitspursuanttoSection12.2(b).

“Transfer”meansasale,pledge,assignment,hypothecation,transferordisposition,ortheactofsodoing,asthecontextrequires.

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“TransferredInterests”shallhavethemeaningsetforthintherecitalstothisAgreement.

“TreasuryRegulations”meanstheRegulationsoftheTreasuryDepartmentoftheUnitedStatesissuedpursuanttotheCode.

“Units”shallhavethemeaningsetforthinSection7.1.

ARTICLEII.FORMATIONOFTHECOMPANY

Section2.1Formation.OnAugust20,2009,theCertificatewasfiledintheofficeoftheSecretaryofStateoftheStateofDelawareinaccordancewiththeDelawareAct.Effectiveasofthedateandtimeofsuchfiling,theCompanyhasbeenformedasalimitedliabilitycompanyundertheDelawareAct.

Section2.2CompanyName.ThenameoftheCompanyisThirdCoastMidstreamHoldings,LLC.ThebusinessoftheCompanymaybeconductedundersuchothernamesastheManagingMembermayfromtimetotimedesignate;provided,thattheCompanycomplieswithallrelevantstatelawsrelatingtotheuseoffictitiousandassumednames.

Section2.3TermofCompany.TheCompany’sexistencecommenceduponthefilingoftheCertificateintheofficeoftheSecretaryofStateoftheStateofDelaware,andtheCompany’sexistenceshallcontinueunlessanduntildissolvedasprovidedinArticleXIII.

Section2.4RegisteredAgentandOffice.TheCompany’sregisteredagentandofficeintheStateofDelawareshallbeTheCorporationTrustCompany,1209OrangeStreet,Wilmington,Delaware,19801.TheManagingMembermaydesignateanotherregisteredagentand/orregisteredofficefromtimetotimeinaccordancewiththethen-applicableprovisionsoftheDelawareActandanyotherapplicablelaws.

Section2.5PrincipalPlaceofBusiness.TheprincipalplaceofbusinessoftheCompanyshallbelocatedatc/oArcLightCapitalPartners,LLC,200ClarendonStreet,55thFloor,Boston,Massachusetts02116.ThelocationoftheCompany’sprincipalplaceofbusinessmaybechangedbytheManagingMemberfromtimetotimeinaccordancewiththethen-applicableprovisionsoftheDelawareActandanyotherapplicablelaws.

Section2.6FiscalYearTaxableYear.ThefiscalyearoftheCompanyforfinancialaccountingpurposesshallendonDecember31.ThetaxableyearoftheCompanyforU.S.federal,stateandlocalincometaxpurposesshallendonDecember31orsuchotherdateasmayberequiredbytheCode.

ARTICLEIII.PURPOSEANDPOWERSOFTHECOMPANY

Section3.1Purpose.ThepurposesoftheCompanyare(a)theownership,operation,management,financing,acquisitionanddivestitureofnaturalgasgathering,conditioning,processingandtransportationassetsandothermidstreampropertiesand(b)anyotherbusinessoractivitythatmaybelawfullyconductedbyalimitedliabilitycompanyorganizedundertheDelawareAct.Anyoralloftheforegoingactivitiesmaybeconducted,subjecttothetermsofthisAgreement,directlybytheCompanyorindirectlythroughanotherPerson.

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Section3.2PowersoftheCompany.TheCompanyshallhavethepowerandauthoritytotakeanyandallactionsthatarenecessary,appropriate,advisable,convenientorincidentaltoorforthefurtheranceofthepurposessetforthinSection3.1.

Section3.3CertainTaxMatters.TheMembersintendthattheCompanyshallbetreatedasapartnershipforfederaland,ifapplicable,stateandlocalincometaxpurposes,andeachMembershallfilealltaxreturnsandshallotherwisetakealltaxandfinancialreportingpositionsinamannerconsistentwithsuchtreatmentunlessotherwiserequiredbyapplicablelaw.TheCompanyshallnotelect,andtheManagingMembershallnotpermittheCompanytoelect,tobetreatedasanassociationtaxableasacorporationforU.S.federal,stateorlocalincometaxpurposesunderTreasuryRegulationsSection301.7701-3orunderanycorrespondingprovisionofstateorlocallaw,andtheCompanyandtheManagingMembershallnotpermittheregistrationorlistingofinterestsintheCompanyonan“establishedsecuritiesmarket”ora“secondarymarket”orthesubstantialequivalentthereof,assuchtermsareusedinTreasuryRegulationsSection1.7704-1.

ARTICLEIV.MEMBERS

Section4.1PowersofMembers.TheMembersshallhavethepowertoexerciseanyandallrightsandpowersgrantedtotheMemberspursuanttotheexpresstermsofthisAgreement.TheapprovalorconsentoftheMembersshallnotberequiredinordertoauthorizethetakingofanyactionbytheCompany,andtheNon-ManagingMembersshallhavenorighttoreject,overturn,override,vetoorotherwiseapproveorpassjudgmentuponanyactiontakenbytheManagingMemberoranauthorizedofficeroftheCompany,unlessandthenonlytotheextentthat(a)thisAgreementshallexpresslyprovidetherefor,(b)suchapprovalorconsentshallberequiredbynon-waivableprovisionsoftheDelawareActor(c)theManagingMembershallhavedeterminedinitssolediscretionthatobtainingsuchapprovalorconsentwouldbeappropriateordesirable.TheNon-ManagingMembers,intheirrespectivecapacitiesasMembers,shallhavenopowertobindtheCompany.

Section4.2VotingandEconomicRightsofMembers.EachMemberwillhavevotingrightswithrespecttothenumberofUnitsownedbysuchMemberasprovidedinSection4.3(d)andshallhavetherightswithrespecttoprofitsandlossesoftheCompanyanddistributionsfromtheCompanyasaresetforthherein.

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Section4.3MeetingsofMembers.

(a)Meetings;NoticeofMeetings.MeetingsoftheMembersshallbeheldonasemi-annualbasisonadateandatatimedesignatedbytheManagingMember.Additionally,specialmeetingsoftheMembersmaybecalledbytheManagingMemberfromtimetotimebydeliveringwrittennoticeofsuchmeeting.NoticeofanymeetingoftheMembersshallbegiventoallNon-ManagingMembersnotlessthanfivenormorethan30BusinessDayspriortothedateofsuchmeetingandshallstatethelocation,dateandhourofthemeetingand,withrespecttoanyspecialmeetingsoftheMembers,thenatureofthebusinesstobetransacted.Meetingsshallbeheldatthelocation(withinorwithouttheStateofDelaware)atthedateandhoursetforthinthenoticeofthemeeting.

(b)WaiverofNotice.NonoticeofanymeetingofMembersneedbegiventoanyMemberwhosubmitsasignedwaiverofnotice,whetherbeforeorafterthemeeting.Neitherthebusinesstobetransactedat,northepurposeof,anymeetingoftheMembersneedbespecifiedinawrittenwaiverofnotice.TheattendanceofanyMemberatameetingofMembersshallconstituteawaiverofnoticeofsuchmeeting,exceptwhentheMemberattendsameetingfortheexpresspurposeofobjecting,atthebeginningofthemeeting,tothetransactionofanybusinessonthegroundthatthemeetinghasnotbeenlawfullycalledorconvened.

(c)Quorum.ExceptasotherwiserequiredbyapplicablelaworbytheCertificate,thepresenceinpersonorbyproxyoftheownersofrecordofaMajority-in-InterestshallconstituteaquorumforthetransactionofbusinessatameetingofMembers.

(d)Voting.IftheManagingMemberhasfixedarecorddate,everyMembershallbeentitledtosuchnumberofvotesasisequaltotheOwnershipPercentageofsuchMemberatthecloseofbusinessonsuchrecorddate.Ifnorecorddatehasbeensofixed,theneveryMembershallbeentitledtosuchnumberofvotesasisequaltotheOwnershipPercentageofsuchMemberonthecloseofbusinessonthedayprecedingthedayonwhichnoticeofthemeetingisgivenorthefirstconsentinrespectoftheapplicableactionisexecutedanddeliveredtotheCompany,or,ifnoticeiswaived,atthecloseofbusinessonthedayprecedingthedayonwhichthemeetingisheld.ExceptasotherwiserequiredbyapplicablelawortheCertificate,thevoteofaMajority-in-Interestatanymeetingatwhichaquorumispresentshallbesufficientforthetransactionofanybusinessatsuchmeeting.

(e)Proxies.EachMembermayauthorizeanyPersontoactforsuchMemberbyproxyonallmattersinwhichaMemberisentitledtoparticipate,includingwaivingnoticeofanymeeting,orvotingorparticipatingatameeting.EveryproxymustbesignedbytheMemberorsuchMember’sattorney-in-fact.Noproxyshallbevalidaftertheexpirationofthreeyearsfromthedatethereofunlessotherwiseprovidedintheproxy.EveryproxyshallberevocableatthepleasureoftheMemberexecutingitunlessotherwiseprovidedinsuchproxy;provided,thatsuchrighttorevocationshallnotinvalidateorotherwiseaffectactionstakenundersuchproxypriortosuchrevocation.

(f)Organization.EachmeetingofMembersshallbeconductedbysuchPersonastheManagingMembermaydesignate.

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(g)ElectronicCommunications(Members).MembersmayparticipateinanymeetingoftheMembersbymeansofconferencetelephoneorsimilarcommunicationsequipmentoverwhichallpersonsparticipatinginthemeetingcanheareachother,andsuchparticipationinameetingshallbedeemedtoconstitutepresenceinpersonatthemeeting.

(h)ActionwithoutaMeeting(Members).UnlessotherwiseprovidedinthisAgreement,anyactionthatmaybetakenatanymeetingoftheMembersmaybetakenwithoutameeting,withoutpriornoticeandwithoutavote,ifaconsentinwriting,settingforththeactionsotaken,shallbesignedbythenumberofMembersnecessarytotakesuchactioninaccordancewiththetermsofthisAgreement.AcopyoftheactiontakenbywrittenconsentshallbefiledwiththerecordsoftheCompany.

Section4.4BusinessTransactionsofaMemberwiththeCompany.

(a)Generally.AMember(oranAffiliatethereof)maylendmoneyto,borrowmoneyfrom,actassuretyorendorserfor,guaranteeorassumeoneormorespecificobligationsof,providecollateralforortransactanyotherbusinesswiththeCompanyoranyofitsSubsidiaries.

(b)ProvisionofCreditSupporttoBenefitCompany.TotheextenttheManagingMemberdeterminesthatitisnecessaryordesirablefortheCompanytopostlettersofcreditortoprovideguarantiesorotherformsofcreditsupportassecurityforcontingentobligationstothirdpartiesarisingunderanydebtfinancing,swap,cap,floor,collarorotherhedgingarrangementsorsimilarfinancialtransactionsorinordertosecuretheperformanceoftheCompanyoranyofitsSubsidiariesunderanycontract(collectively,“CompanyCreditSupport”),thentheManagingMembermaypostorprovideanyCompanyCreditSupportonbehalforforthebenefitoftheCompany.IntheeventthattheManagingMemberprovidessuchCompanyCreditSupport,theCompanyshallpaytotheManagingMemberonthelastdayofeachcalendarquarter,afeeinanamountequalto12.99%perannumonthemaximumundrawnamountofeachitemofCompanyCreditSupportduringsuchquarter.SubjecttothelastsentenceofthisSection4.4(b),theMembersshallbedeemedtohavemadeanAdditionalCapitalContributionforallpurposesunderthisAgreement,includingthecreditingofamountstoCapitalAccounts,onaproratabasisinaccordancewiththeirrespectiveOwnershipPercentagesintheeventthatanyCompanyCreditSupportposted,providedorotherwiseprocuredbytheManagingMemberpursuanttothisSection4.4(b)isdrawn.EachNon-ManagingMemberherebyagreestopaytheManagingMemberanamountequaltosuchNon-ManagingMember’sproratashareofanyAdditionalCapitalContributiondeemedmadepursuanttothisSection4.4(b)promptlyfollowingthemakingofsuchAdditionalCapitalContribution.IfanysuchNon-ManagingMemberfailstorepaytheManagingMembersuchNon-ManagingMember’sproratashareofanyAdditionalCapitalContributiondeemedmadepursuanttothisSection4.4(b)withinten(10)BusinessDaysfollowingnotificationtosuchNon-ManagingMemberbytheManagingMemberofthemakingofsuchdeemedAdditionalCapitalContribution(theNon-ManagingMemberfailingtomakesuchrepayment,the“CreditSupportNon-ContributingMember”),theMembersandtheCompanyshalltreattheCreditSupportNon-ContributingMember’sdeemedAdditionalCapitalContributionnotasanAdditionalCapitalContributionbysuchCreditSupportNon-ContributingMemberinexchangefortheissuanceofUnitsbutinsteadasanAdditionalCapitalContributionbytheManagingMemberonthedatedeemedmadeforallpurposesunderthisAgreement,includingthecreditingofamountstoCapitalAccounts.

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(c)AdvancesbyManagingMember.

(i)IftheCompanyrequiresadditionalfundsforthebusinessoroperationsoftheCompanyoranyofitsSubsidiariesand,subjecttothisSection4.4(c)(i),theManagingMemberdetermines(A)thataMemberLoanisnecessaryoradvisabletoadvancesuchrequiredfundstotheCompanyand(B)theamountofthefundsrequired,thentheManagingMembermay(butshallhavenoobligationto)advancetherequiredfunds,eachofwhichadvanceshall(w)constitutealoanfromtheManagingMembertotheCompany,(x)bearinterestatarateof12.99%perannum,(y)notbedeemedtobeaCapitalContributionbytheManagingMembertotheCompanyand(z)notbeconvertibleintoUnits(eachsuchloan,a“MemberLoan”);provided,thatpromptlyafterthefundingofsuchMemberLoan,theManagingMembershalloffertoeachNon-ManagingMembertherighttopurchase,atparvalue,suchNon-ManagingMember’sOwnershipPercentageofsuchMemberLoan.

(ii)RepaymentsofMemberLoansshallbemade:(A)first,onaproratabasistopayaccruedinteresttothedateofsuchpaymentonalloutstandingMemberLoansand(B)second,onaproratabasistopayprincipaldueandpayableonalloutstandingMemberLoans.Fortheavoidanceofdoubt,anyMemberLoanshallbeacontractualobligationoftheCompanyandamountspayabletotheManagingMemberthereundershallreduceDistributableAmountsinaccordancewiththedefinitionthereof.

Section4.5NoCessationofMembershipuponBankruptcy.APersonshallnotceasetobeaMemberoftheCompanyuponthehappening,withrespecttosuchPerson,ofanyoftheeventsspecifiedinSection18-304oftheDelawareAct.

Section4.6Confidentiality.

(a)EachMembershallmaintain,andshallcauseitsAffiliates(otherthantheCompanyanditsSubsidiariesinrespectofConfidentialInformationofsuchPersons)tomaintain,theconfidentialityofallConfidentialInformationwithrespecttotheCompany,theotherMembersandtheirrespectiveAffiliates,andthebusinessandassetsoftheCompany;provided,however,thatanyMembermaydisclosesuchConfidentialInformation(i)inanyjudicialoralternativedisputeresolutionproceedingtoresolvedisputesbetweentheCompanyandanyMemberarisinghereunder;(ii)totheextentdisclosureislegallyrequiredunderapplicablelaws(includingapplicablesecuritiesandtaxlaws)oranyagreementtowhichtheCompanyisapartyorbywhichitisboundsolongaspriortomakinganylegally-requireddisclosuresinanyjudicial,regulatoryordisputeresolutionproceeding,thatMembershall,ifsoadvisedbycounsel,seekaprotectiveorderorotherrelieftopreventorreducethescopeofsuchdisclosure;(iii)totheCompany’sthen-existingorpotentiallenders(andanytrusteeoragentactingonsuchlenders’behalf),investors,jointinterestowners,purchasersorotherpartieswithwhomtheCompanymayenterintocontractualrelationships,solongassuchThirdPartiesagreetomaintaintheconfidentialityoftheConfidentialInformationsodisclosed;(iv)tosuchMember’sanditsAffiliates’respectiveequityholders,managers,officers,directors,trustees,lenders,partners,employees,agents,accountants,representativesandprofessionalconsultants(“Representatives”)onaneed-to-know-basis(whichmayincludeprovidingreportstosuchMember’sequityholdersorAffiliatesintheordinarycourseofbusiness)solongassuchRepresentativesagreetomaintaintheconfidentialityoftheConfidentialInformationsodisclosed;or(v)ifauthorizedbytheManagingMember.

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(b)TheprovisionsofthisSection4.6shallsurvivetheterminationoftheCompany.

(c)ForpurposesofthisSection4.6,“ConfidentialInformation”shallmeananyandallconfidentialandproprietaryinformationandtradesecretsoftheCompanyortheMembersortheirrespectiveAffiliates,including(i)anyfinancial,commercial,technicalorotherinformation;(ii)anyinformationpertainingtothebusiness,affairsandstrategiesoftheCompany,theMembersortheirrespectiveAffiliates;(iii)anyinformationorknowledgepertainingtoanyexistingprojectsorprojectsindevelopment;(iv)theidentityofandanyinformationpertainingtoanypersonorentitywithwhichtheCompany,theMembersortheirrespectiveAffiliateshaveabusinessrelationshiporprospectivebusinessrelationship;(v)theterms,conditionsandpricesofanycontractbetweentheCompanyandanyotherparty;(vi)informationpertainingtoemployees,contractorsandtheindustrynotgenerallyknowntothepublic;(vii)books,records,concepts,products,formulae,specifications,designs,processes,inventions,discoveries,technologies,trademarks,patentsandknow-how;and(viii)thetermsandprovisionsofthisAgreement.

(d)WithrespecttoeachMember,therestrictionssetforthinthisSection4.6shallnotapplytoinformationthat(i)is,orafterthedateofthisAgreement,becomesgenerallyavailabletothepublic,otherthanthroughthewrongfulactofanyPerson,(ii)afterthedateofthisAgreement,iscommunicatedtosuchMemberinanon-confidentialmannerbyathirdpartywithoutanybreachofthisSection4.6orbreachofanyconfidentialityobligationsofsuchthirdpartytotheCompanyor(iii)wasorisalreadyinthepossessionofsuchMemberatthetimeofitsdisclosurebytheCompanybutonlyifsuchMembercameintopossessionofsuchinformationthroughmeansotherthanthatwhichwouldconstituteabreachofthisSection4.6orabreachoftheconfidentialityobligationsofanythirdpartytotheCompanydisclosingsuchinformation.

Section4.7OtherBusinessforMembers.AnyMemberorAffiliatethereofmayengageinorpossessaninterestinotherbusinessventuresofanynatureordescription,independentlyorwithoronbehalfofothers,similarordissimilartothebusinessoftheCompanyoranyofitsSubsidiaries,andtheCompanyandtheMembersshallhavenorightsbyvirtueofthisAgreementinandtosuchindependentventuresortheincomeorprofitsderivedtherefrom,andthepursuitofanysuchventure,evenifcompetitivewiththebusinessoftheCompanyoranyofitsSubsidiaries,shallnotbedeemedwrongfulorimproper.NoMembernoritsrespectiveAffiliateswillbeobligatedtopresentanyparticularinvestmentopportunitytotheCompany,evenifsuchopportunityisofacharacterthat,ifpresentedtotheCompany,couldbetakenbytheCompanyoranyofitsSubsidiaries.Furthermore,eachMemberandeachofitsrespectiveAffiliatesshallhavetherighttotakeforsuchPerson’sownaccount(individuallyorasapartnerorfiduciary)ortorecommendtoothersanysuchparticularinvestmentopportunitywithoutliabilitytotheCompanyoranyotherMember.

Section4.8Financing.TheNon-ManagingMembersrecognizethattheManagingMembermaycreate,incur,assumeormateriallymodifythetermsofanyindebtednessoftheCompanypursuanttoanyFinancingAgreementTransactionDocuments,andeachNon-ManagingMemberherebyagreestocooperatewiththereasonablerequestsoftheManagingMemberinconnectiontherewith.

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ARTICLEV.MANAGEMENT

Section5.1ManagingMember.ThebusinessandaffairsoftheCompanyshallbemanagedbyorunderthedirectionoftheManagingMember.TheManagingMembershallhavefull,exclusiveandcompletediscretiontomanageandcontrolthebusinessandaffairsoftheCompanyanditsSubsidiaries,tomakealldecisionsaffectingthebusinessandaffairsoftheCompanyanditsSubsidiariesandtotakeallsuchactionsasitdeemsnecessaryorappropriatetoaccomplishthepurposesoftheCompanyassetforthherein,includingtotakeanyofthefollowingactionswithrespecttotheCompanyoritsSubsidiaries(includingbytheexerciseofanymanagement,votingorapprovalrightsassociatedwithequityinterestsheldbytheCompanyinThirdCoastMidstream):

(a)enterintoanyconsolidation,conversion,mergerorotherbusinesscombination;

(b)enterinto,assume,amend,materiallymodifyorterminateanycontract,agreementorundertakingforthefinancing,operationorownershipoftheassetsoftheCompanyoranyofitsSubsidiaries;

(c)acquire,holdanddisposeofassets;

(d)amendormodifytheorganizationaldocumentsofanySubsidiary;

(e)create,incur,assume,amendormateriallymodifythetermsofanyindebtednessoftheCompanyoranyofitsSubsidiaries;

(f)mortgageorencumberassetsoftheCompanyoranyofitsSubsidiaries;

(g)appoint,removeandreplaceofficersordirectorsoftheCompanyoranyofitsSubsidiaries;

(h)declareandmakedistributionsascontemplatedherein;

(i)authorizeandissueUnitsorotherequityinterestsintheCompanyoranyofitsSubsidiaries;and

(j)exerciseallpowersoftheCompanysetforthinSection3.2.

Section5.2CompensationofManagingMember.TheManagingMembershallbereimbursedforalloftheexpensesitreasonablyincursinconnectionwithitsserviceastheManagingMember.

Section5.3ManagingMemberas“Manager”.TheManagingMemberisherebydesignatedasa“manager”(withinthemeaningoftheDelawareAct)oftheCompany.

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Section5.4Officers.TheManagingMembermayappoint,fromtimetotime,officersandagentstoactfortheCompany(each,an“Officer”)withsuchtitles(includingPresident,VicePresident,SecretaryandTreasurer),ifany,astheManagingMemberdeemsappropriateanddelegatetotheOfficerssuchpowersandauthorityastheManagingMembermaydetermineinitssolediscretion.AnydelegationpursuanttothisSection5.4mayberevokedatanytimebytheManagingMember.AnyOfficermayberemovedwithorwithoutcausebytheManagingMember,exceptasotherwiseprovidedinanyservicesoremploymentagreementbetweensuchOfficerandtheCompanyoranySubsidiaryoftheCompanythatemployssuchindividual(asanemployee,consultantorotherwise).TheOfficersoftheCompanyasoftheEffectiveDateareassetforthonExhibitBattachedheretoandshallhavesuchresponsibilitiesasexpresslydelegatedhereintoOfficers.

ARTICLEVI.REPRESENTATIONSANDWARRANTIES

Section6.1RepresentationsandWarrantiesoftheMembers.EachMemberherebyrepresentsandwarrantstoeachotherMemberasfollows:

(a)Existence.ForeachMemberthatisnotanaturalperson,suchMemberisdulyandvalidlyformed,isexistingandingoodstandingunderthelawsofthestateofitsformationandhasallrequisitepowerandauthoritytoenterintoandperformitsobligationsunderthisAgreement.SuchMemberisdulyqualifiedorlicensedtodobusinessineachjurisdictionwherethefailuretodulyqualifyorbecomelicensedwouldadverselyaffectsuchMember’sabilitytoperformitsobligationsunderthisAgreement.

(b)Authorization.ForeachMemberthatisnotanaturalperson,theexecution,deliveryandperformancebysuchMemberofthisAgreementandtheconsummationofthetransactionscontemplatedherebyhavebeendulyandvalidlyauthorizedbyallnecessaryactiononthepartofsuchMember,nootheractiononthepartofsuchMemberoritsshareholdersormembers,ifany,beingnecessary.ForeachMemberthatisanaturalperson,suchMemberhasfullpowerandauthoritytoexecute,deliverandperformthisAgreementandtoconsummatethetransactionscontemplatedhereby.

(c)Enforceability.ThisAgreementconstitutesthelegal,validandbindingobligationsofsuchMemberenforceableagainstsuchMemberinaccordancewithitsterms,exceptassuchenforceabilitymaybelimitedbybankruptcy,insolvency,reorganization,arrangement,moratoriumorothersimilarlaws,noworhereafterineffect,relatingtooraffectingtherightsofcreditorsgenerally,orbygeneralequitableprinciples.

(d)ConsentsandApprovals.Noconsentorapprovalby,filingwithornoticetoanyPersonisrequiredonthepartofsuchMemberforthevalidexecutionanddeliveryofthisAgreementandtheperformanceofitsobligationshereunder.

(e)NoViolation.SuchMember’sexecutionanddeliveryofthisAgreementandperformanceofitsobligationshereunderdonotandwillnot(i)withrespecttoeachMemberthatisnotanaturalperson,violateorconflictwiththeorganizationaldocumentsofsuchMember;(ii)violateorconflictwithanylaw,regulationororderofanycourtorotherGovernmental

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Authoritywhichisbindingon(A)suchMemberoranyAffiliateofsuchMemberor(B)assetsofsuchMemberoranyAffiliateofsuchMember;or(iii)violateorresultinadefaultunderorresultintheterminationoraccelerationof(withorwithoutthegivingofnotice,thepassageoftimeorboth)anyobligationunderanycontracttowhichsuchMemberoranyAffiliateofsuchMemberispartyorbywhichanysuchPersonoranysuchPerson’sassetsarebound.

(f)InvestmentPurpose.SuchMemberisacquiringUnits(i)forsuchMember’sownaccountandnotdirectlyorindirectlyfortheaccountofanyotherPersonand(ii)forinvestmentandnotwithaviewtotheirsaleordistribution.SuchMemberunderstandsthattheUnitshavenotbeenregisteredundertheSecuritiesActandmayberesoldonlyifregisteredpursuanttotheprovisionsoftheSecuritiesActorifanexemptionfromregistrationisavailable.SuchMemberunderstandsthatnopublicmarketnowexistsfortheUnitsandthatitisunlikelythatapublicmarketwilleverexistfortheUnits.SuchMemberunderstandsthathis,heroritsinvestmentintheCompanyrepresentedbyUnitsishighlyspeculativeinnatureandissubjecttoahighdegreeofriskofloss,inwholeorinpart.

(g)ExperienceandAccreditedInvestor.

(i)SuchMember(A)isanexperiencedandsophisticatedinvestor,(B)either(x)hassuchknowledge,experienceandskillwithsecuritiesandinfinancialandbusinessmattersasarenecessarytoevaluatethemeritsandrisksofhis,heroritsinvestmentintheCompanyandinvolvementintheCompany’sbusinessandtoprotecthis,heroritsowninterestinconnectionwiththeacquisitionofhis,heroritsportionoftheUnitsor(y)hasapre-existingrelationshipwiththeManagingMemberoroneormoreOfficersconsistingofpersonalorbusinesscontactsofanatureanddurationwhichenablesuchMembertobeawareofthecharacter,businessacumenandgeneralbusinessandfinancialcircumstancesoftheCompany,theManagingMemberortheOfficerwithwhomsuchrelationshipexistsand(C)iscapableofbearingtheeconomicriskofhis,heroritsinvestmentintheCompanyandinvolvementintheCompany’sbusiness.

(ii)SuchMemberisan“accreditedinvestor”withinthemeaningofSecuritiesandExchangeCommissionRule501ofRegulationDundertheSecuritiesAct,ortheissuanceofUnitstosuchMemberisotherwiseexemptfromregistrationrequirementsundertheSecuritiesActorapplicablestateblueskyorsimilarsecuritieslaws.

(h)InvestigationandDiligence.EachMemberhasconductedhis,heroritsownindependentinvestigation,examinationandanalysisoftheprospectsoftheCompany,includingitsbusiness,operations,assets,liabilitiesandfinancialcondition,andthetermsandconditionsofthetransactionscontemplatedbythisAgreementandacknowledgesthatsuchMemberhasbeenprovidedaccesstopersonnel,informationandrecordsashe,sheoritdeemsnecessaryinconnectionwithsuchinvestigation,examinationandanalysisandtootherwisemakeafully-informeddecisionastoinvestmentintheCompanyandinvolvementintheCompany’sbusiness.SuchMemberacceptstheUnitsandhis,heroritsrightsandobligationsasaMemberbaseduponhis,heroritsowninvestigation,examinationandanalysiswithrespecttheretoastoallmattersandwithoutrelianceuponanyexpressorimpliedrepresentationsorwarrantiesofanynaturemadebyoronbehalfoforimputedtoanyotherMemberortheCompany,allexceptasexpresslysetforthherein.

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Section6.2LIMITATIONOFWARRANTIES.EACHMEMBERAGREESTHATEXCEPTFORTHEREPRESENTATIONSANDWARRANTIESEXPRESSLYSETFORTHINTHISARTICLEVI,NOMEMBERMAKESANYREPRESENTATIONORWARRANTYWHATSOEVER,WHETHEREXPRESSORIMPLIED,ATEQUITY,COMMONLAW,BYSTATUTEOROTHERWISE.EACHMEMBEREXPRESSLYDISCLAIMSANDNEGATESANYREPRESENTATIONORWARRANTY,WHETHEREXPRESSORIMPLIED,ATEQUITY,COMMONLAW,BYSTATUTEOROTHERWISE,OTHERTHANTHOSESETFORTHINTHISARTICLEVI.

ARTICLEVII.CAPITAL

Section7.1Units.TheCompanyshallhaveoneclassofUnits,whichshallbeuncertificatedanddenominatedandreferredtohereinas“Units”.EachUnitshall(a)givetheMemberwhoistheownerthereoftherighttoreceivedistributions(liquidatingorotherwise)inaccordancewithSection9.1andasotherwisespecifiedherein,(b)givetheMemberwhoistheownerthereofthevotingandotherrightswithrespecttosuchUnitasspecifiedherein,(c)haveadesignatedvalueequaltotheAdditionalMembershipUnitPrice(orinthecaseofafractionalUnit,avalueproportionaltosuchamount)and(d)beissuedforCapitalContributions.

Section7.2IssuanceofUnits.

(a)AsoftheEffectiveDate,thelimitedliabilitycompanyinterestsoftheCompanypreviouslyheldbyeachMembershallbedeemedexchangedforthelimitedliabilitycompanyinterestsoftheCompanyassetforthnexttosuchMember’snameonExhibitAattachedhereto.

(b)FromtimetotimeaftertheEffectiveDate,theCompanyisauthorizedto,andshall,acceptAdditionalCapitalContributionsmadeinaccordancewiththisAgreementinexchangefortheissuanceofUnitsasprovidedherein.

(c)FromtimetotimeaftertheEffectiveDate,theCompanyisauthorizedtoissueandsellnewUnitsonthetermsprovidedinSection7.1,Section7.5andsuchothertermsandinsuchamountsastheManagingMembermaydetermine.EachMembershallhavetherighttopurchaseitsproratashareinproportiontoitsOwnershipPercentageofnewUnitstobeissuedandsoldinaccordancewiththisSection7.2(c).IntheeventtheCompanyproposestoissueandsellnewUnitsinaccordancewiththisSection7.2(c),itshallprovidewrittennoticetoeachMember,andeachMembershallhave30calendardaysafterreceiptofsuchnotice(suchperiod,the“Pre-EmptiveRightsExercisePeriod”)toexerciseitsrighttopurchaseitsproratashareofsuchnewUnits;provided,however,thattheManagingMembermayelecttopurchaseallsuchnewUnitsimmediatelyfollowingitsreceiptofsuchnoticefromtheCompany.IntheeventtheManagingMemberpurchasesallsuchnewUnitsinaccordancewiththeprecedingsentence,eachNon-ManagingMembershallhavetheright,duringthePre-EmptiveRightsExercisePeriod,topurchaseitsproratashareofsuchnewUnitsfromtheManagingMember,atthesamepriceasthe

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ManagingMemberpaidforsuchnewUnits,uponatleast10BusinessDays’priorwrittennoticetotheManagingMember,andsuchpurchaseshallnotbedeemeda“Transfer”hereunderandshallbetreatedforallpurposesasiftherelevantNon-ManagingMemberpurchasedtherelevantUnitsfromtheCompanyinanexerciseofitspreemptiverightspursuanttothisSection7.2(c).AnyhighervaluationorotherformsofpromoteraisedfromasaleofnewUnitstoaThird-PartyPurchasershallbeforthebenefitofeachMemberinproportiontoitsOwnershipPercentageimmediatelypriortotheissuanceandsaleofnewUnitstosuchThird-PartyPurchaser.

(d)ExhibitAsetsforththeUnitsownedbyeachMemberasoftheEffectiveDateandshallberevisedbytheOfficersasnecessarytoreflectchangesandadjustmentsresultingfromtheissuance,redemptionoranyTransferofUnitsmadeinaccordancewiththetermsofthisAgreement;provided,thatafailuretoreflectanysuchissuance,redemptionoranyTransferonExhibitAshallnotpreventanysuchissuance,redemptionoranyTransferfrombeingeffective.

Section7.3CapitalAccounts.Acapitalaccount(“CapitalAccount”)shallbeestablishedforeachMemberandshallbemaintainedasprovidedinthisArticleVIIandArticleVIII.Nolaterthan60daysaftertheendofeachcalendarquarter,theOfficersshallprepareastatementoftheCapitalAccountbalancesoftheMembersasoftheendofsuchcalendarquarter.

Section7.4CapitalAccountAdjustments.AsoftheendofeachAccountingPeriod,thebalanceineachMember’sCapitalAccountshallbeadjustedby(a)increasingsuchbalancebysuchMember’s(i)allocableshareofNetProfit(allocatedinaccordancewithArticleVIII)orotherincomeandgainallocatedinaccordancewiththisAgreement,(ii)theamountofcashandtheGrossAssetValueofanyproperty(asofthedateofthecontributionthereofandnetofanyliabilitiesencumberingsuchproperty)contributedtotheCompanyduringsuchAccountingPeriod,ifany,and(iii)thenetamountofanyCompanyliabilitiesthatareassumedbysuchMemberorthataresecuredbyanyCompanyassetsdistributedtosuchMemberand(b)decreasingsuchbalanceby(i)theamountofcashandtheGrossAssetValueofanyproperty(asofthedateofthedistributionthereofandnetofanyliabilitiesencumberingsuchproperty)distributedtosuchMemberduringsuchAccountingPeriod,(ii)suchMember’sallocableshareofNetLoss(allocatedinaccordancewithArticleVIII)orotherlossanddeductionallocatedinaccordancewiththisAgreementand(iii)thenetamountofanyliabilitiesofsuchMemberthatareassumedbytheCompanyorthataresecuredbyanypropertycontributedbysuchMembertotheCompany.TheprovisionsofthisAgreementrelatingtothemaintenanceofCapitalAccountsareintendedtocomplywithTreasuryRegulationsSections1.704-1(b)and1.704-2andshallbeinterpretedandappliedinamannerconsistentwithsuchTreasuryRegulations.Inaddition,theCapitalAccountsshallbeincreasedordecreaseduponarevaluationofCompanypropertypursuanttoclause(b)ofthedefinitionofGrossAssetValueinthemannerprescribedinTreasuryRegulationsSection1.704-1(b)(2)(iv)(f).IndeterminingtheamountofanyliabilityforpurposesofthisSection7.4,thereshallbetakenintoaccountSection752oftheCodeandanyotherapplicableprovisionsoftheCodeandtheTreasuryRegulations.NotwithstandinganyprovisiontothecontraryinthisAgreement,incomeandgainoftheCompany,lossanddeductionsoftheCompany,andallotheritemsattributabletoanyUnitsTransferredfortheAccountingPeriodinwhichsuchUnitsareTransferredwillbedividedandallocatedbetween(oramong)theaffectedPersonsbytakingintoaccounttheirvaryinginterestsduringtheperiodinaccordancewithCodeSection706(d),usinganyconventionspermittedbylawandapprovedbytheManagingMemberandthepartiestosuchTransfer.

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Section7.5AdditionalCapitalContributions.

(a)Generally.NoMembershallberequiredtomakeanyAdditionalCapitalContributiontotheCompanyinrespectoftheUnitsthenheldbysuchMemberexcepttotheextentanyMemberagreesinwritingtofundAdditionalCapitalContributions.Exceptasotherwiseprovidedbelow,MembersmakingAdditionalCapitalContributionsunderthisSection7.5shallreceiveinrespectthereofanumberofUnitsdeterminedbydividing(i)theAdditionalCapitalContributionbeingmadebysuchMemberby(ii)theAdditionalMembershipUnitPrice.EachUnitissuedtoaMemberpursuanttothisSection7.5willbedulyauthorizedandvalidlyissuedinaccordancewiththisAgreementandfullypaid(totheextentrequiredbythisAgreement)andnonassessable(exceptassuchnonassessabilitymaybeaffectedbymattersdescribedin§18-607oftheDelawareAct).

(b)ContributionsinKind.WiththeapprovaloftheManagingMember,theMembersmaymakeCapitalContributionsofpropertyinlieuofcash.TheamountofeachsuchAdditionalCapitalContributionshallbethefairmarketvalueofthecontributedpropertyasdeterminedbytheManagingMemberorsuchotheramountasshallbeagreedbytheManagingMemberandthecontributingMember.

(c)NoThird-PartyBeneficiaries.TheprovisionsofthisSection7.5areintendedsolelytobenefittheMembersand,tothefullestextentpermittedbyapplicablelaw,shallnotbeconstruedasconferringanybenefituponanycreditoroftheCompany(andnosuchcreditorshallbeathird-partybeneficiaryofthisAgreement),andnoMembershallhaveanydutyorobligationtoanycreditoroftheCompanytomakeanyAdditionalCapitalContributionsortocausetheManagingMembertoconsenttothemakingofAdditionalCapitalContributions.

Section7.6NegativeCapitalAccounts.Exceptasrequiredbylaw,noMembershallberequiredtomakeupanegativebalanceinitsCapitalAccount.

Section7.7AssigneeCapitalAccounts.TheoriginalCapitalAccountestablishedforanyPersonwhoacquiresUnitsbyvirtueofaTransferinaccordancewiththetermsofthisAgreementshallbeinthesameamountas,andshallreplace,theCapitalAccountoftheassignorofsuchUnits.TotheextentsuchPersonacquireslessthanalloftheUnitsoftheassignor,theinitialCapitalAccountofsuchPersonshallbeinproportiontotheUnitsownedbytheassignorimmediatelybeforesuchTransfer,andtheCapitalAccountoftheassignorwhoretainsanyUnitsshallbereducedcorrespondingly.

ARTICLEVIII.ALLOCATIONS

Section8.1NetProfitandNetLossAllocations.ExceptasotherwiseprovidedinSection8.2,NetProfitorNetLoss,asthecasemaybe,shallbeallocatedfortheAccountingPeriodinwhichtheNetProfitandNetLosswasrecognizedasfollows:NetProfitandNetLoss(andanyitemsthereof)foranytaxableyearshallbeallocatedamongtheMembersinsuchmannerthat,asoftheendofsuchtaxableyear,thesumof(a)theCapitalAccountofeachMember,(b)suchMember’sshareofMinimumGainand(c)suchMember’sMemberNonrecourseDebtMinimumGainshallbeequaltotherespectivenetamountswhichwouldbedistributedtothemunderthisAgreement,determinedasiftheCompanywereto(i)liquidatetheassetsoftheCompanyforanamountequaltotheirGrossAssetValueand(ii)distributetheproceedsofliquidationpursuanttoSection12.2.

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Section8.2RestrictionsonAllocations.NotwithstandinganythinginthisAgreement(includingtheallocationssetforthinSection8.1)tothecontrary,thefollowingspecialallocationsshallbemade:

(a)NonrecourseDeductions.NonrecourseDeductionsforanyAccountingPeriodshallbeallocatedtotheMembersinthesameratioasotherpartnershipitemsunderSection8.1duringsuchAccountingPeriod.

(b)MemberNonrecourseDeductions.MemberNonrecourseDeductionsforanyAccountingPeriodshallbeallocated100%totheMemberthatbearstheEconomicRiskofLosswithrespecttotheMemberNonrecourseDebttowhichsuchMemberNonrecourseDeductionsareattributableinaccordancewithTreasuryRegulationsSection1.704-2(i).IfmorethanoneMemberbearstheEconomicRiskofLosswithrespecttoaMemberNonrecourseDebt,MemberNonrecourseDeductionsattributabletheretoshallbeallocatedbetweenoramongsuchMembersinaccordancewiththeratiosinwhichtheysharesuchEconomicRiskofLoss.ThisSection8.2(b)isintendedtocomplywiththeprovisionsofTreasuryRegulationsSection1.7042(i)andshallbeinterpretedconsistentlytherewith.

(c)CompanyMinimumGainChargeback.NotwithstandinganyotherprovisionofthisAgreement,ifthereisanetdecreaseinMinimumGainduringanyAccountingPeriod,eachMembershallbeallocateditemsofCompanyincomeandgainforsuchAccountingPeriod(and,ifnecessary,subsequentAccountingPeriods)inthemannerandamountsprovidedinTreasuryRegulationsSections1.704-2(f)(6),(g)(2)and(j)(2)(i).ForpurposesofthisSection8.2,eachMember’sCapitalAccountshallbedetermined,andtheallocationofincomeorgainrequiredhereundershallbeeffected,priortotheapplicationofanyotherallocationspursuanttothisArticleVIIIwithrespecttosuchAccountingPeriod.ThisSection8.2(c)isintendedtocomplywiththepartnerminimumgainchargebackrequirementinTreasuryRegulationsSection1.704-2(f)andshallbeinterpretedconsistentlytherewith.

(d)MemberNonrecourseDebtMinimumGainChargeback.NotwithstandingtheotherprovisionsofthisAgreement(otherthanSection8.2(c)above),ifthereisanetdecreaseinMemberNonrecourseDebtMinimumGainduringanyAccountingPeriod,anyMemberwithashareofMemberNonrecourseDebtMinimumGainatthebeginningofsuchAccountingPeriodshallbeallocateditemsofCompanyincomeandgainforsuchAccountingPeriod(and,ifnecessary,subsequentAccountingPeriods)inthemannerandamountsprovidedinTreasuryRegulationsSection1.704-2(i)(4)and(j)(2)(ii).ForpurposesofthisSection8.2,eachMember’sAdjustedCapitalAccountbalanceshallbedetermined,andtheallocationofincomeandgainrequiredhereundershallbeeffected,priortotheapplicationofanyotherallocationspursuanttothisArticleVIII,otherthanSection8.2(c)above,withrespecttosuchAccountingPeriod.ThisSection8.2(d)isintendedtocomplywiththepartnernonrecoursedebtminimumgainchargebackrequirementinTreasuryRegulationsSection1.704-2(i)(4)andshallbeinterpretedconsistentlytherewith.

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(e)QualifiedIncomeOffset.ExceptasprovidedinSection8.2(c)andSection8.2(d)above,intheeventanyMemberunexpectedlyreceivesanadjustment,allocationordistributiondescribedinTreasuryRegulationsSections1.704-1(b)(2)(ii)(d)(4),(5)or(6),itemsofCompanyincomeandgainshallbeallocatedtosuchMemberinanamountandmannersufficienttoeliminate,totheextentrequiredbysuchTreasuryRegulation,thedeficitbalance,ifany,initsAdjustedCapitalAccountcreatedbysuchadjustment,allocationordistributionasquicklyaspossibleunlesssuchdeficitbalanceisotherwiseeliminatedpursuanttoSection8.2(c)orSection8.2(d).ThisSection8.2(e)isintendedtoconstituteaqualifiedincomeoffsetdescribedinTreasuryRegulationsSection1.704-1(b)(2)(ii)(d)andshallbeinterpretedconsistentlytherewith.

(f)GrossIncomeAllocation.IntheeventanyMemberhasadeficitbalanceinitsAdjustedCapitalAccountattheendofanyAccountingPeriod,suchMembershallbeallocateditemsofCompanygrossincomeandgainintheamountofsuchexcessasquicklyaspossible;provided,however,thatanallocationpursuanttothisSection8.2(f)shallbemadeonlyifandtotheextentthatsuchMemberwouldhaveadeficitbalanceinitsAdjustedCapitalAccountafterallotherallocationsprovidedinthisSection8.2(otherthanSection8.2(e))havebeententativelymadeasifSection8.2(e)andthisSection8.2(f)werenotinthisAgreement.

(g)RegulatoryAllocations.TheallocationssetforthinthisSection8.2(the“RegulatoryAllocations”)areintendedtocomplywithcertainrequirementsoftheTreasuryRegulations.ItistheintentoftheMembersthat,totheextentpossible,allRegulatoryAllocationsshallbeoffseteitherwithotherRegulatoryAllocationsorwithspecialallocationsofotheritemsofCompanyincome,gain,lossordeductionpursuanttothisSection8.2(g).Therefore,notwithstandinganyotherprovisionofthisArticleVIII(otherthantheRegulatoryAllocations),butsubjecttotheCodeandtheTreasuryRegulations,theManagingMembershallmakesuchoffsettingspecialallocationsofCompanyincome,gain,lossordeductioninwhatevermanneritdeterminesappropriatesothat,aftersuchoffsettingallocationsaremade,eachMember’sCapitalAccountbalanceis,totheextentpossible,equaltotheCapitalAccountbalancesuchMemberwouldhavehadiftheRegulatoryAllocationswerenotpartofthisAgreement.InexercisingitsdiscretionunderthisSection8.2(g),theManagingMembershalltakeintoaccountfutureRegulatoryAllocationsthat,althoughnotyetmade,arelikelytooffsetotherRegulatoryAllocationspreviouslymade.

Section8.3IncomeTaxAllocations.

(a)ExceptasprovidedinthisSection8.3,eachitemofincome,gain,lossanddeductionoftheCompanyforfederalincometaxpurposesshallbeallocatedamongtheMembersinthesamemannerassuchitemsareallocatedforbookpurposesunderSection8.1andSection8.2.

(b)InaccordancewithCodeSection704(c)andapplicableTreasuryRegulations,income,gain,lossanddeductionwithrespecttoanypropertycontributedtotheCompany(oranypredecessorthereto)thathasaGrossAssetValuethatisdifferentfromitsadjustedtaxbasisshall,solelyfortaxpurposes,beallocatedamongtheMemberssoastotakeaccountofanyvariationbetweentheadjustedbasisofsuchpropertytotheCompany(oranypredecessorthereto)forU.S.federalincometaxpurposesandthefairmarketvalueofsuchpropertyforU.S.federalincometaxpurposesatthetimeofcontribution.IftheGrossAssetValue

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ofanyCompanypropertyisadjustedinaccordancewithclause(c)or(d)ofthedefinitionofGrossAssetValue,thensubsequentallocationsofincome,gain,lossanddeductionshalltakeintoaccountanyvariationbetweentheadjustedbasisofsuchpropertyforfederalincometaxpurposesanditsGrossAssetValueasprovidedinCodeSection704(c)andtherelatedTreasuryRegulations.TheallocationsdescribedinthisSection8.3shallbemadeusinganymethodpermittedunderTreasuryRegulationsSection1.704-3asdeterminedbytheManagingMember.

(c)IfanydeductionsfordepreciationorcostrecoveryarerecapturedasordinaryincomeupontheTransferofCompanyassets,theordinaryincomecharacterofthegainfromsuchTransfershallbeallocatedamongtheMembersinthesameratioasthedeductionsgivingrisetosuchordinarycharacterwereallocated.

ARTICLEIX.DISTRIBUTIONS

Section9.1DistributionsGenerally.DistributableAmounts(ashereinafterdefined)shallbedistributedwithin30BusinessDaysaftertheendofeachcalendarquarteroratanyothertimedeterminedbytheManagingMembertotheMembersprorataaccordingtotheirrelativeOwnershipPercentages.

Theterm“DistributableAmounts”meanstheamountofcashonhandfromtimetotimeinexcessofamountsrequired,asreasonablydeterminedbytheManagingMember,topayorprovideforpaymentofexistingandprojectedobligations(includingfeesandexpensespayableunderthisAgreementoranyothercontract),capitalexpenditures,acquisitionsandthereasonablyanticipatedneedsoftheCompanyanditsSubsidiariesandtoprovideareasonablereserveforworkingcapitalandcontingenciesforthenextcalendarquarter.

Section9.2DistributionsinKind.IntheeventofadistributionofCompanyproperty,suchpropertyshallforallpurposesofthisAgreementbedeemedtohavebeensoldatitsfairmarketvalue,asdeterminedbytheManagingMember,andtheproceedsofsuchsaleshallbedeemedtohavebeendistributedtotheMembers.

Section9.3NoWithdrawalofCapital.ExceptasotherwiseexpresslyprovidedinthisArticleIXorArticleXIII,noMembershallhavetherighttowithdrawcapitalfromtheCompanyortoreceiveanydistributionorreturnofsuchMember’sCapitalContributions.

Section9.4Withholding.AllamountswithheldorpaidpursuanttotheCodeoranyprovisionofanyforeign,stateorlocaltaxlawortreatywithrespecttoanypayment,distributionorallocationtotheCompany,itsSubsidiariesortheMembers(includinganyCompanyLevelTaxesorsimilartaxespaidbyaSubsidiaryoftheCompanywithrespecttoitemsofincome,gain,loss,deductionorcreditallocableorattributabletotheMembers)shallbetreatedasamountsdistributedtotheMemberspursuanttothisArticleIXforallpurposesofthisAgreement.TheManagingMemberisauthorizedtowithholdfromdistributions,orwithrespecttoallocations,totheMembersandtopayovertoanyfederal,foreign,stateorlocalgovernmentanyamountsrequiredtobesowithheldorpaidpursuanttotheCodeoranyprovisionofanyotherfederal,foreign,stateorlocallawortreatyandshallallocatetheburdenofsuchamountstothoseMemberswithrespecttowhichsuchamountsarespecificallyattributable,asdeterminedbytheManaging

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Member.EachMemberherebyagreestoindemnifyandholdharmlesstheCompany,theotherMembers,andtheTaxMattersRepresentativefromandagainstanyliability(includinganyliabilityforCompanyLevelTaxesorsimilartaxespaidbyaSubsidiaryoftheCompany)withrespecttoincomeattributableto,ordistributionsorotherpaymentsto,suchMember.NotwithstandinganyotherprovisionofthisAgreement,(a)anyPersonwhoceasestobeaMembershallbetreatedasaMemberforpurposesofthisSection9.4and(b)theobligationsofaMemberpursuanttothisSection9.4shallsurviveindefinitelywithrespecttoanytaxeswithheldorpaidbytheCompanyoraSubsidiaryoftheCompanythatrelatetotheperiodduringwhichsuchPersonwasactuallyaMember,regardlessofwhethersuchtaxesareassessed,withheldorotherwisepaidduringsuchperiod.AnydeterminationsmadebytheManagingMemberpursuanttothisSection9.4shallbebindingupontheMembers.

Section9.5RestrictedDistributions.NotwithstandinganyprovisiontothecontrarycontainedinthisAgreement,theCompanyshallnotmakeadistributiontoanyMemberonaccountofitsUnitsintheCompanyifthatdistributionwouldviolateSection18-607oftheDelawareActorotherapplicablelaworanyFinancingAgreementTransactionDocuments.

ARTICLEX.BOOKSANDRECORDS

Section10.1Books,RecordsandFinancialStatements.AtalltimesduringthecontinuanceoftheCompany,theCompanyshallmaintain,atitsprincipalplaceofbusiness,separatebooksofaccountfortheCompanythatshallshowatrueandaccuraterecordinaccordancewithGAAPofallcostsandexpensesincurred,allchargesmade,allcreditsmadeandreceivedandallincomederivedinconnectionwiththeoperationoftheCompany’sbusiness.Suchbooksofaccount,togetherwithacopyofthisAgreementandtheCertificate,shallatalltimesbemaintainedattheprincipalplaceofbusinessoftheCompany.TheCompanyshalltimelydelivertotheMembersanybudgets,financialstatementsorothermaterialreportsofThirdCoastMidstreamthataredeliveredtotheCompanybyThirdCoastMidstream.AlthoughExhibitBliststheOfficersoftheCompanyasoftheEffectiveDateandExhibitAliststheMembersandtheirrespectiveUnitsasoftheEffectiveDate,theCompanywillmaintainandkeepcurrenttheofficialbooksandrecordsoftheCompany,whichwillincludetheaforementionedinformationalongwiththeMembers’CapitalContributionsandCapitalAccountbalances,aftertheEffectiveDate.

Section10.2CertainTaxMatters.

(a)TheCompanyshallprepare,orcausetobeprepared,attheexpenseoftheCompany,foreachAccountingPeriod(orpartthereof),andshalltimelyfile,allCompanytaxreturnsandshalltimelyfileallotherwritingsrequiredbyanyGovernmentalAuthorityhavingjurisdictiontorequiresuchfiling.EachMembershallfurnishtotheCompanyallpertinentinformationinitspossessionrelatingtotheCompany’soperationsthatisnecessarytoenabletheCompany’staxreturnstobetimelypreparedandfiled.Within120daysaftertheendofeachtaxableyear,theCompanyshallsendtoeachPersonthatwasaMemberatanytimeduringsuchyearcopiesofInternalRevenueServiceScheduleK-1(Form1065),“Partner’sShareofIncome,Deductions,Credits,etc.,”oranysuccessorscheduleorform,withrespecttosuchPerson,togetherwithsuchadditionalinformationasmaybenecessaryforsuchPersontofilehis,heroritsU.S.federalincometaxreturns;provided,however,thatupontherequestofanyMemberorformerMember,theCompanyshall,bynolaterthan15daysaftertheendofthetaxableyear,furnishtosuchMemberagoodfaithestimateoftheamountsanticipatedtobereflectedonsuchScheduleK-1.

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(b)TheManagingMember(oritsdesignee)shallbe(i)the“taxmatterspartner”oftheCompany,withinthemeaningofSection6231(a)(7)oftheCodeandanyTreasuryRegulationsissuedthereunder,(ii)the“partnershiprepresentative”withinthemeaningofSection6223(a)oftheCodeandanyTreasuryRegulationsissuedthereunder,and(iii)anysimilarroleorcapacityunderrelevantstateorlocallaw(the“TaxMattersRepresentative”),unlesstheCodeortheTreasuryRegulations(orapplicablestateorlocallaw)issuedthereunderrequireanotherPersontobetheTaxMattersRepresentative.Theexpenses,ifany,thattheTaxMattersRepresentativeincursinfulfillingitscovenantspursuanttothisSection10.2shallbeexpensesoftheCompany.TheTaxMattersRepresentativewill,within10daysafterthereceiptofanynoticeregardinganauditortaxexaminationoftheCompanyoranySubsidiaryoftheCompanyoranyrequestformaterialinformationregardingtheCompanyoranySubsidiaryoftheCompanybyUnitedStatesfederal,state,localorothertaxauthorities(“Tax-AuthorityNotice”),forwardtoeachMemberaphotocopyofsuchTax-AuthorityNoticeandanymaterialcorrespondencerelatingtotheCompanyreceivedfromtherelevanttaxauthority.TheTaxMattersRepresentativewill,within10daysthereof,adviseeachMemberinwritingofthesubstanceofanyconversationaffectingtheCompanyheldwithanyrepresentativeoftherelevanttaxauthority.TheTaxMattersRepresentativeisauthorizedtotakesuchactionsandtoexecuteandfileallstatementsandformsonbehalfoftheCompanythatarepermittedorrequiredbytheapplicableprovisionsoftheBipartisanBudgetAct(includinga“push-out”electionunderSection6226oftheCodeoranyanalogouselectionunderstateorlocaltaxlaw).EachMemberagreestocooperatewiththeTaxMattersRepresentativeandtodoorrefrainfromdoinganyorallthingsrequestedbytheTaxMattersRepresentative(includingpayinganyandallresultingtaxes,additionstotax,penaltiesandinterestinatimelyfashion)inconnectionwithanyexaminationoftheCompany’saffairsbyanyfederal,state,orlocaltaxauthorities,includingresultingadministrativeandjudicialproceedings.NoMembershallhaveanyclaimagainsttheTaxMattersRepresentativeforanyactionstaken(oranyfailurestotakeaction)bytheTaxMattersRepresentativepursuanttothisSection10.2(b).

(c)InthesolediscretionoftheManagingMember,theCompanymaymakeanytaxelectionitdeemsappropriate,includingthefollowingU.S.federalincometaxelections:

(i)toadoptthecalendaryearastheCompany’sfiscalyear,ifpermittedundertheCode;

(ii)toadopttheaccrualmethodofaccounting;

(iii)toelecttoamortizetheorganizationalexpensesoftheCompanyaspermittedbyCodeSection709(b);

(iv)toadjustthebasisofCompanypropertiespursuanttoSection754oftheCode;and

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(v)anyotherelectiontheManagingMembermaydeemappropriateandinthebestinterestsoftheMembers.

(d)MiscellaneousTaxMatters.

(i)Intheeventstate,localorforeignincometaxesbecomeapplicable,anyreferencestofederalincometaxesorto“incometaxes”containedhereinshallrefertofederal,state,localandforeignincometaxes.ReferencestotheCodeorTreasuryRegulationspromulgatedthereundershallbedeemedtorefertocorrespondingprovisionsthatmaybecomeapplicableunderstate,localorforeignincometaxstatutesandregulations.

(ii)ForpurposesofdeterminingtheNetProfit,NetLossoranyotheritemsallocabletoanyperiod,NetProfit,NetLossandanysuchotheritemsshallbedeterminedonadaily,monthlyorotherbasis,asdeterminedbytheManagingMemberusinganymethodthatispermissibleunderSection706oftheCodeandtheTreasuryRegulationsthereunder.

(iii)TheMembersareawareoftheincometaxconsequencesoftheallocationsmadebythisAgreementandherebyagreetobeboundbytheprovisionsofthisAgreementinreportingtheirsharesofCompanyincomeandlossforincometaxpurposes.

(iv)AllocationsmadebytheCompanyinrelianceupontheadviceoftheCompany’saccountantsshallbedeemedtobemadepursuanttoanyfiduciaryobligationtotheCompanyandtheMembers.

(v)IfanyMembermakesaloantotheCompany,ortheCompanymakesaloantoanyMember,andinterestinexcessoftheamountactuallypayableisimputedunderCodeSections7872,483,or1271through1288orcorrespondingprovisionsofsubsequentfederalincometaxlaw,thenanyitemofincomeorexpenseattributabletoanysuchimputedinterestshallbeallocatedsolelytotheMemberwhomadeorreceivedtheloanandshallbecreditedorchargedtoitsCapitalAccount,asappropriate.

ARTICLEXI.LIABILITY,EXCULPATIONANDINDEMNIFICATION

Section11.1Liability.ExceptasotherwiseprovidedbytheDelawareAct,thedebts,obligationsandliabilitiesoftheCompany,whetherarisingincontract,tortorotherwise,shallbesolelythedebts,obligationsandliabilitiesoftheCompany,andnoCoveredPersonshallbeobligatedpersonallyforanysuchdebt,obligationorliabilityoftheCompanysolelybyreasonofbeingaCoveredPerson.

Section11.2Exculpation.NoCoveredPersonshallbeliabletotheCompanyoranyotherCoveredPersonforanyloss,damageorclaimincurredbyreasonofanyactoromissionperformedoromittedbysuchCoveredPersoningoodfaithandreasonablybelievedtobein,ornotopposedto,thebestinterestsoftheCompany,exceptthataCoveredPersonshallbeliableforanysuchloss,damageorclaimincurredbyreasonofsuchCoveredPerson’sgrossnegligence,willfulmisconductorwillfulbreachofthisAgreement.

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Section11.3FiduciaryDuty.Anyduties(includingfiduciaryduties)ofaCoveredPersontotheCompanyortoanyotherCoveredPersonthatwouldotherwiseapplyatlaworinequityareherebyeliminatedtothefullestextentpermittedundertheDelawareActandanyotherapplicablelaw;provided,that(a)theforegoingshallnoteliminatetheobligationofeachCoveredPersontoactincompliancewiththeexpresstermsofthisAgreementand(b)theforegoingshallnotbedeemedtoeliminatetheimpliedcontractualcovenantofgoodfaithandfairdealing.ACoveredPersonactingunderthisAgreementshallnotbeliabletotheCompanyortoanyotherCoveredPersonforitsgoodfaithrelianceontheprovisionsofthisAgreement.NotwithstandinganythingtothecontrarycontainedinthisAgreement,eachoftheMembersherebyacknowledgesandagreesthattheManagingMember,indeterminingwhetherornottomakeanyparticulardecisionforwhichtheManagingMember’sconsentisrequired,mayactinandconsiderthebestinterestsofitselfanditsAffiliatesandshallnotberequiredtoactinorconsiderthebestinterestsoftheCompany,anyofitsSubsidiariesortheotherMembers.

Section11.4Indemnification.Tothefullestextentpermittedbyapplicablelaw,aCoveredPersonshallbeentitledtoindemnificationfromtheCompanyforanyloss,damageorclaimincurredbysuchCoveredPersonbyreasonofanyactoromissionperformedoromittedbysuchCoveredPersoningoodfaithandreasonablybelievedtobein,ornotopposedto,thebestinterestsoftheCompany.THISINDEMNITYSHALLAPPLYTOMATTERSTHATARISEOUTOFTHENEGLIGENCE,STRICTLIABILITYOROTHERFAULTORRESPONSIBILITYOFANYSUCHCOVEREDPERSON;PROVIDED,HOWEVER,thatnoCoveredPersonshallbeentitledtobeindemnifiedinrespectofanyloss,damageorclaimincurredbysuchCoveredPersonbyreasonofsuchCoveredPerson’sgrossnegligence,willfulmisconductorwillfulbreachofthisAgreementwithrespecttosuchactsoromissions.AnyindemnityunderthisSection11.4shallbeprovidedoutofandtotheextentofCompanyassetsonly,andnoCoveredPersonshallhaveanypersonalliabilityonaccountthereof.

Section11.5Expenses.Tothefullestextentpermittedbyapplicablelaw,expenses(includingreasonableattorneys’fees,disbursements,finesandamountspaidinsettlement)incurredbyaCoveredPersonindefendinganyclaim,demand,action,suitorproceedingrelatingtoorarisingoutofitsperformanceofitsdutiesonbehalfoftheCompanyshall,fromtimetotime,beadvancedbytheCompanypriortothefinaldispositionofsuchclaim,demand,action,suitorproceedinguponreceiptbytheCompanyofanundertakingbyoronbehalfoftheCoveredPersontorepaysuchamountifitshallultimatelybedeterminedbyacourtofcompetentjurisdictionthattheCoveredPersonisnotentitledtobeindemnifiedasauthorizedinSection11.4.

Section11.6Nonexclusivity;Severability.TheexculpationandindemnificationprovisionssetforthinthisAgreementshallnotbedeemedtobeexclusiveandshallbeinadditiontoanysuchrightsprovidedbycontract,agreementororganizationaldocumentofanySubsidiarytowhichanyCoveredPersonmaybeentitled.Tothefullestextentpermittedbyapplicablelaw,ifanyportionofthisArticleXIshallbeinvalidatedonanygroundbyanycourtofcompetentjurisdiction,thentheCompanyshallneverthelessindemnifytheManagingMemberandeachOfficer,asapplicable,andmayindemnifyeachemployeeoragent,asapplicable,oftheCompanyastocosts,chargesandexpenses(includingreasonableattorneys’fees),judgments,finesandamountspaidinsettlementwithrespecttoanyaction,suitorproceeding,whethercivil,criminal,administrativeorinvestigative,includinganactionbyorintherightoftheCompany,tothefullestextentpermittedbyanyapplicableportionofthisArticleXIthatshallnothavebeeninvalidated.

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ARTICLEXII.TRANSFERSOFUNITS

Section12.1RestrictionsonTransfersofUnits.

(a)Generally.ExceptpursuanttotheproceduresdescribedinthisArticleXII,aMembershallnot,inanytransactionorseriesoftransactions,directlyorindirectly,TransferalloranyofitsUnits.AnyattemptbyaMembertoTransfer,directlyorindirectly,alloranyofitsUnitsinviolationofthisAgreementshallbevoidabinitioandwillnotbeaneffectiveTransferofsuchUnits.

(b)NoIndirectTransfer.Withoutlimitingthegeneralityoftheforegoing,thestock,limitedliabilitycompanyinterests,partnershipinterestsorotherequitysecuritiesofanyNon-ManagingMembermaynotbeTransferredbytheholdersthereof,andthereshallbenochangeofControlofanyNon-ManagingMember,ineachcasewithoutwrittenapprovaloftheManagingMember,whichapprovalmaybewithheldorconditioned(includinguponmodificationofthetermsofanyUnits)initssolediscretion.

Section12.2PermittedTransfers.NotwithstandingtheforegoingrestrictionsonTransfers:

(a)TheManagingMembermayTransfer,withoutbeingsubjecttoSection12.3(otherthanclause(c)(iii)thereof),alloranyofitsUnitstoanAffiliateatanytime;

(b)anyMembermayTransfer,withoutbeingsubjecttoSection12.3(otherthanclause(c)(iii)thereof),alloranyofitsUnitspursuanttoapledgeorsecurityagreementinfavorofthecollateralagentforthesecuredpartiesunderanyFinancingAgreementTransactionDocuments;and

(c)anyNon-ManagingMembermayTransfer,withoutbeingsubjecttoSection12.3(otherthanclause(c)(iii)thereof),alloranyofitsUnitswiththepriorwrittenapprovaloftheManagingMember,whichapprovalmaybewithheldorconditioned(includinguponmodificationofthetermsofanyUnits)initssolediscretion.

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Section12.3OverridingProvisions.

(a)TheapprovalofanyTransferinanyoneormoreinstancesshallnotlimitorwaivetherequirementforsuchapprovalinanyotherorfutureinstance.

(b)ExceptasprovidedinSection12.2,allTransferspermittedunderthisArticleXIIaresubjecttothisSection12.3,Section12.4andSection12.5.

(c)AnyproposedTransferbyaMemberpursuanttothetermsofthisArticleXIIshall,inadditiontomeetingapplicablerequirementsofthisAgreement,satisfythefollowingconditions:

(i)theTransferwillnotbeeffectedonorthroughan“establishedsecuritiesmarket”ora“secondarymarketorthesubstantialequivalentthereof,”assuchtermsareusedinTreasuryRegulationsSection1.7704-1,and,attherequestoftheManagingMember,thetransferorandthetransfereewillhaveeachprovidedtheCompanyacertificatetosucheffect;

(ii)theproposedTransferwillnotresultintheCompanyhavingmorethan100Members,withinthemeaningofTreasuryRegulationsSection1.77041(h)(1)(determinedpursuanttotherulesofTreasuryRegulationsSection1.77041(h)(3))orotherwisecausetheCompanytobetreatedasa“publiclytradedpartnership”withinthemeaningofSection7704oftheCode;and

(iii)theproposedTransferwillbemadeinaccordancewithallapplicablelawsandregulations,allnecessarygovernmentalconsentsshallhavebeenobtainedandrequirementssatisfied,includingcompliancewithU.S.federalandstatesecuritieslaws,andtheTransferwillnotcausetheCompanytobreachorviolateanyapplicablelaworthetermsandconditionsofanyFinancingAgreementTransactionDocuments.

TheManagingMembermayrequestanopinionoflegalcounselorotherevidencereasonablysatisfactorytotheManagingMemberwithrespecttoanyoftheforegoingprovisionsofthisSection12.3oranyothermattersthattheManagingMemberreasonablydeemsappropriateinrespectofanysuchproposedTransfer.TheManagingMembermaywaiveanyoftheforegoingprovisionsexceptasotherwiserequiredbyapplicablelaw.

(d)TheMembers’CapitalAccountbalancesshallpromptlybeamendedtoreflectanypermittedtransfersofUnitspursuanttothisArticleXIIinthemannersetforthinSection7.7.

Section12.4ReleaseofLiability.IntheeventthatanyMemberTransfersallofsuchMember’sUnitsintheCompanyincompliancewiththeprovisionsofthisAgreement,withoutretaininganyinteresttherein,directlyorindirectly,thenthetransferorshall,tothefullestextentpermittedbyapplicablelaw,berelievedofanyfurtherliabilityarisinghereunderforeventsoccurringfromandafterthedateofsuchTransfer.

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Section12.5SubstituteMembers.

(a)IntheeventaMemberTransfersitsUnitsincompliancewiththeapplicableprovisionsofthisArticleXII,thetransfereethereofshallbecomeaMemberinsubstitutionofthetransferorinrespectoftheUnitssotransferred,withalloftherightsandlimitationsattendanttothetransferor’sUnitsandOwnershipPercentagejustasifsuchtransfereewereaMemberhereunder,uponsatisfactionofthefollowing:

(i)thetransfereepaysorreimbursestheCompanyforanyreasonablelegal,filingandpublicationcoststhattheCompanyincursinconnectionwiththeadmissionofthetransfereeasaMember;

(ii)anyandallnecessarygovernmentalconsentshavebeenobtained;and

(iii)acceptanceandagreementinwritingbythetransfereeoftheMember’sUnitstobeboundbyallofthetermsandprovisionsofthisAgreementandassumptionofallobligationsunderthisAgreementapplicabletothetransferor.

(b)Notwithstandinganythinghereintothecontrary,theCompanyshallbeentitledtotreatthetransferorofUnitsastheabsoluteownerthereofinallrespectsandshallincurnoliabilityfordistributionsofcashorotherpropertymadeingoodfaithtoit,untilsuchtimeasawrittenassignmentorotherevidenceoftheconsummationofaTransferthatconformstotherequirementsofthisArticleXIIandisreasonablysatisfactorytotheManagingMemberhasbeenreceivedbytheCompany.TheeffectivedateofanyTransferpermittedunderthisAgreementshallbethecloseofbusinessonthedayofreceiptthereofbytheCompany.

Section12.6Resignation.NoMembermayresignfromtheCompany,otherthanasaresultofaTransferofallofsuchMember’sUnitseffectedinaccordancewiththetermsofthisAgreement.

ARTICLEXIII.DISSOLUTION,LIQUIDATIONANDTERMINATION

Section13.1DissolvingEvents.TheCompanyshallbedissolvedanditsaffairswoundupinthemannerhereinafterprovideduponthehappeningofanyofthefollowingevents:

(a)theMembersvoteoragreeinwritingtodissolvetheCompany;

(b)anyeventwhichunderapplicablelawwouldcausethedissolutionoftheCompany;provided,thatunlessrequiredbylaw,theCompanyshallnotbewoundupasaresultofanysucheventandthebusinessoftheCompanyshallcontinue.

Notwithstandingtheforegoing,thedeath,retirement,resignation,expulsion,bankruptcyordissolutionofanyMemberortheoccurrenceofanyothereventthatterminatesthecontinuedmembershipofanyMemberintheCompanyundertheDelawareActshallnot,inandofitself,causethedissolutionoftheCompany.Insuchevent,theremainingMember(s)shallcontinuethebusinessoftheCompanywithoutdissolution.

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Section13.2Liquidation.UponthedissolutionoftheCompany,unlessanelectiontocontinuetheCompanyismadepursuanttoSection13.1,thebusinessandaffairsoftheCompanyshallbewoundup,andtheManagingMember(oritsdesignee)willserveasliquidator(the“Liquidator”)oftheCompany.

(a)ExceptasexpresslyprovidedinthisArticleXIII,theLiquidatorwillhaveandmayexercise,withoutfurtherauthorizationorconsentofanyofthepartieshereto,allofthepowersconferredupontheManagingMemberandtheMembersunderthetermsofthisAgreement,totheextentnecessaryordesirableinthegoodfaithjudgmentoftheLiquidatortocarryoutthedutiesandfunctionsoftheLiquidatorhereunderforandduringsuchperiodoftimeaswillberequiredinthegoodfaithjudgmentoftheLiquidatortocompletethewindingupandliquidationoftheCompanyasprovidedforherein.

(b)ExceptasotherwiseprovidedinthisArticleXIII(includingSection13.4below),theLiquidatorwillliquidatetheassetsoftheCompanyandapplyanddistributethenetproceedsofsuchliquidationinthefollowingmannerandorder:

(i)first,netproceedsoftheliquidationwillbeappliedanddistributedtocreditorsinsatisfactionofindebtedness(otherthananyloansoradvancesthatmayhavebeenmadebyanyoftheMemberstotheCompany),whetherbypaymentorplacinginescrowareserveofcashorotherassetsoftheCompanyforthepaymentofcreditors,certainadministrativeexpenses(includingpaymentoftheexpensesoftheterminatingtransactionssuchasbrokeragecommissions,legalfees,accountingfeesandclosingcosts)andcontingentliabilitiesinanamountreasonablydeterminedbytheLiquidatortobeappropriateforsuchpurposes;and

(ii)second,netproceedsoftheliquidationwillbeappliedtothepaymentofoutstandingloansthatmayhavebeenmadebyanyoftheMemberstotheCompany;and

(iii)third,remainingnetproceedsoftheliquidationshallbedistributedtoMembersinaccordancewithSection9.1.

provided,thatnopaymentordistributioninanyoftheforegoingcategoriesshallbemadeuntilallpaymentsineachpriorcategoryshallhavebeenmadeinfull;provided,further,thatifthepaymentsduetobemadeinanyoftheforegoingcategoriesexceedtheremainingproceedsavailableforsuchpurpose,suchpaymentsshallbemadetothePersonsentitledtoreceivethesameproratainaccordancewiththerespectiveamountsduetothem.

Section13.3Reserves.AfteralloftheassetsoftheCompanyhavebeendistributed,theCompanywillterminateinaccordancewithSection13.5.IfatanytimethereafteranyfundsinanycashreservefundreferredtoinSection13.2(b)arereleasedbecausetheneedforsuchcashreservefundhasended,suchfundswillbedistributedtotheMembersinthesamemannerasifsuchdistributionhadbeenmadepursuanttoSection13.2(b).

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Section13.4DistributionInKind.NotwithstandingtheprovisionsofSection13.2thatrequiretheliquidationoftheassetsoftheCompany,if,uponthedissolutionoftheCompany,theLiquidatordeterminesthatanimmediatesaleofpartoralloftheCompany’sassetswouldbeimpracticalorwouldcauseunduelosstotheMembers,theLiquidatormay,ingoodfaith,deferforatimetheliquidationofanyassetsexceptthosenecessarytosatisfyliabilitiesoftheCompany(otherthantheCompany’sliabilitiestoitsMembers).TheLiquidatormaydistributetotheMembers,inlieuofcash,suchCompanyassetsastheLiquidatordeemsnotsuitableforliquidation.AnydistributionsinkindwillbesubjecttosuchconditionsrelatingtothedispositionandmanagementthereofastheLiquidatorreasonablydeemsequitable.Furthermore,totheextentthatthereisadistributionofCompanypropertypursuanttoSection13.2inaccordancewiththisSection13.4,theratioofcashtonon-cashdistributionsshallbeidenticalforeachMember,unlessanyMemberelects,initssolediscretion,totakeagreaterportionofitsdistributioninnon-cashCompanyproperty.TheLiquidatorwillvalueanypropertydistributedinkindbaseduponsuchproperty’sfairmarketvalueasdeterminedusingsuchmethodofvaluationastheLiquidatorandtheMembersreceivinganysuchin-kinddistributionagreeupon.

Section13.5Termination.TheCompanyshallterminatewhenthewindingupoftheCompany’saffairshasbeencompleted,alloftheassetsoftheCompanyhavebeendistributedandtheCertificatehasbeencanceled,allinaccordancewiththeDelawareAct.

Section13.6ClaimsoftheMembers.TheMembersandformerMembersshalllooksolelytotheCompany’sassetsforthereturnoftheirCapitalContributions,andiftheassetsoftheCompanyremainingafterpaymentofordueprovisionforalldebts,liabilitiesandobligationsoftheCompanyareinsufficienttoreturnsuchCapitalContributions,theMembersandformerMembersshallhavenorecourseagainsttheCompanyoranyotherMember.

ARTICLEXIV.MISCELLANEOUS

Section14.1Notices.Allnotices,requests,demands,waiversandothercommunicationsrequiredorpermittedtobegivenunderthisAgreementshallbeinwritingandmaybegivenbyanyofthefollowingmethods:(a)personaldelivery,(b)facsimiletransmission,(c)registeredorcertifiedmail,postageprepaid,returnreceiptrequested,or(d)nextdaycourierservice.Noticesshallbesenttotheappropriatepartyathis,heroritsaddress,emailorfacsimilenumbergivenbelow(oratsuchotheraddress,emailorfacsimilenumberforsuchpartyasshallbespecifiedbynoticegivenhereunder).

IftotheManagingMember:

3CMHoldings,LLCc/oArcLightCapitalPartners,LLC200ClarendonStreet,55thFloorBoston,MA02117

Attention:Fax:Email:

TedBurke(617)867-4698tburke@arclightcapital.com

withacopy(whichshallnotconstitutenotice)to:

Kirkland&EllisLLP609MainStreet,47thFloorHouston,Texas77002

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Attention:Fax:Email:

DouglasBacon,P.C.;KimHicks(713)835-3601douglas.bacon@kirkland.com;kim.hicks@kirkland.com

IftoanyotherMember,tohis,heroritsaddress,emailorfacsimilenumbergivenonsuchMember’ssignaturepagetothisAgreement.

Allsuchnotices,requests,demands,waiversandcommunicationsshallbedeemedeffectiveupon(x)actualreceiptthereofbytheaddressee,(y)actualdeliverythereoftotheappropriatephysicalmailingoremailaddress,asapplicable,or(z)inthecaseofafacsimiletransmission,transmissionthereofbythesenderandissuancebythetransmittingmachineofaconfirmationthatthenoticehasbeentransmittedwithouterror.Thepartieswillhavetherightfromtimetotimeandatanytimetochangetheirrespectiveaddresses,andeachwillhavetherighttospecifyasitsaddressanyotheraddressbywrittennoticetotheotherparties.Eachpartywillhavetherightfromtimetotimetospecifyadditionalparties(nottoexceedtwoadditionalparties)towhomnoticehereundermustbegivenbydeliveringtotheotherpartywrittennoticethereof,settingforththeaddressofsuchadditionalparties.Noticerequiredtobedeliveredhereundertoanypartywillnotbedeemedtobeeffectiveuntiltheadditionalparties,ifany,designatedbysuchpartyhavebeengivennoticeinamannerdeemedeffectivepursuanttothetermsofthisSection14.1.

Section14.2Headings.TheheadingscontainedinthisAgreementareforpurposesofconvenienceonlyandshallnotaffectthemeaningorinterpretationofthisAgreement.

Section14.3EntireAgreement.ThisAgreementconstitutestheentireagreementamongtheMemberswithrespecttothesubjectmatterhereofandsupersedesanyprioragreementorunderstandingamonganyofthemwithrespecttosuchsubjectmatter,including,fromandaftertheEffectiveDateonly,theFourthAmendedandRestatedAgreement.

Section14.4Construction.Wheneverthecontextrequires,thegenderofallwordsusedinthisAgreementincludesthemasculine,feminineandneuter.Termsdefinedinthesingularhavethecorrespondingmeaningsinthepluralandviceversa.HeadingsareincludedforconvenienceonlyandshallnotbeconsideredininterpretingthisAgreement.AllreferencestoSectionsrefertosectionsofthisAgreement,andallreferencestoAppendices,ExhibitsandSchedulesrefertoappendices,exhibitsandschedulestothisAgreement,whichareattachedheretoandmadeaparthereofforallpurposes.Theword“including”means“including,butnotlimitedto.”Thewords“hereof,”“hereby,”“herein,”“hereunder”andsimilartermsinthisAgreementshallrefertothisAgreementasawholeandnotanyparticularsectionorarticleinwhichsuchwordsappear.WheneverthisAgreementreferstoanumberofdays,suchnumbershallrefertocalendardaysunlessotherwisespecified.TheMembershaveeachfullyparticipatedinthenegotiationanddraftingofthisAgreement.Ifanambiguity,questionofintentorquestionofinterpretationarises,thisAgreementmustbeconstruedasifdraftedjointly,andtheremustnotbeanypresumption,inferenceorconclusiondrawnagainsteitherMemberbyvirtueofthefactthatitsRepresentativeshaveauthoredthisAgreementoranyofitsterms.

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Section14.5Counterparts.ThisAgreementmaybeexecutedinseveralcounterparts,eachofwhichshallbedeemedanoriginalandallofwhichshalltogetherconstituteoneandthesameinstrument.

Section14.6GoverningLaw.Thevalidity,construction,interpretationandeffectofthisAgreementshallbegovernedbyandinterpretedinaccordancewiththelawsoftheStateofDelaware,withoutregardtoconflictsruleswhichwouldotherwiseapplythelawsofanotherjurisdiction.

Section14.7Jurisdiction;ConsenttoServiceofProcess;Waiver.EachMemberagreesthatitshallbringanyactionorproceedinginrespectofanyclaimarisingoutoforrelatedtothisAgreement,whetherintortorcontractoratlaworinequity,exclusivelyinanyU.S.federalorstatecourtintheStateofDelawareand(a)irrevocablysubmitstothejurisdictionofsuchcourts,(b)waivesanyobjectiontolayingvenueinanysuchactionorproceedinginsuchcourts,(c)waivesanyobjectionthatsuchcourtsareaninconvenientforumordonothavejurisdictionoveritand(d)agreesthatserviceofprocessuponitmaybeeffectedbymailingacopythereofpostageprepaid,registeredorcertifiedwithreturnreceiptrequestedattheaddressspecifiedinSection14.1.TheforegoingconsentstojurisdictionandserviceofprocessshallnotconstitutegeneralconsentstoserviceofprocessintheStateofDelawareforanypurposeexceptasprovidedhereinandshallnotbedeemedtoconferrightsonanyPersonotherthantheMembers.

Section14.8WaiverofJuryTrial.EachMemberherebyknowinglyandintentionally,irrevocablyandunconditionallywaivestrialbyjuryinanylegalactionorproceedingunder,arisingoutoforinconnectionwiththisAgreementandforanycounterclaimtherein.

Section14.9WaiverGenerally.WaiverbytheManagingMemberoranyotherMemberofanybreachordefaultbyanyotherMemberofanyofthetermsofthisAgreementshallnotoperateasawaiverofanyotherbreachordefault,whethersimilartoordifferentfromthebreachordefaultwaived.NowaiverofanyprovisionofthisAgreementshallbeimpliedfromanycourseofdealingbetweentheManagingMemberandanyotherMemberorotherwisebetweentheMembersheretoorfromanyfailurebytheManagingMemberoranyotherMembertoassertits,hisorherrightshereunderonanyoccasionorseriesofoccasions.Nosingleorpartialexerciseofanyright,remedy,powerorprivilegehereundershallprecludeanyotherorfurtherexercisethereofortheexerciseofanyotherright,remedy,powerorprivilege.Therights,remedies,powersandprivilegeshereinprovidedarecumulativeandnotexclusiveofanyrights,remedies,powersandprivilegesprovidedbyapplicablelawnototherwisewaivedherein.

Section14.10Severability.IfanyprovisionofthisAgreementisinoperativeorunenforceableforanyreason,suchcircumstancesshallnothavetheeffectofrenderingtheprovisioninquestioninoperativeorunenforceableinanyothercaseorcircumstanceorofrenderinganyotherprovisionorprovisionshereincontainedinvalid,inoperativeorunenforceabletoanyextentwhatsoeversolongasthisAgreement,takenasawhole,stillexpressesthematerialintentofthepartieshereto.Theinvalidityofanyoneormorephrases,sentences,clauses,sectionsorsubsectionsofthisAgreementshallnotaffecttheremainingportionsofthisAgreement.

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Section14.11Amendments.ThisAgreementandtheCertificatemaybeamendedorrestatedonlybyawritteninstrumentapprovedbytheMembers.TheMembersherebyacknowledgeandagreethattheexecutionofthisAgreementdatedasoftheEffectiveDateamendingandrestatingtheFourthAmendedandRestatedAgreementconstitutestheconsentofalloftheMemberstoamendandrestatetheFourthAmendedandRestatedAgreement.

Section14.12FeesandExpenses.TheCompanyshallpaythereasonableanddocumentedlegal,formation,transactionandrelatedexpensesincurredbytheMembersinconnectionwiththeexecutionanddeliveryofthisAgreement.

Section14.13NoEmploymentAgreement.NothinginthisAgreementshallgiveanyMemberanyrightstoemploymentbytheCompanyoranyofitsSubsidiariesorAffiliates.EachMemberacknowledgesandagreesthatthisAgreementdoesnotconstituteacontractofemployment.

Section14.14NoThird-PartyBeneficiaries.Exceptasotherwiseprovidedherein,thisAgreementisnotintendedtoconferuponanyPerson,exceptforthepartieshereto,anyrightsorremedieshereunder.

[Signaturepagefollows.]

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IN WITNESS WHEREOF ,thepartiesheretohaveexecutedanddeliveredthisAgreementasofthedatefirstabovewritten.

COMPANY :

THIRD COAST MIDSTREAM HOLDINGS, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

MANAGING MEMBER :

3CM HOLDINGS, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

NON-MANAGING MEMBER :

AMID GP HOLDINGS, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

SamenoticedeliveryinformationastheManagingMember.

[SignaturePagetoFifthAmendedandRestatedLimitedLiabilityCompanyAgreementofThirdCoastMidstreamHoldings,LLC]

Exhibit A

UnitsMember Units 3CMHoldings,LLC 920,811.20AMIDGPHoldings,LLC 79,188.80

Total : 1,000,000.00

ExhibitAtoFifthAmendedandRestatedLimitedLiabilityCompanyAgreementofThirdCoastMidstreamHoldings,LLC

Exhibit B

OfficersName OfficeDanielR.Revers PresidentJohnF.Erhard VicePresidentAdamKuhnley VicePresidentJosefM.Alves VicePresidentChristineM.Miller SecretaryTheodoreD.Burke AssistantSecretary

ExhibitBtoFifthAmendedandRestatedLimitedLiabilityCompanyAgreementofThirdCoastMidstreamHoldings,LLC

Exhibit 3.1

Execution Version

SIXTH AMENDED AND RESTATED

AGREEMENT OF LIMITED PARTNERSHIP

OF

AMERICAN MIDSTREAM PARTNERS, LP

DatedasofJuly23,2019

TABLEOFCONTENTS PageARTICLEI.DefinedTerms 2

Section1.1 Definitions 2Section1.2 Construction 5Section1.3 Conflicts 5

ARTICLEII.Organization 5Section2.1 Formation 5Section2.2 Name 6Section2.3 RegisteredOffice;RegisteredAgent;PrincipalOffice;OtherOffices 6Section2.4 PurposeandBusiness 6Section2.5 Powers 6Section2.6 Term 6Section2.7 PartnershipInterests;Certificates 7

ARTICLEIII.PartnersandCapitalContributions 7Section3.1 LimitedPartners 7Section3.2 CapitalContributions 7Section3.3 NoTermination 7Section3.4 TaxClassification 7

ARTICLEIV.Distributions 8Section4.1 Distributions 8

ARTICLEV.Management 8Section5.1 Management 8Section5.2 ReimbursementoftheGeneralPartner 8

ARTICLEVI.LimitationsonLiabilityandIndemnity 9Section6.1 LimitationonLiability 9Section6.2 Indemnification 10Section6.3 LiabilityofIndemnitees 11

ARTICLEVII.Transferability 12Section7.1 TransfersofPartnershipInterests 12

ARTICLEVIII.DissolutionandLiquidation 12Section8.1 Dissolution 12Section8.2 EffectofDissolution 12Section8.3 WindingUp,LiquidationandDistributionofAssets 12Section8.4 CertificateofCancellation 12

ARTICLEIX.Miscellaneous 13Section9.1 Amendments 13

i

Section9.2 Successors 13Section9.3 NoThirdPartyBeneficiaries 13Section9.4 GoverningLaw;Severability 13Section9.5 Notices 13Section9.6 Counterparts 13

ii

THEPARTNERSHIPINTERESTSDESCRIBEDINTHISSIXTHAMENDEDANDRESTATEDAGREEMENTOFLIMITEDPARTNERSHIPHAVENOTBEENREGISTEREDUNDERTHESECURITIESACTOF1933,ASAMENDED,ORUNDERANYSTATESECURITIESACTSINRELIANCEUPONEXEMPTIONSUNDERTHOSEACTS.THESALEOROTHERDISPOSITIONOFSUCHPARTNERSHIPINTERESTSISPROHIBITEDUNLESSSUCHSALEORDISPOSITIONISMADEINCOMPLIANCEWITHALLSUCHAPPLICABLEACTS.ADDITIONALRESTRICTIONSONTRANSFEROFSUCHPARTNERSHIPINTERESTSARESETFORTHINTHISAGREEMENT.

SIXTH AMENDED AND RESTATEDAGREEMENT OF LIMITED PARTNERSHIP

OFAMERICAN MIDSTREAM PARTNERS, LP

ThisSixthAmendedandRestatedAgreementofLimitedPartnershipofAmericanMidstreamPartners,LP(the“Partnership”),datedasofJuly23,2019(the“EffectiveDate”),isenteredintobyandbetweenAmericanMidstreamGP,LLC,aDelawarelimitedliabilitycompany(the“GeneralPartner”),asthegeneralpartnerofthePartnership,andAnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany(“AnchorAcquisition”),asthesolelimitedpartnerofthePartnership.

WITNESSETH

WHEREAS,onAugust20,2009,thePartnershipwasformeduponthefilingoftheCertificateofLimitedPartnership(includinganyandallamendmentsandmodificationstheretoandrestatementsthereof,the“Certificate”)withtheSecretaryofStateoftheStateofDelaware;

WHEREAS,theGeneralPartnerandthethen-LimitedPartnersenteredintothatcertainFifthAmendedandRestatedAgreementofLimitedPartnershipdatedasofApril25,2016,asamendedfromtimetotimethereafter(asamended,the“FifthA/RPartnershipAgreement”);

WHEREAS,onMarch17,2019,thePartnership,theGeneralPartner,HighPointInfrastructurePartners,LLC,aDelawarelimitedliabilitycompanyandpredecessor-in-interestto3CMHoldings,LLC,AnchorAcquisitionandAnchorMidstreamMergerSub,LLC,aDelawarelimitedliabilitycompany(“MergerSub”),enteredintothatcertainAgreementandPlanofMerger(the“AMIDMergerAgreement”)pursuanttowhich,ontheEffectiveDate,MergerSubmergedwithandintothePartnershipwiththePartnershipsurvivingthemergerasawhollyownedsubsidiaryoftheGeneralPartnerandAnchorAcquisition(the“AMIDMerger”);

WHEREAS,pursuanttoSection2.5oftheAMIDMergerAgreement,theFifthA/RPartnershipAgreementisrequiredtobeamendedandrestatedattheEffectiveTime(asdefinedintheAMIDMergerAgreement)and,soamendedandrestated,shallbetheagreementoflimitedpartnershipofthePartnership,astheSurvivingEntity;and

WHEREAS,inconnectionwiththeAMIDMerger,theGeneralPartnerandAnchorAcquisitiondesiretoamendandrestatetheFifthA/RPartnershipAgreementinitsentiretytoprovidefortheconductofthebusinessandaffairsofthePartnershipandcertainrelationsamongthePartnersinaccordancewiththetermsandconditionsofthisAgreement,asitmaybeamendedfromtimetotime.

NOW,THEREFORE,inconsiderationofthepremisesandmutualagreementscontainedherein,andothergoodandvaluableconsideration,thereceiptandsufficiencyofwhichareherebyacknowledged,thePartnersherebyagreeasfollows:

ARTICLEI.DEFINEDTERMS

Section1.1Definitions.

“Affiliate”means,withrespecttoanyPerson,anyotherPersonthatdirectlyorindirectlythroughoneormoreintermediariescontrols,iscontrolledbyorisundercommoncontrolwith,thePersoninquestion.Asusedherein,theterm“control”meansthepossession,directorindirect,ofthepowertodirectorcausethedirectionofthemanagementandpoliciesofaPerson,whetherthroughownershipofvotingsecurities,bycontractorotherwise.

“Agreement”meansthisSixthAmendedandRestatedAgreementofLimitedPartnershipofthePartnership,asthisagreementmayberevised,amended,restatedorsupplementedfromtimetotimeaftertheEffectiveDate.

“AMIDMerger”shallhavethemeaningsetforthintherecitalstothisAgreement.

“AMIDMergerAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“AnchorAcquisition”shallhavethemeaningsetforthintherecitalstothisAgreement.

“AvailableCash”means,withrespecttoanyQuarterendingpriortothedissolutionofthePartnershippursuanttoARTICLEVIII:

(a)thesumof(i)allcashandcashequivalentsofthePartnershipGroup(orthePartnership’sproportionateshareofcashandcashequivalentsinthecaseofSubsidiariesthatarenotwhollyowned)onhandattheendofsuchQuarter,and(ii)iftheGeneralPartnersodetermines,alloranyportionofadditionalcashandcashequivalentsofthePartnershipGroup(orthePartnership’sproportionateshareofcashandcashequivalentsinthecaseofSubsidiariesthatarenotwhollyowned)onhandonthedateofdeterminationofAvailableCashwithrespecttosuchQuarterresultingfromWorkingCapitalBorrowingsmadesubsequenttotheendofsuchQuarter;less

(b)theamountofanycashreserves(orthePartnership’sproportionateshareofcashreservesinthecaseofSubsidiariesthatarenotwhollyowned)establishedbytheGeneralPartnerto(i)providefortheproperconductofthebusinessofthePartnershipGroup(includingreservesforfuturecapitalexpenditures,foranticipatedfuturecreditneedsofthePartnershipGroupandforrefundsofcollectedratesreasonablylikelytoberefundedasaresultofasettlementorhearingrelatedtoFERCrateproceedingsorrateproceedingsunderapplicablestatelaw,ifany)

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subsequenttosuchQuarter,(ii)complywithapplicablelaworanyloanagreement,securityagreement,mortgage,debtinstrumentorotheragreementorobligationtowhichanyGroupMemberisapartyorbywhichitisboundoritsassetsaresubjector(iii)providefundsfordistributionsunderSection4.1inrespectofanyoneormoreofthenextfourQuarters;

provided,however,thatdisbursementsmadebyaGroupMemberorcashreservesestablished,increasedorreducedaftertheendofsuchQuarterbutonorbeforethedateofdeterminationofAvailableCashwithrespecttosuchQuartershallbedeemedtohavebeenmade,established,increasedorreduced,forpurposesofdeterminingAvailableCash,withinsuchQuarteriftheGeneralPartnersodetermines.

Notwithstandingtheforegoing,“AvailableCash”withrespecttotheQuarterinwhichthedissolutionofthePartnershipoccurspursuanttoARTICLEVIIIandanysubsequentQuartershallequalzero.

“Certificate”shallhavethemeaningsetforthinthepreambletothisAgreement.

“CommonUnits”meansaPartnershipInterestrepresentingafractionalpartofthePartnershipInterestsofallLimitedPartners,andhavingtherightsandobligationsspecifiedwithrespecttoCommonUnitsinthisAgreement.

“DelawareAct”shallhavethemeaningsetforthinSection2.1.

“DepartingGeneralPartner”meansaformergeneralpartnerfromandaftertheeffectivedateofanywithdrawalorremovalofsuchformergeneral.

“EffectiveDate”shallhavethemeaningsetforthinthepreambletothisAgreement.

“EffectiveTime”shallhavethemeaningsetforthintheAMIDMergerAgreement.

“FERC”meanstheFederalEnergyRegulatoryCommissionorsuccessortopowersthereof.

“FifthA/RPartnershipAgreement”shallhavethemeaningsetforthintherecitalstothisAgreement.

“GeneralPartner”shallhavethemeaningsetforthinthepreambletothisAgreement.

“GeneralPartnerInterest”meanstheownershipinterestoftheGeneralPartnerinthePartnership(initscapacityasageneralpartnerwithoutreferencetoanyLimitedPartnerInterestheldbyit)andincludesanyandallbenefitstowhichtheGeneralPartnerisentitledasprovidedinthisAgreement,togetherwithallobligationsoftheGeneralPartnertocomplywiththetermsandprovisionsofthisAgreement.

“GroupMember”meansamemberofthePartnershipGroup.

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“Indemnitee”means(a)theGeneralPartner,(b)anyDepartingGeneralPartner,(c)anyPersonwhoisorwasanAffiliateoftheGeneralPartneroranyDepartingGeneralPartner,(d)anyPersonwhoisorwasamanager,managingmember,generalpartner,director,officer,employee,agent,fiduciaryortrusteeofanyGroupMember,theGeneralPartneroranyDepartingGeneralPartneroranyAffiliateofanyGroupMember,theGeneralPartneroranyDepartingGeneralPartner,(e)anyPersonwhoisorwasservingattherequestoftheGeneralPartneroranyDepartingGeneralPartneroranyAffiliateoftheGeneralPartneroranyDepartingGeneralPartnerasamanager,managingmember,generalpartner,director,officer,employee,agent,fiduciaryortrusteeofanotherPersonowingafiduciarydutytoanyGroupMember;providedthataPersonshallnotbeanIndemniteebyreasonofproviding,onafee-for-servicesbasis,trustee,fiduciaryorcustodialservices,(f)anyPersonwhocontrolsaGeneralPartneroranyDepartingGeneralPartnerand(g)anyPersontheGeneralPartnerdesignatesasanIndemniteeforpurposesofthisAgreement.

“LimitedPartner”means,unlessthecontextotherwiserequires,anylimitedpartnerofthePartnership,insuchPerson’scapacityasalimitedpartner.

“LimitedPartnerInterest”meanstheownershipinterestofaLimitedPartnerinthePartnership,whichmaybeevidencedbyCommonUnitsorotherPartnershipInterestsoracombinationthereoforinteresttherein,andincludesanyandallbenefitstowhichsuchLimitedPartnerisentitledasprovidedinthisAgreement,togetherwithallobligationsofsuchLimitedPartnertocomplywiththetermsandprovisionsofthisAgreement.

“MergerSub”shallhavethemeaningsetforthintherecitalstothisAgreement.

“Partners”meanstheGeneralPartnerandtheLimitedPartners.

“Partnership”shallhavethemeaningsetforthinthepreambletothisAgreement.

“PartnershipGroup”meanscollectivelythePartnershipanditsSubsidiaries.

“PartnershipInterest”meansanyclassorseriesofequityinterestinthePartnership,whichshallincludeanyGeneralPartnerInterestandLimitedPartnerInterestsbutshallexcludeanyoptions,rights,warrantsandappreciationrightsrelatingtoanequityinterestinthePartnership.

“Person”meansanindividualoracorporation,firm,limitedliabilitycompany,partnership,jointventure,trust,unincorporatedorganization,association,governmentagencyorpoliticalsubdivisionthereoforotherentity.

“Quarter”means,unlessthecontextrequiresotherwise,afiscalquarterofthePartnership,or,withrespecttothefirstfiscalquarterofthePartnershipafterthedatehereof,theportionofsuchfiscalquarterafterthedatehereof.

“Subsidiary”means,withrespecttoanyPerson,(a)acorporationofwhichmorethan50%ofthevotingpowerofsharesentitled(withoutregardtotheoccurrenceofanycontingency)tovoteintheelectionofdirectorsorothergoverningbodyofsuchcorporationisowned,directlyorindirectly,atthedateofdetermination,bysuchPerson,byoneormoreSubsidiariesofsuchPersonoracombinationthereof,(b)apartnership(whethergeneralorlimited)inwhichsuchPersonoraSubsidiaryofsuchPersonis,atthedateofdetermination,ageneralorlimitedpartnerofsuchpartnership,butonlyifmorethan50%ofthepartnershipinterestsofsuchpartnership(considering

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allofthepartnershipinterestsofthepartnershipasasingleclass)isowned,directlyorindirectly,atthedateofdetermination,bysuchPerson,byoneormoreSubsidiariesofsuchPerson,oracombinationthereof,or(c)anyotherPerson(otherthanacorporationorapartnership)inwhichsuchPerson,oneormoreSubsidiariesofsuchPerson,oracombinationthereof,directlyorindirectly,atthedateofdetermination,has(i)atleastamajorityownershipinterestor(ii)thepowertoelectordirecttheelectionofamajorityofthedirectorsorothergoverningbodyofsuchPerson.

“SurvivingEntity”shallhavethemeaningsetforthintheAMIDMergerAgreement.

“UnitMajority”meansatleastamajorityoftheoutstandingCommonUnits.

“WorkingCapitalBorrowings”meansborrowingsusedsolelyforworkingcapitalpurposesortopaydistributionstoPartnersmadepursuanttoacreditfacility,commercialpaperfacilityorothersimilarfinancingarrangements,providedthatwhensuchborrowingsareincurreditistheintentoftheborrowertorepaysuchborrowingswithin12monthsotherthanfromadditionalWorkingCapitalBorrowings.

Section1.2Construction.Unlessthecontextrequiresotherwise:(a)anypronounusedinthisAgreementshallincludethecorrespondingmasculine,feminineorneuterforms,andthesingularformofnouns,pronounsandverbsshallincludethepluralandviceversa;(b)referencestoArticlesandSectionsrefertoArticlesandSectionsofthisAgreement;(c)theterms“include,”“includes,”“including”orwordsoflikeimportshallbedeemedtobefollowedbythewords“withoutlimitation”;and(d)theterms“hereof,”“herein”or“hereunder”refertothisAgreementasawholeandnottoanyparticularprovisionofthisAgreement.ThetableofcontentsandheadingscontainedinthisAgreementareforreferencepurposesonly,andshallnotaffectinanywaythemeaningorinterpretationofthisAgreement.

Section1.3Conflicts.IntheeventofadirectconflictbetweentheprovisionsofthisAgreementandthemandatoryprovisionsoftheDelawareActoranyprovisionoftheCertificate,theDelawareActandtheCertificate,inthatorderofpriority,shallcontrol.

ARTICLEII.ORGANIZATION

Section2.1Formation.ThePartnershipwasformedasalimitedpartnershippursuanttotheprovisionsoftheDelawareRevisedUniformLimitedPartnershipAct,asamendedfromtimetotime(the“DelawareAct”).ThePartnersherebyamendandrestatetheFifthA/RPartnershipAgreementinitsentirety.ThisamendmentandrestatementshallbecomeeffectiveonthedateofthisAgreement.ExceptasexpresslyprovidedtothecontraryinthisAgreement,therights,duties(includingfiduciaryduties),liabilitiesandobligationsofthePartnersandtheadministration,dissolutionandterminationofthePartnershipshallbegovernedbytheDelawareAct.AllPartnershipInterestsshallconstitutepersonalpropertyoftheownerthereofforallpurposes.

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Section2.2Name.ThenameofthePartnershipshallbe“AmericanMidstreamPartners,LP.”ThePartnership’sbusinessmaybeconductedunderanyothernameornamesasdeterminedbytheGeneralPartner,includingthenameoftheGeneralPartner.Thewords“LimitedPartnership,”“LP,”“Ltd.”orsimilarwordsorlettersshallbeincludedinthePartnership’snamewherenecessaryforthepurposeofcomplyingwiththelawsofanyjurisdictionthatsorequires.TheGeneralPartnermaychangethenameofthePartnershipatanytimeandfromtimetotimeandshallnotifytheLimitedPartnersofsuchchangeinthenextregularcommunicationtotheLimitedPartners.

Section2.3RegisteredOffice;RegisteredAgent;PrincipalOffice;OtherOffices.UnlessanduntilchangedbytheGeneralPartner,theregisteredofficeofthePartnershipintheStateofDelawareshallbelocatedat1209OrangeStreet,Wilmington,Delaware19801,andtheregisteredagentforserviceofprocessonthePartnershipintheStateofDelawareatsuchregisteredofficeshallbeTheCorporationTrustCompany.TheprincipalofficeofthePartnershipshallbelocatedat2103CityWestBlvd.,Bldg.4,Suite800,Houston,Texas77042,orsuchotherplaceastheGeneralPartnermayfromtimetotimedesignatebynoticetotheLimitedPartners.ThePartnershipmaymaintainofficesatsuchotherplaceorplaceswithinoroutsidetheStateofDelawareastheGeneralPartnershalldeterminenecessaryorappropriate.TheaddressoftheGeneralPartnershallbe200ClarendonStreet,55thFloor,BostonMA02116,orsuchotherplaceastheGeneralPartnermayfromtimetotimedesignatebynoticetotheLimitedPartners.

Section2.4PurposeandBusiness.ThepurposeandnatureofthebusinesstobeconductedbythePartnershipshallbeto(a)engagedirectlyin,orenterintoorform,holdanddisposeofanycorporation,partnership,jointventure,limitedliabilitycompanyorotherarrangementtoengageindirectlyin,anybusinessactivitythatisapprovedbytheGeneralPartner,initssolediscretion,andthatlawfullymaybeconductedbyalimitedpartnershiporganizedpursuanttotheDelawareActand,inconnectiontherewith,toexercisealloftherightsandpowersconferreduponthePartnershippursuanttotheagreementsrelatingtosuchbusinessactivity,and(b)doanythingnecessaryorappropriatetotheforegoing,includingthemakingofcapitalcontributionsorloanstoaGroupMember;provided,however,thattheGeneralPartnershallnotcausethePartnershiptoengage,directlyorindirectly,inanybusinessactivitythattheGeneralPartnerdetermineswouldbereasonablylikelytocausethePartnershiptobetreatedasanassociationtaxableasacorporationorotherwisetaxableasanentityforfederalincometaxpurposes.Tothefullestextentpermittedbylaw,theGeneralPartnershallhavenodutyorobligationtoproposeorapprove,andmay,initssolediscretion,declinetoproposeorapprove,theconductbythePartnershipofanybusinessfreeofanyfiduciarydutyorobligationwhatsoevertothePartnership,anyLimitedPartnerand,indecliningtosoproposeorapprove,shallnotberequiredtoactingoodfaithorpursuanttoanyotherstandardimposedbythisAgreement,anyGroupMemberagreement,anyotheragreementcontemplatedherebyorundertheDelawareActoranyotherlaw,ruleorregulationoratequity.

Section2.5Powers.ThePartnershipshallbeempoweredtodoanyandallactsandthingsnecessary,appropriate,proper,advisable,incidentaltoorconvenientforthefurtheranceandaccomplishmentofthepurposesandbusinessdescribedinSection2.4andfortheprotectionandbenefitofthePartnership.

Section2.6Term.ThetermofthePartnershipcommenceduponthefilingoftheCertificateofLimitedPartnershipinaccordancewiththeDelawareActandshallcontinueinexistenceuntilthedissolutionofthePartnershipinaccordancewiththeprovisionsofARTICLEVIII.TheexistenceofthePartnershipasaseparatelegalentityshallcontinueuntilthecancellationoftheCertificateofLimitedPartnershipasprovidedintheDelawareAct.

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Section2.7PartnershipInterests;Certificates.CommonUnitshavebeenissuedbythePartnership,representingafractionalpartofthePartnershipInterestsofallLimitedPartners,andhavingtherightsandobligationsspecifiedwithrespecttoCommonUnitsinthisAgreement.UnlessotherwisedeterminedbytheGeneralPartner,thePartnershipshallnotissueanycertificatestoevidenceownershipofPartnershipInterests(oranyportionthereof).

ARTICLEIII.PARTNERSANDCAPITALCONTRIBUTIONS

Section3.1LimitedPartners.

(a)NameandAddress.ThenameandaddressoftheLimitedPartnerisAnchorMidstreamAcquisition,LLC,c/oArcLightCapitalPartners,LLC,200ClarendonStreet,55thFloor,Boston,MA02116.Asofthedatehereof,AnchorAcquisitionisthesoleLimitedPartnerandowns100%oftheCommonUnits.

(b)AdmissionofAdditionalLimitedPartners.OneormoreadditionalLimitedPartnersmaybeadmittedtothePartnershipwiththeconsentoftheGeneralPartner.ConcurrentlywiththeadmissionofanysuchadditionalLimitedPartnertothePartnership,theGeneralPartnershallamendthisAgreementtomakesuchchangesastheGeneralPartnershalldeterminetoreflectthefactthatthePartnershipshallhavesuchadditionalLimitedPartners.EachadditionalLimitedPartnershallexecuteanddeliverajoinderorcounterparttothisAgreement(asamendedinaccordancewiththeimmediatelyprecedingsentence),asnecessary,appropriateoradvisable.

(c)Withdrawal.ALimitedPartnermaynotwithdrawasaPartnerofthePartnership,normayaLimitedPartnerberequiredtowithdraw,normayaLimitedPartnerborroworwithdrawanyamountfromthePartnership,withoutthepriorwrittenconsentoftheGeneralPartner.

Section3.2CapitalContributions.ThePartnershavemadecapitalcontributionstothePartnershipassetforthinthebooksandrecordsofthePartnership.NoPartnershallberequiredtomakeanyadditionalcapitalcontributiontothePartnershippursuanttothisAgreement.

Section3.3NoTermination.Thesubstitution,death,insanity,dissolution(whethervoluntaryorinvoluntary),orbankruptcyofaLimitedPartnerwillnotaffecttheexistenceofthePartnership,andthePartnershipwillcontinueforthetermofthisAgreementuntilitsexistenceisterminatedasprovidedherein,ifthereisanotherLimitedPartneratsuchtime.

Section3.4TaxClassification.ThePartnershipshallbedisregardedasanentityseparatefromtheGeneralPartnerforU.S.federal(andapplicablestateandlocal)incometaxpurposesandshallnotmakeanyelectioncontrarytosuchclassification,exceptasotherwisedeterminedbytheGeneralPartner.

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ARTICLEIV.DISTRIBUTIONS

Section4.1Distributions.SubjecttothisSection4.1,within45daysfollowingtheendofeachQuarter,anamountequalto100%oftheAvailableCashwithrespecttosuchQuartershallbemadebythecompanytotheLimitedPartnersonaproratabasisinaccordancewiththeirrespectiveLimitedPartnerInterests.Notwithstandingtheforegoing,upondissolutionofthePartnershipasprovidedinARTICLEVIII,allcashreceivedduringoraftersuchQuarterinwhichsuchdissolutionoccurs,otherthanfromWorkingCapitalBorrowings,shallbeappliedanddistributedsolelyinaccordancewith,andsubjecttothetermsandconditionsof,ARTICLEVIII.NotwithstandinganyprovisiontothecontrarycontainedinthisAgreement,thePartnershipshallnotberequiredtomakeadistributiontotheLimitedPartnersifsuchdistributionwouldviolatetheDelawareActoranyotherapplicablelaw.TheGeneralPartnermaytreattaxespaidbythePartnershiponbehalfof,oramountswithheldwithrespectto,anyLimitedPartnerasadistributionofAvailableCashtosuchLimitedPartner.

ARTICLEV.MANAGEMENT

Section5.1Management.NoLimitedPartner,initscapacityassuch,shallparticipateintheoperation,managementorcontrol(withinthemeaningoftheDelawareAct)ofthePartnership’sbusiness,transactanybusinessinthePartnership’snameorhavethepowertosigndocumentsfororotherwisebindthePartnership.AllactionstakenbyanyAffiliateoftheGeneralPartneroranyofficer,director,employee,manager,member,generalpartner,agentortrusteeoftheGeneralPartneroranyofitsAffiliates,oranyofficer,director,employee,manager,member,generalpartner,agentortrusteeofaGroupMember,initscapacityassuch,shallnotbedeemedtobeparticipatinginthecontrolofthebusinessofthePartnershipbyalimitedpartnerofthePartnership(withinthemeaningofSection17-303(a)oftheDelawareAct)andshallnotaffect,impairoreliminatethelimitationsontheliabilityoftheLimitedPartnersunderthisAgreement.

Section5.2ReimbursementoftheGeneralPartner.

(a)ExceptasprovidedinthisSection5.2andelsewhereinthisAgreement,theGeneralPartnershallnotbecompensatedforitsservicesasageneralpartnerormanagingmemberofanyGroupMember.

(b)TheGeneralPartnershallbereimbursedonamonthlybasis,orsuchotherbasisastheGeneralPartnermaydetermine,for(i)alldirectandindirectexpensesitincursorpaymentsitmakesonbehalfofthePartnershipGroup(includingsalary,bonus,incentivecompensation,employmentbenefitsandotheramountspaidtoanyPerson,includingAffiliatesoftheGeneralPartnertoperformservicesforthePartnershipGrouporfortheGeneralPartnerinthedischargeofitsdutiestothePartnershipGroup),and(ii)allotherexpensesallocabletothePartnershipGrouporotherwiseincurredbytheGeneralPartnerinconnectionwithoperatingthePartnershipGroup’sbusiness(includingexpensesallocatedtotheGeneralPartnerbyitsAffiliates).TheGeneralPartnershalldeterminetheexpensesthatareallocabletotheGeneralPartnerorthePartnershipGroup.ReimbursementspursuanttothisSection5.2shallbeinaddition

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toanyreimbursementtotheGeneralPartnerastotheresultofindemnificationpursuanttoSection6.2.AnyallocationofexpensestothePartnershipbyAffiliatesoftheGeneralPartnerinamannerconsistentwiththen-applicableaccountingandallocationmethodologiesgenerallypermittedbyFERCforrate-makingpurposes(orintheabsenceofthen-applicablemethodologiespermittedbyFERC,consistentwiththemost-recentlyapplicablemethodologies)andpastbusinesspracticesshallbedeemedtobefairandreasonabletothePartnership.

(c)TheGeneralPartner,withouttheapprovaloftheLimitedPartners(whoshallhavenorighttovoteinrespectthereof),mayproposeandadoptonbehalfofthePartnershipbenefitplans,programsandpractices(includinganyplans,programsandpracticesinvolvingtheissuanceofPartnershipInterestsoroptionstopurchaseorrights,warrantsorappreciationrightsorphantomortrackinginterestsorothereconomicinterestsinthePartnershiporrelatingtoPartnershipInterests),orcausethePartnershiptoissuePartnershipInterestsorothersecuritiesinconnectionwith,orpursuantto,anybenefitplan,programorpracticemaintainedorsponsoredbytheGeneralPartneroranyofitsAffiliatesineachcaseforthebenefitofemployees,officersanddirectorsoftheGeneralPartneroranyofitsAffiliates,inrespectofservicesperformed,directlyorindirectly,forthebenefitofthePartnershipGroup.ThePartnershipagreestoissueandselltotheGeneralPartneroranyofitsAffiliatesanyPartnershipInterestsorothersecuritiesthattheGeneralPartnerorsuchAffiliatesareobligatedtoprovidetoanyemployees,officersanddirectorspursuanttoanysuchbenefitplans,programsorpractices.ExpensesincurredbytheGeneralPartnerinconnectionwithanysuchplans,programsandpractices(includingthenetcosttotheGeneralPartnerorsuchAffiliatesofPartnershipInterestsorothersecuritiespurchasedbytheGeneralPartnerorsuchAffiliates,fromthePartnershiporotherwise,tofulfilloptionsorawardsundersuchplans,programsandpractices)shallbereimbursedinaccordancewithSection5.2(b).AnyandallobligationsoftheGeneralPartnerunderanybenefitplans,programsorpracticesadoptedbytheGeneralPartneraspermittedbythisSection5.2(c)shallconstituteobligationsoftheGeneralPartnerhereunderandshallbeassumedbyanytransfereeoforsuccessortoalloftheGeneralPartner’sPartnershipInterest.

(d)TheGeneralPartneranditsAffiliatesmaychargeanymemberofthePartnershipGroupamanagementfeetotheextentnecessarytoallowthePartnershipGrouptoreducetheamountofanystatefranchiseorincometaxoranytaxbasedupontherevenuesorgrossmarginofanymemberofthePartnershipGroupifthetaxbenefitproducedbythepaymentofsuchmanagementfeeorfeesexceedstheamountofsuchfeeorfees.

ARTICLEVI.LIMITATIONSONLIABILITYANDINDEMNITY

Section6.1LimitationonLiability.Exceptasotherwiseexpresslyrequiredbylaw,theLimitedPartners,intheirrespectivecapacitiesassuch,shallhavenoliabilityfortheobligations,debtsorliabilitiesofthePartnershipexcepttotheextentprovidedintheDelawareAct.

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Section6.2Indemnification.

(a)TothefullestextentpermittedbylawbutsubjecttothelimitationsexpresslyprovidedinthisAgreement,allIndemniteesshallbeindemnifiedandheldharmlessbythePartnershipfromandagainstanyandalllosses,claims,damages,liabilities,jointorseveral,expenses(includinglegalfeesandexpenses),judgments,fines,penalties,interest,settlementsorotheramountsarisingfromanyandallthreatened,pendingorcontemplatedclaims,demands,actions,suitsorproceedings,whethercivil,criminal,administrativeorinvestigative,andwhetherformalorinformalandincludingappealsinwhichanyIndemniteemaybeinvolved,oristhreatenedtobeinvolved,asapartyorotherwise,byreasonofitsstatusasanIndemniteeandacting(orrefrainingtoact)insuchcapacity;provided,thattheIndemniteeshallnotbeindemnifiedandheldharmlesspursuanttothisAgreementiftherehasbeenafinalandnon-appealablejudgmententeredbyacourtofcompetentjurisdictiondeterminingthat,inrespectofthematterforwhichtheIndemniteeisseekingindemnificationpursuanttothisAgreement,theIndemniteeactedinbadfaithorengagedinfraud,willfulmisconductor,inthecaseofacriminalmatter,actedwithknowledgethattheIndemnitee’sconductwasunlawful.AnyindemnificationpursuanttothisSection6.2shallbemadeonlyoutoftheassetsofthePartnership,itbeingagreedthattheGeneralPartnershallnotbepersonallyliableforsuchindemnificationandshallhavenoobligationtocontributeorloananymoniesorpropertytothePartnershiptoenableittoeffectuatesuchindemnification.

(b)Tothefullestextentpermittedbylaw,expenses(includinglegalfeesandexpenses)incurredbyanIndemniteewhoisindemnifiedpursuanttoSection6.2(a)inappearingat,participatinginordefendinganyclaim,demand,action,suitorproceedingshall,fromtimetotime,beadvancedbythePartnershippriortoafinalandnon-appealablejudgmententeredbyacourtofcompetentjurisdictiondeterminingthat,inrespectofthematterforwhichtheIndemniteeisseekingindemnificationpursuanttothisSection6.2,theIndemniteeisnotentitledtobeindemnifieduponreceiptbythePartnershipofanyundertakingbyoronbehalfoftheIndemniteetorepaysuchamountifitshallbeultimatelydeterminedthattheIndemniteeisnotentitledtobeindemnifiedasauthorizedbythisSection6.2.

(c)TheindemnificationprovidedbythisSection6.2shallbeinadditiontoanyotherrightstowhichanIndemniteemaybeentitledunderanyagreement,pursuanttoanyvoteoftheholdersofoutstandingLimitedPartnerInterests,asamatteroflaw,inequityorotherwise,bothastoactionsintheIndemnitee’scapacityasanIndemniteeandastoactionsinanyothercapacity,andshallcontinueastoanIndemniteewhohasceasedtoserveinsuchcapacityandshallinuretothebenefitoftheheirs,successors,assignsandadministratorsoftheIndemnitee.

(d)ThePartnershipmaypurchaseandmaintain(orreimbursetheGeneralPartneroritsAffiliatesforthecostof)insurance,onbehalfoftheGeneralPartner,itsAffiliates,theIndemniteesandsuchotherPersonsastheGeneralPartnershalldetermine,againstanyliabilitythatmaybeassertedagainst,orexpensethatmaybeincurredby,suchPersoninconnectionwiththePartnership’sactivitiesorsuchPerson’sactivitiesonbehalfofthePartnership,regardlessofwhetherthePartnershipwouldhavethepowertoindemnifysuchPersonagainstsuchliabilityundertheprovisionsofthisAgreement.

(e)ForpurposesofthisSection6.2,thePartnershipshallbedeemedtohaverequestedanIndemniteetoserveasfiduciaryofanemployeebenefitplanwhenevertheperformancebyitofitsdutiestothePartnershipalsoimposesdutieson,orotherwiseinvolvesservicesby,ittotheplanorparticipantsorbeneficiariesoftheplan;excisetaxesassessedonanIndemniteewithrespecttoanemployeebenefitplanpursuanttoapplicablelawshallconstitute

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“fines”withinthemeaningofSection6.2(a),andactiontakenoromittedbyitwithrespecttoanyemployeebenefitplanintheperformanceofitsdutiesforapurposereasonablybelievedbyittobeinthebestinterestoftheparticipantsandbeneficiariesoftheplanshallbedeemedtobeforapurposethatisinthebestinterestsofthePartnership.

(f)InnoeventmayanIndemniteesubjecttheLimitedPartnerstopersonalliabilitybyreasonoftheindemnificationprovisionssetforthinthisAgreement.

(g)AnIndemniteeshallnotbedeniedindemnificationinwholeorinpartunderthisSection6.2solelybecausetheIndemniteehadaninterestinthetransactionwithrespecttowhichtheindemnificationappliesifthetransactionwasotherwisepermittedbythetermsofthisAgreement.

(h)TheprovisionsofthisSection6.2areforthebenefitoftheIndemniteesandtheirheirs,successors,assigns,executorsandadministratorsandshallnotbedeemedtocreateanyrightsforthebenefitofanyotherPersons.

(i)Noamendment,modificationorrepealofthisSection6.2oranyprovisionhereofshallinanymannerterminate,reduceorimpairtherightofanypast,presentorfutureIndemniteetobeindemnifiedbythePartnership,northeobligationsofthePartnershiptoindemnifyanysuchIndemniteeunderandinaccordancewiththeprovisionsofthisSection6.2asineffectimmediatelypriortosuchamendment,modificationorrepealwithrespecttoclaimsarisingfromorrelatingtomattersoccurring,inwholeorinpart,priortosuchamendment,modificationorrepeal,regardlessofwhensuchclaimsmayariseorbeasserted.

Section6.3LiabilityofIndemnitees.

(a)NotwithstandinganythingtothecontrarysetforthinthisAgreement,noIndemniteeshallbeliableformonetarydamagestothePartnership,thePartnersoranyotherPersonswhohaveacquiredinterestsinthePartnershipInterests,forlossessustainedorliabilitiesincurredasaresultofanyactoromissionofanIndemniteeunlesstherehasbeenafinalandnon-appealablejudgmententeredbyacourtofcompetentjurisdictiondeterminingthat,inrespectofthematterinquestion,theIndemniteeactedinbadfaithorengagedinfraud,willfulmisconductor,inthecaseofacriminalmatter,actedwithknowledgethattheIndemnitee’sconductwascriminal.

(b)SubjecttoitsobligationsanddutiesasGeneralPartnersetforthinSection6.2(a),theGeneralPartnermayexerciseanyofthepowersgrantedtoitbythisAgreementandperformanyofthedutiesimposeduponithereundereitherdirectlyorbyorthroughitsagents,andtheGeneralPartnershallnotberesponsibleforanymisconductornegligenceonthepartofanysuchagentappointedbytheGeneralPartneringoodfaith.

(c)Totheextentthat,atlaworinequity,anIndemniteehasduties(includingfiduciaryduties)andliabilitiesrelatingtheretotothePartnershiportothePartners,theGeneralPartnerandanyotherIndemniteeactinginconnectionwiththePartnership’sbusinessoraffairsshallnotbeliabletothePartnershiportoanyPartnerforitsgoodfaithrelianceontheprovisionsofthisAgreement.

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(d)Anyamendment,modificationorrepealofthisSection6.3oranyprovisionhereofshallbeprospectiveonlyandshallnotinanywayaffectthelimitationsontheliabilityoftheIndemniteesunderthisSection6.3asineffectimmediatelypriortosuchamendment,modificationorrepealwithrespecttoclaimsarisingfromorrelatingtomattersoccurring,inwholeorinpart,priortosuchamendment,modificationorrepeal,regardlessofwhensuchclaimsmayariseorbeasserted.

ARTICLEVII.TRANSFERABILITY

Section7.1TransfersofPartnershipInterests.WithouttheconsentoftheGeneralPartner,aLimitedPartnermaynotsell,assign,transfer,pledge,orotherwisedisposeofalloranypartofitsPartnershipInterests.AtransfereeofsuchPartnershipInterests(orsuchportionthereof)shallbeadmittedtothePartnershipasaPartnereffectiveuponthelaterof(a)thedueexecutionofajoinderorcounterparttothisAgreement(asamendedinaccordanceherewith)and(b)thetransferofsuchPartnershipInterest(orsuchportionthereof)tosuchtransferee.

ARTICLEVIII.DISSOLUTIONANDLIQUIDATION

Section8.1Dissolution.ThePartnershipshallbedissolvedupontheoccurrenceofanyofthefollowingevents:

(a)theentryofadecreeofjudicialdissolutionofthePartnershippursuanttotheprovisionsoftheDelawareAct;

(b)anelectiontodissolvethePartnershipbytheGeneralPartnerthatisapprovedbytheholdersofaUnitMajority;or

(c)atanytimetherearenoLimitedPartners,unlessthePartnershipiscontinuedwithoutdissolutioninaccordancewiththeDelawareAct.

Section8.2EffectofDissolution.Upondissolution,thePartnershipshallceasetocarryonitsbusiness,exceptaspermittedbytheDelawareAct.

Section8.3WindingUp,LiquidationandDistributionofAssets.Upondissolution,thePartnership’saffairsshallbewoundupinanorderlymanner.TheGeneralPartneroritsdesigneeshallbetheliquidatortowinduptheaffairsofthePartnership(suchindividual,insuchcapacity,the“Liquidator”).Inperformingitsduties,theLiquidatorisauthorizedtosell,distribute,exchangeorotherwisedisposeofPartnershipassetsinaccordancewiththeDelawareActinanymannerthattheLiquidatorshalldetermine.

Section8.4CertificateofCancellation.UponcompletionofthewindingupoftheaffairsofthePartnership,theGeneralPartneroritsdesigneeshallfileadulyexecutedcertificateofcancellationwiththeSecretaryofStateoftheStateofDelawareinaccordancewiththeDelawareAct.

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ARTICLEIX.MISCELLANEOUS

Section9.1Amendments.ThisAgreementmaybeamendedforanyreasonbytheGeneralPartnerinitssolediscretionandnoamendmenttothisAgreementshallrequiretheconsentoftheLimitedPartners.

Section9.2Successors.Exceptasotherwiseprovidedherein,thisAgreementwillinuretothebenefitofandbebindinguponthePartnersandtheirlegalrepresentatives,heirs,successorsandassigns.

Section9.3NoThirdPartyBeneficiaries.ThisAgreementshallnotconferanyrightsorremediesuponanyPersonotherthanthePartnersandtheirrespectivesuccessorsandpermittedassigns.

Section9.4GoverningLaw;Severability.ThisAgreementshallbegovernedbyandconstruedinaccordancewiththelawsoftheStateofDelaware,withoutregardtotheconflictoflawrulesthereof,and,tothemaximumextentpossible,insuchmannerastocomplywithallthetermsandconditionsoftheDelawareAct.IfitisdeterminedbyacourtofcompetentjurisdictionthatanyprovisionofthisAgreementisinvalidunderapplicablelaw,suchprovisionwillbeineffectiveonlyinsuchjurisdictionandonlytotheextentofsuchprohibitionorinvalidity,withoutinvalidatingtheremainderofthisAgreement.

Section9.5Notices.Allnotices,demandsandothercommunicationstobegivenanddeliveredunderorbyreasonofprovisionsunderthisAgreementwillbeinwritingandwillbedeemedtohavebeengivenwhenpersonallydelivered,mailedbyfirstclassmail,returnreceiptrequestedorbyreliableovernightcourier,ortransmittedbyelectronicmailtransmissionorelectronicfacsimiletotheaddressessetforthonthesignaturepageheretoortosuchotheraddressashasbeenindicatedtoallPartners.

Section9.6Counterparts.ThisAgreementmaybeexecutedinanynumberofcounterparts,anyoneofwhichneednotcontainthesignaturesofmorethanoneparty,butallofsuchcounterpartstogethershallconstituteoneagreement,andtotheextentsuchagreementissignedanddeliveredbymeansofafacsimilemachineorotherelectronictransmission,itwillbetreatedinallmannerandrespectsasanoriginalagreementandwillbeconsideredtohavethesamebindinglegaleffectasifitweretheoriginalsignedversionthereofdeliveredinperson.

[Signaturepagesfollow.]

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IN WITNESS WHEREOF, theundersignedhavecausedthisAgreementtobesignedasofthedatefirstwrittenabove.

GENERAL PARTNER :

AMERICAN MIDSTREAM GP, LLC,aDelawarelimitedliabilitycompany

By: /s/DanielR.ReversName: DanielR.ReversTitle: PresidentAddress: c/oArcLightCapitalPartners,LLC

200ClarendonStreet,55thFloorBoston,MA02116

[SignaturePagetoSixthAmendedandRestatedAgreementofLimitedPartnershipofAmericanMidstreamPartners,LP]

LIMITED PARTNER :

ANCHOR MIDSTREAM ACQUISITION, LLC,aDelawarelimitedliabilitycompany

By: /s/DanielR.ReversName: DanielR.ReversTitle: PresidentAddress: c/oArcLightCapitalPartners,LLC

200ClarendonStreet,55thFloorBoston,MA02116

[SignaturePagetoSixthAmendedandRestatedAgreementofLimitedPartnershipofAmericanMidstreamPartners,LP]

Exhibit 3.2

StateofDelawareSecretaryofState

DivisionofCorporationsDelivered08:04AM07/23/2019FILED08:04AM07/23/2019

SR20196098621–FileNumber4720325

Execution Version

CERTIFICATE OF MERGER OFANCHOR MIDSTREAM MERGER SUB, LLC

(a Delaware limited liability company)WITH AND INTO

AMERICAN MIDSTREAM PARTNERS, LP(a Delaware limited partnership)

July23,2019

PursuanttoSection17-211oftheDelawareRevisedUniformLimitedPartnershipAct(the“DRULPA”)andSection18-209oftheDelawareLimitedLiabilityCompanyAct(the“DLLCA”),AmericanMidstreamPartners,LP,aDelawarelimitedpartnership(the“Partnership”),herebycertifiestothefollowinginformationrelatingtothemergerofAnchorMidstreamMergerSub,LLC,aDelawarelimitedliabilitycompany,withandintothePartnership(the“Merger”):

FIRST:

Thename,typeofentityandstateoforganizationofeachoftheconstituententities(the“ConstituentEntities”)totheMergerisasfollows:

Name Entity Type StateAmericanMidstreamPartners,LP LimitedPartnership Delaware

AnchorMidstreamMergerSub,LLC LimitedLiabilityCompany Delaware

SECOND:

TheAgreementandPlanofMergerhasbeenapprovedandexecutedbyeachoftheConstituentEntitiesinaccordancewithSection17-211oftheDRULPAandSection18-209oftheDLLCA.

THIRD:

ThePartnershipshallbetheentitysurvivingtheMerger(the“SurvivingEntity”),andthenameoftheSurvivingEntityshallremain“AmericanMidstreamPartners,LP.”

FOURTH:

ThecertificateoflimitedpartnershipofthePartnershipasineffectimmediatelypriortotheeffectivenessofthisCertificateofMergershallbethecertificateoflimitedpartnershipoftheSurvivingEntity,withoutanychangesoramendmentstheretoasaresultoftheMerger.

FIFTH:

TheAgreementandPlanofMergerisonfileat2103CityWestBlvd.,Building4,Suite800,Houston,Texas77042,aplaceofbusinessoftheSurvivingEntity,andacopythereofwillbefurnishedbytheSurvivingEntity,onrequestandwithoutcost,toanypartnerormemberof,orpersonholdinganinterestin,eitheroftheConstituentEntities.

SIXTH:

ThisCertificateofMergerandtheMergershallbecomeeffectiveatthetimethisCertificateofMergerisfiledwiththeSecretaryofStateoftheStateofDelaware.

[Signaturepagefollows.]

IN WITNESS WHEREOF, theSurvivingEntityhasexecutedanddeliveredthisCertificateofMergerasofthedatefirstwrittenabove.

AMERICAN MIDSTREAM PARTNERS, LP

By:AMERICANMIDSTREAMGP,LLC,itsgeneralpartner

By: /s/LouisJ.DoreyName: LouisJ.DoreyTitle: InterimPresidentandChiefExecutiveOfficer

[SignaturePagetoCertificateofMerger]

Exhibit 3.3

Execution Version

STATE OF DELAWARECERTIFICATE OF FORMATION

OFTHIRD COAST MIDSTREAM, LLC

July23,2019

ThisCertificateofFormationofThirdCoastMidstream,LLC,datedasofJuly23,2019,isbeingdulyexecutedandfiledbytheundersigned,anauthorizedperson,toformalimitedliabilitycompanyunderSections18-201and18-204oftheDelawareLimitedLiabilityCompanyAct.

FIRST: Thenameofthelimitedliabilitycompanyis“ThirdCoastMidstream,LLC”(the“Company”).

SECOND: TheaddressoftheregisteredofficeoftheCompanyintheStateofDelawareis1209OrangeStreet,Wilmington,Delaware,19801.

THIRD:

ThenameandaddressoftheregisteredagentforserviceofprocessontheCompanyintheStateofDelawareisTheCorporationTrustCompany,1209OrangeStreet,Wilmington,Delaware,19801.

[Signaturepagefollows.]

IN WITNESS WHEREOF, theundersignedhasexecutedthisCertificateofFormationasofthedatefirstwrittenabove.

SOLE MEMBER :

ANCHOR MIDSTREAM ACQUISITION, LLC,aDelawarelimitedliabilitycompany

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoCertificateofFormation–ThirdCoastMidstream,LLC]

Exhibit 3.4

Execution Version

THELIMITEDLIABILITYCOMPANYINTERESTSDESCRIBEDINTHISLIMITEDLIABILITYCOMPANYAGREEMENTHAVENOTBEENREGISTEREDUNDERTHESECURITIESACTOF1933,ASAMENDED,ORUNDERANYSTATESECURITIESACTSINRELIANCEUPONEXEMPTIONSUNDERTHOSEACTS.THESALEOROTHERDISPOSITIONOFSUCHLIMITEDLIABILITYCOMPANYINTERESTSISPROHIBITEDUNLESSSUCHSALEORDISPOSITIONISMADEINCOMPLIANCEWITHALLSUCHAPPLICABLEACTS.ADDITIONALRESTRICTIONSONTRANSFEROFSUCHLIMITEDLIABILITYCOMPANYINTERESTSARESETFORTHINTHISAGREEMENT.

LIMITED LIABILITY COMPANY AGREEMENTOF

THIRD COAST MIDSTREAM, LLC

ThisLimitedLiabilityCompanyAgreementofThirdCoastMidstream,LLC,aDelawarelimitedliabilitycompany(the“Company”),ismadeandenteredintoasofJuly23,2019,byThirdCoastMidstreamHoldings,LLC,aDelawarelimitedliabilitycompany,initscapacityasthesoleandmanagingmemberoftheCompany(anyPersonservinginsuchcapacity,the“ManagingMember”).

WITNESSETH:

WHEREAS,theCompanywasformedasalimitedliabilitycompanyonJuly23,2019,whenAmericanMidstreamPartners,LP,apredecessoroftheCompany(the“Partnership”),convertedfromaDelawarelimitedpartnershiptoalimitedliabilitycompany(the“Conversion”),pursuanttoaCertificateofConversionandaCertificateofFormation(the“Certificate”)filedwiththeSecretaryofStateoftheStateofDelawareonJuly23,2019,inaccordancewiththeprovisionsoftheDelawareLimitedLiabilityCompanyAct(Title6oftheDelawareCode,Section18-101,etseq.)(andanysuccessorstatute,asamendedfromtimetotime,the“Act”);

WHEREAS,asofthedatehereofandimmediatelypriortotheeffectivenessofthisAgreement,AnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompanyandthesolelimitedpartnerofthePartnership,ismergingwithandintotheManagingMember,withtheManagingMember,formerlyknownas“AmericanMidstreamGP,LLC”,survivingthemergeras“ThirdCoastMidstreamHoldings,LLC”(the“AffiliateMerger”);

WHEREAS,pursuanttotheConversion,alloftheissuedandoutstandingcommonunitsofthePartnershipwereconvertedintomembershipinterestsoftheCompany,andaftergivingeffecttotheAffiliateMerger,theManagingMember,whoheldalloftheissuedandoutstandingcommonunitsofthePartnership,holdsallofthemembershipinterestsoftheCompanyandisthesolememberoftheCompany;and

WHEREAS,theManagingMemberdesirestosetforthhereinitsstatementsregardingthemannerinwhichtheCompanyshallbegovernedandoperated.

NOW,THEREFORE,theundersigned,intendingtobelegallyboundhereby,certifiesandcovenantsthefollowing:

ARTICLEI.DEFINITIONSANDINTERPRETATION

1.1Definitions.ThefollowingtermshavethedefinitionshereinafterindicatedwheneverusedinthisAgreementwithinitialcapitalletters.

“Act”hasthemeaningsetforthintherecitalsofthisAgreement.

“AffiliateMerger”hasthemeaningsetforthintherecitalsofthisAgreement.

“Agreement”meansthisLimitedLiabilityCompanyAgreement,asamendedfromtimetotimeinaccordancewithitstermsandtheapplicableprovisionsoftheAct.

“AvailableCash”means,withrespecttoanyQuarterendingpriortothedissolutionoftheCompanypursuanttoArticleIX:

(a)thesumof(i)allcashandcashequivalentsoftheCompanyGroup(ortheCompany’sproportionateshareofcashandcashequivalentsinthecaseofSubsidiariesthatarenotwhollyowned)onhandattheendofsuchQuarter,and(ii)iftheManagingMembersodetermines,alloranyportionofadditionalcashandcashequivalentsoftheCompanyGroup(ortheCompany’sproportionateshareofcashandcashequivalentsinthecaseofSubsidiariesthatarenotwhollyowned)onhandonthedateofdeterminationofAvailableCashwithrespecttosuchQuarterresultingfromWorkingCapitalBorrowingsmadesubsequenttotheendofsuchQuarter;less

(b)theamountofanycashreserves(ortheCompany’sproportionateshareofcashreservesinthecaseofSubsidiariesthatarenotwhollyowned)establishedbytheManagingMemberto(i)providefortheproperconductofthebusinessoftheCompanyGroup(includingreservesforfuturecapitalexpendituresandforanticipatedfuturecreditneedsoftheCompanyGroupandforrefundsofcollectedratesreasonablylikelytoberefundedasaresultofasettlementorhearingrelatingtoFERCrateproceedingsorrateproceedingsunderapplicablestatelaw,ifany)subsequenttosuchQuarter,(ii)complywithapplicablelaworanyloanagreement,securityagreement,mortgage,debtinstrumentorotheragreementorobligationtowhichanymemberoftheCompanyGroupisapartyorbywhichitisboundoritsassetsaresubjector(iii)providefundsfordistributionsunderSection5.1inrespectofanyoneormoreofthenextfourQuarters;

provided,however,thatdisbursementsmadebyamemberoftheCompanyGrouporcashreservesestablished,increasedorreducedaftertheendofsuchQuarterbutonorbeforethedateofdeterminationofAvailableCashwithrespecttosuchQuartershallbedeemedtohavebeenmade,established,increasedorreduced,forpurposesofdeterminingAvailableCash,withinsuchQuarteriftheManagingMembersodetermines.

Notwithstandingtheforegoing,“AvailableCash”withrespecttotheQuarterinwhichthedissolutionoftheCompanyoccurspursuanttoArticleIXandanysubsequentQuartershallequalzero.

“Certificate”hasthemeaningsetforthintherecitalsofthisAgreement.

“Company”hasthemeaningsetforthinthepreambleofthisAgreement.

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“CompanyGroup”meanstheCompanyanditsSubsidiariestreatedasasingleconsolidatedentity.

“CoveredPerson”hasthemeaningsetforthinSection7.1.

“FERC”meanstheFederalEnergyRegulatoryCommissionorsuccessortopowersthereof.

“LiquidatingTrustee”meanstheManagingMemberorsuchotherPersonappointedbytheManagingMembertoserveastheliquidatingtrusteeoftheCompany.

“ManagingMember”hasthemeaningsetforthinthepreambleofthisAgreement.

“Member”meanseachoftheManagingMemberandanyPersonadmittedasanadditionalorsubstitutememberoftheCompanypursuanttothisAgreement.

“MembershipInterest”meansthelimitedliabilitycompanyinterestintheCompanyhavingallrightsandobligations(economicandotherwise)towhichaholderthereofmaybeentitledpursuanttothisAgreementandtheAct.

“Person”meansanynaturalperson,corporation,limitedpartnership,generalpartnership,limitedliabilitycompany,jointstockcompany,jointventure,association,company,estate,trust,orotherorganizationorentity,whetherornotalegalentity,custodian,trustee-executor,administrator,nomineeorentityinarepresentativecapacity,oranygovernmentoragencyorpoliticalsubdivisionthereof.

“Quarter”means,unlessthecontextrequiresotherwise,afiscalquarteroftheCompany,or,withrespecttothefirstfiscalquarteroftheCompanyafterthedatehereof,theportionofsuchfiscalquarterafterthedatehereof.

“Subsidiary”means,withrespecttoanyPerson,(a)acorporationofwhichmorethan50%ofthevotingpowerofsharesentitled(withoutregardtotheoccurrenceofanycontingency)tovoteintheelectionofdirectorsorothergoverningbodyofsuchcorporationisowned,directlyorindirectly,atthedateofdetermination,bysuchPerson,byoneormoreSubsidiariesofsuchPersonoracombinationthereof,(b)apartnership(whethergeneralorlimited)inwhichsuchPersonoraSubsidiaryofsuchPersonis,atthedateofdetermination,ageneralorlimitedpartnerofsuchpartnership,butonlyifmorethan50%ofthepartnershipinterestsofsuchpartnership(consideringallofthepartnershipinterestsofthepartnershipasasingleclass)isowned,directlyorindirectly,atthedateofdetermination,bysuchPerson,byoneormoreSubsidiariesofsuchPerson,oracombinationthereof,or(c)anyotherPerson(otherthanacorporationorapartnership)inwhichsuchPerson,oneormoreSubsidiariesofsuchPerson,oracombinationthereof,directlyorindirectly,atthedateofdetermination,has(i)atleastamajorityownershipinterestor(ii)thepowertoelectordirecttheelectionofamajorityofthedirectorsorothergoverningbodyofsuchPerson.

“Units”hasthemeaningsetforthinSection4.3.

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“WorkingCapitalBorrowings”meansborrowingsusedsolelyforworkingcapitalpurposesortopaydistributionstotheMembersmadepursuanttoacreditfacility,commercialpaperfacilityorothersimilarfinancingarrangements,providedthatwhensuchborrowingsareincurreditistheintentoftheborrowertorepaysuchborrowingswithin12monthsotherthanfromadditionalWorkingCapitalBorrowings.

1.2Construction.WheneverthesingularnumberisusedinthisAgreementandwhenrequiredbythecontext,thesameshallincludethepluralandviceversa,andthemasculinegendershallincludethefeminineandneutergendersandviceversa.

1.3Headings.TheheadingsinthisAgreementareinsertedforconvenienceonlyandareinnowayintendedtodescribe,interpret,define,orlimitthescope,extentorintentofthisAgreementoranyprovisionhereof.

1.4Conflicts.IntheeventofadirectconflictbetweentheprovisionsofthisAgreementandthemandatoryprovisionsoftheActoranyprovisionoftheCertificate,theActandtheCertificate,inthatorderofpriority,shallcontrol.

ARTICLEII.ORGANIZATIONALMATTERS

2.1Name.ThenameoftheCompanyis“ThirdCoastMidstream,LLC”.

2.2PrincipalPlaceofBusiness.TheprincipalplaceofbusinessoftheCompanyshallbe2103CityWestBlvd.,Bldg.4,Suite800,Houston,Texas77042,orsuchotherplaceastheManagingMembermayfromtimetotimedesignate.

2.3RegisteredOfficeandRegisteredAgent.TheinitialregisteredagentoftheCompanyisTheCorporationTrustCompany,andtheinitialregisteredofficeoftheCompanyshallbeat1209OrangeStreet,Wilmington,Delaware19801.TheManagingMembermaychangetheregisteredofficeandregisteredagentfromtimetotimebyfilingtheaddressofthenewregisteredofficeand/orthenameofthenewregisteredagentwiththeSecretaryofStateoftheStateofDelawarepursuanttotheAct.

2.4Term.ThetermoftheCompanycommencedupontheeffectivenessoftheCertificatewiththeSecretaryofStateoftheStateofDelaware,andshallcontinueindefinitely,unlessearlierdissolvedinaccordancewithSection9.1.

2.5TaxStatus.UntilsuchtimethatadditionalmembersareadmittedtotheCompanyinaccordancewithSection4.2,theManagingMemberintendsthattheCompanyshallbetreatedasadisregardedentityforallfederalandstateincometaxpurposes,ratherthananassociationtaxableasacorporation.AllprovisionsofthisAgreementaretobeconstruedsoastopreservetheCompany’staxstatusasadisregardedentity.

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ARTICLEIII.BUSINESSOFCOMPANY

ThebusinessoftheCompanyshallbetoengageinanylawfulactoractivitiesforwhichlimitedliabilitycompaniesmaybeformedpursuanttotheActandanylawfulactoractivitynecessary,appropriateoradvisabletherefororincidentalthereto.

ARTICLEIV.MEMBERS;CAPITAL

4.1ManagingMember.ThenameandaddressoftheManagingMemberisThirdCoastMidstreamHoldings,LLC,c/oArcLightCapitalPartners,LLC,200ClarendonStreet,55thFloor,BostonMA02116.Asofthedatehereof,theManagingMemberowns100%oftheMembershipInterest,andtherearenootherMembers.

4.2AdditionalMembers.OneormoreadditionalMembersmaybeadmittedtotheCompanywiththeconsentoftheManagingMember.ConcurrentlywiththeadmissionofanysuchadditionalMemberstotheCompany,theManagingMembershallamendthisAgreementtomakesuchchangesastheManagingMembershalldeterminetoreflectthefactthattheCompanyshallhavesuchadditionalMembers.EachadditionalMembershallexecuteanddeliverajoinderorcounterparttothisAgreement(asamendedinaccordancewiththeimmediatelyprecedingsentence),asnecessary,appropriateoradvisable.

4.3Units.TheCompanyshallhaveoneclassofunits,whichshallbeuncertificatedanddenominatedandreferredtohereinas“Units”.EachUnitshall(a)givetheMemberwhoistheownerthereoftherighttoreceivedistributions(liquidatingorotherwise)inaccordancewithSection5.1andasotherwisespecifiedhereinand(b)givetheMemberwhoistheownerthereoftheotherrightswithrespecttosuchUnitasspecifiedherein.

4.4IssuancesofNewUnits.Fromtimetotimeafterthedatehereof,theCompanyisauthorizedto,andshall,acceptadditionalcapitalcontributionsmadewiththeconsentoftheManagingMemberinexchangefortheissuanceofnewUnits.ExhibitAsetsforththeUnitsownedbytheManagingMemberasofthedatehereofandshallberevisedbytheOfficersasnecessarytoreflectchangesandadjustmentsresultingfromtheissuance,redemptionoranytransferofUnitsmadeinaccordancewiththetermsofthisAgreement;provided,thatafailuretoreflectanysuchissuance,redemptionoranytransferonExhibitAshallnotpreventanysuchissuance,redemptionoranytransferfrombeingeffective.

4.5AdditionalCapitalContributions.NoMembershallberequiredtomakeanyadditionalcapitalcontributiontotheCompanyinrespectoftheUnitsthenheldbysuchMemberexcepttotheextentanyMemberagreesinwritingtofundadditionalcapitalcontributionsasrequestedbytheManagingMember.EachUnitissuedtoaMemberpursuanttothisSection4.5willbedulyauthorizedandvalidlyissuedinaccordancewiththisAgreementandfullypaid(totheextentrequiredbythisAgreement)andnonassessable(exceptassuchnonassessabilitymaybeaffectedbymattersdescribedinSection18-607oftheAct).WiththeapprovaloftheManagingMember,theMembersmaymakecapitalcontributionsofpropertyinlieuofcash.Theamountofeachsuchadditionalcapitalcontributionshallbethefairmarketvalueofthecontributedproperty

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asdeterminedbytheManagingMemberorsuchotheramountasshallbeagreedbytheManagingMemberandthecontributingMember.TheprovisionsofthisSection4.5areintendedsolelytobenefittheMembersand,tothefullestextentpermittedbyapplicablelaw,shallnotbeconstruedasconferringanybenefituponanycreditoroftheCompany(andnosuchcreditorshallbeathird-partybeneficiaryofthisAgreement),andnoMembershallhaveanydutyorobligationtoanycreditoroftheCompanytomakeanyadditionalcapitalcontributionsortocausetheManagingMembertoconsenttothemakingofadditionalcapitalcontributions.

4.6WithdrawaloftheManagingMember.TheManagingMembershallbeentitledtovoluntarilywithdrawfromtheCompany.Uponsuchwithdrawal,ifnootherMemberexists,thentheCompanyshalldissolveinaccordancewiththeprovisionsofArticleIX.

ARTICLEV.DISTRIBUTIONS

5.1Distributions.SubjecttothisSection5.1,within45daysfollowingtheendofeachQuarter,anamountequalto100%ofAvailableCashwithrespecttosuchQuartershallbepaidbytheCompanytotheMembersonaproratabasisinaccordancewiththeirrespectiveMembershipInterests.Notwithstandingtheforegoing,upondissolutionoftheCompanyprovidedinSection9.1,allcashreceivedduringoraftersuchQuarterinwhichsuchdissolutionoccurs,otherthanfromWorkingCapitalBorrowings,shallbeappliedanddistributedsolelyinaccordancewith,andsubjecttothetermsandconditionsof,Section9.3.NotwithstandinganyotherprovisionofthisAgreement,alldistributionsrequiredtobemadeunderthisAgreementorotherwisemadebytheCompanyshallbemadesubjecttoSections18-607and18-804oftheAct.NotwithstandinganyprovisiontothecontrarycontainedinthisAgreement,theCompanyshallnotberequiredtomakeadistributiontotheMembersifsuchdistributionwouldviolatetheAct,anyotherapplicablelaworanyloanagreement,securityagreement,mortgage,debtinstrumentorotheragreementorobligationtowhichanymemberoftheCompanyGroupisapartyorbywhichitisboundoritsassetsaresubject.TheManagingMembermaytreattaxespaidbytheCompanyonbehalfof,oramountswithheldwithrespectto,anyMemberasadistributionofAvailableCashtosuchMember.

ARTICLEVI.MANAGEMENT

6.1Management.ThebusinessandaffairsoftheCompanyshallbemanagedbytheManagingMember.TheManagingMembershallhavecompleteauthority,poweranddiscretiontomanageandcontrolthebusiness,affairsandassetsoftheCompany,tomakealldecisionswithrespecttheretoandtoperformorundertakeanyandallotheractsoractivitiesnecessary,appropriateoradvisablefor,orincidentalto,themanagementorcontrolofthebusiness,affairsorassetsoftheCompany,includingdelegatinganyofitsauthoritytoanyOfficer(asdefinedbelow)pursuanttoandinaccordancewithSection6.2,andtodoanyandallotheractsandthingsnecessary,appropriateoradvisabletoeffectuatethepurposesofthisAgreement.TheManagingMembershallbedeemeda“manager”withinthemeaningoftheAct.AnyactiontakenbytheManagingMembershallconstitutetheactofandservetobindtheCompany.PersonsdealingwiththeCompanyareentitledtorelyconclusivelyonthepowerandauthorityoftheManagingMemberassetforthinthisAgreement.

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6.2Officers.

(a)TheManagingMembermay,fromtimetotime,designateoneormoreofficerstoactforandonbehalfoftheCompanywithsuchauthorityasmaybedelegatedtosuchofficersbytheManagingMember(eachsuchdesignatedindividual,an“Officer”),eachofwhomshallserveasanOfficeruntilhisorherdeath,resignation,removalordisqualificationoruntilhisorherreplacementisdesignatedinaccordancewithclause(e)ofthisSection6.2.TheOfficersmayconsistofaPresident,oneormoreVice-Presidents,aSecretary,oneormoreAssistantSecretaries,aTreasurerandoneormoreAssistantTreasurersandanyothertitlesasmaybedesignatedbytheManagingMember.Anynumberofofficesmaybeheldbythesameindividual.

(b)TheinitialOfficers,andtheirrespectivetitles,asofthedatehereof,aresetforthonExhibitB.TheManagingMembermayappointsuchadditionalOfficersasmaybenecessary,appropriateoradvisableforthebusinessoftheCompany,eachofwhomshallholdofficeforsuchperiod,havesuchauthorityandperformsuchdutiesasareprovidedinthisAgreementorastheManagingMembermayfromtimetotimedetermine.

(c)AnyactiontakenbyanOfficerdesignatedbytheManagingMemberpursuanttoauthoritydelegatedtosuchOfficershallconstitutetheactofandservetobindtheCompany.TheManagingMemberherebyauthorizesOfficerstobindtheCompanyandenterintoagreementsforandonbehalfoftheCompany.PersonsdealingwiththeCompanyareentitledtorelyconclusivelyonthepowerandauthorityofanyOfficerdesignatedinaccordancewiththisAgreementandanywritteninstrumentexecutedbytheManagingMemberdesignatingsuchOfficerand/ordelegatingauthoritytosuchOfficer.

(d)AnyOfficermayberemovedatanytime,withorwithoutcause,bytheManagingMember.AnyOfficermayresignatanytimebygivingwrittennoticetotheManagingMember.Anyresignationshalltakeeffectuponreceiptofsuchnoticeoratsuchlatertimeasmaybespecifiedtherein,andtheacceptanceoftheresignationshallnotbenecessarytomakeiteffective.Anyresignationiswithoutprejudicetotherights,ifany,oftheCompanyunderanycontracttowhichtheOfficerisaparty.

(e)AvacancyinanyofficeoftheCompanybecauseofdeath,resignation,removalordisqualificationorothercauseshallbefilledbytheManagingMember.

6.3OtherAgents.UnlessexpresslyauthorizedtodosobythisAgreementortheManagingMember,noattorney-in-fact,employeeorotheragentoftheCompanyshallhaveanypowerorauthoritytobindtheCompanyinanyway,includingtopledgeitscreditorassumeanyliabilityorundertakeanyotherobligationforanypurpose.

6.4NoExclusiveDutytoCompany.TheManagingMemberandeachOfficershallnotberequiredtotendtothebusinessandaffairsoftheCompanyassuchPerson’ssoleandexclusivefunction.TheManagingMemberandanyOfficermayhaveotherbusinessinterestsandmayengageinotheractivitiesinadditiontothoserelatingtotheCompany.TheCompanyshallnothaveanyright,byvirtueofthisAgreement,toshareorparticipateininvestmentsoractivitiesoftheManagingMemberorOfficerortotheincomeorproceedsderivedtherefrom(unlesssuchinvestmentsoractivitiesareconductedinsuchPerson’scapacityasaMemberormanageroftheCompanyoranOfficer).

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6.5BankAccounts.TheManagingMemberoranyOfficermayfromtimetotimeopenbankaccountsinthenameoftheCompany.

6.6Expenses.

(a)ExceptasprovidedinthisSection6.6andelsewhereinthisAgreement,theManagingMembershallnotbecompensatedforitsservicesasthemanagingmemberoftheCompanyoramanagerofanyoftheCompany’sSubsidiaries.

(b)TheManagingMembershallbereimbursedonamonthlybasis,orsuchotherbasisastheManagingMembermaydetermine,for(i)alldirectandindirectexpensesitincursorpaymentsitmakesonbehalfoftheCompanyGroup(includingsalary,bonus,incentivecompensation,employmentbenefitsandotheramountspaidtoanyPerson,includingaffiliatesoftheManagingMembertoperformservicesfortheCompanyGrouporfortheManagingMemberinthedischargeofitsdutiestotheCompanyGroup)and(ii)allotherexpensesallocabletotheCompanyGrouporotherwiseincurredbytheManagingMemberinconnectionwithoperatingtheCompanyGroup’sbusiness(includingexpensesallocatedtotheManagingMemberbyitsaffiliates).TheManagingMembershalldeterminetheexpensesthatareallocabletotheManagingMemberortheCompanyGroup.ReimbursementspursuanttothisSection6.6shallbeinadditiontoanyreimbursementtotheManagingMemberasaresultofindemnificationpursuanttoSection7.4.AnyallocationofexpensestotheCompanybyaffiliatesoftheManagingMemberinamannerconsistentwiththen-applicableaccountingandallocationmethodologiesgenerallypermittedbyFERCforrate-makingpurposes(orintheabsenceofthen-applicablemethodologiespermittedbyFERC,consistentwiththemost-recentlyapplicablemethodologies)andpastbusinesspracticesshallbedeemedtobefairandreasonabletotheCompany.

(c)TheManagingMembermayproposeandadoptonbehalfoftheCompanybenefitplans,programsandpractices(includingplans,programsandpracticesinvolvingtheissuanceofMembershipInterestsoroptionstopurchaseorrights,warrantsorappreciationrightsorphantomortrackinginterestsorothereconomicinterestsintheCompanyorrelatingtoMembershipInterests),orcausetheCompanytoissueMembershipInterestsorothersecuritiesinconnectionwith,orpursuantto,anybenefitplan,programorpracticemaintainedorsponsoredbytheManagingMemberoranyofitsaffiliatesineachcaseforthebenefitofemployees,officersanddirectorsoftheManagingMemberoranyofitsaffiliates,inrespectofservicesperformed,directlyorindirectly,forthebenefitoftheCompanyGroup.TheCompanyagreestoissueandselltotheManagingMemberoranyofitsaffiliatesanyMembershipInterestsorothersecuritiesthattheManagingMemberorsuchaffiliatesareobligatedtoprovidetoanyemployees,officersanddirectorspursuanttoanysuchbenefitplans,programsorpractices.ExpensesincurredbytheManagingMemberinconnectionwithanysuchplans,programsandpractices(includingthenetcosttotheManagingMemberorsuchaffiliatesofMembershipInterestsorothersecuritiespurchasedbytheManagingMemberorsuchaffiliates,fromtheCompanyorotherwise,tofulfilloptionsorawardsundersuchplans,programsandpractices)shallbereimbursedinaccordancewithSection6.6(b).AnyandallobligationsoftheManagingMemberunderanybenefitplans,programsorpracticesadoptedbytheManagingMemberaspermittedbythisSection6.6(c)shallconstituteobligationsoftheManagingMemberhereunderandshallbeassumedbyanytransfereeoforsuccessortoalloftheManagingMember’sMembershipInterest.

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(d)TheManagingMemberanditsaffiliatesmaychargeanymemberoftheCompanyGroupamanagementfeetotheextentnecessarytoallowtheCompanyGrouptoreducetheamountofanystatefranchiseorincometaxoranytaxbasedupontherevenuesorgrossmarginofanymemberoftheCompanyGroupifthetaxbenefitproducedbythepaymentofsuchmanagementfeeorfeesexceedstheamountofsuchfeeorfees.

ARTICLEVII.LIMITATIONSONLIABILITYANDINDEMNITY

7.1LimitationonLiability.Tothefullestextentpermittedbyapplicablelaw(includingtheAct),noneof(a)theManagingMember(ineachofitscapacitiesasaMemberandamanageroftheCompany),(b)anyPersonwhoisorwasanaffiliateoftheManagingMember,(c)anyPersonwhoisorwasamanager,managingmember,generalpartner,director,officer,employee,agent,fiduciaryortrusteeofanymemberoftheCompanyGrouportheManagingMember(including,fortheavoidanceofdoubt,anyPersonservinginanysuchcapacitiespriortothedateofthisAgreement),(d)anyPersonwhoisorwasservingattherequestoftheManagingMemberoranyaffiliateoftheManagingMemberasamanager,managingmember,generalpartner,director,officer,employee,agent,fiduciaryortrusteeofanotherPersonowingafiduciarydutytoanymemberoftheCompanyGroup;providedthattheforegoingshallnotincludeanyPersonwhoprovides,onafee-for-servicesbasis,trustee,fiduciaryorcustodialservices,(e)anyPersonwhocontrolstheManagingMemberor(f)anyPersontheManagingMembershalldesignateasaCoveredPersonforpurposesofthisAgreement(anysuchPerson,a“CoveredPerson”)shallbeliableinanywaytotheCompanyortheManagingMemberforanyactoromissiontakenoromittedpursuanttothisAgreementoringoodfaithrelianceontheprovisionsofthisAgreementunlesssuchactoromissionwastakenoromittedfraudulentlyorconstitutedgrossnegligenceorwillfulmisconduct.

7.2Duties.ThisAgreementisnotintendedto,anddoesnot,createorimposeanyfiduciarydutyonanyCoveredPerson,andeachMemberherebywaivesanyandallfiduciarydutiesthat,absentsuchwaiver,maybeimpliedbyapplicablelaw,andindoingso,acknowledgesandagreesthatthedutiesandobligationofeachCoveredPersontoeachotherandtotheCompanyareonlyasexpresslysetforthinthisAgreement.TheprovisionsofthisAgreement,totheextentthattheyrestrictthedutiesandliabilitiesofaCoveredPersonotherwiseexistingatlaworinequity,areagreedbyeachMembertoreplacesuchotherdutiesandliabilitiesofsuchCoveredPerson.Withoutlimitingtheforegoing,wheneverinthisAgreementtheManagingMember(ineachofitscapacitiesasaMemberandamanageroftheCompany)ispermittedorrequiredtomakeadecisionordetermination,theManagingMembershallbeentitledtoconsideronlysuchinterestsandfactorsasitdesires,includingitsowninterests,andshallhavenodutyorobligationtogiveanyconsiderationtoanyinterestoforfactorsaffectingtheCompanyoranyotherPerson.

7.3NoLiabilityforCompanyObligations.ExceptasotherwiserequiredbytheAct,thedebts,obligations,andliabilitiesoftheCompany,whetherarisingincontract,tortorotherwise,shallbesolelythedebts,obligationsandliabilitiesoftheCompany,andtheManagingMember(ineachofitscapacitiesasaMemberandamanageroftheCompany)andeachotherMembershallhavenopersonalliabilityforanysuchdebtsobligations,orliabilitiesoftheCompanysolelybyreasonofbeingaMemberorparticipatinginthemanagementoftheCompany.

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7.4Indemnification.

(a)TothefullestextentpermittedbylawbutsubjecttothelimitationsexpresslyprovidedinthisAgreement,allCoveredPersonsshallbeindemnifiedandheldharmlessbytheCompanyfromandagainstanyandalllosses,claims,damages,liabilities,jointorseveral,expenses(includinglegalfeesandexpenses),judgments,fines,penalties,interest,settlementsorotheramountsarisingfromanyandallthreatenedpendingorcompletedclaims,demands,actions,suitsorproceedings,whethercivil,criminal,administrativeorinvestigative,andwhetherformalorinformalandincludingappeals,inwhichanyCoveredPersonmaybeinvolved,oristhreatenedtobeinvolved,asapartyorotherwise,byreasonofitsstatusasaCoveredPersonandacting(orrefrainingtoact)insuchcapacity;provided,thattheCoveredPersonshallnotbeindemnifiedandheldharmlesspursuanttothisAgreementiftherehasbeenafinalandnon-appealablejudgmententeredbyacourtofcompetentjurisdictiondeterminingthat,inrespectofthematterforwhichtheCoveredPersonisseekingindemnificationpursuanttothisAgreement,theCoveredPersonactedinbadfaithorengagedinfraud,willfulmisconductor,inthecaseofacriminalmatter,actedwithknowledgethattheCoveredPerson’sconductwasunlawful.AnyindemnificationpursuanttothisSection7.4shallbemadeonlyoutoftheassetsoftheCompany,itbeingagreedthattheMembersshallnotbepersonallyliableforsuchindemnificationandshallhavenoobligationtocontributeorloananymoniesorpropertytotheCompanytoenableittoeffectuatesuchindemnification.

(b)Tothefullestextentpermittedbylaw,expenses(includinglegalfeesandexpenses)incurredbyaCoveredPersonwhoisindemnifiedpursuanttoSection7.4(a)inappearingat,participatinginordefendinganyclaim,demand,action,suitorproceedingshall,fromtimetotime,beadvancedbytheCompanypriortoafinalandnon-appealablejudgmententeredbyacourtofcompetentjurisdictiondeterminingthat,inrespectofthematterforwhichtheCoveredPersonisseekingindemnificationpursuanttothisSection7.4,theCoveredPersonisnotentitledtobeindemnifieduponreceiptbytheCompanyofanyundertakingbyoronbehalfoftheCoveredPersontorepaysuchamountifitshallbeultimatelydeterminedthattheCoveredPersonisnotentitledtobeindemnifiedasauthorizedbythisSection7.4.

(c)TheindemnificationprovidedbythisSection7.4shallbeinadditiontoanyotherrightstowhichaCoveredPersonmaybeentitledunderanyagreement,pursuanttoanywrittenapprovaloftheManagingMember,asamatteroflaw,inequityorotherwise,bothastoactionsintheCoveredPerson’scapacityasaCoveredPersonandastoactionsinanyothercapacity,andshallcontinueastoaCoveredPersonwhohasceasedtoserveinsuchcapacityandshallinuretothebenefitoftheheirs,successors,assignsandadministratorsoftheCoveredPerson.

(d)TheCompanymaypurchaseandmaintaininsurance,onbehalfoftheCoveredPersonsandsuchotherPersonsastheManagingMembershalldetermine,againstanyliabilitythatmaybeassertedagainst,orexpensethatmaybeincurredby,suchPersoninconnectionwiththeCompany’sactivitiesorsuchPerson’sactivitiesonbehalfoftheCompany,regardlessofwhethertheCompanywouldhavethepowertoindemnifysuchPersonagainstsuchliabilityundertheprovisionsofthisAgreement.

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(e)ForpurposesofthisArticleVII,theCompanyshallbedeemedtohaverequestedaCoveredPersontoserveasfiduciaryofanemployeebenefitplanwhenevertheperformancebyitofitsdutiestotheCompanyalsoimposesdutieson,orotherwiseinvolvesservicesby,ittotheplanorparticipantsorbeneficiariesoftheplan;excisetaxesassessedonaCoveredPersonwithrespecttoanemployeebenefitplanpursuanttoapplicablelawshallconstitute“fines”withinthemeaningofSection7.4(a),andactiontakenoromittedbyitwithrespecttoanyemployeebenefitplanintheperformanceofitsdutiesforapurposereasonablybelievedbyittobeinthebestinterestoftheparticipantsandbeneficiariesoftheplanshallbedeemedtobeforapurposethatisinthebestinterestsoftheCompany.

(f)ACoveredPersonshallnotbedeniedindemnificationinwholeorinpartunderthisSection7.4becausetheCoveredPersonhadaninterestinthetransactionwithrespecttowhichtheindemnificationappliesifthetransactionwasotherwisepermittedbythetermsofthisAgreement.

(g)TheprovisionsofthisSection7.4areforthebenefitoftheCoveredPersonsandtheirheirs,successors,assigns,executorsandadministratorsandshallnotbedeemedtocreateanyrightsforthebenefitofanyotherPersons.

(h)Noamendment,modificationorrepealofthisSection7.4oranyprovisionhereofshallinanymannerterminate,reduceorimpairtherightofanypast,presentorfutureCoveredPersontobeindemnifiedbytheCompany,northeobligationsoftheCompanytoindemnifyanysuchCoveredPersonunderandinaccordancewiththeprovisionsofthisSection7.4asineffectimmediatelypriortosuchamendment,modificationorrepealwithrespecttoclaimsarisingfromorrelatingtomattersoccurring,inwholeorinpart,priortosuchamendment,modificationorrepeal,regardlessofwhensuchclaimsmayariseorbeasserted.

7.5Priority.EachCoveredPersonmayhavecertainrightstoindemnificationoradvancementofexpensesprovidedbyoronbehalfoftheManagingMemberoritsaffiliates(collectively,the“MemberIndemnitors”).NotwithstandinganythingtothecontraryinthisAgreement,tothefullestextentpermittedbyapplicablelaw:(a)theCompanyshallbetheindemnitoroffirstresort(i.e.,theCompany’sobligationstoeachCoveredPersonareprimaryandanyobligationoftheMemberIndemnitorstoprovideindemnificationoradvancementofexpensesforthesamelossesincurredbyeachCoveredPersonaresecondary),(b)theCompanyshalladvancethefullamountofexpensesincurredbyeachCoveredPersonandshallbeliableforthefullamountoflossestotheextentlegallypermittedandasrequiredbythisAgreement,withoutregardtoanyrightseachCoveredPersonmayhaveagainsttheMemberIndemnitors,and(c)theCompanyandeachMemberirrevocablywaive,relinquishandreleasetheMemberIndemnitorsfromanyandallclaimsagainsttheMemberIndemnitorsforcontribution,subrogationoranyotherrecoveryofanykindinrespectthereof.Notwithstandinganythinghereintothecontrary,tothefullestextentpermittedbyapplicablelaw,noadvancementorpaymentbytheMemberIndemnitorsfororonbehalfofanyCoveredPersonwithrespecttoanyclaimforwhichsuchCoveredPersonhassoughtindemnificationoradvancementofexpensesfromtheCompanywillaffecttheforegoingandtheMemberIndemnitorsshallhavearightofcontributionand/orbesubrogatedtotheextentofsuchadvancementorpaymenttoalloftherightsofrecoveryofsuchCoveredPersonagainsttheCompany.TheMemberIndemnitorsareexpressintendedthirdpartybeneficiariesofthetermsofthisSection7.5.

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ARTICLEVIII.TRANSFERABILITY

8.1TransfersGenerally.AnyMembermaytransfer(includingbysale,encumbrance,assignmentorotherdisposition)allofitsMembershipInterest(oranyportionthereof)onlywiththepriorwrittenconsentoftheManagingMember.AtransfereeofsuchMembershipInterest(orsuchportionthereof)shallbeadmittedtotheCompanyasaMembereffectiveuponthelaterof(a)thedueexecutionofajoinderorcounterparttothisAgreement(asamendedinaccordancewithSection4.2)and(b)thetransferofsuchMembershipInterest(orsuchportionthereof)tosuchtransferee.

8.2TransferoftheManagingMember’sEntireMembershipInterest.UponatransferbytheManagingMemberofall(butnotanyportion)ofitsMembershipInterestandfollowingtheadmissionofthetransfereetotheCompanyinaccordanceherewith,suchtransferringManagingMembershallceasetobetheManagingMember,andthetransfereeshallbecometheManagingMemberandhaveallrightsandobligationsoftheManagingMembersetforthherein.

ARTICLEIX.DISSOLUTIONANDTERMINATION

9.1Dissolution.TheCompanyshallbedissolvedupontheoccurrenceofanyofthefollowingevents:

(a)pursuanttoanyrequirementoftheAct;or

(b)bythewrittenstatementoftheManagingMember.

9.2EffectofDissolution.Upondissolution,theCompanyshallceasetocarryonitsbusiness,exceptaspermittedbytheAct.

9.3WindingUp,LiquidationandDistributionofAssets.

(a)UpondissolutionoftheCompany,nofurtherbusinessshallbeconductedexceptforthetakingofsuchactionasshallbenecessaryforthewindingupoftheaffairsoftheCompanyinanorderlymanner(includingthedistributionofitsassetstotheMembers)pursuanttotheprovisionsofthisSection9.3andtheAct.TheManagingMembershallactastheLiquidatingTrustee,or,iftheManagingMemberisunabletoactasLiquidatingTrustee,theManagingMembershallappointaLiquidatingTrustee.TheLiquidatingTrusteeshallhavefullauthoritytowinduptheaffairsoftheCompanyandtomakedistributionsasprovidedherein.

(b)UpondissolutionoftheCompany,theLiquidatingTrusteeshalleitherselltheassetsoftheCompanyatthebestpriceavailable,ortheLiquidatingTrusteemaydistributetotheMembers,onaproratabasisinaccordancewiththeirrespectiveMembershipInterests,alloranyportionoftheCompany’sassetsinkind.

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(c)AllassetsoftheCompanyshallbeappliedanddistributedbytheLiquidatingTrusteeinthefollowingorder:

(i)first,tothecreditorsoftheCompany,totheextentotherwisepermittedbyapplicablelaw,insatisfactionofliabilitiesoftheCompany(whetherbypaymentorthemakingofreasonableprovisionforpaymentthereof);

(ii)second,tosettingupthereservesthattheLiquidatingTrusteemaydeemreasonablynecessary,appropriateoradvisableforcontingentorunforeseenliabilitiesorobligationsoftheCompany;and

(iii)third,totheMembersonaproratabasisinaccordancewiththeirrespectiveMembershipInterests.

9.4CertificateofCancellation.UponcompletionofthewindingupoftheaffairsoftheCompany,theManagingMemberoritsdesigneeshallfileadulyexecutedcertificateofcancellationwiththeSecretaryofStateoftheStateofDelawareinaccordancewiththeAct.

ARTICLEX.MISCELLANEOUSPROVISIONS

10.1ApplicationofDelawareLaw.ThisAgreementshallbegovernedby,andconstruedinaccordancewith,thelawoftheStateofDelaware.

10.2Amendments.AnyamendmenttothisAgreementshallbemadeinawritingsignedbytheManagingMember.

10.3Severability.IfanyprovisionofthisAgreementortheapplicationthereoftoanycircumstanceshallbeinvalid,illegalorunenforceabletoanyextent,theremainderofthisAgreementandtheapplicationthereofshallnotbeaffectedandshallbeenforceabletothefullestextentpermittedbyapplicablelaw.

10.4Creditors.NoneoftheprovisionsofthisAgreementshallbeforthebenefitoforenforceablebyanycreditorsoftheCompany.

[Signaturepagefollows.]

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IN WITNESS WHEREOF, theManagingMemberhasexecutedthisAgreementasofthedatefirstwrittenabove.

THIRD COAST MIDSTREAM HOLDINGS, LLC,aDelawarelimitedliabilitycompany

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoLimitedLiabilityCompanyAgreement-ThirdCoastMidstream,LLC]

Exhibit A

Members; Units

Member Units ThirdCoastMidstreamHoldings,LLC 80,266,451

ExhibitAtoLimitedLiabilityCompanyAgreement-ThirdCoastMidstream,LLC

Exhibit B

OfficersName OfficeMatthewRowland PresidentandChiefExecutiveOfficer

RyanRupe SeniorVicePresidentandChiefComplianceOfficer

ReneCasadaban SeniorVicePresidentandChiefOperatingOfficer

LouisDorey SeniorVicePresident-BusinessDevelopment

ChristopherDial SeniorVicePresidentandGeneralCounsel

NadineMoustafa VicePresidentandAssociateGeneralCounsel

StephenCiupak VicePresident-Finance

KarenAcree VicePresidentandChiefAccountingOfficer

RobertGrayIII VicePresident-CommercialServices

BrianNielson VicePresident-Operations

DilshadKasmani AssociateGeneralCounselandAssistantCorporateSecretary

LeisaMunoz AssistantCorporateSecretary

ExhibitBtoLimitedLiabilityCompanyAgreement-ThirdCoastMidstream,LLC

Exhibit 3.5

StateofDelawareSecretaryofState

DivisionofCorporationsDelivered08:04AM07/23/2019FILED08:07AM07/23/2019

SR20196098668–FileNumber4721359

Execution Version

CERTIFICATE OF MERGER OFANCHOR MIDSTREAM ACQUISITION, LLC

(a Delaware limited liability company)WITH AND INTO

THIRD COAST MIDSTREAM HOLDINGS, LLC(a Delaware limited liability company)

July23,2019

PursuanttoSection18-209oftheDelawareLimitedLiabilityCompanyAct(the“DLLCA”),ThirdCoastMidstreamHoldings,LLC,aDelawarelimitedliabilitycompany(the“Company”),herebycertifiestothefollowinginformationrelatingtothemergerofAnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany,withandintotheCompany(the“Merger”):

FIRST:

Thename,typeofentityandstateoforganizationofeachoftheconstituententities(the“ConstituentEntities”)totheMergerisasfollows:

Name Entity Type StateThirdCoastMidstreamHoldings,LLC LimitedLiabilityCompany Delaware

AnchorMidstreamAcquisition,LLC LimitedLiabilityCompany Delaware

SECOND:

TheAgreementandPlanofMergerhasbeenapprovedandexecutedbyeachoftheConstituentEntitiesinaccordancewithSection18-209oftheDLLCA.

THIRD:

TheCompanyshallbetheentitysurvivingtheMerger(the“SurvivingEntity”),andthenameoftheSurvivingEntityshallremain“ThirdCoastMidstreamHoldings,LLC.”

FOURTH:

ThecertificateofformationoftheCompanyasineffectimmediatelypriortotheeffectivenessofthisCertificateofMergershallbethecertificateofformationoftheSurvivingEntity,withoutanychangesoramendmentstheretoasaresultoftheMerger.

FIFTH:

TheAgreementandPlanofMergerisonfileat2103CityWestBlvd.,Building4,Suite800,Houston,Texas77042,aplaceofbusinessoftheSurvivingEntity,andacopythereofwillbefurnishedbytheSurvivingEntity,onrequestandwithoutcost,toanymemberof,orpersonholdinganinterestin,eitheroftheConstituentEntities.

SIXTH:

ThisCertificateofMergerandtheMergershallbecomeeffectiveatthetimethisCertificateofMergerisfiledwiththeSecretaryofStateoftheStateofDelaware.

[Signaturepagefollows.]

IN WITNESS WHEREOF, theSurvivingEntityhasexecutedanddeliveredthisCertificateofMergerasofthedatefirstwrittenabove.

THIRD COAST MIDSTREAM HOLDINGS, LLC

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoCertificateofMerger]

Exhibit 3.6

StateofDelawareSecretaryofState

DivisionofCorporationsDelivered08:04AM07/23/2019FILED08:05AM07/23/2019

SR20196098666–FileNumber4720325

Execution Version

STATE OF DELAWARECERTIFICATE OF CONVERSION

FROM A LIMITED PARTNERSHIP TO ALIMITED LIABILITY COMPANY

PURSUANT TO SECTION 18-214 OF THE LIMITED LIABILITY COMPANY ACT

July23,2019

PursuanttotheprovisionsofSection18-214oftheDelawareLimitedLiabilityCompanyAct(the“LLCAct”),AmericanMidstreamPartners,LP,aDelawarelimitedpartnership(the“Partnership”),herebyexecutesthisCertificateofConversion(this“Certificate”)forthepurposeofconverting(the“Conversion”)thePartnershiptoalimitedliabilitycompany(the“Company”)and,inconnectiontherewith,certifiesasfollows:

1. ThejurisdictionwherethePartnershipwasfirstformedistheStateofDelaware.

2. ThejurisdictionofthePartnershipimmediatelypriortofilingthisCertificateistheStateofDelaware.

3. ThedatethePartnershipwasfirstformedisAugust20,2009.

4. ThenameofthePartnershipimmediatelypriortofilingthisCertificateis“AmericanMidstreamPartners,LP”.

5. ThenameoftheCompanyassetforthintheCertificateofFormationis“ThirdCoastMidstream,LLC”.

6. ThiscertificateofconversionshallbecomeeffectiveuponfilingwiththeOfficeoftheSecretaryofStateoftheStateofDelaware.

[Signaturepagefollows.]

IN WITNESS WHEREOF, thePartnershiphasexecutedthisCertificateasofthedatefirstwrittenabove.

AMERICAN MIDSTREAM PARTNERS, LP ,aDelawarelimitedpartnership

By: AMERICANMIDSTREAMGP,LLC,itsgeneralpartner

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoCertificateofConversion]

Exhibit 10.1

Execution Version

REDEMPTION AGREEMENT

July18,2019

ThisRedemptionAgreement(this“Agreement”),datedasofJuly18,2019(the“EffectiveDate”),isenteredintobyandbetweenAmericanMidstreamGP,LLC,aDelawarelimitedliabilitycompany(the“Holder”),andAmericanMidstreamPartners,LP,aDelawarelimitedpartnership(the“Partnership”).TheHolderandthePartnershiparesometimeshereinaftereachreferredtoasa“Party”andcollectivelyasthe“Parties”.CapitalizedtermsusedbutnototherwisedefinedhereinshallhavethemeaningsgiventosuchtermsintheMergerAgreement(asdefinedbelow).

WHEREAS,onMarch17,2019,AnchorMidstreamAcquisition,LLC,aDelawarelimitedliabilitycompany(“AnchorAcquisition”),HighPointInfrastructurePartners,LLC,aDelawarelimitedliabilitycompany,thePartnership,theHolderandAnchorMidstreamMergerSub,LLC,aDelawarelimitedliabilitycompany(“MergerSub”),enteredintothatcertainAgreementandPlanofMerger(asmaybeamended,restatedormodifiedfromtimetotime,the“MergerAgreement”),pursuanttowhichMergerSubwillmergewithandintothePartnershipwiththePartnershipsurvivingthemergerasasubsidiaryoftheHolderandAnchorAcquisition(the“Merger”),onthetermsandsubjecttotheconditionssetforththerein;

WHEREAS,theHolderholds100%oftheissuedandoutstandingNotionalGeneralPartnerUnitsofthePartnership(the“SubjectUnits”);

WHEREAS,inconnectionwiththeMerger,thePartnershipdesirestopurchase,acquire,acceptandredeemfromtheHolder,andtheHolderdesirestosell,assign,transferandconveytothePartnership,alloftheSubjectUnits,effectiveasofthedatehereof(the“Redemption”),inexchangefortheRedemptionConsideration(asdefinedbelow);and

WHEREAS,followingtheRedemption,theHolderwillretainanon-economicgeneralpartnerinterestinthePartnershipandwillremainthesolegeneralpartnerofthePartnership.

NOWTHEREFORE,inconsiderationofthepromisessetforthhereinandothergoodandvaluableconsideration,thereceiptandsufficiencyofwhichisherebyacknowledged,thePartiesagreeasfollows:

1. Redemption.OnandsubjecttothetermsandconditionsofthisAgreement,effectiveasoftheEffectiveDate,theHoldershallsell,convey,

assign,transferanddelivertothePartnership,theSubjectUnits,freeandclearofallLiens(otherthanpursuanttoapplicablelawandthePartnershipAgreement),andthePartnershipshallpurchase,acquire,acceptandredeemtheSubjectUnits,fortheRedemptionConsideration.

2. PaymentofRedemptionConsideration.The“RedemptionConsideration”shallconsistof980,889CommonUnits.TheRedemptionConsiderationshallbepaidordeliveredtotheHolderontheEffectiveDate.

3. Redemption.OnandsubjecttothetermsofthisAgreement,effectiveasoftheEffectiveDate,theHolderirrevocablyacceptstheRedemptionConsiderationincompleteredemptionoftheSubjectUnits.theSubjectUnitsshall,effectiveasoftheEffectiveDate,befullyandirrevocablyredeemed,terminated,cancelledandbeofnofurtherforceandeffect,withoutfurtheractiononbehalfofanyPerson;provided,however,fortheavoidanceofdoubt,thattheHoldershallretainanon-economicgeneralpartnerinterestinthePartnershipandwillremainthesolegeneralpartnerofthePartnership.

4. Release.Inexchangeforthebenefitsandundertakingsdescribedhereinandforothergoodandvaluableconsideration,thereceiptandsufficiencyofwhichareherebyacknowledged,theHolder,ontheHolder’sownbehalfandonbehalfofalloftheHolder’ssuccessorsandassigns,effectiveasoftheEffectiveDate,fullyandforeverreleasesanddischargesthePartnershipandeachofitssubsidiariesandcurrentandfutureaffiliatesandeachofitsandtheirrespectivelimitedpartners,membersandmanagers,andeachoftheirrespectivecurrentandformerequityholders,directors,officers,employees,partners,members,trustees,attorneys,representatives,fiduciariesand/oragents,bothindividuallyandintheirofficialcapacities(collectively,the“ReleasedParties”),fromanyandallclaims,suits,controversies,actions,causesofaction,cross-claims,counter-claims,demands,debts,compensatorydamages,liquidateddamages,punitiveorexemplarydamages,otherdamages,claimsforcostsandattorneys’fees,orliabilitiesofanynaturewhatsoever,bothpastandpresentandwhetherknownorunknown,suspected,orclaimedagainstthePartnershiporanyoftheotherReleasedPartieswhichtheHolderoranyoftheHolder’sheirs,executors,administratorsorassigns,mayhavearisingoutoforrelatedtoevents,facts,conditionsorcircumstancesexistingorarisingatorpriortotheEffectiveDatewhichariseinconnectionwithorarerelatedto(a)theRedemptionor(b)anyequitysecuritiesoforotherinterestsinthePartnershiporanyofitsaffiliatesheldbytheHolderpriortotheEffectiveDate.

5. RepresentationsoftheHolder.TheHolderrepresentsandwarrantstothePartnershipthat:

(a) TheHolderisalimitedliabilitycompanydulyorganized,validlyexistingandingoodstandingunderthelawsoftheStateofDelawareandhasallrequisitepowerandauthoritytoenterintothisAgreementandtocarryoutthetransactionscontemplatedherein.ThisAgreementhasbeendulyauthorized,executedanddeliveredbytheHolderandisalegal,validandbindingobligationoftheHolder,enforceableagainsttheHolderinaccordancewithitsterms,subjecttobankruptcy,insolvency,fraudulenttransfer,reorganization,moratoriumandsimilarlawsofgeneralapplicabilityrelatingtooraffectingcreditors’rightsandtogeneralequityprinciples.

(b) TheHolderistheowneroftheSubjectUnits,freeandclearofanyliability,Lien(otherthanpursuanttoapplicablelawandthe

PartnershipAgreement),assessment,restriction,obligation,claim,chargeoroptionofanykindwhatsoever,andhasfullrightandauthoritytoenterintothisAgreement.

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(c) ExceptforthepaymentsdueunderthisAgreement,thePartnershipisnotindebted,directlyorindirectly,totheHolder,inanyamountwhatsoever.

(d) TheHolderhasmetwithorhashadtheopportunitytomeetwiththeHolder’slegaland/orbusinessadvisorsconcerningthetermsofthisAgreement.

(e) TheHolderunderstandsthatthetruthandaccuracyoftheforegoingrepresentationsandwarrantiesarebeingrelieduponbythe

PartnershiptoinduceittoenterintothisAgreement,andtheHolderintendsthatthePartnershiprelyonsuchrepresentationsandwarranties.

6. RepresentationsofthePartnership.ThePartnershiprepresentsandwarrantstotheHolderasfollows:

(a) ThePartnershipisalimitedpartnershipdulyorganized,validlyexistingandingoodstandingunderthelawsoftheStateofDelawareandhasallrequisitepowerandauthoritytoenterintothisAgreementandtocarryoutthetransactionscontemplatedherein.

(b) ThisAgreementhasbeendulyauthorized,executedanddeliveredbythePartnershipandisalegal,validandbindingobligationofthePartnership,enforceableagainstthePartnershipinaccordancewithitsterms,subjecttobankruptcy,insolvency,fraudulenttransfer,reorganization,moratoriumandsimilarlawsofgeneralapplicabilityrelatingtooraffectingcreditors’rightsandtogeneralequityprinciples.

7. SurvivalofRepresentationsandWarranties.(i)Allagreements,covenants,representationsandwarrantiescontainedhereinshallsurvivetheconsummationoftheRedemptionoftheHolder’sSubjectUnitsandthetransactionscontemplatedherebyandshallbebindinguponandinuretothebenefitofthePartiesandtheirrespectiveheirs,estates,successorsandpermittedassignsand(ii)allcovenantsandagreementscontainedhereinshallsurviveuntilperformed.

8. Miscellaneous.

(a) EachPartywill,uponrequestoftheotherParty,takesuchfurtheraction(includingtheexecutionanddeliveryofanyadditional

documents)reasonablydeemedbysuchrequestingPartytobenecessaryordesirabletocompleteorevidencethetransactionscontemplatedbythisAgreement.

(b) ThePartieshaveeachseparatelyhadtheopportunitytoconsultwithcounselandhavereviewed,negotiatedandadoptedthisAgreement

asthejointagreementandunderstandingoftheParties,andthelanguageusedinthisAgreementshallbedeemedtobethelanguagechosenbythePartiestoexpresstheirmutualintent,andnoruleofstrictconstructionshallbeappliedagainstanyperson.

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(c) ThisAgreementconstitutestheentireagreementofthePartieswithrespecttothesubjectmatterhereofandsupersedesallpriorwrittenandoralnegotiations,agreementsandunderstandingswithrespecthereto.

(d) ThisAgreementmaybeamended,modified,orterminatedonlywiththewrittenconsentofbothParties.Waiverofabreachofany

provisionofthisAgreementshallnotbebindingunlessinwritingandsignedbytheParties,andanysuchwaivershallnotbeconstruedtobeawaiverofanysubsequentbreachofthesameoranyotherprovisionofthisAgreement.

(e) TotheextentthatanyprovisionofthisAgreementisdeterminedtobeinvalidorunenforceable,theinvalidorunenforceableportionofsuchprovisionshallbedeletedfromthisAgreement,andthevalidityandenforceabilityoftheremainderofsuchprovisionandofthisAgreementshallbereformed,construedandenforcedsoastogiveeffecttotheoriginalintentofthisAgreementtothemaximumextentpermittedbyapplicableLaw.

(f) ThisAgreementshallbindandinuretothebenefitoftherespectivesuccessorsandpermittedassignsoftheParties.NoPartymayassignthisAgreementoranyparthereofwithoutthepriorwrittenconsentoftheotherParty;provided,thatthePartnershipmayassignthisAgreementoranyparthereofanditsrightsandobligationshereunder,inwholeorinpart,toanyaffiliateofthePartnershipwithoutthepriorconsentoftheHolder.

(g) NothinginthisAgreement,expressorimplied,isintendedorshallbeconstruedtogiveanypersonotherthanthePartiesortheirrespectivesuccessorsorassignsanylegalorequitableright,remedyorclaimunderorinrespectofanyagreementoranyprovisioncontainedherein;providedthat,notwithstandingtheforegoing,(i)theReleasedPartiesareintendedtobethirdpartybeneficiariesof,andmayenforce,Section4and(ii)theNon-RecoursePersons(asdefinedbelow)areintendedtobebeneficiariesof,andmayenforce,Section8(j).

(h) ThisAgreementshallbegovernedandconstruedinaccordancewiththelawsoftheStateofDelawarewithoutregardtoconflictoflawprovisionsthatmaygiverisetotheapplicationofthesubstantivelawsofanotherjurisdiction.

(i) AnyProceedingbasedupon,arisingoutoforrelatedtothisAgreementorthetransactionscontemplatedherebyshallbebroughtinfederalandstatecourtslocatedintheStateofDelaware,andeachofthePartiesirrevocablysubmitstotheexclusivejurisdictionofeachsuchcourtinanysuchProceeding,waivesanyobjectionitmaynoworhereafterhavetopersonaljurisdiction,venueortoconvenienceofforum,agreesthatallclaimsinrespectoftheProceedingshallbeheardanddeterminedonlyinanysuchcourt,andagreesnottobringanyProceedingarisingoutoforrelatingto

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thisAgreementorthetransactionscontemplatedherebyinanyothercourt.NothinghereincontainedshallbedeemedtoaffecttherightofanyPartytoserveprocessinanymannerpermittedbyLawortocommenceProceedingsorotherwiseproceedagainstanyotherPartyinanyotherjurisdiction,ineachcase,toenforcejudgmentsobtainedinanyProceedingbroughtpursuanttothisSection8(i).EACHOFTHEPARTIESHEREBYIRREVOCABLYWAIVESANYANDALLRIGHTTOTRIALBYJURYINANYPROCEEDINGBASEDUPON,ARISINGOUTOFORRELATEDTOTHISAGREEMENTORTHETRANSACTIONSCONTEMPLATEDHEREBY.

(j) ExcepttotheextentanamedPartytothisAgreement,thePartiesacknowledgeandagreethatnopast,presentorfuturedirector,manager,officer,employee,incorporator,member,partner,equityholder,agent,attorney,representative,affiliateorfinancingsourceofanyofthePartiestothisAgreement(each,a“Non-RecoursePerson”),insuchcapacity,shallhaveanyliabilityorresponsibility(incontract,tortorotherwise)foranyliabilitiesofanyParty,asapplicable,underthisAgreementorforanyclaimbasedon,inrespectof,orbyreasonof,thetransactionscontemplatedherebyandthereby.ThisAgreementmayonlybeenforcedagainst,andanyclaimoractionbasedupon,arisingoutof,orrelatedtothisAgreement,orthenegotiation,executionorperformanceofthisAgreement,mayonlybebroughtagainsttheentitiesthatareexpresslynamedasPartiesandthenonlywithrespecttothespecificobligationssetforthhereinwithrespecttosuchParty.TheNon-RecoursePersonsareintendedtobethirdpartybeneficiarieshereunder.

(k) ThisAgreementmaybeexecutedinoneormorecounterparts(includingbyelectronictransmission),eachofwhichshallbedeemedtobeanoriginalandallofwhich,whentakentogether,shallbedeemedtoconstituteoneandthesameagreement.

[Signaturepagefollows.]

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IN WITNESS WHEREOF ,thePartieshavecausedthisAgreementtobeexecutedanddeliveredasofthedatefirstwrittenabove.

PARTNERSHIP:

AMERICAN MIDSTREAM PARTNERS, LP

By: AMERICANMIDSTREAMGP,LLC,itsgeneralpartner

By: /s/LouisJ.DoreyName: LouisJ.DoreyTitle:

InterimPresidentandChiefExecutiveOfficer

HOLDER:

AMERICAN MIDSTREAM GP, LLC

By: HighPointInfrastructurePartners,LLC,itsmajorityClassAMember

By: /s/DanielR.ReversName: DanielR.ReversTitle: President

[SignaturePagetoRedemptionAgreement]