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  <xsd:element name="PipelineLossAllowanceCrudeOilContractNetShortPositionMember" id="pagp_PipelineLossAllowanceCrudeOilContractNetShortPositionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PipelineLossAllowanceCrudeOilLongCallOptionMember" id="pagp_PipelineLossAllowanceCrudeOilLongCallOptionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" id="pagp_DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCoverageRatioDebtToEBITDAMaximum" id="pagp_DebtInstrumentCoverageRatioDebtToEBITDAMaximum" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepreciationDepletionAmortizationAndImpairment" id="pagp_DepreciationDepletionAmortizationAndImpairment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionEquivalentRightPayments" id="pagp_DistributionEquivalentRightPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionEquivalentRightsCashPayments" id="pagp_DistributionEquivalentRightsCashPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionThresholdForParticipationInDistributions" id="pagp_DistributionThresholdForParticipationInDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionVestingThresholdOneMember" id="pagp_DistributionVestingThresholdOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionVestingThresholdThreeMember" id="pagp_DistributionVestingThresholdThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionVestingThresholdTwoMember" id="pagp_DistributionVestingThresholdTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionsAndExcessOverMinimumQuarterlyDistributionDomain" id="pagp_DistributionsAndExcessOverMinimumQuarterlyDistributionDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionsAndExcessOverMinimumQuarterlyDistributionsAxis" id="pagp_DistributionsAndExcessOverMinimumQuarterlyDistributionsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DocumentEntityInformationAbstract" id="pagp_DocumentEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmissionReductionCreditsMember" id="pagp_EmissionReductionCreditsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EnvironmentalRemediationCashExpendituresPeriodInYears" id="pagp_EnvironmentalRemediationCashExpendituresPeriodInYears" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityAwardsMember" id="pagp_EquityAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationPlanClassBUnitsOfPlainsAAPLPMember" id="pagp_EquityBasedCompensationPlanClassBUnitsOfPlainsAAPLPMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EstimatedSizeOfRelease" id="pagp_EstimatedSizeOfRelease" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExpenseForWithholdingTaxes" id="pagp_ExpenseForWithholdingTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" id="pagp_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" id="pagp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" id="pagp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" id="pagp_FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FieldOperatingSegmentMember" id="pagp_FieldOperatingSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FiveForwardStartingThirtyYearInterestRateSwapMember" id="pagp_FiveForwardStartingThirtyYearInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FixedRateSeniorNotesMember" id="pagp_FixedRateSeniorNotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.03MaturingIn2013Member" id="pagp_ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.03MaturingIn2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.03Member" id="pagp_ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.03Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.04MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.04MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.06MaturingIn2015Member" id="pagp_ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.06MaturingIn2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03MaturingIn2013Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03MaturingIn2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.03Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.04MaturingIn2015Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.04MaturingIn2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsMaturingIn2013Member" id="pagp_ForeignExchangeForwardContractsMaturingIn2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" id="pagp_ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ForwardStartingInterestRateSwapMember" id="pagp_ForwardStartingInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FrontierPipelineCompanyMember" id="pagp_FrontierPipelineCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GainLossOnForeignCurrencyCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" id="pagp_GainLossOnForeignCurrencyCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="GainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" id="pagp_GainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="GainLossOnSaleOfLinefillAndBaseGas" id="pagp_GainLossOnSaleOfLinefillAndBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="GardendaleGatheringSystemAcquisitionMember" id="pagp_GardendaleGatheringSystemAcquisitionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelOneMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelThreeMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelFourMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelTwoMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GeneralPartnerDistributionIncludingIncentiveDistributionPercentage" id="pagp_GeneralPartnerDistributionIncludingIncentiveDistributionPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GeneralPartnerDistributionPercentage" id="pagp_GeneralPartnerDistributionPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GeneralPartnerIncentiveDistributionThreshold" id="pagp_GeneralPartnerIncentiveDistributionThreshold" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GoodwillPurchasePriceAccountingAndOtherAdjustments" id="pagp_GoodwillPurchasePriceAccountingAndOtherAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="GrantDateFairValueOfOutstandingClassBUnitsRollForward" id="pagp_GrantDateFairValueOfOutstandingClassBUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="HedgedTransactionsProbableOfNotOccurringMember" id="pagp_HedgedTransactionsProbableOfNotOccurringMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" id="pagp_IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndirectOwnershipInterestInEntityMember" id="pagp_IndirectOwnershipInterestInEntityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestExpenseHedgedInventory" id="pagp_InterestExpenseHedgedInventory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="InventoryByCategoryAbstract" id="pagp_InventoryByCategoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryCurrentAndNoncurrent" id="pagp_InventoryCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" id="pagp_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" id="pagp_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryRelatedDisclosuresAbstract" id="pagp_InventoryRelatedDisclosuresAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryTable" id="pagp_InventoryTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryVolumesCurrent" id="pagp_InventoryVolumesCurrent" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryVolumesLinefillAndBaseGas" id="pagp_InventoryVolumesLinefillAndBaseGas" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryVolumesNoncurrent" id="pagp_InventoryVolumesNoncurrent" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitCurrent" id="pagp_InventoryWeightedAveragePricePerUnitCurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" id="pagp_InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitNoncurrent" id="pagp_InventoryWeightedAveragePricePerUnitNoncurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="KempRiverPipelineReleaseMember" id="pagp_KempRiverPipelineReleaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LandAndOtherMember" id="pagp_LandAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LiabilitiesForOutstandingChecks" id="pagp_LiabilitiesForOutstandingChecks" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LiabilityAwardsMember" id="pagp_LiabilityAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LimitedPartnersUnitPricePerUnit" id="pagp_LimitedPartnersUnitPricePerUnit" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditAndCommercialPaperMember" id="pagp_LineOfCreditAndCommercialPaperMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AAPSeniorSecuredCreditAgreementMember" id="pagp_AAPSeniorSecuredCreditAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LinefillAndBaseGas" id="pagp_LinefillAndBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongPositionOnNaturalGasContractsMember" id="pagp_LongPositionOnNaturalGasContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongPowerPositionForPowerSupplyRequirementsContractsMember" id="pagp_LongPowerPositionForPowerSupplyRequirementsContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtWeightedAverageLife" id="pagp_LongTermDebtWeightedAverageLife" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermIncentivePlanMember" id="pagp_LongTermIncentivePlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermIncentivePlansMember" id="pagp_LongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermObligationsExcludedFromCalculationOfMaturities" id="pagp_LongTermObligationsExcludedFromCalculationOfMaturities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LossContingencyPenaltyOrFineAssessed" id="pagp_LossContingencyPenaltyOrFineAssessed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="MaintenanceCapital" id="pagp_MaintenanceCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="MarathonPetroleumCorporationMember" id="pagp_MarathonPetroleumCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaturityDateExtensionPeriod" id="pagp_MaturityDateExtensionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaximumAggregateCommonStockOfferPrice" id="pagp_MaximumAggregateCommonStockOfferPrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="MaximumPercentageParticipationForDistributionInExcessOfThreshold" id="pagp_MaximumPercentageParticipationForDistributionInExcessOfThreshold" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MembersEquityLineItems" id="pagp_MembersEquityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MembersEquityTable" id="pagp_MembersEquityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinorityInterestOwnershipSharesHeldByNoncontrollingOwners" id="pagp_MinorityInterestOwnershipSharesHeldByNoncontrollingOwners" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NGLMember" id="pagp_NGLMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NaturalGasMember" id="pagp_NaturalGasMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetCashPaidReceivedForTerminatedInterestRateAndForeignCurrencyHedgingInstruments" id="pagp_NetCashPaidReceivedForTerminatedInterestRateAndForeignCurrencyHedgingInstruments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetLongPositionOnCrudeOilDerivativeContractsMember" id="pagp_NetLongPositionOnCrudeOilDerivativeContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetLongPositionOnNaturalGasSwapsContractsMember" id="pagp_NetLongPositionOnNaturalGasSwapsContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetProceedsFromRepaymentsOfRevolvingCreditFacilities" id="pagp_NetProceedsFromRepaymentsOfRevolvingCreditFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetProceedsFromRepaymentsOfSeniorUnsecuredRevolvingCreditFacilities" id="pagp_NetProceedsFromRepaymentsOfSeniorUnsecuredRevolvingCreditFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" id="pagp_NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetProceedsFromRepaymentsOfSubsidiaryCreditAgreement" id="pagp_NetProceedsFromRepaymentsOfSubsidiaryCreditAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetShortSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" id="pagp_NetShortSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewAccountingPronouncementsAndChangesInAccountingPrinciplesLineItems" id="pagp_NewAccountingPronouncementsAndChangesInAccountingPrinciplesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewAccountingPronouncementsAndChangesInAccountingPrinciplesTable" id="pagp_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonOfficerEmployeeLongTermIncentiveTrackingUnitPlanMember" id="pagp_NonOfficerEmployeeLongTermIncentiveTrackingUnitPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" id="pagp_NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" id="pagp_NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDerivativesHeldWithCreditRiskRelatedContingentFeatures" id="pagp_NumberOfDerivativesHeldWithCreditRiskRelatedContingentFeatures" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfEnforcementActionsFiled" id="pagp_NumberOfEnforcementActionsFiled" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfEventsResultingInRelease" id="pagp_NumberOfEventsResultingInRelease" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfOneYearExtensionsOfRevolvingCreditFacility" id="pagp_NumberOfOneYearExtensionsOfRevolvingCreditFacility" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfTermLoans" id="pagp_NumberOfTermLoans" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfTerminatedInterestRateSwaps" id="pagp_NumberOfTerminatedInterestRateSwaps" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OccidentalPetroleumCorporationMember" id="pagp_OccidentalPetroleumCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OffsettingAssetsLiabilitiesLineItems" id="pagp_OffsettingAssetsLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OffsettingAssetsLiabilitiesTable" id="pagp_OffsettingAssetsLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrganizationAndBasisOfPresentationLineItems" id="pagp_OrganizationAndBasisOfPresentationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" id="pagp_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAcquisitionsIn2011Member" id="pagp_OtherAcquisitionsIn2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAcquisitionsMember" id="pagp_OtherAcquisitionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAgreementsMember" id="pagp_OtherAgreementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAssetsNoncurrentGross" id="pagp_OtherAssetsNoncurrentGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OtherConsolidatedEquityCompensationInformationAbstract" id="pagp_OtherConsolidatedEquityCompensationInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherEquityOfferingsMember" id="pagp_OtherEquityOfferingsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherLongTermAssetsMember" id="pagp_OtherLongTermAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherLongTermLiabilitiesMember" id="pagp_OtherLongTermLiabilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherNoncurrentLongTermDebt" id="pagp_OtherNoncurrentLongTermDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OtherNonoperatingIncomeExpenseMember" id="pagp_OtherNonoperatingIncomeExpenseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutstandingUnitsEarnedRollForward" id="pagp_OutstandingUnitsEarnedRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutstandingUnitsRollForward" id="pagp_OutstandingUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PAAContinuousOfferingProgramMember" id="pagp_PAAContinuousOfferingProgramMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PAAGPLLCMember" id="pagp_PAAGPLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGContinuousOfferingProgramMember" id="pagp_PNGContinuousOfferingProgramMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="May2013EquityDistributionAgreementMember" id="pagp_May2013EquityDistributionAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGGOBondTermLoansMember" id="pagp_PNGGOBondTermLoansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGTermLoanOneMember" id="pagp_PNGTermLoanOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGTermLoanTwoMember" id="pagp_PNGTermLoanTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGGeneralPartnerMember" id="pagp_PNGGeneralPartnerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGLongTermIncentivePlanAwardsMember" id="pagp_PNGLongTermIncentivePlanAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGMember" id="pagp_PNGMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGSeniorUnsecuredCreditFacilityMember" id="pagp_PNGSeniorUnsecuredCreditFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGSeniorUnsecuredRevolvingCreditFacilityMember" id="pagp_PNGSeniorUnsecuredRevolvingCreditFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAndDistributionLineItems" id="pagp_PartnersCapitalAndDistributionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAndDistributionsTable" id="pagp_PartnersCapitalAndDistributionsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalCommonUnitHolderUnitsOutstanding" id="pagp_PartnersCapitalCommonUnitHolderUnitsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PartsAndSuppliesMember" id="pagp_PartsAndSuppliesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PemexExploracionyProduccionMember" id="pagp_PemexExploracionyProduccionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsolidatedDelawareActionMember" id="pagp_ConsolidatedDelawareActionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsolidatedTexasActionMember" id="pagp_ConsolidatedTexasActionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsolidatedFederalActionMember" id="pagp_ConsolidatedFederalActionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageDistributionOfAvailableCash" id="pagp_PercentageDistributionOfAvailableCash" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfFaceValueAtWhichSeniorNotesAreSold" id="pagp_PercentageOfFaceValueAtWhichSeniorNotesAreSold" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PipelineTariffActivitiesTruckingAndRelatedRevenues" id="pagp_PipelineTariffActivitiesTruckingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PlainsAAPLPMember" id="pagp_PlainsAAPLPMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanGPLLCMember" id="pagp_PlainsAllAmericanGPLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPMember" id="pagp_PlainsAllAmericanPipelineLPMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsEagleFordPipelineLLCMember" id="pagp_PlainsEagleFordPipelineLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromTermLoan" id="pagp_ProceedsFromTermLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PropertyTaxAbatementMember" id="pagp_PropertyTaxAbatementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCosts" id="pagp_PurchasesAndRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCostsMember" id="pagp_PurchasesAndRelatedCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCostsPolicyTextBlock" id="pagp_PurchasesAndRelatedCostsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RainbowPipelineMember" id="pagp_RainbowPipelineMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RangelandPipelineReleaseMember" id="pagp_RangelandPipelineReleaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReceivablesLineItems" id="pagp_ReceivablesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReceivablesTable" id="pagp_ReceivablesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReconciliationOfOperatingProfitLossFromSegmentsToNetIncomeAttributableToParentTableTextBlock" id="pagp_ReconciliationOfOperatingProfitLossFromSegmentsToNetIncomeAttributableToParentTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionInIncentiveDistributionsAbstract" id="pagp_ReductionInIncentiveDistributionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionPerYearInIncentiveDistributionRightsAbstract" id="pagp_ReductionPerYearInIncentiveDistributionRightsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionPerYearInIncentiveDistributionRightsThereafter" id="pagp_ReductionPerYearInIncentiveDistributionRightsThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionPerYearInIncentiveDistributionRightsYearOne" id="pagp_ReductionPerYearInIncentiveDistributionRightsYearOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionPerYearInIncentiveDistributionRightsYearThree" id="pagp_ReductionPerYearInIncentiveDistributionRightsYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionPerYearInIncentiveDistributionRightsYearTwo" id="pagp_ReductionPerYearInIncentiveDistributionRightsYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyOwnershipInterestInSubsidiaryPercentage" id="pagp_RelatedPartyOwnershipInterestInSubsidiaryPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="RevenuesNetMember" id="pagp_RevenuesNetMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SLCPipelineLLCMember" id="pagp_SLCPipelineLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SaleOfStockAxis" id="pagp_SaleOfStockAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SalesAndRelatedRevenues" id="pagp_SalesAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SalesAndRelatedRevenuesMember" id="pagp_SalesAndRelatedRevenuesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" id="pagp_ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfChangesInMinorityInterestInMembersEquityTableTextBlock" id="pagp_ScheduleOfChangesInMinorityInterestInMembersEquityTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDebtInstrumentsTable" id="pagp_ScheduleOfDebtInstrumentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfInventoryLinefillAndBaseGasAndLongTermInventoryTableTextBlock" id="pagp_ScheduleOfInventoryLinefillAndBaseGasAndLongTermInventoryTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfOffsettingAssetsAndLiabilitiesTableTextBlock" id="pagp_ScheduleOfOffsettingAssetsAndLiabilitiesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationClassBUnitsAwardActivityTableTextBlock" id="pagp_ScheduleOfShareBasedCompensationClassBUnitsAwardActivityTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedPaymentAwardsExpenseTableTextBlock" id="pagp_ScheduleOfShareBasedPaymentAwardsExpenseTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentPipelineTariffActivitiesTruckingMember" id="pagp_SegmentPipelineTariffActivitiesTruckingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentSalesAndLogisticsMember" id="pagp_SegmentSalesAndLogisticsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentStorageTerminallingProcessingMember" id="pagp_SegmentStorageTerminallingProcessingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDue2023At3.85PercentMember" id="pagp_SeniorNotesDue2023At3.85PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInDecember2013At5.63PercentMember" id="pagp_SeniorNotesDueInDecember2013At5.63PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorSecuredHedgedInventoryDebtFacilityMember" id="pagp_SeniorSecuredHedgedInventoryDebtFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredRevolvingCreditFacilityMember" id="pagp_SeniorUnsecuredRevolvingCreditFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SettoonTowingMember" id="pagp_SettoonTowingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRight" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRight" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrantsOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrantsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalSettlementFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalSettlementFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingThereafter" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingThereafter" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriod" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestAnnualizedDistributionThreshold" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestAnnualizedDistributionThreshold" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodPriorToEachVestingDateForWhichAverageAnnualizedDistributionThresholdMustBeMaintained" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodPriorToEachVestingDateForWhichAverageAnnualizedDistributionThresholdMustBeMaintained" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedInPeriodSettledInCash" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedInPeriodSettledInCash" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodCashSettled" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodCashSettled" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansPeriodAfterDistributionEarned" id="pagp_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansPeriodAfterDistributionEarned" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeAxis" id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeDomain" id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortNaturalGasPositionRelatedToAnticipatedNaturalGasSalesMember" id="pagp_ShortNaturalGasPositionRelatedToAnticipatedNaturalGasSalesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetShortPositionContractsRelatedToAnticipatedInventorySalesMember" id="pagp_NetShortPositionContractsRelatedToAnticipatedInventorySalesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PositionHedgingRiskOfNotUtilizingStorageCapacityMember" id="pagp_PositionHedgingRiskOfNotUtilizingStorageCapacityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortPropanePositionContractsRelatedToSubsequentSaleOfProductMember" id="pagp_ShortPropanePositionContractsRelatedToSubsequentSaleOfProductMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortTermBorrowingsRepaymentPeriod" id="pagp_ShortTermBorrowingsRepaymentPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SouthernPinesAcquisitionMember" id="pagp_SouthernPinesAcquisitionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SpecialPAAAwardsMember" id="pagp_SpecialPAAAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StandbyLettersOfCreditReceived" id="pagp_StandbyLettersOfCreditReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="StatementOfLimitedLiabilityCompanyAbstract" id="pagp_StatementOfLimitedLiabilityCompanyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesThroughPartialExerciseOfUnderwriterOverallotmentOption" id="pagp_StockIssuedDuringPeriodSharesThroughPartialExerciseOfUnderwriterOverallotmentOption" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminalAndRailFacilitiesMember" id="pagp_StorageTerminalAndRailFacilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenues" id="pagp_StorageTerminallingProcessingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenuesMember" id="pagp_StorageTerminallingProcessingAndRelatedRevenuesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SubordinatedUnitsMember" id="pagp_SubordinatedUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TenForwardStartingThirtyYearInterestRateSwapMember" id="pagp_TenForwardStartingThirtyYearInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ThirdQuarterDistributionFY2013Member" id="pagp_ThirdQuarterDistributionFY2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FourthQuarterDistributionFY2013Member" id="pagp_FourthQuarterDistributionFY2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TotalCostToCleanUpAndRemediateSiteBeforeInsuranceRecoveries" id="pagp_TotalCostToCleanUpAndRemediateSiteBeforeInsuranceRecoveries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TotalDistributionPaidDuringPeriod" id="pagp_TotalDistributionPaidDuringPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TotalEstimatedCostToCleanUpAndRemediateSiteBeforeInsuranceRecoveries" id="pagp_TotalEstimatedCostToCleanUpAndRemediateSiteBeforeInsuranceRecoveries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TruckingEquipmentAndOtherMember" id="pagp_TruckingEquipmentAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="USDRailTerminalAcquisitionMember" id="pagp_USDRailTerminalAcquisitionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" id="pagp_UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="VariationMarginPostedReturned" id="pagp_VariationMarginPostedReturned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShortWTIPositionContractsRelatedToSubsequentSaleOfProductMember" id="pagp_ShortWTIPositionContractsRelatedToSubsequentSaleOfProductMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WesternRefiningAcquisitionMember" id="pagp_WesternRefiningAcquisitionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WhiteCliffsPipelineLlcMember" id="pagp_WhiteCliffsPipelineLlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmerican2013LongTermIncentivePlansMember" id="pagp_PlainsAllAmerican2013LongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsGPHoldingsLongTermIncentivePlansMember" id="pagp_PlainsGPHoldingsLongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ContributionsReceivedOrToBeReceived" id="pagp_ContributionsReceivedOrToBeReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationPlanAAPManagementUnitsMember" id="pagp_EquityBasedCompensationPlanAAPManagementUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquisitionsIn2013Member" id="pagp_AcquisitionsIn2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAcquisitionsIn2012Member" id="pagp_OtherAcquisitionsIn2012Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" id="pagp_ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" id="pagp_ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationManagementUnitsActivityTableTextBlock" id="pagp_ScheduleOfShareBasedCompensationManagementUnitsActivityTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" id="pagp_ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" id="pagp_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDateFairValueOfOutstandingAAPManagementUnitsRollForward" id="pagp_GrantDateFairValueOfOutstandingAAPManagementUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLongTermIncentivePlanConsolidated" id="pagp_NumberOfLongTermIncentivePlanConsolidated" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationAbstract" id="pagp_EquityBasedCompensationFairValueFutureAmortizationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AnnualizedDistributionProbableOfOccurring" id="pagp_AnnualizedDistributionProbableOfOccurring" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrossMargin" id="pagp_GrossMargin" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CapitalExpenditure" id="pagp_CapitalExpenditure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ThreeForwardStartingInterestRateSwapMember" id="pagp_ThreeForwardStartingInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonSharesClassAMember" id="pagp_CommonSharesClassAMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonSharesClassBMember" id="pagp_CommonSharesClassBMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanLongTermIncentivePlansMember" id="pagp_PlainsAllAmericanLongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AnnualizedVestingDistributionRangeMember" id="pagp_AnnualizedVestingDistributionRangeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.06MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.06MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.07MaturingIn2015Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.07MaturingIn2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.06Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.06Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.05MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.05MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.05Member" id="pagp_ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.05Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsMaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsMaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterestUnits" id="pagp_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterestUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesAttributableToNoncontrollingInterest" id="pagp_IncomeTaxesAttributableToNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionOfProceedsFromIssuanceInitialPublicOffering" id="pagp_DistributionOfProceedsFromIssuanceInitialPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInJune2015At5.25PercentMember" id="pagp_SeniorNotesDueInJune2015At5.25PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInAugust2016At5.88PercentMember" id="pagp_SeniorNotesDueInAugust2016At5.88PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAccountUnitsSoldInPublicOfferingOverAllotmentOption" id="pagp_PartnersCapitalAccountUnitsSoldInPublicOfferingOverAllotmentOption" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfSharesOutstandingReconciliationTableTextBlock" id="pagp_ScheduleOfSharesOutstandingReconciliationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SharesOutstandingReconciliationAbstract" id="pagp_SharesOutstandingReconciliationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LimitedPartnersCapitalAccountUnitsOrSharesExchanged" id="pagp_LimitedPartnersCapitalAccountUnitsOrSharesExchanged" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionInIncentiveDistributionsPerQuarterCurrentPeriod" id="pagp_ReductionInIncentiveDistributionsPerQuarterCurrentPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionInIncentiveDistributionsInFebruary2014" id="pagp_ReductionInIncentiveDistributionsInFebruary2014" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionInIncentiveDistributionsPerQuarterFromMay2014ThroughNovember2015" id="pagp_ReductionInIncentiveDistributionsPerQuarterFromMay2014ThroughNovember2015" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReductionInIncentiveDistributions" id="pagp_ReductionInIncentiveDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="UnitConversionRatio" id="pagp_UnitConversionRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxTable" id="pagp_IncomeTaxTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxLineItems" id="pagp_IncomeTaxLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditFacilityMaximumBorrowingCapacityBeforeAmendment" id="pagp_LineOfCreditFacilityMaximumBorrowingCapacityBeforeAmendment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebitInstrumentCarryingAmountBeforeAmendment" id="pagp_DebitInstrumentCarryingAmountBeforeAmendment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentLeverageRatioMaximum" id="pagp_DebtInstrumentLeverageRatioMaximum" type="xbrli:pureItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" id="pagp_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="Phillips66CompanyMember" id="pagp_Phillips66CompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionOfProceedsFromInitialPublicOffering" id="pagp_DistributionOfProceedsFromInitialPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalDeferredTaxAsset" id="pagp_PartnersCapitalDeferredTaxAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodWeightedAverageGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodWeightedAverageGrantDateFairValue" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseAfterYearFive" id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAccountTransferOfOwnershipInterest" id="pagp_PartnersCapitalAccountTransferOfOwnershipInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="UnallocatedGeneralAndAdministrativeExpense" id="pagp_UnallocatedGeneralAndAdministrativeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ExxonMobilCorporationMember" id="pagp_ExxonMobilCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDirectorsThatReceivedAwards" id="pagp_NumberOfDirectorsThatReceivedAwards" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" id="pagp_OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" id="pagp_AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AmountOfFutureTaxExemptDebtIssuance" id="pagp_AmountOfFutureTaxExemptDebtIssuance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PNGMergerMember" id="pagp_PNGMergerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" id="pagp_PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGTransactionGrantsMember" id="pagp_PNGTransactionGrantsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AAPUnitsMember" id="pagp_AAPUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GeneralPartnerUnitsMember" id="pagp_GeneralPartnerUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LimitedPartnersCapitalAccountSharesIssuedInExchange" id="pagp_LimitedPartnersCapitalAccountSharesIssuedInExchange" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" id="pagp_NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="UnitExchangeRatio" id="pagp_UnitExchangeRatio" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DeferredTaxAssetsInvestmentsInSubsidiaries" id="pagp_DeferredTaxAssetsInvestmentsInSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FirstQuarterDistributionFY2014Member" id="pagp_FirstQuarterDistributionFY2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsMaturingIn2015Member" id="pagp_ForeignExchangeForwardContractsMaturingIn2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11MaturingIn2015Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11MaturingIn2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11Member" id="pagp_ForeignExchangeForwardContractsThatExchangeCADForUSDAtTheRateUSD1.00ToCAD1.11Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.10MaturingIn2014Member" id="pagp_ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.10MaturingIn2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.1.10Member" id="pagp_ForeignExchangeForwardContractsThatExchangeUSDForCADAtTheRateUSD1.00ToCAD1.1.10Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueIn2044At4.70PercentMember" id="pagp_SeniorNotesDueIn2044At4.70PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TreasuryLockEnteredInApril2014Member" id="pagp_TreasuryLockEnteredInApril2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrentWTISpreadPositionsMember" id="pagp_BrentWTISpreadPositionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionInCashAvailableForDistribution" id="pagp_ReductionInCashAvailableForDistribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>
