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  <xsd:element abstract="true" id="paa_AgreementToTransportCrudeOilOnPipelineOfEquityMethodInvesteeMember" name="AgreementToTransportCrudeOilOnPipelineOfEquityMethodInvesteeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_AlphaHoldingCompanyLLCMember" name="AlphaHoldingCompanyLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_BasicAndDilutedEarningsPerShareLineItems" name="BasicAndDilutedEarningsPerShareLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_BridgeTexPipelineCompanyLLCMember" name="BridgeTexPipelineCompanyLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_BusinessCombinationNumberofFiniteLivedAssetsAcquired" name="BusinessCombinationNumberofFiniteLivedAssetsAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_BusinessCombinationPropertyAndPlantAcquiredAreaOfOilAndGasContract" name="BusinessCombinationPropertyAndPlantAcquiredAreaOfOilAndGasContract" nillable="true" substitutionGroup="xbrli:item" type="num:areaItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_BusinessCombinationPropertyAndPlantAcquiredLengthOfGatheringAndTransmissionLines" name="BusinessCombinationPropertyAndPlantAcquiredLengthOfGatheringAndTransmissionLines" nillable="true" substitutionGroup="xbrli:item" type="num:lengthItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_BusinessCombinationPropertyAndPlantAcquiredNumberOfMarketInterconnects" name="BusinessCombinationPropertyAndPlantAcquiredNumberOfMarketInterconnects" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_BusinessCombinationPropertyAndPlantAcquiredVolumePerDurationOfAdditionalEnhancements" name="BusinessCombinationPropertyAndPlantAcquiredVolumePerDurationOfAdditionalEnhancements" nillable="true" substitutionGroup="xbrli:item" type="us-types:flowItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherNet" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_ButtePipelineCompanyMember" name="ButtePipelineCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_CaddoPipelineLlcMember" name="CaddoPipelineLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_CapitalContributionsToEquityMethodInvestees" name="CapitalContributionsToEquityMethodInvestees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_CapitalContributionsToEquityMethodInvesteesExcludingCapitalizedInterest" name="CapitalContributionsToEquityMethodInvesteesExcludingCapitalizedInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_CapitalExpenditures" name="CapitalExpenditures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_CashFlowHedgeGainLossToBeReclassifiedRemainingPortion" name="CashFlowHedgeGainLossToBeReclassifiedRemainingPortion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_CashPaidRelatedToPurchasesOfLinefillAndBaseGas" name="CashPaidRelatedToPurchasesOfLinefillAndBaseGas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_CashReceivedRelatedToSalesOfLinefillAndBaseGas" name="CashReceivedRelatedToSalesOfLinefillAndBaseGas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_CheyennePipelineLlcMember" name="CheyennePipelineLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ClassActionLawsuitsMember" name="ClassActionLawsuitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_CommissionPaidToSalesAgent" name="CommissionPaidToSalesAgent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_CommonUnitsMember" name="CommonUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ComputationOfBasicAndDilutedEarningsPerLimitedPartnerUnitTable" name="ComputationOfBasicAndDilutedEarningsPerLimitedPartnerUnitTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ConsolidatedFinanceSubsidiaryIssuerMember" name="ConsolidatedFinanceSubsidiaryIssuerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ContinuousOfferingProgramMember" name="ContinuousOfferingProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ConversionOfAapManagementUnitsIntoAapUnitsMember" name="ConversionOfAapManagementUnitsIntoAapUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_CounterpartyDeficiencies" name="CounterpartyDeficiencies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="paa_CounterpartyDeficienciesUnbilledAndUncollected" name="CounterpartyDeficienciesUnbilledAndUncollected" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_CrudeOilGradeBasisPositionMember" name="CrudeOilGradeBasisPositionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DebtAssumed" name="DebtAssumed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="paa_DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" name="DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DebtInstrumentCoverageRatioDebtToEBITDAMaximum" name="DebtInstrumentCoverageRatioDebtToEBITDAMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DeferredStateandLocalIncomeTaxExpenseBenefitNetofFederalBenefitExpense" name="DeferredStateandLocalIncomeTaxExpenseBenefitNetofFederalBenefitExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_DeferredTaxAssetsInvestmentsInSubsidiaries" name="DeferredTaxAssetsInvestmentsInSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_DeficienciesUnderMinimumVolumeCommitmentsNet" name="DeficienciesUnderMinimumVolumeCommitmentsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DepreciationAndAmortizationMember" name="DepreciationAndAmortizationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DepreciationAndAmortizationOfUnconsolidatedEntities" name="DepreciationAndAmortizationOfUnconsolidatedEntities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DiamondPipelineLlcMember" name="DiamondPipelineLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DisposalGroupSaleofAssetsOwnershipInterestDisposedOf" name="DisposalGroupSaleofAssetsOwnershipInterestDisposedOf" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DistributionPercentageSpread" name="DistributionPercentageSpread" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_DistributionsReceivedFromConsolidatedSubsidiary" name="DistributionsReceivedFromConsolidatedSubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DocumentEntityInformationAbstract" name="DocumentEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EagleFordPipelineLLCMember" name="EagleFordPipelineLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EagleFordTerminalsCorpusChristiLlcMember" name="EagleFordTerminalsCorpusChristiLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EightForwardStartingThirtyYearInterestRateSwaps2.83PercentMember" name="EightForwardStartingThirtyYearInterestRateSwaps2.83PercentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EliminationsAndReconcilingItemsMember" name="EliminationsAndReconcilingItemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EquityBasedCompensationFairValueFutureAmortizationAbstract" name="EquityBasedCompensationFairValueFutureAmortizationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_EquityBasedCompensationPlanAAPManagementUnitsMember" name="EquityBasedCompensationPlanAAPManagementUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_EquityIndexedCompensationExpenseAwardsThatWillOrMayBeSettledInUnits" name="EquityIndexedCompensationExpenseAwardsThatWillOrMayBeSettledInUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_EquityMethodInvestmentOwnershipPercentageAcquired" name="EquityMethodInvestmentOwnershipPercentageAcquired" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_EquityMethodInvestmentOwnershipPercentageSold" name="EquityMethodInvestmentOwnershipPercentageSold" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome" name="EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_EquivalentDistributionAmount" name="EquivalentDistributionAmount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_EstimatedBorrowingForTrueUpDistributionToSubsidiaryUnitholdersIfTransactionsNotClosed" name="EstimatedBorrowingForTrueUpDistributionToSubsidiaryUnitholdersIfTransactionsNotClosed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_EstimatedSizeOfRelease" name="EstimatedSizeOfRelease" nillable="true" substitutionGroup="xbrli:item" type="num:volumeItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_EstimatedSizeOfReleaseToReachBodyOfWater" name="EstimatedSizeOfReleaseToReachBodyOfWater" nillable="true" substitutionGroup="xbrli:item" type="num:volumeItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ExchangeOfAapUnitsAndClassBSharesForClassaSharesMember" name="ExchangeOfAapUnitsAndClassBSharesForClassaSharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_ExpenseForWithholdingTaxes" name="ExpenseForWithholdingTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ExxonMobilCorporationMember" name="ExxonMobilCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationDerivativesEnteredInto" name="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationDerivativesEnteredInto" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" name="FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_FieldOperatingCostsMember" name="FieldOperatingCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ForeignExchangeForwardContractsThatExchangeCanadianDollarsForUSDollarsAtAverageRateDisclosedMaturingin2018Member" name="ForeignExchangeForwardContractsThatExchangeCanadianDollarsForUSDollarsAtAverageRateDisclosedMaturingin2018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ForeignExchangeForwardContractsThatExchangeUSDollarsForCanadianDollarsAtAverageRateDisclosedMaturingIn2018Member" name="ForeignExchangeForwardContractsThatExchangeUSDollarsForCanadianDollarsAtAverageRateDisclosedMaturingIn2018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" name="ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_FourthQuarterDistributionMember" name="FourthQuarterDistributionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_FrontierAspenLLCMember" name="FrontierAspenLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_FrontierPipelineCompanyMember" name="FrontierPipelineCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_GainOnDispositionOfAssets" name="GainOnDispositionOfAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_GainsLossesFromDerivativeActivitiesNetofInventoryValuationAdjustments" name="GainsLossesFromDerivativeActivitiesNetofInventoryValuationAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_GeneralPartnerDistributionPercentage" name="GeneralPartnerDistributionPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_GrossMargin" name="GrossMargin" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_ImpairmentOfLongLivedAssetsHeldForUseIncludingAcceleratedDepreciation" name="ImpairmentOfLongLivedAssetsHeldForUseIncludingAcceleratedDepreciation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_IncomeTaxesAttributableToNoncontrollingInterest" name="IncomeTaxesAttributableToNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_IndictmentInCaliforniaSuperiorCourtSantaBarbaraCountyMember" name="IndictmentInCaliforniaSuperiorCourtSantaBarbaraCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_IndictmentNumberOfCountsRelatedToReleaseOfCrudeOilOrReportingOfRelease" name="IndictmentNumberOfCountsRelatedToReleaseOfCrudeOilOrReportingOfRelease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_IndictmentNumberOfFelonyCharges" name="IndictmentNumberOfFelonyCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_IndictmentNumberOfMisdemeanorChargesRelatingToWildlife" name="IndictmentNumberOfMisdemeanorChargesRelatingToWildlife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_IndictmentNumberofFelonyChargesDismissed" name="IndictmentNumberofFelonyChargesDismissed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_IndictmentTotalNumberOfCounts" name="IndictmentTotalNumberOfCounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_IndictmentTotalNumberofCountsDismissed" name="IndictmentTotalNumberofCountsDismissed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_InitialMargin" name="InitialMargin" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_IntegratedSystemOfNGLAssetsMember" name="IntegratedSystemOfNGLAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_InventoryCurrentAndNoncurrent" name="InventoryCurrentAndNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_InventoryVolumesCurrent" name="InventoryVolumesCurrent" nillable="true" substitutionGroup="xbrli:item" type="num:volumeItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_InventoryVolumesLinefillAndBaseGas" name="InventoryVolumesLinefillAndBaseGas" nillable="true" substitutionGroup="xbrli:item" type="num:volumeItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_InventoryVolumesNoncurrent" name="InventoryVolumesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="num:volumeItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_InventoryWeightedAveragePricePerUnitCurrent" name="InventoryWeightedAveragePricePerUnitCurrent" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" name="InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_InventoryWeightedAveragePricePerUnitNoncurrent" name="InventoryWeightedAveragePricePerUnitNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_LandAndOtherMember" name="LandAndOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_LenderTypeAxis" name="LenderTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_LenderTypeDomain" name="LenderTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LiabilitiesForOutstandingChecks" name="LiabilitiesForOutstandingChecks" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_LiabilityAwardsMember" name="LiabilityAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestUnits" name="LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpManagingMemberOrGeneralPartnerEconomicOwnershipInterestConvertedIntoNonEconomicInterest" name="LimitedLiabilityCompanyLlcOrLimitedPartnershipLpManagingMemberOrGeneralPartnerEconomicOwnershipInterestConvertedIntoNonEconomicInterest" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedPartnerCapitalAccountUnitsAgreedToBeIssued" name="LimitedPartnerCapitalAccountUnitsAgreedToBeIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_LimitedPartnersCapitalAccountSharesIssuedExchangedinExchangeRightExercises" name="LimitedPartnersCapitalAccountSharesIssuedExchangedinExchangeRightExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedPartnersCapitalAccountSharesIssuedFromConversion" name="LimitedPartnersCapitalAccountSharesIssuedFromConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedPartnersCapitalAccountSharesIssuedFromSimplificationTransactions" name="LimitedPartnersCapitalAccountSharesIssuedFromSimplificationTransactions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedPartnersCapitalAccountSharesIssuedRedeemedinRedemptionRightExercises" name="LimitedPartnersCapitalAccountSharesIssuedRedeemedinRedemptionRightExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LimitedPartnersCapitalAccountUnitsIssuable" name="LimitedPartnersCapitalAccountUnitsIssuable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_Line901IncidentMember" name="Line901IncidentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_LineOfCreditAndCommercialPaperMember" name="LineOfCreditAndCommercialPaperMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LineOfCreditFacilityPeriodForWhichTermOfCreditFacilityMayBeExtended" name="LineOfCreditFacilityPeriodForWhichTermOfCreditFacilityMayBeExtended" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LinefillAndBaseGas" name="LinefillAndBaseGas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_LongPositionOnNaturalGasContractsMember" name="LongPositionOnNaturalGasContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_LongPowerPositionForPowerSupplyRequirementsContractsMember" name="LongPowerPositionForPowerSupplyRequirementsContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LongTermDebtWeightedAverageMaturity" name="LongTermDebtWeightedAverageMaturity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LongTermInventoryCostingAdjustments" name="LongTermInventoryCostingAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_LossContingencyClaimsConsolidatedNumber" name="LossContingencyClaimsConsolidatedNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_LossContingencyPenaltyOrFineAssessed" name="LossContingencyPenaltyOrFineAssessed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="paa_LossOnDispositionOfAssets" name="LossOnDispositionOfAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_MaintenanceCapital" name="MaintenanceCapital" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_MarathonPetroleumCorporationMember" name="MarathonPetroleumCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_MesaToBasinPipelineReleaseMember" name="MesaToBasinPipelineReleaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_MidwayPipelineLLCMember" name="MidwayPipelineLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_MinimumVolumeCommitmentAgreementsMember" name="MinimumVolumeCommitmentAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NetCashPaidReceivedForTerminatedHedgingInstruments" name="NetCashPaidReceivedForTerminatedHedgingInstruments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_NetGainLossOnForeignCurrencyRevaluation" name="NetGainLossOnForeignCurrencyRevaluation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_NetLongPositionOnCrudeOilDerivativeContractsMember" name="NetLongPositionOnCrudeOilDerivativeContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NetProceedsFromRepaymentsOfHedgedInventoryFacility" name="NetProceedsFromRepaymentsOfHedgedInventoryFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_NetProceedsFromSaleOfUnitsTableTextBlock" name="NetProceedsFromSaleOfUnitsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_NetShortPositionContractsRelatedToAnticipatedNetSalesOfInventoryMember" name="NetShortPositionContractsRelatedToAnticipatedNetSalesOfInventoryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_NetShortTimeSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" name="NetShortTimeSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NoncontrollingInterestIncreasefromSubsidiaryPreferredUnitIssuanceByPrivatePlacement" name="NoncontrollingInterestIncreasefromSubsidiaryPreferredUnitIssuanceByPrivatePlacement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_NoncontrollingInterestIncreasefromSubsidiaryPreferredUnitIssuanceByPublicOffering" name="NoncontrollingInterestIncreasefromSubsidiaryPreferredUnitIssuanceByPublicOffering" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_NonextendingLenderMember" name="NonextendingLenderMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" name="NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" name="NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NumberOfEmployeesChargedInIndictment" name="NumberOfEmployeesChargedInIndictment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NumberOfOccasionsOfAllegedFailureToCarryOutProgramAndProcedures" name="NumberOfOccasionsOfAllegedFailureToCarryOutProgramAndProcedures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NumberOfOneYearExtensionsOfRevolvingCreditFacility" name="NumberOfOneYearExtensionsOfRevolvingCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OffsettingAssetsLiabilitiesLineItems" name="OffsettingAssetsLiabilitiesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OffsettingAssetsLiabilitiesTable" name="OffsettingAssetsLiabilitiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OmnibusAgreementMember" name="OmnibusAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OrganizationAndBasisOfPresentationLineItems" name="OrganizationAndBasisOfPresentationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_OtherAssetsNoncurrentGross" name="OtherAssetsNoncurrentGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="paa_OtherConsolidatedEquityCompensationInformationAbstract" name="OtherConsolidatedEquityCompensationInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OtherDebtMember" name="OtherDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OtherInventoryMember" name="OtherInventoryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OtherLongTermDebtMember" name="OtherLongTermDebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OxyMember" name="OxyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PAALTIPMember" name="PAALTIPMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PaaCreditFacilitiesMember" name="PaaCreditFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PaaGPLLCMember" name="PaaGPLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountChangeInOwnershipInterest" name="PartnersCapitalAccountChangeInOwnershipInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountPrivatePlacementOfUnitsTransactionFeeDueToPurchasersPercentage" name="PartnersCapitalAccountPrivatePlacementOfUnitsTransactionFeeDueToPurchasersPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountPublicSaleOfUnitsBySubsidiary" name="PartnersCapitalAccountPublicSaleOfUnitsBySubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountSaleOfUnitsPricePerUnit" name="PartnersCapitalAccountSaleOfUnitsPricePerUnit" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountUnitsIncreasefromSubsidiaryCommonUnitIssuance" name="PartnersCapitalAccountUnitsIncreasefromSubsidiaryCommonUnitIssuance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalAccountUnitsIncreasefromSubsidiaryPreferredUnitIssuance" name="PartnersCapitalAccountUnitsIncreasefromSubsidiaryPreferredUnitIssuance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PartnersCapitalAndDistributionLineItems" name="PartnersCapitalAndDistributionLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PartnersCapitalAndDistributionsTable" name="PartnersCapitalAndDistributionsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalDeferredTaxAsset" name="PartnersCapitalDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PartnersCapitalNoteAbstract" name="PartnersCapitalNoteAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PartnersCapitalUnitsOther" name="PartnersCapitalUnitsOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PercentageDistributionOfAvailableCash" name="PercentageDistributionOfAvailableCash" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_Phillips66CompanyMember" name="Phillips66CompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PipelineAndHazardousMaterialsSafetyAdministrationMember" name="PipelineAndHazardousMaterialsSafetyAdministrationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PipelineLossAllowanceCrudeOilLongCallOptionMember" name="PipelineLossAllowanceCrudeOilLongCallOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PipelineLossAllowanceNetShortPositionConsistingofCrudeOilFuturesMember" name="PipelineLossAllowanceNetShortPositionConsistingofCrudeOilFuturesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PipelineTariffActivitiesTruckingAndRelatedRevenues" name="PipelineTariffActivitiesTruckingAndRelatedRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PipelineTariffActivitiesTruckingAndRelatedRevenuesMember" name="PipelineTariffActivitiesTruckingAndRelatedRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAapLPMember" name="PlainsAapLPMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmerican2013LongTermIncentivePlanMember" name="PlainsAllAmerican2013LongTermIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmericanGPLLCLongTermIncentiveTrackingUnitPlanMember" name="PlainsAllAmericanGPLLCLongTermIncentiveTrackingUnitPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmericanGPLLCMember" name="PlainsAllAmericanGPLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmericanLongTermIncentivePlansMember" name="PlainsAllAmericanLongTermIncentivePlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" name="PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsAllAmericanPipelineLPMember" name="PlainsAllAmericanPipelineLPMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PlainsGPHoldingsLongTermIncentivePlansMember" name="PlainsGPHoldingsLongTermIncentivePlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PreferredStockRedemptionPricePercentage" name="PreferredStockRedemptionPricePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_PreferredUnitsAnnualizedDistributionsPerUnit" name="PreferredUnitsAnnualizedDistributionsPerUnit" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PreferredUnitsConversionRatio" name="PreferredUnitsConversionRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PreferredUnitsDistributionRateResetBasisSpreadOnVariableRate" name="PreferredUnitsDistributionRateResetBasisSpreadOnVariableRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="paa_PreferredUnitsPeriodAfterSixthAnniversaryForCommencementOfRedemptionOption" name="PreferredUnitsPeriodAfterSixthAnniversaryForCommencementOfRedemptionOption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PreferredUnitsQuarterlyDistributionsPerUnit" name="PreferredUnitsQuarterlyDistributionsPerUnit" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_PrepaidTariffCosts" name="PrepaidTariffCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="paa_ProceedsFromSubsidiaryIssuanceOfCommonLimitedPartnersUnits" name="ProceedsFromSubsidiaryIssuanceOfCommonLimitedPartnersUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_ProceedsFromSubsidiaryIssuanceOfConvertiblePreferredStock" name="ProceedsFromSubsidiaryIssuanceOfConvertiblePreferredStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_ProceedsFromSubsidiaryIssuanceofPeferredLimitedPartnersUnits" name="ProceedsFromSubsidiaryIssuanceofPeferredLimitedPartnersUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_ProceedsfromEquityMethodInvestmentReturnOfCashContributions" name="ProceedsfromEquityMethodInvestmentReturnOfCashContributions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PropaneMarineTerminalMember" name="PropaneMarineTerminalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PropertyTaxAbatementMember" name="PropertyTaxAbatementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_RailAndOtherTerminalAssetsMember" name="RailAndOtherTerminalAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_RedRiverPipelineMember" name="RedRiverPipelineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_ReductionInCashAvailableForDistribution" name="ReductionInCashAvailableForDistribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SLCPipelineLLCMember" name="SLCPipelineLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_STACKPipelineLLCMember" name="STACKPipelineLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SaddlehornPipelineCompanyLlcMember" name="SaddlehornPipelineCompanyLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_SalesAndRelatedRevenues" name="SalesAndRelatedRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SalesAndRelatedRevenuesMember" name="SalesAndRelatedRevenuesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ScheduleOfDebtInstrumentsTable" name="ScheduleOfDebtInstrumentsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element id="paa_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
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</xsd:schema>
