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  <xsd:element id="paa_ChangesInAccumulatedOtherComprehensiveIncomeComponentsDomain" name="ChangesInAccumulatedOtherComprehensiveIncomeComponentsDomain" nillable="true" substitutionGroup="xbrli:item" type="us-types:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" name="AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" nillable="true" substitutionGroup="xbrli:item" type="us-types:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_ChangesInAccumulatedOtherComprehensiveIncomeLineItems" name="ChangesInAccumulatedOtherComprehensiveIncomeLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" name="IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" name="OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" 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 id="paa_InventoryLinefillAndBaseGasAndLongTermInventoryTextBlock" name="InventoryLinefillAndBaseGasAndLongTermInventoryTextBlock" nillable="true" substitutionGroup="xbrli:item" type="us-types:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_NetIncomePerLimitedPartnerUnitTextBlock" name="NetIncomePerLimitedPartnerUnitTextBlock" nillable="true" substitutionGroup="xbrli:item" type="us-types:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_GainOnConversionsOfEquityMethodInvestment" name="GainOnConversionsOfEquityMethodInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_AcquisitionsAndDispositionsDisclosureTextBlock" name="AcquisitionsAndDispositionsDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="us-types:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_DeferredIncomeTaxExpenseBenefitCashFlowImpact" name="DeferredIncomeTaxExpenseBenefitCashFlowImpact" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="paa_FieldOperatingCosts" name="FieldOperatingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OrganizationAndBasisOfPresentationDisclosureAbstract" name="OrganizationAndBasisOfPresentationDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_RecentAccountingPronouncementsDisclosureAbstract" name="RecentAccountingPronouncementsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_TradeAccountsReceivableDisclosureAbstract" name="TradeAccountsReceivableDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_AcquisitionsDisclosureAbstract" name="AcquisitionsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_InventoryLinefillBaseGasAndLongTermInventoryDisclosureAbstract" name="InventoryLinefillBaseGasAndLongTermInventoryDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DebtDisclosureAbstract" name="DebtDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_NetIncomePerLimitedPartnerUnitDisclosureAbstract" name="NetIncomePerLimitedPartnerUnitDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_PartnersCapitalAndDistributionsDisclosureAbstract" name="PartnersCapitalAndDistributionsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EquityCompensationPlansDisclosureAbstract" name="EquityCompensationPlansDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DerivativesAndRiskManagementActivitiesDisclosureAbstract" name="DerivativesAndRiskManagementActivitiesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_IncomeTaxesDisclosureAbstract" name="IncomeTaxesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_CommitmentsAndContingenciesDisclosureAbstract" name="CommitmentsAndContingenciesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_OperatingSegmentsDisclosureAbstract" name="OperatingSegmentsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SupplementalCondensedConsolidatingFinancialInformationDisclosureAbstract" name="SupplementalCondensedConsolidatingFinancialInformationDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SubsequentEventsDisclosureAbstract" name="SubsequentEventsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_SummaryOfSignificantAccountingPoliciesDisclosureAbstract" name="SummaryOfSignificantAccountingPoliciesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_DisposalGroupsIncludingDiscontinuedOperationsDisclosureAbstract" name="DisposalGroupsIncludingDiscontinuedOperationsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_MajorCustomersAndConcentrationOfCreditRiskDisclosureAbstract" name="MajorCustomersAndConcentrationOfCreditRiskDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_RelatedPartyTransactionsDisclosureAbstract" name="RelatedPartyTransactionsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_EnvironmentalRemediationDisclosureAbstract" name="EnvironmentalRemediationDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_QuarterlyFinancialDataDisclosureAbstract" name="QuarterlyFinancialDataDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="paa_AcquisitionsAndDispositionsDisclosureAbstract" name="AcquisitionsAndDispositionsDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="paa_IncreaseDecreaseInShortTermInventories" name="IncreaseDecreaseInShortTermInventories" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_IncreaseDecreaseInLongTermInventories" name="IncreaseDecreaseInLongTermInventories" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="paa_ChangesInAssetsAndLiabilitiesNetOfAcquisitions" name="ChangesInAssetsAndLiabilitiesNetOfAcquisitions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>
