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  <xsd:element abstract="true" id="cppl_InitialPublicOfferingTable" name="InitialPublicOfferingTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestAdditionalOwnershipInterest" name="LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersOwnershipInterestAdditionalOwnershipInterest" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_MergerRelatedUtilitiesOperatingExpenseMaintenanceandOperationsRelatedParties" name="MergerRelatedUtilitiesOperatingExpenseMaintenanceandOperationsRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cppl_Mergerrelatedtransactioncosts" name="Mergerrelatedtransactioncosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_MillenniumPipelineMember" name="MillenniumPipelineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_ModernizationProgramRecovery" name="ModernizationProgramRecovery" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cppl_MoneyPoolMember" name="MoneyPoolMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_NaturalGasMidstreamRevenueRelatedParty" name="NaturalGasMidstreamRevenueRelatedParty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cppl_NaturalGasStorageRevenueRelatedParties" name="NaturalGasStorageRevenueRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_NetIncomePerLimitedPartnerUnitAbstract" name="NetIncomePerLimitedPartnerUnitAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_NetTransfersToFromParent" name="NetTransfersToFromParent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cppl_Noncontributednetparentinvestmentadjustments" name="Noncontributednetparentinvestmentadjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_NotesDue2020Member" name="NotesDue2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_Numberofdaysinquarter" name="Numberofdaysinquarter" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_OrderAxis" name="OrderAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_OrderDomain" name="OrderDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_OtherCommitmentsandContingenciesLineItems" name="OtherCommitmentsandContingenciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_OtherCommitmentsandContingenciesTable" name="OtherCommitmentsandContingenciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_OtherComprehensiveIncomeNetofTaxandTransactionAdjustments" name="OtherComprehensiveIncomeNetofTaxandTransactionAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cppl_OtherComprehensiveIncomeUnrecognizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" name="OtherComprehensiveIncomeUnrecognizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cppl_OzoneLevelMaximum" name="OzoneLevelMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_PartnersCapitalPredecessorNetLiabilitiesNotAssumedBySubsidiary" name="PartnersCapitalPredecessorNetLiabilitiesNotAssumedBySubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cppl_PaymentsofDistributionstoUnitholders" name="PaymentsofDistributionstoUnitholders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_PennantMember" name="PennantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_PensionAndOtherPostretirementBenefitsAbstract" name="PensionAndOtherPostretirementBenefitsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_PipelineLength" name="PipelineLength" nillable="true" substitutionGroup="xbrli:item" type="num:lengthItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cppl_PreviousMember" name="PreviousMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_ProceedsfromCollectionofPaymentstoFundShorttermLoanstoRelatedParties" name="ProceedsfromCollectionofPaymentstoFundShorttermLoanstoRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cppl_ProceedsfromRepaymentsofShorttermDebttoRelatedParties" name="ProceedsfromRepaymentsofShorttermDebttoRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cppl_ReimbursementofPreformationCapital" name="ReimbursementofPreformationCapital" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_ScheduleOfEarningsPerUnitLineItems" name="ScheduleOfEarningsPerUnitLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_ScheduleOfEarningsPerUnitTable" name="ScheduleOfEarningsPerUnitTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_ScheduleofRelatedPartyTransactionsLongTermDebtLineItems" name="ScheduleofRelatedPartyTransactionsLongTermDebtLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_ScheduleofRelatedPartyTransactionsLongTermDebtTable" name="ScheduleofRelatedPartyTransactionsLongTermDebtTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_ScheduleofRelatedPartyTransactionsLongTermDebtTableTextBlock" name="ScheduleofRelatedPartyTransactionsLongTermDebtTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_ShortTermBorrowingsRelatedParties" name="ShortTermBorrowingsRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cppl_SignificantAssumptionsAbstract" name="SignificantAssumptionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_SubordinatedUnitsMember" name="SubordinatedUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_SupplementalCashFlowLineItems" name="SupplementalCashFlowLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_SupplementalCashflowAxis" name="SupplementalCashflowAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_SupplementalCashflowTable" name="SupplementalCashflowTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_TerminationPayment" name="TerminationPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_TimingAxis" name="TimingAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_TimingDomain" name="TimingDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_TransCanadaPipeLineUSALtd.Member" name="TransCanadaPipeLineUSALtd.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cppl_TransportationandStorageServicesMember" name="TransportationandStorageServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_UnrealizedGainLossOnDerivativesAmortizationPeriod" name="UnrealizedGainLossOnDerivativesAmortizationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cppl_UtilitiesOperatingExpenseMaintenanceandOperationsRelatedParties" name="UtilitiesOperatingExpenseMaintenanceandOperationsRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
