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  <xs:element id="ngl_FutureAmortizationofDebtIssuanceCostsYearTwo" abstract="false" name="FutureAmortizationofDebtIssuanceCostsYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_FutureAmortizationofDebtIssuanceCostsYearThree" abstract="false" name="FutureAmortizationofDebtIssuanceCostsYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_FutureAmortizationofDebtIssuanceCostsYearFour" abstract="false" name="FutureAmortizationofDebtIssuanceCostsYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_FutureAmortizationofDebtIssuanceCostsYearFive" abstract="false" name="FutureAmortizationofDebtIssuanceCostsYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_FutureAmortizationofDebtIssuanceCostsAfterYearFive" abstract="false" name="FutureAmortizationofDebtIssuanceCostsAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_ServicesRenderedMember" abstract="true" name="ServicesRenderedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_FraudulentMisrepresentationMember" abstract="true" name="FraudulentMisrepresentationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_FixedPriceMember" abstract="true" name="FixedPriceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_IndexPriceMember" abstract="true" name="IndexPriceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeYearOne" abstract="false" name="PurchaseObligationVolumeYearOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeYearTwo" abstract="false" name="PurchaseObligationVolumeYearTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeYearThree" abstract="false" name="PurchaseObligationVolumeYearThree" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeYearFour" abstract="false" name="PurchaseObligationVolumeYearFour" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeYearFive" abstract="false" name="PurchaseObligationVolumeYearFive" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolumeAfterYearFive" abstract="false" name="PurchaseObligationVolumeAfterYearFive" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_PurchaseObligationVolume" abstract="false" name="PurchaseObligationVolume" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_UnrecordedUnconditionalSalesObligationTable" abstract="true" name="UnrecordedUnconditionalSalesObligationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ngl_SalesCommitmentByCategoryOfItemSoldAxis" abstract="true" name="SalesCommitmentByCategoryOfItemSoldAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ngl_SalesCommitmentByCategoryOfItemSoldDomain" abstract="true" name="SalesCommitmentByCategoryOfItemSoldDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CategoryOfItemSoldAxis" abstract="true" name="CategoryOfItemSoldAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ngl_CategoryOfItemSoldDomain" abstract="true" name="CategoryOfItemSoldDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_UnrecordedUnconditionalSalesObligationLineItems" abstract="true" name="UnrecordedUnconditionalSalesObligationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ngl_SalesCommitmentsYearOne" abstract="false" name="SalesCommitmentsYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_SalesCommitmentsYearTwo" abstract="false" name="SalesCommitmentsYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_SalesCommitmentsYearThree" abstract="false" name="SalesCommitmentsYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_SalesCommitmentsYearFour" abstract="false" name="SalesCommitmentsYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_SalesCommitments" abstract="false" name="SalesCommitments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_SaleCommitmentsVolumeYearOne" abstract="false" name="SaleCommitmentsVolumeYearOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_SaleCommitmentsVolumeYearTwo" abstract="false" name="SaleCommitmentsVolumeYearTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_SaleCommitmentsVolumeYearThree" abstract="false" name="SaleCommitmentsVolumeYearThree" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_SaleCommitmentsVolumeYearFour" abstract="false" name="SaleCommitmentsVolumeYearFour" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_SaleCommitmentsVolume" abstract="false" name="SaleCommitmentsVolume" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="ngl_ShareRepurchaseProgramMember" abstract="true" name="ShareRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_OwnershipPercentageinGeneralPartner" abstract="false" name="OwnershipPercentageinGeneralPartner" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ngl_DividendsDeclaredPercentageOfDividendsInArrears" abstract="false" name="DividendsDeclaredPercentageOfDividendsInArrears" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ngl_PreferredUnitDistributionVariableRateBasis" abstract="false" name="PreferredUnitDistributionVariableRateBasis" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ngl_PremiumWarrantsMember" abstract="true" name="PremiumWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_ParWarrantsMember" abstract="true" name="ParWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_NumberOfWarrantsRepurchased" abstract="false" name="NumberOfWarrantsRepurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ngl_TemporaryEquityUnitsRedeemed" abstract="false" name="TemporaryEquityUnitsRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ngl_TemporaryEquityRedemptionPricePerShareIncludingDividends" abstract="false" name="TemporaryEquityRedemptionPricePerShareIncludingDividends" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ngl_TemporaryEquityRedemptionPremiumPercentage" abstract="false" name="TemporaryEquityRedemptionPremiumPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ngl_VestingIn2027Member" abstract="true" name="VestingIn2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_VestingIn2028Member" abstract="true" name="VestingIn2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_VestingIn2029Member" abstract="true" name="VestingIn2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_VestingIn2030Member" abstract="true" name="VestingIn2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_ExpectedFutureExpenseAbstract" abstract="true" name="ExpectedFutureExpenseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ngl_AllocatedShareBasedCompensationExpenseNextTwelveMonths" abstract="false" name="AllocatedShareBasedCompensationExpenseNextTwelveMonths" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AllocatedShareBasedCompensationExpenseYearTwo" abstract="false" name="AllocatedShareBasedCompensationExpenseYearTwo" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AllocatedShareBasedCompensationExpenseYearThree" abstract="false" name="AllocatedShareBasedCompensationExpenseYearThree" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AllocatedShareBasedCompensationExpenseYearFour" abstract="false" name="AllocatedShareBasedCompensationExpenseYearFour" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AllocatedShareBasedCompensationExpenseTotal" abstract="false" name="AllocatedShareBasedCompensationExpenseTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_ButaneMember" abstract="true" name="ButaneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_DerivativeCollateralObligationToReturnRightToReclaimCash" abstract="false" name="DerivativeCollateralObligationToReturnRightToReclaimCash" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_MarchInterestRateSwapMember" abstract="true" name="MarchInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_AprilInterestRateSwapMember" abstract="true" name="AprilInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_NumberOfInterestRateSwaps" abstract="false" name="NumberOfInterestRateSwaps" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ngl_ServiceFeesMember" abstract="true" name="ServiceFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_WaterRevenuesMember" abstract="true" name="WaterRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_OtherRevenuesMember" abstract="true" name="OtherRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CrudeOilTransportationAndOtherMember" abstract="true" name="CrudeOilTransportationAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_OtherProductsSalesMember" abstract="true" name="OtherProductsSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CostOfGoodsAndServicesSoldSegmentReporting" abstract="false" name="CostOfGoodsAndServicesSoldSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_OperatingGeneralAndAdministrativeExpensesSegmentReporting" abstract="false" name="OperatingGeneralAndAdministrativeExpensesSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_OtherItemsSegmentReporting" abstract="false" name="OtherItemsSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AdjustedEBITDA" abstract="false" name="AdjustedEBITDA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_CMADifferentialRollNetGainsLosses" abstract="false" name="CMADifferentialRollNetGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_LowerOfCostOrRealizableValueAdjustment" abstract="false" name="LowerOfCostOrRealizableValueAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AcquisitionExpenseSegmentReporting" abstract="false" name="AcquisitionExpenseSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AdjustmentsToUnconsolidatedEntitiesSegmentReporting" abstract="false" name="AdjustmentsToUnconsolidatedEntitiesSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_OtherSegmentReporting" abstract="false" name="OtherSegmentReporting" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AcquisitionOfPropertyPlantAndEquipmentAndIntangibleAssets" abstract="false" name="AcquisitionOfPropertyPlantAndEquipmentAndIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_EquityMethodInvestmentMember" abstract="true" name="EquityMethodInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_RevenuefromContractswithCustomersPerformanceObligationsAbstract" abstract="true" name="RevenuefromContractswithCustomersPerformanceObligationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ngl_AccountsReceivableAllowanceForCreditLossDispositionOfAsset" abstract="false" name="AccountsReceivableAllowanceForCreditLossDispositionOfAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_AccountsReceivableAllowanceForCreditLossAssetsHeldForSale" abstract="false" name="AccountsReceivableAllowanceForCreditLossAssetsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DebtSecuritiesHeldToMaturityAllowanceForCreditLossDispositionOfAsset" abstract="false" name="DebtSecuritiesHeldToMaturityAllowanceForCreditLossDispositionOfAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DebtSecuritiesHeldToMaturityAllowanceForCreditLossAssetsHeldForSale" abstract="false" name="DebtSecuritiesHeldToMaturityAllowanceForCreditLossAssetsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_EagleFordAssetsMember" abstract="true" name="EagleFordAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_NumberOfSharesPurchased" abstract="false" name="NumberOfSharesPurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ngl_NumberOfSharesSold" abstract="false" name="NumberOfSharesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ngl_AnticlineAssetsMember" abstract="true" name="AnticlineAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_PermianAssetsMember" abstract="true" name="PermianAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CertainSaltwaterDisposalAssetsMember" abstract="true" name="CertainSaltwaterDisposalAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CertainFreshwaterWaterSolutionsFacilitiesMember" abstract="true" name="CertainFreshwaterWaterSolutionsFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_NumberOfAcresSold" abstract="false" name="NumberOfAcresSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ngl_NumberOfRanchesSold" abstract="false" name="NumberOfRanchesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ngl_CertainRealEstateMember" abstract="true" name="CertainRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CertainInvestmentsInUnconsolidatedEntitiesAndRelatedAssetsMember" abstract="true" name="CertainInvestmentsInUnconsolidatedEntitiesAndRelatedAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_PacificNorthwestNaturalGasLiquidsTerminalsMember" abstract="true" name="PacificNorthwestNaturalGasLiquidsTerminalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_OtherNaturalGasLiquidsTerminalsMember" abstract="true" name="OtherNaturalGasLiquidsTerminalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_GreenBayWisconsinNaturalGasLiquidsTerminalsAndRelatedAssetsMember" abstract="true" name="GreenBayWisconsinNaturalGasLiquidsTerminalsAndRelatedAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_RefinedProductsBusinessAndPortionOfWholesaleBusinessMember" abstract="true" name="RefinedProductsBusinessAndPortionOfWholesaleBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_CertainRailcarsMember" abstract="true" name="CertainRailcarsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ngl_TotalNumberOfRailcarsSold" abstract="false" name="TotalNumberOfRailcarsSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ngl_TotalNumberOfRailcarsToBeSold" abstract="false" name="TotalNumberOfRailcarsToBeSold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ngl_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetCurrent" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DisposalGroupIncludingDiscontinuedOperationValuationAllowanceOnAssetsHeldForSale" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationValuationAllowanceOnAssetsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilityCurrent" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilityNoncurrent" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ngl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
