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  <xs:element name="TaxesSoughtOnUncollectedLicenseFees" id="dgas_TaxesSoughtOnUncollectedLicenseFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="PenaltiesSoughtOnUncollectedLicenseFees" id="dgas_PenaltiesSoughtOnUncollectedLicenseFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="InterestSoughtOnUncollectedLicensesFees" id="dgas_InterestSoughtOnUncollectedLicensesFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="UtilityGrossReceiptsLicenseTaxRate" id="dgas_UtilityGrossReceiptsLicenseTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="EstimatedLiabilityForTaxes" id="dgas_EstimatedLiabilityForTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="AmountBilledToCustomersForUtilityGrossReceiptsLicenseTax" id="dgas_AmountBilledToCustomersForUtilityGrossReceiptsLicenseTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ExpenseRelatedToInterestAndCollectibles" id="dgas_ExpenseRelatedToInterestAndCollectibles" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="UnbilledReceivableNetOfAllowanceForUncollectibleAmounts" id="dgas_UnbilledReceivableNetOfAllowanceForUncollectibleAmounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="ReceivablesRelatedToRightOnReimbursementOfTaxesFromRelatedPartyCustomer" id="dgas_ReceivablesRelatedToRightOnReimbursementOfTaxesFromRelatedPartyCustomer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="StockSplitDateDeclared" id="dgas_StockSplitDateDeclared" type="xbrli:dateItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="StockSplitDateOfRecord" id="dgas_StockSplitDateOfRecord" type="xbrli:dateItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
</xs:schema>
