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        <FormAndLineReferenceDesc>FORM 990 PART IV, LINE 12 &amp; PART XII, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>ALTHOUGH THE FINANCIAL STATEMENTS OF THE TRUST, AS SUCH, WERE NOT REVIEWED BY AN INDEPENDENT ACCOUNTANT, THE FINANCIAL ACTIVITY OF THE TRUST IS INCORPORATED INTO THE FINANCIAL STATEMENTS OF THE ERISA WELFARE BENEFIT PLANS TO WHICH THE TRUST RELATES, AND THE ANNUAL FINANCIAL STATEMENTS OF THOSE PLANS ARE AUDITED BY AN INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IV, LINE 12 &amp; PART XII, LINE 2 CONTINUED</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PLAN SPONSOR HAS A COMMITTEE THAT IS RESPONSIBLE FOR THE OVERSIGHT OF THE AUDIT OF THOSE FINANCIAL STATEMENTS AND THE SELECTION OF THE INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VI, SECTION A, LINES 1A &amp; 1B &amp; PART VII</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BANK OF NEW YORK MELLON SERVES AS THE SOLE DIRECTED TRUSTEE OF THE AMERICAN ELECTRIC POWER SYSTEM RETIREE MEDICAL TRUST FOR CERTAIN UNION EMPLOYEES. THE PLAN SPONSOR IS AMERICAN ELECTRIC POWER SERVICE CORPORATION. THE TRUST IS ADMINISTERED BY THE PLAN SPONSOR IN ACCORDANCE WITH THE TERMS OF THE TRUST AGREEMENT. AS SUCH THE VEBA DOES NOT HAVE A GOVERNING BODY THAT EXERCISES DISCRETION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VI, SECTIONS A &amp; B, LINES 8, 12-15</FormAndLineReferenceDesc>
        <ExplanationTxt>THESE QUESTIONS ARE NOT APPLICABLE TO THE TRUST. ADDITIONALLY, THE TRUST DOES NOT HAVE ANY EMPLOYEES, THEREFORE, NO PROCESSES RELATED TO EMPLOYEE COMPENSATION ARE IN PLACE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>A COMPLETE ELECTRONIC COPY OF THE ORGANIZATION'S FORM 990 WAS PROVIDED TO THE TRUSTEE FOR REVIEW PRIOR TO FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VII, SECTION A, LINE 1A COLUMN (B)</FormAndLineReferenceDesc>
        <ExplanationTxt>AVERAGE HOURS PER WEEK DEVOTED TO POSITION AS TRUSTEE: THE BANK OF NEW YORK MELLON PROVIDES ADMINISTRATIVE SERVICES SUCH AS ACTING AS INVESTMENT MANAGER FOR THE AMERICAN ELECTRIC POWER SYSTEM RETIREE MEDICAL TRUST FOR CERTAIN UNION EMPLOYEES. THESE SERVICES REQUIRE NUMEROUS INDIVIDUAL BANK EMPLOYEES' INVOLVEMENT IN THE ACTIVITIES OF THE ORGANIZATION AND THUS CANNOT BE QUANTIFIED ON AN HOURLY BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VII, SECTION A, LINE 1A COLUMN (B) CONTINUED</FormAndLineReferenceDesc>
        <ExplanationTxt>THEREFORE, THE TRUSTEE'S FEES ARE NOT BASED UPON HOURLY BASIS, BUT ARE CALCULATED BASED UPON FACTORS SUCH AS THE MARKET VALUE OF THE ACCOUNT AND IN ACCORDANCE WITH THE BANK OF NEW YORK MELLON'S AGREEMENT WITH AMERICAN ELECTRIC POWER SYSTEM SERVICE CORPORATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART XII, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>MODIFIED CASH BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AS A 501 (C)(9) ORGANIZATION THE TRUST IS NOT REQUIRED TO MAKE THE DOCUMENTS REFERENCED IN QUESTION 19 AVAILABLE TO THE GENERAL PUBLIC.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>AEP SERVICE CORPORATION</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1 RIVERSIDE PLAZA</AddressLine1Txt>
          <CityNm>COLUMBUS</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>43215</ZIPCd>
        </USAddress>
        <EIN>134922641</EIN>
        <PrimaryActivitiesTxt>MGMT &amp; ADMIN</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <EntityTypeTxt>C corp</EntityTypeTxt>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>