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      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleD documentId="RetDoc2">
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        <Desc>ACCRUED COMPENSATED ABSENCES</Desc>
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        <Desc>OTHER CURRENT LIABILITIES</Desc>
        <Amt>16500</Amt>
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        <Desc>PAYROLL TAX LIABILITIES</Desc>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>THE UNION HAS ANALYZED THE TAX POSITIONS AND HAS CONCLUDED THAT THERE ARE NO UNCERTAIN POSITIONS TAKEN OR EXPECTED TO BE TAKEN THAT WOULD REQUIRE RECOGNITION OF A LIABILITY (OR ASSET) OR DISCLOSURE IN THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 4, PART XII, LINE 2D</FormAndLineReferenceDesc>
        <ExplanationTxt>TRANSFERS TO BUILDING CORPORATION 64,000</ExplanationTxt>
      </SupplementalInformationDetail>
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      </RltdOrgOfficerTrstKeyEmplGrp>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AS OF DECEMBER 31, 2023, THE LOCAL HAD 678 MEMBERS. THE CLASSES OF MEMBERS ARE: JOURNEYMEN, STATIONARY ENGINEERS, AND APPRENTICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS IN GOOD STANDING ARE ABLE TO ELECT TRUSTEES EVERY THREE YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE UNION'S EXECUTIVE BOARD REVIEWS THE 990 BEFORE IT IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION IS SET BY THE EXECUTIVE BOARD AND APPROVED BY THE MEMBERSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER OFFICERS ARE NOT PAID BUT COMPENSATION FOR EMPLOYEES IS DETERMINED BY THE BUSINESS MANAGER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DOCUMENTS ARE AVAILABLE UPON REQUEST FROM THE UNION'S ADMINISTRATIVE OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>TRANSFERS TO BUILDING CORPORATION -64,000</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>OPER ENG LOCAL 571 BLDG CORP</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>4660 S 60TH AVENUE</AddressLine1Txt>
          <CityNm>OMAHA</CityNm>
          <StateAbbreviationCd>NE</StateAbbreviationCd>
          <ZIPCd>68117</ZIPCd>
        </USAddress>
        <EIN>470733546</EIN>
        <PrimaryActivitiesTxt>LESSOR</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NE</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501C2</ExemptCodeSectionTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
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      </IdRelatedTaxExemptOrgGrp>
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      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
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      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>true</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
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        <MethodOfAmountDeterminationTxt>RENT AGREEMENT</MethodOfAmountDeterminationTxt>
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</Return>
