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        <RelatedOrExemptFuncIncomeAmt>3066360</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>611600</BusinessCd>
        <TotalRevenueColumnAmt>277625</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>277625</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>ADMINISTRATIVE FEES</Desc>
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        <TotalRevenueColumnAmt>39600</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>39600</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>REGISTRATION FEES</Desc>
        <BusinessCd>611600</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>30550</RelatedOrExemptFuncIncomeAmt>
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        <ExclusionAmt>340777</ExclusionAmt>
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      <GainOrLossGrp>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>357535</TotalRevenueColumnAmt>
        <ExclusionAmt>357535</ExclusionAmt>
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        <RelatedOrExemptFuncIncomeAmt>3414135</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>698312</ExclusionAmt>
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      <GrantsToDomesticOrgsGrp>
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      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>25200</TotalAmt>
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      <CompCurrentOfcrDirectorsGrp>
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        <TotalAmt>199404</TotalAmt>
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        <TotalAmt>25834</TotalAmt>
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        <TotalAmt>52431</TotalAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>51305</TotalAmt>
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      <FeesForServicesLegalGrp>
        <TotalAmt>41008</TotalAmt>
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      <FeesForServicesAccountingGrp>
        <TotalAmt>28260</TotalAmt>
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      <FeesForServicesLobbyingGrp>
        <TotalAmt>5250</TotalAmt>
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        <Desc>DUES</Desc>
        <TotalAmt>608597</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>LOSS ON DISPOSAL OF PRO</Desc>
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        <Desc>PROXY TAX</Desc>
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        <EOYAmt>1616</EOYAmt>
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        <EOYAmt>93981</EOYAmt>
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        <EOYAmt>13215981</EOYAmt>
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      <MethodOfAccountingOtherInd methodOfAccountingOtherDesc="Modified cash basis">X</MethodOfAccountingOtherInd>
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        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
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      <DuesAssessmentsAmt>277625</DuesAssessmentsAmt>
      <NonDeductibleLbbyngPltclCYAmt>5250</NonDeductibleLbbyngPltclCYAmt>
      <NonDeductibleLbbyngPltclTotAmt>5250</NonDeductibleLbbyngPltclTotAmt>
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        <OtherCostOrOtherBasisAmt>168342</OtherCostOrOtherBasisAmt>
        <BookValueAmt>168342</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
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        <DepreciationAmt>1159453</DepreciationAmt>
        <BookValueAmt>1770175</BookValueAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedFinclStmtAmt>15820</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>4112447</TotalRevenuePerForm990Amt>
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      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>3611715</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>15820</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>15820</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>3627535</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCIAL STATEMENT EFFECTS OF A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN ARE RECOGNIZED IN THE FINANCIAL STATEMENTS WHEN IT IS MORE LIKELY THAN NOT, BASED ON THE TECHNICAL MERITS, THAT THE POSITION WILL BE SUSTAINED UPON EXAMINATION. AS OF SEPTEMBER 30, 2024, THE ASSOCIATION HAD NO UNCERTAIN TAX POSITIONS THAT QUALIFY FOR RECOGNITION OR DISCLOSURE IN THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
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      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>JOHN R GENTILLE FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1385 PICCARD DR</AddressLine1Txt>
          <CityNm>ROCKVILLE</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>208504340</ZIPCd>
        </USAddress>
        <RecipientEIN>521646891</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>12500</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>BUILD STRONG WORKING RELATIONSHIPS WITH MANY INDUSTRY PRACTITIONERS, ACADEMICS, MANUFACTURER/SUPPLIER REPRESENTATIVES, AND INDUSTRY CONSULTANTS. THESE STRONG AND VARIED RELATIONSHIPS PROVIDE MCERF WITH A VITAL INFORMATION GATHERING/SHARING BASE. OUR PARTNERS GUIDE AND ENLIGHTEN US AS TO THE MOST PRESSING EDUCATION AND RESEARCH ISSUES FACING OUR INDUSTRY.</PurposeOfGrantTxt>
      </RecipientTable>
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      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SCHOLARSHIP</GrantTypeTxt>
        <RecipientCnt>63</RecipientCnt>
        <CashGrantAmt>25200</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE IS A COMMITTEE THAT REVIEWS THE APPLICATIONS FOR ALL SCHOLARSHIPS TO DETERMINE THE RECIPIENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN RAYBURN</PersonNm>
        <TitleTxt>EXECUTIVE VICE PRESIDENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>342500</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>15000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2509</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>42900</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>21738</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>424647</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DANIEL BULLEY</PersonNm>
        <TitleTxt>SR VICE PRES/INTERIM EVP</TitleTxt>
        <BaseCompensationFilingOrgAmt>156750</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>17000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2646</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22929</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23456</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>222781</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS MADE UP OF ONE CLASS OF MEMBERS WHO PAY DUES ANNUALLY TO RECEIVE BENEFITS. INDIVIDUALS WHO ARE NO LONGER ACTIVE IN MECHANICAL CONTRACTING AND HAVE RENDERED UNUSUAL AND OUTSTANDING SERVICES TO THE ASSOCIATION MAY BE ELECTED BY MEMBERS AS LIFE MEMBERS. LIFE MEMBERS DO NOT PAY DUES AND DO NOT HAVE VOTING PRIVILEGES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL OFFICERS AND DIRECTORS SHALL BE ELECTED BY THE MEMBERS AT THE ANNUAL MEETING OF THE ASSOCIATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR TO SUBMISSION TO THE IRS THE FORM 990 IS PROVIDED TO THE BOARD FOR REVIEW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL TRUSTEES SIGN A CONFLICT OF INTEREST FORM ANNUALLY, AND ARE REQUIRED TO DISCLOSE CONFLICTS OF INTEREST WHEN THEY BECOME AWARE OF ANY POTENTIAL CONFLICT OF INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>ALTHOUGH THE ASSOCIATION DOES NOT HAVE ITS OWN WRITTEN COMPENSATION POLICY IT DOES USE THE SURVEY PUT OUT BY ASAE. IT IS VERBALLY AGREED ON TO BASE THE RAISES ON COST OF LIVING AND THE BONUSES ARE BASED ON PERFORMANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL GOVERNING DOCUMENTS, POLICIES, AND FINANCIAL STATEMENTS WILL BE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHICAGO AREA MECHANICAL CONTRACTING INDUSTRY IMPROVEMENT TRUST</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>7065 VETERANS BLVD</AddressLine1Txt>
          <CityNm>BURR RIDGE</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>605275624</ZIPCd>
        </USAddress>
        <EIN>363119979</EIN>
        <PrimaryActivitiesTxt>EDUCATING THE MECHANICAL CONTRACTING INDUSTRY IN CHICAGO</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(6)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MECHANICAL CONTRACTORS ASSOCIATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>1</ControlledOrganizationInd>
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      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
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      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
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      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
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        <OtherOrganizationName>
          <BusinessNameLine1Txt>CHICAGO AREA MECHANICAL CONTRACTING INDUSTRY IMPROVEMENT TRUST</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>L</TransactionTypeTxt>
        <InvolvedAmt>3066360</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FUNDS RECEIVED</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
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</Return>