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      <SubstantiallyAllDuesNondedInd>1</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>0</AgreeCarryoverPriorYearInd>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>267651</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>7747</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>7747</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>259904</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>1167</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>1167</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>261071</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>282090</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>282090</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>1167</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>1167</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>283257</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ASSOCIATION IS A TAX-EXEMPT ENTITY UNDER SECTION 501(C)(6) OF THE INTERNAL REVENUE CODE AND IS NOT SUBJECT TO TAX UNDER PRESENT INCOME TAX LAWS. THE ASSOCIATION HAS BEEN CLASSIFIED AS AN ORGANIZATION THAT IS NOT A PRIVATE FOUNDATION. THE ASSOCIATION'S MANAGEMENT BELIEVES IT IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS FOR YEARS PRIOR TO 2020.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>JEFF GAECKE - ORGANIZATION MANAGEME</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>JEFF IS THE EXECUTIVE VP OF THE ASSOCIATION AND THE 100% SHAREHOLDER OF OMS</RelationshipDescriptionTxt>
        <TransactionAmt>36000</TransactionAmt>
        <TransactionDesc>ORGANIZATION MANAGEMENT INC. (OMS) IS OWNED 100% BY JEFF GAECKE. MECHANICAL CONTRACTORS ASSOCIATION OF WISCONSIN, INC. PAID $36,000 FOR MANAGEMENT SERVICES TO OMS. THE TYPE OF MANAGEMENT SERVICES ARE DISCUSSED ON SCHEDULE O.</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FUND CONTRACTS WITH ORGANIZATIONAL MANAGEMENT SERVICES, INC. ("OMS") FOR ADMINISTRATIVE AND MANAGEMENT SERVICES, INCLUDING, BUT NOT LIMITED TO, PROVIDING A STAFF MEMBER TO ACT AS EXECUTIVE VICE PRESIDENT OF THE ASSOCIATION, ESTABLISHING AND MAINTAINING THE BOOKS, GUIDING AND ASSISTING IN THE PREPARATION OF ANNUAL BUDGETS, AND PREPARING AND DISTRIBUTING FINANCIAL STATEMENTS TO THE BOARD OF DIRECTORS. EXECUTIVE VICE PRESIDENT, JEFF GAECKE, IS EMPLOYED BY OMS AND RECEIVES $36,000 AS COMPENSATION FOR HIS SERVICES TO THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE THREE CLASSES OF MEMBERS: ACTIVE, ASSOCIATE, AND HONORARY WITH ONLY ACTIVE MEMBERS HAVING VOTING RIGHTS. THE PRESIDENT APPOINTS A NOMINATING COMMITTEE OF THREE ACTIVE MEMBERS IN GOOD STANDING WHO THEN PRESENTS A LIST OF NOMINEES FOR ELECTION TO THE BOARD OF DIRECTORS. NOMINATIONS MAY BE OFFERED FROM THE FLOOR BY ANY ACTIVE MEMBER OF GOOD STANDING AND, IF SO ORDERED, ELECTIONS FOR SUCH CONTESTED OFFICES SHALL BE HAD BY SECRET BALLOT - A MAJORITY OF THOSE VOTING BEING NECESSARY TO ELECT IN EACH CASE. THE BOARD OF DIRECTORS ELECTS THE OFFICERS. NO OTHER DECISIONS ARE APPROVED OR RATIFIED BY THE MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE THREE CLASSES OF MEMBERS: ACTIVE, ASSOCIATE, AND HONORARY WITH ONLY ACTIVE MEMBERS HAVING VOTING RIGHTS. THE PRESIDENT APPOINTS A NOMINATING COMMITTEE OF THREE ACTIVE MEMBERS IN GOOD STANDING WHO THEN PRESENTS A LIST OF NOMINEES FOR ELECTION TO THE BOARD OF DIRECTORS. NOMINATIONS MAY BE OFFERED FROM THE FLOOR BY ANY ACTIVE MEMBER OF GOOD STANDING AND, IF SO ORDERED, ELECTIONS FOR SUCH CONTESTED OFFICES SHALL BE HAD BY SECRET BALLOT - A MAJORITY OF THOSE VOTING BEING NECESSARY TO ELECT IN EACH CASE. THE BOARD OF DIRECTORS ELECTS THE OFFICERS. NO OTHER DECISIONS ARE APPROVED OR RATIFIED BY THE MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>EXECUTIVE VICE PRESIDENT REVIEWS, SIGNS, AND THEN THE FORM 990 IS SUBMITTED FOR FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL ACTUAL AND POTENTIAL CONFLICTS OF INTERESTS AND DISCLOSED BY BOARD MEMBERS TO THE ASSOCIATION PRESIDENT AND/OR EXECUTIVE VICE PRESIDENT THROUGH THE ANNUAL DISCLOSURE FORM AND/OR WHENEVER A CONFLICT ARISES. THE ASSOCIATION EXECUTIVE COMMITTEE THEN MAKES A DETERMINATION AS TO WHETHER A CONFLICT EXISTS AND WHAT SUBSEQUENT ACTION IS APPROPRIATE (IF ANY). THE EXECUTIVE COMMITTEE INFORMS THE BOARD OF THEIR DETERMINATION AND ACTION AND THE BOARD RETAINS THE RIGHT TO MODIFY OR REVERSE SUCH DETERMINATION AND ACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>COPIES OF THE GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE PROVIDED TO ALL MEETING ATTENDEES AND ARE ALSO MADE AVAILABLE TO ALL OTHERS UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ASSOCIATION USES THE MODIFIED CASH BASIS OF ACCOUNTING. THIS METHOD HAS NOT CHANGED FROM THE PRIOR YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>OMS (SEE PART VI, SECTION A, LINE 3 ABOVE) ASSUMES THE RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF THE FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>