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      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
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        <EOYAmt>93637</EOYAmt>
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        <EOYAmt>311919</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>-56968</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
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        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleD documentId="RetDoc2">
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>2673</OtherCostOrOtherBasisAmt>
        <BookValueAmt>2673</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>2673</TotalBookValueLandBuildingsAmt>
      <TotalRevEtcAuditedFinclStmtAmt>679318</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>679318</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>679318</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>736286</TotExpnsEtcAuditedFinclStmtAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE OF CLEAN AIR COMPANIES, INC. HAS ADOPTED THE ACCOUNTING OF UNCERTAINTY IN INCOME TAXES AS REQUIRED BY THE INCOME TAXES TOPIC (TOPIC 740) OF THE FINANCIAL ACCOUNTING STANDARDS BOARD (FASB) ACCOUNTING STANDARDS CODIFICATION (ASC). THE INSTITUTE OF CLEAN AIR COMPANIES, INC. HAS ANALYZED ITS TAX POSITIONS, AND HAS CONCLUDED THAT NO LIABILITY FOR UNRECOGNIZED TAX BENEFITS SHOULD BE RECORDED RELATED TO ANY UNCERTAIN TAX POSITIONS TAKEN ON RETURNS FILED FOR OPEN TAX YEARS (2010-2012), OR EXPECTED TO BE TAKEN IN ITS 2013 TAX RETURN. THE INSTITUTE OF CLEAN AIR COMPANIES, INC. IS NOT AWARE OF ANY TAX POSITIONS FOR WHICH IS BELIEVES THAT THERE IS A REASONABLE POSSIBILITY THAT THE TOTAL AMOUNTS OF UNRECOGNIZED TAX BENEFITS WILL CHANGE MATERIALLY IN THE NEXT TWELVE MONTHS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>TO BE THE VOICE OF THE STATIONARY SOURCE AIR POLLUTION CONTROL AND MONITORING INDUSTRY BY PROVIDING TECHNICAL INFORMATION RELEVANT TO FLEXIBLE CLEAN AIR POLICIES BASED ON PRACTICAL, ACHIEVABLE AND MEASURABLE EMISSIONS LIMITATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS ENTERED INTO A MANAGEMENT CONTRACT WITH SMITHBUCKLIN. UNDER THE TERMS OF THIS CONTRACT, INSTITUTE OF CLEAN AIR COMPANIES, INC. MAKES PAYMENTS TO SMITHBUCKLIN WHICH COVER STAFF SALARIES AND OTHER OVERHEAD EXPENSES. THE FEES INCURRED BY INSTITUTE OF CLEAN AIR COMPANIES, INC. DURING THE FISCAL YEAR WERE 575,181. SMITHBUCKLIN'S PERFORMANCE UNDER THIS AGREEMENT IS MONITORED BY THE BOARD OF INSTITUTE OF CLEAN AIR COMPANIES, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MANAGEMENT COMPANY REVIEWS THE 990 ALONG WITH THE EXECUTIVE DIRECTOR AND A COPY OF THE 990 IS SENT TO THE BOARD PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>IN CONNECTION WITH ANY ACTUAL OR POSSIBLE CONFLICT OF INTEREST, AN INTERESTED PERSON MUST DISCLOSE THE EXISTENCE OF THE FINANCIAL INTEREST AND BE GIVEN THE OPPORTUNITY TO DISCLOSE ALL MATERIAL FACTS TO THE DIRECTORS AND MEMBERS OF COMMITTEES WITH GOVERNING BOARD DELEGATED POWERS CONSIDERING THE PROPOSED TRANSACTION OR ARRANGEMENT. THE REMAINING BOARD OR COMMITTEE MEMBERS SHALL DECIDE IF A CONFLICT OF INTEREST EXISTS. AFTER DISCLOSURE OF THE FINANCIAL INTEREST AND ALL MATERIAL FACTS, AND AFTER ANY DISCUSSION WITH THE INTERESTED PERSON, HE/SHE SHALL LEAVE THE GOVERNING BOARD OR COMMITTEE MEETING WHILE THE DETERMINATION OF A CONFLICT OF INTEREST IS DISCUSSED AND VOTED UPON.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>