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      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Le Consulting</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>9941 Scripps Westview Way</AddressLine1Txt>
            <CityNm>San Diego</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>92131</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Consulting Services</ServicesDesc>
        <CompensationAmt>263391</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Kate Frances Smiles</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1134 N Saint Paul St</AddressLine1Txt>
            <CityNm>Denver</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>80206</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Consulting Services</ServicesDesc>
        <CompensationAmt>169058</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Dennis Mahoney Consulting LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
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            <CityNm>Lafayette</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94549</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Consulting Services</ServicesDesc>
        <CompensationAmt>167107</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Tom Knox</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>619 Lake Wilhaggin Drive</AddressLine1Txt>
            <CityNm>Sacramento</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>95864</ZIPCd>
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        </ContractorAddress>
        <ServicesDesc>Consulting Services</ServicesDesc>
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      <CntrctRcvdGreaterThan100KCnt>4</CntrctRcvdGreaterThan100KCnt>
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        <BusinessCd>611710</BusinessCd>
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      </RoyaltiesRevenueGrp>
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      <FeesForServicesAccountingGrp>
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      <FeesForServicesProfFundraising>
        <TotalAmt>0</TotalAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
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      <AdvertisingGrp>
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      <InformationTechnologyGrp>
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      <RoyaltiesGrp>
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      <OccupancyGrp>
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        <ManagementAndGeneralAmt>106100</ManagementAndGeneralAmt>
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      <TravelGrp>
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      <ConferencesMeetingsGrp>
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      <InterestGrp>
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      <PaymentsToAffiliatesGrp>
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        <TotalAmt>974336</TotalAmt>
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        <FundraisingAmt>57330</FundraisingAmt>
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      <OtherExpensesGrp>
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        <TotalAmt>116900</TotalAmt>
        <ProgramServicesAmt>116900</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Fiscal sponsor fee</Desc>
        <TotalAmt>39828</TotalAmt>
        <ProgramServicesAmt>39828</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Travel and parking</Desc>
        <TotalAmt>34980</TotalAmt>
        <ProgramServicesAmt>7166</ProgramServicesAmt>
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        <FundraisingAmt>5122</FundraisingAmt>
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        <ProgramServicesAmt>5199</ProgramServicesAmt>
        <ManagementAndGeneralAmt>27178</ManagementAndGeneralAmt>
        <FundraisingAmt>9215</FundraisingAmt>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>1479082</ProgramServicesAmt>
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      <SavingsAndTempCashInvstGrp>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>211710</EOYAmt>
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      <AccountsReceivableGrp>
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      <ReceivablesFromOfficersEtcGrp>
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      <RcvblFromDisqualifiedPrsnGrp>
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      <OthNotesLoansReceivableNetGrp>
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      <InventoriesForSaleOrUseGrp>
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      <PrepaidExpensesDefrdChargesGrp>
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      <LandBldgEquipCostOrOtherBssAmt>8100</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>4888</LandBldgEquipAccumDeprecAmt>
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      <DonorRestrictionNetAssetsGrp>
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      <ReconcilationRevenueExpnssAmt>-303847</ReconcilationRevenueExpnssAmt>
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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
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      <SubstantialContributorsTotAmt>0</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>6794828</PublicSupportTotal170Amt>
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        <ContributorNum>RESTRICTED</ContributorNum>
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          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
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          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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      <VolunteersInd>false</VolunteersInd>
      <PaidStaffOrManagementInd>true</PaidStaffOrManagementInd>
      <MediaAdvertisementsInd>false</MediaAdvertisementsInd>
      <MailingsMembersInd>false</MailingsMembersInd>
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      <RalliesDemonstrationsInd>true</RalliesDemonstrationsInd>
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      <OtherActivitiesInd>false</OtherActivitiesInd>
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      <NotDescribedSection501c3Ind>false</NotDescribedSection501c3Ind>
      <Form4720Filed4912TaxInd>false</Form4720Filed4912TaxInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II-B, Line 1i - Other Activities Description</FormAndLineReferenceDesc>
        <ExplanationTxt>Coalition for Clean Air (CCA) supported legislation in California promoting public health, air quality, and climate protection and opposed legislative proposals that would adversely affect those objectives. CCA supported bills in the California legislature that would change transportation funding and planning to achieve air and climate pollution emission reductions, phase out the use of lead in aviation gasoline, and protect and increase funding and programs that support clean vehicles, clean fuels, and supporting infrastructure development. CCA also supported a state ballot measure to establish a bond to fund climate protection and adaptation.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV - Additional Information</FormAndLineReferenceDesc>
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      <OtherAssetsOrgGrp>
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      <TotalBookValueOtherAssetsAmt>218353</TotalBookValueOtherAssetsAmt>
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        <Desc>Accrued Payroll and Rel Liabilities</Desc>
        <Amt>78295</Amt>
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      <OtherLiabilitiesOrgGrp>
        <Desc>Operating lease liability</Desc>
        <Amt>283949</Amt>
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      <OtherLiabilitiesOrgGrp>
        <Desc>Rounding</Desc>
        <Amt>2</Amt>
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      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>2146994</TotalRevEtcAuditedFinclStmtAmt>
      <OtherRevenueAmt>-2054</OtherRevenueAmt>
      <RevenueNotReportedAmt>-2054</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>2149048</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>2149048</TotalRevenuePerForm990Amt>
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      <ExpensesSubtotalAmt>2452895</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>2452895</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>Coalition for Clean Air is exempt from Federal income taxes under Section 501(c)(3) of the Internal Revenue Code and California income taxes under section 23701(d) of the California Revenue and Taxation Code. The IRS classified the organization as one that is not a private foundation within the meaning of section 509(a) of the Code because it is an organization described in section(s) 509(a)(1) and 170(b)(1)(A)(vi).Coalition for Clean Air has adopted Financial Accounting Standards Board Accounting Standards Codification (ASC) Section 740-10, which clarifies the accounting for uncertainty in income taxes. ASC Section 740-10 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. ASC Section 740-10 requires that an organization recognize in the financial statements the impact of the tax position if that position will more likely than not be sustained on audit, based on the technical merits of the position. As of and for the year ended June 30, 2025, Coalition for Clean Air had no material unrecognized tax benefits, tax penalties or interest.Coalition for Clean Airs Forms 990, Return of Organization Exempt from Income Tax, for each of the tax years ended June 30, 2024, 2023, and 2022, are subject to examination by the IRS, generally for 3 years after they were filed.Coalition for Clean Airs Forms 199, California Exempt Organization Return, for each of the tax years ended June 30, 2024, 2023, 2022, and 2021, are subject to examination by the IRS, generally for 4 years after they were filed.</ExplanationTxt>
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      <MailSolicitationsInd>X</MailSolicitationsInd>
      <EmailSolicitationsInd>X</EmailSolicitationsInd>
      <InPersonSolicitationsInd>X</InPersonSolicitationsInd>
      <SolicitationOfNonGovtGrantsInd>X</SolicitationOfNonGovtGrantsInd>
      <SolicitationOfGovtGrantsInd>X</SolicitationOfGovtGrantsInd>
      <SpecialFundraisingEventsInd>X</SpecialFundraisingEventsInd>
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        <Event1Nm>Clean Air Awards</Event1Nm>
        <GrossReceiptsEvent1Amt>170086</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>170086</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>20889</RentFacilityCostsEvent1Amt>
        <OtherDirectExpensesEvent1Amt>11934</OtherDirectExpensesEvent1Amt>
        <Event2Nm>Toast to Clearing the Air</Event2Nm>
        <GrossReceiptsEvent2Amt>150250</GrossReceiptsEvent2Amt>
        <GrossRevenueEvent2Amt>150250</GrossRevenueEvent2Amt>
        <OtherDirectExpensesEvent2Amt>100</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>1</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>25000</GrossReceiptsOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>25000</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>9094</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>345336</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>345336</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>20889</RentFcltyCostsTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>21128</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>42017</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>303319</NetIncomeSummaryAmt>
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      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
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      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
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        <PersonNm>Joseph K Lyou</PersonNm>
        <TitleTxt>President &amp; CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>165362</BaseCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>4234</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>17170</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>186766</TotalCompensationFilingOrgAmt>
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    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="24020490" softwareVersionNum="2024v5.2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 is prepared by an independent accounting firm, then reviewed and approved by management. A copy of the final Form 990 is then provided to all board members prior to it being filed.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>A conflict of interest policy has been approved by the Board of Directors. A conflict of interest disclosure statement is furnished annually to each director, officer and key employee. The forms are reviewed and signed with any conflicts noted and returned to a staff member who handles board affairs.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>The compensation of the organization's CEO is approved by the board of directors, after review of a survey of comparable salaries paid by similarly situated organizations. The board members are independent and their decisions are contemporaneously documented. The CEO approves compensation for other employees. He is independent and his decisions are contemporaneously documented.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing documents, conflict of interest policies, and financial statements are available to executive staff and the Board of Directors. Upon request from the general public, Coalition for Clean Air will provide access to these documents as required by law.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>No documents available to the public.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Adjustment to property and equipment adjustment = -$2054</ExplanationTxt>
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