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      <Form990PartVIISectionAGrp>
        <PersonNm>Kim Shelley</PersonNm>
        <TitleTxt>Director (6/23 - 9/23)</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>0</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Scott Thompson</PersonNm>
        <TitleTxt>Director</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>4.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Laura Watson</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Carolyn Hanson</PersonNm>
        <TitleTxt>Deputy Executive Director</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Benjamin Grumbles</PersonNm>
        <TitleTxt>Executive Director</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Patricia Reyes</PersonNm>
        <TitleTxt>ITRC Director (ending 06/23)</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Lia Parisien</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Kurt Rakouskas</PersonNm>
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        <OtherCompensationAmt>15395</OtherCompensationAmt>
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        <Desc>Meeting Registrations</Desc>
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        <Desc>Sponsorship</Desc>
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      <GrantsToDomesticOrgsGrp>
        <TotalAmt>50518</TotalAmt>
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        <TotalAmt>640212</TotalAmt>
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        <TotalAmt>484536</TotalAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>105144</TotalAmt>
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      <OtherEmployeeBenefitsGrp>
        <TotalAmt>143669</TotalAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>141453</TotalAmt>
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      <FeesForServicesAccountingGrp>
        <TotalAmt>34500</TotalAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>11344</TotalAmt>
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        <TotalAmt>41826</TotalAmt>
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      <OfficeExpensesGrp>
        <TotalAmt>20126</TotalAmt>
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      <InformationTechnologyGrp>
        <TotalAmt>33980</TotalAmt>
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      <OccupancyGrp>
        <TotalAmt>168687</TotalAmt>
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      <TravelGrp>
        <TotalAmt>132332</TotalAmt>
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      <ConferencesMeetingsGrp>
        <TotalAmt>247561</TotalAmt>
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      <DepreciationDepletionGrp>
        <TotalAmt>3625</TotalAmt>
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      <InsuranceGrp>
        <TotalAmt>2186</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>Communication</Desc>
        <TotalAmt>46209</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>Other expenses</Desc>
        <TotalAmt>6749</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>Bad Debt Expenese</Desc>
        <TotalAmt>150</TotalAmt>
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      <TotalFunctionalExpensesGrp>
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        <EOYAmt>121727</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>63081</EOYAmt>
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      <LandBldgEquipBasisNetGrp>
        <BOYAmt>34145</BOYAmt>
        <EOYAmt>28753</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>861231</EOYAmt>
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        <EOYAmt>1383420</EOYAmt>
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      <TotalAssetsGrp>
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        <EOYAmt>4049390</EOYAmt>
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        <EOYAmt>41274</EOYAmt>
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        <EOYAmt>1532024</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>1790377</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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        <EOYAmt>2238702</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
        <EOYAmt>20311</EOYAmt>
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        <BOYAmt>2128579</BOYAmt>
        <EOYAmt>2259013</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>2532623</BOYAmt>
        <EOYAmt>4049390</EOYAmt>
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      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
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      <FederalGrantAuditRequiredInd>1</FederalGrantAuditRequiredInd>
      <FederalGrantAuditPerformedInd>1</FederalGrantAuditPerformedInd>
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    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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      <OnlyInHouseLobbyingInd>1</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>0</AgreeCarryoverPriorYearInd>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
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        <DepreciationAmt>25159</DepreciationAmt>
        <BookValueAmt>28753</BookValueAmt>
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      <TotalBookValueLandBuildingsAmt>28753</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>Due from ERIS</Desc>
        <BookValueAmt>25421</BookValueAmt>
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      <OtherAssetsOrgGrp>
        <Desc>Security Deposits</Desc>
        <BookValueAmt>38551</BookValueAmt>
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      <OtherAssetsOrgGrp>
        <Desc>Right-of-use asset - operating lease</Desc>
        <BookValueAmt>1319448</BookValueAmt>
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      <TotalBookValueOtherAssetsAmt>1383420</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>Lease Liability-Operating Lease</Desc>
        <Amt>1532024</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1532024</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ECOS is recognized as a tax-exempt organization under Section 501(c)(6) of the Internal Revenue Code (IRC) and is exempt from income taxes except on unrelated business activities. No provision for income taxes has been made as there were no unrelated business activities during the years ended September 30, 2023 and 2022.</ExplanationTxt>
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    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Georgia Department of Natural Resources</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2 Martin Luther King Jr Drive</AddressLine1Txt>
          <CityNm>Atlanta</CityNm>
          <StateAbbreviationCd>GA</StateAbbreviationCd>
          <ZIPCd>30334</ZIPCd>
        </USAddress>
        <RecipientEIN>581130945</RecipientEIN>
        <IRCSectionDesc>Gov't</IRCSectionDesc>
        <CashGrantAmt>11800</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Assist with the development and testing of the Combined Air Emissions Reporting system.</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Minnesota Pollution Control Agency</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>520 Lafayette Road</AddressLine1Txt>
          <CityNm>St Paul</CityNm>
          <StateAbbreviationCd>MN</StateAbbreviationCd>
          <ZIPCd>55105</ZIPCd>
        </USAddress>
        <RecipientEIN>416007162</RecipientEIN>
        <IRCSectionDesc>Gov't</IRCSectionDesc>
        <CashGrantAmt>38718</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Assist with the development and testing of the Combined Air Emissions Reporting system.</PurposeOfGrantTxt>
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      <Total501c3OrgCnt>2</Total501c3OrgCnt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ECOS monitors the states to whom it provides grant funds by attending periodic calls with the recipient and the originator of the funding (EPA), reviewing work products, and approving progress reports provided with invoices</ExplanationTxt>
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      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
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      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Patricia Reyes</PersonNm>
        <TitleTxt>ITRC Director (ending 06/23)</TitleTxt>
        <BaseCompensationFilingOrgAmt>192917</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>23150</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>1333</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>217400</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Carolyn Hanson</PersonNm>
        <TitleTxt>Deputy Executive Director</TitleTxt>
        <BaseCompensationFilingOrgAmt>185636</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22770</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7859</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>216265</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 classes of members are: State, Territorial and District of Columbia memberships.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>The classes of members are: State, Territorial and District of Columbia memberships. During meetings of the body-at-large, each dues-paying member may cast only one vote by their official designee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>There are no other committees that can act on behalf of the Executive Committee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Once the 990 is reviewed and approved by the Deputy Executive Director, the Audit Committee will review the 990. After their review, the ECOS officers of the Board (President, Vice President, Secretary-Treasurer, and Past President) are given at least one week to review the form. After their questions and concerns are addressed a copy of the form 990 is provided to the full board of the organization. After that distribution, the 990 is signed and submitted to the IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Annually, the Executive Committee reaffirms the Conflict of Interest Policy. Staff are provided a copy when they join the organization. Annually, Executive Committee members complete a disclosure form. If a perceived or actual conflict arises, it is to be reported to the Executive Committee. The officers of the Executive Committee then determine if a conflict exists. If one does exist, the interested person may not participate in any vote for which the conflict exists. If conflict of interest is disclosed or discovered after an action has been taken, the officers will then determine whether to reject the transaction or take other action. If an officer is the interested person, they are not allowed to be involved in these decisions.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>To determine the compensation for the Executive Director, the officers of the Board (President, VP, Secretary-Treasurer, and Past President) are provided information from salary surveys of nonprofits and compensation information of similar associations from 990's. Annually, they review the Executive Director's performance and set a rate of compensation. The compensation for the Deputy Executive Director is set by the Executive Director with consultation from the officers of the Board.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Council's Bylaws are posted on the Council's website. The Council will provide electronic copies of the Bylaws, Conflict of Interest Policy, and audited financial statements to the public upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
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