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        <ProgramServicesAmt>1516017</ProgramServicesAmt>
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      <OtherExpensesGrp>
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        <ProgramServicesAmt>864383</ProgramServicesAmt>
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      <OtherExpensesGrp>
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      <OtherExpensesGrp>
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        <ProgramServicesAmt>84970</ProgramServicesAmt>
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        <EOYAmt>0</EOYAmt>
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      <FederalGrantAuditPerformedInd>1</FederalGrantAuditPerformedInd>
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        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNAVCO QUALIFIES AS A TAX-EXEMPT ORGANIZATION UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE AND, THEREFORE, NO PROVISION FOR FEDERAL INCOME TAXES HAS BEEN PROVIDED. UNAVCO'S TAX RETURNS ARE SUBJECT TO REVIEW AND EXAMINATION BY FEDERAL AND STATE AUTHORITIES. UNAVCO IS NOT AWARE OF ANY ACTIVITIES THAT WOULD JEOPARDIZE ITS TAX-EXEMPT STATUS. UNAVCO EVALUATES UNCERTAINTY IN INCOME TAX POSITIONS BASED ON A MORE-LIKELY-THAN-NOT RECOGNITION STANDARD. IF THAT THRESHOLD IS MET, THE TAX POSITION IS THEN MEASURED AT THE LARGEST AMOUNT THAT IS GREATER THAN 50% LIKELY OF BEING REALIZED UPON ULTIMATE SETTLEMENT. AS OF DECEMBER 31, 2022, THERE ARE NO ACCRUALS FOR UNCERTAIN TAX POSITIONS. IF APPLICABLE, UNAVCO RECORDS INTEREST AND PENALTIES AS A COMPONENT OF INCOME TAX EXPENSE. TAX YEARS FROM 2019 THROUGH THE CURRENT YEAR REMAIN OPEN FOR EXAMINATION BY TAX AUTHORITIES.</ExplanationTxt>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
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      <DirectorOfSuccessorInd>1</DirectorOfSuccessorInd>
      <EmployeeOfSuccessorInd>1</EmployeeOfSuccessorInd>
      <OwnerOfSuccessorInd>0</OwnerOfSuccessorInd>
      <ReceiveCompensationInd>0</ReceiveCompensationInd>
      <AssetsDistributedInd>1</AssetsDistributedInd>
      <RequiredToNotifyAGInd>1</RequiredToNotifyAGInd>
      <AttorneyGeneralNotifiedInd>1</AttorneyGeneralNotifiedInd>
      <LiabilitiesPaidInd>1</LiabilitiesPaidInd>
      <BondsOutstandingInd>0</BondsOutstandingInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2E:</FormAndLineReferenceDesc>
        <ExplanationTxt>PERSON(S) INVOLVED: AS A RESULT OF THE MERGER, MOST (THOUGH NOT ALL) OFFICERS, DIRECTORS AND KEY EMPLOYEES ASSUMED SIMILAR POSITIONS WITH THE MERGED ENTITY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE N, PART I, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>UNAVCO, INC., MERGED WITH ANOTHER 501(C)(3) ORGANIZATION, INCORPORATED RESEARCH INSTITUTIONS IN SEISMOLOGY (IRIS), EIN 52-1362650, EFFECTIVE 12:01 A.M. ON JANUARY 1, 2023. IRIS WAS THE SURVIVING CORPORATE ENTITY, AND SUBSEQUENTLY CHANGED ITS NAME TO EARTHSCOPE CONSORTIUM, INC. UNAVCO FILED ARTICLES OF MERGER WITH THE COLORADO SECRETARY OF STATE, WHERE UNAVCO WAS LEGALLY DOMICILED. THE AGREEMENT AND PLAN OF MERGER AS WELL AS THE COLORADO CERTIFICATE OF MERGER ARE ATTACHED TO THIS RETURN.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleN>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS MEMBER INSTITUTIONS. EACH MEMBER INSTITUTION HAS A MEMBER REPRESENTATIVE. MEMBER INSTITUTIONS CAN EITHER BE FULL MEMBERS OR ASSOCIATE MEMBERS. IN ORDER TO QUALIFY FOR FULL MEMBERSHIP AN INSTITUTION MUST BE AN EDUCATIONAL OR NONPROFIT INSTITUTION (OR A DEPARTMENT OR OTHER DIVISION OF SUCH AN INSTITUTION), CHARTERED IN THE UNITED STATES AND ITS TERRITORIES AND HAVE A CONTINUED COMMITMENT TO SCHOLARLY RESEARCH INVOLVING THE APPLICATION OF HIGH PRECISION GEODETIC AND STRAIN TECHNIQUES TO EARTH SCIENCE OR OTHER RELATED FIELDS OF STUDY. INSTITUTIONS THAT ARE ENGAGED IN SCHOLARLY RESEARCH INVOLVING THE APPLICATION OF HIGH PRECISION GEODETIC AND STRAIN TO EARTH SCIENCE OR OTHER RELATED FIELDS OF STUDY THAT OTHERWISE DO NOT QUALITY FOR FULL MEMBERSHIP CAN BECOME ASSOCIATE MEMBERS. IN ORDER TO BECOME A MEMBER, INSTITUTIONS MUST APPLY FOR MEMBERSHIP WITH THE BOARD OF DIRECTORS. EACH MEMBER INSTITUTION HAS A MEMBER REPRESENTATIVE. SEE THE RESPONSE TO LINE 7A.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS TWO CLASSES OF MEMBERSHIP: FULL MEMBERSHIP AND ASSOCIATE MEMBERSHIP. FULL MEMBERS HAVE VOTING RIGHTS, WHEREAS ASSOCIATE MEMBERS DO NOT HAVE VOTING RIGHTS. MEMBER REPRESENTATIVES OF FULL INSTITUTIONAL MEMBERS ELECT THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>CHANGES TO THE ORGANIZATION'S BYLAWS ARE SUBJECT TO APPROVAL BY THE MEMBER REPRESENTATIVES OF FULL INSTITUTIONAL MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 8B</FormAndLineReferenceDesc>
        <ExplanationTxt>NO COMMITTEES HAVE THE AUTHORITY TO ACT ON BEHALF OF THE GOVERNING BODY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>MANAGEMENT PROVIDES DATA TO THE PUBLIC ACCOUNTING FIRM TO PREPARE THE FORM 990. THE DRAFT FORM 990 IS REVIEWED BY MANAGEMENT AND THE PRESIDENT PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST FORMS ARE SENT TO EMPLOYEES ANNUALLY BY HUMAN RESOURCES. THE HUMAN RESOURCES DEPARTMENT REVIEWS THE RETURNED FORMS. FORMS INDICATING CONFLICTS ARE GIVEN TO THE PRESIDENT FOR REVIEW. APPROVED POTENTIAL CONFLICTS ARE SIGNED OFF BY THE PRESIDENT. BOARD MEMBERS SIGN CONFLICT OF INTEREST FORMS UPON ELECTION AND ARE REQUIRED TO DISCLOSE ANY CHANGES DURING THEIR TERMS. BOARD MEMBERS ARE REQUIRED TO NOT PARTICIPATE IN ANY INSTITUTIONAL DECISION FOR WHICH AN INDIVIDUAL HAS A REAL OR APPARENT CONFLICT OF INTEREST. THESE RECUSALS ARE DOCUMENTED IN THE BOARD MEETING MINUTES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION OF THE PRESIDENT IS APPROVED BY THE BOARD AND THE PRIMARY SPONSOR, THE NATIONAL SCIENCE FOUNDATION. COMPARABLE COMPENSATION DATA ARE USED BY THE BOARD AND DELIBERATIONS ARE DOCUMENTED IN THE MINUTES. THIS PROCESS LAST OCCURRED IN 2021. SALARY INCREASES FOR KEY EMPLOYEESARE APPROVED BY THE PRESIDENT. COMPARABLE COMPENSATION DATA FROM APPLICABLE RECENT COMPENSATION SURVEYS ARE USED IN DETERMINING SALARY INCREASES FOR KEY EMPLOYEES, IN THE SAME PROCESS APPLIED TO ALL EMPLOYEES. THIS PROCESS LAST OCCURRED IN 2021.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE AVAILABLE FROM THE WEBSITE OF THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNRECOVERED GRANTS RECEIVABLE FROM PRIOR YEARS -242,796. NET ASSETS TRANSFERRED IN MERGER -1,827,022.</ExplanationTxt>
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</Return>
