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      <RevenueNotReportedFinclStmtAmt>109292</RevenueNotReportedFinclStmtAmt>
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      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE D, PART II, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM ACCOUNTED FOR THE PROCEEDS AS REVENUE IN THE YEAR THE EASEMENT WAS RECEIVED.</ExplanationTxt>
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      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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    <IRS990ScheduleL documentId="RetDoc1042800001">
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        <PersonNm>TIMOTHY BOLAND</PersonNm>
        <RelationshipWithOrgTxt>EXECUTIVE DIRECTOR</RelationshipWithOrgTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>THE ARBORETUM HAS NOT FILED THE FORM 990T AS OF THE FILING OF THIS FORM 990, BUT WILL DO SO PRIOR TO THE DUE DATE OF THE FORM 990T. THE ARBORETUM MAY NOT RECEIVE THE K-1 WHICH WILL INCLUDE THE UBTI INFORMAITON UNTIL AFTER THE EXTENDED DUE DATE OF THE FORM 990. WHEN THAT OCCURS THE ARBORETUM WILL ESTIMATE THE INCOME ON THE FORM 990. IT WILL USE THE ACTUAL K-1, WHEN RECEIVED, TO PREPARE THE FORM 990T AND PAY ALL APPROPRIATE INCOME TAXES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 990 IS REVIEWED AND APPROVED BY MANAGEMENT, REVIEWED AND APPROVED BY THE FINANCE COMITTEE AND THEN REVIEWED BY THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM REQUIRES ALL BOARD MEMBERS TO FILL OUT FORMS, ANNUALLY, DISCLOSING ANY CONFLICTS OF INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE, MADE UP OF MEMBERS OF THE BOARD, DETERMINES KEY EMPLOYEES SALARIES BY AN INDUSTRY SALARY REVIEW FROM GUIDESTAR AND REVIEW OF FORMS 990 OF OTHER ORGANIZATIONS. THE COMITTEE MEETS AND REVIEWS THE EXECUTIVE DIRECTOR'S PERFORMANCE AND DETERMINES APPROPRIATE SALARY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM WILL MAKE GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST OF ANY INTERESTED PARTY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>