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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc7">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>786047</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1093439</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1582318</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1764526</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2363725</CurrentTaxYearAmt>
        <TotalAmt>7590055</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>786047</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1093439</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1582318</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1764526</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2363725</CurrentTaxYearAmt>
        <TotalAmt>7590055</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>7590055</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus3YearsAmt>244</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>414</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>20530</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1610</CurrentTaxYearAmt>
        <TotalAmt>22798</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus2YearsAmt>601777</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>528907</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>511238</CurrentTaxYearAmt>
        <TotalAmt>1641922</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>9254775</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>2921546</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.82010</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.83930</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART II, LINE 10</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER INCOME 1,130,684</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc4">
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>238663</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>192199</DepreciationAmt>
        <BookValueAmt>46464</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>158654</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>61848</DepreciationAmt>
        <BookValueAmt>96806</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>143270</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>PAYROLL LIABILITIES</Desc>
        <Amt>23715</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>CREDIT CARDS</Desc>
        <Amt>4883</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>GIFT CARDS</Desc>
        <Amt>2403</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>SALES TAX PAYABLE</Desc>
        <Amt>884</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>31885</TotalLiabilityAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc5">
      <FundraisingEventInformationGrp>
        <Event1Nm>BIKE RIDES AND</Event1Nm>
        <GrossReceiptsEvent1Amt>442557</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>442557</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>257646</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>442557</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>442557</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>257646</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>257646</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>184911</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc6">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>TO MAINTAIN AND ENHANCE TRAILS ACROSS USFS LANDS. WORK INCLUDES RESTORING AND REHABILITATING HISTORIC TRAILS AS WELL AS CREATION OF NEW TRAILS. TRAIL WORK REDUCES EROSION AND MINIMIZES HUMAN IMPACT IN THE FORESTS FOSTERING HISTORIC PRESERVATION AND CONTINUED ENVIRONMENTAL PRESERVATION WHILE PROVIDING THE PUBLIC WITH ACCESS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 1, PART I, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>VOLUNTEERS SUPPORT THE MISSION OF SIERRA BUTTES TRAIL STEARDSHIP BY ASSISTING IN EVENTS SUCH AS "TRAIL DAYS" WHERE THE VOLUNTEERS ARE USED IN TRAIL MAINTENANCE AND UPGRADING. VOLUNTEERS ARE ALSO A PART OF BIKING EVENTS AS HELP WITH FOOD, MEDICAL, AND TRAIL CREWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>IMPROVED, MAINTAINED AND REHABILITATED TRAILS OF VARIOUS SHARED USE IN THE NORTHERN SIERRA NEVADA MOUNTAINS.MAKING TRAILS ACCESSABLE THROUGH RIDE TOURS AND SHUTTLES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>990 REVIEWED BY BOARD OF DIRECTORS AND KEY EMPLOYEES UPON COMPLETION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICTS OF INTEREST MUST BBE REPORTED TO A DIRECTOR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION DETERMINED DURING NORMAL COURSE OF BUSINESS THROUGH BOARD OF DIRECTOR MEETINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>KEY EMPOLYEE SALARY DETERMINED BY BOARD ACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NO DOCUMENTS AVAILABLE TO THE PUBLIC</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>FIELD SUPPLIES 99,095 0 0 AUTO MILEAGE 34,540 8,635 0 VEHICLE MAINTENANCE 19,075 0 0 BIKES FOR SALE 1,778 0 0 BIKES FOR RENT 45 0 0 LICENSES &amp; PERMITS 30,507 0 0 TRAIL CONTRACTORS 296,498 0 0 MERCHANT SERVICE FEES 16,632 0 0 TOTAL 498,170 8,635 0</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
