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      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>332196</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>64760</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>3</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
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            <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 11130</AddressLine1Txt>
            <CityNm>PUEBLO</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>81001</ZIPCd>
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        <ServicesDesc>PTC COURSEWARE DEVELOPMENT SERVICE</ServicesDesc>
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      <CntrctRcvdGreaterThan100KCnt>1</CntrctRcvdGreaterThan100KCnt>
      <GovernmentGrantsAmt>1253100</GovernmentGrantsAmt>
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      <TotalContributionsAmt>1253430</TotalContributionsAmt>
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        <Desc>CONTRACT INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1406408</TotalRevenueColumnAmt>
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      <ProgramServiceRevenueGrp>
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        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1814</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1814</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>1408222</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1804</TotalRevenueColumnAmt>
        <ExclusionAmt>1804</ExclusionAmt>
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      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>2663456</TotalRevenueColumnAmt>
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        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1804</ExclusionAmt>
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      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <CompCurrentOfcrDirectorsGrp>
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        <ProgramServicesAmt>128794</ProgramServicesAmt>
        <ManagementAndGeneralAmt>135929</ManagementAndGeneralAmt>
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      <OtherSalariesAndWagesGrp>
        <TotalAmt>603536</TotalAmt>
        <ProgramServicesAmt>543438</ProgramServicesAmt>
        <ManagementAndGeneralAmt>60098</ManagementAndGeneralAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>33927</TotalAmt>
        <ProgramServicesAmt>30698</ProgramServicesAmt>
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      </PensionPlanContributionsGrp>
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        <TotalAmt>112076</TotalAmt>
        <ProgramServicesAmt>87635</ProgramServicesAmt>
        <ManagementAndGeneralAmt>24441</ManagementAndGeneralAmt>
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      <PayrollTaxesGrp>
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        <ProgramServicesAmt>48855</ProgramServicesAmt>
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      <FeesForServicesAccountingGrp>
        <TotalAmt>32286</TotalAmt>
        <ManagementAndGeneralAmt>32286</ManagementAndGeneralAmt>
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      <FeesForServicesOtherGrp>
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        <ProgramServicesAmt>635203</ProgramServicesAmt>
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        <ProgramServicesAmt>26610</ProgramServicesAmt>
        <ManagementAndGeneralAmt>27989</ManagementAndGeneralAmt>
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      <InformationTechnologyGrp>
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        <ProgramServicesAmt>7694</ProgramServicesAmt>
        <ManagementAndGeneralAmt>19219</ManagementAndGeneralAmt>
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      <OccupancyGrp>
        <TotalAmt>105420</TotalAmt>
        <ManagementAndGeneralAmt>105420</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>131586</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1616</ManagementAndGeneralAmt>
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      <ConferencesMeetingsGrp>
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        <ProgramServicesAmt>255978</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>3557</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>3434</ManagementAndGeneralAmt>
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      <OtherExpensesGrp>
        <Desc>DUES AND SUBSCRIPTIONS</Desc>
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        <ManagementAndGeneralAmt>4013</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1897869</ProgramServicesAmt>
        <ManagementAndGeneralAmt>445518</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>137650</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>36019</EOYAmt>
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        <EOYAmt>12206</EOYAmt>
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        <EOYAmt>7932</EOYAmt>
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      <TotalAssetsGrp>
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        <EOYAmt>1238353</EOYAmt>
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        <EOYAmt>163095</EOYAmt>
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        <EOYAmt>318438</EOYAmt>
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        <EOYAmt>16262</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>309408</BOYAmt>
        <EOYAmt>497795</EOYAmt>
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      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
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        <BOYAmt>420489</BOYAmt>
        <EOYAmt>740558</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>420489</BOYAmt>
        <EOYAmt>740558</EOYAmt>
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        <EOYAmt>1238353</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>320069</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>1</FederalGrantAuditRequiredInd>
      <FederalGrantAuditPerformedInd>1</FederalGrantAuditPerformedInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>1062861</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>878627</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>715935</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1226049</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1253430</CurrentTaxYearAmt>
        <TotalAmt>5136902</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
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        <CurrentTaxYearMinus3YearsAmt>878627</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>715935</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1226049</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1253430</CurrentTaxYearAmt>
        <TotalAmt>5136902</TotalAmt>
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      <PublicSupportTotal170Amt>5136902</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>360</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>583</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>819</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>863</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1804</CurrentTaxYearAmt>
        <TotalAmt>4429</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>3565</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>762</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>970</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>99</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>5396</TotalAmt>
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      <TotalSupportAmt>5146727</TotalSupportAmt>
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      <PublicSupportCY170Pct>0.99810</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.99860</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME:</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER - 2013 AMOUNT: $ 3,565. 2014 AMOUNT: $ 762. 2015 AMOUNT: $ 970. 2016 AMOUNT: $ 99. 2017 AMOUNT: $ 0.</ExplanationTxt>
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    </IRS990ScheduleA>
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      <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>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>7312</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>7312</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>35269</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>23063</DepreciationAmt>
        <BookValueAmt>12206</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>15057</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>15057</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>12206</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED RENT</Desc>
        <Amt>16262</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>16262</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>2824990</TotalRevEtcAuditedFinclStmtAmt>
      <DonatedServicesAndUseFcltsAmt>161534</DonatedServicesAndUseFcltsAmt>
      <RevenueNotReportedAmt>161534</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>2663456</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>2663456</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>2504921</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>161534</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>161534</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>2343387</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>2343387</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CENTER EVALUATED ITS UNCERTAINTY IN INCOME TAXES FOR THE YEARS ENDED DECEMBER 31, 2017 AND 2016, AND DETERMINED THAT THERE WERE NO MATTERS THAT WOULD REQUIRE RECOGNITION IN THE FINANCIAL STATEMENTS OR THAT MAY HAVE ANY EFFECT ON ITS TAX-EXEMPT STATUS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN K CLARK</PersonNm>
        <TitleTxt>SECRETARY AND EXECUTIVE DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>119899</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6929</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>25223</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>152051</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CENTER INTRODUCED THE BOMBARDIER AS A NEW PROGRAM SERVICE DURING THE YEAR ENDED DECEMBER 31, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DRAFT FEDERAL FORM 990 IS REVIEWED BY THE DIRECTOR OF FINANCE AND COMPARED TO THE AUDITED FINANCIAL STATEMENTS FOR THE YEAR. BEFORE ISSUANCE OF THE FINAL DRAFT FEDERAL FORM 990, THE DIRECTOR OF FINANCE REVIEWS THE FORM WITH THE SECRETARY AND EXECUTIVE DIRECTOR, JOHN K. CLARK, FOR APPROVAL. IF FEASIBLE, THE FEDERAL FORM 990 IS MADE AVAILABLE TO THE EXECUTIVE COMMITTEE AT THE TIME OF THE AUDITED FINANCIAL STATEMENT REVIEW. IT IS ALSO E-MAILED TO THE ENTIRE GOVERNING BODY PRIOR TO BEING FILED WITH THE INTERNAL REVENUE SERVICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CENTER'S POLICIES AND PROCEDURES HANDBOOK CLEARLY STATES ITS POLICY ON A CONFLICT OF INTEREST OF EMPLOYEES AND BOARD MEMBERS. EACH NEW STAFF AND BOARD MEMBER IS REQUIRED TO REVIEW A COPY OF THIS POLICY AND TO ACKNOWLEDGE IN WRITING THAT HE OR SHE HAS DONE SO. EACH STAFF AND BOARD MEMBER ANNUALLY COMPLETES A DISCLOSURE CONFIRMING THAT HE OR SHE DOES NOT HAVE A CONFLICT OF INTEREST OR IDENTIFYING ANY RELATIONSHIPS, POSITIONS OR CIRCUMSTANCES IN WHICH HE OR SHE IS INVOLVED THAT HE OR SHE BELIEVES COULD CONTRIBUTE TO A CONFLICT OF INTEREST ARISING. THE CONFLICT OF INTEREST POLICY IS REVIEWED ANNUALLY BY EACH MEMBER OF THE BOARD OF DIRECTORS. ANY CHANGES TO THE POLICY ARE COMMUNICATED IMMEDIATELY TO ALL STAFF AND BOARD MEMBERS. IF A STAFF OR BOARD MEMBER HAS AN INTEREST IN A PROPOSED TRANSACTION WITH THE CENTER IN THE FORM OF A SIGNIFICANT PERSONAL FINANCIAL INTEREST IN THE TRANSACTION OR IN ANY ORGANIZATION INVOLVED IN THE TRANSACTION, OR HOLDS A POSITION AS TRUSTEE, DIRECTOR, OR OFFICER IN ANY SUCH ORGANIZATION, HE OR SHE MUST MAKE FULL DISCLOSURE OF SUCH INTEREST BEFORE ANY DISCUSSION OR NEGOTIATION OF SUCH TRANSACTION. ANY BOARD OR COMMITTEE MEMBER WHO IS AWARE OF A POTENTIAL CONFLICT OF INTEREST WITH RESPECT TO ANY MATTER COMING BEFORE THE BOARD OR COMMITTEE SHALL NOT BE PRESENT FOR ANY DISCUSSION OF OR VOTE IN CONNECTION WITH THE MATTER. ADDITIONALLY, THE CENTER'S PROJECTS ARE ACTIVELY DISCUSSED AND REVIEWED AT ADDITIONAL BOARD MEETINGS AND IN COMMUNICATIONS THROUGHOUT THE YEAR. BOARD MEMBERS ARE AWARE THAT THEY SHOULD REVEAL ANY CONFLICTS IN THE EVENT THAT A NEW PROJECT WOULD PRESENT SUCH A SITUATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>TO DETERMINE SALARY RANGES FOR A CLUSTER OF SIMILAR POSITIONS, THE CENTER USES COMPENSATION SURVEYS FROM SOURCES SUCH AS THE MARYLAND NONPROFITS SALARY SURVEY, GREATER WASHINGTON AREA ASSOCIATION COMPENSATION AND BENEFITS STUDY, NONPROFIT TIMES SALARY SURVEY, AND THE OFFICE OF PERSONNEL MANAGEMENT SALARY TABLE. INDIVIDUAL SALARIES OF OFFICERS AND KEY EMPLOYEES ARE THEN DETERMINED BY THE CENTER'S MANAGEMENT TEAM BASED ON THE PERSON'S QUALIFICATIONS AND EXPERIENCE. A 3% COST OF LIVING ADJUSTMENT WAS PROVIDED TO ALL FULL-TIME STAFF EFFECTIVE JANAURY 1, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CENTER MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>SUBCONTRACTORS: PROGRAM SERVICE EXPENSES 635,203. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 635,203. PAYROLL SERVICES: PROGRAM SERVICE EXPENSES 0. MANAGEMENT AND GENERAL EXPENSES 615. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 615.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>