﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2018v3.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2019-06-27T11:19:06-05:00</ReturnTs>
    <TaxPeriodEndDt>2018-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>221478099</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>COHNREZNICK LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1301 AVENUE OF THE AMERICAS</AddressLine1Txt>
        <CityNm>NEW YORK</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10019</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990PF</ReturnTypeCd>
    <TaxPeriodBeginDt>2018-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>260466368</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>THORNTON TOMASETTI FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>THOR</BusinessNameControlTxt>
      <PhoneNum>9176618206</PhoneNum>
      <USAddress>
        <AddressLine1Txt>51 MADISON AVENUE</AddressLine1Txt>
        <CityNm>NEW YORK</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10010</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>ANDREW GOLDBAUM</PersonNm>
      <PersonTitleTxt>CHIEF OPERATING OFFICER</PersonTitleTxt>
      <PhoneNum>9176617800</PhoneNum>
      <SignatureDt>2019-06-26</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>LORI ROTHE YOKOBOSKY CPA</PreparerPersonNm>
      <PTIN>P01273422</PTIN>
      <PhoneNum>2122970400</PhoneNum>
      <PreparationDt>2019-06-26</PreparationDt>
    </PreparerPersonGrp>
    <FilingSecurityInformation>
      <IPAddress>
        <IPv4AddressTxt>209.59.242.22</IPv4AddressTxt>
      </IPAddress>
      <IPDt>2019-06-26</IPDt>
      <IPTm>13:04:03</IPTm>
      <IPTimezoneCd>ED</IPTimezoneCd>
      <FilingLicenseTypeCd>P</FilingLicenseTypeCd>
      <AtSubmissionCreationDeviceId>DA39A3EE5E6B4B0D3255BFEF95601890AFD80709</AtSubmissionCreationDeviceId>
      <AtSubmissionFilingDeviceId>238159564A7F207AC3E2D33505B4833284B8AC6F</AtSubmissionFilingDeviceId>
    </FilingSecurityInformation>
    <TaxYr>2018</TaxYr>
    <BuildTS>2019-02-21 02:37:17Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990PF documentId="RetDoc1235000001">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <FMVAssetsEOYAmt>125155</FMVAssetsEOYAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AnalysisOfRevenueAndExpenses>
        <ContriRcvdRevAndExpnssAmt>126000</ContriRcvdRevAndExpnssAmt>
        <CapGainNetIncmNetInvstIncmAmt>0</CapGainNetIncmNetInvstIncmAmt>
        <TotalRevAndExpnssAmt>126000</TotalRevAndExpnssAmt>
        <TotalNetInvstIncmAmt>0</TotalNetInvstIncmAmt>
        <CompOfcrDirTrstRevAndExpnssAmt>0</CompOfcrDirTrstRevAndExpnssAmt>
        <CompOfcrDirTrstNetInvstIncmAmt>0</CompOfcrDirTrstNetInvstIncmAmt>
        <CompOfcrDirTrstDsbrsChrtblAmt>0</CompOfcrDirTrstDsbrsChrtblAmt>
        <AccountingFeesRevAndExpnssAmt referenceDocumentId="RetDoc2002200001">2322</AccountingFeesRevAndExpnssAmt>
        <AccountingFeesNetInvstIncmAmt>1161</AccountingFeesNetInvstIncmAmt>
        <AccountingFeesChrtblPrpsAmt>1161</AccountingFeesChrtblPrpsAmt>
        <OtherExpensesRevAndExpnssAmt referenceDocumentId="RetDoc2003200001">377</OtherExpensesRevAndExpnssAmt>
        <OtherExpensesNetInvstIncmAmt>0</OtherExpensesNetInvstIncmAmt>
        <OtherExpensesDsbrsChrtblAmt>377</OtherExpensesDsbrsChrtblAmt>
        <TotOprExpensesRevAndExpnssAmt>2699</TotOprExpensesRevAndExpnssAmt>
        <TotOprExpensesNetInvstIncmAmt>1161</TotOprExpensesNetInvstIncmAmt>
        <TotOprExpensesDsbrsChrtblAmt>1538</TotOprExpensesDsbrsChrtblAmt>
        <ContriPaidRevAndExpnssAmt>116500</ContriPaidRevAndExpnssAmt>
        <ContriPaidDsbrsChrtblAmt>116500</ContriPaidDsbrsChrtblAmt>
        <TotalExpensesRevAndExpnssAmt>119199</TotalExpensesRevAndExpnssAmt>
        <TotalExpensesNetInvstIncmAmt>1161</TotalExpensesNetInvstIncmAmt>
        <TotalExpensesDsbrsChrtblAmt>118038</TotalExpensesDsbrsChrtblAmt>
        <ExcessRevenueOverExpensesAmt>6801</ExcessRevenueOverExpensesAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
      </AnalysisOfRevenueAndExpenses>
      <Form990PFBalanceSheetsGrp>
        <SavAndTempCashInvstBOYAmt>118354</SavAndTempCashInvstBOYAmt>
        <SavAndTempCashInvstEOYAmt>125155</SavAndTempCashInvstEOYAmt>
        <SavAndTempCashInvstEOYFMVAmt>125155</SavAndTempCashInvstEOYFMVAmt>
        <TotalAssetsBOYAmt>118354</TotalAssetsBOYAmt>
        <TotalAssetsEOYAmt>125155</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>125155</TotalAssetsEOYFMVAmt>
        <TotalLiabilitiesBOYAmt>0</TotalLiabilitiesBOYAmt>
        <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
        <OrgDoesNotFollowSFAS117Ind>X</OrgDoesNotFollowSFAS117Ind>
        <CapitalStockBOYAmt>0</CapitalStockBOYAmt>
        <CapitalStockEOYAmt>0</CapitalStockEOYAmt>
        <AdditionalPaidInCapitalBOYAmt>0</AdditionalPaidInCapitalBOYAmt>
        <AdditionalPaidInCapitalEOYAmt>0</AdditionalPaidInCapitalEOYAmt>
        <RetainedEarningBOYAmt>118354</RetainedEarningBOYAmt>
        <RetainedEarningEOYAmt>125155</RetainedEarningEOYAmt>
        <TotNetAstOrFundBalancesBOYAmt>118354</TotNetAstOrFundBalancesBOYAmt>
        <TotNetAstOrFundBalancesEOYAmt>125155</TotNetAstOrFundBalancesEOYAmt>
        <TotalLiabilitiesNetAstBOYAmt>118354</TotalLiabilitiesNetAstBOYAmt>
        <TotalLiabilitiesNetAstEOYAmt>125155</TotalLiabilitiesNetAstEOYAmt>
      </Form990PFBalanceSheetsGrp>
      <ChgInNetAssetsFundBalancesGrp>
        <TotNetAstOrFundBalancesBOYAmt>118354</TotNetAstOrFundBalancesBOYAmt>
        <ExcessRevenueOverExpensesAmt>6801</ExcessRevenueOverExpensesAmt>
        <OtherIncreasesAmt>0</OtherIncreasesAmt>
        <SubtotalAmt>125155</SubtotalAmt>
        <OtherDecreasesAmt>0</OtherDecreasesAmt>
        <TotNetAstOrFundBalancesEOYAmt>125155</TotNetAstOrFundBalancesEOYAmt>
      </ChgInNetAssetsFundBalancesGrp>
      <QlfyUndSect4940eReducedTaxGrp>
        <LiableSection4942TaxInd>0</LiableSection4942TaxInd>
        <AdjustedQlfyDistriYr1Amt>142549</AdjustedQlfyDistriYr1Amt>
        <NetVlNoncharitableAssetsYr1Amt>133917</NetVlNoncharitableAssetsYr1Amt>
        <DistributionYr1Rt>1.064458</DistributionYr1Rt>
        <AdjustedQlfyDistriYr2Amt>143819</AdjustedQlfyDistriYr2Amt>
        <NetVlNoncharitableAssetsYr2Amt>111787</NetVlNoncharitableAssetsYr2Amt>
        <DistributionYr2Rt>1.286545</DistributionYr2Rt>
        <AdjustedQlfyDistriYr3Amt>68850</AdjustedQlfyDistriYr3Amt>
        <NetVlNoncharitableAssetsYr3Amt>79762</NetVlNoncharitableAssetsYr3Amt>
        <DistributionYr3Rt>0.863193</DistributionYr3Rt>
        <AdjustedQlfyDistriYr4Amt>114300</AdjustedQlfyDistriYr4Amt>
        <NetVlNoncharitableAssetsYr4Amt>27147</NetVlNoncharitableAssetsYr4Amt>
        <DistributionYr4Rt>4.210410</DistributionYr4Rt>
        <AdjustedQlfyDistriYr5Amt>76900</AdjustedQlfyDistriYr5Amt>
        <NetVlNoncharitableAssetsYr5Amt>41054</NetVlNoncharitableAssetsYr5Amt>
        <DistributionYr5Rt>1.873143</DistributionYr5Rt>
        <TotalDistributionRt>9.297749</TotalDistributionRt>
        <AverageDistributionRt>1.859550</AverageDistributionRt>
        <NetVlNoncharitableAssetsAmt>119566</NetVlNoncharitableAssetsAmt>
        <AdjNetVlNoncharitableAssetsAmt>222339</AdjNetVlNoncharitableAssetsAmt>
        <NetInvestmentIncomePctAmt>0</NetInvestmentIncomePctAmt>
        <AdjNonchrtblNetInvstIncmPctAmt>222339</AdjNonchrtblNetInvstIncmPctAmt>
        <QualifyingDistributionsAmt>118038</QualifyingDistributionsAmt>
      </QlfyUndSect4940eReducedTaxGrp>
      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>0</InvestmentIncomeExciseTaxAmt>
        <TaxUnderSection511Amt>0</TaxUnderSection511Amt>
        <SubtotalAmt>0</SubtotalAmt>
        <SubtitleATaxAmt>0</SubtitleATaxAmt>
        <TaxBasedOnInvestmentIncomeAmt>0</TaxBasedOnInvestmentIncomeAmt>
        <EstimatedPlusOvpmtIncmTxAmt>0</EstimatedPlusOvpmtIncmTxAmt>
        <ExtsnRequestIncomeTaxPaidAmt>0</ExtsnRequestIncomeTaxPaidAmt>
        <BackupWithholdingWithheldAmt>0</BackupWithholdingWithheldAmt>
        <TotalPaymentsAndCreditsAmt>0</TotalPaymentsAndCreditsAmt>
        <EsPenaltyAmt>0</EsPenaltyAmt>
        <TaxDueAmt>0</TaxDueAmt>
      </ExciseTaxBasedOnInvstIncmGrp>
      <StatementsRegardingActyGrp>
        <LegislativePoliticalActyInd>0</LegislativePoliticalActyInd>
        <MoreThan100SpentInd>0</MoreThan100SpentInd>
        <Form1120POLFiledInd>0</Form1120POLFiledInd>
        <Section4955OrganizationTaxAmt>0</Section4955OrganizationTaxAmt>
        <Section4955ManagersTaxAmt>0</Section4955ManagersTaxAmt>
        <TaxReimbursedAmt>0</TaxReimbursedAmt>
        <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
        <ChangesToArticlesOrBylawsInd>0</ChangesToArticlesOrBylawsInd>
        <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
        <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
        <Section508eRqrSatisfiedInd>1</Section508eRqrSatisfiedInd>
        <AtLeast5000InAssetsInd>1</AtLeast5000InAssetsInd>
        <OrgReportOrRegisterStateCd>NY</OrgReportOrRegisterStateCd>
        <Form990PFFiledWithAttyGenInd>1</Form990PFFiledWithAttyGenInd>
        <PrivateOperatingFoundationInd>0</PrivateOperatingFoundationInd>
        <NewSubstantialContributorsInd>0</NewSubstantialContributorsInd>
        <OwnControlledEntityInd>0</OwnControlledEntityInd>
        <DonorAdvisedFundInd>0</DonorAdvisedFundInd>
        <ComplyWithPublicInspRqrInd>1</ComplyWithPublicInspRqrInd>
        <WebsiteAddressTxt>WWW THORNTONTOMASETTI COM</WebsiteAddressTxt>
        <IndividualWithBooksNm>ANDREW GOLDBAUM</IndividualWithBooksNm>
        <PhoneNum>9176618206</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10010</ZIPCd>
        </LocationOfBooksUSAddress>
        <ForeignAccountsQuestionInd>0</ForeignAccountsQuestionInd>
      </StatementsRegardingActyGrp>
      <StatementsRegardingActy4720Grp>
        <SaleOrExchDisqualifiedPrsnInd>0</SaleOrExchDisqualifiedPrsnInd>
        <BrrwOrLendDisqualifiedPrsnInd>0</BrrwOrLendDisqualifiedPrsnInd>
        <FurnGoodsDisqualifiedPrsnInd>0</FurnGoodsDisqualifiedPrsnInd>
        <PayCompDisqualifiedPrsnInd>0</PayCompDisqualifiedPrsnInd>
        <TransferAstDisqualifiedPrsnInd>0</TransferAstDisqualifiedPrsnInd>
        <PaymentToGovernmentOfficialInd>0</PaymentToGovernmentOfficialInd>
        <UncorrectedPriorActsInd>0</UncorrectedPriorActsInd>
        <UndistributedIncomePYInd>0</UndistributedIncomePYInd>
        <BusinessHoldingsInd>0</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>0</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>0</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>0</InfluenceLegislationInd>
        <InfluenceElectionInd>0</InfluenceElectionInd>
        <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>0</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>ANDREW GOLDBAUM</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>TREASURER</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>ELIZABETH MALSCH</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>SECRETARY</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>JOEL S WEINSTEIN</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>VICE CHAIRMAN</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>JOSEPH G BURNS</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>DIRECTOR</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>RAY DADDAZIO</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>DIRECTOR</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>RICHARD L TOMASETTI</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>CHAIRMAN</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>WAYNE STOCKS</PersonNm>
          <USAddress>
            <AddressLine1Txt>51 MADISON AVE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </USAddress>
          <TitleTxt>DIRECTOR</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <CompOfHghstPdEmplOrNONETxt>NONE</CompOfHghstPdEmplOrNONETxt>
        <OtherEmployeePaidOver50kCnt>0</OtherEmployeePaidOver50kCnt>
        <CompOfHghstPdCntrctOrNONETxt>NONE</CompOfHghstPdCntrctOrNONETxt>
        <ContractorPaidOver50kCnt>0</ContractorPaidOver50kCnt>
      </OfficerDirTrstKeyEmplInfoGrp>
      <SumOfProgramRelatedInvstGrp>
        <TotalAmt>0</TotalAmt>
      </SumOfProgramRelatedInvstGrp>
      <MinimumInvestmentReturnGrp>
        <AverageMonthlyFMVOfSecAmt>0</AverageMonthlyFMVOfSecAmt>
        <AverageMonthlyCashBalancesAmt>121387</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>0</FMVAllOtherNoncharitableAstAmt>
        <TotalFMVOfUnusedAssetsAmt>121387</TotalFMVOfUnusedAssetsAmt>
        <ReductionClaimedAmt>0</ReductionClaimedAmt>
        <AcquisitionIndebtednessAmt>0</AcquisitionIndebtednessAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>121387</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>1821</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>119566</NetVlNoncharitableAssetsAmt>
        <MinimumInvestmentReturnAmt>5978</MinimumInvestmentReturnAmt>
      </MinimumInvestmentReturnGrp>
      <DistributableAmountGrp>
        <MinimumInvestmentReturnAmt>5978</MinimumInvestmentReturnAmt>
        <TotalTaxAmt>0</TotalTaxAmt>
        <DistributableBeforeAdjAmt>5978</DistributableBeforeAdjAmt>
        <RecoveriesQualfiedDistriAmt>0</RecoveriesQualfiedDistriAmt>
        <DistributableBeforeDedAmt>5978</DistributableBeforeDedAmt>
        <DeductionFromDistributableAmt>0</DeductionFromDistributableAmt>
        <DistributableAsAdjustedAmt>5978</DistributableAsAdjustedAmt>
      </DistributableAmountGrp>
      <QualifyingDistriPartXIIGrp>
        <ExpensesAndContributionsAmt>118038</ExpensesAndContributionsAmt>
        <ProgramRelatedInvstTotalAmt>0</ProgramRelatedInvstTotalAmt>
        <QualifyingDistributionsAmt>118038</QualifyingDistributionsAmt>
        <PctSect4940eOrgNetInvstIncmAmt>0</PctSect4940eOrgNetInvstIncmAmt>
        <AdjustedQualifyingDistriAmt>118038</AdjustedQualifyingDistriAmt>
      </QualifyingDistriPartXIIGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>5978</DistributableAsAdjustedAmt>
        <UndistributedIncomePYAmt>0</UndistributedIncomePYAmt>
        <TotalForPriorYearsAmt>0</TotalForPriorYearsAmt>
        <ExcessDistributionCyovYr5Amt>74847</ExcessDistributionCyovYr5Amt>
        <ExcessDistributionCyovYr4Amt>112943</ExcessDistributionCyovYr4Amt>
        <ExcessDistributionCyovYr3Amt>53612</ExcessDistributionCyovYr3Amt>
        <ExcessDistributionCyovYr2Amt>138230</ExcessDistributionCyovYr2Amt>
        <ExcessDistributionCyovYr1Amt>135853</ExcessDistributionCyovYr1Amt>
        <TotalExcessDistributionCyovAmt>515485</TotalExcessDistributionCyovAmt>
        <QualifyingDistributionsAmt>118038</QualifyingDistributionsAmt>
        <AppliedToYear1Amt>0</AppliedToYear1Amt>
        <AppliedToPriorYearsAmt>0</AppliedToPriorYearsAmt>
        <TreatedAsDistriFromCorpusAmt>0</TreatedAsDistriFromCorpusAmt>
        <AppliedToCurrentYearAmt>5978</AppliedToCurrentYearAmt>
        <RemainingDistriFromCorpusAmt>112060</RemainingDistriFromCorpusAmt>
        <ExcessDistriCyovAppCYCorpusAmt>0</ExcessDistriCyovAppCYCorpusAmt>
        <ExcessDistributionCyovAppCYAmt>0</ExcessDistributionCyovAppCYAmt>
        <TotalCorpusAmt>627545</TotalCorpusAmt>
        <PriorYearUndistributedIncmAmt>0</PriorYearUndistributedIncmAmt>
        <PriorYearDeficiencyOrTaxAmt>0</PriorYearDeficiencyOrTaxAmt>
        <Taxable1Amt>0</Taxable1Amt>
        <Taxable2Amt>0</Taxable2Amt>
        <UndistributedIncomeCYAmt>0</UndistributedIncomeCYAmt>
        <CorpusDistri170b1EOr4942g3Amt>0</CorpusDistri170b1EOr4942g3Amt>
        <ExcessDistriCyovFromYr5Amt>74847</ExcessDistriCyovFromYr5Amt>
        <ExcessDistriCyovToNextYrAmt>552698</ExcessDistriCyovToNextYrAmt>
        <ExcessFromYear4Amt>112943</ExcessFromYear4Amt>
        <ExcessFromYear3Amt>53612</ExcessFromYear3Amt>
        <ExcessFromYear2Amt>138230</ExcessFromYear2Amt>
        <ExcessFromYear1Amt>135853</ExcessFromYear1Amt>
        <ExcessFromCurrentYearAmt>112060</ExcessFromCurrentYearAmt>
      </UndistributedIncomeGrp>
      <SupplementaryInformationGrp>
        <ApplicationSubmissionInfoGrp>
          <RecipientPersonNm>ANDREW GOLDBAUM</RecipientPersonNm>
          <RecipientUSAddress>
            <AddressLine1Txt>51 MADISON AVENUE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10010</ZIPCd>
          </RecipientUSAddress>
          <RecipientPhoneNum>9176117800</RecipientPhoneNum>
          <FormAndInfoAndMaterialsTxt>SCHOLARSHIP APPLICATIONS WILL BE HANDLED DIRECTLY BY THE UNIVERSITIES AFFILIATED WITH THE FOUNDATION, NOT BY THE FOUNDATION ITSELF</FormAndInfoAndMaterialsTxt>
          <SubmissionDeadlinesTxt>NONE</SubmissionDeadlinesTxt>
          <RestrictionsOnAwardsTxt>STUDENTS OF ENGINEERING OR ARCHITECTURE MATRICULATED AT ANY ACCREDITED INSTITUTION OF HIGHER LEARNING, FOR EITHER A PRIMARY OR ADVANCED DEGREE. FULL-TIME EMPLOYEES OF THORNTON TOMASETTI ARE NOT ELIGIBLE.</RestrictionsOnAwardsTxt>
        </ApplicationSubmissionInfoGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>BRIDGES TO PROSPERITY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>5007 C-126 VICTORY BOULEVARD</AddressLine1Txt>
            <CityNm>YORKTOWN</CityNm>
            <StateAbbreviationCd>VA</StateAbbreviationCd>
            <ZIPCd>23693</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>12500</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>BUILD CHANGE</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>1416 LARIMER STREET301</AddressLine1Txt>
            <CityNm>DEVER</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>80202</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>23500</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>COLIMBIA UNIVERSITY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>116TH ST BROADWAY</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10027</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>2500</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>ENGINEERS WITHOUT BORDERS</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>4665 NAUTILUS COURT SUITE 3000</AddressLine1Txt>
            <CityNm>BOULDER</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>80301</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>25000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>HOFSTRA UNIVERSITY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>28 HOFSTRA UNIVERSITY PHILLIPS HA</AddressLine1Txt>
            <CityNm>HEMPSTEAD</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>115490001</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>8000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>LEHIGH UNIVERSITY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>306 S NEW ST STE 451</AddressLine1Txt>
            <CityNm>BETHLEHEM</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>180151652</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>10000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>STANFORD CIVIL &amp; ENVIRONMENTAL ENGINEERING</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>473 VIA ORTEGA ROOM 311</AddressLine1Txt>
            <CityNm>STANFORD</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94305</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>10000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>THE COOPER UNION</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>30 COOPER SQUARE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10003</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>2500</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>THE UNIVERSITY OF TEXAS</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>100 W DEAN KEATON 4 400</AddressLine1Txt>
            <CityNm>AUSTIN</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>78712</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>10000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>THE URBAN ASSEMBLY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>90 BROAD STREET SUITE 2101</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10004</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>10000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>UNIVERSITY OF NOTRE DAME</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>NOTRE DAME</AddressLine1Txt>
            <CityNm>INDIANA</CityNm>
            <StateAbbreviationCd>IN</StateAbbreviationCd>
            <ZIPCd>465560000</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>PC</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>UNRESTRICTED SUPPORT OF ORGANIZATIONS CHARITABLE PURPOSE</GrantOrContributionPurposeTxt>
          <Amt>2500</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>116500</TotalGrantOrContriPdDurYrAmt>
        <TotalGrantOrContriApprvFutAmt>0</TotalGrantOrContriApprvFutAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>0</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>0</ExclusionAmt>
          <RelatedOrExemptFunctionIncmAmt>0</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>0</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>0</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>0</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>0</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>0</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>0</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>0</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>0</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>0</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>0</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>0</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <GeneralRuleInd>X</GeneralRuleInd>
      <ContributorInformationGrp>
        <ContributorNum>1</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1Txt>THORNTON TOMASETTI INC</BusinessNameLine1Txt>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1Txt>51 MADISON AVENUE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10010</ZIPCd>
        </ContributorUSAddress>
        <TotalContributionsAmt>125000</TotalContributionsAmt>
        <PersonContributionInd>X</PersonContributionInd>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <AccountingFeesSchedule documentId="RetDoc2002200001">
      <AccountingFeesDetail>
        <CategoryTxt>ACCOUNTING</CategoryTxt>
        <Amt>2322</Amt>
        <NetInvestmentIncomeAmt>1161</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1161</DisbursementsCharitablePrpsAmt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <OtherExpensesSchedule documentId="RetDoc2003200001">
      <OtherExpensesScheduleGrp>
        <Desc>BANK CHARGES</Desc>
        <RevenueAndExpensesPerBooksAmt>227</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>227</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>FILING FEES</Desc>
        <RevenueAndExpensesPerBooksAmt>150</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>150</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
  </ReturnData>
</Return>