<?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="2021v4.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2023-08-05T02:45:20-00:00</ReturnTs>
    <TaxPeriodEndDt>2022-09-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>231778239</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>Bookkeeping Solutions</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>8189 Del Haven Rd</AddressLine1Txt>
        <CityNm>Dundalk</CityNm>
        <StateAbbreviationCd>MD</StateAbbreviationCd>
        <ZIPCd>21122</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2021-10-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>522138076</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>LOW IMPACT DEVELOPMENT CENTER INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>LOWI</BusinessNameControlTxt>
      <PhoneNum>3019825559</PhoneNum>
      <USAddress>
        <AddressLine1Txt>5000 SUNNYSIDE AVE STE 100</AddressLine1Txt>
        <CityNm>BELTSVILLE</CityNm>
        <StateAbbreviationCd>MD</StateAbbreviationCd>
        <ZIPCd>20705</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>NEIL WEINSTEIN</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIRECTOR</PersonTitleTxt>
      <PhoneNum>3019825559</PhoneNum>
      <SignatureDt>2023-08-05</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>NEIL</PersonFirstNm>
        <PersonLastNm>WEINSTEIN</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Virginie Bolton</PreparerPersonNm>
      <PTIN>P00996990</PTIN>
      <PhoneNum>4102274392</PhoneNum>
      <PreparationDt>2023-08-05</PreparationDt>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>2</TrustedCustomerCd>
        <AuthenticationAssuranceLevelCd>AAL1</AuthenticationAssuranceLevelCd>
        <IdentityAssuranceLevelCd>IAL1</IdentityAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2021</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990 documentId="990" softwareId="21013554" softwareVersionNum="21.0.5.0">
      <PrincipalOfficerNm>NEIL WEINSTEIN</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>5000 SUNNYSIDE AVE STE 100</AddressLine1Txt>
        <CityNm>BELTSVILLE</CityNm>
        <StateAbbreviationCd>MD</StateAbbreviationCd>
        <ZIPCd>20705</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>1294917</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.LIDCENTER.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1998</FormationYr>
      <LegalDomicileStateCd>MD</LegalDomicileStateCd>
      <ActivityOrMissionDesc>RESEARCH ORGANIZATION FOCUSING ON SUSTAINABLE STORMWATER MANAGEMENT FOR URBAN AND DEVELOPING AREAS.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>5</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>5</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>11</TotalEmployeeCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <PYContributionsGrantsAmt>314304</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>29742</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>1016760</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>1265175</CYProgramServiceRevenueAmt>
      <CYInvestmentIncomeAmt>0</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>650</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>1331714</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>1294917</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>1026625</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>1103761</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>245026</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>212342</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>1271651</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>1316103</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>60063</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-21186</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>671271</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>575744</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>152947</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>78606</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>518324</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>497138</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>THE LOW IMPACT DEVELOPMENT CENTER, INC LID CENTER IS A NON-PROFIT 501C3 NATIONAL RESEARCH ORGANIZATION FOCUSING ON SUSTAINABLE STORMWATER MANAGEMENT SOLUTIONS FOR URBAN AND DEVELOPING AREAS. A KEY PROGRAM OF THE LID CENTER IS FOCUSED ON THE INTEGRATION OF LOW IMPACT DEVELOPMENT AND SUSTAINABLE GREEN TECHNOLOGIES INTO TRANSPORTATION PROJECTS.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>185471</ExpenseAmt>
      <RevenueAmt>308315</RevenueAmt>
      <Desc>THE LID CENTER IS UNDER A MULTI-YEAR CONTRACT TO ASSIST PRINCE GEORGES COUNTY, MD WITH STORMWATER MANAGEMENT GOALS. THIS INCLUDES PARTNERING AND HIRING OTHER NGOS, CONTRACTORS AND CONSULTANTS BASED IN PG COUNTY TO PARTICIPATE IN PROJECTS AND GAIN CAPACITY ON LID APPROACHES. THE FIVE PROJECT AREAS ARE 1 MUNICIPAL NPDES PHASE II SUPPORT AND REPORTING 2 MUNICIPAL AND COUNTY NPDES PROPERTY MANAGEMENT AND MAINTENANCE, SWWP SUPPORT 3 GREEN CONTRACTOR TRAINING AND PUBLIC PARTICIPATION AND EDUCATION 4 TECHNICAL PLANNING, DESIGN PROJECT MANAGEMENT AND OUTREACH SUPPORT AND 5 GRANT MANAGEMENT SERVICES.</Desc>
      <ProgSrvcAccomActy2Grp>
        <ExpenseAmt>91398</ExpenseAmt>
        <RevenueAmt>126823</RevenueAmt>
        <Desc>THROUGH THIS CONTRACT, THE LID CENTER IS DEVELOPING PROGRAMMATIC APPROACHES AND SUPPORTING RESEARCH FOR THE FIRST STORMWATER PUBLIC AND PRIVATE PARTNERSHIP IN THE NATION. THE OBJECTIVE OF THE PROGRAM IS TO DEVELOP A NATIONAL MODEL ON THE APPROACH. THE WORK INCLUDES ECONOMIC ASSESSMENTS AND RESEARCH, DEVELOPMENT OF JOBS PROGRAMS, AND INNOVATIVE APPROACHES FOR PLANNING AND DESIGN FOR THE IMPLEMENTATION OF STORMWATER COMPLIANCE CONTROLS.</Desc>
      </ProgSrvcAccomActy2Grp>
      <ProgSrvcAccomActy3Grp>
        <ExpenseAmt>51158</ExpenseAmt>
        <RevenueAmt>110850</RevenueAmt>
        <Desc>THE LID CENTER HAS PARTICIPATED IN PGS COUNTYS TREATING AND TEACHING PROGRAM SINCE 2016. THIS PROGRAM IS A COLLABORATIVE EFFORT BETWEEN THE ANACOSTIA WATERSHED SOCIETY, PG COUNTY, THE CHESAPEAKE BAY TRUST, THE NEIGHBORHOOD DESIGN CENTER, AND OTHER LOCAL NONPROFITS. EACH YEAR, THE LID CENTER HAS HAD THE OPPORTUNITY TO DESIGN OUTDOOR LEARNING FEATURES FOR TWO SCHOOLS. THE LID CENTER IS CURRENTLY ENGAGED IN A COLLABORATIVE DESIGN PROCESS WITH STUDENTS AND TEACHERS FROM DWIGHT D. EISENHOWER MIDDLE SCHOOL, ROBERT GODDARD MONTESSORI SCHOOL, FRIENDLY HIGH SCHOOL, AND CONCORD ELEMENTARY SCHOOL.</Desc>
      </ProgSrvcAccomActy3Grp>
      <TotalOtherProgSrvcExpenseAmt>401301</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcRevenueAmt>704223</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>729328</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="990A">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
      <ConservationEasementsInd>false</ConservationEasementsInd>
      <CollectionsOfArtInd>false</CollectionsOfArtInd>
      <CreditCounselingInd>false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="990D">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd>false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd>false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd>false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="990D">true</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd>false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="990J">true</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>4</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>11</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <Form8886TFiledInd>false</Form8886TFiledInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <NondeductibleContriDisclInd>false</NondeductibleContriDisclInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <LicensedMoreThanOneStateInd>false</LicensedMoreThanOneStateInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <Form720FiledInd>false</Form720FiledInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <ExcsTaxSect4951Or4952Or4953Ind>false</ExcsTaxSect4951Or4952Or4953Ind>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>5</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>5</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>true</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>true</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>true</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>true</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>MD</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>NEIL WEINSTEIN</PersonNm>
        <PhoneNum>3013273188</PhoneNum>
        <USAddress>
          <AddressLine1Txt>5000 SUNNYSIDE AVENUE STE 100</AddressLine1Txt>
          <CityNm>BELTSVILLE</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>20705</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>NEIL WEINSTEIN</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>040.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>208200</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>EMILY CLIFTON</PersonNm>
        <TitleTxt>ASSOCIATE EXECUTIVE DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>040.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>167170</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID MILLER</PersonNm>
        <TitleTxt>SENIOR ENGINEER</TitleTxt>
        <AverageHoursPerWeekRt>040.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>148448</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>STEVE ROY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>001.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID SMITH</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>001.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN POMPONIO</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>001.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL BURKE</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>001.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>523818</TotalReportableCompFromOrgAmt>
      <IndivRcvdGreaterThan100KCnt>3</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <GovernmentGrantsAmt>29742</GovernmentGrantsAmt>
      <TotalContributionsAmt>29742</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>CONTRACTS RELATED TO EXEMPT PURPOSES</Desc>
        <BusinessCd>541300</BusinessCd>
        <TotalRevenueColumnAmt>1265175</TotalRevenueColumnAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>1265175</TotalProgramServiceRevenueAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>1294917</TotalRevenueColumnAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>0</TotalAmt>
      </ForeignGrantsGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>0</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>375370</TotalAmt>
        <ProgramServicesAmt>248949</ProgramServicesAmt>
        <ManagementAndGeneralAmt>126421</ManagementAndGeneralAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>0</TotalAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>528795</TotalAmt>
        <ProgramServicesAmt>406466</ProgramServicesAmt>
        <ManagementAndGeneralAmt>122329</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>30418</TotalAmt>
        <ManagementAndGeneralAmt>30418</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>107760</TotalAmt>
        <ManagementAndGeneralAmt>107760</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>61418</TotalAmt>
        <ManagementAndGeneralAmt>61418</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>3700</TotalAmt>
        <ManagementAndGeneralAmt>3700</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>14530</TotalAmt>
        <ManagementAndGeneralAmt>14530</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising></FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>4944</TotalAmt>
        <ManagementAndGeneralAmt>4944</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>1000</TotalAmt>
        <ManagementAndGeneralAmt>1000</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>16555</TotalAmt>
        <ManagementAndGeneralAmt>16555</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>27440</TotalAmt>
        <ManagementAndGeneralAmt>27440</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>21984</TotalAmt>
        <ManagementAndGeneralAmt>21984</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>3347</TotalAmt>
        <ProgramServicesAmt>2206</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1141</ManagementAndGeneralAmt>
      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
        <TotalAmt>0</TotalAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>5504</TotalAmt>
        <ManagementAndGeneralAmt>5504</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>0</TotalAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>7832</TotalAmt>
        <ManagementAndGeneralAmt>7832</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>17034</TotalAmt>
        <ManagementAndGeneralAmt>17034</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>MATERIAL AND SUPPLIES</Desc>
        <TotalAmt>12015</TotalAmt>
        <ProgramServicesAmt>12015</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>SUBCONTRACTORS</Desc>
        <TotalAmt>59692</TotalAmt>
        <ProgramServicesAmt>59692</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MEMBERSHIP LICENSES</Desc>
        <TotalAmt>4075</TotalAmt>
        <ManagementAndGeneralAmt>4075</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PROPOSAL EXPENSES</Desc>
        <TotalAmt>378</TotalAmt>
        <ManagementAndGeneralAmt>378</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>12312</TotalAmt>
        <ManagementAndGeneralAmt>12312</ManagementAndGeneralAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>1316103</TotalAmt>
        <ProgramServicesAmt>729328</ProgramServicesAmt>
        <ManagementAndGeneralAmt>586775</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>328300</BOYAmt>
        <EOYAmt>249488</EOYAmt>
      </CashNonInterestBearingGrp>
      <AccountsReceivableGrp>
        <BOYAmt>314829</BOYAmt>
        <EOYAmt>297755</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>3177</BOYAmt>
        <EOYAmt>3177</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>69818</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>44494</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>24965</BOYAmt>
        <EOYAmt>25324</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <TotalAssetsGrp>
        <BOYAmt>671271</BOYAmt>
        <EOYAmt>575744</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>52912</BOYAmt>
        <EOYAmt>78606</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>100035</BOYAmt>
      </DeferredRevenueGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>152947</BOYAmt>
        <EOYAmt>78606</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>518324</BOYAmt>
        <EOYAmt>497138</EOYAmt>
      </RtnEarnEndowmentIncmOthFndsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>518324</BOYAmt>
        <EOYAmt>497138</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>671271</BOYAmt>
        <EOYAmt>575744</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-21186</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="990A" softwareId="21013554" softwareVersionNum="21.0.5.0">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <PublicSupportTotal170Amt>0</PublicSupportTotal170Amt>
      <PublicSupportCY170Pct>0.00000</PublicSupportCY170Pct>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus1YearAmt>314304</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>29742</CurrentTaxYearAmt>
        <TotalAmt>344046</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>1273208</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1369743</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1643780</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1017410</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1265175</CurrentTaxYearAmt>
        <TotalAmt>6569316</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>1273208</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1369743</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1643780</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1331714</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1294917</CurrentTaxYearAmt>
        <TotalAmt>6913362</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>6913362</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <TotalAmt>0</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <TotalAmt>0</TotalAmt>
      </Post1975UBTIGrp>
      <NetIncomeFromOtherUBIGrp>
        <TotalAmt>0</TotalAmt>
      </NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp>
        <TotalAmt>0</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>1273208</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1369743</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1643780</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1331714</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1294917</CurrentTaxYearAmt>
        <TotalAmt>6913362</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>1.00000</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>1.00000</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="990D" softwareId="21013554" softwareVersionNum="21.0.5.0">
      <InclEscrowCustodialAcctLiabInd>false</InclEscrowCustodialAcctLiabInd>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>78009</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>52685</DepreciationAmt>
        <BookValueAmt>25324</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>25324</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>Financial derivatives and other financial products</Desc>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>Closely-held equity interests</Desc>
      </OtherSecuritiesGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Federal income taxes</Desc>
      </OtherLiabilitiesOrgGrp>
      <TotalRevEtcAuditedFinclStmtAmt>1294917</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>1294917</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>1294917</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1316103</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>1316103</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>1316103</TotalExpensesPerForm990Amt>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="990J" softwareId="21013554" softwareVersionNum="21.0.5.0">
      <SubstantiationRequiredInd>true</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NEIL WEINSTEIN</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>200520</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>7680</BonusFilingOrganizationAmount>
        <TotalCompensationFilingOrgAmt>208200</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>EMILY CLIFTON</PersonNm>
        <TitleTxt>ASSOCIATE EXECUTIVE DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>160290</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>6880</BonusFilingOrganizationAmount>
        <TotalCompensationFilingOrgAmt>167170</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="990O" softwareId="21013554" softwareVersionNum="21.0.5.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 401,301, Grants and allocations 0, Revenue 704,223 OTHER PROGRAM SERVICES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROGRAM SERVICES WERE SIMILAR IN NATURE TO THE LARGEST THREE. THIS INCLUDES SUPPORTING MUNICIPALITIES IN POLICY AND PLANNED EFFORTS, PROVIDING DESIGN AND IMPLEMENTATION GUIDANCE AND DEVELOPING GUIDANCE AND RESOURCE DOCUMENTS AS WELL AS EDUCATIONAL SIGNAGE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section 9, Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>STEVEN ROY 1000 INTERNATIONAL DR. SUITE 152 PORTSMOUTH, NH 03801 DAVID SMITH 14801 MURDOCK ST SUITE 230 CHANTILLY, VA 20151 JOHN POMPONIO 1702 WOODMERE WAY HAVERTOWN, PA 19083 MICHAEL BURKE 12201 PLEASANT PROSPECT MITCHELVILLE, MD 20721</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section 11b, Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PREPARED BY A CPA AND SENT TO TWO OFFICERS TO REVIEW. THE OFFICERS ALSO SEND A COPY TO ALL BOARD MEMBERS PRIOR TO FILING. COMMENTS AND REVISIONS ARE RETURNED TO THE CPA VIA EMAIL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section 12c, Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION REVIEWS POSSIBLE CONFLICTS OF INTEREST WHENEVER A NEW PROJECT STARTS. THE MAJORITY OF THE PROJECT ARE PUBLIC SECTOR OR ARE PUBLICLY FUNDED THROUGH GRANTS AND INCLUDE A CONFLICT OF INTEREST POLICY. REVIEWS ARE ALSO CONDUCTED WHEN A NEW EMPLOYEE IS HIRED. IN ADDITION, A REVIEW IS ALSO PERFORMED AT THE SEMI-ANNUAL BOARD MEETINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION FOR THE EXECUTIVE DIRECTOR IS REVIEWED ANNUALLY UPON EMPLOYMENT ANNIVERSARY. THE REVIEW IS CONDUCTED BY A BOARD MEMBER. PERFORMANCE AND COST OF LIVING ADJUSTMENTS AS SET BY THE SSA AND A REVIEW OF EQUIVALENT POSITIONS BASED ON TECHNICAL AND PROFESSIONAL EXPERIENCE IN SIMILAR PUBLIC SECTOR JOBS IS USED IN DETERMINING WHETHER / WHAT RAISE IS WARRANTED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, POLICIES AND FINANCIAL STATEMENTS ARE PROVIDED UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
