﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2025v4.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-04-15T11:32:13-04:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>731139727</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>WILLIAMS &amp; CO CPA'S INC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1503 NO WASHINGTON</AddressLine1Txt>
        <CityNm>DURANT</CityNm>
        <StateAbbreviationCd>OK</StateAbbreviationCd>
        <ZIPCd>74701</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>731093611</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>OKLAHOMA ONE-CALL SYSTEM INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>OKLA</BusinessNameControlTxt>
      <PhoneNum>4058409955</PhoneNum>
      <USAddress>
        <AddressLine1Txt>6908 N ROBINSON AVE</AddressLine1Txt>
        <CityNm>OKLAHOMA CITY</CityNm>
        <StateAbbreviationCd>OK</StateAbbreviationCd>
        <ZIPCd>73116</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>SUSAN BOHL</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIRECTOR</PersonTitleTxt>
      <PhoneNum>4058409955</PhoneNum>
      <SignatureDt>2026-03-10</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>AUTUMN L WILLIAMS</PreparerPersonNm>
      <PTIN>P01275073</PTIN>
      <PhoneNum>5809200340</PhoneNum>
      <PreparationDt>2026-03-18</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990 documentId="RetDoc1" referenceDocumentId="RetDoc4">
      <PrincipalOfficerNm>SUSAN BOHL</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>6908 N ROBINSON AVE</AddressLine1Txt>
        <CityNm>OKLAHOMA CITY</CityNm>
        <StateAbbreviationCd>OK</StateAbbreviationCd>
        <ZIPCd>73116</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>7293637</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501cInd organization501cTypeTxt="6">X</Organization501cInd>
      <WebsiteAddressTxt>WWW.OKIE811.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1979</FormationYr>
      <LegalDomicileStateCd>OK</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO PROVIDE QUALITY UNDERGROUND DAMAGE PREVENTION SERVICES IN OKLAHOMA.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>10</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>13</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>60</TotalEmployeeCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>6326410</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>6775527</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>416933</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>335383</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>109553</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>182727</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>6852896</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>7293637</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>3874297</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>4035105</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>2339218</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>2526950</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>6213515</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>6562055</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>639381</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>731582</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>14316739</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>15433345</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>4930065</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>4992680</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>9386674</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>10440665</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>TO PROVIDE QUALITY UNDERGROUND DAMAGE PREVENTION SERVICES IN OKLAHOMA.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>5323774</ExpenseAmt>
      <Desc>PREVENTION OF DAMAGE TO UNDERGROUND SYSTEMS, NOTIFICATION TO MEMBERS OF ANY PROPOSED DEMOLITION, EXCAVATION IN THE AREA OF THEIR FACILITIES IN ADDITION, PROVIDE EDUCATION AND AWARENESS FOR UNDERGROUND DAMAGE PREVENTION FOR ALL FACILITY OWNERS AS WELL AS PIPELINE AWARENESS FOR GENERAL, CONTRACTORS, EMERGENCY AND PUBLIC OFFICIALS.</Desc>
      <TotalProgramServiceExpensesAmt>5323774</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind>false</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc2">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc2">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc2">false</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc2">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="RetDoc2">false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc2">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc2">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc2">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc2">false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc2">false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc2">false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc2">true</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc2">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="RetDoc3">true</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <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>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>4</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>60</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>10</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>13</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>true</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</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>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>OK</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>ORGANIZATION</PersonNm>
        <PhoneNum>4058409955</PhoneNum>
        <USAddress>
          <AddressLine1Txt>6908 N ROBINSON AVE</AddressLine1Txt>
          <CityNm>OKLAHOMA CITY</CityNm>
          <StateAbbreviationCd>OK</StateAbbreviationCd>
          <ZIPCd>73116</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>SUSAN BOHL</PersonNm>
        <TitleTxt>EXECUTIVE DI</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>297515</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JERRELL WELCH</PersonNm>
        <TitleTxt>DIR. OF OPER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>165641</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANGIE NIEMEYER</PersonNm>
        <TitleTxt>DIR. OF B &amp;</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>129684</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>TROY DANIELS</PersonNm>
        <TitleTxt>IT &amp; GIS MAN</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>124165</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHRIS BREEDING</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GREG CLARKSON</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SOBRONIA CONLEY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHAD GUTHRIE</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL HUMPHRIES</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DREW MILLER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CLINT MOBLEY</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BOBBY PETERS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JIM PROSZEK</PersonNm>
        <TitleTxt>ADVISORY</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GRACIE REISS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BRANDON RENFRO</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NICOLE RHODES</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>TIM YOUNG</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>717005</TotalReportableCompFromOrgAmt>
      <IndivRcvdGreaterThan100KCnt>4</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP FEES</Desc>
        <BusinessCd>541300</BusinessCd>
        <TotalRevenueColumnAmt>6165311</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>6165311</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>SERVICE INCOME</Desc>
        <BusinessCd>541300</BusinessCd>
        <TotalRevenueColumnAmt>610216</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>610216</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>6775527</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>335383</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>335383</RelatedOrExemptFuncIncomeAmt>
      </InvestmentIncomeGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER INCOME</Desc>
        <TotalRevenueColumnAmt>182727</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>182727</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>182727</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>7293637</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>7293637</RelatedOrExemptFuncIncomeAmt>
      </TotalRevenueGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>3596585</TotalAmt>
        <ProgramServicesAmt>2884461</ProgramServicesAmt>
        <ManagementAndGeneralAmt>712124</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>136323</TotalAmt>
        <ProgramServicesAmt>109331</ProgramServicesAmt>
        <ManagementAndGeneralAmt>26992</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>43298</TotalAmt>
        <ProgramServicesAmt>34725</ProgramServicesAmt>
        <ManagementAndGeneralAmt>8573</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>258899</TotalAmt>
        <ProgramServicesAmt>207637</ProgramServicesAmt>
        <ManagementAndGeneralAmt>51262</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>24507</TotalAmt>
        <ProgramServicesAmt>19655</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4852</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <AdvertisingGrp>
        <TotalAmt>228286</TotalAmt>
        <ProgramServicesAmt>223720</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4566</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>51121</TotalAmt>
        <ProgramServicesAmt>40999</ProgramServicesAmt>
        <ManagementAndGeneralAmt>10122</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <OccupancyGrp>
        <TotalAmt>22817</TotalAmt>
        <ProgramServicesAmt>18299</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4518</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>88442</TotalAmt>
        <ProgramServicesAmt>70930</ProgramServicesAmt>
        <ManagementAndGeneralAmt>17512</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>58719</TotalAmt>
        <ProgramServicesAmt>57545</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1174</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>101586</TotalAmt>
        <ProgramServicesAmt>81472</ProgramServicesAmt>
        <ManagementAndGeneralAmt>20114</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>62473</TotalAmt>
        <ProgramServicesAmt>50103</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12370</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>INSURANCE - GROUP HEALTH</Desc>
        <TotalAmt>757611</TotalAmt>
        <ProgramServicesAmt>607604</ProgramServicesAmt>
        <ManagementAndGeneralAmt>150007</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>COMPUTER SUPPORT &amp; INFORM</Desc>
        <TotalAmt>553551</TotalAmt>
        <ProgramServicesAmt>443948</ProgramServicesAmt>
        <ManagementAndGeneralAmt>109603</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>OUTSIDE SERVICES</Desc>
        <TotalAmt>186593</TotalAmt>
        <ProgramServicesAmt>149648</ProgramServicesAmt>
        <ManagementAndGeneralAmt>36945</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>COMMUNICATIONS</Desc>
        <TotalAmt>119673</TotalAmt>
        <ProgramServicesAmt>95978</ProgramServicesAmt>
        <ManagementAndGeneralAmt>23695</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>271571</TotalAmt>
        <ProgramServicesAmt>227719</ProgramServicesAmt>
        <ManagementAndGeneralAmt>43852</ManagementAndGeneralAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>6562055</TotalAmt>
        <ProgramServicesAmt>5323774</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1238281</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>250374</BOYAmt>
        <EOYAmt>252726</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>4468591</BOYAmt>
        <EOYAmt>7267726</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>3152773</BOYAmt>
        <EOYAmt>1151159</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>183371</BOYAmt>
        <EOYAmt>81182</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>3368331</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>739846</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>2638283</BOYAmt>
        <EOYAmt>2628485</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>3623347</BOYAmt>
        <EOYAmt>4052067</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>14316739</BOYAmt>
        <EOYAmt>15433345</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>108</BOYAmt>
        <EOYAmt>32396</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>4929957</BOYAmt>
        <EOYAmt>4960284</EOYAmt>
      </DeferredRevenueGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>4930065</BOYAmt>
        <EOYAmt>4992680</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>9386674</BOYAmt>
        <EOYAmt>10440665</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>9386674</BOYAmt>
        <EOYAmt>10440665</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>14316739</BOYAmt>
        <EOYAmt>15433345</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>731582</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>322409</NetUnrlzdGainsLossesInvstAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>true</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="RetDoc2">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>483745</OtherCostOrOtherBasisAmt>
        <BookValueAmt>483745</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>2533118</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>521401</DepreciationAmt>
        <BookValueAmt>2011717</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>351468</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>218445</DepreciationAmt>
        <BookValueAmt>133023</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>2628485</TotalBookValueLandBuildingsAmt>
      <TotalRevEtcAuditedFinclStmtAmt>7293637</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>7293637</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>7293637</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>6562055</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>6562055</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>6562055</TotalExpensesPerForm990Amt>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc3">
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SUSAN BOHL</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>297515</BaseCompensationFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>297515</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JERRELL WELCH</PersonNm>
        <TitleTxt>DIR. OF OPERATIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>165641</BaseCompensationFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>165641</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc4">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>OKLAHOMA ONE-CALL SYSTEM HAS MEMBERS WHO PAY DUES AND ARE ALLOWED TO USE THE DATABASE OF THE ORGANIZATION TO PREVENT DAMAGES TO PUBLIC SERVICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS REVIEW THE FORM 990 PRIOR TO FILING THE RETURN WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS REVIEW EACH DIRECTORS COMPLIANCE WITH THE ORGANIZATION'S CONFLICT OF INTEREST POLICY ON AN ANNUAL BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ABBOT LANGER STUDY AND DEPARTMENT OF LABOR RECORDS ARE USED TO DETERMINE APPROPRIATE SALARIES. THE BOARD OF DIRECTORS APPROVE THE SALARY PLAN WITH WAGE BANDS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC AT THE ORGANIZATION'S PRIMARY LOCATION IN OKLAHOMA CITY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>