OSHPD Preapproved Agency (OPAA)*

Approved Agencies for Structural Tests and Special Inspections

OSHPD Preapproved Agency (OPAA) NumberAgencyCityCountyState (Use Country name for non-US Labs)ZIP CodeTestingSpecial InspectionsApproval Expiration DateComments
OPAA-0001-16Southwest Research instituteSan AntonioBexarTexas78227YesNo3/31/2018Expired
OPAA-0002-16Ninyo and MooreSan DiegoSan DiegoCA92123YesYesIn ReviewIn Review
OPAA-0003-16Achievement EngineeringSan JoseSanta Clara CountyCA95131YesYes10/18/2020Expired
OPAA-0004-19Applied Materials & EngineeringOaklandAlamedaCA94608YesYes3/22/2024See Attachment
OPAA-0005-19TwiningVenturaVenturaCA93003YesYes3/7/2024See Attachment
OPAA-0006-19Moore TwiningFresnoFresnoCA93721YesYes6/28/2021Expired
OPAA-0007-16IABGOttobrunn (Munich)BavariaGermanyD-85521YesNo12/17/2022See Attachment
OPAA-0008-16DCLSparksWashoeNV89431YesNo1/24/2023See Attachment
OPAA-0009-16Group Delta ConsultantsSan DiegoSan DiegoCA92126YesYes2/15/2021Expired
OPAA-0010-19Kleinfelder WestOntarioSan BernardinoCA91762YesYes10/20/2021See Attachment
OPAA-0011-16TwiningRiversideRiversideCA92501YesYes10/2/2020Expired
OPAA-0012a-16SCSTSan DiegoSan DiegoCA92120YesYes4/25/2021Expired
OPAA-0013-16Twining Inc.Long BeachLos AngelesCA90806YesYes4/25/2021See Attachment
OPAA-0014-16Terracon Consultants, Inc. ColtonSan BernardinoCA92324YesYes2/23/2021Expired
OPAA-0015b-19RMA GroupRancho CordovaSacramentoCA95742YesYes12/28/2023See Attachment
OPAA-0016a-16Fenagh Engineering and Testing, LLCRancho CucamongaSan BernardinoCA91730YesYes11/15/2021See Attachment
OPAA-0017-19TwiningIrvineOrangeCA92614YesYesIn ReviewIn Review
OPAA-0018-16JE & B Engineering, Inc.City of IndustryLos AngelesCA91744YesYes8/30/2021See Attachment
OPAA-0019-16BSK AssociatesBakersfieldKernCA93301YesYes4/25/2021Expired
OPAA-0020-19Construction Testing ServicesPleasantonAlameda CountyCA94588YesYes5/8/2021Expired
OPAA-0021-16Certified Inspection Labs Inc.AnaheimOrangeCA92802YesYes3/12/2024See Attachment
OPAA-0022-16Leighton Consulting IncSan DiegoSan DiegoCA92123YesYes5/10/2021Expired
OPAA-0023-16SMITH-EMERY LABORATORIESLos AngelesLos AngelesCA90021YesYes8/20/2021See Attachment
OPAA-0024-19Progressive Engineering, IncGoshenElkhartIN46528YesNo5/1/2021Expired
OPAA-0025-16Soils Engineering, Inc.BakersfieldKernCA93313YesYes10/24/2020Expired
OPAA-0026a-16GeoSolutions, IncSan Luis ObispoSan Luis ObispoCA93401YesYes3/2/2024See Attachment
OPAA-0027a-16RMA GroupRancho CucamongaSan BernardinoCA91730YesYes4/25/2021Expired
OPAA-0028-16Independent SolutionsLake ElsinoreRiversideCA92530YesYes9/16/2026See Attachment
OPAA-0029-16Ninyo and MooreSan JoseSanta ClaraCA95131YesYes5/3/2019Expired
OPAA-0030-16Inspection Services, Inc.TorranceLos AngelesCA90501YesYes4/27/2024See Attachment
OPAA-0031a-16Wallace-Kuhl & AssociatesWest SacramentoYoloCA95691YesYes9/10/2021See Attachment
OPAA-0032-16Inspection Services, Inc.BerkeleyAlamedaCA94703YesYes10/13/2021See Attachment
OPAA-0033c-16Caltech Labs, Inc.BreaOrangeCA92821YesYes3/25/2022See Attachment
OPAA-0034-16STRUCTURE GROUPSLivermoreAlamedaCA94550YesYes2/10/2023See Attachment
OPAA-0035-16California Testing & InspectionParamountLos AngelesCA90723YesYes6/30/2021Expired
OPAA-0036-16Smith-Emery San FranciscoSan FranciscoSan FranciscoCA94124YesYes4/6/2022See Attachment
OPAA-0037-16United Testing, LLCMoreno ValleyRiversideCA92553YesYes9/10/2021See Attachment
OPAA-0038-19MatriScope Engineering Laboratories, IncSacramentoSacramentoCA95811YesYes3/3/2021Expired
OPAA-0039-19Consolidated Engineering LaboratoriesOaklandAlamedaCA94606YesYes10/16/2023See Attachment
OPAA-0040-16Southwest Inspection and TestingLa HabraOrangeCA90631YesYes2/23/2021Expired
OPAA-0041-16CEL ConsultingOaklandAlamedaCA94583YesNo7/1/2022See Attachment
OPAA-0042a-16Kleinfelder , Inc.San DiegoSan DiegoCA92111YesYes9/25/2022See Attachment
OPAA-0043-16Consolidated Engineering LaboratoriesWindsorSonomaCA95492YesYes7/11/2021Expired
OPAA-0044-16NV5 West, Inc.VenturaVenturaCA93003YesNoIn ReviewIn Review
OPAA-0045-16Terracon Consultants, Inc. SacramentoSacramentoCA95834YesYes9/7/2021See Attachment
OPAA-0046a-16Construction Testing Services, Inc.RocklinPlacerCA95677YesYes6/13/2021Expired
OPAA-0047-16MTGL, IncSan DiegoSan DiegoCA92121YesYes4/22/2021Expired
OPAA-0048-19MTGL, IncAnaheimOrangeCA92806YesYes4/6/2024See Attachment
OPAA-0049-16Twinning, IncSan DiegoSan DiegoCA92127YesYes3/28/2023See Attachment
OPAA-0050-16Conslidated Engineering LaboratoriesNorth HighlandsSacramentoCA95660YesYes11/1/2022See Attachment
OPAA-0051-16Christian Wheeler EngineeringSan DeigoSan DiegoCA92105YesYes11/25/2022See Attachment
OPAA-0052-16Interteck Architectural testing IncFresnoFresnoCA93706YesNoIn ReviewIn Review
OPAA-0053-16RMA GroupSan JoseSanta ClaraCA95112YesYes11/9/2022See Attachment
OPAA-0054-19BSK AssociatesLivermoreAlamedaCA94551YesYes7/28/2021See Attachment
OPAA-0055-19Landmark Consultants, Inc.El CentroImperialCA92243YesYes4/25/2021Expired
OPAA-0056-19Apex Testing LabsSan FranciscoSan FranciscoCA94124YesYes2/10/2021Expired
OPAA-0057-19TwiningSacramentoSacramentoCA95838YesYesIn ReviewIn Review
OPAA-0058-19American Engineering LaboratoriesLa HabraOrangeCA90631YesYes7/20/2021Expired
OPAA-0059-19Koury Engineering & Testing, IncChinoSan BernardinoCA91710YesYes3/15/2022See Attachment
OPAA-0060-19GeoSoils, IncCalsbadSan DiegoCA92010YesNo6/30/2026See Attachment
OPAA-0061-19Moore TwiningSacramentoSacramentoCA95815YesYes12/1/2022See Attachment
OPAA-0062-19Moore TwiningSand CityMontereyCA93955YesYes5/12/2023See Attachment
OPAA-0063-19KleinfelderHaywardAlamedaCA94545YesYesIn ReviewIn Review
OPAA-0064-19Signet Testing Laboratories, IncHaywardAlamedaCA94546YesYes7/11/2023See Attachment
OPAA-0065-19Matriscope Engineering Laboratories, INC.LivermoreAlamedaCA94551YesYesIn ReviewIn Review
OPAA-0066-19Moore Twining Associates, Inc.RiversideRiversideCA92503YesYesIn ReviewIn Review

For accessible copies of preapprovals email the FDD Webmaster.