OSHPD Preapproved Agency (OPAA)*

Approved Agencies for Structural Tests and Special Inspections

OSHPD Preapproved Agency (OPAA)NumberApproved Agency NameCityCountyState

(Use Country Name for non-US Labs)
ZIP CodeServices ProvidedApproval Expiration DateComments
 TestingSpeical Inspections 
OPAA-0001-16Southwest Research InstituteSan AntonioBexarTexas78227YesNoExpired 
OPAA-0002-16Ninyo and MooreSan DiegoSan DiegoCA92123YesYesExpired 
OPAA-0003-16
Achievement EngineeringSan JoseSanta ClaraCA95131YesYes10/18/2020See Attachment
OPAA-0004-16
Applied Materials & EngineeringOaklandAlamedaCA94608YesYes03/22/2020See Attachment
OPAA-0005-16
TwiningVenturaVenturaCA93003YesYes03/07/2020See Attachment
OPAA-0006-16
Moore TwiningFresnoFresnoCA93721YesYes05/29/2020See Attachment
OPAA-0007-16
IABGOttobrunn (Munich)BavariaGermanyD-85521YesNo12/17/2022See Attachment
OPAA-0008-16
DCLSparksWashoeNV89431YesNo01/24/2023See Attachment
OPAA-0009-16
Group Delta ConsultantsSan DiegoSan DiegoCA92126YesYes09/15/2020See Attachment
OPAA-0010-16
Kleinfelder WestOntarioSan BernardinoCA91762YesYes07/01/2020See Attachment
OPAA-0011-16TwiningRiversideRiversideCA91730YesYes10/02/2020See Attachment
OPAA-0012-16
SCSTSan DiegoSan DiegoCA92120YesYes04/25/2021See Attachment
OPAA-0013-16
Twining Inc.Long BeachLos AngelesCA90806YesYes04/25/2021See Attachment
OPAA-0014-16Terracon Consultants, Inc.ColtonSan BernardinoCA92324YesYes02/23/2021See Attachment
OPAA-0015-16RMA GroupRancho CordovaSacramentoCA95742YesYes12/28/2019See Attachment
OPAA-0016-16Fenagh Engineering and Testing, LLC.Rancho CucamongaSan BernardinoCA91730YesYes11/15/2021See Attachment
OPAA-0017-16TwiningIrvineOrangeCA92614YesYes04/15/2019See Attachment
OPAA-0018-16JE & B Engineering, Inc.City of IndustryLos AngelesCA91744YesYes8/30/2021See Attachment
OPAA-0019-16BSK AssociatesBakersfieldKernCA93301YesYes4/25/2021See Attachment
OPAA-0020-16Construction Testing ServicesPleasantonAlameda CountyCA94588YesYes10/01/2020See Attachment
OPAA-0021-16Certified Inspection LabsAnaheimOrangeCA92802YesYes03/12/2024See Attachment
OPAA-0022-16Leighton Consulting Inc.San DiegoSan DiegoCA92123YesYes05/10/2021See Attachment
OPAA-0023-16Smith-Emery LaboratoriesLos AngelesLos AngelesCA90021YesYes01/01/2020See Attachment
OPAA-0024-16Progressive Engineering, Inc.GoshenElkhartIN46528YesNo05/01/2019See Attachment
OPAA-0025-16Soils Engineering, Inc.BakersfieldKernCA93313YesYes10/24/2020See Attachment
OPAA-0026-16GeoSolutions, IncSan Luis ObispoSan Luis ObispoCA93401YesYes03/02/2024See Attachment
OPAA-0027-16RMA GroupRancho CucamongaSan BernardinoCA91730YesYes07/31/2019See Attachment
OPAA-0028-16Independent SolutionsLake ElsinoreRiversideCA92530YesYes03/23/2024See Attachment
OPAA-0029-16Ninyo and MooreSan JoseSanta ClaraCA95131YesYes05/03/2019See Attachment
OPAA-0030-16Inspection Services Inc.TorranceLos AngelesCA90501YesYes04/27/2024See Attachment
OPAA-0031-16Wallace-Kuhl & AssociatesWest SacramentoYoloCA95691YesYes09/10/2021See Attachment
OPAA-0032-16Inspection Services, Inc. BerkeleyAlamedaCA94703YesYesIn ReviewIn Review
OPAA-0033-16Caltech Labs, Inc. BreaOrangeCA92821YesYes03/25/2022See Attachment
OPAA-0034-16Structure GroupsLivermoreAlamedaCA94550YesYes02/10/2019See Attachment
OPAA-0035-16California Testing & InspectionParamountLos AngelesCA90723YesYes06/30/2021See Attachment
OPAA-0036-16Smith-Emery San FranciscoSan FranciscoSan FranciscoCA94124YesYes04/06/2022See Attachment
OPAA-0037-16United Testing, LLCMoreno ValleyRiversideCA92553YesYes09/10/2021See Attachment
OPAA-0038-16MatriScope Engineering Laboratories, Inc.SacramentoSacramentoCA95811YesYes05/03/2020See Attachment
OPAA-0039-16Consolidated Engineering LaboratoriesOaklandAlamedaCA94606YesYes10/16/2019See Attachment
OPAA-0041-16CEL ConsultingOaklandAlamedaCA94606YesNo07/01/2019See Attachment