HCAI Preapproved Laboratory (OPL) Program*

Approved Testing Agencies/Laboratories for Structural Tests

HCAI Preapproved Laboratory (OPL)Number	Approved Laboratory Name	City	County	State (Use Country Name for non-US Labs)	ZIP Code	Approval Expiration Date	Comments
OPL-0001-14	Dynamic Certification Laboratories (DCL)	Sparks	Washoe	Nevada	89431	Expired	See OPAA-0008-16
OPL-0002-14	CHJ	Colton	San Bernardino	California	92324	Expired	See OPAA-0014-16
OPL-0003-14	CHJ	Victorville	San Bernardino	California	92392	Expired
OPL-0004-14	Caltech Labs	Brea	Orange	California	92821	Expired	See OPAA-0033c-16
OPL-0005-14	Applied Technical Services (ATS)	Marietta	Cobb	Georgia	30062	Expired
OPL-0006-14	Consolidated Engineering Laboratories (CEL)	Oakland	Alameda	California	94606	Expired	See OPAA-0039-16
OPL-0007-14	Construction Testing & Engineering, Inc. (CTE)	Escondido	San Diego	California	92026	Expired
OPL-0008-14	CTE South, Inc.	Oxnard	Ventura	California	93033	Expired
OPL-0009-14	CTE South, Inc.	Riverside	Riverside	California	92518	Expired
OPL-0010-14	American Engineering Laboratories, Inc.	La Habra	Orange	California	90631	Expired	See OPAA-0058-19
OPL-0011-14	United Inspection & Testing	Moreno Valley	Riverside	California	92553	Expired	See OPAA-0037-16
OPL-0012-14	Consolidated Engineering Laboratories (CEL)	Windsor	Sonoma	California	95492	Expired	See OPAA-0043-16
OPL-0013-14	BSK Associates	Livermore	Alameda	California	94551	Expired	See OPAA-0054-16
OPL-0014-14	DC Inspections, Inc.	Bakersfield	Kern	California	93308	Expired
OPL-0015-14	Smith-Emery Laboratories	Los Angeles	Los Angeles	California	90021	Expired	See OPAA-0023-16
OPL-0016-15	BSK Associates	Bakersfield	Kern	California	93301	Expired	See OPAA-0019-16
OPL-0017-15	Technicon Engineering Services, Inc.	Fresno	Fresno	California	93722	Expired
OPL-0018-15	Consolidated Engineering Laboratories (CEL)	North Highlands	Sacramento	California	95660	Expired	See OPAA-0050-16
OPL-0019-15	Certified Inspection Labs	South El Monte	Los Angeles	California	91733	Expired	See OPAA-0021-16
OPL-0020-15	Smith-Emery San Francisco	San Francisco	San Francisco	California	94124	Expired	See OPAA-0036-16
OPL-0021-15	Indpsolutions, Inc. dba Independent Solutions	Lake Elsinore	Riverside	California	92530	Expired	See OPAA-0028-16
OPL-0022-15	Mid Pacific Engineering, Inc.	West Sacramento	Yolo	California	95605	Expired
OPL-0023-15	Kleinfelder	Hayward	Alameda	California	94545	Expired	See OPAA-0063-19
OPL-0024-15	Southern California Soil & Testing, Inc.	San Diego	San Diego	California	92120	Expired
OPL-0025-15	NV5 West, Inc.	Ventura	Ventura	California	93003	Expired	See OPAA-0044-16
OPL-0026-15	Kleinfelder	Sacramento	Sacramento	California	95827	Expired
OPL-0027-15	RMA Group, Inc.	Rancho Cucamonga	San Bernardino	California	91730	Expired	See OPAA-0027-16
OPL-0028-15	Twining, Inc.	San Bernardino	San Bernardino	California	92408	Expired	See OPAA-0011-16
OPL-0029-15	Twining, Inc.	Ventura	Ventura	California	93003	Expired	See OPAA-0005-16
OPL-0030-15	Twining, Inc.	Long Beach	Los Angeles	California	90806	Expired	See OPAA-0013-16
OPL-0031-15	Structure Materials Group	Livermore	Alameda	California	94550	Expired	See OPAA-0034-16
OPL-0032-15	Holdrege & Kull Consulting Engineers & Geologist	Nevada City	Nevada	California	95959	Expired
OPL-0033-15	Progressive Engineering Inc.	Goshen	Elkhart	Indiana	46528	Expired	See OPAA-0024-16
OPL-0034-15	Twining, Inc.	Irvine	Orange	California	92614	Expired	See OPAA-0017-16
OPL-0035-15	Inspection Services, Inc.	Berkeley	Alameda	California	94703	Expired	See OPAA-0032-16
OPL-0036-15	Twining, Inc.	San Diego	San Diego	California	92127	Expired	See OPAA-0049-16
OPL-0037-15	Signet Testing Laboratories, Inc.	Hayward	Alameda	California	94545	Expired	See OPAA-0064-19
OPL-0038-15	Moore Twining Associates, Inc.	Sand City	Monterey	California	93955	Expired	See OPAA-0062-19
OPL-0039-15	Inspection Services, Inc.	Torrance	Los Angeles	California	90501	Expired	See OPAA-0030-16
OPL-0040-15	Southwest Research Institute	San Antonio	Bexar	Texas	78227	Expired	See OPAA-0001-16
OPL-0041-15	MTGL, Inc.	San Diego	San Diego	California	92121	Expired	See OPAA-0047-16
OPL-0042-15	Kleinfelder, Inc.	San Diego	San Diego	California	92111	Expired	See OPAA-0042a-16
OPL-0043-16	Geocon West, Inc.	Murrieta	Riverside	California	92562	Expired
OPL-0044-16	Christian Wheeler Engineering	San Diego	San Diego	California	92105	Expired	See OPAA-0051-16
OPL-0045-16	Kleinfelder, Inc.	Ontario	San Bernardino	California	91762	Expired	See OPAA-0062-19
OPL-0046-16	Twining, Inc.	Sacramento	Sacramento	California	95838	Expired	See OPAA-0057-19
OPL-0047-16	Krazan & Associates, Inc.	Bakersfield	Kern	California	93307	Expired
OPL-0048-16	CEL Consulting, Inc.	Oakland	Alameda	California	94606	Expired	See OPAA-0041-16
OPL-0049-16	Krazan & Associates, Inc.	Clovis	Fresno	California	93612	Expired
OPL-0050-16	Nova Services, Inc.	San Diego	San Diego	California	92123	Expired
OPL-0051-16	Moore Twining Associates, Inc.	Fresno	Fresno	California	93721	Expired	See OPAA-0006-19

For accessible copies of preapprovals email the FDD Webmaster.