State of the Art Network of Accredited Laboratories

With a network of sophisticated laboratories throughout California and more than three hundred team members, Twining can effectively service the state’s most critical structures and greatest attractions, landmarks, destinations, and work spaces.

Corporate Headquarters
2883 East Spring Street, Suite 300
Long Beach, CA 90806
Phone: 562.426.3355
Fax: 562.426.6424

Main Laboratory
3310 Airport Way
Long Beach, CA 90806
Phone: 562.426.3355
Fax: 562.426.6424

Bay Area Office
5027 Commercial Circle, Suite G
Concord, CA 94520
Phone: 925.849.8186

Riverside Office
111 Main Street, Unit A
Riverside, CA 92501
Phone: 909.383.6660
Fax: 909.890.4299

San Diego Office
15950 Bernardo Center Drive, Suite G
San Diego, CA 92127
Phone: 858.974.3750
Fax: 858.974.3752

Ventura Office
1879 Portola Road, Suite G
Ventura, CA 93003
Phone: 805.644.5100
Fax: 805.644.5179

Sacramento Office
1572 Santa Ana Avenue
Sacramento, CA 95838
Phone: 916.830.2667
Fax: 916.921.8532