Independent Geo-Environmental

American Geotechnical, founded in 1984 and headquartered in Yorba Linda, Calif., is one of the leading geotechnical consulting firms in the western United States. The company s services include foundation design and performance testing, feasibility studies, property reviews, geotechnical distress investigations, third-party project and plan reviews, and new construction observation and testing. It also provides slope stability and landslide evaluations, earthquake and fault studies, moisture intrusion and groundwater studies, forensic studies and foundation renovations, and ground movement and stability monitoring. American Geotechnical has state-of-the-art laboratory facilities in San Diego and Orange County offices in California. It is licensed as a testing agency by the Los Angeles Department of Building and Safety and by the American Association of State Highway and Transportation Officials.

Willdan Geotechnical offers an array of geology/geotechnical engineering capabilities to its clients. Its state-of-the-art facility houses a soil testing laboratory certified by the City of Los Angeles and the California Department of Transportation. The company holds certification by the California Division of the State Architect. It performs geotechnical testing on all state school projects within California. Willdan Geotechnical provides geotechnical engineering, construction material testing and inspection services. The company has completed a wide array of projects in infrastructure improvements, transportation, port/harbor, essential facilities, parks and recreational installations. Its host of clients includes the U.S. Army Corps of Engineers, City of Agoura Hills, Boeing Realty Corporation, Southern California Logistics Airport, etc. Some of the firm s projects include the Los Angeles River Bridge repair/replacement and Kanan Road/101 Interchange Design.