The principals of GSI have been consulting in their field since the late 1950’s and early 1960’s, with over 100 combined years of experience in the Southern California area. GSI has the ability to meet the needs of clients across the greater Los Angeles area, Ventura, San Bernardino, Orange County, San Diego County, the Inland Empire, and Kern County.

Together with much of the staff, we have worked as a team for over 20+ years; we believe this continuity is unique amongst geotechnical firms in Southern California and represents a valuable asset to our clients.