Who We Are

CHJ Consultants is a California corporation and currently employs a staff of over 40 personnel. Our professional staff includes Geotechnical Engineers, Civil Engineers, Engineering Geologists and Environmental Assessors.

From our main office and laboratory in Colton to our high and low desert offices and laboratories in Victorville and Palm Desert, we are able to service projects throughout San Bernardino, Riverside, Los Angeles, and Orange Counties.

Our professional staff possesses registrations within their disciplines; many of our technical personnel possess specialty certifications in materials testing, concrete and masonry inspection, and certifications to perform inspection of welding, bolting and erection of structural steel buildings.


Our Laboratory is approved by the State of California, Division of the State Architect (DSA) and the Office of Statewide Health Planning and Development (OSPHD) to perform testing and inspection for public schools and hospitals.

Our laboratory is also approved by the City of Los Angeles, California Department of Transportation (Caltrans), and the U.S. Army Corps of Engineers.


California Department of Transportation
Cement and Concrete Reference Laboratory
Army Corps of Engineers
California Department of General Services - State Architect LEA
City of Los Angeles - Department of Building and Safety

Professional Society Memberships
Woman's Transportation Seminar (WTS)
California Asphalt Pavement Association
American Public Works Association
American Council of Engineering Companies (ACEC)

Our company and staff are members of many professional organizations including:
American Society of Civil Engineers
The Geological Society of America
American Society for Testing and Materials
American Concrete Institute
American Society for Nondestructive Testing
Seismological Society of America
Structural Engineers Association of California
Earthquake Engineering Research Institute



CHJ Consultants is a Full-Service Geotechnical Engineering, Materials Testing, Construction Inspection, Environmental, and Consulting Firm