RMA Group is a client-centered geotechnical engineering and materials testing consulting firm with office and laboratory faci ... lities located in Rancho Cucamonga, Carson, Concord, Rancho Cordova, San Diego, and San Jose California. The firm was established in 1962 and specializes in providing geotechnical engineering, pavement engineering, construction materials testing, special inspection services, environmental engineering, and storm water management. read more