Our Chief Executive Officer, Wanda M. Martinez founded the firm in 1983...she was our first employee.


Ms. Martinez secured several engineering support contracts primarily with the City of Los Angeles, Bureau of Sanitation, which sectors are now referred to as the Bureau of Engineering and Environmental Engineering Division.


Ms. Martinez became small business certified with the Federal Government winning over $15 million dollar engineering and environmental restoration contracts with the U. S. Navy, Naval Facilities Engineering Service Command (NFESC), U. S. Navy, Southwest Division (SWDIV) and U. S. Navy Headquarters at the Pentagon.

1996 - 2000

Ms. Martinez, assisted by her management team and highly respected engineers and scientists, were awarded several multi-million dollar contracts with the U. S. Department of Interior, Bureau of Reclamation, Mid-Pacific Region, the U. S. Army Corps of Engineers, Los Angeles and Sacramento Districts.

For three decades, DRC has enjoyed new and repeat business with our local, state, and federal clients.

DRC maintains multi-year contracts with the City of Los Angeles, Port of Los Angeles, Port of Long Beach, Los Angeles Department of Water and Power, U. S. Army Corps of Engineers, Bureau of Reclamation, the Los Angeles County Metropolitan Transportation Authority, Metropolitan Water District of Southern California and numerous water agencies, special districts, and municipal clients. DRC has met or exceeded the requirements on every contract. We consistently receive high performance ratings, client commendations, and a high rate of follow-on and repeat business. A trusted partner to our clients, we draw together teams of engineers, planners, architects, landscape architects, environmental specialists, economists, scientists, consultants, as well as cost construction, project and program managers dedicated to finding the most innovative and appropriate solutions to create, enhance, and sustain all projects assigned to DRC. The firm has won several engineering excellence awards from the American Public Works Association and the Los Angeles Council of Engineers and Scientists.