About ADH Environmental

Summit Lake

ADH Technical Services, Inc. dba ADH Environmental (ADH) is a California Corporation established in 1999.  As an environmental consulting services corporation, ADH’s staff is comprised of storm water and surface water quality management professionals, professionally certified engineers, professional geologists, engineering geologists, qualified SWPPP developers  and practitioners, hydrogeologists, oceanographers, biologists, and database management personnel.  ADH staff have up to 30 years of experience in serving both public and private sector clients.

ADH’s staff includes 15 full- and over 20 part-time employees and reputable independent professional associates who have devoted their time and energies to the success of ADH. ADH’s corporate offices are located in Soquel, California, with regional offices located in McKinleyville and Redding. ADH is a very nimble corporation able to provide our services throughout central and northern California for a broad spectrum of work ranging from small/routine projects to large/high profile projects requiring an elevated degree of business and technical sophistication.

ADH is certified as an 8(a) and a Small Disadvantaged Business (SDB) by the U.S. Small Business Administration, as a Disadvantaged Business Enterprise (DBE) by the California Unified Certification Program (Caltrans), as a Minority Business Enterprise (MBE) by the California Public Utilities Commission, and as a Micro Business (MB) by the California Department of General Services. Thus, in addition to providing superior consulting services, ADH can assist our clients in meeting important diversity supplier contractual requirements.