ADH Environmental is a California Corporation established in 1999. 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, as a Minority Business Enterprise (MBE) by the California Public Utilities Commission, and as a Small Business (SB) by the California Department of General Services. For 2008, ADH was recognized by DiversityBusiness.com, based upon total annual revenues, as one of the "Top 100 Disabled Owned Firms in the United States". ADH's corporate offices are located in Soquel, California. ADH's branch office is located in Arcata, California.

As an environmental consulting and management services corporation, ADH's staff is comprised of storm water quality management professionals, professionally certified engineers, professional geologists, engineering geologists, water resource managers, hydrogeologists, oceanographers, biologists, GIS, and database management personnel. ADH personnel have up to 30 years of experience in serving both the public and private sectors.

ADH's staff includes full- and part-time employees and reputable independent professional associates who have devoted their time and energies to the success of ADH. ADH is able to perform a broad spectrum of work ranging from small/routine projects to large/high profile projects requiring an elevated degree of business and technical sophistication.