David Evans and Associates Inc. (DEA) is a professional services consulting firm of engineers, surveyors, hydrographers, planners, landscape architects, oceanographers and natural resource scientists. Founded in 1976, DEA employs more than 700 professionals in offices located throughout seven states.

DEA’s Marine Services Division is headquartered in Vancouver, Washington, with satellite offices in Gulfport, Mississippi, Richmond, Virginia, and Charleston, South Carolina. DEA Marine Services is dedicated to marine data collection, processing and analysis. To date, DEA Marine Services has successfully completed surveys throughout the continental United States, in remote areas of Alaska and Hawaii, and at international project sites.

DEA Marine Services is a recognized leader in providing reliable and accurate marine survey data and analysis for public- and private-sector clients. DEA Marine Services has received letters of commendation and awards for outstanding service and technical ability from: US Army Corps of Engineers; National Oceanic and Atmospheric Administration; Secretary of the Army; Secretary of Defense; and the Washington Department of Transportation.

DEA Marine Services staff have designed and implemented cutting edge systems for efficient data acquisition in unique environments; developed data processing work flows to maximize efficiency and accuracy; and refined presentations that provide clients with clear and easy-to-understand integrated data.