DEA has a long history of providing hydrographic and land surveying services to the Walla Walla District, including several surveys on the Columbia, Snake, and Clearwater Rivers.
Following a landslide in Oso on March 22, 2014, DEA’s Marine Services Division assisted in emergency recovery and mapping operations in Landslide Lake and in the North Fork of Stillaguamish River.
Using the most efficient, accurate, safe and cost effective methods, DEA provided design level mapping of over one-and-half miles of Auburn Way North which is the main north-south boulevard through the City of Auburn.
DEA provided project management, land survey, environmental and land use permitting, master planning, utility coordination, preliminary engineering, and construction engineering services for segments 1, 4 & 7 of the Westside Trail, which connects the city of Tualatin with Portland’s Forest Park.
DEA’s survey team performed a control survey and collected 25 miles of data along SR89A from Sedona to Flagstaff using DEA’s mobile laser scanning system.