The Tualatin Valley Water District (TVWD) and other Washington County municipalities are partnering to develop the mid-Willamette River at Wilsonville, OR as the next water supply source for their communities.
DEA provided stream restoration design and permitting to create a more naturally functioning system along Bear Creek in Redmond, Washington.
DEA provided engineering, environmental and surveying services for the development of a 38-lot single-family and 50-lot duplex residential subdivision in Oak Harbor, Washington.
DEA conducted a series of high resolution multibeam bathymetric surveys and Acoustic Doppler Current Profiling surveys in support of the Remedial Investigation/Feasibility Study to evaluate the transport of contaminated sediments in the Willamette River.
As part of an effort to modify the Lower Coos Bay Navigation Channel to accommodate larger deep draft vessels, the Port of Coos Bay contracted with DEA to lead the FS/EIS process, consisting of four phases: public scoping, detailed technical studies, draft FS/EIS development, and final FS/EIS development and approval.
DEA Inc.