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Lake Shannon Floating Surface Collector

Lake Shannon Floating Surface Collector

DEA provided topographic and quantity surveys during shoreline rock excavation and overburden removal for installation of a Floating Surface Collector on Lake Shannon, WA. We also provided topographic surveys, construction staking, and as built surveys.

King County Housing Authority

King County Housing Authority

Since 2012, DEA has been providing civil engineering and surveying services to King County Housing Authority communities.

Good Samaritan Hospital

Good Samaritan Hospital

Supporting Skanska and the design team, DEA surveyors provided continuous mapping of existing site conditions for Good Samaritan Hospital’s new Patient Care Tower, Central Utility Plant (CUP) and parking garage.

City of Redmond Vertical Control

City of Redmond Vertical Control

DEA updated the City of Redmond’s vertical control network, originally established in 1989. The primary purposes of this survey were to change the vertical datum from NGVD 29 to NAVD 88, to set new benchmarks, and to replace damaged or destroyed benchmarks.

4-0 Ranch Boundary Survey

4-0 Ranch Boundary Survey

DEA performed a boundary survey for approximately 2.8 miles of the 4-0 Ranch which had been recently acquired by Washington Department of Fish and Wildlife.