Tualatin Valley Water District, Grabhorn 5 MG Reservoir Replacement
Keller was selected for this progressive design-build project. This tank is a 5 MG concrete reservoir, partially buried in a hillside and surrounded by residential homes. The project also features a valve house, water sampling and quality monitoring system, extensive yard piping, on-site stormwater facilities, extensive grading and landscaping, Tideflex mixing system, site security upgrades, and offsite transmission piping. Keller Associates provided design, permitting, and construction phase services.