Client: King County/Murray Franklin
Location: Redmond; Redmond Ridge East
This 45-acre recreation complex siteincludes two regulation soccer fields, a dog park, pedestrian trails, and associated commercial access drives and parking for public use. CPH was responsible for site planning, engineering design, subconsultant coordination, construction documents and permitting efforts. Stormwater controls for this public park were accomplished using bio-filtration facilities for treatment and infiltration for discharge. The infiltration facility was a large, open pond with a storage capacity of 26 acre-feet. A secondary storage cell of 12 acre-ft was incorporated into the adjacent recreation area. CPH worked with the owner and geotechnical subconsultant to design an infiltration pond in high ground water conditions to maintain natural recharge of a local aquifer and surrounding wetlands. Grading and storm drainage design required close coordination with Puget Sound Energy and Bonneville Power Association to accommodate clearance and safety standards for portions of the improvements located under high voltage transmission lines bisecting the site.