PROJECT LOCATION: This Project is located along multiple blocks within the Longfellow Creak basin in the City of Seattle. The three distinct sites are located at: 1) 24th Ave SW from SW Barton Pl to SW Thistle St; 2) Sylvan Way SW and SW Orchard St intersection; and 3) SW Kenyon St and 24th Ave SW intersection. PROJECT DESCRIPTION: This main purpose of this project is to provide water quality treatment for street runoff that drains to Longfellow Creek by retrofitting the roadsides with bioretention treatment systems, and to provide pedestrian improvements at sites 1 and 3 described above. This Project consists of the following elements of Work: Construction stormwater erosion control; clearing & grubbing; demolition and removal of existing surface pavement, sidewalks, and curbs; removal and abandoning existing drainage structures and piping; protection, relocation, and/or adjustments of existing utilities, including water services; reconnection to the existing drainage system; installation of new surface drainage systems, including: storm drainage piping, drainage structures, and bioretention cells; pedestrian bridge and boardwalk construction, including pedestrian street lighting; and final site restoration, including: surface paving, sidewalks, curbs, driveway, and curb ramps, final planting, and landscaping.

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