This project consists of three project sites. Site 1 is located at 2617 W Phelps St. Work includes excavation site work to increase the storage volume of an existing flood control detention basin onto neighboring City-owned property and create pools for planting native plants. Work also includes installation of a grass paver maintenance path, installation of a concrete flow diversion structure, and modification of the existing concrete outlet structure will be modified. Sites 2 and 3 are located on the north and south sides of W College Rd where it intersects W Chestnut Expressway. These two sites include the installation of bioretention cells with underdrain systems. Site 2 includes grading, stormwater pipe replacement underneath W Mill St and installation of a pretreatment structure. Site 3 includes installation of a retaining wall and a concrete flow diversion structure. All three sites include installation of articulated concrete block mat.
