Mapleview Street Green Streets Project

Mapleview Street Green Streets Project

The proposed Mapleview Street Green Streets Project would improve stormwater conveyance and water quality along Mapleview Street through implementation of structural stormwater best management practices. The project occurs along approximately 0.69 miles of Mapleview Street from Vine Street to Pino Drive located within the unincorporated community of Lakeside in San Diego County. Runoff from rain events, ground water infiltration, and irrigation activities flows into the County’s Municipal Separate Storm Sewer System with limited treatment before entering the San Diego River. The goal of the project is to improve water quality by treating wet weather flows along Mapleview Street to help meet indicator bacteria Total Maximum Daily Load targets in the San Diego River watershed. Proposed improvements include installation of approximately 460 linear feet of 5-foot wide sidewalks, 200 linear feet of a 3-foot wide cobble-lined swale, and 550 linear feet of 4-foot wide biofiltration basins along Mapleview Street between Vine Street and Ashwood Street. The existing unlined roadside ditch would be improved with an 8-foot wide dispersion area. Strom drain improvements would occur at the intersection of Ashwood Street and Mapleview Street and would continue east along the north side of Mapleview Street for approximately 450 feet. East of the storm drain improvements, 8-foot wide biofiltration basins would be constructed within the shoulder of the roadway. The sidewalk, curb, gutter, driveway, and road improvements would continue along Mapleview Street and terminate west of Pino Drive.

San Diego

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California San Diego River Conservancy (SDRC), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance, California Department of Transportation, District 11 (DOT)

California Department of Transportation, District 11 (DOT)

Other (Water Quality Best Management Practices & Sidewalks )

Biological Resources, Paleontological