The county of Ventura has proposed a project to retrofit existing sidewalks, parkways and roadway medians with subsurface stormwater filtration systems to treat surface water runoff and improve surface water quality in downstream receiving waters of Medea Creek. The project includes removing existing sidewalk, parkway and roadway median hardscapes and developed landscaping, and replacing this infrastructure with modular wetlands within the existing developed roadway ROW. No trees will be removed as a result of this project. The project will filter stormwater runoff before discharge into Medea Creek to improve water quality of the creek by removing bacteria, nitrogen, metals, and other urban pollutants typically present in the runoff from the existing urban impervious surface areas. All proposed work would occur within the existing developed roadway ROW.
The proposed project involves minor alteration of existing sidewalks, roadway medians, curbs and gutters within the existing public roadway ROW in Kanan Rd, Twin Springs Ave, Smoke Tree Ave, Oak Point Dr, Oak Springs Dr, and Doubletree Rd, in the urban community of Oak Park (existing facilities, 15301). The proposed project is also categorically exempt under class 3 (new construction or conversion of small structures) since it involves installation of new small facilities (i.e., subsurface treatment vaults) and under class 4 (minor alterations to land) since it involves minor excavation and backfilling where the surface would be restored. The reconstruction and installation of new small facilities will occur in the same location as the existing sidewalks, roadway medians, developed turf grass parkways and sidewalk landscape area. No trees would be removed as a part of the project. Proposed work would not expand current use or capacity of roadway drainage system. Categorical exemption exceptions do not apply.