2611 ROCKEFELLER AVE 2024-03-27 - Laserfiche WebLink

the required setbacks. Downspout Dispersion is infeasible because the site cannot provide the required vegetated flow paths. Perforated stub out connections are also not feasible. The runoff from the roof will be tight lined to a detention system on the south side of the project to continue to City's combined sewer system. 1. The purpose of this SWPPP is to describe the proposed construction activities and all temporary and permanent erosion and sediment control (TESL) measures, pollution prevention measures, inspection/monitoring activities, and recordkeeping that will be implemented during the proposed construction project. The objectives of the SWPPP are to: 2. Implement Best Management Practices (BMPs) to prevent erosion and sedimentation, and to identify, reduce, eliminate or prevent stormwater contamination and water pollution from construction activity. 3. Prevent violations of surface water quality, ground water quality, or sediment management standards. 4. Prevent, during the construction phase, adverse water quality impacts including impacts on beneficial uses of the receiving water by controlling peak flow rates and volumes of stormwater runoff at the Permittee's outfalls and downstream of the outfalls. 5. This SWPPP was prepared using the Ecology SWPPP Template. This SWPPP was prepared based on the requirements set forth in the Construction Stormwater General Permit and in the Stormwater Management Manual for Western Washington (SWMMWW 2014). The 13 BMP Elements Element#1 —Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land- disturbing activities begin. Element#2—Establish Construction Access Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto Insight Engineering Co. - Stormwater Site Plan 12/30/20 - 15 -