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6. ON-SITE STORMWATER MANAGEMENT <br /> List #2 in the SWMM volume 1 section 2.5.6 provides multiple BMP options for runoff <br /> management, conveyance BMPs and Discharge BMPs. Each option was reviewed for this <br /> project and the most suitable was selected. <br /> Standard Project Runoff Manage Options <br /> Lawn and Landscaped Areas: <br /> 1. Post-Construction Soil Quality and Depth: Required <br /> Roofs: <br /> 1. Full Dispersion: Not feasible due to steep on-site slopes. <br /> 2. Downspout Infiltration Systems: Not feasible due to steep on-site slopes. <br /> 3. Bioretention/Rain Gargens: Not feasible due to steep on-site slopes. <br /> 4. Downspout Dispersion: Not feasible due to dispersing water towards steep slopes. <br /> 5. Perforated Stub-Out Connections: Not feasible due the steep on-site slopes. <br /> 6. This project proposes to tightline the downspouts to an existing catch basin and <br /> stormdrain pipe located on the northern side of the property using HDPE pipe. <br /> Other Hard Surfaces: <br /> 1. Full Dispersion: Not feasible due to steep on-site slopes. <br /> 2. Permeable Pavement: Not feasible due to steep on-site slopes. <br /> 3. Bioretention/Rain Gardens: Not feasible due to steep on-site slopes. <br /> 4. Sheet Flow Dispersion: Not feasible due to steep on-site slopes. <br /> 5. Concentrated Flow Dispersion: Not feasible due to steep on-site slopes. <br /> 6. This project proposes to collect the driveway runoff using a catch basin and tightline <br /> it to the same existing catch basin and stormdrain pipe that roof water will be directed to. <br /> Kennedy SFR 17-1002 <br /> October 2017 Page 9 <br />