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MINIMUM REQUIREMENT #3: POLLUTION SOURCE <br />CONTROL <br />Pollution Source Control BMPs will be implemented during construction to prevent pollution. <br />Proposed BMPs will be based on the requirements of the Stormwater Manual and will include <br />but are not limited to the following: <br />BMP C101, Preserving Natural Vegetation <br />BMP C233, Silt Fence <br />MINIMUM REQUIREMENT #4: PRESERVATION OF NATURAL <br />DRAINAGE <br />The project site is currently lawn that slopes north to an existing bioswale. Roof drainage from <br />the proposed portables will be infiltrated. The existing bioswale will not be disturbed. <br />MINIMUM REQUIREMENT #5: ON -SITE STORMWATER <br />MANAGEMENT <br />This project is a redevelopment project that adds 2,211 square feet of hard surfaces. <br />This project will comply with the LID performance standard by infiltrating stormwater. <br />Calculations demonstrating compliance with the LID performance standard are included in <br />Appendix B. <br />sah\21\17\020\reports\silver lake elem storm site plan report\stormwater site plan report.docx\jdj <br />Stormwater Site Plan, Including SWPPP 7 • , , - <br />Silver Lake Elementary School Portables <br />