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5. This SWPPP was prepared using the Ecology SWPPP Template. <br />This SWPPP was prepared based on the requirements set forth in the <br />Construction Stormwater General Permit and in the Stormwater <br />Management Manual for Western Washington (SWMMWW 2019). <br />The 13 BMP Elements <br />Element #1— Mark Clearing Limits <br />To protect adjacent properties and to reduce the area of soil exposed to <br />construction, the limits of construction will be clearly marked before land - <br />disturbing activities begin. <br />Element #2 — Establish Construction Access <br />Construction access or activities occurring on unpaved areas shall be minimized, <br />yet where necessary, access points shall be stabilized to minimize the tracking of <br />sediment onto public roads, and wheel washing, street sweeping, and street cleaning <br />shall be employed to prevent sediment from entering state waters. <br />Install the temporary construction entrance, according to the approved construction <br />plans, prior to any clearing or grading activities. Maintain until the access road is <br />paved. <br />Element #3 — Control Flow Rates <br />In order to protect the properties and waterways downstream of the project site, <br />stormwater discharges from the site will be controlled. In general, discharge rates of <br />stormwater from the site will be controlled where increases in impervious area or <br />soil compaction during construction could lead to downstream erosion, or where <br />necessary to meet local agency stormwater discharge requirements. <br />Element #4 — Install Sediment Controls <br />Install silt fencing, according to the approved plans, prior to any clearing or grading <br />activities. Maintain until all construction activities are completed. <br />Install catch basin filters, according to the approved construction plans, as catch basins <br />become operable. Maintain until all construction activities are completed. <br />Element #5 — Stabilize Soils <br />Exposed and un-worked soils shall be stabilized with the application of effective BMPs to <br />prevent erosion throughout the life of the project. <br />Apply temporary hydro -seed to exposed and un-worked soils, according to the approved <br />construction plans, as needed to prevent erosion during site grading. Apply permanent <br />hydro -seed to areas at final grade as site grading is completed. <br />Apply mulching to exposed and un-worked soils, according to the approved construction <br />plans, as needed to prevent erosion during site grading. Maintain until site grading is <br />completed and permanent hydro -seed is applied. <br />Insight Engineering Co. — Stormwater Site Plan 05/31/2022 <br />- 15 - <br />