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1 <br />11 <br />n <br />[7 <br />Mulch (BMP C121) will also be used on the exposed soil as necessary to limit erosion. In <br />addition, streets shall be cleaned as needed at the end of each work day or throughout the <br />day if dirt and debris is tracked onto the paved surfaces. <br />5: Stabilize Soils <br />The "Construction Sequence" calls for the stabilization of soils that remain unworked for <br />certain lengths of time based on the time of year. Bare/disturbed soils shall remain <br />uncovered or un-stabilized for no more than 2 days from Oct. 1 — April 30 and no more than <br />7 days from May 1 — Sept. 30. Stabilization techniques may include but not limited to <br />mulching (BMP C121), plastic sheeting (BMP C123) or hydroseeding (BMP C120), notes <br />have been added to the plan regarding protection for the stock pile area if necessary. A <br />stockpile area has been identified on the SWPPP and is setback a minimum of 25-feet from <br />any down slope property line. In addition, during dry periods soil should be covered or <br />wetted (BMP C140) to reduce the production of dust. <br />6: Protect Slopes <br />All disturbed slopes on site during construction are required to be, protected with mulch (BMP <br />C121) or other means as specified in the construction sequence like surface roughening <br />(BMP C130). No concentrated runoff or significant amounts of sheet flow will be directed to <br />new cut or fill slopes during construction (BMP C206). <br />7: Protect Drain Inlets <br />Catch basin and yard drain inlets will have inlet protection such as silt socks or an approved <br />equivalent. <br />8: Stabilize Channels and Outlets <br />No new channels or outlets are proposed for this site. <br />9: Control Pollutants <br />No outside chemicals are expected to be necessary for the construction of this project. <br />Concrete truck chutes, pumps, internals and hand tools shall be washed out only into formed <br />areas awaiting installation of concrete or asphalt. Unused concrete remaining in the truck <br />and pump shall be returned to the originating batch plant for recycling. When no formed <br />areas are available, washwater and leftover product shall be contained in a lined container <br />and disposed of in a manner that does not violate water quality standards. All vehicles <br />working on and around the site would need to meet the State requirements for emissions. <br />A drip pan or other appropriate temporary containment device shall be placed at locations <br />where leaks or spills may occur during the fueling or maintenance of machinery. <br />10: Control DeWatering <br />DeWatering is not expected for this project. However, the existing vegetation retained on <br />site would be available to spread any water from construction for filtration and disposal. <br />Mazza SFR 19-1014 <br />November 2019 <br />"Revised: Apri/'2020 Page 7 <br />