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Stormwater Pollution Prevention Plan <br /> 2.0 Site Description <br /> 2.1 Existing Conditions <br /> The Everett Trailer Court consists of trailer hookups, paving, landscaping and two non-trailer <br /> structures. The site slopes from the edges of the site to the boarder with Big J's parcel. This is <br /> the natural low point of the site. Stormwater flows to an existing catch basin that discharges to <br /> the combined sewer. <br /> Big J's site consists of a gravel parking lot, stormwater infrastructure, and a detention pond. The <br /> site generally slopes from northwest to southeast into the detention pond and discharges to the <br /> combined sewer. <br /> Surficial soils generally consist of approximately 1 foot of medium dense fill consisting of sandy <br /> gravel overlying very dense glacial till composed of mostly gravelly sand per the geotechnical <br /> report prepared by Hart Crowser on March 4, 2015. Groundwater was not encountered during <br /> subsurface investigation, but perched groundwater may exist atop the very dense glacial till. <br /> There are no critical areas on site such as high erosion risk areas, wetlands, streams, or steep <br /> slopes (potential landslide area). <br /> 2.2 Proposed Construction Activities <br /> The Big J's and the adjacent trailer parking lot will be developed into one permanent asphalt <br /> parking lot. Construction activities will include site preparation, installation of temporary <br /> erosion and sediment control measures per the construction temporary erosion and sediment <br /> control plan(TESCP), demolition of site features and existing utilities, excavation for the <br /> basement and building foundations, poured concrete foundations, and building construction. The <br /> scheduling and phasing of BMPs during construction is provided in Section 4.0. <br /> Per the requirements of the City of Everett Public Works Policy No. 2-11, runoff from the <br /> proposed development must match runoff of the existing site conditions for sites discharging to <br /> the combined sewer system; therefore, since the proposed project will increase impervious area, <br /> a detention pond will be provided for permanent flow control. <br /> The following summarizes details regarding the project site areas: <br /> Total site area: 2.01 acres <br /> Percent impervious area before construction: 47 % <br /> 3 <br />