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SECTION IV: CONSTRUCTION STORMWATER POLLUTION <br /> PREVENTION PLAN <br /> This Stormwater Pollution Prevention Plan (SWPPP) has been prepared as part of <br /> the Construction stormwater permit requirements for the project The Landing at Port <br /> Gardner located at 3632 Rucker Ave, Everett WA 98201. More generally the projects <br /> located in More generally, the sites located in Section 30, Township 29 North, and Range 5 <br /> East of the Willamette Meridian in the City of Everett, Washington. The site is currently <br /> undeveloped with low growing vegetation. There are no critical areas located within the <br /> site. The site slopes moderately to the west of the site. Per NRCS survey of Snohomish <br /> County, the project site contains Alderwood Urban Land Complex 2 to 8 percent soils that <br /> have a hydrologic classification of Type "C". The site area is 0.62 Acres. The proposal is to <br /> construct a three-story apartment building with an underground parking garage. The total <br /> proposed impervious surfaces will be 18,610 SF. The access to the parking garage will be <br /> from Grand Ave. <br /> Minimum requirements 1-9 apply to the project, refer to the Flowchart for <br /> Determining Requirements for Redevelopment attached in the next page. Onsite <br /> stormwater management (MR#5) and flow control (MR#7) for the roof and driveway area <br /> will be provided by a Storm tank system located beneath the proposed building. The Storm <br /> tank system will have ST-36 tanks for a total depth of 3-feet and a 1 ft stone storage around <br /> the storm tank. Storm tank will provide a total volume of 7,880 CF. The outlet from the <br /> stormtank will be connected to the combined sewer system that drains to the west. Water <br /> quality is exempt per volume 1 section 2.2.6 of the City of Everett Stormwater <br /> Management Manual because the PGIS is less than the threshold area of 5,000 SF and also <br /> per Public Work Policy#2-11 as it falls in the combined sewer area. <br /> 1. The purpose of this SWPPP is to describe the proposed construction <br /> activities and all temporary and permanent erosion and sediment <br /> control (TESC) measures, pollution prevention measures, <br /> inspection/monitoring activities, and recordkeeping that will be <br /> Insight Engineering Co. -Stormwater Site Plan 09/10/18 <br /> - 13 - <br />