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. <br /> SECTION III: SITE DEVELOPMENT PLAN W/ON-SITE <br /> STORMWATER MANAGEMENT <br /> The site area is 0.62 Acres. The proposal is to construct a three-story apartment <br /> building with an underground parking garage. The total proposed impervious surfaces will <br /> be 18,610 SF. The access to the parking garage will be 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 /> Insight Engineering Co. - Stormwater Site Plan 09/10/18 <br /> - 12- <br />