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Stormwater Site Plan January 9, 2018 <br /> Catholic Housing Services—Everett Safe Streets Supportive Housing <br /> IX. Summary and Conclusions <br /> The Washington State Department of Ecology Minimum Requirements (MR)as laid out in Volume I, <br /> Chapter 2 of the Stormwater Management Manual for Western Washington (SWMMWW)were used as <br /> guidelines for the design of the ESSSH Site, and have been met. The Stormwater Site Plans(MR 1)were <br /> prepared adhering to the requirements and guidelines presented in Volume I,Chapter 2 of the <br /> SWMMWW. The CSWPPP(MR 2)was prepared in accordance with Volume II of the SWMMWW. None <br /> of the activities listed in Chapter 2,Volume IV of the SWMMWW are expected to occur at the site,and <br /> thus,no source control (MR 3) BMPs discussed in Volume IV are proposed. Natural Drainage Systems <br /> and Outfalls (MR 4) have been preserved to the maximum extent practicable. The proposed site <br /> empties to the same combined and storm sewers as in the pre-developed condition,with runoff <br /> attenuation provided. On-site Stormwater Management(MR 5) is provided through soil amendments, <br /> tight-lines,drains,and underground detention as outlined in Volume III, Chapter 3. Basic treatment is <br /> required for the Runoff Treatment(MR 6),and is met by installation of a bio-retention cell. Flow Control <br /> requirements(MR 7)are met using the standard flow control outlet structure as shown in Standard <br /> Detail 415(COE). As there are no Wetlands(MR 8)within a quarter mile of the proposed site, no <br /> wetland protection is provided. An 0& M plan (MR 9) is provided in Appendix F of this report, and is <br /> consistent with the provisions of the SWMMWW. <br /> 91 Page <br />