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1. PROJECT OVERVIEW <br />This document is intended to provide engineering information necessary to support_ the <br />building permit application to the City of Everett for the proposed SFR and driveway <br />proposed Zn this lot:. The site is located at 5306 East Drive, Everett, WA 98203; refer to <br />Figure 1 for a vicinity map. This project will take access from the existing shared driveway <br />to the north that takes access from East Drive to the east. The parcel area is <br />approximately 0.14 acres. The existing site, in the area of disturbance consists of lawn. <br />The slope of the site, in the area of disturbance, is flat and averages less than 3 percent <br />down to the north/northwest, with steep slopes just off -site to the southwest. The new SFR <br />will .be located. approximately 12 feet.from .the eastern property line and 20 feet from the <br />northern property line. <br />This project proposes to construct more than 2,000. sf and less than 5,000 sf of new. and <br />replaced impervious surfaces. Therefore, Minimum Requirements 1-5 apply to all of the <br />new and replaced impervious surfaces for this project along with all the converted <br />vegetated areas. The proposedimpervious surfaces will either be infiltrated on -site or <br />tightlined to an existing storm system via a perforated stubout connection. Included on the <br />following page is a copy of the MR flow chartfrom the 2019 Department of Ecology <br />Stormwater-Management Manual for Western Washington (DOE SWMMWW). <br />Figures 2 & 3 are provided to show the existing and- developed basins and runoff <br />conditionsfor this site. The runoff. in the existing conditions sheet -flows gradually over <br />vegetated surfaces to the north/northwest toward the northwestern property lines. <br />Due to the size of this project, Minimum Requirements 1-5 apply to the proposed drainage <br />design as noted .above. The stormwater design has been laid out to meet the 2019 DOE <br />SWMMWW. <br />Moir SP Lot 6 20-0108 <br />February 2020 <br />.ReWsed.• 0dober2020 Page 3 <br />