Laserfiche WebLink
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 SFR addition proposed on this lot. <br /> The..site is located.at..2007..Cedar:St, Everett, WA 98201; refer to Figure 1 for a vicinity <br /> map. This project will take access from the existing roadway to the west (Cedar St). The <br /> parcel area is approximately 0.15 acres. The existing site, in the area of disturbance <br /> consists of lawn. The slope of the site in the area of disturbance is flat and averages <br /> approximately 4 percent down to the north and west. The new SFR addition will be located <br /> approximately 33 feet from the northern property line and 15 feet from the western <br /> property line. <br /> This project proposes to construct less than 2,000 sf of new and replaced impervious <br /> surfaces. Also, because the project site is located within the combined sewer area of the <br /> City and is proposing more than 200 sf of impervious surfaces, Minimum Requirement #7 <br /> (Flow Control) also applies. Therefore, Minimum Requirements 1-5 apply to all of the new <br /> and replaced impervious surfaces for this project along with all the converted vegetated <br /> areas. The drainage design has been laid out per the DOE 2019 Stormwater Management <br /> Manual for Western Washington (SWMMWW), as well as Chapter 4 of the City of <br /> Everett's current Design and Construction Standards and Specifications for Development <br /> (COE DCSSD) manual. This project proposes to construct approximately 1,864 sf of <br /> impervious surfaces on site. Stormwater management will be met using an engineered <br /> bioretention area. There will not be any pollution-generating impervious surfaces proposed <br /> for this project. Thus, runoff treatment is not required. <br /> Figures 2 & 3 are provided to show the existing and developed basins and runoff <br /> conditions for this site. The runoff in the existing conditions sheet flows gradually over <br /> vegetated surfaces to the northwest toward the northwestern property lines. <br /> Diedrich Addition 21-0224 <br /> Sept 2021 Page 3 <br />