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• • <br /> Proposed Site Information: <br /> 1. How will your project change the existing conditions? <br /> The project will demolish and remove the existing single family structure and replace it with <br /> a duplex structure.The finish grades and topography will remain the same as in the existing <br /> condition. <br /> 2. Please provide the following quantities of proposed hard surfaces in square feet: <br /> Proposed Roof Area: 2,960 square feet <br /> Proposed Other Hard Surfaces (pavement, gravel,etc.): 2,133 square feet <br /> 3. How will you manage rooftop runoff after the project is completed? <br /> The same as in existing condition. Rooftop runoff will drain to splash block and will be <br /> dispersed over the surrounding lawn. <br /> 4. How will you manage stormwater runoff from hard surfaces(driveways, paved pathways, <br /> etc.)? <br /> Rainwater falls onto the driveway sheet flow to shallow swale until reaching 7th Ave. <br /> curbcut. Then flows through the gutters until reaching a catch basin just south of the <br /> project site. <br /> [-Permanent Drainage Plan: <br /> You are required to"infiltrate, retain, and disperse stormwater"on your site to the maximum extent <br /> you can without causing erosion or flooding. <br /> See Volume III, Chapter 12 of the 2010 Stormwater Management Manual for stormwater facility <br /> requirements: https://everettwa.gov/DocumentCenter/Home/View/1214 <br /> Determine which options you must use for downspout disconnect by considering the following in order: <br /> • BMP 12.30 On-site Infiltration Areas <br /> • BMP 12.40 Raingardens <br /> • BMP 12.50 Downspout Dispersion <br /> Provide your Evaluation below and Show where these will take place on a site map: <br /> Considering the site characteristic both option 1 and 2 are not feasible due the following: <br /> The types of soils as identified above are Alderwood soils which requires an area of 250 square <br /> feet of bottom area per 1,000 square feet of equivalent impervious area in order to implement an <br /> on-site infiltration area or raingarden. <br /> The required setback requirements to structures and property lines is 10 feet. <br /> Due to the area required and setback it not feasible to fit on the site one of these facilities. <br /> Page 3 of <br /> CITY OF EVERETT I 3200 Cedar Street l Everett, WA 98201 1425-257-8810 everettwa.gov <br />