2307 COLUMBIA AVE 2021-05-04 - Laserfiche WebLink

Everett Municipal Code 14.28 and December 2014 DOE SWMMWW 2.5.1 Minimum Requirement#1: Preparation of Stormwater Site Plans 3.1.1 Site Analysis: Volume 1, Section 3.1 Boundary Survey & Topography Map • A survey is to be obtained by the project proponent. Vegetation and Utility Infrastructure • The site is vacant as the previous house that inhabited the site has been demolished. The site has been restored to dirt. Soils Report • A soils report has not been obtained by the project proponent as this application is not required to acquire one due to it's exemption from meeting the LID performance standard per section 1-2.5.5 of the 2014 DOE SWMMWW. Site Analysis and Summary of Existing Conditions • The site previously contained a single-family residential structure that has been demolished. The current condition of the property is inclusive of only dirt. The site appears to be generally flat.No wetlands, or other critical areas exist on site or appear to be within the site's immediate drainage vicinity. 3.1.2 Preliminary Development Layout: Vol 1, Section 3.1.2 A development layout has been prepared that shows the proposed locations of residential structures, driving surfaces, and drainage facilities. 3.1.3 Off-Site Upstream and Downstream Analysis: Vol 1, Section 3.1.3 Upstream Analysis: Areas upstream of the site appear to convey runoff into a storm drain system. It is not anticipated that upstream areas will be negatively impacted by the development of this site as they are heavily developed with conveyance systems that appear to bypass this site. Downstream Analysis: Task 1 —Define and map the study area A Drainage Inventory map has been included in Appendix A of this report showing the combined sewer and stormwater system in Columbia Ave. Task 2—Review all available information on the study area This project is not within the immediate vicinity of a critical area or floodplain. It appears that the existing stormwater system within Columbia Ave eventually discharges to the Snohomish river. The surrounding area consists primarily of residential development.