600 54TH ST SW I 2025-01-28 - Laserfiche WebLink

SECTION I: PROJECT DESCRIPTION The proposed project Seahurst Lane is located at 600 54t St SW, Everett, WA. More generally, the site is located in Section 1, Township 28 North, and Range 4 East of the Willamette Meridian in the City of Everett, Washington. Please refer to the Vicinity Map attached later in the section. The site is currently undeveloped and covered with native vegetation. There is a wetland located to the east of the site, an associated buffer has been designated. The site contains one drainage basin that drains to the east to Pigeon Creek. Per NRCS survey of Snohomish County, the project site contains Alderwood Urban Land Complex 0 to 8 percent soils that have a hydrologic classification of Type "C" and Everett soil that have a hydrologic classification of Type "A". Please refer to the soils map and descriptions attached later in this report for more details. The site area of the project is approximately 5.00 Acres. The clearing area is 2.61 Acres. The proposal is to subdivide the property into ten lots and construct ten new single- family homes, approximately 533-1f of road with associated utilities. The access to the project site will be from 54th Street. A 108'x 29.50'x 14' wetvault located underneath the open space near the central portion of the site is proposed to meet the flow control requirements conforming to the City of Everett requirements. The wetvault will have a detention depth of 9.50-ft, 3.50-ft of wetpool depth and 1-ft of sediment storage. The wetvault was sized using Western Washington Hydrology Model V 4.2.13 (WWHM). The roof and the yard drains will be connected to the onsite detention system. The outflow from the wetvault will be discharged to the east via a closed pipe system to a stilling basin for energy dissipation and eventually drains to its natural drain course to Pigeon Creek. Runoff treatment would be obtained by wetvault. Insight Engineering Co. - Stormwater Site Plan 07/03/2019 -3-