7805 40TH AVE W 2022-05-12 - Laserfiche WebLink

SECTION I: PROJECT DESCRIPTION The proposed project Georgiu Commercial is located 7805 40th Ave W, Evergreen Way, Mukilteo,WA-98275. More generally, the site is located in Section 10, 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 developed with one commercial building with a detached shed, parking area and an asphalt driveway from 40th Ave W. There is a critical area located within the site. The site contains an Ns stream(Japanese Gulch) and steep slopes of over 25% associated with it. The site contains one drainage basin that slopes towards the northeast. Upstream flows from the south of the site is draining into the property. 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". Please refer to the soils map and descriptions attached later in this report for more details. The clearing area is 0.43 Acres. The proposal is to construct an industrial building to the south of the site and a large parking area associated to it. The existing building and parking spaces present to the north of the property will remain. The access to the site will be from 40th Ave W. Frontage Improvements are also proposed long 78th St SW and 40th Ave W. A Stormtech system SC-740 of capacity 5,504 CF will be located underneath the parking area near the northeast portion of the site is proposed to meet the flow control requirements conforming to the City of Everett requirements. The Stormtech system was sized using Western Washington Hydrology Model V 4.2.14 (WWHM). The roof and the yard drains will be connected to the onsite detention system. The outflow from the detention pipe will be discharged to the east. Runoff treatment would be obtained by an underground Biopod Biofilter manufactured by Oldcastle Infrastructure located downstream of detention to provide enhanced water quality treatment for the commercial project. Insight Engineering Co. -Stormwater Site Plan 11/27/18 -3-