812 35TH ST 2022-03-07 - Laserfiche WebLink

• Rucker Hill Short Plat Minimum Requirement # 1: Stormwater Site Plan Executive Summary The proposed project is located at 812 35t1i Street in Everett,Washington. More generally,the site is located in Section 30,Township 29 North, and Range 5 East of the • Willamette Meridian in Snohomish County,Washington. Please refer to the Vicinity Map attached in the next section. The approximate 0.705-acre site is partially developed with an existing single-family residence with detached garage, guest house, and associated driveways. The proposed • development consists of the subdivision of the property into 3 lots, while retaining the existing single-family residence on proposed Lot 3. All lots will be accessed directly from 35th Street. Drainage and utilities from the site will be taken from existing utilities within 35th Street. • New and replaced preliminary roof, driveway, and parking areas total approximately 10,000 sf.New curb and sidewalk areas along 35th Street will total approximately 600 sf. Due to site being located in a non-infiltration area of the city(due to proximity to landslide hazard area), along with existing and proposed slopes to exceed 15%, • developed roof and driveway runoff will be managed primarily by tight lining into new stormwater detention pipe with a controlled outlet discharging into a new sewer main line (project located in combined sewer/storm system area). Disturbed lawn areas are to be amended per BMP T5.13. Due to project being located in a combined sewer/storm area of • the city,project to be designed to the 2010 City of Everett Stormwater manual. Existing Conditions Summary The property is one tax parcel,which contains an existing single-family residence, • detached garage, guest house, and driveway. The property is accesses 35th Street, which lies to the north of the site. Vegetation on-site consists mainly of residential lawn with partial tree cover. The project property rests at a local high point and runoff exits the site toward all directions. On-site slopes are flat to steep,ranging from 3%to 1.5:2. From a Snohomish County Soil Survey done by USDA the soils on-site consists of Alderwood- Urban Land Complex type soils. According to soil logs taken by Liu&Associates, Inc., soils on-site resemble outwash medium sands. Refer to Appendix II for soil information. Adjacent parcels to the south,west, and east appear to be developed with existing SFRs and driveways. The 35th Street right-of-way lies to the north of the site. • WESTERN ENGINEERS,INC. 2 PROJECT:16-1584-A