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HomeMy WebLinkAboutPN_Project_Narrative_210803_V1www.furrengineering.com Page 1 June 21, 2021 City of Renton Permitting Department 1055 S. Grady Way, Renton, WA 98057 Subject: Project Narrative – Aberdeen Ave. 2-Lot Short Plat The current Lot is a corner Lot located at 2732 Aberdeen Ave. and is 15,309.7sf with a single-family residence, a detached garage, and asphalt driveway. Zoning for this Lot is R-8. The site can be characterized as flat with vegetation typical of urban landscaping. A tree line along the south and west property lines will be protected. There are no critical areas near or adjacent to the site. The proposed project is to create a 2-Lot short plat and construct a new single-family residence on Lot B and retain the existing home on Lot A. The existing garage will be removed to accommodate the new ally entering from Aberdeen Ave NE. Lot B is the interior Lot located on NE28th St. and has an area of 7,547 SF, the driveway will take access off of the alley from Aberdeen Ave. NE and the pedestrian entrance will be from NE 28th St. Lot A is located at the corner of Aberdeen Ave NE and NE 28th St. with a Lot area of 7,762 SF, the driveway will take access off of the alley from Aberdeen Ave and the pedestrian entrance will be from Aberdeen Ave. New frontage improvements are proposed for both streets along with a half street grind and overlay of Aberdeen Ave NE and the corner of NE 28th St. and 13 ft of ROW will be dedicated to the city along NE 28th St. A new sewer main extension is proposed the length of Lot A continuing north connecting to the existing man hole at the intersection of Aberdeen Ave NE and NE 28th St. Also, a storm main extension is proposed from Lot A south to connect to an existing catch basin at the corner of Aberdeen Ave NE and NE 27th St. Three drywells are proposed, one in each front yard and one in the back yard of Lot B to capture roof run off. New water service will be provided to Lot B from NE 28th St. and Lot A from Aberdeen Ave. Considering the existing site is generally flat there will be a net 0 of any cut or fill proposed. Total estimated construction costs are expected to be $200,000. Site soils analysis was performed by Cobalt Geosciences, Stormwater Feasibility Evaluation, dated January 8, 2019. Soils at this site are characterized as Vashon Glacial Till and Vashon Recessional Outwash. Medium grained sands were encountered at shallow depths. Infiltration of surface water runoff is feasible based on these results. Sincerely, Dean A. Furr, P.E.