1329 MADRONA AVE 2022-04-01 - Laserfiche WebLink

P 11 7 H 1. PROJECT OVERVIEW This document is intended.to provide the engineering information necessary to support the building permit application for a new SFR and paved driveway in the City of Everett. The site .covers ..approximately 0.43 acres. The existing site is currently undeveloped and consists of lawn and pastured ground cover. The proposed disturbance area. will cover nearly the entire site (0.36 acres). The proposed SFR will be set approximately 8 feet from the western property line and 30 feet from the southeastern property line. Access to the new SFR will be from the proposed paved driveway which will take access from the existing roadway to the southeast (Madrona Ave). The parcel is currently undeveloped and is surrounded by developed parcels. The slope of the site in the area of the disturbance is steep and averages approximately 22 percent down to the northwest. Steep slopes are present to the northwest of the lot, the top of the steep slopes located near the northwestern property line, the boundary between the project property and the BNSF RJW. The toe of the slope is located off -site of the project site within the BNSF R/W. This development proposes to construct a new SFR and paved driveway. The total new plus replaced impervious surfaces equal 8,277 sf (0.19 acres). All runoff from the proposed developed hard surfaces on this site will be collected and conveyed to the toe of the bluff to the northwest via a HDPE tightline with diffuser tee. This discharge location will be on the south side of the BNSF railroad with Puget Sound located to the north. Therefore, the runoff will be discharged at a location where it will flow through the existing ditch system for the railroad and then through an existing culvert into Puget Sound which will have negligible impact on the downstream existing conditions, All drainage improvements have been designed to meet or exceed the 2014 DOE Stormwater Management Manual The project location is 13XX Madrona Ave, in the City of Everett, and in Section 36, Township 29N, Range 4E. See Figure 1 - Vicinity Map. Mazza SFR 19-1014 November 2019 'Revised. ApHI-2020 Page 3