2927 ROCKEFELLER AVE 2019-08-08 - Laserfiche WebLink

PROJECT OVERVIEW This document is intended to provide the information necessary to support the demolition building permit application to the City of Everett for the demolition of two existing buildings. The site is located at 2925 and 2927 Rockefeller Ave, Everett, WA 98201 and consists of three parcels (00439168500300, 00439168500401 and 00439168500402). The total site area is approximately 0.14 acres. The existing site is 100% covered in impervious surfaces including two buildings and the remainder as parking area. The entire site will be disturbed as needed for the demolition of the buildings and restoration of the existing site. The adjacent parcel to the north (Tax Account Number: 00439168500100) and two adjacent parcels to the east (Tax Account Numbers: 00439168501600 and 00439068501100) will be used for a construction access and staging area only. SWPPP NARRATIVE This narrative is intended to support the TESC plan in order to implement a design that will; reduce, eliminate or prevent the discharge of stormwater pollutants, meet or exceed the water quality and sediment management standards for the City and State, and prevent adverse impacts to the receiving waters for this project. A. SITE GRADING/EROSION CONTROL RISK ASSESSMENT Area proposed to be cleared/worked: 6,018 sf= 0.14 ac Average slope for the site: 11% (Area of Disturbance Only) Erosion Hazard of Soil Low Critical Areas downslope No Site is upstream of an ESA Stream No Based on the above information and the fact that the area of the site to be disturbed is moderate and construction site runoff will pass through silt fencing or other perimeter filtration features prior to leaving the site, and that if site conditions warrant, additional BMP's can be implemented as corrective measures the Risk Category for this site is Low Risk. B. SWPPP MINIMUM ELEMENTS 1: Preserve Vegetation and Mark Clearing Limits The first step in the construction process is for the contractor to fence the limits of clearing/disturbance (BMP C103) prior to any other construction activity. The TESC plan locates the area of clearing/disturbance of the project site. The entire project site will be cleared or disturbed for this project and removal of the existing buildings. 2: Establish Construction Access The SWPPP calls for the proposed construction entrance (BMP C105) to be installed as the second step after the staking of clearing limits. The construction entrance for this Rockefeller Building Demolition 18-0115 January 2018