1427 100TH ST SW 2025-03-03 - Laserfiche WebLink

HUITTZOLLARS HUITT-ZOLLARS,INC. • 1102 Broadway,Suite 301 . Tacoma,WA 98402 . 253.627.9131 phone • 253.627.4730 fax . huitt-zollars.com Core Requirement#1:Preparation of Drainage Control The project is subject to drainage review because it proposes to create more than 2,000 SF of hard surface.This Drainage Report and the associated plans as part of the Preliminary Drainage Review are intended to meet this requirement.The Stormwater Site Plans include grading requirements for the proper drainage of the areas proposed for development and depict the collection, conveyance, and management of stormwater. Refer to Figure 8 in Appendix A. Core Requirement#2:Construction Stormwater Pollution Prevention(SWPP) Temporary erosion and sediment control measures will be provided per the City of Everett Design and Construction Standards and Specifications for Development.The TESC plan will provide BMPs for all 13 Elements in the City of Everett Supplemental Checklist including construction entrance, silt fence, high visibility plastic fence, straw wattles, and inlet protection storm drain inlet trap.The Construction Stormwater Pollution Prevention Plan shall be implemented as part of the requirements of City of Everett. On-site fueling for construction vehicles/equipment is not planned. However, if such pollutant generating activities become necessary,the contractor will be required to implement all applicable BMPs. See a summary of 13 elements of the Stormwater Pollution Prevention Plan in Section 6 of this report. Refer to Figure 7 in Appendix A. Core Requirement#3:Source Control of Pollution The proposed site grading and construction activities are not expected to produce point source stormwater pollutants. Construction vehicles are not planned for on-site fueling. However, if such pollutant-generating activities become necessary, the contractor is required to comply with all applicable state regulations for the refueling of construction equipment on the site. There are no significant potential sources of stormwater pollutants from operation of the site (e.g., solid waste or landscape management). Zinc-or copper-containing roofing materials are not proposed as part of the project. Potential impacts during construction are addressed under Core Requirement#2. Core Requirement#4:Preservation of Natural Drainage Systems and Outfalls There are no natural drainage features or outfalls on the site.The natural drainage system has been altered by urban development.The existing condition is the best available approximation of natural drainage conditions. Stormwater from the project area currently drains to a public 24" City storm drain at the southwest corner of the site near 100th St SW.The City storm drain conveys runoff to Swamp Creek(Figure 6 in Appendix A). Core Requirement#5:On-site Stormwater Management The proposed project is a re-development of the 29.68 acre parcel in the city limits of Everett. The proposed stormwater management plan has selected to choose BMPs from List# 1 to comply with Core requirement#5 for the following land cover types: • Lawn and landscaping areas • Roofs: (note:there are no roof target surfaces associated with this project) • Other Hard Surfaces (e.g., pavement) Fairway Estates MHC Entry Huitt-Zollars Stormwater Drainage Report December 15,2023 Everett,Washington Page 2