3600 SMITH AVE 2025-08-19 - Laserfiche WebLink

2.0 SITE DESCRIPTION 2.1 Existing Conditions This report presents the cleanup action plan (CAP)for the former Smith Street Sawmill Property (Site) located at 3600 Smith Avenue in Everett,Washington.As discussed in the RI Report(GeoEngineers 2018),discrete localized areas of soil at the Site are contaminated with petroleum hydrocarbon constituents(i.e., carcinogenic polycyclic aromatic hydrocarbons [cPAHs])at concentrations that exceed the MTCA Method A cleanup level for unrestricted land use.As explained in this CAP,the Site meets Washington State Department of Ecology's(Ecology)eligibility criteria for use of a model remedy for Petroleum Contaminated Soils.As explained in Ecology's publication "Model Remedies for Sites with Petroleum Contaminated Soils" revised December 2017, Ecology developed standardized cleanup methods called "model remedies"to help streamline and accelerate the pace of cleanups. Seven model remedies were developed for petroleum-contaminated soil. The model remedy appropriate for the Site ("Model Remedy 3") is presented in this CAP.A separate Feasibility Study(FS) is not needed for Sites eligible for the Model Remedy. 2.2 Proposed Construction Activities The Property(Snohomish County Tax Parcel Numbers:00-5760-019-000-05,00-5760-019-000-06,00- 5760-043-000-02,00-5760-012-000-03, 29-0529-003-008-00, 29-0529-002-012-00, 29-0529-003-030-00 and 29-0529-003-010-00) is owned by the City of Everett(City) and will be redeveloped by the City in the near future for transit vehicle parking. Construction activities will include erosion control measures, excavation,fill and compaction. The scheduling and phasing of BMPS during construction is provided in Section 4.0. This project has been designed in accordance with the City of Everett's stormwater standards. The City of Everett has adopted the most recent Washington State Department of Ecology Stormwater Management Manual for Western Washington. The most recent Ecology manual is 2012 stormwater Management Manual for Western Washington, as Amended in December 2014(2014 SWMMWW). The details regarding project site areas are 2500 CY of contaminated soil will be removed to an approved disposal site and replaced and compacted with certified clean soil to original grade. To 5