7301 EVERGREEN WAY EVERETT CHEVROLET 2017-03-01

1.0 INTRODUCTION Encore Environmental Consortium (EEC) prepared this Cleanup Action Work Plan (Work Plan) on behalf of Argonaut Holdings, LLC (AHLLC), formerly known as Argonaut Holdings, Inc. (AHI), for the purpose of completing a remedial excavation and subsequent groundwater monitoring at the Everett Chevrolet facility located at 7300 Evergreen Way, Everett, Snohomish County, Washington(Site). A petroleum release impacting soil was recorded by the Washington Department of Ecology (Ecology) on June 7, 1995, based on the results of a Phase II Environmental Site Assessment (ESA) conducted at the Site in 1994. A Voluntary Cleanup Program (VCP) Agreement between AHI and Ecology for the Site was executed on October 2, 2008. A Remedial Investigation and Feasibility Study (RI/FS) report was prepared for the Site by EEC on behalf of AHLLC and dated January 24, 2012. The cleanup alternative selected in the RI/FS was Alternative 1 - Physical Containment with Long Term Monitoring. This alternative involved the execution of an environmental covenant and continued groundwater monitoring. One of the factors for selecting this alternative was that impacted soil remaining at the Site could not be removed without demolishing the existing buildings. At the time of the RI/FS, there were no plans to demolish the existing buildings; however, the current plan for future Site use has now changed and the existing buildings are planned to be demolished. Therefore, AHLLC plans to implement Alternative No. 2 - Excavation, as outlined in the RI/FS, as the cleanup alternative for the Site. This alternative will involve excavation and off-site disposal of impacted soil exceeding Model Toxics Control Act(MTCA) Method A cleanup levels in accordance with this Work Plan. The Work Plan presents the scope of work and procedures to implement Alternative No. 2. The activities detailed in this Work Plan support the requirements for a No Further Action (NFA) determination from the Ecology in accordance with Washington Administrative Code (WAC) 173-340 (MTCA). 017386-174(123) 1 THIS DOCUMENT IS PRINTED ON RECYCLED PAPER Encore Environmental Consortium,LLC