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• <br /> ERM-West,Inc. <br /> 2525 Natomas Park Drive <br /> Suite 350 <br /> Sacramento,CA 95833 <br /> 18 March 2011 (916)924-9378 <br /> (916)920-9378(fax) <br /> Via Electronic Mail <br /> Ms. Amy Terrell,Water Resources Control Engineer <br /> Regional Water Quality Control Board <br /> Central Valley Region ERM <br /> 11020 Sun Center Drive,Suite 200 <br /> Racnho Cordova,CA 95670-6114 <br /> Subject: Data Gap Soil Investigation Workplan <br /> John Deere Landscapes/Former LESCO Facility <br /> Stockton,California <br /> Dear Ms. Terrell: <br /> On behalf of Deere &Company (Deere), ERM-West, Inc. (ERM) submits <br /> this Data Gap Soil Investigation Workplan (Workplan) to describe proposed <br /> soil and groundwater investigation activities at the John Deere <br /> Landscapes/Former LESCO Facility (site) in Stockton, California. The <br /> following sections present a brief background for the site and describe <br /> the proposed investigation activities,including sampling rationale, <br /> reporting,and a schedule for completion. <br /> BACKGROUND <br /> The site is located within one-half mile of the Stockton Deep Water <br /> Channel in the Port of Stockton in Stockton,San Joaquin County, <br /> California(Figure 1). Field activities conducted from 2005 to present <br /> include the collection of 3 surface soil samples, soil sample collection <br /> from 26 soil borings,and the installation and sampling of 4 monitoring <br /> wells at the site. Additionally,falling and rising head slug tests and a <br /> tidal effect investigation were performed. Previous investigations and <br /> the analytical results for soil and groundwater samples were presented in <br /> the Comprehensive Site Summary Report(ERM,November 2010). <br /> The Dry Bulk Storage Warehouse/Former Mixing Area (Former Mixing <br /> Area)building and the Former Liquid Tank Farm concrete pad (Figure 2) <br /> were recently demolished and removed from the site. <br />