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• �" EOMUNO G. BROWN JR. <br /> i GOVERNOR <br /> C w L 1 f O R N I MArrHEw <br /> ETARY FORDRIOUE2 <br /> C <br /> WaterBoards ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> TO: File: Moore Truck Lines <br /> 3400 Newton Road <br /> Stockton, San Joaquin County <br /> FROM: Jim Barton= <br /> Engineering Geologist <br /> UST Unit 2 <br /> UST Cleanup Section <br /> DATE: 25 May2012 <br /> SUBJECT: UST CASE CLOSURE, MOORE TRUCK LINES, 3400 NEWTON ROAD, <br /> STOCKTON, SAN JOAQUIN COUNTY(CASE#391047). <br /> Site Background <br /> The former Moore Truck Lines site (Site) was a short haul trucking company and repair <br /> facility with an office, loading dock, and distribution center located at 3400 Newton Road <br /> in Stockton, San Joaquin County (Figure 1). Another truck company was leasing the <br /> property during public participation in October 2011. On 13 January 1999, one <br /> 12,000-gallon gasoline, two 5,000-gallon gasoline, and one 500-gallon waste oil <br /> underground storage tanks (USTs) and associated piping and dispensers were <br /> removed (Figure 2). Approximately 100 tons of over-excavated soil was transported to <br /> Forward Landfill in Manteca. Confirmation soil sample results taken from 8' below <br /> ground surface (bgs) to 14' bgs confirmed that an unauthorized release of petroleum <br /> hydrocarbons had occurred. <br /> In June 1999, five soil borings (131 through B5) were advanced to 64' bgs and one <br /> monitoring well (B1/MW-1) was installed in the fuel USTs pit. Three additional <br /> monitoring wells (MW-2 through MW-4) were installed in September 2001. One cone <br /> penetrometer testing boring (CPT-1) was advanced to 103' bgs in April 2004. CPT-1 <br /> soil samples were collected at 63' bgs and 95' bgs; grab groundwater samples were <br /> taken at 67' bgs, 85' bgs, and 103' bgs. All CPT soil and groundwater results were <br /> non-detect for petroleum hydrocarbons. Four additional monitoring wells (MW-5 <br /> through MW-8) were installed in June 2008. Maximum results of soil investigations, <br /> reported in milligrams per kilogram (mg/kg), are summarized in the table below. <br /> KARL E. LONGLEV ScD, P.E., CHAIR PAMELA C. CREEDON P.E., BCEE, EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200.Rancho Cordova,CA 95670 1 WWW.waterboarcis.ca.gov/centralvalley <br /> C',RECYCLED PAPER <br />