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• <br /> FMcLcjren sm <br /> art <br /> ENVIRONMENTAL ENGINEERING CORPORATION <br /> December 8, 1992 <br /> Mr. Harlin Knoll <br /> Environmental Health Division <br /> San Joaquin County Public Health Services <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> Dear Mr. Knoll: <br /> WORK PLAN: FORMER DEL MONTE FACILITY, 1033 EAST SCOTTS AVENUE, <br /> STOCKTON, CALIFORNIA <br /> This letter presents a proposed work plan for collecting soil samples from material <br /> underlying the former Del Monte facility located at 1033 East Scotts Avenue, <br /> Stockton, California. <br /> The purpose of field activities associated with the work plan is to collect soil from <br /> areas of known petroleum hydrocarbon contamination for analysis to determine <br /> specific fuel type and relative age. <br /> McLaren/Hart proposes to collect soil samples from the three locations shown on <br /> the attached map. Samples will be collected from boreholes advanced with a Mobile <br /> B-61 Hollow Stem Auger drill rig. Soil will be collected with a California modified <br /> split-spoon sampler, lined with three, 2-inch diameter brass sample tubes. The split- <br /> spoon sampler will be driven ahead of the lead auger into relatively undisturbed soil <br /> approximately 18 to 22 inches with a standard 140-pound drop hammer. <br /> Each borehole will be drilled to an approximate total depth of 55 feet below ground <br /> surface. Samples will be collected at a minimum of 5-foot intervals. Soil collected <br /> from the 25 to 30 foot depth intervals in each borehole will be analyzed by EPA <br /> Methods 418.1, 8015 Modified, and 8240. Samples collected from the 35 to 55 foot <br /> intervals will be analyzed for moisture content, bulk density, hydraulic conductivity, <br /> effective porosity, intrinsic permeability, and total organic carbon content. <br /> All environmental soil samples contained in the brass sample tubes will be removed <br /> from split-spoon sampler and fitted with plastic end caps attached with teflon tape. <br /> Each brass tube will then be placed in a sealable plastic bag and stored in a <br /> thermally insulated chest at approximately 4°C for shipment to Friedman and Bruya <br /> 11101 White Rock Road,Rancho Cordova,CA 95670(916)638-3696 FAX(916)638-2842 <br /> 0 recycbd ate, <br />