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F4aTHILL <br /> • ENGINEERING <br /> 12793 PADDY CREEK LANE LODI. CA 96240 <br /> PM. (209) 368-9381 FAX(209) 367-1163 <br /> Harlin Knoll September 12, 2002 (rev. 9120/2002) <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Ave. Third Floor <br /> Stockton, CA 95202 <br /> S-ubject: Sun West Liquors,2419 W. Kettleman Lane,Lodi,CA LOP Site code: 503357 <br /> Global ID T0607700812 <br /> Dear Sir: <br /> Please find below the"Pump and Treat" work plan for Sunwest Liquors of Lodi, California. <br /> PUMP AND TREAT WORK PLAN <br /> History <br /> On 7/1011998 Thorpe Oil of Lodi, California removed the three gasoline USTs from the Sun West <br /> property. Soil samples from underneath the USTs and the dispenser piping indicated that some leaks had <br /> • occurred during the life of the gasoline sales operation. Foothill Engineering did a site investigation to <br /> determine the vertical and horizontal extent of the gasoline contamination on 8/13198 and 8/21198. <br /> Geomatrix installed the monitoring well GMX-1 at a location+/-25 feet south of the UST excavation and <br /> sampled first groundwater. That analysis is attached. Geornatrix also made three soil borings (GB#1, <br /> GB#2, and GB#3) with both soil samples and groundwater samples extracted (see attached map for <br /> location). All samples on GB#1,GB#2, and GB#3 were non-detect for all compounds analyzed. <br /> The work plan of 5/24/99 called for the installation of three soil borings to be located on the Sun West <br /> Liquor property and the possible installation of a fourth soil boring on the south side of Kettleman Lane. <br /> Soil samples were to be extracted at predetermined depths for laboratory analysis. A monitoring well <br /> to sample ground water was to be constructed in each of the soil borings. <br /> Groundwater sampling quarterly events have occurred from 7/12/99 to 06/11102. Laboratory data for all <br /> groundwater sampling analysis for each event is enclosed in a recap format(see attached recap). <br /> The source of the groundwater contamination and the resulting contaminated soil plume above it have <br /> never been located. 7__kr 60 ".*y 41 au rr , SU"i ? <br /> On January 28,2002,ACT Inc. performed a pump test on a 15" extraction well with a 6" PVC casing. <br /> The Pump Test Report is attached to this work plan and can be found in the Appendix. <br /> 1 <br />