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FOOTHILL <br /> ENGINEERING <br /> 12793 PADDY CREEK LANE LOI]I. CA 95240 <br /> PH. (209) 368-9381 FAX (249) 367-1163 <br /> Harlin Knoll January 21, 2002 EC@WE[ <br /> San Joaquin County Public Health Services <br /> Environmental Health Division JAN 3 1 2OO2 <br /> 304 E Weber Av. Third Floor ENVIRONMENT HEALTH <br /> Stockton, CA 95202 PERMIT/SERVICES <br /> Subject: Sun West Liquors, 2449 W. Kettleman Lane, Lodi, CA LOP Site code: 503357 <br /> Global ID T0607700812 <br /> Dear Sir: <br /> Please find below a report on the groundwater sampling of monitoring wells for Sunwest Liquors. <br /> GROUNDWATER MONITORING REPORT FOR THE FOURTH QUARTER <br /> 12/18/01 <br /> SUN WEST LIQUORS <br /> • History <br /> On 7/10/1998 Thorpe Oil ofLodi,California removed the three gasoline USTs from the Sun West property. <br /> Soil samples i-rom underneath the USTs and the dispenser piping indicated that some leaks had.occurred <br /> during the life of the gasoline sales operation.Foothill Engineering did a site investigation to determine the <br /> vertical and horizontal extent of the gasoline contamination on 8/13/1998 and 8/21/1998. <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. Geomatrix also made three soil borings(GB#1,GB#2, <br /> and GB#3)with both soil samples and groundwater samples extracted(see attached map for location).All <br /> samples on GB#1, GB#2, and GB#3 were non-detect for all compounds analyzed. <br /> The work plan of 5124199 called for the installation of three soil borings to be located on the Sun West: <br /> Liquor property and the possible installation of fourth soil boring on the south side ofKettleman Lane.Soil <br /> samples were to be extracted at predetermined depths for laboratory analysis. A monitoring well to sample <br /> ground water was to be constructed in each of the soil borings. <br /> Groundwater sampling quarterly events have occurred from 7/12/99 to 12/18!01. Laboratory data for all <br /> groundwater sampling analysis for each event is enclosed in a recap format(see attached recap).A copy of <br /> the complete Laboratory Certificate of Analysis is enclosed for only this sampling event. <br /> MONITORING WELL SAMPLE EVENT OF 12/18/41 i <br /> Sampling Procedure <br /> On December 18, .2001, Del-Tech Geotechnical Services,under the supervision of Foothill Engineering <br /> performed a quarterly sample event. Monitoring wells were vented and purged by normal methods per <br /> 1 <br />