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San Joaquin County Mosquito Abatement and Vector Control District <br /> 200 North Beckman Road, Lodi CA <br /> Site Code: 1849 <br /> The site is currently used by the San Joaquin County Mosquito Abatement and Vector <br /> Control District. The San Joaquin County Assessor's Number for the parcel is 049- <br /> 050-31 . There are no facility wells on site and the nearest reported well is located <br /> 1 ,560 feet south-southwest of the site and is operated by the City of Lodi as a <br /> drinking water supply well, screened from 150 to 395 feet below ground surface (bgs). <br /> Three underground storage tanks were removed in 1986 and replaced with three <br /> underground storage tanks. Contamination was evidenced at the time of tank removal <br /> which was characterized and removed to the extent practical by excavation to 31 feet <br /> bgs. Groundwater monitoring wells were installed and no groundwater contamination <br /> was detected. The remaining contamination from the excavation attempt was <br /> characterized and determined to not pose a future threat to groundwater quality. <br /> PHS/EHD recommends the site be closed. <br /> 1986 <br /> 8/5/86 Removal plans for Tank #1 and #2 were approved. <br /> 8/13/86 Tank #1 (1 ,000 gallon gasoline) and Tank #2 (6,500 gallon weed <br /> oil/larvicide) were removed and soil samples were collected from beneath <br /> the tanks. See attached Table 2 for soil results. <br /> 8/28/86 Soil borings were drilled in the area of the former weed oil tank #2 <br /> (SJMB1 /A) and the former gasoline tank #1 (SJMB2/A). See attached <br /> boring logs and Table 2 for soil results. <br /> 9/12/86 Six soil borings were drilled (B-1 - B-6). Samples were not submitted for <br /> analysis from B-5 and B-6. See attached boring logs and Table 2 soil <br /> analytical results. <br /> 11 /6/86 Two underground storage tanks were installed. Began operation in <br /> 1987. Tank #4 (6,000 gallon weed oil) and Tank #5 (1 ,000 gallon <br /> unleaded gasoline). <br /> 11 /21 /86 Removal plan for Tank #3 was approved. <br /> 12/10/86 Tank #3 (7,000 gallon larvicide) was removed this date and two soil <br /> samples were collected from beneath the tank. See attached Table 2 soil <br /> analytical results. <br /> 12/17/86 Three monitoring wells were installed (MW1 - MW3). See attached boring <br /> logs and component from the Weiss 1987 report that included results <br /> from the soil sample collected from MW2 @ 41 .3 feet bgs. <br /> 12/31 /86 One underground storage tank was installed. Began operation in 1987. <br /> Tank #6 (7,500 gallon larvicide). <br />