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TH SE CESPUBLI& HEAL <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer - c •. ;p. <br /> wG j F ORS <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 2091468-3420 <br /> CONTACT: KEVIN MEEKS AUG O ZOOS f <br /> PAT & KATHLEEN MEEKS <br /> 25355 HWY 99 <br /> r <br /> ACAMPO CA 95220 <br /> f <br /> RE: PACIFIC AUTO CENTER SITE CODE: 508378 ' <br /> 25355 HWY 99 } <br /> ACAMPO CA 95220 <br /> Three underground storage tanks (UST)'were removed at the Pacific Auto Center site <br /> (site) in 1978. Three monitoring wells were installed at the site in February and March , <br /> 1999. Initial analytical results of the groundwater samples collected from MW-2 were <br /> 41,000 micrograms per liter(µg/1) of Total Petroleum Hydrocarbons as gasoline (TPH-g), <br /> 280 µg/i, 1,700 µg11, 430 µg11, and 5,600 µg/1 of aromatic hydrocarbons as benzene, 1 <br /> toluene, ethyl-benzene, and xylenes (BT.EX collectively), respectively, and 47 µg/1 of r <br /> Tert-Butyl Alcohol (TBA). <br /> The last quarterly sampling event took place on September 13, 2000. Analytical results <br /> of MW-3 were 200 µg11 of TPH-g, 3.8 µg11, 3.5 µg11, <0.50 µg/l, and 14 µg/l of BTEX, <br /> respectively, and 19 µg/l of TBA as reported in the Third Quarterly Report dated <br /> November 15, 2000 prepared by Advanced GeoEnvironmental, Inc. (AGE). <br /> Concentrations in grab water samples collected from the domestic well in April and <br /> September 2000 were not detect of petroleum hydrocarbons. Construction details of the <br /> domestic well on site are unknown, but it is located about 34 feet north of the former <br /> UST location. The vertical and lateral extent of contamination in groundwater has not <br /> been determined at this site. <br /> In a meeting between you and Pat Meeks (potential buyers at the time) and PHS/EHD <br /> staff on November 8, 1999, we agreed to your request to retain the domestic well in <br /> service on the condition that both the domestic well and the monitoring wells would be <br /> sampled and analyzed on a quarterly basis and the quarterly reports submitted to <br /> PHS/EHD as required by Section 2652 (d) of the California Code of Regulations (CCR), <br /> Title 23, Division 3, Chapter 16. It was also stipulated that the domestic well would have r <br /> to be destroyed and a new one installed if future investigation and sampling should <br /> indicate the domestic well has been contaminated or that it might constitute a threat to the <br /> water quality of the local aquifer. i <br /> Summary of the meeting was documented in a letter dated December 1, 1999. <br /> x <br /> A Division of San Joaquin County Health Care Services III <br /> J <br />�� 7 <br />