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PUBLIC HEALTH SERVICES °A4aco <br /> SAN JOAQUIN COUNTY ' <br /> ENVIRONMENTAL HEALTH DMSION <br /> Karen Furst, M.D., M.P.H., Health Officer F <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 C(a 'A 76' <br /> 2091468-3420 <br /> TIM &TINA RHODE Z jt4) 2 98 <br /> 1148 S MAIN STREET <br /> MANTECA CA 95337 <br /> RE: Domestic Well at 14852 S. Hwy 99, Manteca <br /> San Joaquin County Public Health Services, Environmental Health Division(PHSIEHD) has <br /> determined that the site investigation and remedial action of soil and groundwater contamination <br /> resulting from a release of gasoline from the former underground storage tanks at 14800 S. Highway <br /> 99, Manteca, has been completed. PHSIEHD will request concurrence from the Central Valley <br /> Regional Water Quality Control Board on this decision. <br /> in a letter dated, February 16, 1998, APEX Environtech, Inc. informed you that your domestic well at <br /> the above referenced address, was sampled on May 29, 1997, and the lab reported 62 parts per billion <br /> (ppb)of total petroleum hydrocarbons as gasoline(TPH-g) in the sample. PHSIEHD has enclosed the <br /> lab data sheets for the water sample collected from your well on that date. Please note that 1,2- <br /> Dichioroethane(EDC)was detected at 2 ppb, MTBE at 10 ppb, and Xylene at 2.7 ppb as well as TPH- <br /> g. Water samples collected from your well in August and November 1997 did not indicate any of these <br /> contaminants. <br /> EDC is still being detected in the monitoring wells at 14800 S. Highway 99. EDC is more resistant to <br /> clean up and further efforts to remove it from the water would not be cost effective. The water supply <br /> well at the gas station had EDC detected in several of the water samples collected from it so it has <br /> been replaced with a deeper screened and grouted well. <br /> Since the construction of the well on your property is not known, PHSIEHD is concerned that <br /> eventually your well may be impacted and it will not be evidenced because your well will no longer be <br /> sampled. <br /> Please discuss any concerns or options you may have with Jerry Moore of Moore Petroleum or Tom <br /> Landwehr at APEX. <br /> If you have any questions contact me at(209)468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Site Mitigation Unit <br /> c: CVRWQCB-Pat Anderson <br /> Alloore Petroleum-Jerry Moore <br /> ✓APEX-Tom Landwehr <br /> A Division of San Joaquin County Health Care Services <br />