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FILE UPI <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> pPpUIN C SAN JOAQUIN COUNTY <br /> s.• _,;�'•.oG Unit Supervisors <br /> _ ? Donna K.Heran,R.E.H.S. Third Floor Carl Borgman,R.E.H.S. <br /> N Director 304 East Weber Avenue, <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • �... �P• Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> '9Lij O6"Vt Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> AJAY S RANCHOD <br /> 4225 E HAMMER LANE FEB 2 7 2003 <br /> STOCKTON CA 95212 <br /> RE: 18019 & 18043 S. Manthey Road <br /> Lathrop, CA <br /> San Joaquin County Environmental Health Department (EHD) has been notified <br /> that the above referenced units were functioning as drug laboratories where <br /> hazardous materials/waste were handled. EHD required you to assess the <br /> dwellings, domestic well, abandoned well and septic system. A sample of the <br /> contents of the septic tank and a sample of the water from the domestic well <br /> were obtained and analyzed. The analytical results showed that disposal of <br /> chemicals (toluene, xylene, isopropylbenzene etc.) into the septic system had <br /> occurred. San Joaquin County Ordinance Code Section 9-1110.7 prohibits <br /> disposal of solvents and toxics in a septic system. <br /> EHD has implemented a Local Agency Groundwater Protection/Underground <br /> Injection Control (UIC) Program in accordance with guidelines prepared by the <br /> United States Environmental Protection Agency (USEPA). The primary focus of <br /> the program is to protect drinking water by identification and evaluation of <br /> subsurface disposal of prohibited substances. The presence of the above <br /> substances in your septic tank makes it subject to the underground injection <br /> control regulations and our local program. <br /> Further investigation to determine if the chemicals found in the septic tank flowed <br /> into the leach lines of the septic system must be performed to evaluate if there is <br /> an impact or threat of impact to drinking water. If chemicals have been released <br /> to the leach lines, further use (continued disposal of liquids) of the septic system <br /> may cause further percolation of the chemicals, increasing the impact or threat of <br /> impact of the chemicals to the groundwater. Therefore, EHD recommends the <br /> septic system not be used until investigation results show that it's use is not a <br /> threat to the environment. <br /> The contents of the abandoned well were to be sampled and analyzed. The <br /> analytical results of those samples will determine if additional investigation of that <br /> area of possible illegal disposal of chemicals is necessary. <br />