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PUBL1t HEALTH SERVICES <br /> SAN JOAQUIN COCNTY <br /> IOGI KHANNA ALU_ALP H X <br /> Health Officct ` <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton, California 95201 FOR <br /> (209) 468-3400 <br /> ROD HUNTER <br /> LUSTRE-CAL NAMEPLATE CORPORATION <br /> P O BOX 439 MAY 0 8 'q9 3 <br /> LODI CA 95241-0439 <br /> RE: Lustre-Cal SITE CODE: 9005 <br /> 110 Turner Road <br /> Lodi CA 95240 <br /> San Joaquin County Public Health Services,Environmental Health Division (PHS/EHD)has <br /> completed review of the "Site Characterization Work Plan" dated March 1993 and prepared <br /> by WZI. PHS/EHD has prepared the following comments for your consideration. <br /> The work plan proposed soil borings and limited excavation with resampling to better define <br /> the extent of contamination. Petroleum hydrocarbon contamination was detected in the <br /> areas: Area A, Area D, and the Concrete Tank Area. The work plan proposed 4 vertical <br /> and 2 angled borings to define the extent of contamination associated with the concrete tank. <br /> Samples will be collected at five foot intervals and analyzed for total petroleum <br /> hydrocarbons (TPH) as gasoline and diesel, oil and grease. Benzene, toluene, ethylbenzene, <br /> and xylene analysis should also be conducted on soil samples collected. <br /> Limited excavation and resampling were proposed in the work plan to define the extent of <br /> contamination associated with Area A and Area D. Samples collected from Area A will <br /> be analyzed for TPH and oil and grease. Samples collected from Area D will be analyzed <br /> for TPH, Oil and Grease, and chlorinated organic compounds. <br /> PHS/EHD agrees that the proposed investigation should provide additional information <br /> necessary to better define the extent of vertical and horizontal migration of contamination. <br /> PHS/EHD has evaluated contamination which was evidenced during the July 1992 <br /> investigation using the Leaching Potential Analysis. Soil sample T-1 collected at 15 feet <br /> detected contamination which poses a threat to groundwater, 170 ppm TPH-gasoline and <br /> 17,000 ppm TPH-diesel. Seasonal high (1986) depth to groundwater in that area, as <br /> determined by the San Joaquin County Flood Control Department, is 30 feet. Based on the <br /> leaching potential analysis and the type of soil encountered (silty/sand between 15 and 26 <br /> feet) a groundwater investigation may be requested. <br /> A Division of tiara Jmquin County Health Cann X-mc" <br />