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PUBLIC HtALTH SERVICES P001N <br /> SAN JOAQUIN COUNTY Q <br /> ENVIRONMENTAL HEALTH DIVISION < <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9520 <br /> 209/468-3420 U U <br /> KAREN PETRYNA MAR 3 O 2000 <br /> FQUILON ENTERPRISES LLC <br /> P O BOX 6249 <br /> CARSON CA 90749-62-49 <br /> RE: SHELL SERVICE STATION SITE CODE: 1746 <br /> 880 VICTOR ROAD <br /> LODI CA 95240 ` <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed Site Investigation/Fourth Quarter 1999 Groundwater <br /> Monitoring Report dated February'10, 2000 prepared by Cambria. Analytical results of <br /> the ground water sample taken from Monitoring Well N3 (MW-3) were 6,990 parts per <br /> billion (ppb) of Methyl Tert-Butyl Ether (MTBE) using EPA method 8260, 75.3 ppb of <br /> Total Petroleum Hydrocarbon as gasoline (TPPH), and non detect at below detection <br /> limit for Benzene, Toluene, Ethyl-Benzene, and Xylenes (BTEX collectively). <br /> Analytical results of the soil sample taken from MW-3 at 60.5 feet below surface grade <br /> (bsg) were 0.294 parts per million (ppm) of MTBE. 3 tables prepared by Cambria were <br /> included in the report. Ground water elevation data, and analytical results of TPPH <br /> and BTEX of the 3 MWs were not listed in Table 3 Additional Groundwater <br /> Analytical Data. However, Appendix C included the table Well Concentrations <br /> prepared by Blaine Tech Services compiling the analytical results and elevation data of <br /> the three MWs. <br /> According to Site Investigation Report dated June 9, 1999 prepared by Cambria, <br /> analytical results of the grab water sample collected from soil boring k3 (SB-3) were <br /> 46,000 parts per billion (ppb) of TPH-g, 243 ppb of Benzene, 2,270 ppb of Toluene, <br /> 1,380 ppb of Ethylbenzene, 13,900 ppb of Xylenes, and 28,000 ppb of MTBE. <br /> Analytical results of the grab water sample collected from SB-4 were 6,610 ppb of <br /> TPH-g, 63.6 ppb, 85.5 ppb, 200 ppb, and 1,240 ppb of BTEX, respectively, and 8,050 <br /> ppb of MTBE. SB-3 and SB-4 were placed within 5 feet of the southeast and southwest <br /> corner of the still existing underground storage tanks (UST). The above-mentioned <br /> MW-3 is located approximately 30 feet south of both SB-3 and SB-4. <br /> PHS/EHD agrees with the report's conclusion that the dispenser island area is not the <br /> source area of the petroleum hydrocarbons and MTBE detected in groundwater. The <br /> report concluded that the USTs are likely the primary source area of a release. In <br /> A Division of San Joaquin County Health Care Services <br />