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Problem Assessment Report <br /> USA Petroleum Station No. 65, Lodi, California December 5, 1939 <br /> r AGS 87050-3 <br /> with respect to the City of Lodi Department of Public Works bench mark No. 637 on the <br /> southwest corner of Lower Sacramento Road and West Lodi Avenue. According to <br /> Maldenhauer personnel, this bench mark is references) to file United States Geodetic <br /> Survey with an elevation of 37,63 above mean sea level. Tire elevations of the monitoring <br /> wells were referenced to within 0.01 foot of bench mark No. 637. 'I'lre horizontal distances <br /> i <br /> were measured to the nearest 0.1 foot. <br /> 1-kBORATORY RESUI,'1'S <br /> Soil and groundwater samples collected were sent to the Applied GeoSystems analytical <br /> laboratory in Fremont, California, (Hazardous Waste Testing Laboratory No. 153), Soil <br /> ff <br /> �. samples were analyzed for total petroleum hydrocarbons(TPH)as gasoline using modified <br /> z <br /> EPA IVfethod 8015,and for BTEX using EPA Method 8020, Water samples were analyzed <br /> for'1'P1-f as gasoline using modified EPA Method 8015 and 13TEX using EPA Method 602. <br /> Copies of these records are included in Appendix D. <br /> l. <br /> oil <br /> Table 6 shows results of laboratory analyses for the soil samples. Tire concentratiorrs of <br /> x r <br /> Ehydrocarbon contaminants in soil samples collected from immediately above the round- <br /> --s—- <br /> i water surface in each.boring were-below-detection-linriis--for the-fe§ts used. Chemical <br /> results of the composite soil sartrple of the drill cuttings (5-0119-IAL3C) slrowed.berizene r <br /> s <br /> and toluene were detected at levels of 0.07 <br /> ppm; the other constituents are belotiv the limits r <br /> s1 for the tests used. <br /> 24 . <br /> F <br /> A,vplie� <br />