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Table 7 <br /> Permissible Contaminant Concentrations in Sod and Water <br /> Chevron Service Station 9-6171 <br /> 6633 Pacific Avenue <br /> Stockton,California <br /> Soil Water <br /> PRG' PRG" Background MCL Det.Lim Det Lim <br /> Constituent Type (mg/kg) (µg/L) (ppm) G tg/L.) (ppm) (Iagfl-) <br /> Benzene organic 1 3 034 NR 1 00011 0 5d <br /> Ethylbenzene organic 20 2 9 NR 100 00011 0 5d <br /> MtBE organic 36 6 2 NR 13 0 001` 2 0d <br /> TPHg organic 100 NR NR 100 10` 50d <br /> TPHd organic 100 NR NR 100 10` 50d <br /> Toluene organic 520 720 NR 150 0 001` 0 5d <br /> Xylene organic 420 210 NR 1,750 0 001` 0 5d <br /> Arsenic inorganic 1 6 0 045 0 8-47 50 1 0` NR <br /> Barium inorganic 67,000 2,600 324-379 11000 5 0` NR <br /> Cadmium inorganic 450 18 0 05-0 73 5 05, NR <br /> Chromium inorganic 450 110 26-49 50 50, NR <br /> Cobalt inorganic 1,900 730 43-98 NIA 5 0` NR <br /> Copper inorganic 41,000 1,500 13 7-24 4 1,300 5 0` NR <br /> Lead inorganic 150 00036 21 3-274 5 5 0` NR <br /> Nickel inorganic 20,000 730 15-113 100 5 01 NR <br /> Zinc inorganic 100,000 11,000 122-182 5,000 50` NR <br /> EXPLANATION <br /> TPHg = Total Petroleum Hydrocarbons as gasoline <br /> TPHd = Total Petroleum Hydrocarbons as diesel <br /> MtBE = Methyl Cert-butyl ether <br /> N/A = Not available <br /> NR = Not reported by agency responsible for study <br /> PRG' = 2002 USEPA Region IX Preliminary Remediation Goals for Residential Soil <br /> PRG' = 2002 USEPA Region IX Preliminary Remediation Goals for Tap Water <br /> Det Lim = Detection limits reported by the analytical laboratory responsible for analyses <br /> MCL = Maximum Contaminant Level <br /> gg/L = micrograms per liter(parts per billion) <br /> mg/kg = milligrams per kilogram(parts per million) <br /> c = Data reported by Lancaster Laboratories,Lancaster,Pennsylvania <br /> d = Data reported by Gettler-Ryan Incorporated,Dublin,California <br /> e = Data reported by Touchstone Developments,Santa Rosa,California <br /> f = Reported background concentrations in California soils (Reference Bradford G R Chang A C Page A <br /> Bakhtar, D, Frampton,J A,and Wright,H, 1996, Background concentrations of trace and mayor elements in <br /> Calffiomia soils Kearny Foundation Special Re rt, U C Riverside,pp 52 <br />' N\File$\ProjectslChevronlRetaill#9-61711Site Conceptual ModellWellSearch xis 1 of 1 <br />