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Table A-2 <br /> Kleinfelder Sail Sample Analytical Results-Metals <br /> Race Track Area <br /> Stockton 99 Speedway, Stockton, California <br /> Sample Identification <br /> Race Track Area <br /> OEHA Residential <br /> (Soil) <br /> Metal Sample Jan t DRGs for Soil TTLC STLC <br /> Date HA1-3' HAI-5' HA2-3' HA3-3' HA4-3' HA4-5' HA5-3' HAG-3' 2005 (1011102) <br /> Unit mglkg mglkg mglkg mglkg mglkg mglkg mglkg mglkg mglkg mglkg mglkg mgA <br /> Cadmium 717105 0.545 <0.1 <0.1 0.283 0.397 <0.1 <0.1 <0.1 1.7(2) 37(1) 100 1 <br /> Chromium 7/7105 139 161 144 129 106 153 119 129 ** 21012) 2,500 5 <br /> Lead 717105 23.3 18.2 15 14.9 13.9 26.5 22.1 16.7 15011) 40011), 150(") 1,000 5 <br /> Nickel 7/7105 129 123 116 119 99.6 138 131 118 11600 1,600"")1,600114 2,000 20 <br /> Zinc 7/7105 161 116 138 1 164 115 1 155 1 129 144 23,000(l) 23.0000F 5,000 250 <br /> Notes: <br /> Feet bgs= Feet below ground surface <br /> mglkg= Concentrations reported in milligrams per kilogram (mg/kg). <br /> mg/L= Concentrations reported in milligrams per liter(mg/1). <br /> <= Not detected at or above the detection limits shown for the individual analytes. <br /> PRGs =preliminary remediation goals <br /> OEHHA= Office of Environmental Health Hazard Assessment(human exposure based screening numbers) <br /> TTLC =total threshold limit concentration <br /> STLC= soluble threshold limit concentration <br /> ***=no chromium and compound screening number. Chromium III [100,000 mg/kg (1)], Chromium VI, 1.7 mg/kg(2)] <br /> (1) =non carcinogenic hazard <br /> (2) =cancer risk 1 E-06 <br /> (3) _"CAL-Modified PRG" <br /> (4) =nickel as soluble salts <br /> Table A-1.As/Table A-2 Metals Page 1 of 1 The Source Group <br />