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Claytott <br /> 'fable l <br /> Gasoline and BTEX Concentrations in Soil Simples Colle(led <br /> on March 28, 1990 <br /> EPA Method MW-1 MW-3 MW-3 <br /> 8020 for. (50.) (s.()= l 1.01) <br /> Toluene 0 010 0 040 0 050 <br /> Eth ]benzene < 0 005 0 035 0 330 <br /> X lenes < 0 005 0 460 0 730 <br /> EPA.Metbod` <br /> 8015 for. <br /> x <br /> Total Petroleum < 0 300 60 68 <br /> Hydrocarbons as <br /> Gasoline <br /> All concentrations are in mg/kg (milligrams per kilogram, or parts per million) <br /> Analysis of soil samples from boreholes for wells MW-1 and MW-2 did not show <br /> detectable levels of gasoline or BTEX, except for a very low concentration of <br /> toluene in MW-1 at 5 feet (10 ppb) The source of the toluene is unclear <br /> Toluene was not detected creeper in the boring nor was it detected in the <br /> groundwater <br /> Concentrations of gasoline, toluene, ethylbenzene, and xylene to soil samples from <br /> the borehole for well MW-3, next to the old gasoline tank, exceeded LUFT <br /> guidelines The shallow groundwater and the relatively npr.neable soils underlying <br /> the site increase the potential for contamination of groundwater <br /> Table 2 <br /> Hydroatdmn 00 and Grease Concentrations in Soil Samples Collected <br /> on March 28, 1940 <br /> FHydrocArbon <br /> hod d1.�3.2t MW-1 M1�V-1 MyV 27[ !]r; 5 0' 1T0� 5 S'Oil 20 20 70 <br /> e <br /> EPA Method 418.1 MW-3 MW-3 RWQCB <br /> for. 60 ' 110') Recommendations <br /> Hydrocarbon Oil and 250 70 100 <br /> Greiu <br /> 4- <br />