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I <br /> TABLE 7 <br /> SUMMARY OF COPCs IN GROUNDWATER ' <br /> US CAN—WELTY ROAD <br /> 35275 Welty Road <br /> Vernalis,California <br /> Maximum ' <br /> Number of Detected <br /> Groundwater Number of Concentration EPC,Cw ' <br /> COPC Samples Detects (It /L) (µ /L)1 <br /> BTEX <br /> Benzene 35 1 0.60 0.60 ' <br /> Eth lbenzene 35 3 5.9 5.9 <br /> Total Xylenes 35 4 1.9 1.9 <br /> PAHs <br /> Acenaphthene 31 12 18 18 <br /> Benzo(b)fluoranthene 31 R 3.1 3.1 <br /> Chrysene 31 13 24 24 <br /> Fluorene 31 19 100 100 <br /> Meth lna hthalenesz 8 6 0.093 0.093 <br /> Naphthalene 31 20 14 14 <br /> Pyrene 31 15 13 13 <br /> Abbreviations: ' <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> COPC=Constituent of potential concern <br /> Cw=Concentration in groundwater <br /> EPC=Exposure point concentration ' <br /> µg/L=Micrograms per liter <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> Note: <br /> 1. The maximum detected concentration of each analyte was selected to represent the EPC. <br /> 2. The sum of the maximum detected concentrations of 1-methylnaphthalene and <br /> 2-methylnaphthalene is used as the EPC for methylnaphthalenes. <br /> 1 <br /> Page 1 of I SAIC <br /> I <br />