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4 <br /> RBCA SITE ASSESSMENT <br /> Cumulathre Risk Worksheet <br /> Site Name Table3-6 Completed By Denise Clendening <br /> Site Location 1000 feet (?ate Com leted 1/1/1999 2 OF 3 <br /> Cumulative Target Risk 0 0E+0 Target Hazard Index 0 0E+0 <br /> CUMULATIVE RISK WORKSHEET <br /> ON-SITE RECEPTORS <br /> Uutdoor Air 3011 <br /> Commercial Exposure Indoor lir Commercial Exposure Groundwater <br /> Target Risk Target HO Target Risk Target HQ <br /> CONSTITUENTS OF CONCERN 10E511 OE-5 1 OE+O 1 OE5!1 OE-5 1 OE+O <br /> Carcinogenic Hazard Carcinogenic Hazard Caranogenc Hazard Carcragenk: Hazard <br /> CAS No Name Risk Ouohent I Risk ouotient Risk OuoHerit I Risk Quotient <br /> 71-43-2 Benzene 6 3E-7 1 OE-2 NA NA 7 3E-7 6 BE-3 NA NA <br /> 67466-3 Chloroform 2 7E-11 NA NA 0 OE+O 0 OE+O NA NA <br /> 1074ar2 Dichlar mthane 1,2- 8 9E-9 9 6E-5 NA NA 0 OE+O NA NA <br /> 100-41-4 EthIbenzerle 5 2E4 NA NA 41E-3 NA NA <br /> 1634-04-4 Metht-Butyl Ether 2 7E-12 2 OE-8 NA NA 0 OE+0 NA NA <br /> 91-20-3 Naphthalene NA NA 00E+O NA NA <br /> 100-42-5 Styrene 2 2E-9 NA NA 0 OE+O NA NA <br /> 127-184Tetrachloroethene 21 E-12 I NA NA 0 OE+O 0 OE40 NA NA <br /> 106-88-3 Toluene 2 9E-3 NA NA 3 7E-3 NA NA <br /> 1330-20-7 X lens mixed isomers 2 5E-3 NA NA 7 2E4 NA NA <br /> Cumulative Values 6 4E_7 0 I 1 6E-2 a 0 OE+O 0 0E+0 7 3E-7 131 1 SE-2 a 0 OE+O 0 0E+0 <br /> a hdlmtaa Ask lad aaoomq brgat Ask <br /> Software GSI RSCA Spreadsheet Serial f3-373-ZOX 798 <br /> 0 Groundwater Servxes Inc (GS) 1995.1997 All Rights Reserved Version 10 1 <br />