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rrr .� �.� .� ,�► +.r. f>i► �. � .� ,� lel rrr +�I ,� ,� ,� � � <br /> RBCA SITE ASSESSMENT <br /> tier 2 worksheet 9 3 <br /> Site Name Tabte33 Completed By Denise Clendening <br /> Site Location 500 feet Date Com leled 111!1999 10F 1 <br /> Target Risk(Class A G 8)t OE-8 ❑ MCL exposure limit? Calculation Option 3 <br /> GROUNDWATER SSTL VALUES Target Risk(Class C) 10E 5 ❑ PEL exposurelimrt7 GroundwateroAFOption Domenico-FW Order <br /> Target Hazard Quotient 1 0E+0 (Two-directional vert disporslon) <br /> SSTL Results For Complete Exposure Pathways K Com lete <br /> Representative <br /> Concentration Groundwater Volatilization Groundwater Volatilization Applicable SSTL <br /> CONSTITUENTS OF CONCERN TX Groundwater ftestion to Indoor Air X I to Outdoor Air SSTL Exceeded 7 Required CRF <br /> Residential Commercial Regulatory(MCL) Residential Commerclal Residential Commercial <br /> CAS No Name 500 feet on-am 500 feet ai ails on-ske co-Ma (on-s") "®"If yes On K' es left <br /> 712 Benzene 23E+0 >Sol NA NA NA NA NA 1 9E+1 1 9E+1 ❑ <1 <br /> 67-66-3 Chloroform 8 DE4 >Sol NA NA NA NA NA 3 0E+1 3 0E+1 ❑ <1 <br /> 1074)6-2 Dlchloroethane 1.2- 4 6E-1 >Sol NA NA NA NA NA 5 2E+1 5 2E+1 ❑ <1 <br /> 1006-41-4.Ethylbemene 2 BEA >Sol NA NA NA NA NA >Sol >Sol 13 <1 <br /> 16344044 Met t-Butyl Ether 8 7E-3 >Sol NA NA NA NA NA 1 4E+4 1 4E+4 ❑ <1 <br /> 91-2D-3 Naphthalene 2OE-1 >Sol NA NA NA NA NA NA >Sol O <1 <br /> 100-42-5 Styrene 9 OE-4 >Sol NA NA NA NA NA >Sol >Sol ❑ c1 <br /> 127-184 Tetrachloroethene 6 DE4 >Sol NA NA NA NA NA >Sol >Sol ❑ <1 <br /> 10840-3 Toluene 2 OE+O >Sol NA NA NA NA NA >Sol >Sol ❑ <1 <br /> 13*2D-7 jXylene mixed isomers 9_8E-1 >Sol NA NA NA___T NA NA >Sol >Sol ❑ <1 <br /> >Sol Indicates risk-based target concentration greater than constituent solubility <br /> Software GSI RBCA Spreadsheet Senal G 373-ZOX-798 <br /> C Groundwater Services Inc (GSI) 1995.1997 All Rights Reserved Version 10 1 <br />