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rr r sr rr rr rr r r +r � r +r rr r .■r <br /> RBCA SITE ASSESSMENT <br /> Tier 2 Worksheet 91 <br /> Site Name Table3-3 Completed By Denise Clenderang <br /> Site Location 500 feet Date Cam feted 11111999 1 OF 1 <br /> Target Risk(Claes A d B) 1 DE 6 ❑ MCL exposure limit? Calculation option 3 <br /> SURFACE SOIL SSTL VALUES Target Rlsk(Class C) 1 DE 5 ❑ PEL exposure rimd9 Groundwater DAF option Domenico First Order <br /> <15 FT BGS Target Hazard Quotlent 1 DEM (rwo4lrecoonal vert dispersion) <br /> ssTL Results For Complete Exposure Pal H Compfere <br /> Rapreserrtallve <br /> Concemtratlon Ingestion inhalation Construction Applicable SST( <br /> CONSTITUENTS OF CONCERN X Sod Leaching to Groundwater X and Dermal Contact Worker SM Exceeded I RoquInad CRF <br /> Residential Commercial Regulatory(MCL) Residential Commarclsl Commercial <br /> CAS No Name m Sao feat —site 500 feet Sao Leet on-s" on-site m "®"If yes Only M yes left <br /> 7143-2 Benzene 7 1 E-1 >Res NA NA 5 4E+1 7 9E-1 NA 7 9E-1 ❑ <1 <br /> 67-66-3 Chloroform 0 0E+0 >Res NA NA 6 8E+1 4 OE+0 NA 4 OE+O ❑ <1 <br /> 107406-2 Dichloroethane 1,2- 0 OE+O >Res NA NA 6 0E+1 8 7E-1 NA 8 7E-1 ❑ <1 <br /> 100.41-4 Ethylbertzene 1 4E+1 >Res I NA NA >Res >Res NA >Res ❑ 'Cl <br /> 163444-4 Meth t-ByW Ether 0 OE+0 >Res NA NA >Res 4 OE+3 NA 4 OE+3 ❑ <1 <br /> 91-20-3 Naphthalene 00E+0 >Res NA NA >Res >Res NA >Res ❑ <1 <br /> 100-42-5 Styrene 00E+O >Res NA NA >Res >Res NA >Res ❑ <1 <br /> 127-18-4 Tetrachloroethene 0 OE+O >Res NA NA >Res 1 8E+0 NA 1 8E+0 ❑ <1 <br /> 108-88-3 Toluene 26E+1 >Res I NA I NA >Res >Res NA >Res ❑ <1 <br /> 1330 20-7 X etre mixed isomers 5 0E+1 >Res I NA I NA >Res >Res NA >Res ❑ <1 <br /> >Res Indicates risk based target concentration greater than constituent residual saturation value <br /> Software GSI RBCA Spreadsheet Serial G 373-ZOX 799 <br /> O Groundwater Services Inc [GSQ 1995.1997 All Rights Reserved Version 10 1 <br />