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RBCA SITE ASSESSMENTTier 2 Worksheet 4 3 <br /> Site Narne Tabie3-6 Completed By pemse Clendening <br /> Site Location 500 feet pate Com leted 1/1!1999 1 OF f< <br /> Target Risk(Class A&6) 1 OE 6 ❑ MCL exposure limit? Caicwatlan option 3 <br /> GROUNDWATER SSTL VALUES Target Risk(Class C) t OE 5 ❑ PEL exposure limp? Groundwater DAF Option Domenico First order <br /> Target Hazard Quotient 1 OE+o (Two-dkedlomf+vert disperalon) <br /> 53TL Results For Com late ExposurD Path N Complete <br /> Representadivo <br /> Concontratlon Groundwater VOlatiirzation Groundwater Volatilization Applicable SSR, <br /> CONSTITUENTS OF CONCERN X Groundwater Ingestion I to Indoor Air X I to Outdoor Air sm Exceeded 7 R uhxl CRF <br /> Residential Commercial Regulalory(MCL) Residential Commercial Residential Commercial <br /> CAS No Namo (MiN 500 het omske 500 feet or�ske) (on-Sft) otske on-sRe m '®'It yes Only If yes left <br /> 71-43-2 Benzene 61 E+0 >Sol NA NA NA NA NA 1 9E+1 1 9E+1 ❑ <1 <br /> 67-66-3 Chloroform 8 OE4 >Sol NA NA NA NA NA 3 0E+1 3 0E+1 ❑ <1 <br /> 107.06-2 Dichloroethane 1.2- 4 6E-1 >Sol NA NA NA NA NA S 2E+1 5 2E+1 ❑ <1 <br /> 100-41-4 Ethylbenzene 75E-1 >Sol NA NA NA NA NA >Sol >Sol ❑ <1 <br /> 1634-04-4 Meth t-Butyl Ether 3 7E-2 >Sol NA NA NA NA NA 1 4E+4 1 4E+4 ❑ <1 <br /> 91-20-3 Naphthalene 20E-1 >Sol NA NA NA NA NA NA >Sol ❑ <1 <br /> I OD-42-51 Styrene 9 OE4 >Sol NA NA NA NA NA >Sol >Sof ❑ c1 <br /> 127-18-4Tetrachloroethene 6OE-4 >Sol NA NA NA NA NA >Sol >Sol 13 <1 <br /> 10848-3 Toluene 5 6E+0 >Sol NA NA NA NA NA Sol >Sol O <1 <br /> 1330-20-7 X ens mixed isomers 2 7E+0 >Sol NA NA NA NA NA >Sol >Sol ❑ c1 <br /> >Sd indicates risk based target ooncerdration greater than constituent solubility <br /> Software GSI RBCA Spreadsheet Serial G-373-ZOX 798 <br /> O Groundwater Services Irx (GSI) 1995.1997 All Rights Reserved Version 10 1 <br /> I <br />