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. DATA ENOEET <br /> GW-SCREEN CALCULATE RISK BASED GROUNDWATER CONCENTRATION(enter"X"in"YES"box) DTSC <br /> Version 3 0,04103 Vapor Intrusion Guidance <br /> YES 0 Interim Final 12M4 <br /> Reset to OR (last modified 1121105) <br /> Defaults CALCULATE INCREMENTAL RISKS FROM ACTUAL GROUNDWATER CONCENTRATION <br /> (enter"X'in"YES'box and initial groundwater cont below) <br /> YES D <br /> ENTER ENTER <br /> Initial <br /> Chemical groundwater <br /> CAS No cont <br /> (numbers only, Cw <br /> no dashes) (µg1L) Chemical <br /> 1634044 MTBE <br /> ENTER ENTER ENTER ENTER <br /> MORE Depth <br /> below grade Average ENTER <br /> to b0tt0m Depth sod/ Average vapor <br /> of enclosed below grade SCS groundwater flow rate Into bldg <br /> space floor, t0 water table soil type temperature (Leave blank to calculate) <br /> Lr LWI directly above Ts Q" <br /> (cm) (Cm) water table CC) (um) <br /> 15 105156 SI 24 0 <br /> (Lowest measured depth July 2004-Apnl 2005) <br /> MORE <br /> ENTER ENTER <br /> Vadose zone User-defined ENTER ENTER ENTER ENTER <br /> SCS vandoss zone Vadose zone Vadose zone Vadose zone Vadosezone <br /> sod type soil vapor SCS sod dry sod total sod water filled <br /> (used to estimate OR permeability sod type bulk density porosity porosity <br /> sod vapor <br /> k„ uaalwp�swi pbV nv gN,v <br /> peffneability) (crn�) Perometera (g/cm") undies$ (cm'/cm) <br /> SI SI 135 0 489 0 167 <br /> MORE <br /> ENTER ENTER ENTER ENTER ENTER ENTER <br /> Target Target hazard Averaging Averaging <br /> risk for quotient for time for time for Exposure Exposure <br /> carcinogens noncar anogens carcinogens rmrrrarclnogens duration frequency <br /> TR THQ ATc ATNc ED EF <br /> (unitless) (unities$) (yrs) (yrs) (yrs) (daYslyr) <br /> 1OE-06 1 70 25 1 25 250 <br /> Used to calculate risk-based <br /> groundwater concentration <br /> i <br /> MTBE <br /> DTSC/HERD DTSC Indoor Air Guidance 7119=5 <br /> Lest Update 1111103 Uncimrfied Sod Screening Model 147 PM <br />