Laserfiche WebLink
RISC Manual Version 4.0 <br /> Table H-Z. Equations Used to Calculate Tier 1 Risk-Based Screening Levels <br /> (RBSLs)—Non-Carcinogenic Effects <br /> (page 3 of 5) <br /> RBSLs in GROUNDWATER [mg/l] <br /> Ingestion of Groundwater <br /> Residential <br /> RBSL = THQ x AT,,� x BW�x RfD,, x 365 d <br /> &'" EF,x ED,x ING(gw), yr <br /> Commercral/In d ustrial <br /> RBSL — THQ x AT,,,, x BW,x RfD,, x 365 d <br /> g" EF,x ED,x ING(gw), yr <br /> RBSLs in GROUNDWATER [mg/1] <br /> Volatilization from Groundwater and Inhalation of Indoor Air <br /> Residential and Commercial/Industrial <br /> RBSL — RBSL,,,,r a,, x10_3 mg <br /> g'" _ VF..p µg <br /> RBSLs in GROUNDWATER [mgll] <br /> Volatilization from Groundwater and Inhalation of Outdoor Air <br /> Residential and CommerciaMdustrial <br /> RBSL = RBSLo l ail x 10-3 mg <br /> ," VF..b µg <br /> If the RBSL calculated for groundwater exceeds the solubility of the chemical <br /> in water,the target nsk cannot be exceeded for any concentration and " SOL" <br /> is entered in the"RBSLs"worksheet <br /> H-14 <br />