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RISC Manual Version 4.0 <br /> Table H-2. Equations Used to Calculate Tier 1 Risk-Based Screening Levels <br /> (RBSLs)-Non-Carcinogenic Effects <br /> (page 1 of 5) <br /> RBSLs in SURFICIAL SOIL [mg/kg] <br /> Ingestion Of Soil, Dermal Contact With Soil, <br /> ' Inhalation Of Vapors and Particulates in Outdoor Air <br /> Residential <br /> RBSL-,.,m„ <br /> THQxBW xAT,.x 3 6 5 d <br /> Yr <br /> I10' kgx(ING(sod),xRAF.+SSA(sod).xMxRAF,} <br /> EF x ED l- mg +(INH(out air),x(VF+VF,)) <br /> leo P)D,h <br /> CommercraUlndustrral <br /> RBS%,f w, = <br /> THQxBW,xAT,.x365 d <br /> Yr <br /> (10-6mg kg x(ING(sod),x RAF.+SSA(sod),x M x RAF,} <br /> EF,x ED, - +(INH(out air),x(YF+VFn)) <br /> RfD. RfD..b <br /> If the RBSL calculated for surfiaal soil exceeds the saturated sod <br /> concentration, Cm, the target risk cannot be exceeded for any concentration <br /> and "SAT" is entered in the "RBSLs" worksheet The equation used to <br /> calculate Cw is defined in Table H4 <br /> H-97 <br />