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Table 2: Equations Used to Develop Soil Screening Levels for the Direct Contact Pathways <br />for a Commercial/Industrial Exposure Scenario <br />Carcinogenic — Commercial/Industrial (c/i) <br />Incidental ingestion of soil <br />TR x ATca „ x365d/yr xBIA/c/i <br />SLc / i—sol—ca—ing = <br />SF° X EFc/i X Epoi X IRScii X 1E-6 kg/mg <br />Inhalation of particulates and volatiles <br />TR x AT,„ x 365d/yr <br />SLc = / i—sol—ca—inh ( \ <br />1000 pg IURx <br />( <br />VFc / i + <br />x 365d/yr <br />1 <br />xEDc/ixETc x <br />x BINci, <br />( \ <br />1 day <br />xEFc/i x <br />mg , <br />Dermal Contact with soil <br />TR x ATcorc <br />PEFc „ i 24 hours \ / <br />Skii-sol-ca-cier — SF <br />SA.Sch x AF /i x ABS, x 1E— 6kg/ <br />1 <br />mg <br />GIABS xEF <br />oi xED,/,x <br />Total <br />Cc/ i—so/—ca—tot = 1 1 1 <br />+ + <br />SL,/ i—sol—ca—ing SLc/i-sol-ca-inh SLc/i-sol-ca-der <br />Noncarcinogenic — Commercial/Industrial <br />Incidental ingestion of soil <br />THQx13Wc1. x A Tnc x ED0 x 365d/yr <br />365 d/ yr <br />C ch-sol-nc-ing = 1 <br />EF c/i cy, xIRSc/i x <br />1E-6kg <br />xED .x <br />RfD, mg <br />Inhalation of particulates and volatiles <br />THQx AT„ x ED0 x 365d/yr <br />Cc/i- ol-nc-inh = <br />lclay 1 x x x x <br />/ <br />VF „ + <br />` ' • <br />x ED, <br />\ 1 EFc/i EDc/i ETc/i 24hours RfC <br />Dermal contact with soil <br />THQ x BW, x AT„ <br />PEFc „ i <br />x <br />Cc/i-sol-nc-der = 1 x X X SAS,,, x AFcei x ABS, /E — 6kg x EF, ED, <br />(RfDa x GIABS) <br />Total <br />1 <br />mg <br />Coi-soi-nc-tot = 1 1 1 <br />+ + <br />SLc/i-sol-nc-ing SLc/i-sol-nc-inh SLc/i-sol-nc-der <br />14