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1 <br /> 16 October 2006 <br /> AGE-NC Project No. 98-0520 <br /> ' Page 5 of 10 <br /> • Ethyl-benzene:0.000000471 µg/1 which is significantly lower than the residential ESL (worst <br /> case) of 420,000,000 µg11. <br /> • Toluene: 0.00000000126 µg11 which is significantly lower than the residential ESL of <br /> ' 63,000,000 µg/l. <br /> • TPH Aromatic C8-10: 0.00000633 µg/l which is significantly lower than the residential ESL <br /> ' of 26,000,000 µg11. <br /> • TPH Aromatic CIO-C12: 0.00000578 µg/l which is significantly lower than the residential <br /> ESL of 26,000,000 µg/1. <br /> • Total xylenes: 0.000000213 µg/1 which is significantly lower than the residential ESL of <br /> 150,000,000 µg/l. <br /> ' The hazard index for the inhalation of outdoor air for ethyl-benzene, toluene and total <br /> xylenes was below 0.00000032, 0.0000000022, and 0.0000014 respectively. <br /> ' The hazard index for the inhalation of outdoor air for TPH Aromatic C8-10 and TPH <br /> Aromatic CIO-12 was 0.000023 and 0.000021, respectively. <br /> Constituents of concern modeled for volatilization from\soil to indoor air cluded ethyl-benzene, <br /> toluene, TPH aromatic C8-10, TPH aromatic C 10-12, and ylen'es:=Additional.input provided for <br /> ' fate and transport modeling for volatilization from round water to outdoor airYncluded: <br /> • Simulation time: 100 years. <br /> • Total soil porosity in soil source and unsaturated zone: 0.25 cm3/cm3. <br /> • Water content in soil source and unsaturated zone: 0.15 cm31cm3. <br /> ' 0 Fraction organic carbon in soil source: 0.02 milligram per milligram. <br /> • Soil bulk density in soil source: 1.7 grams per cm3. <br /> ' Distance from soil source to building: 6.0 meters. <br /> ' 0 Lens thickness: 6.0 meters. <br /> • Total porosity in lens: 0.25 cm3/cm3. <br /> • Water content in lens: 0.15 cm3/cm3. <br /> Additional input parameters including diffusion coefficient input parameters are included in <br /> ' Appendix F. <br /> Advanced GeoEnvironmental,Inc. <br /> 1 <br />