C Tier 2 Illustrations and Tables

Section 742.APPENDIX C   Tier 2 Illustrations and Tables Section 742.TABLE B   SSL Parameters Symbol Parameter Units Source Parameter Value(s) AT Averaging Time for Noncarcinogens in Ingestion Equation yr Residential = 6 Industrial/Commercial = 25 Construction Worker = 0.115 AT Averaging Time for Noncarcinogens in Inhalation Equation yr Residential = 30 Industrial/Commercial = 25 Construction Worker = 0.115 AT c Averaging Time for Carcinogens yr SSL 70 BW Body Weight kg Residential = 15, noncarcinogens 70, carcinogens Industrial/Commercial = 70 Construction Worker = 70 C sat Soil Saturation Concentration mg/kg Appendix A, Table A or Equation S29 in Appendix C, Table A Chemical-Specific or Calculated Value C w Target Soil Leachate Concentration mg/L Equation S18 in Appendix C, Table A Groundwater Standard, Health Advisory concentration, or Calculated Value d Mixing Zone Depth m SSL or Equation S25 in Appendix C, Table A 2 m or Calculated Value d a Aquifer Thickness m Field Measurement Site-Specific d s Depth of Source (Vertical thickness of contamination) m Field Measurement or Estimation Site-Specific Symbol Parameter Units Source Parameter Value(s) D A Apparent Diffusivity cm 2 /s Equation S10 in Appendix C, Table A Calculated Value D i Diffusivity in Air cm 2 /s Appendix C, Table E Chemical-Specific D w Diffusivity in Water cm 2 /s Appendix C, Table E Chemical-Specific DF Dilution Factor unitless Equation S22 in Appendix C, Table A 20 or Calculated Value ED Exposure Duration for Ingestion of Carcinogens yr Industrial/Commercial = 25 Construction Worker = 1 ED Exposure Duration for Inhalation of Carcinogens yr Residential = 30 Industrial/Commercial = 25 Construction Worker = 1 ED Exposure Duration for Ingestion of Noncarcinogens yr Residential = 6 Industrial/Commercial = 25 Construction Worker = 1 ED Exposure Duration for Inhalation of Noncarcinogens yr Residential = 30 Industrial/Commercial = 25 Construction Worker = 1 ED Exposure Duration for the Direct Ingestion of Groundwater yr Residential = 30 Industrial/Commercial = 25 Construction Worker = 1 ED M-L Exposure Duration for Migration to Groundwater Mass-Limit Equation S28 yr SSL 70 EF Exposure Frequency d/yr Residential = 350 Industrial/Commercial = 250 Construction Worker = 30 F(x) Function dependent on U m /U t unitless SSL 0.194 f oc Organic Carbon Content of Soil g/g SSL or Field Measurement (See Appendix C, Table F) Surface Soil = 0.006 Subsurface soil = 0.002, or Site-Specific GW obj Groundwater Remediation Remediation Objective mg/L Appendix B, Table E, 35 IAC 620.Subpart F, or Equation S23 in Appendix C, Table A Chemical-Specific or Calculated H' Henry's Law Constant unitless Appendix C, Table E Chemical-Specific i Hydraulic Gradient m/m Field Measurement (See Appendix C, Table F) Site-Specific I Infiltration Rate m/yr SSL 0.3 I M-L Infiltration Rate for Migration to Groundwater Mass-Limit Equation S28 m/yr SSL 0.18 IF soil-adj (residential) Age Adjusted Soil Ingestion Factor for Carcinogens (mg-yr)/ (kg-d) SSL 114 IR soil Soil Ingestion Rate mg/d Residential = 200 Industrial/Commercial = 50 Construction Worker = 480 IR W Daily Water Ingestion Rate L/d Residential = 2 Industrial/Commercial = 1 K Aquifer Hydraulic Conductivity m/yr Field Measurement (See Appendix C, Table F) Site-Specific K d (Non-ionizing organics) Soil-Water Partition Coefficient cm 3 /g or L/kg Equation S19 in Appendix C, Table A Calculated Value K d (Ionizing organics) Soil-Water Partition Coefficient cm 3 /g or L/kg Equation S19 in Appendix C, Table A Chemical and pH-Specific (see Appendix C, Table I) K d (In-organics) Soil-Water Partition Coefficient cm 3 /g or L/kg Appendix C, Table J Chemical and pH-Specific K oc Organic Carbon Partition Coefficient cm 3 /g or L/kg Appendix C, Table E or Appendix C, Table I Chemical-Specific K s Saturated Hydraulic Conductivity m/yr Appendix C, Table K Appendix C, Illustration C Site-Specific L Source Length Parallel to Groundwater Flow m Field Measurement Site-Specific PEF Particulate Emission Factor m 3 /kg SSL or Equation S15 in Appendix C, Table A Residential = 1.32 • 10 9 or Site-Specific Industrial/Commercial = 1.24 • 10 9 or Site-Specific PEF′ Particulate Emission Factor adjusted for Agitation (construction worker) m 3 /kg Equation S16 in Appendix C, Table A using PEF (industrial/commercial) 1.24 • 10 8 or Site-Specific Q/C (used in VF equations) Inverse of the mean concentration at the center of a square source (g/m 2 -s)/ (kg/m 3 ) Appendix C, Table H Residential = 68.81 Industrial/Commercial = 85.81 Construction Worker = 85.81 Q/C (used in PEF equations) Inverse of the mean concentration at the center of a square source (g/m 2 -s)/ (kg/m 3 ) SSL or Appendix C, Table H Residential = 90.80 Industrial/Commercial = 85.81 Construction Worker = 85.81 RfC Inhalation Reference Concentration mg/m 3 Illinois EPA:  http://www.epa.state.il.us/land/taco/toxicity-values.xls Toxicological-Specific (Note: for Construction Workers use subchronic reference concentrations) RfD o Oral Reference Dose mg/(kg-d) Illinois EPA: http://www.epa.state.il.us/land/taco/ toxicity-values.xls Toxicological-Specific (Note: for Construction Workers use subchronic reference doses) RO soil Soil remediation objective mg/kg Equation S30 in Appendix C, Table A Calculated value RO soil gas Soil gas remediation objective mg/m 3 Equation S30 in Appendix C, Table A Calculated value S Solubility in Water mg/L Appendix C, Table E Chemical-Specific SF o Oral Slope Factor (mg/kg-d) -1 Illinois EPA:  http://www.epa.state.il.us/land/taco/toxicity-values.xls Toxicological-Specific T Exposure Interval s Residential = 9.5 • 10 8 Industrial/Commercial = 7.9 • 10 8 Construction Worker = 3.6 • 10 6 T M-L Exposure Interval for Mass-Limit Volatilization Factor Equation S26 yr SSL 30 THQ Target Hazard Quotient unitless SSL 1 TR Target Cancer Risk unitless Residential = 10 -6 at the point of human exposure Industrial/Commercial = 10 -6 at the point of human exposure Construction Worker = 10 -6 at the point of human exposure U m Mean Annual Windspeed m/s SSL 4.69 URF Inhalation Unit Risk Factor (μg/m 3 ) -1 Illinois EPA:  http://www.epa.state.il.us/land/taco/toxicity-values.xls Toxicological-Specific U t Equivalent Threshold Value of Windspeed at 7 m m/s SSL 11.32 V Fraction of Vegetative Cover unitless SSL or Field Measurement 0.5 of Site-Specific VF Volatilization Factor m 3 /kg Equation S8 in Appendix C, Table A Calculated Value VF′ Volatilization Factor adjusted for Agitation m 3 /kg Equation S9 in Appendix C, Table A Calculated Value VF M-L Mass-Limit Volatilization Factor m 3 /kg Equation S26 in Appendix C, Table A Calculated Value VF′ M-L Mass-Limit Volatilization Factor adjusted for Agitation m 3 /kg Equation S27 in Appendix C, Table A Calculated Value η Total Soil Porosity L pore /L soil SSL or Equation S24 in Appendix C, Table A 0.43, or Gravel = 0.25 Sand = 0.32 Silt = 0.40 Clay = 0.36, or Calculated Value θ a Air-Filled Soil Porosity L air /L soil SSL or Equation S21 in Appendix C, Table A Surface Soil (top 1 meter) = 0.28 Subsurface Soil (below 1 meter) = 0.13, or Gravel = 0.05 Sand = 0.14 Silt = 0.24 Clay = 0.19, or Calculated Value θ w Water-Filled Soil Porosity L water /L soil SSL or Equation S20 in Appendix C, Table A Surface Soil (top 1 meter) = 0.15 Subsurface Soil (below 1 meter) = 0.30, or Gravel = 0.20 Sand = 0.18 Silt = 0.16 Clay = 0.17, or Calculated Value ρ b Dry Soil Bulk Density kg/L or g/cm 3 SSL or Field Measurement (See Appendix C, Table F) 1.5, or Gravel = 2.0 Sand = 1.8 Silt = 1.6 Clay = 1.7, or Site-Specific ρ s Soil Particle Density g/cm 3 SSL or Field Measurement (See Appendix C, Table F) 2.65, or Site-Specific ρ w Water Density g/cm 3 SSL 1 1/(2b+3) Exponential in Equation S20 unitless Appendix C, Table K Appendix C, Illustration C Site-Specific