# 1 

# Appendix 11 :

Environmental Risk ScreenTable 1 – PB-HAP Benchmarks Included in the Environmental Risk ScreenEco HAP Assessment EndpointBenchmark Effects LevelBenchmark ValueBenchmarkSourceCadmium Fish - Avian Piscivores NOAEL (merganser)0.7 (mg/kg BW/day)dCadmium Fish - Avian Piscivores LOAEL (merganser)1 (mg/kg BW/day)dCadmium Fish - Mammalian Piscivores NOAEL (mink)0.742 (mg/kg BW/day)eCadmium Fish - Mammalian Piscivores LOAEL (mink)7.42 (mg/kg BW/day)eCadmium Sediment CommunityNo-effect Level0.6 (mg/kg dry wt)bCadmium Sediment CommunityThreshold Level1.2 (mg/kg dry wt)aCadmium Sediment CommunityProbable-effect Level3.5 (mg/kg dry wt)bCadmium Surface Soil - Dist. 1 - 312 m Threshold - Mammalian Insectivores (shrew) 0.36 (mg/kg dry wt)aCadmium Surface Soil - Dist. 1 - 312 mThreshold - Avian Ground Insectivores(woodcock)0.77 (mg/kg dry wt)aCadmium Surface Soil - Dist. 1 - 312 m Threshold Level - Plant Community32 (mg/kg dry wt)aCadmium Surface Soil - Dist. 1 - 312 m Threshold Level - Invertebrate Community 140 (mg/kg dry wt)aCadmium Surface Soil - Dist. 2 - 850 m Threshold - Mammalian Insectivores (shrew) 0.36 (mg/kg dry wt)aCadmium Surface Soil - Dist. 2 - 850 mThreshold - Avian Ground Insectivores(woodcock)0.77 (mg/kg dry wt)aCadmium Surface Soil - Dist. 2 - 850 m Threshold Level - Plant Community32 (mg/kg dry wt)aCadmium Surface Soil - Dist. 2 - 850 m Threshold Level - Invertebrate Community 140 (mg/kg dry wt)aCadmium Surface Soil - Dist. 3 - 1,500 m Threshold - Mammalian Insectivores (shrew) 0.36 (mg/kg dry wt)aCadmium Surface Soil - Dist. 3 - 1,500 mThreshold - Avian Ground Insectivores(woodcock)0.77 (mg/kg dry wt)aCadmium Surface Soil - Dist. 3 - 1,500 m Threshold Level - Plant Community32 (mg/kg dry wt)aCadmium Surface Soil - Dist. 3 - 1,500 m Threshold Level - Invertebrate Community 140 (mg/kg dry wt)aCadmium Surface Soil - Dist. 4 - 3,500 m Threshold - Mammalian Insectivores (shrew) 0.36 (mg/kg dry wt)aCadmium Surface Soil - Dist. 4 - 3,500 mThreshold - Avian Ground Insectivores(woodcock)0.77 (mg/kg dry wt)aCadmium Surface Soil - Dist. 4 - 3,500 m Threshold Level - Plant Community32 (mg/kg dry wt)aCadmium Surface Soil - Dist. 4 - 3,500 m Threshold Level - Invertebrate Community 140 (mg/kg dry wt)aCadmium Surface Soil - Dist. 5 - 7,500 m Threshold - Mammalian Insectivores (shrew) 0.36 (mg/kg dry wt)aCadmium Surface Soil - Dist. 5 - 7,500 mThreshold - Avian Ground Insectivores(woodcock)0.77 (mg/kg dry wt)aCadmium Surface Soil - Dist. 5 - 7,500 m Threshold Level - Plant Community32 (mg/kg dry wt)aCadmium Surface Soil - Dist. 5 - 7,500 m Threshold Level - Invertebrate Community 140 (mg/kg dry wt)aTable 1 – PB-HAP Benchmarks Included in the Environmental Risk ScreenEco HAP Assessment EndpointBenchmark Effects LevelBenchmark ValueBenchmarkSourceCadmium Water-column Community Threshold Level0.25 (ug/L)cCadmium Water-column Community Frank-effect Level2 (ug/L)cDioxin Fish - Avian Piscivores NOAEL (merganser)0.0000014 (mg/kg BW/day) fDioxin Fish - Avian Piscivores LOAEL (merganser)0.000014 (mg/kg BW/day) fDioxin Fish - Mammalian Piscivores NOAEL (mink)0.000000771 (mg/kg BW/day) fDioxin Fish - Mammalian Piscivores LOAEL (mink)0.00000771 (mg/kg BW/day) fDioxin Sediment CommunityThreshold Level0.00000116 (mg/kg dry wt) gDioxin Surface Soil - Dist. 1 - 312 m Threshold - Mammalian Insectivores (shrew) 0.0000002 (mg/kg dry wt)hDioxin Surface Soil - Dist. 2 - 850 m Threshold - Mammalian Insectivores (shrew) 0.0000002 (mg/kg dry wt)hDioxin Surface Soil - Dist. 3 - 1,500 m Threshold - Mammalian Insectivores (shrew) 0.0000002 (mg/kg dry wt)hDioxin Surface Soil - Dist. 4 - 3,500 m Threshold - Mammalian Insectivores (shrew) 0.0000002 (mg/kg dry wt)hDioxin Surface Soil - Dist. 5 - 7,500 m Threshold - Mammalian Insectivores (shrew) 0.0000002 (mg/kg dry wt)hDioxin Water-column Community Threshold Level0.000012 (ug/L)iDioxin Water-column Community Frank-effect Level0.1 (ug/L)iMercuricChloride Sediment CommunityThreshold Level0.15 (mg/kg dry wt)aMercuricChloride Sediment CommunityProbable-effect Level0.7 (mg/kg dry wt)jMercuricChloride Surface Soil - Dist. 1 - 312 m Threshold Level - Plant Community0.3 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 1 - 312 m Threshold Level - Invertebrate Community 0.1 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 2 - 850 m Threshold Level - Plant Community0.3 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 2 - 850 m Threshold Level - Invertebrate Community 0.1 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 3 - 1,500 m Threshold Level - Plant Community0.3 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 3 - 1,500 m Threshold Level - Invertebrate Community 0.1 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 4 - 3,500 m Threshold Level - Plant Community0.3 (mg/kg dry wt)kTable 1 – PB-HAP Benchmarks Included in the Environmental Risk ScreenEco HAP Assessment EndpointBenchmark Effects LevelBenchmark ValueBenchmarkSourceMercuricChloride Surface Soil - Dist. 4 - 3,500 m Threshold Level - Invertebrate Community 0.1 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 5 - 7,500 m Threshold Level - Plant Community0.3 (mg/kg dry wt)kMercuricChloride Surface Soil - Dist. 5 - 7,500 m Threshold Level - Invertebrate Community 0.1 (mg/kg dry wt)kMercuricChloride Water-column Community Threshold Level0.77 (ug/L)cMercuricChloride Water-column Community Frank-effect Level1.4 (ug/L)cMercury(methyl) Fish - Avian Piscivores NOAEL (merganser)0.013 (mg/kg BW/day)fMercury(methyl) Fish - Avian Piscivores LOAEL (merganser)0.078 (mg/kg BW/day)fMercury(methyl) Fish - Mammalian Piscivores NOAEL (mink)0.0247 (mg/kg BW/day)eMercury(methyl) Fish - Mammalian Piscivores LOAEL (mink)0.123 (mg/kg BW/day)eMercury(methyl) Sediment CommunityThreshold Level0.2 (mg/kg dry wt)lMercury(methyl) Sediment CommunityProbable-effect Level1 (mg/kg dry wt)lMercury(methyl) Surface Soil - Dist. 1 - 312 m Threshold Level - Invertebrate Community 0.67 (mg/kg dry wt)IMercury(methyl) Surface Soil - Dist. 2 - 850 m Threshold Level - Invertebrate Community 0.67 (mg/kg dry wt)iMercury(methyl) Surface Soil - Dist. 3 - 1,500 m Threshold Level - Invertebrate Community 0.67 (mg/kg dry wt)iMercury(methyl) Surface Soil - Dist. 4 - 3,500 m Threshold Level - Invertebrate Community 0.67 (mg/kg dry wt)iMercury(methyl) Surface Soil - Dist. 5 - 7,500 m Threshold Level - Invertebrate Community 0.67 (mg/kg dry wt)iTable 1 – PB-HAP Benchmarks Included in the Environmental Risk ScreenEco HAP Assessment EndpointBenchmark Effects LevelBenchmark ValueBenchmarkSourceMercury(methyl) Water-column Community Threshold Level 0.0028 (ug/L)cMercury(methyl) Water-column Community Frank-effect Level0.099 (ug/L)cPAH Fish - Mammalian Piscivores NOAEL (mink)0.417 (mg/kg BW/day)ePAH Fish - Mammalian Piscivores LOAEL (mink)4.17 (mg/kg BW/day)ePAH Sediment CommunityNo-effect Level0.032 (mg/kg dry wt)bPAH Sediment CommunityThreshold Level0.15 (mg/kg dry wt)l, hPAH Sediment CommunityProbable-effect Level1.45 (mg/kg dry wt)lPAH Surface Soil - Dist. 1 - 312 m Threshold - Mammalian Insectivores (shrew) 1.52 (mg/kg dry wt)hPAH Surface Soil - Dist. 2 - 850 m Threshold - Mammalian Insectivores (shrew) 1.52 (mg/kg dry wt)hPAH Surface Soil - Dist. 3 - 1,500 m Threshold - Mammalian Insectivores (shrew) 1.52 (mg/kg dry wt)hPAH Surface Soil - Dist. 4 - 3,500 m Threshold - Mammalian Insectivores (shrew) 1.52 (mg/kg dry wt)hPAH Surface Soil - Dist. 5 - 7,500 m Threshold - Mammalian Insectivores (shrew) 1.52 (mg/kg dry wt)hPAH Water-column Community Threshold Level0.014 (ug/L)a, h, mPAH Water-column Community Frank-effect Level0.24 (ug/L)aLead Ambient AirNAAQS Secondary Standard0.15 ug/m3nReferences:a. U.S. EPA OSWERb. Environment Canadac. U.S. EPA OWd. CA DTSC HERD (2009)e. Sample, et. al, 1996f. U.S. EPA 1995g. U.S. EPA Region 3, 4, and 5.h. U.S. EPA Regioni. U.S. EPA Region 4j. Florida DEP, NOAAk. ORNL and EPA R4, R6l. MacDonald, et. al. 2000m. U.S. EPA Region 6n. NAAQS for Lead, Secondary Standard

# Table 2 – Acid Gas Benchmarks Included in the Environmental Risk Screen

a - Note that the human health RfC is 20 μg/m3, which is lower than the ecological benchmark.



# A cid Gas Chronic 90-day Benchmark in μg/m3

Hydrochloric acid – LOEL 50 a



# Hydrofluoric acid – Plant Community LOEL 0.5

Hydrofluoric acid – Plant Community LOEL 0.4