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UNION COUNTY

Union County Average 1996 NATA Modeled Air Concentrations Compared to Health Benchmarks
Pollutant Modeled Air Concentration (ug/m3) Health Benchmark (ug/m3) Risk Ratio % Contribution by Source Category
Point Area Onroad Mobile Nonroad Mobile Background
Acetaldehyde 1.6 0.45 4 0.1% 12% 45% 43% 0%
Acrolein 0.21 0.02 10 0.02% 8% 42% 50% 0%
Acrylonitrile 0.0029 0.015 0.2 80% 20% 0% 0% 0%
Arsenic compounds 0.00011 0.00023 0.5 12% 87% 1% 0.1% 0%
Benzene 1.8 0.13 14 7% 4% 41% 21% 26%
Beryllium compounds 0.000025 0.00042 0.06 2% 98% 0% 0.0002% 0%
1,3-Butadiene 0.087 0.0036 24 0.03% 0.3% 74% 25% 0%
Cadmium compounds 0.00017 0.00029 0.6 10% 90% 0% 0.0005% 0%
Carbon tetrachloride 0.88 0.067 13 0.001% 0.1% 0% 0% 100%
Chloroform 0.095 0.043 2 0.5% 12% 0% 0% 87%
Chromium compounds 0.0037 0.00025 15 5% 86% 2% 7% 0%
Coke oven emissions 0 0.0016 0 0% 0% 0% 0% 0%
1,3-Dichloropropene 0.18 0.25 0.7 0% 100% 0% 0% 0%
Diesel particulate matter 4.4 0.5 9 0% 0% 24% 76% ***
Ethylene dibromide 0.0077 0.0045 2 0.02% 0.03% 0% 0% 100%
Ethylene dichloride 0.063 0.038 2 2% 1% 0% 0% 97%
Ethylene oxide 0.0072 0.011 0.7 17% 83% 0% 0% 0%
Formaldehyde 2.3 0.077 30 0.4% 7% 28% 53% 11%
Hexachlorobenzene 0.000093 0.0022 0.04 0% 0.3% 0% 0% 100%
Hydrazine 0.00013 0.0002 0.7 57% 43% 0% 0% 0%
Lead compounds 0.018 0.1 0.2 1% 25% 1% 73% 0%
Manganese compounds 0.0033 0.05 0.07 3% 88% 1% 8% 0%
Mercury compounds 0.0028 0.3 0.01 3% 41% 0.04% 3% 53%
Methylene chloride 0.72 2.1 0.3 8% 71% 0% 0% 21%
Nickel compounds 0.0035 0.0032 1 9% 86% 2% 3% 0%
Perchloroethylene 0.39 0.17 2 4% 61% 0% 0% 36%
Polychlorinated biphenyls 0.00038 0.01 0.04 0% 0.002% 0% 0% 100%
Polycyclic organic matter 0.16 0.018 9 10% 90% 0.2% 0.1% 0%
7-PAH 0.0079 0.0051 2 0.04% 98% 2% 0.3% 0%
Propylene dichloride 0.00019 0.053 0.004 75% 25% 0% 0% 0%
Quinoline 0.0000031 0.00029 0.01 0% 100% 0% 0% 0%
1,1,2,2-Tetrachloroethane 0.0014 0.017 0.08 96% 4% 0% 0% 0%
Trichloroethylene 0.17 0.5 0.3 10% 42% 0% 0% 48%
Vinyl chloride 0.0037 0.11 0.03 86% 14% 0% 0% 0%

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Last Updated: March 18, 2011