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State of New Jersey Department of Environmental Protection
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MIDDLESEX COUNTY

Middlesex 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 1.1 0.45 2 0.02% 12% 50% 37% 0%
Acrolein 0.14 0.02 7 0.01% 8% 53% 38% 0%
Acrylonitrile 0.0033 0.015 0.2 85% 15% 0% 0% 0%
Arsenic compounds 0.000078 0.00023 0.3 12% 87% 1% 0.05% 0%
Benzene 1.4 0.13 11 4% 3% 39% 20% 34%
Beryllium compounds 0.000017 0.00042 0.04 2% 98% 0% 0.0001% 0%
1,3-Butadiene 0.052 0.0036 15 0.01% 1% 83% 16% 0%
Cadmium compounds 0.00014 0.00029 0.5 5% 95% 0% 0.0002% 0%
Carbon tetrachloride 0.88 0.067 13 0.001% 0.1% 0% 0% 100%
Chloroform 0.11 0.043 2 1% 22% 0% 0% 78%
Chromium compounds 0.0015 0.00025 6 19% 67% 4% 10% 0%
Coke oven emissions 0 0.0016 0 0% 0% 0% 0% 0%
1,3-Dichloropropene 0.12 0.25 0.5 0% 100% 0% 0% 0%
Diesel particulate matter 3.7 0.5 7 0% 0% 27% 73% ***
Ethylene dibromide 0.0077 0.0045 2 0.02% 0.03% 0% 0% 100%
Ethylene dichloride 0.062 0.038 2 1% 0.2% 0% 0% 99%
Ethylene oxide 0.015 0.011 1 50% 50% 0% 0% 0%
Formaldehyde 1.5 0.077 20 0.4% 6% 31% 46% 16%
Hexachlorobenzene 0.000093 0.0022 0.04 0% 0.2% 0% 0% 100%
Hydrazine 0.00020 0.0002 1 97% 4% 0% 0% 0%
Lead compounds 0.0092 0.1 0.09 1% 64% 1% 34% 0%
Manganese compounds 0.0043 0.05 0.09 1% 95% 1% 4% 0%
Mercury compounds 0.0024 0.3 0.01 2% 33% 0.04% 2% 63%
Methylene chloride 0.55 2.1 0.3 7% 66% 0% 0% 27%
Nickel compounds 0.0031 0.0032 1 2% 94% 2% 2% 0%
Perchloroethylene 0.29 0.17 2 3% 47% 0% 0% 49%
Polychlorinated biphenyls 0.00038 0.01 0.04 0% 0.002% 0% 0% 100%
Polycyclic organic matter 0.11 0.018 6 7% 93% 0.3% 0.1% 0%
7-PAH 0.0052 0.0051 1 0.04% 97% 3% 0.3% 0%
Propylene dichloride 0.00021 0.053 0.004 81% 18% 0% 0% 0%
Quinoline 0.0000029 0.00029 0.01 0% 100% 0% 0% 0%
1,1,2,2-Tetrachloroethane 0.0016 0.017 0.09 96% 4% 0% 0% 0%
Trichloroethylene 0.15 0.5 0.3 6% 38% 0% 0% 56%

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Last Updated: March 18, 2011