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HUDSON COUNTY

Hudson County Average 2014 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 Sources Nonpoint Sources Onroad Mobile Nonroad Mobile

Background& Secondary

0.083 0.033 2.5 0% 12% 63% 25% 0%
1.09 0.45 2.4 0% 5% 14% 7% 74%*
0.78 0.13 6 1% 19% 56% 23% 1%
0.55 0.17 3.2 0% 0% 0% 0% 100%
0.000049 0.000083 0.59 45% 24% 1% 30% 0%
1.5 0.0033 454 0% 0% 47% 53% 0%
0.00017 0.00043 0.39 74% 26% 0% 0% 0%
1.4 0.077 18 3% 6% 12% 12% 67%*
0.0000038 0.0002 0.019 100% 0% 0% 0% 0%
0.06 0.029 2 2% 32% 48% 16% 2%
21% 28% 2% 49% 0%
0.000001 0.025 0.00004 64% 36% 0% 0% 0%
0.03 0.17 0.17 6% 94% 0% 0% 0%
0.0003 0.11 0.002 98% 2% 0% 0% 0%












  • Chemicals with risk ratios greater than or equal to 1 are in bold.
    Risk Ratios based on noncarcinogenic effects are in italics.
    The symbol ug/m3 is micrograms per cubic meter, the amount (in micrograms) of a chemical in a cubic meter of air. This is also known as a concentration.
    For diesel particulate matter, onroad and nonroad concentrations include a model-estimated background concentration.
    *Acetaldehyde, acrolein and formaldehyde concentration estimates include secondary formation, which is the process by which chemicals in the air are transformed into other chemicals.
    **PAH/POM is "polycyclic aromatic hydrocarbons/polycyclic organic matter." These define a broad class of compounds. The chemicals making up this class were broken up into 8 groups based on toxicity, and each group was assigned a cancer-weighted toxicity estimate. 0.0072 ug/m3 is the health benchmark average across the 8 groups.


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