Hudson County Average 2002 NATA Modeled Air Concentrations Compared to Health Benchmarks
Pollutant
Modeled
Air Concentration (ug/m3)
Health
Benchmark (ug/m3)
Risk
Ratio
%
Contribution from
Major Sources
Area
Sources
On-road
Mobile Sources
Nonroad
Mobile Sources
Background
Acetaldehyde
3
0.45
7
0.07%
7%
47%
16%
30%
Acrolein
0.2
0.020
11
1%
18%
61%
20%
0%
Arsenic Compounds
0.0008
0.00023
3
4%
27%
10%
14%
45%
Benzene
3
0.13
23
1%
19%
46%
16%
18%
1,3-Butadiene
0.2
0.033
5
2%
0.06%
52%
24%
22%
Cadmium Compounds
0.0002
0.00024
0.9
8%
68%
0%
2%
22%
Carbon Tetrachloride
0.6
0.067
9
0.0007%
1%
0%
0%
99%
Chloroform
0.2
0.043
5
1%
71%
0%
0%
28%
Chromium (hexavalent form)
0.0003
0.000083
4
16%
39%
10%
2%
33%
1,4-Dichlorobenzene
0.2
0.091
2
0.4%
78%
0%
0%
22%
1,3-Dichloropropene
0.4
0.25
1.4
0.00005%
100%
0%
0%
0%
Diesel Particulate Matter
3
0.0033
923
0%
0%
21%
79%
*
Ethylbenzene
1
0.4
3
1%
40%
43%
16%
0%
Ethylene Oxide
0.02
0.011
2
50%
14%
0%
0%
36%
Formaldehyde
3
0.077
39
1%
4%
31%
22%
42%
Methyl Chloride
1
0.56
2
0.07%
1%
0%
0%
99%
Methyl tert-butyl ether
4
3.8
1.2
1%
10%
40%
49%
0%
Naphthalene
0.3
0.029
10
2%
74%
10%
3%
11%
PAH/POM
0.02
0.0075
3
5%
64%
17%
14%
0%
Perchloroethylene
0.5
0.17
3
1%
87%
0%
0%
13%
1,1,2-Trichloroethane
5.1E-6
0.063
8.0E-5
38%
62%
0%
0%
0%
Chemicals with risk ratios greater than or equal to 1 are
in bold.
Risk Ratios in italics are based on noncarcinogenic effects.
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.
