New
Jersey Statewide Average 2002 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
2
0.45
5
0.04%
4%
40%
10%
46%
Acrolein
0.1
0.020
5
0.2%
14%
66%
20%
0%
Arsenic Compounds
0.0005
0.00023
2
3%
12%
7%
7%
71%
Benzene
2
0.13
13
1%
13%
40%
13%
33%
1,3-Butadiene
0.1
0.033
3
1%
0.04%
44%
19%
36%
Cadmium Compounds
0.0001
0.00024
0.5
12%
44%
0%
1%
43%
Carbon Tetrachloride
0.6
0.067
9
0.0005%
0.2%
0%
0%
99.8%
Chloroform
0.1
0.043
3
0.4%
54%
0%
0%
46%
Chromium (hexavalent form)
0.0002
0.000083
3
24%
17%
8%
1%
50%
1,4-Dichlorobenzene
0.1
0.091
1.3
0.3%
58%
0%
0%
42%
1,3-Dichloropropene
0.1
0.25
0.5
0.0002%
100%
0%
0%
0%
Diesel Particulate Matter
2
0.0033
475
0%
0%
28%
72%
*
Ethylbenzene
0.5
0.40
1.2
1%
21%
56%
22%
0%
Ethylene Oxide
0.01
0.011
1
17%
17%
0%
0%
66%
Formaldehyde
2
0.077
28
0.3%
3%
25%
13%
59%
Methyl Chloride
1
0.56
2
0.05%
1%
0%
0%
99%
Methyl tert-butyl ether
2
3.8
0.6
1%
12%
39%
48%
0%
Naphthalene
0.1
0.029
4
2%
57%
13%
3%
25%
PAH/POM
0.01
0.0075
1.7
4%
74%
13%
9%
0%
Perchloroethylene
0.2
0.17
1.5
0.5%
61%
0%
0%
39%
1,1,2-Trichloroethane
0.007
0.063
0.1
0.01%
100%
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.
