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GLOUCESTER
COUNTY
| Gloucester County Average 1999 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 |
2 |
0.45 |
4 |
4% |
3% |
48% |
13% |
31% |
| Acrolein |
0.1 |
0.020 |
5 |
1% |
17% |
55% |
27% |
0% |
| Arsenic Compounds |
0.0003 |
0.00023 |
1.3 |
88% |
12% |
0% |
0% |
0% |
| Benzene |
1 |
0.13 |
9 |
6% |
5% |
42% |
14% |
33% |
| Bis(2-ethylhexyl)phthalate |
2 |
0.42 |
4 |
0.002% |
0.1% |
0% |
0% |
100% |
| 1,3-Butadiene |
0.09 |
0.033 |
3 |
1% |
1% |
36% |
17% |
45% |
| Cadmium Compounds |
0.0001 |
0.00024 |
0.5 |
69% |
29% |
0% |
2% |
0% |
| Carbon Tetrachloride |
0.3 |
0.067 |
4 |
0.6% |
0.2% |
0% |
0% |
99% |
| Chloroform |
0.07 |
0.043 |
1.7 |
5% |
40% |
0% |
0% |
55% |
| Chromium (hexavalent form) |
0.0002 |
0.000083 |
3 |
19% |
76% |
4% |
0.8% |
0% |
| 1,4-Dichlorobenzene |
0.04 |
0.091 |
0.4 |
3% |
97% |
0% |
0% |
0% |
| 1,3-Dichloropropene |
0.07 |
0.25 |
0.3 |
0.002% |
100% |
0% |
0% |
0% |
| Diesel Particulate Matter |
2 |
0.0033 |
607 |
0% |
0% |
31% |
69% |
* |
| Ethylene Dibromide |
0.02 |
0.0017 |
13 |
0.05% |
0.004% |
0% |
0% |
100% |
| Ethylene Dichloride |
0.04 |
0.038 |
1 |
9% |
2% |
0% |
0% |
90% |
| Ethylene Oxide |
0.005 |
0.011 |
0.4 |
12% |
88% |
0% |
0% |
0% |
| Formaldehyde |
2 |
0.077 |
22 |
2% |
5% |
30% |
19% |
44% |
| Methyl Chloride |
1 |
0.56 |
2 |
1% |
0.5% |
0% |
0% |
99% |
| Naphthalene |
0.06 |
0.029 |
2 |
16% |
53% |
21% |
10% |
0% |
| Nickel Compounds |
0.007 |
0.0064 |
1 |
82% |
10% |
1% |
7% |
0% |
| Perchloroethylene |
0.2 |
0.17 |
0.9 |
0.1% |
41% |
0% |
0% |
59% |
| 1,1,2,2-Tetrachloroethane |
0.05 |
0.017 |
3 |
0.02% |
0.6% |
0% |
0% |
99% |
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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. |
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