GLOUCESTER
COUNTY
Gloucester
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 |
3 |
0.1% |
12% |
52% |
36% |
0% |
Acrolein |
0.14 |
0.02 |
7 |
0.04% |
9% |
47% |
45% |
0% |
Acrylonitrile |
0.00085 |
0.015 |
0.06 |
35% |
65% |
0% |
0% |
0% |
Arsenic
compounds |
0.00030 |
0.00023 |
1 |
26% |
49% |
0.2% |
24% |
0% |
Benzene |
1.7 |
0.13 |
13 |
21% |
3% |
35% |
12% |
28% |
Beryllium
compounds |
0.000031 |
0.00042 |
0.07 |
17% |
80% |
0% |
2% |
0% |
1,3-Butadiene |
0.050 |
0.0036 |
14 |
0.02% |
2% |
71% |
27% |
0% |
Cadmium
compounds |
0.00059 |
0.00029 |
2 |
9% |
89% |
0% |
2% |
0% |
Carbon
tetrachloride |
0.88 |
0.067 |
13 |
0.0001% |
0.1% |
0% |
0% |
100% |
Chloroform |
0.092 |
0.043 |
2 |
4% |
6% |
0% |
0% |
91% |
Chromium
compounds |
0.0035 |
0.00025 |
14 |
9% |
76% |
1% |
14% |
0% |
Coke
oven emissions |
0 |
0.0016 |
0 |
0% |
0% |
0% |
0% |
0% |
1,3-Dichloropropene |
0.086 |
0.25 |
0.3 |
0% |
100% |
0% |
0% |
0% |
Diesel
particulate matter |
3.0 |
0.5 |
6 |
0% |
0% |
29% |
71% |
*** |
Ethylene
dibromide |
0.0077 |
0.0045 |
2 |
0.002% |
0.01% |
0% |
0% |
100% |
Ethylene
dichloride |
0.077 |
0.038 |
2 |
21% |
0.2% |
0% |
0% |
79% |
Ethylene
oxide |
0.0046 |
0.011 |
0.4 |
1% |
99% |
0% |
0% |
0% |
Formaldehyde |
1.5 |
0.077 |
20 |
1% |
7% |
34% |
43% |
17% |
Hexachlorobenzene |
0.000093 |
0.0022 |
0.04 |
0% |
0.3% |
0% |
0% |
100% |
Hydrazine |
0.00000017 |
0.0002 |
0.001 |
4% |
95% |
0% |
0% |
0% |
Lead
compounds |
0.014 |
0.1 |
0.1 |
2% |
39% |
0.4% |
59% |
0% |
Manganese
compounds |
0.0028 |
0.05 |
0.06 |
14% |
70% |
1% |
15% |
0% |
Mercury
compounds |
0.0028 |
0.3 |
0.01 |
7% |
39% |
0.02% |
1% |
53% |
Methylene
chloride |
0.39 |
2.1 |
0.2 |
4% |
58% |
0% |
0% |
38% |
Nickel
compounds |
0.0046 |
0.0032 |
1 |
19% |
22% |
1% |
58% |
0% |
Perchloroethylene |
0.25 |
0.17 |
1 |
0.2% |
44% |
0% |
0% |
56% |
Polychlorinated
biphenyls |
0.00038 |
0.01 |
0.04 |
0% |
1% |
0% |
0% |
99% |
Polycyclic
organic matter |
0.11 |
0.018 |
6 |
36% |
63% |
0.3% |
0.1% |
0% |
7-PAH |
0.0038 |
0.0051 |
0.8 |
0.1% |
96% |
4% |
1% |
0% |
Propylene
dichloride |
0.000050 |
0.053 |
0.001 |
33% |
67% |
0% |
0% |
0% |
Quinoline |
0.00000093 |
0.00029 |
0.003 |
0% |
100% |
0% |
0% |
0% |
1,1,2,2-Tetrachloroethane |
0.00030 |
0.017 |
0.02 |
49% |
51% |
0% |
0% |
0% |
Trichloroethylene |
0.14 |
0.5 |
0.3 |
15% |
26% |
0% |
0% |
60% |
Vinyl
chloride |
0.017 |
0.11 |
0.1 |
96% |
4% |
0% |
0% |
0% |
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