UNION
COUNTY
Union
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 |
1.6 |
0.45 |
4 |
0.1% |
12% |
45% |
43% |
0% |
Acrolein |
0.21 |
0.02 |
10 |
0.02% |
8% |
42% |
50% |
0% |
Acrylonitrile |
0.0029 |
0.015 |
0.2 |
80% |
20% |
0% |
0% |
0% |
Arsenic
compounds |
0.00011 |
0.00023 |
0.5 |
12% |
87% |
1% |
0.1% |
0% |
Benzene |
1.8 |
0.13 |
14 |
7% |
4% |
41% |
21% |
26% |
Beryllium
compounds |
0.000025 |
0.00042 |
0.06 |
2% |
98% |
0% |
0.0002% |
0% |
1,3-Butadiene |
0.087 |
0.0036 |
24 |
0.03% |
0.3% |
74% |
25% |
0% |
Cadmium
compounds |
0.00017 |
0.00029 |
0.6 |
10% |
90% |
0% |
0.0005% |
0% |
Carbon
tetrachloride |
0.88 |
0.067 |
13 |
0.001% |
0.1% |
0% |
0% |
100% |
Chloroform |
0.095 |
0.043 |
2 |
0.5% |
12% |
0% |
0% |
87% |
Chromium
compounds |
0.0037 |
0.00025 |
15 |
5% |
86% |
2% |
7% |
0% |
Coke
oven emissions |
0 |
0.0016 |
0 |
0% |
0% |
0% |
0% |
0% |
1,3-Dichloropropene |
0.18 |
0.25 |
0.7 |
0% |
100% |
0% |
0% |
0% |
Diesel
particulate matter |
4.4 |
0.5 |
9 |
0% |
0% |
24% |
76% |
*** |
Ethylene
dibromide |
0.0077 |
0.0045 |
2 |
0.02% |
0.03% |
0% |
0% |
100% |
Ethylene
dichloride |
0.063 |
0.038 |
2 |
2% |
1% |
0% |
0% |
97% |
Ethylene
oxide |
0.0072 |
0.011 |
0.7 |
17% |
83% |
0% |
0% |
0% |
Formaldehyde |
2.3 |
0.077 |
30 |
0.4% |
7% |
28% |
53% |
11% |
Hexachlorobenzene |
0.000093 |
0.0022 |
0.04 |
0% |
0.3% |
0% |
0% |
100% |
Hydrazine |
0.00013 |
0.0002 |
0.7 |
57% |
43% |
0% |
0% |
0% |
Lead
compounds |
0.018 |
0.1 |
0.2 |
1% |
25% |
1% |
73% |
0% |
Manganese
compounds |
0.0033 |
0.05 |
0.07 |
3% |
88% |
1% |
8% |
0% |
Mercury
compounds |
0.0028 |
0.3 |
0.01 |
3% |
41% |
0.04% |
3% |
53% |
Methylene
chloride |
0.72 |
2.1 |
0.3 |
8% |
71% |
0% |
0% |
21% |
Nickel
compounds |
0.0035 |
0.0032 |
1 |
9% |
86% |
2% |
3% |
0% |
Perchloroethylene |
0.39 |
0.17 |
2 |
4% |
61% |
0% |
0% |
36% |
Polychlorinated
biphenyls |
0.00038 |
0.01 |
0.04 |
0% |
0.002% |
0% |
0% |
100% |
Polycyclic
organic matter |
0.16 |
0.018 |
9 |
10% |
90% |
0.2% |
0.1% |
0% |
7-PAH |
0.0079 |
0.0051 |
2 |
0.04% |
98% |
2% |
0.3% |
0% |
Propylene
dichloride |
0.00019 |
0.053 |
0.004 |
75% |
25% |
0% |
0% |
0% |
Quinoline |
0.0000031 |
0.00029 |
0.01 |
0% |
100% |
0% |
0% |
0% |
1,1,2,2-Tetrachloroethane |
0.0014 |
0.017 |
0.08 |
96% |
4% |
0% |
0% |
0% |
Trichloroethylene |
0.17 |
0.5 |
0.3 |
10% |
42% |
0% |
0% |
48% |
Vinyl
chloride |
0.0037 |
0.11 |
0.03 |
86% |
14% |
0% |
0% |
0% |
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