SUSSEX
COUNTY
| Sussex
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 |
0.33 |
0.45 |
0.7 |
0.003% |
7% |
62% |
30% |
0% |
| Acrolein |
0.045 |
0.02 |
2 |
0.004% |
16% |
56% |
28% |
0% |
| Acrylonitrile |
0.00037 |
0.015 |
0.02 |
28% |
72% |
0% |
0% |
0% |
| Arsenic
compounds |
0.000025 |
0.00023 |
0.1 |
16% |
83% |
1% |
0.04% |
0% |
| Benzene |
0.80 |
0.13 |
6 |
0.1% |
2% |
24% |
14% |
60% |
| Beryllium
compounds |
0.0000044 |
0.00042 |
0.01 |
5% |
95% |
0% |
0% |
0% |
| 1,3-Butadiene |
0.017 |
0.0036 |
5 |
0.00005% |
2% |
84% |
14% |
0% |
| Cadmium
compounds |
0.00010 |
0.00029 |
0.3 |
1% |
99% |
0% |
0% |
0% |
| Carbon
tetrachloride |
0.88 |
0.067 |
13 |
0.00002% |
0.02% |
0% |
0% |
100% |
| Chloroform |
0.15 |
0.043 |
3 |
44% |
1% |
0% |
0% |
56% |
| Chromium
compounds |
0.00029 |
0.00025 |
1 |
3% |
78% |
7% |
12% |
0% |
| Coke
oven emissions |
0.000078 |
0.0016 |
0.05 |
100% |
0% |
0% |
0% |
0% |
| 1,3-Dichloropropene |
0.037 |
0.25 |
0.1 |
0% |
100% |
0% |
0% |
0% |
| Diesel
particulate matter |
2.4 |
0.5 |
5 |
0% |
0% |
35% |
65% |
*** |
| Ethylene
dibromide |
0.0077 |
0.0045 |
2 |
0.001% |
0.004% |
0% |
0% |
100% |
| Ethylene
dichloride |
0.061 |
0.038 |
2 |
0.1% |
0.1% |
0% |
0% |
100% |
| Ethylene
oxide |
0.0013 |
0.011 |
0.1 |
0% |
100% |
0% |
0% |
0% |
| Formaldehyde |
0.65 |
0.077 |
8 |
0.1% |
6% |
29% |
26% |
39% |
| Hexachlorobenzene |
0.000093 |
0.0022 |
0.04 |
0% |
0.02% |
0% |
0% |
100% |
| Hydrazine |
0.00000088 |
0.0002 |
0.004 |
33% |
67% |
0% |
0% |
0% |
| Lead
compounds |
0.00062 |
0.1 |
0.01 |
2% |
87% |
4% |
6% |
0% |
| Manganese
compounds |
0.00055 |
0.05 |
0.01 |
1% |
90% |
1% |
7% |
0% |
| Mercury
compounds |
0.0017 |
0.3 |
0.01 |
0.2% |
9% |
0.02% |
1% |
90% |
| Methylene
chloride |
0.26 |
2.1 |
0.1 |
4% |
39% |
0% |
0% |
57% |
| Nickel
compounds |
0.00073 |
0.0032 |
0.2 |
4% |
91% |
2% |
2% |
0% |
| Perchloroethylene |
0.17 |
0.17 |
1 |
1% |
19% |
0% |
0% |
80% |
| Polychlorinated
biphenyls |
0.00038 |
0.01 |
0.04 |
0% |
0.001% |
0% |
0% |
100% |
| Polycyclic
organic matter |
0.029 |
0.018 |
2 |
0.1% |
99% |
0.5% |
0.1% |
0% |
| 7-PAH |
0.0017 |
0.0051 |
0.3 |
0.001% |
95% |
4% |
1% |
0% |
| Propylene
dichloride |
0.000023 |
0.053 |
0.0004 |
27% |
73% |
0% |
0% |
0% |
| Quinoline |
0.00000025 |
0.00029 |
0.001 |
0% |
100% |
0% |
0% |
0% |
| 1,1,2,2-Tetrachloroethane |
0.00017 |
0.017 |
0.01 |
33% |
66% |
0% |
0% |
0% |
| Trichloroethylene |
0.12 |
0.5 |
0.2 |
2% |
31% |
0% |
0% |
66% |
| Vinyl
chloride |
0.00044 |
0.11 |
0.004 |
33% |
67% |
0% |
0% |
0% |
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