MORRIS
COUNTY
Morris County Average 2002 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 |
0.02% |
3% |
37% |
7% |
53% |
Acrolein |
0.07 |
0.020 |
4 |
0.2% |
9% |
70% |
21% |
0% |
Arsenic Compounds |
0.0005 |
0.00023 |
2 |
3% |
7% |
5% |
4% |
81% |
Benzene |
1 |
0.13 |
10 |
0.2% |
9% |
40% |
15% |
36% |
1,3-Butadiene |
0.09 |
0.033 |
3 |
0.5% |
0.009% |
38% |
19% |
43% |
Cadmium Compounds |
0.00009 |
0.00024 |
0.4 |
5% |
33% |
0% |
0.3% |
62% |
Carbon Tetrachloride |
0.6 |
0.067 |
9 |
0.0001% |
0.08% |
0% |
0% |
99.9% |
Chloroform |
0.1 |
0.043 |
2 |
0.07% |
38% |
0% |
0% |
62% |
Chromium (hexavalent form) |
0.0002 |
0.000083 |
3 |
8% |
4% |
4% |
1% |
83% |
1,4-Dichlorobenzene |
0.08 |
0.091 |
0.9 |
0.09% |
44% |
0% |
0% |
56% |
1,3-Dichloropropene |
0.07 |
0.25 |
0.3 |
0.00003% |
100% |
0% |
0% |
0% |
Diesel Particulate Matter |
1 |
0.0033 |
346 |
0% |
0% |
35% |
65% |
* |
Ethylbenzene |
0.3 |
0.4 |
0.8 |
0.6% |
9% |
61% |
30% |
0% |
Ethylene Oxide |
0.009 |
0.011 |
0.8 |
2% |
11% |
0% |
0% |
87% |
Formaldehyde |
2 |
0.077 |
22 |
0.1% |
3% |
23% |
9% |
65% |
Methyl Chloride |
1 |
0.56 |
2 |
0.007% |
0.3% |
0% |
0% |
99.7% |
Methyl tert-butyl ether |
2 |
3.8 |
0.4 |
0.1% |
11% |
35% |
54% |
0% |
Naphthalene |
0.07 |
0.029 |
3 |
3% |
39% |
14% |
3% |
41% |
PAH/POM |
0.01 |
0.0075 |
1.1 |
4% |
74% |
14% |
8% |
0% |
Perchloroethylene |
0.2 |
0.17 |
1 |
0.2% |
39% |
0% |
0% |
61% |
1,1,2-Trichloroethane |
8.1E-7 |
0.063 |
1.0E-5 |
46% |
54% |
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. |
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