MORRIS
COUNTY
Morris 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 |
1 |
0.45 |
3 |
0.7% |
4% |
48% |
10% |
38% |
Acrolein |
0.09 |
0.020 |
4 |
0.04% |
21% |
59% |
20% |
0% |
Arsenic Compounds |
0.00005 |
0.00023 |
0.2 |
17% |
83% |
0% |
0% |
0% |
Benzene |
1 |
0.13 |
9 |
0.09% |
5% |
40% |
18% |
37% |
Bis(2-ethylhexyl)phthalate |
2 |
0.42 |
4 |
0.02% |
0.004% |
0% |
0% |
100% |
1,3-Butadiene |
0.1 |
0.033 |
3 |
0.002% |
2% |
31% |
20% |
48% |
Cadmium Compounds |
0.00003 |
0.00024 |
0.1 |
8% |
92% |
0% |
0.5% |
0% |
Carbon Tetrachloride |
0.3 |
0.067 |
4 |
0.001% |
0.2% |
0% |
0% |
100% |
Chloroform |
0.08 |
0.043 |
1.8 |
4% |
45% |
0% |
0% |
51% |
Chromium (hexavalent form) |
0.00007 |
0.000083 |
0.8 |
6% |
82% |
12% |
0.7% |
0% |
1,4-Dichlorobenzene |
0.04 |
0.091 |
0.4 |
1% |
99% |
0% |
0% |
0% |
1,3-Dichloropropene |
0.07 |
0.25 |
0.3 |
0% |
100% |
0% |
0% |
0% |
Diesel Particulate Matter |
1 |
0.0033 |
442 |
0% |
0% |
46% |
54% |
* |
Ethylene Dibromide |
0.02 |
0.0017 |
15 |
0.01% |
0.007% |
0% |
0% |
100% |
Ethylene Dichloride |
0.04 |
0.038 |
1 |
0.4% |
0.2% |
0% |
0% |
99% |
Ethylene Oxide |
0.002 |
0.011 |
0.2 |
14% |
86% |
0% |
0% |
0% |
Formaldehyde |
1 |
0.077 |
19 |
0.5% |
4% |
30% |
12% |
53% |
Methyl Chloride |
1 |
0.56 |
2 |
0.007% |
0.3% |
0% |
0% |
100% |
Naphthalene |
0.04 |
0.029 |
1.5 |
0.2% |
65% |
26% |
8% |
0% |
Nickel Compounds |
0.002 |
0.0064 |
0.3 |
2% |
97% |
2% |
0.2% |
0% |
Perchloroethylene |
0.2 |
0.17 |
1 |
0.09% |
39% |
0% |
0% |
61% |
1,1,2,2-Tetrachloroethane |
0.06 |
0.017 |
3 |
0.05% |
0.2% |
0% |
0% |
100% |
|
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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