|
MIDDLESEX
COUNTY
| CEP
Average Air Toxics Estimates for Middlesex County,
NJ in 1990 |
|
Contribution by Source Category |
| Pollutant
(HAP) |
Air
Concentration
ug/m3 |
Health
Benchmark
ug/m3 |
Risk
Ratio |
Point% |
Area% |
Mobile% |
Background% |
|
Acetaldehyde
|
0.95
|
0.45
|
2
|
10
|
39
|
52
|
----
|
|
Acrolein
*
|
0.29
|
0.02
|
14
|
----
|
61
|
39
|
----
|
|
Acrylamide
|
0.0000019
|
0.00077
|
0.002
|
100
|
----
|
----
|
----
|
|
Acrylonitrile
|
0.058
|
0.015
|
4
|
3
|
97
|
----
|
----
|
|
Arsenic
|
0.00056
|
0.00023
|
2
|
40
|
33
|
27
|
----
|
|
Benzene
|
2.9
|
0.12
|
24
|
9
|
32
|
42
|
17
|
|
Beryllium
|
0.000024
|
0.00042
|
0.1
|
53
|
42
|
4
|
----
|
|
1,3-Butadiene
|
0.12
|
0.0036
|
34
|
----
|
18
|
82
|
----
|
|
Cadmium
|
0.00080
|
0.00029
|
3
|
42
|
58
|
----
|
----
|
|
Carbon
tetrachloride
|
0.90
|
0.067
|
13
|
----
|
2
|
----
|
98
|
|
Chloroform
|
0.096
|
0.043
|
2
|
5
|
8
|
----
|
87
|
|
Chromium
|
0.0013
|
0.000083
|
15
|
50
|
34
|
17
|
----
|
|
p-Dichlorobenzene
|
0.29
|
0.091
|
3
|
----
|
100
|
----
|
----
|
|
1,3-Dichloropropene
|
0.069
|
0.027
|
3
|
----
|
100
|
----
|
----
|
|
Dioxin
|
0.000000029
|
0.00000003
|
1
|
21
|
26
|
1
|
52
|
|
Ethyl
acrylate
|
0.032
|
2
|
0.02
|
4
|
96
|
----
|
----
|
|
Ethylene
dibromide
|
0.0077
|
0.0045
|
2
|
----
|
----
|
----
|
100
|
|
Ethylene
dichloride
|
0.21
|
0.038
|
6
|
0.003
|
71
|
----
|
29
|
|
Ethylene
oxide
|
0.014
|
0.01
|
1.4
|
60
|
40
|
----
|
----
|
|
Formaldehyde
|
1.5
|
0.077
|
19
|
2
|
29
|
52
|
17
|
|
Hydrazine
|
0.00032
|
0.0002
|
1.6
|
----
|
----
|
----
|
----
|
|
Lead
*
|
0.0090
|
0.1
|
0.1
|
15
|
64
|
21
|
----
|
|
Manganese
*
|
0.0065
|
0.05
|
0.1
|
13
|
71
|
17
|
----
|
|
Mercury
compounds *
|
0.0026
|
0.3
|
0.01
|
8
|
34
|
2
|
57
|
|
Methyl
chloride
|
1.3
|
0.56
|
2
|
0.4
|
1
|
----
|
96
|
|
Methylene
chloride
|
0.43
|
2
|
0.2
|
19
|
46
|
----
|
35
|
|
Methylene
diphenyl diisocyanate *
|
0.00035
|
0.6
|
0.001
|
100
|
----
|
----
|
----
|
|
Naphthalene
*
|
0.16
|
14
|
0.01
|
2
|
25
|
73
|
----
|
|
Nickel
|
0.019
|
0.0042
|
4
|
59
|
34
|
6
|
----
|
|
Polycyclic
organic matter
|
0.32
|
0.0059
|
55
|
18
|
35
|
47
|
----
|
|
Propylene
dichloride
|
0.0048
|
0.053
|
0.1
|
1
|
99
|
----
|
----
|
|
Quinoline
|
0
|
0.00029
|
0
|
----
|
----
|
----
|
----
|
|
Styrene
|
0.19
|
1.8
|
0.1
|
1
|
79
|
19
|
----
|
|
1,1,2,2-Tetrachloroethane
|
0.0000087
|
0.017
|
0.0005
|
100
|
----
|
----
|
----
|
|
Tetrachloroethylene
|
0.62
|
0.071
|
9
|
8
|
69
|
----
|
22
|
|
1,1,2-Trichloroethane
|
0.00035
|
0.063
|
0.01
|
12
|
88
|
----
|
----
|
|
Trichloroethylene
|
0.48
|
0.1
|
5
|
18
|
65
|
----
|
17
|
|
Vinyl
chloride
|
0.098
|
0.012
|
8
|
----
|
100
|
----
|
----
|
|
Vinylidene
chloride
|
0.0000067
|
0.02
|
0.0003
|
100
|
----
|
----
|
----
|
back
to 1990 county-level estimates
|
