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SOMERSET COUNTY

CEP Average Air Toxics Estimates for Somerset 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

0.69

0.45

2

4

44

53

----

Acrolein *

0.24

0.02

12

----

67

33

----

Acrylamide

0.00000071

0.00077

0.001

100

----

----

----

Acrylonitrile

0.055

0.015

4

1

99

----

----

Arsenic

0.00037

0.00023

2

31

38

32

----

Benzene

2.2

0.12

19

1

36

42

21

Beryllium

0.000015

0.00042

0.03

50

47

3

----

1,3-Butadiene

0.10

0.0036

29

----

26

74

----

Cadmium

0.00056

0.00029

2

29

71

----

----

Carbon tetrachloride

0.90

0.067

13

----

2

----

98

Chloroform

0.091

0.043

2

2

7

----

91

Chromium

0.00099

0.000083

12

46

38

16

----

p-Dichlorobenzene

0.25

0.091

3

----

100

----

----

1,3-Dichloropropene

0.049

0.027

2

----

100

----

----

Dioxin

0.000000023

0.00000003

1

3

30

1

66

Ethyl acrylate

0.031

2

0.02

3

97

----

----

Ethylene dibromide

0.0077

0.0045

2

----

----

----

100

Ethylene dichloride

0.21

0.038

5

----

71

----

30

Ethylene oxide

0.0073

0.01

0.7

30

70

----

----

Formaldehyde

1.1

0.077

15

1

28

49

22

Hydrazine

0.00012

0.0002

0.6

----

----

----

----

Lead *

0.0074

0.1

0.1

8

72

20

----

Manganese *

0.0055

0.05

0.1

8

77

16

----

Mercury compounds *

0.0024

0.3

0.01

2

34

1

63

Methyl chloride

1.3

0.56

2

0.1

1

----

96

Methylene chloride

0.38

2

0.2

19

41

----

40

Methylene diphenyl diisocyanate *

0.00033

0.6

0.001

100

----

----

----

Naphthalene *

0.12

14

0.01

1

26

73

----

Nickel

0.011

0.0042

3

57

37

6

----

Polycyclic organic matter

0.21

0.0059

35

9

38

53

----

Propylene dichloride

0.0047

0.053

0.1

1

99

----

----

Quinoline

0

0.00029

0

----

----

----

----

Styrene

0.19

1.8

0.1

2

84

15

----

1,1,2,2-Tetrachloroethane

0.0000012

0.017

0.0001

100

----

----

----

Tetrachloroethylene

0.48

0.071

7

7

64

----

29

1,1,2-Trichloroethane

0.00031

0.063

0.005

27

73

----

----

Trichloroethylene

0.37

0.1

4

7

71

----

22

Vinyl chloride

0.095

0.012

8

----

100

----

----

Vinylidene chloride

0.0000017

0.02

0.0001

100

----

----

----

back to 1990 county-level estimates

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