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HUNTERDON COUNTY

CEP Average Air Toxics Estimates for Hunterdon 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

0.43

0.45

1

1

38

61

----

Acrolein *

0.12

0.02

6

1

51

48

----

Acrylamide

0.00000092

0.00077

0.001

100

----

----

----

Acrylonitrile

0.0055

0.015

0.4

3

98

----

----

Arsenic

0.00020

0.00023

1

22

38

40

----

Benzene

1.5

0.12

13

4

24

41

31

Beryllium

0.000011

0.00042

0.03

40

59

1

----

1,3-Butadiene

0.084

0.0036

23

0.2

43

56

----

Cadmium

0.00018

0.00029

1

18

82

----

----

Carbon tetrachloride

0.88

0.067

13

----

----

----

100

Chloroform

0.089

0.043

2

5

2

----

93

Chromium

0.00077

0.000083

9

51

35

14

----

p-Dichlorobenzene

0.045

0.091

0.5

----

100

----

----

1,3-Dichloropropene

0.022

0.027

1

----

100

----

----

Dioxin

0.000000019

0.00000003

1

8

15

1

77

Ethyl acrylate

0.0029

2

0.001

8

92

----

----

Ethylene dibromide

0.0077

0.0045

2

----

----

----

100

Ethylene dichloride

0.075

0.038

2

----

19

----

81

Ethylene oxide

0.0016

0.01

0.2

45

55

----

----

Formaldehyde

0.87

0.077

11

1

28

43

29

Hydrazine

0.0000056

0.0002

0.03

----

----

----

----

Lead *

0.0039

0.1

0.04

15

59

26

----

Manganese *

0.0036

0.05

0.1

10

75

16

----

Mercury compounds *

0.0019

0.3

0.01

2

16

1

81

Methyl chloride

1.3

0.56

2

0.02

1

----

95

Methylene chloride

0.30

2

0.2

25

25

----

49

Methylene diphenyl diisocyanate *

0.0025

0.6

0.004

100

----

----

----

Naphthalene *

0.089

14

0.01

5

30

65

----

Nickel

0.0040

0.0042

1

36

57

7

----

Polycyclic organic matter

0.15

0.0059

25

9

43

48

----

Propylene dichloride

0.00050

0.053

0.01

8

92

----

----

Quinoline

0.0000043

0.00029

0.01

----

----

----

----

Styrene

0.029

1.8

0.02

26

18

56

----

1,1,2,2-Tetrachloroethane

0.00000019

0.017

0.00001

100

----

----

----

Tetrachloroethylene

0.39

0.071

6

3

60

----

36

1,1,2-Trichloroethane

0.00035

0.063

0.01

66

34

----

----

Trichloroethylene

0.23

0.1

2

9

56

----

35

Vinyl chloride

0.010

0.012

1

4

96

----

----

Vinylidene chloride

0.00000079

0.02

0.00004

100

----

----

----

back to 1990 county-level estimates

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