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PRIVATE WELL TESTING ACT PROGRAM - page 34 / 75

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Benzene

1

66 (0.1%)

ND - 101

Carbon tetrachloride

2

58 (0.1%)

ND - 75

Chlorobenzene

50

0

ND - 15.8

1,2-Dichlorobenzene

600

0

ND - 5

1,3-Dichlorobenzene

600

0

ND - 18.6

1,4-Dichlorobenzene

75

0

ND – 19.0

1,1-Dichloroethane

50

1 (0.002%)

ND - 82

1,2-Dichloroethane

2

28 (0.1%)

ND - 31.3

1,1-Dichloroethylene

2

34 (0.1)

ND – 54.1

cis-1,2-Dichloroethylene

70

2 (0.004%)

ND - 362

trans-1,2-Dichloroethylene

100

0

ND - 15.6

1,2-Dichloropropane

5

23 (0.05%)

ND - 240

Ethylbenzene

700

0

ND – 39.7

MTBE

70

38 (0.1%)

ND - 1550

Methylene Chloride

3

44 (0.1%)

ND – 48.1

Naphthalene

300

0

ND - 22.9

Styrene

100

1 (0.002%)

ND - 149.4

1,1,2,2-Tetrachloroethane

1

8 (0.02%)

ND - 25.1

Tetrachloroethylene

1

223 (0.4%)

ND - 540

Toluene

1000

0

ND - 464

1,2,4-Trichlorobenzene

9

0

ND – 1.5

1,1,1-Trichloroethane

30

1 (0.002%)

ND – 50.5

1,1,2-Trichloroethane

3

3 (0.006%)

ND - 12.2

Trichloroethylene

1

247 (0.5%)

ND - 550

Vinyl chloride

2

2 (0.004%)

ND - 5.1

Xylenes, Total

1000

0

ND – 122.8

Table 3: Summary of Volatile Organic Compounds Results September 2002 to April 2007 (out of 51,035 wells)

MCL

No. of Wells with

Range of

(µg/l)

VOCs over the

detected

MCL

concentrations

Compound

(µg/l )

23

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