Table 9.  Number of detections and range in concentration of volatile organic compounds detected in samples collected at intensive fixed sites

[mg/L, micrograms per liter]


Agriculture indicator site
Urban indicator site
Integrator site
Volatile
organic compound
Num-
ber of detec-
tions
(7 sam-
ples)
Range in concen-
tration (mg/L)
Volatile
organic compound
Num-
ber of detec-
tions
(22 sam-
ples)
Range in concen-
tration (mg/L)
Volatile organic compound Num-
ber of detec-
tions
 
(13 sam-
ples)
Range in concen-
tration (mg/L)

Acetone

1

10.7 Acetone

7

11.0-6.1 Acetone

3

11.0-2.0
Benzene

2

.036-.10 Benzene

4

1.013-.028 Benzene

5

1.015-.082
Bromoform

3

1.020-.030 2-Butanone

1

.9 Bromochloromethane

1

1.02
Carbon disulfide

4

1.0080-.030 Carbon disulfide

6

1.020-.025 Bromoform

10

1.050-.28
Chlorodibromomethane

1

1.02 Chloromethane

4

1.010-.024 2-Butanone

3

1.30-1.2
Chloroform

4

1.0080-.030 1,4-Dichlorobenzene

2

1.01 Carbon disulfide

7

1.010-.033
Dichlorobromomethane

2

1.01 1,1-Dichloroethane

1

1.013 Chlorobenzene

1

1.006
Ethylbenzene

2

1.0090-.030 cis-1,2-Dichloroethene

18

1.010-.065 Chlorodibromomethane

13

.10-1.9
p-Isopropyltoluene

4

1.0040-.081 Ethylbenzene

2

1.010-.012 Chloroform

13

.40-4.6
Naphthalene

1

1.02 p-Isopropyltoluene

3

1.0070-.010 Chloromethane

2

1.020-.024
Toluene

2

1.010-.14 Methyl tert-butyl ether (MTBE)

13

.074-.57 2-Chlorotoluene

1

.05
1,2,4-Trimethylbenzene

1

1.01 Methylene chloride

1

.8 Dibromomethane

1

1.01
1,3,5-Trimethylbenzene

1

1.005 4-Methyl-2-pentanone (MIBK)

1

1.1 1,4-Dichlorobenzene

11

1.0080-.030
meta- and para-Xylene

3

1.010-.040 Napthalene

1

1.083 Dichlorobromomethane

13

.19-2.3
ortho-Xylene

1

1.02 Styrene

2

1.0050-.020 cis-1,2-Dichloroethene

1

1.014
Tetrachloroethene

5

1.0020-.0070 Ethylbenzene

3

1.010-.036
Toluene

12

1.020-.040 o-Ethyl toluene

1

1.011
1,1,2-Trichlorotrifluoroethane

2

1.0050-.0060 p-Isopropyltoluene

3

1.010-.026
1,2,4-Trimethylbenzene

5

1.0080-.038 Methyl tert-butyl ether (MTBE)

1

0.08
meta- and para-Xylene

5

1.015-.038 Methyl iodide

1

1.01
ortho-Xylene

3

1.011-.020 4-Methyl-2-pentanone (MIBK)

1

1.08
Naphthalene

2

1.081-.13
n-Propylbenzene

1

1.008
Styrene

1

1.01
Tetrachloroethene

4

1.0020-.0080
Tetrahydrofuran

4

1.40-3.9
1,2,3,5-Tetramethylbenzene

1

1.026
Toluene

7

.040-.21
1,2,3-Trimethylbenzene

2

1.022-.023
1,2,4-Trimethylbenzene

2

.050-.053
1,3,5-Trimethylbenzene

1

1.016
meta- and para-Xylene

4

1.010-.056
ortho-Xylene

2

1.029-.034

Back to:

Table of Contents