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]
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Agriculture
indicator site
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Urban
indicator site
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Integrator site
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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) |
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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 | ||||||||
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