Table 8. Number of detections and range in concentration of pesticides detected in samples collected at intensive fixed sites
[mg/L, micrograms per liter]
|
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Agriculture
indicator site
|
Urban
indicator site
|
Integrator
site
|
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Pesticide | Num- ber of detec- tions (32 samples) |
Range in concen- tration (µg/L) |
Pesticide | Num- ber of detec- tions (35 samples) |
Range in concen- tration (µg/L) |
Pesticide | Num- ber of detec- tions (26 samples) |
Range in concen- tration (µg/L) |
||
|
||||||||||
Atrazine |
32 |
0.0060-.11 | Alachlor |
3 |
0.0040-.018 | Alachlor |
4 |
0.0030-.020 | ||
Benfluralin |
3 |
.0026-.0047 | Atrazine |
35 |
.0040-.75 | Atrazine |
26 |
.0080-.38 | ||
Carbaryl |
4 |
.0044-.090 | Benfluralin |
2 |
.0036-.0047 | Carbaryl |
16 |
.0051-.36 | ||
Chlorpyrifos |
7 |
1.0033-.0075 | Bentazon |
1 |
.02 | Carbofuran |
5 |
.012-.042 | ||
2,4-D |
1 |
.09 | Bromacil |
7 |
.060-1.6 | Chlorpyrifos |
15 |
.0028-.0094 | ||
DCPA |
1 |
1.0019 | Carbaryl |
21 |
.0071-.33 | DCPA |
9 |
1.0006-.016 | ||
p,p'-DDE |
2 |
1.0015-.0030 | Chlorpyrifos |
16 |
1.0027-.011 | Deethylatrazine |
25 |
.0067-.029 | ||
Deethylatrazine |
32 |
.0020-.11 | Cyanazine |
2 |
.0045-.011 | Diazinon |
20 |
.0060-.16 | ||
Diazinon |
12 |
1.0010-.059 | 2,4-D |
1 |
.22 | Diuron |
3 |
.070-.24 | ||
Malathion |
3 |
.0040-.0080 | DCPA |
6 |
.0006-.0031 | alpha-HCH |
1 |
0.014 | ||
Metolachlor |
6 |
1.0010-.0060 | p,p'-DDE |
4 |
.0017-.0046 | Lindane |
16 |
.0050-.044 | ||
Prometon |
20 |
.0023-.0094 | Deethylatrazine |
34 |
1.0016-.054 | Malathion |
7 |
.0060-.036 | ||
Simazine |
2 |
1.0018-.0026 | Diazinon |
27 |
.0040-.33 | Metolachlor |
18 |
.0030-.016 | ||
Terbufos |
1 |
.008 | Diuron |
15 |
.020-1.1 | Prometon |
26 |
1.0056-.044 | ||
Trifluralin |
2 |
.0022-.0052 | Malathion |
13 |
.0050-.11 | Propachlor |
1 |
1.0009 | ||
MCPA |
1 |
.08 | Simazine |
21 |
1.0025-.043 | |||||
Metolachlor |
16 |
.0030-.018 | Tebuthiuron |
15 |
1.0073-.43 | |||||
Metribuzin |
1 |
0.029 | Terbufos |
1 |
1.011 | |||||
Oryzalin |
1 |
0.03 | ||||||||
Prometon |
35 |
1.016-.24 | ||||||||
Pronamide |
1 |
.014 | ||||||||
Propanil |
1 |
.0078 | ||||||||
Simazine |
29 |
1.0039-.25 | ||||||||
Tebuthiuron |
34 |
.041-2.8 | ||||||||
Triclopyr |
2 |
.070-.81 | ||||||||
|
1 Values below method detection limit estimated by U.S. Geological Survey National Water-Quality Laboratory.
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