STORET/WQX Data Warehouse (1986-2012)
STORET/Water Quality Exchange (WQX) is a repository for water quality, biological, and physical data maintained by the USEPA. Data are submitted by states, tribes, and others. Data were downloaded on February 15, 2015 (USEPA, 2015). Data were available from several states and are summarized in Table B 1-10.7. This summary includes data that are reported elsewhere for California but were also submitted to STORET. There were 29 samples with diazinon concentrations above 1 µg/L. Most of these higher detections occurred in California and Alabama but some also occurred in Minnesota, Missouri, and Florida in samples collected between 1993 and 2003.
Surface water samples were collected and analyzed for diazoxon. In 2009 in Washington State, 10 samples were collected in Callam County and diazoxon was present in all samples above the method detection limit, but below an unreported quantitation limit. Diazoxon was not detected in 2,890 samples collected in Minnesota between 2012 and 2013 with a method detection limit ranging from 0.075 to 0.15 µg/L.
Table B 1-10.7. Summary of STORET surface water monitoring data by State
State
|
Detections
|
Total Samples
|
Frequency of Detections
|
Maximum Diazinon Concentration µg/L
|
Alabama
|
24
|
474
|
5.06%
|
4.2
|
Arizona
|
47
|
846
|
5.56%
|
0.697
|
Arkansas
|
40
|
545
|
7.34%
|
0.38732
|
Californiaa
|
415
|
683
|
60.76%
|
6.7
|
Colorado
|
0
|
127
|
0.00%
|
--
|
Florida
|
374
|
4864
|
7.69%
|
1.8
|
Idaho
|
0
|
19
|
0.00%
|
--
|
Illinois
|
161
|
1318
|
12.22%
|
0.48
|
Iowa
|
28
|
3970
|
0.71%
|
0.46
|
Kansas
|
50
|
262
|
19.08%
|
0.85
|
Kentucky
|
6
|
277
|
2.17%
|
0.0501
|
Louisiana
|
1
|
18
|
5.56%
|
0.0569
|
Minnesota
|
134
|
6628
|
2.02%
|
1.66
|
Missouri
|
20
|
110
|
18.18%
|
1.5
|
Montana
|
0
|
2
|
0.00%
|
--
|
New Mexico
|
0
|
91
|
0.00%
|
--
|
North Carolina
|
0
|
1135
|
0.00%
|
--
|
North Dakota
|
20
|
247
|
8.10%
|
Detections below quantitation Level of (MDL=0.1 µg/L)
|
Oklahoma
|
32
|
39
|
82.05%
|
0.03035
|
South Dakota
|
251
|
251
|
100.00%
|
Detections below quantitation Level (MDL=0.25 µg/L)
|
Tennessee
|
0
|
5
|
0.00%
|
--
|
Texas
|
0
|
1
|
0.00%
|
--
|
Spirit Lake (Tribal Data)
|
1
|
1
|
100.00%
|
Detections below quantitation Level of (MDL=0.1 µg/L)
|
Utah
|
32
|
513
|
6.24%
|
0.6
|
Washington
|
79
|
116
|
68.10%
|
0
|
Wisconsin
|
69
|
69
|
100.00%
|
0.5
|
Wyoming
|
0
|
5
|
0.00%
|
--
|
All States
|
1784
|
22616
|
7.89%
|
6.7
|
MDL=method detection limit
a Some values reported in California were duplicates. These duplicates were not removed for this analysis.
Share with your friends: |