22
9
5
2
0
41
Lab Analysis
%
Volatile Total Suspended Solids*
38
22
15
7
0
39
Lab Analysis
mg/L
Chemical Oxygen Demand*
20%
180
<100
<100
<100
<100
41
Lab Analysis
µg/L
Total Extractable Hydrocarbons (Oil and Grease)*
2%
0.36
<0.1
<0.1
<0.1
<0.1
41
Lab Analysis
µg/L
Desisopropyl Atrazine*
78
36
27
16
0
41
Lab Analysis
mg/L
Total Suspended Solids*
3.6
5.1
0.44
1.3
3.20
Max Value
77%
0.16
<0.1
<0.1
<0.1
41
Lab Analysis
µg/L
Desethyl Atrazine*
49%
0.16
<0.1
<0.1
<0.1
41
Lab Analysis
µg/L
Acetochlor*
5%
<0.1
<0.1
<0.1
<0.1
41
Lab Analysis
µg/L
Trifluralin*
66%
0.2
0.14
<0.1
<0.1
41
Lab Analysis
µg/L
Metolachlor*
95%
0.57
0.42
0.21
<0.1
41
Lab Analysis
µg/L
Atrazine*
% Detection
75th
percentile
50th
percentile
25th
percentile
Min Value
# of Samples
Method
Unit
Scott County Snapshot Sampling Results – May 21, 2002 (continued).
mg/L = milligrams per liter (or parts per million – ppm); µg/L = micrograms per liter (or parts per billion – ppb); CFU/100 ml = Colony Forming Units per 100 milliliters of water
*Parameter measured at Davenport Water Pollution Control long-term sites only.
**Parameter measured at non-Davenport Water Pollution Control long-term sites only.
The following pesticides were also analyzed at the 41 Davenport Water Pollution Control long-term sites in May 2002, however, no detections were reported: cyanazine, alachlor, metribuzin, butylate.