Table 4. Event-mean concentrations for selected properties and constituents in runoff samples, 2000–2001
[mg/L, milligrams per liter;
--, not measured; µS/cm, microsiemens
per centimeter at 25 degrees Celsius; <, less than; µg/L,
micrograms per liter]
|
Constituent |
Moody
Creek watershed |
|
Watershed
1 |
|
Watershed
2 |
|||||||
|
Event date |
Event date |
Event date |
||||||||||
|
10/06/00 |
01/11/01 |
08/30/01 |
11/16/01 |
10/06/00 |
01/11/01 |
08/30/01 |
11/16/01 |
08/30/01 |
11/16/01 |
|||
|
Dissolved solids (mg/L) |
37 |
80 |
56 |
-- |
|
83 |
70 |
62 |
84 |
|
30 |
116 |
|
Suspended solids (mg/L) |
38 |
144 |
444 |
-- |
|
166 |
13 |
18 |
22 |
|
790 |
128 |
|
Specific conductance (µS/cm) |
191 |
100 |
102 |
-- |
|
118 |
85 |
51 |
57 |
|
56 |
112 |
|
Alkalinity (mg/L as CaCO3) |
54 |
-- |
-- |
-- |
|
-- |
-- |
-- |
-- |
|
-- |
-- |
|
Chemical oxygen demand (mg/L) |
36 |
49 |
32 |
-- |
|
35 |
37 |
31 |
29 |
|
<10 |
26 |
|
pH (standard units) |
7.9 |
7.5 |
7.6 |
-- |
|
7.1 |
6.9 |
6.9 |
7.2 |
|
7.7 |
7.6 |
|
Nitrogen, ammonia, dissolved (mg/L) |
.12 |
.04 |
.03 |
0.03 |
|
.07 |
.02 |
.04 |
.02 |
|
.05 |
<.04 |
|
Nitrogen, ammonia + organic, dissolved (mg/L) |
.91 |
.98 |
.57 |
.63 |
|
.71 |
.90 |
.72 |
.70 |
|
.28 |
.64 |
|
Nitrogen, ammonia + organic, total (mg/L) |
1.7 |
1.8 |
1.7 |
1.9 |
|
1.0 |
1.2 |
.79 |
.94 |
|
3.0 |
1.1 |
|
Nitrogen, nitrite + nitrate, dissolved (mg/L) |
.82 |
.58 |
.18 |
.36 |
|
.27 |
.04 |
.13 |
.11 |
|
.20 |
.33 |
|
Nitrogen, nitrite, dissolved (mg/L) |
.03 |
.01 |
.01 |
.01 |
|
.01 |
.004 |
.007 |
.005 |
|
.02 |
.02 |
|
Phosphorus, orthophosphate, dissolved (mg/L) |
.10 |
.04 |
.09 |
.06 |
|
.15 |
.01 |
.03 |
.13 |
|
.05 |
.08 |
|
Phosphorus, dissolved (mg/L) |
.13 |
.07 |
.11 |
.09 |
|
.19 |
.04 |
.06 |
.03 |
|
.06 |
.11 |
|
Phosphorus, total (mg/L) |
-- |
.19 |
.31 |
.26 |
|
.22 |
.07 |
.08 |
.06 |
|
.39 |
.18 |
|
Calcium, dissolved (mg/L) |
12 |
8.3 |
10 |
-- |
|
1.4 |
4.9 |
3.9 |
4.0 |
|
5.1 |
13 |
|
Magnesium, dissolved (mg/L) |
2.0 |
1.4 |
1.3 |
-- |
|
.44 |
1.4 |
1.1 |
1.3 |
|
.70 |
1.9 |
|
Sodium, dissolved (mg/L) |
16 |
5.1 |
5.8 |
-- |
|
.91 |
4.3 |
2.4 |
1.7 |
|
1.3 |
3.5 |
|
Potassium, dissolved (mg/L) |
5.1 |
5.6 |
4.2 |
-- |
|
7.1 |
6.2 |
4.9 |
6.0 |
|
2.7 |
6.1 |
|
Chloride, dissolved (mg/L) |
26 |
5.3 |
3.7 |
-- |
|
2.0 |
5.7 |
2.4 |
2.2 |
|
1.0 |
4.1 |
|
Sulfate, dissolved (mg/L) |
11 |
4.1 |
3.1 |
-- |
|
1.1 |
3.8 |
1.5 |
1.7 |
|
1.1 |
2.9 |
|
Fluoride, dissolved (mg/L) |
<.16 |
<.2 |
<.2 |
-- |
|
.16 |
<.2 |
<.2 |
.20 |
|
<.2 |
<.1 |
|
Silica, dissolved (mg/L) |
4.4 |
7.6 |
6.0 |
-- |
|
2.0 |
8.2 |
5.6 |
.70 |
|
5.2 |
19 |
|
Cadmium, total (µg/L) |
<.1 |
.1 |
.12 |
-- |
|
<.1 |
<.1 |
<.1 |
<.1 |
|
.24 |
<.1 |
|
Copper, total (µg/L) |
<20 |
<20 |
<20 |
-- |
|
<20 |
<20 |
<20 |
<10 |
|
<20 |
7 |
|
Iron, dissolved (µg/L) |
22 |
40 |
40 |
-- |
|
24 |
30 |
50 |
30 |
|
<10 |
<10 |
|
Lead, total (µg/L) |
<1 |
4 |
9 |
-- |
|
3 |
<1 |
<1 |
<1 |
|
15 |
3 |
|
Manganese, dissolved (µg/L) |
16 |
7.0 |
3.4 |
-- |
|
6.2 |
<3 |
3.1 |
<2 |
|
<3 |
<2 |
|
Mercury, total (µg/L) |
<.14 |
<.1 |
.02 |
-- |
|
<.14 |
<.1 |
<.1 |
.01 |
|
.02 |
.01 |
|
Nickel, total (µg/L) |
<2 |
2 |
5 |
-- |
|
2 |
<2 |
1 |
<2 |
|
8 |
2 |
|
Zinc, total (µg/L) |
<31 |
17 |
<31 |
-- |
|
17 |
<31 |
<31 |
<25 |
|
-- |
14 |
|
Oil & grease, total recoverable (mg/L) |
2 |
<1 |
-- |
<7 |
|
1 |
<1 |
<1 |
6 |
|
-- |
4 |
|
Acetochlor (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Alpha–HCH (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Atrazine (µg/L) |
<.007 |
<.007 |
<.007 |
-- |
|
<.007 |
.006 |
.007 |
-- |
|
<.007 |
<.007 |
|
Deethylatrazine (µg/L) |
<.006 |
.01 |
<.006 |
-- |
|
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
|
Alachlor (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Azinphos-methyl (µg/L) |
<.05 |
<.05 |
<.05 |
-- |
|
<.05 |
<.05 |
<.05 |
-- |
|
<.05 |
<.05 |
|
Benfluralin (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Butylate (µg/L) |
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
|
Carbofuran (µg/L) |
<.028 |
<.028 |
<.028 |
-- |
|
<.028 |
<.028 |
<.028 |
-- |
|
<.028 |
<.028 |
|
Carbaryl (µg/L) |
<.04 |
<.04 |
<.04 |
-- |
|
<.04 |
<.04 |
<.04 |
-- |
|
<.04 |
<.04 |
|
Carbofuran (µg/L) |
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
|
Chlorpyrifos (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Cyanazine (µg/L) |
<.018 |
<.018 |
<.018 |
-- |
|
<.018 |
<.018 |
<.018 |
-- |
|
<.018 |
<.018 |
|
2,6-Diethylaniline (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
DCPA (µg/L) |
<.003 |
<.003 |
<.003 |
-- |
|
<.003 |
<.003 |
<.003 |
-- |
|
<.003 |
<.003 |
|
Diazinon (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Dieldrin (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Disulfoton (µg/L) |
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
<.02 |
-- |
|
<.02 |
<.02 |
|
EPTC (µg/L) |
<.004 |
<.004 |
<.004 |
-- |
|
<.004 |
<.004 |
<.004 |
-- |
|
<.004 |
<.004 |
|
Ethalfluralin (µg/L) |
<.009 |
<.009 |
<.009 |
-- |
|
<.009 |
<.009 |
<.009 |
-- |
|
<.009 |
<.009 |
|
Ethoprop (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Fonofos (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Gamma–HCH (µg/L) |
<.004 |
<.004 |
<.004 |
-- |
|
<.004 |
<.004 |
<.004 |
-- |
|
<.004 |
<.004 |
|
Linuron (µg/L) |
<.0035 |
<.035 |
<.035 |
-- |
|
<.0035 |
<.035 |
<.035 |
-- |
|
<.035 |
<.035 |
|
Malathion (µg/L) |
<.027 |
<.027 |
<.027 |
-- |
|
<.027 |
<.027 |
<.027 |
-- |
|
<.027 |
<.027 |
|
Methyl parathion (µg/L) |
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
|
Metalochlor (µg/L) |
<.013 |
<.013 |
<.013 |
-- |
|
<.013 |
<.013 |
<.013 |
-- |
|
<.013 |
<.013 |
|
Metribuzin (µg/L) |
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
|
Methomyl (µg/L) |
<.017 |
<.017 |
<.017 |
-- |
|
<.017 |
<.017 |
<.017 |
-- |
|
<.017 |
<.017 |
|
Methiocarb (µg/L) |
<.026 |
<.026 |
<.026 |
-- |
|
<.026 |
<.026 |
<.026 |
-- |
|
<.026 |
<.026 |
|
Molinate (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Napropamide (µg/L) |
<.007 |
<.007 |
<.007 |
-- |
|
<.007 |
<.007 |
<.007 |
-- |
|
<.007 |
<.007 |
|
Parathion (µg/L) |
<.007 |
<.007 |
<.007 |
-- |
|
<.007 |
<.007 |
<.007 |
-- |
|
<.007 |
<.007 |
|
p,p’-DDE (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Pebulate (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Pendimethalin (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Permethrin (µg/L) |
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
<.006 |
-- |
|
<.006 |
<.006 |
|
Phorate (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Prometon (µg/L) |
<.015 |
<.015 |
<.015 |
-- |
|
<.015 |
<.015 |
<.015 |
-- |
|
<.015 |
<.015 |
|
Pronamide (µg/L) |
<.008 |
<.008 |
<.008 |
-- |
|
<.008 |
<.008 |
<.008 |
-- |
|
<.008 |
<.008 |
|
Propanil (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Propachlor (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Propargite (µg/L) |
<.023 |
<.023 |
<.023 |
-- |
|
<.023 |
<.023 |
<.023 |
-- |
|
<.023 |
<.023 |
|
Simazine (µg/L) |
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
<.01 |
-- |
|
<.01 |
<.01 |
|
Thiobencarb (µg/L) |
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
<.005 |
-- |
|
<.005 |
<.005 |
|
Tebuthiuron (µg/L) |
<.016 |
<.016 |
<.016 |
-- |
|
<.016 |
<.016 |
<.016 |
-- |
|
<.016 |
<.016 |
|
Terbacil (µg/L) |
<.34 |
<.34 |
<.34 |
-- |
|
<.34 |
<.34 |
<.34 |
-- |
|
<.34 |
<.34 |
|
Terbufos (µg/L) |
<.017 |
<.017 |
<.017 |
-- |
|
<.017 |
<.017 |
<.017 |
-- |
|
<.017 |
<.017 |
|
Triallate (µg/L) |
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
<.002 |
-- |
|
<.002 |
<.002 |
|
Trifluralin (µg/L) |
<.009 |
.004 |
<.009 |
-- |
|
<.009 |
.003 |
<.009 |
-- |
|
<.009 |
<.009 |
Contents | Back to Runoff | Table 5