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Water-Quality Assessment of the Sacramento River
Basin, California: Water-Quality, Sediment and Tissue
Chemistry, and Biological Data, 1995-1998
(Open-File Report 2000-391)

Sacramento Slough near Knights Landing, California

Pesticides in filtered water (0.7 micrometer glass fiber filter) analyzed by gas
chromatography/ion trap mass spectrometry)

Number of significant figures do not reflect analytical method reporting levels.

Method reporting levels of all analytes

[nanogram/L - nanogram per liter, < - less than, E - estimate]

Date Time Eptam (nanogram/L) Pebulate (nanogram/L) Molinate (nanogram/L) Trifluralin (nanogram/L) Simazine (nanogram/L) Carbofuran (nanogram/L) Atrazine (nanogram/L) Fonofos (nanogram/L) Diazinon (nanogram/L) Carbaryl (nanogram/L) Alachlor (nanogram/L) Thiobencarb (nanogram/L) Malathion (nanogram/L) Metolachor (nanogram/L) Chlorpyrifos (nanogram/L) Dacthal (nanogram/L) Methidathion (nanogram/L) Napropamide (nanogram/L) Cyanazine (nanogram/L)
2/12/96 1230 <44 <44 E45 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
3/11/96 1300 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
4/22/96 1100 <44 <44 <60 <57 36 <31 <38 E9 <28 <41 <28 <38 <57 53 <25 <25 <38 <60 <41
5/23/96 1030 <44 7 702 E3 E8 E7 <38 <41 <28 E13 <28 143 <57 E14 <25 <25 <38 <60 <41
6/13/96 1030 <44 <44 3470 <57 E4 74 <38 <41 <28 <41 <28 646 <57 E26 <25 <25 <38 <60 <41
7/22/96 1050 <44 <44 966 E9 E3 63 <38 <41 <28 441 <28 38.9 <57 44 <25 <25 <38 <60 <41
8/26/96 1100 <44 <44 281 <57 <22 97 <38 <41 <28 E7 <28 E21 E51 E10 <25 <25 <38 <60 <41
9/10/96 1100 <44 <44 180 <57 E2 57 <38 <41 <28 <41 <28 E14 92 <44 <25 <25 <38 <60 <41
10/17/96 1000 <44 <44 E31 <57 <22 <31 <38 <41 <28 <41 <28 <38 62 <44 <25 <25 <38 <60 <41
3/6/97 1130 <44 <44 <60 <57 <22 <31 <38 <41 E17 <41 <28 <38 <57 E27 <25 <25 <38 <60 <41
4/29/97 1040 <44 <44 346 <57 <22 176 <38 <41 E6 <41 <28 <38 <57 E10 <25 <25 <38 <60 <41
5/14/97 1030 <44 <44 8170 E6 <22 282 <38 <41 <28 <41 <28 130 <57 76 <25 <25 <38 <60 <41
6/19/97 1200 <44 <44 8460 <57 <22 204 <38 <41 E17 <41 <28 243 <57 45 <25 <25 <38 <60 <41
7/24/97 1030 <44 <44 562 E2 <22 47 <38 <41 <28 <41 <28 58 <57 E28 E11 <25 <38 <60 <41
8/13/97 1030 <44 <44 232 <57 <22 66 <38 <41 <28 85 <28 E36 E10 E25 <25 <25 <38 <60 <41
9/24/97 1430 <44 <44 105 <57 <22 <31 <38 <41 <28 <41 <28 E17 75 <44 <25 <25 <38 <60 <41
10/29/97 1000 <44 <44 72 <57 <22 50 <38 <41 <28 208 <28 E18 <57 <44 <25 <25 <38 <60 <41
11/25/97 1000 <44 <44 71 <57 <22 38 <38 <41 <28 E23 <28 <38 <57 E13 <25 <25 <38 <60 <41
12/16/97 1030 <44 <44 E43 <57 <22 40 <38 <41 <28 E16 <28 <38 <57 <44 <25 <25 <38 <60 <41
1/28/98 1100 <44 <44 <60 <57 <22 <31 <38 <41 E11 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
2/25/98 1100 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
3/25/98 1120 <44 <44 <60 <57 <22 <31 <38 <41 E6 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
4/22/98 1000 <44 <44 E30 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 E8 <25 <25 <38 <60 <41

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