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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)

Feather River near Nicolaus, 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)
2/23/96 1020 <44 <44 <60 <57 32.8 <31 <38 <41 E7 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
3/19/96 1330 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
4/4/96 1520 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
5/14/96 0940 <44 <44 276 <57 <22 E21 <38 <41 <28 <41 <28 E3.1 <57 <44 <25 <25 <38 <60 <41
6/11/96 1030 <44 <44 212 <57 <22 E12 <38 <41 <28 <41 E5 E14 <57 <44 <25 <25 <38 <60 <41
7/26/96 1000 <44 <44 E55 <57 <22 <31 <38 <41 <28 310 <28 <38 <57 <44 <25 <25 <38 <60 <41
8/15/96 0930 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
9/11/96 1030 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
10/7/96 1040 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
11/5/96 1030 <44 <44 <60 <57 <22 E16 <38 <41 <28 E37 <28 <38 <57 <44 <25 <25 <38 <60 <41
12/18/96 1430 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
1/28/97 1000 <44 <44 <60 <57 <22 <31 <38 <41 98 <41 <28 <38 <57 <44 <25 <25 69 <60 <41
2/13/97 1030 <44 <44 <60 <57 <22 <31 <38 <41 E9 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
3/12/97 1050 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
4/15/97 1100 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
5/19/97 1050 <44 <44 902 <57 <22 43 <38 <41 E7 <41 <28 167 <57 <44 <25 <25 <38 <60 <41
6/19/97 1020 <44 <44 102 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
7/15/97 1100 <44 <44 <60 <57 <22 <31 <38 <41 <28 74 E1 E2 <57 <44 <25 <25 <38 <60 <41
8/14/97 1100 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
9/19/97 1000 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 E7 <44 <25 <25 <38 <60 <41
10/28/97 1030 <44 <44 E15 <57 <22 34 <38 <41 <28 43 <28 <38 <57 <44 <25 <25 <38 <60 <41
11/24/97 1000 <44 <44 E19 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
12/8/97 1100 <44 <44 <60 <57 145 E17 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
1/12/98 1100 <44 <44 <60 <57 <22 <31 <38 <41 E7 <41 <28 <38 <57 <44 <25 <25 45 <60 <41
2/17/98 1100 <44 <44 <60 <57 <22 <31 <38 <41 E81 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
3/24/98 1100 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41
4/20/98 1020 <44 <44 <60 <57 <22 <31 <38 <41 <28 <41 <28 <38 <57 <44 <25 <25 <38 <60 <41

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