USGS Scientific Investigations Report 2010–5154 - Use of Stable Isotopes of Carbon and Nitrogen to Identify Sources of Organic Matter to Bed Sediments of the Tualatin River, Oregon

Appendix A.

Appendix A. Values of stable isotope compositions (δ¹³C, δ¹⁵N) and C/N ratios for samples collected from the Tualatin River basin, Oregon, including all analyzed split samples.

[Sample splits are marked with letter codes (A, B, C, etc) simply to label the replicates. Lab Rep is the replicate number (0, 1, 2, etc) for analyses performed on each sample split. The Acidified code is either A for acidified or U for unacidified. The δ values are in per mil. The δ¹⁵N qualifier is listed as L if the total nitrogen mass in the sample was less than 1 micromole. The C/N qualifier is listed as E if the percent nitrogen result had only one significant digit. Abbreviations: RM, river mile; —, no result or no sample detail; cm, centimeter]

ID	Site name	Sample type	Sample detail	Date	Sample split	Lab rep	Acidified	δ¹³C	δ¹⁵N	δ¹⁵N qualifier	C/N	C/N qualifier
1	Henry Hagg Lake	Seston, >80 μm	—	07-09-99	A	0	A	-28.87	7.54		3.86
1	Henry Hagg Lake	Seston, >80 μm	—	07-09-99	A	0	U	-29.37	6.76		4.86
1	Henry Hagg Lake	Seston, >80 μm	—	07-09-99	B	0	U	-28.79	6.86		5.04
1	Henry Hagg Lake	Seston, >80 μm	—	07-09-99	C	0	U	-29.20	6.99		4.80
2	Henry Hagg Lake	Seston, 80–202 μm	—	07-09-99	A	0	U	-28.70	6.58		5.00
	Henry Hagg Lake	Seston, 80–202 μm	—	07-09-99	B	0	U	-28.97	6.02		5.08
2	Henry Hagg Lake	Seston, 80–202 μm	—	07-09-99	C	0	U	-29.05	6.40		4.91
3	Tualatin River at RM 20.3	Seston, >80 μm	—	07-14-99	A	0	A	-30.39	7.50		9.83
3	Tualatin River at RM 20.3	Seston, >80 μm	—	07-14-99	B	0	A	-30.56	7.93		9.51
3	Tualatin River at RM 20.3	Seston, >80 μm	—	07-14-99	C	0	A	-30.43	7.88		9.85
4	Tualatin River at RM 20.3	Seston, 80–202 μm	—	07-14-99	A	0	A	-30.55	8.05		9.36
4	Tualatin River at RM 20.3	Seston, 80–202 μm	—	07-14-99	B	0	A	-30.79	8.35		8.01
4	Tualatin River at RM 20.3	Seston, 80–202 μm	—	07-14-99	B	0	U	-30.77	6.80		9.17
4	Tualatin River at RM 20.3	Seston, 80–202 μm	—	07-14-99	C	0	A	-30.67	7.81		8.42
5	Tualatin River at RM 20.3	Duckweed	Duckweed sorted from mat	07-14-99	A	0	A	-28.57	10.61		12.44
5	Tualatin River at RM 20.3	Duckweed	Duckweed sorted from mat	07-14-99	B	0	A	-28.65	10.37		12.36
5	Tualatin River at RM 20.3	Duckweed	Duckweed sorted from mat	07-14-99	C	0	A	-28.72	10.47		12.76
6	Tualatin River at RM 20.3	Woody material	Twigs sorted from duckweed mat	07-14-99	A	0	A	-28.54	2.75		30.02
6	Tualatin River at RM 20.3	Woody material	Twigs sorted from duckweed mat	07-14-99	B	0	A	-29.29	2.57		25.91
6	Tualatin River at RM 20.3	Woody material	Twigs sorted from duckweed mat	07-14-99	C	0	A	-29.26	2.64		25.38
7	Tualatin River at RM 20.3	Suspended sediment	—	07-14-99	A	0	A	-31.92	9.03		6.45
7	Tualatin River at RM 20.3	Suspended sediment	—	07-14-99	B	0	A	-32.36	8.93		6.64
7	Tualatin River at RM 20.3	Suspended sediment	—	07-14-99	B	1	A	-32.27	8.99		6.20
7	Tualatin River at RM 20.3	Suspended sediment	—	07-14-99	C	0	A	-32.41	9.02		6.81
8	Tualatin River at RM 20.3	Bed sediment	—	07-14-99	A	0	A	-27.39	6.33		12.37	E
8	Tualatin River at RM 20.3	Bed sediment	—	07-14-99	B	0	A	-27.50	4.94		12.00	E
8	Tualatin River at RM 20.3	Bed sediment	—	07-14-99	C	0	A	-27.50	—		13.36	E
10	Tualatin River at RM 20.3	Coniferous litter	Cones sorted from duckweed mat	07-14-99	A	0	A	-27.37	2.08	L	104.6
10	Tualatin River at RM 20.3	Coniferous litter	Cones sorted from duckweed mat	07-14-99	B	0	A	-27.35	-0.16	L	83.38
10	Tualatin River at RM 20.3	Coniferous litter	Cones sorted from duckweed mat	07-14-99	C	0	A	-27.03	-1.43	L	96.36
12	Tualatin River at RM 20.3	Leaf litter	Oregon Ash seed pods from river surface	07-14-99	A	0	A	-25.51	1.61		44.30
12	Tualatin River at RM 20.3	Leaf litter	Oregon Ash seed pods from river surface	07-14-99	B	0	A	-25.83	1.02	L	66.21
12	Tualatin River at RM 20.3	Leaf litter	Oregon Ash seed pods from river surface	07-14-99	C	0	A	-25.29	2.00		57.21
12	Tualatin River at RM 20.3	Leaf litter	Oregon Ash seed pods from river surface	07-14-99	C	1	A	-25.56	1.41		54.73
13	Tualatin River at RM 20.3	Leaf litter	Oregon Ash leaves from river surface	07-14-99	A	0	A	-27.08	1.02		24.90
13	Tualatin River at RM 20.3	Leaf litter	Oregon Ash leaves from river surface	07-14-99	B	0	A	-27.27	0.98		26.83
13	Tualatin River at RM 20.3	Leaf litter	Oregon Ash leaves from river surface	07-14-99	C	0	A	-26.84	0.65		27.89
14	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	07-14-99	A	0	A	-28.50	6.38		15.40
14	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	07-14-99	B	0	A	-28.59	6.89		13.55
14	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	07-14-99	C	0	A	-28.45	6.74		13.59
15	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	07-14-99	A	0	A	-28.37	6.01	L	14.91
15	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	07-14-99	B	0	A	-28.25	6.20		14.57
15	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	07-14-99	C	0	A	-28.18	6.51	L	14.84
16	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	07-14-99	A	0	A	-28.33	6.27	L	8.59
16	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	07-14-99	A	1	A	-28.47	6.28	L	8.64
16	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	07-14-99	B	0	A	-28.80	7.26		7.72
16	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	07-14-99	C	0	A	-28.60	7.40		7.54
17	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	07-14-99	A	0	A	-27.28	5.95		12.40
17	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	07-14-99	B	0	A	-27.59	6.19		13.68
17	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	07-14-99	C	0	A	-27.67	5.52		11.80
18	Tualatin River at RM 26.9 (Scholls)	Duckweed	Duckweed sorted from mat	07-14-99	A	0	A	-28.48	9.32		10.28
19	Tualatin River at RM 26.9 (Scholls)	Woody material	Twigs sorted from duckweed mat	07-14-99	A	0	A	-25.92	5.76		24.79
19	Tualatin River at RM 26.9 (Scholls)	Woody material	Twigs sorted from duckweed mat	07-14-99	B	0	A	-26.67	5.38		24.11
19	Tualatin River at RM 26.9 (Scholls)	Woody material	Twigs sorted from duckweed mat	07-14-99	C	0	A	-26.75	4.94		23.90
20	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	07-14-99	A	0	A	-28.10	6.48		8.92
20	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	07-14-99	A	1	A	-28.06	6.31		9.10
20	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	07-14-99	B	0	A	-28.24	6.31		8.89
20	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	07-14-99	C	0	A	-28.17	6.57		9.04
21	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	07-14-99	A	0	A	-26.46	5.01		12.11	E
21	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	07-14-99	B	0	A	-26.84	4.94		11.38	E
21	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	07-14-99	C	0	A	-26.93	4.47		11.63	E
22	Gales Creek at old Hwy 47	Suspended sediment	—	07-16-99	A	0	A	-26.32	4.59		7.68
22	Gales Creek at old Hwy 47	Suspended sediment	—	07-16-99	B	0	A	-26.47	4.80		7.17
22	Gales Creek at old Hwy 47	Suspended sediment	—	07-16-99	C	0	A	-26.38	4.40		7.27
23	Gales Creek at old Hwy 47	Bed sediment	—	07-16-99	A	0	A	-27.08	2.31	L	11.01	E
23	Gales Creek at old Hwy 47	Bed sediment	—	07-16-99	A	0	U	-27.28	2.36	L	15.33	E
23	Gales Creek at old Hwy 47	Bed sediment	—	07-16-99	B	0	A	-27.19	2.51	L	13.98	E
23	Gales Creek at old Hwy 47	Bed sediment	—	07-16-99	C	0	A	-27.04	3.29	L	9.78	E
24	Dairy Creek at Hwy 8	Suspended sediment	—	07-16-99	A	0	A	-29.51	6.26		7.97
24	Dairy Creek at Hwy 8	Suspended sediment	—	07-16-99	B	0	A	-29.56	6.10		7.56
24	Dairy Creek at Hwy 8	Suspended sediment	—	07-16-99	C	0	A	-29.70	6.13		7.37
25	Dairy Creek at Hwy 8	Bed sediment	—	07-16-99	A	0	A	-27.04	4.24	L	12.99	E
25	Dairy Creek at Hwy 8	Bed sediment	—	07-16-99	B	0	A	-26.63	4.37		15.18	E
25	Dairy Creek at Hwy 8	Bed sediment	—	07-16-99	C	0	A	-27.08	—		14.26	E
26	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	07-16-99	A	0	A	-27.31	3.72	L	11.01	E
26	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	07-16-99	B	0	A	-27.87	4.13	L	8.18	E
26	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	07-16-99	C	0	A	-27.72	4.44	L	9.29	E
27	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	07-16-99	A	0	A	-26.86	2.76	L	11.76	E
27	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	07-16-99	B	0	A	-27.20	2.97	L	13.73	E
27	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	07-16-99	C	0	A	-27.12	2.39	L	13.98	E
28	Rock Creek at Hwy 8	Suspended sediment	—	07-16-99	A	0	A	-29.16	4.17	L	9.40
28	Rock Creek at Hwy 8	Suspended sediment	—	07-16-99	B	0	A	-29.08	5.75		8.90
28	Rock Creek at Hwy 8	Suspended sediment	—	07-16-99	C	0	A	-29.40	5.73		8.21
29	Rock Creek at Hwy 8	Bed sediment	—	07-16-99	A	0	A	-27.99	6.01		12.84
29	Rock Creek at Hwy 8	Bed sediment	—	07-16-99	B	0	A	-27.90	5.42		13.37
29	Rock Creek at Hwy 8	Bed sediment	—	07-16-99	C	0	A	-28.04	6.00		13.15
30	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	07-16-99	A	0	A	-35.30	9.19		5.07
30	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	07-16-99	B	0	A	-35.45	9.28		4.89
30	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	07-16-99	C	0	A	-35.49	8.86		4.92
31	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	07-19-99	A	0	A	-37.36	9.13		4.96
31	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	07-19-99	B	0	A	-37.60	8.95		5.10
31	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	07-19-99	C	0	A	-37.43	8.96		5.05
32	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	07-19-99	A	0	A	-37.64	8.71		5.01
32	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	07-19-99	A	0	U	-37.61	9.08		5.47
32	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	07-19-99	B	0	A	-37.63	9.46		4.97
32	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	07-19-99	C	0	A	-37.69	9.63		4.84
33	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	07-19-99	A	0	A	-27.29	—		11.48
33	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	07-19-99	A	0	U	-26.81	6.42		9.02
33	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	07-19-99	B	0	A	-28.06	5.15		10.25
33	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	07-19-99	C	0	A	-27.49	5.63		11.60
34	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Spirogyra	07-19-99	A	0	A	-17.25	7.02		9.15
34	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Spirogyra	07-19-99	A	1	A	-17.49	6.61		9.15
34	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Spirogyra	07-19-99	B	0	A	-17.33	6.97		9.05
35	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	07-19-99	A	0	A	-34.95	8.15		6.10
35	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	07-19-99	B	0	A	-35.04	8.32		6.47
35	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	07-19-99	C	0	A	-35.17	8.28		6.17
36	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	07-19-99	A	0	A	-35.10	8.60	L	5.78
36	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	07-19-99	B	0	A	-34.78	9.38	L	5.78
36	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	07-19-99	C	0	A	-35.09	9.32	L	6.23
37	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	07-19-99	A	0	A	-34.95	7.34		5.72
37	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	07-19-99	A	0	U	—	6.82		6.91
37	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	07-19-99	B	0	A	-35.10	7.71		5.60
37	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	07-19-99	C	0	A	-34.97	—		5.54
37	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	07-19-99	C	1	A	-34.89	—		5.62
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	A	0	U	-28.15	5.73	L	10.50	E
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	A	1	U	-28.44	5.46	L	13.00	E
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	B	0	U	-28.34	5.86	L	10.67	E
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	B	1	U	-27.87	5.11	L	13.80	E
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	C	0	U	-28.22	5.23	L	12.40	E
38	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	07-19-99	C	1	U	-27.95	5.51	L	11.50	E
39	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Unsorted duckweed mat	07-19-99	A	0	A	-28.69	3.49		23.63
39	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Unsorted duckweed mat	07-19-99	A	0	U	-28.68	2.91		24.33
39	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Unsorted duckweed mat	07-19-99	B	0	A	-28.18	3.24		22.68
39	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Unsorted duckweed mat	07-19-99	C	0	A	-28.46	3.15		22.64
40	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Duckweed sorted from mat	07-19-99	A	0	A	-29.89	6.96		9.68
40	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Duckweed sorted from mat	07-19-99	B	0	A	-29.83	6.85		9.64
40	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Duckweed sorted from mat	07-19-99	C	0	A	-29.83	6.88		9.60
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	A	0	A	-25.80	2.14		25.75
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	A	1	A	-27.60	2.20		26.34
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	A	0	U	-29.11	2.32		25.56
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	A	1	U	-28.31	2.25		25.32
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	B	0	A	-28.24	2.59		25.61
41	Tualatin River at RM 9.9 (Cook Park)	Woody material	Twigs sorted from duckweed mat	07-19-99	C	0	A	-27.86	2.30		25.50
42	Tualatin River at RM 9.9 (Cook Park)	Coniferous litter	Cones sorted from duckweed mat	07-19-99	A	0	A	-26.57	1.19	L	77.20
42	Tualatin River at RM 9.9 (Cook Park)	Coniferous litter	Cones sorted from duckweed mat	07-19-99	B	0	A	-26.57	0.60	L	84.49
42	Tualatin River at RM 9.9 (Cook Park)	Coniferous litter	Cones sorted from duckweed mat	07-19-99	C	0	A	-26.52	0.36	L	71.08
43	Tualatin River at RM 9.9 (Cook Park)	Soil	A-horizon from bank with slump	07-19-99	A	0	A	-26.03	1.02		26.91
43	Tualatin River at RM 9.9 (Cook Park)	Soil	A-horizon from bank with slump	07-19-99	B	0	A	-26.04	1.15		24.73
43	Tualatin River at RM 9.9 (Cook Park)	Soil	A-horizon from bank with slump	07-19-99	C	0	A	-26.24	1.98		25.30
44	Tualatin River at RM 9.9 (Cook Park)	Soil	Bottom of slump at water edge	07-19-99	A	0	U	-27.29	4.02	L	11.50	E
44	Tualatin River at RM 9.9 (Cook Park)	Soil	Bottom of slump at water edge	07-19-99	B	0	U	-27.03	6.95	L	10.00	E
44	Tualatin River at RM 9.9 (Cook Park)	Soil	Bottom of slump at water edge	07-19-99	C	0	U	-27.03	4.88	L	13.00	E
44	Tualatin River at RM 9.9 (Cook Park)	Soil	Bottom of slump at water edge	07-19-99	C	1	U	—	5.30	L	14.50	E
45	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	07-19-99	A	0	A	-34.90	10.23		6.49
45	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	07-19-99	B	0	A	-34.98	10.64		6.51
45	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	07-19-99	C	0	A	-34.75	10.87		6.56
46	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	07-19-99	A	0	A	-34.94	10.43	L	6.95
46	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	07-19-99	B	0	A	-34.89	10.92	L	6.45
46	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	07-19-99	C	0	A	-34.67	11.30	L	6.27
47	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	07-19-99	A	0	A	-35.68	11.72		6.08
47	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	07-19-99	B	0	A	-35.87	11.80		6.08
47	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	07-19-99	C	0	A	-35.86	12.66		5.95
47	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	07-19-99	C	1	A	-35.88	12.57		5.75
48	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	07-19-99	A	0	A	-27.08	7.07	L	10.03	E
48	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	07-19-99	A	0	U	-27.68	5.83	L	12.00	E
48	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	07-19-99	B	0	A	-27.78	4.76	L	12.00	E
48	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	07-19-99	C	0	A	-28.81	4.60	L	13.19	E
49	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction that settled after 24 hours	07-21-99	A	0	A	-29.86	6.36		7.07
49	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction that settled after 24 hours	07-21-99	B	0	A	-29.52	—		7.67
49	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction that settled after 24 hours	07-21-99	B	0	U	-30.45	5.30		8.31
49	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction that settled after 24 hours	07-21-99	C	0	A	-29.33	5.01		8.02
50	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	Aphanizomenon floating on sample	07-21-99	A	0	A	-34.35	7.68		3.91
50	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	Aphanizomenon floating on sample	07-21-99	B	0	A	-34.62	7.77		3.44
50	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	Aphanizomenon floating on sample	07-21-99	C	0	A	-34.29	7.30		3.89
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	A	0	A	-29.63	—		9.86
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	A	1	A	-29.80	—		10.57
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	A	0	U	-29.96	—		10.54
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	B	0	A	-29.26	—		11.19
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	C	0	A	-28.88	—		11.07
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	C	0	U	-29.06	—		10.00
51	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	07-21-99	C	1	U	-28.96	—	L	10.88
52	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	07-21-99	A	0	A	-30.41	5.43	L	8.36
52	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	07-21-99	B	0	A	-30.20	6.34	L	8.53
52	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	07-21-99	C	0	A	-30.73	6.17	L	9.00
53	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	07-21-99	A	0	A	-27.28	4.95	L	16.80	E
53	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	07-21-99	B	0	A	-26.66	5.53		14.47	E
53	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	07-21-99	C	0	A	-27.59	5.11		12.50	E
54	Tualatin River at RM 16.2 (Elsner Bridge)	Woody material	Twigs removed from bed sediment	07-21-99	A	0	A	-26.61	4.70	L	78.38
54	Tualatin River at RM 16.2 (Elsner Bridge)	Woody material	Twigs removed from bed sediment	07-21-99	B	0	A	-27.34	4.23	L	—
54	Tualatin River at RM 16.2 (Elsner Bridge)	Woody material	Twigs removed from bed sediment	07-21-99	B	1	A	-27.45	4.86	L	—
54	Tualatin River at RM 16.2 (Elsner Bridge)	Woody material	Twigs removed from bed sediment	07-21-99	C	0	A	-26.64	4.45	L	79.05
55	Fanno Creek at Durham City Park	Suspended sediment	Fraction that settled after 24 hours	07-21-99	A	0	A	-28.89	5.57		11.34
55	Fanno Creek at Durham City Park	Suspended sediment	Fraction that settled after 24 hours	07-21-99	A	0	U	-29.55	5.79		11.33
55	Fanno Creek at Durham City Park	Suspended sediment	Fraction that settled after 24 hours	07-21-99	B	0	A	-28.63	4.26		12.05
55	Fanno Creek at Durham City Park	Suspended sediment	Fraction that settled after 24 hours	07-21-99	C	0	A	-28.95	3.67		11.63
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	A	0	A	-28.42	7.52	L	10.13
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	A	0	U	-29.50	7.01	L	10.70
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	B	0	A	-28.52	5.95	L	11.21
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	C	0	A	-28.24	5.26	L	12.86
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	C	0	U	-29.59	6.79	L	10.15
56	Fanno Creek at Durham City Park	Seston, >80 μm	—	07-21-99	C	1	U	-28.16	5.05	L	12.12
57	Fanno Creek at Durham City Park	Seston, 80–202 μm	—	07-21-99	A	0	A	-28.19	5.17	L	12.17
57	Fanno Creek at Durham City Park	Seston, 80–202 μm	—	07-21-99	B	0	A	-28.35	5.50	L	12.63
57	Fanno Creek at Durham City Park	Seston, 80–202 μm	—	07-21-99	C	0	A	-28.69	5.46	L	12.30
58	Fanno Creek at Durham City Park	Bed sediment	—	07-21-99	A	0	A	-27.81	4.14	L	11.01	E
58	Fanno Creek at Durham City Park	Bed sediment	—	07-21-99	B	0	A	-28.05	3.83	L	12.50	E
58	Fanno Creek at Durham City Park	Bed sediment	—	07-21-99	C	0	A	-28.11	3.01	L	15.95	E
58	Fanno Creek at Durham City Park	Bed sediment	—	07-21-99	C	1	A	-28.05	3.29	L	10.52	E
59	Fanno Creek at Durham City Park	Bed sediment	Top 10 cm, both oxic and anoxic fractions	07-21-99	A	0	A	-27.81	3.07		17.03
59	Fanno Creek at Durham City Park	Bed sediment	Top 10 cm, both oxic and anoxic fractions	07-21-99	B	0	A	-28.03	3.76		13.80
59	Fanno Creek at Durham City Park	Bed sediment	Top 10 cm, both oxic and anoxic fractions	07-21-99	C	0	A	-28.13	3.87		13.98
60	Fanno Creek at Durham City Park	Leaf litter	Redtwig dogwood leaves in stream	07-21-99	A	0	A	-29.50	4.20		30.01
60	Fanno Creek at Durham City Park	Leaf litter	Redtwig dogwood leaves in stream	07-21-99	B	0	A	-29.61	4.56		28.44
60	Fanno Creek at Durham City Park	Leaf litter	Redtwig dogwood leaves in stream	07-21-99	C	0	A	-29.68	4.63		28.81
61	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves in stream	07-21-99	A	0	A	-26.76	3.32		48.56
61	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves in stream	07-21-99	B	0	A	-26.86	3.25		42.84
61	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves in stream	07-21-99	C	0	A	-26.78	2.94		40.81
62	Fanno Creek at Durham City Park	Decomposed terrestrial detritus	Decomposed leaves and twigs in stream	07-21-99	A	0	A	-27.82	4.52		21.02
62	Fanno Creek at Durham City Park	Decomposed terrestrial detritus	Decomposed leaves and twigs in stream	07-21-99	B	0	A	-27.64	5.01		18.71
62	Fanno Creek at Durham City Park	Decomposed terrestrial detritus	Decomposed leaves and twigs in stream	07-21-99	C	0	A	-28.10	5.24		17.37
63	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves from trail	07-21-99	A	0	A	-27.09	1.18		16.10
63	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves from trail	07-21-99	B	0	A	—	1.02		—
63	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves from trail	07-21-99	B	0	U	-27.86	0.61		—
63	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash leaves from trail	07-21-99	C	0	A	-26.93	0.72		18.10
64	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash seed pods from trail	07-21-99	A	0	A	-26.36	0.68		39.13
64	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash seed pods from trail	07-21-99	A	1	A	-26.38	1.48		44.85
64	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash seed pods from trail	07-21-99	A	0	U	-28.27	0.57		39.87
64	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash seed pods from trail	07-21-99	B	0	A	-26.43	0.65		40.49
64	Fanno Creek at Durham City Park	Leaf litter	Oregon Ash seed pods from trail	07-21-99	C	0	A	-26.56	0.63		36.18
65	Fanno Creek at Durham City Park	Periphyton	Cladophera	07-21-99	A	0	A	-39.70	4.59		6.87
65	Fanno Creek at Durham City Park	Periphyton	Cladophera	07-21-99	B	0	A	-39.63	4.54		6.86
65	Fanno Creek at Durham City Park	Periphyton	Cladophera	07-21-99	C	0	A	-39.75	4.55		6.83
66	Fanno Creek at Durham City Park	Periphyton	Cladophera	07-21-99	A	0	A	-26.70	8.47		6.92
67	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	07-19-99	A	0	A	-34.12	5.58		9.60
67	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	07-19-99	B	0	A	-34.07	5.34		9.54
67	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	07-19-99	C	0	A	-34.23	5.58		9.20
68	Onion Flat (Cipole Road and Hwy 99W)	Soil	agricultural field, tilled, not planted	07-21-99	A	0	A	-27.90	5.01		14.49
68	Onion Flat (Cipole Road and Hwy 99W)	Soil	agricultural field, tilled, not planted	07-21-99	B	0	A	—	4.21		15.60
68	Onion Flat (Cipole Road and Hwy 99W)	Soil	agricultural field, tilled, not planted	07-21-99	C	0	A	-27.84	5.21		14.65
69	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	08-04-99	A	0	A	-27.04	6.55		9.14
69	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	08-04-99	B	0	A	-27.38	5.63		9.46
69	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	08-04-99	C	0	A	-27.22	6.17		10.05
70	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaves	08-04-99	A	0	A	-25.34	2.53		53.91
70	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaves	08-04-99	B	0	A	-24.82	1.84		57.66
70	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaves	08-04-99	C	0	A	-25.02	1.68		58.39
71	Tualatin Nature Park	Coniferous litter	Mixed Western Red Cedar litter	08-04-99	A	0	A	-24.75	-2.56		33.25
71	Tualatin Nature Park	Coniferous litter	Mixed Western Red Cedar litter	08-04-99	B	0	A	-25.07	-2.59		30.72
71	Tualatin Nature Park	Coniferous litter	Mixed Western Red Cedar litter	08-04-99	C	0	A	-24.91	-2.44		31.23
72	Tualatin Nature Park	Coniferous litter	Mixed Douglas Fir litter	08-04-99	A	0	A	-27.85	-2.47		27.48
72	Tualatin Nature Park	Coniferous litter	Mixed Douglas Fir litter	08-04-99	B	0	A	-27.97	-2.68		26.98
72	Tualatin Nature Park	Coniferous litter	Mixed Douglas Fir litter	08-04-99	C	0	A	-27.66	-2.72		27.57
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	A	0	A	-24.24	9.24		4.82
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	A	0	U	-23.71	10.00		5.17
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	A	1	U	-26.58	11.47		4.89
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	B	0	A	-25.62	10.80		6.67
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	C	0	A	-24.63	11.19		4.50
73	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	C	0	U	-23.81	10.09		5.55
74	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	A	0	A	-26.07	9.08	L	4.67	E
74	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	B	0	A	-25.96	9.26	L	4.39	E
74	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	07-14-99	C	0	A	-25.99	9.45	L	4.60	E
76	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	A	0	A	-33.91	6.70		4.75
76	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	B	0	A	-33.82	6.54		4.78
76	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	C	0	A	-33.84	6.57		4.79
77	Fanno Creek at Durham City Park	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	A	0	A	-28.32	4.91		8.55	E
77	Fanno Creek at Durham City Park	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	B	0	A	-28.50	5.12	L	8.48	E
77	Fanno Creek at Durham City Park	Suspended sediment	Fraction remaining suspended after 24 hours	07-21-99	C	0	A	-28.40	5.15		9.04	E
101	Henry Hagg Lake	Seston, >80 μm	—	09-10-99	A	0	A	-30.12	8.43		3.84
101	Henry Hagg Lake	Seston, >80 μm	—	09-10-99	B	0	A	-30.14	8.80		3.70
101	Henry Hagg Lake	Seston, >80 μm	—	09-10-99	C	0	A	-30.28	8.17		3.96
102	Henry Hagg Lake	Seston, 80–202 μm	—	09-10-99	A	0	A	-31.14	6.36		5.36
102	Henry Hagg Lake	Seston, 80–202 μm	—	09-10-99	B	0	A	-31.20	6.67		5.26
102	Henry Hagg Lake	Seston, 80–202 μm	—	09-10-99	C	0	A	-31.31	6.72		5.23
103	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	09-10-99	A	0	A	-30.93	4.26		11.90
103	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	09-10-99	B	0	A	-31.23	3.95		12.00	E
103	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	09-10-99	C	0	A	-31.07	4.15		11.89	E
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	A	0	A	-26.79	4.00		14.14
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	A	1	A	-28.21	3.85		14.27
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	A	0	U	-28.07	3.95		13.18
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	B	0	A	-27.21	4.22		15.06
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	B	0	U	-28.27	3.87		12.91
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	C	0	A	-28.11	3.91		15.40	E
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	C	0	U	-28.17	3.85		13.40
104	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	09-10-99	C	1	U	-28.24	3.94		12.27
105	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	09-11-99	A	0	A	-33.49	8.24		6.90
105	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	09-11-99	B	0	A	-32.83	7.90		7.17
105	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	09-11-99	C	0	A	-33.26	8.00		7.12
106	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	09-11-99	A	0	A	-32.80	7.43		7.83
106	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	09-11-99	B	0	A	-33.19	7.84		7.48
106	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	09-11-99	C	0	A	-33.00	7.49		7.47
107	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	09-11-99	A	0	A	-34.15	7.51		7.26
107	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	09-11-99	B	0	A	-33.95	7.17		7.62
107	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	09-11-99	B	1	A	-33.99	7.38		7.44
107	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	09-11-99	C	0	A	-34.14	7.35		7.54
108	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	09-11-99	A	0	A	-30.03	6.32	L	—
108	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	09-11-99	A	0	U	-30.98	5.78	L	15.60	E
108	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	09-11-99	B	0	A	-31.08	4.07	L	14.47	E
108	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	09-11-99	C	0	A	-30.22	4.46	L	14.30	E
109	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	09-11-99	A	0	A	-35.45	4.33		8.49
109	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	09-11-99	B	0	A	-35.47	4.52		8.50
109	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	09-11-99	C	0	A	-35.58	3.98		8.79
110	Tualatin River at RM 20.3	Seston, >80 μm	—	09-13-99	A	0	A	-29.87	4.09		10.42
110	Tualatin River at RM 20.3	Seston, >80 μm	—	09-13-99	B	0	A	-29.49	4.28		11.07
110	Tualatin River at RM 20.3	Seston, >80 μm	—	09-13-99	C	0	A	-29.18	4.11		11.91
110	Tualatin River at RM 20.3	Seston, >80 μm	—	09-13-99	C	1	A	-29.56	4.20		9.91
111	Tualatin River at RM 20.3	Seston, 80–202 μm	—	09-13-99	A	0	A	-31.04	5.41		10.05
111	Tualatin River at RM 20.3	Seston, 80–202 μm	—	09-13-99	B	0	A	-30.61	5.85		11.26
111	Tualatin River at RM 20.3	Seston, 80–202 μm	—	09-13-99	C	0	A	-30.94	6.37		9.32
112	Tualatin River at RM 20.3	Suspended sediment	—	09-13-99	A	0	A	-30.12	7.12		13.78
112	Tualatin River at RM 20.3	Suspended sediment	—	09-13-99	B	0	A	-31.58	6.38		11.94
112	Tualatin River at RM 20.3	Suspended sediment	—	09-13-99	C	0	A	-30.71	6.70		12.45
113	Tualatin River at RM 20.3	Bed sediment	—	09-13-99	A	0	A	-28.80	—		15.26
113	Tualatin River at RM 20.3	Bed sediment	—	09-13-99	A	0	U	-29.54	5.10		12.60
113	Tualatin River at RM 20.3	Bed sediment	—	09-13-99	A	1	U	-29.53	5.56		13.36
113	Tualatin River at RM 20.3	Bed sediment	—	09-13-99	B	0	A	-29.33	5.41		13.78
113	Tualatin River at RM 20.3	Bed sediment	—	09-13-99	C	0	A	-29.28	5.87		12.99
114	Tualatin River at RM 20.3	Bed sediment	Anoxic blue-gray fraction	09-13-99	A	0	A	-28.52	5.36	L	13.19	E
114	Tualatin River at RM 20.3	Bed sediment	Anoxic blue-gray fraction	09-13-99	A	1	A	-28.69	4.99	L	12.40	E
114	Tualatin River at RM 20.3	Bed sediment	Anoxic blue-gray fraction	09-13-99	B	0	A	-28.99	6.11	L	12.00	E
114	Tualatin River at RM 20.3	Bed sediment	Anoxic blue-gray fraction	09-13-99	C	0	A	-28.69	5.01	L	12.99	E
115	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	09-13-99	A	0	A	-31.69	7.67		10.52
115	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	09-13-99	B	0	A	-32.74	—		9.82
115	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	09-13-99	C	0	A	-32.38	6.49		10.15
116	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	09-13-99	A	0	A	-31.30	5.91	L	8.42
116	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	09-13-99	B	0	A	-31.15	6.08		8.56
116	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	09-13-99	C	0	A	-30.76	5.88		8.86
117	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	09-13-99	A	0	A	-31.69	6.94	L	8.51
117	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	09-13-99	B	0	A	-31.48	6.66	L	9.30
117	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	09-13-99	B	1	A	-31.61	6.55	L	9.27
117	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	09-13-99	C	0	A	-30.85	6.59	L	9.80
118	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	09-13-99	A	0	A	-28.74	6.16		14.14
118	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	09-13-99	B	0	A	-28.67	5.98		14.28
118	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	09-13-99	C	0	A	-28.75	6.02		13.88
119	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	09-15-99	A	0	A	-29.02	6.61	L	12.08
119	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	09-15-99	B	0	A	-28.84	6.34	L	11.99
119	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	09-15-99	C	0	A	-28.92	6.19		12.01
120	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	09-15-99	A	0	A	-28.93	5.66		12.24
120	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	09-15-99	B	0	A	-29.12	5.92		12.39
120	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	09-15-99	C	0	A	-28.91	5.63		12.79
120	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	09-15-99	C	1	A	-29.03	5.79		12.19
121	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-15-99	A	0	A	-29.69	6.47		11.67
121	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-15-99	B	0	A	-27.86	7.59		12.88
121	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-15-99	B	0	U	-27.76	7.29		12.48
121	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-15-99	C	0	A	-28.56	—		12.59
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	A	0	A	-29.32	—		17.08	E
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	A	0	U	-29.78	5.66	L	15.00	E
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	A	1	U	-29.61	5.51		14.63	E
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	B	0	A	-29.43	—		16.23	E
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	B	0	U	-29.63	5.79		12.67	E
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	B	1	U	-29.43	5.88		14.00
122	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	09-15-99	C	0	A	-29.65	5.45		15.09	E
123	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-15-99	A	0	A	-33.86	13.12		8.00
123	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-15-99	B	0	A	-33.63	12.36		8.12
123	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-15-99	C	0	A	-33.54	12.90		8.40
124	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	09-15-99	A	0	A	-37.69	16.74		4.95
124	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	09-15-99	A	1	A	-37.72	16.60		4.89
124	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	09-15-99	B	0	A	-37.59	16.78		4.83
124	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	09-15-99	C	0	A	-37.64	16.71		4.85
125	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	09-15-99	A	0	A	-37.91	17.17		4.68
125	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	09-15-99	B	0	A	-38.37	—		4.49
125	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	09-15-99	C	0	A	-38.40	17.54		4.47
126	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	09-15-99	A	0	A	-29.37	6.55		11.51
126	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	09-15-99	B	0	A	-29.42	6.28		11.27
126	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	09-15-99	C	0	A	-29.46	6.05		10.78
201	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	02-08-00	A	0	A	-30.48	4.56		9.86	E
201	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	02-08-00	B	0	A	-31.24	4.38		11.61	E
201	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	02-08-00	C	0	A	-30.40	5.73		9.70	E
202	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	02-04-00	A	0	A	-32.32	4.72	L	13.98	E
202	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	02-04-00	B	0	A	-31.57	4.11	L	12.00	E
202	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	02-04-00	B	1	A	-31.97	2.67	L	14.96	E
202	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	02-04-00	B	0	U	-31.68	3.72	L	14.47	E
202	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	02-04-00	C	0	A	-32.49	5.04	L	13.98	E
203	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	02-04-00	A	0	A	-30.74	4.28	L	15.21	E
203	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	02-04-00	B	0	A	-30.64	—		15.70	E
203	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	02-04-00	C	0	A	-31.19	4.58	L	17.27	E
203	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	02-04-00	C	1	A	-31.29	—		13.98	E
203	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	02-04-00	C	0	U	-31.21	4.02	L	14.25	E
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	A	0	A	-27.87	4.65	L	25.24
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	A	1	A	-27.50	5.34		27.62
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	B	0	A	-27.44	4.73		29.25
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	B	1	A	-27.80	4.91	L	28.01
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	C	0	A	-27.53	5.59		29.24
204	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Woody debris removed	02-04-00	C	1	A	-27.71	3.79	L	27.43
206	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	02-04-00	A	0	U	-30.78	4.20	L	11.80	E
206	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	02-04-00	B	0	A	-30.89	2.81	L	13.98	E
206	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	02-04-00	C	0	A	-31.22	4.56		13.73	E
207	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	02-04-00	A	0	A	-28.54	4.12	L	23.19	E
207	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	02-04-00	B	0	A	-28.25	3.76	L	24.67	E
207	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	02-04-00	B	1	A	-28.64	4.11	L	23.02	E
207	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	02-04-00	C	0	A	-28.78	4.30	L	22.07	E
208	Gales Creek at old Hwy 47	Suspended sediment	—	02-07-00	A	0	A	-27.73	3.75	L	30.76	E
208	Gales Creek at old Hwy 47	Suspended sediment	—	02-07-00	B	0	A	-29.76	—		28.29	E
208	Gales Creek at old Hwy 47	Suspended sediment	—	02-07-00	C	0	A	-29.15	3.45	L	25.82	E
209	Dairy Creek at Hwy 8	Suspended sediment	—	02-07-00	A	0	A	-31.28	—		12.13	E
209	Dairy Creek at Hwy 8	Suspended sediment	—	02-07-00	A	0	U	-31.40	4.04	L	13.80	E
209	Dairy Creek at Hwy 8	Suspended sediment	—	02-07-00	A	1	U	-32.55	3.45	L	13.78	E
209	Dairy Creek at Hwy 8	Suspended sediment	—	02-07-00	B	0	A	-31.44	3.94	L	13.55	E
209	Dairy Creek at Hwy 8	Suspended sediment	—	02-07-00	C	0	A	-31.16	4.05	L	11.86	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	A	0	A	-30.94	3.16		13.11	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	A	0	U	-28.89	3.21	L	13.00	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	A	1	U	-29.47	3.93	L	14.46	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	B	0	A	-29.41	2.68	L	15.95	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	C	0	A	-29.42	4.41	L	15.16	E
210	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	02-07-00	C	1	A	-29.14	4.25		13.24	E
211	Rock Creek at Hwy 8	Suspended sediment	—	02-07-00	A	0	U	-32.37	5.01	L	16.50	E
211	Rock Creek at Hwy 8	Suspended sediment	—	02-07-00	A	1	U	-33.34	4.63	L	14.50	E
211	Rock Creek at Hwy 8	Suspended sediment	—	02-07-00	B	0	A	-32.27	4.42	L	15.95	E
211	Rock Creek at Hwy 8	Suspended sediment	—	02-07-00	C	0	A	-32.06	4.28	L	13.32	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	A	0	A	-31.12	4.48	L	14.57	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	B	0	A	-30.95	4.28	L	13.19	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	B	1	A	-31.18	4.05	L	15.46	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	C	0	A	-32.39	3.58	L	12.66	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	C	0	U	-31.63	4.45	L	13.67	E
212	Fanno Creek at Durham Road	Suspended sediment	—	02-07-00	C	1	U	-32.66	5.19	L	13.33	E
301	Henry Hagg Lake	Seston, >80 μm	—	06-03-00	A	0	U	-26.41	3.41		9.97
301	Henry Hagg Lake	Seston, >80 μm	—	06-03-00	B	0	U	-26.26	3.41		9.45
301	Henry Hagg Lake	Seston, >80 μm	—	06-03-00	C	0	U	-26.52	3.13		9.98
301	Henry Hagg Lake	Seston, >80 μm	—	06-03-00	D	0	U	-26.28	3.55		10.00
302	Henry Hagg Lake	Seston, 80–202 μm	—	06-03-00	A	0	U	-26.07	2.96		8.61
302	Henry Hagg Lake	Seston, 80–202 μm	—	06-03-00	B	0	U	-26.28	2.98		8.21
302	Henry Hagg Lake	Seston, 80–202 μm	—	06-03-00	C	0	U	-25.85	2.98		9.06
302	Henry Hagg Lake	Seston, 80–202 μm	—	06-03-00	D	0	U	-27.17	3.18	L	8.64
303	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	06-05-00	A	0	U	-31.15	5.56		9.46
303	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	06-05-00	B	0	U	-31.27	5.26		9.91
303	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	06-05-00	B	1	U	-31.06	5.40		10.27
303	Tualatin River at RM 38.4 (Rood Bridge)	Suspended sediment	—	06-05-00	C	0	U	-31.07	5.34		10.00
304	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	06-05-00	A	0	U	-28.18	4.27		13.10
304	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	06-05-00	B	0	U	-28.05	4.16		13.36
304	Tualatin River at RM 38.4 (Rood Bridge)	Bed sediment	—	06-05-00	C	0	U	-28.12	3.76		14.20
305	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	06-03-00	A	0	U	-32.67	9.31		7.71
305	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	06-03-00	B	0	U	-32.53	8.79		7.57
305	Tualatin River at RM 9.9 (Cook Park)	Seston, >80 μm	—	06-03-00	C	0	U	-32.45	8.96		7.52
306	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	06-03-00	A	0	U	-32.68	8.63		7.49
306	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	06-03-00	B	0	U	-32.43	9.18		7.67
306	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	06-03-00	C	0	U	-32.59	8.43		7.82
306	Tualatin River at RM 9.9 (Cook Park)	Seston, 80–202 μm	—	06-03-00	C	1	U	-32.52	8.46		7.70
307	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	06-03-00	A	0	U	-35.06	9.45		6.52
307	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	06-03-00	B	0	U	-34.99	9.53		6.80
307	Tualatin River at RM 9.9 (Cook Park)	Suspended sediment	—	06-03-00	C	0	U	-35.17	9.51		6.80
308	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	06-03-00	A	0	U	-28.45	4.97	L	13.17	E
308	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	06-03-00	B	0	U	-28.88	5.21	L	13.86	E
308	Tualatin River at RM 9.9 (Cook Park)	Bed sediment	—	06-03-00	C	0	U	-28.68	5.64	L	13.57	E
309	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Decomposed duckweed	06-03-00	A	0	U	-29.19	7.62		10.43
309	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Decomposed duckweed	06-03-00	B	0	U	-29.36	7.57		10.98
309	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Decomposed duckweed	06-03-00	C	0	U	-28.11	—		11.02
309	Tualatin River at RM 9.9 (Cook Park)	Duckweed	Decomposed duckweed	06-03-00	C	1	U	-28.27	6.06		11.21
310	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	06-03-00	A	0	U	-36.24	6.60		8.10
310	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	06-03-00	A	1	U	-36.19	6.69		8.28
310	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	06-03-00	B	0	U	-36.19	7.00		8.19
310	Tualatin River at RM 9.4 (Basalt sill)	Periphyton	Cladophera	06-03-00	C	0	U	-36.23	6.95		8.56
311	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	06-03-00	A	0	U	-32.71	9.92		8.10
311	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	06-03-00	B	0	U	-32.51	10.00		8.19
311	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, >80 μm	—	06-03-00	C	0	U	-32.62	10.06		8.28
312	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	06-03-00	A	0	U	-32.60	9.50		8.57
312	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	06-03-00	B	0	U	-32.66	8.80		8.81
312	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Seston, 80–202 μm	—	06-03-00	C	0	U	-32.65	9.16		8.76
313	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	06-03-00	A	0	U	-35.82	11.95	L	6.55
313	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	06-03-00	B	0	U	-34.98	10.81	L	6.62
313	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Suspended sediment	—	06-03-00	B	1	U	-34.85	11.62	L	6.63
314	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	06-03-00	A	0	U	-28.86	5.83	L	13.29	E
314	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	06-03-00	B	0	U	-28.71	6.13	L	13.71	E
314	Tualatin River at RM 8.7 (Boones Ferry Bridge)	Bed sediment	—	06-03-00	C	0	U	-28.86	5.80	L	12.83	E
315	Tualatin River at RM 20.3	Seston, >80 μm	—	06-05-00	A	0	U	-29.43	7.82		13.82
315	Tualatin River at RM 20.3	Seston, >80 μm	—	06-05-00	B	0	U	-29.73	7.68		12.65
315	Tualatin River at RM 20.3	Seston, >80 μm	—	06-05-00	C	0	U	-29.66	8.62		12.79
316	Tualatin River at RM 20.3	Seston, 80–202 μm	—	06-05-00	A	0	U	-29.79	8.08		13.04
316	Tualatin River at RM 20.3	Seston, 80–202 μm	—	06-05-00	B	0	U	-29.77	7.96		13.28
316	Tualatin River at RM 20.3	Seston, 80–202 μm	—	06-05-00	C	0	U	-29.76	6.98		13.54
316	Tualatin River at RM 20.3	Seston, 80–202 μm	—	06-05-00	C	1	U	-29.77	7.51		13.03
317	Tualatin River at RM 20.3	Suspended sediment	—	06-05-00	A	0	U	-32.55	8.80		8.67
317	Tualatin River at RM 20.3	Suspended sediment	—	06-05-00	B	0	U	-32.73	8.81		8.83
317	Tualatin River at RM 20.3	Suspended sediment	—	06-05-00	C	0	U	-32.38	8.69		8.72
318	Tualatin River at RM 20.3	Bed sediment	—	06-05-00	A	0	U	-28.41	5.38		12.71
318	Tualatin River at RM 20.3	Bed sediment	—	06-05-00	B	0	U	-28.20	5.38		12.92
318	Tualatin River at RM 20.3	Bed sediment	—	06-05-00	C	0	U	-28.25	5.65		13.17
319	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	06-02-00	B	0	U	-30.51	10.84		10.95
319	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	06-02-00	B	1	U	-30.22	9.82		10.92
319	Tualatin River at RM 16.2 (Elsner Bridge)	Suspended sediment	—	06-02-00	C	0	U	-29.99	11.24		11.38
320	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	06-02-00	A	0	U	-29.41	10.09		10.56
320	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	06-02-00	B	0	U	-29.04	10.30		11.40
320	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, >80 μm	—	06-02-00	C	0	U	-29.18	10.35		11.46
321	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	06-02-00	A	0	U	-31.65	10.03		9.38
321	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	06-02-00	B	0	U	-31.51	10.84	L	9.50
321	Tualatin River at RM 16.2 (Elsner Bridge)	Seston, 80–202 μm	—	06-02-00	C	0	U	-31.70	10.24	L	9.39
322	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	06-02-00	A	0	U	-28.08	5.14		12.69
322	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	06-02-00	B	0	U	-28.05	5.27		12.64
322	Tualatin River at RM 16.2 (Elsner Bridge)	Bed sediment	—	06-02-00	C	0	U	-27.65	5.24		13.69
323	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	06-02-00	A	0	U	-28.82	5.94		15.19
323	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	06-02-00	B	0	U	-29.04	6.81	L	15.17
323	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	06-02-00	B	1	U	-28.94	6.22		15.52
323	Tualatin River at RM 26.9 (Scholls)	Seston, >80 μm	—	06-02-00	C	0	U	-28.90	5.95	L	15.10
324	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	06-02-00	A	0	U	-29.07	5.79	L	15.13
324	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	06-02-00	B	0	U	-29.15	6.21	L	15.30
324	Tualatin River at RM 26.9 (Scholls)	Seston, 80–202 μm	—	06-02-00	C	0	U	-29.11	4.66	L	15.36
325	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	06-02-00	A	0	U	-31.30	7.10		5.90
325	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	06-02-00	B	0	U	-30.72	7.01		6.29
325	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	06-02-00	C	0	U	-31.38	7.04		5.65
326	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	06-02-00	A	0	U	-27.54	5.18		7.89
326	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	06-02-00	B	0	U	-28.25	5.54		7.50
326	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	06-02-00	C	0	U	-27.40	5.09		9.32
326	Tualatin River at RM 26.9 (Scholls)	Bed sediment	—	06-02-00	C	1	U	-28.02	5.23		7.78
327	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	06-02-00	A	0	U	-33.59	12.22		8.93
327	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	06-02-00	B	0	U	-33.70	12.16		9.08
327	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	06-02-00	C	0	U	-33.24	11.92		9.33
328	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	06-02-00	A	0	U	-37.66	13.46		6.45
328	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	06-02-00	B	0	U	-37.88	13.70		6.44
328	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	06-02-00	C	0	U	-37.88	13.59		6.43
329	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	06-02-00	A	0	U	-37.87	13.69		6.16
329	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	06-02-00	B	0	U	-38.01	13.80		6.05
329	Tualatin River at RM 5.5 (Stafford Road)	Seston, 80–202 μm	—	06-02-00	C	0	U	-38.09	13.73		6.15
330	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	06-02-00	A	0	U	-28.02	5.52		8.18
330	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	06-02-00	A	1	U	-28.20	5.86		7.65
330	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	06-02-00	B	0	U	-28.10	5.79		7.89
330	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	—	06-02-00	C	0	U	-28.28	5.89		—
331	Gales Creek at old Hwy 47	Suspended sediment	—	05-31-00	A	0	U	-29.66	2.97		7.72
331	Gales Creek at old Hwy 47	Suspended sediment	—	05-31-00	B	0	U	-29.77	3.28		8.84
331	Gales Creek at old Hwy 47	Suspended sediment	—	05-31-00	C	0	U	-29.73	2.81		8.33
332	Gales Creek at old Hwy 47	Bed sediment	—	05-31-00	A	0	U	-27.74	1.76		9.11
332	Gales Creek at old Hwy 47	Bed sediment	—	05-31-00	B	0	U	-27.49	1.86		12.50
332	Gales Creek at old Hwy 47	Bed sediment	—	05-31-00	C	0	U	-27.60	1.55		10.88
333	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	05-31-00	A	0	U	-30.26	4.83		8.72
333	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	05-31-00	B	0	U	-30.95	4.66		9.28
333	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	05-31-00	B	1	U	-31.01	4.51		9.11
333	Tualatin River at RM 58.8 (Dilley)	Suspended sediment	—	05-31-00	C	0	U	-30.24	4.54		8.89
334	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	05-31-00	A	0	U	-27.86	2.36		10.00
334	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	05-31-00	B	0	U	-27.78	2.48		13.12
334	Tualatin River at RM 58.8 (Dilley)	Bed sediment	—	05-31-00	C	0	U	-27.68	2.59		10.57
335	Dairy Creek at Hwy 8	Suspended sediment	—	05-31-00	A	0	U	-31.41	3.72		8.50
335	Dairy Creek at Hwy 8	Suspended sediment	—	05-31-00	B	0	U	-31.34	3.70		8.64
335	Dairy Creek at Hwy 8	Suspended sediment	—	05-31-00	C	0	U	-31.26	3.71		5.86
336	Dairy Creek at Hwy 8	Bed sediment	—	05-31-00	A	0	U	-27.78	3.80		15.62
336	Dairy Creek at Hwy 8	Bed sediment	—	05-31-00	B	0	U	-27.87	3.88		13.95
336	Dairy Creek at Hwy 8	Bed sediment	—	05-31-00	C	0	U	-27.76	3.60		15.41
336	Dairy Creek at Hwy 8	Bed sediment	—	05-31-00	C	1	U	-27.68	3.47		17.05
337	Dairy Creek at Hwy 8	Grass	Grass growing in stream	05-31-00	A	0	U	-31.09	4.57		14.73
337	Dairy Creek at Hwy 8	Grass	Grass growing in stream	05-31-00	B	0	U	-31.16	4.62		14.99
337	Dairy Creek at Hwy 8	Grass	Grass growing in stream	05-31-00	C	0	U	-31.02	4.73		13.79
338	Rock Creek at Hwy 8	Suspended sediment	—	05-31-00	A	0	U	-32.07	5.58		7.29
338	Rock Creek at Hwy 8	Suspended sediment	—	05-31-00	B	0	U	-32.05	5.69		6.33
338	Rock Creek at Hwy 8	Suspended sediment	—	05-31-00	C	0	U	-31.92	5.55		6.20
339	Rock Creek at Hwy 8	Bed sediment	—	05-31-00	A	0	U	-28.63	5.58		15.43
339	Rock Creek at Hwy 8	Bed sediment	—	05-31-00	B	0	U	-28.95	5.55		15.00
339	Rock Creek at Hwy 8	Bed sediment	—	05-31-00	C	0	U	-28.78	5.56		14.09
340	Rock Creek at Hwy 8	Periphyton	Species not identified	05-31-00	A	0	U	-42.79	3.57		6.92
340	Rock Creek at Hwy 8	Periphyton	Species not identified	05-31-00	A	1	U	-42.85	3.53		6.94
340	Rock Creek at Hwy 8	Periphyton	Species not identified	05-31-00	B	0	U	-43.05	3.52		6.86
340	Rock Creek at Hwy 8	Periphyton	Species not identified	05-31-00	C	0	U	-42.68	3.52		6.98
341	Rock Creek at Hwy 8	Decomposed terrestrial detritus	Decomposed non-woody plant material in stream	05-31-00	A	0	U	-28.48	5.04		19.24
341	Rock Creek at Hwy 8	Decomposed terrestrial detritus	Decomposed non-woody plant material in stream	05-31-00	B	0	U	-28.59	4.98		19.11
341	Rock Creek at Hwy 8	Decomposed terrestrial detritus	Decomposed non-woody plant material in stream	05-31-00	C	0	U	-29.70	4.97		21.13
342	Fanno Creek at Durham City Park	Suspended sediment	—	05-31-00	A	0	U	-31.72	4.14		7.53
342	Fanno Creek at Durham City Park	Suspended sediment	—	05-31-00	B	0	U	-31.82	4.59		7.31
342	Fanno Creek at Durham City Park	Suspended sediment	—	05-31-00	C	0	U	-31.92	4.56		7.93
343	Fanno Creek at Durham City Park	Bed sediment	—	05-31-00	A	0	U	-29.11	4.30		10.62
343	Fanno Creek at Durham City Park	Bed sediment	—	05-31-00	B	0	U	-28.45	4.13		12.31
343	Fanno Creek at Durham City Park	Bed sediment	—	05-31-00	B	1	U	-28.42	3.97		10.38
343	Fanno Creek at Durham City Park	Bed sediment	—	05-31-00	C	0	U	-28.35	4.11		11.27
344	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	A	0	U	-27.57	10.14	L	8.40	E
344	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	B	0	U	-26.93	10.25		5.94
344	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	C	0	U	-27.72	10.02	L	6.33	E
345	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	A	0	U	-28.56	7.43		6.86	E
345	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	B	0	U	-27.99	7.23		6.11	E
345	Durham Wastewater Treatment Facility	WWTF effluent particulate	—	06-01-00	C	0	U	-27.28	6.79		6.17
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	A	0	A	-35.10	9.59		4.38
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	A	1	A	-35.03	9.57		4.38
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	A	0	U	-35.10	8.96		4.96
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	A	1	U	-35.15	8.88		5.05
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	B	0	A	-34.89	9.47		4.67
401	Tualatin River at RM 5.5 (Stafford Road)	Seston, >80 μm	—	08-13-98	C	0	A	-34.92	9.58		4.31
402	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Species not identified	08-13-98	A	0	A	-32.72	12.49		4.49
402	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Species not identified	08-13-98	B	0	A	-33.36	12.86		4.15
402	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Species not identified	08-13-98	B	1	A	-32.69	13.17		4.39
402	Tualatin River at RM 5.5 (Stafford Road)	Periphyton	Species not identified	08-13-98	C	0	A	-33.81	13.09		3.97
403	Tualatin River at RM 20.3	Periphyton	Species not identified	08-18-98	A	0	A	-18.50	5.78		9.73
403	Tualatin River at RM 20.3	Periphyton	Species not identified	08-18-98	B	0	A	-18.47	5.98		10.05
403	Tualatin River at RM 20.3	Periphyton	Species not identified	08-18-98	C	0	A	-18.28	5.63		10.25
404	Henry Hagg Lake	Seston, >80 μm	—	08-11-98	A	0	A	-26.23	6.75		9.12
404	Henry Hagg Lake	Seston, >80 μm	—	08-11-98	A	1	A	-26.36	7.03		8.34
404	Henry Hagg Lake	Seston, >80 μm	—	08-11-98	B	0	A	-26.20	6.67		9.12
404	Henry Hagg Lake	Seston, >80 μm	—	08-11-98	C	0	A	-26.58	7.17		8.83
405	Tualatin River at RM 24.5	Duckweed	Duckweed sorted from mat	09-29-98	A	0	A	-29.41	6.89		9.82
405	Tualatin River at RM 24.5	Duckweed	Duckweed sorted from mat	09-29-98	B	0	A	-29.51	6.89		10.12
405	Tualatin River at RM 24.5	Duckweed	Duckweed sorted from mat	09-29-98	B	1	A	-29.33	6.74		10.25
405	Tualatin River at RM 24.5	Duckweed	Duckweed sorted from mat	09-29-98	C	0	A	-29.51	6.76		10.45
406	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-17-98	A	0	A	-32.97	7.42		7.01
406	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-17-98	B	0	A	-33.26	7.31		6.16
406	Tualatin River at RM 5.5 (Stafford Road)	Suspended sediment	—	09-17-98	C	0	A	-33.02	7.41		6.60
407	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-17-98	A	0	A	-27.98	5.26		9.22
407	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-17-98	A	1	A	-27.99	4.66		9.80
407	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-17-98	B	0	A	-28.09	5.11		9.29
407	Tualatin River at RM 26.9 (Scholls)	Suspended sediment	—	09-17-98	C	0	A	-27.73	4.66		10.79
408.1	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 1, top 3 cm	08-20-98	A	0	U	-27.40	4.59		18.56	E
408.1	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 1, top 3 cm	08-20-98	A	1	U	-27.41	5.17		16.25	E
408.2	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 2, top 2 cm	08-20-98	A	0	U	-27.74	4.64	L	13.40	E
408.2	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 2, top 2 cm	08-20-98	A	1	U	-27.80	4.99	L	17.60	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	0	A	-27.97	5.05	L	10.52	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	1	A	-28.02	5.06	L	10.36	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	0	U	-27.99	6.24	L	12.40	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	1	U	-28.09	5.32	L	15.86	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	2	U	-27.29	5.03	L	12.83	E
408.3	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 3, top 1 cm	08-20-98	A	3	U	-28.16	4.19	L	11.83	E
408.4	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 4, top 3 cm	08-20-98	A	0	A	-27.82	3.95		12.99
408.5	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 5, top 2 cm	08-20-98	A	0	A	-28.19	4.06		15.09
408.6	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 6, top 1 cm	08-20-98	A	0	A	-28.34	3.93		13.34
408.7	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 7, top 3 cm	08-20-98	A	0	A	-27.94	3.27		12.99	E
408.7	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 7, top 3 cm	08-20-98	A	1	A	-28.18	3.25		12.99	E
408.8	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 8, top 2 cm	08-20-98	A	0	A	-28.41	4.66		13.07
408.9	Tualatin River at RM 5.5 (Stafford Road)	Bed sediment	Core 9, top 1 cm	08-20-98	A	0	A	-28.32	4.18		12.46
409.1	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 1, top 3 cm	08-18-98	A	0	A	-27.93	3.79		12.54
409.2	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 2, top 2 cm	08-18-98	A	0	A	-27.47	3.66		11.67
409.3	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 3, top 1 cm	08-18-98	A	0	A	-27.74	—		—
409.3	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 3, top 1 cm	08-18-98	A	1	A	-27.93	—		—
409.3	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 3, top 1 cm	08-18-98	A	2	A	-27.83	6.03		11.25
409.3	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 3, top 1 cm	08-18-98	A	3	A	-27.86	5.80		11.36
409.3	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 3, top 1 cm	08-18-98	A	0	U	-27.79	5.24		11.94
409.4	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 4, top 3 cm	08-18-98	A	0	A	-27.15	3.10		15.46	E
409.5	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 5, top 2 cm	08-18-98	A	0	A	-27.28	3.29		16.28	E
409.6	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 6, top 1 cm	08-18-98	A	0	A	-27.22	2.96		17.59	E
409.7	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 7, top 3 cm	08-18-98	A	0	A	-27.24	—		—
409.7	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 7, top 3 cm	08-18-98	A	1	A	-27.41	—		—
409.7	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 7, top 3 cm	08-18-98	A	2	A	-27.57	5.01		14.22
409.7	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 7, top 3 cm	08-18-98	A	3	A	-27.53	5.39		14.33
409.7	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 7, top 3 cm	08-18-98	A	0	U	-27.44	4.98		14.33
409.8	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 8, top 2 cm	08-18-98	A	0	A	-27.58	3.16		19.24
409.9	Tualatin River at RM 26.9 (Scholls)	Bed sediment	Core 9, top 1 cm	08-18-98	A	0	A	-27.75	3.30	L	16.54	E
410	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	10-06-98	A	0	A	-26.81	5.67		10.61
410	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	10-06-98	B	0	A	-26.50	5.40		10.77
410	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	10-06-98	B	1	A	-26.59	5.56		10.60
410	Jackson Bottom (between Miller Swale and holding pond)	Soil	Chehalis soil	10-06-98	C	0	A	-26.64	5.13		10.48
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	A	0	A	-26.07	3.79		12.23
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	B	0	A	-26.09	4.63		11.19
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	C	0	A	-25.84	4.50		11.56
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	C	1	A	-26.10	5.01		11.89
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	C	2	A	-26.16	6.09		10.24
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	C	3	A	-26.12	6.47		9.88
411	Zurcher Farm (FernhillRoad near Tualatin River)	Soil	Wapato soil	10-06-98	C	0	U	-26.05	5.10		9.85
412	Oregon Graduate Institute (near Bronson Creek)	Soil	Woodburn soil	10-06-98	A	0	A	-27.19	-1.08		20.89
412	Oregon Graduate Institute (near Bronson Creek)	Soil	Woodburn soil	10-06-98	B	0	A	-27.13	-0.75		20.82
412	Oregon Graduate Institute (near Bronson Creek)	Soil	Woodburn soil	10-06-98	C	0	A	-27.27	-0.77		21.54
413	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaf litter	10-06-98	A	0	U	-30.43	2.34		25.82
413	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaf litter	10-06-98	B	0	U	-30.54	2.33		23.47
413	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaf litter	10-06-98	C	0	U	-30.36	2.10		25.48
413	Jackson Bottom (between Miller Swale and holding pond)	Leaf litter	Oregon Ash leaf litter	10-06-98	C	1	U	-30.30	1.97		—
414	Tualatin River at RM 67.8 (Cherry Grove)	Coniferous litter	Western Red Cedar litter	10-06-98	A	0	U	-26.58	-0.33		43.88
414	Tualatin River at RM 67.8 (Cherry Grove)	Coniferous litter	Western Red Cedar litter	10-06-98	B	0	U	-26.83	-0.66		40.11
414	Tualatin River at RM 67.8 (Cherry Grove)	Coniferous litter	Western Red Cedar litter	10-06-98	C	0	U	-27.00	0.38		35.65
415	Tualatin River at RM 67.8 (Cherry Grove)	Leaf litter	Alder leaf litter	10-06-98	A	0	U	-29.56	-1.54		27.21
415	Tualatin River at RM 67.8 (Cherry Grove)	Leaf litter	Alder leaf litter	10-06-98	A	1	U	-29.57	-1.71		28.40
415	Tualatin River at RM 67.8 (Cherry Grove)	Leaf litter	Alder leaf litter	10-06-98	B	0	U	-29.48	-1.62		27.13
415	Tualatin River at RM 67.8 (Cherry Grove)	Leaf litter	Alder leaf litter	10-06-98	C	0	U	-29.37	-1.68		30.15
416	Patton Valley Road (N side, 1 mi E Cherry Grove)	Coniferous litter	Douglas Fir litter	10-06-98	A	0	U	-27.32	-0.79		55.74
416	Patton Valley Road (N side, 1 mi E Cherry Grove)	Coniferous litter	Douglas Fir litter	10-06-98	B	0	U	-27.40	-0.50		58.32
416	Patton Valley Road (N side, 1 mi E Cherry Grove)	Coniferous litter	Douglas Fir litter	10-06-98	B	1	U	-27.55	-0.41		57.19
416	Patton Valley Road (N side, 1 mi E Cherry Grove)	Coniferous litter	Douglas Fir litter	10-06-98	C	0	U	-27.36	-0.49		58.59
417	Patton Valley Road (N side, 1 mi E Cherry Grove)	Woody material	Douglas fir twigs	10-06-98	A	0	U	-26.04	-2.94		74.40
417	Patton Valley Road (N side, 1 mi E Cherry Grove)	Woody material	Douglas fir twigs	10-06-98	B	0	U	-26.55	-2.75	L	86.49
417	Patton Valley Road (N side, 1 mi E Cherry Grove)	Woody material	Douglas fir twigs	10-06-98	C	0	U	-26.72	-2.82		48.21
417	Patton Valley Road (N side, 1 mi E Cherry Grove)	Woody material	Douglas fir twigs	10-06-98	C	1	U	-26.62	-2.96		57.48
418	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	10-06-98	A	0	A	-26.75	11.82		3.54
418	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	10-06-98	B	0	A	-26.70	10.91		4.85
418	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	10-06-98	C	0	A	-26.49	11.88		5.27
418	Rock Creek Wastewater Treatment Facility	WWTF effluent particulate	—	10-06-98	C	1	A	-26.62	11.84		5.09
419	Tualatin River at RM 5.5 (Stafford Road)	Bryozoan	—	08-13-98	A	0	A	-35.63	16.13		3.65
419	Tualatin River at RM 5.5 (Stafford Road)	Bryozoan	—	08-13-98	B	0	A	-35.40	16.22		3.66
419	Tualatin River at RM 5.5 (Stafford Road)	Bryozoan	—	08-13-98	C	0	A	-35.07	16.26		3.63
419	Tualatin River at RM 5.5 (Stafford Road)	Bryozoan	—	08-13-98	C	1	A	-35.32	15.92		3.58