USGS Scientific Invesigations Report 2012–5068  - Reconnaissance of Contaminants in Selected Wastewater-Treatment-Plant Effluent and Stormwater Runoff Entering the Columbia River, Columbia River Basin, Washington and Oregon, 2008

Table 12. Physical properties and suspended-sediment results for wastewater-treatment-plant effluent, Columbia River Basin, Washington and Oregon, 2008–09. 

[Station names are shown in table 2. Abbreviations: Mgal/d, million gallons per day; mg/L, milligrams per liter; µm, micrometer; NA, not analyzed] 

City	Date	Time	Daily plant discharge for sampling date (Mgal/d)	Water temperature (degrees Celsius)	pH (standard units)	Suspended sediment (mg/L)	Suspended sediment (percent finer than 63 µm)
Wenatchee	12-02-08	1010	3.1	15.6	6.9	4	98
	12-01-09	0850	2.9	18.0	7.4	3	92
Richland	12-04-08	0900	5.4	18.3	7.2	5	64
	12-02-09	0820	5.8	NA	NA	NA	NA
Umatilla	12-03-08	0840	0.54	16.9	7.4	2	93
	12-02-09	0950	0.53	NA	NA	NA	NA
The Dalles	12-05-08	0830	1.7	15.8	7.0	2	96
	12-02-09	1200	1.5	NA	NA	NA	NA
Hood River	12-10-08	0950	0.89	14.0	6.9	4	95
	12-02-09	1310	0.92	NA	NA	NA	NA
Portland (a.m.)	12-09-08	0900	49	15.6	8.8	3	95
(noon)	12-09-08	1150	49	NA	NA	5	99
(p.m.)	12-09-08	1500	49	NA	NA	4	94
Portland	12-10-09	0840	58	NA	NA	NA	NA
Vancouver	12-08-08	0940	10	18.5	7.4	3	97
	12-02-09	1510	9.7	NA	NA	NA	NA
St Helens	12-03-09	0900	6.9	NA	NA	7	96
Longview	12-08-09	0810	6.9	NA	NA	6	94

Reconnaissance of Contaminants in Selected Wastewater-Treatment-Plant Effluent and Stormwater Runoff Entering the Columbia River, Columbia River Basin, Washington and Oregon, 2008–10

Reconnaissance of Contaminants in Selected Wastewater-Treatment-Plant Effluent and Stormwater Runoff Entering the Columbia River, Columbia River Basin, Washington and Oregon, 2008–10 