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Scientific Investigations Report 2012–5068


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


Table 4. Summary of sampling activities, Columbia River Basin, Washington and Oregon, 2008–10.


[Station names are shown in tables 2 and 3. Constituents analyzed, reporting limits, and method parameters are presented in appendix A]


City or 
short name Date Time Suspended sediment Anthro-pogenic organic compounds in unfiltered water
(table A2)		 Pharma-ceuticals in filtered water
(table A3)		 Halogenated compounds on solids filtered from samples
(table A1)		 Currently used pesticides in filtered water
(table A4)		 Mercury 
and methyl-mercury in unfiltered water Polycyclic aromatic hydrocarbons in unfiltered water
(table A5)		 Trace elements in unfiltered and filtered water
(table A6)		 Oil and grease in unfiltered water
Wastewater-treatment-plant effluent samples
2008 visit to initial seven cities
Wenatchee 12-02-08 1010 X X X X
Richland 12-04-08 0900 X X X X
Umatilla 12-03-08 0840 X X X X
The Dalles 12-05-08 0830 X X X X
Hood River 12-10-08 0950 X X X X
Portland (a.m.) 12-09-08 0900 X X X X
(noon) 12-09-08 1150 X X X X
(p.m.) 12-09-08 1500 X X X X
Vancouver 12-08-08 0940 X X X X
2009 revisit and additional cities
Wenatchee 12-01-09 0850 X X X X X X
Richland 12-02-09 0820   X X
Umatilla 12-02-09 0950   X X
The Dalles 12-02-09 1200   X X
Hood River 12-02-09 1310   X X
Portland 12-10-09 0840   X X
Vancouver 12-02-09 1510   X X
St. Helens 12-03-09 0900 X X X X X X
Longview 12-08-09 0810 X X X X X X
Stormwater-runoff samples
2009 and 2010 storms
Wenatchee 12-21-09 1340 X   X X X X X X
Richland 05-02-09 1200 X   X X   X X X
Umatilla 10-04-09 0920 X   X X   X X X
The Dalles 02-23-09 1210 X   X X   X X X
Hood River 02-23-09 1310 X   X X   X X X
Portland1 10-14-09 1100 X   X X   X X X
Portland2 10-26-09 1210 X   X X   X X X
Vancouver1 12-16-09 1340 X   X X X X X X
Vancouver2 12-16-09 1210 X   X X X X X X
Willamette1 06-04-10 0840 X   X X X X X X
Willamette2–Dec 12-15-09 1330 X   X X X X X X
Willamette2–May 05-26-10 1310 X   X X X X X X
Willamette3 12-15-09 1310 X   X X X X X X
Willamette4 05-26-10 1410 X   X X X X X X
St. Helens 03-30-10 1310 X   X X X X X X
Longview 03-30-10 1410 X   X X X X X X

First posted April 25, 2012

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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