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Scientific Investigations 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, 2008–10


Table 21. Polycyclic aromatic hydrocarbons (PAHs) detected in unfiltered stormwater runoff, Columbia River Basin, Washington and Oregon, 2009–10.


[Station names are shown in table 3. Concentrations are in micrograms per liter. See table A5 for a listing of compounds analyzed and their reporting limits. Present, presence is verified, but concentration is not quantified; Abbreviations: E, estimated;–, not detected]


Analyte Wenatchee Richland Umatilla The Dalles Hood River Portland1 Vancouver1 Vancouver2 Portland2 Willamette1 Willamette2 Willamette3 Willamette4 St. Helens Longview
–Dec –May
Acenaphthene Present Present Present Present Present Present Present
Acenaphthylene Present
Anthracene Present Present Present Present Present Present Present Present
Benzo[a]anthracene Present Present Present E 0.25 Present E 0.13 Present
Benzo[a]pyrene Present Present Present E 0.17 Present E 0.25 Present E 0.19 Present E 0.17
Benzo[b]fluoranthene Present E 0.23 Present Present E 0.26 E 0.24 0.39 Present E 0.19 Present E 0.23
Benzo[ghi]perylene Present Present Present E 0.20 Present Present E 0.23 Present Present Present Present
Benzo[k]fluoranthene Present Present Present E 0.18 Present Present Present
2-Chlorophenol Present Present
Chrysene Present E 0.17 Present Present E 0.24 E 0.24 0.36 Present Present Present Present
Dibenz[a,h]anthracene Present Present
1,2-Dichlorobenzene Present
1,4-Dichlorobenzene Present Present
2,4-Dichlorophenol Present Present 0.80 2.3
Diethyl phthalate Present Present Present 1.5 Present
Dimethyl phthalate E 0.71 Present Present Present E 0.61 Present Present Present
2,4-Dimethylphenol Present Present 0.44 Present Present 0.44 2.0 0.38 E 0.23 Present
Di-n-butyl phthalate Present E 0.20 E 1.0 Present
Di-n-octyl phthalate Present E 0.84 E 1.8 Present
bis(2-Ethylhexyl) phthalate Present E 3.0 E 2.3 2.1 Present < 2.2 E 2.9
Fluoranthene Present Present E 0.22 E 0.19 Present E 0.21 0.35 E 0.41 Present 0.78 Present E 0.25 Present 0.21
Fluorene Present Present Present Present Present Present Present
Indeno[1,2,3-cd]pyrene Present Present Present Present Present E 0.19 Present Present
Isophorone Present Present E 0.15 Present Present Present Present Present
Naphthalene Present Present Present Present E 0.21 Present Present
2-Nitrophenol Present
4-Nitrophenol < 1.3 Present Present E 0.33 Present E0.34 E 0.40 E 0.29
N-Nitrosodiphenylamine Present Present Present Present E 0.18 Present
Pentachlorophenol E 0.49 Present Present E 0.57 Present Present E 0.86 E0.31 E 0.43 E 0.50 Present Present
Phenanthrene Present Present Present Present E 0.19 E 0.19 Present 0.65 Present Present Present Present
Phenol Present Present 0.37 E 0.20 E 0.14 Present 0.32 2.1 E 0.15 Present Present
Pyrene Present Present E 0.18 E 0.18 Present E 0.18 0.36 E 0.37 Present 0.63 Present E 0.25 Present E 0.19
1,2,4-Trichlorobenzene Present
2,4,6-Trichlorophenol E 0.20

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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