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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 A4. Reporting limits, uses, and classes of currently used pesticides and degradates analyzed in filtered wastewater-treatment-plant effluent or stormwater runoff, Columbia River Basin, Washington and Oregon, 2009–10.


[Shading indicates a detection in wastewater-treatment-plant effluent; bold type indicates a detection in stormwater runoff in this study. CAS No.: Chemical Abstract Service Registry Number® is a Registered Trademark of the American Chemical Society. CAS recommends the verification of the CASRNs through CAS Client ServicesSM. Method detection limit and Reporting limit: Values are in micrograms per liter. Abbreviations: NA, not available; D, degradate; Def, defoilant; F, fumigant; Fun, fungicide; H, herbicide; I, insecticide; N, nematocide; –, not applicable]


Analyte Parameter

code
CAS

No.
Method detection limit   Reporting limit Use Class Parent compound
February–

September 2009
October 2009–

June 2010
February–

September 2009
October 2009–

June 2010
Fungicides
3,5-Dichloroaniline 61627 626-43-7 0.002 0.0015   0.004 0.003 D Amide Iprodione
Iprodione 61593 36734-19-7 0.007 0.007 0.014 0.014 Fun Amide
Metalaxyl 61596 57837-19-1 0.003 0.003 0.007 0.007 Fun Acylalanine
Myclobutanil 61599 88671-89-0 0.005 0.005 0.01 0.01 Fun Triazole
cis-Propiconazole 79846 60207-90-1 0.003 0.003 0.006 0.006 Fun Triazole
trans-Propiconazole 79847 60207-90-1 0.01 0.01 0.02 0.02 Fun Triazole
Tebuconazole 62852 107534-96-3 0.01 0.01 0.02 0.02 Fun Triazole
Herbicides and degradates
Acetochlor 49260 34256-82-1 0.005 0.005   0.01 0.01 H Chloroacetamide
Alachlor 46342 15972-60-8 0.004 0.004 0.008 0.008 H Chloroacetamide
Atrazine 39632 1912-24-9 0.004 0.004 0.007 0.007 H Triazine
Benfluralin 82673 1861-40-1 0.007 0.007 0.014 0.014 H Dinitroaniline
2-Chloro-2,6-diethylacetanilide 61618 6967-29-9 0.005 0.005 0.01 0.01 D Chloroacetamide Alachlor
2-Chloro-4-isopropylamino-6-amino-s-triazine (CIAT) 04040 6190-65-4 0.007 0.007 0.014 0.014 D Triazine Atrazine
4-Chloro-2-methylphenol 61633 1570-64-5 0.0025 0.002 0.005 0.0032 D Chlorophenoxy acid MCPA, MCPB
Cyanazine 04041 21725-46-2 0.02 0.011 0.04 0.022 H Triazine
DCPA (Dacthal) 82682 1861-32-1 0.003 0.0038 0.006 0.0076 H Organochlorine
3,4-Dichloroaniline 61625 95-76-1 0.002 0.0021 0.004 0.0042 D Phenyl urea, Chloroacetamide Diuron, Propanil, Linuron, Neburon
2,6-Diethylaniline 82660 579-66-8 0.003 0.003 0.006 0.006 D Chloroacetamide Alachlor
S-Ethyl dipropyl thiocarbamate 
 (EPTC) 82668 759-94-4 0.001 0.001 0.002 0.002 H Thiocarbamate
2-Ethyl-6-methylaniline 61620 24549-06-2 0.0049 0.0049 0.010 0.0098 D Chloroacetamide Metolachlor
Hexazinone 04025 51235-04-2 0.004 0.004 0.008 0.008 H Triazine
Metolachlor 39415 51218-45-2 0.007 0.007 0.014 0.014 H Chloroacetamide
Metribuzin 82630 21087-64-9 0.008 0.006 0.016 0.012 H Triazine
Molinate 82671 2212-67-1 0.001 0.0013 0.002 0.0026 H Thiocarbamate
Oxyfluorfen 61600 42874-03-3 0.003 0.005 0.006 0.01 H Diphenyl ether
Pendimethalin 82683 40487-42-1 0.006 0.006 0.012 0.012 H Dinitroaniline
Prometon 04037 1610-18-0 0.006 0.006 0.012 0.012 H Triazine
Prometryn 04036 7287-19-6 0.003 0.003 0.006 0.006 H Triazine
Propanil 82679 709-98-8 0.007 0.005 0.014 0.01 H Chloroacetamide
Propyzamide 82676 23950-58-5 0.002 0.0018   0.004 0.0036 H Amide
Simazine 04035 122-34-9 0.005 0.003 0.01 0.006 H Triazine
Tebuthiuron 82670 34014-18-1 0.01 0.014 0.02 0.028 H Phenyl urea
Terbuthylazine 04022 5915-41-3 0.003 0.003 0.006 0.006 H Triazine
Thiobencarb 82681 28249-77-6 0.008 0.008 0.016 0.016 H Thiocarbamate
Trifluralin 82661 1582-09-8 0.006 0.009 0.012 0.018 H Dinitroaniline
Insecticides and degradates
Azinphos-methyl 82686 86-50-0 0.06 0.06   0.12 0.12 I Organophosphate
Azinphos-methyl-oxon 61635 961-22-8 0.021 0.021 0.042 0.042 D Organophosphate Azinphos-methyl
Carbaryl 82680 63-25-2 0.1 0.03 0.2 0.06 I Carbamate
Carbofuran 82674 1563-66-2 0.03 0.03 0.06 0.06 I Carbamate
Chlorpyrifos 38933 2921-88-2 0.005 0.005 0.01 0.01 I Organophosphate
Chlorpyrifos oxygen analog 61636 5598-15-2 0.025 0.025 0.05 0.05 D Organophosphate Chlorpyrifos
Cyfluthrin 61585 68359-37-5 0.008 0.008 0.016 0.016 I Pyrethroid
lambda-Cyhalothrin 61595 91465-08-6 0.005 0.005 0.01 0.01 I Pyrethroid
Cypermethrin 61586 52315-07-8 0.01 0.01 0.02 0.02 I Pyrethroid
Desulfinylfipronil 62170 NA 0.006 0.006 0.012 0.012 D Phenyl pyrazole Fipronil
Desulfinylfipronil amide 62169 NA 0.015 0.015 0.029 0.029 D Phenyl pyrazole Fipronil
Diazinon 39572 333-41-5 0.003 0.003 0.005 0.005 I Organophosphate
Diazinon oxygen analog 61638 962-58-3 0.0021 0.0021 0.006 0.006 D Organophosphate Diazinon
Dicrotophos 38454 141-66-2 0.04 0.04 0.08 0.08 I Organothiophosphate
Dieldrin 39381 60-57-1 0.004 0.004 0.009 0.009 I Organochlorine
Dimethoate 82662 60-51-5 0.003 0.003 0.006 0.006 I Organothiophosphate
Disulfoton 82677 298-04-4 0.02 0.02 0.04 0.04 I Organophosphate
Disulfoton sulfone 61640 2497-06-5 0.0068 0.0068 0.014 0.0136 D Organophosphate Disulfoton
alpha-Endosulfan 34362 959-98-8 0.003 0.003 0.006 0.006 I Organochlorine
Endosulfan sulfate 61590 1031-07-8 0.011 0.007 0.022 0.014 D Organochlorine alpha-Endosulfan, beta-Endosulfan
Ethion 82346 563-12-2 0.006 0.004 0.012 0.008 I Organothiophosphate
Ethion monoxon 61644 17356-42-2 0.011 0.011 0.021 0.021 D Organothiophosphate Ethion
Fipronil 62166 120068-37-3 0.02 0.009 0.04 0.018 I Phenyl pyrazole
Fipronil sulfide 62167 120067-83-6 0.006 0.006 0.013 0.013 D Phenyl pyrazole Fipronil
Fipronil sulfone 62168 120068-36-2 0.012 0.012   0.024 0.024 D Phenyl pyrazole Fipronil
Fonofos 04095 944-22-9 0.005 0.0022 0.01 0.0044 I Organophosphate
Isofenphos 61594 25311-71-1 0.003 0.003 0.006 0.006 I Organothiophosphate
Malaoxon 61652 1634-78-2 0.04 0.04 0.08 0.08 D Organophosphate Malathion
Malathion 39532 121-75-5 0.01 0.008 0.02 0.016 I Organophosphate
Methidathion 61598 950-37-8 0.003 0.003 0.006 0.006 I Organothiophosphate
Methyl paraoxon 61664 950-35-6 0.005 0.005 0.01 0.01 D Organophosphate Methyl parathion
Methyl parathion 82667 298-00-0 0.004 0.004 0.008 0.008 I Organophosphate
cis-Permethrin 82687 61949-76-6 0.007 0.007 0.014 0.014 I Pyrethroid
Phorate 82664 298-02-2 0.01 0.01 0.02 0.02 I Organophosphate
Phorate oxon 61666 2600-69-3 0.013 0.013 0.027 0.027 D Organophosphate Phorate
Phosmet 61601 732-11-6 0.1 0.017 0.2 0.034 I Organothiophosphate
Phosmet oxon 61668 3735-33-9 0.0079 0.0079 0.0511 0.0511 D Organothiophosphate Phosmet
Propargite 82685 2312-35-8 0.01 0.01 0.02 0.02 I Miscellaneous
Tefluthrin 61606 79538-32-2 0.005 0.005 0.01 0.01 I Pyrethroid
Terbufos 82675 13071-79-9 0.009 0.009 0.018 0.018 I Organophosphate
Terbufos oxygen analog sulfone 61674 56070-15-6 0.022 0.022 0.045 0.045 D Organophosphate Terbufos
Other compounds
Dichlorvos 38775 62-73-7 0.01 0.01   0.02 0.02 F, D Organophosphate Naled
Ethoprop 82672 13194-48-4 0.008 0.008 0.016 0.016 N, I Organophosphate
Fenamiphos 61591 22224-92-6 0.015 0.015 0.029 0.03 N Organothiophosphate
Fenamiphos sulfone 61645 31972-44-8 0.027 0.027 0.053 0.053 D Organothiophosphate Fenamiphos
Fenamiphos sulfoxide 61646 31972-43-7 0.04 0.04 0.08 0.08 D Organothiophosphate Fenamiphos
1-Naphthol 49295 90-15-3 0.02 0.018 0.04 0.036 D Carbamate, Chloroacetamide Carbaryl, Napropamide
Tribufos 61610 78-48-8 0.018 0.009 0.035 0.018 Def Organothiophosphate

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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