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Endangered Species Effects Determinations and Consultations and Biological Opinions

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1,3-dichloropropene 2,4-dichlorophenoxyacetic acid (2,4-D) 2,4-D Ethylhexyl ester Acephate Acrolein Atrazine Azinphos-methyl Bensulide
Bromacil and Lithium Bromacil Bromoxynil Captan Carbaryl Carbofuran Chlorpyrifos Chlorophacinone Chlorothalonil
Coumaphos Diazinon Dicamba Dichlobenil Diflubenzuron Dimethoate Disulfoton Diuron
Ethoprop Fenamiphos Fenbutatin-oxide Glyphosate Hexazinone Iprodione Lindane Linuron
Malathion Methidathion Methamidophos Methomyl Methyl Parathion Metolachlor Metribuzin Naled
Molinate Norflurazon Oryzalin Oxyfluorfen Pendimethalin Phorate Phosmet Prometon
Propargite Simazine Sodium Cyanide Sodium Fluoroacetate Tebuthiuron Terbacil Thiobencarb Thiodicarb
Trifluralin Triclopyr BEE Triclopyr BEE - Forestry Use          
Quick Resources

Effects Determinations

Re-initiation of Consultation for Sodium Cyanide

Transmittal Letter (PDF) (2 pp, 49K) from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to Gary Frazer, Assistant Director for Endangered Species, U.S. Fish and Wildlife Service (02/11/2011)

Newly Listed Species Potentially Affected (PDF) (4 pp, 93K) from Valerie Woodard, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (02/10/2011)

Response to Petition to Cancel (PDF) (53 pp, 329K) from Debra Edwards, Ph.D., Director, Office of Pesticide Programs to Wendy Keefover-Ring, Director, Carnivore Protection Program (01/16/2009)

Registration Review Problem Formulation (PDF) (30 pp, 1.30MB) from Valerie Woodard, Ron Parker, Environmental Fate and Effects Division to Kathryn Jakob, Robert McNally, Pesticide Re-evaluation Division (09/20/2010)

Reregistration Eligibility Decision (PDF) (160 pp, 914K) Reregistration Eligibility Decision (RED) - Sodium Cyanide (09/1994)

Re-initiation of Consultation for Sodium Fluoroacetate

Transmittal Letter (PDF) (2 pp, 44K) from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to Gary Frazer, Assistant Director for Endangered Species, U.S. Fish and Wildlife Service (02/11/2011)

Newly Listed Species Potentially Affected (PDF) (4 pp, 94K) from Valerie Woodard, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (02/10/2011)

Response to Petition to Cancel (PDF) (53 pp, 329K) from Debra Edwards, Ph.D., Director, Office of Pesticide Programs to Wendy Keefover-Ring, Director, Carnivore Protection Program (01/16/2009)

Registration Review Problem Formulation (PDF) (36 pp, 677K) from Valerie Woodard, Ron Parker, Environmental Fate and Effects Division to Kathryn Jakob, Robert McNally, Pesticide Re-evaluation Division (09/20/2010)

Reregistration Eligibility Decision (PDF) (98 pp, 5049K) Reregistration Eligibility Decision (RED) - Sodium Fluoroacetate (09/1995)

Nation-wide Effects Determination for Chlorophacinone Relative to the Use of Rozol Prairie Dog Bait (EPA Reg. No. 7173-286)

Transmittal Letter (PDF) from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to Gary Frazer, Assistant Director for Endangered Species, US Fish and Wildlife Service (9/30/10) (2 pp, 51K)

Effects Memorandum (PDF) from Jean Holmes, Acting Branch Chief, Environmental Fate and Effects Division (et.al) to Arthur-Jean B. Williams, Associate Director, Environmental fate and Effects Division (9/29/10) (4 pp, 69K)

Chlorophacinone Analysis (PDF) Nation-wide Effects Determination for Chlorophacinone Relative to the Use of Rozol Prairie Dog Bait (EPA Reg. No. 7173-286) (9/29/10) (122 pp, 1507K)

Effects Determinations for Diazinon on Pacific Andromous Salmonids

EPA response to NMFS November 18, 2008 Final Biological Opinion (PDF) from Richard Keigwin, Director, Special Review and Reregistration Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (September 10, 2009) (21 pp, 333K).

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species. (484 pp, 11.04MB)

EPA response to NMFS July 31, 2008 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (6 pp, 459K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (381 pp, 10.41MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 231K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 95KB)

Diazinon Analysis (PDF) of Risks to Endangered and Threatened Salmon and Steelhead (124 pp, 404K)

Effects Determination for Diazinon and the Barton Springs Salamander

Transmittal Letter (PDF) from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (5/14/07) (2 pp, 77.2K)

Effects Memorandum (PDF) from Thomas Steeger, Ph.D., Senior Biologist, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental fate and Effects Division (5/9/07) (1 pp, 56.6K)

Diazinon Analysis (PDF): Risks of Diazinon Use to the Federally Listed Endangered Barton Springs Salamander (inclusive of appenices) (5/9/07) (221 p, 6.71MB)

Effects Determination for Metolachlor and the Barton Springs Salamander

Transmittal Letter (PDF) from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (5/14/07) (2 pp, 77.6K)

Effects Memorandum (PDF) from Edward Odenkirchen, Ph.D, Senior Scientist, Environmental Fate and Effects Division (et.al) to Arthur-Jean B. Williams, Associate Director, Environmental fate and Effects Division (5/2/07) (2 pp, 62.8K)

Metolachlor Analysis (PDF) Risks of Metolachlor Use to Federally Listed Endangered Barton Springs Salamander (5/3/07) (62 pp, 882 K)

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Effects Determinations for 2,4-dichlorophenoxyacetic acid (2,4-D)

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 20011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011) (1047 pp, 20.49MB)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011) (10 pp, 138K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011) (1087 pp, 41.0MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (3 pp, 19K)

Memorandum (PDF) from Shannon Borges, Cara Dzubow, Greg Orrick and Ann Stavola to Arthur-Jean B. Williams, Chief, Environmental Field Branch (11/30/04) (2 pp, 34K)

2,4-D Analysis (PDF) (102 pp, 623K)

Effects Determinations for Malathion

EPA response to NMFS November 18, 2008 Final Biological Opinion (PDF) (21 pp, 333K) from Richard Keigwin, Director, Special Review and Reregistration Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (September 10, 2009)

Final Biological Opinion (PDF) (484 pp, 11.04MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species.

EPA response to NMFS July 31, 2008 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (6 pp, 459K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (381 pp, 10.41MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 18K)

Memorandum (PDF) from Jeannette Martinez and Jennifer Leyhe to Arthur-Jean B. Williams, Chief, Environmental Field Branch (11/30/04) (2 pp, 16K)

Malathion Analysis (PDF) (110 pp, 755K)

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Effects Determinations for Triclopyr BEE

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 20011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) (1047 pp, 20.49MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) (10 pp, 138K) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011)

Draft Biological Opinion (PDF) (1087 pp, 41.0MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 18K)

Memorandum (PDF) from Genifer Maree Tarkowski to Arthur-Jean B. Williams, Chief, Environmental Field Branch (11-30-04) (2 pp, 17K)

Triclopyr BEE Analysis (PDF) (58 pp, 292K)

Effects Determinations for Lindane

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 13K)

Memorandum (PDF) from Michael Patterson to Arthur-Jean B. Williams, Chief, Environmental Field Branch (11-29-04) (2 pp, 18K)

Lindane Analysis (PDF) (73 pp, 563K)

Effects Determinations for Bromoxynil

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 13K)

Memorandum (PDF) from Michael Patterson to Arthur-Jean B. Williams, Chief, Environmental Field Branch (11-26-04) (2 pp, 17K) Bromoxynil Analysis (PDF) (105 pp, 967K)

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Effects Determinations for Pendimethalin

NMFS Final Biological Opinion under the Endangered Species Act, Issued for Oryzalin, Triflualin, and Pendimethalin (PDF) (1096 pp, 20.23MB) related to Pesticides and Pacific Salmon and Steelhead Species (May 31, 2012)

EPA's May 11, 2012, Response to the NMFS March 30, 2012, Draft Biological Opinion on Oryzalin, Pendimethalin, and Trifluralin (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to Helen Golde, Ph.D., Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 11, 2012) (6 pp, 178K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (03/30/12) (786 pp, 16.80MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 14K)

Memorandum (PDF) from Kurt Pluntke to Arthur-Jean B. Williams, Chief, Environmental Field Branch (12/01/04) (2 pp, 17K)

Pendimethalin Analysis (PDF) (69 pp, 385K)

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Effects Determinations for Carbofuran

EPA response to NMFS April 20, 2009 Final Biological Opinion (PDF) from Richard Keigwin, Director, Pesticide Re-evaluation Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 14, 2009) (20 pp, 888.73K)

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (609 pp, 11.87MB)

EPA response to NMFS March 18, 2009 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (10 pp, 720K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (608 pp, 11.38MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (12/1/04) (2 pp, 22K)

Memorandum (PDF) from Genifer Maree Tarkowski to Arthur-Jean B. Williams, Chief, Environmental Field Branch (12-01-04) (19K)

Carbofuran Analysis (PDF) (70 pp, 383K )

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Effects Determinations for Glyphosate on Pacific Salmonid ESUs

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (10/12/04) (2 pp, 1K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (10/7/04) (2 pp, 19K)

Glyphosate Analysis (PDF) (117 pp, 1.09MB)

Effects Determinations for Hexazinone

Determination of No Effect for Hexazinone for Three Pacific Salmonid ESUs for Alfalfa and Forestry Uses

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (10/9/04) (2 pp, 19K)

Memorandum (PDF) from Jennifer Leyhe to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 20K)

Hexazinone Analysis (PDF) (28 pp, 165K)

Effects Determinations for Metribuzin
Determination of No Effect for Metribuzin

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/29/04) (1 pg, 42K)
Metribuzin Analysis (PDF)
(90 pp, 691K)

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Effects Determinations for Oxyfluorfen
Determination of no effect for Oxyfluorfen

Effects Determinations for Coumaphos
Determination of no effect for Coumaphos

Effects Determinations for Tebuthiuron
Determination of no effect for Tebuthiuron

Effects Determinations for Dimethoate

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/15/04) (1 pg, 45K)

Dimethoate Analysis (PDF) (115 pp, 38K)

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Effects Determinations for Diflubenzuron

Draft Biological Opinion under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (05/01/13)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (07/29/04) (2 pp, 63K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/15/04) (1 pg, 47K)

Diflubenzuron Analysis (PDF) (91 pp, 781K)

Effects Determinations for 1,3-dichloropropene

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (07/29/04) (2 pp, 63K)

Memorandum (PDF) from Nikiba Daughtry to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/29/04) (2 pp, 68K)

1,3-dichloropropene Analysis (PDF) (56 pp, 400K)

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Effects Determinations for Forestry Uses of 2,4-D ethylhexyl ester on One Listed Pacific Salmonid ESU

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (05/10/04) (2 pp, 19K)

Determination of no effect (PDF) for 2,4-D ethylhexyl ester for Pacific Anadromous Salmonids (5/10/04) (1 p, 19K)

2,4-D ethylhexyl ester Analysis (PDF) (39 pp, 204K)

Effects Determinations for Forestry Uses of Triclopyr BEE on Three Listed Pacific Salmonid ESUs

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (05/10/04) (2 pp, 19K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (05/10/04) (1 p, 19K)

Triclopyr BEE Analysis (PDF) (31 pp, 156K)

Effects Determinations for Acephate

Determination of no effect for Acephate for Pacific Anadromous Salmonids (PDF) (03/31/04) (2 pp, 12.7K)

Acephate Analysis (88 pp, 1.92MB)

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Effects Determinations for Naled

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (04/1/04) (2 pp, 11.3K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (04/1/04) (1 p, 16.4K)

Naled Analysis (PDF) (64 pp, 364K)

Effects Determinations for Linuron

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 2011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) (1047 pp, 20.49MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) (10 pp, 138K) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011)

Draft Biological Opinion (PDF) (1087 pp, 41.0MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (03/31/04) (2 pp, 8.28K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (03/31/04) (1 p, 16.5K)

Linuron Analysis (PDF) (69 pp, 417K)

Effects Determinations for Methamidophos

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (03/31/04) (2 pp, 10.5K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (03/31/04) (1 p, 16.9K)

Methamidophos Analysis, PDF (65 pp, 408K)

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Effects Determinations for Methidathion

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (4/1/04) (2 pp, 11.2K)

Memorandum (PDF) from Nikiba Daughtry to Arthur-Jean B. Williams, Chief, Environmental Field Branch (04/1/04) (2 pp, 17.8K)

Methidathion Analysis (PDF) (57 pp, 290K)

Effects Determinations for Methyl Parathion

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (4/1/04) (2 pp, 11.0K)

Memorandum (PDF) from Nikiba Daughtry to Arthur-Jean B. Williams, Chief, Environmental Field Branch (04/1/04) (2 pp, 17.8K)

Methyl Parathion Analysis (PDF) (57 pp, 310K)

Effects Determinations for Trifluralin

NMFS Final Biological Opinion under the Endangered Species Act, Issued for Oryzalin, Triflualin, and Pendimethalin (PDF) (1096 pp, 20.23MB) related to Pesticides and Pacific Salmon and Steelhead Species (May 31, 2012)

EPA's May 11, 2012, Response to the NMFS March 30, 2012, Draft Biological Opinion on Oryzalin, Pendimethalin, and Trifluralin (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to Helen Golde, Ph.D., Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 11, 2012) (6 pp, 178K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (03/30/12) (786 pp, 16.80MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (04/1/04) (2 pp, 10.9K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (04/1/04) (1 p, 17.1K)

Trifluralin Analysis (PDF) (63 pp, 300K)

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Effects Determinations for Captan

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 20011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) (1047 pp, 20.49MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) (10 pp, 138K) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011)

Draft Biological Opinion (PDF) (1087 pp, 41.0MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 60K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 70K)

Captan Analysis (PDF) (92 pp, 70K)

Effects Determinations for Chlorothalonil

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 20011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) (1047 pp, 20.49MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) (10 pp, 138K) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011)

Draft Biological Opinion (PDF) (1087 pp, 41.0MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 73K)

Memorandum (PDF) from Larry Turner, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 61K)

Chlorothalonil Analysis (PDF) (132 pp, 683K)

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Effects Determinations for Disulfoton

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 56K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 60K)

Disulfoton Analysis (PDF) (94 pp, 551K)

Effects Determinations for Ethoprop

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 62K)

Memorandum (PDF) from Michael Patterson, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 62K)

Ethoprop Analysis (PDF) (80 pp, 714K)

Effects Determinations for Fenamiphos

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 55K)

Memorandum (PDF) from Ann Stavola to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 48K)

Fenamifos Analysis (PDF) (79 pp, 490K)

Effects Determination for Iprodione

Determination of no effects for Iprodione for Pacific Anadromous Salmonids (PDF) (14 pp, 150K)

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Effects Determinations for Phosmet

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 61K)

Memorandum (PDF) from Larry Turner, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 67K)

Phosmet Analysis (PDF) (173 pp, 915K)

Effects Determinations for Bromacil and Lithium Bromacil

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Laurie Allen, Acting Director, Office of Protected Resources, National Marine Fisheries Service (2 pp, 60K)

Memorandum (PDF) from Larry Turner, Ph.D., to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 78K)

Bromacil and Lithium Bromacil Analysis (PDF) (45 pp, 320K)

Amended Formal Consultation Request for Diazinon (PDF) (1 p, 24.6K)

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Effects Determination for Terbacil

Determination of no effect for Terbacil for Pacific Anadromous Salmonids (PDF) (07/29/03) (13 pp, 629K)

Effects Determination for Simazine

Determination of No Effect for Simazine relative to the Barton springs salamander

Memo to the Files (PDF) - from Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, EPA to the Files (2pp, 30K)

Transmittal memo (PDF) - From Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division (September 20, 2007) (1 pp, 27K)

Effects Determination (PDF) - Effects determination for atrazine relative to the pallid sturgeon (September 20, 2007) (90 pp, 4.62MB)

Determination of no effect for Simazine (07/29/03)

Transmittal letter (PDF) from EPA to NOAA, (2 pp, 44K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/29/03) (41 p, 3K)

Simazine Analysis (PDF) of Risk to Endangered and Threatened Salmon and Steelhead (31 pp, 551K)

Effects Determination for Azinphos-methyl

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, National Marine Fisheries Service (2 pp, 95K)

Memorandum (PDF) from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 51K)

Azinphos-methyl Analysis (PDF) (July 23, 2003) (105 pp, 290K)

Effects Determination for Dichlobenil

Memorandum (PDF) from Ann Stavola, Biologist, Environmental Field Branch, to Arthur-Jean Williams, Chief, Environmental Field Branch (2 pp, 66K)

Dichlobenil Analysis of Risks (PDF) (33 pp, 709K)

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Effects Determination for Phorate

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, National Marine Fisheries Service (August 1, 2003) (2 pp, 23K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch and Edward Odenkirchen, Ph.D., Environmental Risk Branch 1, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (August 1, 2003) (2 pp, 21K)

Phorate Analysis (PDF) (72 pp, 81K)

Effects Determination for Diuron

NMFS June 30, 2011 Final Biological Opinion under the Endangered Species Act, Issued for Six Pesticides (PDF) (1131 pp, 14.44MB) Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (June 30, 2011)

EPA response to NMFS May 13, 20011 Second Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (June 14, 2011) (12 pp, 4.22MB)

Revised Draft Biological Opinion (PDF) (1047 pp, 20.49MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (May 13, 2011)

EPA response to NMFS March 1, 2011 Draft Biological Opinion (PDF) (10 pp, 138K) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (April 19, 2011)

Draft Biological Opinion (PDF) (1087 pp, 41.0MB) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead Species (March 1, 2011)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, National Marine Fisheries Service (August 1, 2003) (2 pp, 23K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (August 1, 2003) (2 pp, 21K)

Diuron Analysis (PDF) (115 pp, 1,113K)

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Effects Determination for Prometon

Effects Determination for Prometon Relative to the Barton Springs Salamander

Transmittal letter (PDF) - From Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, USEPA to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (September 21, 2007) (2 pp, 32K)

Transmittal memo (PDF) - From Edward Odenkirchen, Ph.D, Senior Scientist; Paige Doelling Brown, Ph.D., Fisheries Biologist; James Hetrick, Ph.D., Senior Scientist; Thomas Bailey, Ph.D, Acting Branch Chief, Environmental Risk Branch 1, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, USEPA (September 18, 2007) (2 pp, 39K)

Effects Determination (PDF) - Effects determination for prometon relative to the Barton springs salamander (September 18, 2007) (54 pp, 1.13 MB)

Effects Determinations for Atrazine

Effects Determination for Atrazine Relative to the Pallid Sturgeon

Input from Syngenta (PDF) - Letter and Input from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environmental Protection Agency re: Comments on EPA's Effect Determinations for Atrazine Relative to Three Federally Listed endangered Freshwater Mussels [Catspaw (Epioblasma Obliquata Obliquata), Fat Pocketbook (Potamilus Capax), Northern Riffleshell (Epioblasma Torulosa Rangiana)] and Two Federally Listed Endangered Freshewater Fish [Pallid Sturgeon (Scaphirhynchus Albus), Topeka Shiner (Notropis Topeka)] (October 12, 2007) (21 pp, 536K)

Transmittal letter (PDF) - From Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, USEPA to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (September 17, 2007) (2 pp, 30K)

Input from Syngenta (PDF) - Letter from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environmental Protection Agency re: Supporting Data for EPA's Effect Determinations for Atrazine Relative to Three Federally Listed Endangered Freshwater Mussels and Two Federally Listed Endangered Freshwater Fish. (August 14, 2007) (2 pp, 58K)

Transmittal memo (PDF) - From Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (August 29, 2007) (2p., 38.9K)

Effects Determination (PDF) - Effects determination for atrazine relative to the pallid sturgeon (August 29, 2007) (136 pp, 10.2MB)

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Effects Determination for Atrazine Relative to Three Listed Freshwater Mussel Species

Input from Syngenta (PDF) - Letter and Input from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environemtnal Protection Agency re: Comments on EPA's Effect Determinations for Atrazine Relative to Three Federally Listed endangered Freshwater Mussels [Catspaw (Epioblasma Obliquata Obliquata), Fat Pocketbook (Potamilus Capax), Northern Riffleshell (Epioblasma Torulosa Rangiana)] and Two Federally Listed Endangered Freshewater Fish [Pallid Sturgeon (Scaphirhynchus Albus), Topeka Shiner (Notropis Topeka)] (October 12, 2007) (21 pp, 536K)

Transmittal letter (PDF) - From Arthur-Jean B. Williams, Acting Director, Enviornmental Fate and Effects Division, USEPA to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (September 17, 2007) (2 pp, 32K)

Input from Syngenta (PDF) - Letter from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environemtnal Protection Agency re: Supporting Data for EPA's Effect Determinations for Atrazine Relative to Three Federally Listed Endangered Freshwater Mussels and Two Federally Listed Endangered Freshwater Fish. (August 14, 2007) (2 pp, 58K)

Transmittal memo (PDF) - From Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (August 29, 2007) (2pp, 38.9K)

Effects Determination (PDF) - Effects determination for atrazine relative to three listed freshwater mussel species (August 29, 2007) (173 pp, 7.3MB)

Effects Determination for Atrazine Relative to the Topeka Shiner and its Critical Habitat

Input from Syngenta (PDF) - Letter and Input from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environemtnal Protection Agency re: Comments on EPA's Effect Determinations for Atrazine Relative to Three Federally Listed endangered Freshwater Mussels [Catspaw (Epioblasma Obliquata Obliquata), Fat Pocketbook (Potamilus Capax), Northern Riffleshell (Epioblasma Torulosa Rangiana)] and Two Federally Listed Endangered Freshewater Fish [Pallid Sturgeon (Scaphirhynchus Albus), Topeka Shiner (Notropis Topeka)] (October 12, 2007) (21 pp, 536K)

Transmittal letter (PDF) - From Arthur-Jean B. Williams, Acting Director, Enviornmental Fate and Effects Division, USEPA to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (September 17, 2007) (2 pp, 30K)

Input from Syngenta (PDF) - Letter from Dan Campbell, Senior Regulatory Product Manager II, Syngenta Crop Protection Inc, to Arthur-Jean B. Williams, Office of Pesticide Programs, US Environemtnal Protection Agency re: Supporting Data for EPA's Effect Determinations for Atrazine Relative to Three Federally Listed Endangered Freshwater Mussels and Two Federally Listed Endangered Freshwater Fish. (August 14, 2007) (2 p., 58K)

Transmittal memo (PDF) - From Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (August 29, 2007) (2 pp, 38K)

Effects Determination (PDF) - Effects determination for atrazine relative to three listed freshwater mussel species (August 31, 2007) (109 pp, 3.25MB)

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Effects Determination for Atrazine Relative to Eight Listed Freshwater Mussel Species and Designed Critical Habitat

Transmittal letter (PDF) - From Arthur-Jean B. Williams, Environmental Fate and Effects Division to Bryan Arroyo, Acting Assistant Director for Endangered Species, U.S. Fish and Wildlife Service (March 14, 2007) (2 pp, 74K)

Comments from Syngenta (PDF) - From Syngenta to Arthur-Jean B. Williams, Environmental Fate and Effects Division (submitted electronically March 12, 2007) (30 pp, 838K)

Comments from Triazine Network (PDF) - From Triazine Network Chairman Jere L. White to Arthur-Jean B. Williams, Environmental Fate and Effects Division (submitted electronically March 12, 2007) (5 pp, 77K)

Comments from Natural Resources Defense Council (PDF) - From Natural Resources Defense Council (NRDC) to Arthur-Jean B. Williams, Environmental Fate and Effects Division (submitted electronically March 14, 2007) (10 pp, 98.31K)

Comments from CropLife America (PDF) - From Isi Siddiqui, Ph.D., Vice President, Science and Regualtory Affairs, CropLife America to Joy Schnackenbeck, Special Review and Reregistration Division, Office of Pesticide Programs (March 9, 2007) (2 pp, 495K)

Transmittal memo (PDF) - From Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (February 28, 2007) (2 pp, 105K)

Errata Sheet for Effects Determination (PDF) “Risks of Atrazine Use to Eight Federally Listed Endangered Freshwater Mussels- February 28, 2007” (1 p, 20K)

Effects Determination (PDF) - Effects determination for atrazine relative to eight listed freshwater mussel species and designated critical habitat (February 28, 2007) (200 pp, 7.7MB)

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Six Aquatic Chesapeake Bay Watershed Species and 1 Alabama River Watershed Species

U.S. FWS Response to Informal Consultation Request (PDF) on the Effects of Atrazine Re-registration on the Endangered Alabama Sturgeon and Endangered Dwarf Wedgemussel from Marjorie A. Nelson, Chief, Consultation & HCPs Branch, Consultation, Habitat Conservation Planning, Recovery and State Grants, U.S. Fish and Wildlife Service to Arthur Jean B. Williams, Associate Director, Environmental Fate and Effects Division, Office of Pesticide Programs, U.S. EPA (February 11, 2008) (18 pp, 1.13MB)

Input from Syngenta (PDF) - Letter and supporting documentation from Janis McFarland, Head, Regulatory Affairs, NAFTA, Syngenta Crop Protection, Inc. to James H. Lecky, Ph.D., Director, Office of Protected Resources, National Marine Fisheries Service regarding Syngenta's Review of the National Marine Fisheries Services' Letter of May 29, 2007 (and the accompanying technical appendix) Titled "Request for Endangered Species Act Section 7 Informal Consultation on the Environmental Protection Agency's Re-registration and use of Atrazine in the Chesapeake Bay Watershed, September 1, 2006". (August 9, 2007) (56 pp, 1.74MB)

Request for Baseline Status and Cumulative Effects Information (PDF) from Arthur Jean B. Williams, Associate Director, Environmental Fate and Effects Division, Office of Pesticide Programs, US EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service (June 7, 2007) (2 pp, 35.81K)

NMFS Response to Informal Consultation Request (PDF) for atrazine from James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service to Arthur Jean B. Williams, Associate Director, Environmental Fate and Effects Division, Office of Pesticide Programs, US EPA (May 29, 2007) (6 pp, 371K)

Transmittal letter (PDF)  for atrazine from Arthur-Jean B. Williams, Associate Director, Environemntal Fate and Effects Division to James Lecky, National Marine Fisheries Service and Bryan Arroyo, US Fish and Wildlife Service (August 31, 2006) (2 pp, 34K)

Transmittal letter (PDF) for amended assessments of atrazine from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to James Lecky, National Marine Fisheries Service and Bryan Arroyo, US Fish and Wildlife Service (March 21, 2007) (2pp, 26K)

Transmittal memo (PDF)  for effects determination for atrazine relative to 6 aquatic species in the Chesapeake Bay watershed from Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (August 31, 2006) (2 pp, 32K)

Effects Determination (AMENDED) for Atrazine relative to 6 aquatic species in the Chesapeake Bay watershed (PDF) (182 pp, 7.47MB)

Transmittal memo (PDF) for effects determination for atrazine relative to the Alabama Sturgeon in the Alabama river watershed from Anita Pease, Environmental Fate and Effects Division to Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division (August 31, 2006) (1 page, 21K)

Effects (AMENDED) Determination for Atrazine relative to the Alabama Sturgeon in the Alabama River watershed (PDF) (132 pp, 5.93MB)

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Barton Springs Salamander

Transmittal memo (PDF)of effects determination for atrazine relative to the Barton springs salamander from Anita Pease to Arthur-Jean Williams, Associate Director, Environmental Fate and Effects Division (August 22, 2006) (1 p, 32K)

Effects Determination for Atrazine relative to the Barton Springs Salamander (PDF) (103 pp, 4.8MB)

Pacific Salmon and Steelhead

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, National Marine Fisheries Service (August 1, 2003) (1 pg, 59.3K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch to Arthur-Jean B. Williams, Chief, Environmental Field Branch (August 1, 2003) (1 pg, 57.9K)

Atrazine Analysis (PDF) (25 pp, 217K)

Effects Determination for Acrolein

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (2 pp, 11.3K)

Memorandum (PDF) from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 12.4K)

Acrolein Analysis (PDF) (49 pp, 377K)

Effects Determination for Oryzalin

NMFS Final Biological Opinion under the Endangered Species Act, Issued for Oryzalin, Triflualin, and Pendimethalin (PDF) (1096 pp, 20.23MB) related to Pesticides and Pacific Salmon and Steelhead Species (May 31, 2012)

EPA's May 11, 2012, Response to the NMFS March 30, 2012, Draft Biological Opinion on Oryzalin, Pendimethalin, and Trifluralin (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to Helen Golde, Ph.D., Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 11, 2012) (6 pp, 178K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (03/30/12) (786 pp, 16.80MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (2 pp, 75.6K)

Memorandum (PDF) from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 41.6K)

Oryzalin Analysis (PDF) (86 pp, 1.57MB)

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Effects Determination for Chlorpyrifos

EPA response to NMFS November 18, 2008 Final Biological Opinion (PDF) from Richard Keigwin, Director, Special Review and Reregistration Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (September 10, 2009) (21 pp, 333K)

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (484 pp, 11.04MB).

EPA response to NMFS July 31, 2008 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (6 pp, 459K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (381 pp, 10.41MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 105K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 53.3K)

Chlorpyrifos Analysis (PDF) (134 pp, 567K)

Effects Determination for Methomyl

EPA response to NMFS April 20, 2009 Final Biological Opinion (PDF) from Richard Keigwin, Director, Pesticide Re-evaluation Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 14, 2009) (20 pp, 888.73K)

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (609 pp, 11.87MB)

EPA response to NMFS March 18, 2009 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (10 pp, 720K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (608 pp, 11.38MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (2 pp, 73.3K)

Memorandum (PDF) from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 40.0K)

Methomyl Analysis (PDF) (82 pp, 1.75MB)

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Effects Determination for Carbaryl

Effects Determination for Carbaryl Relative to the Barton Springs Salamander

Transmittal letter (PDF) – from Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, USEPA to Bryan Arroyo, Acting Assistant Director for Endangered Species, US Fish and Wildlife Service (September 21, 2007) (2 pp, 30K)

Transmittal memo (PDF) – from Thomas Steeger, Ph.D., Senor Biologist, Environmental Fate and Effects Division, USEPA to Arthur-Jean B. Williams, Acting Director, Environmental Fate and Effects Division, USEPA (September 20, 2007) (1 p, 30K)

Effects Determination (inclusive of appendices) (PDF) – Effects determination for carbaryl relative to the Barton springs salamander, inclusive of appendices) (September 19, 2007) (602 pp, 12.30MB)

Effects Determination for Carbaryl Relative to 26 Pacific Salmon and Steelhead

EPA response to NMFS April 20, 2009 Final Biological Opinion (PDF) from Richard Keigwin, Director, Pesticide Re-evaluation Division, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (May 14, 2009) (20 pp, 888.73K)

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (609 pp, 11.87MB)

EPA response to NMFS March 18, 2009 Draft Biological Opinion (PDF) from Debra Edwards, Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (10 pp, 720K)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (608 pp, 11.38MB)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (2 pp, 77.1K)

Memorandum (PDF) from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 44.5K)

Carbaryl Analysis (PDF) (110 pp, 499K)

Effects Determination for Thiodicarb

Determination of no effects for Thiodicarb for Pacific Anadromous Salmonids (PDF) (03/31/03) (13 pp, 88K)

Effects Determination for Dicamba

Determination of no effect for Dicamba for Pacific Anadromous Salmonids (PDF) (03/27/03) (5 pp, 71K)

Effects Determination for Norflurazon

Determination of no effect for Norflurazon for Pacific Anadromous Salmonids (PDF) (03/27/03) (18 pp, 127K)

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Previous Determinations

Effects Determination for Three Forestry Pesticides

Transmittal Letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (2 pp, 48.5K)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (17 pp, 208K)

Determination of no effect for Triclopyr TEA for Pacific Anadromous Salmonids (11/30/02) (2 pp, 159K)

Effects Determination for Eight Forestry Pesicides

Transmittal Letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Everett Wilson, Chief, Division of Environmental Quality, U.S. Fish and Wildlife Service (2 pp, 22K)
Attachment
- 33 Listed Plant Species (1 p, 40K)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (30 pp, 150K)

Effects Determination for Paraquat

Determination of no effect for Paraquat Dichloride for Pacific Anadromous Salmonids (12/23/02) (13 pp, 68K)

Effects Determination for Triallate

Determination of no effect for Triallate for Pacific Anadromous Salmonids (11/30/02) (3 pp, 213K)

Effects Determination for Triclopyr TEA

Determination of no effect for Triclopyr TEA for Pacific Anadromous Salmonids (11/30/02) (2 pp, 159K)

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Effects Determination for Bensulide

Final Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (1011 pp, 15.48MB)

EPA Response to NMFS' June 16, 2010 Draft Biological Opinion (PDF) from Steven Bradbury, Ph.D., Director, Office of Pesticide Programs, U.S. EPA to James H. Lecky, Director, Office of Protected Resources, National Marine Fisheries Service, U.S. Department of Commerce (August. 19, 2010) (7 pp, 1.90 MB)

Draft Biological Opinion (PDF) under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (942 pp, 14.9 MB)

Transmittal letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 242K)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 102K)

Bensulide Analysis (776K)

Effects Determination for Fenbutatin Oxide on Pacific Anadromous Salmonids (11/29/02)

Draft Biological Opinion under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (05/01/13)

Transmittal letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 240K)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 93K)

Fenbutatin Oxide Analysis of Risks to Endangered and Threatened Salmon and Steelhead (111 pp, 339K)

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Effects Determination of Metolachlor on Pacific Anadromous Salmonids (11/29/02)

Transmittal letter of Refined Metolachlor Analysis from Arthur-Jean B. Williams, Associate Director, Environmental Fate and Effects Division to James Lecky, Director, Office of Protected Resources National Marine Fisheries Service, June 23, 2006 (3 pp, 37K)

Refined Metolachlor Analysis of Risks of Endangered and Theatened Salmon and Steelhead, June 19, 2006 (534 pp, 10MB)

Transmittal letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 203K)

Memorandum from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (2 pp, 87K)

Metolachlor Analysis of Risks to Endangered and Threatened Salmon and Steelhead (81 pp, 294K)

Effects Determination of Prometryn on Pacific Anadromous Salmonids (11/29/02)

Transmittal letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, Office of Protected Resources (3 pp, 200K)

Memorandum from Larry Turner, Ph.D., and William Erickson, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 69K)

Prometryn Analysis of Risks to Endangered and Threatened Salmon and Steelhead (71 pp, 270K)

Determination of no effect for Alachlor on Pacific Anadromous Salmonids (5/30/02) (4 pp, 72K)

Determination of no effect for Bentazon on Pacific Anadromous Salmonids (5/28/02) (5 pp, 27K)

Determination of no effect for Pebulate on Pacific Anadromous Salmonids (5/30/02) (4 pp, 24K)

Effects Determinations for Propargite on Pacific Anadromous Salmonids (8/1/02)

Draft Biological Opinion under the Endangered Species Act, by the National Marine Fisheries Service, related to Pesticides and Pacific Salmon and Steelhead species (05/01/13)

Transmittal letter from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, of Office of Protected Resources (3 pp, 64K)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (1 p, 57K)

Propargite Analysis of Risks to Endangered and Threatened Salmon and Steelhead (80 pp, 457K)

Effects Determinations for Molinate and Thiobencarb on Pacific Anadromous Salmonids

NMFS' July 2, 2012 Final Biological Opinion under the Endangered Species Act, issued for Molinate and Thiobencarb related to Pesticides and Pacific Salmon and Steelhead (July 2, 2012)

Transmittal letter (PDF) from Arthur-Jean B. Williams, Chief, Environmental Field Branch, to Don R. Knowles, Director, of Office of Protected Resources (8/1/02) (3 pp, 64K)

Memorandum (PDF) from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (8/1/02) (22 pp, 219K)

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