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Pesticides: Endangered Species Protection Program
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Endangered Species Effects Determinations and Consultations; An Interim Process for Public Input

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 Endangered Species Consultation Process/Joint Regulation Published
 Court Ordered Limitations

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EPA is committed to assuring that pesticide registrants and the affected public have full access to information about the Agency's activities pursuant to the Endangered Species Act, including effects determinations and the content of materials supplied to the Services as part of the consultation process under the Act. EPA is also committed to assuring that the affected and interested public have an opportunity to provide any additional relevant information to assure that these consultations address the issues in the most scientifically sound and informed manner possible.

The interim public participation process described here will be in place for input on determinations to consult and input on candidate pesticides for review, until the Agency establishes a final public participation process. On December 2, 2002 the Agency issued a Federal Register Notice proposal about implementing our program to protect listed species. That proposal seeks public comment on, among other things, how best to ensure the public may participate in this program. A final public participation process will be established from the input received on that Notice.

1,3-dichloropropene | 2,4-D Ethylhexyl ester | Acephate | Acrolein | Atrazine | Azinphos-methyl | Bromacil and Lithium Bromacil | Captan | Carbaryl | Chlorpyrifos | Chlorothalonil | Coumaphos | Dicamba | Dichlobenil | Diflubenzuron | Dimethoate | Disulfoton | Diuron | Ethoprop | Fenamiphos | | GlyphosateNew! | HexazinoneNew! | Iprodione | Linuron | Methidathion | Methamidophos | Methomyl | Methyl Parathion | Metribuzin | Naled | Norflurazon | Oryzalin | Oxyfluorfen | Phorate | Phosmet | Simazine | Tebuthiuron | Terbacil | Thiodicarb | Triclopyr BEE | Trifluralin |

Public Notice Provisions

Candidate List

The Agency will publish on the internet a list of candidate pesticides for evaluation each six months. This list will include candidates for review, rather than be a definitive list of those pesticides on which we will make determinations; thus, the list will contain more pesticides than the number on which we must make determinations in that six-month period. Additionally, the Agency reserves the right to substitute pesticides not on the list, into the six month queue if it finds it necessary to do so. The candidate list (13 KB, PDF) will be posted every six months. The first candidate list is available now.

Effects Determinations Leading to Consultations

When the Agency makes an effects determination that requires consultation with the Services, that determination will be made public by posting a notice in the "Open Comments" section of the OPP home page at http://www.epa.gov/pesticides. Further, the materials that are being sent to the Service to request consultation will be posted below.

Public Input Provisions

Timing of Public Input

The public may submit input at any time relative to the candidate list. The earlier input is received in relation to an effects determination, the better opportunity the Agency has to consider the input while making its determination. Any information received close to or after the time the Agency has made its determination will be forwarded to the Services with the request for consultation, and considered during the consultation process.

Substance of Public Input

In its ecological risk assessments, the Agency receives and considers a variety of information regarding a pesticide registration. For example, data required for registration or reregistration, incident information submitted under section 6(a)(2) of FIFRA, and certain public literature are all reviewed and considered. Receiving information already in the Agency’s possession will not be of value since it was already considered in the core risk assessment for the pesticide. However, there is information to which the Agency does not routinely have access. This type of information would be useful in refining the potential risk posed by a pesticide to a particular species.

Examples of useful, pertinent information include:

  • studies or data on end-use products not already submitted to EPA,
  • product use information for States of concern relative to the species and the pesticide use, and
  • incident data not previously submitted.

Other information may also be of value. If you are unsure, you may check prior to submitting information for consideration (see “Submitting Information” below).Top

Submitting Information

EPA will establish a docket to receive information submitted for consideration. A Federal Register Notice will be published to notify the public that the docket is open, and will contain complete, detailed instructions for submitting information. EPA will announce publication of the Notice on this web page. However, we do not want to delay the opportunity for public input on the effects determinations or any of the candidate pesticides already posted. Until such time as the public docket is established the public may continue to submit input on determinations and on the candidate pesticides to:

Arthur-Jean B. Williams (7506C)
U.S. Environmental Protection Agency
1200 Pennsylvania Ave., NW
Washington, DC 20460

Please indicate clearly to which pesticide(s) the information applies.

Once established, the official public docket will remain open until a final public participation process is established. As effect determinations are made they will continue to be posted on our web site but will also be added to the docket as “supporting documents” Thus, one docket will serve to accept and provide access to input on many determinations and candidate pesticides.

Detailed information about the public docket and various forms in which information may be submitted can be found at www.epa.gov/oppfead1/endanger/effects/docketprocd.htm.
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Effects Determinations

Effects Determinations for Glyphosate on Pacific Salmonid ESUs

Transmittal letter 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) (19 KB, 2 pages, PDF)

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

Glyphosate Analysis (1.09 MB, 117 pages, PDF)

Effects Determinations for Hexazinone

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

Transmittal letter 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) (19 KB, 2 pages PDF)

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

Hexazinone Analysis (165 KB, 28 pages, PDF)

Effects Determinations for Metribuzin
Determination of No Effect for Metribuzin

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

Metribuzin Analysis
(691 KB, 90 pgs, PDF)

Effects Determinations for Oxyfluorfen
Determination of no effect for Oxyfluorfen

  • Memorandum from Nikiba Daughtry to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/23/04) (69 KB, 2 pgs, PDF)
  • Oxyfluorfen Analysis (327 KB, 35 pgs, PDF)

Effects Determinations for Coumaphos
Determination of no effect for Coumaphos

  • Memorandum from Jennifer Leyhe to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/28/04) (79 KB, 2 pgs, PDF)
  • Coumaphos Analysis (257 KB, 26 pgs, PDF)

Effects Determinations for Tebuthiuron
Determination of no effect for Tebuthiuron

  • Memorandum from Ann Stavola to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/29/04) (60 KB, 2 pgs, PDF)
  • Tebuthiuron Analysis (285 KB, 28 pgs, PDF)

Effects Determinations for Dimethoate

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

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

Dimethoate Analysis (386 KB, 115 pgs, PDF)

Effects Determinations for Diflubenzuron

Transmittal letter 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) (63 KB, 2 pgs, PDF)

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

Diflubenzuron Analysis (781 KB, 91 pgs, PDF))

Effects Determinations for 1,3-dichloropropene

Transmittal letter 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) (63 KB, 2 pgs, PDF)

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

1,3-dichloropropene Analysis (400 KB, 56 pgs, PDF)

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

Transmittal letter 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 pages, 19 KB, PDF)

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

2,4-D ethylhexyl ester Analysis (39 pages, 204 KB, PDF)

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

Transmittal letter 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 pages, 19 KB, PDF)

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

Triclopyr BEE Analysis (31 pages, 156 KB, PDF)

Effects Determinations for Acephate

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

Acephate Analysis (1.92 MB, 88 pages, PDF)

Effects Determinations for Naled

Transmittal letter 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) (11.3 KB, 2 pages, PDF)

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

Naled Analysis ( 364 KB, 64 pages, PDF)

Effects Determinations for Linuron

Transmittal letter 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) (8.28 KB, 2 pages, PDF)

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

Linuron Analysis (417 KB, 69 pages, PDF)

Effects Determinations for Methamidophos

Transmittal letter 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) (10.5 KB, 2 pages, PDF)

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

Methamidophos Analysis (408 KB, 65 pages, PDF)

Effects Determinations for Methidathion

Transmittal letter 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) (11.2 KB, 2 pages, PDF)

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

Methidathion Analysis (290 KB, 57 pages, PDF)

Effects Determinations for Methyl Parathion

Transmittal letter 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) (11.0 KB, 2 pages, PDF)

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

Methyl Parathion Analysis (310 KB, 57 pages, PDF)

Effects Determinations for Trifluralin

Transmittal letter 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) (10.9 KB, 2 pages, PDF)

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

Trifluralin Analysis (300 KB, 63 pages, PDF)

Effects Determinations for Captan

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

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

Captan Analysis (70 KB, 92 pages, PDF)

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Effects Determinations for Chlorothalonil

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

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

Chlorothalonil Analysis (683 KB, 132 pages, PDF)

Effects Determinations for Disulfoton

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

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

Disulfoton Analysis (551 KB, 94 pages, PDF)

Effects Determinations for Ethoprop

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

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

Ethoprop Analysis (714 KB, 80 pages, PDF)

Effects Determinations for Fenamiphos

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

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

Fenamifos Analysis (490 KB, 79 pages, PDF)

Effects Determination for Iprodione

Determination of no effects for Iprodione for Pacific Anadromous Salmonids (150 KB, 14 pages, PDF)

Effects Determinations for Phosmet

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

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

Phosmet Analysis (915 KB, 173 pages, PDF)

Effects Determinations for Bromacil and Lithium Bromacil

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

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

Bromacil and Lithium Bromacil Analysis (320 KB, 45 pages, PDF)

Amended Formal Consultation Request for Diazinon (24.6 KB, 1 page, PDF)

Effects Determination for Terbacil

Determination of no effect for Terbacil for Pacific Anadromous Salmonids (07/29/03) (629 KB, 13 pages, PDF) Top

Effects Determination for Simazine

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

Transmittal letter from EPA to NOAA, (44 KB, 2 page, PDF)

Memorandum from Larry Turner, Ph.D., Environmental Field Branch, to Arthur-Jean B. Williams, Chief, Environmental Field Branch (07/29/03)(43 KB, 1 page, PDF)

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

Effects Determination for Azinphos-methyl

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

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

Azinphos-methyl Analysis (July 23, 2003) (290 KB, 105 pages, PDF)

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Effects Determination for Dichlobenil

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

Dichlobenil Analysis of Risks (709 KB, 33 pages, PDF)

Effects Determination for Phorate

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

Memorandum 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) (21 KB, 2 pages, PDF)

Phorate Analysis (81 KB, 72 pages, PDF)

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Effects Determination for Diuron

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

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

Diuron Analysis (1,113 KB, 115 pages, PDF)

Effects Determination for Atrazine

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

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

Atrazine Analysis (217 KB, 25 pages, PDF)

Effects Determination for Acrolein

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

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

Acrolein Analysis (377 KB , 49 pages, PDF)

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Effects Determination for Oryzalin

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

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

Oryzalin Analysis (1.57 MB, 86 pages, PDF)

Effects Determination for Chlorpyrifos

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

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

Chlorpyrifos Analysis (567 KB, 134 pages, PDF)

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Effects Determination for Methomyl

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

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

Methomyl Analysis (1.75 MB, 82 pages, PDF)

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Effects Determination for Carbaryl

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

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

Carbaryl Analysis (499 KB, 110 pages, PDF)

Effects Determination for Thiodicarb

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

Effects Determination for Dicamba

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

Effects Determination for Norflurazon

Determination of no effect for Norflurazon for Pacific Anadromous Salmonids (03/27/03) (127 KB, 18 pages, PDF)Top


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 (48.5 KB, 2 pages, PDF)

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

Determination of no effect for Triclopyr TEA for Pacific Anadromous Salmonids (11/30/02) (159 KB, 2 pages, PDF)

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 (22 KB, 2 pages, PDF)
Attachment
- 33 Listed Plant Species (40 KB, 1 page, PDF)

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

Effects Determination for Paraquat

Determination of no effect for Paraquat Dichloride for Pacific Anadromous Salmonids (12/23/02) (68 KB, 13 pages, PDF)

Effects Determination for Triallate

Determination of no effect for Triallate for Pacific Anadromous Salmonids (11/30/02) (213 KB, 3 pages, PDF)

Effects Determination for Triclopyr TEA

Determination of no effect for Triclopyr TEA for Pacific Anadromous Salmonids (11/30/02) (159 KB, 2 pages, PDF)

Effects Determination for Bensulide

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

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

Bensulide Analysis (776 KB, PDF)

Effects Determinations for Diazinon on Pacific Andromous Salmonids (11/29/02)

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

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

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

Effects Determination for Fenbutatin Oxide 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 (240 KB, 3 pages, PDF)

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

Fenbutatin Oxide Analysis of Risks to Endangered and Threatened Salmon and Steelhead (339 KB, 111 pages, PDF)

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Effects Determination of Metolachlor 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 (203 KB, 3 pages, PDF)

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

Metolachlor Analysis of Risks to Endangered and Threatened Salmon and Steelhead (294 KB, 81 pages, PDF)

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 (200 KB, 3 pages, PDF)

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

Prometryn Analysis of Risks to Endangered and Threatened Salmon and Steelhead (270 KB, 71 pages, PDF)

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