Final National Level Listed Species Biological Evaluation for Methomyl

In March 2021, EPA released the final Biological Evaluation (BE) assessing risks to listed species from labeled uses of methomyl. Listed species refers to those that are federally listed as endangered or threatened, as well as experimental populations and those species that are proposed and candidates for listing. EPA used these BEs to initiate formal consultation under the Endangered Species Act (ESA) section 7(a)(2) and its implementing regulation at 50 CFR Part 402.46, Optional Formal Consultation Procedures for FIFRA Actions The final BE was conducted according to the Revised Method for national level endangered species risk assessment process.  

The final BE for methomyl is provided below. The models and tools used to conduct this BE can be found here.

EPA solicited public comments on the draft BE for methomyl, incorporated public comments where appropriate in the final BE, and prepared a response to comments document. Response to Comments on the Biological Evaluations for carbaryl and methomyl (PDF) (78 pp, 867 K)

• Final Methomyl Executive Summary 
• Chapter 1: Final Methomyl Problem Formulation
  • Attachments
  • Appendices
• Chapter 2: Final Methomyl Effects Characterization
  • Attachments
  • Appendices
• Chapter 3: Final Methomyl Exposure Characterization
  • Attachments
  • Appendices
• Chapter 4: Final Methomyl Effects Determinations
  • Attachments
  •  Appendices

Final Methomyl Executive Summary (DOCX)(5 pp, 59 K)

Chapter 1: Final Methomyl Problem Formulation (DOCX)(8 pp, 66 K)

Attachments

• ATTACHMENT 1-1. Methodology for Estimating Exposures to Terrestrial Animals (mammals, birds, reptiles, amphibians and invertebrates (DOCX)(17 pg, 102 K)
• ATTACHMENT 1-2. Aquatic Bin Assignments (XLSX)(1 pg, 449 K)
• ATTACHMENT 1-3. Explanation of Census Of Agriculture Table Generation (PDF)(6 pp, 396 K)
• ATTACHMENT 1-4. Usage Data Source Summary-Crosswalk (PDF)(2 pp, 1.9 MB)
• ATTACHMENT 1-5. PVP Analysis (DOCX) (15 pp, 1.2 MB)

Appendices

• APPENDIX 1-1. List of Current Methomyl Registrations (DOCX)(2 pg, 45 K)
• APPENDIX 1-2. Master Use Summary Table for Methomyl (DOCX)(28 pp, 73 K)
• APPENDIX 1-3. Methomyl Scenario Development for Aquatic Modeling (DOCX)(6 pp, 47 K)
• APPENDIX 1-4. Usage Data for Methomyl - SUUM (PDF)(27 pp, 1.3 MB)
• APPENDIX 1-5. CDL to UDL Crosswalk for Methomyl (DOCX)(18 pp, 190 K)
• Appendix 1-6. Use Site Footprint for Methomyl (DOCX)(14 pp, 604 K)
• Appendix 1-7. Determination of Overlap of Likely Methomyl Exposure Area and Listed Species Ranges and Critical Habitat for Species Located in the 48 Contiguous United States (ConUS) (DOCX)(22 pp, 1.42 MB)
• Appendix 1-8. Determination of Overlap of Methomyl Exposure Area and Species Ranges and Critical Habitat for Species Located Outside of the 48 Contiguous States (NL48) (DOCX)(14 pp, 405 K)

Chapter 2: Final Methomyl Effects Characterization (DOCX)(76 pp, 1.9 MB)

Attachments

• ATTACHMENT 2-1. Effects Arrays (DOCX)(1 pg, 34 K)
• ATTACHMENT 2-2. Ecological Incidents (DOCX)(2 pp, 30 K)

Appendices

• APPENDIX 2-1. Data Used in the Data Array (Methomyl) (XLSX)(1 pg, 1.12 MB)
• APPENDIX 2-2. Accepted ECOTOX Database (Methomyl) (XLSX)(1 pg, 1.12 MB)
• APPENDIX 2-3. Open Literature Review Summaries for Methomyl (DOCX)(71 pp, 4.9 MB)
• APPENDIX 2-4. Methomyl Studies Submitted to US EPA [from Office of Pesticide Programs Information Network (OPPIN)] (DOCX)(398 pp, 271 K)
• APPENDIX 2-5. Methomyl Species Sensitivity Distribution Analysis for Fish (DOCX)(15 pp, 843 K)
• APPENDIX 2-6: Methomyl Species Sensitivity Distribution Analysis for Aquatic Invertebrates (DOCX)(11 pp, 289 K)

Chapter 3: Final Methomyl Exposure Characterization (DOCX) (31 pp , 738 K)

Attachments

• ATTACHMENT 3-1. Background Document: Aquatic Exposure Estimation for Endangered Species (DOCX)(29 pp, 649 K)

Appendices

• APPENDIX 3-1. Supporting Material For Aquatic Modeling (Methomyl) (XLSX)(1 pg, 629 K)
• APPENDIX 3-2. Aquatic Modeling Runs (Methomyl) Please save this file prior to opening (ZIP)(1 pg, 638 K)

Chapter 4: Final Methomyl Effects Determinations (DOCX)(16 pp, 103 K)

Attachments

• ATTACHMENT 4-1. Criteria for Strength of Evidence in LAA Determination (DOCX)(9 pp, 67 K)

Appendices

• APPENDIX 4-1. Species Effects Determination Tables (XLSX)(1 pg, 6.1 MB)
• APPENDIX 4-2. Input Parameters for MAGtool (XLSX)(1 pg, 24 MB)
• APPENDIX 4-3. Curve Number Scaling Factors (XLSX)(1 pg, 352 K)
• APPENDIX 4-4. Application Date Scaling Factors (XLSX)(1 pg, 60.3 MB)
• APPENDIX 4-5. Analysis of Granular and Fly Bait Uses (DOCX)(4 pp, 43 K)
• APPENDIX 4-6. Analysis Method and Results for Downstream Monitoring (DOCX)(12 pp, 42 K)
• APPENDIX 4-7. Downstream Monitoring Analysis (XLSX)(1 pg, 2.4 MB)
• APPENDIX 4-8. Additional Qualitative Species Analyses (DOCX)(5 pp, 40K)
• APPENDIX 4-9. MAGtool and Weight of Evidence Output for Individual Species (ZIP) (1 pg, 44.5 MB)