Final PEIS and Appendices

This Final Programmatic Environmental Impact Statement (FPEIS) analyzed the potential environmental consequences of implementing the Navajo Nation Integrated Weed Management Plan on Navajo Trust Land and Navajo Indian Allotments. The PEIS was prepared in compliance with the National Environmental Policy Act (NEPA) guidelines as set by the Council of Environmental Quality in 40 CFR 1500-1508 and Indian Affairs National Environmental Policy Act (NEPA) Guidebook 59 IAM 3-H.  The alternatives evaluated in this Programmatic Environmental Impact Statement (PEIS) include: Alternative 1 - the No Action; Alternative 2 - the Proposed Action; and Alternative 3 – the No Biological Control Alternative.

Based on the BIA’s Record of Decision, made in December 2022, the Navajo Region will proceed with Alternative 2.

Mitigation measures included in the Final PEIS for the Integrated Weed Management Plan will help protect sensitive species from potential impacts from weed treatments.

The main chapters of this document describe the purpose and need for the plan; alternatives including the proposed action; the affected environment; environmental consequences; cumulative impacts; and consultation and coordination. The appendices include the Navajo Nation Integrated Weed Management Plan; Scoping Report; the Final Biological Assessment for federally and tribally listed species; the Navajo Nation Cultural Resource Permit Process; and additional information on the resource analysis for soils, vegetation, and herbicide impacts.

Document Links

• Volume I – Final PEIS (7.8 MB)

• Volume II – Final PEIS Appendices (17.9 MB)

• Appendix A. Navajo Nation Integrated Weed Management Plan (6 MB)

• Appendix B. List of Preparers (185KB)

• Appendix C. References Cited (366 KB)

• Appendix D. Scoping Report (6.4 MB)

• Appendix E. Navajo Nation Department of Fish and Wildlife Potential Habitat Maps (4.4 MB)

• Appendix F. Mitigation and Species Protection Measures (8.81 MB)

• Appendix G. Best Management Options by Noxious Weed Species (209 KB)

• Appendix H. Navajo Nation Cultural Resource Permit Process Document (5.1 MB)

• Appendix I. Biological Assessment (2.3 MB)

• Appendix J. Navajo Nation Soils (5.4 MB)

• Appendix K. Analysis of Herbicides Unique to the Navajo Nation IWMP (349 KB)

• Appendix L. Vegetation Analysis Supplement (4.6MB)

• Appendix M. Response to Comment Report (428 KB)

• Notice of Intent (200 KB)

• Notice of Availability for Draft PEIS (200 KB)

• Notice of Availability for Final PEIS (203 KB)