Chehalis River Basin Flood Damage Reduction Project
The Corps has prepared a Draft EIS evaluating the Chehalis River Basin Flood Control Zone District’s proposal under the National Environmental Policy Act (NEPA). The Corps has determined that the proposal could have significant adverse environmental impacts, requiring formal
studies of probable impacts through a NEPA EIS. Ecology has conducted a separate, but synchronized review under SEPA and prepared a Draft SEPA EIS. The SEPA process is currently paused per an order from the Governor of Washington.
What Is NEPA?
NEPA requires federal agencies to consider environmental values alongside the technical and economic considerations that are inherent factors in federal permit decision making. It is important to emphasize that no permit decisions can be made until after the environmental review process is complete.
Draft Environmental Impact Statement
The EIS evaluation found that the proposed project would potentially affect water quantity and quality, geology and geologic hazards, geomorphology, wetlands and other waters, aquatic species and habitat, terrestrial species and habitat, air quality, visual quality, noise and vibration, land use, recreation, cultural resources, transportation, public services and utilities, environmental health and safety, socioeconomics, and environmental justice.
The EIS is available for download and review at the links below. The EIS and appendices are in Adobe PDF format, and are compatible with assistive technology such as screen readers.
- Executive Summary, Chehalis River Basin Flood Damage Reduction Project Draft NEPA EIS
- Chehalis River Basin Flood Damage Reduction Project Draft NEPA EIS
- Appendix A, Distribution List
- Appendix B, List of Preparers
- Appendix C, References Cited in the Environmental Impact Statement
- Appendix D, Selection and Description of the Alternatives
- Appendix E, Impact Levels
- Appendix F, Regulatory Context and Permits and Approvals
- Appendix G, Discipline Report for Water Quantity and Quality
- Appendix H, Discipline Report for Geology and Geologic Hazards
- Appendix I, Discipline Report for Geomorphology
- Appendix J, Discipline Report for Wetlands and Other Waters
- Appendix K, Discipline Report for Aquatic Species and Habitats
- Appendix L, Discipline Report for Terrestrial Species and Habitats
- Appendix M, Air Quality Impact Analysis
- Appendix N, Visual Quality Impact Analysis
- Appendix O, Noise Impact Analysis
- Appendix P, Socioeconomics Impact Analysis
- Appendix Q, Environmental Justice Impact Analysis
Public Comments on the Draft EIS
The Corps requested comments from members of the public, organizations, tribes, and government agencies about the EIS between September 18, 2020, and November 17, 2020, and will review and consider all comments received. The comments are available below as PDF files, organized by the type of commenter.
The public scoping period was held from September 28 through October 29, 2018, which is the first step in the EIS process. The purpose of scoping is to receive public input on the scope of the NEPA EIS to help identify project alternatives, probable significant adverse impacts, potential mitigation measures, and licenses or other approvals that may be required. Scoping comments have been summarized in the NEPA Scoping Report. The scoping report summarizes input received on what should be included in the draft EIS.
Visit the EIS Scoping page for more information on the scoping process and to view scoping materials.
Corps EIS Project Manager
ph: (206) 316-3164
ph: (206) 764-3760
cell: (206) 618-4324