Draft Environmental Impact Statement/ Environmental Impact Report
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United States Department of Draft Agriculture Forest Environmental Impact Statement/ Service Environmental Impact Report Pacific Southwest Region Lake Tahoe Basin Management Unit Lake Tahoe Basin South Shore Fuel Reduction and Management Unit Healthy Forest Restoration EIS/EIR R5-MB-177 Forest Supervisor’s Office March 2009 Lake Tahoe Basin Management Unit South Lake Tahoe, California 96150 South Shore from Heavenly Valley The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer. DRAFT ENVIRONMENTAL IMPACT STATEMENT/ ENVIRONMENTAL IMPACT REPORT Lake Tahoe Basin Management Unit South Shore Fuel Reduction and Healthy Forest Restoration El Dorado County, California Lead Agency: USDA Forest Service Responsible Official: Terri Marceron, Forest Supervisor Lake Tahoe Basin Management Unit 35 College Drive, South Lake Tahoe, CA 96150 Information Contact: Sue Rodman, Team Co-Leader Duncan Leao, Team Co-Leader Lake Tahoe Basin Management Unit 35 College Drive, South Lake Tahoe, CA 96150 (530) 621-5295, for Sue Rodman (530) 543-2660, for Duncan Leao e-mail, [email protected] Abstract: The Draft Environmental Impact Statement (DEIS) documents the analysis of three alternatives (1, 2, and 3) to manage fuel reduction and forest health in the wildland- urban intermix (WUI). Alternative 1 proposes no action; fuel loads would continue to increase and urban areas would remain at risk for high intensity wildfire. Alternative 2 would reduce hazardous fuel and improve forest health on 10,671 acres. Alternative 2 emphasizes thinning to change wildfire behavior from high intensity crown fires to low intensity surface fire by removing smaller trees that act as fuel ladders and increasing spacing between trees. Forest health would improve by reducing basal area to attain forest densities with improved resistance to drought, insects, and disease. More acres would use mechanical equipment, including within SEZs and wildlife areas than in Alternative 3. Alternative 3 was developed in response to public comments received on the Proposed Action during scoping to reduce impacts to watersheds and wildlife, while still reducing the risk of high-intensity crown fire. This Alternative reduces hazardous fuel and improves forest health in the WUI on 10,112 acres. Eldorado National Forest Final EIS Table of Contents Executive Summary.............................................................................................i Chapter 1. Purpose and Need for Action ........................................................ 1-1 Document Structure ............................................................................................................ 1-1 Background......................................................................................................................... 1-2 Purpose and Need for Action.............................................................................................. 1-5 Proposed Action.................................................................................................................. 1-6 Decision Framework........................................................................................................... 1-6 Forest Plan Direction .......................................................................................................... 1-7 Public Involvement ........................................................................................................... 1-10 Issues................................................................................................................................. 1-11 Laws, Regulations, and Policies ....................................................................................... 1-12 Permits and Coordination ................................................................................................. 1-15 Chapter 2. Alternatives, Including the Proposed Action ....................... 2-1 Introduction......................................................................................................................... 2-1 Alternatives Considered in Detail....................................................................................... 2-1 Alternative 1 – No Action............................................................................................ 2-1 Features Common to Both Action Alternatives........................................................... 2-1 Alternative 2 – Proposed Action.................................................................................. 2-2 Alternative 3 ............................................................................................................. 2-33 Comparison of Treatment Changes Alternatives 2 and 3.......................................... 2-36 Alternatives Considered but Eliminated from Detailed Study ......................................... 2-39 Comparison of Alternatives .............................................................................................. 2-45 Chapter 3. Affected Environment & Environmental Consequences .. 3-1 Fire and Fuels...................................................................................................................... 3-3 Forest Vegetation.............................................................................................................. 3-33 Soil Resources................................................................................................................... 3-57 Water and Riparian Resources.......................................................................................... 3-79 Aquatic Wildlife.............................................................................................................. 3-111 Terrestrial Wildlife.......................................................................................................... 3-127 TRPA Special Interest Species ....................................................................................... 3-225 Management Indicator Species....................................................................................... 3-235 Sensitive Plants ............................................................................................................... 3-271 Noxious Weeds ............................................................................................................... 3-287 Air Quality ...................................................................................................................... 3-291 Heritage and Cultural Resources .................................................................................... 3-305 Scenic Resources ............................................................................................................ 3-309 Recreation ....................................................................................................................... 3-315 Transportation................................................................................................................. 3-323 Social and Economic Conditions and Effects................................................................. 3-329 Environmental Justice..................................................................................................... 3-333 Short-term Uses and Long-term Productivity................................................................. 3-333 Unavoidable Adverse Effects ......................................................................................... 3-333 Irreversible and Irretrievable Commitments of Resources ............................................. 3-334 Maps ............................................................................................................................. 3-335 Chapter 4. Monitoring .............................................................................................. 4-1 Consultation and Coordination.............................................................................. 4-7 Acronyms...................................................................................................................... 4-11 Glossary ........................................................................................................................ 4-13 References Cited ...................................................................................................... 4-15 Appendix A Past, Present, and Future Restoration Projects ............................................ A-1 Appendix B Limited Operating Periods for Special Status Species .................................. B-1 Appendix C Best Management Practices..........................................................................C-1 Appendix D Stream Environmental Zone Sensitivity Rating System.................................D-1 Appendix E VQO and Scenic Design Criteria.................................................................................E-1