NEPA) and Other Relevant Federal and State Laws and Regulations
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United States Department of ENVIRONMENTAL ASSESSMENT Agriculture Forest Service Shoal Creek Project Potosi/Fredericktown Ranger District Mark Twain National Forest Region 9 Crawford, Iron, and Washington Counties, Missouri PALS #18216 Mark Twain National Forest, June 2007 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. Table of Contents Chapter 1. Purpose of and Need for Action ................................................................................. 1 Document Structure .................................................................................................................... 1 Purpose and Need for Action ...................................................................................................... 1 Background (Need for Action) .................................................................................................... 2 Purpose of the Actions ................................................................................................................ 2 Project Location .......................................................................................................................... 3 Background ................................................................................................................................. 3 Forestwide Standards and Guidelines ....................................................................................... 10 Management Area Prescriptions ............................................................................................... 10 Goals ......................................................................................................................................... 11 Desired Conditions .................................................................................................................... 11 Proposed Action ........................................................................................................................ 12 Decision Framework ................................................................................................................. 13 Public Involvement ................................................................................................................... 13 Issues ......................................................................................................................................... 13 Relationship to Other Documents ............................................................................................. 15 Chapter 2. Alternatives, Including the proposed action ........................................................... 16 Introduction ............................................................................................................................... 16 Alternatives Considered in Detail ............................................................................................. 16 Alternatives Considered but Eliminated from Detailed Study .................................................. 24 Mitigation Common to Action Alternatives.............................................................................. 25 Comparison of Alternatives ...................................................................................................... 28 Chapter 3. Affected Environment and Environmental Consequences .................................... 34 Vegetation - Historical Perspective ............................................................................................. 35 Vegetation - Existing Condition of Structure and Composition .............................................. 39 Environmental Effects Common to Alternatives 2 and 3 ......................................................... 41 Vegetation - Direct and Indirect Effects ..................................................................................... 43 Vegetation - Cumulative Effects .................................................................................................. 47 Economics - Existing Condition .................................................................................................. 50 Economics - Environmental Consequences ................................................................................ 50 Economics - Direct and Indirect Effects ..................................................................................... 51 Soils - Existing Condition ............................................................................................................. 54 Soils – Direct and Indirect Effects............................................................................................... 55 Soils - Cumulative Effects ............................................................................................................ 63 Soils – Summary of Effects .......................................................................................................... 66 Water - Existing Condition .......................................................................................................... 68 Water – Direct and Indirect Effects ............................................................................................ 76 Water - Cumulative Effects ......................................................................................................... 84 Water – Summary of effects ........................................................................................................ 89 ii Wildlife - Existing Condition ....................................................................................................... 90 Wildlife – Direct, Indirect, and Cumulative Effects ................................................................ 101 Non-Native Invasive Species (NNIS) ......................................................................................... 147 Fisheries and Aquatics - Existing Condition ............................................................................ 155 Fisheries and Aquatics – Direct and Indirect Effects .............................................................. 158 Fisheries and Aquatics - Cumulative Effects ........................................................................... 160 Air Quality - Existing Condition ............................................................................................... 162 Air Quality - Direct and Indirect Effects ................................................................................. 163 Air Quality - Cumulative Effects .............................................................................................. 166 Recreation Resources - Existing Condition .............................................................................. 166 Recreation Resources - Direct and Indirect Effects ................................................................ 168 Recreation Resources - Cumulative Effects ............................................................................. 170 Visual Resources - Existing Condition ..................................................................................... 171 Visual Resources - Direct and Indirect Effects ........................................................................ 175 Visual Resources - Cumulative Effects ..................................................................................... 176 Heritage Resources - Existing Condition ................................................................................. 178 Heritage Resources – Direct and Indirect Effects ................................................................... 179 Heritage Resources - Cumulative Effects ................................................................................. 181 Transportation System - Existing Condition ........................................................................... 182 Transportation System - Direct and Indirect Effects .............................................................. 184 Transportation System - Cumulative Effects ........................................................................... 187 Social Effects ............................................................................................................................... 189 Chapter 4. Consultation and Coordination.............................................................................. 192 Preparers and Contributors .......................................................................................................192 Chapter 5 Appendices iii CHAPTER 1. PURPOSE OF AND NEED FOR ACTION Document Structure The Forest Service has prepared this Environmental Assessment in compliance with the National Environmental Policy Act (NEPA) and other relevant Federal and State laws and regulations. This Environmental Assessment discloses the direct, indirect, and cumulative