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United Lower Skokomish Vegetation States Department of Management Agriculture Forest Preliminary Service December 2015 Environmental Assessment Hood Canal Ranger District, Olympic National Forest Mason County, Washington USDA Non-Discrimination Policy Statement DR 4300.003 USDA Equal Opportunity Public Notification Policy (June 2, 2015) In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident. Persons with disabilities who require alternative means of communication fo r program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should contact the responsible Agency or USDA’s TARGET Center at (202) 720-2600 (voice and TTY) or contact USDA through the Federal Relay Service at (800) 877-8339. Additionally, program information may be made available in languages other than English. To file a program discrimination complaint, complete the USDA Program Discrimination Complaint Form, AD-3027, found online at http://www.ascr.usda.gov/complaint_filing_cust.html and at any USDA office or write a letter addressed to USDA and provide in the letter all of the information requested in the form. To request a copy of the complaint form, call (866) 632-9992. Submit your completed form or letter to USDA by: (1) mail: U.S. Department of Agriculture, Office of the Assistant Secretary for Civil Rights, 1400 Independence Avenue, SW, Washington, D.C. 20250 - 9410; (2) fax: (202) 690-7442; or (3) email: [email protected] . USDA is an equal opportunity provider, employer and lender. Lower Skokomish Vegetation Management Project Preliminary Environmental Assessment Table of Contents Executive Summary ............................................................................................... v 1.0 INTRODUCTION.............................................................................................................. 6 1.1 Document Structure ......................................................................................... 6 1.2 Relationship to the Forest Plan and Other Management Direction ............. 6 1.3 Project Location ............................................................................................... 9 1.4 Purpose of and Need For Action ................................................................... 10 1.5 Proposed Action ............................................................................................. 12 1.6 Decision Framework ...................................................................................... 13 1.7 Project Implementation .................................................................................. 13 1.8 Project Scoping/Public Involvement ............................................................ 13 1.9 Issues .............................................................................................................. 14 2.0 THE PROPOSED ACTION AND ALTERNATIVES ....................................................... 15 2.1 Development of the Proposed Action .......................................................... 15 2.2 Development of Alternatives to the Proposed Action ................................. 15 2.3 Alternatives Considered but Eliminated From Further Analysis ............... 15 2.4 Alternatives Considered in Detail ................................................................. 16 2.4.1 Alternative A No Action .......................................................................................... 16 2.4.2 Alternative B The Proposed Action ........................................................................ 16 2.4.3 Project Design Criteria ........................................................................................... 27 2.4.4 Seasonal Operating Restrictions ........................................................................... 48 3.0 ENVIRONMENTAL CONSEQUENCES ......................................................................... 51 3.1 Silviculture ...................................................................................................... 52 Affected Environment ..................................................................................................... 52 Environmental Consequences ........................................................................................ 55 3.2 Soils and Slope Stability ................................................................................ 59 Affected Environment ..................................................................................................... 63 Environmental Consequences ........................................................................................ 67 3.3 Fisheries and Water Quality .......................................................................... 77 Affected Environment ..................................................................................................... 77 Environmental Consequences ........................................................................................ 80 3.4 Botanical Resources ...................................................................................... 99 Affected Environment ................................................................................................... 100 Environmental Consequences ...................................................................................... 101 3.5 Wildlife Resources ....................................................................................... 106 Affected Environment ................................................................................................... 108 Environmental Consequences ...................................................................................... 134 3.6 Fire and Fuels ............................................................................................... 149 Affected Environment ................................................................................................... 150 Environmental Consequences ...................................................................................... 150 3.7 Recreation and Scenery............................................................................... 152 Affected Environment ................................................................................................... 153 Environmental Consequences ...................................................................................... 155 3.7 Economic Viability ....................................................................................... 160 Environmental Consequences ...................................................................................... 161 i Lower Skokomish Vegetation Management Project Preliminary Environmental Assessment 3.8 Cultural Resources ...................................................................................... 162 Affected Environment ................................................................................................... 163 Environmental Consequences ...................................................................................... 165 3.9 Climate Change ............................................................................................ 167 3.10 Other Effects and Required Disclosures .................................................. 170 National Forest Management Act Compliance .............................................................. 171 Forest Plan Consistency .............................................................................................. 171 Effects on Inventoried Roadless Areas ......................................................................... 171 Effects on Wilderness Areas or Potential Wilderness Areas ......................................... 171 Clean Water Act ........................................................................................................... 172 Clean Air Act ................................................................................................................ 172 Irreversible Commitment of Resources......................................................................... 172 Irretrievable Commitment of Resources ....................................................................... 172 Adverse Effects That Cannot Be Avoided ..................................................................... 172 Conflicts with Plans, Policies, or Other Agencies and Jurisdictions .............................. 173 Effects on Prime Farm Land, Range Land, and Forest Land ........................................ 173 Potential or Unusual Expenditures of Energy ............................................................... 173 Effects on Wetlands and Floodplains ........................................................................... 173 Effects on American Indians ........................................................................................