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Eightmile Vegetation Management United States Department of DRAFT Agriculture Environmental Forest Service Assessment August 2011 Libby, Little Bridge, Newby, and Poorman Allotment Management Plans Revision USDA Forest Service Okanogan- Wenatchee National Forest Responsible Official: Rebecca L. Heath Forest Supervisor 215 Melody Lane Wenatchee, Washington 98801 For Information Contact: John Rohrer Wildlife, Range and Weeds Program Lead 24 West Chewuch Road Winthrop, Washington 98862 509-996-4001 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. LLBNP Allotment Management Plan Revision Draft Environmental Assessment TABLE OF CONTENTS Chapter 1 – Introduction 1-1 Background 1-1 Project Area 1-2 Management Direction and Guidance 1-4 Purpose and Need 1-9 Proposed Action 1-10 Consultation and Public Involvement 1-10 Chapter 2 – Alternatives 2-1 Alternative Formulation 2-1 Alternatives Considered but Eliminated 2-1 Alternative 1 2-2 Alternative 2 2-2 Alternative Comparison Chart 2-13 Chapter 3 – Affected Environment and Environmental Consequences 3-1 3.1 Range Resources 3-3 3.2 Aquatic Resources 3-39 3.3 Aquatic Conservation Strategy 3-62 3.4 Soils 3-71 3.5 Water Resources 3-76 3.6 Terrestrial Wildlife 3-88 3.7 Botanical Resources 3-121 3.8 Invasive Plant Species 3-129 3.9 Economic and Social 3-141 3.10 Cultural Resources 3-144 3.11 Other Required Disclosures 3-146 Chapter 4 – Consultation and Coordination with Other Agencies 4-1 Appendix A: Response to Comments A-1 Appendix B: Aquatic Management Indicator Species Analysis B-1 Appendix C: Plant Species List C-1 Appendix D: Invasive Plant Species Prevention and Management Strategy D-1 Appendix E: Characteristics of Invasive Plant Species E-1 Literature Citations F-1 i LLBNP Allotment Management Plan Revision Draft Environmental Assessment CHAPTER 1 – INTRODUCTION Background This Environmental Assessment (EA) was prepared in compliance with the National Environmental Policy Act (NEPA) and other relevant laws and regulations. It discloses the resource concerns, alternatives and environmental consequences of proposed livestock grazing activities on the Libby, Little Bridge, Newby, and Poorman allotments of the Methow Valley Ranger District. Additional documentation, including more detailed analyses of project area resources, may be found in the project planning record located at the Methow Valley Ranger District Office in Winthrop, Washington. It is Forest Service policy to make forage available to qualified livestock operators from lands suitable for grazing (FSM 2203.1, USDA Forest Service 2005a). Suitable Forest Service lands that are available for livestock grazing may be designated as allotments. Allotment Management Plans (AMPs) specify the actions to be taken to manage and protect the rangeland resources and reach a given set of objectives. Grazing permits authorize permittees to graze livestock on National Forest System lands. The Libby, Little Bridge, Newby, and Poorman allotments are four of 23 grazing allotments on the Methow Valley Ranger District. The Congressional Rescission Act (Public Law 104-19, Section 504, U.S. Congress 1995) requires the Forest Service to identify all allotments on which a NEPA analysis is needed and to prepare and adhere to a schedule for conducting an assessment of grazing actions under NEPA. The Forest Service established a 15-year schedule for completion of this work. The AMPs for the Libby, Little Bridge, Newby, and Poorman allotments are to be updated to reflect current management direction and to address resource concerns on the allotments. Currently, there are active grazing permits on the selected four allotments that allow seasonal grazing. The Libby allotment has two grazing permits that allow a total of 167 cow/calf pairs to graze from May 16 to September 30. The Little Bridge allotment has two grazing permits that allow a total of 232 cow/calf pairs to graze from May 16 to September 15. The Newby allotment has one permit that allows 85 cow/calf pairs to graze from May 16 to September 15. The Poorman allotment has one permit that allows 44 cow/calf pairs to graze from May 16 to September 30. On the four allotments, over 26 miles of fence have been constructed in recent years to improve management. There have been a total of 53 water developments constructed to improve distribution. To control livestock access to sensitive stream segments or wetlands there have been two riparian exclosure fences constructed in the Newby allotment, one in the Little Bridge allotment, and one in the Libby allotment. Chapter 1—Introduction 1--1 LLBNP Allotment Management Plan Revision Draft Environmental Assessment Project Area Libby is a cattle and horse allotment that contains four grazing units and totals 23,971 acres. It is located within the Libby Creek subwatershed of the Lower Methow River watershed and the Alder Creek subwatershed of the Middle Methow River watershed (T32N, R20E, R21E, and R22E; T33N, R21E and R22E). Drainages within the allotment areas include Alder Creek and Libby Creek with all of its tributaries; Mission Creek, Ben Canyon, Chicamun Canyon, Smith Canyon, Hornet Draw, and Nickel Canyon. The Libby allotment boundaries are shown on the vicinity map, next page (Figure 1.1). Little Bridge is a cattle and horse allotment that contains five grazing units and totals 27,494 acres. It is located within the Little Bridge Creek subwatershed of the Twisp River watershed (T33N, R20E and R21E; T34N, R19E, R20E, and R21E). Drainages within the allotment include Lime Creek, Canyon Creek, Little Bridge Creek with all of its tributaries, Coal Creek, and Myer Creek. The Little Bridge allotment boundaries are shown on the vicinity map, next page (Figure 1.1). Newby is a cattle and horse allotment that contains four grazing units and totals 17,236 acres. It is located within the Buttermilk Creek and Newby Creek subwatershed of the Twisp River watershed (T32N, R20E and R21E; T33N, R20E and R21E). Drainages in the allotment include Buttermilk Creek and Newby Creek. The Newby allotment boundaries are shown on the vicinity map, next page (Figure 1.1). Poorman is a cattle and horse allotment that contains four grazing units and totals 6,745 acres. It is located within the Poorman Creek subwatershed of the Twisp River watershed (T33N, R21E). Drainages within the allotment include Poorman Creek and Blakely Canyon. The Poorman allotment boundaries are shown on the vicinity map, next page (Figure 1.1). Chapter 1—Introduction 1--2 LLBNP Allotment Management Plan Revision Draft Environmental Assessment Figure 1.1. Libby, Little Bridge, Newby, and Poorman allotments vicinity map. Chapter 1—Introduction 1--3 LLBNP Allotment Management Plan Revision Draft Environmental Assessment Management Direction and Guidance Management Direction - Regional and National Forest Plans Okanogan National Forest Land and Resource Management Plan This document and analysis tier to the Final Environmental Impact Statement (FEIS) for the Okanogan National Forest Land and Resource Management Plan, as amended (USDA Forest Service 1989a). Amendments include standards and guidelines described in the Record of Decision for Amendments to Forest Service Planning Documents within the Range of the Northern Spotted Owl (Northwest Forest Plan, USDA and USDI 1994) and the Record of Decision for the Final Environmental Impact Statement for the Pacific Northwest Region Invasive Plant Program Preventing and Managing Invasive Plants (USDA Forest Service 2005b). The Invasives Record of Decision includes standards and guidelines that require Allotment Management Plans to include the use of prevention standards. The Forest Plan includes designated Management Areas (MA). The goal of each MA within the Libby, Little Bridge, Newby, and Poorman allotments is described below. Further information about the desired future condition of each area, and standards and guidelines for each MA may be found in the Forest Plan. Management area locations are shown in Figure 1.2 and have the listed specific management emphases: • Management Area 5: Provide opportunities for recreation and viewing scenery in a roaded natural setting with a visual quality objective of retention or partial retention. • Management Area 14: Provide a diversity of wildlife habitat, including deer winter range, while growing and producing merchantable wood fiber. • Management Area 25: Intensively manage the timber and range resources using both even-aged and uneven-aged silvicultural practices. Manage to achieve a high present net value and a high level of timber and range outputs while protecting the basic productivity of the land and providing for the production of wildlife, recreation opportunities, and other resources. • Management Area 26: Manage deer winter range and fawning habitats to provide conditions which can sustain optimal numbers of deer indefinitely,
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