SWAMP EDDY Agriculture
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United States Department of SWAMP EDDY Agriculture Forest Service Environmental Assessment August 2019 Plains/Thompson Falls Ranger District, Lolo National Forest Sanders County, Montana For More Information Contact: Project Leader Pat Partyka ([email protected]) Plains/Thompson Falls District Ranger Erin Carey ([email protected]) Plains/Thompson Falls Ranger District P.O. Box 429 Plains, MT 59859 Telephone: 406-826-3821 Fax: 406-826-4358 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. 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Swamp Eddy Environmental Assessment Contents CHAPTER 1: PURPOSE AND NEED FOR ACTION .......................................................................... 1 1.1 Introduction ................................................................................................................................... 1 1.2 Background and Setting ................................................................................................................ 1 1.3 Purpose and Need for Action ........................................................................................................ 1 1.4 Original Proposed Action .............................................................................................................. 5 1.4.1 Design Criteria ........................................................................................................................ 5 1.5 Public Involvement ........................................................................................................................ 6 1.5.1 Issue Resolution ...................................................................................................................... 7 CHAPTER 2: ALTERNATIVES .......................................................................................................... 11 2.1 Alternatives ................................................................................................................................. 11 2.1.1 Resource Protection Measures .............................................................................................. 20 2.1.2 Monitoring ............................................................................................................................ 26 2.2 Alternatives Considered but Eliminated from Detailed Study .................................................... 26 CHAPTER 3: ENVIRONMENTAL EFFECTS .................................................................................... 29 3.1 Past, Present, and Reasonably Foreseeable Future Actions ........................................................ 29 3.2 Vegetation ................................................................................................................................... 32 3.2.1 Resilient Vegetative Conditions ........................................................................................... 32 3.2.2 Weeds ................................................................................................................................... 36 3.3 Soils ............................................................................................................................................. 38 3.4 Aquatics ....................................................................................................................................... 42 3.5 Wildlife ........................................................................................................................................ 49 3.6 Transportation System ................................................................................................................. 79 3.7 Economics ................................................................................................................................... 81 3.8 Roadless ...................................................................................................................................... 84 References.............................................................................................................................................. 87 Appendix A: Maps Appendix B: Detailed Vegetation and Road Treatments Appendix C: Science Basis for Restoration Treatments i Swamp Eddy Environmental Assessment ii Swamp Eddy Environmental Assessment CHAPTER 1: PURPOSE AND NEED FOR ACTION 1.1 Introduction The Lolo National Forest is proposing to improve the health and resiliency of forest vegetation, support the economic vitality of local rural communities, maintain a suitable transportation system, and improve resource conditions and public safety at a dispersed recreation site in the Swamp and Combest Creek drainages, which are tributary to the Clark Fork River. This Environmental Assessment (EA) discloses the direct, indirect, and cumulative effects of the proposal to determine whether it may significantly affect the quality of the human environment and thereby require preparation of an environmental impact statement. Preparation of this EA fulfills agency policy and direction to comply with the National Environmental Policy Act (NEPA), the Lolo National Forest Plan, 40 CFR 1508.9, 36 CFR 220.7, and other relevant federal and State laws and regulations. The reports cited in this EA and additional project documentation are contained within the project file located at the Plains/Thompson Falls Ranger District office in Plains, Montana. These documents are available upon request. 1.2 Background and Setting The 28,000-acre project area is located about 5 miles southwest of Plains, Montana (see map in Appendix A). The area is primarily allocated to timber management and big game winter range forage production (Management Areas 16, 18, 23, 25) in the Lolo Forest Plan1. Since March 2016 when the proposed action was initially presented to the public, approximately 55 percent of the project area burned in the 2017 Sheep Gap Fire. Salvage of fire-killed trees on approximately 10 percent of the National Forest System (NFS) land within the burned area is ongoing to recover the economic value of forest products to contribute to employment and income in local communities. Due to the overall high severity of the fire, the need to conduct vegetation treatments to achieve forest health and resiliency objectives no longer exists currently within the fire perimeter. However, these vegetation needs remain for the unburned lands located within the project area (see section 1.3 below). As described below, providing continued support for the economic structure of local communities is still an important objective of the Swamp Eddy project. Although some road needs were addressed during post-fire rehabilitation activities and as part of the salvage effort, additional actions are desired to achieve management objectives to maintain a suitable transportation system within the entire project area (both inside and outside the fire perimeter). 1.3 Purpose and Need for Action The purposes of the Swamp Eddy project are to: 1 The Forest Plan guides all natural resource management activities and establishes management standards for the Lolo National Forest. It described resource management practices, levels of resource production and management, and the availability and suitability of lands for resource management. 1 Swamp Eddy Environmental Assessment Restore vegetation conditions that are resilient to natural disturbances such as fires, insects, disease, drought, and other environmental shifts so ecological processes will sustain composition, structure, species, and genetic diversity in the future. o Re-establish a mosaic of tree age, species, and size classes across the landscape in varying patch sizes o Promote ponderosa pine, western larch, and western white pine o Reduce forest fuels Provide wood products that contribute