Water Sources & Riparian Enhancement Programmatic
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U.S. Department of the Interior Bureau of Land Management Environmental Assessment DOI-BLM-CA050-2016-04-EA 2016 Water Sources & Riparian Enhancement Programmatic Environmental Assessment Applegate Field Office 708 West 12th Street Alturas, CA 96101 Eagle Lake Field Office 2550 Riverside Drive Susanville, CA 96130 U.S. Department of the Interior Bureau of Land Management Phone: (530) 233-4666 Table of Contents Table of Contents 1.0 Introduction ........................................................................................................................... 2-3 1.1 Introduction/Background .......................................................................................................... 2-3 1.2 Proposed Action Location ......................................................................................................... 2-4 1.3 Programmatic EA Approach ..................................................................................................... 2-7 1.4 Purpose and Need ...................................................................................................................... 2-7 1.5 Land Use Plan Conformance ..................................................................................................... 2-8 1.6 Permits and Approvals Required ............................................................................................... 2-8 1.7 Decision to be Made .................................................................................................................. 2-8 1.8 Scoping and Public Involvement ............................................................................................... 2-9 1.8.1 History of the Planning and Scoping Process ...................................................................................... 2-9 1.9 Summary of Comments ............................................................................................................. 2-9 1.10 Issues ......................................................................................................................................... 2-9 1.11 Resources Evaluated ............................................................................................................... 2-10 2.0 Description of proposed action and alternatives ........................................................ 2-12 2.1 Alternative 1: Proposed Action ............................................................................................... 2-12 2.1.1 Water Source Enhancement Projects ................................................................................................. 2-13 Modification to Existing Structures and Removal and Rehabilitation of Non-Functioning Structures ........... 2-13 Installation of New Water Developments ........................................................................................................ 2-14 2.1.2 Riparian Enhancement Projects ......................................................................................................... 2-16 Riparian Vegetation Projects ........................................................................................................................... 2-16 Stream Enhancement Projects ......................................................................................................................... 2-19 Riparian Fence Projects ................................................................................................................................... 2-21 Road Removal/Realignment ............................................................................................................................ 2-23 2.1.3 Project Design Features and Processes .............................................................................................. 2-24 2.1.4 Project Implementation Monitoring ................................................................................................... 2-29 2.2 Alternative 2: No Action ......................................................................................................... 2-29 2.3 Alternatives Considered but Dismissed from Detailed Analysis ............................................ 2-29 3.0 AFFECTED ENVIRONMENT and Environmental IMPACTS ................................ 3-31 3.1 Assumptions ............................................................................................................................ 3-31 3.2 General Description................................................................................................................. 3-32 3.3 Environmental Impacts ........................................................................................................... 3-32 Direct and Indirect Effects ............................................................................................................................... 3-32 Cumulative Effects .......................................................................................................................................... 3-32 3.4 Past, Present, and Reasonably Foreseeable Future Actions .................................................... 3-32 3.5 Impacts from the Programmatic Approach ............................................................................. 3-34 3.6 Affected Resources ................................................................................................................. 3-34 3.6.1 Cultural Resources ............................................................................................................................. 3-34 3.6.2 Livestock Grazing & Socioeconomics ............................................................................................... 3-40 3.6.3 Soils ................................................................................................................................................... 3-46 Bureau of Land Management, Applegate and Eagle Lake Field Office Water Sources and Riparian Enhancement Programmatic Environmental Assessment 3.6.4 Vegetation .......................................................................................................................................... 3-50 3.6.5 Riparian Wetlands and Riparian Areas, including Surface Water Quality ........................................ 3-56 3.6.6 Wildlife/Fisheries/Migratory Birds .................................................................................................... 3-61 4.0 CONSULTATION and COORDINATION ............................................................... 4-82 Persons, Groups and Agencies Consulted ............................................................................................ 4-82 4.2 List of Preparers ............................................................................................................................. 4-82 Appendix A- Literature Cited .................................................................................................... 4-83 Appendix B- Glossary................................................................................................................ 4-90 Appendix C- Example Determination of National environmental polocy act Adequacy, Pre- Project Clearances and Draft Decision Record .......................................................................... 4-94 Appendix- Habitat Objectives (Table 2-2 from the Greater Sage-Grouse Approved Resource Management Amendment [ARMPA]) ..................................................................................... 4-102 2-2 1.0 INTRODUCTION 1.1 Introduction/Background This Programmatic Environmental Assessment (EA) discloses and analyzes the potential environmental impacts of protecting and enhancing water sources and riparian habitats that include wet meadows and springs found on lands managed by the Bureau of Land Management (BLM), Applegate Field Office (AGFO) and Eagle Lake Field Office (ELFO). The BLM is required by Congress to manage public land under a Multiple-Use mandate. This means that the BLM must manage for livestock grazing, wildlife habitat, recreation, mining, renewable energy development, cultural resources, and free roaming wild horses and burros (WH&B). These uses often conflict with one another. Protecting and enhancing water sources and riparian habitats from potential degradation is the main objective of this EA. Water Sources Water sources in the project area include both lentic and lotic ecosystems. Lentic resources pertain to standing water such as lakes, reservoirs, seeps, springs, and ponds. Lotic ecosystems are defined as moving water such as creeks, streams, brooks, and rivers. These water sources are found throughout the two field offices and are utilized by wildlife, livestock and free roaming horses and burros. Some of these water source sites have been developed to increase efficiency and prevent degradation to the source. For example, a developed water source could be a site where water is piped from a natural spring to a trough. The majority of these developments have been in place for 10+ years and need to be improved and/or maintained in order to keep producing water or to improve site conditions. The remaining water sources have not been developed or protected, and with the current dry conditions across the landscape are in need of enhancement and protection. Riparian Habitats Riparian habitat exhibits vegetation or physical characteristics that reflect the influence of permanent surface or subsurface water. Typical riparian habitat includes lands along, adjacent