United States Department of the Interior Bureau of Land Management Long Valley Road Extension Right-of-Way Environmental Assessment DOI-BLM-UT-C030-2020-0004-EA September 2020 Location: Section 31, Township 42 South, Range 14 West Section 6, Township 43 South, Range 14 West Section 36, Township 42 South, Range 15 West Salt Lake Baseline and Meridian Applicant: Washington City 1305 East Washington Dam Road Washington, Utah 84780 St. George Field Office 345 East Riverside Drive St. George, Utah 84790 435-688-3200 435-688-3252 fax TABLE OF CONTENTS Chapter 1. Purpose and Need ........................................................................................................................ 1 1.1 Introduction ................................................................................................................................... 1 1.2 Background ................................................................................................................................... 1 1.3 Purpose and Need for Action ........................................................................................................ 1 1.4 Decision to be Made ..................................................................................................................... 2 1.5 Conformance with BLM Land Use Plan ....................................................................................... 2 1.6 Scoping and Public Involvement and Issues ................................................................................. 4 1.6.1 Introduction ........................................................................................................................... 4 1.6.2 Issues Identified .................................................................................................................... 4 1.6.3 Issues Considered but Eliminated from Further Analysis ..................................................... 5 Chapter 2. Description of Proposed Action and Alternatives ....................................................................... 6 2.1 Introduction ................................................................................................................................... 6 2.2 Proposed Action ............................................................................................................................ 6 2.2.1 Applicant-Committed Measures ........................................................................................... 9 2.3 No Action Alternative ................................................................................................................. 16 2.4 Alternatives Considered but not Analyzed in Detail ................................................................... 16 Chapter 3. Affected Environment ............................................................................................................... 17 3.1 Introduction ................................................................................................................................. 17 3.2 Affected Environment ................................................................................................................. 18 3.2.1 Would Project Implementation (Construction and Maintenance Activities) Affect Wildlife (Excluding USFWS Designated Species) Habitat and Result in Loss of Animals? ........... 18 3.2.2 Would Project Implementation (Construction and Maintenance Activities) Affect Migratory Bird Species Habitat and Result in Loss of Birds? ............................................ 18 3.2.3 Would Project Implementation (Construction and Maintenance Activities) Result in Vegetation (Excluding USFWS Designated Species) Habitat Loss? .................................. 18 3.2.4 Would Project Implementation (Construction and Maintenance Activities) Result in the Loss of the Listed Endangered Dwarf Bear-Poppy and Holmgren Milkvetch and the Listed Threatened Siler Pincushion Cactus Habitat or Individual Plants? ..................................... 19 3.2.5 Would Project Implementation (Construction and Maintenance Activities) Result in the Loss of the Listed Threatened Desert Tortoises or Their Habitat? ..................................... 22 3.2.6 Would Project Implementation (Construction and Maintenance Activities) Result in the Loss of Warner Ridge/Fort Pearce ACEC Values? ............................................................ 24 Chapter 4. Environmental Effects ............................................................................................................... 26 4.1 Introduction ................................................................................................................................. 26 4.2 Anticipated Environmental Effects ............................................................................................. 26 4.2.1 Proposed Action .................................................................................................................. 26 4.2.2 No Action Alternative ......................................................................................................... 29 4.3 Cumulative Impact Analysis ....................................................................................................... 29 4.3.1 Past and Present Actions ..................................................................................................... 29 4.3.2 Reasonably Foreseeable Future Actions ............................................................................. 29 4.3.3 Cumulative Effects .............................................................................................................. 30 Chapter 5. Consultation and Coordination .................................................................................................. 31 5.1 Introduction ................................................................................................................................. 31 Long Valley Road Extension Right-of-Way Draft Environmental Assessment Transcon Environmental, Inc. page i 5.2 Tribes, Individuals, Organizations, or Agencies Consulted ........................................................ 31 5.3 Public Participation ..................................................................................................................... 31 5.4 List of Preparers .......................................................................................................................... 31 5.4.1 BLM Preparers .................................................................................................................... 31 5.4.2 Non-BLM Preparers ............................................................................................................ 31 References ................................................................................................................................................... 32 List of Figures Figure 1 Project area overview map .................................................................................................. 8 Figure 2 Occupied and unoccupied dwarf bear-poppy habitat located within the project area ...... 12 Figure 3 Fences overview map ........................................................................................................ 15 Figure 4 Plant area overview map ................................................................................................... 21 Figure 5 Federally-listed species map ............................................................................................. 23 Figure 6 ACEC overview map ........................................................................................................ 25 List of Tables Table 1 Tribes, Individuals, Organizations, and Agencies Consulted ........................................... 31 Table 2 Non-BLM Preparers ......................................................................................................... 31 List of Appendices Appendix A BLM ID Checklist Appendix B Project Construction Plans Appendix C USFWS Consultation Appendix D Photographs of the Project Area Long Valley Road Extension Right-of-Way Draft Environmental Assessment Transcon Environmental, Inc. page ii CHAPTER 1. PURPOSE AND NEED 1.1 Introduction The proposed Long Valley Road extension is part of a Washington City master planned roadway that would connect the existing Long Valley Road with a planned interchange on the Southern Parkway known as Interchange 11 (3650 South). The proposed road would lie adjacent to the recently completed parkway (Figure 1). The extension would provide a principal access to the planned Trails at Long Valley master community as well as traffic circulation and utility access to approximately 2,000 residential units located within the subdivision. The proposed road would provide additional traffic circulation and emergency access to the area prior to the completion of the interchange, which is currently under discussion to be constructed. Additionally, public utilities (culinary water, sewer, natural gas, television, and telephone lines) would be located underneath the proposed roadway (James Raines personal communication 2020). A paved bicycle trail would eventually be constructed adjacent to the road within the proposed right-of-way (ROW). Because the trail is being analyzed as a part of the proposed project, no additional environmental assessment work would be required. The proposed project would be located on Bureau of Land Management (BLM)-administered land and