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Southwest Intertie Project - South

Western is considering whether to provide partial financing in the amount of $354 million for the southern portion of the Southwest Intertie Project. SWIP-South consists of approximately 235 miles of 500-kV transmission line and would extend from Harry Allen Substation near Las Vegas, Nev., northward to the proposed Thirtymile Substation near Ely, Nev. Western is considering partial financing of the project under provisions of our Transmission Infrastructure Program, which was created to implement section 406 of the American Recovery and Reinvestment Act of 2009.

The Department of the Interior, Bureau of Land Management, was the lead agency in the preparation of the Southwest Intertie Project Final Environmental Impact Statement and Proposed Plan Amendment (July 1993). BLM also prepared the Southwest Intertie Project Southern Portion Environmental Assessment (July 2008). Western is proposing to adopt the BLM's previous EIS and EA to meet its obligations under the National Enviromental Policy Act. The BLM's EIS and EA and Western's cover sheet together serve as Western's EIS NEPA documentation for the proposed SWOP-South financing.

Western documents

Cover sheet adopting BLM's enviromental documentation (1.2 MB pdf)
Notification letter to interested parties (389 kb pdf)

Bureau of Land Management documents

Southwest Intertie Project Construction, Operation and Maintenance Plan (August 2008)

Table of Contents and Acronyms (1.1 MB pdf)
Section 1 - Introduction (3.8 MB pdf)
Section 2 - Project Management (61 kb pdf)
Section 3 - Project Components (1.9 MB pdf)
Section 4 - Project Construction (225 kb pdf)
Section 5 - Maintenance and Operation of Project (62 kb pdf)
Section 6 - Mitigation of Environmental Concerns (636 kb pdf)
Appendices Index (39 kb pdf)
Appendix A - Construction Considerations (1.1 MB pdf)
Appendix B - Biological Considerations (3.7 MB pdf)
Appendix B2 - Biological Protection Plan (7.7 MB pdf)
Appendix B3 - Noxious Weed Management Plan (252 kb pdf)
Appendix C - Cultural and Paleontological Considerations (4.1 MB pdf)
Appendix D - Other Special Resource Considerations and Mitigation Measures (81 kb pdf)
Appendix E - Stormwater Pollution and Prevention Plan Methodology (64 kb pdf)
Appendix F - Right-of-Way Preparation, Rehabilitation and Restoration (6.9 MB pdf)

Southwest Intertie Project Southern Portion Environmental Assessment (July 2008)

Table of Contents and Section 1 - Introduction and Purpose and Need (70 kb pdf)
Section 2 - Proposed Action and Alternatives (6.8 MB pdf)
Section 3 - Affected Environment for the extension of the right of way to the Harry Allen Substation and for the Thirtymile Substation (70 kb pdf)
Section 4 - Environmental Consequences for the extension of the right of way to the Harry Allen Substation and for the Thirtymile Substation (55 kb pdf)
Section 5 - Legislative Modifications for Coyote Springs Realignment (77 kb pdf)
Section 6 - Policy and Resource Updates (50 kb pdf)
Section 7 - Cumulative Impacts Assessment (5.1 MB pdf)
Section 8 - List of Preparers and Contributors (35 kb pdf)
Appendix A - Mitigation (36 kb pdf)
Appendix B - Biological Opinion (3.6 MB pdf)
Finding of No Significant Impact (1.1 MB pdf)
Decision Record (628 kb pdf)

Southwest Intertie Project Final Environmental Impact Statemetn and Proposed Plan Amendment (July 1993)

Summary (5.1 MB pdf)
Table of Contents (1.5 MB pdf)
Chapter 1 - Proposed Plan (11.8 MB pdf)
Chapter 2 - Public Participation (902 kb pdf)
Chapter 3 - Modifications and Additional Studies (Part 1) (12.2 MB pdf)
Chapter 3 - Modifications and Additional Studies (Part 2) (12.6 MB pdf)
Chapter 3 - Modifications and Additional Studies (Part 3) (11.9 MB pdf)
Chapter 4 - Errata (9.3 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Index of Commentors (1.0 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Individuals (Part 1) (9.1 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Individuals (Part 2) (6.4 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Individuals (Part 3) (4.0 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Individuals (Part 4) (4.8 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Organizations (Part 1) (6.9 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Organizations (Part 2) (7.6 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters and Responses from Agencies (10.4 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Comment Letters Received After the Comment Period (2.6 MB pdf)
Chapter 5 - Comments and Responses to the DEIS/DPA - Formal Public Meeting Comments and Responses (2.6 MB pdf)
References (1.4 MB pdf)
Appendix A - Appendicies Index and Glossary, Acronyms & Abbreviations (2.7 MB pdf)
Appendix B - List of Agencies, Organizations and Individuals Receiving the FEIS/PPA (2.4 MB pdf)
Appendix C - Biological Opinion (7.3 MB pdf)
Appendix D - Committed Mitigation for the Proposed Action (10.2 MB pdf)
Appendix E - Data Tables Sacramento Pass Mitigation Reroute (7.6 MB pdf)
Record of Decision and Approved Land Use Plan Amendment (1.0 MB pdf)

Southwest Intertie Project Draft Environmental Impact Statement and Draft Plan Amendment (June 1992)

Summary (4.9 MB pdf)
Table of Contents (1.9 MB pdf)
Chapter 1 - Purpose and Need for Action (5.0 MB pdf)
Chapter 2 - Alternatives Including the Proposed Action (Part 1) (9.6 MB pdf)
Chapter 2 - Alternatives Including the Proposed Action (Part 2) (9.3 MB pdf)
Chapter 3 - Affected Environment (Part 1) (10.1 MB pdf)
Chapter 3 - Affected Environment (Part 2) (8.6 MB pdf)
Chapter 3 - Affected Environment (Part 3) (8.2 MB pdf)
Chapter 4 - Environmental Consequences (Part 1) (9.8 MB pdf)
Chapter 4 - Environmental Consequences (Part 2) (8.4 MB pdf)
Chapter 4 - Environmental Consequences (Part 3) (7.9 MB pdf)
Chapter 5 - Consultation and Coordination (3.7 MB pdf)
Chapter 6 - Preparers and Contributors (3.5 MB pdf)