The Mobius Arch in the Alabama Hills -- This rock arch perfectly frames Mount Whitney in the center opening.
Eastern Sierra Mountains Rock Climbing Strutting Sagegrouse Alabama Hills Cactus in Bloom
BLM>California>Bishop>Casa Diablo Geothermal Energy Project
Print Page
Field Office

Casa Diablo IV Geothermal Energy Project (CACA 54722)

The following diagram shows the current progress for this proposed project with links to applicable project-related documents. The colored bar in the center indicates the items that have been completed or are currently underway.

    Federal Coordination Process

Record of Decision -





Notice of Availability Final EIS

  Publication of Final EIS -





- Public Comment Period       

Notice of Availability of Draft EIS -



  - Publication of Draft EIS

Notice of Intent -



Project Vitals 

Proposed Location: Near the town of Mammoth Lakes in Mono County, California.  The project would be located on Inyo National Forest lands and adjacent private lands within portions of Federal geothermal leases CACA-11667, CACA-14407, CACA-14408 and CACA-11672. 

Electricity Production Capacity: 33 net megawatts 

Company: ORNI 50 LLC (wholly owned subsidiary of Ormat Nevada Inc.)  

Acreage: Approximately 77 acres of temporary ground disturbance and 18 acres of new permanent impervious surface disturbance.

Status: The project was approved August 12, 2013.

Public Comment: There are no longer any opportunities to comment on the project.

Company's Expected Benefit:  The project would generate enough electricity to serve 10,000 homes or 33,000 people.

Public Comments

One oral comment and 28 comment letters were received on the Draft EIS and 9 comment letters, from 6 separate entities, were received on the Final EIS.  All comments received on the Draft EIS were considered and incorporated into the Final EIS.  Comments received during the 30 day wait period for the Final EIS were reviewed and considered, but did not identify significant new circumstances or information.

Public Meetings & Hearings 

 There are no public meetings or hearings scheduled at this time.

For more information:  Contact Collin Reinhardt at (760) 872-5024.

Project Email Address:

Photo of Existing Geothermal Facility near 
Mammoth Lakes, CA

Volume 1 - Final EIS - 
Executive Summary & Chapters 1-10
Volume 2 - Appendices A - F
Volume 2 - Appendices G- H
Volume 2 - Attachment G1 Part 1 (Associated Exhibit Comment Letters to Letter I9)
Volume 2 - Attachment G1 Part 2 (Associated Exhibit Comment Letters to Letter I9)
Volume 2 - Supplement to Attachment G1 Part 2 (Associated Exhibit Comments to Letter I9)
Volume 2 - Attachment G1 Part 3 (Associated Exhibit Comments to Letter I14)
Volume 2 - Attachment G2 (Economic Benefits 2012)

ROD - 8/13/2013
Appendix 1 - Maps
Appendix 2 - Mitigation,  Monitoring and Reporting Program
Appendix 3 - Memorandum of Aggrement
Appendix 4 - USFW Concurrence Letter
Appendix 5 - Appeal Form

Bureau of Land Management
Bishop Field Office
351 Pacu Lane, Suite 100
Bishop, CA 93514
Phone: (760) 872-5000
Fax: (760) 872-5050
Office Hours: 8:00 a.m. - 4:30 p.m., M-F
Contact us by Email