Wild Horse Geothermal Power Plant (UPE10-0058)


SCH Number
Lead Agency
Sonoma County
Document Title
Wild Horse Geothermal Power Plant (UPE10-0058)
Document Type
MND - Mitigated Negative Declaration
Present Land Use
A mix of geothermal power production and hunting / RRD (Resources and Rural Development), B6-320 acre density / Resources and Rural Development, 320 acre density.

Document Description
A Use Permit for an up to 49-megawatt geothermal power plant including an 18,000 s.f. turbine building, 53' high, a 21,000 s.f. cooling tower building with 5 cells, 50 feet high, a switch yard 120,000 s.f. in size, with a building inside the yard 800 s.f. in size and a 3-mile long transmission line. Construction of the transmission line (also referred to as the generation tie line) includes staging areas on existing drill pads or other previously disturbed areas. A 50 span 10 creeks and their associated forks. No transmission tower footings will be placed in creeks or their associated riparian zones. The transmission line will be hung by helicopter, no personnel or equipment will be in the creeks. Regular staffing at the power plant will consist of on-site, and/or, remote monitoring of the power plant by operations, backed up by roving stream field operators and maintenance specialists on an as needed basis. The proposed plant site was formerly the location of a 3-acre shop building for the Central CA Power Agency (CCPA).

Contact Information
Sigrid Swedenborg
Sonoma County Permit and Resource Management Department
2550 Ventura Avenue
Santa Rosa, CA 95403-2829

Phone : (707) 565-1914


Cross Streets
Cloverdale - Geysers Road
Total Acres
Parcel #
117-200-004, -013, 117-210-004, -008, 117-180-001, -011, -014
Squaw Creek
Other Location Info
City/Nearest Community: Geyserville

Notice of Completion

Review Period Start
Review Period End
Development Type
Power:Geothermal (49 Watts)
Local Action
Use Permit
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Biological Resources Geologic/Seismic Public Services Toxic/Hazardous
Reviewing Agencies
California Department of Conservation California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Energy Commission California Native American Heritage Commission California Public Utilities Commission California Regional Water Quality Control Board, North Coast Region 1 California State Lands Commission Department of Water Resources Office of Historic Preservation Resources Agency California Department of Transportation, District 4 Cal Fire

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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