Conditional Use Permit No. 2007-03/Coso Operating Company LLC (Coso Hay Ranch Water Extraction, Export, and Delivery System)

6 Documents in Project


SCH Number
Lead Agency
Inyo County
Document Title
Conditional Use Permit No. 2007-03/Coso Operating Company LLC (Coso Hay Ranch Water Extraction, Export, and Delivery System)
Document Type
NOP - Notice of Preparation
Present Land Use
Rural Protection (RP), 1 dwelling unit per 40 acres, 40-acre minimum parcel size (5.36 acres - private lands); State and Federal Lands (SFL) (32.24 acres - Bureau of Land Management); and, State and Federal lands (SFL) (16.18 acres - China Lake Naval Air Weapons Station) Z: Open Space, 40-acre minimum parcel size (OS-40)

Document Description
The proposed project includes pumping of water from Coso Hay Ranch in Rose Valley to provide fluid to the geothermal field in the China Lake Naval Air Weapons Center. Water will be withdrawn from two existing wells at the Coso Hay Ranch property at an average rate of 3,000 gallons per minute (gpm), or approximately 4,800 acre-feet per year (each well will have a down-hole shaft-driven pump with a capacity of 2,000 gpm, and will be pumped for 18 hours per day). Power for the proposed project is proposed to be supplied by a new 3 mega watt (MW) substation to be constructed by Southern California Edison (SCE) adjacent to the pumping equipment on the Hay Ranch property (the existing dilapidated mobile home and equipment shed will be removed). There will also be prefabricated 16' x 10' mechanical-electrical equipment building constructed near the pumping equipment. The substation will have security lighting of a low intensity and low sodium type, which will be photo sensor controlled. Maintenance lighting will have high pressure sodium lights controlled by a manual switch which is left in the "off" position except for emergency night maintenance or operations. Landscaping and an automatic irrigation system around the substation will be installed by a certified licensed landscape architect and will be designed to filter views from nearby residences and commercial areas. An 8-foot high chain link/barbed wire fence will enclose the facility.

Contact Information
Jan Larsen
Inyo County Planning Department
Lead/Public Agency
P.O. Office Drawer L
Independence, CA 93526

Phone : (760) 878-0263


Cross Streets
Coso Hay Ranch

Notice of Completion

Review Period Start
Review Period End
Local Action
Project Issues
Aesthetics Biological Resources Cultural Resources Geology/Soils Hydrology/Water Quality
Reviewing Agencies
Air Resources Board, Major Industrial Projects California Department of Conservation (DOC) California Department of Parks and Recreation California Department of Transportation, District 9 (DOT) California Energy Commission California Regional Water Quality Control Board, Lahontan Victorville Region 6 (RWQCB) Department of Toxic Substances Control Department of Water Resources Office of Historic Preservation Resources Agency California Native American Heritage Commission (NAHC) California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW)

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 or via phone at (916) 445-0613.

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