Salton Sea Vertical Tube Evaporation Pilot Project

2 Documents in Project


SCH Number
Lead Agency
Salton Sea Authority
Document Title
Salton Sea Vertical Tube Evaporation Pilot Project
Document Type
NEG - Negative Declaration
Present Land Use
Cal Energy Geothermal Plant/S1G: Open Space/Recreation/Agriculture (Geothermal Overlay)

Document Description
The Salton Sea is excessively saline, affecting the ability of the Sea to sustain its biological resources. The Salton Sea Authority would conduct a 7-month pilot project to demonstrate the feasibility of reducing the salinity of the Sea water by using geothermal steam, rejected from power turbines at the Cal Energy plant, to drive the desalination process using vertical tube evaporation. The evaporator facility is a brine concentrator prototype designed, constructed, and tested on seawater for 1 year at the University of California and for 18 years in Modesto, California. In 2002, the evaporator facility was dismantled and moved to the U.S. Bureau of Reclamation's Salton Sea Navy Test Site, where it would be cleaned and repainted for this project. The equipment would be assembled on a 35-foot by 35-foot reinforced concrete pad at the CalEnergy Geothermal Plant, located at 6920 Lack Road, Calipatria, California. The heat energy from the steam is re-used about 15 times to generate 15-fold its weight in distilled water. Gypsum and brine are the other two products of this process. The distilled water would be mixed with untreated Salton Sea water and/or brine and discharged back into the Sea. The gypsum would be trucked to an authorized disposal facility. Brine would also be injected with the residual brine from CalEnergy's geothermal process back into the geothermal field using existing injection wells. Sodium sulfate would be removed from the brine to qualify the brine for injection by CalEnergy into the geothermal field. It is expected that the product would be sold to industry. The main objectives of this pilot project are to demonstrate the feasibility of the proposed multi-effect desalination process and to obtain needed test data with the pilot plant.

Contact Information
Dan Cain
Salton Sea Authority
Lead/Public Agency
78-401 Highway 111, Suite T
La Quinta, CA 92253

Phone : (760) 564-4888


Cross Streets
Lindsey Road and Lack Road
Total Acres
Parcel #
Salton Sea

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Vertical Tube Evaporation Desalination Plant)
Local Action
Pilot Project
Project Issues
Aesthetics Air Quality Cultural Resources Flood Plain/Flooding Geology/Soils Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Noise Public Services Solid Waste Transportation Wetland/Riparian Wildlife
Reviewing Agencies
California Department of Parks and Recreation California Department of Transportation, District 11 (DOT) California Energy Commission California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB) California State Lands Commission (SLC) Department of Fish and Wildlife, Region 6 Department of Water Resources Resources Agency State Water Resources Control Board, Division of Water Quality

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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