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  2. NPDES Permits Around the Nation

CA0000018: Vessel Testing a Pilot OceanWell off the Coast of California in Federal Waters

Return to: NPDES Permits in California

NPDES Permit No. CA0000018 for Vessel Testing a Pilot OceanWell located off the coast of California in federal waters. The permit authorizes freshwater and brine intermittent discharges from a desalination module into the Pacific Ocean.

Permittee Name: Mark Golay
Permittee Address: 1300 El Camino Real, Suite 100, Menlo Park, CA 94025
Facility Name: Vessel Testing a Pilot OceanWell
Facility Location: Six test sites in federal waters off the California coast.
Facility Rating: Minor
This permit was issued on: Date of signature below
This permit shall become effective on: September 1, 2025
Permit reapplication due no later than: March 4, 2030
This permit shall expire at midnight on: August 31, 2030

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  • NPDES Permit No. CA0000018: Vessel Testing a Pilot OceanWell off the Coast of California (pdf) (511.99 KB, August 12, 2025)
    National Pollutant Discharge Elimination System (NPDES) Permit No. CA0000018 and Clean Water Act Section 401 Water Quality Certification for Vessel Testing a Pilot OceanWell under U.S. EPA NPDES Permit No. CA0000018.
  • NPDES Permit Fact Sheet: Vessel Testing a Pilot OceanWell off the Coast of California (pdf) (367.69 KB, August 2025)
    EPA Fact Sheet for National Pollutant Discharge Elimination System (NPDES) Permit No. CA0000018 for Vessel Testing a Pilot OceanWell off the Coast of California.
Contact Us About NPDES Permits Around the Nation to ask a question, provide feedback, or report a problem.
Last updated on August 21, 2025
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