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NPDES Permit for Hilcorp Alaska Liberty Drilling and Production Island

Below are EPA's National Pollutant Discharge Elimination System (NPDES) final permit and supporting documents for the Hilcorp Alaska, LLC Liberty Drilling and Production Island in federal waters of the outer continental shelf (Stefansson Sound in the Beaufort Sea).

  • Permit number: AK0053085
  • Effective date: December 31, 2018
  • Permit expires: December 30, 2023

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