Notice of Application for State Air Quality Permit AQ0186TVP04 Hilcorp North Slope LLC, Central Power Station

The Alaska Department of Environmental Conservation (ADEC) proposes to issue Air Quality Control Operating Permit No. AQ0186TVP04 for the Central Power Station under Alaska Statutes 46.14 and regulation 18 AAC 50. Applicant: Hilcorp North Slope, LLC 3800 Centerpoint Dr., Suite 1400 Anchorage, AK 99503 Location: Latitude: 70o 16 ́ 34" North; Longitude: 148o 39 ́ 43" West Activity: The Central Power Station produces all the electric power for the Prudhoe Bay Unit (PBU) oil producing facilities. Application: As required by 18 AAC 50, Hilcorp North Slope, LLC applied for a renewal operating permit for the Central Power Station. ADEC received the application on August 9, 2021. This public notice is for the draft operating permit only. Emissions: The potential annual emissions of regulated air contaminants at the facility are: 76 tons of particulate matter (PM-10), 4,301 tons of nitrogen oxides (NOX), 279 tons of sulfur dioxide (SO2), 937 tons of carbon monoxide (CO), 24 tons of volatile

organic compounds (VOC), 1,336,524 tons of carbon dioxide equivalent emissions, and 18.6 tons of hazardous air pollutants (HAP). The total potential emissions of regulated air contaminants, other than greenhouse gases, is 5,617 tons per year. Preliminary Review: Based on review of the application, ADEC has drafted a preliminary permit decision for the Central Power Station. Available Information: Copies of the permit application, ADEC’s draft operating permit, and statement of basis are available at ADEC’s Anchorage office, 555 Cordova St., Anchorage, AK 99501. These documents are also available at ADEC’s website at: http://dec.alaska.gov/Applications/Air/airtoolsweb/AirPermitsApprovalsAndPublicNotices/ . Opportunity for Public Participation: Any interested person may present written statements relevant to the draft documents, as long as they are received by the close of the public comment period. ADEC will consider all comments received and make any changes ADEC finds beneficial or necessary to assure compliance with 18 AAC 50 or state law. ADEC will issue a final decision to issue or deny the permit after the close of the public comment period. Any person may request a public hearing and that hearing will be held if ADEC finds that good cause exists. ADEC complies with Title II of the Americans with Disabilities Act of 1990. If you are a person with a disability who may need a special accommodation in order to participate in this public process, please contact Megan Kohler at (907) 269-4198 or TDD Relay Service 1-800-770-8973/TTY or dial 711 by the 15th day of this public comment period to ensure that any necessary accommodations can be provided. Comments relevant to the draft operating permit may be submitted electronically via ADEC’s public notice site at https://aq.alaskadec.commentinput.com?id=MQ7EdJrhx2 or to Scott Faber by mail to 555 Cordova St., Anchorage, AK 99501 or by email to scott.faber@alaska.gov. Comments must be received by close of public comments period at 11:59 p.m. Alaska time on April 8, 2024.