PUBLIC NOTICE
STATE OF ALASKA
DEPARTMENT OF ENVIRONMENTAL CONSERVATION

Hilcorp North Slope, LLC
Omega Pad

The Alaska Department of Environmental Conservation (ADEC) has made a preliminary decision to remand and reissue Hilcorp North Slope, LLC’s Air Quality Control Minor Permit No. AQ1854MSS01 for the Omega Pad.  

Applicant:     Hilcorp North Slope, LLC
                        3800 Centerpoint Drive, Suite 1400
                        Anchorage, AK 99503

Location:        Latitude: 70.352586 / Longitude: -149.360722, Prudhoe Bay, Alaska

Activity:          Hilcorp North Slope, LLC applied for a minor permit under 18 AAC 50.502(c)(1) for a new source that has the potential to emit greater than 40 tons per year (TPY) of oxides of nitrogen (NO_x), 40 TPY of sulfur dioxide (SO₂), 10 TPY of particulate matter less than or equal to a nominal 2.5 microns in diameter (PM_2.5), and 15 TPY of particulate matter less than or equal to a nominal 10 microns in diameter (PM₁₀). 18 AAC 50.502(c)(1) requires the Permittee to obtain a minor permit before beginning actual construction of a new stationary source with a potential to emit greater than the thresholds listed under 18 AAC 50.502(c)(1). Minor Permit No. AQ1854MSS01 was issued on November 1, 2024. In accordance with 18 AAC 15.185, Hilcorp North Slope, LLC submitted an informal review request contesting Condition 3 of Minor Permit No. AQ1854MSS01. On November 27, 2024, the Department granted the informal review and remanded the issued permit under 18 AAC 15.185(d)(2) for further consideration.

Emissions:      The potential annual emissions of regulated air pollutants at the stationary source will not exceed: 212.25 tons of NO_x, 216.48 tons of CO, 15.63 tons of PM, 84.00 tons of SO₂, 14.11 tons of volatile organic compounds (VOCs), 243,732.84 tons of carbon dioxide equivalent emissions (CO₂e), and 3.89 tons of hazardous air pollutants (HAPs), with highest individual HAP (n-Hexane) estimated at 3.59 tons. The total annual potential emissions of regulated air pollutants, other than greenhouse gases, are 542.47 tons.

ADEC Preliminary Review: Based on review of the contested decision, the information provided in Hilcorp North Slope, LLC’s informal review request, the relevant background information, and the permit records for Minor Permit No. AQ1854MSS01, ADEC drafted a preliminary permit decision for this project under AS 46.14 and 18 AAC 50.

Available Information: Copies of the permit application(s), ADEC’s preliminary minor permit and technical analysis report (TAR) are available at the following offices:

ADEC Air Permits Program, 410 Willoughby Avenue, Suite 303, Juneau, Alaska 99801

ADEC Air Permits Program, 555 Cordova Street, 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 preliminary decision within 30 days after the first publication date. 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.

ADEC complies with Title II of the Americans with Disabilities Act (ADA) 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 MacPherson at megan.macpherson@alaska.gov, 1-907-269-3096; Alaska Relay Service/TTY/TDD 1-800-770-8973; or dial 711 by the 15^th day of this public comment period to ensure that any necessary accommodations can be provided.

Comments relevant to the preliminary minor permit may be submitted electronically via ADEC’s public notice site at https://dec.alaska.gov/Applications/Air/airtoolsweb/FormalComments, or to Joshua Klina by mail to PO Box 111800, Juneau, AK 99811, or by email to joshua.klina@alaska.gov and dec.air.comment@alaska.gov.  Comments must be received by close of public comments period at 11:59 p.m. Alaska time on July 14, 2025. Except for comments classified under AS 46.14.520, all public comments submitted during the public comment period can be viewed at https://dec.alaska.gov/Applications/Air/airtoolsweb/AirPermitsApprovalsAndPublicNotices  after the public comment period.