PUBLIC NOTICE
STATE OF ALASKA
DEPARTMENT OF ENVIRONMENTAL CONSERVATION

Hilcorp Alaska, LLC
Diamond Pad

The Alaska Department of Environmental Conservation (ADEC) proposes to issue an Owner Requested Limit approval (ORL) AQ1951ORL01 to Hilcorp Alaska, LLC for the Diamond Pad under Alaska Statute 46.14 and regulation 18 AAC 50.

Applicant:      Hilcorp Alaska, LLC, 3800 Centerpoint Dr., Suite 1400, Anchorage, AK 99503

Location:        West Side of the Cook Inlet

Activity:          Installing an additional gas-fired compressor with a three-way catalyst to avoid the need for a Minor Permit. This public notice is for the draft ORL only.

Emissions: The change in emissions at the stationary source will not exceed 40 tons per year of NO_X potential emissions increases by operating the new EU ID 16 with a three-way catalyst, thereby staying below the minor permitting threshold under 18 AAC 50.502(c)(4). The other regulated pollutants (PM₁₀, PM_2.5, SO₂, and CO) remain below the minor permitting thresholds listed in 18 AAC 50.502(c)(4) with or without the limit.

ADEC Preliminary Review:  Based on review of the application, ADEC has made a preliminary decision to approve the ORL for the Diamond Pad.

Available Information: Copies of the ORL application and ADEC’s preliminary approval 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 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 ORL 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 (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 ADA Coordinator Kristin Mabry, kristin.mabry@alaska.gov, 1-907-334-0884; 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 ORL may be submitted electronically via ADEC’s public notice site at https://dec.alaska.gov/Applications/Air/airtoolsweb/FormalComments, or to Ibnul Hasan by mail to 610 University Ave, Fairbanks, Alaska 99709, or by email to ibnul.hasan@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 December 19, 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.