Notice of Application for State Air Quality Permit AQ0109MSS01 Rev. 1 and AQ0109TVP04 Rev. 1 Golden Valley Electric Association, Zehnder Facility

The Alaska Department of Environmental Conservation (ADEC) has made a preliminary decision to issue Air Quality Control Minor Permit AQ0109MSS01 Rev. 1 for the Zehnder Facility. Additionally, ADEC proposes to issue a significant revision to the Title V operating permit AQ0109TVP04 using the integrated review procedures described in 18 AAC 50.326(c)(1). Applicant: Golden Valley Electric Association Permittee Address: P.O. Box 71249, Fairbanks, AK 99707-1249 Location: 64o 51 ́ 15" North; 147o 43 ́ 30" West 758 Illinois Street, Fairbanks, AK 99707 Application: The Permittee submitted an application for Minor Permit AQ0109MSS01 under 18 AAC 50.508(5) for an Owner Requested Limit (ORL) to avoid classification as a major source of SO 2 in a nonattainment area under 40 C.F.R. 51.165 and 18 AAC 50.311. With this permit revision, the Department reclassifies the basis for the permit issuance to AS 46.14.130(c)(2), because the previous ORLs have been removed and the Department finds that public

health or air quality effects provide a reasonable basis to regulate the stationary source. This finding is contained in the State Air Quality Control Plan adopted on November 19, 2019. The Department is processing Minor Permit AQ0109MSS01 Rev. 1 under the Department’s revoke and reissuance procedures under AS 46.14.280(a)(2), and therefore no permit application was submitted by the Permittee. The Department sent GVEA a notice of intent to revoke and reissue Minor Permit AQ0109MSS01 under AS 46.14.280(a)(2), on October 20, 2023. The Department is concurrently processing Revision 1 to Title V Operating Permit AQ0109TVP04 to incorporate the terms and conditions of the preliminary Minor Permit AQ0109MSS01 Revision 1 into the operating permit. This public notice is for the draft operating permit and preliminary minor permit. Activity: The Zehnder Facility is an electric utility owned and operated by GVEA and is classified under SIC code 4911 - Electric Services. Emissions: The potential annual emissions of regulated air pollutants at the stationary source will not exceed: 2,115 tons of NOx, 20.9 tons of Carbon Monoxide, 30.4 tons of Particulate Matter, 580 tons of Sulfur Dioxide, 2.6 tons of Volatile Organic Compounds, 391,134 tons of Carbon Dioxide Equivalent emissions, and 3.0 tons of Hazardous Air Pollutants (HAP), with highest individual HAP (manganese) estimated at 1.86 tons. The total annual potential emissions of regulated air pollutants, other than greenhouse gases, are 2748.9 tons. ADEC Preliminary Review: Based on review of the application, ADEC drafted a preliminary permit decision for the Zehnder Facility under AS 46.14 and 18 AAC 50. Available Information: Copies of the revoke and reissue letter, ADEC’s preliminary minor permit, technical analysis report (TAR), draft operating permit, and statement of basis (SOB) are available at the following offices: ADEC Air Permits Program, 333 Willoughby Avenue, 8th Floor, Ste 800, State Office Building, Juneau, AK 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 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 Claire Fishwick at (907) 465-5066 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 preliminary minor permit and proposed operating permit may be submitted electronically via ADEC’s public notice site at https://aq.alaskadec.commentinput.com?id=mtQsEAScT, or to Adam Leibert by mail to 555 Cordova Street, Anchorage, AK 99501, or by email to adam.leibert@alaska.gov. Comments must be received by close of public comments period at 11:59 p.m. Alaska time on February 26, 2024. Except for comments classified under AS 46.14.520, all public comments submitted during the public comment period can be viewed at https://aq.alaskadec.commentinput.com?id=mtQsEAScT after the public comment period.