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Public Notice
Air Quality

On March 31, 2023, the public comment period begins for the proposal to issue Significant Permit Revision Number 97169 under Air Quality Control Permit Number 90384 to Arizona Public Service for the installation of 110 Tier 4 diesel engines each rated at 625 kilowatts (kW) to assist with supplying power during peak periods at the Yucca Power Plant located in Yuma County, Arizona. The comment period ends April 30, 2023.

Public Notice Information

Class I Air Quality Permit No. 90384

The facility is subject to the requirements of the Federal Clean Air Act, Code of Federal Regulations, Arizona Revised Statute 49-426, and the Arizona Administrative Code, Title 18, Chapter 2. The facility emits the following air contaminants: coarse particulate matter with diameters 10 micrometers or less (PM10), fine particulate matter with diameters 2.5 micrometers or less (PM2.5), volatile organic compounds (VOCs), nitrogen oxides (NOX), sulfur dioxide (SO2), carbon monoxide (CO) and hazardous air pollutants (HAPs).

Permittee

Arizona Public Service

Facility Information

Yucca Power Plant
7522 S. Somerton Ave.
Yuma, AZ 85364

Review Documents

Original Published Public Notice | View/Download > 
Draft Permit | View/Download >
Draft Technical Support Document | View/Download > 
Permit Application | View/Download >

You may also review the above documentation in person at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: March 31, 2023 – April 30, 2023

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by April 30, 2023):

       ADEQ
       Air Quality Division, Air Permits
       Attn: 
Karla Murrieta
       1110 W. Washington St.
       Phoenix, AZ  85007

   At Virtual Public HearingMay 1, 2023, 1p.m. | View Hearing Information >

People who file comments on the permit will have the right to appeal the final decision as an appealable agency action to the Office of Administrative Hearing (OAH) pursuant to §41.1092.03, and the appeal must be filed within 30 days after the issuance of the final decision. The OAH may sustain, modify or reverse the final decision.

EPA Petition Process

This permit is subject to review by the Environmental Protection Agency (EPA) pursuant to 40 CFR 70.8 and Arizona Administrative Code R18-2-307. If EPA does not object to the issuance of this permit, you may petition to EPA within 60 days after the expiration of EPA's 45-day review period. A petition shall be based only on objections to the permit that were raised with reasonable specificity during the public comment period, unless the petitioner demonstrates that it was impracticable to raise such objections within such period, or unless the grounds for such objection arose after such period. Any person who petitions to EPA pursuant to 40 CFR 70.8(d) shall notify ADEQ by certified mail within 10 days after such petition.

Comments may be submitted to EPA according to the process for Title V Petitions | Learn More >