ADEQ is holding this hearing to provide the public the opportunity to comment on the the proposal of three actions:

• Revision to the Arizona State Implementation Plan (SIP) for the Hayden Sulfur Dioxide Nonattainment Area for the 1971 and 2010 National Ambient Air Quality Standards (NAAQS).
• Significant Permit Revision to an Air Quality Control Permit to ASARCO LLC for its Hayden Operations facility located in Gila County, Arizona.
• Revised good engineering practice (GEP) demonstration study.

Date: Thursday, June 15, 2023
Time: 3 p.m.
Location: Hayden Senior Center
                   520 N. Velasco Avenue
                   Hayden, AZ 85135

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