EPA Approves Arizona Air Plan Revision for Gila County Ozone Controls
AI-generated summary for informational purposes only. Not legal advice. See the original source for the authoritative text.
This rule approves Arizona’s plan showing that the Gila County portion of the Phoenix-Mesa ozone nonattainment area meets federal requirements for reasonably available control technology under the 2015 ozone air quality standards. The practical effect is limited but important for local air compliance: Arizona’s submitted analysis and related negative declarations are now part of the federally approved state air plan. Regulated sources, state environmental officials, and local businesses in the affected area should treat the approved plan as the operative framework for ozone-related control obligations. The rule takes effect on June 22, 2026.
AI-generated summary. May contain errors. Refer to official sources for legal decisions.
Key Changes
- Approves Arizona’s SIP revision for the Gila County portion of the Phoenix-Mesa ozone nonattainment area
- Accepts ADEQ’s RACT analysis and negative declarations for the 2015 ozone standards
- Makes the approved materials part of the federally enforceable state air plan
Obligations
What this law requires
Regulated stationary sources in the Gila County portion of the Phoenix-Mesa ozone nonattainment area must follow the federally approved Arizona SIP framework for reasonably available control technology for the 2015 ozone NAAQS once the EPA approval is effective.