EPAFinal Rule
Air Quality State Implementation Plans; Approvals and Promulgations: Arizona; Yuma 2015 8-Hour Ozone Nonattainment Area; Redesignation Request and Maintenance Plan
EnvironmentHealthcare
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Summary
Arizona is requesting to remove the Yuma area from the federal list of regions with unhealthy ozone pollution levels, saying that air quality there has improved enough to meet national standards. The EPA is reviewing this request and approving a maintenance plan to ensure Yuma keeps its air clean in the future.
Key Points
- 1Yuma, Arizona previously failed to meet federal air quality standards for ozone (a harmful air pollutant) and was placed on a list of problem areas
- 2Arizona claims the area has now improved enough to no longer be considered a nonattainment area and is asking for official redesignation
- 3The EPA is approving Arizona's maintenance plan, which outlines how the state will keep ozone levels low and prevent air quality from getting worse again
- 4If approved, Yuma would face less strict air quality regulations going forward, but still must monitor and report ozone levels
- 5Cleaner air benefits residents' health, especially children and people with asthma or lung disease
Impact Assessment
If you are a manufacturer or energy company in Yuma, Arizona, this means you may face reduced air quality compliance requirements if the redesignation is approved, potentially lowering operational costs.
Impact Level
Moderate
Geographic Scope
State-specific
Compliance Cost
Minimal
Who is Affected
ManufacturersEnergy CompaniesState GovernmentsConsumers
Key Dates
Published
November 18, 2025
Regulatory Connections
Amends CFR Sections
40 CFR Part 5140 CFR Part 82
This summary is for informational purposes only. It may not capture all nuances of the regulation. Always refer to the official text for authoritative information.
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