# Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; 2012 PM2.5 Infrastructure Requirements

> **EPA** · Rulemaking · Modified 2025-12-18T15:22:12Z

## Docket
- **Docket ID:** EPA-R09-OAR-2023-0539
- **Agency:** EPA
- **Type:** Rulemaking
- **Last modified:** 2025-12-18T15:22:12Z

## Source
- [regulations.gov docket](https://www.regulations.gov/docket/EPA-R09-OAR-2023-0539)
- [Public comments](https://www.regulations.gov/docket/EPA-R09-OAR-2023-0539/comments)

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