# Muskegon  County, Michigan 2015 8-Hour Ozone Attainment Demonstration

> **EPA** · Rulemaking · Modified 2026-02-26T16:12:02Z

## Docket
- **Docket ID:** EPA-R05-OAR-2023-0517
- **Agency:** EPA
- **Type:** Rulemaking
- **Last modified:** 2026-02-26T16:12:02Z

## Source
- [regulations.gov docket](https://www.regulations.gov/docket/EPA-R05-OAR-2023-0517)
- [Public comments](https://www.regulations.gov/docket/EPA-R05-OAR-2023-0517/comments)

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