# Air Plan Approval; Massachusetts; Infrastructure State Implementation Plan Requirements for the 2015 Ozone Standard
> **Rule** · — · Published 2020-03-17 · 85 FR 15076
## Document
- **Document number:** C1-2020-03203
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 15076
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-03-17
- **State:** MA
- **EPA docket:** EPA-R01-OAR-2019-0695
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/03/17/C1-2020-03203/air-plan-approval-massachusetts-infrastructure-state-implementation-plan-requirements-for-the-2015)
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