# Approval and Promulgation of Implementation Plans
> **Rule** · — · Published 2015-06-12 · 80 FR 33413
## Document
- **Document number:** 2015-14398
- **Category:** other
- **Federal Register citation:** 80 FR 33413
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-06-12
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/06/12/2015-14398/approval-and-promulgation-of-implementation-plans)
---
*MORVS · CC0 1.0*