# Approval and Promulgation of Implementation Plans
> **Rule** · — · Published 2015-06-17 · 80 FR 34538
## Document
- **Document number:** 2015-14652
- **Category:** other
- **Federal Register citation:** 80 FR 34538
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-06-17
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/06/17/2015-14652/approval-and-promulgation-of-implementation-plans)
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