# Requirements for Preparation, Adoption, and Submittal of Implementation Plans
> **Rule** · — · Published 2018-03-21 · 83 FR 12260
## Document
- **Document number:** 2018-05798
- **Category:** other
- **Federal Register citation:** 83 FR 12260
- **CFR reference:** 40 CFR 51
- **Publication date:** 2018-03-21
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/03/21/2018-05798/requirements-for-preparation-adoption-and-submittal-of-implementation-plans)
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