# Requirements for Preparation, Adoption, and Submittal of Implementation Plans
> **Rule** · — · Published 2007-06-29 · 72 FR 35663
## Document
- **Document number:** 07-55507
- **Category:** other
- **Federal Register citation:** 72 FR 35663
- **CFR reference:** 40 CFR 51
- **Publication date:** 2007-06-29
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/06/29/07-55507/requirements-for-preparation-adoption-and-submittal-of-implementation-plans)
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