# Approval and Disapproval and Promulgation of Implementation Plans; Texas; Infrastructure and Interstate Transport Requirements for the 1997 Ozone and the 1997 and 2006 PM2.5 NAAQS
> **Rule** · — · Published 2012-01-12 · 77 FR 1873
## Document
- **Document number:** C1-2011-33253
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 1873
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-01-12
- **State:** TX
- **EPA docket:** EPA-R06-OAR-2008-0638
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/01/12/C1-2011-33253/approval-and-disapproval-and-promulgation-of-implementation-plans-texas-infrastructure-and)
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