# Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Second 10-Year Carbon Monoxide Maintenance Plan for Fort Collins
> **Rule** · Direct final rule. · Published 2013-09-12 · Effective 2013-11-12 · 78 FR 56164
## Document
- **Document number:** 2013-21987
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 56164
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-09-12
- **Effective date:** 2013-11-12
- **State:** CO
- **EPA docket:** EPA-R08-OAR-2011-0708
## Abstract

EPA is taking direct final action approving a State Implementation Plan (SIP) revision submitted by the State of Colorado. On May 25, 2011, the Governor of Colorado's designee submitted to EPA a Clean Air Act (CAA) section 175A(b) second 10-year maintenance plan for the Fort Collins area for the carbon monoxide (CO) National Ambient Air Quality Standard (NAAQS). This limited maintenance plan (LMP) addresses maintenance of the CO NAAQS for a second 10-year period beyond the original redesignation. This action is being taken under sections 110 and 175A of the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/09/12/2013-21987/approval-and-promulgation-of-air-quality-implementation-plans-state-of-colorado-second-10-year)
---
*AI Analytics · CC0 1.0*