# Approval and Promulgation of Implementation Plans; Alabama: General and Transportation Conformity & New Source Review Prevention of Significant Deterioration for Fine Particulate Matter (PM2.5)
> **Rule** · Final rule. · Published 2012-09-26 · Effective 2012-10-26 · 77 FR 59100
## Document
- **Document number:** 2012-23586
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 59100
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-09-26
- **Effective date:** 2012-10-26
- **State:** AL
- **EPA docket:** EPA-R04-OAR-2012-0079
## Abstract

EPA is taking final action to approve changes to the Alabama State Implementation Plan (SIP), submitted by the Alabama Department of Environmental Management (ADEM) to EPA on May 2, 2011. The May 2, 2011, SIP revision modifies Alabama's New Source Review (NSR), Prevention of Significant Deterioration (PSD), and Nonattainment New Source Review (NNSR) programs to adopt into the Alabama SIP federal NSR PSD requirements for the fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) as promulgated in EPA's 2008 NSR PM<INF>2.5</INF> Implementation Rule and the 2010 PM<INF>2.5</INF> PSD Increment, Significant Impact Levels (SILs) and Significant Monitoring Concentration (SMC) Rule. The SIP revision also changes the State's general and transportation conformity regulations. EPA is approving portions of Alabama's May 2, 2011, SIP revision because they are consistent with the Clean Air Act (CAA or Act) and EPA regulations regarding NSR permitting. EPA received one off-topic comment on the August 6, 2012, proposed rulemaking, and a brief response is provided below.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/09/26/2012-23586/approval-and-promulgation-of-implementation-plans-alabama-general-and-transportation-conformity-and)
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