# Approval and Promulgation of Implementation Plans; Louisiana; Prevention of Significant Deterioration Significant Monitoring Concentration for Fine Particulates
> **Rule** · Direct final rule. · Published 2016-10-28 · Effective 2016-12-27 · 81 FR 74923
## Document
- **Document number:** 2016-25992
- **Category:** air-emissions
- **Federal Register citation:** 81 FR 74923
- **CFR reference:** 40 CFR 52
- **Publication date:** 2016-10-28
- **Effective date:** 2016-12-27
- **State:** LA
- **EPA docket:** EPA-R06-OAR-2016-0450
## Abstract

The Environmental Protection Agency (EPA) is approving two revisions to the Louisiana State Implementation Plan (SIP) that revise the Louisiana Prevention of Significant Deterioration (PSD) permitting program to establish the significant monitoring concentration (SMC) for fine particles (PM<INF>2.5</INF>) at a zero microgram per cubic meter (0 [mu]g/m\3\) threshold level consistent with federal permitting requirements. The EPA is approving this action under section 110 and part C of the Clean Air Act (CAA or Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/10/28/2016-25992/approval-and-promulgation-of-implementation-plans-louisiana-prevention-of-significant-deterioration)
---
*AI Analytics · CC0 1.0*