# Approval and Promulgation of Implementation Plans; Kentucky Prevention of Significant Deterioration and Nonattainment New Source Review
> **Rule** · Final rule. · Published 2006-07-11 · Effective 2006-08-10 · 71 FR 38990
## Document
- **Document number:** 06-6089
- **Category:** air-emissions
- **Federal Register citation:** 71 FR 38990
- **CFR reference:** 40 CFR 52
- **Publication date:** 2006-07-11
- **Effective date:** 2006-08-10
- **State:** KY
- **EPA docket:** EPA-R04-OAR-2004-KY-0004-200610
## Abstract

EPA is taking final action to approve revisions to the Kentucky State Implementation Plan (SIP) submitted by the Commonwealth of Kentucky on September 2, 2004, and amended by request dated August 23, 2005. The SIP revisions modify Kentucky's Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR) regulations in the SIP to address changes to the federal new source review (NSR) regulations, which were promulgated by EPA on December 31, 2002 (67 FR 80186) and November 7, 2003 (68 FR 63021) (commonly referred to as the "2002 NSR reform rules"). The September 2004 SIP revisions being approved today also include a rule setting a significance level of 100 tons per year (tpy) for ozone depleting substances.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/07/11/06-6089/approval-and-promulgation-of-implementation-plans-kentucky-prevention-of-significant-deterioration)
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