Approval and Promulgation of Implementation Plans; Oklahoma; Disapproval of Prevention of Significant Deterioration for Particulate Matter Less Than 2.5 Micrometers-Significant Impact Levels and Significant Monitoring Concentration
air-emissions · Rule · Published 2016-10-28 · Effective 2016-11-28 · OK · 81 FR 74921
Document
Document number
2016-25982
Federal Register citation
81 FR 74921
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2016-10-28
Effective date
2016-11-28
State
OK
EPA docket
EPA-R06-OAR-2012-0263
Abstract
The Environmental Protection Agency (EPA) is disapproving the severable portions of the February 6, 2012, Oklahoma State Implementation Plan (SIP) submittal which establish certain de minimis thresholds for particulate matter less than 2.5 micrometers in diameter (PM<INF>2.5</INF>) in the Prevention of Significant Deterioration (PSD) permitting requirements. Specifically, we are disapproving provisions that adopt and implement the PM<INF>2.5</INF> significant impact levels (SILs) and significant monitoring concentration (SMC); both of which were vacated by a federal court and subsequently removed from federal PSD regulations. We are disapproving the submitted provisions as inconsistent with federal laws and regulations for the permitting of PM<INF>2.5</INF>. The EPA is finalizing this disapproval under section 110 and part C of the Clean Air Act (CAA).