Approval and Promulgation of State Implementation Plan Revisions; Colorado; Attainment Demonstration for the 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area, and Approval of Related Revisions
air-emissions · Rule · Published 2018-07-03 · Effective 2018-08-02 · CO · 83 FR 31068
Document
Document number
2018-13599
Federal Register citation
83 FR 31068
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2018-07-03
Effective date
2018-08-02
State
CO
EPA docket
EPA-R08-OAR-2017-0567
Abstract
On May 31, 2017, the State of Colorado submitted State Implementation Plan (SIP) revisions related to attainment of the 2008 8-hour ozone National Ambient Air Quality Standard (NAAQS) for the Denver Metro/North Front Range (DMNFR) Moderate nonattainment area by the applicable attainment date of July 20, 2018. The Environmental Protection Agency (EPA) is approving the majority of the submittal, as well as revisions made to Colorado's Reg. No. 7 in a May 5, 2013 SIP submission. The EPA is deferring action on portions of the submitted reasonably available control technology (RACT) rules. This action is being taken in accordance with the Clean Air Act (CAA).