Approval and Promulgation of Implementation Plans and Designations of Areas for Air Quality Planning Purposes; Missouri and Illinois; St. Louis; Determination of Attainment by Applicable Attainment Date for the 1997 Ozone National Ambient Air Quality Standard (NAAQS)
air-emissions · Rule · Published 2012-04-30 · Effective 2012-05-30 · IL · 77 FR 25363
Document
Document number
2012-10207
Federal Register citation
77 FR 25363
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2012-04-30
Effective date
2012-05-30
State
IL
EPA docket
EPA-R07-OAR-2012-0053
Abstract
EPA is taking final action to determine, pursuant to the Clean Air Act (CAA), that the bi-state St. Louis (MO-IL) ozone nonattainment area ("St. Louis area") attained the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment date of June 15, 2010. This determination is based upon complete, quality- assured, and certified ambient air quality data from the 2007-2009 monitoring period which show that the St. Louis area has monitored attainment of the 1997 8-hour ozone NAAQS as of the applicable date.