Approval and Promulgation of Determination of Attainment for the 1997 8-Hour Ozone Standard: States of Missouri and Illinois
air-emissions · Rule · Published 2011-06-09 · Effective 2011-07-11 · IL · 76 FR 33647
Document
Document number
2011-14296
Federal Register citation
76 FR 33647
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2011-06-09
Effective date
2011-07-11
State
IL
EPA docket
EPA-R07-OAR-2010-0416
Abstract
The Environmental Protection Agency (EPA) is taking final action to determine that the St. Louis (MO-IL) metropolitan nonattainment area has attained the 1997 8-hour National Ambient Air Quality Standard (NAAQS) for ozone. The St. Louis metropolitan ozone nonattainment area includes the counties of Franklin, Jefferson, St. Charles, and St. Louis as well as St. Louis City in Missouri; and the counties of Madison, Monroe, St. Clair, and Jersey in Illinois. This final determination is based on three years of complete, quality assured ambient air quality monitoring data for Missouri and Illinois for the 2008 through 2010 ozone seasons showing attainment of the NAAQS at all ozone monitoring sites in the nonattainment area. Based on this final determination, the obligation to submit certain ozone attainment demonstration requirements, along with other requirements related to the attainment of the 1997 8-hour ozone standard are suspended.