State Plan Actions
On Public Notice
Redesignation Request for the Missouri Portion of the St. Louis Unclassifiable Area for the 2012 Annual Fine Particulate Matter (PM2.5) Standard
Missouri is proposing to submit to the U.S. Environmental Protection Agency (EPA) a request to redesignate the Missouri portion of the St. Louis unclassifiable area to attainment under the 2012 annual fine particulate matter (PM2.5) standard. The original unclassifiable designation for the area was due to monitoring data completeness issues on the Illinois side of the area. These issues have been resolved, and the Missouri and Illinois portions of the area are demonstrating compliance with the standard based on 2015-2017 quality-assured, certified ambient PM2.5 monitoring data. This request is in accordance with Section 107(d)(3)(D) of the Clean Air Act.
A public hearing for this plan action will be held on Oct. 25, 2018. Comments about this plan action will be accepted through close of business on Nov. 1, 2018.
Proposed for Adoption
None at this time.