Federal Register - "Approval of Missouri Air Quality Implementation Plans; Redesignation of the Missouri Portion of the St. Louis-St. Charles-Farmington, MO-IL 2012 PM2.5"

Title: Approval of Missouri Air Quality Implementation Plans; Redesignation of the Missouri Portion of the St. Louis-St. Charles-Farmington, MO-IL 2012 PM2.5 Source: Federal Register Data/Action: Environmental Protection Agency (Proposed Rule) Date: 5/16/2019 Text Preview: ...ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 81 [EPA-R07-OAR-2019-0190; FRL-9993-27-Region 7] Approval of Missouri Air Quality Implementation Plans; Redesignation of the Missouri Portion of the St. Louis-St. Charles- Farmington, MO-IL 2012 PM2.5 Unclassifiable Area AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. ----------------------------------------------------------------------- SUMMARY: The Environmental Protection Agency (EPA)... ...Environmental Protection Agency, Air Planning and Development Branch, 11201 Renner Boulevard, Lenexa, Kansas 66219 at (913) 551-7214, or by email at [email protected] . SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and ``our'' refer to EPA... ...EPA now has sufficient data to determine that the St. Louis area is in attainment of the 2012 PM 2.5 NAAQS. Therefore, EPA is proposing to approve the state's December 11, 2018 request, and redesignate the area to unclassifiable/attainment for the 2012 PM 2.5 NAAQS based upon valid, quality-assured, and certified ambient air monitoring data showing that the PM 2.5 monitors in the area are in compliance with the 2012 PM 2.5 NAAQS. The EPA...