Federal Register - "Approval and Promulgation of Air Quality Implementation Plans; State of Montana; Missoula PM10"

Title: Approval and Promulgation of Air Quality Implementation Plans; State of Montana; Missoula PM10 Source: Federal Register Data/Action: Environmental Protection Agency (Final Rule) Date: 5/24/2019 Text Preview: ...ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 52 and 81 [EPA-R08-OAR-2018-0235; FRL-9993-66-Region 8] Approval and Promulgation of Air Quality Implementation Plans; State of Montana; Missoula PM10 Nonattainment Area Limited Maintenance Plan and Redesignation Request AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: The Environmental Protection Agency (EPA) is approving the Limited Maintenance Plan (LMP), submitted by the State of Montana to the EPA... ...Environmental Protection Agency (EPA), Region 8, Mail Code 8ARD-QP, 1595 Wynkoop Street, Denver, Colorado 80202-1129, (303) 312-6210, [email protected] . SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and ``our'' means the EPA... ...EPA is determining that the Missoula NAA has attained the 1987 24-hour PM 10 NAAQS of 150 [micro]g/m\3\. This determination is based upon monitored air quality data for the PM 10 NAAQS during the years 2015-2017. The EPA is also approving the Missoula LMP as meeting the appropriate transportation conformity requirements. Lastly, the EPA is approving certain rule revisions the Missoula City-County Air Pollution Control Program submitted on August 3, 2016, and August 22, 2018. DATES: Effective June 24, 2019. ADDRESSES: The EPA...