EPA Finds Mariposa County Attained 2015 Ozone Standard
October 30, 2025
October 30, 2025
WASHINGTON, Oct. 30 (TNSFR) -- The U.S. Environmental Protection Agency issued a final rule determining that the Mariposa County area in California met the 2015 ozone national ambient air quality standards by its Aug. 3, 2024, attainment date.
This action fulfills EPA's statutory obligation under the Clean Air Act to determine the area's air quality status. The finding is based on complete, quality-assured, and certified ambient air quality monitoring data spanning calenda . . .
This action fulfills EPA's statutory obligation under the Clean Air Act to determine the area's air quality status. The finding is based on complete, quality-assured, and certified ambient air quality monitoring data spanning calenda . . .