Regulation & law · 06/12/2000

EPA Proposes Attainment for Portneuf Valley PM-10 Nonattainment Area in Idaho

The US Environmental Protection Agency (EPA) is proposing to determine that the Portneuf Valley area in Idaho has met the National Ambient Air Quality Standard (NAAQS) for particulate matter with a diameter of 10 micrometers (PM-10) as of December 31, 1996.