40 CFR §52.1371
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The Montana Emergency Episode Avoidance Plan was revised with an August 2, 2004 submittal by the Governor. The August 2, 2004 Emergency Episode Avoidance Plan classified the Air Quality Control Regions (AQCR) as follows: