StacksVerified U.S. regulatory reference

40 CFR §52.331

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
On April 14, 1989, the Governor submitted a Committal SIP for the Colorado Group II PM10 areas. The SIP commits the State to continue to monitor for PM10, report data and to submit a full SIP if a violation of the PM10 National Ambient Air Quality Standards is detected.