40 C.F.R. § 52.321

Current through May 31, 2024

Section 52.321 - Classification of regions

The revised Denver Emergency Episode Plan, adopted by the State of Colorado February 28, 1996, was submitted by the Governor of Colorado with a September 16, 1997 letter.

Air quality control region	Pollutant
	Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Ozone
Pawnee Intrastate	I	III	III	III	III
Metropolitan Denver Intrastate	I	III	III	I	I
Comanche Intrastate	III	III	III	III	III
San Isabel Intrastate	I	III	III	III	III
San Luis Intrastate	III	III	III	III	III
Four Corners Interstate	IA	IA	III	III	III
Grand Mesa Intrastate	III	III	III	III	III
Yampa Intrastate	III	III	III	III	III

40 C.F.R. §52.321

37 FR 10855, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 44 FR 57409, Oct. 5, 1979; 74 FR 47891, Sept. 18, 2009