C.F.R. » Title 40 » CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY › SUBCHAPTER C—AIR PROGRAMS › PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS › Subpart G—Colorado

40 C.F.R. § 52.321

Classification of regions

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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 regionPollutant
Particulate matterSulfur oxidesNitrogen dioxideCarbon monoxideOzone
Pawnee IntrastateIIIIIIIIIIIII
Metropolitan Denver IntrastateIIIIIIIII
Comanche IntrastateIIIIIIIIIIIIIII
San Isabel IntrastateIIIIIIIIIIIII
San Luis IntrastateIIIIIIIIIIIIIII
Four Corners InterstateIAIAIIIIIIIII
Grand Mesa IntrastateIIIIIIIIIIIIIII
Yampa IntrastateIIIIIIIIIIIIIII
[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]