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

40 C.F.R. § 52.1071

Classification of regions

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The Maryland plans were evaluated on the basis of the following classifications:

Air quality control regionPollutant
Particulate matterSulfur oxidesNitrogen dioxideCarbon monoxideOzone
Cumberland-Keyser InterstateIIIIIIIIIII
Central Maryland IntrastateIIIIIIIIIIIII
Metropolitan Baltimore IntrastateIIIII
National Capital InterstateIIIIIII
Southern Maryland IntrastateIIIIIIIIIIIIIII
Eastern Shore IntrastateIIIIIIIIIIIIII
[37 FR 10870, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 45 FR 53475, Aug. 12, 1980]