40 CFR 52.1071 - Classification of regions.

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

Air quality control region	Pollutant					Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Ozone	Cumberland-Keyser Interstate	I	I	III	III	III	Central Maryland Intrastate	II	II	III	III	III	Metropolitan Baltimore Intrastate	I	I	I	I	I	National Capital Interstate	I	I	III	I	I	Southern Maryland Intrastate	III	III	III	III	III	Eastern Shore Intrastate	II	III	III	III	III

[37 FR 10870, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 45 FR 53475, Aug. 12, 1980]