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

40 C.F.R. § 52.2421

Classification of regions

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The Virginia plan was evaluated on the basis of the following classifications:

Air quality control regionPollutant
Particulate matterSulfur oxidesNitrogen dioxideCarbon monoxidePhotochemical oxidants (hydrocarbons)
Eastern Tennessee-Southwestern Virginia InterstateIIIIIIIIIII
Valley of Virginia IntrastateIIIIIIIIIIIII
Central Virginia IntrastateIIIIIIIIIIIII
Northeastern Virginia IntrastateIAIIIIIIIIIIII
State Capital IntrastateIIIIIIIIIII
Hampton Roads IntrastateIIIIIIIIII
National Capital InterstateIIIIIII
[37 FR 15090, July 27, 1972, as amended at 39 FR 16347, May 8, 1974]