Classification of regions.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Air Programs
  6. Approval and Promulgation of Implementation Plans
  7. Delaware
  8. Classification of regions.

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§ 52.421 Classification of regions.

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

Expand Table
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)
Metropolitan Philadelphia Interstate I I III I I
Southern Delaware Intrastate III III III III III

[37 FR 10856, May 31, 1972, as amended at 39 FR 16345, May 8, 1974]


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