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. California
  8. Classification of regions.

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§ 52.221 Classification of regions.

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

Expand Table

Table 1 to § 52.221

Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)
Great Basin Valley Intrastate I III III III III
Lake County Intrastate II III III III I
Lake Tahoe Intrastate II III III I III
Metropolitan Los Angeles Intrastate I III III I I
Mountain Counties Intrastate II III III I I
North Central Coast Intrastate II III III III I
North Coast Intrastate II III III III III
Northeast Plateau Intrastate III III III III III
Sacramento Valley Intrastate II III III I I
San Diego Intrastate II III III I I
San Francisco Bay Area Intrastate II III III I I
San Joaquin Valley Intrastate II III III I I
South Central Coast Intrastate III III III III I
Southeast Desert Intrastate I III III III I

[86 FR 16537, Mar. 30, 2021]


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