52.1671—Classification of regions.

The New York plans were evaluated on the basis of the following classifications:

Air quality control region	Pollutant
Air quality control region	Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Photochemical oxidants (hydrocarbons)
Niagara Frontier Intrastate	I	I	III	III	I
Champlain Valley Interstate	II	II	III	III	III
Central New York Intrastate	I	II	III	I	I
Genesee-Finger Lakes Intrastate	II	II	III	III	I
Hudson Valley Intrastate	I	II	III	III	III
Southern Tier East Intrastate	II	II	III	III	III
Southern Tier West Intrastate	II	II	III	III	III
New Jersey-New York-Connecticut Interstate	I	I	I	I	I

Code of Federal Regulations

[37 FR 10882, May 31, 1972, as amended at 39 FR 16347, May 8, 1974]