The Vermont plan was evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Pollutant
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Air quality control region Particulate Sulfur Nitrogen Carbon
matter oxides dioxide monoxide Ozone----------------------------------------------------------------------------------------------------------------Champlain Valley Interstate............................... II II III III IIIVermont Intrastate........................................ II II III III III---------------------------------------------------------------------------------------------------------------- [37 FR 10898, May 31, 1972, as amended at 45 FR 10782, Feb. 19, 1980]