The Nevada plan is evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Pollutant
-----------------------------------------------------
Air quality control region Particulate Sulfur Nitrogen Carbon
matter oxides dioxide monoxide Ozone----------------------------------------------------------------------------------------------------------------Las Vegas Intrastate...................................... I IA III I I
Northwest Nevada Intrastate............................... I III III III IIINevada Intrastate......................................... IA IA III III III---------------------------------------------------------------------------------------------------------------- [45 FR 7545, Feb. 4, 1980]