The Arizona plan is evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Classifications
AQCR (constituent counties) -------------------------------------------------
PM SOX NO2 CO O3----------------------------------------------------------------------------------------------------------------Maricopa Intrastate (Maricopa)................................ I III III I IPima Intrastate (Pima)........................................ I II III III INorthern Arizona Intrastate (Apache, Coconino, Navajo, I III III III III
Yavapai).....................................................Mohave-Yuma Intrastate (Mohave, Yuma)......................... I III III III IIICentral Arizona Intrastate (Gila, Pinal)...................... I IA III III IIISoutheast Arizona Intrastate (Cochise, Graham, Greenlee, Santa I IA III III III
Cruz)........................................................---------------------------------------------------------------------------------------------------------------- [45 FR 67345, Oct. 10, 1980]