Classification of regions.

§ 52.121 Classification of regions.

The Arizona plan is evaluated on the basis of the following classifications:

AQCR (constituent counties) Classifications
PM SOXNO2CO O3
Maricopa Intrastate (Maricopa)IIIIIIIII
Pima Intrastate (Pima)IIIIIIIIIII
Northern Arizona Intrastate (Apache, Coconino, Navajo, Yavapai)IIIIIIIIIIIII
Mohave-Yuma Intrastate (Mohave, Yuma)IIIIIIIIIIIII
Central Arizona Intrastate (Gila, Pinal)IIAIIIIIIIII
Southeast Arizona Intrastate (Cochise, Graham, Greenlee, Santa Cruz)IIAIIIIIIIII
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