§ 52.121 - Classification of regions.

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§ 52.121 Classification of regions.

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

AQCR (constituent counties)	Classifications
AQCR (constituent counties)	PM	SO_X	NO₂	CO	O₃
Maricopa Intrastate (Maricopa)	I	III	III	I	I
Pima Intrastate (Pima)	I	III	III	III	I	III
Northern Arizona Intrastate (Apache, Coconino, Navajo, Yavapai)	I	III	III	III	III
Mohave-Yuma Intrastate (Mohave, Yuma)	I	III	III	III	III
Central Arizona Intrastate (Gila, Pinal)	I	IA	III	III	III	I
Southeast Arizona Intrastate (Cochise, Graham, Greenlee, Santa Cruz)	I	IA	III	III	III

[83 FR 42219, Aug. 21, 2018, as amended at 89 FR 71835, Sept. 4, 2024]

                    
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§ 52.121 - Classification of regions.

§ 52.121 Classification of regions.

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