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Adjustments to Original Lead (2008) Nonattainment Area Baseline
Adjustments to Original Lead (2008) Nonattainment Area Baseline
Data is current as of November 30, 2025| BOUNDARY CHANGE |
| September 24, 2014, Effective October 03, 2014 ( 79 FR 56962 ) |
| Hayden, AZ - ARIZONA |
| DESIGNATION TO NONATTAINMENT |
| September 03, 2014, Effective October 03, 2014 ( 79 FR 52205 ) |
| Hayden, AZ - ARIZONA |