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1. PM-10 (1987 Standard) Designation Notices
    
   1. Designations and Classifications for Initial PM-10 Nonattainment Areas Federal Register Notice (March 15, 1991)
      See 56 FR 11101 (PDF)(5 pp, 603 K)
   
   
   2. Designation of Areas for Air Quality Planning Purposes (November 6, 1991)
      See 40 CFR Part 81 (PDF)(165 pp, 9.3 MB)
   
   
   3. Reclassification of Moderate PM-10 Nonattainment Areas to Serious Areas (January 8, 1993)
      See 58 FR 3334 (PDF)(9 pp, 1.4 MB)
   
   
   4. Designation of Areas for Air Quality Planning Purposes Federal Register Notice (December 21, 1993)
      See 58 FR 67334 (PDF)(12 pp, 1.4 MB)
   
   
   5. Final Designation of Area for Air Quality Planning Purposes; Utah; Designation of Ogden City PM10 Nonattainment Area (July 28, 1995)
      See 60 FR 38726
   
   
   6. Proposed Designation of Areas for Air Quality Planning Purposes: State of Idaho and the Fort Hall Indian Reservation (June 19, 1998)
      See 63 FR 33597
   
   
   7. Final Designation of Areas for Air Quality Planning Purposes: State of Idaho and the Fort Hall Indian Reservation (November 5, 1998)
      See 63 FR 59722
   
   
   8. Proposed Designation of Areas for Air Quality Planning Purposes; State of Arizona; Pinal County; PM₁₀ (October 1, 2010)
      See 75 FR 60680
   
   
   9. Final Designation of Areas for Air Quality Planning Purposes; State of Arizona; Pinal County; PM₁₀ (May 31, 2012)
      See 77 FR 32024
   
   
   10. Technical Amendments to Inadvertent Error: Air Quality Designations for the 2006 24-Hour Fine Particle NAAQS (2006 24-Hour PM_2.5 NAAQS, 1997 Annual PM_2.5 NAAQS, and 1987 Annual Coarse Particle PM₁₀ NAAQS (July 29, 2015)
       See 80 FR 45067