Clean Air Program

• History of the Clean Air Program
  Learn more about the Clean Air Program, why it started and how it has evolved.
• Information on Air Pollution in the Valley
• Clean Air Program Awards
• HPA E-alerts signup form

List of recent HPA dates

Ozone HPA's in 2008:

• April 24, 2008

Ozone HPA's in 2007:

• August 16, 2007
• July 5, 2007

PM-10 HPA’s in 2006-07:

• November 8, 2007
• June 6, 2007
• May 4, 2007
• April 12, 2007
• December 15, 2006
• December 14, 2006
• December 13, 2006
• December 12, 2006
• December 7, 2006
• November 17, 2006