A maintenance plan for the 24-hour PM10 standard for the South Coast Air Basin was approved in 2013 to maintain attainment of the PM10 standard from July 2013 through July 2023. A second maintenance plan for PM10 covering the 12-year period from 2023 to 2035 is developed to address Clean Air Act Requirements. 

• Final 2021 PM10 Maintenance Plan for the South Coast Air Basin - June 2021 (PDF, 2 mb)
• Notice of Public Hearing - May 4, 2021 (PDF, 55 kb)
• Draft Final 2021 PM10 Maintenance Plan for the South Coast Air Basin - May 4, 2021 (PDF, 1 mb)
• Notice of Public Consultation Meeting - April 13, 2021 (PDF, 274 mb)
• Agenda - April 13, 2021 (PDF, 223 kb)
• Draft 2021 PM10 Maintenance Plan for the South Coast Air Basin - April 8, 2021 (PDF, 1 mb)
• Presentation - April 13, 2021 (PDF, 1 mb)
• Printer Friendly Presentation  - April 13, 2021 (PDF, 396 kb)