The U.S. Environmental Protection Agency periodically reviews and establishes health-based national air quality standards (also referred to as NAAQS) for ozone, particulate matter, and other criteria air pollutants guided by the Clean Air Act (CAA). The CAA requires areas designated as nonattainment for these standards to develop plans, known as State Implementation Plans (SIPs). SIPs are comprehensive plans that describe how an area will attain federal air quality standards. The main Air Quality Management Plan (AQMP) can be found here. Below is a list of other new and previously submitted SIPs developed to address various CAA requirements.

Ozone Plans

• Coachella Valley Attainment Plan for the 2008 8-Hour Ozone Standard (Adopted October 4, 2024)
• Coachella Valley Contingency Measure SIP Revision for the 2008 8-Hour Ozone Standard (Adopted March 1, 2024)
• Request to Reclassify Coachella Valley for the 2008 8-Hour Ozone Standard and the Updated Motor Vehicle Emissions Budgets (Adopted November 4, 2022)
• Coachella Valley Extreme Area Plan for 1997 Ozone Standard (Adopted December, 4, 2020)

PM2.5 Plans

• South Coast Air Basin Attainment Plan for the 2012 Annual PM2.5 Standard (Adopted June 7, 2024)
• 2021 PM2.5 Redesignation Request and Maintenance Plan for the 2006 and 1997 24-hour PM2.5 Standards for South Coast Air Basin (Adopted November 5, 2021)
• South Coast PM2.5 Plan for 2006 PM2.5 Standard (Adopted October 7, 2020)

PM10 Plans

• South Coast PM10 Maintenance Plan for 1987 PM10 Standard (Adopted June 4, 2021)
• Coachella Valley PM10 Plans

Lead State Implementation Plan