California Air Resources Board

In 2013, CARB approved the San Joaquin Valley Air Pollution Control District 2013 Plan for the 1-Hour Ozone Standard (2013 Attainment Plan). The 2013 Attainment Plan sets out the strategy to attain the federal 1979 1-hour ozone standard of 0.12 parts per million by 2017. In 2016, U.S. EPA determined that the San Joaquin Valley had attained the 1-hour ozone standard based on air quality data from 2012-2014. In 2023, CARB submitted to U.S. EPA the 2023 Maintenance Plan and Redesignation Request (2023 Maintenance Plan) which demonstrated continued attainment of the standard based on 2020-2022 air quality data and requested that U.S. EPA redesignate the San Joaquin Valley as attainment for the 1-hour ozone standard.

CARB Documents

2023 Maintenance Plan

• Submittal Letter to U.S. EPA (July 21, 2023)
• Executive Order S-23-013 (July 19, 2023)

2013 Attainment Plan

• Submittal Letter to U.S. EPA (December 20, 2013)
• Resolution 13-45 (November 21, 2013)
• Staff Report (November 8, 2013)
• Public Notice (October 21, 2013)
• Staff Presentation (November 21, 2013)

District Documents

• 2023 Maintenance Plan (June 15, 2023)
• 2013 Attainment Plan (September 19, 2013)

U.S. EPA Actions

• Determination of Attainment of the 1-Hour Ozone Standard (July 18, 2016)
• Approval of the 2013 Ozone Attainment Plan and 1-hour and 8-hour Ozone VMT Offsets (April 5, 2016)