On December 12, 2019, the California Air Resources Board approved the proposed amendments to the regulations designating areas of California as attainment, nonattainment, nonattainment-transitional, or unclassified for pollutants with State ambient air quality standards. These amendments reflect updates based on the annual review of the latest complete monitoring data (2016 to 2018).
Initial Statement of Reasons (ISOR)
- Staff Report - Initial Statement of Reasons (ISOR) and Attachments
August 27, 2019 Workshop