On January 9, 2003, the Kern County Air Pollution Control District (KCAPCD) adopted the East Kern Ozone Attainment Demonstration, Maintenance Plan and Redesignation Request for the East Kern County Nonattainment area. On May 1, 2003, the KCAPCD Board adopted amendments to the January 2003 plan. On December 9, 2003, CARB adopted and submitted the amended plan to U.S. EPA.