EPA is taking direct final action to approve a PM10 attainment and maintenance plan for the Medford-Ashland, Oregon nonattainment area (Medford-Ashland NAA) and to redesignate the area from nonattainment to attainment for PM10. PM10 air pollution is particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers. Also in this action, EPA is approving revisions to Oregon's statewide industrial source rules for new and modified major industrial sources of PM10 and revisions to the area-specific industrial source rules that apply in the Medford-Ashland NAA. EPA is approving the SIP revisions and redesignation request because the State adequately demonstrates that the control measures being implemented in the Medford-Ashland NAA result in attainment and maintenance of the PM10 National Ambient Air Quality Standards and all other requirements of the Clean Air Act for redesignation to attainment are met.