2010 South Coast Air Basin PM10 Redesignation Request, Maintenance Plan, and Conformity Budgets Categories Topics Air Quality Plans Programs California State Implementation Plans Type Information At a public meeting on March 25, 2010, the ARB approved the PM10 Redesignation Request, Maintenance Plan, and Transportation Conformity Budgets for the South Coast Air Basin.CARB DocumentsRedesignation Request and Maintenance PlanPlan Submittal Letter to U.S. EPA (April 28, 2010)Resolution 10-21 (February 25, 2010)Notice of Public Hearing (February 17, 2010)Staff Report (February 22, 2010)Transportation Conformity BudgetsSCAQMD Submittal Letter (February 19, 2010)Draft South Coast Air Basin Transportation Conformity BudgetsSupplementary Information District DocumentDraft PM10 Redesignation Request and Maintenance PlanU.S. EPA DocumentFederal Register Notice - Final Approval: Redesignation to Maintenance (June 26, 2013) Related Resources 2023 Carbon Monoxide SIP Revision 2023 San Joaquin Valley PM2.5 Plan 2023 Mariposa County Ozone Attainment Plan