Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of California; PM10 ; Redesignation of Sacramento to Attainment; Approval of PM10 Redesignation Request and Maintenance Plan for Sacramento

SUMMARY: EPA is proposing to approve, as a revision of the California state implementation plan, the State's request to redesignate the Sacramento nonattainment area to attainment for the 24-hour particulate [...]