Determination of Attainment of the 1-Hour Ozone National Ambient Air Quality Standards in the Sacramento Metro Nonattainment Area in California

Zusammenfassung

EPA is determining that the Sacramento Metro 1-hour ozone nonattainment area (Sacramento Metro Area) has attained the revoked National Ambient Air Quality Standard (1-hour ozone NAAQS or standard), and to exclude certain 2008 data caused by wildfire exceptional events. These air quality determinations were proposed in conjunction with a proposed determination to terminate the State of California's obligations regarding 1-hour ozone section 185 fee program SIP provisions for the Sacramento Metro Area. In this notice, EPA is finalizing only that portion of its notice of proposed rulemaking that determines that the Sacramento Metro Area has attained the 1-hour ozone standard, and that excludes certain exceedances as caused by ozone exceptional events. These air quality determinations were addressed separately in the proposed rulemaking and are severable from the other issues that relate to termination of section 185 1-hour ozone requirements. EPA is not at this time taking final action on other aspects of our notice of proposed rulemaking that address termination of 1-hour ozone section 185 fee requirements. EPA intends to address any other issues relating to Sacramento Metro Area 1-h