SIP Approval: Delaware (update of regulations)

EPA approved Florida's plan under the CAA for implementing and enforcing the emissions guidelines applicable to existing large municipal waste combustors.

EPA finalized rulemaking that narrows thresholds for Title V permitting programs under the Greenhouse Gas Tailoring Rule.

EPA established a federal implementation plan for Arizona, Arkansas, Florida, Idaho, Kansas, Oregon, and Wyoming because their SIPs fail to apply PSD requirements to sources of GHG emissions.

EPA determined that Arizona, Arkansas, Florida, Idaho, Kansas, Oregon, and Wyoming have failed to submit revisions to their EPA-approved SIPs to apply PSD requirements to GHG-emitting sources.

EPA deferred until August 31, 2011, the reporting deadline for year 2010 data elements that are inputs to emission equations under the Mandatory Greenhouse Gas Reporting Rule.

(new source review permitting requirements and exemptions)

SIP Approval: California (new source review permitting requirements and exemptions)

EPA finalized revisions to the primary and secondary NAAQS for lead and associated monitoring requirements.

EPA determined that the Dallas/Fort Worth moderate nonattainment area failed to attain the 1997 eight-hour ozone NAAQS and reclassified the area as a serious ozone nonattainment area; attainment must be reached no later than June 15, 2013.