EPA determined in its court-ordered review that current primary and secondary NAAQS for carbon monoxide provide an adequate margin of safety to protect public health.

EPA deferred the reporting deadline for certain data elements by direct emitter reporters under the Mandatory Greenhouse Gas Reporting Rule until March 31, 2013, and March 31, 2015.

EPA promulgated an FIP plan for the San Juan Generating Station near Farmington, New Mexico, to address interstate transport of pollution. 

EPA finalized an FIP for 27 states whose emissions of NOx and sulfur dioxide (SO2) contribute to harmful levels of fine particulate matter (PM) and ozone in downwind states and requested comment on six additional states. 

EPA finalized a limited federal implementation plan (FIP) for the North Coast unified air quality management district of California that establishes PSD permitting requirements for nitrogen oxide (NOx) emission sources. 

EPA adjusted the allowance system controlling U.S. consumption and production of hydrochlorofluorocarbons (HCFCs) as a result of a recent court decision vacating a portion of the rule titled “Protection of Stratospheric Ozone: Adjustments to the Allowance System for Controlling HCFC Production, Import, and Export; Final Rule.” 

EPA, due to new information, withdrew its proposal to exclude (or delist) from the lists of hazardous wastes landfill leachate generated by Republic Services, Inc./BFI Gulf West Landfill in Anahuac, Texas.