EPA entered into a proposed consent decree under the CAA requiring it to respond to a petition seeking the Agency's objection to a CAA Title V operating permit issued by the New Mexico Environment Department to Williams Four Corners LLC for the Sims Mesa Central Delivery Point facility by April 29, 2011.

EPA issued a final rule requiring GHG monitoring and reporting from facilities that conduct geologic sequestration of carbon dioxide.

EPA proposed to approve revisions to Texas' hazardous waste management program; see above for direct final rule.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay U.S. response costs incurred at the Puckett Smelter Superfund site in Mountainboro, Alabama.

EPA proposed giving final authorization to Oregon's UST program under RCRA. 

EPA proposed to update a portion of California's outer continental shelf air regulations.

EPA proposed reconsideration of NESHAPs for industrial/commercial/institutional boilers and process heaters at major sources, for industrial boilers and commercial and institutional boilers at area sources, and for new source performance standards and emission guidelines for commercial and industrial solid waste incineration units; see above for direct final rules.

EPA proposed to defer for three years the application of the PSD and Title V permitting requirements for biogenic carbon dioxide emissions from bioenergy and other biogenic stationary sources.

EPA proposed to amend certain NESHAP regulations for the Maricopa County air quality department in Arizona and the Santa Barbara County air pollution control district in California; see above for direct final rule.

EPA proposed amendments to the NESHAPs for mercury emissions from mercury cell chlor-alkali plants.