OSM proposed to approve an amendment to Pennsylvania's regulatory program under SMCRA concerning limitations for post-mining discharges.

OSM proposed to approve an amendment to Pennsylvania's regulatory program under SMCRA that would remove a required amendment on regulatory exemptions for coal extraction incidental to the extraction of other minerals.

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.

EPA proposed final amendments to the NESHAPs for existing stationary spark ignition reciprocating internal combustion engines; see above for direct final rule.

OSM approved an amendment to Montana's regulatory program under SMCRA concerning letters of credit issued by banks.

OSM approved an amendment to Louisiana's regulatory program and abandoned mine land reclamation plan under SMCRA covering a wide range of provisions.