EPA proposed to amend certain provisions related to best available monitoring methods in regulations for Petroleum and Natural Gas Systems of the Greenhouse Gas Reporting Rule.

EPA proposed changes to the calculation and monitoring provisions of the Mandatory Greenhouse Gas Reporting Rule for large semiconductor manufacturing facilities.

EPA proposed to amend the NESHAP for the plating and polishing area source category to exclude bench-scale activities.

EPA seeks public comment on draft guidance concerning the application of certain emission certification regulations to heavy-duty diesel engines using selective catalytic reduction systems.

SIP Proposal: California (VOC and PM emissions from commercial charbroiling).

SIP Proposal:  California (VOCs for the San Joaquin Valley unified air pollution control district).

SIP Proposal:  California (VOC emissions for the San Joaquin Valley unified air pollution control district).

SIP Proposal: California (volatile organic compound (VOC) emissions for the San Joaquin Valley unified air pollution control district and the Imperial County air pollution control district).

South Carolina (PSD and nonattainment new source review requirements).

Pennsylvania (air pollution control rules and regulations for Allegheny County).