SIP Approval: Alaska (motor vehicle inspection and maintenance program).

EPA announced approval of the use of SCR technologies with nonroad compression-ignition engines for 2011 and later model years.

EPA announced approval of the use of selective catalytic reduction (SCR) technologies with certain 2011-2012 and later model-year vehicles.

EPA entered into a proposed settlement agreement in EnerNOC v. EPA, Nos. 10-1090 & 10-1336 (D.C. Cir.), that requires the Agency to propose rulemaking to revise the NESHAP for reciprocating internal combustion engines and the new source performance standards for internal combustion engines by April 20, 2012.

EPA entered into a proposed consent decree in National Parks Conservation Ass'n v. Jackson, No. 1:11-cv-1548 (D.D.C.), that establishes proposed and final deadlines for the Agency to promulgate regional haze federal implementation plans or to approve regional haze SIPs for 34 states. 

EPA proposed to adjust the production and consumption allowances of hydrochlorofluorocarbons for 2012-2014. 

EPA proposed amendments to the heat exchange system requirements of the NESHAP for petroleum refineries.

EPA proposed amendments to NESHAPs for Group IV polymers and resins, for pesticide active ingredient production, and for polyether polyols production. 

EPA amended its acquisition regulations on compliance policies for information resources management in contracts. 

EPA finalized amendments to the NESHAP for the secondary lead smelting source category.