EPA finalized amendments to the best available monitoring methods used for the petroleum and natural gas systems source category of the Greenhouse Gas Reporting Rule.

SIP Proposal: New Hampshire (GHG thresholds for PSD program).

SIP Proposal: Indiana (greenhouse gas (GHG) thresholds for PSD program).

EPA and the National Highway Traffic Safety Administration finalized rules to establish a comprehensive program to reduce greenhouse gas emissions and fuel consumption for on-road heavy-duty vehicles that will go into effect with the 2014 model year.

SIP Proposal: West Virginia (revision to PSD program).

SIP Proposal: Minnesota (SO2 emissions; see above for direct final rule).

SIP Proposal: Colorado (revised modeling of the 1997 eight-hour ozone NAAQS for the Denver metro area/North Front Range nonattainment area).

SIP Proposal: Alaska (update of PSD program).

EPA proposed to approve Florida's plan under the CAA for implementing and enforcing the emissions guidelines applicable to existing large municipal waste combustors; see above for direct final rule.

EPA requested information and public comment on the reporting of inputs to emission equations under the Mandatory Greenhouse Gas Reporting Rule.