SIP Proposal: California (base-year emissions inventory for the Imperial County 2012 fine particulate matter nonattainment area).

SIP Approval: California (approval of 2013 base-year emissions inventories and disapproval of motor vehicle emission budgets and attainment demonstration for the San Joaquin Valley 1997 annual fine particulate matter nonattainment area).

SIP Approval: Illinois (revisions to base-year emissions inventory and motor vehicle inspection and maintenance requirements for the Illinois portion of the Chicago-Naperville, Illinois-Indiana-Wisconsin, 2008 ozone nonattainment area).

SIP Approval: California (base-year emissions inventory, reasonable further progress demonstration, and motor vehicle emissions budgets for the San Joaquin Valley, California, 2008 eight-hour ozone nonattainment area).

SIP Approval: Massachusetts (2011 base-year emissions inventory, emissions statement certification, stationary source registration, and emergency episode planning requirements).

SIP Approval: Missouri (base-year emissions inventory for the Jackson County and Jefferson County 2010 one-hour sulfur dioxide nonattainment areas).

SIP Proposal: Massachusetts (base-year emissions inventory, emissions statements, source registration, and emergency episode planning).