EPA proposed to amend the new source performance standards for electric utility and industrial-commercial-institutional steam-generating units; see above for direct final rule.

EPA proposed to amend NESHAPs for the Portland cement manufacturing industry and the standards of performance for Portland cement plants; see above for direct final rule.

EPA proposed to update a portion of the outer continental shelf air regulations for California.

EPA seeks public comment on proposed federal implementation plan supplements to the Interstate Transport Rule for fine PM and ozone.

EPA repealed the grandfather provision for fine particulate matter (PM) under the PSD permit program.

NMFS announces that the annual harvest guideline for the 
commercial lobster fishery in the Northwestern Hawaiian Islands (NWHI) 
for calendar year 2011 is established at zero lobsters.

FWS removed the Maguire daisy from the list of endangered and threatened plants under the ESA.

EPA denied in part petitions to reconsider NESHAPs and new source performance standards (NSPS) for the Portland cement industry and denied requests for a stay.

SIP Proposal: Maryland (VOC emissions; see above for direct final rule)

SIP Withdrawal: Wisconsin (1997 eight-hour ozone NAAQS for the Milwaukee-Racine and Sheboygan areas)