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89 FR 49120

SIP Proposal: Michigan (removal of redundant definition for "used oil"). 

89 FR 49874

EPA designated one new equivalent method for measuring concentrations of ozone in ambient air.

89 FR 49815

SIP Approval: California (revisions to meet extreme area requirements for the 1997 eight-hour ozone NAAQS in the Riverside Co. nonattainment area).

89 FR 49100

SIP Approval: Michigan (removal of redundant definition for "used oil"). 

89 FR 48523

SIP Proposal: Pennsylvania (revisions to attainment plan for the Indiana, Pennsylvania 2010 one-hour sulfur dioxide nonattainment area). 

89 FR 48532

SIP Proposal: Connecticut (removal of State Order Nos. 7002B and 2087 and addition of Consent Order No. 8381). 

89 FR 48437

FWS initiated five-year status reviews under the ESA for 59 animal and plant species.

89 FR 48034

FWS determined endangered species status under the ESA for the Guadalupe fatmucket, Texas fatmucket, Guadalupe orb, Texas pimpleback, Balcones spike, and false spike, determined threatened species status for the Texas fawnsfoot, and designated approximately 1,577.5 river miles in total as critical habitat for the seven species of freshwater mussels in central Texas. 

89 FR 47468

SIP Approval: Kentucky (revisions to geographical boundary description and attainment status designation for the Henderson-Webster 2010 primary sulfur dioxide nonattainment area).