EPA proposed to allow refiners and laboratories to use an alternative test method for olefin content in gasoline.

SIP Proposal: California (VOC emissions for the Antelope Valley air quality management district and the Placer County, Santa Barbara, and Ventura County air pollution control districts; see above for direct final rule)

SIP Approval: Maryland (VOC emissions)

EPA amended NESHAPs for gasoline distribution bulk terminals, bulk plants, and pipeline and gasoline-dispensing facilities.

EPA determined that the Louisville metro air pollution control district failed to submit an SIP that applies PSD requirements to GHG-emitting sources by January 1, 2011.

EPA issued a final rule requiring GHG monitoring and reporting from facilities that conduct geologic sequestration of carbon dioxide.

EPA proposed to withdraw certain aquatic life water quality criteria for waters of the Great Lakes in Wisconsin.

EPA proposed revisions to the unregulated contaminant monitoring regulation for public water systems.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay U.S. response costs incurred at the Puckett Smelter Superfund site in Mountainboro, Alabama.

EPA denied a petition for reconsideration of its amendments to the Renewable Fuel Standard Program.