EPA proposed to defer the reporting date of certain data elements for emission equations under the Mandatory Greenhouse Gas Reporting Rule for three years; see above for direct final rule.

SIP Proposal: Ohio (VOC rule).

SIP Proposal: Nebraska (PSD program and GHG construction permit regulations).

SIP Proposal: Illinois (NOx waiver request for the Chicago-Gary-Lake County, Illinois-Indiana, and St. Louis, Missouri-Illinois, eight-hour ozone nonattainment areas).

EPA announced the release of the draft report titled, Aquatic Ecosystems, Water Quality, and Global Change: Challenges of Conducting Multi-Stressor Vulnerability Assessments, for public comment.

EPA announced the availability of the draft document, The Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2009.

EPA and the National Highway Traffic Safety Administration issued a supplemental notice of intent on their joint proposed rulemaking to reduce GHG emissions of light-duty vehicles for model years 2017-2025.

EPA finalized minimum requirements under the SDWA for underground injection of carbon dioxide for the purpose of geologic sequestration.

SIP Withdrawal: Texas (emissions banking and trading of allowances).

SIP Approval: Wisconsin (attainment of the 1997 eight-hour ozone NAAQS for the Milwaukee-Racine and Sheboygan, Wisconsin, nonattainment areas).