EPA Region 10 approved a modification to Alaska's municipal solid waste landfill program concerning research, development, and demonstration permit requirements.

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

EPA issued a final rule requiring monitoring and reporting of greenhouse gas (GHG) emissions from additional sources of fluorinated GHGs.

EPA promulgated new source performance standards and emission guidelines for sewage sludge incineration units located at wastewater treatment facilities.