The EPA is amending specific provisions in the Mandatory Reporting of Greenhouse Gases Rule to correct certain technical and editorial errors that have been identified since promulgation and to clarify certain provisions that have been the subject of questions from reporters. These final changes include additional information to clarify compliance obligations, correct data reporting elements so they more closely conform to the information used to perform calculations, and make other corrections and amendments. In addition, these final amendments allow a limited, one-time six month extension of the 2012 reporting deadline for facilities and suppliers that contain one or more source categories for which data collection began in 2011.