December 27, 2010 – The Environmental Protection Agency will begin regulating greenhouse gas (GHG) emissions in January, with the implementation of new permitting rules. Large facilities that must obtain permits for other pollutants will be required to include greenhouse gases in their permit, if they increase GHG emissions by at least 75,000 tons per year. (That’s confusing – does that mean that if they are found to emit 75,000 tons to begin with, they need the permit? Or does it mean the EPA will wait a year to see if they’ve added 75,000 tons to their baseline emissions?) The GHG to be regulated are carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. Readers will recall that methane emissions from sources in nature have been on the increase due to global warming. In addition, the EPA will propose industry-specific GHG standards no later than December 2011. The industries most affected will be fossil-fuel power plants ...
Understanding the global-warming world: causes and ramifications.