The U.S. Environmental Protection Agency (EPA) is offering guidance and tools to help state and local air permitting authorities identify cost-effective pollution reduction options for greenhouse gases (GHGs) under the Clean Air Act. These tools are part what the EPA calls its “common sense approach” to GHG permitting of the largest emissions sources outlined in its tailoring rule issued in the spring.
The EPA recommends that permitting authorities use the best available control technology (BACT) process to look at all available emission reduction options for GHGs. After taking into account technical feasibility, cost and other economic, environmental and energy considerations, permitting authorities should narrow the options and select the best one, according to the EPA. The EPA anticipates that, in most cases, this process will show that the most cost effective way for industry to reduce GHG emissions will be through energy efficiency.
The guidance does not define or require a specific control option for a particular type of source, as BACT is determined on a case-by-case basis. Instead, the guidance and resources provide the basic information that permit writers and applicants need to address GHGs. The guidance also provides examples of how permitting requirements could apply.
In January 2011, industries that are large emitters of GHGs and are planning to build new facilities or make major modifications to existing ones, will work with permitting authorities to identify and implement BACT to minimize their GHGs. This includes the nation’s largest GHG emitters, such as power plants, refineries and cement production facilities. Emissions from small sources, such as farms and restaurants are not covered by these GHG permitting requirements.
To review the EPA”s pollution-reduction guidance, visit www.epa.gov/nsr/ghgpermitting.html.