Greenhouse gas reporting rules start in 2010, including big dairies

Very large dairies, such as those often found in the West and Southwest, will be required to collect and report greenhouse gas (GHG) emission data starting January 1, 2010, according to the Final Mandatory Reporting of Greenhouse Gases Rule adopted September 22 by the U.S. Environmental Protection Agency.

Under the rule, facilities whose GHG emissions total 25,000 metric tons or more per year must submit annual reports about them to EPA. Gases specifically covered are carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride, and other fluorinated gases including nitrogen trifluoride and hydrofluorinated ethers.

EPA says 25,000 metric tons is approximately equivalent to the annual exhaust emissions from 4,600 passenger vehicles. According to Paul Martin, director of Environmental Services for Western United Dairymen in California, early examination of the new program indicates that 25,000 metric tons is also approximately equal to the greenhouse gases produced by 3,200 mature cows.

Emission data must be gathered during calendar year 2010 and submitted to the agency in 2011. The new reporting system will provide a better understanding of where GHGs are coming from, and help in the development of policies and programs to reduce emissions.