Numerous U.S. domestic and international initiatives have increased focus on GHG emissions reductions. In the U.S., the National Climate Task Force has set groundbreaking goals to reduce domestic GHG emissions 50-52% below 2005 levels by 2030. These eorts have focused attention on reducing methane emissions; methane is the second most common greenhouse gas after carbon dioxide (CO 2 ), and has a global warming potential (GWP) 86 times that of CO 2 on a 20 year basis.