“…CBM occurs in close association with coal, but has the potential to be less ecologically intrusive to extract, and emits fewer air pollutants when burned (Logan and Chandler, 1998;Lennon, 2006). More than 20 trillion cubic meters of CBM reserves are conservatively estimated for the conterminous United States, and perhaps three trillion cubic meters being economically recoverable (Tyler et al, 1995;Montgomery, 1999). There has been a significant increase in CBM development in Wyoming, Colorado, and New Mexico (Rice et al, 2000) as a result of large monetary returns, increased demand for energy from consumers, and technological advancements in CBM extraction methods.…”