Are methane leaks a concern?
• Leaks of methane from coal seams or other geological formations to the surface can occur naturally from shallow, open, porous gas-bearing formations – with or without CBM development. Shallow formations are not likely to be targeted for CBM production if they have leaked their methane to the surface. • ERCB regulations require properly maintained well bores with cemented steel casings, which should not leak methane into the atmosphere. • CBM wells operate at generally lower rates and pressures than conventional natural gas; therefore, the possibility of leaks is low.
