New U.S. Environmental Protection Agency proposed rules would cut methane emissions sharply but oil and gas industry groups contend they would put new requirements on oil and gas companies.

EPA says that the proposal, released on Aug. 18, would trim methane emissions from oil and gas facilities by 40% to 45% from 2012 levels by 2025. Energy organizations contend that the regulations would be costly and duplicate pollution-reduction efforts that their firms already have under way.