April 19, 2014 Updated: April 19, 2014 at 4:08 pm
SALT LAKE CITY — The Sierra Club has branded a geological formation that includes portions of Utah, Colorado and Wyoming as one of six "climate disrupter" regions in the country due to its potential for major fossil fuel development.
The environmental organization, in a report titled "Dirty Fuels, Clean Futures," says tar sands and shale oil development in the Green River Formation would eclipse any progress made by the Obama administration's strict new fuel efficiency standards for vehicles.
The Deseret News reports the group maintains developing just 10 percent of the shale oil in the three states would result in 48 billion tons of carbon dioxide — eight times more than would be saved by the new fuel standards.
Companies say the report includes inaccuracies and mischaracterizations about the shale oil industry.