EPA

Monday's change would loosen some of the requirements for cleaning up the waste streams from coal-fired power plants.

The EPA says Kinder Morgan and Dow Chemical Company/Dowell Schlumberger, Inc., helped clean up the pollution from their facilities.

Top California officials and environmental groups pledged legal action to stop the rollback.

Emissions standards are closely linked with fuel economy requirements because vehicles pollute less if they burn fewer gallons of fuel.

Wyoming is the nation's leading coal-producing state.

Wheeler says the administration's repeal will lead investors to put money into more coal plants.

Environmental groups promise court challenges to both rollbacks.

Maverik has 10 days to appeal the complaint.

Long-term environmental impacts from the spill are unknown.

The spill occurred at just south of Main Street in Lander.