"A massive stream of wastewater tainted with hydrocarbons has been flowing into Utah from oil and gas mining on Colorado’s West Slope.

Evaporation ponds used to process the contaminated water in Grand County have released tons of toxic chemicals into the air since April 2008.

But the Colorado company running the 14-pond facility operated without a Utah air-quality permit for more than six years, public documents show, while providing officials faulty data that underreported its emissions and exaggerated the efficiency of its emission-control equipment."

Brian Maffly reports for the Salt Lake Tribune August 24, 2014. [2]