People kayak in the Animas River near Durango, Colo., in water colored from a mine waste spill

Officials Demand Answers After The EPA Spills 3 Million Gallons Of Mine Waste In Colorado

The 3 million gallons of mine waste included high concentrations of arsenic, lead and other heavy metals. Workers with the EPA claim to have accidentally unleashed the spill as they inspected the abandoned mine site.