(CBS4/AP) — The Navajo Nation reached a settlement in a lawsuit filed over the Gold King Mine spill. The spill took place in southwestern Colorado in 2015. Three million gallons of wastewater from the inactive Gold King Mine polluted rivers in Colorado …(CBS4/AP) — The Navajo Nation reached a settlement in a lawsuit filed over the Gold King Mine spill. The spill took place in southwestern Colorado in 2015. Three million gallons of wastewater from the inactive Gold King Mine polluted rivers in Colorado …