Xcel plans Colorado coal ash cleanup as toxins seep into groundwater
BOULDER — When Xcel Energy stopped burning coal at its Valmont Power Station in 2017, it left 1.6 million tons […]
BOULDER — When Xcel Energy stopped burning coal at its Valmont Power Station in 2017, it left 1.6 million tons […]
More than 8,000 metro Denver customers were without power Tuesday night as high winds, rain and snow swept across the