Valmont Station has 26 groundwater monitoring wells, 22 of which have been polluted above federal advisory levels based on samples collected between December 08, 2015 and October 29, 2019. Groundwater at this site contains unsafe levels of lithium, sulfate, cobalt, boron, molybdenum, selenium, arsenic, lead, radium, antimony, chromium, fluoride, mercury and thallium.
Site descriptionValmont Station was a 192-MW facility with one coal-fired unit, owned and operated by Xcel Energy in Boulder, Colorado in Boulder County. Xcel Energy reported the station stopped burning coal on March 3, 2017 and was gas-fired until it was fully retired on September 30, 2017. Valmont Station's two bottom ash impoundments, 3A and 3B, will be closed in 2018. The waste from this closure will be moved to the landfill, which will then be closed. The landfill is unlined and occupies approximately 60 acres of land. The impoundments are each approximately 680 feet long by 65 feet wide and 20 feet deep.
You can find the industry-reported data here. For more information about the Springerville Generating Station, see EIP's 2019 National Coal Ash Report.