Lewis and Clark Station has 9 groundwater monitoring wells, 7 of which have been polluted above federal advisory levels based on samples collected between March 30, 2016 and October 03, 2017. Groundwater at this site contains unsafe levels of sulfate, selenium, boron, molybdenum, lithium, cobalt, fluoride and radium.Site description
Montana-Dakota Utilities’ Lewis & Clark Station is located in Richland County, along the banks of the Yellowstone River. Plant Lewis and Clark is began operations in 1958 with a singular, coal-fired unit still in operation today. The 88-MW unit is scheduled to be retired and replaced by a gas fired generator by 2020. This station utilizes a Scrubber Pond and Temporary Storage Area for its coal ash residuals, which are regulated under the CCR rule. You can find the industry reported data here.
For more information on Lewis & Clark Station, see EIP’s 2019 National Coal Ash Report, Coal’s Poisonous Legacy .