Sioux Energy Center has 29 groundwater monitoring wells, 15 of which have been polluted above federal advisory levels based on samples collected between March 16, 2016 and November 15, 2017. Groundwater at this site contains unsafe levels of molybdenum, boron, sulfate, lithium and cobalt.Site description
Ameren Energy Company’s Sioux Energy Center is located in St. Charles County, MO along the banks of the Mississippi River. Sioux began operations in 1967 and has a generating capacity of 1,099 MW. Sioux has been scheduled to be converted to natural gas by 2033. Plant Sioux’s surface impoundments, SCPB, SCPC, SCPA and SCL4A, are all regulated under the CCR rule. You can find the industry-reported data here. For more information on Sioux Energy Center, see EIP’s 2019 National Coal Ash Report.