Joliet Generating Station No. 9 has 10 groundwater monitoring wells, 10 of which have been polluted above federal advisory levels based on samples collected between November 19, 2015 and November 22, 2017. Groundwater at this site contains unsafe levels of molybdenum, boron, lithium, arsenic, sulfate and radium.Site description
Joliet Generating Station No. 9 is was a 360 MW facility owned and operated by NRG Energy in Joliet, Illinois. The plant was located adjacent to the Des Plaines River. The plant was converted to natural gas in 2016 and closed in 2018. Joliet had four disposal areas: the Southeast Pond, Settling Pond, Main Quarry, and West Filled Area.Joliet Generating Station No. 9's combined on-site waste release with Joliet Generating Station No. 29 was reported as 994,910 pounds in 2011 according to the EPA's Toxic Release Inventory.
For more information about plant coal ash impoundments, visit the Prairie Rivers Network's Coal Ash Map.
For more information on Joliet Generating Station No. 9, see EIP's report, America's Top Power Plant Toxic Air Polluters.