Joliet Generating Station No. 29

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Joliet Generating Station No. 29 has 11 groundwater monitoring wells, 7 of which have been polluted above federal advisory levels based on samples collected between December 06, 2010 and April 27, 2017. Groundwater at this site contains unsafe levels of manganese, cobalt, sulfate, antimony, nickel, cadmium and lead.

Site description

Midwest Generation's Joliet Generating Station No. 29 (Joliet 29) began operations in the 1960s in the town of Joliet, Illinois along the Des Plaines River. The power plant can generate up to 1,320 megawatts of electricity from coal. Midwest Generation operates three lined, active ash ponds on-site that occupy an area of approximately 10 acres, and the site also has unknown amounts of coal ash in abandoned above-ground disposal areas. As of 2009, seventeen potable and industrial use wells were located within 2,500 feet of the ash ponds.

In October 2012, Midwest Generation entered into a Compliance Commitment Agreement with the Illinois Environmental Protection Agency to address violations of groundwater standards at Joliet 29. Among other requirements imposed by the agreement, the site's three ash ponds are not to be used as permanent disposal facilities, one of the site's three ash ponds had to be re-lined, and Midwest Generation had to apply for and establish a Groundwater Management Zone at the site.

For more information about groundwater monitoring at coal waste disposal sites in Illinois, see the 2011 EIP and Prairie Rivers Network's report Illinois at Risk.

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. 29, see EIP's report, America's Top Power Plant Toxic Air Polluters.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
7 / 11
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No exceedances
One or more exeedances
No data available
Other designation
Well "halo" size corresponds to mean concentration. Please note that some wells may not be visible on the map due to overlapping locations.
Pollutants monitored and above guidelines
Tip: Click on a contaminant to view wells that have recorded exceedances. Click again to remove the filter. antimony cadmium cobalt lead manganese nickel sulfate
Pollutants monitored and below guidelines
arsenic barium beryllium boron chromium copper cyanide fluoride mercury nitrate nitrite selenium silver thallium
Pollutants not monitored
ammonia, gross alpha particle, gross beta particle, hexavalent chromium, lithium, molybdenum, radium, strontium, tritium, uranium

Facility last updated on Tuesday, October 23, 2018 03:34:02 PM EDT