Marion Power Plant

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Marion Power Plant has 9 groundwater monitoring wells, 1 of which have been polluted above federal advisory levels based on samples collected between March 24, 2010 and September 13, 2011. Groundwater at this site contains unsafe levels of boron and cadmium.

Site description

Southern Illinois Power Cooperative's Marion Power Plant is a 260-MW power plant first built in 1963 in Marion, Illinois on Lake of Egypt in Williamson County. The plant consists of a 120-MW coal-fired unit and two 70-MW natural gas or oil-powered units. An additional 173-MW coal-fired unit was retired in 2020. Coal fly ash, bottom ash, and flue gas desulfurization sludge have been placed in six unlined ponds, one unlined landfill, and one lined pond regulated by the CCR rule. Groundwater monitoring has been required near the landfill and ponds since 1994, and high concentrations of cadmium were first detected in 1997.

You can find the industry-reported data here. For more information about the Marion Power Plant, see EIP's 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
1 / 9
Wells not shown Locations for the following wells are unavailable:

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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. boron cadmium
Pollutants monitored and below guidelines
Pollutants not monitored
ammonia, antimony, arsenic, barium, beryllium, chromium, cobalt, copper, cyanide, fluoride, gross alpha particle, gross beta particle, hexavalent chromium, lead, lithium, manganese, mercury, molybdenum, nickel, nitrate, nitrite, radium, selenium, silver, strontium, thallium, tritium, uranium

Facility last updated on Monday, October 24, 2022 04:51:21 PM EDT