Caledonia Ash Landfill

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Caledonia Ash Landfill has 18 groundwater monitoring wells, 9 of which have been polluted above federal advisory levels based on samples collected between January 25, 2010 and November 15, 2017. Groundwater at this site contains unsafe levels of molybdenum.

Site description

Columbia Energy Center is a 1023-MW coal-fired power station owned by Alliant Energy. The station began operating in 1975 and is located along the Wisconsin River in Pardeeville, Wisconsin. The station has four units regulated under the CCR rule: one surface impoundment called Primary Ash Pond and three landfills listed as COL Dry Ash Disposal Facility Module 1, 2 and 3. The Columbia Energy Center is listed among the U.S. EPA's proven damage cases, indicating that it has polluted groundwater or surface water at levels which threaten human health and the environment. You can find the industry-reported data here. For more information on the Columbia Energy Center, see EIP’s 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
9 / 18
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. molybdenum
Pollutants monitored and below guidelines
antimony arsenic barium beryllium boron cadmium chromium cobalt fluoride lead lithium mercury radium selenium sulfate thallium
Pollutants not monitored
ammonia, copper, cyanide, gross alpha particle, gross beta particle, hexavalent chromium, manganese, nickel, nitrate, nitrite, silver, strontium, tritium, uranium

Facility last updated on Thursday, June 27, 2019 11:49:08 AM EDT