R.M. Heskett Station

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R.M. Heskett Station has 12 groundwater monitoring wells, 12 of which have been polluted above federal advisory levels based on samples collected between February 02, 2016 and September 18, 2019. Groundwater at this site contains unsafe levels of sulfate, lithium, selenium, radium, arsenic and cobalt.

Site description

R.M. Heskett Station was a 115-MW coal fired power station and a gas fired turbine owned by MDU Resources Group. The plant was located along the Missouri River in Mandan, North Dakota in Morton County. It opened in 1954 and was retired in 2021. The CCR landfill, located northwest of the station, receives coal ash, asbestos waste, and ash from tire-derived fuel. R.M. Heskett Station is among the U.S. Environmental Protection Agency's list of potential damage cases, indicating that coal ash disposal at the site has potentially 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 about the R.M. Heskett Station, see EIP's 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
12 / 12
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. arsenic cobalt lithium radium selenium sulfate
Pollutants monitored and below guidelines
antimony barium beryllium boron cadmium chromium fluoride lead mercury molybdenum 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, October 20, 2022 03:28:53 PM EDT