Shiras Steam Plant

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Shiras Steam Plant has 5 groundwater monitoring wells, 2 of which have been polluted above federal advisory levels based on samples collected between July 19, 2017 and October 17, 2019. Groundwater at this site contains unsafe levels of lead.

Site description

Marquette Board of Light & Power’s Shiras Steam Plant was a three-unit coal-fired power plant that was first online in 1967. The plant was located near Lake Superior in Marquette, Michigan with a total capacity of 77.5-MW. The facility was retired in June 2018. The Holding Pond located north of the station is regulated under the CCR rule. It is composed of 5 cells which are enclosed by steel sheet pile walls.

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

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
2 / 5
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. lead
Pollutants monitored and below guidelines
antimony arsenic barium beryllium boron cadmium chromium cobalt fluoride lithium mercury molybdenum 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 Wednesday, October 19, 2022 12:37:12 PM EDT