Merrimack Generating Station

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Merrimack Generating Station has 5 groundwater monitoring wells, 0 of which have been polluted above federal advisory levels based on samples collected between February 23, 2016 and November 15, 2019. Groundwater at this site contains unsafe levels of No exceedances.

Site description

Granite Shore Power’s Merrimack Generating Station is in Merrimack County, near the Merrimack River. The plant has two coal-fired units, built in 1960 and 1968 respectively, and two kerosene-fueled units, with a total capacity of 482 MW. The Station primarily operates during peak demand, especially during winter months. The adjacent Coal Ash Landfill began operating in 1978. The 5.5-acre landfill is regulated under the CCR rule.

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

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
0 / 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
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Pollutants monitored and below guidelines
antimony arsenic barium beryllium boron cadmium chromium cobalt fluoride lead 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, November 02, 2022 10:17:26 AM EDT