Portland Power Station/Bangor Ash Disposal Site

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Portland Power Station/Bangor Ash Disposal Site has 16 groundwater monitoring wells, 9 of which have been polluted above federal advisory levels based on samples collected between March 15, 2010 and January 18, 2016. Groundwater at this site contains unsafe levels of sulfate, manganese, boron and arsenic.

Site description

NRG's Portland Power Station is a diesel fuel burning plant and operates during peak energy usage only. The plant had previously operated as a 401 MW coal-fired power plant, beginning in 1958. In 2014, Portland Power Station stopped burning coal after it was directly linked to high emissions crossing into New Jersey and signed a consent decree with the Pennsylvania Department of Environmental Protection. Coal ash was disposed of at the Bangor Ash Disposal Site and in two residual waste impoundments located on-site.

The Bangor Ash Disposal Site is listed on the U.S. Environmental Protection Agency's list of potential damage cases, indicating that it has potentially polluted groundwater or surface water at levels which threaten human health and the environment. For more information about the Portland and Bangor sites, see EIP's report Out of Control.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
9 / 16
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 boron manganese sulfate
Pollutants monitored and below guidelines
ammonia barium beryllium cadmium chromium copper fluoride lead mercury nickel nitrate selenium silver
Pollutants not monitored
antimony, cobalt, cyanide, gross alpha particle, gross beta particle, hexavalent chromium, lithium, molybdenum, nitrite, radium, strontium, thallium, tritium, uranium

Facility last updated on Thursday, March 23, 2017 03:30:54 PM EDT