Four Corners Power Plant

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Four Corners Power Plant has 26 groundwater monitoring wells, 26 of which have been polluted above federal advisory levels based on samples collected between November 04, 2015 and November 30, 2017. Groundwater at this site contains unsafe levels of sulfate, lithium, boron, fluoride, cobalt, selenium, molybdenum, radium, arsenic, lead, thallium, beryllium, cadmium and chromium.

Site description

Arizona Public Service Company’s Four Corners Generating Station is located in San Juan County, NM, on the banks of the man-made Morgan Lake. Plant Four Corners began operations in 1963 and now operates two of five coal-fired units that combine to produce 1636 MW. After several years of lawsuits concerning both air and groundwater pollution, Plant Four Corners retired the oldest three of the coal-fired units in 2013. The Four Corners Generating Station is planning to fully retire all coal-fired unit by 2031. Four Corners Generating Station operates their Multiunit 1 landfill, URS pond and CWT Pond, which are all regulated under the CCR-rule. You can find the industry reported data here. For more information on the Four Corners Generating Station, see EIP’s 2019 National Coal Ash Report: Coal’s Poisonous Legacy.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
26 / 26
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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 beryllium boron cadmium chromium cobalt fluoride lead lithium molybdenum radium selenium sulfate thallium
Pollutants monitored and below guidelines
antimony barium mercury
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, July 17, 2019 10:41:27 AM EDT