Apache Station

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Apache Station has 8 groundwater monitoring wells, 1 of which have been polluted above federal advisory levels based on samples collected between April 13, 2016 and September 06, 2019. Groundwater at this site contains unsafe levels of lithium.

Site description

Apache Station is a 625-MW facility located in Sulphur Springs Valley, Arizona in Cochise County. The station is owned and operated by the Arizona Electric Power Cooperative (AEPCO), which began operating in 1979. It has three units, two that burn natural gas and one that can burn either coal or natural gas (or both in combination). Up until 2017, both the second and third units burned coal solely. Apache Station handles coal ash in four different ash ponds regulated under the CCR rule, a coal pile retention basin, a cooling tower blowdown pond, an evaporation pond, a low volume wastewater pond, and two scrubber ponds. Seven of its coal ash surface impoundments are on the EPA's 2009 list of high hazard potential sites. Nine of the ponds are lined.

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

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
1 / 8
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. lithium
Pollutants monitored and below guidelines
antimony arsenic barium beryllium boron cadmium chromium cobalt fluoride lead 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 Thursday, October 13, 2022 10:47:53 AM EDT