Valmont Station

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Valmont Station has 11 groundwater monitoring wells, 10 of which have been polluted above federal advisory levels based on samples collected between December 08, 2015 and September 14, 2017. Groundwater at this site contains unsafe levels of sulfate, lithium, boron, cobalt, molybdenum, arsenic, selenium, antimony and lead.

Site description

Valmont Station is a 192 MW facility owned and operated by Xcel Energy. The station is located in Boulder, Colorado. Xcel Energy reported the station stopped burning coal on March 3, 2017 and was gas-fired until it was fully retired on September 30, 2017. Valmont Station's two bottom ash impoundments, 3A and 3B, will be closed in 2018. The waste from this closure will be moved to the landfill, which will then be closed. The landfill is unlined and occupies approximately 60 acres of land. The impoundments are each approximately 680 feet long by 65 feet wide and 20 feet deep.

For more information on Valmont Station, see EIP's report, America's Top Fifty Power Plant Mercury Polluters.

For more information on Colorado coal ash, see the Clean Water Fund's report, Coal Ash, and Earthjustice's fact sheet, Colorado Coal Ash Disposal in Ponds and Landfills.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
10 / 11
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. antimony arsenic boron cobalt lead lithium molybdenum selenium sulfate
Pollutants monitored and below guidelines
barium beryllium cadmium chromium fluoride mercury radium 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 04, 2018 01:57:38 PM EDT