Calaveras Power Station

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Calaveras Power Station has 21 groundwater monitoring wells, 20 of which have been polluted above federal advisory levels based on samples collected between December 06, 2016 and October 23, 2019. Groundwater at this site contains unsafe levels of lithium, cobalt, sulfate, radium, boron, selenium, beryllium, thallium, cadmium, chromium, lead, mercury, molybdenum, arsenic and fluoride.

Site description

The Calaveras Power Station, operational since 1972, is owned and operated by CPS Energy. The station includes the J.T. Deely Power Plant and the J.K. Spruce Power Plant. CPS Energy decommissioned the J.T. Deely Power Plant in late 2018. CPS Energy has four disposal areas regulated under the federal coal ash rule: Sludge Recycle Holding Ponds, Bottom Ash Ponds, Evaporation Pond, and the Fly Ash Landfill. These disposal areas occupy 3.5, 13, 4.5, and 21.8 acres of land, respectively. All of the power station's disposal areas are lined. Calaveras Power Station's BA Ponds, SRH Pond, Evaporation Pond and FA Landfill are regulated under the CCR-rule.

You can find the industry reported data here. For more information about Calaveras Power Station, see EIP's reports, America's Top Power Plant Toxic Air Polluters, Groundwater Contamination from Texas Coal Ash Dumps and EIP's 2019 National Coal Ash Report Coal's Poisonous Legacy.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
20 / 21
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 beryllium boron cadmium chromium cobalt fluoride lead lithium mercury molybdenum radium selenium sulfate thallium
Pollutants monitored and below guidelines
antimony barium
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 Monday, October 17, 2022 05:04:48 PM EDT