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 11, 2017. Groundwater at this site contains unsafe levels of lithium, sulfate, cobalt, radium, boron, selenium, beryllium, thallium, cadmium, chromium, lead, mercury, molybdenum and arsenic.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.
For more information about Calaveras Power Station, see EIP's report,America's Top Power Plant Toxic Air Polluters.