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 October 12, 2017. Groundwater at this site contains unsafe levels of lithium.Site description
Apache Station is a 408 MW facility located in Sulphur Springs Valley in Arizona. The station is owned and operated by the Arizona Electric Power Cooperative. Its two coal units became operational in 1979. One of the coal units will be switched to gas in 2018 to comply with EPA's regional haze regulations. Apache Station handles coal ash in four different ash ponds, 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.
For more information on Coal Ash in Arizona, visit Earthjustice's Fact sheet, Coal Ash in Arizona.