Dallman Station has 15 groundwater monitoring wells, 13 of which have been polluted above federal advisory levels based on samples collected between February 23, 2010 and August 01, 2019. Groundwater at this site contains unsafe levels of boron, arsenic, manganese, sulfate, lead, cadmium and cobalt.Site description
Dallman Station is a coal-fired power plant in Springfield, Illinois in Sangamon County that had a peak capacity. It is owned and operated by City Water, Light and Power (CWLP), a municipally owned utility in Springfield. The plant had 4 units, the first of which opened in 1968; the since retired Units 1-3 were built in the 1960s-1970s, while the currently only functioning Unit 4 was built in 2009. Units 1 and 2 were retired in 2020, while Unit 3 was retired earlier than planned in 2021, following irrecoverable damage from a storm. City Water, Light and Power operates two coal combustion residual (CCR) surface impoundments, regulated under the CCR rule, occupying approximately 70 acres of land just north of the Dallman power plant.