Possum Point Power Station has 17 groundwater monitoring wells, 7 of which have been polluted above federal advisory levels based on samples collected between April 12, 2010 and December 17, 2014. Groundwater at this site contains unsafe levels of manganese, nickel, cadmium and arsenic.Site description
Possum Point Power Station is a natural gas and oil plant owned and operated by Dominion Virginia Power (Dominion), located about 25 miles south of Washington, DC on the Potomac River and Quantico Creek. The plant has four generation units; two are natural gas fired, one is oil fired, and the last is a dual fired combined-cycle unit. Units 3 and 4 burned coal from 1955 through 2003, when they converted to burn natural gas. While the plant no longer burns coal, the site's five old ash ponds still contain an estimated 3.7 million cubic yards of coal ash and millions of gallons of contaminated water. According to its websites, Dominion plans to consolidate the five ash ponds into one, which it will close and cap in place. Dominion began draining water from the ponds to Quantico Creek in May 2016.