Dominion Virginia Power will close all of the ash ponds at its Virginia power stations in compliance with standards established by the Virginia Department of Environmental Quality and the Environmental Protection Agency's Coal Combustion Residuals rules. The company will close ponds at four locations in Virginia: Bremo Power Station in Fluvanna County, Chesapeake Energy Center in Chesapeake, Chesterfield Power Station in Chesterfield County, and Possum Point Power Station in Prince William County.