The Woodbury Chemical Site is in Commerce City, a northern suburb of Denver, Colorado, and neighbors a primarily industrial area which includes automobile salvage yards and a petroleum refinery. From the 1950s to 1971, the Woodbury Chemical Company operated a pesticide formulation facility which was destroyed by fire in 1965 but was subsequently rebuilt. Contaminated rubble and debris from the fire was disposed of on a 2.2-acre vacant lot east of the Woodbury facility. During a 1985 remedial investigation of the 2.2-acre lot, EPA identified high levels of pesticides and metals in surface and subsurface soils. As a result of the discovery of additional contamination, EPA determined it would be more cost effective to simultaneously implement the cleanup activities at the 2.2-acre lot, the Woodbury chemical facility, and adjacent properties. The selected remedial action addressed in the Record of Decision (ROD) incorporates and builds upon the 1985 ROD. The primary contaminants of concern affecting the soil are VOCs including PCE and TCE; other organics including pesticides; and metals including arsenic.