The 48-acre Cedar Chemical Corporation site is located in West Helena, Arkansas. The site is within Helena-West Helena Industrial Park and includes six former production units, support facilities and an office. Operations began at the site in 1970 and included dinoseb production. From 1971 to 2002, manufacturing of agricultural and organic chemicals under various owners and operators took place. Operations contaminated soil, sediment, surface water and groundwater. EPA is working to identify potentially responsible parties (PRPs) for the site. Site investigations are ongoing.