 The Air Force has been cleaning up 12 areas, under supervision by EPA, including landfills, a fire protection training area, spill sites, industrial areas and an explosive-ordnance disposal area.Remedies have included groundwater pump-and-treat systems, bio-dechlorination, soil excavation, landfill covers, and institutional controls (fences/signs).In 2007, in-place reductive treatment for groundwater cleanup replaced the pump-and-treat systems.