The United States Environmental Protection Agency has decided to remove Arnold Engineering Development Complex from consideration for the agency’s National Priorities List. Effective March 15, the EPA removed Arnold AFB from consideration for the list, which is a compilation of hazardous waste sites that are eligible for cleanup financed by the federal Superfund program. The complex was first proposed in 1994, when the EPA scored AEDC through its Hazard Ranking System, said Denny Timmons, AEDC’s Installation Restoration Program Manager of the civil engineering branch’s asset management section. For the past 18 years the Arnold AFB environmental staff has aggressively and proactively pursued investigation and cleanup of former disposal sites.