Environmental Contamination: Many Uncertainties Affect the Progress of the Spring Valley Cleanup (GAO-02-556) Environmental Contamination: Corps Needs to Reassess Its Determinations That Many Former Defense Sites Do Not Need Cleanup (GAO-02-658) Military Munitions: DoD Needs to Develop a Comprehensive Approach for Cleaning Up Contaminated Sites (GAO-04-147) Continuing Questionable Reliance on Commercial Contracts to Demilitarize Excess Ammunition When Unused, Environmentally Friendly Capacity Exists at Government Facilities (GAO-04-427R) Defense Infrastructure: Environmental Cleanup of Former Naval Facilities on Vieques (GAO-07-552R)
