2006 Ivory Coast toxic waste dump then released and charges were dropped against them. Further prosecutions against Ivorian citizens not employed by Trafigura continued. On 6 December 2006, an independent inquiry launched by the City of Amsterdam concluded that the city was negligent when they allowed Trafigura to take waste back on board the "Probo Koala" in Amsterdam in July. Part of the "Probo" cargo was offloaded with the intent to have it processed with an Amsterdam waste processing company but when this turned out too expensive Trafigura took it back. The responsible local civil servants were reportedly unaware of existing Dutch environmental laws that would
Toxic waste over the siting of the facilities, and authorized the use of force if needed. In the aftermath of the Warren County protests, the 1984 Federal Hazardous and Solid Waste Amendments to the Resource Conservation and Recovery Act focused on waste minimization and phasing out land disposal of hazardous waste as well as corrective action for releases of hazardous materials. Other measures included in the 1984 amendments included increased enforcement authority for EPA, more stringent hazardous waste management standards, and a comprehensive underground storage tank program. The disposal of toxic waste continues to be a source of conflict in the U.S.