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
Illegal dumping drywall, roofing shingles, lumber, brick, concrete, and siding. Other frequently dumped materials include automobile parts, household appliances, household waste, furniture, yard scraps, and medical waste. The reasons people illegally dump vary; however, research indicates that lack of legal waste disposal options is a primary factor. A shortage of legal disposal options drives demand for waste removal service, increasing prices. Studies also have found unit pricing, which involves charging a set price per bag of garbage thrown out, may contribute to illegal dumping. Although the intent of unit pricing is to encourage people to use other forms of waste disposal such