There is no mechanism regarding decontamination of orphan sites, however, and no financial means exists for the government to take such action. Environmental authorities have made an inventory of publicly owned sites contaminated by pesticides, but no remediation has yet taken place due to a lack of funding (Chapter 5). Law 491 of 1999 requires projects requiring licences (i.e. the largest ones, with the highest environmental risks) to take out insurance covering environmental damage.