(15)When, on imperative grounds of urgency, in particular where a risk to human health exists, the normal time-limits for the regulatory procedure with scrutiny cannot be complied with, the Commission should be able to apply the urgency procedure provided for in Article 5a(6) of Decision 1999/468/EC for the adoption of amendments of the list of extraction solvents which may be used during the processing of the raw materials, of foodstuffs, of food components or of food ingredients, and the specification of their conditions of use and maximum residue limits, and for the adoption of specific purity criteria for extraction solvents, as well as for the adoption of amendments to this Directive when it is established that the use in foodstuffs of any substance listed in Annex I or the level of one or more of the components referred to in Article 3 contained in such substances might endanger human health although it complies with the conditions laid down in this Directive.