mediation within the period specified in subparagraph (D), except that nothing in this paragraph shall limit the ability of a court to order preliminary injunctive relief to protect health and safety or to otherwise prevent irreparable harm. (D) 90-day limit The Federal Mediation and Conciliation Service may conduct mediation or other nonbinding dispute resolution activities for a period not to exceed 90 days beginning on the date on which the Federal Mediation and Conciliation Service receives a request for assistance under subparagraph (B) unless the parties agree to an extension of such period. (E) Authorization of appropriations (i) In general Subject to clause (ii), there is authorized to be appropriated to the Federal Mediation and Conciliation Service, such sums as may be necessary for each fiscal year to carry out this subparagraph. (ii) Mediation Notwithstanding any other provision of law, the Director of the Federal Mediation and Conciliation Service is authorized— (I) to conduct the mediation or other dispute resolution activities from any other account containing amounts available to the Director