Since September 2008 all statutory MRLs have been set on an EC-wide basis under Regulation 396/2005. For further information on this Regulation please follow this link. Proposals to set, modify or delete MRLs in Regulation 396/2005 are now under consideration. These proposals are based on EFSA Opinions and are subject to votes in the Standing Committee. Raised levels need only one vote, whereas lowered levels require two votes. In the latter case, proposals are notified to the World Trade Organisation (WTO) following the first indicative vote to allow third countries to raise any points of difficulty. Once all concerns have been addressed a second formal vote is taken by the Committee, after which the proposal is adopted provided the necessary majority of member states is secured and following scrutiny by the European Parliament and Council.
http://www.pesticides.gov.uk/food_safety.asp?id=546