The 2008 Act on Evaluating the Environmental Impact of Certain Plans and Programmes institutes a system of environmental assessments at the planning stage and transposes European Directive 2001/42/EC, which was supposed to be reflected in member states’ legislation before July 2004. It supplements other legal provisions in this area such as the 2003 Grand Ducal Regulation on assessing the environmental impact of certain public and private projects, the 2007 Act on Assessing the Impact of Road, Rail and Airport Infrastructure Projects on the Natural and Human Environment and the Grand Ducal Regulation of 2007 determining the contents, conditions and methods of conducting the impact study required for the consolidation of rural properties. The 2009 Act on Environmental Liability with Regard to the Prevention and Remedying of Environmental Damage establishes an environmental liability framework based on the polluter pays principle in order to prevent and repair environmental damage, and transposes European Directive 2004/35/EC into domestic law.