This leading monograph on European Environmental Law is now completely updated and revised. This book provides an in-depth analysis of important legal issues of European environmental law. What are the legal grounds for EU environmental policy and on what principles are directives and regulations based upon? To what extent precludes EU environmental regulation more stringent national environmental standards? What are the requirements the Court of Justice has imposed on the Member States implementing environmental directives? How and to what extent can European environmental law be relied upon and challenged before national courts and the European Courts? How do the Treaty rules on the internal market and undistorted competition interfere with national environmental policy? Answers to these and other questions can be found in this book.