(50)The effectiveness of this Directive and its aim of protecting public health in the context of the Union’s environment policy require that natural or legal persons, or where appropriate their duly constituted organisations, be able to rely on it in legal proceedings and that the national courts be able to take this Directive into consideration as an element of Union law in order, inter alia, to review decisions of a national authority where appropriate. In addition, according to settled case law of the Court of Justice of the European Union, under the principle of sincere cooperation laid down in Article 4(3) of the Treaty on European Union (TEU), it is for the courts of the Member States to ensure judicial protection of a person’s rights under Union law. Furthermore, Article 19(1) TEU requires Member States to provide remedies sufficient to ensure effective legal protection in the fields covered by Union law. This should be done in accordance with national rules, without depriving the provision on compensation of its effectiveness. In addition, in accordance with the Aarhus Convention, members of the public concerned are to have access to justice in order to contribute to the protection of the right to live in an environment which is adequate for personal health and well-being.