Judgment of the Court (First Chamber) of 14 January 2021.#LB and Others v College van burgemeester en wethouders van de gemeente Echt-Susteren.#Request for a preliminary ruling from the Rechtbank Limburg.#Reference for a preliminary ruling – Aarhus Convention – Article 9(2) and (3) – Access to justice – No access to justice for the public other than the public concerned – Admissibility of the action subject to prior participation in the decision-making procedure.#Case C-826/18.