On June 7^th – June 8^th the 4^th Core Group Meeting and Working Group (WG1, WG2, WG3, WG4, WG5, WG6) Meetings of the CA20138 will be held at the Myconian Imperial Resort in the island of Mykonos under the framework of the Ninth International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2022) and SECOTOX Conference. The Core Group of the Action will focus on the workplan of the first grant period (01/11/2021-31/10/2022), the coordination of the several Working Groups, the dissemination activities and next steps. Working Group Meetings will report on the progress of activities taking place within each WG, the internal communication among the Working Groups, the expected results, the possible products and dissemination/exploitation plans.