This report is an important collection of tools used in the framework of the Geneva Convention on Long-Range Transboundary Air Pollution (CLRTAP). Thus, it provides for example a scientific basis on the application of critical levels and loads, their interrelationships, and the consequences for abatement. After the transfer of the Coordination Center for Effects from the Netherlands to Germany this edition is published by the German Environment Agency (⁠UBA⁠). With this edition recent technical updates where transferred in the document. The changes of chapter 3 from the Ammonia-workshop decided 2023 have been incorperated.The information on backgrounddatabase (BGDB) (5.2) and the new receptor map were implemented in chapter 5.6.