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The paper deals with the question of whether it is permissible to relocate the dredged material from the seabed from the port of Koper to another location within the territorial sea of the Republic of Slovenia. At first glance, the simple issue is considered from the point of view of the legal permissibility of such conduct, recognizing that it is a highly multidisciplinary issue. Aspects of international law, EU law, Slovenian law, and Italian law are discussed. The latter because Italy faces the same problems of dumping or relocation of dredged material in the Gulf of Trieste basin as Slovenia, unlike Croatia which does not have major ports in this area. The Slovenian and Italian regulation and experiences may be of interest to Croatia for its local ports or major ports in other parts of Adriatic.

Herkömmliche Deichbaumaterialien, wie Mergel (Ostsee) oder Klei (Nordsee), werden zunehmend knapp und müssen für Neubauten und die Ertüchtigung von Landesschutzdeichen häufig unter erheblichen Eingriffen in die Natur gewonnen und über größere Strecken transportiert werden. (Nass‐)Baggergut fällt dagegen regelmäßig in großen Mengen bei der Unterhaltung von Häfen und Wasserstraßen an und kann nach materialabhängiger Aufbereitung abfallrechtlich verwertet werden – auch als Ersatzbaustoff im Deichbau. Im Projekt DredgDikes wurden über einen Zeitraum von fast fünf Jahren verschiedene Chargen Baggergut auf ihre Eignung als Deichersatzbaustoff untersucht. Dazu wurde ein umfangreiches Laborprogramm bearbeitet und zwei Forschungsdeiche in Rostock und Umgebung mit Baggergut hergestellt, an denen eine Vielzahl an Feldversuchen durchgeführt wurde. Diese Forschungsbauwerke bleiben auch weiterhin instrumentiert, um langfristige Erkenntnisse zu gewinnen. Als Ergebnis dieser Untersuchungen entstanden Empfehlungen für die Planung, die Herstellung und die Pflege von Deichen aus Baggergut sowie zum genehmigungsrechtlichen Umgang mit Baggergut im Deichbau und zum notwendigen Untersuchungsumfang, die es zukünftig ermöglichen, geeignete Materialien auszuwählen und zum Einsatz zu bringen. Recommendations for the recovery of dredged material in dike construction. Conventional dike construction materials such as boulder clay/marl (Baltic) or marsh clay (North Sea) are becoming increasingly scarce. They are often mined in environmentally sensitive areas and transported over considerable distances to the site of dike (re)construction. On the other hand large quantities of dredged material regularly incur during the maintenance of ports and waterways, which can be recovered after a material dependent treatment according to waste legislation – e. g. as replacement construction material for dikes. In the project DredgDikes over a period of almost five years, several batches of dredged material were tested for their suitability as replacement dike construction material. For this purpose, an extensive laboratory program was performed and two research dikes in Rostock and the surrounding area were built with dredged materials, where a variety of field tests were carried out. These research installations shall stay instrumented to attract long‐term findings. As a result, recommendations were developed for the design, construction and maintenance of dikes made with dredged materials. Also, recommendations regarding the legal handling of dredged material in the context of dikes and the necessary scope of investigation could be derived. These recommendations will enable selecting suitable materials and bringing them to use. [ABSTRACT FROM AUTHOR]

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