A survey was conducted on LCA (Life Cycle Analysis) impact categories where NoAW stakeholders expressed their preferences and justifications about the importance (represented as ranks) of these categories. The assessment of the resulting aggregating ranking with or without taking into account the potentially conflicting justifications is provided in this dataset. The survey was conducted on 31 participants from the European projects NoAW and Agrocycle consisting of both public and private stakeholders. They were asked to give a ranking of importance of 18 different impact categories along with their justification for this ranking. Files included in this dataset are: - Survey anonimized responses - JSON files with the encoding of stakeholders' justified preferences for 5 impact factors - Results of the votes before and after application of the argumentation method