Environmental engineers from different organizations work in interdisciplinary projects having the need of information exchange. In particular, a collaborative environment with personalized access to information is needed, which supports strongly varying information needs of the users. This scenario is not fully supported by existing systems. For example, content management systems do not support personalized access to content. Social bookmarking systems are not sufficiently specific in user groups, thus, they miss context information of the bookmarks and introduce imprecision and noise. In this paper we propose to combine a collaborative content management system (wiki) with the social bookmarking idea. To improve the reuse of bookmarks, we represent additional context information in the form of structured tags.