The purpose of this chapter is to summarise the issues considered in those appendices, drawing comparisons between management strategies for the two waste types. The section concludes by describing some opportunities and challenges for future management of these two waste types. However, there is a fundamental and essential similarity: both radioactive and hazardous wastes have the potential, if not managed appropriately, to cause environmental harm and to damage human health. More details are presented in Sections Al.l and A2.1.1. In late November 2008, after the text of this document had been prepared, the IAEA published a new Draft Safety Guide (DS390), in which it proposes six classes of radioactive waste.