This report provides a status of the work to assess the information needs for evaluating the safety of defense waste repository considering both the waste forms to be disposed and the repository concepts being considered. This includes the FY16 progress toward: (1) developing a preliminary D-Rep inventory for engineering/design analyses; (2) assessing the major differences of this inventory relative to that in other analyzed repository systems and the potential impacts to disposal concepts considered; (3) designing and developing an online waste library (OWL) to manage the information of the superset of wastes and their waste forms (including CSNF if desired eventually); and (4) constraining post-closure waste form degradation performance for safety assessments.