each alternative process to a level of maturity such that an informed comparison and evaluation can be made among all alternatives. Such an analysis must consider whether each alternative could be successfully implemented and what potential barriers might remain to be overcome. The proposed R&D must be focused on the development pathway and include appropriate decision points. Pilot scale demonstrations, including adequate hot operations using actual representative radioactive waste from the tanks, are critically important for process evaluation. Two economic as well as technical issues that will require constant attention as the R&D program proceeds are minimizing the risk of process failure and careful analyses of opportunities to continue use of existing facilities and resources for research and operations. Further, as noted above, no demonstration or accommodation is complete without consideration of the total waste management system. Whereas SRS schedules may be undergoing change at any point in time, it is necessary that proposed evaluation, R&D, and demonstration schedules correspond as well as possible with the time requirements imposed by SRS for implementation of the waste treatment.