Hanford Final --- SL-639 for Grout waste options!!SL-639 finalized as baseline based on 2017 Grout waste report. There are multiple "in-process" flow sheets for glass and grout waste forms. You run your batch through the correct process depending on the toxicity and or if you want on-site or off-site disposal, etc., etc.. Final report lists for ground water Technetcium at either 92% or 99% levels, then there are certin technology routes. The 2017 report is used as final baseline. In that report, SL for Tc is listed in more than one possible waste path. In the least, they will still need "best alternative" back-ups and they talk of the need to stockpile. ------ SL-639 has made it to the prom !!!!