(Travis, Gerardo)
Both valves were opened today, and both of them were set to 55 psi to keep them open, both started going up around 45 psi.  No issues noted, aside from the usual hissing at GV6 thru the side opening.  Gate annulus was dumped into the ion pump without problems. Turbo pumps were isolated before opening valves, OMC tube, YBM and XBM, all turbo pumps remain on and they will remain on until pressure normalize/settles at the corner.  I isolated HAM6 turbo pump yesterday afternoon, and today I shut it off, aux-cart (SS-500) remains connected and on.
Note to all, HAM6-HAM5-HAM7 area remains a "clean" area, relay tube still out, installation is TBD.