(Travis, Jordan, Randy, Tony, Gerardo)

RGA scan taken of the X-End vacuum volume with GV20 hard closed.  GV20 was hard closed and LOTOed.  All metal valve was opened for GV20 gate annulus.
Purge air was measured, dp at -42.4 ^oC.  Large ion pump and RGA were isolated.  Then the vacuum envelope was vented, it appears as if the piranni gauge at BSC9 is out of calibration, it does have a larger than atmosphere number, 981 Torr at atmosphere, not right.
We proceeded to vent the BSC9 annulus with nitrogen gas.  Soon after the +Y side door was convinced to let go of the flange, at first the outer O-ring was stuck at around 1 O'clock , maybe 3 inches long, but let go after a few minutes.  We left the system with purge air going.