Was able to open GV5 and leak test the gate annulus piping joints on GV6 today -> 1 of 5 CFF was found to be leaking.  


Volume = Y1, Y-mid, Y2, YBM, XBM, HAM2-3, BSC1,2,3,7,8 being pumped by CP1, CP2, YBM MTP (backed by leak detector), CP3, CP4 and IP9.  
Helium background 6.5x10-8 torr*L/sec -> 1.33 CFF on North side of GV6 climbed steadily from background to 1.5x10-7 torr*L/sec beginning 18 seconds after filling bag until purged with air at the 200 second mark.  Demonstration was repeated after signal fell back to near the original starting value.