Vented Y-mid after lunch today.  GV10 annulus ion pump current ramped up predictably as a result of the known leak between the outer O-ring and the annulus space.  Had to valve in aux. pump cart to help GV10 annulus ion pump match leak rate.  This signal is on scale at 10mA on local controller but "red" on CDS.  This will probably go "green" on CDS over the next day or so.  Note: GV10 annulus leak has never shown to communicate to PT-244.  Nevertheless we will utilize the aux. pump on this annulus during the aLIGO BSC chamber move/retrofit.