IP3 and IP4 need to be pumped with pump cart prior to energizing them -> These two IPs haven't been energized since aLIGO de-install/install activities required that they be unbolted from the iLIGO output MC tube a few years ago -> IP3 was found to be < 1 torr, was assisted with the pump cart while energized initially and was able to match its own outgassing after ~30 mins -> IP4 was found to be >> 1 torr and will need prolonged pumping assistance