Low level alarms for mid X instrument air pressure, Kyle R. notified 09:32 Sheila D., Pablo H. and Kiwamu I. entering HAM1 to measure the beam profile of the reflected light from the PRM through the Faraday isolator 09:40 Cheryl V. going to the end X TMS lab 09:57 Safety review tour 10:29 Ace portable toilets onsite for maintenance 10:50 Betsy W. found the dust monitor at end X inside the electronics rack. She set the audible alarm limits and moved it into the clean room over ETMX 10:53 Sheila D., Pablo H. and Kiwamu I. done with the measurement in HAM1 11:26 Safety review tour has left the LVEA 12:37 Betsy W. getting parts from the rack by HAM2 12:43 Large dust spike reported by dust monitor at end X, nobody appeared to be in the VEA (see below) 13:01 Cheryl V. heading back from end X 13:29 Filiberto C. and Aaron S. working on cabling in middle high bay at end Y 13:49 Timing errors for end Y ISC, Aaron S. had powered down the IO chassis 15:47 Dave B. attempting to bring back the SEI, SUS and ISC frontends at end Y 15:53 Thomas V. done working on baffles 15:59 Justin B. transitioned the LVEA to laser safe (WP 4161) Kyle R. replaced the instrument air transducer at end X (WP 4160) Large spike in only > .3 micron particle counts measured in the clean room at end Y from 12:41 - 13:13. (see attached plot) Dust monitor is labeled 'S'. Calibration date: 8/9/13 Calibration due date: 8/9/14. Cause as of yet undetermined.