-Cleaning (Completed 10 April 2012) Terry and crew *Note-ML waived second cleaning. Terry S. et al reported that the chamber was very clean when they did first cleaning. -Door removal (Completed 10 April 2012) Apollo -Retrieve witness plates(Completed 10 April 2012) Travis and Jodi *Note-These five plates were put in place just before BSC8 was closed up and pumped down. Locations: #1-GV1 nozzle=Witness plate 5 (6 particles on whole plate) #2-GV3 bellows convolution=Witness plate 4 (11 particles on whole plate) #3-YBM bellows convolution=Witness plate 3 (8 particles on whole plate) #4-Face of quad optic/ACB face=Witness plate 2 (5 particles on whole plate) #5-Center of BSC floor=Witness plate 1 (8 particles on whole plate) They should give us some idea of the quantity and quality of particulate that gets moved around during one pump down/venting cycle. -ACB swing back (10 April 2012)Thomas and Travis -Install BSC repair arm, 5-axis table, and elevator(Completed 10 April 2012) Apollo, CIT-Buckland and Anderson -Quad implementation ring and hardware in staging room (10 April 2012) Jodi