with Betsy:
This morning while the ITMy structure was out Betsy and I pulled a couple floorboards out of BSC1 to take FTIR tests of parts of the chamber that had previously failed FTIR (One on chamber floor nearly dead center of chamber, other just inside beamtube towards BSC8.) 
Before taking the FTIR tests, we took a FBI sample of the floor, then wiped down the whole floor with IPA soaked Vectra Alpha wipes. 
After the floor dried, we took an FTIR in the center and replaced the floor panels. 
Took other FTIR (in beamtube floor) and re-wiped floor panels before proceeding with rest of ITMy install.