We continued inspection and wipe down in BSC-7. Three additional instances of the mystery substance were found and removed: these areas were also FTIR sampled. The flooring was removed and covered (just in case we need it for something after re-installing the dome) with C-3 and placed in a cleanroom. With the floor removed, we were able to get half of the chamber bottom wiped down and FTIR samples taken. The C-3 cover on the dome was removed in preparation for work tomorrow. Carolyn worked on paperwork for the FTIR samples and on modifying the spreadsheets for record-keeping in prep for BSC-8.