Can be found: Once in the Flight Lounge of the Ishimura go through the left door, that is blocked by cargo boxes. The log is right in front of the entrance to the bathroom.
I don't know who the hell needs a whole roll of toilet paper to wipe their ass, but I'm gonna kick their ass if I ever find them. This is the 5th week in a row that some jackass has clogged the toilets in here. We're in space for crying out loud, if this plumbing gets jacked, someone has to space walk and get a helmet full of crap to clean it out. KNOCK IT OFF.