in TX they will not actually go through your books/notebooks to check... but if a proctor happens to see something written in pencil, they can kick you out. You've got 2 days...
Cut the spiral off your spiral-bound notebooks, get them copied, and put them in 3-ring binders. Depending on how much writing you have in the NCEES book, either pull it apart and make copies... or write over the notes in pen. I have heard that some people just go over the pencilled notes with a high-lighter, so it's obvious that they are not new... I don't know if that passes or not.
That said, I have never actually heard of someone getting kicked out for having pencilled notes... but it is in their rules, and they can do it if they want to.