Day 1 (Monday) - Preparation, demolition & debris removal

Matt & Jose got most of the demo done today and carted off the debris.

1. The shower tiles had been mounted directly on drywall (not backer board) which I'm told is/was not good practice in OR (& doesn't bode well for the other showers in the house if they're used more often and/or not wiped down). There's some dry rot in the studs. The shower mud pan had held, though, & there seems to not be water or dry rot in the shower floor. 
2. The steel/wax ring that the toilet was mounted on has been leaking; you can see water discoloration 2-3 ft out. The brown stuff forcing its way up through the linoleum seams (that I had always imagined was some kind of oogy chemical reaction) was just wet bits of particle board. 
3. Mostly the subfloor looks ok 4) the sistered studs at the NW corner of the shower don't appear to be load-bearing so they can come out, allowing a half-wall with glass above for a more spacious feeling.
4. Surprisingly, when the floor was removed, there's a register-sized hole in the subfloor to the left of the heat register.
5. Pentalquartz is mostly not available in honed anymore, so back to polished Botticino for the counter-top.

Net net - There's some water damage, as expected, but not as much as feared.  Shouldn't cost too much to repair.