Don, let us know what you find. I live in far north Austin off Parmer/Mopac so I'm definitely not the best source for Bastrop. My scanners do "control channel" scanning and I just wanted to point out that the 851.95 control channel for the Bastrop 007 site is not the primary one for Bastrop. Most of the traffic on that system are Austin/Travis Co spillover stuff like Austin Energy, and I'm hearing flooding related talkgroups on there tonight.
The 859.7125 control channel from Bastrop Simulcast is the system that has most all the Bastrop related Traffic. Sorry if I was confusing it earlier. and yes, both are P25.
Both of these sites are on the GATRRS page and are P25:
http://www.radioreference.com/apps/db/?sid=2
More used 1 40 (28) Bastrop Simulcast 854.03750 856.71250 857.71250a 857.76250a 858.71250a 858.93750 859.71250c
Less common: 1 007 Bastrop County 851.23750 851.95000c 852.23750 852.55000