They use $20 chips for 60-120 or 80-160 limit games. Also used at Bellagio for 10-20 or 10-20-40 no limit games.
20-40 limit games use $5 chips and 40-80 limit games use $10 chips. A standard 4-8 chip structure. Nobody wants fewer chips in a pot.
Pismo Card Room $5.00 and $20.00 
