The name after Chester Simms is Dominic Battilana (Top line)
***William Foster might be the same Bill Foster from Foster's (Bighorn) Club ... Rio Vista is about 20 miles from Stockton, Ca I have NOT confirmed that.
The 3 names...Arata, Battilana & Gianelli are all connected in Stockton, Ca.

Chips are almost identical....and I believe shipped to the same address in Stockton, Ca. I do believe it was Arata's address.
There are also a few newspaper articles where these guys are getting sued by former partner.