He absolutely an Eastern box turtle..he could be a recently escaped pet, or a long term escaped pet...please don't take him any where until you have tried to find an owner...for now give him a warmish soak, then put him in a tote with a light on it and think about how you will advertise him...notices on poles bulletin boards...etc...Hmm I'm not sure. It definitely is an escaped pet, I don't think any wild box turtles live in Cali.