I cannot tell from the picture but he does not look like a Chi but a possible Basenji or mix. He could be a Cardigan Welsh Corgi as they come in black & white. He is at the Orange County Animal Care Center. I have not contacted the shelter to see is he is still available. Is there anyone nearby who can check on him?
I found out that this shelter does not have a Basenji rescue contact.
Here is his Petharbor page: