From my experience at this level a river bet like this usually means he hit the river card. At considering he called the pre-flop raise I would say there is a good chance it was sooooted. So with the call on the flop it wouldn't surprise me if it was J-10 spades.
I'm not going to overthink this one. Seems like 10NL 101 to me. Of course I'm only on 1oNL100.
Whoops, looked back on this and I was way off. Forgot there was a 10 on the flop. So we will say Q-J sooted.