Am I betting for value on the river

ok, the table I'm playing at is pretty loose, 70% players see the flop. villian is loose pretty passive. Sometimes likes to pull c/r with air on turn and river.

5handed .5/1
hero has Q [img]/images/graemlins/heart.gif[/img]6 [img]/images/graemlins/club.gif[/img] in the BB

preflop:
villian calls, 1 call, 1 fold, SB completes, hero checks

flop:4 SB
TQ9 [img]/images/graemlins/spade.gif[/img]
SB checks hero bets, villian calls, rest fold

turn: 3 BB
5 [img]/images/graemlins/spade.gif[/img]
hero bets, villian calls

river:5 BB
T [img]/images/graemlins/heart.gif[/img]
hero bets

what do you think of my line? I think a c/c or even a c/f on the river could be appropriate. So I guess my real question is how often a donk have a spade here?