AK 10NL to passive?

[apple11]

villein seemed pretty solid judging for the play so far. I planned on checking and betting any non spade river. In hindsight I sort of wish I bet the turn to charge him if he was on a flush draw. On the river does anyone bet for value with my line?

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($5.75)
Button ($3.55)
SB ($18.30)
BB ($9.60)
Hero ($9.60)
MP ($6.60)

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $0.4</font>, <font color="#666666">2 folds</font>, Button calls $0.40, <font color="#666666">1 fold</font>, BB calls $0.30.

Flop: ($1.25) K[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $1</font>, Button folds, BB calls $1.

Turn: ($3.25) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: ($3.25) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Final Pot: $3.25