clear fold in big pot?

Button=60\0\.3 over 40 hands... and bb is 40/25/2 over 50
Party Poker 3/6 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is CO with 3/images/graemlins/spade.gif, A/images/graemlins/spade.gif.
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, Button calls, <font color="#666666">1 fold</font>, BB calls.

Flop: (6.33 SB) 5/images/graemlins/heart.gif, 4/images/graemlins/diamond.gif, A/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, Button calls, BB calls.

Turn: (6.16 BB) 7/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, Button calls, BB calls.

River: (9.16 BB) 4/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, BB folds, Hero...

is this a standard fold?