200nl sick river spot

BTN is NessV, 14/12 reg. folds 33% to cbet. afaik he's not spewy and I'm not sure he can make crazy moves. What is our range? What is his range for raising river? What can we call with?

PokerStars No-Limit Hold'em, $2.00 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP3 ($246)
CO ($170.95)
Button ($244)
SB ($200)
BB ($200)
UTG ($40)
UTG+1 ($39.40)
MP1 ($273.55)
MP2 ($207.70)

Preflop:
4 folds, MP3 bets $8, 1 fold, Button calls $8, 2 folds

Flop: ($19) http://www.flopturnriver.com/phpBB2/.../smiles/2h.gif, http://www.flopturnriver.com/phpBB2/.../smiles/7s.gif, http://www.flopturnriver.com/phpBB2/.../smiles/qd.gif (2 players)
MP3 bets $14, Button calls $14

Turn: ($47) http://www.flopturnriver.com/phpBB2/.../smiles/kh.gif (2 players)
MP3 checks, Button checks

River: ($47) http://www.flopturnriver.com/phpBB2/.../smiles/8s.gif (2 players)
MP3 bets $22, Button raises to $70, MP3 folds

Total pot: $91 | Rake: $3