The top 17 players Sunday after the fifth round will earn 2008 LPGA Tour cards, while the next 35 will receive conditional status.
Park, the 2004 U.S. Women's Amateur winner, had a 10-under 206 total. She played the Champions Course on Friday.
'Once I sank my last putt, I realized how cold it was,' the former UCLA star said. 'Each hole was literally playing 20 yards longer. I hit 5-iron into greens I was hitting 9-iron into yesterday. It was much tougher and didn't really allow us to attack. I was very pleased with my round and pleased to be under par, again.'
Kuehne, second behind Park for the third straight day, shot a 70, also on the Champions Course.
'I played well and gave myself opportunities. I hit it close and, if I didn't make it, I was able to tap it in,' Kuehne said. 'It was definitely longer and we played into the wind more, but I was hitting it well enough and my shots were online. I just want to take it one day at a time, make pars and post rounds under par.
Colombia's Carolina Llano (69) was third at 7 under, and former Duke star Liz Janangelo (70), Hannah Jun (71), Meredith Duncan (71) and Nicole Hage (68) followed at 5 under.
The Top 17 (no ties) will receive exempt status on the LPGA Tour in 2008
Su A Kim70-72-70212(-4)
Hee Young Park72-67-74213(-3)
Hwan Hee Lee70-71-73214(-2)
Na Yeon Choi68-74-73215(-1)
Eun Jung Yi73-72-70215(-1)
Sarah Lynn Sargent69-71-77217(+1)
Lee Ann Walker-Cooper74-71-74219(+3)
Song Hee Kim74-68-77219(+3)
Sukjin Lee Wuesthoff69-74-76219(+3)
Na Ri Kim74-73-72219(+3)