There's one right across from the regular CA * lounge. I forget the name and it's nothing special by any stretch of the imagination, but depending how long you're there, might be worthwhile.

Didn't pay any attention if it has actual paid entry or not, but it's a Priority Pass and Diners Club lounge. You can get one of those before the trip if needed. (Ok, maybe not Diners in the US since BMO seems to have very little interest in issuing new consumer cards, but eh)