How much does a school get fined for having fans rush the field?

I was part of the crazy scene at Nippert Stadium last night when the Cincinnati Bearcats all but clinched the BIG EAST and a bid to the BCS. My friends and I were trying to figure out how much the BIG EAST fines for rushing the field because they put it in the rules this year that we weren't able to do that. I've heard $10k, $25k, and $50k, but don't know if any of these are true. If someone knows the answer, that would be awesome. Thanks!