"Many pass holders, despite arriving two hours before the game, found themselves boxed in among unruly crowds as they simply tried to find a parking spot," the letter to pass holders states. "On behalf of the entire University, we apologize for the problems that occurred Saturday.
"The situation that has arisen in the G-10 area simply cannot be tolerated."
Beginning Saturday, officers will "strictly enforce" a prohibition against tents and grills in the parking area.
Carpenter mentioned that traffic flow has at times been impeded and that there are concerns an ambulance or other emergency vehicle could have a hard time responding to a call in the garage.
All tailgating activities have to be limited to your specific parking space, with no spreading out to take up two or three spots. Authorities also will be looking for underage consumption of alcohol.
The parking pass must be prominently displayed on the rearview mirror, and people wanting shade are encouraged to park in one of the lower levels.