The petitions call to lower mandatory fees.
Union members rallied at a protest in College Park on Tuesday.
All students and employees will be provided two face coverings.
Community members have openly opposed the new regulations.
An all-clear was issued at 12:55 a.m.
The announcement comes after in-person undergraduate instruction was delayed by two weeks.
More than 15 people attended the emotionally charged meeting.
Several College Park hotels are offering students discounted long-stay packages for the fall semester.
"If it has to happen, then we’ll vigorously defend them in the courts.”