Actions that must be undertaken immediately or within a time too short to allow full compliance with these rules, to avoid an imminent threat to public health or safety, to prevent an imminent danger to public or private property, or to prevent an imminent threat of serious environmental degradation, shall be exempt from the procedural requirements of this chapter. Such actions include, but are not limited to, the following:

(1) Emergency pollution control actions responding to accidental discharges, leaks or spills into the air, state waters, or on land.

(2) Implementation of a change in waste disposal procedures caused by unanticipated changes in waste sources which are in compliance with federal and state regulations and standards.

(3) Cleanup or decontamination of academic and research facilities or equipment accidentally exposed or contaminated, to permit maintenance, repair or relocation, when the procedures followed are in accordance with federal or state guidelines, recommendations, or standards.

(4) Emergency actions implemented to reduce an imminent hazard to the health and safety of an element of the university resulting from structural failure, equipment malfunction, human error, or natural event.