Updated 3:23 p.m. Authorities have given the all-clear at Mt. SAC. The evacuation order has been lifted. — Original message: The university is aware of a potential emergency situation at Mt. SAC and Walnut High School. The potential incident is isolated to Mt. SAC and Walnut High. There is no impact to the Cal Poly … Continue reading Updated: Campus Unaffected by Evacuations at Mt. SAC, Walnut High