Published: Feb. 23, 2023

Thursday, February 23 


UPDATE: 2:08 p.m. 
The heating system at SEEL is repaired and the building is now open and operating at normal capacity. Occupants may return to the building.

UPDATE: 10:56 a.m. 
Boulder Fire-Rescue, CU Boulder Environmental Health and Safety and CU Boulder Police have stabilized the hazardous materials incident at SEEL and have confirmed there is no threat to East Campus at this time. CU Boulder Facilities Management is currently repairing the heating system at SEEL to ensure stabilization of the interior temperature of the building, which houses hazardous chemicals. SEEL will remain closed as the heating and cooling system is repaired. At this time, it is unknown when SEEL building occupants will be able to enter the building, but parking lots and the immediate area around SEEL have been reopened.

CU Boulder thanks its public safety partners for their rapid response.


10:09 a.m. 

Boulder Fire-Rescue, CU Boulder Police and other public safety agencies are responding to a hazardous materials call at SEEL (Sustainability, Energy and Environment Laboratory) at 4001 Discovery Drive, at CU Boulder’s East Campus. 

The building’s heating and cooling systems are disabled, which could cause destabilization issues with several hazardous chemicals housed in the building. All SEEL building occupants have been safely evacuated to nearby buildings. 

Boulder-Fire, CUPD, CU Boulder Facilities Management and Environmental Health and Safety teams are on scene and assessing the situation. Updates will be provided as information becomes available. SEEL building occupants are advised to avoid coming to the area at this time.