Contractors will be evaluating the exhaust system for the vertical expansion project. There will be a reduction in airflow as well as no exhaust on Tuesday, March 28th for all labs on floors 7-11. All fume hoods on floors 7-11 should not be used during these two hours of 4:00 am to 6:00 am. In addition, facilities will be performing preventive maintenance and repair to the supply and exhaust systems serving the vivarium and BSL3 laboratories on the lower level. During this time NO work shall take place inside the BSL3 suite.