As part of the BJCIH Lab Exhaust Systems Updates Contractors will be performing work on the roof mounted exhaust air handling unit on May 2nd 6 pm – May 4th 12 am. This will affect Lab exhaust fans and air handling units feeding floors 7 thru 11. There will be no available exhaust to the lab hoods. No hood work shall be done during this outage time. There will also be limited to no available air to the lab floors to prevent over-pressurization. This work will be performed during the hours of 6:00 PM to 12:00 AM each night (5/2, 5/3, and 5/4).