In support of the NTA controls upgrade project, work will be completed on the 4th floor supply/exhaust air system controls. There will be intermittent supply and exhaust airflow to the 4th floor and 5th floors during this outage. As a precautionary measure, no work may take place in the 4th floor ABSL3 suites on April 1st 8:00pm – April 2nd 6:00am during this outage. Minimal impact is expected to space temperature and humidity on the 4th and 5th floor animal areas during this outage.