This modular HVAC/Pressure Control System maintains BSL3 containment levels in the laboratories and culture storage rooms at ATCC (279 m2 gross area). The module contained all  of the air handlers, variable airflow valves (VAVs), HEPA filter  housings, and the BMS system. The facility’s supply and  return ducts were routed to a location on the building where  the module was attached. The system was successfully commissioned in July of 2008.