This project added additional control dampers, pressure sensors, occupancy sensors and CO2 sensors to the building creating an organized zone effect for exhaust and fresh air management. Nine sections of the building are now able to be controlled independently. Dampers have also been added to the return air system. The exhaust air has been reduced by first satisfying the occupancy requirements, then the CO2 requirements. Dampers have been added to the restrooms to shut down ventilation when space is unoccupied. A portion of the basement exhaust system has been decoupled from the remainder of the building and satisfied independently. These efforts have resulted in a 50% exhaust and corresponding makeup-air reduction with an approximate annual savings of $73,000.