A roof-mounted fan delivers 100% outdoor air into a dedicated shaft duct. The fan operates using a variable frequency drive motor to maintain a constant static pressure within the shaft duct. A variable-air-volume (VAV) terminal unit located in the mechanical room on each floor of the building controls the delivery of the outdoor air from this shaft duct to the mechanical room. This VAV terminal unit is ducted on its intake side to the dedicated outdoor air shaft duct. Only outdoor air passes through this VAV terminal unit. The mechanical room acts as a mixing plenum for the outdoor air and the return air from the floor before that mixed air is drawn into the air handling unit located in the mechanical room. The air handling system is a floor-by-floor design with a single air handling unit located on each floor and serving only that floor. This VAV terminal unit contains a pressure independent primary air volume controller that controls the supply air quantity to within 5% of the airflow setpoint regardless of changes in system static pressure. This VAV terminal unit measures airflow with a pitot-tube assembly. The independent controller converts the measured velocity pressure using the known cross-sectional area to calculate the actual airflow rate. This measurement and calculation is within 5% of the airflow rate setpoint. In the "occupied" mode, each VAV terminal unit controls to the design outdoor air flow setpoint for its respective air handling system. In the "unoccupied" mode, the control damper in each VAV terminal unit is closed. The VAV terminal units controlling outdoor air to each air handling system operate based on the following sequence of operation for the control, monitoring and alarming of the outdoor airflow provided to each floor\'s air handling system: - Outdoor air fan energizes when the Energy Management System (EMS) indicates the building is in "occupied" mode. - Each VAV terminal unit in the outdoor air delivery system opens upon energizing of the outdoor air fan. - A temperature sensor at each VAV terminal unit controls the electric heater to maintain a minimum of 50 degrees F in the mechanical room. - A VAV terminal unit fails closed in the event of power loss. - The VAV terminal unit controller shall monitor and trend the outdoor air delivered to each air handling system. - Each VAV terminal unit graphic displays the measured airflow and the airflow setpoint. - If the measured airflow at a VAV terminal unit varies by more than 10% of its setpoint, an alarm message is sent to the Central Control Panel (CCP) and a notification alarm is generated to alert the building operator of this condition. With respect to carbon dioxide (CO2) monitoring, a CO2 sensor is located in the return air transfer duct at each floor\'s mechanical room. This sensor has an accuracy of +/-3% over a range of 0-2000 ppm. Each floor\'s CO2 sensor is monitored and trended by the EMS. The EMS has no less than fifty (50) points available for future tenant use as inputs for CO2 sensors installed in densely occupied areas. Does the system as outlined herein meet the requirements of LEED-CS v2 EQ Credit 1 - Outdoor Air Delivery Monitoring?