"Replace calculation steps 2 and 3 with the following:
2. For densely occupied spaces, document compliance with Case 2.
3. For all AHUs, document compliance with Case 1. Use Table 2 to identify each AHU, the presence of appropriate monitoring for that unit, and the minimum required outdoor airflow for that unit (as generated via compliance with IEQ Prerequisite 1). Use Equation 2 to calculate the portion of the building’s total outdoor air intake flow serving occupied spaces."