We have a small CI project with existing CFC-using base building HVAC equipment that is not planned for replacement. Per the interpretations above it would seem these systems are outside of the scope of work and exempt from the prerequisite. However, some related systems will be modified - (1) ductwork within the TI space, and (2) possibly moving the HVAC onto vibration mounts. Would either of these two activities be interpreted as having modified or having influence over the HVAC equipment, consequently including the HVAC in the LEED scope of work? Thank you!