I’m helping out a project team in Italy with their LEED project. This is a mid-rise residential building that has a 2-story underground parking garage. It has, besides the main entrances (directly open to the outside) an open ventilation shaft on each parking floor that is connected to daylight (open terrace on ground floor). First of all, does the parking area need to meet the requirements of the IEQ prerequisite 1, since it is not "regularly occupied"?

Secondly, the garage is designed to have an exhaust system in each garage floor with CO and CO2 sensors that is set to go off only when the CO and/or CO2 levels are above a certain set pint. In other words, it will exhaust only "when needed". Would this be enough to satisfy the credit?

I would appreciate any guidance on this! thank you