Passive Ventilation System Sections

Here are two sections illustrating passive ventilation systems. One draws are air from the side of the building and the other from the ground floor. Both systems condition the incoming air via underground cooling tanks which use cold water from the harbor. The water that is drawn out of air as it passes through the tank could be used again as gray water in the building.  

Below are two sketch models that focus on drawing air into the building from the Purchase St. side of the site. The goal is to configure the space to maximize airflow into and around the building.