The special basement structure of CRANN is critical to the low-vibration standards of the facility. There are overhead commuter trains to the south and heavy truck traffic to the north, both contributing EMI and vibration to the site. The basement is organized into noisy corridors serving a series of isolated low-vibration labs. The noisy corridors are home to pumps, chillers and dedicated AHU’s. The low vibration labs have a double wall design, with access flooring and fabric ceiling. Active EMI cancellation system will be used to offset the field of the passing train.