Mr. Declan Burke:

During normal operations, the units are designed not to vent. It would be an abnormal event if they were to release gas. These are delivering pressure at 35 mbar, which is very low. As regards noise, it would not be heard. A passerby may smell gas in the area. The vent stacks are located and designed in accordance with standards and are located at a height of 2.5 m so they are not a public nuisance, if that answers the question.