The following four graphs show the level of emissions from the Domain Tunnel ventilation stack for a 24 hour period starting from 6am. The Domain Tunnel ventilation stack is located in Grant Street, South Melbourne.
All graphs show hourly moving averages at 15 minute intervals (blue line). The horizontal line shows the EPA Licence Limit (red line).
These graphs are updated at approximately 9am (AEST) each morning. It should be noted that all emissions from the Domain Tunnel during normal operations (which excludes emergency situations like fire and smoke management) are via the stack and there are no emissions from the portals.
The graphs on this page are plotted from data that comes directly from the stack monitoring equipment located in the Domain Tunnel. This data may be adjusted at a later time through a standardised procedure to account for instrument errors, power interuptions and the like.