Ambient air quality goals
The conditions of approval on the M5 East Freeway are that the tunnel portals, ventilation system and stack must be designed so that emissions do not result in ambient air quality at ground level exceeding:
NO2 - one hour average of 256µg/m3(0.125ppm).
PM10 - 24 hour average of 50µg/m3.
Protocol for dealing with PM10 exceedances
The RTA has developed a protocol for deciding how a PM10 air quality goal exceedance due to the M5 East Freeway ventilation stack is determined. Refer to the documents section to read the protocol: DUAP Condition 73/4 Protocol.
Please click here to view "exceedances" documentation
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