24 Oct '12, 6am

Results of M5 East Tunnel filtration trial released:

NSW Roads Minister Duncan Gay has released an independent study into the effectiveness of the M5 East tunnel air quality filtration plant. “After 18 months of rigorous scientific data collection and testing by the CSIRO, the study has found the trial air filtration plant had only a minor impact on air quality and its ongoing operation is not value for money,” Mr Gay said. “The plant was installed in 2010 after community concerns were raised about haze in the tunnel. The air filtration trial will now be shut down, but the plant will continue to operate for a further three months. “The study indicated around five per cent of total haze pollution and three per cent of nitrogen dioxide in the tunnel was being removed via the filtration plant. “While these results are not what we expected, motorists should be aware the levels of pollution within the tunnel have been monitored 2...

Full article: http://www.transport.nsw.gov.au/media-releases/results-m5...

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