Banjo,
The curfew period works quite well at the moment for most maintenance and construction jobs around the airport, but there may well be elements of the construction that require more than just 7 hours to complete.
You have to remember it's a delicate job having to work around and over the rather old and no doubt brittle SWSOOS tunnel. The potential environmental consequences of any stuff ups could be huge.
I'd prefer them to take their time and do it properly than rush to beat a curfew end time.
There's also the long term aircraft noise concerns that have been raised for suburbs along the 16/34 flight paths. If the work was to only proceed during curfew, then the job would take far longer and effectively rule 07/25 out of service for a greater period. I'm sure Mr Albanese's electorate would thank him if he went with that option...
Regards,
Nigel
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