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The smell, affecting householders in Boyes Cres, Wilmot Ave and Bridge St, appears to emanate from sewage pipeline inspection hatches.
Boyes Cres resident Steve Gurney said some days he had been ‘‘gagging with the stench’’, and has had to shut his windows.
Mr Gurney, a nine-time winner of the Coast to Coast, believed the problem was most noticeable during westerlies coming up the lake, and said it had worsened since the latest lockdown.
Complaints he had laid with Queenstown Lakes District Council (QLDC) and Otago Regional Council had got nowhere, he said.
Exasperated, Mr Gurney on October 1 contacted neighbours to see if they were also unhappy.
As a result, this week he petitioned QLDC with the names of 16 aggrieved householders, some of whom had also lodged complaints.
The petition urged the council to ‘‘fix the smell problem’’, give a deadline for fixing it, and provide independent certification it had been fixed.
Council infrastructure general manager Peter Hansby said, ‘‘this has been an unpleasant experience for residents, and we thank them for their patience.’’
The council had been taking steps to provide an interim fix, and a permanent solution, ‘‘thanks in part to local residents bringing it to our attention’’.
‘‘The issue is related to wastewater stagnating in the Hanley’s Farm pipeline and creating an odour as it flows to, and then from, the Frankton Beach wastewater pump station.
‘‘Things should be resolved when there is increased demand and flows helping to prevent stagnation.’’
A key part was an upgrade to the Hanley’s Farm wastewater pump station, due to be completed in the first half of next year, Mr Hansby said.
Meantime, the council was looking to install odour filters on Boyes Cres’ manholes, though it had ‘‘supply chain issues with our original preferred product’’.
Mr Gurney, who saw that response, asked why it had taken until now to learn ‘‘the truth of the problem’’.
He said he was keen to know if other Queenstown areas were suffering similar sewage whiffs from what he called Old Frankton’s ‘‘antiquated sewerage reticulation system’’.