Expansion still in pipeline
THE Water Corporation says its $21 million project to build a 13km recharge pipeline and monitoring bores in Wanneroo and Neerabup is progressing well.
The update on the Groundwater Replenishment Scheme came after a Wanneroo resident raised concerns that the project had stalled near Lake Joondalup.
“The project has not stalled and the overall expansion project is on track for completion in late 2019,” Water Corporation acting assets delivery general manager Nathan Hardwick said.
Work on the underground recharge pipeline from the Beenyup wastewater treatment plant in Craigie to the bores is expected to finish next July, while the bore construction is expected to finish in April.
Mr Hardwick said work would resume at the southern section of Studmaster Park, up to Ariti Avenue, in early 2019, after the rainbow bee eater nesting season finished.
He said the pipeline route was chosen to minimise potential environmental impacts, with the first stages of work using trenchless technology in environmentally sensitive areas such as the Banksia woodland in Wanneroo.
“The second stage of work using trenchless technology began in September to install a 1.4km section of pipe underneath Beenyup Swamp, Perry’s Paddock and Studmaster Park,” he said.
“Work is on track to be completed in November.
“The next two stages of work will then take place in Woodvale and Neerabup, with work to begin in late October using traditional open trench methods.
“Construction of the deep underground bores and associated aboveground infrastructure began in December 2017 and is due for completion by April.”
Mr Hardwick said groundwater replenishment was part of the longterm ‘Water Forever’ plan to secure water supplies in response to climate change.
He said the recharge pipeline would transfer treated, drinking-quality water from the Craigie water recycling plant to the recharge bore site.
“The first 14 billion litre stage of the Groundwater Replenishment Scheme began recharging to aquifers last year,” he said.
“The expansion currently under way will double the scheme’s capacity to be able to recharge up to 28 billion litres of water per year.” d487278
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