A project to upgrade a storm-water pumping station in Mosgiel is “making good progress”, the Dunedin City Council says.
During the July 2017 flood, the pumping stations in Carlyle Rd and Reid Ave were unable to handle the more than 120mm of rain which fell in Mosgiel over a 24-hour period, so storm water entered the wastewater network instead of draining into the Silver Stream.
Council 3 Waters contract delivery manager Chris Jones, speaking at a Mosgiel-Taieri Community Board meeting last month, said he started work for the council in December last year.
A key project he had identified was the upgrading of the storm-water pumping station in Reid Ave.
“It’s been a harder project to deliver than anyone anticipated but we are making good progress,” Mr Jones said.
The final design for the upgrade of the Reid Ave station had been peer-reviewed and its comments were being analysed.
Once a final design was “locked down”, the work would be put out for tender.
“I would like to be in a position that we are naming a contractor by the end of this year.”
At present the pumping station in Reid Ave could discharge one cubic metre of storm water a second. The upgraded station would be able to discharge three times as much, he said.
After the work in Reid Ave was complete, the focus would shift to upgrading the station in Carlyle Rd.
“By the end of the year I want to have the design team engaged and under way with that.”
Once the Carlyle Rd station had been upgraded, the focus would shift to accessing the infrastructure, such as the pipes transporting storm water to the stations.
“It’s going to be a number of years before we get out into the network itself, by the time we’ve dealt with the two pump stations.”
He would update the board next month on how the project was progressing, he said.