Kaiteriteri Replacement Sewer Main
SP1 involved 3,300m of 280mm PE pipe, installed along the Riwaka – Kaiteriteri Road from depths of 1m to 2.5m. This was installed between April 2017 and December 2017 before the Christmas Shut down period. Traffic management set up was crucial for the safety of Public and Workers, and allowed a successful install of the pipeline to the contract programme. Various drain points and air valves with odour filters were installed along the route.
SP2 involved the refurbishment of the existing pump stations at Stephens Bay and Tapu Bay, as well as upgrades to the pipelines between the two pump stations.
158m of PE pipe was slip lined through an existing gravity line, reversing this into a rising main. 40m of PVC gravity line was installed as part of SP2.
Both sites involved setting up temporary pump stations and managing flows for the duration of work at each station, removing all existing pipe work and all concrete structures except for the Wet Wells. New precast valve chambers were installed along with air valve and flow meter chambers. New pumps and pipe work were sourced from local suppliers. Locally made aluminium wet well lids with safety handrails and kick plates were installed at both sites.
SP3 work was to clean out the existing pipe under the estuary at Tapu Bay, then plug and fill with water.
Overall this project was very successful, council consent conditions were met, timeframes adhered to and all stakeholders happy with the outcome.