South Taranaki District Council (STDC) proposes to replace the aging 100mm asbestos cement (AC) water mains running through Kapuni and Rangauri Streets in Manaia. These existing mains will be decommissioned in place and made redundant. The replacement will consist of a new DN125 SDR 11 PN16 PE100 HDPE pipeline.

Installation of the new water main will be carried out using open trenching and/or underboring methods, as appropriate to site conditions.

In addition, the Contractor shall supply all required fittings for both same-side and opposite-side lateral service connections to existing property kits, as detailed in the drawings and listed in the Schedule of Quantities. To minimise surface disruption and reduce environmental impact, service pipe connections shall be installed using trenchless techniques such as Horizontal Directional Drilling (HDD), Microtunneling, Auger Boring, or other approved alternatives.