One Central Superlot 2 Ground Remediation

Extensive ground remediation, civil infrastructure, and site preparation for 10 major structures in central Christchurch.

SERVICES

Remediation Earthworks Civil

Location

Christchurch CBD

Status

Completed in 2024

Works Description

A critical anchor project delivering 93,830m3 of earthworks. Operations involved the safe excavation and off-site disposal of 12,400 tonnes of contaminated soils. The foundation preparation included constructing gravel rafts for 10 buildings, requiring 6,700m3 of compacted fill and specialist Geoweb reinforcement.

Contamination Removal

Safe excavation and certified disposal of 12,400 tonnes of contaminated soils across designated zones.

Gravel Raft Foundations

Placement of 6,700m3 of compacted gravel rafts, 6,365m2 of sand blinding, and specialist Geoweb reinforcement.

Urban Infrastructure

Installation of over 1.2km of stormwater pipework, 1km of wastewater mains, and 1.5km of electrical trenching.