Opened May 1970.
- Third largest slipway in New Zealand.
- Last dredged in 1984.
- Prior to the Resource Management
Act, inadequate containment of
discharges from vessel cleaning
and repair caused the sediment to
The contaminated material will be
dredged using a long reach excavator.
- Dredgings will be mixed with concrete
and activated carbon in a pugmill to
form a mudcrete.
- The mudcrete will be used to
construct a new reclamation by
placing it on the seabed.
Key contaminants of concern,
tributyltin (Tbt) and copper, were
historically used in antifouling paints.
- Approximately 28,000m3
of contaminated marine sediment are
to be stabilised.
- The proposed reclamation is
- Dredging and construction will
take approximately 6 months.
- The project will cost $8.9m from
inception in 2010 through to
completion in 2018.
- The project is being funded 50/50 by
Port Nelson and the Government’s
contaminated site remediation fund