Media Release - Site Works Begin on Calwell Slipway Remediation Project
Site works with the objective of cleaning up contamination have begun on the Calwell Slipway Remediation Project at Port Nelson. Regularly used since 1970, historical ship repair work has contaminated the marine sediment over the years prior to the RMA, with tributyltin and copper being the main contaminants of concern. The objective of the project is to dredge the contaminated areas of the basin and stabilise the sediments within a reclamation. The site works will cost $8.3 million.
The clean-up of Calwell Slipway Basin is important for the health and protection of the Nelson Haven, an internationally and culturally significant area of coastal marine area. The Haven is recognised as important to migratory wading birds, and has high recreational value. The sediments have built up within the Calwell Slipway Basin to a level where they pose a risk to the surrounding environment and impact the safe navigability of vessels.
Owned and operated by Port Nelson Limited, Calwell Slipway is the third largest slipway in New Zealand, making it a nationally significant asset, comfortably accommodating vessels up to 80m in length and up to 2500 tonnes in weight.
The total project cost of $8.9 million is being funded 50/50 by Port Nelson and the New Zealand Government through The Ministry for the Environment’s Contaminated Sites Remediation Fund. The Calwell Slipway project is currently ranked 2 on the CSRF Priority List, a list of 10 sites that have been identified by the Government as a priority for clean-up. There is also an estimated $198,000 of in-kind contribution to the project being given by Port Nelson
Works on the site are due completed by April 2018. The project is being managed by Port Nelson.
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