Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Sediment Control And Transmission Gully

Sediment Control And Transmission Gully:


The Wellington Regional Council is pursuing improved sediment control techniques for earthworks that affect waterways.

This work has urgency because of the pending works for the Transmission Gully road.

The Porirua City Council and the Wellington Regional Council together funded a major review of the sediment control techniques used through New Zealand.

The establishment of new approaches with contractors is now a priority because of major works that are proceeding in the Region as a part of the implementation of the Regional Land Transport Strategy.

The long-term goal is to set much tighter performance standards in the “sediment and erosion control plans” and have regional councils monitor impacts in a consistent way throughout the country.

The Wellington Regional Council is now using Auckland Regional Council’s guidelines known as Auckland TP90.

This standard still based on 1988 guidelines, but provides more material and advice detailing control techniques.

The new guidelines to be developed for WRC will take into account Wellington’s unique plans and soil conditions.

At present, Transit New Zealand is applying for consents for SH58 upgrade that runs adjacent to the Pauatahanui Inlet.

Because the Pauatahanui catchment is so special ecologically, and because of the potential sediment yields are significant, the WRC has required that flocculation be used when sediment retention ponds fail to meet target efficiencies.

Flocculation is brilliant its been used widely in Auckland 21 sites during the winter Alpurt B1 development, uses inexpensive small systems they look like portable loos, costing $1,750 per unit, efficiencies to 99% even in storms. The critical documents required in the SH58 consents also include contractors’ plans and engineering consultants’ plans with specific requirements.

Once these are set in place there will be a clear structure/chain of command to ensure that the problems do not fall through the gaps and people take responsibility for the issues.

All documents require WRC buy-in through certification, and there is also active involvement of Council staff in a sediment control team to be set up with Transit.

So, in fact, there is a level of shared responsibility and an onus for us all to get the environmental management of that project right roll on Transmission Gully.

For more information:



Telephone 233 0252


© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On National’s Ongoing Problems With Abortion

Despite Christopher Luxon’s assurances to the contrary, there is no such thing as “settled law” in New Zealand. Apart from the six provisions that are constitutionally entrenched, legislation can always be amended or overturned by a simple majority vote within our single chamber of Parliament. Luxon’s repeated use of the term “settled law” has been particularly tone deaf, given that several of the US Supreme Court justices used that very same term during their confirmation hearings...


Government: Joint Press Release With President Of The Govt Of Spain Pedro Sánchez & PM Of New Zealand
On June 28, 2022, a meeting took place in Madrid between the President of the Government of the Kingdom of Spain, Pedro Sánchez Pérez-Castejón, and the Prime Minister of New Zealand, Jacinda Ardern, who was visiting Spain... More>>

Winston Peters: Issues Judicial Review Proceedings

Winston Peters has issued judicial review proceedings against Speaker of the House the Rt Honourable Trevor Mallard, challenging Mr Mallard’s issue of a trespass warning against Mr Peters on 28 April 2022, which the Speaker then withdrew on 4 May 2022... More>>

Government: Electoral Changes Will Bring Greater Transparency For Voters

Changes to electoral law announced by Justice Minister Kiri Allan today aim to support participation in parliamentary elections, and improve public trust and confidence in New Zealand’s electoral system... More>>

Government: Wellington’s Rapid Transit Option Progresses To Next Stage
The Government is progressing a preferred option for LGWM which will see Wellington’s transport links strengthened with light rail from Wellington Station to Island Bay... More>>

NZ Republic: Charles CHOGM Speech Green Light For Change
“Prince Charles had made it clear in his speech to the Commonwealth Heads of Government Meeting (CHOGM) in Rwanda today that even the Royal family think it’s time for change” said Lewis Holden, campaign chair of New Zealand Republic... More>>

National: Goodfellow To Retire As Party President
Peter Goodfellow today announced he will not seek re-election as President of the National Party at its Annual Conference. Mr Goodfellow will remain as a director on the board for one final term to assist in the transition... More>>




InfoPages News Channels