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Silt FAQs

When you call to arrange silt pick up, you will be asked to describe your silt in general, to enable the right disposal site to be selected. There are four types of silt:

  • Clean silt – Silt from places like roads and streets, gardens that do not have a septic tank, and does not contain solid items like flood-damaged household furniture.
  • Mixed silt – Silt mixed with small amounts of litter such as waste from flood-damaged household goods (e.g. plastic, small toys and food waste), and food affected by the flood, e.g. apples and onions.
  • Contaminated silt – Silt that may have had septic tank, spilt paint, diesel, chemicals etc, mixed through.
  • Woody silt – Silt mixed with quantities of timber and other storm-related debris like fence posts, trees etc.

Hawke’s Bay Regional Council initially took random samples across the region to test the silt and understand the make-up of the silt. We found that outside of Awatoto, there no significantly contaminated silt. People should continue to take precaution and wear suitable PPE, but silt can safely be taken from around the region.

Silt samples from silt deposit sites are being taken several times a week. To date the results are showing very little in the way of chemical contamination, with heavy metals generally present at the natural ‘background’ concentrations for our region, and other contaminants such as pesticides, herbicides and hydrocarbons typically not being detected. Our site contamination specialists are continually reviewing the sampling and analysis regime and adapting it as necessary, based on the results coming in, observations on site, and the origin of the material being deposited.

Analysis for pathogens common in flood situations have been incorporated into the regime, with the first set of results expected in the coming days.

A number of silt collection sites have been established and are storing silt around Hawke’s Bay.

HDC and HBRC have been working under the emergency works provisions of the Resource Management Act 1991 to enable works to commence as soon as possible to allow for roading connections to be re-established and drainage areas maintained.

Before any new site is opened it is assessed looking at whether there any special features or characteristics such as: archaeological sites, wahi tapu areas, significant flora and fauna, waterbodies and wetlands, alongside proximity to neighbouring sites and community uses.  Given the urgency of clearing silt and other debris from roading corridors, the six established sites are currently being consented retrospectively.

A further eight sites are being investigated to determine whether they are feasible for use.

We’re working through our jobs list from the community, and are prioritising areas where silt is blocking property or drains. The jobs list we have at the moment in April 2023 is for around 700,000m3 of silt, which will take around six months to complete.

We estimate that this is 25% of the total amount of silt to be cleaned up. With the sheer volume of silt over a large area we expect the complete clean-up of all of the silt to take many months.

The taskforce is looking at a range of options for storing and using silt in the future, and working closely with other councils, industry, and landowners to develop solutions for the region.

We know lots of people in the community are interested and also concerned about what happens with this large volume of silt and how long it will take. Our team is committed to finding the best solutions we can for our rohe and will keep the community updated.

We are working hard to reduce double handling as we clear silt around Hawke’s Bay.

If you or contractors working for you have a large amount of silt and are able to move it directly to one of our disposal sites using dump trucks, please get in touch with us on 0800 108 838 and we will work with you.

You need to contact your insurance company regarding this work who can assess the need for silt removal and the best way to do this. Please see the ‘Removing silt from underneath your house' for more info.

If you’re dealing with silt, it’s important to work safely due to the risk of pathogens, such as bacteria or viruses, which are typical following a flood and will decrease over time as they are exposed to air and sunshine. Ensure you’re limiting the risk of infection by:

  • using good hygiene, such as wearing gloves, avoiding breathing in dust, and washing hands and exposed skin frequently
  • washing freshly soiled clothes regularly

Out of precaution we wouldn’t recommend adding fresh silt into vegetable gardens until spring to allow pathogen levels to decrease.

Lightly silted tanks can be extracted and disposed of at East Clive using a council approved contractor listed on this page.

If you have a larger accumulations of silt, it will require extraction using jetting or another method. Laterals and drainage pipes need to be checked and cleaned if they are blocked. Hastings District Council is currently working through disposal options for larger amounts of septic waste contaminated silt. Contact hdcsilt@hdc.govt.nz to organise a visit from HDC.

The Silt Recovery Taskforce has been working with Insurance Council NZ (ICNZ) and EQC to release an ‘authorised contractor listing’ for landowners to use when removing silt from their properties.

These contractors are authorised by the Taskforce to directly access deposit sites once silt is collected. They understand the delivery model the Taskforce has setup with ICNZ and EQC where the cost for collection and transport to the deposit site is undertaken by the Taskforce, but the work on property and underneath the property to clear and remove silt is at the cost of the landowner – with possible funding for some or all of this work through Insurance and/or EQC payouts.

The contractor listing will regularly reviewed, and added to – if you are a contractor wanting to be added to the list below, please email: waste@hbrc.govt.nz

Further information on the ‘authorised contractor’ process can be found here.

Contractor

Key Contact

Contact Details - Email

Contact Details

Sitewise Status

Service Offered

2020 Construction

Michael Ngahuka

michael.ngahuka@2020construction.co.nz

021 216 5682

Gold

Excavators and Trucks

A Grade Earthworks

Nick Wiltshire

nick@a-grade.co.nz

 

Green

Excavators and Trucks

ACM Metal Supply

Stuart McKinnon

stuart@acmetalsupply.com

021 194 1881

Green

 

Agnew Transport

Willie Agnew

willie@agnewtransport.co.nz

027 442 9332

Gold

Excavators and Trucks

Akra Civil

Sarah Greening

admin@akracivil.com

027 229 8435

Gold

Excavators and Trucks

Angus McMillan Concrete

Kristina Salmons

kristina@amc.nz

06 873 4428

Green

Excavators and Trucks

Backyard Diggers Hawkes Bay

Michael Newman

backyarddiggers@xtra.co.nz

0210 235 4378

Green

Excavators and Trucks

Bare Knuckle Contracting

Brendon Edmonds

info@bareknuckle.co.nz

027 356 8251

Gold

Excavators and Trucks

Berketts Earthmovers

Sam Staples

sam@bem2012.nz

027 705 9593

Green

Excavators and Trucks

Boxline

Phil Pointon

boxline@gmail.com

021 296 9969

Gold

Excavators and Trucks

Build Flex Solutions

Cheyne Hakaraia

cheyne@buildflexsolutions.co.nz

027 542 6966

Green

Excavators and Trucks

Civil Alliance Ltd

Dave Pratt

dave@civilalliance.co.nz

022 088 1679

Impac

Excavators, Bulldozers, Road tip trucks, 6x6 ADT Dump trucks, Rollers, Transporter, Water trucks, Grader, Loaders, skid steer.

CLEAN EARTH Ltd

Deborah Burnside

info@cleanearth.co.nz

06 844 1060

Not Required

Skip Bins Delivery/ Collection

Composting NZ

Glen Sacich

glen@compostingnz.co.nz

027 252 1538

Gold

Excavators and Trucks

Dawson Group Limited

Brendon Dawson

dgroupnz@gmail.com

027 564 6414

Green

Excavators and Trucks

Devine Plumbing

Kerry

admin@devineplumbing.co.nz

021 613304

Gold

Excavators and Trucks

Digger Services HB

Wiremu Tomoana

info@dshb.co.nz

027 5103401

Green

Large excavators/ Heavy tipper truck hauling. Road repairs/ Earthworks/ drainage

Drainways

Matthew Donk

matthew.d@drainways.co.nz

027 445 1740

Gold

Excavators and Trucks

East Coast Traffic Limited

Aaron Lawson

ryan@eastcoasttraffic.co.nz

027 391 9429

Gold

Traffic Management

East Coast Earth Worx

Hugh Dowding

pjdowding@xtra.co.nz
hughdowding@outlook.com

Pete 0276840800
Hugh 0273664470

Green

 

Elite Finishes Contracting

Larry Jessup

larryjessup879@gmail.com

 

Green

Excavators and Trucks

Everfresh

Nick Agnew

nick@everfresh.net.nz

027 583 7373

Green

Excavators and Trucks

Gairs Contracting

Ed Goody

ed@gair.co.nz

027 406 7089

Gold

Excavators and Trucks

HB Civils

Eon de Klerk

admin@hbci.co.nz

027 314 3641

Gold

Excavators and Trucks

HES Earthmoving

John Birkett

john@hesearthmoving.co.nz

0274 500 466

Gold

Excavators and Trucks

Hick Bros Civil

James Bilkey

james.bilkey@hickbros.co.nz

021 818861

Gold

Excavators and Trucks

MPT Concrete

Mike Teddy

mike@mptconcrete.co.nz

027 547 8105

Gold

Excavators and Trucks

Ngaio Contracting

Nick Benge

ngaio.hns@outlook.co.nz

027 441 4806

Green

Excavators and Trucks

Phoenix Contracting

Mike Walmsley

m.walmsley@phoenixcontracting.co.nz

021 242 6617

Gold

Excavators and Trucks

RBS Group

James Simpson

james.simpson@rbsgroup.nz

022 685 6295

Gold

Excavators and Trucks

Redline Earthworks

Josh Bartosh

josh@redlineearthworks.co.nz

0274 848 289

Green

Excavators and Trucks

Russell Roads

Gavin O'Connor

gavin@russellroads.co.nz

06 879 4560

Gold

Excavators and Trucks

SolidCrete HB

Wipere Albert Dixon

Solidcretehb@gmail.com

0210 231 7575

Green

Excavators, Tipper Trucks and Resources to clean up property

Te Aratika Infrastructure Ltd

Markus Rochel

jessica.thomas@tearatikagroup.co.nz

09 420 4726 

Gold

Excavators and Trucks

Toa Civil Construction Ltd

Joshua Paku

josh@toacivil.co.nz

027 346 0686

Gold

Excavators and Trucks

Tōhaunui

Dawson Tuki

dawson@tohaunui.co.nz

027 638 1594

Gold

Excavators and Trucks

Topline

Carl Webber

carl@topline.net.nz

027 206 2082

Gold

Excavators and Trucks

Whakamana Ltd (Paharakeke)

Andy Winitana

andy@whakamanaltd.co.nz

(021) 625 549

Green

Excavators and Trucks

Wilco Contracting

Wilco Contracting

miles@wilco.co.nz

0800 945 261

Gold

Silt Removal Sub Floor

Whakamana Limited (Paharakeke)

Andy Winitana

andy@whakamanaltd.co.nz

021 625 549

Green

Excavators, Trucks and Resources to clean up property – Labour Team

Wood waste has washed up on beaches, river sides, roadsides, public areas and private properties after the cyclone. We will remove debris from public places to chip it, starting with the immediate area around the Heretaunga Plains and then progressing further afield. We strongly recommend against burning this waste as it will be contaminated and burning the waste risks spreading any contamination.  

If you have wood waste on a lifestyle block, farm or orchard, the Regional Council will be able to help remove larger volumes.  Landowners are asked to move the wood waste to a location on their property with suitable access for trucks. The landowners can then contact us on 0800 108 838 or 06 835 9200 as we will coordinate with a contractor for its removal. 

Post Cyclone Gabrielle 2023 large woody debris assessment

The cyclone has caused many vineyard, and orchard posts and wire to be ripped out of the ground, and these are now scattered across properties, neighbouring land and roadsides. 

IMPORTANT! Tanilised posts and wire that make up this waste cannot be disposed of through burning; burning of this waste will release toxic chemicals into the wider environment.  

Where landowners have large quantities of posts and wires from fences, viticulture and horticulture operations, these can be collected by HBRC and held in a secure site for further work. HBRC will arrange collection and suitable remedial work to separate wire, for wire recycling and return of usable posts to farmers. Landowners can contact the regional council on 06 835 9200 or 0800 108 838 to coordinate the removal of posts & wire fences. 

The Council recommends that you discuss this option with your farm advisor or agronomist.  Click here to find a list of New Zealand Institute of Primary Industry Management approved consultants.

The Silt Recovery Taskforce assessment officer can help you work through what silt should be removed, or if it stays how this could be integrated. For  specialist advice please speak to a specialist advisor. Contact 0800 108 838 or email waste@hbrc.govt.nz to get in touch with an assessment officer.

Some useful resources to help you with any discussions are linked below:

LandWISE

Revegetating Cropping Soils after a Flood

Beef + Lamb NZ

Recovering from a Flood

Dairy NZ

Flood damage response

Sustainable Faming Fund

Silt Recovery Lower North Island Storm Event 2004

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