Consent - Willowburn Bridge

There are multiple consents which relate to these areas. Summaries of the intended purpose of the consents are covered below, however for the full consent requirements, please contact Mike Brazil on 027 453 3309.

OTAGO REGION WORK ON STRUCTURES IN A WETLAND (RM11.209.00)

Purpose: To place/alter/remove structures and to disturb any substance within a regionally significant wetland throughout the Otago region for the purpose of maintaining state highway bridges, culverts and other structures.

GENERAL RULES

Work must not cause obstruction to any regionally significant wetland or reduce the hydraulic capacity of any bridge or culvert; or impede fish passage
Work should be done as quickly and with the least disturbance possible
Vehicles and machinery must operate outside the wetland
When complete, everything is removed from site and no flooding, erosion, scouring, land instability or property damage is caused
All machinery and equipment that has been in watercourses is water blasted/chemically treated before being brought on site and following completion
Hours of work are from 7.00 am to 7.00 pm, Monday to Saturday and not on public holidays.
All work must comply with the New Zealand Electrical Code of Practice for Electrical Safe distances 34:2001 and the Electricity (hazard from trees) Regulations(2003)
Must take colour photographs no more than 20 working days prior to the start of work and following completion of work. Specific requirements and where these need to be sent are available from Mike.
Must notify a list of authorities (contact Mike for list) of the work to be done not less than 20 working days before starting (emergency and reactive work have different time frames). This must include several elements – check with Mike for details
Ensure there is no leakage of oil and other contaminants and no refuelling of machinery should occur onsite. If contamination happens, contact Mike immediately as there are specific steps which need to be taken

Otago region consent for work on structures on waterways (RM11.209.01)

Purpose: Region wide consent for maintenance works: to place/alter/remove structures that are fixed in, on, under or over the bed; to disturb any material; to clear debris or redistribute alluvium in order to safeguard the function or structural integrity of the structure; and to drill the bed of various watercourses for the purpose of maintaining state highway bridges, culverts and other structures

GENERAL RULES

Work must not be undertaken if the timing or location would adversely affect fish spawning or sensitive bird nesting or roosting
The clearance of alluvium is limited to three meanders upstream and downstream of a legal structure and only to minimise or prevent adverse effects to legal structures only
Any pits or holes formed during gravel clearance activities shall be filled in with gravel within two days
When finishing removing gravel, the areas disturbed are contoured to a natural bed form, consistent with the adjacent bed areas
No vegetation or storm debris or alluvium that has been removed shall be placed in the bed of the river where they:
divert, alter or constrain the flow of water from its natural course; or
block any navigable channel; or
obstruct or interfere with the free flow of flood waters in any flood; or
cause any significant adverse effect on aquatic life.
Erosion protection structures constructed and placed in the bed of a watercourse are no greater than 100 metres in length upstream and downstream of a bridge or culvert or 100 metres along a road
Riffles, runs and pools are reinstated where works in the watercourse alter or remove these features
Work must not cause obstruction to any waterway or reduce the hydraulic capacity of any bridge or culvert
The work must not impede fish passage
Where works are undertaken on the Waipahi river consideration shall be given to maintaining angler access, where practicable
Must take colour photographs no more than 20 working days prior to the start of work and following completion of work. Specific requirements and where these need to be sent are available from Mike
If artefacts of any sort are found work must stop immediately, and contact Mike for further info
Ensure there is no leakage of oil and other contaminants and no refuelling of machinery should occur onsite. If contamination happens, contact Mike immediately as there are specific steps which need to be taken.

Otago Regional consent for discharge of silt/sediment (RM.11.209.06)

Purpose: To discharge contaminants to coastal waters throughout the Otago region for the purpose of maintaining state highway bridges, culverts and other structures

GENERAL RULES

Must take all practical steps to minimise the release of sediment into water while disturbing the coastal marine area including:
undertaking works during low flows;
constructing and operating temporary diversions; and
operating machinery from the bank or foreshore, where possible
Must ensure that all practical measures are taken to prevent cement and cement products, from entering flowing water including:
avoiding flowing water come into contact with the concrete until concrete is firmly set
using boxing or other similar devices to contain wet cement during construction of the structure
ensuring that the handling of cement is undertaken in a manner that does not result in spillage into water
if any concrete is spilled beyond the boxing, pouring of concrete shall stop immediately and all concrete shall be removed from the water
No equipment used in the pouring of concrete to be washed out on site
No lawful take of water shall be adversely affected as a result of any discharge
Discharge does not give rise to any significant adverse effect on aquatic life
Must take colour photographs prior to, during and at the end of work. Specific requirements and where these need to be sent are available from Mike

To remove plant material from regionally significant wetland (RM.11.209.07)

Purpose: To remove plant material from regionally significant wetlands throughout the Otago region for the purpose of maintaining state highway bridges, culverts and other structures.

GENERAL RULES

20 working days prior to its commencement notice must be given to relevant authorities – contact Mike for specific details
The consent holder shall replant those sites where wetland plants have been removed with native species propagated from local seed sources within one month of completing the work

To maintain bridges, culverts and other structures (RM.11.209.08)

Purpose: Region wide consent: Temporarily diverting the flow of a waterbody, water from or within any regionally significant wetland – Willowburn Bog, or water that affects the water level for the purpose of the maintaining state highway bridges, culverts and other structures throughout the Otago region (excludes access culverts).

To place, alter, or remove structures fixed in, on, under or over the bed including the disturbance of materials and the clearance of debris or redistribution alluvium surrounding any structure to safeguard the function or structural integrity of the structure; and to drill the bed of various watercourses for the purpose of maintaining state highway bridges, culverts and other structures.

GENERAL RULES

Water must not be diverted into any other watercourse or onto land where it will enter another watercourse
The diversion of water must only occur once the diversion channel has been fully excavated, placed or constructed
The diversion must only remain in place while the works permitted by land use consent RM.111.209.01 are being undertaken. On completion of the work, the diversion shall cease and the site shall be returned to its natural state
Must slowly dewater and/or divert the works area and ensure that no fish become stranded. Stranded fish shall be removed replaced in flowing water downstream of the diversion
Must take colour photographs prior to, during and at the end of work. Specific requirements and where these need to be sent are available from Mike
lawful take of water should be adversely affected as a result of the diversion
Must ensure the diversion does not cause any flooding, erosion, scouring, land instability or damage of any other person's property

To discharge contaminants for bridges etc. blasting (RM.11.209.09)

Purpose: To discharge contaminants to air from abrasive blasting for the purpose of maintaining state highway bridges, culverts and other structures throughout the Otago region

GENERAL RULES

All abrasive blasting must be carried out within protective screens that enclose the structure or part of the structure being blasted as completely as possible. In the event of a visible discharge to air being observed beyond 20 metres from the point of discharge, work must stop until more effective screening is erected
In the event of lead based paint being removed from a bridge, work must comply with a standard equivalent to Australian Standard 454361. 1-7995 guide to lead paint management. This includes use of ground covers impermeable to air and water and total enclosure of the job with screens that are impermeable to air water
When work is complete, the entire enclosed area shall be cleaned using vacuum equipment or other methods that do not create dust to ensure paint flakes and other materials are not released into water or air
Any unused or waste material shall be kept covered or stored so that it can not be blown around by wind
All waste material and rubbish must be removed from the work site at the completion of each job
If the material to be blasted, removed or applied contains, or is thought to contain any toxic substance, contact Mike as there are steps which must be taken before work can begin
No discharge of dust or contaminants to air that is offensive or objectionable beyond 20 metres from the point of discharge