Consent conditions - Otago region consent for work on structures on waterways

Consent number RM11.209.01 - Otago region consent for work on structures on waterways conditions

 

Purpose: 

Region wide consent for maintenance works: to place, replace, alter, extend, reconstruct, demolish and remove structures that are fixed in, on, under or over the bed including the associated disturbance and deposition of materials; and to clear debris or redistribute alluvium from within, or immediately surroundings, any structure 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.

 

Conditions:

Specific

The works authorised by this consent shall be undertaken as described in the application for consent received by the consent authority on 29 July 2011. If there are any inconsistencies between the application and this consent, the conditions of this consent shall prevail. 

Works shall not be undertaken in the wet bed of any watercourse if the timing or location would adversely affect fish spawning or sensitive bird nesting or roosting unless it is reactive maintenance (defined as necessary repairs to the structure such as replacing decayed structural timbers or damage to the foundations critical to the safety and function of the structure). The presence of such factors shall be identified by schedule 1 of the regional plan: water for Otago and by the notification process required by condition 14 of this consent. 

The clearance of alluvium for the purpose of redistribution shall be limited in extent to three meanders upstream and downstream of a legal structure and shall be for the purpose of minimising/preventing adverse effects to legal structures only. 

  • (a)  any pits or holes formed during gravel clearance activities shall be filled in with gravel within two days of their formation.
  • (b)  on completion of each gravel clearance event, the consent holder shall ensure that 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 in accordance with this consent or structures that have been demolished or removed in accordance with this consent shall be placed in the bed of the river where they: 

  • (a)  divert, alter or constrain the flow of water from its natural course; or
  • (b)  block any navigable channel; or
  • (c)  obstruct or interfere with the free flow of flood waters in any flood; or
  • (d)  cause any significant adverse effect on aquatic life.


Erosion protection structures constructed and placed in the bed of a watercourse shall be no greater than 100 metres in length upstream and downstream of a bridge or culvert or 100 metres along a road. 

The consent holder shall ensure that riffles, runs and pools are reinstated where works in the watercourse alter or remove these features. 
Works undertaken on any bridge, culvert or erosion protection structure shall not cause obstruction to any waterway or reduce the hydraulic capacity of any bridge or culvert. 

The works authorised by this consent shall not impede fish passage unless consultation between the consent holder and the department of conservation indicates that it is necessary for the protection of indigenous or threatened fish species.  The consent holder shall notify the consent authority with sites where fish passage will be impeded prior to the works commencing. 
 

Performance monitoring

  • (a) where works are undertaken on the Waipahi river consideration shall be given by the consent holder to maintaining or enhancing angler access, where practicable.
  • (b) The consent holder shall provide a report to the consent authority prior to undertaking works on these rivers that shows the consideration given to maintaining or enhancing angler access and details of works to be undertaken to maintain or enhance angler access, where applicable.

The consent holder shall take colour photographs, no smaller than 200 x 150 millimetres, of all sites where work will/has been undertaken pursuant to this page 2 of 6 Otago Regional Council consent, which shall be accompanied by a description of the location of each site and the date the photographs were taken, as follows: 

  • (a)  no more than 20 working days prior to the start of works; and
  • (b)  following the completion of works and rehabilitation of the site. The photographs taken under (a) and (b) above shall be forwarded to the consent authority within one month of the final photographs being taken.
  • (c)  any damage of the riverbank or riparian system shall be reinstated to a quality and natural profile at least equivalent to that prior to the works commencing within one month of completion of the works
  • (d)  vehicles and machinery shall, as far as practicable, operate outside the wet bed of rivers.
  • (e)  at the completion of the works authorised by this consent, the consent holder shall ensure that all plant, equipment, chemicals, fencing, signage, debris, rubbish and any other material brought on site is removed from the site. The site shall be tidied to a degree at least equivalent to that prior to the works commencing.

The consent holder shall ensure that once completed the works authorised by this consent do not cause any flooding, erosion, scouring, land instability or property damage.

All machinery and equipment that has been in watercourses shall be water blasted and treated with suitable chemicals or agents prior to being brought on site and following completion of the works, to reduce the potential for pest species being introduced to or taken from the watercourses, such as didymo. At no time during the exercise of this consent shall machinery be washed within the bed of a watercourse.

If the consent holder:

  • (a)  discovers koiwi tangata (human skeletal remains), or maori attefact material, the consent holder shall without delay:(i)  notify the consent authority, tangata whenua and New Zealand historic places trust and in the case of skeletal remains, the New Zealand police.(ii)  stop work within the immediate vicinity of the discovery to allow a site inspection by the New Zealand historic places trust and the appropriate runanga and their advisors, who shall determine whether the discovery is likely to be extensive; if a thorough site investigation is required and whether aãƒå½ archaeological authority is required.(iii)  any koiwi tangata discovered shall be handled and removed by tribal elders responsible for the tikanga (custom) appropriate to its removal or preservation. Site work shall recommence following consultation with the consent authority, the New Zealand historic places trust, tangata whenua, and in the case of skeletal remains, the nz police, provided that any relevant statutory permissions have been obtained.
  • (b)  discovers any feature or archaeological material that predates 1900, or heritage material, or disturbs a previously unidentified archaeological or heritage site (including maori, european/pakeha or chinese origin), the consent holder shall without delay:(i)  stop work within the immediate vicinity of the discovery or disturbance; and(ii)  advise the New Zealand historic places trust, and in the case of Maori features or materials, the tangata whenua, and if required, shall make an application for an archaeological authority pursuant to the historic places act 1993; and(iii)arange for a suitably qualified archaeologist to undertake a survey of the site. Site work shall recommence following consultation with the consent authority

During the exercise of this consent, the consent holder should ensure that fuel storage tanks and machinery working and stored in the construction area are maintained at all times to prevent leakage of oil and other contaminants into the watercourse. No refuelling of machinery should occur within the watercourse. In the event of contamination, the consent holder should undertake remedial action and notify the consent authority within 5 working days.