LAND INFORMATION NEW ZEALAND

BIOSECURITY CONTROL PROGRAMME 2014/15 ANNUAL REPORT

CANTERBURY REGION

Prepared for and on behalf of LINZ by:

Boffa Miskell Ltd Ground Floor 4 Hazeldean Road PO Box 110 Christchurch 8140, New Zealand Telephone: +64 3 366 88 91 ______Marcus Girvan Date: 27 July 2015 Project Manager, LINZ Biosecurity Reference: C14086 Boffa Miskell Ltd Status: Final

Reviewed by:

______Phil Millar Principal Boffa Miskell Ltd

Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

Table of Contents

1.0 LIST OF LAND DEFINITIONS ...... 1 1.1 Crown Riverbed and Crown Lakebed ...... 1 1.2 Marginal Strips ...... 1 1.3 Road and Esplanade Reserves ...... 1 1.4 Ad Medium Filum Aquae Rights ...... 1

2.0 INTRODUCTION ...... 2 2.1 Contents of this Report ...... 2

3.0 UNDERTAKING CONTROL ...... 3 3.1 Directed or indicated as a priority by Government .. Error! Bookmark not defined.

4.0 PRIORITY CONTROL AREAS ...... 4

5.0 COMPLIANCE WITH RESOURCE CONSENTS ...... 5

6.0 LIAISON WITH LANDOWNERS / AGENCIES ...... 7

27 July 2015 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

PART ONE: OVERVIEW

Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

1.0 LIST OF LAND DEFINITIONS Land Information New Zealand (LINZ) manages over 5,000 properties across New Zealand. These properties total almost two million hectares, which is around 8% of New Zealand’s land area. Examples of these properties include:

 High country pastoral leases in the South Island  Crown forest licensed land  Former railway properties  The beds of many lakes and rivers

LINZ is responsible for biosecurity on land under its management. These are typically areas of unalienated land, such as lakebeds and riverbeds

1.1 Crown Riverbed and Crown Lakebed Land referred to in this report that is managed by LINZ on behalf of the Crown is referred to as Crown land.

In riverbeds, Crown land is often not clearly identified. When undertaking pest control programmes, LINZ applies the following criteria:

1.2 Marginal Strips Marginal Strips are lands of the Crown that are generally adjacent to riverbeds and are administered by the Department of Conservation (DOC). LINZ does not have responsibilities on Marginal Strips.

1.3 Road and Esplanade Reserves Road and Esplanade Reserves are land administered by territorial authorities adjacent to riverbeds (being district councils or unitary authorities). LINZ does not have responsibilities on Road or Esplanade Reserves.

1.4 Ad Medium Filum Aquae Rights In areas where a river abuts a property, the adjoining landowner may own the riverbed to the centre of the river. This is a common law right (unless rebutted) and is known as an ad medium filum aquae (AMF) right. Research has shown that AMF rights are prevalent in South Island braided river systems. LINZ does not have responsibilities on AMF areas.

Page 1 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

2.0 INTRODUCTION LINZ has responsibilities for managing the control of pests on Crown land. For LINZ biosecurity, Crown land generally comprises of areas of braided river or lake bed.

Crown land is subject to high public use and is frequently disturbed, with such circumstances providing ideal habitat for the establishment of many pest species. Such pests can threaten adjoining farmland and conservation land and may also act as sources of new infestations, re-infestation on pest free land, and more generally as a constant source of seed. Given this risk, LINZ undertakes control works to manage pest populations at many sites.

Regional Pest Management Strategies (RPMS), which are developed by regional councils under the Biosecurity Act 1993, establish priorities and mechanisms to control various pest species. In the RPMS’s, some pests are classified according to their threat to economic values, whilst others have been classified according to their threat to conservation or biodiversity values. The Crown is not currently bound to comply with RPMS’s (although recent amendments to the Biosecurity Act 1993 mean that LINZ may soon be required to comply with good neighbour rules), but LINZ strives to act in accordance with RPMS where possible and act as a good neighbour.

Pest control programmes undertaken by LINZ aim to initially reduce infestations of pests to low levels so that ongoing control is at a maintenance level. This strategy reduces ongoing costs and ensures previous pest control investments are protected.

2.1 The Role of Boffa Miskell Ltd Boffa Miskell Limited (BML) was appointed as service provider to LINZ and is responsible for the management and coordination of biosecurity services (pest control) on Crown land. BML assumed the management of these services on 1 July 2009, and as of 1 July 2014 has been further engaged in a partnership with LINZ until 2021.

BML’s role includes the following key tasks:

 Site inspections  Preparation of annual pest control programmes  Liaison and consultation with interested parties and stakeholders  Preparation of tenders and contracts for the engagement of pest control contractors  Monitoring and inspection of operations  Monitoring of resource consent compliance  Preparing annual reports on control works operations at various sites  Reporting on other issues relevant to biosecurity operations

2.2 Contents of this Report This report identifies pest control operations carried out on Crown land in Canterbury for the financial period of 1 July 2014 to 30 June 2015. During this period, control works operations undertaken included the following:

 Aerial spot and boom spraying of gorse, broom, old man’s beard, other woody weeds and the lake weed species Lagarosiphon major by helicopter and boat-based submerged boom  Ground and vehicle based spraying of gorse, broom, nodding thistle, old man’s beard and other woody weeds  Ground based mechanical removal and spraying of wilding conifers  Ground grubbing of Nassella tussock  Diver hand-weeding and suction dredging of Lagarosiphon major

Page 2 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

 Rabbit control via pesticides and shooting

3.0 UNDERTAKING CONTROL LINZ’s biosecurity annual programme is implemented across New Zealand, and accordingly the need for individual programmes must be balanced against other priorities nationally. LINZ may respond to a biosecurity issue based on several considerations which are outlined below.

LINZ may not undertake control works in some circumstances, which include the following:

 If the pest identified is not on Crown land  The land in question is under a lease/license or subject to an interest which places responsibility on the lessee or licensee to manage the pest(s)  The pest falls under other agencies’ or councils’ overriding national or regional jurisdiction

LINZ may undertake control works in some or all of the following circumstances where:

 Directed or indicated as a priority by Government  Control works have been carried out historically and ongoing maintenance is required to ensure previous gains in the reduction of the pest are retained  The pest has been identified under a RPMS, and where the pest has been specifically identified as a high priority or strategic pest under the regions RPMS  The pest is spreading from Crown land to adjacent land, of which that landowner is controlling the pest (LINZ is exacerbating the pest problem)  LINZ is a signatory to an Agreement or Memorandum of Understanding which commits LINZ to assisting with control  Other parties are contributing to the control of a pest in a coordinated and comprehensive manner  The pest is listed in the National Pest Plant Accord  The control works are realistically able to be sustained or built on in future years  The control will assist in New Zealand’s ability to host international events which contribute to New Zealand’s economy  A cost/benefit exercise has identified that the benefits of control greatly exceed the costs

Page 3 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

4.0 PRIORITY CONTROL AREAS Sites treated in the 2014/15 season were selected on the basis of recommendations by BML, consultation with interested parties and subsequent agreement and sign off by LINZ.

Gorse, broom and Nassella control and containment was identified as being the highest priority. Several non-RPMS pests such as wilding conifers and lagarosiphon were also high priority in areas where they posed a significant threat to the landscape or agricultural, ecological and amenity values.

Additionally, high priority was afforded to several other programmes including where adjacent landowners have grouped together to undertake a more comprehensive weed control programme of which Crown land forms a component of the control or management area. It is in such circumstances where LINZ seeks to act as a good neighbour and steward of the land it manages.

Other programmes were generally undertaken on the basis of the ability to maintain pest free areas and build on previous pest control efforts, the ability to reduce the impacts of external infestations, and where budgets allow the continuation or expansion of the control site area.

Page 4 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

5.0 COMPLIANCE WITH RESOURCE CONSENTS LINZ holds the below resource consents and certificates of compliance to enable it to undertake the vegetation and rabbit control works in the Canterbury region.

1. Consent to discharge herbicides onto land in circumstances where they may enter water.

Consent No: Issued by: Expiry Date: CRC040809.3 ECAN 18 August 2015

Relevance: Control of terrestrial weeds on LINZ administered land using herbicide.

2. Consent to discharge contaminants onto surface water.

Consent No: Issued by: Expiry Date: CRC084253.1 ECAN 17 February 2019

Relevance: Control of Lagarosiphon in Lake Benmore

3. Consent to disturb the bed and banks of lakes and rivers

Consent No: Issued by: Expiry Date: CRC093849.1 ECAN 10 August 2019

Relevance: Mechanical control (Suction dredging) to control Lagarosiphon in Lake Benmore.

4. Consent to discharge contaminants onto land where they may enter surface water.

Consent No: Issued by: Expiry Date: CRC102512 ECAN 4 May 2020

Relevance: Rabbit control using 1080 and pindone poisons in the Tekapo Riverbed

5. Certificate of Compliance to discharge contaminants onto land where they may enter surface water.

CoC No: Issued by: Expiry Date: CRC111532 ECAN

Relevance: Rabbit control using 1080 and pindone poisons in the Tekapo Riverbed via ground-based application

6. Consent to discharge contaminants onto land where they may enter surface water.

Consent No: Issued by: Expiry Date: CRC073616.1 ECAN 20 May 2018

Page 5 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

1. Consent to discharge herbicides onto land in circumstances where they may enter water.

Relevance: Rabbit control using 1080 and pindone poisons in the Hurunui Riverbed

7. Certificate of Compliance to discharge contaminants onto land where they may enter surface water.

CoC No: Issued by: Expiry Date: CRC111618 ECAN

Relevance: Rabbit control using 1080 and pindone poisons in the Ahuriri Riverbed via ground-based application

8. Consent to discharge contaminants onto land where they may enter surface water.

Consent No: Issued by: Expiry Date: CRC093583 ECAN 26 May 2019

Relevance: Rabbit control using 1080 and pindone poisons in the Waipara Riverbed

9. Consent to discharge contaminants onto land where they may enter surface water.

Consent No: Issued by: Expiry Date: CRC093584.1 ECAN 21 May 2019

Relevance: Rabbit control using 1080 and pindone poisons in the Waitaki and Otiake Riverbeds

Page 6 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

6.0 LIAISON WITH LANDOWNERS / AGENCIES On behalf of LINZ, BML undertakes ongoing liaison, consultation and notification with various parties in accordance with resource consents and obligations to LINZ. BML also require their contractors who deliver the physical control works, to notify adjacent land holders and other interested parties as appropriate with a sufficient notification period.

BML liaised with the following parties in the Canterbury region in the course of developing control works programmes for the financial year:

 Environment Canterbury (ECan)  The Department of Conservation  Waitaki Shorelines Management Group  The Upper Rangitata Landcare Group  Whitcombe Landcare Group  Te Runanga o Ngai Tahu and Papatipu Runanga  Mackenzie District Council  Canterbury Beekeepers Association  Public Health Canterbury  Federated Farmers  Meridian Energy  Forest & Bird  Fish & Game  BRaid (Braided River Aid)  Project River Recovery  Adjacent landowners

Page 7 Annual Report LINZ Biosecurity Control Programme 2014/15 Canterbury Region

PART TWO: CONTROL WORKS

Legend Ground94055_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Ahuriri River • Aerial and ground herbicide control of broom and gorse Site: Downstream of SH8 Road Bridge was carried out at this site. • Approximately 7.5 hectares of aerial boom spraying was District: Waitaki carried out, treating mainly gorse patches on the edges of Region: Canterbury the river and islands in the lower end of the site. Reference: 94055_2 • Ground control concentrated on spraying under willow trees where aerial application could not be achieved. Pest: Gorse

Treatment method: Helicopter, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 21/01/2015 The Ahuriri River is heavily infested with gorse, however Actual End Date: 23/04/2015 excellent progress has been made over the last few years. Site area: 218.2ha Next season it is proposed that ground control is utilised to achieve a maintenance status at this site.

Page 9 Legend Ground94012_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 4 8 12 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Ashburton River • Ground herbicide control of broom and gorse was carried Site: South Branch, upstream of out at this site. Hakatere • Low densities in the upper reaches gradually increase District: Ashburton downstream to heavy infestations. Region: Canterbury • Work was coordinated by ECan in conjunction with DOC Reference: 94012_2 funding. • Approximately 350 man hours of ground control work was Pest: Briar Rose, Broom, Gorse, Willows carried out. (all species) Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 26/01/2015 Further ground control will be required next season to Actual End Date: 13/02/2015 maintain low current infestation levels, concentrating Site area: 158.3ha significant resources into the lower end of the site.

Page 10 Legend Ground94039_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2 4 6 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Ashley River • 144 man hours of ground herbicide control of broom and Site: Upstream of the Whistler River gorse was carried out at this site. confluence • The infestation consisted of scattered broom in the upper District: Waimakariri reaches down to Wharfdale Road. Region: Canterbury • Below Wharfdale Road the infestation increases markedly. Reference: 94039_1 Pest: Broom, Gorse

Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 10/02/2015 Follow up control will be required next season to maintain a Actual End Date: 17/02/2015 low density of broom at this site. Site area: 343.5ha

Page 11 Legend Ground94026_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Boyle River • Aerial herbicide control of broom and gorse was once again Site: Hope confluence to SH7 bridge carried out at this site. • Approximately 36 hectares of aerial control was carried out. District: Hurunui • Broom and gorse regrowth was thick in places this season. Region: Canterbury Reference: 94026_1 Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 29/01/2015 Ground control is recommended in the 2015/16 season to Actual End Date: 20/02/2015 continue treating scattered plants. Site area: 251.5ha

Page 12 Legend Ground94026_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.7 1.4 2.1 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Boyle River • Medium infestation of regrowth gorse and broom on Boyle Site: Magdalen Valley River flats. • Half boom and full boom spraying of large patches treated District: Hurunui on river bed. Region: Canterbury • 20 hectares was treated in total. Reference: 94026_2 Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 29/01/2015 Follow up control will be required next season by the Actual End Date: 29/01/2015 adjoining landowner. Site area: 80.3ha

Page 13 Legend Ground94099_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Charwell River • The broom and gorse infestation at this site was reasonably Site: Upstream of Inland Kaikoura Road light from the start in the gorge where the ground control contractor started control. District: Hurunui • All work was carried out with a combination of hose and Region: Canterbury gun and knapsack sprayers. Reference: 94099_1 Pest: Broom, Gorse

Treatment method: Knapsack, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/02/2015 Due to low densities of gorse and broom, ground control Actual End Date: 04/02/2015 work will be next carried out in 2016/17. Site area: 46.1ha

Page 14 Legend Ground94095_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Clarence River • The Nassella infestation in the Clarence River is very sparse Site: Waiautoa to SH1 with only 150 plants found. • A large patch was found on the south side of Glen Alton District: Kaikoura bridge (left side). Region: Canterbury • All plants found were destroyed by way of grubbing. Reference: 94095_2 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 07/08/2014 Control will be necessary at this site next season to ensure Actual End Date: 08/08/2014 Nassella numbers are kept at very low levels. Site area: 440.7ha

Page 15 Legend Ground94095_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2 4 6 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Clarence River • Aerial boom and spot spray control was carried out Site: Lower Clarence - Matai Flat to sea covering 32 hectares. • 126 hours of ground control was carried out concentrating District: Kaikoura on thicker patches where aerial control had not been used. Region: Canterbury • Moderate to low levels of scattered gorse, broom and old Reference: 94095_3 man’s beard exist at this site. Pest: Broom, Gorse, Old Man’s Beard

Treatment method: Helicopter, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 15/09/2014 Next season it is proposed that a combination of ground Actual End Date: 28/10/2014 and aerial control is carried out from Matai Point to the Site area: 1089.5ha State Highway 1 bridge and a section around Rod Fisher’s property to control scattered plants and maintain the current low infestation levels.

Page 16 Legend Ground94095_4 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 6 12 18 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Clarence River • Approximately 168 hectares of aerial boom and spot spray Site: Mid Clarence control work was carried out at this site. • ECan managed a collaborative control programme, with District: Marlborough, Kaikoura contributors including the Kaikoura Zone Committee, ECan, Region: Canterbury DOC, LINZ and a number of adjoining land owners. Reference: 94095_4 • Broom gall mite was released in this catchment to supplement the herbicide control programme. Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 23/09/2014 Follow up control work will be required next season to Actual End Date: 05/11/2014 capitalise on this well funded and coordinated control Site area: 1529.8ha programme.

Page 17 Legend Ground94103_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.6 1.2 1.8 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Coal River • Gorse and broom was sprayed using hose and gun Site: Upstream of Lilybank Road spray trucks, starting at the top of the site and travelling downstream. District: Mackenzie • Higher infestation levels exist in the DOC area upstream of Region: Canterbury this site. Reference: 94103_1 Pest: Broom, Gorse

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 22/01/2015 Follow up works will be required in the 2016/17 season to Actual End Date: 23/01/2015 further reduce the infestation levels and to maintain the Site area: 53.9ha control carried out this season.

Page 18 Legend Ground94097_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 3 6 9 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Conway River • Ground grubbing of Nassella was undertaken this season Site: Lower reaches downstream of removing 200 plants and further reducing the infestation Inland Road levels at this site. District: Hurunui • The nature of the infestation of old man’s beard in the Region: Canterbury Conway River is relatively scattered across the whole site. Reference: 94097_1 • One small patch of old man’s beard was found and controlled by ground contractors spending approximately 34 Pest: Nassella Tussock, Old Man’s Beard hours working on site. Treatment method: By hand, Mistblower, Cut and paste Application method: Herbicide, Mechanical Proposed Future Work: Actual Start Date: 12/08/2014 Control work of a similar nature will be required next Actual End Date: 03/02/2015 season to maintain a low density of Nassella and old man’s Site area: 609.5ha beard.

Page 19 Legend Ground94010_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2 4 6 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Esk River • Aerial spot and boom spraying of broom and gorse was Site: Upper Esk, including Flora, Nigger once again carried out at this site. and Lochinvar • The infestation consisted of small scattered regrowth. District: Selwyn • Approximately two hectares of aerial control work was Region: Canterbury carried out. Reference: 94010_1 Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 10/03/2015 Follow up control will be required next season to maintain Actual End Date: 10/03/2015 the low density of broom and gorse. Site area: 353.7ha

Page 20 Legend Ground94016_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Forest Creek • Ground spraying of gorse, broom, willows, lupins, and false Site: Upstream of Rangitata River tamarisk was undertaken near the confluence of Forest confluence Creek and the Rangitata River up to approximately 1.5km District: Timaru, Mackenzie above the bridge. Region: Canterbury • Limited regrowth of woody weeds are present in Forest Reference: 94016_1 Creek, however due to the strategic importance of this site in relation to the Rangitata River operation, annual inspection Pest: Broom, Gorse, Lupin, Willows (all and treatment is necessary. species) Treatment method: Knapsack, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 15/10/2015 Next season, control work should continue throughout this Actual End Date: 05/03/2015 site to inspect and treat plants over its full extent. This will Site area: 230.5ha ensure low infestation levels are maintained across the site.

Page 21 Legend Ground94044_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2.5 5 7.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Harper River • Scattered broom and gorse was treated at this site in the Site: Upstream of control gates 2014/15 season via ground control. • This site has been treated every second year due to the District: Selwyn relatively low level of weeds. Region: Canterbury • A good level of control was achieved this season. Reference: 94044_1 Pest: Gorse

Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 28/01/2015 It is proposed that further work is carried out in the Actual End Date: 30/04/2015 2016/17 season to continue this site on a two-year Site area: 267.1ha maintenance cycle.

Page 22 Legend Ground94047_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Hope River • Aerial herbicide control of broom and gorse was once again Site: Upstream of Hope Road Bridge to carried out at this site. Boyle Confluence • Approximately two hectares of aerial control work was District: Hurunui carried out. Region: Canterbury Reference: 94047_1 Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 20/02/2015 Aerial spraying over recent years has now made significant Actual End Date: 20/02/2015 inroads into the infestation in this river. Maintenance work Site area: 241.8ha via ground control methods will be utilised in the 2015/16 season.

Page 23 Legend Ground94003_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Hurunui River • The control works carried out in this season were the Site: Lower Hurunui (Downstream of continuation of aerial and ground spraying. SH1) • A total of 3.5 hectares were treated aerially, and 145 hours District: Hurunui of ground control was carried out. Region: Canterbury • The lower Hurunui River has some medium to high Reference: 94003_1 infestations of old man’s beard, particularly below the State Highway 1 bridge on the true left of the river. Pest: Old Man’s Beard • Control within the riverbed is good however issues with the flood protection trees means heavy infestations along the Treatment method: Helicopter, Knapsack, Gun and sides remain untreated. Hose, Cut and paste Application method: Herbicide Proposed Future Work: Actual Start Date: 16/02/2015 Scattered infestations require aerial and ground follow up Actual End Date: 12/03/2015 next season. Contractors will again need to liaise closely Site area: 756.7ha with ECan to avoid non-target impacts on river protection plantings as a result of this work.

Page 24 Legend Ground94003_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 3 6 9 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Hurunui River • This season approximately 70 hours control of gorse and Site: Entire South Branch broom was undertaken using mistblowers. • Gorse is lightly scattered in the upper reaches, with thicker District: Hurunui broom in the lower reaches down towards the bridge. Region: Canterbury • Considerable progress has been made in controlling gorse Reference: 94003_2 and broom in the South Branch of the Hurunui River over the last ten years. Pest: Broom, Gorse

Treatment method: Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 17/03/2015 Control work of a similar nature will be required next Actual End Date: 18/03/2015 season to maintain existing controlled areas, mainly Site area: 163.9ha seedling regrowth.

Page 25 Legend Ground94003_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 4 8 12 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Hurunui River • This season 225 hours of ground control was undertaken Site: Entire North Branch using mistblowers, complementing control works carried out on adjacent properties. District: Hurunui • Gorse was present at moderate levels at the inlet of Lake Region: Canterbury Sumner, with heavy infestations from the South Branch Reference: 94003_3 confluence to Sisters Stream. Pest: Broom, Gorse

Treatment method: Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/03/2015 This site is on a two-year maintenance cycle. Next season Actual End Date: 12/03/2015 some aerial work may be required to control gorse and Site area: 323.3ha broom towards the bottom end of the site.

Page 26 Legend Ground94003_6 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 7 14 21 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Hurunui River • The Hurunui River Nassella infestation ranges from very Site: Mandamus River confluence to sparse plants in some areas to some reasonably dense areas. the sea • Approximately 3742 plants were found and grubbed by the District: Hurunui contractor this season. Region: Canterbury Reference: 94003_6 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 12/08/2014 Control work of a similar nature will be required next Actual End Date: 20/08/2014 season to maintain a low density of Nassella. Site area: 2729ha

Page 27 Legend Ground94096_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Kahutara River • The contractor carried out approximately 80 hours of gorse Site: Upper Kahutara River and broom control using mistblowers and gun and hose this season. District: Kaikoura, Hurunui • Plants were treated from the main road bridge to the top of Region: Canterbury the LINZ boundary in the Kahutara, and around the tributary Reference: 94096_1 confluences. • There appears to be a significant broom seed bank Pest: Broom, Gorse originating from the Kahutara tributaries creating a source of seedlings downstream. Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 04/05/2015 Continued maintenance control will be required at this site Actual End Date: 07/05/2015 to ensure plants do not seed, and also carrying out control Site area: 253ha work in the main tributaries of this site which appears to be a significant seed source.

Page 28 Legend Ground94096_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Kahutara River • Ground grubbing of Nassella was undertaken this season Site: Lower Kahutara River removing 85 plants and further reducing the infestation levels at this site, down from 163 last season. District: Kaikoura Region: Canterbury Reference: 94096_2 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 01/08/2014 Continued maintenance control will be required at this site Actual End Date: 01/08/2014 to ensure plants do not seed. Site area: 356.5ha

Page 29 Legend Ground94054_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.7 1.4 2.1 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Kowai River • This site was searched on foot this season and 86 tussocks Site: North Branch - Douglas Road to were destroyed by ground grubbing methods. Lawcocks Road • This level of control is slowly reducing the density of District: Hurunui Nassella at this site. Region: Canterbury Reference: 94054_2 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 11/08/2014 Further control work will be required in the 2015/16 season Actual End Date: 11/08/2014 in order to continue to reduce the density of Nassella at this Site area: 60.6ha site.

Page 30 Legend Ground94106_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.6 1.2 1.8 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Aviemore • Following a lagarosiphon incursion found in Loch Laird on Site: Entire Lake 20 March 2014, this site has been regularly checked using divers. District: Waimate, Waitaki • Four hours of surveying this site found numerous small Region: Canterbury plants at known sites, which were carefully removed. Reference: 94106_1 • This work was carried out in conjunction with Meridian Energy Limited. Pest: Lagarosiphon Major

Treatment method: Diver

Application method: Mechanical Proposed Future Work: Actual Start Date: 21/11/2014 It is proposed that Loch Laird is surveyed at least twice in Actual End Date: 21/05/2015 the 2015/16 season to ensure against any regrowth at Site area: 69ha the known infestation sites and to search for any other potential infestations.

Page 31 Legend Ground94037_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • 32 hecatres of lagarosiphon was treated in 2015. Site: Ahuriri Delta • Half gel rates were used due to the majority of the weed bed being surface-reaching. District: Waitaki • Good results are being achieved with a continued reduction Region: Canterbury in lagarosiphon biomass. Reference: 94037_1 • Work carried out in conjunction with Meridian Energy Limited. Pest: Lagarosiphon Major

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/03/2015 Further aerial herbicide control will be required in the Actual End Date: 03/03/2015 2015/16 season to continue to suppress lagarosiphon at Site area: 173ha this site.

Page 32 Legend Ground94037_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Six hectares of lagarosiphon was controlled via helicopter Site: Ahuriri Arm along the southern shoreline in the Ahuriri Arm using diquat in gel form at standard rates. District: Waitaki • Work carried out in conjunction with Meridian Energy Region: Canterbury Limited. Reference: 94037_2 Pest: Lagarosiphon Major

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/03/2015 Further herbicide control will be required in 2015/16 to Actual End Date: 03/03/2015 continue to suppress lagarosiphon and reduce its spread. Site area: 92.2ha

Page 33 Legend Ground94037_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Four hectares of lagarosiphon was controlled via helicopter Site: Sailors Cutting and 1.25 hectares was treated via boat. • The boat was utilised around sensitive areas such as District: Waitaki moored boats and jetties. Region: Canterbury • Work carried out in conjunction with Meridian Energy Reference: 94037_3 Limited. Pest: Lagarosiphon Major

Treatment method: Helicopter, Boat

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/03/2015 Further herbicide control will be required in 2015/16 to Actual End Date: 03/03/2015 continue to suppress lagarosiphon at this high-priority site. Site area: 1.4ha

Page 34 Legend Ground94037_4 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Five hectares of lagarosiphon was controlled via boat Site: The Neck Zones 3 & 4 submerged boom using diquat in gel form. • Some limited diver-injection herbicide application was District: Waitaki utilised to treat some topped-out weed beds in strategically Region: Canterbury important locations. Reference: 94037_4 • This work was carried out in conjunction with Meridian Energy Limited. Pest: Lagarosiphon Major

Treatment method: Boat

Application method: Herbicide Proposed Future Work: Actual Start Date: 03/03/2015 Control in the 2015/16 season may include suction Actual End Date: 03/03/2015 dredging of the areas sprayed to remove dessicated Site area: 143.4ha biomass. Further spraying of weed beds will be likely.

Page 35 Legend Ground94037_5 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Four hectares of lagarosiphon was controlled via boat Site: The Neck Zone 2 submerged boom using diquat in gel form. • Some limited surface herbicide application was utilised to District: Waitaki treat weed along the shoreline which couldn’t be accessed Region: Canterbury by boat. Reference: 94037_5 • 15 hours of hand weeding and survey work was carried out to remove all biomass from Turnagain Island. Pest: Lagarosiphon Major • This work was carried out in conjunction with Meridian Energy Limited. Treatment method: Diver, Boat

Application method: Herbicide, Mechanical Proposed Future Work: Actual Start Date: 10/09/2014 Control in the 2015/16 season may include suction Actual End Date: 03/05/2015 dredging of the areas sprayed to remove dessicated Site area: 80.9ha biomass. Further spraying may be required along with diver-based control.

Page 36 Legend Ground94037_6 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Approximately 1.5 hectares of aerial spraying and 1.25 Site: The Neck Zone 1 hectares of boat spraying was carried out at this site. • Two barge loads and 86 catch bags of weed was removed District: Waitaki via suction dredging and hand weeding over 25 days. Region: Canterbury • Work carried out in conjunction with Meridian Energy Reference: 94037_6 Limited. Pest: Lagarosiphon Major

Treatment method: Diver, Helicopter, Boat

Application method: Herbicide, Mechanical Proposed Future Work: Actual Start Date: 24/11/2014 Further hand weeding will be required next season to clear Actual End Date: 21/05/2015 all lagarosiphon from Zone 1. Site area: 228.9ha

Page 37 Legend Ground94037_7 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Approximately 13 days of hand weeding / surveying was Site: Haldon Bay carried out. • 39 catch bags of weed were removed. District: Waimate, Waitaki • Only scattered and isolated plants removed this season. Region: Canterbury • Work carried out in conjunction with Meridian Energy Reference: 94037_7 Limited. Pest: Lagarosiphon Major

Treatment method: Diver

Application method: Mechanical Proposed Future Work: Actual Start Date: 04/09/2014 Further surviellance will be required at this site in the Actual End Date: 26/02/2015 2015/16 season. This site is a high priority given its Site area: 46.6ha proximity to the Benmore Dam and risk of lagarosiphon transmission to the other Waitaki lakes.

Page 38 Legend Ground94037_8 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Benmore • Seven days of and hand weeding / survey was carried out. Site: Haldon Arm • Approximately eight catch bags of weed was removed from this site. District: Waimate, Waitaki • Underwater cameras were utilised to identify weed. Region: Canterbury • Work carried out in conjunction with Meridian Energy Reference: 94037_8 Limited. Pest: Lagarosiphon Major

Treatment method: Diver

Application method: Mechanical Proposed Future Work: Actual Start Date: 28/04/2014 Further surveying of this site is proposed for the 2015/16 Actual End Date: 01/03/2015 season to ensure that lagarosiphon is kept at zero density. Site area: 44.2ha

Page 39 Legend Ground94023_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Pukaki • Scattered regrowth of wilding trees, nodding thistle and Site: Tekapo B Power Station to Pukaki briar were controlled at this site this season. High Dam • The site has been controlled for terrestrial weeds for some District: Mackenzie years now and therefore is in a maintenance phase. Region: Canterbury • Silver birch continues to be a problem, as does briar rose in Reference: 94023_1 the area where silver birch have been felled. Pest: Briar Rose, Nodding Thistle, Silver Birch, Wilding trees (multi species) Treatment method: Shooting

Application method: Herbicide Proposed Future Work: Actual Start Date: 08/12/2014 Further weed control will be required next season, with Actual End Date: 12/12/2014 night shooting of rabbits to ensure levels are kept below Site area: 132ha MMS3.

Page 40 Legend Ground94023_14 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Pukaki • Chainsaws and loppers were used to remove immature Site: Eastern Shoreline wilding trees in preparation for logging operations. • Seeding Pinus contorta, Douglas fir, Pinus ponderosa, larch District: Mackenzie and silver birch continue to be an issue at this site. Region: Canterbury Reference: 94023_14 Pest: Wilding trees (multi species)

Treatment method: Chainsaw, loppers

Application method: Mechanical Proposed Future Work: Actual Start Date: 06/05/2014 After logging operations have concluded, the site will Actual End Date: 07/07/2014 require follow up work to control seedling trees and other Site area: 205.3ha woody weeds.

Page 41 Legend Ground94023_16 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2.5 5 7.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Pukaki • A combination of ground mechanical, ground herbicide and Site: Western Shoreline from Pukaki aerial herbicide control was utilised this season. Downs to Twin Stream • Multiple species were targeted including wilding trees, District: Mackenzie gorse, broom, cotoneaster, poplar, rowan and alders. Region: Canterbury • A helicopter was utilised to spot-spray weed within large Reference: 94023_16 areas of slash, where ground control is not possible. Pest: Broom, Gorse, Wilding trees (multi species) Treatment method: Helicopter, Mechanical, Gun and Hose Application method: Herbicide, Mechanical Proposed Future Work: Actual Start Date: 21/07/2014 Continued large investments in ground and aerial control Actual End Date: 03/03/2015 will need to be made at this site in future seasons, due Site area: 274.2ha to felled trees increasing habitat for seedling regrowth. Mature Pinus contorta on adjoining land will continue to cause issues at this site.

Page 42 Legend Ground94092_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.7 1.4 2.1 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lake Waitaki • Ground control was carried out at this site using gun and Site: Eastern Shoreline hose as a follow up to the aerial spraying last season. • Approximately 19 man hours were spent on site. District: Waimate Region: Canterbury Reference: 94092_1 Pest: Broom, Gorse

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 04/03/2015 Follow up ground control and survelliance will continue at Actual End Date: 04/03/2015 this site in 2017/18. Site area: 20.9ha

Page 43 Legend Ground94001_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Lottery River • Approximately 25 hours of ground control was carried out Site: Upstream of Sherwood Lodge at this site, using knapsack sprayers. • Gorse and broom at this site is minimal in the upper District: Hurunui section and increases to high concentrations downstream. Region: Canterbury Reference: 94001_1 Pest: Broom, Gorse

Treatment method: Knapsack

Application method: Herbicide Proposed Future Work: Actual Start Date: 25/02/2015 It is proposed that further maintenance work is carried out Actual End Date: 25/02/2015 next season, concentrating on the lower section and resting Site area: 114.5ha the upper section.

Page 44 Legend Ground94014_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Maerewhenua River • Ground herbicide control of broom and gorse was carried Site: Entire North Branch out at this site, controlling a large amount of seedling gorse in the riverbed. District: Waitaki • Approximately 23 man hours of ground spray control work Region: Canterbury was carried out. Reference: 94014_3 Pest: Broom, Gorse

Treatment method: Helicopter, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 06/03/2015 Further ground and aerial control will be required at this Actual End Date: 06/03/2015 site next season to maintain low current infestation levels. Site area: 34ha

Page 45 Legend Ground94040_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Mason River • The infestation at this site is reasonably light from the start Site: Near Mount Lyford of the site upstream from Mason River Bridge, and gradually gets thicker further down the site. District: Hurunui • Approximately 35 hours of ground control was carried out Region: Canterbury using gun and hose. Reference: 94040_2 Pest: Broom, Gorse

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 23/02/2015 A continuation of control work will be required to maintain Actual End Date: 31/03/2015 the low levels of broom and gorse at this site next season, Site area: 51.6ha after which time this site may be placed on a two-year maintenance cycle.

Page 46 Legend Ground94040_4 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.6 1.2 1.8 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Mason River • Ground grubbing of Nassella was undertaken this season, Site: Wandle Bridge to Waiau River further reducing the infestation levels at this site. confluence • The site was searched on foot and any tussocks found were District: Hurunui destroyed. Region: Canterbury • A total of 60 Nassella tussock plants were located and Reference: 94040_4 removed, down from 87 last season. Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 11/08/2014 Further Nassella control work will be required in the Actual End Date: 11/08/2014 2015/16 season as to comply with the RPMS and to Site area: 152.1ha maintain low Nassella densities.

Page 47 Legend Ground94086_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: North Opuha River • Aerial and ground herbicide control of broom and gorse Site: Upper North Opuha River were carried out at this site. • Approximately 85 hours of ground control were carried District: Mackenzie out utilising gun and hose and knapsack sprayers, Region: Canterbury targeting scattered seedlings with some patches of heavier Reference: 94086_1 infestations. • Four hectares of gorse and broom were treated aerially. Pest: Broom, Gorse

Treatment method: Helicopter, Knapsack, Gun and Hose Application method: Herbicide Proposed Future Work: Actual Start Date: 26/01/2015 Further ground control work of a similar nature will be Actual End Date: 02/02/2015 required next season to maintain control of seedling Site area: 60.8ha regrowth.

Page 48 Legend Ground94022_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Ohau River • The site was controlled again in the 2014/15 season using Site: Ohau River to Lake Ruataniwha a hose and gun. Dam • The site is mostly clear of weeds although there is annually District: Mackenzie, Waitaki some seedling broom and gorse in the river. Region: Canterbury • Wilding trees continue to be a threat from neighbouring Reference: 94022_1 land where control is not being carried out. Pest: Broom, Gorse, Lupin, Willows (all species), Wilding trees (multi Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 19/01/2015 Control of emerging wilding trees, lupins, gorse and broom Actual End Date: 19/01/2015 seedlings may be required at this site in the 2015/16 Site area: 391.3ha season.

Page 49 Legend Ground94049_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Okuku River • The method of treatment for the Okuku River was Site: Above Stockyard Stream to Round mistblowers due to the low level of infestation and limited Hill access. District: Hurunui, Waimakariri • The weeds are very scattered in the upper reaches and only Region: Canterbury slightly thicker below the Okuku Pass Road into the gorge. Reference: 94049_1 • Approximately 65 man hours of ground control work was carried out. Pest: Broom, Gorse

Treatment method: Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 13/02/2015 Follow up control will be required to maintain a low density Actual End Date: 16/02/2015 of broom and gorse. It is possible the ground control crew Site area: 127ha may be able to carry out spraying throughout the entire operational area next season.

Page 50 Legend Ground94057_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Orari River • Ground control was carried out from the top of the site, Site: Upstream of Rocky Stream to with reasonable densities of broom seedlings in the riverbed Pickaxe Stream and marture plants on the river banks. District: Mackenzie • Work was carried out throughout the gorge where large Region: Canterbury patches of broom were evident. Reference: 94057_1 Pest: Broom, Gorse

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 13/01/2015 Work is scheduled to continue in the 2015/16 season, trying Actual End Date: 19/01/2015 to reduce sources of broom infestation that are evident on Site area: 88.1ha the river bank as well as seedlings in the riverbed.

Page 51 Legend Ground94033_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.6 1.2 1.8 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Otaio River • Approximately two hectares of aerial boom and half boom Site: Otaio River Upstream Otio Gorge spray control of gorse was carried out. • Large infestations of gorse exist on DOC-administered land District: Waimate upstream of the LINZ control site. Region: Canterbury Reference: 94033_1 Pest: Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 24/04/2015 Minimal maintenance control work will be required to Actual End Date: 24/04/2015 maintain the low levels of weeds at this site next season, Site area: 15.8ha however this work should be carried out in conjunction with DOC’s control programme.

Page 52 Legend Ground94030_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Poulter River • Aerial herbicide control of broom and gorse was once again Site: Upstream of the Mount White carried out at this site. Bridge • The area treated this season consisted of emerging gorse District: Selwyn over previously controlled areas. Region: Canterbury • Approximately 20 hectares of aerial boom spraying was Reference: 94030_1 carried out. Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 10/03/2015 Further control work will be required next season to Actual End Date: 20/03/2015 continue the good progress in controlling weeds at this site. Site area: 473.4ha Both sides of the river have established gorse infestations, and ECan is currently working to resolve this.

Page 53 Legend Ground94091_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Puhi Puhi River • Knapsack sprayers and hose and gun control works were Site: Jordan Stream confluence to 1km used to treat gorse, broom and old man’s beard. south of Puhi Puhi River bridge • Cutting and pasting was also used in places. District: Kaikoura • The occurrence of gorse and broom has been decreasing Region: Canterbury at this site in the past few years, however old man’s beard Reference: 94091_1 persists in moderate quantities, and is present in heavy densities on adjoining land. Pest: Old Man’s Beard

Treatment method: Knapsack, Gun and Hose, Cut and paste Application method: Herbicide Proposed Future Work: Actual Start Date: 02/02/2015 Control work of a similar nature will be required next Actual End Date: 09/02/2015 season to maintain control of old man’s beard regrowth. Site area: 61.5ha Banana passion vine and cathedral bell was found at this site this season, therefore these species should be included in the programme.

Page 54 Legend Ground94021_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2 4 6 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Pukaki River • Rabbit shooting along with broom and gorse control work Site: From below Dam to Tekapo River was carried out at this site this season. Confluence • A total of 89 rabbits were shot over two nights. District: Mackenzie • Ground spraying of gorse and broom took place to Region: Canterbury maintain a very low level of infestation at this site. Reference: 94021_1 Pest: Broom, Gorse, Rabbits

Treatment method: Gun and Hose, Shooting

Application method: Herbicide Proposed Future Work: Actual Start Date: 25/09/2015 Adjoining land has large areas of wilding trees (Pinus Actual End Date: 16/06/2015 contorta) present but little gorse and broom. No tree Site area: 929.9ha control is evident on neighbouring land which is a major threat to work carried out at this site. Continued gorse and broom control will need to be carried out next season.

Page 55 Legend Ground94007_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2.5 5 7.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Rakaia River • The gorse and broom infestation starts off very sparse in Site: Upper Rakaia the upper reaches of the site (opposite Prospect Hill) and gradually becomes more dense further downstream. District: Selwyn, Ashburton • From Walkers Island downstream to the confluence with Region: Canterbury the Mathais River is the most dense infestation, which was Reference: 94007_1 the focus of work this season. Pest: Broom, Gorse

Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 28/01/2015 Next season it is proposed that control starts at Prospect Actual End Date: 30/04/2015 Hill working south towards Double Hill. A combination Site area: 3916ha of aerial and ground control may be necessary. This work is carried out in conjunction with DOC, ECan and the Whitcombe Landcare Group.

Page 56 Legend Ground94007_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 4 8 12 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Rakaia River • Approximately 95 man hours of searching was carried out Site: Highbank Power Station to at this site. opposite Wolseley Rd • This season no Nassella plants were found and removed District: Selwyn, Ashburton by the contractor, however, a couple of small areas of Region: Canterbury Nassella were discovered by helicopter and grubbed by ECan Reference: 94007_3 representatives at a later date on some islands that were inaccessable to the contractor. Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 21/08/2014 More targeted control work will be required next season, Actual End Date: 22/08/2014 including searching of islands within the river. Site area: 3441.6ha

Page 57 Legend Ground94015_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 6 12 18 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Rangitata River • The majority of control work was carried out by ground this Site: Upper Rangitata River season. • The Potts River required significant work. District: Ashburton, Timaru • A number of weed species were targeted including wilding Region: Canterbury trees, false tamarisk and vipers bugloss. Reference: 94015_1 • This control programme aims to maintain the upper reaches of the river in a predominantly weed free state, and Pest: Briar Rose, Broom, Gorse, Lupin, to progressively bring the rest of the site under control. Willows (all species) • The operation is delivered in conjunction with the Upper Treatment method: Helicopter, Knapsack, Gun and Rangitata Gorge Landcare Group (URGLG), comprised of Hose DOC, ECan, LINZ and local runholders. Application method: Herbicide Proposed Future Work: Actual Start Date: 15/10/2015 A continued collaborative programme with the URGLG is Actual End Date: 17/06/2015 planned next season to build upon the good work achieved Site area: 5364.5ha over the past few seasons. Both aerial and ground control is proposed.

Page 58 Legend Ground94105_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Saltwater Creek • Ground control work using mistblowers was carried out at Site: Above SH1 this site with very low weed infestations present. District: Waimakariri Region: Canterbury Reference: 94105_1 Pest: Broom, Gorse

Treatment method: Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 25/03/2015 Further surveillance and control work may be required in Actual End Date: 25/03/2015 2017/18. Site area: 2.2ha

Page 59 Legend Ground94065_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Seaward River • This season aerial and ground control was carried out at Site: Entire River upstream of the this site. Hurunui confluence • Approximately 1.5 hours of aerial control was applied District: Hurunui treating two hectares, and 21 hours of ground control was Region: Canterbury carried out on lightly scattered weeds. Reference: 94065_1 Pest: Broom, Gorse

Treatment method: Helicopter, Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 10/03/2015 Follow up ground control will be required at this site next Actual End Date: 10/03/2015 season to continue the control of scattered broom seedlings Site area: 69ha and regrowth.

Page 60 Legend Ground94008_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Selwyn River • 101 man hours of ground control work was carried out this Site: Upper Selwyn between Fort season, concentrating on scattered patches. Jackson and Flagpole • Gorse and broom infestations increase further District: Selwyn downstream. Region: Canterbury Reference: 94008_2 Pest: Broom, Gorse

Treatment method: Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 18/02/2015 This site is currently on a two-year rotation, targeting Actual End Date: 20/02/2015 broom and gorse in the top section in year one, and the Site area: 137ha bottom section in year two. Ground control is again planned for the 2015/16 season.

Page 61 Legend Ground94104_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: South Ophua River • Approximately two hours of aerial boom and half boom Site: Upper South Opuha river spray control work was carried out. • Approximately two hectares was treated. District: Mackenzie • A larger area of broom was treated mid way up the Region: Canterbury riverbed. Reference: 94104_1 • The remainder of the site contained only scattered broom bushes. Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 29/01/2015 Further ground control will be required at this site next Actual End Date: 29/01/2015 season to maintain low current infestation levels. Site area: 53.4ha

Page 62 Legend Ground94011_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Swift River • Aerial herbicide control of broom and gorse was once again Site: Upstream of Ashburton River carried out at this site. North Branch • The infestation consisted of mainly small seedling gorse. District: Ashburton • Approximately 3.5 hectares of aerial control work was Region: Canterbury carried out. Reference: 94011_1 Pest: Broom, Gorse

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 21/01/2015 Follow up aerial control will be required next season to Actual End Date: 22/01/2015 maintain existing low infestations. Site area: 94.9ha

Page 63 Legend Ground94046_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 6 12 18 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Tekapo River • Ground based 1080 carrot was used to control a rabbit Site: All Tekapo River population of MMS4 on the true left of the river adjoining Grays Hills. District: Mackenzie • Approximately 233 rabbits were shot in evening and night Region: Canterbury shooting at this site over one night. Reference: 94046_1 • Rabbit densities are generally low, however higher densities exist adjoining Grays Hills Station. Pest: Rabbits

Treatment method: Poisoning, Shooting

Application method: Pesticide, Mechanical Proposed Future Work: Actual Start Date: 11/05/2014 Follow up night shooting will be required. Further wilding Actual End Date: 21/05/2015 tree control will likely be required in the 2015/16 season. Site area: 3446.2ha

Page 64 Legend Ground94046_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Tekapo River • A variety of weeds were controlled in the Tekapo River this Site: Control Gate to 7km below season. Pattersons Ponds • Gun and hose treatment was carried out on gorse, broom, District: Mackenzie lupin and other woody weeds. Region: Canterbury Reference: 94046_2 Pest: Broom, Gorse, Lupin, Willows (all species) Treatment method: Gun and Hose

Application method: Herbicide, Pesticide, Mechanical Proposed Future Work: Actual Start Date: 11/07/2014 Excellent results have been achieved at this site in the Actual End Date: 10/03/2015 2014/15 season. Further ground control will be required Site area: 724ha next season to further reduce weed infestation levels

Page 65 Legend Ground94013_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Tengawai River • Knapsacks were used for the control works concentrating Site: Upper Tengawai - Upstream of on low density, scattered gorse and broom. Trap Stream District: Mackenzie Region: Canterbury Reference: 94013_2 Pest: Broom, Gorse

Treatment method: Knapsack

Application method: Herbicide Proposed Future Work: Actual Start Date: 20/01/2015 Control work of a similar nature will be required next Actual End Date: 20/01/2015 season to maintain control of seedling regrowth, in Site area: 52.9ha particular checking the upper reaches where adjacent runholders have indicated they have carried out control works.

Page 66 Legend Ground94013_3 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.6 1.2 1.8 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Tengawai River • This year ground control was carried out using gun and Site: Mid Tengawai - between Trap hose and knapsack spraying, concentrating on scattered Stream and Manahune infestations. District: Mackenzie • The upper Tengawai River has a very low level of Region: Canterbury infestation, however ongoing control is required to maintain Reference: 94013_3 this status. Pest: Broom, Gorse

Treatment method: Knapsack, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 20/01/2015 Next season it is proposed that ground control is carried out Actual End Date: 23/01/2015 downstream of where control finished this season. Site area: 41.4ha

Page 67 Legend Ground94013_4 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Tengawai River • Gun and hose spraying was applied to a large patch of Site: Lower Tengawai - near Cave broom along the roadside. township District: Mackenzie Region: Canterbury Reference: 94013_4 Pest: Broom

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 25/11/2014 No further work will be necessary until the 2017/18 season. Actual End Date: 19/01/2015 Site area: 5.1ha

Page 68 Legend Ground94094_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.8 1.6 2.4 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: The Triangle Block • One evening of night shooting was carried out at this site. Site: The entire Triangle Block • Infestation levels have increased markedly due to the adjoining landowner grazing this site, improving the habitat District: Mackenzie for rabbits. Region: Canterbury Reference: 94094_1 Pest: Rabbits

Treatment method: Shooting

Application method: Mechanical Proposed Future Work: Actual Start Date: 21/05/2015 Further shooting or possibly poison control will be required Actual End Date: 21/05/2015 at this site next season to reduce infestation levels. Site area: 448.6ha

Page 69 Legend Ground94034_2 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Twizel River • Approximately 95 hours of ground control work was carried Site: Lower Twizel River out at this site this season. • Broom and gorse were controlled starting from the main District: Mackenzie road bridge. Region: Canterbury • Due to the low river levels this year, it was possible to Reference: 94034_2 concentrate significant resources on pushing back the large area of broom on the true left of the river. Pest: Broom, Gorse

Treatment method: Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 02/02/2015 Ongoing ground control works will be required at this site Actual End Date: 05/02/2015 next season to further reduce the large gorse and broom Site area: 59.8ha infestations. With a substantial broom seed bank and reinfestation from upstream, this site will require ongoing control for many years to come.

Page 70 Legend Ground94004_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 2.5 5 7.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waiau River • Aerial control of medium to heavy infestations of broom Site: Upper Waiau (Upstream of were treated, totalling 23 hectares. Edwards River Confluence) • There are high levels of broom infestation in this area as a District: Hurunui result of a period of control inactivity. Region: Canterbury Reference: 94004_1 Pest: Broom

Treatment method: Helicopter

Application method: Herbicide Proposed Future Work: Actual Start Date: 28/01/2015 Control work is scheduled to continue in 2015/16, working Actual End Date: 28/01/2015 in partnership with DOC. Site area: ha

Page 71 Legend Ground94004_5 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 0.4 0.8 1.2 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waiau River • Ground control totalling 37 hours was carried out at this Site: Near Waiau township site. • The old man’s beard plants were controlled using a District: Hurunui combination of cutting and treating methods, and knapsack Region: Canterbury spraying. Reference: 94004_5 • This site had a low to medium infestation of old man’s beard, and is mainly found in small clumps growing over the Pest: Old Man’s Beard blackberry. Treatment method: Knapsack, Cut and paste

Application method: Herbicide Proposed Future Work: Actual Start Date: 04/02/2015 Control work of a similar nature will be required next Actual End Date: 04/02/2015 season to maintain control of seedling regrowth, so that Site area: 34.3ha weeds do not re-establish a strong presence. Care will need to be taken to avoid spraying of river protection plantings.

Page 72 Legend Ground94004_6 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1.5 3 4.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waiau River • A total of 14 hectares of aerial boom and spot spray control Site: SH1 to the sea along with approximately 190 man hours of ground control was carried out at this site. District: Hurunui • Levels of infestation range from small individual vines to Region: Canterbury heavy canopy. Reference: 94004_6 • A number of river protection plantings exist at this site, which need to be avoided. Pest: Old Man’s Beard

Treatment method: Helicopter, Knapsack, Gun and Hose, Cut and paste Application method: Herbicide Proposed Future Work: Actual Start Date: 05/02/2015 Continued investment in ground and aerial control will Actual End Date: 12/03/2015 need to be made at this site in future seasons, in order to Site area: 510ha bring about a lower level maintenance regime.

Page 73 Legend Ground94004_7 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 5.5 11 16.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waiau River • Ground grubbing of Nassella was undertaken this season Site: Manuka Island to the Sea removing approximately 600 plants and further reducing the infestation levels at this large site. District: Hurunui • Approximately 180 man hours of searching the site and Region: Canterbury hand grubbing Nassella was carried out. Reference: 94004_7 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 11/08/2014 Control work of a similar nature will be required next Actual End Date: 29/08/2014 season to further reduce the density of Nassella. Site area: 2675ha

Page 74 Legend Ground94032_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 1 2 3 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waimakariri River • Aerial and ground herbicide control of broom and gorse Site: Between Mt White Bridge and was once again carried out at this site. Bealey Spur • The infestation consisted of small scattered regrowth District: Selwyn broom and gorse in isolated areas adjacent to the railway Region: Canterbury line. Reference: 94032_1 • Approximately 8.5 hectares of aerial boom spraying control work was carried out, along with approximately 45 hours of Pest: Broom, Gorse ground control work using mistblowers. Treatment method: Helicopter, Mistblower

Application method: Herbicide Proposed Future Work: Actual Start Date: 19/03/2015 Continued follow up work will be required for those areas Actual End Date: 27/03/2015 treated this year, including ground work underneath Site area: 625.8ha willows and near spawning streams. Adjoining infestations continue to be a risk to the LINZ control programme, however ECan is working to resolve this.

Page 75 Legend Ground94052_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 3 6 9 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Waipara River • The Waipara River has a large Nassella infestation, with Site: Laidmore Ford to the sea the main infestation found around State Highway 1 and around the flats below the main road bridge to the start of District: Hurunui the gorge. Region: Canterbury • A total of 3045 plants were grubbed at this site this year. Reference: 94052_1 Pest: Nassella Tussock

Treatment method: By hand

Application method: Mechanical Proposed Future Work: Actual Start Date: 07/08/2014 Further control work will be required at this site in the Actual End Date: 11/08/2014 2015/16 season. Future work will complement the control Site area: 394ha programmes on adjoining land and capitalise on the investment previously made at this site.

Page 76 Legend Ground94043_1 Control* Rabbit Control* Boat Control* Diver Control* Aerial Control* Sensitive area Site extent All Sites 0 3.5 7 10.5 km * Shows works carried out in the 2014/15 season DOC

BIOSECURITY WORKS 2014/15 Control Works Specifications Work Detail: Property: Wilberforce River • Ground herbicide control of broom and gorse was carried Site: Upper Wilberforce - Upstream of out at this site. Wilberforce Canal • The infestation consisted of scattered seedling broom and District: Selwyn gorse with the majority of weeds found at the confluence of Region: Canterbury Kakapo and Boulderstone Streams. Reference: 94043_1 • A helicopter was used to ferry ground crew to the top of this site. Pest: Gorse

Treatment method: Mistblower, Gun and Hose

Application method: Herbicide Proposed Future Work: Actual Start Date: 28/01/2015 Further control will be required next season to maintain Actual End Date: 30/04/2015 low infestation levels. This work is carried out in Site area: 4021.4ha conjunction with DOC, ECan and Whitcombe Landcare Group.

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