Approved Landscape Plan by Mercury

Landscape Plan Turitea Wind Farm TWF-VES-PM-PLN-0013_08-LP

Turitea Wind Farm Landscape Plan T90-VAWT-PM-PL-0015

Document Preparation and Control

Signature

Michelle Flawn – Environmental Advisor (Downer NZ) Document Approval

Signature

Marty Crail – Project Manager (Downer NZ) Duncan Wallbank – Project Manager (Vestas)

Project Document Version

Date

13/09/2019

Document Library Number: DI-PM-TP019

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Document Version History Version No.

Date

Document Status

Brief Description of Change(s) from Previous Version

12/06/2019

Draft

Issued for Client review

18/06/2019

Draft

Issued for review with amendments from version 01

08/07/2019

Draft

Issued for Client review

23/07/2019

Draft

Issued for review with amendments from version 03

25/07/2019

Draft

Issued for Client review

26/07/2019

Issued

Issued for Client approval

02/09/2019

Issued

Issued for Client approval

13/09/2019

Issued

Issued for Client approval

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Vestas Project Contact Numbers Name

Position

Duncan Wallbank

Project Manager

027 885 5407

duwla@vestas.com

Assistant Project

027 885 5408

alsin@vestas.com

027 885 5402

mopst@Vestas.com

027 885 5401

sajoa@vestas.com

Alan Simpson

Phone

Manager Moran Stark

Construction Manager

Stuart Oakey

QSE Professional

Downer Contact Numbers Name

Position

Phone

Marty Craill

Project Manager

027 406 7886

Marty.Craill@downer.co.nz

Marc Gouvernel

Project Engineer

021 831 678 â&#x20AC;Ż

Marc.Gouvernel@downer.co.nz

Steve Christensen

HSE Professional

027 291 1539

Steve.Christensen@downer.co.nz

Michelle Flawn

Environmental Professional

021 583 347

Michelle.Flawn@downer.co.nz

Valentino Cabadonga

Quality Professional

021 814 756

Valentino.Cabadonga@downer.co.nz

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TABLE OF CONTENTS 1

PURPOSE ..................................................................................................................................................5

DOCUMENT SCOPE .................................................................................................................................6 2.1

Project Requirements ......................................................................................................................... 7

PROJECT DESCRIPTION .........................................................................................................................8

STOCKPILES AND SPOIL DISPOSAL ......................................................................................................9 4.1

Decommissioning Erosion and Sediment Control Measures ........................................................... 11

5 LANDSCAPE & REVEGETATION TREATMENT OF SPOIL SITES & OTHER CUT AND FILL EARTHWORKS ................................................................................................................................................12

5.1

Application of topsoil ......................................................................................................................... 12

5.2

Contouring of earth worked areas .................................................................................................... 12

5.3

Revegetation planting ....................................................................................................................... 13

5.4

Grassing / hydroseeding ................................................................................................................... 14

5.5

Rehabilitation of indigenous species ................................................................................................ 14

5.6

Monitoring and ongoing maintenance .............................................................................................. 14

COLOURS, MATERIALS AND LANDSCAPING OF PERMANENT BUILDINGS & ASSOCIATED AREAS 16 6.1

Switchyard ........................................................................................................................................ 16

6.2

Switchroom Building ......................................................................................................................... 16

6.3

Operations and Maintenance Building.............................................................................................. 16

6.4

Garden preparation and mulching .................................................................................................... 16

6.5

Vegetation maintenance ................................................................................................................... 17

ANNEX A: SITE LAYOUT ................................................................................................................................18 ANNEX B: SWITCHYARD SPOIL DISPOSAL AREA ......................................................................................19 ANNEX C: SWITCHYARD LAYOUT ................................................................................................................20 ANNEX D: SWITCHROOM BUILDING ............................................................................................................21 ANNEX E: O&M BUILDING..............................................................................................................................22

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1 PURPOSE Vestas are constructing the Turitea Wind Farm Project (the Project), with Downer New Zealand Limited carrying out all associated civil works and bulk earthworks for the Project. The Consent Holder is Mercury NZ Limited (Mercury). The project is situated on privately owned farmland and reserve area adjoining the existing South Range Road (SRR) alignment that runs along a ridgeline on the Tararua Range south-east of Palmerston North. The overall site layout is shown in Annex A. As required by the Contract Documents, Resource Consents and Vestas / Downer Environmental Management Policies, a number of Environmental Management Plans are required. These documents are incorporated into the overarching Construction Environmental Management Plan (CEMP) which also includes Site Environmental Management Plans (SEMPs). This Landscape Plan is subordinate to, and should be read in conjunction with, the CEMP & SEMPs. The principal purpose of this Landscape Plan is to demonstrate how Downer and Vestas will manage the potential visual impacts associated with the permanent wind-farm buildings, and cut and fill earthworks to ensure compliance with the requirements of the Resource Consent Conditions. This Landscape Plan highlights the minimum standards that must be complied with, the nature of the earthworks and revegetation associated with the project, as well as best practicable options for management of any potential risks. It is intended as a guide for those undertaking the works.

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2 DOCUMENT SCOPE This Landscape Plan has been prepared to fulfil the requirements of the Resource Consent Conditions, specifically Schedule 3: Conditions 88 and 89 which state:

SCHEDULE 3: Conditions relevant to Palmerston North City Council and Tararua District Council Consents 88. At least 40 working days prior to the commencement of any construction works, the Consent Holder must submit to Palmerston North City Councilâ&#x20AC;&#x2122;s Environmental Compliance Manager detailed landscape plans for all cut and fill earthworks and permanent buildings. These plans must: 88.1. Identify the disposal sites for fill, which must be in general accordance with the positions shown on the material identified in condition 25 of Schedule 2; 88.2. Provide for the integration of cut and fill earthworks with the surrounding landform where practicable; 88.3. Detail revegetation plantings; and 88.4. Detail proposed colours, materials and landscaping of the substation buildings, maintenance building and associated areas. 89. The Consent Holder must ensure that all cut and fill earthworks, disposal of fill and landscaping is undertaken in accordance with the landscape plan submitted to Council.

With regards the requirements of Schedule 2: Condition 25, these are also outlined below for clarity:

SCHEDULE 2: Conditions relevant to Manawatu-Wanganui Regional Council Consents Spoil Disposal Sites 25. All spoil disposal sites shall be located to ensure that: 25.1 The uphill boundary is located as close to the ridgeline as possible to reduce upstream catchment size; 25.2 Suitable locations for clean-water cut-off drains can be provided; 25.3 The maximum possible fill volume to surface area ratio is achieved; 25.4 Any indigenous vegetation clearance is minimised; 25.5 They are a minimum of 25m from a permanent watercourse; 25.6 A sediment pond can be located to treat all run-off from the site; and 25.7 There is all weather vehicle (truck and 4x4 utility vehicle) access to sediment ponds for inspection and maintenance purposes

The extent of the works is shown on the site layout drawings attached as Annex A. This plan applies to all aspects of construction and site management for the project.

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2.1

Project Requirements

This plan outlines the project requirements and the scope for associated landscaping works required by Schedule 3, Condition 88 of the Resource Consents. The table below sets out these specific requirements and where within this plan (or in other related plans) they are addressed;

Consent Condition (Schedule 3)

Requirement

Where addressed

88.1

Identify the disposal sites for fill, which must be in general accordance with the positions shown on the material identified in Condition 25 of Schedule 2

Section 4 of this Plan

88.2

Provide for the integration of cut and fill earthworks with the surrounding landform where practicable

Section 5 of this Plan

88.3

Detail revegetation plantings

Full details have been provided to Horizons Regional Council as part of the Rehabilitation and Revegetation Plan required pursuant to Schedule 2, Conditions 33 â&#x20AC;&#x201C; 37 of the resource consents. For the purposes of this Landscape Plan a summary of the treatments proposed for areas affected by the scope of these project works is included in Section 5.

88.4

Detail proposed colours, materials and landscaping of the substation buildings, maintenance building and associated areas

Section 6 of this Plan

The target audiences for this plan are Project Managers, Construction Managers, Site Managers, Supervisors, Site Administrators, and any other relevant stakeholders. Commitment and continuous improvement to Environmental culture by management is critical to its success and continuation. As part of continuous improvement, changes to this Landscape Plan may be appropriate during the course of the project. Reasons for making changes to the Landscape Plan will be documented. A copy of the original Landscape Plan document and subsequent versions will be kept for the Project records and marked as obsolete. Each new / updated version of the Landscape Plan will be issued with a version number and date to eliminate obsolete documentation being used. Any relevant revisions to the Landscape Plan will be submitted to Mercury and the relevant authorities (PNCC & TDC) for review and approval at least 10 working days before becoming operational.

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3 PROJECT DESCRIPTION Downer are required to carry out all civil works and bulk earthworks to support and enable the installation of 33 Wind Turbine Generators (WTGs) by Vestas at the Turitea Wind Farm Project. The scope of these works also includes the construction of access roads, laying the foundations for each wind turbine generator, drainage and electrical work. In addition to this, Downer will also be responsible for the construction of the switchyard and associated buildings. Vestas will be responsible for the construction, installation and commissioning of the 33 WTGs at the site. This includes craneage of the turbine components and electrical works at the WTGs themselves. A general overview of the scope of work associated with the Turitea Wind Farm Project is listed (but not limited to) below; •

Establishment and dis-establishment of temporary site facilities, plant, storage areas and accommodation

•

Pubilc road (off-site) improvements necessary to undertake the works

•

Establishment of two new site access points from the public road and internal site access roads including the upgrade of the exsiting South Ridge Road alignment which is a public road

•

33 WTG inclusive of all structural, working and electrical components, accesses, safety systems and lighting.

•

33 WTG structural foundations

•

Crane hardstands and componentry laydown areas at each WTG site

•

Transportation of major WTG components from Port to WTG locations/hardstands (Others)

•

Aviation lighting

•

Windfarm switchyard and all associated infrastructure and equipment

•

Windfarm switchroom building and all associated infrastructure and equipment

•

Operational and Maintenance facilties inclusive of carparking, hazardous substance containment and security

•

Windfarm collection system inclusive of 33kV cabling (trenched) and switchgear

•

Windfarm earthing system (trenched) tying the WTG foundation earthmats and switchyard earthgrid to achieve overall earthing compliance

•

Windfarm communications network

•

Windfarm fibre optic network (trenched) connecting all WTGs to a central SCADA

•

Installation of equipment for SCADA monitoring and interface with the Employers SCADA system

•

Installation and commissioning of 3 temporary meteorological stations

•

Installation and commissioning of 3 permanent meteorological stations

•

Site reinstatment as necessary in alignment with existing landowner agreements

•

Site reinstatement as per Wildlands Rehabilitation and Revegetation Plan

•

Permanent site fencing and lighting

•

Employer training

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4 STOCKPILES AND SPOIL DISPOSAL Due to the extent of earthworks required for this project, and the nature of the terrain, a number of spoil disposal sites are required within the project area. The use of these disposal sites will be staged, with only the closest disposal site being utilised for each area of the project. Each disposal site will utilise a sediment retention pond, decanting earth bunds and super silt fences as erosion and sediment controls. The specific layout and location of these controls will be identified in the associated Site Environmental Management Plan (SEMP). Once specified works in a project area have been completed, the disposal sites and their associated erosion and sediment controls will be decommissioned, and all disturbed areas will be re-established in accordance with the Wildlands Rehabilitation and Revegetation Plan (staged rehabilitation may be implemented where practicable). Further details on this can be found in subsequent sections of this Landscape Plan. Each spoil disposal site shall be constructed in accordance with the details set out in the CEMP, the relevant SEMP and relevant sub-conditions of Schedule 2, Condition 26, which states:

26.

All spoil disposal sites shall be designed, constructed and managed in accordance with the following: 26.1 The toe bund shall be structural and constructed of weathered rock; 26.2 The amount of surface area within the spoil site that is exposed at any one time shall be minimised, and limited to a maximum of 3ha per sediment pond; 26.3 Exposed areas shall be stabilised to the greatest extent practicable at the end of each day, and temporarily covered if possible prior to any significant storm event; 3

26.4 A 3% sediment pond (or ponds) (being 3m volume for every 100m of catchment) shall be constructed to collect and treat run-off from each site; 26.5 All sediment ponds shall be constructed to provide for retrofitting of flocculation if needed; 26.6 Flocculation shall be provided for each spoil site sediment pond where:

The soils to be placed at the site do not settle to at least 80% removal in 30 minutes and at least 95% removal in 24 hours; and

Laboratory testing shows that flocculation can result in at least 80% removal in 30 minutes and at least 95% removal in 24 hours;

26.7 Compliance with condition 26.6 is to be established by sampling and testing of representative samples of the soils to be placed, both prior to preparation of the SEMP, and during placement in the spoil area; 26.8 A clean water diversion shall be constructed around each site that is capable of diverting the 1% AEP storm event around the site without erosion; 26.9 Each spoil site shall be stabilised and grassed over or re-vegetated, as soon as practicable after it has been fully utilised, in order to prevent scour and avoid sediment being washed into adjacent watercourses. Stabilisation may be staged, and stabilised areas diverted to a clean water diversion, to maintain a suitably small working catchment area; and 26.10 For any spoil disposal sites within the Kahuterawa catchment, stormwater runoff discharged from the sediment pond or external pond batters shall, in addition to any other treatment measures, pass through at least 10m of rank grass buffer before reaching an ephemeral watercourse. Document Library Number: DI-PM-TP019

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The map below shows six indicative soil disturbance/spoil disposal locations, with Area 5 being a cut to fill location for the switchyard and Area 6 being the siteâ&#x20AC;&#x2122;s temporary construction office compound. Details on the exact location and extent of each spoil site will be confirmed following further topographic surveys of these areas, however it is intended that only four spoil disposal sites will be utilised during the project. These details will be presented within the erosion and sediment control plans that form part of the SEMP for each construction area catchment.

Figure 1. Indicative soil disturbance/spoil disposal locations to be surveyed

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In general, however, all spoil sites have been located to ensure compliance with Schedule 2, Condition 25 of the Consents, and will be designed to ensure that: • • • • • • •

4.1

The uphill boundary is located as close to the ridgeline as possible to reduce upstream catchment size; Suitable locations for clean-water cut-off drains can be provided; The maximum possible fill volume to surface area ratio is achieved; Any indigenous vegetation clearance is minimised; They are a minimum of 25m from a permanent watercourse; A sediment pond can be located to treat all run-off from the site; and There is all weather vehicle (truck and 4x4 utility vehicle) access to sediment ponds for inspection and maintenance purposes.

Decommissioning Erosion and Sediment Control Measures

All sediment retention ponds, decanting earth bunds, silt fences and super silt fences are to remain until all surfaces within the contributing catchments are stabilised by grass (strike > 80%), aggregate or other appropriate stabilisation measure. Once the above stabilisation criteria have been met, the decommissioning of controls will meet the following standards: •

The decommissioning of sediment retention ponds or decanting earth bunds will be undertaken to achieve the appropriate geotechnical standard. This standard will define what material is to be used for backfill and what compaction standards are to be met.

•

Prior to backfilling of any devices the silt fence or super silt fences that were utilised during the installation devices will be reinstated if required (particularly over the spillways), note this requirement will be subject to the duration of the backfilling.

•

Any accumulated sediment is to be removed as part of this decommissioning and will be disposed of in one of the site spoil disposal areas.

•

The exposed areas as a result of sediment retention pond or decanting earth bund decommissioning will be rapidly stabilised in accordance with the final landscaping for the area. Where this final landscaping requires grassing, additional stabilisation in the form of hay mulch may be appropriate.

•

Any recyclable materials as the result of silt fence or super silt fence removal, waratahs, wire, tensioners, waratah caps etc. will be retained and reused as practical.

•

The geotextile from the silt fences or super silt fences is not (typically) suitable for reuse so will be removed from site as waste.

•

As with the silt fence material, geotextile used for site stabilisation will be recycled if practical, where this is not practical it will be removed from site as waste.

•

Throughout the duration of the project the ability to salvage and recycle silt fence and geotextile will continue to be investigated. Off-site recycling opportunities will also be investigated.

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5 LANDSCAPE & REVEGETATION TREATMENT OF SPOIL SITES & OTHER CUT AND FILL EARTHWORKS 5.1

Application of topsoil

As required by the Wildlands Rehabilitation and Revegetation Plan, soil from each vegetation or habitat type should be kept separate to enable redeployment in a similar vegetation or habitat type. Topsoil will need to be reapplied prior to revegetation activities to achieve a depth of at least 0.5 metre or 1.0 metre where the substrate is rock or has been severely compacted. The lightest possible vehicle should be used when spreading topsoil to reduce soil compaction issues. Any pest plants in the planting sites and on the soil stock piles will need to be controlled prior to planting to reduce competition with planted species.

5.2

Contouring of earth worked areas

As an initial design criterion, the extent of the earthworks has been minimised. This extent has taken into account the required alignments, both vertical and horizontal, and the geotechnical conditions of the site dictating the maximum and minimum batter slopes. In regard to the batter slopes that are adjacent to South Range Road, these are typically as steep as the geotechnical conditions allow. Due to the location, next to a public road, these completed batters are not intended to be grazed. Final landscaping will take into account the steepness of these slopes, and typically this revegetation will duplicate the adjacent ground cover, generally grass. The areas around the WTG platforms and associated access tracks are not intended to be isolated from stock. Where the WTG and associated access track is in an existing area of pasture, the final contours will be as flat as practical (without significantly increasing earthwork areas or volumes) to allow ongoing grazing. The transition from the final earthwork areas to the existing ground will be softened and rounded to create a ‘natural’ transition complimenting existing contours. The final vegetation in these areas will be a duplication of the adjacent pasture. Where the WTG and or associated access track is in an area that is not currently grazed, the steeper batters as defined by geotechnical constraints will be used. Final vegetation in these areas will be a duplication of adjacent vegetation. The extent of the spoil disposal areas is dictated by the volume of surplus material. The extent of the spoil disposal areas is also influenced by Schedule 2, Condition 25.3 “All spoil disposal sites shall be located to ensure that: The maximum possible fill volume to surface area ratio is achieved.” The location of the spoil disposal sites (with the exclusion of the potential switchyard fill area) are in areas of pasture and will be returned as grazable land. In order to ensure that these areas will be able to be productively grazed the final contours will be no steeper than the existing contours, typically as a result of filling gullies the contours will be flatter. The contours of the completed fill areas will be as smooth as possible, the transition from the completed fill areas to the existing ground will be softened and rounded to create a ‘natural’ transition complimenting existing contours. The final vegetation in these areas will be a duplication of the adjacent pasture.

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5.3

Revegetation planting

According to the Wildlands Rehabilitation and Revegetation Plan, outside of pasture grassland areas, the habitats which will be affected by these project works are as follows: • • •

Pine plantation Felled pine plantation Himalayan honeysuckle/indigenous shrubs scrub

The Wildlands Rehabilitation and Revegetation Plan, also defines different Management Units (MU) where these different habitats can be found within the project site. Works to construct the 33 WTG’s, switchyard and access roads are confined to Management Units 1 and 2. Rehabilitation and revegetation activities for these Management Units are outlined below:

Description

Habitat Type

Aim

Methods

Private land within the northern turbine zone

Pasture grassland

To stabilise and retain soil, and to re-establish pasture grassland.

Hydroseed

Pine plantation

Turitea Reserve within the northern turbine zone

Hydroseed

Felled pine plantation

To stabilise soil.

Hydroseed

Secondary broadleaved forest and Himalayan honeysuckle scrub

To stabilise soil and initiate indigenous canopy following vegetation clearance during windfarm construction.

Hydroseeding followed by planting of indigenous species

Pine plantation

To stabilise and retain soil.

Hydroseed

In all circumstances, reference to the Wildlands Rehabilitation and Revegetation Plan is recommended to ensure that the correct plant/vegetation species are selected for revegetation purposes. Revegetation planting should utilise locally-sourced indigenous species matched to the characteristics of the sites being rehabilitated. The plants are to be eco-sourced from within the Turitea Water Catchment Reserve, or, if material from the reserve is not available, then from the wider Manawatu Gorge South Ecological District, or similar altitudes in equivalent LENZ Level 2 environments, within 20 kilometres of the site. Planting will generally be carried out progressively following the completion of the bulk of the construction road works. Terrestrial planting will be undertaken during April-June to ensure the conditions are not too dry. Any wetland planting should take place during October-November to enable the plants to establish when the roots of Document Library Number: DI-PM-TP019

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wetland plants are actively growing and will not rot. Plants should be planted from planter bags (PB3) as these have the greater survival rates. Plant stakes, ties, wind shelters, and tubes should be used where appropriate. The final planting arrangement specific to the project shall be developed in accordance with Mercury and the relevant Council’s Environmental Manager.

5.4

Grassing / hydroseeding

Grassing and/or hydroseeding of areas will be required where an area is to be re-established as pasture grassland, or on identified cut faces, road verges, any drainage swales, fill embankments, and soil mounds as temporary or permanent grass cover. All areas to be grassed will have a minimum topsoil depth of 0.2 metres. Where this cannot be achieved, then an indigenous lichen hydroseeding mix may be required instead. The hydroseeding mix will vary according to the location and the desired outcome. For pasture grassland, the mix will comprise a suitable grazing mix. Only browntop is to be used for hydroseeding within the Turitea Water Catchment Reserve and any areas managed by the Department of Conservation or iwi. Where indigenous scrub or forest is to be re-established, a range of suitable indigenous grasses, fern fragments, mosses, or seeds could be added to the hydroseeding mix, but grass seeds should be limited to only browntop. In areas that are to be rehabilitated back into indigenous scrub or forest, the minimum soil depth will be 0.5 metres and preferably at least one metre.

5.5

Rehabilitation of indigenous species

During construction of the wind-farm switchyard and the use of adjacent areas for spoil disposal, it is anticipated that some Himalayan honeysuckle scrub will be disturbed in Management Unit 2. Following completion of these works, to stabilise the soil and initiate indigenous canopy, these areas will initially be hydroseeded. The natural re-growth of honeysuckle and indigenous scrub will then be monitored throughout the remaining construction period. If it is apparent that natural regrowth is not occurring to a satisfactory degree, then nursery planting of species will be undertaken. Please refer to the drawing included in Annex B for an overview of the switchyard and adjacent spoil disposal sites.

5.6

Monitoring and ongoing maintenance

A maintenance schedule will be implemented following the completion of the construction works. As required by the Wildlands Rehabilitation and Revegetation Plan, the schedule will entail visiting the site at regular three month intervals, for the first two years, to perform the following works during the defects liability period. These works may include, but are not limited to, the following activities: • • • • • • • •

Topping up of mulch layer to ensure that levels remain uniform over the site and do not fall below minimum depths; Weed control by way of herbicide as to ensure that the planting areas area remain weed free; Spraying of an approved herbicide, insecticide or fungicide to ensure that the area remains pest free; Repair of any vandalism or graffiti rectification if required; Replacing any new plants that die within the defects liability period, if required; Repairing any broken stakes or ties, and removal of rubbish if required; Maintaining proper growth of the plants and for keeping the contract area in a neat appearance; Mowing, fertilising, spraying and watering of refurbished grass areas lawns to ensure a minimum 85% take.

After the two-year period has lapsed, the scheduled visits can reduce to at least annually (preferably twice per year) over the next five years. In addition to the above, the Wildlands Rehabilitation and Revegetation Plan also requires photographic monitoring to be conducted to satisfy Condition 36.5, Schedule 2, with reporting information to be provided to Horizons Regional Council:

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Methods to monitor the success of the plantings will include the establishment of photo points on appropriate vantage points and the establishment of permanent monitoring transects. One transect for every two hectares of indigenous revegetation will be established after plantings have been carried out.

These monitoring methods will assess for: • • • • •

Plant survival rates. Percentage canopy cover achieved. Level of browse by pest animals. Proportion of exotic versus indigenous species. Any encroaching weed species.

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6 COLOURS, MATERIALS AND LANDSCAPING OF PERMANENT BUILDINGS & ASSOCIATED AREAS The wind-farm switchyard is located at the southern end of the project between WTG 32 and WTG 28 and comprises two permanent buildings, high-voltage electrical equipment, security fencing, gantries and overhead electrical cabling. The two permanent buildings are a switchroom (primarily containing electrical equipment and cabinets) and an Operations & Maintenance building (primarily containing office facilities and warehouse space for the wind-farm). The location of the switchyard is shown on the overall site layout included in Annex A. Drawings, colours, materials and landscaping of these areas are further described below, with associated drawings also included in Annexes C, D and E.

6.1

Switchyard

Finishes within the switchyard will be in-keeping with similar electrical facilities throughout New Zealand. It is intended there will be gravelled driveway access with ballast area inside the switchyard security fence and signage directing visitors where to park. Driveways and parking areas in front of the permanent buildings will be chip-sealed with appropriate falls to drainage sumps. Electrical equipment within the switchyard will be factory finished in a grey colour with paint suitable for the external environment. Vegetation reinstatement in non-trafficked areas (e.g. between the O&M building and South Range Road) shall be low growing, low maintenance plants such as tussock grasses and meulenbeckia. Jute Eco Roll (or similar) will be utilised within the garden beds for weed suppression, and moisture retention. Please refer to Annex C for indicative drawings

6.2

Switchroom Building

The switchroom building will be constructed using pre-cast concrete wall-panels, with the natural grey concrete finish present externally. It is intended that roof cladding will be a proprietary corrugated steel product with grey finish. The proposed colour of the roof cladding is ColorSteel: Sandstone Grey - Light Reflectance Value (LRV) 27%. Soffits will be formed using fibre reinforced cement boards with a painted finish. Doors to the switchroom will have a powder-coated aluminium finish and will be of a technical specification suitable for the high-voltage electrical equipment contained within the building. Please refer to Annex D for indicative drawings.

6.3

Operations and Maintenance Building.

The O&M building contains warehouse and office space for the wind-farm and will be finished externally with a proprietary steel sheet cladding system. The wall colour is intended to be green with grey cladding on the roof. The proposed colour of the wall cladding is ColorSteel: Mist Green - Light Reflectance Value (LRV) 26%. The proposed colour of the roof cladding is ColorSteel: Sandstone Grey - Light Reflectance Value (LRV) 27%. Please refer to Annex E for indicative drawings.

6.4

Garden preparation

Garden beds will be filled with a minimum of 150mm topsoil mix. Materials will consist of 70% of premium grade topsoil and 30% well decomposed organic compost. Jute Eco Roll (or similar) will be placed and fixed in accordance with manufacturers recommendations prior to planting.

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6.5

Vegetation maintenance

The proposed maintenance regime will entail monthly site visits to be undertaken within the first 6 months to ensure plants have become established, replacing any unsuccessful plants as needed. Visits for the remaining 6 months of the defects period shall then be reduced to bi-monthly. The total maintenance period shall be 24-months from final completion. Maintenance will be managed by the Vestas Operations & Maintenance team, who have a 25-year service agreement for maintenance of the wind-farm.

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ANNEX A: SITE LAYOUT

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REV REVISION DESCRIPTION A FOR REVIEW

WTG 33

DRN A.P.

WTG 28

SUBSTATION

CHK R.H.

AC K1 3

WTG 25

MCY AP DATE R.H. 21.06.19

WTG 22

HI AT AO KA

WTG 17

TR AC

ER E RD

WTG 07 AC

WTG 15

WTG 13

AREA 4

TRACK 4

WTG 08

BATCH PLANT

TRACK 7

WTG 18

CK 6

WTG 14

WTG 06

AREA 1

TURITEA WIND FARM OVERALL SITE LAYOUT PLAN

CK 17

PREPARED BY:

CLIENT:

TURITEA WIND FARM STAGE 1 - OVERALL LAYOUT

SCALE 1:15,000

O&M

WTG 32

CK 1

TRA

WTG 27

WTG 26

TRA

A TR

WTG 20

K 16

WTG 24

WTG 23

WTG 19

TRA

WTG 05

WTG 16

TRAC

WTG 31

WTG 29

WTG 21

WTG 02

TRACK

WTG 30

AREA 5

WTG 01

20 CK TRA

4 CK 2 TRA

WTG 03

WTG 04

TRACK 21 TRACK 20

AREA 3

CK 8

TRACK 31

C RA

CK 1

TRA

WTG 11

WTG 12

AREA 2

CK 3 TRA

WTG 10

TRACK

2 K

WTG 09

NOTES

21.06.19 21.06.19 AS SHOWN

R.H. R.H. A3

Approved Sheet Size

T90-I Cubed-CV-DR-0010

Drawing Number

21.06.19

A.P. Checked

TURBINE NUMBER

PROPERTY BOUNDARY

WATERWAY CENTERLINE

DESIGN CONTOUR LINE (0.2m INTERVAL)

Sheet Number

Drawing Revision

Folder Reference

EXISTING CONTOUR LINE (2.0m INTERVAL)

Drawn

Scale

WTG 1

LEGEND

3D MODEL AND DRAWINGS FOR TURITEA WIND FARM ARE BASED ON THE NZTM 2000 COORDINATE SYSTEM.

Contract Report No. 1950s-xiv

Landscape Plan Turitea Wind Farm TWF-VES-PM-PLN-0013_08-LP

ANNEX B: SWITCHYARD SPOIL DISPOSAL AREA

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ANNEX C: SWITCHYARD LAYOUT

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Vegetation reinstatement shall be low growing, low maintenance plants such as tussock grasses and meulenbeckia. Jute Eco Roll (or similar) will be utilised within the garden beds for weed suppression, and moisture retention.

SWITCHYARD LANDSCAPING PLAN

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ANNEX D: SWITCHROOM BUILDING

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ROOF CLADDING COLOUR COLORSTEEL: SANDSTONE GREY (LRV 27%)

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ANNEX E: O&M BUILDING

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ROOF CLADDING COLOUR COLORSTEEL: SANDSTONE GREY (LRV 27%)

WALL CLADDING COLOUR â&#x20AC;&#x201C; COLORSTEEL: MIST GREEN (LRV 26%)

ROOF CLADDING COLOUR COLORSTEEL: SANDSTONE GREY (LRV 27%)

WALL CLADDING COLOUR â&#x20AC;&#x201C; COLORSTEEL: MIST GREEN (LRV 26%)