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LOWER WONGA SOLAR FARM Development Application for a Material Change of Use – Engineering Services Report || April 2017

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TMM QMS Template Reference: prj-tem-001.v1

Solar Q

Lower Wonga Solar Farm – Stage 1

Development Application – Engineering Services Report

Prepared for:

Scott Armstrong

0417 608 071 | [email protected]

Solar Q

233 Delaneys Creek Road

Delaneys Creek QLD 4514

Prepared by:

Alex Armstrong

0417 778 960 | [email protected]

Bordstrong Developments Pty Ltd

C/O: L9, 300 Ann Street

Brisbane QLD 4000

Document Ref: BI16051-ENG-REP-001

Rev Date Description Sign Off

A 06/02/2017 For Use Orig

Alex Armstrong

Check

Dave Mason

App:

Alex Armstrong


Development Application - Engineering Service Report


Printed 12/04/2017 at 12:08 i BI16051-ENG-REP-001_A

Table of Contents Executive Summary

1 Introduction ......................................................................................................................................................... 1

1.1 Purpose and Scope ...................................................................................................................................... 1

1.2 Site Description ........................................................................................................................................... 1

2 Detailed description of the Solar Farm ................................................................................................................. 2

2.1 General Parameters .................................................................................................................................... 2

2.2 Photovoltaic Solar Panel Sections ............................................................................................................... 4

2.3 Solar Panel Mounting Racks ........................................................................................................................ 4

2.4 Inverter Block Sections ............................................................................................................................... 5

2.5 LWSF Electrical Works - Internal ................................................................................................................. 6

2.6 Substation and Transmission Connection ................................................................................................... 6

2.7 Energy Storage ............................................................................................................................................ 8

2.8 Transmission and Distribution Infrastructure Management ........................................................................ 8

2.8.1 Powerlink ...................................................................................................................................................... 8

2.8.2 Energex ......................................................................................................................................................... 9

2.8.3 Ergon ............................................................................................................................................................. 9

2.9 Easement Management – During construction and Operations .................................................................. 9

3 Proposed Industrials Area .................................................................................................................................. 11

3.1 Operations and Administration Building ................................................................................................... 11

3.2 Maintenance and Storage Building ........................................................................................................... 12

3.3 Vehicle Storage ......................................................................................................................................... 12

3.4 Fuel Storage .............................................................................................................................................. 12

3.5 Site Security .............................................................................................................................................. 12

4 Animal Management ......................................................................................................................................... 12

5 Operating Hours and Workforce – Construction and Operations ....................................................................... 12

6 Operating Hours and Workforce – Construction and Operations ....................................................................... 13

7 Site Decommissioning ....................................................................................................................................... 14

8 Environmental Management – Construction and Operations ............................................................................ 15

9 Safety Management – Construction and Operations .......................................................................................... 15

10 Transport and Traffic ..................................................................................................................................... 15




Printed 12/04/2017 at 12:08 ii BI16051-ENG-REP-001_A

Appendix A Attachment 1

Lower Wonga Solar Farm Connection Point and Regional Renewable Benefits

Appendix B Attachment 2

Indicative Panel Spacing

Appendix C Attachment 3

Pre-Design Site Assessment Parameters

Figure 1 Proposed Land Development Area

Figure 2 PV Overlay

Figure 3 Racking and Post Installation Method utilised by UGL Limited

Figure 4 Solar PV Panels over grassed and undulating land

Figure 5 An 830 to 3,500 kVA Inverter and Transformer

Figure 6 Substation Location Options

Figure 7 Typical 132kV Transformer Bay Configuration

Figure 8 Typical structures on the Lower Wonga site

Figure 9 Existing transmission lines on the LWSF site

Figure 10 Alternative Locations for the Industrial Area

Figure 11 Indicative Range of Ground Maintenance and Cleaning Options

Table 1 Land Descriptions and Areas

Table 2 Easements located on the LWSF site




Printed on 12/04/2017 at 12:08 Page 1 of 15 BI16051-ENG-REP-001_A

1 Introduction

1.1 Purpose and Scope

The Engineering Services Report has been prepared in support of a Material Change of Use (MCU) Application

for the proposed Lower Wonga Solar Farm (LWSF) located at Lower Wonga approximately 20km west of

Gympie in South-east Queensland. The report has been prepared by Bordstrong Developments Pty Ltd (BSD) -

the owner, developer and applicant for the proposed solar farm.

BSD proposes to construct and operate the LWSF with a nominal capacity of 350 megawatts of alternating

current (MWac) which will be connected directly to the National Electricity Grid at the Powerlink Woolooga

Substation. The Solar Farm will be constructed on land contiguous with the Woolooga Substation and will feed

into the National Electricity Grid through either a 275kV or a 132kV connection. The LWSF will contain an

Ancillary Equipment and Maintenance Support facility which will service the photovoltaic panels and supports

and will include a 33kV customer connection substation, a maintenance shed and a storage facility.

The LWSF will include internal roads, an access from both the Wide Bay Highway and the Gympie Woolooga

Road as well as a car and bus park.

The purpose of the Engineering Services Report is to identify, address and document engineering issues

associated with the construction and operation of the proposed LWSF and will demonstrate how the proposed

development will meet the engineering objectives and outcomes outlined in the Gympie Regional Council

Planning Scheme 2013 version 1.2.

1.2 Site Description

The proposed LWSF site is located on eight parcels of adjoining land at Lower Wonga. Three of the parcels –

Lot 235 on LX2129, Lot 236 and Lot 237 on LX496 – have frontage on the Wide Bay Highway, two of the parcels

– Lot 243 and Lot 244 on LX496 - have frontage on Phillips Road whilst three smaller parcels - Lot 1, Lot 2 and

Lot 3 on RP183439 - have frontage on the Gympie Woolooga Road . The total area of the site is approximately

572 hectares as shown on Figure 1.

The site is well drained with two waterways Black Creek and Spring Creek flowing towards the east. Although

the site is drained by the creeks, the creeks do not have defined beds or banks on the proposed site. A number

of small farm dams have been constructed on the creeks for stock watering.

The relief is described as undulating land, the highest point on the north-west corner has an elevation of

approximately 100mRL whilst the lowest point in the south-east has an elevation of approximately 70mRL.

The maximum slope is about 10% and most of the land has a slope of less than 5%. A detailed aerial survey of

the site has been undertaken.

The surrounding land use is a mix of cattle breeding and fattening and industrial use with power transmission

easements over the proposed site and the adjoining Powerlink Woolooga Substation dominating the

landscape.

The land was cleared of native vegetation possibly one hundred years ago. The current vegetation supports

cattle grazing and is primarily comprised of introduced pasture species such as Rhodes Grass and Couch Grass.

There is a small number of old Eucalypt trees remaining on the site providing shade for cattle and a source of

fence posts.

There are no buildings on Lot 235, Lot 236 or Lot 237 on the northern side of the project area. The remaining

five parcels each have a residence and small farm buildings.

The Wide Bay Highway and the Gympie Woolooga Road are State-controlled roads with a sealed two lane

surface whilst Phillips Road is a Gympie Regional Council road and has a single lane sealed surface.





2 Detailed description of the Solar Farm

2.1 General Parameters

BSD seeking Development Approval to construct and operate a utility scale photovoltaic (PV) power

generation plant as described above. Figure 1 and Table 1 indicate the location and land parcels incorporated

in the development.

Figure 1: Proposed Land Development Area

Table 1: Land Descriptions and Areas

Lot/Plan Land - Hectare

235LX2129 85.6

236LX496 97.2

237LX496 97.1

244LX496 97.3

243LX496 97.0

1RP183439 20.0

2RP183439 20.0

3RP183439 57.8

TOTAL 572





In addition to the eight parcels of land comprising 572ha currently under contract for the proposed LWSF, land

owned by Powerlink surrounding the Woolooga Substation may be incorporated into various aspects of the

LWSF subject to final approval by Powerlink.

The total land area of about 572ha will have up to 240ha of PV panel coverage. The site will include buildings,

access roadways, parking and laydown areas. Vegetative screening will be established along the Wide Bay

Highway frontage. The total operational land coverage will be up to 250ha. The balance of the land will be the

greenscape between panel racks, transmission easement areas, drainage lines and open space.

The initial development area and preliminary design overlay shown in Figure 2 will be optimised during the

final design phase to ensure efficiency and standards are achieved prior to tendering. The expected final

design of the LWSF will have the nominal capacity of 350MW and approximately two million photovoltaic (PV)

panels. The panel clusters will be connected to about 140 inverters with a capacity of 2.5MW. The inverters

are concrete pad mounted and connected to the LWSF substation by local 33kV transmission lines mounted

overhead or buried underground. The network connection capacity is expected to be in the order of

350MW(ac). The network connection voltage will be either a 33kV transformer ended feeder or a

132kV/275kV landing beam connection and is subject to the Powerlink connection delivery scope.

Figure 2: Site Layout (draft and prior to final design)

The LWSF utilises land contiguous with the Woolooga Substation and will establish a Renewable Energy Zone

in the Gympie region. The proposed LWSF land given its close proximity to a major substation carries a number

of high voltage transmission and distribution power lines and the aligning easements. The transmission lines

are high voltage systems of both 275kV and 132kV and supply electrical energy to the Kilkivan, Gympie and

Sunshine Coast Regions and connection into the North Brisbane region. These regions have the highest total

electricity demand in Queensland and the average demand is forecast to be approximately 22,475,000 MWh

for the financial year 2017/18. The LWSF at full capacity is expected to produce approximately 735,840MWh/

year or 3.3% of regional demand. Additional detail is available on Attachment 1.





The LWSF will utilise the easements for underground works and internal site roads and tracks. The easements

will be kept clear ensuring that the LWSF meets the access requirements of both Energex and Powerlink. The

LWSF development is a natural fit for the land already the subject of transmission line easements, electrical

infrastructure and the Woolooga Substation.

The works on site in both the construction and operations phases will be conducted in compliance with the

relevant codes, standards and legislation.

The project will incorporate the following structures and requirements:

• Photovoltaic solar panels

• Solar panel framing and support racks

• Inverter transformers

• Internal maintenance roads and tracks

• Underground and overhead high voltage conductors

• High voltage substation

• Operations and administration building

• Maintenance and storage building

• Vehicle car park

• Road access

2.2 Photovoltaic Solar Panel Sections

The LWSF will maximise the utilisation of the land adjoining the Woolooga Substation, the land not included in

the transmission powerline easements and the disused land within the Woolooga Substation subject to

Powerlink approval. The design will allow for panel frame spacing between sections from around 2m to 4m

and will be dependent on topography, shadowing, and maintenance allowances. The solar panel land coverage

will be up to 240 ha and the number of panels utilised will vary around efficiency and manufacturers panel

dimensions. As an indicative example the site could carry about two million 345 watt panels. Some design

considerations are provided in Attachment 2 and preliminary design parameters are provided in Attachment 3.

2.3 Solar Panel Mounting Racks

The solar industry is continuing to evolve and innovate to meet high levels of engineering standards and

striving to reduce the significant installation costs. Figure 3 shows solar panels mounted on off-ground racks

which is indicative of the design methods to be utilised at the LWSF. During detailed design an assessment of

fixed mounting as in Figure 3, single axis and double axis mounting will be assessed for economic benefits.

Another area of innovation and optimisation is the post installation techniques, the construction is likely to use

a range of post installation methods such as pile driven, screwed or concreted. The final installation method

will be subject to final engineering supported with detailed geotechnical studies. The Geotechnical Report is

included in the DA submission as Appendix A to the Town Planning Report.

The construction of the racks is a significant component of the capital costs and installation efficiencies are

continuing to evolve to deliver improvements in engineering and costs. As a result of continued innovation,

the mounting racks will be prefabricated off-site and transported to site for assembly. The LWSF will utilise the

best available installation methods that meet engineering requirements and deliver installation efficiencies.

Figure 3 shows a steel post and pile driven installation method and the preparation area for an inverter pad

and connection. Figure 4 is indicative of a panel cleaning method and typical panel layouts.





Figure 3: Racking and post installation method utilised by UGL Limited

Figure 4: Solar PV panels over grassed and undulating land

2.4 Inverter Block Sections

PV panels produce energy at a Direct Current (dc) voltage and require the conversion to Alternating Current

(ac) to allow connection to the transmission grid. The panel blocks will be connected to the inverter for





conversion to ac, and these inverters could vary in size and are continuing to grow in capability as solar farm

scales increase. The latest designs utilise the 2.5 to 3.5 Mega Volt Amperes (MVA) inverter either in a single

arrangement or double (5.0MVA) back-to-back arrangement. The number of inverters required for the LWSF

will be up to 150 inverters based on a single arrangement design. A 2.5MVA inverter will collect the energy

from around 9,500 panels and a 5MVA inverter will double that number of panels.

The inverters will be located around the site connected to PV sections and mounted on ground level precast

concrete pads. The output of the inverters is 33kV. The dimensions of the Ingecon Sun Power Station 3.5MVA

plant in Figure 5 are 13.5m by 5m by 2.9m (0.3m above the ground).

Figure 5: An 830 to 3,500 kVA Inverter and Transformer

2.5 LWSF Electrical Works - Internal

The internal high voltage network is expected to be a 33kV circuit and will be above ground or underground or

a combination of both subject to the final design, energy transfer efficiency and capital cost. There will be

approximately 16km of high voltage network on the site.

Consultation is continuing with Ergon Energy, Energex and Powerlink to plan the relocation and management

of the distribution network currently crossing the site. The aim of the consultation is to improve the efficiency

of solar generation. Both the overhead and underground network will be designed to comply with the

engineering and regulatory standards to accommodate the establishment of the LWSF whilst meeting the

needs of Powerlink, Ergon Energy and Energex.

2.6 Substation and Transmission Connection

The current design is based on a 33kV to 132kV or 275kV transfer requirement for connection to the Powerlink

Woolooga Substation. The final connection voltage of 33kV, 132kV, or 275kV will be finalised during the LWSF

final design and the formal Connection Application process with Powerlink. Engineering discussions in

response to the formal Network Connection Enquiry are developing the option for the LWSF to connect at

33kV, 132kV or 275kV. The discussions will determine the location of the substation either on LWSF land or on

the Woolooga Substation land if the substation is owned by Powerlink.

The benefit to the LWSF of Powerlink building, owning, operating and maintaining the substation on Powerlink

land is that this location will allow for an increased PV development or increasing the battery storage

footprint.





Figure 6 indicates the alternative sites for the location of the substation either on Powerlink land or on the

LWSF land. The final substation location will be based on both a technical and commercial assessment at the

time of signing the Generation Connection and Access Agreement (GCAA). Figure 7 also provides alternative

locations for possible connection at the Woolooga Substation, technical optimisation discussions are

progressing with Powerlink.

Figure 6: Substation location options

The Figure 7 below is the typical configuration of a 132kV transformer, Circuit Breaker and Isolation bay.

Figure 7: Typical 132kV Transformer Bay configuration





Powerlink have indicated that the structural heights of high voltage landing beams will be in the order of 15m

and typically below the 44m heights of transmission lattice towers that populate the site. The site currently

accommodates 6 x 132kV double circuit steel lattice towers for the Gympie feeder and 11 x 275kV single

circuit steel lattice for both the Palmwoods and Brisbane feeders as shown in Figure 8.

Figure 8: Typical structures on the Lower Wonga site

2.7 Energy Storage

Although not included in the LWSF Stage 1 Development Application for a Material Change of Use, battery

storage is planned for the future development of the Renewable Energy Hub at Lower Wonga.

The electrical energy market is continuing to evolve and as renewable energy generation increases, energy

supply and energy storage will become integral components of the energy market. Energy storage at this point

is not economic, but prices are falling at an accelerating rate. Battery storage will provide both energy and

ancillary services for the electricity market and provide significant support to the Gympie and South Eastern

Queensland regions.

The future battery installation will be located adjacent to the Woolooga substation and any noise produced

will be within the envelope of the existing Static Variable Compensator (SVC) at the substation. An assessment

will be conducted during the design phase conducting further assessment of energy storage. This would lead

to an allocation of land in the future development footprint followed by a Development Application seeking

approval for a Material Change of Use for Energy Storage.

2.8 Transmission and Distribution Infrastructure Management

The existing transmission lines across the proposed LWSF site are shown in Figure 9 and the transmission line

easements are identified with areas and provided in Table 2.

2.8.1 Powerlink

Powerlink will be the connecting party as the incumbent Transmission Network Service Provider (TNSP) and

owner of the Woolooga Substation. The LWSF has completed the Connection Enquiry stage and will ensure





compliance with Powerlink policies on issues such as building near easements, maintenance of clear ways,

efficient use of easements for servicing tracks and other activities as agreed between the parties. Clear

communications will be maintained at all times with Powerlink.

2.8.2 Energex

As for Powerlink, Energex has been involved prior to design and development to incorporate local distribution

issues into the pre-design and development phases. This will continue during construction and ongoing

operations. Clear communications will be maintained regarding building near easements, maintenance of clear

ways, efficient use of easements for such requirements as servicing tracks and other activities as agreed

between the parties.

2.8.3 Ergon

Engagement with Ergon’s Town Planning Department has been initiated to reach agreement on the way

forward to relocate transmission lines. The LWSF will work with Ergon to minimise impacts on customers

during the period of these changes. Clear communication regarding building near residual and new

easements, maintenance of clear ways, efficient use of easements for such requirements as servicing tracks

and other activities as agreed between the parties. The blue lines on the following picture are the Ergon high

voltage powerlines.

Figure 9: Existing transmission lines on the LWSF site

2.9 Easement Management – During construction and Operations • Safety - Conductor clearances will be maintained in accordance with:

- Electrical Safety Act 2002 (or latest revision)

- Electrical Safety Regulations 2013 (or latest revision)

- Terms and Conditions as specified on the Registered Easements

- Powerlink Management of Easement documents

• The easement will always be kept clear for DNSP and TNSP to access their respective networks.

• The LWSF in consultation and agreement with Powerlink, Energex and Ergon:





- will be built up to the easements boundaries

- The easements may be used as internal maintenance tracks

- Internal networks and services may need to cross the easements to link the solar farm

- The easement areas will be maintained to ensure fire, weed and vermin risks are managed.

Table 2: Easements located on the LWSF site

Lot/PR Area - ha Easements No. Area - ha Easements No. Area - ha Easements No. Area - ha Net of Easements - ha

BRP186088 7.2 ARP186087 2.4

CRP186089 4.4 JSP218491 2.4

CLX2224 0.4 KSP218491 3.0

DLX2224 1.6

LSP218491 3.0

AAP21751 3.0

ARP180948 6.9

BRP180948 7.3

ARP125970 2.5

BRP138693 2.4

CRP183439

DRP183439

BRP189162 1.8 ERP183439

ARP189162 0.3

Total (ha) 571.9 41.8 14.0 516.1

3RP183439 57.8

243LX496

244LX496 97.3

97.0

1RP183439 20.0

2RP183439 20.0

Powerlink

BRP138692 7.2

235LX2129 85.6

236LX496 97.2

237LX496 97.1

Energex Ergon

69.2

92.2

83.9

83.1

92.1

20.0

20.0

55.7





3 Proposed Industrials Area

As indicated above the LWSF is currently in the preliminary design phase. If Development Approval is obtained,

the preliminary design will be reviewed and a detailed design will be prepared for tendering and construction

purposes. The preliminary design shows two alternative locations for the industrial area. The final location of

the industrial area will depend on the layout of PV sections, the final location of the LWSF substation and

various maintenance distances to the outlying PV sections as well as other factors. The alternate locations are

shown on Figure 10.

Figure 10: Alternative Locations for the Industrial Area

3.1 Operations and Administration Building

The Operations and Administration building will be a single storey construction clad, brick or block

construction with a pitched or skillion roof. The style will align to the Woolooga Substation and other

structures in the area and have a floor area of around 300m2. The building will accommodate onsite

administration and management facilities, technical monitoring of the site and solar energy production and

analysis. Information gathered will be utilised for the purposes of determining operations and maintenance

activities. It is expected that there will be four to six personal requiring office accommodation, and include

showers and toilet amenities and first aid areas.

The general layout will meet local building requirements and will include:

• Reception area

• Offices

• Open plan work stations

• Comms/Data room

• Site and Plant monitoring area

• Meeting rooms

• First aid facilities





• Lunch and kitchen facilities

• Shower and Toilet facilities (Male and Female)

• Change rooms and lockers

• Visitor (5 bays) and employee parking area (8 bays)

3.2 Maintenance and Storage Building

The LWSF will include an ability to conduct onsite repairs and maintenance activities. This will allow the repair

of solar farm plant and servicing vehicles and machines. The site will carry sufficient spares, maintenance

consumables and tools and maintenance equipment to ensure the solar farm land is maintained and

operations and availability targets are achieved.

The building is expected to be a portal frame steel shed with a combination of closed and open bays with a

heavy duty concrete slab floor allowing for heavy vehicle, forklift and crane use. The build specifications are

expected to be an area of 800m2 with the eaves of sufficient height for efficient use of cranes and forklifts at

6m and 8.5m at the ridgeline.

Site visitors and employees will enter and operate from the Operations and Administration building, however

deliveries may be made directly to the Maintenance and Storage building. To accommodate this activity there

will be up to four parking bays available. The building may also accommodate sensitive electronic and

computer equipment in an air conditioned storage area.

3.3 Vehicle Storage

The site will require the storage of servicing vehicles such industrial mowers, tractor slashers, small to medium

tracks and tippers, crane, forklift, fire tender, and solar panel cleaners. The shed is expected to be open bay

arrangement with an ability to add roller doors if required for security upgrades.

The building is expected to be a portal frame steel shed with a combination of closed and open bays with a

heavy duty concrete slab floor allowing for heavy vehicle, forklift and crane use. The building specifications are

expected to be an area of 800m2 with the eaves of sufficient height for efficient use of cranes and forklifts at

6m and 8.5m at the ridgeline.

3.4 Fuel Storage

The site may carry up to 10,000litres of fuel for use in maintenance vehicles. The fuel will be stored in

accordance regulatory requirements including AS1940.

3.5 Site Security

The site will be enclosed with a chain link style fence with top wire of either single or double barbed wire with

lockable gates. The site may also have additional monitoring systems installed to ensure unapproved access is

recorded.

To meet access obligations to the transmission and network easements gates will be installed either near to or

aligned with the easements.

4 Animal Management

Grazing animals, likely to be sheep or other low impact animal may be used to assist in the management of

grass. Yards will be installed to support animal management which will be undertaken in accordance with best

agricultural practice. An example of sheep being utilised for grazing within a solar farm can be seen at the UQ

Gatton Solar Farm.

5 Operating Hours and Workforce – Construction and Operations





The construction period is estimated to be approximately 18 months in duration and a peak construction

workforce of about 450 personnel will be employed during construction. It is intended that the construction

contractor will have the flexibility to undertake activities on a 24 hour 7 day basis during the construction

period. This level of flexibility will provide improved working conditions for construction employees by

allowing rest breaks during a shift involving the laborious and monotonous fixing of about two million PV

panels to supports. Safety considerations will be the highest priority and previous international experience is

that employees must have rest breaks during shifts to mitigate safety risks. Excessive heat stress during day

shifts must also be managed effectively by scheduling exposed work to night shifts under lights.

The obvious result of restrictions on working hours is that the construction period will be prolonged

unnecessarily beyond the planned 18 month duration.

In addition to safety considerations, there is relevant legislation both at the State level and the Local level

which control working activities such as noise levels and sleep disturbance.

During operations, the scheduling of maintenance activities and emergency repairs will also require the ability

to conduct 24 hour 7 day week work cycles particularly where work activities may involve PV panels normally

operating during daylight hours. As for the construction program, the management of safety issues may

involve avoiding excessive heat and regular work breaks. During normal operations, scheduling maintenance

activities to maximise energy production will require fully flexible working hours.

6 Operating Hours and Workforce – Construction and Operations

The typical maintenance activities are expected to be in the following areas some of which are shown in Figure

11:

• Groundcover management

• Water run-off management

• Weed, pest animals and vermin control

• Fire management

• Solar panel cleaning

• Solar panel replacement

• General fencing and security maintenance

• Inverter maintenance

• Substation maintenance





Figure 11: Indicative range of ground maintenance and cleaning options

Regular grassed area maintenance will be conducted to ensure management of weeds and fire management

with the reduction of fuel loads. Slashing, mowing, and selective herbicides may be used in combination to

manage weeds as well as the use of grazing animals.

Plant maintenance activities likely to impact energy production will be conducted where possible to minimise

production losses. This is likely to be for long service periods during lower irradiation winter months and for

short durations outages conducted after sunset and overnights with a return to service the following morning.

7 Site Decommissioning

The LWSF Stage 1 will have a planned life of 30 years and during this period midlife refits are expected for

electronic devices that are no longer supported by manufacturer spare parts or to change over old technology

for new. At the 25 year period an assessment of future life will be conducted to assess degradation and

remaining life and the possibility of a total site refit. Given the strategic location close to a significant customer

demand and the Woolooga substation, a refit delivering an additional 30 years is highly probable.

At the end of site operations, a decommissioning program will be implemented. All above ground structures,

footings, and capping of underground services will be conducted. The site will be restored to the standard

required for general rural use, in all probability, very similar to the current land use.





8 Environmental Management – Construction and Operations

Bordstrong Developments Pty Ltd (BSD) understands and is committed to the importance of maintaining a

high standard of environmental care and management in conducting all activities at the LWSF not the least

because high voltage infrastructure is involved.

From design through to supply, installation, construction and operations, BSD is committed to minimising

pollution and contributing towards a sustainable future by overseeing, managing and monitoring the activities

at the LWSF to ensure that an acceptable balance is achieved between environmental, technical, economic

and social objectives.

The combined efforts of BSD, its employees, contractors and subcontractors will ensure the effectiveness of

achieving the goal of environmental sustainability.

As a minimum, BSD will ensure that contractors who are involved in the construction and operation of the

LWSF will maintain an Environmental Management System which complies with AS/NZ ISO 14001 the key

requirements of which are:

• Set objectives and targets that define the reduction of impacts on the environment through

conducting risk assessments and hazard analyses,

• Manage operations in compliance with applicable laws, legislation, regulations, standards and codes

of practice that minimise any adverse impact on the environment,

• Conserve resources, minimising waste and seeking continual improvement of processes to protect

the environment

• Communicate with employees, clients, suppliers, contractors and the community on environmental

issues

• Provide appropriate training for awareness and education for people on environmental issues and

specifically to individuals with environmental responsibilities

• Establish Environmental Management Plans setting out the responsibilities and processes to

minimise impacts

• Ensure all work practices comply with the Environmental Management System and legislative

obligations

• Conduct monitoring and evaluation to ensure the environmental compliance and obligations are

achieved

• Require all employees and subcontractors to operate in an environmentally responsible manner and

adhere to relevant environmental requirements

• Regularly review performance, identify and implement corrective and preventative actions that

contribute to continually improving the environmental performance of operations.

9 Safety Management – Construction and Operations

Bordstrong Developments Pty Ltd will ensure that all contractors will hold accreditation to the Quality

Management System – AS/NZS ISO 9001:2008 and the Safety Management System – AS/NZS ISO 4801:2001.

10 Transport and Traffic

The TMM Group Pty Ltd have been engaged by BSD to report on Transport and Traffic issues relevant to the

construction and operation of the LWSF. The report of the Transport and Traffic Impact Assessment is

presented as Appendix 2 to the Town Planning Report. The recommendations of the Transport and Traffic

Impact Assessment will be adopted and implemented by BSD and the primary contractors on the project.




Printed on 12/04/2017 at 12:08 BI16051-ENG-REP-001_A

Appendix A Attachment 1 Lower Wonga Solar Farm connection point and regional renewable benefits





Lower Wonga Solar Farm & Energy Storage Connection Point

(735,480 MWh/an# or 3.3% of regional demand)

1,268,000 MWh/an*

17,804,000 MWh/an*

3,403,000 MWh/an*

* Powerlink 2016 Planning Report - 2017/18 forecast# Forecast at Maximum Site Capacity, does not include Charge/Discharge Cycling Energy

Total Regional Demand22,475,000 MWh/an*2,566 MW(average)

4,689 MW (peak)





Appendix B Attachment 2 Indicative Panel Spacing





Preliminary Design – Lower Wonga Solar Farm – Stage 1

2 x Portrait Layout 20 deg

Spacing Centre to Centre Between Panels

5.9 m 2.24 m

1.84 1.84 m - Either Side of Centre

8 7 6 5 4 3 2 1 m

High - Summer Energy

20 Deg

3.91 1.34

0.50

3.68

1.84

Nominal Design Detail: 1. Portrait Design x 2 panels 2. Panel size – 1.956m x 0.992m 3. Panel angle 200 & North facing 4. Leading edge height off ground 0.5m 5. Spacing centre to centre – 5.9m





Appendix C Attachment 3 Pre-design Site Assessment Parameters





Jinko Panels - JKM 345M-72

Spacing Rack - Centre to Centre m 8.00 6.48 5.91

Spacing Between Racks - Panel to Panel m 4.32 2.80 2.24

Project Size MW(ac) 270 334 365 Energy pre inversion MW(dc) 367 454 497

Solar Panels (345W) No. 1,064,880 1,315,440 1,440,720

Box No. 40,957 50,594 55,412

40' Containers: No. 1,707 2,108 2,309

Deliveries "B Double" No. 853 1,054 1,154

Blocks No. 108 108 108

Block Coverage Ha 434 434 434

Panel Land coverage (grass under panels) Ha 194 240 263

Racks (Rack = 2xPortrait x 29 PV Panels) No. 18,360 22,680 24,840

Posts per Rack No. 8 8 8

Posts - Racking No. 145,873 180,196 197,357

Racking lengths (2 x Portrait Design) km 528 652 715

Steel/Aluminium Weight t 21,754 26,873 29,432

Post and Racking Deliveries No. 483 597 654

Roads/tracks km 26 26 26

ha 7.9 7.9 7.9

All Weather Roads (#% of total tracks) km 5.3 5.3 5.3

Gravel/Roadbase required m3 4,768 4,768 4,768

Gravel Deliveries (Truck and Dog) No. 220 220 220

Fencing (3m including 3 x Barbed Wire) km 11 11 11

Inverter/Transformers (2.5MVA) No. 108 133 146

Inverters (on concrete pads) ha 0.49 0.61 0.67

Inverter & Pad Deliveries No. 81 100 110

33kV network km 22 27 29

t 104 128 140

Cable Deliveries No. 4 4 5

Substation ha 0.9 0.9 0.9

Substation Deliveries No. 6 6 6

Operations and Administration Building ha 0.03 0.03 0.03

Workshops & Storage ha 0.08 0.08 0.08

Vehicle storage ha 0.08 0.08 0.08

Deliveries - Building Materials No. 20 20 20

Car Park ha 0.9 0.9 0.9

Volume m3 3,600 3,600 3,600

Concrete Deliveries No. 166 166 166

Land Covered (µ 0.0) ha 10.4 10.5 10.6

Panels above grassed areas (>µ 0.0) ha 194 240 263





Land area on title/s ha 572 572 572

Balance of Land not under equipment ha 561 561 561

Total Deliveries No. 1,834 2,168 2,335

Heavy lifts No. 3 4 4

Coverage 2% 2% 2%

Open Space 98% 98% 98%

Capacity Factor % 25% 24% 23%

Production MWh/an 591,596 701,563 736,363

Lower Wonga Solar Farm - gympie.qld.gov.au · Solar Q 233 Delaneys Creek Road ... are provided in...

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