609-621 Burwood Highway, Knoxfield Engineering Assessment Development Victoria

May 2017 Contents

1 Introduction

2 Glossary

3 GHD Disclaimer

4 1 Engineering Assessment

12 Appendix A - Infrastructure Plans

II | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD Introduction

Development Victoria is considering to develop land at 609-621 Burwood Highway, Knoxfield. The site is currently government owned and controlled by the Department of Environment, Land, Water and Planning for the purposes of a horticulture research station. The site is approximately 19 Ha, bounded by Burwood Highway and Scoresby Road, and is located adjacent to Knox City Shopping Centre and Fairhills High School. It is understood that Development Victoria wish to undertake a Engineering due diligence assessment of the site to inform the rezoning application.

GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |1 Glossary

The following abbreviations are contained within this report and explained for further understanding. CICL Cast Iron Cement Lined CONC Concrete PE Polyethylene UPVC Unplasticized Polyvinyl Chloride OPVC Oriented Polyvinyl Chloride HDPE High Density Polyethylene MDPE Medium Density Polyethylene MSCL Mild Steel Cement Lined MSW Mild Steel Welded Dia Diameter kVA Kilo Volt Amps DBYD Dial Before Your Dig

2 | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD GHD Disclaimer

This report: has been prepared by GHD for Development Victoria and may only be used and relied on by Development Victoria for the purpose agreed between GHD and the Development Victoria as set out in the Purpose of Report section of this report. GHD otherwise disclaims responsibility to any person other than Development Victoria arising in connection with this report. GHD also excludes implied warranties and conditions, to the extent legally permissible. The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the scope limitations set out in the report. The opinions, conclusions and any recommendations in this report are based on conditions encountered and information reviewed at the date of preparation of the report. GHD has no responsibility or obligation to update this report to account for events or changes occurring subsequent to the date that the report was prepared. The opinions, conclusions and any recommendations in this report are based on assumptions made by GHD described in this report. GHD disclaims liability arising from any of the assumptions being incorrect.

GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |3

1 Engineering Assessment

4 | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD 1. Methodology 2.1 Responsible Authorities 1.1 Purpose of this Report The development site is bound by Scoresby Road on the east side and Burwood Highway on the south side of the GHD conducted a general servicing location enquiry for all development. VicRoads is the responsible authority for both relevant services via Dial Before You Dig, and has received these roads. existing services plans from all relevant authorities. Upon receipt of these plans, brief discussions were held with each service All proposed internal roads within the site development would be authority to initiate further advice regarding the proposed future the responsibility of the City of Knox and would be designed to development. Digital copies of services plans were requested Council standards and used to create existing services plans shown in Appendix A. 2.2 Proposed Development Formal requests for further servicing advice and additional The site is serviced well with direct access to the existing road development information were issued to all relevant authorities infrastructure. Discussion with both Council and VicRoads has and subsequent discussions were held with a number of the determined that access intersection at Scoresby Road is stakeholder authorities. Phone and email discussions were achievable and would need to be reviewed further upon formal undertaken to confirm and expand on information relevant to this application and further traffic studies. feasibility assessment. It is anticipated that typical road cross sections shall be in the A review and analysis of the available service authority form shown in Figure 1. information was undertaken and broad high level service capacity and road strategy advice was obtained from relevant authorities. Discussions were held with the following service authorities in addition to receiving formal information: • Multinet Gas • Ausnet Services – Electricity • South East Water • City of Knox • VicRoads • NBN 1.2 Service Authorities The following asset owners and service providers were contacted and are relevant for development approvals: • Electricity Distribution – Ausnet Services • Telecommunications – Telstra, Optus and NBN • Gas Reticulation –Multinet Gas • Sewer and Water – South East Water • Internal Road Infrastructure and Stormwater Drainage – City of Knox • External Road Infrastructure - VicRoads Available service capacity, infrastructure strategies and indicative high level costings received from the authorities has been gathered and detailed in the following sections. Generally authorities have advised that further consultation and formal supply applications are required when functional designs are completed to ensure service strategies and detailed supply offers can be ultimately provided. 2. Road Access GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |5 Collector Road - 20 m Road Reserve

Access Street – 15 m Road Reserve

Access Lane – 6 m Road Reserve Figure 1 Development Layout and Typical Road Heirarchy

6 | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD 3. Electricity 3.3 Existing Services and Assets 3.1 Responsible Authorities The existing distribution electricity infrastructure for the development area is shown in Plan 1 in Appendix A. Ownership of power assets in Victoria is split between the transmission network and the distribution network. The majority 3.3.1 Distribution Network of the transmission network in Victoria is owned, maintained and AusNet Services has numerous high voltage and low voltage operated by AusNet Services and in this case the same authority cable assets both underground and overhead surrounding the maintains the distribution assets as well. proposed site. An existing 22,000 volt substation – Burwood HRI 3.2 Terminology Burnett, is located at the Burwood Highway frontage, however this asset is not within the development site and facilitates the The transmission network includes terminal stations and adjoining Department of Environmental and Primary Industry transmission lines, which connect the power stations to the (DEPI) site and external properties to the south of the terminal stations. development. The distribution network connects to the Terminal Stations and AusNet Services has advised that existing high voltage assets extends to the individual properties. exist along Scoresby Road and Burwood Highway. The The distribution network comprises the following components: proposed development can be supplied from these assets without the need for any external high voltage substation/ • Sub-transmission lines that connect terminal stations to conductor upgrades. zone substations 3.4 Proposed Servicing Advice • Zone substations 3.4.1 External Development Infrastructure • Distribution Feeders – either overhead or underground lines that connect zone substations to local substations As previously mentioned, no external works are required to facilitate electrical supply to the development. • Substations – indoor, kiosk or pole mounted • Low Voltage Power lines – either overheard lines or underground cables connecting the substations to the customers The components of typical transmission and distribution networks are broadly described in Figure 2.

Figure 2 Typical Electricity Transmission and Distribution Network

GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |7 3.4.2 Internal Development Infrastructure 4.2.2 Optus As a residential development the electrical distribution must be Plans provided by Optus indicate that there are Optus assets underground supply with kiosk reserves required within the along Scoresby Road and Burwood Highway. The majority of development area. It is expected that all proposed electrical existing conduits are 100 dia in size in varying material and conduit and cable assets will be within road reserves and new Optus has advised existing copper and optic fibre cables are kiosk substation - potentially 2 No 500 KVA kiosk substations present to service the site. would be need to be positioned preferably in the open space There is a minor existing network supplied from Scoresby Road areas. that will need to be decommissioned and removed to facilitate For the commercial/mixed use development a kiosk substation the new development network. or an indoor substation will be required and the size will depend 4.2.3 NBN on final loadings, however it may be in the order of a 500 KVA substation. NBN assets are currently being installed with completion scheduled in 2017. A proposed network of low and high voltage cables will need to be installed within the subdivision with high voltage links between 4.3 Proposed Servicing Advice the various substation sites and surrounding high voltage 4.3.1 External Development Infrastructure network at the development frontages. The surrounding roads consist of adequate telecommunication The existing overhead lines within the subdivision, specifically assets, therefore no external works are required to facilitate along the western boundary will need to be removed and supply to the development. Please refer to Section 4.3.4 for undergrounded as part of the proposed reticulation network. further details. AusNet Services have advised that for residential developments 4.3.2 Internal Development Infrastructure high voltage reimbursements at scheduled rates are available following the construction of the infrastructure within the 4.3.3 NBN subdivision. However this cannot be determined at this point in NBN is wholly government owned, with the role to design, build time as it’s defined by the authority and the calculated rate of and operate the infrastructure. NBN will become the wholesale return to AusNet Services. Relevant low voltage reimbursements provider of fixed line telecommunication through a network of where assets are constructed within road reserves are at a rate fibre optic cables to be rolled out over the next 10 years. of $980 per lot ex GST. However as NBN is yet to complete services in this area, the 4. Telecommunications option of other service providers is available to supply 4.1 Responsible Authorities telecommunication to the development. NBN has advised that at this point in time backhaul charges apply at $41,000 with Telstra and Optus are the authorities responsible for the existing deployment contributions based on lot numbers at $280,000. supply and reticulation of telecommunication services within the Backhaul charges apply to the distance of infrastructure required area of the proposed development site. to connect the development to the NBN access infrastructure. The NBN Co network has been rolled out in this area with These are subject to change depending on the final supply completion scheduled in 2017. loading of the development and the extent of the NBN at the time of application. 4.2 Existing Services and Assets 4.3.4 Telstra Existing telecommunications infrastructure is shown in Plan 2 in Appendix A. If Telstra is chosen by the developer as the telecommunication provider, then Telstra has sufficient existing assets surrounding 4.2.1 Telstra the site which consists of both copper and optic fibre that can Plans provided by Telstra indicate that there are Telstra assets supply the site. Telstra advised that further information and plans along Scoresby Road and Burwood Highway. The majority of would be required to be submitted and registered as a new existing conduits are 100 dia in size in varying material and project for the authority to complete a thorough assessment. Telstra has advised existing copper and optic fibre cables are This will determine the extent of new works and alteration of present to service the site. existing assets which are allocated to different departments within Telstra. There is a minor existing network supplied from Scoresby Road that will need to be decommissioned and removed to facilitate Telstra outlined that 3 distinct departments would need to be the new development network.

8 | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD involved in assessing and designing supply to the proposed APA Group while Multinet Gas own, operate and maintain the development: distribution network for east and south eastern Melbourne. • The Network Integrity Team Multinet Gas was consulted as part of this assessment and was able to assist in providing relevant information for both • The Optic Fibre Team transmission and distribution networks. • The Smart Communities team. 5.2 Existing Services and Assets The process in determining capacity/level of supply available will Existing transmission and distribution gas infrastructure is shown require a field operative going on site to evaluate existing in Plan 3 in Appendix A. conditions, assets to be abolished and what can be retained. Consultation would then be required with the fibre optic team to 5.2.1 Transmission and Distribution Networks get a better understanding of the fibre optic supply to the site The development site is currently surrounded by high pressure and then registering the project with Telstra Smart Communities, gas mains which minimises the need for gas augmentation for who can determine the additional infrastructure. Telstra indicated the development – 150 mm dia along Scoresby Road and 200 that this is approximately a 12 week process. mm dia along Burwood Highway. Multinet Gas has advised that Typically upon formal application to Telstra, the project is as this site is large, connection to high pressure mains may be registered on their system for provision of underground cable achieved from these assets. supply. The developer as part of the subdivision would construct The existing site has provision for a 50 mm high pressure the pit and pipe network in readiness for Telstra to accept the connection point from Scoresby Road with a regulator kiosk with assets and use for their cabling network. As this is an essential the site. These assets will need to be decommissioned and service no contributions are warranted. removed to facilitate the new development network. It is anticipated that any costs incurred for the supply of the 5.3 Proposed Servicing Advice development will be in terms of alterations to existing external assets. At this point in time Telstra will require a formal 5.3.1 External Development Infrastructure application for the development in order to understand the No external works are required to facilitate gas supply to the scope of this works. development. 4.3.5 Optus 5.3.2 Internal Development Infrastructure In the same manner as Telstra, if Optus is chosen by the It is expected the proposed development may be sufficiently developer as the telecommunication provider then Optus has serviced by the existing gas infrastructure surrounding the site. sufficient existing assets surrounding the site that can supply the However Multinet Gas has advised that a formal development site. application and System Planning assessment would need to be The relevant application and further information would need to completed in order to confirm this arrangement and determine if be submitted to Optus for further assessment. It is anticipated there is any degree of pipe augmentation. that any costs incurred for the supply of the development will be The proposed development loadings may be accommodated by in terms of alterations to existing assets. At this point in time the existing assets, however Multinet Gas needs to complete the Optus will require a formal application for the development in relevant modelling to determine how this additional load will order to understand the scope of this works. affect the surrounding gas reticulation network. At this stage in the feasibility, indicative costings based on It is expected that the gas authority will provide a gas reticulation providing pit and pipe networks to NBN standards have been network within the subdivision as an essential service, therefore completed. no contributions are relevant. The developer will only incur costs 5. Gas relating to the trenching and provision for the reticulation which is generally coordinated as joint trenching with the water 5.1 Responsible Authorities reticulation. Ownership of gas assets in Victoria is split between the transmission network and the distribution network. The transmission network in Victoria contains the higher pressure mains which are reticulated into the distribution network. The transmission network is owned, maintained and operated by

GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |9 6. Sewerage 7.2 Existing Services and Assets 6.1 Responsible Authorities Existing water infrastructure is shown in Plan 5 in Appendix A. South East Water is the authority responsible for the provision of Existing potable water reticulation infrastructure is in the vicinity reticulated sewerage within the proposed area. Discussion was of the proposed site; completed with South East Water to understand their existing • Burwood Highway - 150 mm dia CICL and 450 mm dia infrastructure within and around the site and their strategic MSCL servicing plan for the proposed development site. • Scoresby Road - 150 mm dia UPVC on both sides of the 6.2 Existing Services and Assets road Existing sewerage infrastructure is shown in Plan 4 in Appendix The initial information supplied by South East Water does not A. indicate that Class A recycled water network is available to this Sewerage plans provided by South East Water indicate the area. following existing assets in the vicinity of the proposed site; 7.3 Proposed Servicing Advice • Blind Creek - north of the site 675 mm dia CONC 7.3.1 External Development Infrastructure • Eastern boundary 225 mm dia UPVC South East Water have confirmed that the development site is 6.3 Proposed Servicing Advice serviced with external existing infrastructure. Therefore it appears that no proposed external infrastructure is required. 6.3.1 External Development Infrastructure The development will be serviced from two distribution zones as The development site is serviced with external existing shown on the attached ‘Potable Water Plan’: infrastructure along the downstream boundaries. Therefore it appears that no proposed external infrastructure is required. • Boronia Reservoir zone (HGL 185m), south of the 90m contour South East Water have confirmed that the existing 225mm diameter UPVC sewer main and 675mm diameter RC sewer • Knox Reservoir zone (HGL 130m), north of the 90m contour main have sufficient capacity to service the proposed Boronia Reservoir zone development. The existing 150mm diameter potable water main located in Written permission for access and construction will be required Burwood Highway and the 150mm diameter potable water main for connection to the sewer mains from the effected property located on the eastern side of Scoresby Road have sufficient owner prior to commencement of the works. capacity and are to be used to supply the properties south of the 6.3.2 Internal Development Infrastructure 90m contour as shown on the attached ‘Water Plan’. In order to service the proposed site, it appears that the existing Knox Reservoir zone 225 mm dia sewerage main along the eastern boundary of the The existing 150mm diameter potable water main located on the development has available capacity for this development. western side of Scoresby Road has sufficient capacity and is to The expected internal sewerage network will be aligned within be used to supply the properties north of the 90m contour. The allotment easements and road reserves all in accordance with proposed water main will need to be constructed through the South East Water standards. The system will grade towards the Boronia Reservoir zone. No tappings or connections are to be north east corner of the development to discharge into the made on this main below the 90m contour and must be existing sewerage system. constructed on the opposite side of the road to the tappings water main for the Boronia Reservoir zone as shown on the 7. Potable and Recycled Water attached ‘Water Plan’. 7.1 Responsible Authorities The proposed potable water mains located at the interface of the South East Water is the authority responsible for the provision of two zones are to be constructed with a Hydrant-Valve-Hydrant reticulated water within the proposed area. Discussion was arrangement. completed with South East Water to understand their existing infrastructure within and around the site and their strategic servicing plan for the proposed development site.

10 | May 2017 | 609-621 Burwood Highway, Knoxfield - Engineering Assessment |GHD 7.3.2 Internal Development Infrastructure In order to service the proposed site, it appears that both the existing 150 mm dia mains along Burwood Highway and Scoresby Road have available capacity for this development. The proposed internal water network will be aligned within road reserves all in accordance with South East Water standards. The system will be reticulated with connections points at the Scoresby Road and Burwood Highway development intersections. 8. Contributions and Fees Developers are required to make standard regulated development contributions as well as fund the construction of the infrastructure network within developments. The contributions and fees are established to allow authorities provision to fund the capital works within their region. Service authorities and developers must provide services in accordance with Essential Services Commission’s Guidelines as detailed below • Service authorities are responsible for providing shared distribution assets and temporary shared works • Developers are responsible for providing reticulation assets and temporary reticulation works • Developers are responsible for the financing costs associated with bringing forward the provision of shared distribution assets and temporary shared works • Developers are responsible for the cost of connecting their development to the water retailer’s shared infrastructure assets • Developers are responsible for the installation and financing of dedicated assets to service their development It’s expected that this development will fall under Point 4 and 5 where the developer is responsible to fund the works to facilitate supply for the proposed development. However this arrangement can be defined and confirmed upon formal application and negotiation with the relevant service authority.

GHD | 609-621 Burwood Highway, Knoxfield - Engineering Assessment | May 2017 |11 Infrastructure Plans • Plan 1 • Plan 2 • Plan 3 Appendix A • Plan 4 • Plan 5 • Plan 6 • Plan 7

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LEGEND Site Boundary Drain/Channel/Other Stormwater Drainage - Knox Council

Contour 1 m (AHD) Limit of Modelling Stormwater Drainage - Melbourne Water

Contour 5 m (AHD) 100 Year ARI Flood Extent ! Drainge Pit

Stream Land Subject to Inundation

Paper Size A4 Development Victoria Job Number 31-35115 0 25 50 100 150 200 621 Burwood Highway, Knoxfield Revision A Date 11 May 2017 Metres Map Projection: Transverse Mercator Horizontal Datum: GDA 1994 Existing Flooding Grid: GDA 1994 MGA Zone 55 o 100 Year ARI Extent Plan 7 G:\31\35115\GIS\Maps\Working\Infrastructure Maps\3133432_007_100yrFlooding_A4P.mxd 180 Lonsdale Street Melbourne VIC 3000 Australia T 61 3 8687 8000 F 61 3 8687 8111 E [email protected] W www.ghd.com

© 2017. Whilst every care has been taken to prepare this map, GHD (and DATA CUSTODIAN) make no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and cannot accept liability and responsibility of any kind (whether in contract, tort or otherwise) for any expenses, losses, damages and/or costs (including indirect or consequential damage) which are or may be incurred by any party as a result of the map being inaccurate, incomplete or unsuitable in any way and for any reason. Data source: VicMap, DEPI (2015), GHD and DBYD supplied data. Created by:lrsmith GHD Pty Ltd Level 8, 180 Lonsdale Street Melbourne VIC 3000 T (03) 8687 0000 F (03) 8687 8111 E [email protected] © GHD Pty Ltd 2017 This document is and shall remain the property of GHD Pty Ltd. The document may only be used for the purposes for which it was commissioned and in accordance with the Terms of Engagement for the commission. Unauthorised use of this document in any form whatsoever is prohibited. Document Status

Rev Author Reviewer Authorisation No. Name Signature Name Signature Date

1 GHD Sam Rowland *S. Rowland Sam Rowland *S. Rowland 29/05/2017

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