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  • GOLD COAST PARKLANDS – EARLY WORKS AND TRUNK INFRASTRUCTURE Water Servicing Strategy

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Hyder Consulting Pty Ltd-ABN 76 104 485 289 Page i http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    CONTENTS

    1 Summary ....................................................................................................................................... 1

    2 Proposed Development ................................................................................................................. 2

    3 Existing Water Supply Infrastructure ............................................................................................. 3 3.1 Exisitng Hydraulic Grade Line ........................................................................................................... 3

    4 Proposed Water Supply Network .................................................................................................. 5 4.1 Desired Standards of Service ............................................................................................................ 5

    4.2 Clarifications ...................................................................................................................................... 5

    5 Water Network Analysis Modelling ................................................................................................ 6 5.1 Calculated Demands ......................................................................................................................... 6

    5.2 Water Network Model ........................................................................................................................ 7

    6 Modelling Results .......................................................................................................................... 8

    7 Conclusion ..................................................................................................................................... 9

    FIGURES Figure 2-1 Site Locality Plan ............................................................................................................................... 2

    Figure 3-2 Existing Water Network Infrastructure ............................................................................................... 3

    TABLES Table 3-1 HGLs at the Proposed Connection Points ......................................................................................... 4

    Table 4-1 GCCC Desired Standards of Service ................................................................................................. 5

    Table 5-1 Potable Water Supply Average Day Demand and Peaking Factors .................................................. 6

    Table 5-2 Assessment of Site During 2018 Commonwealth Games ................................................................. 6

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Page ii Hyder Consulting Pty Ltd-ABN 76 104 485 289 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    APPENDICES

    Appendix A

    Appendix B

    Appendix C

    Appendix D

    Appendix E

    Plan of Development

    Engineering Drawings

    ET and Demand Calculation Table

    WaterCAD Network Reports

    Gold Coast Water Correspondence

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Hyder Consulting Pty Ltd-ABN 76 104 485 289 Page 1 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    1 SUMMARY Hyder have been commissioned by Economic Development Queensland (EDQ) to provide a Water Servicing Strategy as part of the early works package for the proposed Commonwealth Games Village located at the Gold Coast Parklands, Southport, Queensland. The proposed development of the site considers the demands due to the 2018 Commonwealth Games Village as well as the ‘legacy’ development, and the extents and sizes of the potable water network that will be required to service the site once it has been fully developed for future use. This report will demonstrate that a potable water supply can be provided to service the development in accordance with Gold Coast City Council requirements.

    The development is located on the corner of Smith Street and Parklands Drive and ultimately is proposed to consist of low rise residential accommodation, retail and commercial precincts and a ‘Health and Knowledge Precinct’ which features areas planned for medical research institutes, biopharmaceutical manufacturing facilities and health and medical commercial type uses. Connections to the existing Council potable water network are proposed at the intersection of Parklands Drive and Innovation Drive and at the western end of Melia Court.

    A water supply network modelling exercise has been performed by Hyder using WaterCAD version 8i software. The process and results of this modelling exercise are presented within this report, and confirms that the proposed development is able to provide an adequate water reticulation network in accordance with the Gold Coast City Council requirements for fire flow, residual pressure and pipe velocity.

    It is proposed to construct a potable water network which consists of 250, 150 and 100mm diameter uPVC mains. It is proposed for a ‘ring main’ of 250mm diameter to run from both connection points and follow the alignment of Main Street and Hospital Boulevard. Pipe diameters of 150mm are proposed in all other areas with the exception of an inter-connecting pipe of 100mm in the residential area of the site. External works to construct 250mm diameter mains are also proposed in Parklands Drive from Main Street to Innovation Drive and from Hospital Boulevard at the northern site boundary to Melia Court in order to connect the proposed development to existing infrastructure.

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Page 2 Hyder Consulting Pty Ltd-ABN 76 104 485 289 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    2 PROPOSED DEVELOPMENT The development is located within Southport on the Gold Coast, on the corner of Smith Street and Parklands Drive. The site is located over the following block of land:

     Lot 460 SP222438 (1 Parklands Drive, Southport)

    A site locality plan is shown below in Figure 2-1. The proposed development consists of low rise residential accommodation, retail and commercial precincts and a ‘Health and Knowledge Precinct’. The site is will be home the Commonwealth Games Village in 2018 before it is utilised in its ‘legacy’ capacity. The exact configuration of the proposed development is subject to detailed design in conjunction with the QLD Government Developer Partner delivery model, however the latest plan of development is included within Appendix A.

    Figure 2-1 Site Locality Plan

    A bulk earthworks model of the site has been completed which shows that the proposed surface elevation of the site will vary from approximately 9m AHD in the central areas of the site surrounding the proposed open space area to 25m AHD at the western boundary of the site at Parklands Drive. The site forms a gully with low lying portions of the development located in the centre of the site, following the alignment of Hospital Boulevard.

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Hyder Consulting Pty Ltd-ABN 76 104 485 289 Page 3 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    3 EXISTING WATER SUPPLY INFRASTRUCTURE There are existing 250mm diameter potable water mains located within the road reserve of Parklands Drive and Melia Court, which are proposed to act as the connection points to the site. External works within Parklands Drive from Innovation Drive to Main Street and from Hospital Boulevard at the site boundary to the Gold Coast University Hospital (GCUH) to Melia Court shall be necessary to connect the site to the existing water network.

    Figure 3-2 below shows the location of the existing potable water network infrastructure surrounding the Parklands site.

    Figure 3-2 Existing Water Network Infrastructure

    3.1 EXISITNG HYDRAULIC GRADE LINE The existing hydraulic grade lines at the proposed connection points were sourced from the Gold Coast City Council H2OMAP Water model. Table 3-1 below shows the hydraulic grade line at each of the two (2) connection points.

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Page 4 Hyder Consulting Pty Ltd-ABN 76 104 485 289 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    Table 3-1 HGLs at the Proposed Connection Points

    Network Location HGL

    Potable Parklands Drive / Innovation Drive 52.7m

    Melia Court 52.5m

  • Gold Coast Parklands - Early Works and Trunk Infrastructure—Water Servicing Strategy Hyder Consulting Pty Ltd-ABN 76 104 485 289 Page 5 http://aus.hybis.info/projects0/gc/awarded/aa005621/f_reports/f0001-aa005621-aar-01 - wna.docx

    4 PROPOSED WATER SUPPLY NETWORK It is proposed to provide the development with potable