INFRASTRUCTURE ASSESSMENT PROPOSED MIXED USE …

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INFRASTRUCTURE ASSESSMENT

PROPOSED MIXED USE DEVELOPMENT

AT 17 HAWKE STREET AND 22 & 26 CURRAMBENE STREET, HUSKISSON ,

LOTS 7, 8 AND 9 DP758530 SEC 3

Client: Bartlett & Associates Pty Ltd

Ref: N27933 August 2019 Rev: 0

SITE


TABLE OF CONTENTS

1. INTRODUCTION ................................................................................................................................................................................................................................. 3 2. THE SITE ............................................................................................................................................................................................................................................ 3 3. LOCAL INFRASTRUCTURE REVIEW ................................................................................................................................................................................................ 3

3.1. SEWERAGE INFRASTRUCTURE ............................................................................................................................................................................................... 3 3.1.1 Physical Infrastructure .......................................................................................................................................................................................................... 3 3.1.2 Development Contributions .................................................................................................................................................................................................. 4

3.2. WATER SUPPLY INFRASTRUCTURE ....................................................................................................................................................................................... 4 3.2.1 Physical Infrastructure .......................................................................................................................................................................................................... 4 3.2.2 Development Contributions .................................................................................................................................................................................................. 4

3.3. DRAINAGE INFRASTRUCTURE ................................................................................................................................................................................................. 4 3.3.1 Physical Infrastructure .......................................................................................................................................................................................................... 4 3.3.2 Development Contributions .................................................................................................................................................................................................. 4

3.4. ELECTRICITY INFRASTRUCTURE ............................................................................................................................................................................................ 4 3.4.1 Physical Infrastructure .......................................................................................................................................................................................................... 4 3.4.2 Development Contributions .................................................................................................................................................................................................. 5

3.5. WASTE DISPOSAL INFRASTRUCTURE .................................................................................................................................................................................... 5 3.5.1 Physical Infrastructure .......................................................................................................................................................................................................... 5

3.6. TELECOMMUNICATIONS INFRASTRUCTURE ......................................................................................................................................................................... 5 3.6.1 Physical Infrastructure .......................................................................................................................................................................................................... 5 3.6.2 Development Contributions .................................................................................................................................................................................................. 5

3.7. GAS INFRASTRUCTURE ............................................................................................................................................................................................................ 5 3.7.1 Gas Reticulation ................................................................................................................................................................................................................... 5

4. CONCLUSION..................................................................................................................................................................................................................................... 5 Appendices

Table of Revisions Rev Date Details

0 1/8/19 For submission

Report Prepared by: Caroline Griffiths

Allen Price and Scarratts


1. INTRODUCTION

Allen Price and Scarratts (APS) has been engaged to assist with preliminary planning by Bartlett and Associates Pty Ltd. The intention is to take all necessary steps to make the proposed mixed use development ready for development approval as soon as possible. The expected yield of the proposal is approximately 16 Market Apartments, 13 Serviced apartments, 54 double ensuite Hotel rooms with 700m2 ground level facilities, 143m3 specialty restaurant (in the relocated church) and 24 x 4 bed with 12 bathrooms and 84m2 and associated parking. The existing gravesites and green space in the south west corner of the site is to remain. The site has been identified by Shoalhaven City Council as being zoned SP2 under SLEP2014. The primary purpose of this Infrastructure Assessment is to investigate and report on the provision of services for the development. The report considers:

Sewer Water, Drainage Electricity Waste disposal Telecommunications Gas

2. THE SITE

The site is known as Lots 7, 8 and 9 DP758530 Sec 3, 17 Hawke Street and 22 and 26 Currambene Street, Huskisson and is located immediately adjacent and to the south of Huskisson Local Business centre. The site is bounded by residential development to the South and west, Public Park to the east (White Sands Park) and local business centre to the north. There are existing formed public roads and/or access on all four sides of the site. The site is approximately 0.8 ha in area and is approximately 76m wide (north south) by 106m deep (east west) The site contains an existing church with associated residence, outbuildings and graves. The land is partly cleared and predominantly absent of understory due to the managed nature of the site with scattered large trees particularly in the western portions of the site.

Lot Details: Lots 7, 8 & 9 DP 758530 sec 3 Zoning (LZN): SP2: Special

Figure 1: Site Plan

3. LOCAL INFRASTRUCTURE REVIEW

The following infrastructure has been reviewed as outlined below: Sewer Reticulation – Shoalhaven Water Water Supply – Shoalhaven Water Drainage –Shoalhaven City Council Electricity Reticulation – Endeavour Energy Waste Collection and Disposal – Shoalhaven City Council Telecommunications – NBN/Telstra Gas – Private supply 3.1. SEWERAGE INFRASTRUCTURE

3.1.1 PHYSICAL INFRASTRUCTURE

The site is currently serviced via a single junction into the existing gravity sewerage reticulation located at approximately lot 7 and 8 common boundary on the north side of the lot.


Sewerage service for the proposed development will be compliant with AS3500 and connection onto the main split between the existing junction and the existing manhole 2A/9 via a new manhole junction and/or sewer main extension (to be determined at construction certificate stage in consultation with Shoalhaven water) to be constructed during the works phase of the development. Any buildings within the development that cannot be serviced via AS3500 compliant gravity lines will be serviced under a low-pressure system. Shoalhaven Water have confirmed the existing gravity sewer reticulation system downstream of the proposed development has adequate capacity to accommodate the proposed development. See Appendix A, an excerpt from an email received from Shoalhaven Water verifying the adequacy of the existing infrastructure to cater for the proposed development. 3.1.2 DEVELOPMENT CONTRIBUTIONS

The development contributions payable will be in accordance with the DSP’s when adopted and as published by Shoalhaven Water each year. Contributions are generally paid to Shoalhaven Water prior to the issue of a Construction Certificate. 3.2. WATER SUPPLY INFRASTRUCTURE


The site is currently serviced with water reticulation infrastructure from the existing DN100 AC water main in Hawke Street. There are additional mains located in Bowen Street (DN150 AC water main) and Currambene Street (DN100 AC water main) Water service to the development will be the responsibility of developer (including fire service). It is expected that the developer will provide appropriate calculations confirming the metering and firefighting requirements suitable to service the development, including actual and nominal meter sizing as applicable at construction certificate stage. This may include booster assembly, if required, to ensure adequacy of service to use existing water infrastructure. Shoalhaven Water have confirmed there is sufficient capacity and flows in the surrounding water reticulation Mains and as such no additional water reticulation mains infrastructure works are proposed. . See appendix A, an excerpt from an email received from Shoalhaven Water verifying the adequacy of the existing infrastructure to cater for the proposed development. 3.2.2 DEVELOPMENT CONTRIBUTIONS

The development contributions payable will be in accordance with the DSP’s when adopted and as published by Shoalhaven Water each year. Contributions are generally paid to Shoalhaven Water prior to the issue of a Construction Certificate. 3.3. DRAINAGE INFRASTRUCTURE


The site has a crown running approximately from approximately a third of the way along northern boundary of lot 7 from Hawke Street to the south east corner of the site. Approximately a quarter of lot 7 falls naturally to Hawke Street. Hawke Street has upright kerb and gutter along the frontage of the site but no other formal street drainage in the form of pits and pipes. The remainder of the site falls to Currambene Street and Bowen Street where there is an existing series of open drains in Currambene Street and Bowen Street directing all stormwater flows for the site and the fronting public roads to an existing headwall and into the existing pit and pipe system. Due to the absence of formal pit and pipe drainage in Hawke Street it is proposed that all piped flows be directed to the existing drainage system in Currambene Street and Hawke Street. All overland flows from the landscaped and undeveloped portions of the site are proposed to remain as sheets flows in the direction of the existing land fall. On site detention is planned to be utilised to limit the post development peak flows to match the pre-developed peak flows from the site. This will be detailed at construction certificate stage and is likely to take the form of tanks with limited outlet pipe sizes. 3.3.2 DEVELOPMENT CONTRIBUTIONS

The development contributions payable will be in accordance with the DSP’s as published by Shoalhaven City Council each year. Contributions are generally paid to Shoalhaven City Council prior to the issue of a Construction Certificate. 3.4. ELECTRICITY INFRASTRUCTURE


The site is currently serviced from the overhead electrical infrastructure in Hawke Street, owned and operated by Endeavour Energy (EE). There is additional supply (mixed overhead and underground) of electrical infrastructure in Currambene and Bowen Streets owned and operated by Endeavour Energy (EE). High voltage (11kV) distribution works for connection and reticulation of the development are contestable works arranged by the developer via an Accredited Service Provider. This is anticipated to take the form of a new pad mount substation, exact requirements to be confirmed with an actual connection of load application made to Endeavour Energy following the issue of the development approval and be completed prior to the occupation of the proposed buildings. This is the normal process for provision of electrical infrastructure to developments of this nature. Low voltage electrical supply to the development, along with the supporting high voltage network upgrades, will be the responsibility of the developer. APS has not prepared draft electrical reticulation layouts for the site at this time as these will not be a constraint to development.


See appendix B for a letter received from Endeavour Energy verifying the adequacy of the existing infrastructure to cater for the proposed development and the likely requirements upon submission of an application for load, subject to the final load requirements. In conclusion, the electrical infrastructure that is proposed to be installed by developer, with approval of Endeavour Energy, will adequately service the development. 3.4.2 DEVELOPMENT CONTRIBUTIONS

Electrical supply connection to the existing infrastructure is the developer’s responsibility to service the development. Similarly any upgrades of the existing infrastructure for the sole purpose of serving the proposed development is also the developers responsibility. The final breakdown on funding arrangements will be determined once detailed electrical designs and connection of load are carried out and works certified by Endeavour Energy including payment of any associated network fees. 3.5. WASTE DISPOSAL INFRASTRUCTURE


Shoalhaven City Council currently operates waste collection services throughout the LGA through waste disposal contractors. Council also self-operates waste disposal facilities throughout the LGA, including within the Huskisson area in which the site is located. As the development is situated with direct access to public roads and is in an urban/commercial area which complies with the standard kerbside collection requirements, as such kerbside collection services is expected to be available to the site. 3.6. TELECOMMUNICATIONS INFRASTRUCTURE


The site is currently serviced with telecommunications services to the existing dwellings through NBN. Telecommunications infrastructure will be provided by the developer to suit NBN Co’s requirements. DBYD records indicate that an NBN service is available. All installation will be at the developer’s expense with design and installation, if required, to be approved by the relevant authority. Telecommunications is a non-essential service, so the provision of these services does not affect the timing of the development 3.6.2 DEVELOPMENT CONTRIBUTIONS

Fees will be payable to NBN or provider as applicable for the provision of the telecommunication service and in some cases a fee for “backhaul” is also required where significant lead-in infrastructure is required. 3.7. GAS INFRASTRUCTURE

3.7.1 GAS RETICULATION

Gas reticulation is not available on the site. Gas is proposed to be provided to all buildings from an on-site bulk LPG gas tank to be installed to the supplier’s requirements, relevant Australian standards and the Building Code of Australia. Gas is a non-essential service, and as such the provision of these services does not affect the timing of the development. 4. CONCLUSION

The provision of all essential services (water, sewer, electricity) are on readily available to the site and will not be a constraint to the timing or delivery of development. Sewer will predominantly be private gravity draining to existing gravity reticulation subject to calculations during the construction certificate phase supporting that the site will drain in its entirety via gravity. Alternative construction will be to partially service the areas of the site not able to drain via gravity with a Council owned low pressure Pump system. Water reticulation is available. The developer is to verify the connections to the existing mains will be adequate to serve the proposed development. Endeavour Energy is able to supply the expected electrical demand through its existing network. The developer is to make application for connection during the construction. Waste services will not be a constraint to development proceeding. Telecommunications will not be a constraint to development as Government compliant telecommunications providers will supply the necessary services to the development. Gas services will not be a constraint to development as they are non-essential service and are proposed to be delivered by private bulk tank. In conclusion, all existing infrastructure is available to support the proposed development.


Appendix A – Email response from Shoalhaven Water on water and sewer reticulation capacity Excerpt from email from Andrew Solari dated 22.07.2019 16:08 Caroline The existing water and sewer infrastructure would be able to cope with the additional loading from the proposed development. In more detail there is no issues with water, as the site is surrounded with 100mm and 150mm mains offering sufficient capacity and flows. For the sewer, yes a new connection for the eastern part of the site into manhole 2A/9 would be possible. The western part of the site may be adequately serviced with a gravity sewer main extension from manhole 5A/9 to avoid pressure sewer. This gravity main extension may also have the ability to serve the whole site depending on final floor levels and levels of the manhole 2A/9. Please note that Lot 9 Sec 3 DP758530 does not seem to be part of the plans and has in fact been marked as a carpark under the SLEP2014. Regards

Andrew Solari Development Officer – Projects/Development Shoalhaven Water - Shoalhaven City Council

02 4429 3235 Bridge Rd (PO Box 42) Nowra NSW 2541 [email protected] www.shoalwater.nsw.gov.au


Appendix B – Technical review by Endeavour Energy

16 July 2019 Endeavour Energy Ref: ENL3442 Customer Ref: ALLEN PRICE & ASSOCIATES Po Box 73 NOWRA NSW 2541 Attention: Ian Gould Dear Ian ENL3442 – TECHNICAL REVIEW RESPONSE FOR NEW DEVELOPMENT AT 22 Currambene Street, HUSKISSON NSW 2540 Thank you for your application for technical review for the development at the above address. Endeavour Energy has completed a preliminary desk top assessment of the above address and have gathered the following advice:

1) As per the Maximum Demand submitted, 1 x 1000kVA padmount substation may be sufficient. 2) The padmount sub is not expected to be on a spur connection but rather in a ring main. 3) The padmount sub shall be designed as per endeavour energy standards MDI0028. 4) Easement requirements for installation of the padmount subs must comply with MDI0044. 5) Adjacent 11kV feeder HKD2 seems to have the capacity to cater for this load but requires HV

Planning department’s confirmation (this will be done when a formal application of load is submitted).

6) Since this entire build is considered to be one development, it must be ensured that the two addresses/Lots are amalgamated since as per NSW Service Installation Rules, one lot is allowed only one supply. If the lots are not amalgamated, then each lot may require separate supplies.

Please note that this is only a preliminary advice and no capacity on the network is kept reserved until a formal application for connection of load with a confirmed detailed MD breakdown is submitted. Yours sincerely,

Ayman Ayman Shahalam Contestable Works Project Manager Network Connections T : 02 9853 7803 M: 0439 351 215 490 Hoxton Park Rd, Hoxton Park http://www.endeavourenergy.com.au

http://www.endeavourenergy.com.au/

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