Woolloomooloo Wastewater and Stormwater Separation Project

Decisions Report June 2016

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

Table of contents

1 Introduction ...... 1 1.1 The purpose of the decision report ...... 2 1.2 Planning approval framework ...... 2 1.3 Summary of the project from the REF ...... 3 1.4 Changes to the project ...... 3 2 Consultation ...... 5 2.1 Proposal development and REF preparation ...... 5 2.2 REF public display ...... 5 2.3 Enquiries and submissions ...... 6 2.4 Further consultation ...... 6 3 Submissions ...... 8 3.1 Formal submissions ...... 8 4 Consideration of issues ...... 13 4.1 Scope of work ...... 13 4.2 Noise and vibration ...... 14 4.3 Traffic ...... 15 4.4 Stakeholder consultation ...... 16 4.5 Contaminated soils, acid sulphate soils and asbestos ...... 16 4.6 Soil and water ...... 17 4.7 Non – Aboriginal heritage ...... 18 5 Environmental management ...... 19 6 Conclusion ...... 28 6.1 Justification of the proposal ...... 28 6.2 Determination of the project ...... 28 7 References ...... 31 8 Glossary and abbreviations ...... 32

1 Introduction

The Woolloomooloo catchment is located within the City of Sydney local government area and includes the suburbs of Potts Point, Darlinghurst and Woolloomooloo. The catchment is drained by a series of pits, pipes and overland flow paths into Woolloomooloo Bay. The area currently has a combined system where wastewater and stormwater is collected in the same pipe. This combined system is one of the five original combined systems that were built in Sydney in the 1800’s. The Woolloomooloo section is the only remaining system yet to be separated.

Sydney Water owns the larger combined wastewater/stormwater pipes. The rest of the stormwater assets in the area are owned by the City of Sydney Council. Sydney Water will continue to own the existing combined pipes which will be utilised as stormwater water pipes after the upgrade.

The dry weather flows in the combined system are captured and directed for treatment to the Bondi Ocean Outfall Wastewater System. During wet weather, the combined system capacity is exceeded and stormwater mixed with heavily diluted wastewater flows into Woolloomooloo Bay through overflow points located in this catchment.

The Woolloomooloo Wastewater Stormwater Separation Project (the project) aims to build a separated wastewater and stormwater collection system. The project objectives are to:  construct all works necessary to completely separate the wastewater and stormwater system in the Woolloomooloo area

 improve visual impacts through the removal of wastewater related gross pollutants from the streets and the harbour surrounding Woolloomooloo

 reduce the nuisance odour emanating from the street gully pits in the Woolloomooloo area  construct the new system to meet a discharge frequency target of 20 overflow events in 10 years.

The project has been divided into the following five construction packages:  Stream Street, Woolloomooloo  Brougham Lane, Potts Point and Darlinghurst Road, Darlinghurst

 Forbes Street, Darlinghurst  Riley Street, Woolloomooloo  Womerah Avenue, Darlinghurst. Sydney Water completed the Review of Environmental Factors (REF) for the project in March 2016. The REF concluded that the project is unlikely to have a significant impact on the environment.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 1 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

Sydney Water exhibited the REF from 11 April to 9 May 2016. Sydney Water invited state government, local government, community members and other interested stakeholders to comment on the project and provide formal submissions. The closing date for submissions was 9 May 2016.

We received seven submissions following the public exhibition of the REF. The main issues raised were associated with noise and vibration, traffic management and ongoing stakeholder consultation during the construction period.

This Decision Report responds to the submissions made.

1.1 The purpose of the decision report This Decision Report:  considers the issues raised in the submissions  identifies and assesses any changes to the proposal that have resulted from Sydney Water’s consideration of the submissions

 identifies whether any new mitigation measures, or changes to existing mitigation measures, are required

 recommends whether Sydney Water should proceed with the proposal.

1.2 Planning approval framework The Environmental Planning and Assessment Act 1979 (EP&A Act) provides the statutory context for the project’s environmental assessment. Sydney Water is assessing and determining the project under Part 5 of the EP&A Act, with Sydney Water as the determining authority. The State Environmental Planning Policy (Infrastructure) 2007 allows Sydney Water to do the project without development consent.

The REF assessed the potential environmental impacts associated with the construction and operation of the separated wastewater and stormwater collection system. Sydney Water considered the potential impacts against the matters listed in the clause 228 of the Environmental Planning and Assessment Regulation 2000 (EP&A Regulation). Sydney Waters’ assessment concluded that the project is unlikely to have a significant impact on the environment. Sydney Water has not changed this conclusion after considering the submissions, so an environmental impact statement is not required.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 2 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

1.3 Summary of the project from the REF The project and proposed activities are unchanged from those described in section 5 of the REF. The project involves the construction of approximately 4.2 km of new wastewater pipes adjacent to the existing combined pipe and connection of about 220 properties to the new wastewater pipe. The existing combined pipe will be retained as a stormwater pipe. Approximately 650 m of new stormwater pipes will also be required.

Construction of about 115 new maintenance chambers and internal work within the current combined pipe. No new vent stacks are proposed as part of this proposal. However, Sydney Water will review the requirement of the exiting vent stacks during detailed design stage and decommission the assets which are not required.

The key elements of the project as described in the REF are shown in Figure 1.

1.4 Changes to the project

Sydney Water has not changed the scope of the project since the exhibition of the REF. However, we have provided additional information in the Decision Report, including:  Responding to submissions  Adding several new mitigation measures to address issues raised in submissions (see Table 2)

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 3 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water. 15 HUNTER STREET

Y A 20 W C D AH A 20 IL L E O X R PR ES F SW R D A Y A A H

PLACE T W RO

R L E P TA N PHILLIP STREET ST

ESCEN W PI

S O

C LACE CR

E OL AST ERN

S LINC U Woolloomooloo Bay 5 BU D R A MCDONA BS O R R A Y IL 25 R W E L A L Y A CHALL G IS A T AR C OW P ER W ROC HAR KWAL F ROADWAY

T ROCK STREET BLAN WA N D STREE 30 E T

C S NICHO E LSON S 25 R TRE AD P ET RO RI 20 C S NC E MCELHONE M E G A N WILSO J A U N ST T L 15 REET S B O E Y R N T 10 H O T ROAD J E ANE IR E L S R

REET Stream Street SCULUM ET

G TU

separation area HARM N ORIA ST E BEST ST I R STREE R L EET STR HUGHES T CT ST W REE VI

O UGHAM T T E E U R B I T BRO O S R RWEL C EET L ST ATHEDRAL T R ! R S I T

Y N

A R E S T

E C N P W A E THEDR T

Y HONE S A R E L AL A S

S L

I TR I

R W EET A N

A K E UNNEL N G

R S

A R MCEL F

A E EARL STREET I G

P 25 I E

E G 0 L R L 3 G D H OU D

N U C T O J A E R R V I U EET E E N Y R C U TR T Brougham Lane CROSS CITY T E Y S T I R E separation area C M

L EGAN PLACE

REET A

PARK CROWN S P STREET T S

T ! T STRE E ET

COLLEGE L EL L NN E TU ING STREET K CITY L OSS Y CROSS CIT CR URON G LANE Y TUNNEL DOW T BR BARNETT LANE OUGHA E M T LANE

TRE 40 WI LLI NG S ANE PR AM ANE EMI S L ER LANE TREET ST PETE TR RS STREE E S E G URO ODE LA L T OM T RICH Y Y LAN D E D LE A SEL 45 RI O WIS T SR RO R KIN STANL U GS CROSS R EY S Forbes Street H OAD FRA TREET D G NCIS LAN N A I F O RANCIS ST E L REE R R T separation area PTON PLACE A N A Darlinghurst road ! D CHA CL O PEL S T TREET E K separation area R I K E N CH A AR EET LOTT ANE L E R

LANE EY

T EET R ! R LIVERPOOL STREET R SU LIVER 50 ! POOL MER L LANE L A ES ST P EAST OMSON S

T Womerah Avenue

SYDNEY T

E FORB

R separation area T KI S NGS LANE REET

E L W

A T

Riley Street E D 30 EY ST S NE T L RE E ! H A

T I separation area AR ST N D YSS L STRE

M DIE

IA ET WE AR R

ALBERTA STREET H 20

F O

OL VICTO T BURTON S 35

EY ST U

30 T TREE 20 B I T E FOY LANE E A REET R 25 R R T PELICAN STRE N S H T O I S U L D D N EET P N T L R S A C 50 E E STR T E N T R A D B S E IS A E R A T B O E FORBES R

25 T L S ITTLE OX R 15 U

H 45 T G E IN E L R FORD S R T A S D R E TR T S E E E I O ET T C N MACDONALD ST F E E STR

A TAYLOR SQUARE CAM

N STR 50

EE PBELL A

EL M T

35 LI T

V A © Land and Property Information (a division of the Department of Finance and Services) 2012 STREET E B 35

AMU

AUCHAMP LANE M ET

LEGEND Proposed Stormwater Existing Sewer Sewer Separation Project Sites Proposed Sewer Combined Sewer Contours Stormwater Railway

Job Number 21-25044 Paper Size A3 Sydney Water 025 50 100 150 200 Woolloomooloo Sewer Separation - Revision 1 Integrated Planning Aspects Date 10 Feb 2016 Metres Map Projection: Transverse Mercator Horizontal Datum: GDA 1994 Grid: GDA 1994 MGA Zone 56 o Study area and proposed works Figure 1 N:\AU\Sydney\Projects\21\25044\GIS\Maps\Deliverables\21_25044_Z008_ProposedWorks.mxd Level 15, 133 Castlereagh Street Sydney NSW 2000 Australia T 61 2 9239 7100 F 61 2 9239 7199 E [email protected] W www.ghd.com © 2016. Whilst every care has been taken to prepare this map, GHD and NSW DEPARTMENT OF LANDS, GEOSCIENCE AUSTRALIA, NSW DEPARTMENT OF PRIMARY INDUSTRY, SIXMAP IMAGERY 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: NSW Department of Lands: Cadastre - Jan 2014; Geoscience Australia: 250k Data - Jan 2014; NSW Department of Primary Industry - Jan 2014; SIXmap imagery Jan 2015. Created by: jrichardson

2 Consultation

Sydney Water developed a community and stakeholder engagement plan (CSEP) to ensure that the local community and key stakeholders are given clear, accurate and timely information during the project’s various stages. Sydney Water identified key stakeholders according to their interests or the project’s potential impacts.

As part of the CSEP, Sydney Water consulted with the local community and key stakeholders during the preparation and exhibition of the REF. This Decisions Report documents Sydney Water’s response to the issues raised in this consultation, focusing on submissions made during the public exhibition of the REF.

The following sections describe the consultation done to date and proposed future consultation during the detailed design and construction phases of the project.

2.1 Proposal development and REF preparation Key stakeholders were identified by their potential to be impacted by the proposal. Consultation with stakeholders and community members has been ongoing since October 2014.

Community consultation activities during the development of the proposal included:  presentations and meetings with stakeholders and community groups  distributing a community update letter to potentially affected residents throughout the project area

 setting up a community information line and email address  providing information about the project on Sydney Water’s website  providing information on the Sydney Water Talk to offer a platform for comment and conversation

 One to one meetings with the key stakeholders.

2.2 REF public display The REF was on public display from 11 April to 9 May 2016 on Sydney Water Talk. We invited the community and stakeholders to provide comments or submissions on the project by 9 May 2016.

Before the public exhibition period, Sydney Water consulted with the community and stakeholders to invite comments and submissions by:  Delivering 3000 letters to local residents through a letterbox drop. These informed the community of the REF being on display and advised on how to make a submission.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 5 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 Sending out a letter to relevant government agencies and council advising of the REF display dates and the submission process.  Emailing known local community groups and business groups  Mailing copies of the REF to key stakeholders. Two hard copies and four electronic copies were sent to the following stakeholders: - City of Sydney Council - Environment Protection Authority - National Parks and Wildlife Services (OEH) - Heritage Council (OEH).

Follow up phone calls were made to agencies and some stakeholders with particular concerns that did not make a submission to ensure whether they are planning to submit one so that sufficient time was given to make a submission.

2.3 Enquiries and submissions

Enquiries and submissions received during the community consultation period included:  Two calls to the community information line  Three emails to the project email address  Two letters the project post box address  Three submissions from State and local government agencies and special interest groups. Overall the responses from community and stakeholder groups were positive recognising the need to separate the stormwater and wastewater system due to the pollution of the nearby Woolloomooloo Bay and health impacts of the combined system with respect to wastewater discharges and odour. Concerns were raised over the potential construction impacts of the works, particularly the noise and vibration impacts to nearby residents.

Section 3 and Section 4 address the issues raised in these enquires and submissions. Appendix A includes copies of the submissions received.

2.4 Further consultation Sydney Water is committed to informing and consulting with the community and stakeholders. Sydney Water will continue to consult throughout the project design, construction and operation. This will ensure that the community remain informed and that we understand their issues and concerns.

Sydney Water in conjunction with the delivery contractor will further develop and deliver the CSEP for the detailed design and delivery phases of the project, in line with Sydney Water’s communications strategy and community and stakeholder engagement policy.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 6 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

The delivery contractor, in close consultation with Sydney Water, will keep the community informed throughout construction as well as manage issues and complaints. After commissioning, Sydney Water’s standard policies and procedures for customer and community relations will apply.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 7 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

3 Submissions

This chapter summarises the submissions received, in response to the public display of the REF.

3.1 Formal submissions Sydney Water received seven formal written submissions from local residents, government agencies and stakeholders, raising issues and comments about the project.

Sydney Water identified 26 issues or comments from the submissions. Table 1 outlines those issues and comments, categorised by topic and author. Sydney Water’s responses to these submissions are provided in Section 4. The most common issue relate to noise and vibration during construction.

Copies of the submissions received are included in Appendix 2. Names and addresses of private individuals and community members have been omitted, as required by the Privacy Act 1988.

Table 1 Summary of issues raised in submissions

No. Issue/ Comment Submission/ Location Agency where issue is addressed in this report.

General

1 Generally supports the separation of wastewater from Submission 1 Noted. stormwater in Woolloomooloo. from local resident

2 Recognises that some short term inconvenience will be Submission 1 Noted. necessary in order to achieve this important environmental from local milestone. resident

3 Noted that there has been longstanding community concern Alex Greenwich Noted. about flooding and sewage overflows in this precinct during MP long periods of heavy rain and is pleased that Sydney Water plans to separate the sewerage and stormwater

4 Notes that these stormwater assets will remain the City of Sydney Agreed. 4.1 responsibility of Sydney Water.

Scope of work

5 Specifically request that the designers eliminate the vent Submission 1 4.1 shaft at a specified address. from local resident

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 8 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

6 Requests the proposed alignment of the new wastewater City of Sydney 4.1 network should not compromise the opportunity of future stormwater upgrade works, in particular the Stream Street and the Crown Street low points.

7 Notes that all works are to the designed in accordance with City of Sydney 4.1 the City’s Stormwater Design Code (A4). The minimum conduit size of 375 mm diameter (class 4) is required.

Noise and vibration

8 Requests that strong protections be provided to residents Alex Greenwich 4.2 against noise impacts, with night works not allowed as far as MP possible.

9 Requests that where individual residents will experience Alex Greenwich 4.2 major long term disruption with intrusive noise, there should MP be a program offering respite accommodation.

10 Recommends that during the preparation of the Construction EPA 4.2 Environmental Management Plan, Sydney Water consider implementing the following: - Negotiate earlier start times for future Road Occupancy Licences (ROLs) - Restrict the number of nights per week and/or the number of nights per calendar month that the works are undertaken - Works which will exceed the noise management levels in the Interim Construction Noise Guideline (DECC 2009) should generally not occur on more than two consecutive nights per week in the same area - Schedule works to ensure that the same sensitive receivers are not affected on more than two nights per week by moving the location of night works after two consecutive night works - Negotiate with the affected community to determine if a more mutually beneficial schedule can be agreed on.

11 Request that when planning and executing this work that the Submission 2 4.2 following items be considered: from local resident. - The work be done during the day - That residents be given ongoing updates of work locations so residents can plan activities accordingly

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 9 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

- Properties are fitted with noise treatments. - That the contractors be trained to understand that they are representing government. That they are expected to provide a high level customer service. First and foremost respect for the resident’s needs

12 Are concerned about noise impacting activities within the SCEGGS 4.2 school campus. Darlinghurst

13 Requests that appropriately sized equipment fitted with Submission 2 4.2 silencers be utilised during works and leading noise from local attenuation methods be adopted during works. resident.

Traffic

14 Requested the project include measures to address Alex Greenwich 4.3 alternative parking options for residents’ while work is being MP carried out.

15 Are concerned egress and access from the campus and the SCEGGS 4.3 impact on pedestrian pathways used by students travelling to Darlinghurst and from school particularly at peak times.

Community and stakeholder consultation

16 Requested that early notice be given. Submission 1 4.4 from local resident

17 Requested that all affected residents and local businesses Alex Greenwich 4.4 be informed of project impacts with sufficient time to plan MP alternative arrangements.

18 Requested further consultation during the detailed design City of Sydney 4.4 phase of this project.

19 Requested further discussion around school operational SCEGGS 4.4 issues coordinating with construction activities to reduce Darlinghurst impacts.

Contaminated soils, acid sulphate soils and asbestos

20 Recommends that the Construction Environmental EPA 4.5 Management Plan include a specific requirement for construction activities to:

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 10 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

- Be carried out in the accordance with relevant EPA guidelines made or approved under section 105 of the Contaminated Land Management Act 1997 - Outline strategies for addressing unexpected contaminated material finds - Address management of acid sulphate soils - Address management of asbestos.

21 Recommends that the Construction Environmental EPA 4.5 Management Plan include a specific requirement for a Contaminated Land Management Plan.

Soil and water

22 Recommends that during the preparation of the Construction EPA 4.6 Environmental Management Plan, Sydney Water develop more detailed requirements for the assessment and management of water quality impacts.

23 Recommends that the required assessment include: EPA 4.6 - Identification of the potential and volumes of water (such as stormwater runoff, seepage, and groundwater) that may need to be managed during the construction process - Identification of the need for offsite discharges during construction and any associated treatment requirements - A description of receiving waters, including background water quality - Assessment of potential impacts on receiving waters - Identification of measures and strategies to minimise/manage impacts on receiving waters.

Non – Aboriginal heritage

24 Recommends the works will require a section 60 application Heritage Council 4.7 under the Heritage Act 1977 which should include consideration of whether any potential impact to historical relics in this area may still exist and may be harmed by this activity.

25 Depending on the final location of the proposed pumping unit Heritage Council 4.7 supporting the Domain Carpark, its final design (finish), size and placement should seek to avoid any potential impacts to

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 11 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

the heritage values of the State Heritage Register (SHR) listing, if any.

26 It is noted that the preferred route selection would use Heritage Council Noted. existing infrastructure routes and disturbed areas, mainly along existing road corridors and is most likely to avoid historical archaeological relics. This approach is supported.

27 Heritage Division noted that the Sydney Hydraulic Power Heritage Council 4.7 Company established and maintained a network of high pressure water powered hydraulics in the late 1880s which extended across much of the current Sydney central business district. It connected to a series of power stations, one of which was located in Woolloomooloo. The pipelines cross the city and their locations are not well recorded. However some members of the National Trust Industrial Heritage Committee have been involved in a recording project. It is recommended that Sydney Water contact the National Trust Industrial Heritage Committee to seek information about any known locations of this system and advice on its identification and recording, if the network is found to coincide with the proposed works.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 12 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

4 Consideration of issues

This chapter outlines the issues raised in the REF. Each submission was reviewed and specific concerns have been identified and grouped based upon the chapters and key issues in the REF.

The concerns raised by submissions are presented in boxes and Sydney Water’s response is provided below. The text from each submission has been reproduced exactly as it was provided to Sydney Water. Names and addresses of private individuals and companies are not shown. If a submission raised several issues, only the relevant parts of the submission have been presented for each particular issue. Any clarification notes made by Sydney Water are shown in italics within square brackets.

4.1 Scope of work

5. Specifically request that the designers eliminate the vent shaft at a specified address. 6. Requests the proposed alignment of the new wastewater network should not compromise the opportunity of future stormwater upgrade works, in particular the Stream Street and the Crown Street low points. 7. Notes that all works are to the designed in accordance with the City’s Stormwater Design Code (A4). The minimum conduit size of 375 mm diameter (class 4) is required.

The request to remove the vent will be considered during the detailed design phase of the project. During the detailed design phase the potential localised impacts of the works will also be considered and minimised where possible. Ongoing consultation with this stakeholder will occur during detailed design.

City of Sydney have been identified within Section 2.3 of the REF as a key stakeholder for the project. As the detailed design phase progresses Sydney Water will continue to liaise with the City of Sydney to ensure that newly installed assets will not interfere with currently proposed upgrade works. If the plans are not yet developed for future works, Sydney Water will provide our plan of the proposed routing of the pipes, and will seek comments on our design and pipe routing.

During detailed design phase Sydney Water will ensure that all relevant stormwater and wastewater codes and standards will be adhered to for the new assets, with consideration to the existing services.

As stated within the REF once both systems are operational Sydney Water will have ongoing responsibility for operation. Routine maintenance and inspections will be undertaken periodically as required.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 13 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

4.2 Noise and vibration

8. Requests that strong protections be provided to residents against noise impacts, with night works not allowed as far as possible. 9. Requests that where individual residents will experience major long term disruption with intrusive noise, there should be a program offering respite accommodation. 10. Recommends that during the preparation of the Construction Environmental Management Plan, Sydney Water consider implementing the following:  Negotiate earlier start times for future Road Occupancy Licences (ROLs)  Restrict the number of nights per week and/or the number of nights per calendar month that the works are undertaken  Works which will exceed the noise management levels in the Interim Construction Noise Guideline (DECC 2009) should generally not occur on more than two consecutive nights per week in the same area  Schedule works to ensure that the same sensitive receivers are not affected on more than two nights per week by moving the location of night works after two consecutive night works  Negotiate with the affected community to determine if a more mutually beneficial schedule can be agreed on. 11. Request that when planning and executing this work that the following items be considered:  The work be done during the day  That residents be given ongoing updates of work locations so residents can plan activities accordingly  Properties are fitted with noise treatments.  That the contractors be trained to understand that they are representing government. That they are expected to provide a high level customer service. First and foremost respect for the resident’s needs 12. Are concerned about noise impacting activities within the school campus. 13. Requests that appropriately sized equipment fitted with silencers be utilised during works and leading noise attenuation methods be adopted during works.

Sydney Water is committed to minimising the potential noise impacts during the construction work. When planning construction for the project, Sydney Water and the delivery contractor will consult with appropriate road authorities (RMS, and City of Sydney Council) to provide day time ROLs to ensure night works are minimised where possible.

Prior to the start of construction Sydney Water will consult with residents and sensitive receivers who will be heavily affected for extended periods. Consultation with sensitive receivers will determine appropriate mitigation measures, including if necessary respite periods and/or respite accommodation. Consultation will also occur with sensitive receivers (such as educational institutions, and places of worship) to ensure work is scheduled where possible to avoid disruption at noise sensitive times.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 14 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

Following collaboration with residents and sensitive receivers, the delivery contractor will be required to prepare a Construction Noise and Vibration Management Plan (CNVMP) as part of the CEMP. The CNVMP will describe how noise and vibration impacts will be minimised and managed throughout construction works. Preparation of the CNVMP will consider current best practice for noise attenuation including appropriately sized machinery, shielding and silencers.

The CNVMP would include the following:  Identification of nearby residents and other sensitive land users.  Description of approved hours of work and what work will be done during these times.  Proposed noise mitigation measures to be incorporated and monitored during construction phase.  Description of what work practices will be applied to minimise noise.  Description of the complaints handling process.  Induction material for site personnel noise outlining sensitivities of the area and appropriate work practices to minimise noise. It is anticipated that the CNVMP will be updated throughout construction to review all reasonable and feasible noise mitigation measures as the work progress.

A CSEP will also be prepared for the project which identifies sensitive receivers and provides a protocol to ensure that affected residents are regularly informed about planned activities throughout the construction process.

4.3 Traffic

14. Requested the project include measures to address alternative parking options for residents’ while work is being carried out. 15. Are concerned about egress and access from the campus and the impact on pedestrian pathways used by students travelling to and from school particularly at peak times.

During the construction planning for the project, consultation will occur with the appropriate road authorities (RMS, and City of Sydney) to ensure the potential impacts to traffic will be minimised. Consideration will also be given to parking options for affected residents, and maintaining safe access routes for pedestrians. SCEGGS Darlinghurst has been identified as a key stakeholder within the REF and will be consulted with prior, and throughout the construction process to ensure works do not interfere with the schools operations. Mitigation measures would be put in place following consultation with the school during construction planning.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 15 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

4.4 Stakeholder consultation

16. Requested that early notice be given. 17. Requested that all affected residents and local businesses be informed of project impacts with sufficient time to plan alternative arrangements. 18. Requested further consultation during the detailed design phase of this project. 19. Requested further discussion around school operational issues coordinating with construction activities to reduce impacts.

As provided in Section 2.4 Sydney Water is committed to informing and consulting with the community and stakeholders. Sydney Water will continue to consult throughout the project design, construction and operation. This will ensure that the community remain informed and that we understand their issues and concerns.

Sydney Water in conjunction with the delivery contractor will further develop and deliver the CSEP for detailed design and delivery phases of the project. The CSEP will be in line with Sydney Water’s communications strategy and community and stakeholder engagement policy.

The delivery contractor must keep the community well informed throughout construction and manage issues and complaints. After commissioning, Sydney Water’s standard policies and procedures for customer and community relations will apply.

4.5 Contaminated soils, acid sulphate soils and asbestos

20. Recommends that the Construction Environmental Management Plan include a specific requirement for construction activities to:  be carried out in the accordance with relevant EPA guidelines made or approved under section 105 of the Contaminated Land Management Act 1997  outline strategies for addressing unexpected contaminated material finds  address management of acid sulphate soils  address management of asbestos. 21. Recommends that the Construction Environmental Management Plan include a specific requirement for a Contaminated Land Management Plan.

As detailed within the REF geotechnical investigations during the pre-construction phase will include testing for acid sulphate soils (ASS) and contamination along the pipeline alignment. As per the REF the delivery contractor will be required to prepare an Acid Sulphate Soils Management Plan during preparation of the CEMP to determine how ASS/PASS would be identified, managed and disposed of appropriately during construction.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 16 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

Also detailed within the REF is that all spoil material will be classified and treated as per the appropriate EPA guidelines. Contractors will be required to prepare a Contaminated Land Management Plan as part of the CEMP to determine appropriate procedures for the management and appropriate disposal of unexpected contaminated material finds, including asbestos.

4.6 Soil and water

22. Recommends that during the preparation of the Construction Environmental Management Plan, Sydney Water develop more detailed requirements for the assessment and management of water quality impacts. 23. Identification of measures and strategies to minimise/manage impacts on receiving waters. Recommends that the required assessment include:  identification of the potential and volumes of water (such as stormwater runoff, seepage, and groundwater) that may need to be managed during the construction process  identification of the need for offsite discharges during construction and any associated treatment requirements  a description of receiving waters, including background water quality  assessment of potential impacts on receiving waters  identification of measures and strategies to minimise/manage impacts on receiving waters.

During the detailed design phase investigations will occur to determine the presence and potential volumes of groundwater. Sydney Water will then consider suitable licensing, if required, and measures for dewatering groundwater, based on predicted flows and water quality. It is likely that groundwater will be pumped into the sewer system if it is found suitable or disposed offsite, therefore having no impact to surrounding receiving waters. As per the REF a Groundwater Management Plan will be prepared as part of the CEMP to detail how groundwater will be tested and disposed of during construction. As detailed in the REF the CEMP will also provide sediment and erosion control measures to be followed during construction to ensure no offsite impacts occur. The issues identified above were raised by the EPA following the submission period and led to additional conditions being placed on the existing EPL 1688 for the Bondi sewerage treatment system. As part of these licence conditions, water quality in Woolloomooloo Bay will be monitored as per a water quality monitoring plan to be prepared and approved by the EPA. The water quality monitoring plan will include baseline monitoring and post construction monitoring.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 17 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

4.7 Non – Aboriginal heritage

24. Recommends the works will require a section 60 application under the Heritage Act 1977 which should include consideration of whether any potential impact to historical relics in this area may still exist and may be harmed by this activity. 25. Depending on the final location of the proposed pumping unit supporting the Domain Carpark, its final design (finish), size and placement should seek to avoid any potential impacts to the heritage values of the State Heritage Register (SHR) listing, if any.

Agreed, as stated within the REF the works are located within the curtilage of a SHR listed property the works will require approval from the Heritage Council of NSW under section 60 of the Heritage Act 1977. There two design options were considered during planning stage. Gravity connection will be pursued during detailed design phase, which will further minimise construction impacts. As only minimal impacts are anticipated, due to the disturbed state of the carpark area, a 57(2) exemption is proposed for this work. A heritage impact statement will be prepared during detailed design, demonstrating minimal environmental impacts, and this will be submitted to the Heritage Council, together with an application for an exemption permit.

27. Heritage Division noted that the Sydney Hydraulic Power Company established and maintained a network of high pressure water powered hydraulics in the late 1880s which extended across much of the current Sydney central business district. It connected to a series of power stations, one of which was located in Woolloomooloo. The pipelines cross the city and their locations are not well recorded. However some members of the National Trust Industrial Heritage Committee have been involved in a recording project. It is recommended that Sydney Water contact the National Trust Industrial Heritage Committee to seek information about any known locations of this system and advice on its identification and recording, if the network is found to coincide with the proposed works.

Sydney Water is committed to minimising potential impacts to heritage within the project area. Sydney Water will liaise with the National Trust Heritage Committee during the detailed design phase of the project to ensure any information about the system and identification is understood. This information will be provided to site personnel via a heritage induction.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 18 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

5 Environmental management

This chapter provides details of the revised mitigation measures for the project. Table 2 lists the revised (final) safeguards for the project with any additional or changed mitigation measures highlighted.

Table 2 Summary of mitigation measures

Aspect Mitigation Measures

Topography, geology  testing for PASS/ ASS will be undertaken during geotechnical and soils investigations as part of pre-construction phase.

 the contractor will prepare an Acid Sulphate Soils Management Plan (ASSMP) as part of the CEMP to detail how it would be identified, managed and disposed of appropriately during construction

 any ASS/ PASS spoil would be stored separately on-site in covered skip bins or sealed containers, to prevent acid leachate entering the stormwater system

 waste classification of fill/ soil material will be undertaken during geotechnical investigations as part of pre-construction phase

 the site induction for construction personnel will include identification of PASS/ ASS and contaminated soil and stop work provisions should it be unexpectedly encountered onsite

Water and Drainage  clean surface run-off will be diverted around worksites, wherever possible

 erosion and sediment controls will be installed in accordance with the ‘Blue Book – Managing Urban Stormwater – Soils and Construction’ (Landcom, 2004)

 erosion and sediment controls will be inspected daily and after rainfall events and repaired/ maintained as required to ensure no offsite impacts

 road pavements and footpaths around the construction site will be regularly swept to prevent off-site tracking of mud and dirt

 any stockpiles will be located in skip bins, away from stormwater drains

 all fuels and chemicals will be stored in an appropriately bunded area at all times (110% capacity) and in accordance with Australian Standards

 plant/ equipment will not be used if there are any signs of fuel, oil or hydraulic leaks

 any re-fuelling of plant or equipment will be undertaken using a mini-tanker with spill response kit or within a designated bunded area away from stormwater drains

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 19 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 containment measures will be used to ensure that all drilling fluids/ slurry is captured onsite and contained (eg. water tight skip bins)

 drilling fluids will be reused wherever possible or disposed to a licenced waste facility

 any leakage of drilling fluids will be cleaned up immediately to prevent offsite impacts

 all vehicles carrying waste capable of discharging liquid (eg. drilling fluids) will be watertight to prevent leaks and will be checked prior to leaving site

 any concrete residue/ wash out will be captured, cleaned up and disposed of to a licenced waste facility

 a vacuum system will be used to collect any run off from concrete or saw- cutting

 testing of groundwater levels and quality will occur as part of further geotechnical investigations undertaken during detailed design

 pre-condition surveys and settlement monitoring will be undertaken on adjacent properties where geotechnical/ engineering reports indicate high risk groundwater dewatering is required

 geotechnical investigations undertaken during detailed design or prior to construction will determine likely groundwater volumes and a licence under the Water Act 1912 will be obtained if these volumes are likely to exceed 3ML/year

 a Groundwater Management Plan will be prepared as part of the CEMP to detail how the groundwater will be tested and disposed of during construction

 the contractor will obtain a Sydney Water Trade Waste Permit for any disposal of groundwater to wastewater system.

 should any dewatering of excavations or groundwater be required during the works, this will be appropriately treated (if required) and disposed of to the wastewater system (after obtaining a Trade Waste Permit) or tankered offsite for disposal at a licensed waste facility.

Flora and fauna  detailed design is to minimise any impacts to the street trees. Construction practices will be modified to minimise impacts during construction phase suiting to the site conditions

 street trees on Riley and Crown Streets are to be retained, wherever possible, by adopting appropriate construction methods (eg. trenchless), in consultation with an arborist during detailed design and construction

 an arborist is to be available on-site during excavation within the root zone of these street trees and to supervise any root cutting required to ensure that impacts to trees are minimised

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 20 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 in consultation with council, the contractor will undertake restoration planting to replace the garden bed on the corner of Crown Street and Sir John Young Crescent, as well as the cul-de-sac area of Yurong Lane and Riley Street

 the contractor will engage an arborist to monitor works during trenching adjacent to the street trees along Darlinghurst Road

 cutting of any major roots (>300mm) will only be undertaken if absolutely necessary and in the presence of a qualified arborist

 hand excavation or boring option will be pursued when in close proximity to the roots of street trees

 trees in the vicinity of construction works will be protected from accidental damage by installing temporary fencing or flagging/ signage before works commence

 any tree branches will be tied back in preference to trimming, if there are located next to construction plant and equipment.

Air quality  dust generating activities will be avoided during windy conditions

 all loads of excavated material or imported material (such as sand) will be covered when being transported to or from the worksite

 all worksites will be monitored for dust generation and water sprays used to suppress dust (particularly during rock breaking activities)

 plant and equipment will be properly maintained and not left idling when not in use

 footpaths, roads, access points and other areas adjacent to the worksite will be swept regularly to minimise any dust generation or dirt tracking

 the number of maintenance shafts left open at any one time and the duration they are open will be minimised.

Noise and vibration  liaise with sensitive receivers about their noise sensitive times.

 inform potentially noise affected neighbours/ businesses about the nature of the construction stages and the duration of noisier activities (eg. rock- breaking)

 contact details will be provided on project signage at each worksite

 noise attenuated equipment, residential class mufflers and noise shielding around stationary plant (eg. generators) will be used at the work site to minimise noise to the extent possible

 plant and equipment will be regularly maintained and replaced/ repaired if they become excessively noisy

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 21 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 the worksite will be arranged to minimise the use of reversing/ movement alarms if possible (i.e. one way in, one way out in forward direction)

 noisy plant (eg. generators) will be located away from potentially noise affected neighbours or behind barriers, such as sheds or walls wherever possible

 construction work will be between 7am-6pm (Monday to Friday), 8am -1pm (Saturday), and no works on Sundays or public holidays, wherever possible

 slings will be used in preference to lifting chains wherever possible

 negotiate with RMS and Sydney City Council to get day time road occupancy licenses

 if out of hours works are unavoidable (due to lane closure requirements specified by RMS or recommended by council) the following will occur: - negotiate with RMS and City of Sydney earlier start times for road closures - the contractor will seek approval from the Sydney Water Project Manager outlining the specific times and dates and providing justification - the contractor’s environmental representative will assess whether additional impact assessment is required and what specific noise mitigation measures are possible (eg. monitoring, barriers, acoustic blankets) - high noise activities (such as saw-cutting/ pavement breaking) will be scheduled at the beginning of the shift (eg. prior to 11pm) where possible - workers will be briefed on the need to minimise unnecessary noise (such as shouting, banging doors, etc) - works will be planned to minimise the need for reversing beepers/ movement alarms on equipment - provide adequate measures in the stakeholder consultation plan to ensure affected residents and businesses are suitably informed throughout the construction process - all potentially impacted residents and sensitive receivers will be notified at least 7 days prior to commencing out of hours works and given contact details should they wish to make a complaint - regular updates will be provided to inform residents of progress of out of hours works and likely noise impacts - one on one consultation with sensitive receivers to determine appropriate mitigation measures for the construction works

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 22 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

- any road plates which are required prior to road restoration will be properly installed and maintained to ensure they don’t produce excessive noise as traffic travels over them - any noise complaints will be investigated and responded to promptly, including implementing additional noise mitigation measures, such as respite periods for rock-hammering and additional site hoarding as required

 prepare Construction Noise and Vibration Management Plan as part of CEMP following consultation with sensitive receivers including: - Identification of nearby residents and other sensitive land users. - Description of approved hours of work and what work will be done during these times. - Proposed noise mitigation measures to be incorporated and monitored during construction phase. - Description of what work practices will be applied to minimise noise. - Description of the complaints handling process. - as part of the management plan, residents affected by disruption with intrusive noise should be offered with respite measures.

 the site induction for construction personnel will include a section on the noise sensitivities of the area and appropriate work practices to minimise noise. Vibration - pre-condition surveys will be completed prior to the commencement of construction to document the existing condition of adjacent buildings, heritage items and structures along the alignment - vibration levels associated with rock-breaking/ hammering/ vibratory rolling will be monitored to ensure that the criteria of 3mm/sec at the boundary of adjacent heritage structures is not exceeded (as per the German Standard DN 4150-3 Structural Vibration in Buildings – Effects on Structures) - should vibration monitoring indicate an exceedance of the heritage criteria of 3mm/s, smaller equipment and/ or alternate construction methods will need to be employed to meet the criteria - vibration monitoring will also be undertaken in response to any community complaints.

Non-Aboriginal  during detailed design consultation with the National Trust Heritage heritage Committee will occur to determine any potential sensitivities in the project area which are not currently mapped.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 23 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 the site induction for construction personnel will include a section on the history of the area and the potential for uncovering Aboriginal or non- Aboriginal heritage items

 public domain features including sandstone/ trachyte kerbs/ retaining walls, stone paving, original street furniture, cast iron bollards, etc will be retained and protected wherever possible during construction

 any sandstone/ trachyte/ heritage kerbs, retaining wall, pavement or other stonework that needs to be removed for construction will be photographed and numbered to ensure it can be reinstated to the original condition following construction works

 if the original sandstone/ trachyte/ heritage kerbs/ gutter cannot be retained, they will be replaced in accordance with City of Sydney’s Guideline ‘Sydney Streets Technical Specification B4 Kerbs and Gutters’ and in consultation with council

 any other heritage features that are located within the construction zone are to be removed if possible and stored in a safe place offsite until they can be reinstated following construction

 if the heritage feature cannot be removed safely and temporarily stored during construction, consultation with local council prior to construction will be undertaken to agree and document the details for replacement

 all heritage listed items and heritage conservation areas will be located on Site Plans included in the CEMP and all personnel will undergo an environmental induction which will include the location of heritage listed items and work within heritage conservation areas

 any work adjacent to heritage listed properties will be undertaken carefully and a protective barrier installed if possible to prevent any accidental damage

 construction of any property connection lines within a heritage listed property will restore the site to pre-existing conditions and not detract from the heritage values of the property

 pre-condition surveys will be undertaken of any heritage listed property within 1m of any proposed rock-breaking/ jack-hammering activities

 the contractor will take all necessary measures to support the existing s170 listed oviform and hexagonal sewer and access chambers when crossing over the pipe or when working adjacent to the pipe to ensure no damage to the existing structure

 the contractor will ensure that the detailed design allows adequate distance to the s170 listed Woolloomooloo viaduct structure so that no impacts will occur, in consultation with RailCorp

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 24 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 an exemption permit will be obtained from the Heritage Council for any works in the Domain Carpark (within the RBGD curtilage) prior to construction

 in the unlikely even a relic (or suspected relic) of heritage significance is discovered, all work in that area will cease and the Sydney Water’s Project Manager/ Heritage Advisor contacted for further advice.

Aboriginal heritage  the site induction for construction personnel will include a section on the history of the area and the potential for uncovering Aboriginal or non- Aboriginal heritage items

 in the unlikely event a suspected Aboriginal object is uncovered during construction, all works in the area will cease and the Sydney Water Project Manager and Heritage Advisor will be notified for further advice and assessment

 if suspected human remains are uncovered during construction, all works in the area will cease and Sydney Water, Police and OEH will be notified for further advice and assessment.

Traffic and access  traffic management plans will be prepared in accordance with the Traffic Control at Work Sites Manual (RTA, 2010) and RTA Specifications G10 – Control of Traffic, and in consultation with council

 any lane closures will be strictly in accordance with council or RMS road occupancy licences/ permits conditions, including notifying local residents and businesses

 trenching in roadways will be undertaken in short sections using temporary road plates to enable residents/ businesses to access their building as needed throughout the works

 qualified traffic controllers will be used to direct traffic around worksites

 safe access points to work areas from the adjacent road network will be established, including safety measures such as security fencing and/ or barriers, maintaining site distance requirements, signage and the provision of traffic management measures

 consultation with public transport operators and road users in the area will be undertaken prior to any lane closures/ traffic changes

 consultation with local residents and businesses will be undertaken prior to any parking lane closures

 parking for construction personnel and car-pooling (if required) will be investigated during construction planning so as to not cause too much impact on public parking spaces

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 25 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 pedestrian and vehicle access will be maintained to properties by alternative means, such as ramps, moveable steel road plates, diversions during any construction across driveway/ access points

 consultation with residents/ businesses will occur prior to any access/ driveway disruptions.

 access to the Darlinghurst Fire Station and St Vincent’s hospital will be maintained at all times during construction.

Waste  waste will be minimised during construction planning and delivery according to the hierarchy of avoid, reuse, recycle and finally dispose

 a waste log (including receipts) will be maintained by the contractor onsite to track all wastes leaving site

 handling and disposal of any dangerous goods will occur according to Australian Standards

 all spoil material will be appropriately classified and disposed of in accordance with EPA’s waste guidelines (2014).

Social and visual  one on one consultation with affected stakeholders will be undertaken prior to works

 all construction equipment and materials will be located within the designated worksite area or laydown area and not left lying in adjoining areas

 construction worksites and compound/ laydown areas will be maintained in a clean and tidy condition at all times

 accurate public information signs will be displayed while work is in progress and until site restoration is complete

 any lighting required for out of hours works will be positioned to minimise any light spill to adjacent residents

 where practicable, screens will be erected around the worksite bore pits to minimise visual impacts on adjacent land uses

 on completion of works, all disturbed areas will be restored to their pre- construction condition

 residents and businesses will be notified in advance of traffic and noise disruptions through letterbox drops.

 close consultation will occur with SCEGGs to ensure appropriate scheduling of works and access to the school at all times

 any accidental damage to public or private property as a result of construction works will be repaired in consultation with the relevant agency or landowner

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 26 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

 prepare a community involvement plan to ensure affected residents are suitably informed throughout the construction process

 consultation with City of Sydney to ensure the project design does not impact on any future works proposed by City of Sydney.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 27 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

6 Conclusion

6.1 Justification of the proposal As detailed within the REF the project is part of the Hot Spots 3 Wet Weather Overflow Abatement Program (the program). The program is required to demonstrate Sydney Water’s commitment to achieving ongoing environmental improvement to the EPA, as part of its Environmental Protection Licences and Pollution Reduction Programs The project objectives are to:

 construct all works necessary to completely separate the wastewater and stormwater system in the Woolloomooloo area

 improve visual impacts through the removal of wastewater related gross pollutants from the streets and the harbour surrounding Woolloomooloo

 reduce the nuisance odour emanating from the street gully pits in the Woolloomooloo area  construct the new system to meet a discharge frequency target of 20 overflow events in 10 years. The justification and objectives of the project remain unchanged following the preparation of this Decision Report.

6.2 Determination of the project Sydney Water has assessed the potential impacts of the proposal on the environment in accordance with the requirements of Part 5 of the EP&A Act. The public consultation process undertaken for the proposal is outlined in Section 2 of this report. Seven submissions were received following the public display of the Woolloomooloo Wastewater Stormwater Separation REF in March, 2016. The main issues raised in the submissions received included:

 Noise and vibration  Stakeholder consultation  Scope of works

 Traffic and access  Contaminated soils, acid sulphate soils and asbestos  Soil and water

 Non - Aboriginal heritage

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 28 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

Sydney Water has considered and responded to the issues raised in the submissions in Section 4. In considering the issues raised, Sydney Water has adopted some additional mitigation measures, as listed in Table 2. Sydney Water considers the proposed mitigation measures are appropriate to manage the project’s potential impacts and no changes to the project are required. The project is not likely to result in a significant impact to the environment.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 29 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water. 7 References

Environmental Protection Agency (EPA) (2009), Interim Construction Noise Guidelines

Environmental Protection Agency (EPA) (2014), Waste Classification Guidelines

Landcom (2004), Managing urban stormwater: soils and construction (the blue book) Sydney Water (2016), Review of Environmental Factors Woolloomooloo Wastewater and Stormwater Separation Project.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 31 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water. 8 Glossary and abbreviations

ASS: Acid Sulphate Soils CEMP: Construction Environmental Management Plan. CNVMP: Construction Noise Vibration Management Plan CSEP: Community and Stakeholder Engagement Plan dB(A): A-weighted decibels Environmental impact: Any change to the environment, whether adverse or beneficial, wholly or partially resulting from an organisation's activities, products and services. EPA: Environmental Protection Authority EP&A Act: Environmental Planning and Assessment Act 1979. EP&A Regulation: Environmental Planning and Assessment Regulation 2000. EPLs: Environment Protection Licences issued by the Environmental Protection Authority (EPA) Groundwater: Water found below the surface, usually in porous rock or soil or in underground aquifers (natural underground formations that contains sufficient saturated, permeable material to yield significant quantities of water). Horizontal Directional Drilling (HDD): a steerable trenchless method of installing underground pipes, conduits and cables using a surface launched drilling rig, with minimal impact on the surrounding area.

Irrigation: Controlled application of water for agricultural or horticultural purposes through manmade systems to supply water requirements not satisfied by rainfall. Kilolitre (kL): One thousand litres of water.

LEP: Local Environment Plan - a statutory environmental planning instrument under the EP&A Act. LGA: Local Government Area. NPWS: National Parks and Wildlife Service.

NOW: NSW Office of Water, OEH: Office of Environment and Heritage PASS: Potential Acid Sulphate Soils POEO Act: Protection of the Environment Operations Act. Pollutants: Contaminants in water, soil or air that, when in sufficient quantity, may cause environmental degradation. Pollution: Any harmful or undesirable change in the physical, chemical or biological quality of air, water or soil as a result of the release of chemicals, radioactivity, heat and large amounts of organic matter. REF: Review of Environmental Factors.

Receiving water: A stream, river, pond, lake or ocean that receives stormwater or wastewater discharges. Regulators: Organisations that set standards and guidelines for Sydney Water.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 32 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.

ROL: Road Occupancy Licence RMS: Roads and Maritime Services Runoff: Water that flows across the land surface and does not soak into the ground. Sediment: Soil or other particles that settle to the bottom of lakes, rivers, oceans and other waters. SEPP: State Environmental Planning Policy - a statutory environmental planning instrument under the EP&A Act. Sewage: The wastewater from homes, offices, shops, factories and other premises discharged to the sewer. Approximately 99 per cent of sewage is water. Sewerage system: The network of pipes, pumping stations and treatment plants used to collect, transport, treat and discharge sewage (wastewater). SHR: State heritage register. Stakeholder: A stakeholder is any individual or group, which can affect or is affected by an organisation's activities.

Stormwater system: The system of pipes, canals and other channels used to carry stormwater to bodies of water, such as rivers or oceans. The system does not usually involve any treatment. Stormwater: Rainwater that runs off the land, frequently carrying various forms of pollution such as litter and detritus, animal droppings and dissolved chemicals. Upgrade: To improve something. Waste: Discarded, rejected, unwanted, surplus or abandoned substances, excluding gas, water, wastewater, beneficially used biosolids and reuse water. Wastewater: The dirty water or wastewater that goes down the drains of homes, offices, shops, factories and other premises and is discharged into the wastewater system. Also known as sewage.

Wastewater system: The system of pipes and pumping stations for collecting and transporting wastewater from each property to the wastewater (sewage) treatment plant. Wastewater Treatment Plant: A treatment facility which improve water quality via methods including screening or sedimentation, biological process and purification. Water quality: Physical, chemical and biological measures of water. Waterways: All streams, creeks, rivers, estuaries, inlets and harbours.

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 33 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water. Appendix A: Submissions Received

Woolloomooloo Wastewater and Stormwater Separation Project | Decision Report Page | 34 © Sydney Water Corporation (2014). Commercial in Confidence. All rights reserved. No part of this document may be reproduced without the express permission of Sydney Water.