nsw department of justice...may only be used and relied on by the for the purpose agreed between ghd...

NSW Department of Justice Dillwynia Correctional Centre and Outer Metropolitan Multi

Purpose Correctional Centre Review of Environmental Factors

November 2018

GHD | Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose Correctional Centre

REF

This report has been prepared by GHD for the NSW Department of Justice and may only be used and relied on by the for the purpose agreed between GHD and the NSW Department of Justice as set out in section 1 of this report. GHD otherwise disclaims responsibility to any person other than the NSW Department of Justice arising in connection with this report. GHD also excludes implied warranties and conditions, to the extent legally permissible. The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the scope limitations set out in the report. The opinions, conclusions and any recommendations in this report are based on conditions encountered and information reviewed at the date of preparation of the report. GHD has no responsibility or obligation to update this report to account for events or changes occurring subsequent to the date that the report was prepared. The opinions, conclusions and any recommendations in this report are based on assumptions made by GHD described in this report (refer section 1). GHD disclaims liability arising from any of the assumptions being incorrect.

GHD | Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose Correctional Centre

REF | i

Declaration As part of the NSW Government's Prison Bed Capacity Program, the NSW Department of Justice is proposing to expand Dillwynia Correctional Centre (DCC) and refurbish Outer Metropolitan Multi Purpose Correctional Centre (OMMPCC) at Berkshire Park.

This review of environmental factors (REF) has been prepared by GHD Pty Ltd and presents an assessment of the potential impacts of the construction and operation of the expansion of DCC and refurbishment of OMMPCC (the proposal).

The Department of Justice is a public authority and the determining authority for the proposal as defined by the Environmental Planning and Assessment Act 1979 (EP&A Act). The proposal satisfies the definition of an activity under Part 5 of the EP&A Act, and as such, the Department of Justice must assess and consider the environmental impacts of the proposal before determining whether to proceed.

This REF has been prepared in accordance with sections 5.5 and 5.7 of the EP&A Act and clause 228 of the Environmental Planning and Assessment Regulation 2000. This REF provides a true and fair assessment of the proposal in relation to its likely effects on the environment. It addresses, to the fullest extent possible, all matters affecting or likely to affect the environment as a result of the proposed activity.

On the basis of the information presented in this REF, and the implementation of the proposed mitigation measures, it is concluded that:

1. The proposal is not likely to have a significant impact on the environment and therefore anenvironmental impact statement is not required.

2. The proposal is not likely to significantly affect threatened species, populations, ecologicalcommunities, or critical habitat. Therefore a species impact statement is not required.

3. The proposal is not likely to affect any Commonwealth land, is not being carried out onCommonwealth land, or significantly affect any matters of national environmentalsignificance listed under the Environment Protection and Biodiversity ConservationAct 1999.

Subject to implementation of the measures to avoid, minimise or manage the environmental impacts listed in this REF, the proposal is recommended for approval.

Name of author and qualifications

Dharini Collaguazo, BTP, MEM

Designation Senior Environmental Planner

Name of reviewer and qualifications

Greg Marshall, BE(Civil), CEnvP (Impact Assessment)

Designation Technical Director

Organisation GHD Pty Ltd

Signature

Date 30 November 2018

GHD | Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose Correctional Centre REF

| v

Table of contents Declaration ................................................................................................................................................ i

Verification and determination ................................................................................................................. iii

Glossary of terms and abbreviations ....................................................................................................... xi

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

1.1 Introduction .......................................................................................................................... 1

1.2 The proposal ........................................................................................................................ 1

1.3 Location of the proposal ....................................................................................................... 2 1.4 Land description and ownership .......................................................................................... 3

1.5 REF scope and methodology ............................................................................................... 3

2. Statutory considerations ................................................................................................................. 6

2.1 Approval and assessment requirements under the Environmental Planning and Assessment Act 1979 .......................................................................................................... 6

2.2 Environmental planning instruments .................................................................................... 7

2.3 Other legislative considerations .........................................................................................11

2.4 Summary of approval requirements ...................................................................................14

3. Need for the proposal ...................................................................................................................15

3.1 Dillwynia Correctional Centre .............................................................................................15 3.2 Outer Metropolitan Multi-Purpose Correctional Centre......................................................16

3.3 Context for the proposal .....................................................................................................17

3.4 Options considered ............................................................................................................18

4. Description of the proposal –Dillwynia Correctional Centre .........................................................20 4.1 The proposal ......................................................................................................................20

4.2 Construction of the proposal ..............................................................................................22

5. Description of the proposal –Outer Metropolitan Multi Purpose Correctional Complex ..............26

5.1 The proposal ......................................................................................................................26

5.2 Construction of the proposal ..............................................................................................28

6. Community and stakeholder consultation ....................................................................................32

6.1 Approach to consultation ...................................................................................................32

6.2 Consultation activities and outcomes.................................................................................32

6.3 Ongoing consultation .........................................................................................................32

7. Environmental assessment – Dillwynia Correctional Centre .......................................................33 7.1 Traffic, parking and access ................................................................................................33

7.2 Noise and vibration ............................................................................................................43

7.3 Biodiversity .........................................................................................................................56

7.4 Bushfire hazard ..................................................................................................................68

7.5 Soils, erosion and water quality .........................................................................................73 7.6 Socio-economic..................................................................................................................77

7.7 Other issues .......................................................................................................................83


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8. Environmental assessment -Outer Metropolitan Multi Purpose Correctional Centre ..................89

8.1 Traffic, parking and access ................................................................................................89 8.2 Noise and vibration ............................................................................................................99

8.3 Biodiversity .......................................................................................................................109

8.4 Bushfire hazard ................................................................................................................115

8.5 Soils, erosion and water quality .......................................................................................120

8.6 Socio-economic................................................................................................................123

8.7 Other issues .....................................................................................................................128

9. Environmental management ......................................................................................................135

9.1 Environmental management approach ............................................................................135

9.2 Consolidated list of mitigation measures - Dillwynia Correctional Centre .......................136 9.3 Consolidated list of mitigation measures – Outer Metropolitan Multi Purpose

Correctional Centre ..........................................................................................................143

10. Conclusion ..................................................................................................................................149

10.1 Justification of the proposal .............................................................................................149

10.2 Summary of REF findings ................................................................................................149

10.3 Conclusion .......................................................................................................................149 10.4 Recommendation .............................................................................................................150

11. References .................................................................................................................................151


| vii

Table index Table 2-1 Infrastructure SEPP consultation requirements ................................................................... 8

Table 2.2 Consideration of the provisions of SREP 20 ......................................................................10

Table 2-3 Consideration of relevant legislation ..................................................................................12

Table 7-1 Level of service criteria for intersections ............................................................................36

Table 7-2 Existing intersection performance ......................................................................................36

Table 7-3 On-site parking provision ...................................................................................................37

Table 7-4 DCC estimation of construction vehicle movement ...........................................................39

Table 7-5 Intersection performance during construction ....................................................................39

Table 7-6 Intersection performance post-development .....................................................................41

Table 7-7 Average background and ambient noise levels .................................................................46

Table 7-8 Construction noise management levels .............................................................................46

Table 7-9 Guideline values for short term vibration on structures (DIN4150-3) ................................47

Table 7-10 Guideline values –for transient vibration resulting in minimal risk of cosmetic damage (BS 7385-2) ..........................................................................................................47

Table 7-11 Minimum safe working distances (Roads and Maritime, 2016) .........................................48

Table 7-12 Operational noise trigger levels for residential receivers ...................................................48

Table 7-13 Noise trigger levels – non-residential receivers .................................................................48

Table 7-14 Road traffic noise criteria ...................................................................................................49

Table 7-15 Construction scenarios for DCC proposal ............................................................................49

Table 7-16 Summary of construction noise predictions .......................................................................52

Table 7-17 Summary of social impacts during construction ................................................................80

Table 7-18 Summary of social impacts during operation .....................................................................82

Table 8-1 Level of service criteria for intersections ............................................................................92

Table 8-2 Existing intersection performance ......................................................................................92

Table 8-3 On-site parking provision ...................................................................................................93

Table 8-4 OMMPCC estimation of construction vehicle movement ..................................................95

Table 8-5 Intersection performance during construction ....................................................................95

Table 8-6 Intersection performance post-development .....................................................................97

Table 8-7 Average background and ambient noise levels ...............................................................101

Table 8-8 Construction noise management levels ...........................................................................101

Table 8-9 Guideline values for short term vibration on structures (DIN4150-3) ..............................102

Table 8-10 Guideline values –for transient vibration resulting in minimal risk of cosmetic damage (BS 7385-2) ........................................................................................................102

Table 8-11 Minimum safe working distances (Roads and Maritime, 2016) .......................................102

Table 8-12 Operational noise trigger levels for residential receivers .................................................103


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Table 8-13 Noise trigger levels – non-residential receivers ...............................................................103

Table 8-14 Road traffic noise criteria .................................................................................................103

Table 8-15 Construction scenarios ....................................................................................................104

Table 8-16 Summary of construction noise predictions .....................................................................105

Table 8-17 Summary of social impacts during construction ..............................................................126

Table 8-18 Summary of social impacts during operation ...................................................................127

Table 9-1 CEMP structure ................................................................................................................135

Figure index Figure 1-1 Site location ............................................................................................................................. 5

Figure 4-1 Dillwynia construction site compound, parking and access ..................................................24

Figure 5-1 OMMPCC construction site compound, parking and access ...............................................31

Figure 7-1 Surrounding road network .....................................................................................................34

Figure 7-2 Intersection traffic survey location.........................................................................................35

Figure 7-3 Existing parking locations .....................................................................................................37

Figure 7-4 Potential workforce parking locations ...................................................................................40

Figure 7-5 Noise monitoring locations, noise catchment areas and sensitive receivers .......................45

Figure 7-6 Existing vegetation – DCC expansion site ............................................................................58

Figure 7-7 Trees on eastern side of the DCC expansion site ................................................................59

Figure 7-8 Trees along the northern boundary adjacent to car park in background, showing part of Shine for Kids child care facility on the right ..................................................................59

Figure 7-9 Existing vegetation – Car park extension area .....................................................................62

Figure 7-10 Lines of planted Spotted Gums ...........................................................................................63

Figure 7-11 Site Map showing DCC and OMMPCC proposed building footprints in relation to bushfire prone vegetation and buffer .................................................................................70

Figure 8-1 Surrounding road network .....................................................................................................90

Figure 8-2 Intersections traffic surveys locations ...................................................................................91

Figure 8-3 Existing parking locations .....................................................................................................93

Figure 8-4 Potential workforce parking locations ...................................................................................96

Figure 8-5 Surveyed trees and vegetation at OMMPCC ......................................................................112

Figure 8-6 New Asset Protection Zone dimensions south-east of OMMPCC ......................................118


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Appendices Appendix A - Clause 228 factors and ecologically sustainable development considerations

under the EP&A Act

Appendix B – Proposal plans – DCC Site

Appendix C – Proposal plans – OMMPCC Site

Appendix D – Traffic and parking impact assessment

Appendix E – Acoustic assessment

Appendix F - Arboricultural assessment

Appendix G – Bushfire assessment report

Appendix H – Social impact assessment

GHD | Report for Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose

Correctional Centre, 2127421 | xi

Glossary of terms and abbreviations

Abbreviation Definition AADT annual average daily traffic ABS Australian Bureau of Statistics AHD Australian Height Datum APZ Asset Protection Zone AHIMS Aboriginal heritage information management system ASS Acid Sulfate Soil BC Act Biodiversity Conservation Act 2016 CEMP construction environmental management plan CLM Act Contaminated Land Management Act CSI Corrective Services Industries CSNSW Corrective Services NSW dBA A-weighted decibels, which are an expression of the relative loudness of sounds

in air as perceived by the human ear DCC Dillwynia Correctional Centre DECC Department of Energy and Climate Change DECCW Department of Energy, Climate Change and Water DP deposited plan DSI Detailed Site Investigation EP&A Act Environmental Planning and Assessment Act 1979 EP&A Regulation Environmental Planning and Assessment Regulation 2000 EPA Environment Protection Authority EPBC Act Environment Protection and Biodiversity Act 1999 GHD GHD Pty Ltd Hz Hertz, which is a measure of frequency Infrastructure SEPP State Environmental Planning Policy (Infrastructure) 2007 JMCC John Morony Correctional Complex DoJ NSW Department of Justice km kilometres L litre/s LGA local government area LEP local environmental plan m2 square metre/s m metre/s mbgl metres below ground level mm millimetre/s NPI National Pollutant Inventory NSW New South Wales NRAtlas NSW Natural Resource Atlas OEH Office of Environment and Heritage OMMPCC Outer Metropolitan Multi Purpose Correctional Centre POEO Act Protection of the Environment Operations Act Proposal The expansion of the DCC and refurbishment of OMMPCC. Proposal site The immediate location of the proposal, which is the area that has the potential

to be directly disturbed by construction.

GHD | Report for Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose

Correctional Centre, 2127421 | xii

REF review of environmental factors Roads and Maritime Roads and Maritime Services RTA Roads Traffic Authority SEPP State Environmental Planning Policy SHR State Heritage Register Study area Consists of land in the vicinity of the proposal site, including land that has the

potential to be indirectly impacted by the proposal. SRZ Structural Root Zone SULE Safe Useful Life Expectancy t tonne/s TPZ Tree Protection Zone

GHD | Report for NSW Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose

Correctional Centre, 2127421 | 1

1. Introduction 1.1 Introduction

Justice Infrastructure and Assets, on behalf of Corrective Services NSW (a division of the NSW Department of Justice) is proposing to expand Dillwynia Correctional Centre (DCC) and refurbish Outer Metropolitan Multi Purpose Correctional Centre (OMMPCC) located in Berkshire Park near Windsor.

The construction and operation of the proposed expansion of DCC and refurbishment of OMMPCC (referred to as ‘the proposal’ for the purposes of this document) is subject to assessment and determination under Part 5 of the NSW Environmental Planning and Assessment Act 1979 (the EP&A Act). The Department of Justice (DoJ) commissioned GHD Pty Ltd (GHD) to assess the potential environmental impacts of the proposal, and prepare a review of environmental factors (REF) in accordance with the EP&A Act.

DoJ is the proponent and determining authority of the proposal for the purposes of this REF.

1.2 The proposal

1.2.1 Proposal objectives

The proposal forms part of the NSW Government’s Prison Bed Capacity Program. The objectives of this program are to:

provide additional capacity within the NSW correctional system in the medium term (next two to four years)

increase the capacity of the NSW correctional system to meet demand, delivering on the government’s promise to maximise existing capacity and provide future long term requirements

reduce the reliance on high risk beds in the correctional system

deliver versatile physical assets that can be reutilised to meet future demands with minimal disruption or overcrowding

enhance operational efficiencies across the broader correctional services network through reduction in prisoner transport

ensure continuous access to custodial services that are geographically relevant.

The objectives of the proposal are to:

increase the operational capacity of DCC by adding maximum security beds for female inmates through the provision of additional accommodation and support facilities

enhance the capability of OMMPCC within its existing secure perimeter to accommodate a range of male inmates up to medium security classification.

1.2.2 Key features of the proposal

The proposal consists of two components:

construction of a new accommodation and services compound east of and adjoining the existing DCC, the extension of the staff and visitor car park (referred to as ‘the DCC proposal’ for the purposes of this document), and



replacement of accommodation blocks at Outer Metropolitan Multi Purpose Correctional Centre, construction of a new gatehouse building and ancillary car park works (referred to as ‘the OMMPCC proposal’ for the purposes of this document).

The key features of the proposal are summarised below:

Dillwynia Correctional Centre

construction of five new accommodation units with maximum security (three 48 bed-units and two 52-bed-units)

construction of a management unit with 10 beds, consisting of five segregation cable beds and five observation beds

upgrade to five existing segregation beds with CCTV monitoring cells

additional staff key watchers (cabinet that store all prison keys, accessible only by iris scan) to existing gatehouse

construction of new visits area with provision for maximum security

construction of a new health centre, incorporating five observation/ assessment cells to support the inmates requiring further detailed medical assessment or support

new education, programs and interview facilities including classrooms and library

construction of a new food retherm unit

construction of industries unit including laundry

expansion of the gatehouse, including new master control room

inmate reception to provide service to the whole centre within the maximum secure of the facility

expansion of staff and visitors car park.

Outer Metropolitan Multi Purpose Correctional Centre

construction of two medium security double storey 48 bed accommodation blocks and three minimum security double storey 48 bed accommodation blocks

construction of one five-bed segregation unit

construction of new administration and reception area

construction of a new gatehouse

construction of new fence from the existing fence across the clinic and around between the minimum security accommodation compound.

A detailed description of the proposal is provided in Sections 4 and 5 of this REF.

1.3 Location of the proposal

The proposal is located within the John Morony Correctional Complex (JMCC) located in the suburb of Berkshire Park, in Penrith City Council local government area (LGA). John Morony Correctional Complex is located approximately 59 km northwest of the Sydney central business district (CBD) and 5 km south of Windsor.

The complex has a total area of about 133 hectares and consists of the following facilities:

the John Morony Correctional Centre

the Outer Metropolitan Multi Purpose Correctional Centre (OMMPCC)

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Dillwynia Correctional Centre (DCC)

office buildings including support services and units relating to the Security and Intelligence Branch

the K9 (dog) unit

specialised program unit called the RSPCA NSW – CS NSW Dog Rehabilitation Program

wildlife centres which gives the inmates opportunities to work with the NSW Wildlife Information Rescue and Education Service (WIRES) and Sydney Metropolitan Wildlife Services

shooting range

an on-site sewage treatment plant.

The complex is operated by Corrective Services NSW and accepts prisoners charged and convicted under NSW and/or Commonwealth legislation.

The proposal sites for the purpose of this REF are distinguished as follows:

DCC site (proposal site related to the expansion of DCC) - existing vacant land to the east of the DCC. The DCC site is an irregular shaped piece of land bounded by internal service roads of JMCC on all sides. The existing DCC facilities are situated to the west of this site.

OMMPCC site (proposal site related to the refurbishment of OMMPCC) – land within the existing security perimeter of OMMPCC and the adjacent car park. The OMMPCC site is bounded by other facilities within JMCC to the north, west and south and heavily vegetated bushland to the east/ south east.

The proposal sites are shown in Figure 1-1.

1.4 Land description and ownership

The proposal sites are located within Lot 1 of deposited plan (DP) 740367, which is owned by the Minister of Justice. It has a street address of 2 The Northern Road, Berkshire Park.

1.5 REF scope and methodology

1.5.1 Scope and purpose of the REF

The purpose of this REF is to assess the results of the environmental impact assessment of the proposal, and provide information about the proposal as an input to the determination process. DoJ (as the determining authority) will consider the findings of the REF as part of the determination process.

The REF has been prepared to meet the requirements of sections 5.5 and 5.7 of the EP&A Act and clause 228 of the Environmental Planning and Assessment Regulation 2000 (EP&A Regulation).

In summary, the REF will assist DoJ to:

determine whether the proposal should be approved, taking into account matters affecting or likely to affect the environment (in accordance with section 5.5 of the EP&A Act)

determine whether the proposal is likely to have a significant effect on the environment or significantly affect threatened species, populations or ecological communities or their habitats

develop appropriate conditions (based on the mitigation measures within the REF) to be attached to any approval granted.



The detailed design, construction and operation of the proposal will need to implement the outcomes and mitigation measures described in this REF. If any substantive changes to the proposal as described in this REF occur, a consistency assessment and, if required, additional impact assessment, may need to be undertaken.

1.5.2 Methodology

Preparing the REF has involved the following tasks:

reviewing existing information on the proposal and relevant plans

reviewing specialist reports, including geotechnical reports, preliminary environmental site assessment and stormwater management reports

site visits

undertaking specialist traffic, parking and access; biodiversity, socio-economic, noise and vibration; and bushfire hazard assessments

a qualitative assessment of other potential environmental and social impacts, including reviews of existing information and database searches

identifying mitigation measures to manage the impacts identified

addressing the requirements of Part 5 of the EP&A Act and clause 228 of the EP&A Regulation.

1.5.3 Early works

A portion of construction activities to be undertaken in the early stages of the proposal have been assessed as part of a separate REF (referred to as the ‘early works REF’).

The works assessed as part of the early works REF include:

works at DCC:

– services diversion

– relocation of SHINE for Kids building.

works at OMMPCC:

– relocation of overhead electricity supply poles

– relocation of gas meters

– relocation of the fire hydrant booster

– temporary road diversion works

– stormwater modifications for car park expansion

– security fencing for stage 2 works

– gatehouse groundworks and substructure

– provide site access for stage 2 works

– demolition of six existing accommodation cottages

– gatehouse groundworks and substructure

– minimum security accommodation block 1, 2, 3 and segregation unit (ground works and sub structure).

The early works REF was determined on 20 September 2018 and therefore these works are not assessed in this REF.

TOORAHROAD

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Dillwynia248 BedExpansion

Car ParkExpansion

ShootingRange

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Car Park andNew GatehouseWorks

Outer MetropolitanMulti-PurposeCorrectional Centre

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Department of JusticeJohn Morony Correctional Complex

Review of Environmental Factors

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Site Location

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Imagery - Department of Finance, Services & Innovation (2017)Bushfire Prone Land - Penrith City Council (Dated: 10/11/2014)

Site location

Regional Locality Map



2. Statutory considerations 2.1 Approval and assessment requirements under the

Environmental Planning and Assessment Act 1979

The EP&A Act and the EP&A Regulation provide the statutory basis for planning and environmental assessment in NSW. The EP&A Act provides the framework for environmental planning and development approvals and includes provisions to ensure that the potential environmental impacts of a development are assessed and considered in the decision making process.

The key requirements of the EP&A Act in relation to the approval and assessment of the proposal are described below:

2.1.1 Consent requirements and application of Part 5

As a result of the application of State Environmental Planning Policy (Infrastructure) 2007 (the Infrastructure SEPP) (refer to section 2.2.1), the proposal is permissible without development consent. Part 5, Division 5.1 of the EP&A Act defines the assessment process for infrastructure activities that do not need development consent.

In relation to Part 5, Division 5.1 activities, section 5.1 defines a determining authority as

‘a Minister or public authority and, in relation to any activity, means the Minister or public authority by or on whose behalf the activity is or is to be carried out or any Minister or public authority whose approval is required in order to enable the activity to be carried out’.

As consent is not required, the proposal is subject to the requirements of Part 5 of the EP&A Act and in accordance with section 5.1, DoJ is the proponent and determining authority for the proposal.

2.1.2 Approval and assessment requirements

For Part 5, Division 5.1 activities, section 5.5(1) of the EP&A Act imposes a duty on a determining authority to ‘…examine and take into account to the fullest extent possible all matters affecting or likely to affect the environment by reason of that activity.’ This REF has been prepared to satisfy DoJ’s obligations as a determining authority under Part 5, Division 5.1 of the EP&A Act.

The factors that need to be taken into account when considering the likely impact of an activity on the environment are provided in clause 228 of the EP&A Regulation. A summary of the results of the assessment of the proposal in accordance with the clause 228 factors is provided in Appendix A.

Section 5.7(1) of the EP&A Act requires that if an activity is likely to have a significant impact on the environment, the determining authority shall not carry out or approve an activity unless it has it has considered an environmental impact statement (EIS) in respect of the activity. Section 7 of this REF assesses the potential impacts of the proposal on the environment. Based on the findings of the assessments undertaken, and with the implementation of the mitigation and management measures provided, it is concluded that the proposal is unlikely to result in significant impacts. As a result, an EIS is not considered to be required.

As an EIS is not required, the proposal does not meet the definition of State significant infrastructure under section 5.12(2) of the EP&A Act and the State Environmental Planning Policy (State and Regional Development) 2011 (the State and Regional Development SEPP). In addition, the proposal does not meet the definitions of State or regionally significant



development under the State and Regional Development SEPP. As a result, approval from the Minister for Planning is not required.

Further information on the application of relevant environmental planning instruments is provided in the following section.

2.2 Environmental planning instruments

2.2.1 State Environmental Planning Policy (Infrastructure) 2007

The Infrastructure SEPP clarifies the consent arrangements for infrastructure projects. According to clause 8(1) of the Infrastructure SEPP, if there is any inconsistency, the Infrastructure SEPP prevails over other environmental planning instruments.

Clarification of consent requirements

The DCC and OMMPCC meet the definition of a ‘correctional centre’ under clause 24 of the Infrastructure SEPP.

Clause 26(3) provides that:

Development for any of the following purposes may be carried out by or on behalf of a public authority without consent on land identified on the Correctional Centres Map:

(a) correctional centres, if the land is identified as “Centre” on the Correctional Centres Map,

(b) ancillary facilities, such as car parks, storage buildings, facilities used for the purpose of educating prisoners, administration buildings, utilities and gate houses, provided any such facility is erected within the boundaries of a correctional complex.

Both the DCC site and OMMPCC site are identified as a “Centre’ on the Infrastructure SEPP Correctional Centres Map. As described in section 1.2.2, the proposal involves development for the purpose of a correctional centre at DCC (expansion of the facility) as well as ancillary facilities at both DCC and OMMPCC.

In addition, clause 26(1) provides that replacement of buildings, alterations of, or additions to and demolition of buildings within the boundaries of an existing correctional centre may be carried out by or on behalf of a public authority on any land.

As described in section 1.2.2, the proposal involves replacement of buildings, alterations and additions to OMMPCC which is an existing correctional centre.

As the proposal meets the definition of a correctional centre, is identified on the Correctional Centres Map and is being carried out on behalf of DoJ, the proposal is permissible without consent in accordance with clause 26(1) and 26(3) of the Infrastructure SEPP.

Consultation requirements

Clauses 13 to 16 of the Infrastructure SEPP outline the requirements for consultation with councils and other public authorities for infrastructure development carried out by or on behalf of a public authority that meets the requirements under these clauses. As described in Table 2-1, the proposal triggers consultation requirements relating to bushfire prone land. Consultation in relation to the proposal has been, and would continue to be undertaken with relevant government agencies and key stakeholders as described in section 5.



Table 2-1 Infrastructure SEPP consultation requirements

Clause Requirements Relevance to the proposal

13 Consultation with councils – development with impacts on council related infrastructure and services

Consultation required where the development would involve/result in: substantial impact on

stormwater management services provided by a council

generation of traffic that would place a local road system under strain

connection to, and a substantial impact on, a council owned sewerage system

installation of a temporary structure on, or the enclosing of, a public place likely to cause a disruption to pedestrian or vehicular traffic that is not minor or inconsequential

excavation that is not minor or inconsequential of the surface of, or a footpath adjacent to, a road for which a council is the roads authority

The proposal would involve the generation of traffic, however the traffic assessment undertaken for the REF (summarised in sections 7.1 and 8.1) concluded that there would be no impacts on the operation of the local road system. The proposal would not involve any additional connections to council’s sewerage or water supply system. The proposal would not involve any impacts to a public place, or significant impacts to footpaths or council roads.

14 Consultation with councils – development with impacts on local heritage

Consultation required where the development would affect the heritage significance of a local heritage item, or of a heritage conservation area, that is not also a State heritage item in a way that is more than minor or inconsequential.

There are no items of local heritage on or within close proximity to the site Therefore this clause does not apply.

15 Consultation with councils – development with impacts on flood liable land

Consultation required for development on flood liable land that would change flood patterns other than to a minor extent.

The proposal would not involve development on flood liable land.

16 Consultation with public authorities other than councils

Consultation required for the following development: adjacent to land reserved under

the National Parks and Wildlife Act 1974

on land in Zone E1 National Parks and Nature Reserves or in an equivalent land use zone

adjacent to an aquatic reserve or a marine park

within the foreshore area within the meaning of the Sydney Harbour Foreshore Authority Act 1998

comprising a fixed or floating structure in or over navigable waters

for the purposes of nominated facilities in bush fire prone land

development on land within the dark sky region that may increase artificial light

development on defence communications facility buffer land.

Part of both DCC and OMMPCC sites are within an area identified as “Bushfire Prone Buffer 100 m” in Penrith’s Bushfire Prone Land Map. Accordingly, the proposal has been referred to NSW Rural Fire Service for comment (refer to section 6).



2.2.2 State Environmental Planning Policy (State and Regional Development) 2011

Sections 4.36(1) and 5.12(2) of the EP&A Act provides that a State environmental planning policy may declare any development, or any class or description of development, to be State significant development or State significant infrastructure (respectively).

State significant development

Clause 8(1) of the State and Regional Development SEPP provides that development is declared to be State significant development if it requires development consent and it is specified in the categories of development in schedules 1 or 2 of the State and Regional Development SEPP. As the proposal is permissible without consent, clause 8(1) does not apply, and the proposal is not State significant development.

Regionally significant development

Clause 20 of the State and Regional Development SEPP defines regionally significant development. In accordance with clause 20(2)(b), this does not include development for which development consent is not required. As a result, the proposal does not meet the definition of regionally significant development.

State significant infrastructure

Clause 14(1) of the State and Regional Development SEPP provides that development is State significant infrastructure if it is permissible without development consent by virtue of the operation of a State environmental planning policy and it is specified in the categories of development in Schedule 3 of the State and Regional Development SEPP.

The categories in Schedule 3 include ‘general public authority activities’, which includes:

(1) Infrastructure or other development that (but for Division 5.2 of the Act and within the meaning of Part 5 of the Act) would be an activity for which the proponent is also the determining authority and would, in the opinion of the proponent, require an environmental impact statement to be obtained under Part 5 of the Act.

Although the proposal is subject to Part 5 of the EP&A Act, an EIS is not considered to be required. As the proposal does not meet this definition, or any of the other definitions in Schedule 3, it is not State significant infrastructure.

2.2.1 State Environmental Planning Policy No.55 (Remediation of Land)

State Environmental Planning Policy No 55 – Remediation of Land (SEPP 55) outlines the matters that planning and consent authorities need to take into account in relation to contamination during land use planning and the assessment of development applications (clause 7). It also specifies the consent requirements for remediation activities.

There is evidence of historical landfilling activities, disposal of tyres and contamination at the proposal site. A detailed Phase 1 environmental site assessment has been undertaken for both DCC and OMMPCC sites. Sections 7.5 and 8.5 summarise the findings of the Phase 1 assessments and it is It is unlikely that any large-scale remediation (Category 1) work would be required as part of the Proposal.

2.2.2 Sydney Regional Environmental Plan No. 20 – Hawkesbury Nepean River

The proposal is located on land to which the deemed SEPP, Sydney Regional Environmental Plan No. 20 – Hawkesbury Nepean River (No.2 – 1997) (SREP 20) applies. The proposal does



not require consent under SREP 20. However, under clause 4(1)(b), the matters listed under clauses 5 and 6 that apply to a proposal must be considered by a public authority or State owned corporation carrying out development that does not require consent. Table 2.2 addresses these matters as they apply to the proposal.

Table 2.2 Consideration of the provisions of SREP 20

Consideration Comment

Clause 5 5(a) The aim of this plan which is to protect the environment of the Hawkesbury-Nepean River system by ensuring that the impacts of future land uses are considered in a regional context

This REF assesses the impacts of the proposal and takes into account the potential regional impacts. The proposal is not anticipated to have any significant and/or regional level impacts on the Hawkesbury-Nepean River system.

5(b) The strategies listed in the Action Plan of the Hawkesbury-Nepean Environmental Planning Strategy

The proposal is not inconsistent with any of the strategies listed in the Action Plan.

5(c) Whether there are any feasible alternatives to the development or other proposal concerned

The need for the proposal and the options considered are discussed in section 3 of this REF.

5(d) The relationship between the different impacts of the development or other proposal and the environment, and how those impacts would be addressed and monitored.

Chapters 7 and 8 provides an assessment of the potential impacts of the proposal including cumulative impacts and identifies mitigation measures to minimise these impacts.

Clause 6

6(1) Total catchment management is to be integrated with environmental planning for the catchment

Chapters 7 and 8 provides an assessment of the potential impacts of the proposal. The proposal would not result in any significant impacts on the catchment. Drainage requirements have been considered as part of the concept design (refer to chapters 4 and 5) with the future development of the catchment in mind.

6(2) The environmental quality of environmentally sensitive areas must be protected and enhanced through careful control of future land use changes and through management and (where necessary) remediation of existing uses

Mitigation measures and environmental management plans, listed in chapter 9, would be implemented to minimise impacts on environmentally sensitive areas such as waterways (refer to sections 7.5 and 8.5 for further detail).

6(3) Future development must not prejudice the achievement of the goals of use of the river for primary contact recreation (being recreational activities involving direct water contact, such as swimming) and aquatic ecosystem protection in the river system.

Mitigation measures and environmental management plans, listed in sections 6 and 7, would be implemented to minimise impacts on water quality (refer section 6.4 for further detail).

6(4) Aquatic ecosystems must not be adversely affected by development which changes the flow characteristics of surface or groundwater in the catchment.

The proposal would not adversely impact (either directly or indirectly) the ecosystems of waterways in the study area. Biodiversity impacts are considered in section 6.5.

6(5) The importance of the river in contributing to the significance of items and places of cultural heritage significance should be recognised, and these items and places should be protected and sensitively managed and, if appropriate, enhanced.

The proposal would not impact on the cultural heritage significance of the river, either directly or indirectly. An assessment of the potential for heritage impacts was undertaken, and the results are summarised in sections 7.7.2 and 8.7.2.



Consideration Comment

6(6) Manage flora and fauna communities so that the diversity of species and genetics within the catchment is conserved and enhanced

The proposal has considered biodiversity impacts and measures to minimise impacts in are summarised in section 6.5.

6(7) The scenic quality of the riverine corridor must be protected.

The proposal would not impact on the scenic quality of the Nepean River.

6(8) Agriculture must be planned and managed to minimise adverse environmental impacts and be protected from adverse impacts of other forms of development.

Not applicable to the proposal.

6(9) Rural residential development should not reduce agricultural sustainability, contribute to urban sprawl, or have adverse environmental impacts

Not applicable to the proposal.

6(10) All potential adverse environmental impacts of urban development must be assessed and controlled.

This REF has assessed and has provided measures to avoid or mitigate potential impacts from the proposal.

6(11) The value of the riverine corridor as a significant recreational and tourist asset must be protected.

The proposal would not impact upon any recreational land or tourism operations.

6(12) Development should complement the vision, goal, key principles and action plan of the Metropolitan Strategy

The proposal is consistent with the Metropolitan Strategy.

2.2.3 Penrith Local Environmental Plan 2010

The Penrith Local Environmental Plan 2010 (the Penrith LEP) applies to the land in which both proposal sites are located. The proposal sites are located within land zoned as SP2 Infrastructure: Correctional Centre.

Under the provisions for this zone, the proposal would be permitted with consent. However, clause 5.12 of the LEP states that ‘…this Plan does not restrict or prohibit, or enable the restriction or prohibition of, the carrying out of any development, by or on behalf of a public authority, that is permitted to be carried out with or without development consent, or that is exempt development, under State Environmental Planning Policy (Infrastructure) 2007’.

As the proposal is permitted without consent under the Infrastructure SEPP, the consent requirements of the Penrith LEP do not apply to the proposal.

2.3 Other legislative considerations

2.3.1 NSW legislation

Other NSW environmental legislation that is directly relevant to the approval and/or assessment of the proposal is considered in Table 2-3.



Table 2-3 Consideration of relevant legislation

Act Potential approval/assessment requirement

Relevance to the proposal

Contaminated Land Management Act 1997

The Act requires that landowners and persons who carry out contaminating activities must notify contamination of land in the circumstances specified in section 60 of the Act.

The JMCC site has not received a remediation order under the Act. Preliminary site investigations were undertaken for both sites. The Preliminary site investigation for DCC identified deep filling (in excess of 5.5 metres) in some sections of the DCC site. Fragments of building rubble were observed also across the surface of the DCC site. Section 5.2 provides information on the management of any potential contaminated material found during construction.

Heritage Act 1977

Approval under section 57(1) for works to a place, building, work, relic, moveable object, precinct, or land listed on the State Heritage Register. The form of the application is specified by section 60. An excavation permit is required under sections 139(1) and (2) to disturb or excavate any land containing or likely to contain a relic. The form of the application is specified by section 140.

The proposal does not include works on a place, building, work, relic, moveable object, precinct or land listed on the State Heritage Register. The proposal would not disturb or excavate any land containing or likely to contain a relic.

National Parks and Wildlife Act 1974

A heritage impact permit under section 87 of the Act to harm or desecrate an Aboriginal heritage object.

There are no listed Aboriginal heritage items or places located on or in the vicinity of the proposal site. As a result of the existing levels of site disturbance, there is a low likelihood that unknown items of Aboriginal heritage significance would be present. Further information is provided in sections 7.3 and 8.3.

Protection of the Environment Operations Act 1997 (POEO Act)

An environment protection licence (EPL) is required for scheduled activities or scheduled development work.

The proposal is not considered to be a scheduled activity or development work, and therefore an EPL is not required for construction or operation.

Roads Act 1993 Approval under section 138 for works to a public road. Under Clause 5(1) of Schedule 2, a public authority is not required to obtain a roads authority’s consent for the exercise of the authority’s functions in, on or over an unclassified road.

The proposal would not be undertaken on a public road.

Biodiversity Conservation Act 2016 (BC Act) (NSW)

The BC Act provides for the listing of threatened species and communities, establishes a framework to avoid, minimise and offset the impacts of proposed development. A biodiversity impact assessment is required to asses any impacts on threatened biota under section 7.3 of the BC Act.

Threatened biota recorded or likely to occur in the study area are discussed in sections 7.3 and 8.3. The DCC and OMMPCC proposals would not have a significant impact on threatened biota listed under the BC Act.



2.3.2 Commonwealth legislation

Environment Protection and Biodiversity Conservation Act 1999

EPBC Act protected matter

Matter located within search radius

Comments Potential impact

World Heritage Property

None The proposal would not impact on any World Heritage properties.

None

National Heritage Places

None The proposal would not impact on any National Heritage properties.

None

Wetlands of international significance (Ramsar sites)

None The proposal would not impact on any wetlands.

None

Threatened ecological communities

4 threatened ecological communities including 3 critically endangered and 1 endangered

An assessment of significance has been prepared to discuss the impact of modifying Castlereagh Scribbly Gum Woodland Endangered Ecological Community (EEC) listed under the EPBC Act. Based on the findings of the assessment, the proposal is unlikely to have a significant impact on the local occurrence of Castlereagh Scribbly Gum Woodland EEC. The proposal would not impact on any threatened ecological communities (refer sections 7.3 and 8.3).

None

Threatened species 31 species including 7 bird species and 7 mammals species

The proposal is located within a highly disturbed and developed urban area with limited vegetation (native or otherwise) that would provide habitat for threatened and migratory species (refer sections 7.3 and 8.3).

None

Listed migratory species

15 species including 1 marine bird species, 6 terrestrial species and 8 wetlands species

None

Nuclear actions None The proposal does not involve a nuclear action.

None

Commonwealth Marine Areas

None No Commonwealth marine areas are located within the search radius.

None

Great Barrier Reef Marine Park

None The Great Barrier Reef Marine Park is outside the search radius.

None

Commonwealth land

One Commonwealth property The proposal would not directly or indirectly impact on the Commonwealth land as works would be restricted to within the boundaries of the existing JMCC.

None



EPBC Act protected matter

Matter located within search radius

Comments Potential impact

A water resource, in relation to coal seam gas development and large coal mining development

Not relevant Not relevant. None

2.4 Summary of approval requirements

As a result of the application of the Infrastructure SEPP, the proposal does not require development consent and it is subject to assessment and determination under Part 5 of the EP&A Act. The proposal is not State significant infrastructure or development, and is subject to determination by DoJ. Additionally no approval is required under the Commonwealth EPBC Act.

Therefore, no additional approvals are required.

GHD | Report for Department of Justice - Dillwynia Correctional Centre and Outer Metropolitan Multi Purpose Correctional

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3. Need for the proposal 3.1 Dillwynia Correctional Centre

3.1.1 Existing facilities

DCC is a medium security facility for female offenders. It was opened in 2004 as the first purpose-built female correctional facility in New South Wales. DCC currently operates at 300 bed capacity, of which 44 are high risk operating beds.

Existing facilities at the DCC include:

inmate accommodation organised in decentralised, single storey accommodation units in a campus style arrangement

gatehouse (including staff and visitor entry, reception, admin, vehicle entry)

programs and education area

library

laundry

food retherm unit

health centre.

3.1.2 Existing operational characteristics

Security and fencing

The DCC security system consists of both static and dynamic security facilities. Electronic security systems are centrally controlled from a Master Control Room located in the Gatehouse (Building A). It is surrounded by five metre high inner and outer perimeter Macem fences with a sterile zone in between the fences.

Staffing

There are on average 54 staff at the DCC on weekdays and 62 staff on weekends spread across four shifts to maintain a continuous operation 24 hours a day, seven days a week.

Operating hours

DCC operates continuously during the day and throughout the year, with the main operating hours being between 8 am to 4 pm (the hours in which inmates spend times out of their cells).

Visits at DCC are managed on a scheduled basis seven days a week, with weekday visits reserved for professional/legal and family visits with children.

Contact visits are facilitated on Saturdays, Sundays and public holidays between 8 am and 4 pm. Multiple inmate cohorts are managed simultaneously.

Visitor numbers

During the weekday, the average number of visitors is 51 people per day. An average of 88 visitors attend sessions held on the weekends.

Site access

The main access to the DCC site is via the JMCC’s access road off The Northern Road. The secured boom gate and external perimeter security are maintained by a contracted security



company which operates Saturday, Sunday, Monday and public holidays between the hours of 6 am and 6 pm.

The peak pedestrian traffic periods for the gatehouse are 6 am to 8 am and 3 pm to 4 pm. Traffic is constant throughout the rest of the day.

Parking

Visitors parking for DCC is available in the areas in front of DCC and to the north of the main entrance road. There are 94 designated visitor parking spaces.

Staff parking is located along the southern and northern sides of the main entrance road. A total of 38 designated staff parking spaces are available.

A total of 530 designated parking spaces are available throughout the JMCC.

3.2 Outer Metropolitan Multi-Purpose Correctional Centre

3.2.1 Existing facilities

The OMMPCC is a minimum security correctional centre for men with a maximum capacity of 380 beds.

Existing facilities at the OMMPCC site include:

ten 25-bed non-cellular accommodation blocks (buildings A-J),

one 80- single storey modular beds (buildings M and N)

one 50-bed honour house (buildings K, L)

gatehouse (including staff and visitor entry, reception, admin, vehicle entry)

programs area

education area

library

chapel

health centre

gymnasium

CSI internal business units

one clinic.

The 25-bed accommodation blocks are divided into two precincts by a five-metre secure fence. For the purposes of this REF, the precincts would be referred to as the northern precinct (buildings A-D) and the southern precinct (E-J). The existing layout of OMMPCC is shown in Appendix C.

3.2.2 Existing operational characteristics

Security and fencing

The OMMPCC security systems consist of both static and dynamic security facilities. Electronic security systems are centrally controlled from a Main Control Room (MCR) located in the gatehouse of the facility. It is surrounded by five metre high inner and outer perimeter Macem fences with a sterile zone in between the fences. Additionally, there is a five metre high =fence dividing the accommodation area into two precincts.



The gatehouse is designed to a minimum security standard. Reception area, administration and inmate visits area are incorporated the gatehouse building.

In 2016, the OMMPCC’s perimeter and electronic security was upgraded from minimum security to medium security standard. No upgrade was made to the gatehouse or alarm system.

Staffing

There are on average 64 staff at the OMMPCC on weekdays and weekends spread across four shifts to maintain continuous operation 24 hours a day seven days a week.

Operating hours

OMMPCC operates continuously during the day and throughout the year, with main operating hours being between 8 am to 4 pm (the hours in which inmates spend times out of their cells).

Visits at OMMPCC are managed on a scheduled basis and multiple inmate cohorts are facilitated simultaneously. Visiting hours are between 8 am and 11.30 am and between 12.30 pm and 3 pm.

Visitor numbers

The average number of visitors to the OMMPCC is undisclosed.

Site access

The main access to the OMMPCC site is via the JMCC’s access road off The Northern Road. The secured boom gate and external perimeter security are maintained by a contracted security company which operates Saturday, Sunday, Monday and public holidays between the hours of 6am and 6pm.

The peak pedestrian traffic periods for the gatehouse are 6 am to 8 am and 3 pm to 4 pm. Traffic is constant throughout the rest of the day.

Parking

Visitors parking is available immediately outside of the OMMPCC north of the roundabout. There are 108 designated visitor parking spaces.

Staff parking is available adjacent to the gatehouse. There are 47 designated parking spaces available.

A total of 530 designated parking spaces are available throughout the JMCC.

3.3 Context for the proposal

3.3.1 Background

Between 2011 and 2016, the inmate population in NSW rose sharply by 33 per cent, placing significant pressure on existing Corrective Services NSW (CSNSW) infrastructure. The population is still rising. In the 2016/17 NSW budget, the NSW Government announced a $3.8 billion infrastructure plan for the state’s prison system to address current and future needs, known as the Prison Bed Capacity Program. The program will deliver new facilities as well as upgrade, expand, or repurpose existing centres over four years.

The aims of the program are to:

provide additional capacity within the NSW correctional system in the medium term (next two to four years)



increase the capacity of the NSW correctional system to meet demand, delivering on the Government’s promise to maximise existing capacity and provide future long term requirements

reduce the reliance on high risk beds in the correctional system

deliver versatile physical assets to meet future demands with minimal disruption or overcrowding

enhance operational efficiencies across the broader correctional services network through reduction in prisoner transport

ensure continuous access to custodial services that are geographically relevant.

3.3.2 Demand for additional capacity

The expansion of DCC is needed to provide CSNSW with additional female prison beds and associated facilities under maximum security within the Sydney Metropolitan area and is an important part of the overall Prison Bed Capacity Program. In the first instance, the proposal would relieve the existing remand populations at both the existing DCC and the Emu Plains Correctional Centre. In the long term, the proposal would provide secondary reception capabilities in the metropolitan area to supplement (but not replace) the Silverwater Women’s Correctional Centre reception capability and provide flexible placement options for some high risk female inmate cohorts that are currently accommodated at Silverwater Women’s Correctional Centre.

The refurbishment of the OMMPCC is required to enable the facility to receive up to medium security inmates. It will also provide CSNSW the capability to safely and securely receive freshly sentenced and remanded inmates into the NSW correctional system.

3.4 Options considered

3.4.1 Strategic option

CSNSW undertook an extensive due diligence exercise on existing Corrective Services sites across NSW to identify potential expansion locations.

The assessment included consideration of a range of infrastructure and operational options in coordination with Justice Infrastructure and Justice Health to address the medium term capacity and operating requirements which align with the CSNSW business case objectives. The assessment identified that expanding and/or developing facilities on existing CSNSW sites was the preferred strategic solution.

A review and further assessment of existing CSNSW sites was undertaken to select the most suitable sites. The selection criteria included site suitability, layout, location, proximity to services, infrastructure constraints, and environmental considerations. Following initial assessment workshops, the site options under consideration were expanded to include sites that would enable medium to long term relief as opposed to medium term, and align with the need for metropolitan remand beds emerging as a priority under the Corrective Services Infrastructure Strategy.

3.4.2 DCC preferred option

Following the initial site selection, master planning and site due diligence was undertaken to better define the preferred projects to be taken forward, and meet medium term capacity needs under the Prison Bed Capacity Program.



The assessment concluded that DCC met the site selection criteria, while at the same time aligning to the Prison Bed Capacity Program requirements for the type of bed capacity most urgently needed.

DCC was selected as the preferred site for expansion as it meets both the operational requirement for additional female prison beds, and has the potential to streamline the expansion process as it aligns with DCC’s existing role and function.

3.4.3 The do nothing option

The do nothing option would involve not undertaking the proposal. The DCC would retain the existing number of beds under this option. This option was not considered acceptable, as it would not meet the objectives of the Prison Bed Capacity Program or the proposal (listed in section 1.2.1).


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4. Description of the proposal –Dillwynia Correctional Centre 4.1 The proposal

The proposal at DCC would involve the construction of new maximum security compound at the currently vacant land east of and adjoining the existing DCC.

4.1.1 New building works

The new building works would consist of the following:

accommodation blocks

management unit

visits area

health centre,

education, programs and interview facilities

industries facility, laundry and retherm unit

bulk stores and staff amenities.

Security accommodation blocks

The new accommodation blocks would consist of five two-storey buildings with maximum security. Three of the buildings would provide 48 beds and two of them would provide 52 beds.

Management unit

A management unit with 10 beds would be constructed on the south west corner of the site, consisting of 5 segregation capable cells and 5 observation cells equipped with CCTV monitoring.

Segregation cells will be used to manage inmates requiring high observation or more intense supervision. Observation cells will be used to support the increase in inmate population and reception screening requirements.

Visits area

Construction of new visits processing and contact visits for maximum security. The visits area would be located adjacent to the maximum security main entry and security screening point. The visits area would include capability for professional and legal visits in separated interview rooms.

The building would also include visitor amenities, including children’s indoor and outdoor play areas and a new Master Control Room.

Health centre

A new heath centre would be constructed, incorporating five observation/ assessment cells to support the inmates requiring further detailed mescal assessment or support. The health centre would be allow access for ambulance via internal access roads.



Education, programs and interview facilities

A new education, programs and interview facilities would be constructed in the new accommodation area incorporating three classrooms, a library and programs and interview facilities.

Industries, laundry and retherm unit

A new industries facility, laundry and retherm unit (food retherm unit) would be constructed to provide for the new accommodation area.

Bulk stores and staff amenities

Staff amenities facility would be provided outside the secure perimeter to cater for the expansion of DCC.

4.1.2 Ancillary works

Expansion of car park

As a result of the increase in inmate accommodation, additional operational staff and visitors are expected. This results in the need for additional car parking capacity on site. The existing at grade staff and visitors car park would be expanded to contain approximately 112 parking spaces.

4.1.3 Operational characteristics

Commencement of operation

It is anticipated that the new facilities would be operational by August 2020.

Hours of operation

Contact visits operating hours for the DCC are Saturday, Sunday and Public Holidays between 8 am and 4 pm. No changes to the current hours of operation are proposed following the expansion.

Inmate, staff and visitor numbers

Once operational, the DCC would have the capacity to accommodate an additional 248 inmates, bringing the total number of inmates to 548. Staff numbers are estimated to increase by about 48 full time equivalent staff during operation, to a total of about 102.

The proposal would also result in increased visitation requirements for the inmate population. It is estimated that the number of visitations would double with peak visitor numbers about 46. Visits would be maintained as per the current operation on a scheduled basis seven days a week between the hours of 8 am and 4 pm.

Site access

Access to the new section of DCC would be via the main access road of John Morony Correctional Complex and via the gatehouse and reception area.

Upon completion of the proposal, DCC is to operate as a single facility with maximum and medium expansion zones. Separate access would be provided via the gatehouse for each of the maximum security visits and the existing medium visits.



4.2 Construction of the proposal

4.2.1 Staging

Construction of the DCC site would be undertaken in three broad stages as described below. Some early works have been considered as part of the Early Works REF(refer to section 1.5.3). Each stage would be undertaken in a serious of phases as shown in the staging plans provided in Appendix B.

Stage 1: Early Works

site clearing

service diversion

bulk earthworks

establishment of temporary access roads.

Stage 2: Main Works

piling for the new accommodation buildings

pouring ground slab

establishment of underground services

delivery of pre-cast slabs by crane

commencement of construction of building spine

pre-cast first floor

commencement of roofing

building completion

landscaping

establishment of secured perimeter fence.

Stage 3: Interface Works

reconfiguring of landscape and fence

completion of all works

commissioning.

4.2.2 Temporary facilities

During construction, temporary facilities would be required on-site. On-site temporary facilities would include office complex, amenities, containers, foreman’s shed and storage containers.

4.2.3 Construction resources

Workforce

An average workforce of 140 personnel has been assumed during the construction period, with a peak workforce of up to 250 people.

Peak workforce is expected to occur for a three month period between June and August 2019.

Equipment

Equipment likely to be required for the construction work would include:


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excavators

dump trucks

compactors

roller

street sweeper

graders

skid steers

dozers

water cart

pile driver

backhoe

concrete boom truck

concrete agitators

mobile crane

boom lifts

semi-trailers

mulcher.

power tools

concrete boom truck

concrete agitators

mobile crane

elevating work platforms

welder

concrete mixers

manitou.

4.2.4 Construction compound, access and vehicle movements

Construction compound

A construction compound would be located south east of the DCC site adjacent to CSI Corporate Offices (shown in Figure 4-1).

Fencing and security

The main expansion area of DCC is predominantly outside of the existing secure perimeter. The integrity and functionality of DCC’s existing perimeter, duress and electronic security systems would be maintained throughout construction.

Vehicle access into the sterile zone of the existing facility would be through the existing secured gate where required to undertake upgrade works to the inmate reception and works associated with integrating the two facilities.

THE NORTHERN R

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DillwyniaCorrectionalComplex

Dillwynia 248 BedExpansion

Car ParkExpansion

FIGURE 1

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Date 24 Sep 2018


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Print date: 24 Sep 2018 - 10:18

LegendSite Boundary

Proposed CarparkProposed BuildingsSite CompoundContractor Parking

Department of JusticeJohn Morony Correctional ComplexReview of Environmental FactorsData Disclaimer

Imagery - Department of Finance, Services & Innovation (2017)

Site location




Construction site access

Construction access to the DCC site would be via the JMCC site access road off The Northern Road.

Access to site by all non-correctional personnel would follow all relevant legislation and CSNSW policies and procedures in place for the centre throughout construction, which will include mandatory CRI (Criminal Record Inquiry) checks and approvals providing clearance for personnel to access the existing secure facility.

Workforce parking

Workforce car parking would be within the temporary car park and adjacent existing carpark, with availability for about 100 cars. Overflow parking would utilise an area clear of vegetation to the north of JMCC’s main entrance. Construction parking is not anticipated to result in the loss of any of the parking spaces for visitors or staff to the DCC.

Vehicle movements

Construction traffic movements would primarily be associated with construction personnel vehicles and the transportation of construction machinery, building materials and equipment to and from the proposal site. Initial estimates for construction vehicle movements to the DCC site would involve a peak daily maximum of up to 47 (two way) heavy vehicle movements spread throughout the day and up to 500 (two way) light vehicle movements associated with construction personnel during the morning and evening peak periods.

4.2.5 Construction timing and work hours

Construction timing

Construction of the proposal would commence in September 2018 and be completed in August 2020.

Construction hours

The majority of construction would occur during the following hours:

Mondays to Fridays between 7 am and 7 pm

Saturdays between 7 am and 1 pm

Sunday and Public Holidays: No works.

4.2.6 Construction environmental management

The approach to environmental management during construction, and required management measures, would be defined by the construction environmental management plan (CEMP), which would be prepared by the construction contractor. Further information is provided in section 7.



5. Description of the proposal –Outer Metropolitan Multi Purpose Correctional Complex 5.1 The proposal

The OMMPCC proposal would involve demolition of existing accommodation blocks and construction of new accommodation units.

5.1.1 Construction and demolition

Construction and demolition works would include the following:

construction of new accommodation blocks

construction of segregation unit

construction of a new gatehouse

construction of new administration and reception area

construction of new fence.

Construction and demolition would be undertaken in stages as described in section 5.2.1.

Demolition of existing accommodation buildings

Ten existing minimum security accommodation buildings would be demolished as shown in Appendix C

New accommodation blocks

The new accommodation blocks would consist of two medium security double storey 48 bed accommodation blocks and three minimum security double storey 48 bed accommodation blocks. The locations of the new buildings are shown in Appendix C.

Each cell block would be split into four 12 bed accommodation units with 24 beds on each floor.

All the buildings within the northern precinct would be built to medium security standards.

All the buildings within the southern precinct would be built to minimum security standards.

The five metre high Macem fences dividing the accommodation area into two precincts would be maintained and enhanced with electronic security.

Segregation unit

A new five-cell segregation unit would be constructed on the eastern boundary of the OMMPCC site as shown on Appendix C.

New gatehouse

A new gatehouse building would be constructed to the north of the existing gatehouse within the existing car park area. On completion the new gatehouse would not result in the loss of any parking spaces. The new gatehouse building would replace the current functions of the existing gatehouse. The existing gatehouse would retain functionality for reception and visits.



New administration, reception area and visits facility

A new administration and reception area would be constructed at the location of the existing gatehouse. The existing visits facility would be maintained and refurbished with some minor internal modifications.

New fence

A new fence would be constructed from the existing fence across the clinic and between the minimum security accommodation compound and the programs building.

5.1.2 Ancillary works

Car park works

The construction of the new gatehouse would require the existing visitors car park to be redesigned and car park provisions would be increased by eight spaces.

Sports grounds/landscaping

Sporting fields including hard courts would be reconfigured and reconstructed as part of the works. The new configuration of the sports facilities is shown in Appendix C.

Services upgrade

Elements of the existing facility would be upgraded to accommodate the repurposed accommodation.

5.1.3 Operational characteristics

Commencement of operation

It is anticipated that the new facilities would be operational by July 2020.

Hours of operation

There would be no change to the operating hours of the OMMPCC (described in section 3.2.2) as a result of the OMMPCC proposal.

Inmate, staff and visitor numbers

Once the OMMPCC proposal is operational, it would have a slightly reduced capacity of 370 inmates (compared to the current capacity of 380). It is assumed that there would minimal change to the number of staff and visitors as a result of the proposal.

The separation of accommodation blocks into two precincts would be maintained. The northern precinct would operate under medium security and the southern precinct under minimum security.

The repurposing of accommodation to include medium security accommodation would generate an additional 18 staff during peak periods. These staff would consist of custodial officers, program staff and administration staff.

The capacity of visits would remain unchanged.

Site access

There would be no change to the OMMPCC site access as described in section 3.2.2.



5.2 Construction of the proposal

5.2.1 Staging

The OMMPCC would reduce its operational capacity to a minimum of 150 inmates during construction of the proposal. A staged approach to construction is proposed to enable this reduction and minimise any potential impacts on operation of the centre.

Construction and demolition works are proposed to be undertaken in stages. Early works and Stage 1 works have been considered as part of the Early Works REF (refer to section 1.5.3. Construction staging is shown in Appendix C and described below.

Stage 2A

new gatehouse construction

construction of three minimum security 48-bed accommodation buildings in the southern precinct

construction of five new segregation cells

commissioning the new accommodation units, segregation unit and gatehouse

construction of new main switch board and substation

Stage 2B

construction of new perimeter security fencing between the new gatehouse and the existing perimeter fence

decommissioning and demolition of a redundant substation, switchboard and associated equipment

Stage 3A

construction of temporary security fencing and cut into existing perimeter fence

demolition of four existing accommodation buildings (A-D)

construction of new reception building

construction of two medium security 48-bed accommodation buildings in the northern precinct

commissioning of the new accommodation unit

commissioning of the new reception

Stage 3B

removal of redundant temporary security fencing

5.2.2 Temporary facilities

During construction and demolition works, temporary facilities would be required on-site. On-site temporary facilities would include a main project office, construction compounds, site sheds and amenities.

A temporary car park would be established to accommodate the temporary loss of car parking spacing during the works. This would be located north east of the existing Honour House.



5.2.3 Construction resources

Workforce

The construction workforce would consist of a maximum of 20 personnel during the construction and demolition period.

Equipment

Equipment likely to be required for the construction work would include:

crane

excavators

bulldozers

franna

bobcats

rollers

Manitou

scissor lifts

grader

concrete trucks and pumps

hand tools

loader

Cut/fill level/volume

The OMMPCC proposal would require approximately 5,000m3 of imported fill.

5.2.4 Construction compound, access and vehicle movements

Construction site amenities and compound

A main project office would be located north of the OMMPCC, north east of Honour House.

Site sheds and amenities would be established east of building M and N for the duration of Early Works as shown in Appendix C. Prior to commencement of Stage 2 and 3, site offices and amenities would be established near the construction entrance south of the DCC site (minimum security precinct).

Fencing and security

The integrity and functionality of OMMPCC’s perimeter, duress and electronic security systems would be maintained to a minimum security level throughout construction.

A new fence would be erected from the existing fence across the clinic and around between the minimum security accommodation blocks and the programs buildings. Separation between northern and southern precinct would be maintained.

Construction site access

Construction access to the OMMPCC site would be via the JMCC site access road off The Northern Road.

Access to the site throughout construction by all non-correctional personnel would follow all relevant legislation and CSNSW policies and procedures in place for the centre, which would include mandatory CRI (Criminal Record Inquiry) checks and approvals providing clearance for personnel to access the existing secure facility.

Workforce parking

Workforce car parking would be provided within a temporary car park adjacent to the construction compound, north east of the existing OMMPCC car park.



Vehicle movements

Construction traffic movements would primarily be associated with construction personnel vehicles and the transportation of construction machinery, building materials and equipment to and from the proposal site. Initial estimates for construction vehicle movements to the OMMPCC site would involve a peak daily maximum of up to 50 (two way) heavy vehicle movements spread throughout the day and up to 40 (two way) light vehicle movements associated with construction personnel during the morning and evening peak periods.

5.2.5 Construction timing and work hours

Construction timing

Construction of the proposal would commence in September 2018 and be completed by August 2020.

Construction hours

Construction would occur within the following hours Mondays to Fridays between 7 am and 6 pm

Saturdays between 7 am and 3 pm.

Sunday and Public Holidays: No works

5.2.6 Construction environmental management

The approach to environmental management during construction, and required management measures, would be defined by the construction environmental management plan (CEMP), which would be prepared by the construction contractor. Further information is provided in section 8.

Car Park andNew GatehouseWorks

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Indicative Bushfire APZ

Department of JusticeJohn Morony Correctional ComplexReview of Environmental FactorsData Disclaimer


Site location




6. Community and stakeholderconsultation6.1 Approach to consultation

The approach to consultation was guided by DoJ’s consultation plan for each site which principally involved engagement with Penrith City Council and the community via the existing Community Consultative Committee.

As discussed in section 2.2.1, consultation is required with NSW Rural Fire Services as the proposal is located within a bushfire prone area as defined in the Penrith Bushfire Prone Land Map (Penrith City Council, 2014).

6.2 Consultation activities and outcomes

Two meetings were held with relevant officers of Penrith Council on 27 June 2018 and 17 August 2018.

The first meeting was held with the Council’s Mayor and General Manager to raise awareness of the proposal and to broadly discuss the need for the expanded facility.

A second meeting was held with the Council’s Social Outcomes Manager to seek Council’s inputs on issues such as the community profile, key values and issues held by ratepayers and to discuss the potential social impacts and benefits of the proposal (refer section 7.6).

6.3 Ongoing consultation

DoJ will provide construction information and updates through the existing community Consultative Committee and for other stakeholders on an ad hoc basis.

The design and construction process will require a moderate level of consultation and engagement with relevant utility providers and others regarding specific details of existing capacity and upgrade requirements for utilities and services, if required.

A complaints management procedure would be established by the construction contractors as required by the CEMP. Complaints would be managed in accordance with DoJ’s Managing Complaints and Feedback Policy.

The procedure would define community contact arrangements during construction, and the process for recording and responding to complaints received.

DoJ’s standard service level agreement for acknowledging complaints is three business days from receipt, and resolution within 21 business days, if the complainant has requested a response and provided accurate contact details.



7. Environmental assessment – Dillwynia Correctional Centre 7.1 Traffic, parking and access

This section provides a summary of the results of the traffic, transport and access assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix D. The methodology for the assessment is detailed in Appendix D.

7.1.1 Existing environment

The existing traffic conditions around the DCC site are discussed in terms of road network characteristics, performance and accessibility.

Road network characteristics

The Northern Road

The Northern Road functions as an arterial state road, running in an approximately southwest - northeast direction. It connects Richmond Road in the north and to Great Western Highway in the south. It provides access to the DCC site via a dedicated access road to JMCC.

In the vicinity of the proposal site, the road has one travel lane in each direction with a divided carriageway. A turning lane is provided on approaches to JMCC from both directions. The sign posted speed limit is 80 kilometres per hour.

Richmond Road

Richmond Road functions as an arterial state road, located one kilometre north of JMCC, providing northwest to southeast access from Blacktown Road in the north to Blacktown township in the south. Richmond Road intersects The Northern Road at a roundabout to the north of JMCC.

Richmond Road is characterised by one traffic lane in each direction with a divided carriageway. The sign posted speed limit is 80 kilometres per hour.

Blacktown Road

Blacktown Road functions as an arterial state road, connecting Richmond township in the north to Richmond Road and Northern Road to the south. It provides access to JMCC through The Northern Road via the JMCC access road.

Blacktown Road is characterised by one traffic lane in each direction with a divided carriageway. The sign posted speed limit is 80 kilometres per hour.

The surrounding road network is shown in Figure 7-1.



Figure 7-1 Surrounding road network

Source: Transport for NSW maps (Modified by GHD)

Road network performance

Road network performance was assessed by estimating the traffic volumes over a two day period at the following intersection as illustrated in Figure 7-2:

The Northern Road/JMCC site access road

Traffic volumes were measured during the following periods:

Weekday morning peak (3 hours): 6.30 am to 9.30 am (Thursday 14 June 2018)

Weekday evening peak (3 hours): 4 pm to 7 pm (Thursday 14 June 2018)

Saturday peak (3 hours): 11 am to 2 pm (Saturday 16 June 2018).



Figure 7-2 Intersection traffic survey location

Source: Google maps 2018 (Modified by GHD)

The traffic surveys indicated the following peak hour periods along The Northern Road:

Weekday AM peak hour: 7.15 am to 8.15 am

Weekday PM peak hour: 4 pm to 5 pm

Saturday peak hour: 11.15 am to 12.15 pm.

Traffic volumes during peak hour were compared against typical nominal average annual daily traffic volumes for various classes of roads developed by Roads and Maritime Services (Roads and Maritime).

The survey results indicated that the peak hour traffic volumes generally fall within the criteria for the relevant classification. Full results of the survey are provided in Appendix D and a summary of the results is given below:

The Northern Road northbound traffic volumes are 688 vehicles per hour at morning weekday peak hour, 564 vehicles per hour at evening peak hour and 579 vehicles per hour during Saturday peak hour

The Northern Road southbound traffic volumes are 671 vehicles per hour at morning peak hour, 640 vehicles per hour at evening peak hour and 623 vehicles per hour during Saturday peak hour

Recorded traffic volumes on The Northern Road is well within the Roads and Maritime criteria for arterial roads of 1,500-5,600 vehicles per hour at peak hour.

Heavy vehicles percentages on The Northern Road are 10% of total traffic volume at morning peak hour, 10% at evening peak hour and 5% during Saturday peak hour.



Traffic characteristics and intersection performance

The performance of the existing road network is largely dependent on the operating performance of key intersections, which are critical capacity control points on the road network. SIDRA intersection modelling software was used to assess the proposed peak hour operating performance of intersections on the surrounding road network.

The criteria in Table 7-1 were used to evaluate the operational performance of intersections (RTA, 2002).

Table 7-1 Level of service criteria for intersections

Level of Service

Average delay (seconds per vehicle)

Traffic signals, roundabouts Give way and stop signs

A < 14 Good operation Good operation B 15 to 28 Good with acceptable delays &

spare capacity Acceptable delays & spare capacity

C 29 to 42 Satisfactory Satisfactory, but accident study required

D 43 to 56 Operating near capacity Near capacity & accident study required

E 57 to 70 At capacity; at signals, incidents will cause excessive delays Roundabouts require other control modes

At capacity, requires other control mode

F > 70 Over Capacity Unstable operation

Over Capacity Unstable operation

Source: Guide to Traffic Generating Developments (RTA, 2002)

Base 2018 traffic models were developed using the morning and evening weekday and weekend peak hour surveyed data results. Existing traffic flows were analysed using SIDRA7 to obtain the current traffic flow conditions at the intersection of The Northern Road/JMCC access road.

The results of SIDRA modelling are shown in Table 7-2.

Table 7-2 Existing intersection performance

Site Peak scenario Average Delay (s)

LoS Control Type Degree of Saturation

The Northern Road / JMCC site access road

Weekday AM 16.5 B Giveway/Yield 0.021

Weekday PM 12.5 A Giveway/Yield 0.005

Weekend 12.0 A Giveway/Yield 0.063

Notes: • The average delay for priority-controlled intersections is selected from the movement on the approach with the

highest average delay. • The level of service for priority-controlled intersections is based on the highest average delay per vehicle for the

most critical movement. • The degree of saturation is defined as the ratio of the arrival flow (demand) to the capacity of each approach. • The average delay is given in seconds per vehicle.

The traffic analysis indicated that the analysed intersection currently has an acceptable Level of Service (i.e. Level of Service D or better) with spare capacity in both the weekday morning and evening peak periods as well as during the weekend period.



Site access

The main access to the DCC site is via the JMCC site access road, off The Northern Road. The boom gate and external perimeter security are maintained by a contracted security company and are staffed on Saturday, Sunday, Monday and public holidays between 6 am and 6 pm.

According to the traffic analysis utilising SIDRA, the Level of Service of this intersection is at good operation (Level B during morning peak period and Level A during evening peak period and peak hour weekends).

Parking

There are seven areas for visitors and staff parking throughout the JMCC as shown in Figure 7-3.

Figure 7-3 Existing parking locations

Source: Google Maps (Modified by GHD)

A breakdown of the existing parking provision is given in Table 7-3 below.

Table 7-3 On-site parking provision

Area Type Provision DCC

1 Visitor Designated parking bays: 94 Informal parking: Peak occupancy 1 vehicle

2 Staff Designated parking bays: 38 OMMPCC



Area Type Provision 3 Visitor Designated parking bays: 108 4 Staff Designated parking bays: 47

Other 5 Brookfield Global

Integrated Solutions Designated parking bays: 67

6 Car park Designated parking bays: 12


In total, there are 530 designated parking spaces within the JMCC. Parking utilisation surveys were undertaken on Thursday 14 June 2018 and Saturday 16 June 2018.

The surveys indicated that just over half of the available DCC’s visitor parking capacity is reached and the available staff parking is nearing capacity during the weekdays. Parking is generally available during weekend periods, with 44 percentage occupancy in the visitors area and 76 percentage occupancy in the staff area.

Overall, weekend parking utilisation was lower in comparison to weekdays. Parking utilisation of staff is consistently higher than that of the visitors.

Crash data review

Crash data for roads within the vicinity of JMCC was obtained from Transport for NSW Centre for Road Safety website. There is no evidence of recorded crashes in the proximity of the site within a five-year period (2013-2017).

Public and active transport

Public transport options considered in the assessment include bus and train and active transport including bicycle riding and walking.

Bus stops are located adjacent to the northern boundary of JMCC along The Northern Road at its intersection with the JMCC access road (approximately 400 metres from the site). Bus services covering the proposal area include routes 673 and 674. Route maps and an indicative timetable are included in section 2.8.1 of Appendix D.

The nearest train station to JMCC is Windsor Station, located about six kilometres from the site. Whilst this distance is further than the generally acceptable walking distance of two kilometres, the station is connected to JMCC by bus.

On road cycleways are available along The Northern Road within the road shoulders, as well as on Richmond Road and Blacktown Road. However, the on-road environment has been classified as a high difficulty cycling path.

A footpath is provided along the western side of The Northern Road, at 100 metres distance from the Richmond Road/The Northern Road intersection. Pedestrian footpaths are available along the eastern and western sides of Richmond Road approaching the Richmond Road/The Northern Road intersection. Footpaths are located along both sides of Blacktown Road.

7.1.2 Construction impacts

Traffic generation and impacts on the road network

Construction traffic movements would primarily be associated with the transportation of construction machinery, building materials, staff and equipment to and from the site.

Initial estimates for construction vehicle movements to the DCC site would involve a peak daily maximum of up to 47 (two way) heavy vehicle movements spread throughout the day and up to



500 (two way) light vehicle movements associated with construction personnel during the morning and evening peak periods to and from the site. A breakdown of the expected construction traffic movements is provided in Table 7-4.

Table 7-4 DCC estimation of construction vehicle movement

Vehicle type Activity Daily vehicle numbers

Movements per hour

Peak workforce

Heavy vehicles Concrete and semi-trailer trucks 47 14

Light vehicles Cars and utilities ** 500 250* (*) assume 250 staff arrival or depart in the one peak hour and all staff travel by individual private transport

(**) Associated with construction staff arrival and departure

It is anticipated that the majority of traffic movements associated with the proposal would be undertaken during standard construction hours. However, there may be a need for limited vehicle movements outside of standard construction hours for the delivery of any oversized equipment required to be transported during hours/times as specified by Roads and Maritime and NSW Police. These deliveries would be undertaken in accordance with the requirements of relevant authorities.

SIDRA modelling was undertaken to assess the performance of The Northern Road/JMCC site access road intersection during the construction stage at weekday morning, weekday evening and weekend peak hours and shown in Table 7-5 below. The assessment was based on the following assumptions:

Construction activities at DCC and OMMPCC taking place concurrently.

Heavy vehicles associated with construction would generate left in and right out movements. Those arriving from the northeast direction would turn left into JMCC site access road and those arriving from the southwest direction would utilise the roundabout at the intersection of The Northern Road and Richmond Road.

Light vehicles would arrive and depart from the DCC site following the same pattern as the surveyed traffic distribution.

Table 7-5 Intersection performance during construction

Site Peak scenario

Average Delay (s)

LoS Control Type

Degree of Saturation


Weekday AM

23.5 B Giveway / Yield

0.030

Weekday PM

81.6 F Giveway / Yield

0.990

Weekend 15.8 B Giveway / Yield

0.144






The SIDRA modelling results shown in Table 7-5 indicate that The Northern Road/JMCC site access road intersection is expected to have an acceptable Level of Service (i.e. Level of Service D or better) during the construction traffic scenario with spare capacity in both the weekday morning and weekend peak periods.

During the weekday evening peak period, the intersection is operating with spare capacity, except for the right hand turning movement onto The Northern Road. This reduced level of service is as a result of the increased delays of vehicles exiting JMCC site access road, potentially arising from staff ending their shifts during this time.

Construction workforce parking and transport

The parking for the construction workforce of the DCC site is shown in Figure 7-4.

Construction personnel car parking would be adjacent to the existing DCC car park in the designated area clear of vegetation (Area A), with capacity for approximately 100 cars. This area would be also utilised for the proposed new car park. Overflow parking may also be utilised where required in an area clear of vegetation to the north of JMCC main entrance (Area B).

Construction parking is not anticipated to result in the loss of any of the parking spaces for visitors or staff to the DCC.

Figure 7-4 Potential workforce parking locations

Source: SIX Maps (Modified by GHD)

Pedestrian movements and access

Construction activities are not anticipated to impact on pedestrian access to and from the JMCC.

There is a potential impact on pedestrians and cyclists on the east side of The Northern Road due to vehicle entry and exit via the JMCC main gate. There is potential impact on the movement of pedestrians and cyclists within the JMCC. These impacts would be minimised through the implementation of mitigation measures listed in section 7.1.4.



Public transport

Construction activities would not impact on public transport operations.

No impacts are anticipated on access to and from the bus stops on The Northern Road.

7.1.3 Operational impacts


Operational impacts of the proposal would be characterised by an increase in the number of staff and visitors coming to the DCC site. Traffic assessment (Appendix D) was based on the following assumptions:

The existing shift patterns for DCC would remain unchanged following completion of the proposal.

It is assumed this peak increase in staff would coincide with the largest existing shift demand and that all staff travel individually by private transport (car).

The number of visitors to DCC would double, and each visit would generate one vehicle movement.

Additional staff would arrive and depart at the JMCC individually by private vehicles

Traffic distributions in relation to arrivals and departures are assumed to be consistent with the traffic results undertaken as part of this REF.

It is estimated that an additional 48 staff would be required at DCC during peak periods.

The increase in visitors associated with the expansion of DCC is estimated to be 46. Assuming a worst case scenario where all visitors arrive at the same time, peak weekend period would consist of additional 46 inbound and 46 outbound vehicle movements utilising the JMCC access road onto The Northern Road occurring within the weekend peak hour.

SIDRA modelling was undertaken at The Northern Road/JMCC site access road intersection at weekday morning, weekday evening and weekend peak hours and the results are shown in Table 7-6.

Table 7-6 Intersection performance post-development

Site Peak scenario

Average Delay (s)



Weekday AM


0.027

Weekday PM

12.8 A Giveway / Yield

0.364

Weekend 12.6 A Giveway / Yield

0.017






Table 7-6 indicates that The Northern Road/JMCC site access road intersection is expected to operate with an acceptable Level of Service (i.e. Level of Service D or better) with spare capacity in both the weekend, weekday morning and evening peak periods post development.

Post-development parking

The existing parking spaces for both staff and visitors at DCC car parks are a total of 132, located within Area 1 and Area 2 shown in Figure 7-3 and Table 7-3.

Parking provisions analysis provided in Section 4.1.2 of Appendix D estimated that parking demand post-development would be of a total of 221, incorporating additional demand due to increase in staff and visitors numbers of 112 spaces and a 20% buffer.

The proposed car park expansion would increase the current parking spaces to a total of 230. Therefore parking provisions for the post-development demand are considered adequate for DCC.

Post development boom gate operation

A security boom gate is located approximately 140 metres southeast of The Northern Road / JMCC site access road and is typically operational on Saturdays, Sundays and Mondays. No evidence has been provided relating to the security procedure and boom gate operations, however the traffic intersection survey did not identify vehicle queues at the boom gate impacting The Northern Road/JMCC site access road intersection operation.

Based upon the anticipated additional inbound traffic volumes, it is not anticipated the additional traffic flow would result in variation to the current boom gate/security procedure operation and potential vehicles queue, subject to the security procedures are carried out within nominally one minute periods.

7.1.4 Mitigation measures

Construction

A Construction Traffic Management Plan (CTMP) be prepared for DCC prior to the commencement of works with site induction for construction personnel being undertaken to outline the requirements of the CTMP. It would detail the management measures to be implemented to minimise the potential for impacts on the operation of the surrounding road and transport environment. It would include the following information and management measures as a minimum:

– A Traffic Control Plan (TCP) would be developed in accordance with RMS Traffic Control at Works Sites (RTA, 2010)

– Hours of operation, heavy vehicle volumes (numbers) and routes, loading/unloading areas and site access and security arrangements, temporary warning, guidance and information signage, and appropriate traffic control devices.

– Vehicles would be permitted to travel past the work site with traffic signage in accordance with the TCP.

– Construction vehicle movements would be minimised during the AM and PM peak hour and during the middle of the day on the weekend, when higher traffic volumes occur within the road network.

– Construction vehicles are to arrive JMCC from the northeast from The Northern Road.

– Construction vehicles are to exit JMCC to the left to avoid delays at The Northern Road/JMCC site access road intersection, particularly during the weekday evening peak hour.



– Site access is be restricted to authorised personnel only and existing employees on site.

– Construction vehicles would be parked within areas designated for construction parking only.

– Pedestrian access to and around construction areas would be maintained at all times.

– Specific road hazards would be identified, including but not limited to wet weather, pedestrian and bicycle riders, general traffic and bus infrastructure.

– The timing of deliveries accessing JMCC would be programmed to ensure there is sufficient space within the complex to accommodate deliveries, and there is minimal potential for impacts to operation of all the facilities in JMCC.

– Designated queuing and idling areas would be determined near JMCC to minimise disruption to the local community.

– Adequate sight lines would be provided to allow for safe entry and exit from the site.

– All roads would be kept clean and free of dust and mud at all times. Where material is tracked onto sealed roads at any time, it would be removed immediately so that road pavements are kept safe and trafficable.

– Any roads, kerbs, gutters and footpaths damaged as a result of construction would be restored to their pre-construction condition.

– All traffic would comply with all applicable traffic laws and regulations including speed limits.

– All roads and accesses would be rehabilitated post construction to a standard equivalent to, or better than, the preconstruction condition.

– Community notification on any proposed changes to road and pedestrian network.

Operation

Monitoring should be undertaken of the overall parking area to ensure suitable allocation has been provided for both staff and visitors.

Consideration would be given to the development of a Transport Access Guide (TAG) summarising alternate transport options for staff and visitors to access the JMCC.

7.2 Noise and vibration

This section provides a summary of the results of the noise and vibration assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix E. The methodology for the assessment is described in Section 1.3 of Appendix E.


Sensitive receivers

Noise and vibration sensitive receivers include residences, medical centres, educational institutes, hospitals, places of worship, recreational areas and commercial/industrial premises.

The nearest sensitive noise and vibration receivers are located to the north of the Northern Road within land zoned RU4 (Primary Production Small Lots).

Two noise catchment areas have been identified within this zone:

Noise Catchment Area 1 (NCA1) - encompassing residences within 100 metres of The Northern Road, Richmond Road and Blacktown Road within 800 metres radius of the site. There are 32 receivers within NCA1.



Noise Catchment Area 2 (NCA2) - encompassing all other residences within 800 metres from the site. There are 63 receivers within NCA2.

In addition to these, there are four commercial properties within 800 metres radius of the site.

Existing noise environment

Average background and ambient noise levels were determined by conducting noise monitoring over a period of nine days between 24 July and 1 August 2018 at two locations. The locations of the noise catchment areas and monitoring points are shown in Figure 7-5.

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!( Noise Monitoring Location

Existing buildings on siteNoise Catchment Area 1OMMPCC siteDCC expansion areaCarpark ExtensionStudy Area

Sensitive receiversCommercialResidential - NCA1Residential - NCA2

Land zoningB1, Neighbourhood CentreDM, E1, National Parks and Nature ReservesE2, Environmental ConservationR2, Low Density ResidentialR3, Medium Density ResidentialR5, Large Lot ResidentialRE1, Public RecreationRU1, Primary ProductionRU4, Rural Small HoldingsSP1, Special ActivitiesSP2, Infrastructure

Project site, noise monitoring locations,noise catchment areas and sensitive receivers

Data Disclaimer

General Topographic data: NSW LPI 2012. Aerial Imagery:Sixmaps, LPI 2018

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CARRINGTONROAD

R004

R008R007 R011

R014

R020

R033R035

R042

R009

R010 R012R015

R017R025

R016R019

R018

R021R023

R024

R027R028 R036 R046

R041R040R045 R049

R052

R067R065

R064

R059

R070

R056R061 R068

R063R072

R071R076

R080

R077

R006

R002

R001 R034

R030

R043

R044 R047R048

R038R039

R053R058R057

R060

R050R005

R032R031

R078

R075R074R066

R029

R026

R022

12

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GEOR

GEST

REET

R014

R020

R033R035

R042

R037R051

R054

R055

R069

R021R023R024

R027R028 R036

R046

R041 R040R045 R049

R052

R067R065

R064

R059

R070

R056R061 R068

R063R072

R071R076

R080

R082R077

R084

R088R089

R091

R090R085

R092

R086R083

R081

R087R094R095

R093R096

R038R039

R057

R060

R078

R079R073

R075R074R066

R062

R029

R026

R097

R098

12



A summary of the measured noise levels at monitoring locations M1 and M2 is shown in Table 7-7

Table 7-7 Average background and ambient noise levels

Location of noise logger Rating background level (dB(A)), 90th percentile LA90(15min)

Ambient noise levels (dB(A)), LAeq(period)

Road traffic noise level LAeq(period)

Day Evening

Night Day Evening Night Day Night

M1 – Front yard of 77 The Northern Road (35 metres from road edge)

47 42 32 58 54 54 57 53

M2 – 122 Bennet Road 38 36 30 52 51 47 N/A N/A

7.2.2 Noise and vibration criteria

Noise and vibration compliance criteria for the proposal were established in accordance with the relevant guidelines. Information on how the criteria were derived is provided in sections 3.1 and 3.2 of Appendix E. The following section provides a summary of these criteria.

Construction noise criteria

A summary of construction noise management levels specific for the proposal is shown in Table 7-8.

Table 7-8 Construction noise management levels

Receiver type

Construction noise management levels, LAeq(15 min)

Recommended standard hours

Outside recommended standard hours

Noise affected

Highly noise affected

Day (OOHW1)

Evening (OOHW2)

Night (OOHW3)

Residential receivers at NCA1 57 75 52 47 37


Commercial 70 (external) Notes: 1) OOHW1 refers to the outside of standard hours work during the day period (Saturday 1 pm – 6 pm, Sundays and public holidays 8 am – 6 pm) 2) OOHW2 refers to the out of standard hours work during the evening period (6 pm to 10 pm) 3) OOHW3 refers to the out of standard hours work during the night period (10 pm to 7 am Monday to Friday, 10 pm to 8 am Saturdays, Sundays and public holidays)

Construction vibration criteria

Construction vibration criteria were established for human comfort as well as for structural damage. The degrees of perception for humans are suggested by the vibration level categories given in BS 5228.2 – 2009, Code of Practice for noise and vibration on construction and open sites – Part 2: Vibration, as follows:

Vibration level 0.14 mm/s - vibration might be just perceptible in the most sensitive situations for most vibration frequencies associated with construction

Vibration level 0.3 mm/s – vibration might just be perceptible in residential environments



Vibration level 1.0 mm/s – it is likely that vibration at this level in residential environments would cause complaints, but can be tolerated if prior warning and explanation has been given to residents

Vibration level 10 mm/s - vibration is likely to be intolerable for any more than a very brief exposure.

Two guidelines were applied to establish vibration criteria for the proposal: DIN 4150-3 Structural vibration – effects of vibration on structures (1999) and BS 7385-2:1993 - Evaluation and measurement for vibration in buildings: Guide to damage levels from groundborne vibration. The guideline values are shown in Table 7-9 and Table 7-10.

Table 7-9 Guideline values for short term vibration on structures (DIN4150-3)

Line Type of structure

Guideline values for velocity, (mm/s) 1 Hz to 10 Hz

10 Hz to 50 Hz

50 Hz to 100 Hz1

1 Buildings used for commercial purposes, industrial buildings, and buildings of similar design 20 20 to 40 40 to 50

2 Dwellings and buildings of similar design and/or occupancy 5 5 to 15 15 to 20

3

Structures that, because of their particular sensitivity to vibration, cannot be classified under lines 1 and 2 and are of great intrinsic value (for example listed buildings under preservation order)

3 3 to 8 8 to 10

Table 7-10 Guideline values –for transient vibration resulting in minimal risk of cosmetic damage (BS 7385-2)

Type of building Peak particle velocity in frequency range of predominant pulse

4 Hz to 15 Hz 15 Hz and above Reinforced or framed structures. Industrial and heavy commercial buildings

50 mm/s at 4 Hz and above 50 mm/s at 4 Hz and above

Unreinforced or light framed structures. Residential or light commercial type buildings

15 mm/s at 4 Hz increasing to 20 mm/s at 15 Hz

20 mm/s at 15 Hz increasing to 50 mm/s at 40 Hz and above.

Vibration buffer distances were sourced from the Construction Noise and Vibration Guidelines (Roads and Maritime, 2016) for cosmetic damage (standard structures) and human response. Safe working distances for various types of receivers from machinery that would be used in the proposal are shown in Table 7-11.



Table 7-11 Minimum safe working distances (Roads and Maritime, 2016)

Equipment Approximate size/weight

Minimum working distances

Human Response (OE&H Vibration Guideline)

Minimum Distance – Cosmetic Damage (BS 7385)

Vibratory roller 4-6 tonne 40 m 12 m

Vibratory roller 7-13 tonne 100 15 m


Small hydraulic hammer 300 kg (5 - 12 tonne) 7 m 2 m

Medium hydraulic hammer 900 kg (12 – 18 tonne) 23 m 7 m

Large hydraulic hammer 1600 kg (18-34 tonne) 73 m 22 m

Piling rig 12 tonne down force 50 m 15 m

Operational noise criteria

The Noise Policy for Industry (EPA, 2017) was used to establish operational noise criteria for the proposal. Operational noise levels are distinguished between intrusiveness noise and amenity noise. The intrusiveness noise level refers to the relative audibility of operational noise compared to the background level at residential receivers. The amenity noise level refers to the total level of extraneous noise for all receiver types. The intrusiveness noise level is assessed over a 15 minute period, while the amenity noise level is assessed over the day, evening or night time period. The lower of the two is set as the project noise trigger level, which was used to assess the impact of the proposal. The operational noise trigger levels for residential and non-residential receivers are shown in Table 7-12 and Table 7-13 respectively.

Table 7-12 Operational noise trigger levels for residential receivers

Noise trigger levels LAeq(15min) Residential Receivers2

Day1 Evening1 Night1

Intrusiveness noise level for NCA1 (based off M1 location) 52 47 37

Intrusiveness noise level for NCA2 (based off M2 location) 43 41 35 Project amenity noise level (rural residential – NCA1 & NCA 2) 48 43 38

Project noise trigger levels (NCA1) 48 43 37

Project noise trigger levels (NCA2) 43 41 35 Notes: 1) The NPI defines Day as 7 am to 6 pm Monday to Friday and 8 am to 1 pm Sunday and Public Holidays, Evening 6 pm to 10 pm and Night as the remaining periods.

2) Noise from the site is to be measured at the most affected point within the residential boundary.

Table 7-13 Noise trigger levels – non-residential receivers

Receiver Non-residential receivers Time of day LAeq, dBA

Commercial premises When in use 65 (external)



Road traffic noise

The Road Noise Policy (DECCW 2011) provides traffic noise criteria for sensitive receivers in the vicinity of existing roads (Table 7-14). The criteria are applied to traffic on public roads to identify potential road traffic impacts and the requirement for reasonable and feasible mitigation measures.

If road traffic noise increases during operation and construction work is within 2 dBA of current levels then the objectives of the Road Noise Policy (DECCW 2011) are met and no specific mitigation measures are required.

Table 7-14 Road traffic noise criteria

Type of development Day

7 am to 10 pm Night

10 pm to 7 am

Existing residence affected by additional traffic on existing arterial roads generated by land use developments

60 LAeq(15 hr) 55 LAeq(9 hr)


Noise

Construction would require the use of heavy machinery, which would generate noise and vibration levels at nearby receivers. At any location, the potential impacts may vary greatly depending on factors such as the proximity of sensitive receivers, the duration of works, the magnitude of the noise levels, the time at which the construction is undertaken, and the character of the noise or vibration emissions.

For the purpose of the noise assessment, construction works are summarised into sixteen construction scenarios over three stages and are described in Table 7-15. It should be noted that the first three construction scenarios (CS01, CS02 and CS03) have been considered as part of the Early Works REF (refer to section 1.5.3) and do not form part of this assessment.

Table 7-15 Construction scenarios for DCC proposal

Stage Construction Scenario (CS)

Description of works

Plant and equipment to be used

Maximum predicted activity sound power level is predicted

Stage 1

CS011 Site Establishment Early works

CS021 Relocate SHINE For Kids

Early works

CS03 Services Diversions Early works

CS04 Bulk Earthworks

bulldozer, compactor, excavator, grader, roller, trucks and a street sweeper.

120 dBA

Stage 2

CS05 Building Platforms & Piling

compactor, excavator, grader, piling (impact sheet), truck (water cart), welder and street sweeper.

125 dBA







CS06 Inground Services

backhoe, concrete agitator truck, excavator, hand tools (electric), plate compactor and street sweeper.

112 dBA.

CS07 Fibre reinforced plastic works

concrete agitator truck, concrete pencil vibrator, concrete pump truck, concrete saw (5/15 mins), hand tools (electric), street sweeper and manitou.

118 dBA

CS08 Precast Erection

crane (mobile), hand tools (electric), street sweeper, and manitou.

110 dBA

CS09 Structural Steel


110 dBA

CS10 Roofing & External Cladding


110 dBA

CS11 Fitout & Services

Plant and equipment to be used include hand tools (electric), street sweeper, manitou, and elevating work platforms.

107 dBA.

CS12 Commissioning

cherry picker, concrete agitator truck, concrete pencil vibrator, concrete pump truck, crane (mobile), excavator, hand tools (electric), and street sweeper.

113 dBA

CS13 Perimeter Fencing

backhoe, compactor, concrete agitator truck, concrete pencil vibrator, crane (mobile), excavator, hand tools (electric),

115 dBA.







plate compactor, and street sweeper.

CS14 Services Infrastructure

backhoe, compactor, concrete agitator truck, concrete pencil vibrator, crane (mobile), excavator, hand tools (electric), plate compactor, and street sweeper.

115 dBA

CS15 Landscape (Hard & Soft)

backhoe, compactor, concrete agitator truck, concrete pencil vibrator, crane (mobile), excavator, hand tools (electric), plate compactor, street sweeper and Manitou.

115 dBA

Stage 3

CS16 Interface Works (Removal of Existing Fence)

backhoe, compactor, concrete agitator truck, concrete pencil vibrator, crane (mobile), excavator, grader, hand tools (electric), plate compactor, truck (> 20 tonne), vehicle (4WD), and street sweeper.

116 dBA.

The majority of the works would be undertaken during standard construction hours. In addition, construction works are also proposed during out-of-standard hours (Saturday: 7 am to 8 am and 1 pm to 5 pm).

Noise levels have been predicted using computer modelling software based on the above construction scenarios and assumed list of likely plant and equipment to be used. The predicted noise levels are generally considered conservative as the construction noise model predicts the worst-case 15 minute scenario and these levels are highly unlikely to represent the actual noise emission experienced by the community throughout the entire construction period (if at all).

A summary of the number of exceedances (NoE) of the relevant noise management levels for each construction scenario (CS) is provided in Table 7-16, along with the relevant noise management level (NML) and highest noise level (HNL) at a receiver. The predicted noise level is a maximum noise level from the shortest distance between the receiver and the closest construction activity.



Table 7-16 Summary of construction noise predictions

Receiver

CS04

CS05

CS06

CS07

CS08

CS09

CS10

CS11

CS12

CS13

CS14

CS15

CS16

Standard construction hours

NCA1 (NML 57 dBA)

NoE1 0 13 0 0 0 0 0 0 0 0 0 0 0

HNL2 56 61 48 54 46 46 46 43 43 49 51 51 51

HE3 0 4 0 0 0 0 0 0 0 0 0 0 0

WAR4 -

R10

- - - - - - - - - - -

NCA2 (NML 48 dBA)

NoE1

14 53 0 7 0 0 0 0 0 0 1 1 1

HNL2

54 59 46 52 44 44 44 41 41 47 49 49 49

HE3 6 11 0 4 0 0 0 0 0 0 1 1 1

WAR4

R50

R50

- R50

- - - - - - R50

R50

R50

Commercial (NML 70 dBA)l

NoE

0 0 0 0 0 0 0 0 0 0 0 0 0

HNL 51 56 43 49 41 41 41 38 38 44 46 46 46

Outside of standard hours - Saturdays

NCA1 (NML 52 dBA)

NoE1

13 20 0 6 0 0 0 0 0 0 0 0 0

HNL2

56 61 48 54 46 46 46 43 43 49 51 51 51

HE3 4 9 0 2 0 0 0 0 0 0 0 0 0

WAR4

R10

R10

- R10

- - - - - - - - -

NCA2 (NML 43 dBA)

NoE1

53 63 6 35 1 1 1 0 0 7 14 14 14

HNL2

54 59 46 52 44 44 44 41 41 47 49 49 49

HE3 11 16 3 9 1 1 1 0 0 4 5 5 5



Receiver

CS04

CS05

CS06

CS07

CS08

CS09

CS10

CS11

CS12

CS13

CS14

CS15

CS16

WAR4

R50

R50

R50

R50

R50

R50

R50

- - R50

R50

R50

R50

Notes:

1) NoE refers to Number of Exceedances

2) HNL refers to Highest Noise Level

Noise impacts during recommended standard working hours

The results of modelling indicate the following:

The construction noise management level for receivers within NCA1 is predicted to be exceeded during one of the 16 construction scenarios during standard working hours.

The construction noise management level for receivers within NCA2 is predicted to be exceeded during six of the 16 construction scenarios.

Construction scenario 5 (building platforms and piling) is predicted to result in the highest number of exceedances, followed by construction scenario 4 and construction scenario 7, respectively.

The predicted construction noise levels at all receivers within the study area are presented in Appendix C of Appendix E. A noise emission map for construction scenario 5 is presented in Figure 4 of Appendix E.

No receiver would be ‘highly affected’ by noise (defined as receiving noise above 75 dBA) for all construction scenarios.

Out of hours work

The results of modelling indicate the following:

The construction noise management level for receivers within NCA1 is predicted to be exceeded during three of the 16 construction scenarios.

The construction noise management level for receivers within NCA1 is predicted to be exceeded during 11 of the 16 construction scenarios.

A total of 248 residential receivers would be affected by out of hours (Saturday) construction noise.

No exceedances of the noise management levels are predicted at any commercial receivers both during standard and out of standard construction hours.

The measures listed in section 7.2 would be implemented to minimise the potential noise impacts identified.

Construction traffic impacts

In accordance with the Road Noise Policy (DECCW, 2011), construction traffic noise is considered to be acceptable when it is within two dBA of the existing noise levels.

Peak construction noise levels are assessed at 35 metres from The Northern Road. It is predicted that the additional vehicle movements associated with construction would increase traffic noise by 1.2 dBA (existing road traffic noise levels are 57.8 dBA and the predicted road traffic noise levels are 59 dBA). Residences at a further distance are predicted to receive lower



noise levels than 59 dBA. As a result, no significant noise impacts resulting from construction traffic are anticipated.

Vibration

Expected vibration generating activities include vibratory rolling works, impact piling and the use of excavators and dozers during bulk earthworks.

The closest sensitive receiver to the construction works is greater than 150 metres away. No structural damage vibration impacts are expected at sensitive receiver locations as construction activities are not expected to occur within the structural damage buffer distances.

No sensitive receivers are located within 100 metres of any of the proposed construction works and as such no human comfort or structural damage impacts are expected.


Operational noise has been assessed and includes the following noise sources within the site:

the use of outdoor sports areas during the day

the use of the parking lots within the site during the day (assumed to be at 100% or 50% capacity – based on the GHD’s traffic impact assessment)

the use of the parking lots within the site during the day (assumed to be 20% capacity during evening/night to be conservative)

the use of delivery trucks and inmate transport vehicles (assumed to be 20 heavy vehicle movements per day through main entrance)

the use external generators and substations.

The following noise sources have not been included with the assessment as the noise levels are predicted to be negligible at all sensitive receiver locations:

use of the PA system within internal areas – PA systems are located internally within the buildings/modules are predicted to be inaudible at all sensitive receiver locations

existing and proposed internal mechanical plant - noise emission from existing and proposed mechanical plant is assumed to be negligible at sensitive receivers. This is due to the existing and proposed mechanical plant is located within internal plant rooms within buildings that are over 300 metres from the nearest residents. As such, noise emission from mechanical plant would be negligible at all sensitive receivers.

The predicted operational noise levels are anticipated to comply with the noise criteria for all assessed scenarios. The predicted operational noise levels would comply with the noise emission requirements of the NPI and would not adversely affect the acoustic amenity of the neighbouring residents. The majority of operational activities are expected to occur during the day or evening period, and therefore sleep disturbance impacts are not anticipated.

The predicted noise levels indicate that the operational traffic associated with the DCC proposal would not increase road traffic noise levels by more than 1 dBA at the most affected receiver.


Construction

The following noise and vibration mitigation measures will be implemented throughout the construction phase of the project.

Noise



Working hours

– Noise generating construction activities should be undertaken in accordance within the assessed hour, being: 7 am to 6 pm Monday to Friday; 7 am to 5 pm Saturdays; and no work on Sundays or Public Holidays.

– Work outside normal hours should only comprise: the delivery of materials outside normal hours requested by police or other authorities for safety reasons; and emergency work to avoid the loss of lives and/or property.

– A noise and vibration management sub-plan would be prepared and implemented as part of the CEMP. This would include permissible construction hours, management of construction traffic, a response for noise complaints (including a noise monitoring program if required), the noise and vibration criteria at sensitive receivers and mitigation measures.

Site inductions

– Inductions for the work crew would include the specific noise issues and mitigation measures required for the site. The induction would include:

all relevant standard noise mitigation measures

relevant licence and approval conditions

permissible hours of work

location of any sensitive receivers that may exceed the construction noise management level

construction employee parking areas

designated loading/ unloading areas and procedures

site opening/closing times (including deliveries)

behavioural practices that minimise noise

avoiding dropping materials from height and avoiding metal to metal contact of materials.

The distance between plant and equipment and any sensitive receiver should be maximised where practicable.

Vehicles, plant and equipment would be regularly maintained and kept in good operating condition. Machines found to produce excessive noise should be removed from construction site or stood down until repairs or modifications can be made.

Plant should be turned off when not in use. For example, trucks should not be left idling if not operational.

Noise emitting plant to be directed away from sensitive receivers where possible. Plan worksites and activities to minimise noise emission.

Plan traffic flow, parking and loading areas to minimise reversing movements within the site.

Ensure deliveries occur during standard construction hours, where possible.

Where possible, use structures to shield residential receivers from noise within the construction site.

Where possible, limit impact piling to standard construction hours.

Community relations



Consultation and cooperation with the nearest sensitive receivers will assist in minimising uncertainty, misconceptions and adverse reactions to noise. The following community relation measures would be implemented:

– Department of Justice would establish contact with residents affected by construction noise and communicate the construction program and progress on a regular basis, particularly when noise generating activities are planned. Communication with the local community would be maintained throughout the construction period.

– Department of Justice would provide a community liaison phone number and permanent site contact so that noise complaints can be received and addressed in a timely manner.

– Upon receipt of a noise complaint, monitoring would be undertaken and reported as soon as possible. If exceedances are detected, the situation would be reviewed in order to identify means to attempt to reduce the impact to acceptable levels.

Operation

The following noise and vibration mitigation measures will be implemented during the operational phase of the proposal to protect the acoustic amenity of the nearest sensitive receivers.

Outdoor field and recreational areas

– Ensure use of outdoor areas is scheduled within the day time period only.

– Minimise shouting or other loud noises from inmates or staff while outdoors.

– Avoid slamming doors and gates.

– No music should be played in outdoor areas.

Public announcement (PA) system

– Minimise usage of PA system and only use when necessary for announcements.

– Volume should be adjusted to a suitable level.

– Do not use the PA system to broadcast music.

– If any PA systems are proposed within the outdoor field and recreational areas, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the PA systems does not exceed the relevant noise criteria.

Mechanical plant

– If any large mechanical plant is proposed externally, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the units do not exceed the relevant noise criteria.

Any complaints associated with the operation of the upgraded facility would be investigated as soon as practicable.

7.3 Biodiversity

This section provides a summary of the results of the arboricultural and ecological assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix F. The methodology for the assessment is described in Section 3 of Appendix F.


The site is located on the Cumberland Plain approximately 4 km to the south of the Hawkesbury River. Windsor Downs Nature Reserve is located to the north-east and there are extensive patches of native vegetation to the south, within the Castlereagh Landfill Depot and the



Castlereagh Nature Reserve. The vegetation which occurs to the north of the subject site has been mapped as Shale/Gravel Transition Forest and the vegetation to the north-east, east and south has been mapped as Castlereagh Scribbly Gum Woodland. Both vegetation types are Threatened Ecological Communities listed under the BC Act and EPBC Act.

The subject site includes several areas of grassed open-space, including the proposed DCC expansion site, construction compound sites, as well as infrastructure associated with the complexes, including car parks, structures, sealed roads and formed paths.

There are groups of mature and early-mature native trees (including planted and self-recruited specimens) in the northern and eastern sections of the DCC expansion site, within the car park and to the north and east of the proposed construction compound site (see Figure 7-7 and Figure 7-8). A small patch of planted Spotted Gums to the north-east of the construction compound site is located within the area proposed for the construction of a sewer and macerator. The proposed carpark expansion would encroach into the southern disturbed edge of a complete, continuous patch of native vegetation comprising Shale Gravel Transition Forest within the E2 zone that extends to the north.

Flora

DCC expansion site

The area mostly consists of open grassland, with patches of trees occurring along the northern and eastern boundaries of the DCC expansion site (refer to Figure 7-7, Figure 7-8 and Figure 7-8). There is a small thicket of early-mature trees within the existing ‘Shine for Kids’ child care facility. The trees are mostly mature, although there are patches of self-recruited early-mature Rough–barked Apple (Angophora floribunda) following the drainage line.

Most of the trees growing within the complex are indigenous to Penrith LGA, although there are also a number of early-mature Corsican Pines (Pinus nigra var. corsicana), which have been possibly self-recruited from a small pine forest to the west of the OMMPCC car park.

Although vegetation mapping by Tozer et al. (2010) and by NSW NPWS (2002) indicate the occurrence of Shale/Gravel Transition Forest in this part of JMCC, it is apparent that the tree species form an intergrade of several plant communities including Red Ironbark, Grey Box and Forest Red Gum are canopy components of Shale/Gravel Transition Forest; Drooping Red Gum and Scribbly Gum are canopy components of Castlereagh Scribbly Gum Woodland and Thinleaved Stringybark, Narrow-leaved Ironbark and Rough-barked Apple are canopy components of Shale Plains or Shale Hills Woodland. It is possible that the mixture of canopy species is an artefact of previous plantings or selective logging or an intergrade of self-recruited species in a previously cleared area.

Common species in the groundcover include Axonopus fissifolius, Paspalum dilatatum, Sidarhombifolia, Hypochaeris radicata and Solanum sisymbriifolium. The native grass Couch (Cynodon dactylon) is not common but occurs in small patches throughout the mown grassland. Native shrubs are absent, in response to previous clearing and regular mowing, as well as grazing by rabbits (Octylagus cuniculus) and Eastern Grey Kangaroos (Macropus giganteus). Photographs of the vegetation in the proposal area are shown in Figure 7-7 and Figure 7-8.

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LegendSite Boundary

Vegetation Types

Canopy Components of Shale/GravelTransition Forest (Exotic groundcover)

Exotic Trees

Vegetation Types - Dillwynia248 Bed Expansion

Data Disclaimer

Imagery - Department of Finance, Services & Innovation(2017)



Figure 7-7 Trees on eastern side of the DCC expansion site

Figure 7-8 Trees along the northern boundary adjacent to car park in background, showing part of Shine for Kids child care facility on the right



Existing car park

A formed island separates the access road from The Northern Road and the DCC car park. Although there are no over-mature trees (age class of the trees range between 15 and 40 years), there are components of the adjacent Shale-Gravel Transition Forest. It is possible that some existing trees and shrubs were incorporated into the island when it was constructed, or, alternatively, that the indigenous trees and shrubs have self-recruited from available propagules in adjacent patches of native vegetation. The trees which are growing along the northern edge of the existing carpark would require removal as a component of the carpark extension. These trees are growing as groups or individuals within mown grassland. Although it is likely that some of these trees have been planted, there are also numerous early-mature specimens of Angophora floribunda and Casuarina glauca which appear to have self-recruited apomyctically.

Soils in the site are derived from the Blacktown Soil Landscape Group, although it is possible that the topsoil within the island has been supplemented, perhaps by mulch or by topsoil imported from other parts of the site.

Trees which occur in the island and which are not included as “positively diagnostic” for Shale-Gravel Transition Forest (see OEH 2010) include: Angophora bakeri, Angophora costata, Angophora floribunda, Casuarina glauca and Eucalyptus pilularis. Trees which occur in the formed carpark and which are listed as “positively diagnostic” for Shale-Gravel Transition Forest include: Eucalyptus crebra, Eucalyptus moluccana, Eucalyptus fibrosa, Eucalyptus eugenioides, Acacia decurrens and Acacia parramattensis. Shrub and groundcover species which are indicative of Shale-Gravel Transition Forest include Bursaria spinosa subsp. spinosa, Acacia falcata, Ozothamnus diosmifolius and Melaleuca nodosa.

The trees in the formed carpark vary in condition, with suppression from crowding possibly a contributing factor. Responses to suppressed growth include sparse canopies, development of co-dominant leaders and evidence of borer infestations, especially with the specimens of Angophora costata.

Native vegetation adjacent to the car park extension area

The trees in and around the car park are mostly separated from the adjacent patches of native vegetation by an open area of mown grassland. The most common species in the grassland are exotic, especially Carpet Grass (Axonopus fissifolius) and exotic forbs; e.g. Plantago lanceolata, Hypochaeris radicata and Taraxacum officinalis. During the survey, a large group of Australian Wood Ducks (Chenonetta jubata) was recorded, foraging in the grassland.

The grassland is mown regularly, to the edge of the adjacent forest, with the result that there is no ecotone, and therefore there are evident edge effects.

A patch of native vegetation extends from the edge of grassland to the north and north-east, of the car park towards Windsor Downs Nature Reserve (although the corridor connection is divided by Richmond Road).

Although the vegetation is mapped as Shale Gravel Transition Forest by OEH (2013), it is apparent that there are also a number of canopy components which are more typical of Castlereagh Scribbly Gum Forest. It is therefore likely that the vegetation would best be described as an intergrade between Shale Gravel Transition Forest and Castlereagh Scribbly Gum Woodland. However, for the purposes of this assessment and given the presence of more typical Shale Gravel Transition Forest to the north the area of disturbance has been described as Shale Gravel Transition Forest.

The separation between the vegetation patch and adjacent grassland is abrupt, because the grassland is regularly mown to the vegetation edge. Obvious response to these edge effects is



the presence of necrotic shrubs and dense thickets of self-recruited shrub species, growing close to the mown edge.

The southern edge, part of which would be affected by the car park expansion is described below:

Structure: trees to 18 m; Foliage Projective Cover (FPC) 15%. Shrubs from two to five metres; FPC 20% within patch, but mostly 25% along edges. Groundcovers; grasses and forbs to one metre; FPC 45%.

Floristics: the canopy species vary: at the eastern end of the patch, Scribbly Gum (Eucalyptus racemosa subsp. racemosa) commonly occurs with Ironbarks, especially Eucalyptus crebra and with occasional individuals of Eucalyptus parramattensis subsp. parramattensis, indicating an intergrade with Castlereagh Scribbly Gum Woodland. At the western end, near the entrance gate, and within the proposed construction area, common canopy species are Ironbarks Eucalyptus fibrosa and Eucalyptus crebra with thin-leaved Stringybark Eucalyptus eugenioides, Grey Box Eucalyptus moluccana and Forest Red Gum Eucalyptus tereticornis.

Common shrub and small tree species include Bursaria spinosa subsp. spinosa, Acacia falcata, Acacia decurrens, Acacia parramattensis, Acacia linifolia, Ozothamnus diosmifolius, Daviesia ulicifolia and Pultenaea villosa.

Common groundcover species include Microlaena stipoides var. stipoides, Themeda triandra, Rytidosperma tenuius, Aristida vagans, Dianella revoluta var. revoluta, Lomandra filiformis subsp. coriacea, Goodenia hederacea subsp. hederacea and Lepidosperma laterale.

Surveyed trees within the car park expansion area are described in detail in the Tree Schedule in Appendix C of Appendix F and are their locations are indicated on Figure 7-9.

Dillwynia248 Bed

Expansion

CarPark

Expansion

54

5655

79

78

77 57

5876

59

6174

64

63

6075

73

72

71

70

65

67

68

69

62

51

66

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LegendSite Boundary

Surveyed Trees

Proposed carpark

VegetationShale/Gravel Transition Forest

Surveyed Trees - Car Park

Data Disclaimer

Imagery - Department of Finance, Services & Innovation (2017)Vegetation - OEH 2013



Construction compound site

No trees are growing within the proposed DCC construction compound site. The area of mown grassland mainly consists of exotic grasses and forbs (Figure 7-10).

Figure 7-10 Lines of planted Spotted Gums

(The construction compound would be installed on clear land to the right of these trees)

Two lines of planted trees, mostly Spotted Gum (Corymbia maculata) occur along the eastern side of the proposed DCC site. It is possible that the lines of planted Spotted Gums may require protection during construction, if any works are proposed within 5 metres of the base of these trees.

Sewer and macerator site

The location of the new sewer and macerator to the south of the DCC site contains a small group of trees. The group consists of three mature specimens and four early-mature specimens. Two of the mature specimens are in moderate to poor vigour, with sparse canopy and evidence of longicorn damage in the leaders. One mature specimen and one early-mature specimen have co-dominant leaders, possibly in response to previous branch failure or mechanical damage. The groundcover is sparse and mostly consists of exotic grasses, especially Carpet Grass and Paspalum. No shrubs occur within the patch. The area appears to be regularly mown, in which case any self-recruited tree or shrub species are unlikely to survive.

Fauna and fauna habitats

DCC expansion site

During the survey, the open grassland was observed to be providing foraging habitat for Australian Wood Ducks (Chenonetta jubata) and Masked Lapwings (Vanellus miles). A White-faced Heron (Ardea novaehollandiae) was recorded foraging in the creek line. Several bird species were also recorded in the trees (refer to Appendix F).



No nests were recorded in any trees or on the ground. The trees are mature to early-mature, therefore no hollows occur in any trees on the site.

Microchiropteran bats that are likely to forage within the complete, continuous patches of native vegetation in the nearby Windsor Downs Nature Reserve and Castlereagh Nature Reserve may forage on the site but are unlikely to roost in trees on the site, given the young age of the trees and absence of roost sites (e.g. hollows, peeling bark etc). There is no suitable roosting habitat for cave-roosting species.

Numerous scats and tracks indicate that rabbits (Octylagus cuniculus) and Eastern Grey Kangaroos (Macropus giganteus) are also regular visitors to the site.

Trees within the car park extension area

No nests or other signs of permanent fauna occupation were recorded within this area. Common avian species were recorded foraging or resting in the canopies of the trees.

Several Eastern Grey Kangaroos (Macropus giganteus) were recorded resting along the edge of the car park.

Native vegetation adjacent to the car park extension area

The disturbed edge of the patch of woodland vegetation provides foraging and shelter habitat for common fauna species typical of disturbed urban vegetation and open grasslands. No over-mature, hollow-bearing trees were recorded in this area. No nests were recorded or signs of roosting habitats were recorded.

There are more extensive areas of intact native vegetation to the north and north-east of this area that would provide habitat for a wider range of woodland and forest species.


The fauna habitat value of the site is low given the lack of floristic and structural diversity. The site has a groundcover of mostly exotic grass and forb species, which is heavily grazed by kangaroos and rabbits.

The trees occurring in this site do not have canopy connection to any complete, continuous patches of native vegetation.


No nests were recorded in the canopy and no scratches were recorded on the leaders. The three mature trees are less than 30 years old, and therefore are too young for the development of hollows.

Threatened Biota

A search of threatened species database indicates 22 threatened bird species, five bat species, one gastropod and four arboreal marsupials previously recorded or predicted to occur within a 10 km radius of the site.

Habitat value for threatened fauna species in most areas of the DCC site is restricted by factors including proximity to roads and buildings, lack of canopy connection to any patches of native vegetation, and lack of associated mid-storey. It is possible that more mobile threatened species, including microchiropteran bats and the Grey-headed Flying Fox could use the trees for foraging, although the trees on the DCC site would not comprise important habitat for the persistence of a local population of these species.

Castlereagh Scribbly Gum Woodland occurs to the north-east of the DCC site. Castlereagh Scribbly Gum Woodland in the Sydney Basin Bioregion is listed as a Vulnerable Ecological



Community (VEC) under the NSW BC Act and an Endangered Ecological Community (EEC) under the Commonwealth EPBC Act.

Shale-Gravel Transition Forest occurs to the north and north-east of the DCC car park expansion area and DCC expansion area. Shale-Gravel Transition Forest in the Sydney Basin Bioregion is an Endangered Ecological Community (EEC) listed under the BC Act and a Critically Endangered Ecological Community (CEEC) listed under the Commonwealth EPBC Act.

The southern edge of the vegetation patch proposed for disturbance at the north-western end of the car park expansion area contains components of two threatened ecological communities (TECs), Shale Gravel Transition Forest and Castlereagh Scribbly Gum Woodland. The latter is listed as a Vulnerable Ecological Community under the BC Act and an Endangered Ecological Community under the EPBC Act.

This vegetation may provide foraging habitat from some threatened fauna species on occasion, including micro bats that forage along the interface of woodland and cleared areas and the Grey-headed Flying Fox, when trees are flowering. There are more extensive areas of intact native vegetation to the north and north-east of the area proposed for disturbance, including within areas to the north and north-east of the subject site which are likely to provide more valuable habitat for threatened species in the locality.

The double line of planted Spotted Gums which occur near the eastern boundary of the compound site do not constitute a Threatened Ecological Community, although they may provide foraging resources for microchiropteran bats and the Grey-headed Flying Fox.


Flora

Trees that are required to be removed for the DCC proposal are shown in Figure 7-6 and Figure 7-9.

DCC expansion site

All of the trees within the DCC expansion area would be removed (refer to Figure 7-6). Approximately 24 trees would require removal from within or adjacent to the existing Shine for Kids centre, and 23 mature trees and 30 juvenile and early-mature trees (including several self-recruited Corsican Pines) would require removal from the eastern edge of the site. These trees are representative of the TECs Shale/Gravel Transition Forest or Castlereagh Scribbly Gum Woodland.

The existing environments at these sites do not provide habitat of importance for the persistence of any previously recorded threatened biota listed under the BC Act or threatened or migratory biota listed under the EPBC Act.

Car park extension area

Approximately 16 trees would be removed for the car park extension area. The remaining trees in the car park would be retained and would require protection from impacts during excavation and construction.

The trees adjacent to the car park which are proposed for removal are trees/tree groups 58 to 61 and 63 as shown in Figure 7-9. Tree Group 57 (comprising one Smooth-barked Apple and 3 Swamp Oaks) is located close to the construction footprint and may also require removal dependent on the extent of encroachment of the Tree Protection Zones (TPZs).



The proposed car park extension would also require the removal of the southern edge of native vegetation, containing six canopy trees (Trees 64 to 68) and mid-storey and ground-cover species listed as indicator species for either Shale Gravel Transition Forest or Castlereagh Scribbly Gum Woodland. The small area of edge vegetation that would be removed represents the disturbed southern edge of an extensive patch of conserved Shale Gravel Transition Forest TEC located to the north.

All trees proposed for removal are less than 40 years old. No over-mature, hollow-bearing trees occur on the site. Most of the trees occur as scattered individuals growing within mown lawns. Mid-storey and native groundcover species are absent, apart from within the southern edge of the adjacent patch of native vegetation that would be disturbed for the car park extension.


The proposed construction compound site is located within an area of mown grassland mainly consisting of exotic grasses and forbs. No trees are growing within the construction compound site.

The two lines of planted trees, mostly Spotted Gum, that are located along the eastern side of the compound site and an over-mature specimen of Scribbly Gum (Eucalyptus racemosa subsp. racemosa) to the north may require protection to avoid impacts within TPZ if works are proposed within 5 metres of the base of these trees.


Seven Spotted Gums would require removal to provide space for installation of the sewer and macerator. These trees are planted and are located within an area with a mown exotic grass groundcover.


The proposed works would involve the removal of a small patch of intact native vegetation from the disturbed edge of an existing conserved patch of native vegetation to the north of the car park expansion area. All trees proposed for removal occur within disturbed areas with limited habitat for threatened fauna. Disturbance of the vegetation in the DCC site, car park expansion areas and construction compound site as part of the proposed works is unlikely to result in a direct or indirect impact on any habitat of importance for threatened flora and fauna species.

The patch of edge vegetation may provide limited shelter and forage opportunities for some fauna species. As the proposed clearing would involve the loss of only 0.05 ha of existing vegetation, comprising 5 canopy trees with a disturbed understorey and groundcover, it is unlikely that such a loss would result in significant impacts to any threatened flora or fauna species.

The use of machinery and general disturbance associated with the proposed works may deter the common bird species and kangaroos that currently occur on the site from foraging in the immediate vicinity. This would only be temporary for the duration of the works and is unlikely to cause significant impacts to any local fauna populations.

Although the trees may provide some nectar for Grey-headed flying foxes in Autumn, the trees proposed for removal represent a very small proportion of the number of mature and early-mature Spotted Gums in this planted group, therefore, after their removal, there would continue to be a supply of Autumn nectar for Grey-headed Flying-foxes from this line of trees.

Significance of impacts

An Assessment of Significance has been prepared to consider the impact of clearing 0.05 ha of Shale Gravel Transition Forest from part of the southern edge of an extensive, conserved patch



of native vegetation for the car park expansion (provided in Appendix F). The findings of the assessment concludes that there would be no significant impact to the TEC Shale Gravel Transition Forest.

On the basis of the above considerations, the DCC expansion area and associated works would not have a significant impact on threatened or migratory biota listed under the BC Act or the EPBC Act.


Operation of the proposal would not result in any impact to biodiversity.


Construction

The following measures are recommended with respect to tree removal, and the protection and management of trees in the proposal site:

Machinery carrying out clearing of the edge vegetation would only operate from the grassed area, in order to minimise disturbance to the newly established vegetation edge.

The shrubs and trees which require removal should be removed carefully, in accordance with relevant requirements and guidelines including Safe Work Australia (2016).

If appropriate, the felled trees should be mulched and spread over the TPZ of retained trees or regeneration areas.

Trees in the following areas which are proposed for retention may require protection during tree clearing, excavation and construction:

– Existing car park;

– Newly established vegetation edge adjacent to car park extension;

– Line of Spotted Gums adjacent to Construction Compound

– Two Scribbly Gums to the west of the proposed sewer and macerator.

The extent of protective fencing should be determined at the discretion of the Project Arborist.

Fencing should be installed prior to clearing or excavation and should be kept in place during construction. An adequate TPZ should be established by the Project Arborist who should then supervise installation of appropriate protective fencing. An example of suitable protective fencing is indicated in Appendix E of Appendix F.

The following actions should not be permitted within TPZs:

– Storage of materials, plants or equipment

– Installation of site sheds or portable toilets

– Excavations, trenching, ripping or cultivation of soils

– Modification of existing soil level or addition of fill materials

– Disposal of waste materials and chemicals (both solid or liquid)

– Mechanical removal of vegetation

– Pedestrian or vehicular movement.

Any root pruning required within the TPZ should be approved by the Project Arborist and any digging and pruning of roots (only roots < 5 cm may be pruned) within the TPZ should be conducted by hand for a clean cut.



To protect soil within the TPZ, a layer of organic mulch may be applied (no more than 75 mm thick). Any mulch used should comply with the Australian Standard – composts, soil conditioners and mulches AS4454-2012 (Standards Australia 2012).

A Project Arborist should supervise works and inspect excavated areas adjacent to retained trees, in order to assess the amount of tree fine roots affected, the loss of which may affect tree health and the amount of supporting roots affected, the loss of which may affect tree stability. The project arborist would then determine appropriate ameliorative measures for retained trees (e.g. canopy reduction, irrigation, fertiliser applications) or provide recommendations for tree removal if required.

Temporary fencing should be installed along the new vegetation edge to prevent disturbance of the Shale Gravel Transition Forest TEC adjoining the construction footprint in the proposed car park extension area. Machinery access should be restricted to the grassed area to the south of the vegetation patch.

All workers should be inducted prior to commencing work and the conservation significance of the adjacent vegetation should be stressed.

The newly created edge would be susceptible to weed encroachment. A thick belt of appropriate shrub species should be planted as soon as possible after the disturbance. The plantings should be monitored over the next twelve months and any weed species which germinate or re-sprout should be removed.

The Landscape Plan for the proposal should only include appropriate indigenous native species which are representative of the surrounding native vegetation types. Ideally, the plants should be obtained from a local bush regeneration nursery and all plants should be of local provenance. Under no circumstances should cultivars or commercially produced hybrids be planted, in the interests of minimising genetic pollution.

If any threatened species (flora or fauna) is discovered during the works, stop work immediately and notify the site’s environmental representative. Work will only recommence once the impact on the species has been assessed and appropriate control measures provided.

Operation

No mitigation measures would be required.

7.4 Bushfire hazard

This section provides a summary of the results of the bushfire assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix G. The assessment was informed by desktop research and a site visit undertaken in August 2018.


Context

The existing built environment of the DCC site and areas to the south and west of site consists of buildings and structures situated within cleared, landscaped and maintained grounds. To the north and south of the DCC site there are areas of native vegetation cover. These areas of native vegetation trigger the inclusion of parts of the site within the bushfire prone area as identified on Penrith City Council’s Bushfire Prone Land Map.

As seen in Figure 7-11 the following parts of the DCC site are identified as Bushfire prone area within Penrith’s Bushfire Prone Land Map:

north-eastern portion of the DCC site falls within a 100 metre wide bushfire-buffer



north-western side of the proposed car park expansion is located within Vegetation Category 1

south-eastern side of the proposed car park expansion is located within the 100 metre wide bushfire-buffer.

The location of DCC within the bushfire buffer area means that buildings within, or partly within, the bushfire prone buffer would require bushfire protection measures satisfying the requirements of Planning for Bushfire Protection (NSWRFS, 2006).

The remaining area within the DCC site is not classed as bushfire-prone as it is within developed and cleared/landscaped area, and is located more than 100 metres from retained forest vegetation.

BENNETT R

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DillwyniaCorrectionalComplex

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LegendOriginal Site BoundaryWaterbodiesWaterwaysCadastreDillwynia Wall BoundaryProposed CarparksProposed Buildings

Bushfire Prone Land

Data Disclaimer

Imagery - Department of Finance, Services & Innovation (2017)Bushfire Prone Land - Penrith City Council (Dated: 10/11/2014)

Site location




Vegetation assessment

Field inspections were undertaken to confirm vegetation types occurring on site that may contribute to bushfire fuel loads. The field inspections undertaken by GHD during August 2018 confirm that the vegetation types occurring immediately north of the DCC site, within the area depicted on the Penrith City Council map as Category 1 vegetation, is Castlereagh Scribbly Gum Woodland (CSG Woodland).

CSG Woodland in this location is classifiable as a Dry Sclerophyll Forest (Shrub/grass sub-formation) in accordance with Planning for Bushfire Protection (NSWRFS 2006).

This vegetation formation can support high intensity bushfires, most likely burning as an understorey fire or fast moving crown fire. As the DCC site has been cleared, and the only overlap is with the outer edge of the bushfire buffer, the risk posed by this vegetation type is reduced principally to ember attack.

Planning for Bushfire Protection (NSWRFS 2006) assumes that for Dry Sclerophyll (Open) Forest types, 25 tonnes per hectare of fuel is present. This refers to the total fuel load present in ground and understorey strata (surface, near-surface and elevated fuel strata, inclusive of bark). Fuel loads and understorey vegetation characteristics in unmodified CSG Woodland at the DCC site are consistent with Planning for Bushfire Protection fuel load assumptions.

Slope Assessment

The DCC site is situated on relatively flat topography, with landform under the adjacent bushfire prone vegetation located within 140 metres of the site being flat. Slope would have no material effect on bushfire behaviour at the site.

Bushfire Attack Level (BAL) Assessment

The BAL has been determined using Planning for Bushfire Protection (2006). The BAL uses the buildings distance to the forest and the lands slope to determine the BAL category. A BAL level of 12.5 has been determined as such Level 1 construction would assist building survival during a bush fire as required by Planning for Bushfire Protection (RFS, 2006).

Determination of Asset Protection Zone (APZ)

A key bushfire protection performance measure is maintaining a degree of separation between buildings and bushfire prone vegetation. It has been determined that there is a minimum of 80 metres separating separation between the buildings and bushfire hazard. Therefore it is recommended that this existing minimum APZ extending 80 metres would assist in preventing radiant heat levels on the proposed building located within the bushfire buffer

Emergency access/egress requirements

Road access and egress from emergency service vehicles into the DCC site is via The Northern Road. Access to and from the DCC site to the public road network is via the existing JMCC road network. The existing network of internal roads meet or exceed Planning for Bushfire Protection requirements, thus meeting acceptable solutions for provision of safe access for emergency service vehicles.

Water supply and utilities

In the event of a bushfire, the DCC site is serviced by existing mains water which can be accessed by fire and emergency services.

The electrical services to the proposed DCC site is via underground services and do not increase the bushfire risk.

Bush Fire Emergency Management and Evacuation Plan



Existing evacuation and emergency planning procedures are established for the DCC site, as documented in the existing JMCC Bushfire Emergency Management Plan.

The DCC site is served by an existing bitumen, two-way road that is connected to an internal bitumen road network through a single egress via The Northern Road. The road providing direct access to the building meets Planning for Bushfire Protection (PBP) 2006 Acceptable Solutions requirements in full, and provides safe, clear operational access and egress for emergency service personnel and facility users, as per the objectives.

Factors effecting bushfire behaviour

The principal factors influencing bushfire behaviour are the state of bushfire fuel accumulation in adjacent forest vegetation and the weather prevailing at the time a fire is burning within the JMCC site.

The weather associated with generating a high intensity fire hazard to the site would be a bushfire driven by strong dry winds from the north or the north-east.


The Bushfire Assessment Report (GHD August 2018) assessed the local environmental features that have the potential to increase the risk of bushfire hazard on the proposal and whether the DCC proposal meets the requirements of Planning for Bushfire Protection 2006 (NSWRFS 2006).

Construction activities have the potential to cause bushfire due to:

Hot works during construction including welding and excavation (excavator bucket making contact with rock)

Build-up debris under vehicles or machinery, discarded cigarettes and domestic rubbish such as glass bottles.


Once the proposed works are complete, there would be no additional impacts to bushfire hazards. On-going measures are provided in section 7.4.4 below to ensure bushfire hazards are minimised at all times.


Construction

Hot work (such as welding) outside during dry weather or periods of prolonged bushfire risk would be avoided.

In the event of a bushfire, work is to cease and workers evacuated in accordance with standard emergency response procedures.

Design of above ground items would be in accordance with the bushfire protection measures included in the RFS guideline Planning for Bushfire Protection 2006.

Shrubs would not be planted close to any buildings.

Fences, sheds and structures would be constructed of non-flammable material and be clear of trees and shrubs.

Ensure fire hydrants are serviceable and available.



Operational

General site maintenance would be undertaken as per existing maintenance procedures in order to minimise bushfire risk.

All grasses are would be maintained at a height of a maximum 50 mm.

The crowns of trees would be separated where practical such that there is a clear separation distance between adjoining tree crowns.

Lower branches of trees would be pruned to stop a surface fire spreading to the canopy of the trees.

Trees or shrubs would be regularly cleared of any dead material.

Gas cylinders would be stored in an area that is clear of all flammable material and securely tethered with non-flammable fastenings to prevent toppling over.

Roof gutters would be cleaned regularly to ensure they are free of leaves and other combustible material.

Driveways and access ways would allow for the safe passage for emergency vehicles to all buildings and assets on the land.

In the event of a bushfire, emergency management and evacuation would be undertaken in accordance with the John Morony Correctional Complex Bushfire Emergency Management and Evacuation Plan.

7.5 Soils, erosion and water quality


Topography, geology and soils

The DCC site is located within relatively flat regional topography.

The Penrith 1:100,000 Geological Sheet 9030 indicates that the northern portion of the DCC site is underlain by Tertiary fluvial deposits comprising Rickabys Creek Gravels (‘conglomerate, matrix supported’) associated with nearby Rickabys Creek, whilst the southern portion of the site is underlain by Londonderry Clay (‘clay and patches of ferruginized, consolidated sand’).

The Soil Landscape Map 1:100,000 of Penrith indicates that the landscape at the DCC site is located within the Berkshire Park soil landscape group, characterised by dissected, gently undulating low rises on tertiary terraces of the Nepean and Hawkesbury River systems. Soils in this landscape comprise clay and clayey sands with ironstone nodules and silcrete and impermeable subsoils.

Subsurface conditions

Several geotechnical investigations have been undertaken at the DCC site between 2012 and 2018.

Previously encountered ground conditions at the DCC site include fill to a depth of 5.2 metres comprising landfill materials including rootlets, broken pieces of ironstone and igneous rock, cobbles and used rubber tyres in a matrix of silty clay (AECOM, 2017).The fill is underlain by alluvium comprising stiff to very stiff silty clay of low to medium plasticity to a depth of 12.3 metres. Medium dense to dense clayey sand is found between depths of 12.3 and 14.6 metres, beyond which is an extremely weathered and extremely low strength shale bedrock at a depth of 14.6 metres.



A recent geotechnical investigation undertaken by JK Geotechnics in June 2018 indicated that fill comprising silty clay, silty sandy clay, rubber tyres within a soil matrix, silty sand, silty clayey sand, gravelly clayey sand and silty gravelly sand was encountered from the ground surface and extended down to depths between 0.5 metres and 5.5 metres. Sandstone, igneous and ironstone gravel, timber, rubber (including whole tyres), wire fragments and sandstone cobbles were present within the fill.

Fluvial silty clay and silty sandy clay of generally medium plasticity and hard strength was encountered below the fill in a number of test bores and extended down to borehole/test pit termination depths of a maximum seven metres below ground level.

Buried tyres

Geotechnical investigations indicate that the DCC site is a former landfill site (AECOM, 2017) and that buried tyres were encountered at depths between one and five metres at localised pockets throughout the DCC site (JK Geotechnics, 2018).

Based on review of previous and current borehole and test pit logs and with reference to the provided test pile record sheets, the extent of buried tyres across the site has been inferred to be throughout the majority of the area, excepting the northwest corner and the southern end of the DCC site.

Acid sulfate soils

A search of the Australian Soil Resources Information System (ASRIS) identified that the proposal is located in an area of extremely low probability of acid sulfate soils.

The DCC site is not located in an acid sulfate soil risk area according to risk maps prepared by the Department of Land and Water Conservation.

Contamination

A Preliminary Site Investigation has been undertaken by EIS in July 2018. The investigation encountered deep filling (in excess of 5.5 metres in the north-west corner) in some sections of the DCC site. Fragments of building rubble were observed across the surface of the DCC site. Sampling and analysis did not identify any chemical contaminants in the fill, however fibre cement fragments were identified on the surface of the site and buried beneath the surface. The investigation concluded that the site is considered suitable for the proposal.

Dryland salinity

The DCC site is located in an area of moderate to high salinity potential (Lotsearch result, EIS, 2018).

Surface water

There is a drainage swale running approximately north-south on the eastern side of the DCC site. The drainage swale is approximately eight metres wide and ranges between approximately between 1.4 metres and 1.7 metres in depth. The sides of the swale grade are mostly grass covered with localised scour of the sides evident. Vegetation is present at the base of the swale and there are small to medium sized trees growing within the swale (JK Geotechnics, 2018).

A dam is located approximately 250 metres to the northeast of the site within the boundaries of JMCC.

The nearest waterway is Rickabys Creek,located approximately 1.5 kilometres north of the site. Contour plans suggests that any surface water flows from the site would eventually find its way to Rickabys Creek via the regional stormwater system.



Flooding

The DCC site is not located within the area mapped as a Flood Planning Area under the Penrith LEP.

The entrance to JMCC appears to be at the edge of probable maximum flood area according to Figure 1 of Hawkesbury-Nepean Valley Flood Risk Management Strategy (Infrastructure NSW 2017). The DCC site is not affected by the regional 1:100 year flood event nor the probable maximum flood area.

Groundwater

Information on the presence of groundwater at the DCC site was obtained from a number of geotechnical investigations that have been undertaken at the proposal site.

Hydrogeological information obtained by EIS (2018) indicated that the regional aquifer on-site and in the areas immediately surrounding the DCC site includes porous, extensive aquifers of low to moderate productivity.

In a geotechnical investigation carried out by AECOM in 2017 comprising three boreholes, groundwater was only encountered in one borehole at depth of 12.3 metres towards the northeast corner of the site. During the geotechnical investigation in 2018, groundwater was measured at two test pits within the southern portion of the DCC site, at depths of 3.9 metres and 3.8 metres. With the exception of these two test pits, other boreholes and pits were dry during and on completion of drilling/exaction.

JK Geotechnics inferred the groundwater observed as ‘perched’ within the buried tyres and does not represent the true groundwater, which was inferred to be well below existing grade.


Construction of the new facilities would involve disturbance to the ground surface to construct the slab, footings, and connection to underground services.

Ground disturbance associated with proposed works would only involve minimal excavation and it is likely that stockpiles of excavated soil would be reused on site. Excess spoil would be tested for suitability to be used as fill material. If the relevant criteria are met, the spoil may be reused at the OMMPCC site to meet their fill requirements. Any surplus soil would be disposed of offsite at an appropriate licenced facility.

The proposal also has the potential to result in soil and water contamination via any accidental fuel or chemical spills from plant and equipment. The potential for impacts as a result of any spills or leaks would be managed by the implementation of measures provided in section 7.5.4.

During construction there is potential to encounter previously buried tyres or fragments of building rubble including soil contaminated with asbestos containing materials. Exposure to asbestos containing materials could pose a health and safety risk to construction workers through ingestion, dermal contact or inhalation.

Occupational health precautions for site construction workers associated with these risks and recommended protection and precautionary measures are outlined in section 7.7.7. These would be subject to review and development of a comprehensive occupational health and safety plan by the construction contractor.

Construction works would also result in stockpiles of excavated soil. Excavation and stockpiling activities, if not adequately managed, could have the following impacts:

erosion through exposed soils and stockpiled materials

dust generation from excavation works, and vehicle movement over exposed soils.



an increase in sediment loads entering the stormwater system and the nearby receiving waterways.


Operation of the proposal would not impact topography, geology, soils or water quality at the site. Aside from the building areas, the site would be sealed or landscaped where required. No erosion or sedimentation impacts are anticipated during operation.

Operationally, DCC currently has response measures in place for a probable maximum flood event should this occur. The increase in bed numbers would not fundamentally change the operational nature of the response, but rather the quantum of inmates to be managed. Furthermore, the proposed expansion is at a higher level topographically than the existing facility and therefore at a lesser risk.


Site preparation

Due to the presence of buried tyres within the fill profile, stripped topsoil and root affected soils would be stockpiled separately as they are considered unsuitable for reuse as engineered fill or for the foundation of proposed new buildings. The topsoil and root affected soils may be reused for landscaping purposes.

Construction

A soils, erosion and water quality management sub-plan would be prepared and implemented as part of the CEMP. It would detail the measures to minimise the potential for soil and water quality impacts, and would include the following measures as a minimum

– Sediment and erosion control devices would be installed around work sites and maintained to minimise the transport of sediment in accordance with Managing Urban Stormwater, Soils and Construction, Volume 1 (Landcom, 2004). These devices would be inspected weekly and immediately after rainfall to ensure their effectiveness over the duration of the works. Any damage to erosion and sediment controls would be rectified immediately.

– The area of exposed surfaces would be minimised and disturbed areas would be stabilised progressively to ensure that no areas remain unstable for any extended length of time.

– Prior to transfer and reuse at any other site than at the DCC site, excess spoil would be tested for suitability, including the potential for spoil to be contaminated with asbestos containing material.

– Should excess spoil need to be removed off-site, a more detailed waste classification and chemical assessment will need to be conducted to allow appropriate classification and disposal of the materials.

– Prior to construction works commencing, soil would be assessed for dryland salinity as dryland salinity can have an adverse impact on construction materials. Construction contractor would undertake appropriate measures regarding construction materials in based on the result of the soil assessment.

– Wherever possible, soil and sediment that accumulates in erosion and sediment control structures during site restoration would be reused unless it is contaminated or otherwise inappropriate for reuse.



– Work would be ceased in the immediate vicinity of any areas of suspected contamination that are identified prior to or during work unless specific provisions and procedures have been put in place to satisfactorily address these issues.

– Vehicle and machinery movement would be confined to designated roads, tracks, pathways and work areas. Designated lay-down areas would be selected to minimise erosion or vegetation damage.

– Work would be ceased during heavy rainfall events when there is a risk of sediment loss off-site or ground disturbance due to water logged conditions.

– Any groundwater or leachate intercepted by the proposal would be treated appropriate for the intended disposal method. No groundwater (or leachate) is to be discharged from site into adjacent areas or stormwater systems prior to treatment in accordance with the relevant regulatory requirements.

– Equipment, plant and materials would be placed in designated areas where they are least likely to cause erosion.

– Following completion of work, land surfaces would be restored to as close as possible to pre-existing conditions.

Buried tyres, should they be exposed, would be piled separately and managed in accordance with waste management measures provided in section 7.7.6.

Operation

No mitigation measures would be required during operation.

7.6 Socio-economic

This section provides a summary of the results of the socio-economic assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix H. The methodology for the assessment is described in Section 2 of Appendix H.


The community with the potential to be impacted by the proposal would include:

inmates and staff at the existing DCC

visitors to the existing DCC and other facilities within the JMCC

nearby residents in the suburb of Londonderry

users of local community facilities such as park and recreational facilities including Windsor Downs and Castlereagh Nature Reserves.

Inmates

There are currently 277 inmates within the DCC. The inmates spend their time outside the cells between the hours of 8 am and 4 pm.

Programs for inmates

Services and programs available for inmates at the DCC include the following:

Intensive Drug and Alcohol Treatment Program (IDATP) – a program to help inmates gain an understanding of their substance abuse dependence and offending behaviour, reduce the likelihood of re-offending and provide them the skills, resources and support needed to return to the community, alcohol and/or drug-free and crime-free.

Greyhounds as Pets - a collaboration between Corrective Services NSW and Greyhound Racing NSW which aims to rehabilitate greyhounds for re-housing. The program offers



educational opportunities for inmates and is conducted under the supervision of correctional officers who have access to training and development opportunities related to animal studies.

Various employment opportunities for ground maintenance works, centre hygiene, packing and food services.

Staff

There are on average 54 staff on a weekday and 62 staff on a weekend at the DCC, spread across four shifts.

Visitors to the DCC

The existing operation of DCC with regards to visitors has been described in section 3.1.2

It is assumed that the majority of visitors are family members or relatives of the inmates. Based on a survey of visitors to NSW Correctional Centres conducted by the CSNSW in 2012, 23% of visitors reported visiting their ‘son or daughter’, 19% reported visiting their ‘husband or de facto’, 8% selected ‘other’ relationship (which includes cousins, grandchildren, aunts and uncles, nieces and nephews, and in-laws). Six percent did not disclose the nature of their relationship with the prisoner they were visiting.

SHINE for Kids, a child care and family centre, is a facility available for all visitors visiting inmates at JMCC. This facility provides a family friendly environment and a drop-in service for visitors before or after their visit. It is equipped with children’s playground and provides families with opportunities to connect with each other. The centre is currently open Monday to Friday 9.30am to 5.00pm and Saturday and Sunday from 9.45 am to 3.15 pm.

SHINE for Kids was originally located at the northeastern corner of the DCC site and has been recently moved to an alternate location about 200 metres from this location as part of the project early works.

Nearby residents

The nearest residential areas to the DCC site are in the suburbs of Berkshire Park, Bligh Park and Londonderry. The suburbs of Berkshire Park and Bligh Park are buffered from the site and separated by bushland.

Londonderry is a rural residential suburb with the following characteristics (Australian Bureau of Statistics, 2016 Census):

population of 3,906 people

median age of 38

51.6% are male, with 48.4% being female

Aboriginal and Torres Strait Islander people make up 4.5% of the population

there are 1,001 families, with average of 1.1 child per family

there are 1,210 private dwellings

21.8% of people were born overseas, with top countries of birth including Malta (2.6%), England (2.5%), New Zealand (1.4%), Italy (0.5%) and Netherlands (0.5%)

62.9% of people work full time, 28.6% working part time. The unemployment rate at Londonderry is 2.5%, which is less than the national average of 6.9%.

Users of local community facilities

Community facilities located within five kilometres from the DCC site include:



SHINE for Kids Child and Family Centre, located within JMCC about 200 metres south of DCC

Evolve Early Learning Centre, located in Bligh Park about two kilometres northeast of the site

Berkshire Park Community Centre, located around 2.3 kilometres south of the site

Londonderry Public School and Londonderry Early Learning Centre, located around 3.8 kilometres west of the site

Londonderry Neighbourhood Centre, located around 4.8 kilometres west of the site.

Users of surrounding parks and recreational area

Parks and recreational areas within five kilometres from the DCC site include:

Windsor Downs Nature Reserve, located about 450 metres southeast of the site

Castlereagh Nature Reserve, located about 2.3 kilometres south of the site.

Windsor Downs and Castlereagh Nature Reserves protect one of the largest and most ecologically intact remnants of the Cumberland Plains Woodlands in Western Sydney. Use of the reserve is limited to daytime use along designated walking trails.


Impact on inmates, staff and visitors

The majority of visitors to correctional centres are family members of inmates. Maintaining family ties during imprisonment is important for both inmate and the family members. Moreover, maintaining these relationships could contribute to inmate’s successful re-integration into community life (CSNSW, 2010). This would in turn result in a benefit to the wider society.

As such, it is important that visitors’ access to the DCC is maintained during construction. Construction activities may result in inconvenience to inmates, staff and visitors through temporary changes to traffic conditions, noise levels, air quality and visual amenity.

Staff and visitors may also experience traffic impact due to increases in construction traffic and particularly while car park expansion is being undertaken. There is potential for some visitors, particularly families with children, to become concerned about potential impacts to pedestrian safety as a result of increased construction vehicle movements within JMCC.

The DCC proposal is not expected to impact on any facilities or programs currently available for the inmates at DCC. Construction of the DCC proposal would not impact on the operation of the SHINE for Kids child and family centre and as such, visitors to the DCC would be able to continue to use this facility once it has been relocated (as assessed in the early works REF described in section 1.5.3).

Impact on nearby residents, users of local community facilities and users of surrounding parks and recreational areas

During construction, there is potential for nearby residents, users of local community facilities and surrounding parks and recreational areas to experience changes in noise, air quality and traffic.

As indicated in sections 7.2 and 7.7.3, construction is expected to cause a short-term and temporary increase in background noise levels and air quality. Residents, users of local community facilities and recreational users of Windsor Downs Nature Reserve and Castlereagh Nature Reserve may experience noise impacts during construction, however these would be short term and minor in nature.



Construction would result in a short-term, minor impact on traffic on the local road network as discussed in section 7.1.2. This impact would be minimised through the implementation of mitigation measures listed in section 7.1.4.

It is unlikely that residents, users of local community facilities and recreational users of Windsor Downs Nature Reserve and Castlereagh Nature Reserve would experience any visual impacts from any construction activities.

Impact on local economy and employment

There are a number of positive economic benefits that may occur during the construction phase, including employment opportunities and income generation for local businesses.

It is expected that an average of 140 jobs would be created as part of the proposal, with a peak workforce of up to 250 people at key periods of construction

There is also the potential for construction workers to utilise local businesses such as food retail shops and service stations located just one kilometre away in the suburb of Bligh Park.

Potential procurement of goods and services, such as building materials, may also provide socio-economic benefits to local and regional businesses.

Summary of socio-economic impacts during construction

Construction impacts are summarised Table 7-17.

Table 7-17 Summary of social impacts during construction

Impact Who is impacted

Nature of impact

Type of impact

Duration of impact

Level of impact

Air quality, noise Inmates, visitors, staff

Negative Direct Temporary Minor

Visual amenity Inmates, visitors, staff


Safety for pedestrian within the JMCC during construction

Visitors and staff


Air quality, noise, amenity

Local residents, users of local communities and parks/ recreational areas

Negative Indirect Temporary Negligible

Economic benefit due to construction work

Construction workers in the area

Positive Direct Medium Negligible

Procurement of local goods and services for project construction

Local and regional businesses

Positive Indirect Medium Negligible




Nature of impact

Type of impact

Duration of impact

Level of impact

Economic benefit due to increase in people frequenting the area

Local businesses




The operational impact of the proposal on inmates, staff and visitors is generally expected to be a positive one.

The increase in the number of visitors may increase the demand for use of community facilities such as SHINE for Kids Child Care and Family Centre. Analysis on current use of this facility and potential increase in demand resulting from the proposal is not part of this REF.

Inmates, staff and visitors would experience neutral visual amenity impact resulting from new buildings and infrastructure. The proposal is located within an existing correctional complex and the new buildings would be consistent with the immediate surrounding environment.

The expansion of car park would result in a positive impact for staff and visitors of the DCC.


There is no potential visual amenity impact for nearby residents, users of local community facilities and surrounding parks and recreational areas, as the view into the proposed new buildings of the DCC is well screened from wider community by the existing DCC facilities as well as mature trees along The Northern Road.

Impacts on local economy and employment

The expansion of DCC has the potential to generate an additional 74 full time staff members, creating long term employment opportunities that may be available to both local residents and people outside the area. These would likely range across all job types including both professional and lower-skilled roles. This is considered a benefit for people from across Sydney, and potentially those in Western Sydney.

As a flow-on benefit resulting from an increase in staff at DCC, there may be an increase in income for local businesses and services in the surrounding area. Local shops and services may also benefit from increased numbers of visitors who are likely to visit the facility as a result of increased capacity of DCC. This could be a long-term minor benefit for local shops and services in the area.

External businesses that provide the centre with food and other supplies are also expected to benefit due to the need for additional goods and services.

Impact on wider community

The proposed development would have an overall positive benefit on the wider community by providing much needed relief for the already overcrowded correctional facilities within the metropolitan area and the associated high risk issues.

Summary of socio-economic impacts during operation

Operational impacts are summarised in Table 7-18.



Table 7-18 Summary of social impacts during operation


Nature of impact

Type of impact

Duration of impact

Level of impact

Additional capacity to meet additional demand of prison beds across the state

Regional CSNSW

Positive Direct Long-term Medium

Increased employment opportunity

Local residents and residents outside the local area

Positive Direct Long-term Minor

Increased spending in the local area due to additional staff and visitors

Local businesses

Positive Indirect Long term Minor

Procurement of goods and services for the operation of the proposal



Visual amenity due to new buildings and infrastructure

Inmates, visitors, staff

Neutral Direct Long term Negligible


Construction

Mitigation measures included in Sections 7.2, 7.7.3 and 7.1 would be implemented to minimise impacts on noise, air quality and transport.

A communication and stakeholder engagement strategy would be implemented to manage community and stakeholder concerns associated with construction. The strategy would communicate construction-related impacts would be managed, particularly relating security of the facility during construction.

A complaints management procedure would be prepared to allow members of the community to address any concerns during construction.

Notification regarding construction activities would be provided on site as well as on the CSNSW website, advising visitors of any alternative access arrangements in place and to exercise patience when visiting the DCC during construction works.

Operation

Ongoing communication and stakeholder engagement strategy would be maintained to establish a positive relationship with the local community.

A communication and stakeholder management strategy would be prepared to establish a positive image of the facility on the local community.



7.7 Other issues

7.7.1 Aboriginal heritage

A search of the OEH administered Aboriginal Heritage Information Management System (AHIMS) database returned no record for listed Aboriginal heritage sites within 200 metres of the proposal site.

Construction would not impact on any listed Aboriginal heritage items. Given the prior history of disturbance on site, the risk of encountering any unknown items is considered to be extremely low.

The following mitigation measures will be included in the CEMP:

An unexpected finds procedure would be prepared and included in the CEMP to define the actions to be taken in the event that any previously unidentified Aboriginal heritage/archaeological items are uncovered during construction works. This would include stopping work in the vicinity of the find, and seeking advice from a suitably qualified heritage consultant/archaeologist (and in consultation with the relevant division of OEH, as required). Works in the vicinity of the find would not re-commence until clearance has been received from the heritage consultant/archaeologist.

7.7.2 Non-Aboriginal heritage

A search was undertaken of the following statutory and non-statutory heritage registers to determine the presence of non-aboriginal heritage items in the vicinity of the site:

State Heritage Register and State Heritage Inventory

Penrith Local Environmental Plan 2010

National Heritage List

Commonwealth Heritage List

Australian Heritage Database (Register of the National Estate (RNE) – Non-statutory archive) and

Australian Heritage Places Inventory (Register of the National Estate – Non-statutory archive).

The nearest site with state significance is Castlereagh State Forest, situated between The Northern Road and Llandilo Road approximately 1.5 kilometres south of site. This site is listed in the Register of the National Estate. This same area also forms part of the Castlereagh Jewel Beetle Habitat and Movement Corridor, which is also listed in the Register of the National Estate.

The nearest site with local heritage significance is Berkshire Park Homestead Site, located on 844-848 Richmond Road approximately three kilometres south of site.

The DCC site is not located in a heritage conservation area and there are no items of heritage significance within or in the immediate vicinity of the site.

Given the distance to the site, construction would not impact on non-Aboriginal heritage items. During construction, finding of new heritage items is unlikely due to the previous disturbance on the site.


If potential unexpected non-Aboriginal objects or potential relics are located during works, the unexpected finds procedure would need to be implemented. This would include



notifying regulatory agencies and assessment by an archaeologist to recommend what further investigation or approvals are required.

7.7.3 Air quality

A search of the National Pollutant Inventory undertaken on 10 August 2018 identified six sources of pollution for the 2016/17 reporting period, in the postcode 2756. The following sources are closest to the proposal site:

South Windsor Sewage Treatment Plant, located about 3.2 kilometres east of the site.

Aanalee Rearing Farm, located about 4.6 kilometres north of the site.

Other contributors to air quality within the study area include emissions from motor vehicles on the surrounding road network.

There are no other known odour sources within close proximity to the site.

The nearest sensitive receivers to the DCC site include:

inmates and staff of, and visitors to, the DCC and other facilities within the JMCC

residents located in properties on The Northern Road, about 620 metres to the north-west of the proposal site, and properties within Bligh Park, about 1.25 kilometres north at the nearest points

Bligh Park Public School, on Alexander Street, about 1.4 kilometres north of the proposal site.

Air quality impacts associated with construction would mainly result from dust generated during excavation and the movement of construction machinery, vehicles and plant. Wind erosion of uncompacted surfaces, such as stockpiled material, could also cause localised emissions of dust.

Dust has the potential to impact on the amenity of surrounding sensitive receivers.

The operation of construction plant and equipment would also result in additional exhaust emissions in the area, however these impacts would be short-term and temporary.

Potential air quality impacts would be minimised by implementing the mitigation measures listed in below. With the implementation of these measures, potential air quality impacts during construction are unlikely to be significant:

A dust quality management sub-plan would be prepared and implemented as part of the CEMP. It would detail the measures to minimise the potential for air quality impacts, and would include the following measures as a minimum:

– All plant and machinery would be fitted with emission control devices complying with relevant Australian Standards.

– Machinery would be turned off when not in use and not left to idle for prolonged periods.

– Dust generation would be monitored visually, and where required, dust control measures such as water spraying would be implemented to control the generation of dust.

– Any waste (such as excavated spoil) produced on-site would be stored appropriately to reduce the production of dust.

– Materials transported to and from JMCC would be covered to reduce dust generation in transit.

– Access points would be inspected to determine whether sediment is being transferred to the surrounding road network. If required, sediment would be promptly removed from roads to minimise dust generation.



– Shade cloth would be fastened to the perimeter fence on the construction site to minimise dust transported from OMMPCC site during construction.

– Stabilisation of any excavated areas would occur as soon as practicable.

– Fixed hoses would be used to dampen exposed surfaces to minimise dust generation, where required.

7.7.4 Land use

The land where the DCC site is located is zoned SP2 – Correctional Centre.

Land uses immediately surrounding/adjoining the DCC site include:

staff car park to the north, beyond which is the visitors car park and further beyond is bushland vegetation

John Morony access road to the east, beyond which is the OMMPCC external business units

existing DCC facilities to the west and south.

Land uses immediately surrounding/adjoining the JMCC:

buhsland to the north, east and south of JMCC (zoned E2 – Environmental Conservation)

road infrastructure and rural residential properties to the.

There would be no changes to the zoning and function of the DCC site and its surroundings as a correctional facility during or following construction of the proposal.

While the land use would change from vacant land to an operational facility, the DCC proposal would be undertaken within land zoned SP2. All new facilities would be consistent with this land use zoning.

No mitigation measures are required.

7.7.5 Visual amenity

The visual landscape of the DCC site is dominated by corrective services facilities and associated infrastructure, adjoining road network, existing mature trees and other vegetation. Views to the DCC site are not visible from residents and road users outside the JMCC.

Construction plant and materials would be visible to visitors to DCC but would not to visible to the public outside the JMCC.

Overall, the potential visual impacts of construction activities are considered to be minimal and the works would be temporary and short term.

Once operational, the proposed new buildings would occupy currently vacant land. These features would be consistent in appearance and form to other facilities in the vicinity.

No significant visual impacts are predicted and therefore no mitigation measures are considered necessary.

7.7.6 Waste generation and management

Currently, wastes generated on site from the operational facility include domestic wastes such as: food scraps, aluminium cans, glass bottles, plastic etc.

Waste is collected and transferred from the inmate accommodation and other functional areas via supervised inmate labour, and transferred to the existing waste storage area. Waste is collected daily via an approved contractor.



Construction of the proposal has the potential to generate the following wastes:

general construction waste such as excess concrete, timber, paper, plastic and metal

buried tyres

domestic waste including food scraps, aluminium cans, glass bottles, plastic and paper containers, and putrescible waste generated by site construction personnel

surplus spoil from excavation activities (i.e. material not suitable for backfilling).

A construction waste management sub-plan would be prepared and implemented as part of the CEMP. It would detail the measures to manage waste during construction, and would include the following measures as a minimum:

All soil excavated from site would be tested and subsequently managed in accordance with the Waste Classification Guidelines (EPA, 2014). Only spoil which meets the specified classification would be used for on-site reuse.

All waste, including any uncovered tyres, is to be taken to a licensed waste disposal facility.

All spoil reused on site as engineered fill is to be clean (i.e. free of organics and inclusions greater than 75 millimetres size) and free of contaminant.

Waste (if unable to be reused or recycled) would be classified and disposed of in accordance with the Waste Classification Guidelines (EPA 2014).

Waste would be placed in skip bins positioned in defined area(s) onsite or within the site compound (if required).

Surplus construction materials would be avoided through appropriate planning of the construction works.

Waste would be recycled in accordance with the NSW Government’s Waste Reduction and Purchasing Policy.

Waste receptacles for recyclable and non-recyclable waste are to be provided at each construction site for waste generated by construction workers.

Smoking would be limited to defined areas and provide butt bins for construction workers.

The EPA would be notified immediately of any pollution incidents or harm to the environment as defined under Part 5.7 of the POEO Act.

There would be a small increase in operational waste associated with the increased number of inmates and staff and waste services would need to be increased accordingly. Waste management procedures for the proposal would be anticipated to be an extrapolation of existing services with consideration potentially given to include recyclable waste collection in the future.

7.7.7 Hazards and risk

Occupational health and safety

Accidental contact with, including the storage and handling of dangerous goods, contaminated soils and groundwater and any hazardous materials have the potential to affect the health and safety of site workers and the surrounding community. As mentioned in section 7.5.2, there is potential to encounter previously buried tyres or fragments of building rubble including asbestos containing materials during construction.

Exposure to asbestos containing materials could pose a health and safety risk to construction workers through ingestion, dermal contact or inhalation. The following measures are to be included in the CEMP:



If unexpected contamination is encountered during excavation, the contaminated material would be stockpiled separately and the Site Project Manager would be notified.

If asbestos containing material is found, the removal of this material would be undertaken by an appropriately licenced contractor as per WorkCover NSW requirements and current guidelines.

Any asbestos or tyres found at the site would be registered and notified using the EPA’s online tracking system, WasteLocate.

A work, health and safety management plan, and safe work method statements would be developed in accordance with regulatory requirements including the details of required personal protective equipment to be used by workers.

Safety and security

There is the potential for risks to pedestrians/public safety resulting from unauthorised access to construction work areas. NSW workplace safety laws require construction sites to have adequate site security, which includes appropriate fencing.

The following measures are to be included in the CEMP:

All construction work areas would be isolated from the general public.

The construction contractor would ensure that the construction site is secure at all times and take reasonable actions to prevent entry by unauthorised persons.

All construction staff would be screened and subject to criminal record checks prior to arrival at the site.

7.7.8 Services and utilities

Services diversions have been assessed as part of the early works REF (refer to section 1.5.3), This includes services identification and relocation; commencement of external services connections; and establishment of temporary services during construction.

Any additional utility adjustments and augmentation required would be undertaken in consultation with the requirements of the relevant utility owner. Any upgrade or replacement of services required outside the JMCC would be undertaken in accordance with relevant planning approvals and environmental management frameworks of the utility owners.

7.7.9 Sustainability

Specific sustainability initiatives for the proposed development have not yet been identified but would be confirmed during the subsequent detailed design stage. Specific initiatives that could be considered include:

installing energy efficient light fittings

reducing potable water consumption during construction

using treated non-potable water from the Sewerage Treatment Plant located within the JMCC wherever possible

installing water efficient fixtures and fittings

using drought resistant species in landscaping

recycling of construction and demolition waste (if any)

beneficial reuse of spoil that is not contaminated



specifying the responsible sourcing of construction materials, where possible, in the supply chain

consider opportunities for the employment of local tradespersons and businesses where possible.

In addition the following operational initiatives from the CSNSW Sustainability Policy would be encouraged:

CSNSW staff are encouraged to be actively involved in the development and implementation of policies and practices that contribute to achieving CSNSW environment management objectives

CSNSW regularly audits its performance and reports on progress related to its environmental objectives

7.7.10 Cumulative impacts

A search of the Department of Planning and Environment’s Major Development and the Penrith Council databases indicated that there are no major projects occurring in vicinity at the same time as this proposal. Works on the OMMPCC as described in this REF would occur at the same time. DoJ would coordinate the proposed works at DCC and OMMPCC to resolve any potential cumulative impacts should they occur.

Mitigation measures for the proposed works at DCC and OMMPCC as described in this REF would minimise any potential impacts of the proposal. No adverse cumulative impacts (as a result of the proposal being undertaken at the same time as another major project in the vicinity) are expected.

This project, along with others under the NSW Government’s Prison Bed Capacity Program, would lead to a cumulative increase in the capacity of the DoJ’s infrastructure in NSW which is consistent with the Government’s objectives for the program and respond to the recent sharp increase in demand.



8. Environmental assessment -Outer Metropolitan Multi Purpose Correctional Centre 8.1 Traffic, parking and access

This section provides a summary of the results of the traffic, transport and access assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix D. The methodology for the assessment is detailed in Appendix D.


The existing traffic conditions around the OMMPCC site are discussed in term of road network characteristics, performance and accessibility.

Road network characteristics

The Northern Road

The Northern Road functions as an arterial state road, running approximately southwest - northeast direction, connecting Richmond Road in the north to Great Western Highway in the south. It provides access to the OMMPCC site via a dedicated access road to the JMCC.

In the vicinity of the proposal site, the road has one travel lane in each direction with a divided carriageway. A turning lane is provided on approaches to JMCC from both directions. The sign posted speed limit is 80 kilometres per hour.

Richmond Road

Richmond Road functions as an arterial state road, located one kilometre north of JMCC, providing northwest - southeast access from Blacktown Road in the north to Blacktown township in the south. Richmond Road intersects The Northern Road at a roundabout to the north of JMCC.

Richmond Road is characterised by one traffic lane in each direction with a divided carriageway. The sign posted speed limit is 80 kilometres per hour.

Blacktown Road

Blacktown Road functions as an arterial state road, connecting Richmond township in the north to Richmond Road and Northern Road to the south. It provides access to JMCC through The Northern Road via JMCC access road.

Blacktown Road is characterised by one traffic lane in each direction with a divided carriageway. The sign posted speed limit is 80 kilometres per hour.

The surrounding road network is shown in Figure 8-1.



Figure 8-1 Surrounding road network

Source: Transport for NSW maps (Modified by GHD)

Road network performance

Road network performance was assessed by estimating the traffic volumes over a two day period at the following intersection as illustrated in Figure 8-2:

The Northern Road/JMCC site access road.

Traffic volumes were measured during the following periods:

Weekday AM peak (3 hours): 6.30 am to 9.30 am (Thursday 14 June 2018)

Weekday PM peak (3 hours): 4 pm to 7 pm (Thursday 14 June 2018)

Saturday peak (3 hours): 11 am to 2 pm (Saturday 16 June 2018).



Figure 8-2 Intersections traffic surveys locations

Source: Google maps 2018 (Modified by GHD)

The traffic surveys indicated the following peak hour periods along The Northern Road:

Weekday AM peak hour: 7.15 am to 8.15 am

Weekday PM peak hour: 4 pm to 5 pm

Saturday peak hour: 11.15 am to 12.15 pm.

Traffic volumes during peak hour were compared against typical nominal average annual daily traffic volumes for various classes of roads developed by Roads and Maritime.

The survey results indicated that the peak hour traffic volumes generally fall within the criteria for the relevant classification. Full results of the survey are provided in Appendix D and a summary of the results is given below:

The Northern Road northbound traffic volumes are 688 vehicles per hour at morning weekday peak hour, 564 vehicles per hour at evening peak hour and 579 vehicles per hour during Saturday peak hour

The Northern Road southbound traffic volumes are 671 vehicles per hour at morning peak hour, 640 vehicles per hour at evening peak hour and 623 vehicles per hour during Saturday peak hour

Recorded traffic volumes on The Northern Road is well within the Roads and Maritime criteria for arterial roads of 1,500-5,600 vehicles per hour at peak hour.

Heavy vehicles percentages on The Northern Road are 10% of total traffic volume at morning peak hour, 10% at evening peak hour and 5% during Saturday peak hour.



Traffic characteristics and intersection performance

The performance of the existing road network is largely dependent on the operating performance of key intersections, which are critical capacity control points on the road network. SIDRA intersection modelling software was used to assess the proposed peak hour operating performance of intersections on the surrounding road network.

The criteria in Table 8-1 were used to evaluate the operational performance of intersections (RTA, 2002).

Table 8-1 Level of service criteria for intersections

Level of Service

Average delay (seconds per vehicle)

Traffic signals, roundabouts Give way and stop signs

A < 14 Good operation Good operation B 15 to 28 Good with acceptable delays &

spare capacity Acceptable delays & spare capacity

C 29 to 42 Satisfactory Satisfactory, but accident study required

D 43 to 56 Operating near capacity Near capacity & accident study required

E 57 to 70 At capacity; at signals, incidents will cause excessive delays Roundabouts require other control modes

At capacity, requires other control mode

F > 70 Over Capacity Unstable operation

Over Capacity Unstable operation

Source: Guide to Traffic Generating Developments (RTA, 2002)

Base 2018 traffic models were developed using the morning and evening weekday and weekend peak hour surveyed data results. Existing traffic flows were analysed using SIDRA7 to obtain the current traffic flow conditions at the intersection of The Northern Road/JMCC access road.

The results of SIDRA modelling is shown in Table 8-2.

Table 8-2 Existing intersection performance

Site Peak scenario Average Delay (s)


The Northern Road / JMCC site access road

Weekday AM 16.5 B Giveway/Yield 0.021

Weekday PM 12.5 A Giveway/Yield 0.005

Weekend 12.0 A Giveway/Yield 0.063




The traffic analysis indicated that each of the analysed intersections currently have an acceptable Level of Service (i.e. Level of Service D or better) with spare capacity in both the weekday morning and evening peak periods as well as during the weekend period.



Site access

The main access to the OMMPCC site is via the JMCC site access road, off The Northern Road. The boom gate and external perimeter security are maintained by a contracted security company and are staffed on Saturday, Sunday, Monday and public holidays between 6 am and 6 pm.

According to the traffic analysis utilising SIDRA, the Level of Service of this intersection is at good operation (Level B during morning peak period and Level A during evening peak period and peak hour weekends).

Parking

There are seven areas for visitors and staff parking throughout the JMCC as shown in Figure 8-3.

Figure 8-3 Existing parking locations

Source: Google Maps (Modified by GHD)

A breakdown of the existing parking provision is given in Table 8-3 below.

Table 8-3 On-site parking provision

Area Type Provision DCC

1 Visitor Designated parking bays: 94 Informal parking: Peak occupancy 1 vehicle

2 Staff Designated parking bays: 38



Area Type Provision OMMPCC

3 Visitor Designated parking bays: 108 4 Staff Designated parking bays: 47

Other 5 Brookfield Global

Integrated Solutions Designated parking bays: 67



In total, there are 530 designated parking spaces within the JMCC. Parking utilisation surveys were undertaken on Thursday 14 June 2018 and Saturday 16 June 2018.

The surveys indicated that close to half of the available OMMPCC’s visitor parking capacity is reached and staff parking capacity is nearing capacity during the weekdays. Parking is generally available during weekend periods, with 32 percentage occupancy in the visitors area and 77 percentage occupancy in the staff area.

Overall, weekend parking utilisation was lower in comparison to weekdays. Parking utilisation of staff is consistently higher than that of the visitors’.

Crash data review

Crash data for roads within the vicinity of JMCC was obtained from Transport for NSW Centre for Road Safety website. There is no evidence of recorded crashes in the proximity of the site within a five-year period (2013-2017).

Public and active transport

Public transport options considered in the assessment include bus and train and active transport include bicycle riding and walking.

Bus stops are located adjacent to the northern boundary of JMCC along The Northern Road at its intersection with the JMCC access road (approximately 400 metres from the site). Bus services covering the proposal area include routes 673 and 674. Route maps and indicative timetable are included in section 2.8.1 of Appendix D.

The nearest train station to the site is Windsor Station, located about six kilometres from the site. Whilst this distance is further than the generally acceptable walking distance of two kilometres, the station is connected to the site by bus.

On road cycleways are available along The Northern Road within the road shoulders, as well as on Richmond Road and Blacktown Road. However, the on-road environment has been classified as a high difficulty cycling path.

A footpath is provided along the western side of The Northern Road, at 100 metres distance approaching the Richmond Road/The Northern Road intersection. Pedestrian footpaths are available along eastern and western sides of Richmond Road approaching the Richmond Road/The Northern Road intersection. Footpaths are located along both sides of Blacktown Road.



Construction traffic movements would primarily be associated with the transportation of construction machinery, building materials, staff and equipment to and from the site.



Initial estimates for construction vehicle movements to the OMMPCC site would involve a peak daily maximum of up to 50 (two way) heavy vehicle movements spread throughout the day and up to 40 (two way) light vehicle movements associated with construction personnel during the morning and evening peak periods to and from the site. A breakdown of the expected construction traffic movements is provided in Table 8-4.

Table 8-4 OMMPCC estimation of construction vehicle movement

Vehicle type Activity Daily vehicle numbers

Movements per hour

Peak workforce

Heavy vehicles Haulage and delivery trucks 50 5^

Light vehicles Cars and utilities ** 40 20*

(*) assume 20 staff arrival or depart in the one peak hour and all staff travel by individual private transport

(**) Associated with construction staff arrival and departure

(^) Assumed 10% of the daily traffic flow

It is anticipated that the majority of traffic movements associated with the proposal would be undertaken during standard construction hours. However, there may be a need for limited vehicle movements outside of standard construction hours for the delivery of any oversized equipment required to be transported during hours/times as specified by Roads and Maritime and NSW Police. These deliveries would be undertaken in accordance with the requirements of relevant authorities.

SIDRA modelling was undertaken to assess the performance of The Northern Road/JMCC site access road intersection during the construction stage at weekday morning, weekday evening and weekend peak hours and shown in Table 8-5 below. The assessment was based on the following assumptions:

Construction activities at DCC and OMMPCC taking place concurrently.

Heavy vehicles associated with construction would generate left in and right out arrangement. Those arriving from the northeast direction would turn left into JMCC site access road and those arriving from the southwest direction would utilise the roundabout at the intersection of The Northern Road and Richmond Road.

Light vehicles would arrive and depart from the OMMPCC site following the same pattern as the surveyed traffic distribution.

Table 8-5 Intersection performance during construction

Site Peak scenario

Average Delay (s)

LoS Control Type



Weekday AM


0.030

Weekday PM

81.6 F Giveway / Yield

0.990

Weekend 15.8 B Giveway / Yield

0.144



most critical movement.



• The degree of saturation is defined as the ratio of the arrival flow (demand) to the capacity of each approach. • The average delay is given in seconds per vehicle.

The SIDRA modelling results shown in Table 8-5 indicate that The Northern Road/JMCC site access road intersection is expected to have an acceptable Level of Service (i.e. Level of Service D or better) during the construction traffic scenario with spare capacity in both the weekday morning and weekend peak periods.

During the weekday evening peak period, the intersection is operating with spare capacity, except for the right hand turning movement onto The Northern Road. This reduced level of service is as a result of the increase delays of vehicles exiting JMCC site access road, potentially arising from staff ending their shifts during this time.

Construction workforce parking and transport

The parking for the construction workforce of the OMMPCC site is shown in Figure 8-4.

Construction personnel car parking is designated to be north of OMMPCC site in the area clear of vegetation (Area C). It is noted in the Traffic Management Plan Outer Metropolitan Multi-Purpose Correctional Centre Repurposing Project (Hansen Yuncken 2018) that these additional construction vehicle parking spaces would be constructed as a priority to prevent reduction to the number of parking spaces during construction. It is noted this document identifies that 60 construction car parking spaces in total across the four stages of construction would be made available to facilitate the construction parking provision.

Construction parking is not anticipated to result in the loss of any of the parking spaces for visitors or staff to the OMMPCC.

Figure 8-4 Potential workforce parking locations

Source: SIX Maps (Modified by GHD)

Pedestrian movements and access

Construction activities are not anticipated to impact on pedestrian access to and from the JMCC.

There is a potential impact on pedestrians and cyclists on the east side of The Northern Road due to vehicle entry and exit via the JMCC main gate. There is also potential impact on the



movement of pedestrians and cyclists within the JMCC These impacts would be minimised through the implementation of mitigation measures listed in section 8.1.4.

Public transport

Construction activities would not impact on public transport operations.

No impacts are anticipated on access to and from the bus stops on The Northern Road.



Operational impacts of the proposal would be characterised by an increase in the number of staff and visitors coming to the OMMPCC site. The traffic assessment (Appendix D) was based on the following assumptions:

The existing shift patterns for OMMPCC would remain unchanged following completion of the proposal.

It is assumed the peak increase in staff would coincide with the largest existing shift demand and that all staff travel individually by private transport (car).

Additional staff would arrive and depart at the JMCC individually by private vehicles.

Traffic distributions in relation to arrivals and departures are assumed to be consistent with the traffic results undertaken as part of this REF.

It is estimated that an additional 18 staff would be required during peak periods.

No increase in visitor numbers to the OMMPCC is expected as there is no increase in the inmate population and no changes are proposed for the existing scheduled visitation periods.

SIDRA modelling was undertaken at The Northern Road/JMCC site access road intersection at weekday morning, weekday evening and weekend peak hours and the results are shown in Table 8-6.

Table 8-6 Intersection performance post-development

Site Peak scenario

Average Delay (s)

LoS Control Type



Weekday AM


0.027

Weekday PM

12.8 A Giveway / Yield

0.364

Weekend 12.6 A Giveway / Yield

0.017




Table 8-6 indicates that The Northern Road/JMCC site access road intersection is expected to operate with an acceptable Level of Service (i.e. Level of Service D or better) with spare capacity in both the weekend, weekday morning and evening peak periods post development.



Post-development parking

The existing parking spaces for both staff and visitors at OMMPCC car parks are a total of 155, located within Area 3 and Area 4 shown in Figure 8-3 and Table 8-3.

The parking analysis provided in Section 4.1.2 of Appendix D estimated that parking demand post-development would be of a total of 137, incorporating additional demand due to increase in staff numbers of 18 spaces and a 20% buffer.

The proposed car park reconfiguration would include 153 parking spaces, which would satisfactorily accommodate the post-development parking demand for OMMPCC.

Post development boom gate operation

A security boom gate is located approximately 140 metres southeast of The Northern Road / JMCC site access road and is typically operational on Saturdays, Sundays and Mondays. No evidence has been provided relating to the security procedure and boom gate operations, however the traffic intersection survey did not identify vehicle queues at the boom gate impacting The Northern Road/JMCC site access road intersection operation.

Based upon the anticipated additional inbound traffic volumes, it is not anticipated the additional traffic flow would result in variation to the current boom gate/security procedure operation and potential vehicles queue, subject to the security procedures are carried out within nominally one minute periods.


Construction

A Construction Traffic Management Plan (CTMP) be prepared for OMMPCC prior to the commencement of works with site induction for construction personnel being undertaken to outline the requirements of the CTMP. It would detail the management measures to be implemented to minimise the potential for impacts on the operation of the surrounding road and transport environment. It would include the following information and management measures as a minimum:

A Traffic Control Plan (TCP) would be developed in accordance with RMS Traffic Control at Works Sites (RTA, 2010)

Hours of operation, heavy vehicle volumes (numbers) and routes, loading/unloading areas and site access and security arrangements, temporary warning, guidance and information signage, and appropriate traffic control devices.

Vehicles would be permitted to travel past the work site with traffic signage in accordance with the TCP.

Construction vehicle movements would be minimised during the AM and PM peak hour and during the middle of the day on the weekend, when higher traffic volumes occur within the road network.

Construction vehicles are to arrive JMCC from the northeast from The Northern Road.

Construction vehicles are to exit JMCC to the left to avoid delays at The Northern Road/JMCC site access road intersection, particularly during the weekday evening peak hour.

Site access is be restricted to authorised personnel only and existing employees on site.

Construction vehicles would be parked within areas designated for construction parking only.



Pedestrian access to and around construction areas would be maintained at all times.

Specific road hazards would be identified, including but not limited to wet weather, pedestrian and bicycle riders, general traffic and bus infrastructure.

The timing of deliveries accessing JMCC would be programmed to ensure there is sufficient space within the complex to accommodate deliveries, and there is minimal potential for impacts to operation of all the facilities in JMCC.

Designated queuing and idling areas would be determined near JMCC to minimise disruption to the local community.

Adequate sight lines would be provided to allow for safe entry and exit from the site.

All roads would be kept clean and free of dust and mud at all times. Where material is tracked onto sealed roads at any time, it would be removed immediately so that road pavements are kept safe and trafficable.

Any roads, kerbs, gutters and footpaths damaged as a result of construction would be restored to their pre-construction condition.

All traffic would comply with all applicable traffic laws and regulations including speed limits.

All roads and accesses would be rehabilitated post construction to a standard equivalent to, or better than, the preconstruction condition.

Community notification on any proposed changes to road and pedestrian network.

Operation

Monitoring should be undertaken of the overall parking area to ensure suitable allocation has been provided for both staff and visitors

Consideration would be given to the development of a Transport Access Guide (TAG) summarising alternate transport options for staff and visitors to access the JMCC

8.2 Noise and vibration

This section provides a summary of the results of the noise and vibration assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix E. The methodology for the assessment is described in section 1.3 of Appendix E.


Sensitive receivers

Noise and vibration sensitive receivers include residences, medical centres, educational institutes, hospitals, places of worship, recreational areas and commercial/industrial premises.

The nearest sensitive noise and vibration receivers are located to the north of the Northern Road within land zoned RU4 (Primary Production Small Lots).

Two noise catchment areas have been identified within this zone:

Noise Catchment Area 1 (NCA1) - encompassing residences within 100 metres of The Northern Road, Richmond Road and Blacktown Road within 800 metres radius of the site. There are 32 receivers within NCA1.

Noise Catchment Area 2 (NCA2) - encompassing all other residences within 800 metres from the site. There are 63 receivers within NCA2.

In addition to these, there are four commercial properties within 800 metres radius of the site.



Existing noise environment

Average background and ambient noise levels were determined by conducting noise monitoring over a period of nine days between 24 July and 1 August 2018 at two locations. The locations of the noise catchment areas and monitoring points are shown in Figure 7-5 (section 7.2).

A summary of the measured noise levels at monitoring locations M1 and M2 is shown in Table 8-7.



Table 8-7 Average background and ambient noise levels

Location of noise logger Rating background level (dB(A)), 90th percentile LA90(15min)

Ambient noise levels (dB(A)), LAeq(period)

Road traffic noise level LAeq(period)

Day Evening

Night Day Evening Night Day Night

M1 – Front yard of 77 The Northern Road (35 metres from road edge)

47 42 32 58 54 54 57 53

M2 – 122 Bennet Road 38 36 30 52 51 47 N/A N/A

8.2.2 Noise and vibration criteria

Noise and vibration compliance criteria for the proposal were established in accordance with the relevant guidelines. Information on how the criteria were derived is provided in sections 3.1 and 3.2 of Appendix E. The following section provides a summary of these criteria.

Construction noise criteria

A summary of construction noise management levels specific for the proposal is shown in Table 8-8.

Table 8-8 Construction noise management levels

Receiver type

Construction noise management levels, LAeq(15 min)

Recommended standard hours

Outside recommended standard hours

Noise affected

Highly noise affected

Day (OOHW1)

Evening (OOHW2)

Night (OOHW3)



Commercial 70 (external) Notes: 1) OOHW1 refers to the outside of standard hours work during the day period (Saturday 1 pm – 6 pm, Sundays and public holidays 8 am – 6 pm) 2) OOHW2 refers to the out of standard hours work during the evening period (6 pm to 10 pm) 3) OOHW3 refers to the out of standard hours work during the night period (10 pm to 7 am Monday to Friday, 10 pm to 8 am Saturdays, Sundays and public holidays)

Construction vibration criteria

Construction vibration criteria were established for human comfort as well as for structural damage. The degrees of perception for humans are suggested by the vibration level categories given in BS 5228.2 – 2009, Code of Practice for noise and vibration on construction and open sites – Part 2: Vibration, as follows:

Vibration level 0.14 mm/s - vibration might be just perceptible in the most sensitive situations for most vibration frequencies associated with construction

Vibration level 0.3 mm/s – vibration might just be perceptible in residential environments

Vibration level 1.0 mm/s – it is likely that vibration at this level in residential environments would cause complaints, but can be tolerated if prior warning and explanation has been given to residents

Vibration level 10 mm/s - vibration is likely to be intolerable for any more than a very brief exposure.



Two guidelines were applied to establish vibration criteria for the proposal: DIN 4150-3 Structural vibration – effects of vibration on structures (1999) and BS 7385-2:1993 - Evaluation and measurement for vibration in buildings: Guide to damage levels from groundborne vibration. The guideline values are shown in Table 8-9 and Table 8-10.

Table 8-9 Guideline values for short term vibration on structures (DIN4150-3)

Line Type of structure

Guideline values for velocity, (mm/s) 1 Hz to 10 Hz

10 Hz to 50 Hz

50 Hz to 100 Hz1

1 Buildings used for commercial purposes, industrial buildings, and buildings of similar design 20 20 to 40 40 to 50

2 Dwellings and buildings of similar design and/or occupancy 5 5 to 15 15 to 20

3

Structures that, because of their particular sensitivity to vibration, cannot be classified under lines 1 and 2 and are of great intrinsic value (for example listed buildings under preservation order)

3 3 to 8 8 to 10

Table 8-10 Guideline values –for transient vibration resulting in minimal risk of cosmetic damage (BS 7385-2)

Type of building Peak particle velocity in frequency range of predominant pulse

4 Hz to 15 Hz 15 Hz and above Reinforced or framed structures. Industrial and heavy commercial buildings

50 mm/s at 4 Hz and above 50 mm/s at 4 Hz and above

Unreinforced or light framed structures. Residential or light commercial type buildings

15 mm/s at 4 Hz increasing to 20 mm/s at 15 Hz

20 mm/s at 15 Hz increasing to 50 mm/s at 40 Hz and above.

Vibration buffer distances were sourced from the Construction Noise and Vibration Guidelines (Roads and Maritime, 2016) for cosmetic damage (standard structures) and human response. Safe working distances for various types of receivers from machinery that would be used in the proposal are shown in Table 8-11.

Table 8-11 Minimum safe working distances (Roads and Maritime, 2016)

Equipment Approximate size/weight

Minimum working distances

Human Response (OE&H Vibration Guideline)

Minimum Distance – Cosmetic Damage (BS 7385)

Vibratory roller 4-6 tonne 40 m 12 m



Small hydraulic hammer 300 kg (5 - 12 tonne) 7 m 2 m

Medium hydraulic hammer 900 kg (12 – 18 tonne) 23 m 7 m

Large hydraulic hammer 1600 kg (18-34 tonne) 73 m 22 m

Piling rig 12 tonne down force 50 m 15 m



Operational noise criteria

The Noise Policy for Industry (EPA, 2017) was used to establish operational noise criteria for the proposal. Operational noise levels are distinguished between intrusiveness noise and amenity noise. The intrusiveness noise level refers to the relative audibility of operational noise compared to the background level at residential receivers. The amenity noise level refers to the total level of extraneous noise for all receiver types. The intrusiveness noise level is assessed over a 15 minute period, while the amenity noise level is assessed over the day, evening or night time period. The lower of the two is set as the project noise trigger level, which was used to assess the impact of the proposal. The operational noise trigger levels for residential and non-residential receivers are shown in Table 8-12 and Table 8-13 respectively.

Table 8-12 Operational noise trigger levels for residential receivers

Noise trigger levels LAeq(15min) Residential Receivers2

Day1 Evening1 Night1

Intrusiveness noise level at M1 (NCA1) 52 47 37

Intrusiveness noise level at M2 (NCA2) 43 41 35 Project amenity noise level (rural residential – NCA1 & NCA 2) 48 43 38

Project noise trigger levels (NCA1) 48 43 37

Project noise trigger levels (NCA2) 43 41 35 Notes: 1) The NPI defines Day as 7 am to 6 pm Monday to Friday and 8 am to 1 pm Sunday and Public Holidays, Evening 6 pm to 10 pm and Night as the remaining periods.

2) Noise from the construction site is to be measured at the most affected point within the residential boundary.

Table 8-13 Noise trigger levels – non-residential receivers

Receiver Non-residential receivers Time of day LAeq, dBA

Commercial premises When in use 65 (external)

Road traffic noise

The Road Noise Policy (DECCW 2011) provides traffic noise criteria for sensitive receivers in the vicinity of existing roads (Table 8-14). The criteria are applied to traffic on public roads to identify potential road traffic impacts and the requirement for reasonable and feasible mitigation measures.

If road traffic noise increases during operation and construction work is within 2 dBA of current levels then the objectives of the Road Noise Policy (DECCW 2011) are met and no specific mitigation measures are required.

Table 8-14 Road traffic noise criteria

Type of development Day

7 am to 10 pm Night

10 pm to 7 am

Existing residence affected by additional traffic on existing arterial roads generated by land use developments

60 LAeq(15 hr) 55 LAeq(9 hr)




Noise

Construction would require the use of heavy machinery, which would generate noise and vibration levels at nearby receivers. At any location, the potential impacts may vary greatly depending on factors such as the proximity of sensitive receivers, the duration of works, the magnitude of the noise levels, the time at which the construction is undertaken, and the character of the noise or vibration emissions.

For the purpose of the noise assessment, construction works are summarised into nine construction scenarios over three stages and are described in Table 8-15. It should be noted that construction scenarios 1 to 5) have been considered as part of the early works REF (refer to section 1.5.3) and do not form part of this assessment.

Table 8-15 Construction scenarios


Description of works Plant and equipment to be used


Stage 1

CS01 Compound site establishment

Early works

CS02 Works on the main visitor’s car park

Early works

CS03 Construct security fencing Early works

CS04 Cut new entrance into perimeter

Early works

Stage 2

CS05 Builder’s compound site establishment

Early works

CS06 replace Main Switchboard and substation

construct new accommodation buildings (3 x 48 cells)

construct 5 new segregation cells

modify existing site services

commence work on new gatehouse

commission and handover

excavator, bulldozer, concrete pump, grader, vibrating roller, truck, concrete truck, and hand tools

114 dBA

CS07 New perimeter fence between gatehouse and existing perimeter fence

a crane, scissor/boom lift, manitou, truck, hand tools, and welder

111 dBA

CS08 Construct security fences




Description of works Plant and equipment to be used


Stage 3

construct new reception building

demolish existing accommodation cottages (4 buildings)

construct new cell accommodation buildings (2 x 48 cell)

decommission and demolish redundant substation and associated equipment

commission and handover

CS09 Remove redundant temporary security fencing

complete sally port modifications

complete external works landscaping and

commission and handover.

Plant and equipment to be used include a crane, scissor/boom lift, manitou and hand tools.

110 dBA

The majority of the works would be undertaken during standard construction hours. In addition, construction works are also proposed during out-of-standard hours (Saturday 7 am to 8 am and 1 pm to 3 pm).

Noise levels have been predicted using computer modelling software based on the above construction scenarios and assumed list of likely plant and equipment to be used. The predicted noise levels are generally considered conservative as the construction noise model predicts the worst-case 15 minute scenario and these levels are highly unlikely to represent the actual noise emission experienced by the community throughout the entire construction period (if at all).

A summary of the number of exceedances (NoE) of the relevant noise management levels for each construction scenario (CS) is provided in Table 8-16, along with the relevant noise management level (NML) and highest noise level (HNL) at a receiver. The predicted noise level is a maximum noise level from the shortest distance between the receiver and the closest construction activity.

Table 8-16 Summary of construction noise predictions

Receiver CS06 CS07 CS08 CS09

Standard construction hours

NCA1 (NML 57 dBA)

NoE1 0 0 0 0

HNL2 44 42 44 39



NCA2 (NML 48 dBA)

NoE1 0 0 0 0

HNL2 41 39 42 37

Commercial (NML 70 dBA)l

NoE1 0 0 0 0

HNL2 42 40 42 35

Outside of standard hours - Saturdays

NCA1 (NML 52 dBA)

NoE1 0 0 0 0

NCA2 (NML 43 dBA)

HNL2 0 0 0 0

Notes:

1) NoE refers to Number of Exceedances

2) HNL refers to Highest Noise Level

Noise impacts during recommended standard working hours

The results of modelling indicate that no exceedances of noise management levels are predicted at any residential and commercial receivers for all construction scenarios during standard working hours.

Out of hours work

The results of modelling indicate that no exceedances of noise management levels are predicted at any residential and commercial receivers for all construction scenarios outside standard working hours.

Construction traffic impacts

In accordance with the Road Noise Policy (DECCW, 2011), construction traffic noise is considered to be acceptable when it is within 2 dBA of the existing noise levels.

Peak construction noise levels are assessed at residences fronting either The Northern Road, Blacktown Road, Richmond Road or George Street. It is predicted that the additional vehicle movements associated with construction are not significant enough to increase the existing noise levels on the construction route roads by 2 dBA. As a result, no significant noise impacts resulting from construction traffic are anticipated.

Vibration

Impacts to sensitive receivers

The closest sensitive receiver to the OMMPCC construction works is greater than 150 metres away. No structural damage vibration impacts are expected at sensitive receiver locations as construction activities are not expected to occur within the structural damage buffer distances.

No sensitive receivers are located within 100 metres of any of the proposed construction works and as such no human comfort or structural damage impacts are expected.


Operational noise has been assessed and includes the following noise sources within the site:

the use of outdoor recreational areas during the day



the use of the parking lots within the OMMPCC site during the day (assumed to be 20% capacity during evening/night)

the use of delivery trucks and inmate transport vehicles (assumed to be 20 heavy vehicle movements per day through main entrance)

the use external generators and substations.

The following noise sources have not been included with the assessment as the noise levels are predicted to be negligible at all sensitive receiver locations:

use of the PA system within internal areas – PA systems are located internally within the buildings/modules are predicted to be inaudible at all sensitive receiver locations

existing and proposed internal mechanical plant - noise emission from existing and proposed mechanical plant is assumed to be negligible at sensitive receivers. This is due to the fact that the existing and proposed mechanical plant is located within internal plant rooms within buildings that are over 400 metres from the nearest residents. As such, noise emission from mechanical plant would be negligible at all sensitive receivers.

The predicted operational noise levels are anticipated to comply with the noise criteria for all assessed scenarios. The predicted operational noise levels would comply with the noise emission requirements of the NPI and would not adversely affect the acoustic amenity of the neighbouring residents. The majority of operational activities are expected to occur during the day or evening period, and therefore sleep disturbance impacts are not anticipated.

The predicted noise levels indicate that the operational traffic associated with the OMMPCC proposal would not increase road traffic noise levels by more than 1 dBA at the most affected receiver.


Construction

The following noise and vibration mitigation measures will be implemented throughout the construction phase of the proposal.

Noise

Working hours

– Noise generating construction activities should be undertaken in accordance within the assessed hour, being: 7 am – 6 pm Monday to Friday; 7 am – 3 pm Saturdays; and no work on Sundays or Public Holidays.

– Work outside normal hours should only comprise: the delivery of materials outside normal hours requested by police or other authorities for safety reasons; and emergency work to avoid the loss of lives and/or property.

– A noise and vibration management sub-plan would be prepared and implemented as part of the CEMP. This would include permissible construction hours, management of construction traffic, a response for noise complaints (including a noise monitoring program if required), the noise and vibration criteria at sensitive receivers and mitigation measures.

Site inductions

– Inductions for the work crew would include the specific noise issues and mitigation measures required for the site. The induction would include:

all relevant standard noise mitigation measures



relevant licence and approval conditions

permissible hours of work

location of any sensitive receivers that may exceed the construction noise management level

construction employee parking areas

designated loading/ unloading areas and procedures

site opening/closing times (including deliveries)

behavioural practices that minimise noise

avoiding dropping materials from height and avoiding metal to metal contact of materials.

The distance between plant and equipment and any sensitive receiver should be maximised where practicable.

Vehicles, plant and equipment would be regularly maintained and kept in good operating condition. Machines found to produce excessive noise should be removed from construction site or stood down until repairs or modifications can be made.

Plant should be turned off when not in use. For example, trucks should not be left idling if not operational.

Noise emitting plant to be directed away from sensitive receivers where possible. Plan worksites and activities to minimise noise emission.

Plan traffic flow, parking and loading areas to minimise reversing movements within the site.

Ensure deliveries occur during standard construction hours, where possible.

Where possible, use structures to shield residential receivers from noise within the construction site.

Community relations

Consultation and cooperation with the nearest sensitive receivers will assist in minimising uncertainty, misconceptions and adverse reactions to noise. The following community relation measures would be implemented:

– Department of Justice would establish contact with residents affected by construction noise and communicate the construction program and progress on a regular basis, particularly when noise generating activities are planned. Communication with the local community would be maintained throughout the construction period.

– Department of Justice would provide a community liaison phone number and permanent site contact so that noise complaints can be received and addressed in a timely manner.

– Upon receipt of a noise complaint, monitoring would be undertaken and reported as soon as possible. If exceedances are detected, the situation would be reviewed in order to identify means to attempt to reduce the impact to acceptable levels.

Operation

Any complaints associated with the operation of the upgraded facility would be investigated as soon as practicable.



The following noise and vibration mitigation measures will be implemented during the operational phase of the proposal to protect the acoustic amenity of the nearest sensitive receivers.

Noise

Outdoor field and recreational areas

– Ensure use of outdoor areas is scheduled within the day time period only.

– Minimise shouting or other loud noises from inmates or staff while outdoors.

– Avoid slamming doors and gates.

– No music should be played in outdoor areas.

Public announcement (PA) system

– Minimise usage of PA system and only use when necessary for announcements.

– Volume should be adjusted to a suitable level.

– Do not use the PA system to broadcast music.

– If any PA systems are proposed within the outdoor field and recreational areas, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the PA systems does not exceed the relevant noise criteria.

Mechanical plant

– If any large mechanical plant is proposed externally, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the units do not exceed the relevant noise criteria.

8.3 Biodiversity

This section provides a summary of the results of the arboricultural and ecological assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix F. The methodology for the assessment is described in section 3 of Appendix F.


The site is located on the Cumberland Plain approximately 4 km to the south of the Hawkesbury River. Windsor Downs Nature Reserve is located to the north-east and there are extensive patches of native vegetation to the south, within the Castlereagh Landfill Depot and the Castlereagh Nature Reserve. The vegetation which occurs to the north of the subject site has been mapped as Shale/Gravel Transition Forest and the vegetation to the north-east, east and south has been mapped as Castlereagh Scribbly Gum Woodland. Both vegetation types are Threatened Ecological Communities listed under the BC Act and EPBC Act.

The subject site includes several areas of grassed open-space, including the proposed OMMPCC, construction compound sites, as well as infrastructure associated with the complexes, including car parks, structures, sealed roads and formed paths.

The proposed OMMPCC APZ would modify the disturbed edge of an extensive area of Castlereagh Scribbly Gum Woodland that extends to the east, north and south of the site. Apart from within these patches of edge vegetation, there is an absence of shrubs and mid-storey in the proposal sites and the groundcover consists of closely mown exotic lawn-grass.

Flora

Vegetation on the OMMPCC site consists of closely mown grasses with planted trees. A total of 44 trees, or tree groups, are growing within the complex and shown on Figure 8-5. It is likely



that all trees on the site were planted at the same time – probably in 2000 or 2001, after completion of construction of the complex. The most common tree species are Forest Red Gum (Eucalyptus tereticornis) and Swamp Oak (Casuarina glauca), both species which are indigenous to the Penrith LGA. The trees have been planted either in lines, adjacent to pathways, or in small groups, adjacent to buildings. Shrubs are uncommon and are mostly restricted to formed garden beds. As a result of regular maintenance, weeds are uncommon and no Priority Weed species were recorded.

Surveyed trees are described in further detail in the Tree Schedule in Appendix C of Appendix F.

The car park roundabout near the gatehouse has a formal planting of low hedging with one central feature tree, a Bangalow Palm (Archontophoenix cunninghamiana). Specimens of Sago Palm (Cycas revoluta) occur around the outer section of the garden bed.

The site of the proposed OMMPCC construction compound is level to very gently inclined and has a sparse groundcover of mostly exotic grass and forb species, which is heavily grazed by grey kangaroos and rabbits. Common species include Axonopus fissifolius, Paspalum dilatatum, Sida rhombifolia, Hypochaeris radicata and Solanum sisymbriifolium. No trees or shrubs occur on the site.

Scattered trees, varying in age, size and species occur across an otherwise cleared area to the north-west of the carpark. These trees are included in the arboricultural assessment for OMMPCC because at least five specimens are located close to the edge of seal, on a tight turning curve and therefore may be affected if road widening is proposed

Proposed APZ area

An area to the south east of the OMMPCC site has been earmarked to be maintained as an APZ (refer to section 8.4). This area extends along the south-western boundary of the OMMPCC (Figure 8-6). A dam is located at the northern end. An unsealed roadway follows the eastern edge of the patch and the western edge connects with a complete, continuous patch of native vegetation.

The area contains Castlereagh Scribbly Gum Woodland, a vulnerable ecological community (VEC) under the BC Act and an endangered ecological community (EEC) under the EPBC Act. It is evident that the vegetation has been subject to a range of disturbances, including fire and clearing and there are no mature or over-mature trees. Edge effects are evident along the western vegetation edge, in response to clearing and maintenance of the access track along the eastern boundary fence of the OMMPCC.

No threatened plant species were recorded within the patch during this survey, although the extended drought period may have caused individuals that may have been present to die back to tubers or other root storage organs. Suitable habitat for threatened plant species which have been recorded in other parts of the Complex, including Dillwynia tenuifolia, Microtis minutiflora and Persoonia nutans, occurs within the proposed APZ area. Other threatened plant species which may occur within the APZ area, but which were not recorded during this survey include Acacia bynoena and Pimelea curviflora var. curviflora. As these threatened species are low-growing, the likelihood of long-term survival within the future APZ-managed patch (if present) is moderate to high, especially because the removal of shrubs would result in increased light levels.

The vegetation may provide foraging habitat from some threatened fauna species on occasion, including micro bats that forage along the interface of woodland and cleared areas and the Grey-headed Flying Fox, when trees are flowering. There are no hollow-bearing trees to provide roosting, nesting or denning habitat for hollow-dependent fauna, including tree-dwelling micro bats, parrots or forest owls or arboreal mammals. There are more extensive areas of intact



native vegetation to the north and north-east of the area proposed for disturbance, including within the E2 Zone to the north and north-east of the subject site and nearby conservation reserves which are likely to provide more valuable habitat for threatened and migratory woodland species in the locality.

Car Parkand New

Gatehouse Works

Outer MetropolitanMulti-Purpose

Correctional Centre

30

31

3233

35

34 36

37 38

39

41

40

44

42

43

21

20222324252627

29

28

1211

13

10

1

2

3

4

5

9

6 7 15

148

19

18

1617

45

4647

5152

48

53

4950

FIGURE

0 20 40

Metres


21-27421

Date 21 Sep 2018




Paper Size ISO A3

oData source: . Created by: mweberG:\21\27421\GIS\Maps\Deliverables\21_27421_Z013_REF_OMMPCCVegetation.mxd

Print date: 21 Sep 2018 - 17:45

LegendSite Boundary

Proposed BuildingsProposed carpark

Site Compound

Contractor ParkingSite Access Tracks

Surveyed TreesTrees to be removedTrees to be retained

Trees that may possibly be removed

Vegetation MappingShale/Gravel Transition Forest

6 - Castlereagh Scribbly Gum WoodlandShale/Gravel Transition Forest and Castlereagh Scribbly Gum Woodland Intergrade

Exotic Grassland

OMMPCC- Vegetation and surveyed trees

Data Disclaimer





The OMMPCC site is secured and hence access is largely restricted to aerial species such as birds and bats. The open grassland provides foraging habitat for Australian Wood Ducks (Chenonetta jubata) and Masked Lapwings (Vanellus miles). Bird species recorded in the trees or on buildings included the Crested Pigeon (Ocyphaps lophotes), Noisy Miner (Manorina melanocephala), Magpie (Cracticus tibicen) and Australian Raven (Corvus coronoides).

No nests were recorded in any trees or on the ground. The trees are less than 20 years old, therefore no hollows occur in any trees on the site. No scratches were recorded on the leaders of any trees and no deposits indicating regular roosting sites were recorded during this survey.

Microchiropteran bats that forage within urban parks and gardens may occur on the site but are unlikely to roost in trees on the site, given the young age of the trees and absence of roost sites (eg hollows, peeling bark etc). There is no suitable roosting habitat for cave-roosting species. Numerous scats and diggings indicate that rabbits (Octylagus cuniculus) are also regular visitors to the site.

The roundabout has several dense hedges which may provide shelter and forage for native passerines, e.g. Superb Fairy-wren (Malurus cyaneus), although only one exotic species – Sparrow (Passer domesticus) was recorded during this survey. No nests were recorded within the hedges. Several Eastern Grey Kangaroos (Macropus giganteus) were recorded resting along the edge of the car park.

The proposed construction compound has a groundcover of mostly exotic grass and forb species, which is heavily grazed by kangaroos and rabbits. Fauna habitat value of the site is low given the lack of floristic and structural diversity.

No nests or other indications of occupation by fauna were recorded within the trees near the OMMPCC site access, although it is likely that the trees are occasionally visited for foraging by common bird species typical of urban parks and gardens.

The trees occurring in this site do not have canopy connection to any complete, continuous patches of native vegetation, although complete, continuous patches of native vegetation occur further to the north and north-west.

Threatened biota

A search of Atlas database records indicates the occurrence of 22 threatened bird species, 5 bat species, 1 gastropod and 4 arboreal marsupials within a 10 km radius of the site.

Castlereagh Scribbly Gum Woodland occurs to the east of the OMMPCC site. Castlereagh Scribbly Gum Woodland in the Sydney Basin Bioregion is listed as a Vulnerable Ecological Community (VEC) under the NSW BC Act and an Endangered Ecological Community (EEC) under the Commonwealth EPBC Act.

Shale-Gravel Transition Forest occurs to the north and north-east of the OMMPCC site. Shale-Gravel Transition Forest in the Sydney Basin Bioregion is an Endangered Ecological Community (EEC) listed under the NSW BC Act and a Critically Endangered Ecological Community (CEEC) listed under the Commonwealth EPBC Act.

Eleven threatened plant species have been recorded within a 10 km radius of the site. Three threatened plant species; Pimelea nutans, Micromyrtus minutiflora and Dillwynia tenuifolia have been previously recorded in patches of native vegetation to the east of OMMPCC (GIS Environmental Consultants 2014).

No threatened plant species were recorded within the proposed APZ area during the site survey.




Flora

During construction, 28 of the 44 assessed trees would need to be removed (refer to Appendix C of Appendix F for list of trees). The remaining 22 trees would require protection during demolition, excavation and construction. These trees would be protected by mitigation measures identified in section 8.3.4. All trees proposed for removal were planted around 16 years ago. Mid-storey and native groundcover species were not observed, and the site is free of continuous patches of native vegetation.


As discussed in section 8.3.1, the site provides negligible habitat for fauna. Disturbance of the site, car park and new gatehouse and construction compound site as part of the proposed works is unlikely to result in a direct or indirect impact on any habitat of importance for threatened flora and fauna species.

The use of machinery and general disturbance associated with the proposed works may deter the common bird species that currently occur on the site from foraging in the immediate vicinity. This would only be temporary for the duration of the works and is unlikely to cause significant impacts to any local fauna populations.

Proposed APZ area

The proposed APZ area contains a total of 0.52 ha of Castlereagh Scribbly Gum Woodland and a vulnerable ecological community (VEC) under the BC Act and an endangered ecological community (EEC) under the EPBC Act.

The APZ establishment works would require the removal of some canopy trees and all mid-storey shrubs and small trees within this area to achieve the required NSW Rural Fire Services APZ Outer Protection Area requirements (refer to Appendix G). The groundcover would occasionally be slashed.

An Assessment of Significance for the proposed modification of this patch of native vegetation is included in Appendix D of Appendix F. Based on the findings of the assessment, the management of the small area of edge vegetation within the proposed APZ for the OMMPCC is unlikely to have a significant impact on the local occurrence of Castlereagh Scribbly Gum Woodland at the subject site.


Operation of the proposal would not result in any impact to biodiversity.


Construction

The shrubs and trees which require removal should be removed carefully, in accordance with relevant requirements and guidelines including Safe Work Australia (2016).

If appropriate, the felled trees should be mulched and spread over the TPZ of retained trees or regeneration areas.

Those trees proposed for retention within the OMMPCC should be protected by temporary fencing. Fencing should be installed prior to demolition and should be kept in place during excavation and construction. Fencing should also be considered, at the discretion of the Project Arborist, along the edge of the access road, to the north of the car park, if any road widening is proposed, and between the construction compound and the line of trees, if



works and structures are located less than 5 m from the bases of the trees. The extent of the protective fencing should follow as closely as possible the recommended TPZ, as indicated in the tree schedule at Appendix C of Appendix F. The protective fencing should be installed under the supervision of the Project Arborist.

The following actions should not be permitted within TPZs:

– Storage of materials, plants or equipment

– Installation of site sheds or portable toilets

– Excavations, trenching, ripping or cultivation of soils

– Modification of existing soil level or addition of fill materials

– Disposal of waste materials and chemicals (both solid or liquid)

– Mechanical removal of vegetation

– Pedestrian or vehicular movement.

Any root pruning required within the TPZ should be approved by the Project Arborist and any digging and pruning of roots (only roots < 5cm may be pruned) within the TPZ should be conducted by hand for a clean cut.

To protect soil within the TPZ, a layer of organic mulch may be applied (no more than 75 mm thick). Any mulch used should comply with the Australian Standard – composts, soil conditioners and mulches AS4454-2012 (Standards Australia 2012).

A Project Arborist should supervise works and inspect excavated areas adjacent to retained trees, in order to assess the amount of fine tree roots affected, the loss of which may affect tree health and the amount of supporting roots affected, the loss of which may affect tree stability. The project arborist would then determine appropriate ameliorative measures for retained trees (e.g. canopy reduction, irrigation, fertiliser applications) or provide recommendations for tree removal if required.

The Landscape Plan for the proposal should include appropriate indigenous native species which are representative of the surrounding native vegetation types.

If any threatened species (flora or fauna) is discovered during the works, stop work immediately and notify the site’s environmental representative. Work would only recommence once the impact on the species has been assessed and appropriate control measures provided.

Operation

No mitigation measures would be required.

8.4 Bushfire hazard

This section provides a summary of the results of the bushfire assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix G. The assessment was informed by desktop research and a site visit undertaken in August 2018.


Context

The existing built environment of the OMMPCC site and areas to the west of site consists of buildings and structures within cleared, landscaped and maintained grounds. To the north, east and south of the OMMPCC site there are area of native vegetation cover. These areas of native vegetation trigger the inclusion of parts of the site within the bushfire prone area on Penrith City Council’s Bushfire Prone Land Map.



As seen in Figure 7-11 (refer to Section 7.4) the large areas to the north, east and south of the OMMPCC site fall within a 100 metre wide bushfire-buffer. Category 1 vegetation located directly outside the OMMPCC site along the south east boarder of the compound.

The location of OMMPCC within the bushfire buffer area means that buildings within, or partly within, the bushfire prone buffer would require bushfire protection measures satisfying the requirements of Planning for Bushfire Protection (RFS, 2006).

The remaining area within the OMMPCC site is not classed as bushfire-prone as it is within developed and cleared/landscaped area, and is located more than 100 metres from retained forest vegetation.

Vegetation assessment

Field inspections were undertaken to confirm vegetation types occurring on site that may contribute to bushfire fuel loads. The field inspections undertaken by GHD during August 2018 confirmed that the vegetation types occurring immediately east of the OMMPCC, within the area depicted on the Penrith City Council map as Category 1 vegetation, is Castlereagh Scribbly Gum Woodland (CSG Woodland). The CSG Woodland adjacent to the south-eastern perimeter security fence of the OMMPCC has a tall (> 2 metres) dense shrub stratum consisting of sclerophyllous species.

For the purposes of bushfire assessment, the CSG Woodland in this location is classifiable as a Dry Sclerophyll Forest (Shrub/grass sub-formation) in accordance with Planning for Bushfire Protection (NSWRFS 2006) on the following basis:

The overstorey strata is dominated by eucalypts within a 10 to 30 metre height range, with crowns that may touch or overlap;

The understorey contains a prominent layer of hard-leaved shrubs, including a mixture of hard and soft-leaved plants; and

The conspicuous presence of grasses in the understorey.

This vegetation formation can support high intensity bushfires, most likely burning as an understorey fire or fast moving crown fire. As the OMMPCC site is cleared, and only overlap with the outer edge of the bushfire buffer, the risk posed by this vegetation type is reduced principally to ember attack.

The CSG Woodland adjacent to the north-eastern perimeter security fence of the OMMPCC has been modified, with characteristics consistent with an APZ – Outer Protection Area, in which the sclerophyllous shrub stratum has been removed, and the overstorey stratum has been thinned through removal of saplings and sub-dominant trees, with only dominant mature overstorey trees retained.

Planning for Bushfire Protection (RFS 2006) assumes that for Dry Sclerophyll (Open) Forest types, 25 tonnes per hectare of fuel is present, this being the total fuel load present in ground and understorey strata (surface, near-surface and elevated fuel strata, inclusive of bark). Fuel loads and understorey vegetation characteristics in unmodified CSG Woodland at the site are consistent with Planning for Bushfire Protection fuel load assumptions.

Slope Assessment

The OMMPCC site is situated on relatively flat topography, with landform under the adjacent bushfire prone vegetation located within 140 metres of the site being flat. Accordingly, the appropriate effective slope category for bushfire attack level assessment is the “Upslope /Flat” category. The assessment concluded that the areas of bushfire prone vegetation immediately east of the OMMPCC are on flat land, slope would have no material effect on bushfire behaviour at the site.



Bushfire Attack Level (BAL) Assessment

The BAL has been determined using Planning for Bushfire Protection (NSW RFS, 2006). The BAL uses the buildings distance to the forest and the lands slope to determine the BAL category.

Building construction and design appropriate for Level 1 construction with a BAL of 12.5 is proposed in line with construction standards

However, as a correctional facility, the OMMPCC is considered a Special Fire Protection Purpose (SFPP) Development under the Planning for Bushfire Protection (NSW RFS, 2006). The nature of SFPPs means that occupants of the development may be more vulnerable to bush fire attack for reasons, including:

organisational difficulties for evacuation and or management

supervision during a bush fire may be difficult

logistical arrangements for the numbers of residents may be complicated in terms of alternate accommodation, transport, healthcare and food supplies.

To ensure risks to personnel are minimised during a bush fire emergency, standards for bushfire protection measures for SFPP developments are higher than non-SFPP developments.

While the proposed OMMPCC buildings are to be constructed to achieve a BAL of 12.5, it is recommended that vegetation setbacks are to achieve a BAL of 10, which is equivalent to 60 metres distance.

Determination of Asset Protection Zone (APZ)

A key bushfire protection performance measure is maintaining a degree of separation between buildings and bushfire prone vegetation. GHD has determined that a minimum APZ of 60 metres would assist in preventing radiant heat levels on the proposed building. The existing separation from hazards are:

northern approach direction - 62 metres

eastern approach direction – 28.5 metres

southern approach direction - 62 metres.

Woodland vegetation outside the south eastern perimeter security fence would require modification to meet the APZ Outer Protection Area standard, to provide a minimum separation distance of 60 metres. The vegetation area that would require clearing is shown in Figure 8-6.



Figure 8-6 New Asset Protection Zone dimensions south-east of OMMPCC

The location and extent of APZ establishment work is shown along the south-eastern boundary of OMMPCC. This establishment work would be required to providing an adequate setback between OMMPCC accommodation block buildings adjacent Castlereagh Scribbly Gum Woodland.

Emergency access/egress requirements

Road access and egress from emergency service vehicles into OMMPCC is via The Northern Road. Access to and from OMMPCC to the public road network is via the existing JMCC road network. The existing network of internal roads meet or exceed Planning for Bushfire Protection requirements, thus meeting acceptable solutions for provision of safe access for emergency service vehicles.

Water supply and utilities

In the event of a bushfire, the OMMPCC site is serviced by existing mains water which can be accessed by fire and emergency services.

The provision of electrical services to the OMMPCC site is via underground services and do not increase the bushfire risk.

Bush Fire Emergency Management and Evacuation Plan

Clear understorey and thin overstorey trees to APZ OPA standards

Minimum 60 metre APZ width from building



Existing evacuation and emergency planning procedures are established for the OMMPCC site, as documented in the existing JMCC Bushfire Emergency Management Plan.

The OMMPCC site is served by an existing bitumen, two-way road that is connected to an internal bitumen road network through a single egress via The Northern Road. The road providing direct access to the building meets Planning for Bushfire Protection (PFS, 2006) Acceptable Solutions requirements in full, and provides safe, clear operational access and egress for emergency service personnel and facility users, as per the objectives.

Factors effecting bushfire behaviour

The principal factors influencing bushfire behaviour are the state of bushfire fuel accumulation in adjacent forest vegetation and the weather prevailing at the time a fire is burning within the JMCC site.

The weather associated with generating a high intensity fire hazard to the site would be a bushfire driven by driven by strong dry winds from the north-east, east or south-east.


The Bushfire Assessment Report (refer to Appendix G) assessed the local environmental features that have the potential to increase the risk of bushfire hazard on the proposal and whether the OMMPCC proposal meets the requirements of Planning for Bushfire Protection 2006 (RFS 2006).

The required modification to vegetation to meet the APZ Outer Protection Area standard could have impacts on the biodiversity of the area. Impacts and mitigation measures for the clearing is provided in Section 8.3.

Construction activities have the potential to cause bushfire due to:

Hot works during construction including welding and excavation (excavator bucket making contact with rock)

Build-up debris under vehicles or machinery, discarded cigarettes and domestic rubbish such as glass bottles.


Once the proposed works are complete, there would be no additional impacts to bushfire hazards. On-going measures are provided in Section 8.4.4 below to ensure bushfire hazards are minimised at all times.


Construction

Hot work (such as welding) outside during dry weather or periods of prolonged bushfire risk would be avoided.

In the event of a bushfire, work is to cease and workers evacuated in accordance with standard emergency response procedures.

Design of above ground items would be in accordance with the bushfire protection measures included in the RFS guideline Planning for Bushfire Protection 2006.

Shrubs would not be planted close to any buildings.

Fences, sheds and structures would be constructed of non-flammable material and be clear of trees and shrubs.



Ensure fire hydrants are serviceable and available.

Operational

General site maintenance would be undertaken as per existing maintenance procedures in order to minimise bushfire risk.

All grasses are would be maintained at a height of a maximum 50 mm.

The crowns of trees would be separated where practical such that there is a clear separation distance between adjoining tree crowns.

Lower branches of trees would be pruned to stop a surface fire spreading to the canopy of the trees.

Trees or shrubs would be regularly cleared of any dead material.

Gas cylinders would be stored in an area that is clear of all flammable material and securely tethered with non-flammable fastenings to prevent toppling over.

Roof gutters would be cleaned regularly to ensure they are free of leaves and other combustible material.

Driveways and access ways would allow for the safe passage for emergency vehicles to all buildings and assets on the land.

In the event of a bushfire, emergency management and evacuation would be undertaken in accordance with the John Morony Correctional Complex Bushfire Emergency Management and Evacuation Plan.

8.5 Soils, erosion and water quality


Topography, geology and soils

The whole of JMCC is located within a generally flat topography, sloping slightly towards the east. Elevation at the complex is approximately 30 metres Australian Height Datum (AHD).

According to the Penrith 1:100,000 Geological Sheet 9030, the underlying geology of the OMMPCC site comprises of Wianamatta Group shales and sandstones, which are characterised by alluvial gravel, sand, silt, clay, poorly consolidated conglomerate, sandstone and siltstone. The uppermost geology constitutes of Londonderry Clay and is comprised predominantly of moderate to highly plastic clay, sand, ironstone and aggregates of sand and clay (Jacobs, 2018).

The Soil Landscape Map 1:100,000 of Penrith indicates that the landscape at the DCC site is located within the Berkshire Park soil landscape group, characterised by dissected, gently undulating low rises on Tertiary terraces of the Nepean and Hawkesbury River systems. Soils in this landscape comprise clay and clayey sands with ironstone nodules and silcrete and impermeable subsoils.

Geotechnical investigations were undertaken by Jacobs in 2018 to observe the underlying soil formations. Out of eight test pits, fill materials were encountered in one test pit consisting of brick, tile and large concrete fragments in the top 15 centimetres of soil material. Natural soils characteristic of the Berkshire Park soil landscape were encountered below the fill material. Topsoil approximately 10 centimetres deep, underlain by natural soils with no observable contamination, was encountered at the other seven test pits.



Acid sulfate soils

A search of the ASRIS identified that the proposal is located in an area of extremely low probability of acid sulfate soils.

The OMMPCC site is not located in an acid sulfate soil risk area according to the risk maps prepared by the Department of Land and Water Conservation.

Contamination

A Preliminary Site Investigation was undertaken by Jacobs in July 2018. It is understood that the OMMPCC site has historically been vacant until the development of the correctional facility approximately 18 years ago.

The investigation concluded that there is unlikely to be sources of contamination at the site which may pose a risk to onsite and offsite receptors. Asbestos was not observed onsite or within observed soils during the investigation. The site is considered suitable for the ongoing landuse as a correctional facility.

Surface water

There are dams present to the north, east and west of the OMMPCC site.

The nearest drainage line is an unnamed gully to the southwest of the site, which drains to the northwest to Rickabys Creek, approximately 1.1 kilometres from site.

The existing stormwater drainage system within OMMPCC was analysed by Wollacotts Consulting Engineers (2018). The site catchment within OMMPCC is split into two subcatchments, southern (proposed minimum security area) and northern (proposed medium security area). The two subcatchments are divided by a central mound and security fence.

Stormwater drainage from site occurs through existing pit and pipe system, as well as grassed swale overland flow paths. The southern catchment predominately drains and the northern catchment drains to the existing pit and pipe system. A camera test inspection of the existing stormwater system identified that the main 450 mm diameter stormwater pipe has been damaged with multiple cracks and obstructions.

Flooding

The OMPCC site is not located within the area mapped as a Flood Planning Area under the Penrith LEP.

The entrance to JMCC appears to be at the edge of probable maximum flood area according to Figure 1 of Hawkesbury-Nepean Valley Flood Risk Management Strategy (Infrastructure NSW 2017). The OMPCC site is not affected by the regional 1:100 year flood event nor the probable maximum flood area.

Groundwater

Environmental site assessment undertaken by CH2M (quoted in Jacobs, 2018) identified that the aquifers at the site are likely to be porous, extensive and of low to moderate productivity. There are 11 registered bores within a one kilometre radius of the site, five of which are or have been used for stock/domestic/farming purposes (Jacobs, 2018). Depths range from 12 metres below ground (mbgl) to 150 mbgl. The Irrigation and Drainage Management Plan for JMCC Sewage Treatment Upgrade prepared by Agsol (quoted in Jacobs, 2018) concluded that the groundwater table at the site is likely to be below three mbgl.




Construction of the new facilities would involve disturbance to the ground surface to construct the slab, footings, and connection to underground services. Stockpiles of excavated soil would be created during construction. Excavation and stockpiling activities, if not adequately managed, could have the following impacts:

erosion through exposed soils and stockpiled materials

dust generation from excavation works, and vehicle movement over exposed soils.

an increase in sediment loads entering the stormwater system and the nearby receiving waterways.

Excavated spoil would be reused on site. Construction works may also access excess surplus soil from DCC to meet their fill requirements.

The proposal also has the potential to result in soil and water contamination via any accidental fuel or chemical spills from plant and equipment. The potential for impacts as a result of any spills or leaks would be managed by the implementation of measures provided in section 8.5.4.


Operation of the proposal would not impact topography, geology, soils or water quality at the site. Aside from the building areas, the site would be sealed or landscaped where required. No erosion or sedimentation impacts are anticipated during operation.


Construction

A soils, erosion and water quality management sub-plan would be prepared and implemented as part of the CEMP. It would detail the measures to minimise the potential for soil and water quality impacts, and would include the following measures as a minimum

– Sediment and erosion control devices would be installed around work sites and maintained to minimise the transport of sediment in accordance with Managing Urban Stormwater, Soils and Construction, Volume 1 (Landcom, 2004). These devices would be inspected weekly and immediately after rainfall to ensure their effectiveness over the duration of the works. Any damage to erosion and sediment controls would be rectified immediately.

– The area of exposed surfaces would be minimised and disturbed areas would be stabilised progressively to ensure that no areas remain unstable for any extended length of time.

– Wherever possible, soil and sediment that accumulates in erosion and sediment control structures during site restoration would be reused unless it is contaminated or otherwise inappropriate for reuse.

– Work would be ceased in the immediate vicinity of any areas of suspected contamination that are identified prior to or during work unless specific provisions and procedures have been put in place to satisfactorily address these issues.

– Vehicle and machinery movement would be confined to designated roads, tracks, pathways and work areas. Designated lay-down areas would be selected to minimise erosion or vegetation damage.

– Work would be ceased during heavy rainfall events when there is a risk of sediment loss off-site or ground disturbance due to water logged conditions.



– Any groundwater or leachate intercepted by the proposal would be treated appropriate for the intended disposal method. No groundwater (or leachate) is to be discharged from site into adjacent areas or stormwater systems prior to treatment in accordance with the relevant regulatory requirements.

– Equipment, plant and materials would be placed in designated areas where they are least likely to cause erosion.

– Following completion of work, land surfaces would be restored to as close as possible to pre-existing conditions.

Design of stormwater drainage system would take into account the occurrence of plastic clay reactive soils on site that are prone to shrink-swell movement due to seasonal moisture change.

Treatment to fill batters and slope cuts are to be provided to avoid soil erosion problems

Operation

No mitigation measures would be required during operation.

8.6 Socio-economic

This section provides a summary of the results of the socio-economic assessment of the proposal undertaken by GHD. The full assessment report is provided in Appendix H. The methodology for the assessment is described in Section 2 of Appendix H.


The community with the potential to be impacted by the proposal would include:

inmates and staff at OMMPCC

visitors to OMMPCC and other facilities within the JMCC

nearby residents in the suburb of Londonderry

users of local community facilities including park and recreational facilities including Windsor Downs and Castlereagh Nature Reserves.

Inmates

There are currently 344 inmates within the OMMPCC. The inmates spend their time outside the cells between the hours of 8 am and 4 pm.

Services and programs available for inmates at the OMMPCC include the following:

Intensive Drug and Alcohol Treatment Program (IDATP) – a program to:help inmates gain an understanding of their substance abuse dependence and offending behaviour, reduce the likelihood of re-offending and provide them the skills, resources and support needed to return to the community, alcohol and/or drug-free and crime-free.

RSPCA NSW - Dog Rehabilitation Program – a program offering inmates specialised educational opportunities to train and rehabilitate neglected dogs that have been rescued by the RSPCA until they are healthy and well enough to be re-housed.

NSW Wildlife Information and Rescue Services (WIRES)’ Wildlife Centre located within the JMCC – which offers inmates opportunities to work caring for injured, orphaned and sick animals.

Various employment opportunities through the Corrective Services Industries’ laundry services, upholstery unit and print unit as well as ground maintenance works.



Staff

There are on average 64 staff on the weekday and weekend at the OMMPCC, spread across four shifts.

Visitors to the OMMPCC

The existing operation of OMMPCC with regards to visitors has been described in section 3.2.2.

It is assumed that the majority of visitors are family members or relatives of the inmates. Based on a survey of visitors to NSW Correctional Centres conducted by the CSNSW in 2012, 23% of visitors reported visiting their ‘son or daughter’, 19% reported visiting their ‘husband or de facto’, 8% selected ‘other’ relationship (which includes cousins, grandchildren, aunts and uncles, nieces and nephews, and in-laws). Six percent did not disclose the nature of their relationship with the prisoner they were visiting.

SHINE for Kids, a child care and family centre, is a facility available for all visitors visiting inmates at JMCC. This facility provides a family friendly environment and a drop-in service for visitors before or after their visit. It is equipped with children’s playground and provides families with opportunities to connect with each other. The centre is currently open Monday to Friday 9.30am to 5.00pm and Saturday and Sunday from 9.45 am to 3.15 pm.

SHINE for Kids is originally located at the northeastern corner of the DCC site and would be moved to an alternate location 200 metres its existing location under the Early Works proposal.

Nearby residents

The nearest residential areas to the OMMPCC site are in the suburbs of Berkshire Park, Bligh Park and Londonderry. The suburbs of Berkshire Park and Bligh Park are significantly buffered from the site and separated by bushland.

Londonderry is a rural residential suburb with the following characteristics (Australian Bureau of Statistics, 2016 Census):

population of 3,906 people

median age of 38

51.6% are male, with 48.4% being female

Aboriginal and Torres Strait Islander people make up 4.5% of the population

there are 1,001 families, with average of 1.1 child per family

there are 1,210 private dwellings

21.8% of people were born overseas, with top countries of birth including Malta (2.6%), England (2.5%), New Zealand (1.4%), Italy (0.5%) and Netherlands (0.5%)

62.9% of people work full time, 28.6% working part time. The unemployment rate at Londonderry is 2.5%, which is less than the national average of 6.9%.

Users of local community facilities

Community facilities located within five kilometres from the OMMPCC site include:

SHINE for Kids Child and Family Centre, located within JMCC about 50 metres west of OMMPCC

Evolve Early Learning Centre, located in Bligh Park about two kilometres northeast of the site

Berkshire Park Community Centre, located around 2.3 kilometres south of the site



Londonderry Public School and Londonderry Early Learning Centre, located around 3.8 kilometres west of the site

Londonderry Neighbourhood Centre, located around 4.8 kilometres west of the site.

Users of surrounding parks and recreational area

Parks and recreational areas within five kilometres from the OMMPCC site include:

Windsor Downs Nature Reserve, located about 450 metres southeast of the site

Castlereagh Nature Reserve, located about 2.3 kilometres south of the site.

Windsor Downs and Castlereagh Nature Reserves protect one of the largest and most ecologically intact remnants of the Cumberland Plains Woodlands in Western Sydney. Use of the reserve is limited to daytime use along designated walking trails.



The majority of visitors to correctional centres are family members of inmates. Maintaining family ties during imprisonment is important for both inmate and the family members. Moreover, maintaining these relationships could contribute to inmate’s successful re-integration into community life (CSNSW, 2010). This would in turn result in a benefit to the wider society.

As such, it is important that visitors’ access to the OMMPCC is maintained during construction. Construction activities may result in inconvenience to inmates, staff and visitors through temporary changes to traffic conditions, noise levels, air quality and visual amenity.

Staff and visitors may also experience traffic impact due to increases in construction traffic and particularly while car park reconfiguration work is being undertaken. There is potential for some visitors, particularly families with children, to become concerned about potential impacts to pedestrian safety as a result of increased construction vehicle movements within JMCC.

The OMMPCC proposal is not expected to impact on any facilities or programs currently available for the inmates at OMMPCC. Construction of the OMMPCC proposal would not impact on the operation of the SHINE for Kids child and family centre and as such, visitors to the OMMPCC would be able to continue to use this facility once it has been relocated (as assessed in the early works REF described in section 1.5.3).


During construction, there is potential for nearby residents, users of local community facilities and surrounding parks and recreational areas to experience impact in noise, air quality and traffic.

As indicated in sections 8.2 and 8.7.3, construction is expected to cause a short-term increase in background noise level and disturbances to air quality. Residents, users of local community facilities and recreational users of Windsor Downs Nature Reserve and Castlereagh Nature Reserve may experience noise impacts during construction, however these would be short term and minor in nature.

Construction would result in short-term minor impact on traffic the local road network as discussed in section 8.1.2. This impact would be minimised through the implementation of mitigation measures listed in section 8.1.4.



It is unlikely that residents, users of local community facilities and recreational users of Windsor Downs Nature Reserve and Castlereagh Nature Reserve would experience any visual impacts from any construction activities.

Impact on local economy and employment

There are a number of positive economic benefits that may occur during the construction phase, including employment opportunities and income generation for local businesses.

It is expected that a peak workforce of up to 20 people is expected during construction.

There is also the potential for construction workers to utilise local businesses such as food retail shops and service stations located just one kilometre away in the suburb of Bligh Park.

Potential procurement of goods and services, such as building materials, may also provide socio-economic benefits to local and regional businesses.

Summary of socio-economic impacts during construction

Construction impacts are summarised Table 8-17.

Table 8-17 Summary of social impacts during construction


Nature of impact

Type of impact

Duration of impact

Level of impact

Air quality, noise Inmates, visitors, staff


Visual amenity Inmates, visitors, staff


Safety for pedestrian within the JMCC during construction

Visitors and staff


Air quality, noise, amenity

Local residents, users of local communities and parks/ recreational areas

Negative Indirect Temporary Negligible

Economic benefit due to construction work

Construction workers in the area

Positive Direct Medium Negligible

Procurement of local goods and services for project construction



Economic benefit due to increase in people frequenting the area

Local businesses






The operational impact of the proposal on inmates, staff and visitors is generally expected to be a positive one.

Inmates, staff and visitors would experience neutral visual amenity impact resulting from new buildings and infrastructure as the proposal would replace existing accommodation blocks at the same location.

Car park modification, which would be undertaken as part of the proposal, would result in a small increase in the parking capacity on site. No negative impact would be expected regarding parking for staff and visitors during the operation of the proposal.


There is no potential visual amenity impact for nearby residents, users of local community facilities and surrounding parks and recreational areas, as the view into the proposed new buildings of the DCC is well screened from wider community by the existing DCC facilities as well as mature trees along The Northern Road.

Impacts on local economy and employment

The modification of OMMPCC has the potential to generate an additional 26 staff members, creating long term employment opportunities that may be available to both local residents and people outside the area. These would likely range across all job types including both professional and lower-skilled roles. This is considered a benefit for people from across Sydney, and potentially those in Western Sydney.

As a flow-on benefit resulting from an increase in staff at OMMPCC, there may be a small increase in income for local businesses and services in the surrounding area.

Impact on wider community

The proposed development would have an overall positive benefit on the wider community by providing much needed relief for the already overcrowded correctional facilities within the metropolitan area and the associated high risk issues.

Summary of socio-economic impacts during operation

Operational impacts are summarised in Table 8-18.

Table 8-18 Summary of social impacts during operation


Nature of impact

Type of impact

Duration of impact

Level of impact

Additional capacity to meet additional demand of prison beds across the state

Regional CSNSW

Positive Direct Long-term Medium

Increased employment opportunity

Local residents and residents

Positive Direct Long-term Minor




Nature of impact

Type of impact

Duration of impact

Level of impact

outside the local area

Increased spending in the local area due to additional staff

Local businesses


Visual amenity due to new buildings and infrastructure

Inmates, visitors, staff

Neutral Direct Long term Negligible


Construction

Mitigation measures included in Sections 8.2, 8.7.3 and 8.1 would be implemented to minimise impacts on noise, air quality and transport.

A communication and stakeholder engagement strategy would be implemented to manage community and stakeholder concerns associated with construction. The strategy would communicate construction-related impacts would be managed, particularly relating security of the facility during construction.

A complaints management procedure would be prepared to allow members of the community to address any concerns during construction.

Notification regarding construction activities would be provided on site as well as on the CSNSW website, advising visitors of any alternative access arrangements in place and to exercise patience when visiting the OMMPCC during construction works.

Operation

Ongoing communication and stakeholder engagement strategy would be maintained to establish a positive relationship with the local community.

A communication and stakeholder management strategy would be prepared to establish a positive image of the facility on the local community.

8.7 Other issues

8.7.1 Aboriginal Heritage

A search of the OEH administered Aboriginal Heritage Information Management System (AHIMS) database returned no record for listed Aboriginal heritage sites within 200 metres of the proposal site.

Construction would not impact on any listed Aboriginal heritage items. Given the prior history of disturbance on site, the risk of encountering any unknown items is considered to be extremely low.

Operation of the proposal would not result in any impacts to Aboriginal heritage.


An unexpected finds procedure would be prepared and included in the CEMP to define the actions to be taken in the event that any previously unidentified Aboriginal heritage/archaeological items are uncovered during construction works. This would include



stopping work in the vicinity of the find, and seeking advice from a suitably qualified heritage consultant/archaeologist (and in consultation with the relevant division of OEH, as required). Works in the vicinity of the find would not re-commence until clearance has been received from the heritage consultant/archaeologist.

8.7.2 Non-Aboriginal Heritage

A search was undertaken of the following statutory and non-statutory heritage registers to determine the presence of non-aboriginal heritage items in the vicinity of the site:

State Heritage Register and State Heritage Inventory

Penrith Local Environmental Plan 2010

National Heritage List

Commonwealth Heritage List

Australian Heritage Database (Register of the National Estate (RNE) – Non-statutory archive) and

Australian Heritage Places Inventory (Register of the National Estate – Non-statutory archive).

The nearest site with state significance is Castlereagh State Forest, situated between The Northern Road and Llandilo Road approximately 1.5 kilometres south of site. This site is listed in the Register of the National Estate. This same area also forms part of the Castlereagh Jewel Beetle Habitat and Movement Corridor, which is also listed in the Register of the National Estate.

The nearest site with local heritage significance is Berkshire Park Homestead Site, located on 844-848 Richmond Road approximately three kilometres south of site.

The OMMPCC site is not located in a heritage conservation area and there are no items of heritage significance within or in the immediate vicinity of the proposal site.

Given the distance to the site, construction would not impact on non-Aboriginal heritage items. During construction, finding of new heritage items is unlikely due to the previous disturbance on the site.

Operation of the proposal would not result in any impacts to Aboriginal or non-Aboriginal heritage.


If potential unexpected non-Aboriginal objects or potential relics are located during works, the unexpected finds procedure would need to be implemented. This would include notifying regulatory agencies and assessment by an archaeologist to recommend what further investigation or approvals are required.

8.7.3 Air quality

A search of the National Pollutant Inventory undertaken on 10 August 2018 identified six sources of pollution for the 2016/17 reporting period, in the postcode 2756. The following sources are closest to the proposal site:

South Windsor Sewage Treatment Plant, located about 3.2 kilometres east of the site

Aanalee Rearing Farm, located about 4.6 kilometres north of the site.

Other contributors to air quality within the study area include emissions from motor vehicles on the surrounding road network.



There are no other known odour sources within close proximity to the site.

The nearest sensitive receivers to the OMMPCC site include:

inmates and staff of, and visitors to, the OMMPCC and other facilities within the JMCC

residents located in properties on The Northern Road, about 620 metres to the north-west of the proposal site, and properties within Bligh Park, about 1.25 kilometres north at the nearest points

Bligh Park Public School, on Alexander Street, about 1.4 kilometres north of the proposal site.

Air quality impacts associated with construction would mainly result from dust generated during excavation and the movement of construction machinery, vehicles and plant. Wind erosion of uncompacted surfaces, such as stockpiled material from the DCC site, could also cause localised emissions of dust.

Dust has the potential to impact on the amenity of surrounding sensitive receivers.

The operation of construction plant and equipment would also result in additional exhaust emissions in the area, however these impacts would be short-term and temporary.

Potential air quality impacts would be minimised by implementing the mitigation measures listed below. With the implementation of these measures, potential air quality impacts during construction are likely to be minor:

A dust management plan would be prepared and implemented as part of the CEMP. It would detail the measures to minimise the potential for air quality impacts, and would include the following measures as a minimum:

– All plant and machinery would be fitted with emission control devices complying with relevant Australian Standards.

– Machinery would be turned off when not in use and not left to idle for prolonged periods.

– Dust generation would be monitored visually, and where required, dust control measures such as water spraying would be implemented to control the generation of dust.

– Any waste (such as excavated spoil) produced on-site would be stored appropriately to reduce the production of dust.

– Materials transported to and from the site would be covered to reduce dust generation in transit.

– Access points would be inspected to determine whether sediment is being transferred to the surrounding road network. If required, sediment would be promptly removed from roads to minimise dust generation and shade cloth would be fastened to the perimeter fence to minimise dust transported from the site during construction.

– Stabilisation of any excavated areas would occur as soon as practicable.

– Fixed hoses would be used to dampen exposed surfaces to minimise dust generation, where required.

8.7.4 Land use

The land where OMMPCC site is located is zoned SP2 – Correctional Centre.

Land uses immediately surrounding/adjoining the OMMPCC site include:

Honour House (minimum security inmate accommodation units) and visiting facilities to the north, beyond which is the internal access road and further beyond is forested bushland



single storey modular beds accommodation to the east, beyond which is forested bushland and further beyond is Richmond Road

CSI internal business units to the west, beyond which is DCC

John Morony Correctional Centre and forested bushland to the south.

Land uses immediately surrounding/adjoining the JMCC include:

bushland to the north, east and south of JMCC (zoned E2 – Environmental Conservation)

road infrastructure and rural residential properties to the west.

There would be no changes to the zoning and function of the OMMPCC site and its surroundings as a correctional facility during or following construction of the proposal.

All new facilities would be consistent with this land use zoning.

8.7.5 Visual amenity

The visual landscape of the OMMPCC site is dominated by corrective services facilities and associated infrastructure, adjoining road network, existing mature trees and other vegetation. Views to the proposal site are not visible from residents and road users outside the JMCC.

Construction plant and materials would be visible to visitors to the JMCC but not to public view outside the JMCC.

Overall, the potential visual impacts of construction activities are considered to be minimal and the works would be temporary and short term.

Once operational, the proposed new buildings would occupy the currently vacant land. These features would be consistent in appearance and form to other facilities in the vicinity.

No significant visual impacts are predicted and therefore no mitigation measures are considered necessary.

8.7.6 Waste management

Construction of the proposal has the potential to generate the following wastes:

general construction waste such as excess concrete, timber, paper, plastic and metal

domestic waste including food scraps, aluminium cans, glass bottles, plastic and paper containers, and putrescible waste generated by site construction personnel

surplus spoil from excavation activities.

A construction waste management sub-plan would be prepared and implemented as part of the CEMP. It would detail the measures to manage waste during construction, and would include the following measures as a minimum:

All soil excavated from site would be tested and subsequently managed in accordance with the Waste Classification Guidelines (EPA, 2014). Only spoil which meets the specified classification would be used for on-site reuse.

All waste, including excess spoil, is to be recycled if practicable, or alternatively taken to a licensed waste disposal facility.

All spoil reused on site as engineered fill is to be clean (i.e. free of organics and inclusions greater than 75 millimetres size) and free of contaminant.

Classify and dispose of waste (if unable to be reused or recycled) in accordance with the Waste Classification Guidelines (EPA 2014).



Ensure waste is placed in skip bins positioned in defined area(s) onsite or within the site compound (if required).

Avoid surplus construction materials through appropriate planning of the construction works.

Recycle waste in accordance with the NSW Government’s Waste Reduction and Purchasing Policy.

Waste receptacles for recyclable and non-recyclable waste are to be provided at each construction site for waste generated by construction workers.

Limit smoking to defined areas and provide butt bins for construction workers.

The EPA is not be notified immediately of any pollution incidents or harm to the environment as defined under Part 5.7 of the POEO Act.

Following construction, operational waste is expected to be similar to current operation. Waste management procedures for the proposal would be as per current operation with consideration potentially given to include recyclable waste collection in the future.

8.7.7 Hazards and risk

Occupational health and safety

Accidental contact with, including the storage and handling of dangerous goods, contaminated soils and groundwater and any hazardous materials have the potential to affect the health and safety of site workers and the surrounding community. There is potential for workers to encounter contaminated materials through importing contaminated soil and reusing them as fill.

Exposure to asbestos containing materials could pose a health and safety risk to construction workers through ingestion, dermal contact or inhalation. The following measures are to be included in the CEMP:

Spoil imported from another site (e.g. DCC site) would be tested prior to being reused at OMMPCC site as fill.

If unexpected contamination is encountered during excavation, the contaminated material would be stockpiled separately and the Site Project Manager would be notified

If asbestos containing material is found, the removal of this material would be undertaken by an appropriately licenced contractor as per WorkCover NSW requirements and current guidelines

Any asbestos or tyres found at the site would be registered and notified using the EPA’s online tracking system, WasteLocate

A work, health and safety management plan, and safe work method statements would be developed in accordance with regulatory requirements including the details of required personal protective equipment to be used by workers.

Safety and security

There is the potential for risks to pedestrians/public safety resulting from unauthorised access to construction work areas. NSW workplace safety laws require construction sites to have adequate site security, which includes appropriate fencing.

The following measures are to be included in the CEMP:

All construction work areas would be isolated from the general public.

The construction contractor would ensure that the construction site is secure at all times and take reasonable actions to prevent entry by unauthorised persons.



Construction works undertaken within the secure perimeter of the OMMPCC would be further isolated through the provision of additional security fence and surveillance equipment where appropriate

Existing risk management and emergency management plans for the facility would be reviewed, including for emergency access/egress from the new construction work area.

All construction staff would be screened and subject to criminal record checks prior to arrival at the site.

8.7.8 Services and utilities

Services diversions have been assessed as part of the early works REF (refer to section 1.5.3), This includes relocation of overhead supply poles along the existing OMMPCC access road would be relocated to a position outside of the new access roadway way to accommodate the temporary internal road diversion and relocation of gas meter and hydrant boosters.

Any additional utility adjustments and augmentation required would be undertaken in consultation with the requirements of the relevant utility owner. Any upgrade or replacement of services required outside the JMCC would be undertaken in accordance with relevant planning approvals and environmental management frameworks of the utility owners.

8.7.9 Sustainability

Specific sustainability initiatives for the proposed development have not yet been identified but would be confirmed during the subsequent detailed design stage. Specific initiatives that could be considered include:

installing energy efficient light fittings

reducing potable water consumption during construction

using treated non-potable water from the Sewerage Treatment Plant located within the JMCC wherever possible

installing water efficient fixtures and fittings

using drought resistant species in landscaping

recycling of construction and demolition waste (if any)

beneficial reuse of spoil that is not contaminated

specifying the responsible sourcing of construction materials, where possible, in the supply chain

consider opportunities for the employment of local tradespersons and businesses where possible.

In addition the following operational initiatives from the CSNSW Sustainability Policy would be encouraged:

CSNSW staff are encouraged to be actively involved in the development and implementation of policies and practices that contribute to achieving CSNSW environment management objectives

CSNSW regularly audits its performance and reports on progress related to its environmental objectives



8.7.10 Cumulative impacts

A search of the Department of Planning and Environment’s Major Development and the Penrith Council databases indicated that there are no major projects occurring in vicinity at the same time as this proposal. Works on the DCC as described in this REF would occur at the same time. DoJ would coordinate the proposed works at DCC and OMMPCC to resolve any potential cumulative impacts should they occur.

Mitigation measures for the proposed works at DCC and OMMPCC as described in this REF would minimise any potential impacts of the proposal. No adverse cumulative impacts (as a result of the proposal being undertaken at the same time as another major project in the vicinity) are expected.

This project, along with others under the NSW Government’s Prison Bed Capacity Program, would lead to a cumulative increase in the capacity of the DoJ’s infrastructure in NSW which is consistent with the Government’s objectives for the program and respond to the recent sharp increase in demand.



9. Environmental management 9.1 Environmental management approach

Under the State Government’s policy to improve the performance of the NSW construction industry, preparation of a CEMP is mandatory for all projects undertaken by or on behalf of government agencies or where funding is being provided by the government. The Construction Policy Steering Committee and the then Department of Infrastructure Planning and Natural Resources have produced environmental management system and environmental management plan guidelines aiming to assist contractors both in complying with the Government’s policy and in demonstrating that compliance. The environmental management objectives and supporting actions presented in this section are intended to assist in this process.

A separate CEMP would be prepared for each site. The CEMPs would also consider the demolition of the proposal and would include a risk assessment which ensures that the safeguards identified in this REF, as well as any others that are considered relevant, are effectively translated into actual construction techniques and environmental management activities, controls and monitoring/verification to prevent or minimise environmental impacts. The CEMPs should also identify the requirements for compliance with relevant legislation and other regulatory any requirements to ensure environmental safeguards described throughout this REF are implemented. The environmental management objectives and supporting actions presented in this section are intended to assist in this process. Department of Justice would review the CEMPs.

The CEMPs should generally conform to the structure shown in Table 9-1. It would incorporate, where relevant, the mitigation measures summarised in section 9.2.

Table 9-1 CEMP structure

Item sections

Background Introduction to the document Description of the proposal and project details The context for the CEMP in regards to the overall project The CEMP objectives The contractor’s environmental policy

Environmental management

Environmental management structure of the organisation and specific team responsibilities with respect to the CEMP and its implementation Approval and licensing requirements relevant to the project Reporting requirements Environmental training Emergency contacts and response

Implementation A project specific risk assessment A detailed list of environmental management safeguards and controls CEMP sub plans for specific environmental controls A detailed schedule assigning responsibility to each environmental management activity and control

Monitor and review Environmental monitoring Environmental auditing Corrective action CEMP review and document control procedures



9.2 Consolidated list of mitigation measures - Dillwynia Correctional Centre

Issue Mitigation measure Traffic, parking and access Construction TPA1 A Construction Traffic Management Plan (CTMP) be prepared for DCC prior to the

commencement of works with site induction for construction personnel being undertaken to outline the requirements of the CTMP. It would detail the management measures to be implemented to minimise the potential for impacts on the operation of the surrounding road and transport environment. It would include the following information and management measures as a minimum: • A Traffic Control Plan (TCP) would be developed in accordance with RMS

Traffic Control at Works Sites (RTA, 2010) • Hours of operation, heavy vehicle volumes (numbers) and routes,

loading/unloading areas and site access and security arrangements, temporary warning, guidance and information signage, and appropriate traffic control devices.

• Vehicles would be permitted to travel past the work site with traffic signage in accordance with the TCP.

• Construction vehicle movements would be minimised during the AM and PM peak hour and during the middle of the day on the weekend, when higher traffic volumes occur within the road network.

• Construction vehicles are to arrive JMCC from the northeast from The Northern Road.

• Construction vehicles are to exit JMCC to the left to avoid delays at The Northern Road/JMCC site access road intersection, particularly during the weekday evening peak hour.

• Site access is be restricted to authorised personnel only and existing employees on site.

• Construction vehicles would be parked within areas designated for construction parking only.

• Pedestrian access to and around construction areas would be maintained at all times.

• Specific road hazards would be identified, including but not limited to wet weather, pedestrian and bicycle riders, general traffic and bus infrastructure.

• The timing of deliveries accessing JMCC would be programmed to ensure there is sufficient space within the complex to accommodate deliveries, and there is minimal potential for impacts to operation of all the facilities in JMCC.

• Designated queuing and idling areas would be determined near JMCC to minimise disruption to the local community.

• Adequate sight lines would be provided to allow for safe entry and exit from the site.

• All roads would be kept clean and free of dust and mud at all times. Where material is tracked onto sealed roads at any time, it would be removed immediately so that road pavements are kept safe and trafficable.

• Any roads, kerbs, gutters and footpaths damaged as a result of construction would be restored to their pre-construction condition.

• All traffic would comply with all applicable traffic laws and regulations including speed limits.

• All roads and accesses would be rehabilitated post construction to a standard equivalent to, or better than, the preconstruction condition.

• Community notification on any proposed changes to road and pedestrian network

Operation TPA2 Monitoring should be undertaken of the overall parking area to ensure suitable

allocation has been provided for both staff and visitors. TPA3 Consideration would be given to the development of a Transport Access Guide

(TAG) summarising alternate transport options for staff and visitors to access the JMCC.

Noise and vibration Construction NV1 Working hours



Issue Mitigation measure • Noise generating construction activities should be undertaken in accordance

within the assessed hour, being: 7 am to 6 pm Monday to Friday; 7 am to 5 pm Saturdays; and no work on Sundays or Public Holidays.

• Work outside normal hours should only comprise: the delivery of materials outside normal hours requested by police or other authorities for safety reasons; and emergency work to avoid the loss of lives and/or property.

• A noise and vibration management sub-plan would be prepared and implemented as part of the CEMP. This would include permissible construction hours, management of construction traffic, a response for noise complaints (including a noise monitoring program if required), the noise and vibration criteria at sensitive receivers and mitigation measures.

NV2 Inductions for the work crew would include the specific noise issues and mitigation measures required for the site. The induction would include: • all relevant standard noise mitigation measures • relevant licence and approval conditions • permissible hours of work • location of any sensitive receivers that may exceed the construction noise

management level • construction employee parking areas • designated loading/ unloading areas and procedures • site opening/closing times (including deliveries) • behavioural practices that minimise noise • avoiding dropping materials from height and avoiding metal to metal contact of

materials. NV3 The distance between plant and equipment and any sensitive receiver should be

maximised where practicable. NV4 Vehicles, plant and equipment would be regularly maintained and kept in good

operating condition. Machines found to produce excessive noise should be removed from construction site or stood down until repairs or modifications can be made.

NV5 Plant should be turned off when not in use. For example, trucks should not be left idling if not operational.

NV6 Noise emitting plant to be directed away from sensitive receivers where possible. Plan worksites and activities to minimise noise emission.

NV7 Plan traffic flow, parking and loading areas to minimise reversing movements within the site.

NV8 Ensure deliveries occur during standard construction hours, where possible. NV9 Where possible, use structures to shield residential receivers from noise within the

construction site. NV10 Where possible, limit impact piling to standard construction hours. NV11 Consultation and cooperation with the nearest sensitive receivers will assist in

minimising uncertainty, misconceptions and adverse reactions to noise. The following community relation measures would be implemented: • Department of Justice would establish contact with residents affected by

construction noise and communicate the construction program and progress on a regular basis, particularly when noise generating activities are planned. Communication with the local community would be maintained throughout the construction period.

• Department of Justice would provide a community liaison phone number and permanent site contact so that noise complaints can be received and addressed in a timely manner.

• Upon receipt of a noise complaint, monitoring would be undertaken and reported as soon as possible. If exceedances are detected, the situation would be reviewed in order to identify means to attempt to reduce the impact to acceptable levels.

Operation NV12 Ensure use of outdoor areas is scheduled within the day time period only. NV13 Minimise shouting or other loud noises from inmates or staff while outdoors. NV14 Avoid slamming doors and gates. NV15 No music should be played in outdoor areas. NV16 Minimise usage of PA system and only use when necessary for announcements. NV17 Volume should be adjusted to a suitable level.



Issue Mitigation measure NV18 Do not use the PA system to broadcast music. NV19 If any PA systems are proposed within the outdoor field and recreational areas,

assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the PA systems does not exceed the relevant noise criteria.

NV20 If any large mechanical plant is proposed externally, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the units do not exceed the relevant noise criteria.

NV21 Any complaints associated with the operation of the upgraded facility would be investigated as soon as practicable.

Biodiversity Construction B1 Machinery carrying out clearing of the edge vegetation would only operate from the

grassed area, in order to minimise disturbance to the newly established vegetation edge.

B2 The shrubs and trees which require removal should be removed carefully, in accordance with relevant requirements and guidelines including Safe Work Australia (2016).

B3 If appropriate, the felled trees should be mulched and spread over the TPZ of retained trees or regeneration areas.

B4 Trees in the following areas which are proposed for retention may require protection during tree clearing, excavation and construction: • Existing car park; • Newly established vegetation edge adjacent to car park extension; • Line of Spotted Gums adjacent to Construction Compound • Two Scribbly Gums to the west of the proposed sewer and macerator.

B5 The extent of protective fencing should be determined at the discretion of the Project Arborist.

B6 Fencing should be installed prior to clearing or excavation and should be kept in place during construction. An adequate TPZ should be established by the Project Arborist who should then supervise installation of appropriate protective fencing. An example of suitable protective fencing is indicated in Appendix E of Appendix F.

B7 The following actions should not be permitted within TPZs: • Storage of materials, plants or equipment • Installation of site sheds or portable toilets • Excavations, trenching, ripping or cultivation of soils • Modification of existing soil level or addition of fill materials • Disposal of waste materials and chemicals (both solid or liquid) • Mechanical removal of vegetation • Pedestrian or vehicular movement.

B8 Any root pruning required within the TPZ should be approved by the Project Arborist and any digging and pruning of roots (only roots < 5 cm may be pruned) within the TPZ should be conducted by hand for a clean cut.

B9 To protect soil within the TPZ, a layer of organic mulch may be applied (no more than 75 mm thick). Any mulch used should comply with the Australian Standard – composts, soil conditioners and mulches AS4454-2012 (Standards Australia 2012).

B10 A Project Arborist should supervise works and inspect excavated areas adjacent to retained trees, in order to assess the amount of tree fine roots affected, the loss of which may affect tree health and the amount of supporting roots affected, the loss of which may affect tree stability. The project arborist would then determine appropriate ameliorative measures for retained trees (e.g. canopy reduction, irrigation, fertiliser applications) or provide recommendations for tree removal if required.

B11 Temporary fencing should be installed along the new vegetation edge to prevent disturbance of the Shale Gravel Transition Forest TEC adjoining the construction footprint in the proposed car park extension area. Machinery access should be restricted to the grassed area to the south of the vegetation patch.

B12 All workers should be inducted prior to commencing work and the conservation significance of the adjacent vegetation should be stressed.

B13 The newly created edge would be susceptible to weed encroachment. A thick belt of appropriate shrub species should be planted as soon as possible after the



Issue Mitigation measure disturbance. The plantings should be monitored over the next twelve months and any weed species which germinate or re-sprout should be removed.

B14 The Landscape Plan for the proposal should only include appropriate indigenous native species which are representative of the surrounding native vegetation types. Ideally, the plants should be obtained from a local bush regeneration nursery and all plants should be of local provenance. Under no circumstances should cultivars or commercially produced hybrids be planted, in the interests of minimising genetic pollution.

B15 If any threatened species (flora or fauna) is discovered during the works, stop work immediately and notify the site’s environmental representative. Work will only recommence once the impact on the species has been assessed and appropriate control measures provided.

Bushfire hazard Construction BH1 Hot work (such as welding) outside during dry weather or periods of prolonged

bushfire risk would be avoided. BH2 In the event of a bushfire, work is to cease and workers evacuated in accordance

with standard emergency response procedures. BH3 Design of above ground items would be in accordance with the bushfire protection

measures included in the RFS guideline Planning for Bushfire Protection 2006. BH4 Shrubs would not be planted close to any buildings. BH5 Fences, sheds and structures would be constructed of non-flammable material and

be clear of trees and shrubs. BH6 Ensure fire hydrants are serviceable and available. Operation BH7 General site maintenance would be undertaken as per existing maintenance

procedures in order to minimise bushfire risk. BH8 All grasses are would be maintained at a height of a maximum 50 mm. BH9 The crowns of trees would be separated where practical such that there is a clear

separation distance between adjoining tree crowns. BH10 Lower branches of trees would be pruned to stop a surface fire spreading to the

canopy of the trees. BH11 Trees or shrubs would be regularly cleared of any dead material. BH12 Gas cylinders would be stored in an area that is clear of all flammable material and

securely tethered with non-flammable fastenings to prevent toppling over. BH13 Roof gutters would be cleaned regularly to ensure they are free of leaves and other

combustible material. BH14 Driveways and access ways would allow for the safe passage for emergency

vehicles to all buildings and assets on the land. BH15 In the event of a bushfire, emergency management and evacuation would be

undertaken in accordance with the John Morony Correctional Complex Bushfire Emergency Management and Evacuation Plan.

Soils, erosion and water quality Site preparation SW1 Due to the presence of buried tyres within the fill profile, stripped topsoil and root

affected soils would be stockpiled separately as they are considered unsuitable for reuse as engineered fill or for the foundation of proposed new buildings. The topsoil and root affected soils may be reused for landscaping purposes.

Construction SW2 • A soils, erosion and water quality management sub-plan would be prepared and

implemented as part of the CEMP. It would detail the measures to minimise the potential for soil and water quality impacts, and would include the following measures as a minimum:

• Sediment and erosion control devices would be installed around work sites and maintained to minimise the transport of sediment in accordance with Managing Urban Stormwater, Soils and Construction, Volume 1 (Landcom, 2004). These devices would be inspected weekly and immediately after rainfall to ensure their effectiveness over the duration of the works. Any damage to erosion and sediment controls would be rectified immediately.



Issue Mitigation measure • The area of exposed surfaces would be minimised and disturbed areas would be

stabilised progressively to ensure that no areas remain unstable for any extended length of time.

• Prior to transfer and reuse at any other site than at the DCC site, excess spoil would be tested for suitability, including the potential for spoil to be contaminated with asbestos containing material.

• Should excess spoil need to be removed off-site, a more detailed waste classification and chemical assessment will need to be conducted to allow appropriate classification and disposal of the materials.

• Prior to construction works commencing, soil would be assessed for dryland salinity as dryland salinity can have an adverse impact on construction materials. Construction contractor would undertake appropriate measures regarding construction materials in based on the result of the soil assessment.

• Wherever possible, soil and sediment that accumulates in erosion and sediment control structures during site restoration would be reused unless it is contaminated or otherwise inappropriate for reuse.

• Work would be ceased in the immediate vicinity of any areas of suspected contamination that are identified prior to or during work unless specific provisions and procedures have been put in place to satisfactorily address these issues.

• Vehicle and machinery movement would be confined to designated roads, tracks, pathways and work areas. Designated lay-down areas would be selected to minimise erosion or vegetation damage.

• Work would be ceased during heavy rainfall events when there is a risk of sediment loss off-site or ground disturbance due to water logged conditions.

• Any groundwater or leachate intercepted by the proposal would be treated appropriate for the intended disposal method. No groundwater (or leachate) is to be discharged from site into adjacent areas or stormwater systems prior to treatment in accordance with the relevant regulatory requirements.

• Equipment, plant and materials would be placed in designated areas where they are least likely to cause erosion.

• Following completion of work, land surfaces would be restored to as close as possible to pre-existing conditions.

SW3 Buried tyres, should they be exposed, would be piled separately and managed in accordance with waste management measures provided in section 7.7.6.

Socio-economic Construction SE1 Mitigation measures included in Sections 7.2, 7.7.3 and 7.1 would be implemented

to minimise impacts on noise, air quality and transport. SE2 A communication and stakeholder engagement strategy would be implemented to

manage community and stakeholder concerns associated with construction. The strategy would communicate construction-related impacts would be managed, particularly relating security of the facility during construction.

SE3 A complaints management procedure would be prepared to allow members of the community to address any concerns during construction.

SE4 Notification regarding construction activities would be provided on site as well as on the CSNSW website, advising visitors of any alternative access arrangements in place and to exercise patience when visiting the DCC during construction works.

Operation SE5 Ongoing communication and stakeholder engagement strategy would be

maintained to establish a positive relationship with the local community. SE6 A communication and stakeholder management strategy would be prepared to

establish a positive image of the facility on the local community. Aboriginal heritage Construction AH1 An unexpected finds procedure would be prepared and included in the CEMP to

define the actions to be taken in the event that any previously unidentified Aboriginal heritage/archaeological items are uncovered during construction works. This would include stopping work in the vicinity of the find, and seeking advice from a suitably qualified heritage consultant/archaeologist (and in consultation with the relevant division of OEH, as required). Works in the vicinity of the find would not re-commence until clearance has been received from the heritage consultant/archaeologist.



Issue Mitigation measure Non-Aboriginal heritage Construction NAH1 If potential unexpected non-Aboriginal objects or potential relics are located during

works, the unexpected finds procedure would need to be implemented. This would include notifying regulatory agencies and assessment by an archaeologist to recommend what further investigation or approvals are required.

Air quality Construction AQ1 A dust quality management sub-plan would be prepared and implemented as part of

the CEMP. It would detail the measures to minimise the potential for air quality impacts, and would include the following measures as a minimum: • All plant and machinery would be fitted with emission control devices complying

with relevant Australian Standards. • Machinery would be turned off when not in use and not left to idle for prolonged

periods. • Dust generation would be monitored visually, and where required, dust control

measures such as water spraying would be implemented to control the generation of dust.

• Any waste (such as excavated spoil) produced on-site would be stored appropriately to reduce the production of dust.

• Materials transported to and from JMCC would be covered to reduce dust generation in transit.

• Access points would be inspected to determine whether sediment is being transferred to the surrounding road network. If required, sediment would be promptly removed from roads to minimise dust generation.

• Shade cloth would be fastened to the perimeter fence on the construction site to minimise dust transported from OMMPCC site during construction.

• Stabilisation of any excavated areas would occur as soon as practicable. • Fixed hoses would be used to dampen exposed surfaces to minimise dust

generation, where required. Waste generation and management Construction W1 All soil excavated from site would be tested and subsequently managed in

accordance with the Waste Classification Guidelines (EPA, 2014). Only spoil which meets the specified classification would be used for on-site reuse.

W2 All waste, including any uncovered tyres, is to be taken to a licensed waste disposal facility.

W3 All spoil reused on site as engineered fill is to be clean (i.e. free of organics and inclusions greater than 75 millimetres size) and free of contaminant.

W4 Waste (if unable to be reused or recycled) would be classified and disposed of in accordance with the Waste Classification Guidelines (EPA 2014).

W5 Waste would be placed in skip bins positioned in defined area(s) onsite or within the site compound (if required).

W6 Surplus construction materials would be avoided through appropriate planning of the construction works.

W7 Waste would be recycled in accordance with the NSW Government’s Waste Reduction and Purchasing Policy.

W8 Waste receptacles for recyclable and non-recyclable waste are to be provided at each construction site for waste generated by construction workers.

W9 Smoking would be limited to defined areas and provide butt bins for construction workers.

W10 The EPA would be notified immediately of any pollution incidents or harm to the environment as defined under Part 5.7 of the POEO Act.

Hazard and risk Construction HR1 If unexpected contamination is encountered during excavation, the contaminated

material would be stockpiled separately and the Site Project Manager would be notified.



Issue Mitigation measure HR2 If asbestos containing material is found, the removal of this material would be

undertaken by an appropriately licenced contractor as per WorkCover NSW requirements and current guidelines.

HR3 Any asbestos or tyres found at the site would be registered and notified using the EPA’s online tracking system, WasteLocate.

HR4 A work, health and safety management plan, and safe work method statements would be developed in accordance with regulatory requirements including the details of required personal protective equipment to be used by workers.

HR5 All construction work areas would be isolated from the general public. HR6 The construction contractor would ensure that the construction site is secure at all

times and take reasonable actions to prevent entry by unauthorised persons. HR7 All construction staff would be screened and subject to criminal record checks prior

to arrival at the site.



9.3 Consolidated list of mitigation measures – Outer Metropolitan Multi Purpose Correctional Centre

Issue Mitigation measure Traffic, parking and access Construction TTA1 A Construction Traffic Management Plan (CTMP) be prepared for OMMPCC prior to

the commencement of works with site induction for construction personnel being undertaken to outline the requirements of the CTMP. It would detail the management measures to be implemented to minimise the potential for impacts on the operation of the surrounding road and transport environment. It would include the following information and management measures as a minimum: • A Traffic Control Plan (TCP) would be developed in accordance with RMS Traffic

Control at Works Sites (RTA, 2010) • Hours of operation, heavy vehicle volumes (numbers) and routes,

loading/unloading areas and site access and security arrangements, temporary warning, guidance and information signage, and appropriate traffic control devices.

• Vehicles would be permitted to travel past the work site with traffic signage in accordance with the TCP.

• Construction vehicle movements would be minimised during the AM and PM peak hour and during the middle of the day on the weekend, when higher traffic volumes occur within the road network.

• Construction vehicles are to arrive JMCC from the northeast from The Northern Road.

• Construction vehicles are to exit JMCC to the left to avoid delays at The Northern Road/JMCC site access road intersection, particularly during the weekday evening peak hour.

• Site access is be restricted to authorised personnel only and existing employees on site.

• Construction vehicles would be parked within areas designated for construction parking only.

• Pedestrian access to and around construction areas would be maintained at all times.

• Specific road hazards would be identified, including but not limited to wet weather, pedestrian and bicycle riders, general traffic and bus infrastructure.

• The timing of deliveries accessing JMCC would be programmed to ensure there is sufficient space within the complex to accommodate deliveries, and there is minimal potential for impacts to operation of all the facilities in JMCC.

• Designated queuing and idling areas would be determined near JMCC to minimise disruption to the local community.

• Adequate sight lines would be provided to allow for safe entry and exit from the site.

• All roads would be kept clean and free of dust and mud at all times. Where material is tracked onto sealed roads at any time, it would be removed immediately so that road pavements are kept safe and trafficable.

• Any roads, kerbs, gutters and footpaths damaged as a result of construction would be restored to their pre-construction condition.

• All traffic would comply with all applicable traffic laws and regulations including speed limits.

• All roads and accesses would be rehabilitated post construction to a standard equivalent to, or better than, the preconstruction condition.

• Community notification on any proposed changes to road and pedestrian network. Operation TTA2 Monitoring should be undertaken of the overall parking area to ensure suitable

allocation has been provided for both staff and visitors TTA3 Consideration would be given to the development of a Transport Access Guide

(TAG) summarising alternate transport options for staff and visitors to access the JMCC



Issue Mitigation measure Noise and vibration Construction NV1 Noise generating construction activities should be undertaken in accordance within

the assessed hour, being: 7 am to 6 pm Monday to Friday; 7 am to 5 pm Saturdays; and no work on Sundays or Public Holidays.

NV2 Work outside normal hours should only comprise: the delivery of materials outside normal hours requested by police or other authorities for safety reasons; and emergency work to avoid the loss of lives and/or property.

NV3 A noise and vibration management sub-plan would be prepared and implemented as part of the CEMP. This would include permissible construction hours, management of construction traffic, a response for noise complaints (including a noise monitoring program if required), the noise and vibration criteria at sensitive receivers and mitigation measures.

NV4 Inductions for the work crew would include the specific noise issues and mitigation measures required for the site. The induction would include: • all relevant standard noise mitigation measures • relevant licence and approval conditions • permissible hours of work • location of any sensitive receivers that may exceed the construction noise

management level • construction employee parking areas • designated loading/ unloading areas and procedures • site opening/closing times (including deliveries) • behavioural practices that minimise noise • avoiding dropping materials from height and avoiding metal to metal contact of

materials. NV5 The distance between plant and equipment and any sensitive receiver should be



NV7 Plant should be turned off when not in use. For example, trucks should not be left idling if not operational.

NV8 Noise emitting plant to be directed away from sensitive receivers where possible. Plan worksites and activities to minimise noise emission.

NV9 Plan traffic flow, parking and loading areas to minimise reversing movements within the site.

NV10 Ensure deliveries occur during standard construction hours, where possible. NV11 Where possible, use structures to shield residential receivers from noise within the

construction site. NV12 The distance between plant and equipment and any sensitive receiver should be



NV14 Consultation and cooperation with the nearest sensitive receivers will assist in minimising uncertainty, misconceptions and adverse reactions to noise. The following community relation measures would be implemented: • Department of Justice would establish contact with residents affected by

construction noise and communicate the construction program and progress on a regular basis, particularly when noise generating activities are planned. Communication with the local community would be maintained throughout the construction period.

• Department of Justice would provide a community liaison phone number and permanent site contact so that noise complaints can be received and addressed in a timely manner.

• Upon receipt of a noise complaint, monitoring would be undertaken and reported as soon as possible. If exceedances are detected, the situation would be reviewed in order to identify means to attempt to reduce the impact to acceptable levels.



Issue Mitigation measure Operation NV15 Any complaints associated with the operation of the upgraded facility would be

investigated as soon as practicable. NV16 Outdoor field and recreational areas:

• Ensure use of outdoor areas is scheduled within the day time period only. • Minimise shouting or other loud noises from inmates or staff while outdoors. • Avoid slamming doors and gates. • No music should be played in outdoor areas.

NV17 Public announcement (PA) system • Minimise usage of PA system and only use when necessary for announcements. • Volume should be adjusted to a suitable level. • Do not use the PA system to broadcast music. • If any PA systems are proposed within the outdoor field and recreational areas,

assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the PA systems does not exceed the relevant noise criteria.

NV18 If any large mechanical plant is proposed externally, assistance of an acoustic consultant should be sought during the detailed design stage of the project to ensure the noise emission from the units do not exceed the relevant noise criteria.

Biodiversity Construction B1 The shrubs and trees which require removal should be removed carefully, in

accordance with relevant requirements and guidelines including Safe Work Australia (2016).

B2 If appropriate, the felled trees should be mulched and spread over the TPZ of retained trees or regeneration areas.

B3 Those trees proposed for retention within the OMMPCC should be protected by temporary fencing. Fencing should be installed prior to demolition and should be kept in place during excavation and construction. Fencing should also be considered, at the discretion of the Project Arborist, along the edge of the access road, to the north of the car park, if any road widening is proposed, and between the construction compound and the line of trees, if works and structures are located less than 5 m from the bases of the trees. The extent of the protective fencing should follow as closely as possible the recommended TPZ, as indicated in the tree schedule at Appendix C of Appendix F. The protective fencing should be installed under the supervision of the Project Arborist.

B4 The following actions should not be permitted within TPZs: • Storage of materials, plants or equipment • Installation of site sheds or portable toilets • Excavations, trenching, ripping or cultivation of soils • Modification of existing soil level or addition of fill materials • Disposal of waste materials and chemicals (both solid or liquid) • Mechanical removal of vegetation • Pedestrian or vehicular movement.

B5 Any root pruning required within the TPZ should be approved by the Project Arborist and any digging and pruning of roots (only roots < 5cm may be pruned) within the TPZ should be conducted by hand for a clean cut.

B6 To protect soil within the TPZ, a layer of organic mulch may be applied (no more than 75 mm thick). Any mulch used should comply with the Australian Standard – composts, soil conditioners and mulches AS4454-2012 (Standards Australia 2012).

B7 A Project Arborist should supervise works and inspect excavated areas adjacent to retained trees, in order to assess the amount of fine tree roots affected, the loss of which may affect tree health and the amount of supporting roots affected, the loss of which may affect tree stability. The project arborist would then determine appropriate ameliorative measures for retained trees (e.g. canopy reduction, irrigation, fertiliser applications) or provide recommendations for tree removal if required.

B8 The Landscape Plan for the proposal should include appropriate indigenous native species which are representative of the surrounding native vegetation types.

B9 If any threatened species (flora or fauna) is discovered during the works, stop work immediately and notify the site’s environmental representative. Work will only



Issue Mitigation measure recommence once the impact on the species has been assessed and appropriate control measures provided.

Bushfire hazard Construction BH1 Hot work (such as welding) outside during dry weather or periods of prolonged

bushfire risk would be avoided. BH2 In the event of a bushfire, work is to cease and workers evacuated in accordance

with standard emergency response procedures. BH3 Design of above ground items would be in accordance with the bushfire protection

measures included in the RFS guideline Planning for Bushfire Protection 2006. BH4 Shrubs would not be planted close to any buildings. BH5 Fences, sheds and structures would be constructed of non-flammable material and

be clear of trees and shrubs. BH6 Ensure fire hydrants are serviceable and available. Operation BH7 General site maintenance would be undertaken as per existing maintenance

procedures in order to minimise bushfire risk. BH8 All grasses are would be maintained at a height of a maximum 50 mm. BH9 The crowns of trees would be separated where practical such that there is a clear

separation distance between adjoining tree crowns. BH10 Lower branches of trees would be pruned to stop a surface fire spreading to the

canopy of the trees. BH11 Trees or shrubs would be regularly cleared of any dead material. BH12 Gas cylinders would be stored in an area that is clear of all flammable material and

securely tethered with non-flammable fastenings to prevent toppling over. BH13 Roof gutters would be cleaned regularly to ensure they are free of leaves and other

combustible material. BH14 Driveways and access ways would allow for the safe passage for emergency

vehicles to all buildings and assets on the land. BH15 In the event of a bushfire, emergency management and evacuation would be

undertaken in accordance with the John Morony Correctional Complex Bushfire Emergency Management and Evacuation Plan.

Soils, Erosion and water quality Construction SW1 A soils, erosion and water quality management sub-plan would be prepared and

implemented as part of the CEMP. It would detail the measures to minimise the potential for soil and water quality impacts, and would include the following measures as a minimum • Sediment and erosion control devices would be installed around work sites and

maintained to minimise the transport of sediment in accordance with Managing Urban Stormwater, Soils and Construction, Volume 1 (Landcom, 2004). These devices would be inspected weekly and immediately after rainfall to ensure their effectiveness over the duration of the works. Any damage to erosion and sediment controls would be rectified immediately.

• The area of exposed surfaces would be minimised and disturbed areas would be stabilised progressively to ensure that no areas remain unstable for any extended length of time.

• Wherever possible, soil and sediment that accumulates in erosion and sediment control structures during site restoration would be reused unless it is contaminated or otherwise inappropriate for reuse.

• Work would be ceased in the immediate vicinity of any areas of suspected contamination that are identified prior to or during work unless specific provisions and procedures have been put in place to satisfactorily address these issues.

• Vehicle and machinery movement would be confined to designated roads, tracks, pathways and work areas. Designated lay-down areas would be selected to minimise erosion or vegetation damage.

• Work would be ceased during heavy rainfall events when there is a risk of sediment loss off-site or ground disturbance due to water logged conditions.

• Any groundwater or leachate intercepted by the proposal would be treated appropriate for the intended disposal method. No groundwater (or leachate) is to



Issue Mitigation measure be discharged from site into adjacent areas or stormwater systems prior to treatment in accordance with the relevant regulatory requirements.

• Equipment, plant and materials would be placed in designated areas where they are least likely to cause erosion.

• Following completion of work, land surfaces would be restored to as close as possible to pre-existing conditions.

SW2 Design of stormwater drainage system would take into account the occurrence of plastic clay reactive soils on site that are prone to shrink-swell movement due to seasonal moisture change.

SW3 Treatment to fill batters and slope cuts are to be provided to avoid soil erosion problems

Socio-economic Construction SE1 Mitigation measures included in Sections 8.2, 8.7.3 and 8.1 would be implemented

to minimise impacts on noise, air quality and transport. SE2 A communication and stakeholder engagement strategy would be implemented to

manage community and stakeholder concerns associated with construction. The strategy would communicate construction-related impacts would be managed, particularly relating security of the facility during construction.

SE3 A complaints management procedure would be prepared to allow members of the community to address any concerns during construction.

SE4 Notification regarding construction activities would be provided on site as well as on the CSNSW website, advising visitors of any alternative access arrangements in place and to exercise patience when visiting the OMMPCC during construction works.

Operation SE5 Ongoing communication and stakeholder engagement strategy would be

maintained to establish a positive relationship with the local community. SE6 A communication and stakeholder management strategy would be prepared to

establish a positive image of the facility on the local community. Aboriginal heritage Construction AH1 An unexpected finds procedure would be prepared and included in the CEMP to

define the actions to be taken in the event that any previously unidentified Aboriginal heritage/archaeological items are uncovered during construction works. This would include stopping work in the vicinity of the find, and seeking advice from a suitably qualified heritage consultant/archaeologist (and in consultation with the relevant division of OEH, as required). Works in the vicinity of the find would not re-commence until clearance has been received from the heritage consultant/archaeologist.

Non-Aboriginal heritage Construction NAH1 If potential unexpected non-Aboriginal objects or potential relics are located during

works, the unexpected finds procedure would need to be implemented. This would include notifying regulatory agencies and assessment by an archaeologist to recommend what further investigation or approvals are required.

Air quality Construction AQ1 A dust management plan would be prepared and implemented as part of the CEMP.

It would detail the measures to minimise the potential for air quality impacts, and would include the following measures as a minimum: • All plant and machinery would be fitted with emission control devices complying

with relevant Australian Standards. • Machinery would be turned off when not in use and not left to idle for prolonged

periods. • Dust generation would be monitored visually, and where required, dust control

measures such as water spraying would be implemented to control the generation of dust.

• Any waste (such as excavated spoil) produced on-site would be stored appropriately to reduce the production of dust.



Issue Mitigation measure • Materials transported to and from the site would be covered to reduce dust

generation in transit. • Access points would be inspected to determine whether sediment is being

transferred to the surrounding road network. If required, sediment would be promptly removed from roads to minimise dust generation and shade cloth would be fastened to the perimeter fence to minimise dust transported from the site during construction.

• Stabilisation of any excavated areas would occur as soon as practicable. • Fixed hoses would be used to dampen exposed surfaces to minimise dust

generation, where required. Waste management Construction WM1 A construction waste management sub-plan would be prepared and implemented

as part of the CEMP. It would detail the measures to manage waste during construction, and would include the following measures as a minimum: • All soil excavated from site would be tested and subsequently managed in

accordance with the Waste Classification Guidelines (EPA, 2014). Only spoil which meets the specified classification would be used for on-site reuse.

• All waste, including excess spoil, is to be recycled if practicable, or alternatively taken to a licensed waste disposal facility.

• All spoil reused on site as engineered fill is to be clean (i.e. free of organics and inclusions greater than 75 millimetres size) and free of contaminant.

• Classify and dispose of waste (if unable to be reused or recycled) in accordance with the Waste Classification Guidelines (EPA 2014).

• Ensure waste is placed in skip bins positioned in defined area(s) onsite or within the site compound (if required).

• Avoid surplus construction materials through appropriate planning of the construction works.

• Recycle waste in accordance with the NSW Government’s Waste Reduction and Purchasing Policy.

• Waste receptacles for recyclable and non-recyclable waste are to be provided at each construction site for waste generated by construction workers.

• Limit smoking to defined areas and provide butt bins for construction workers. • The EPA is not be notified immediately of any pollution incidents or harm to the

environment as defined under Part 5.7 of the POEO Act. Hazards and risk Construction HR1 Spoil imported from another site (e.g. DCC site) would be tested prior to being

reused at OMMPCC site as fill. HR2 If unexpected contamination is encountered during excavation, the contaminated

material would be stockpiled separately and the Site Project Manager would be notified

HR3 If asbestos containing material is found, the removal of this material would be undertaken by an appropriately licenced contractor as per WorkCover NSW requirements and current guidelines

HR4 Any asbestos or tyres found at the site would be registered and notified using the EPA’s online tracking system, WasteLocate

HR5 A work, health and safety management plan, and safe work method statements would be developed in accordance with regulatory requirements including the details of required personal protective equipment to be used by workers.

HR6 All construction work areas would be isolated from the general public. HR7 The construction contractor would ensure that the construction site is secure at all

times and take reasonable actions to prevent entry by unauthorised persons. HR8 Construction works undertaken within the secure perimeter of the OMMPCC would

be further isolated through the provision of additional security fence and surveillance equipment where appropriate

HR9 Existing risk management and emergency management plans for the facility would be reviewed, including for emergency access/egress from the new construction work area.

HR10 All construction staff would be screened and subject to criminal record checks prior to arrival at the site.



10. Conclusion 10.1 Justification of the proposal

The proposal forms part of the NSW Government’s Prison Bed Capacity Program.

As noted in section 3.3.2, there is a demand for additional female remand beds in the Sydney metropolitan area. The lack of available remand and reception facilities has contributed to a shortage of front-end maximum-security beds and increased transfers of inmates to regional locations where beds are available. The proposal would provide additional beds where they are needed at DCC.

The proposal would provide CSNSW with the capability to safely and securely receive newly sentenced and remanded inmates into the NSW Correctional system.

The proposal would also deliver the DCC and OMMPCC necessary infrastructure to ensure that the centre is capable of supporting the increase in inmate population, and maintain the safe, secure and efficient reception, assessment, and screening of newly received inmates to the CSNSW system.

10.2 Summary of REF findings

The REF has considered the potential impacts of the proposal. It has been prepared in accordance with Part 5 of the EP&A Act, and in particular, the requirements of section 5.5 of the Act, and clause 228 of the Regulation. The REF has documented the potential environmental impacts of the proposal, considering both potential positive and negative impacts, and recommending management and mitigation measures to protect the environment where required.

10.2.1 Clause 228 considerations

Clause 228 of the Regulation specifies the matters that must be taken into account, for the purposes of Part 5 of the Act, when consideration is being given to the likely impact of an activity on the environment. The potential impacts of the proposal have been considered in sections 7.1 to 7.7 of the REF for DCC and sections 8.1 to 8.7 for OMMPCC. The Clause 228 matters and how they relate to the proposal are considered in Table A-1 of Appendix A.

10.2.2 Ecologically sustainable development

Department of Justice is committed to ensuring that its projects are implemented in a manner that is consistent with the principles of sustainable development. These principles would be incorporated into the management systems for the proposal.

Table A-2 summarises how the principles of ecologically sustainable development adopted by the EP&A Act have been addressed by the REF process.

10.2.3 Significance of impacts

Whilst some potentially negative impacts may result from the proposal, these impacts would be short-term and localised and are not considered to be significant. Sections 9.2 and 9.3 of the REF provides the mitigation measures that would be implemented to reduce the potential for impacts and manage the environmental performance of the proposal.

10.3 Conclusion

The REF identifies that the proposal would have the potential for both positive and negative impacts, and it identifies mitigation measures to reduce or manage the negative impacts.



Environmental investigations were undertaken during preparation of the REF to assess the potential environmental impacts.

There are considered to be no significant environmental issues associated with the proposal.

Any potential adverse impacts resulting from the proposal are considered manageable through the implementation of mitigation measures in Sections 9.2 and 9.3

In conclusion, the proposal is needed in order to address demand pressures on the correctional system that has resulted in a number of inefficiencies and operational challenges. It is considered that the adverse environmental impacts would be generally short-term and localised in nature. With the adoption and implementation of the proposed mitigation and management measures listed in Sections 9.2 and 9.3, the potential environmental impacts of the proposal would be adequately mitigated and managed, and are not considered to be significant.

10.4 Recommendation

It is recommended that environmental management plans be developed prior to commencement of the construction and demolition phases of the proposal, incorporating the mitigation measures outlined in Sections 9.2 and 9.3 of this REF.



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GHD Level 3 22 Giffnock Avenue T: 61 2 9239 7100 F: 61 2 9239 7199 E: [email protected]

© GHD 2018 This document is and shall remain the property of GHD. The document may only be used for the purpose for which it was commissioned and in accordance with the Terms of Engagement for the commission. Unauthorised use of this document in any form whatsoever is prohibited. 2127421-13596/https://projects.ghd.com/oc/Sydney1/dojdilwyniaandommpcc/Delivery/Documents/2127421_REP_Dillwynia and OMMPCC REF.docx Document Status

Revision Author Reviewer Approved for Issue Name Signature Name Signature Date

Rev 0 D.Collaguazo G. Marshall G. Marshall 21/11/18

Rev 1 D.Collaguazo G. Marshall G. Marshall 30/11/18