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09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
Bathurst Correctional Centre ExpansionNSW Department of Justice09-Aug-2018
Bathurst CorrectionalCentre ExpansionNoise and Vibration Impact Assessment
AECOM Bathurst Correctional Centre Expansion
09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
Bathurst Correctional Centre ExpansionNoise and Vibration Impact Assessment
Client: NSW Department of JusticeABN: 11 005 693 553
Prepared byAECOM Australia Pty LtdLevel 21, 420 George Street, Sydney NSW 2000, PO Box Q410, QVB Post Office NSW 1230, AustraliaT +61 2 8934 0000 F +61 2 8934 0001 www.aecom.comABN 20 093 846 925
09-Aug-2018
Job No.: 60568012
AECOM in Australia and New Zealand is certified to ISO9001, ISO14001 AS/NZS4801 and OHSAS18001.
© AECOM Australia Pty Ltd (AECOM). All rights reserved.
AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. No otherparty should rely on this document without the prior written consent of AECOM. AECOM undertakes no duty, nor accepts any responsibility, to anythird party who may rely upon or use this document. This document has been prepared based on the Client’s description of its requirements andAECOM’s experience, having regard to assumptions that AECOM can reasonably be expected to make in accordance with sound professionalprinciples. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of whichmay not have been verified. Subject to the above conditions, this document may be transmitted, reproduced or disseminated only in its entirety.
AECOM Bathurst Correctional Centre Expansion
09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
Quality InformationDocument Bathurst Correctional Centre Expansion
Ref 60568012
Date 09-Aug-2018
Prepared by Tom Roseby
Reviewed by Gayle Greer
Revision History
Rev Revision Date DetailsAuthorised
Name/Position Signature
1 09-Aug-2018 Final Gayle Greer
AECOM Bathurst Correctional Centre Expansion
09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
Table of ContentsExecutive Summary 11.0 Introduction 2
1.1 Background and project summary 22.0 Site context and background 3
2.1 Project location 32.2 Surrounding land uses 3
3.0 Scope of work 43.1.1 Assessment receivers 6
3.2 Relevant policies and guidelines 64.0 Existing acoustic environment 8
4.1 Unattended noise monitoring 84.1.1 Instrumentation 84.1.2 Noise measurements 8
5.0 Construction noise and vibration criteria 105.1 Construction activity noise criteria 10
5.1.1 Interim Construction Noise Guideline 105.1.2 Sleep disturbance criteria 12
5.2 Construction traffic noise criteria 135.3 Construction vibration criteria 13
5.3.1 Structural damage 135.3.2 Human comfort 14
6.0 Operational Noise Criteria 166.1 Protection of the Environment Operations Act 1997 166.2 Noise Policy for Industry 16
6.2.1 Intrusive noise impacts 166.2.2 Protecting noise amenity 166.2.3 Sleep disturbance criteria 18
6.3 Road Noise Policy 187.0 Construction noise assessment 19
7.1 Construction stages and scheduling 197.2 Construction noise sources 207.3 Modelling and conditions 227.4 Construction airborne noise assessment 227.5 Construction traffic assessment 247.6 Construction vibration assessment 25
7.6.1 Predicted vibration – cosmetic damage 258.0 Mitigation measures 26
8.1 Recommended mitigation measures 268.2 Community consultation and complaints handling 29
9.0 Operational noise assessment and recommendations 309.1 Modelling methodology 30
9.1.1 Building services noise emission (plant and equipment) 309.1.2 Project traffic generation 32
9.2 Sleep disturbance 339.3 People in outdoor areas 34
9.3.1 Outdoor visitor courtyard 359.3.2 Basketball court, gymnasium and outdoor exercise areas 35
9.4 Predicted noise levels 379.5 Public Address System 38
10.0 Conclusions 39
Appendix AAcoustic Terminology A
Appendix BArchitectural Drawings B
Appendix CNoise Contour Maps C
AECOM Bathurst Correctional Centre Expansion
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Executive SummaryThe Bathurst Correctional Centre (existing centre) is located on the corner of Browning Street andBrooke Moore Avenue in the city of Bathurst, New South Wales (NSW). The existing centre is amedium and minimum security facility for male offenders with an operational capacity of approximately660 inmates (495 bed medium security and 165 bed minimum security), and approximately 211employees.
The NSW Department of Justice (DoJ) is proposing to construct and operate a 220 bed expansion tothe existing centre, along with associated infrastructure and services. The expansion would primarilybe located to the southeast of the existing centre on land owned by DoJ, and physically connected tothe existing centre. The additional 220 beds (consisting of two 110 cell blocks) would be for maximumsecurity inmates and include a ten bed segregation unit.
Long term unattended measurements have been conducted to establish the existing ambient andbackground noise environment at potentially affected receivers in the vicinity of the Project Area.
Environmental noise criteria for the operation of the Project have been determined based on theunattended measurements in accordance with the Environmental Protection Authority’s Noise Policyfor Industry (NPfI).
Construction noise criteria have been determined in accordance with the Environmental ProtectionAuthority’s Interim Construction Noise Guideline (ICNG).
Assumptions have been made regarding mechanical plant, car park traffic generation and inmates inoutdoor areas.
Construction noise levels are predicted to exceed the construction noise management levels at thenearest affected residential receivers. Reasonable and feasible noise control measures have beenrecommended. These include the preparation of a Construction Noise and Vibration ManagementPlan by the contractor, prior to commencement of construction activities.
The results of the operational noise assessment show that the noise levels due to mechanical plant,use of the car park and the inmates in outdoor areas during standard operation meet the project noisetrigger levels at all sensitive receivers.
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1.0 Introduction
1.1 Background and project summary
The Bathurst Correctional Centre (existing centre) is located on the corner of Browning Street andBrooke Moore Avenue in the city of Bathurst, New South Wales (NSW). The existing centre, whichopened in June 1888, is currently operated by Corrective Services NSW (CSNSW) and hasundergone a number of upgrades during its operation. The existing centre is a medium and minimumsecurity facility for male offenders with an operational capacity of approximately 660 inmates (495 bedmedium security and 165 bed minimum security), and approximately 211 employees. The existingcentre accepts inmates charged and convicted under NSW and/or Commonwealth legislation, andserves as a reception prison for Western NSW.
In recent years there has been an unprecedented and unanticipated rise in inmate numbers exceedingprevious projections. This has created demand pressures on the correctional system in NSW,resulting in inefficiencies and operational challenges.
The NSW Department of Justice (DoJ) are therefore proposing to construct and operate a 220 bedexpansion of the existing centre (proposed expansion), along with associated infrastructure andservices (the Project). The Project would primarily be located to the southeast of the existing centre onland owned by DoJ, and physically connected to the existing centre, within the Project Area (refer toFigure 1). The additional 220 beds (consisting of two 110 cell blocks) would be for maximum securityinmates and include a ten bed segregation unit. Other components of the Project include:
· Additional support buildings, including:
- gatehouse and master control room building;
- visitation centre;
- clinic/health and reception centre;
- industry stores building;
- education building;
- kitchen and laundry;
- general maintenance and bulk storage; and
- vehicle shed and fuel storage.
· A dedicated staff and visitor parking off Browning Street
· New and upgraded access roads external to the proposed expansion buildings
· New access road internal to the proposed expansion
· New fencing, and “sterile” zone
· A pedestrian access point (walkway lock) for medium security inmates through the existing brickwall into the proposed expansion
· A vehicle lock between the existing centre and proposed expansion
· Demolition of existing external building which houses a kitchen, laundry and storage rooms (“KBlock”)
· Decommissioning and removal of existing underground storage tanks
· External security systems (e.g. CCTV, perimeter detection, fence, etc.).
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2.0 Site context and background
2.1 Project location
The existing centre is located at the corner of Browning Street and Brooke Moore Avenue in thesuburb of Mitchell in Bathurst’s western edge. The site is located approximately two kilometres westof the Bathurst central business district and approximately 200 kilometres northwest of Sydney. Thesite is located on the following parcels of land owned by the DoJ:
· Lot 2 on DP110042 · Lot 154 on DP750357· Lot 150 on DP750357 · Lot 155 on DP750357· Lot 2 on DP125781 · Lot 190 on DP750357· Lot 3 on DP125781 · Lot 232 on DP750357· Lot 1 on DP134798 · Lot 1 on DP795564
The Project would generally occur on bolded lots above with the most significant works occurring onLot 155 on DP750357. Lot 155 primarily consists of land currently used as a sports field. The areabounded by the Site boundary is approximately 20 hectares.
The existing centre opened in 1888 and was originally comprised of a square compound with agatehouse and two watchtowers located at opposite corners. There was originally capacity for 320inmates in a single occupancy arrangement. Between 1958 and 1961, a new cell block wasconstructed outside the original centre walls with accommodation for 94 inmates.
Between the late 1970’s and early 1980’s a number of new buildings were constructed within a newbrick perimeter wall to the south west of the original compound. This expansion included buildings formedium security visits, crisis management, electronics industries and stores. Also at this time, a newservices block including the kitchen, amenities block and workshop was constructed to the southeastof the original compound walls. The services block would be demolished as part of the Project.
The existing centre is accessed from Browning Street at the north-western boundary. The existingcentre includes a number of accommodations and support buildings supporting the operation of thefacility. The historical entrance to the Site is via the James Barnet designed sandstone entry. Thehistorical Governor’s and Deputy Governor’s residences are located adjacent to the sandstone entrygate. Two carparks are located to the north and northeast of the main complex.
The southern half of the Site comprises a mixture of gently undulating, cleared and vegetated landsurrounding the existing secure fenced area. The southern boundary of the Site hosts the GirrawaaCreative Work Centre complex, opened in 1998 as a rehabilitation centre for Aboriginal artists todevelop their skills and assist in rehabilitation of inmates.
2.2 Surrounding land uses
Land surrounding the complex includes Hector Park across the Mitchell Highway and to the north,which includes a tourist information centre and Indoor Sports Stadium. A low density residential areais located to the northeast, and across Browning Street. A large industrial area including a number ofbusinesses is located to the southeast. The land to the south across the Mid-Western Highwayconsists of areas of bushland and open paddocks, while to the west is the Bathurst Golf Club.
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3.0 Scope of workThis noise and vibration impact assessment has:
· Established the existing background noise levels in the vicinity of the Project;
· Established construction noise management levels and vibration limits which would apply to thedemolition and construction of the Project;
· Predicted construction noise and vibration levels at nearby residential and other sensitivereceivers due to the Project;
· Predicted noise impacts from additional off-site construction traffic generated by the Project;
· Recommended mitigation measures where necessary to reduce and manage noise and vibrationimpacts from the demolition and construction of the Project;
· Established appropriate environmental noise criteria based upon the Noise Policy for Industrial(NPfI), Environment Protection Authority (EPA), 2016, during the operation of the Project;
· Predicted the environmental noise levels at nearby residential receivers due to the operation ofthe Project;
· Assessed the predicted noise levels in relation to the environmental noise limits; and
· Recommended measures to reduce the noise levels to comply with the environmental noiselimits.
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Figure 1 Bathurst Correctional Centre and surrounding receivers
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3.1.1 Assessment receivers
The closest noise sensitive receivers are residential receivers located to the northeast acrossBrowning Street and further to the south across Stewart Street (Mid Western Highway). Industrialreceivers are located to the south of the existing centre on Stewart Street. Information regarding theassessment receivers displayed in Figure 1 is shown in Table 1. The assessment receiver addresses,along with the land use classification (as defined in the Bathurst Regional Local Environmental Plan2014) of each receiver are presented.Table 1 Assessment receiver locations
Receiver Address Land use classification
R1 269 Browning Street, Bathurst General Residential (R1)R2 265 Browning Street, Bathurst General Residential (R1)R3 263 Browning Street, Bathurst General Residential (R1)R4 261 Browning Street, Bathurst General Residential (R1)R5 259 Browning Street, Bathurst General Residential (R1)R6 257 Browning Street, Bathurst General Residential (R1)R7 255 Browning Street, Bathurst General Residential (R1)R8 253 Browning Street, Bathurst General Residential (R1)R9 249 Browning Street, Bathurst General Residential (R1)R10 247 Browning Street, Bathurst General Residential (R1)R11 245a Browning Street, Bathurst General Residential (R1)R12 34 Mitchell Highway, Bathurst Public Recreation (RE1)R13 369 Stewart Street, Bathurst General Industrial (IN1)R14 369a Stewart Street, Bathurst General Industrial (IN1)Compliance with the environmental noise criteria at the receivers show in Table 1 will likely result incompliance at all other receivers.
3.2 Relevant policies and guidelines
This Noise and Vibration Impact Assessment has been prepared to assess the environmental impactsassociated with the construction and operation of the Project under the provisions of Part 5 of theEnvironmental Planning and Assessment Act 1979 (EP&A Act).
The following policies and guidelines have been used to understand the existing noise environmentaround the Site and to complete noise and vibration assessments for the construction and operation ofthe Project:
· Interim Construction Noise Guideline (ICNG), Department of Environment and Climate Change(DECC), 2009;
· Assessing Vibration: A Technical Guideline (AVATG), Department of Environment andConservation (DEC), 2006;
· NSW Road Noise Policy (RNP), Department of Environment, Climate Change and Water(DECCW), 2011;
· Noise Policy for Industrial (NPfI), Environment Protection Authority (EPA), 2016;
· DIN Standard 4150: Part 3 1999 Structural Vibration in Buildings - Effects on Structures, 1999;
· British Standard BS 6472: Part 1 2008 Evaluation of Human Exposure to Vibration in Buildings,2008;
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· Australian Standard AS 2436-2010, Guide to noise and vibration control on construction,demolition and maintenance sites, 2010;
· Australian Standard AS 1055.1-1997 – Acoustics – Description and measurement ofenvironmental noise, Part 1: General procedures, 1997;
· UK Department for Environment, Food and Rural Affairs (DEFRA) Update of noise database forprediction of noise on construction and open sites, 2006;
· International Standards Organisation ISO 9613: Part 2 1996-2 Acoustics – Attenuation of soundduring propagation outdoors – Part 2 General method of calculation.
Definitions for acoustic terminology used within this report can be found in Appendix A.
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4.0 Existing acoustic environmentLong-term unattended measurements were undertaken to establish the existing ambient andbackground noise environment at potentially affected receivers in the vicinity of the Project Area. Theclosest noise sensitive receivers are residential receivers are located to the northeast across BrowningStreet and further to the south across Stewart Street (Mid-Western Highway). Industrial receivers arelocated to the south of the existing centre on Stewart Street.
4.1 Unattended noise monitoring
Long-term unattended noise monitoring was conducted between 27 April 2018 and 8 May 2018. Thenoise logger was placed within the front yard of 249 Browning Street, Bathurst. The noise logger wascalibrated prior to and after the monitoring period with a drift in calibration not exceeding ± 0.5 dB(A).
4.1.1 Instrumentation
All the acoustic instrumentation employed during the noise measurements comply with therequirements of AS IEC 61672.1-2004 Electroacoustics - Sound level meters - Specifications andwere within their current National Association of Testing Authorities, Australia (NATA) certified in-calibration period (i.e. calibration in the last two years).
In accordance with the EPA’s Noise Policy for Industry (NPfI), noise monitoring affected by adverseweather conditions or extraneous noise events was excluded from the monitoring data. The NPfIadvises that data may be affected where adverse weather occurs, such as wind speeds higher thanfive metres per second or rain. Weather data were acquired from the Bureau of Meteorology’sBathurst Airport weather station (station ID 063291).
4.1.2 Noise measurements
The logger measured noise levels over the sample period and then determined LA1, LA10, LA90, and LAeqlevels of the noise environment. The LA1, LA10 and LA90 noise levels are the levels exceeded for 1 percent, 10 per cent and 90 per cent of the measurement period respectively. The LA90 is taken as thebackground level. The LA1 is indicative of the maximum noise levels due to individual noise eventssuch as the pass-by of a heavy vehicle. The LAeq level is the equivalent continuous sound level andhas the same sound energy over the sample period as the actual noise environment with fluctuatingsound levels.
The LA90 noise levels were analysed to determine a single assessment background level (ABL) foreach day, evening and night period in accordance with the NPfI for each monitoring location. The ABLis established by determining the lowest ten-percentile level of the LA90 noise data acquired over eachperiod of interest. Table 2 present individual ABLs for each day’s assessment periods. Thebackground noise level or rating background level (RBL) representing the day, evening and night-timeassessment periods is based on the median of individual ABLs determined over the entire monitoringperiod.
Table 2 also present the existing LAeq ambient noise levels selected for each day, evening and night-time period, in accordance with the NPfI. An overall representative LAeq noise level is determined bylogarithmically averaging each assessment period for the entire monitoring period.
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Table 2 Unattended noise measurement results, dB(A)
Measurement date
Background noise levelsLA90 dB(A)
Ambient noise levelsLAeq dB(A)
Day1 Evening1 Night1 Day1 Evening1 Night1
Friday 27 April 2018 2 37 292
49 45
Saturday 28 April 2018 2 34 292
48 46
Sunday 29 April 2018 36 35 30 51 47 48
Monday 30 April 2018 40 35 30 54 50 48
Tuesday 1 May 2018 40 38 33 54 50 47
Wednesday 2 May 2018 41 38 33 62 50 48
Thursday 3 May 20182
38 2 249 2
Friday 4 May 20182 2 37
250 47
Saturday 5 May 20182
37 31 52 49 48
Sunday 6 May 2018 36 37 31 54 51 50
Monday 7 May 2018 41 38 32 54 51 50
Tuesday 8 May 2018 41 38 33 54 51 48
Log Average - - - 56 49 48
RBL 40 37 31 - - -
Notes:1. Day is defined as 7:00 am to 6:00 pm, Monday to Saturday and 8:00 am to 6:00 pm Sundays & Public Holidays. Evening is
defined as 6:00 pm to 10:00 pm, Monday to Sunday & Public Holidays. Night is defined as 10:00 pm to 7:00 am, Mondayto Saturday and 10:00 pm to 8:00 am Sundays & Public Holidays.
2. Indicates period was affected by adverse weather conditions
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5.0 Construction noise and vibration criteria
5.1 Construction activity noise criteria
5.1.1 Interim Construction Noise Guideline
The Interim Construction Noise Guideline (ICNG) is the principal guideline for the assessment andmanagement of construction noise in NSW. The ICNG recommends that a quantitative assessment iscarried out for all ‘major construction projects that are typically subject to the Environmental ImpactAssessment (EIA) processes’. Noise levels due to construction activities are predicted at nearbyreceivers using environmental noise modelling software and compared to the levels provided in theICNG.
Where an exceedance of the management levels is predicted, the ICNG advises that receivers can beconsidered ‘noise affected’ and the proponent should apply all feasible and reasonable work practicesto minimise the noise impact. The proponent should also inform all potentially impacted residents ofthe nature of the works to be carried out, the expected noise level and duration, as well as contactdetails.
Where construction noise levels reach 75 dB(A) residential receivers can be considered as ‘highlynoise affected’ and the proponent should, in consultation with the community, consider restrictinghours to provide respite periods.
The ICNG defines what is considered to be feasible and reasonable as follows:
· Feasible
A work practice or abatement measure is feasible if it is capable of being put into practice orof being engineered and is practical to build given project constraints such as safety andmaintenance requirements.
· Reasonable
Selecting reasonable measures from those that are feasible involves making a judgment todetermine whether the overall noise benefits outweigh the overall adverse social, economicand environmental effects, including the cost of the measure.
ICNG residential noise management levels are presented in Table 3. The construction noisemanagement levels (NML) for the residential and non-residential receivers are detailed in Table 4 andTable 5.Table 3 ICNG residential noise management levels
Time of dayNML,LAeq,15min,dB(A)1
How to apply
Recommendedstandard hours:Monday to Friday7 am to 6 pmSaturday 8 am to1 pmNo work on Sundaysorpublic holidays
Noise affectedRBL + 10 dB
The noise affected level represents the point above whichthere may be some community reaction to noise.· where the predicted or measured LAeq (15 min) is greater
than the noise affected level, the proponent should applyall feasible and reasonable work practices to meet thenoise affected level
· the proponent should also inform all potentially impactedresidents of the nature of works to be carried out, theexpected noise levels and duration, as well as contactdetails.
Highly noiseaffected75 dB(A)
The highly noise affected level represents the point abovewhich there may be strong community reaction to noise.· where noise is above this level, the relevant authority
(consent, determining or regulatory) may require respiteperiods by restricting the hours that the very noisy
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Time of dayNML,LAeq,15min,dB(A)1
How to apply
activities can occur, taking into account:- times identified by the community when they are
less sensitive to noise (such as before and afterschool for works near schools, or mid-morning ormid-afternoon for works near residences
- if the community is prepared to accept a longerperiod of construction in exchange for restrictionson construction times.
Outsiderecommendedstandard hours
Noise affectedRBL + 5 dB
· a strong justification would typically be required for worksoutside the recommended standard hours
· the proponent should apply all feasible and reasonablework practices to meet the noise affected level
· where all feasible and reasonable practices have beenapplied and noise is more than 5 dB(A) above the noiseaffected level, the proponent should negotiate with thecommunity
· for guidance on negotiating agreements see Section7.2.2 of the ICNG.
Notes:1. Noise levels apply at the property boundary that is most exposed to construction noise, and at a height of 1.5 m above
ground level. If the property boundary is more than 30 m from the residence, the location for measuring or predicting noiselevels is at the most noise-affected point within 30 m of the residence. Noise levels may be higher at upper floors of thenoise affected residence.
It is understood that it is desirable for Saturday construction hours to be extended until 4 pm for thisproject to minimise the overall construction period due to a current bed shortage in the justice system.This will have the benefit of reducing the overall impact on the local community.
A review of the noise monitoring results show clearly that ambient noise levels in the vicinity of thedevelopment start to rise steadily from 6:00 am on Saturday mornings and do not begin to decreaseuntil around 6:00pm. Therefore it is recommended that the extended construction hours are approvedto reduce the overall impact on the local community.
Table 4 presents the NMLs applicable to residential receivers nearby to the Project.Table 4 Construction noise management levels – Residential receivers
PeriodRBL,LA90 dB(A)
Standard hours noisemanagement levels, LAeq,15min,dB(A)
Out-of-hours noise managementlevels, LAeq,15min, dB(A)
Day 40 50 45Evening 37 - 42Night 31 - 36
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Table 5 presents the noise management levels applicable to other noise sensitive receivers, such aseducational facilities and places of worship and commercial receivers as recommended by the ICNG.Hotels have been considered as a residential land use rather than a commercial land use. Thisprovides a conservative assumption as the residential NML is more stringent than that which would beapplied to a commercial receiver.Table 5 Construction noise management levels – Other receivers
Land Use
Noise Management Levels, LAeq,15min
(applies when properties are being used)
External noise level Internal noise level
Commercial premises(including offices, retail outlets) 70 dB(A) 60 dB(A)
Industrial premises 75 dB(A) 65 dB(A)
Medical 55 dB(A) 45 dB(A)
Classrooms at schools andother educational institutions 55 dB(A) 45 dB(A)
5.1.2 Sleep disturbance criteria
The ICNG requires a sleep disturbance analysis to be completed where construction works areplanned to extend over more than two consecutive nights. On the basis of the ambient noiseenvironment during the night-time period, the predicted LA1 noise levels and number of expected LA1noise events should be predicted in order to determine the likelihood of potential sleep disturbance.The ICNG makes reference to the NSW Environment Criteria for Road Traffic Noise (ECRTN), nowsuperseded by the Road Noise Policy (RNP), for guidance in assessing the potential for sleepdisturbance.
The guidance provided in the RNP for assessing the potential for sleep disturbance recommends thatto minimise the risk of sleep disturbance during the night-time period (10.00 pm to 7.00 am), theLA1(1 min), noise level outside a bedroom window should not exceed the LA90 (15 minute) background noiselevel by more than 15 dB. The EPA considers it appropriate to use this metric as a screening criterionto assess the likelihood of sleep disturbance. If this screening criterion is exceeded, a more detailedanalysis must be undertaken and include the extent that the maximum noise level exceeds thebackground noise level and the number of times this is likely to happen during the night-time period.
The RNP contains a review of research into sleep disturbance which represents NSW EPA advice onthe subject of sleep disturbance due to noise events. It concludes that having considered the resultsof research to date that, ‘Maximum internal noise levels below 50 to 55 dB(A) are unlikely to causeawakening reactions’. Therefore, given that an open window provides around 10 dB in noiseattenuation from outside to inside, external noise levels of 60 to 65 dB(A) are unlikely to result inawakening reactions.
Based on the measured background noise levels during the night, the sleep disturbance criteria for thenearest noise sensitive residential receivers are presented in Table 6.Table 6 Sleep disturbance criteria
LocationBackground noiselevel (LA90), dB(A)
Sleep disturbancescreening level LA1(1
minute), dB(A)
Awakening reactionLA1(1 minute), dB(A)
Browning Streetresidential receivers 31 46 65
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5.2 Construction traffic noise criteria
Noise from construction traffic on public roads is not covered by the ICNG. However the ICNG doesrefer to the ECRTN, now superseded by the RNP, for the assessment of noise arising fromconstruction traffic on public roads.
To assess noise impacts from construction traffic, an initial screening test should be undertaken byevaluating whether existing road traffic noise levels would increase by more than 2 dB(A). Where thepredicted noise increase is 2 dB(A) or less, then no further assessment is required. However, wherethe predicted noise level increase is equal to or greater than 2 dB(A), and the predicted road trafficnoise level exceeds the road category specific criterion then noise mitigation should be considered forthose receivers affected. The RNP does not require assessment of noise impact to commercial orindustrial receivers.
5.3 Construction vibration criteria
The relevant standards and guidelines for the assessment of construction vibration are summarised inTable 7.Table 7 Standards/guidelines used for assessing construction vibration
Item Standard/guideline
Structural damage German Standard DIN 4150 – Part 3 – StructuralVibration in Buildings – Effects on Structures (DIN4150)
Human comfort (tactile vibration) Assessing Vibration: A Technical Guideline (AVATG)1
Notes:
1. This document is based upon the guidelines contained in British Standard 6472:1992, “Evaluation of human exposure tovibration in buildings (1-80 Hz)”. This British Standard was superseded in 2008 with BS 6472-1:2008 “Guide to evaluationof human exposure to vibration in buildings – Part 1: Vibration sources other than blasting” and the 1992 version of theStandard was withdrawn. However the NSW Environment Protection Authority still requires vibration to be assessed inaccordance with the 1992 version of the Standard at this point in time.
Vibration, at levels high enough, has the potential to cause damage to structures and disrupt humancomfort. Vibration and its associated effects are usually classified as continuous, impulsive orintermittent as follows:
· Continuous vibration continues uninterrupted for a defined period and includes sources such asmachinery and continuous construction activities
· Impulsive vibration is a rapid build up to a peak followed by a damped decay. It may consist ofseveral cycles at around the same amplitude, with durations of typically less than two secondsand no more than three occurrences in an assessment period. This may include occasionaldropping of heavy equipment or loading activities
· Intermittent vibration occurs where there are interrupted periods of continuous vibration, repeatedperiods of impulsive vibration or continuous vibration that varies significantly in magnitude. Thismay include intermittent construction activity, impact pile driving, jack hammers.
5.3.1 Structural damage
At present, no Australian Standards exist for the assessment of building damage caused by vibration.The German Standard (DIN 4150) provides recommended maximum levels of vibration that reducethe likelihood of building damage caused by vibration and are presented in Table 8. DIN 4150 statesthat buildings exposed to higher levels of vibration than recommended limits would not necessarilyresult in damage. In this assessment DIN 4150 structural damage safe limits have been adopted forresidential, non-residential and heritage structures.
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Table 8 Structural damage safe limits (DIN 4150) for building vibration (Vibration peak particle velocity)
Group Type of structureAt foundation– Less than10 Hz
At foundation- 10 Hz to50 Hz
At foundation- 50 Hz to100 Hz1
Vibration atthe horizontalplane of thehighest floorfor allfrequencies
1 Buildings used forcommercial purposes,industrial buildings andbuildings of similardesign
20 mm/s 20 to 40 mm/s 40 to 50 mm/s 40 mm/s
2 Dwellings andbuildings of similardesign and/or use
5 mm/s 5 to 15 mm/s 15 to 20 mm/s 15 mm/s
3 Structures thatbecause of theirparticular sensitivity tovibration, do notcorrespond to thoselisted in Group 1 or 2and have intrinsicvalue (e.g. buildingsthat are under apreservationorder/heritage listed)
3 mm/s 3 to 8 mm/s 8 to 10 mm/s 8 mm/s
Notes:
1. At frequencies above 100 Hz, the values given in this column may be used as minimum values
5.3.2 Human comfort
The assessment of intermittent vibration outlined in the NSW EPA guideline Assessing Vibration: ATechnical Guideline (AVTG) is based on Vibration Dose Values (VDVs). The VDV accumulates thevibration energy received over the daytime and night-time periods.
Maximum and preferred VDVs for intermittent vibration arising from construction activities are listed inTable 9. The VDV criteria are based on the likelihood that a person would comment adversely on thelevel of vibration over the entire assessment period.
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Table 9 Preferred and maximum vibration dose values for intermittent vibration, m/s1.75
LocationDaytime - 7am – 10pm Night-time 10pm – 7 am
Preferred Maximum Preferred Maximum
Critical areas1 0.1 0.2 0.1 0.2Residences 0.2 0.4 0.13 0.26Offices, schools, educationalinstitutions and places of worship 0.4 0.8 0.4 0.8
Workshops2 0.8 1.6 0.8 1.6Notes:
1. Examples include hospital operating theatres and precision laboratories where sensitive operations are occurring. Placeswhere sensitive equipment is stored or delicate tasks are undertaken require more stringent criteria than the residentialcriteria specified above
2. Examples include automotive repair shops, manufacturing or recycling facilities. This includes places wheremanufacturing, recycling or repair activities are undertaken but do not require sensitive or delicate tasks.
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6.0 Operational Noise Criteria
6.1 Protection of the Environment Operations Act 1997
The main acoustic requirement of the Protection of the Environment Operations Act 1997 (PoEO Act)is to ensure that “noise is not offensive”. The definition for offensive noise is provided in the Dictionaryin the PoEO Act and states:
offensive noise is:
(a) that, by reason of its level, nature, character or quality, or the time at which it is made, or anyother circumstances:
(i) is harmful to (or is likely to be harmful to) a person who is outside the premises fromwhich it is emitted, or
(ii) interferes unreasonably with (or is likely to interfere unreasonably with) the comfort orrepose of a person who is outside the premises from which it is emitted, or
(b) that is of a level, nature, character or quality prescribed by the regulations or that is made at atime, or in other circumstances, prescribed by the regulations.
To determine if a noise source is offensive, a primary consideration is to determine whether the noisesource is intrusive. The EPA provides guidelines for external noise emissions from developments inthe NPfI. The NPfI recommends a method which can be used to ascertain the intrusiveness of noiseemissions.
6.2 Noise Policy for Industry
The Noise Policy for Industry (NPfI) sets out the procedure to determine project noise trigger levels fora development. It provides noise levels for assessing the potential impact of noise from industry andincludes a framework for considering feasible and reasonable noise mitigation measures. Theassessment procedure for industrial noise sources has two components that must be considered:
· Controlling intrusive noise impacts in the short term for residences
· Maintaining noise level amenity for residences and other land uses.
6.2.1 Intrusive noise impacts
The NPfI states that the intrusiveness of an industrial noise source may generally be consideredacceptable if the level of noise from the source (LAeq level), measured over a 15 minute period, doesnot exceed the background noise level measured by more than 5 dB. The rating background level(RBL) is the background noise level to be used for assessment purposes and is determined by themethods given in the NPfI. Adjustments are to be applied to the level of noise produced if the noise atthe receiver contains annoying characteristics such as tonality or impulsiveness. The RBL andIntrusive Criterion at the nearly receiver area is provided in Table 10.Table 10 Recommended LAeq, 15 minute intrusive noise criteria levels from industrial noise sources
Receiver area Time of dayMeasured RBL(LA90, 15 minute),
dB(A)
Intrusive criterionRBL + 5, dB(A)
249 Browning Street, Bathurst Day 40 45
Evening 37 42
Night 31 36
6.2.2 Protecting noise amenity
To limit continuing increases in noise levels, the maximum ambient noise level resulting from allindustrial noise sources in an area should not normally exceed the acceptable noise levels specified inTable 2.2 of the NPfI. As per the definitions of receiver types within the NPfI, residential propertieswithin this area are classified as being in a suburban area. For residential receivers, the cumulative
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amenity criteria are shown in Table 11. Amenity noise level for other nearby receiver types are alsopresented in Table 11.Table 11 Recommended LAeq, period amenity noise criteria levels from industrial noise sources
Type of receiverIndicative noiseamenity area
Time of dayRecommended amenity
LAeq(period) noise level, dB(A)Acceptable
Residence Suburban
Day 55
Evening 45
Night 40Place of worship - internal All When in use 40
School classroom - internal All When in use 35
Active recreation area All When in use 55
Commercial premises All When in use 65
Industrial premises All When in use 70
The level of transport noise, road traffic noise in particular, may be high enough to make noise from anindustrial source effectively inaudible, even though the LAeq noise level from that industrial noisesource may exceed the project amenity noise level. However the nearest potentially affectedresidential properties are set back from the Mitchell Highway and are not subject to high levels of roadtraffic noise. Therefore no correction is needed.
The recommended amenity noise levels represent the objective for total industrial noise at a receiverlocation, whereas the project amenity noise level presents the objective for noise from a singleindustrial development at a receiver location.
To ensure that industrial noise level (existing plus new) remain within the recommended amenity noiselevels for an area, a project amenity noise level applies for each new source of industrial noise asfollows:
· Recommended amenity noise level (NPfI Table 2.2) minus 5 dB(A)
The LAeq(period) amenity levels are converted to LAeq(15 min) amenity levels by adding 3 dB(A).
The Project noise trigger levels are the lower of the intrusive and amenity criteria and are presented inTable 12.Table 12 Operational noise criteria – residential receivers
Assessmentperiod
MeasuredLAeq noiselevel, dB(A)
MeasuredRBL (LA90),dB(A)
Intrusivecriteria
(LAeq,15min),dB(A)
Amenitycriteria
(LAeq,15 min),dB(A)
Projectnoise
triggerlevels,dB(A)
Day 56 40 45 53 (55-5+3) 45
Evening 49 37 42 43 (45-5+3) 42
Night 48 31 36 38 (40-5+3) 36
The above noise trigger levels apply to environmental noise emissions from mechanical plant installedas part of the Project, people outdoors and onsite car movements.
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In accordance with the NPfI, noise emissions from the Project are assessed at the most affected pointon or within the residential boundary.
6.2.3 Sleep disturbance criteria
The NPfI requires the potential for sleep disturbance to be assessed. Sleep disturbance is consideredto be both awakenings and disturbance to sleep stages. The NPfI states that where industrial night-time noise levels at a residential location exceed the following screening levels a detailed maximumnoise level event assessment should be undertaken:
· LAeq,15min 40 dB(A) or the prevailing RBL plus 5 dB, whichever is the greater, and/or
· LAFmax 52 dB(A) or the prevailing RBL plus 15 dB, whichever is the greater.
The detailed assessment should cover the maximum noise level, the extent to which the maximumnoise level exceeds the rating background noise level, and the number of times this happens duringthe night-time period.
Based on the measured background noise levels during the night, the sleep disturbance criteria for thenearest noise sensitive residential receivers are presented in Table 13.Table 13 Night-time sleep disturbance screening levels
LocationNight-time RBL,LA90, 15 mins dB(A)
Sleep disturbance screening levels
LAeq(15 min) LAmax
Browning Street residentialreceivers 31 40 52
6.3 Road Noise Policy
The Road Noise Policy (RNP), published by the EPA in 2011, has been used to assess the noisearising from traffic generated by the Project. The RNP guidelines are applicable for traffic movementson public roads which would be generated as a result of the Project.
Table 14 presents the road traffic noise criteria from the RNP for land use developments with apotential to create additional traffic on existing local roads. The external noise criteria are applied 1 mfrom the external facade of the affected residential buildings. Browning Street and Brooke MooreAvenue are considered local roads.Table 14 Road traffic noise assessment criteria for residential land use
Road category Type of project/land use
Assessment criteria, dB(A)
Day(7:00 am –10:00 pm).
Night(10:00 pm –
7:00 am).
Local roads Existing residences affected byadditional traffic on existing local roadsgenerated by land use developments
LAeq, (1 hour) 55(external)
LAeq, (1 hour) 50(external)
To assess noise impacts from traffic generated by the Project, an initial screening test should beundertaken by evaluating whether existing road traffic noise levels will increase by more than 2 dB(A).Where the predicted noise increase is 2 dB(A) or less, then no further assessment is required.However, where the predicted noise level increase is greater than 2 dB(A), and the predicted roadtraffic noise level exceeds the road category specific criterion then noise mitigation should beconsidered for those receivers affected. The RNP does not require assessment of noise impact tocommercial or industrial receivers.
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7.0 Construction noise assessment
7.1 Construction stages and scheduling
The key construction steps for the project include:
· Establishment of roadways
· Construction and relocation of existing kitchen, industries and maintenance buildings
· Demolition of K block
· Earthworks
· Construction of new maximum security buildings.
The above works have been grouped into three scenarios:
· Establishment of roadways and construction of kitchen, industries and maintenance buildings
· Demolition of K Block and earthworks
· Construction of new maximum security buildings.
These scenarios have been established to demonstrate the worst case noise predicted from theconstruction of the project. These activities would be confirmed by the construction contractor prior toconstruction commencing and further assessment would be undertaken if required.
It is assumed that works would be conducted during the standard construction hours of 7 am to 6 pmMonday to Friday and slightly extended construction hours of 8 am to 4 pm on Saturdays.
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7.2 Construction noise sources
Construction noise sources and their respective LAeq sound power levels for each scenario are shownin Table 15. These sound power levels are typical values taken from data provided in AustralianStandard AS2436-2010, Guide to noise and vibration control on construction, demolition andmaintenance sites and the UK Department for Environment, Food and Rural Affairs (DEFRA) Updateof noise database for prediction of noise on construction and open sites noise database, 2006, and itis assumed equipment is modern and in good working order.Table 15 Equipment sound power levels per construction scenario, dB(A)
Scenario Equipment SPLTotalSPL
Establishment of roadways andconstruction of kitchen, industries andmaintenance buildings
Excavator 98 114
Tipper truck 105Grader 108Roller 105Diesel generator 94Hand tools 94Hammer drill 107
Electric formwork hoist 82Electric concrete placingboom 103
Concrete mixer truck 89Concrete vibrator poker 97Diesel mobile crane atground 104
Elevated work platform andboom lift 85Forklift 101Rubbish removal truck atground 98
Demolition of K Block and earthworks Tipper truck 105 117
Concrete saw 115Excavator 98Forklift 101Backhoe 97Diesel mobile cranes atground 104
Bobcat 104Rubbish removal trucks atground 98
Grader 108Roller 105Diesel generator 94Hand tools 94
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Scenario Equipment SPLTotalSPL
Construction of new maximum securitybuildings
Excavator 98 112
Tipper truck 105Diesel generator 94Hand tools 94Hammer drill 107
Electric formwork hoist 82Electric concrete placingboom 103
Concrete mixer truck 89Concrete vibrator poker 97Diesel mobile cranes atground 104
EWP and boom lifts 85Forklift 101Rubbish removal trucks atground 98
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7.3 Modelling and conditions
In order to assess noise impacts during construction, a noise model was created to represent‘reasonable’ worst periods of works. The construction of the Project has been modelled inSoundPLAN Version 7.3 with the following features included in the noise model:
· Ground topography (the level and shape of the surrounding land)
· Ground absorption and reflection
· Buildings (including shielding of noise)
· Residential and non-residential receivers (as shown in Figure 1)
· Construction noise sources for the Project (as listed in Table 15).
Noise emissions from the Project Area have been modelled using an implementation of the ISO 9613propagation algorithm.
Given the close proximity to the nearest receivers, adverse weather conditions are unlikely to have aneffect on the assessment and have therefore not been included in the assessment.
7.4 Construction airborne noise assessment
The predicted impact from the assumed ‘reasonable’ worst case 15 minute period of each phase ofconstruction works was assessed. Predicted construction noise impacts during the proposedconstruction hours are shown in Table 16.
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Table 16: Predicted daytime construction noise impacts, dB(A) LAeq, 15 minute
Address
No
ise
Man
agem
ent
Lev
el (
NM
L)
Hig
hly
no
ise
affe
cted
Construction phase
Establishment ofroadways andconstruction ofkitchen, industriesand maintenancebuildings
Demolition ofbuilding K andearthworks
Construction ofnew maximumsecurity buildings
SP
L a
t re
ceiv
er
Exc
eed
ance
of
NM
L
SP
L a
t re
ceiv
er
Exc
eed
ance
of
NM
L
SP
L a
t re
ceiv
er
Exc
eed
ance
of
NM
L
R1 - 269 BrowningStreet, Bathurst 50 75 67 17 71 21 70 20
R2 - 265 BrowningStreet, Bathurst 50 75 62 12 75 25 74 24
R3 - 263 BrowningStreet, Bathurst 50 75 61 11 77 27 76 26
R4 - 261 BrowningStreet, Bathurst 50 75 57 7 76 26 75 25
R5 - 259 BrowningStreet, Bathurst 50 75 56 6 76 26 75 25
R6 - 257 BrowningStreet, Bathurst 50 75 55 5 76 26 75 25
R7 - 255 BrowningStreet, Bathurst 50 75 56 6 75 25 74 24
R8 - 253 BrowningStreet, Bathurst 50 75 53 3 76 26 75 25
R9 - 249 BrowningStreet, Bathurst 50 75 51 1 77 27 76 26
R10 - 247Browning Street,Bathurst
50 75 52 2 77 27 76 26
R11 - 245aBrowning Street,Bathurst
50 75 50 - 73 23 72 22
R12 - 34 MitchellHighway, Bathurst 75 - 58 - 56 - 55 -
R13 - 369 StewartStreet, Bathurst 75 - 47 - 79 4 78 3
R14 - 369a StewartStreet, Bathurst 75 - 43 - 86 11 85 10
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The assumption that all equipment would be running at the same time means that the predicted levelsare worst case and are unlikely to occur for significant periods of time. Also, the constructionscenarios modelled are indicative only and the impacts of construction noise should be furtherreviewed when the selection of a contractor is finalised and the construction program and associatedequipment has been identified in order to check consistency with the assumptions in this assessment.
Significant variation in the assumptions from this assessment may require a review of potential noiseimpacts against the noise criteria presented in Section 5. It can be expected that there may bedifferences between predicted and measured noise levels due to variations in instantaneous operatingconditions, plant in operation during the measurement and also the location of the plant equipment.The acoustic shielding calculated in the model due to fixed building structures would also vary as theconstruction equipment moves around the Project Area.
Construction noise levels at the identified residential receivers have been assessed against the NMLsfor standard hours (as shown in Section 5). However, as noted the level of impact may changedepending on the final construction methodology which would be developed by the contractor, andfurther assessment would be undertaken if required.
During each construction stage not all equipment would be operating simultaneously at all times or atone location (as assumed in the modelling to account for a worst case scenario), which would result ina reduction in predicted noise levels.
Given that construction is likely to occur within daytime hours only, a sleep disturbance assessmenthas not been completed. Construction noise levels at the identified residential and non-residentialreceivers have been assessed against the standard hours NMLs (as shown in Table 16).
During construction and demolition activities within the Project Area, exceedances of up to 27 dB(A)are predicted at the closest residential, commercial and industrial receivers. No exceedances arepredicted at residential, commercial and industrial receivers during construction of the new buildings tothe north west of the existing facility.
Mitigation measures for receivers have been specified in Section 8.0. These measures areconsidered to be feasible and reasonable and would reduce the impact of these exceedances.
Several residential receivers are predicted to be ‘highly affected’ during the construction of theproposed expansion. While there are exceedances of the highly affected noise criteria, the impact ofthese can be reduced with the implementation of the mitigation measures as discussed in Section 8.0.
7.5 Construction traffic assessment
It is understood that Browning Street is a bus route, so heavy vehicles are able to access the Siteunder existing conditions. Construction traffic volumes are anticipated to be 5 to 10 heavy vehicledeliveries per day supplying plant and equipment, which equates to one heavy vehicle in any 15minute period.
Considering Browning Street currently has bus movements, the addition of one heavy vehicle in any15 minute period is considered to be insignificant from a noise impact perspective.
It has been estimated by DoJ that up to 150 people may be onsite during the peak construction phase.Although it is unlikely that all of these people would arrive / leave the Project Area in separatevehicles, The worst case road traffic noise impact from 150 light vehicles and one heavy vehiclearriving at the Site during peak hour has been assessed.
The predicted level of noise to the existing residences affected by additional traffic on existing localroads from construction traffic is 55 dBA. This level of noise is within the Road Noise Policy criteria inSection 6.3 and is therefore considered acceptable. It should be noted that this criteria is for theassessment of operational traffic noise and therefore the impact of road traffic from constructionactivities would be lower due to the length of construction activity.
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7.6 Construction vibration assessment
7.6.1 Predicted vibration – cosmetic damage
Vibration-intensive works may include the use of the following items of equipment:
· Jack hammers
· Rock breakers
The safe working distances of these items of equipment are shown in Table 17 which is based onAECOM’s previous project experience and recommendations of the TfNSW Construction NoiseStrategy (CNS) which are designed to comply with the appropriate vibration criteria for structuraldamage. If these safe working distances are complied with no adverse impacts from vibrationintensive works are likely in terms of human response or cosmetic damage.
Based on the indicative construction activities assessed for the Project, some works may occur withinthe safe working distances for heritage features. If vibration-intensive works are required within thesesafe working distances, mitigation measures to control excessive vibration would be implemented asoutlined in Section 8.0.
The heritage features should be demarcated as constraint areas, as far as is practical, duringconstruction to avoid potential impacts from vibration. For vibration-generating activities within thesafe working distances, it is recommended that attended measurements are undertaken when workcommences, to determine site specific safe working distances.Table 17 Safe working distances of vibration intensive equipment to be used during the Project
Plant Rating/DescriptionCosmetic damage –residential/commercial
Cosmetic damage -heritage
Jack hammer Hand-held 1 m (nominal) 1 m (nominal)Hydraulichammer
300 kg - 5 to 12texcavator
2 4
900 kg – 12 to 18texcavator
7 12
1600 kg – 18 to 34texcavator
22 34
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8.0 Mitigation measuresIt has been identified that potential construction noise impacts at residential properties within thevicinity of the Project may be high, in some cases exceeding the noise management levels by 20 dB ormore. It is therefore critical to the success of this Project that a Construction Noise and VibrationManagement Plan (CNVMP) should be developed and implemented prior to commencement ofconstruction activities. The CNVMP should include all reasonable and feasible safeguards to managethe noise emissions from the Project Area and manage any complaints which may occur due toconstruction noise. The CNVMP should include, as a minimum, the following:
· Identification of nearby residential properties and other sensitive land uses
· Description of approved hours of work
· Description and identification of all construction activities, including work areas, equipment andduration
· Description of work practices (generic and specific) which would be applied to minimise noise andvibration
· A complaints handling process
· Noise and vibration monitoring procedures
· Overview of community consultation required for identified high impact works.
Construction works should be planned and carried out during standard construction hours whereverpossible.
8.1 Recommended mitigation measures
Table 18 presents the standard mitigation measures which should be considered as mitigationmeasures as part of the CNVMP.
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Table 18 Recommended noise and vibration mitigation measures
Action required Safeguard details
Management measures
Implement communityconsultation measures
Periodic notification (monthly letterbox drop or equivalent), website,Project Infoline, Construction Response Line, email distribution list.
Site inductions All employees, contractors and subcontractors are to receive anenvironmental induction, including information on noisemanagement.
Behavioural practices No swearing or unnecessary shouting or loud stereos/radios onsite.
No dropping of materials from height, throwing of metal items andslamming of doors.
Source controls
Construction hours andscheduling
Where feasible and reasonable, construction should be carried outduring the standard daytime working hours. Work generating highnoise and/or vibration levels should be scheduled during lesssensitive time periods.
Construction respite period High noise and vibration generating activities (e.g. rock breaking)may only be carried out in continuous blocks, not exceeding threehours each, with a minimum respite period of one hour betweeneach block.
Equipment selection andmaintenance
Use quieter and less vibration emitting construction methods wherefeasible and reasonable. Equipment would be regularly inspectedand maintained to ensure it is in good working order.
Maximum noise levels The noise levels of plant and equipment must have operating soundpower or sound pressure levels that would meet the predicted noiselevels.
Rental plant and equipment Noise emissions should be considered as part of the selectionprocess.
Use and siting of plant Avoid simultaneous operation of noisy plant within discernible rangeof a sensitive receiver.
The offset distance between noisy plant and adjacent sensitivereceivers is to be maximised.
Plant used intermittently to be throttled down or shut down.
Plant and vehicles to be turned off when not in use.
Noise-emitting plant to be directed away from sensitive receivers.
Plan works site andactivities to minimise noiseand vibration
Plan traffic flow, parking and loading/unloading areas to minimisereversing movements within the site.
Non-tonal reversing alarms Non-tonal reversing beepers (or an equivalent mechanism) must befitted and used on all construction vehicles and mobile plantregularly used on site and for any out of hours work.
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Action required Safeguard details
Minimise disturbancearising from delivery ofgoods to construction sites
Loading and unloading of materials/deliveries is to occur as far aspossible from sensitive receivers.
Select site access points and roads as far as possible away fromsensitive receivers.
Dedicated loading/unloading areas to be shielded if close tosensitive receivers.
Delivery vehicles to be fitted with straps rather than chains forunloading, wherever possible.
Construction related traffic Schedule and route vehicle movements away from sensitivereceivers and during less sensitive times.
Limit the speed of vehicles and avoid the use of enginecompression brakes.
Maximise on-site storage capacity to reduce the need for truckmovements during sensitive times.
Silencers on mobile plant Where possible reduce noise from mobile plant through additionalfittings including:
· Residential grade mufflers· Damped hammers such as “City” Model Rammer Hammers· Air parking brake engagement is silenced
Alternative methods The use of less vibration-intensive methods of construction orequipment is preferred where practical to reduce the potential forcosmetic damage. All equipment should be maintained andoperated in an efficient manner, in accordance with manufacturer’sspecifications, to reduce the potential for adverse vibration impacts
Site specific safe workingdistances
Attended vibration measurements are undertaken when workcommences, to determine site-specific safe working distances.Vibration intensive work should not proceed within the safe workingdistances unless a permanent vibration monitoring system isinstalled around one metre from the building footprint, to warnoperators (e.g. via flashing light, audible alarm, SMS) whenvibration levels are approaching the peak particle velocity objective.
Path controls
Shield stationary noisesources such as pumps,compressors, fans etc.
Stationary noise sources should be enclosed or shielded whilstensuring that the occupational health and safety of workers ismaintained.
Shield sensitive receiversfrom noisy activities
Use structures to shield residential receivers from noise such assite shed placement, earth bunds, fencing, erection of operationalstage noise barriers (where practicable) and consideration of sitetopography when situating plant.
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8.2 Community consultation and complaints handling
All residents receivers impacted by noise and vibration from the proposed works which are expectedto exceed the NML should be informed about the Project prior to the commencement of the particularactivity, with the highest consideration given to those that are predicted to be most affected as a resultof the works.
The information provided to the residents / building occupants should include:
· Programmed times and locations of construction work
· The hours of proposed works
· Construction noise and vibration impact predictions
· Construction noise and vibration mitigation measures being implemented on-site.
.
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9.0 Operational noise assessment and recommendationsThe assessment of noise emission from operational activities at the proposed expansion to theBathurst Correctional Facility is detailed in this section of the report with regard to the establishedcriteria as detailed in Section 6.0.
The proposed expansion to the existing centre would consist of the following buildings:
· Gate house
· Visits building
· Clinic / reception
· Industry
· Education
· Segregation unit.
The proposed relocation of the buildings from the oval to the west of the Project would consist of thefollowing:
· Kitchen/Laundry
· Bulk store
· Vehicle shed.
9.1 Modelling methodology
All modelling has been conducted in SoundPLAN v7.3 (industry standard) noise modelling software.The propagation algorithm chosen is the General Prediction Method which is suitable for the situationgiven the close proximity of nearby residents. Included in the model are the following:
· Natural ground terrain
· Ground absorption
· Air absorption
· All buildings at appropriate heights.
This assessment assumes that when events are taking place the facility will be operating at maximumcapacity unless otherwise stated. In the case that noise sources are less than the assumed soundpower levels or operated for less time or less capacity than assumed then the noise impacts will beless than those presented.
Given the close proximity to the nearest receivers, adverse weather conditions are unlikely to have aneffect on the assessment and have therefore not been included in the assessment.
The acoustic modelling was based on architectural drawings shown in Appendix B.
9.1.1 Building services noise emission (plant and equipment)
Building services noise emissions include all mechanical equipment servicing the building.Mechanical equipment selection would take place during the detailed design stage of the Project. It isassumed that all mechanical plant, including refrigeration compressors, condenser units and othermechanical plant items would be located within the designated plantrooms for each of the proposednew buildings. The Project design may consider some of the smaller mechanical equipment outsidethe building envelope i.e. cool/freezer room condensers and some small A/C splits, however, theassumptions noted above for the assessment are considered to represent a worst case scenario.
It is also assumed that ventilation and exhaust fans would discharge at roof level and via façadelouvers of the building.
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The associated sound power levels of plant assumed to be serving the proposed new buildings aredetailed in Table 19.
Table 19 Noise levels associated with mechanical services plant
Source
Sound power level, Leq, dB Totalsoundpowerlevel,dB(A)
Octave band centre frequency, Hz
63 125 250 500 1000 2000 4000 8000
Air conditioner outdoorcondenser unit (50 kW)
85 83 82 78 76 72 65 62 81
Refrigerator outdoorcondenser unit (4.5 kW)
40 46 48 59 68 64 60 51 70
Ventilation fan 77 79 85 84 83 81 76 68 88
In order to model the noise level from the plantrooms, it has been assumed that the typical plantroomswould contain three air conditioning units. It has been assumed that the Kitchen/Laundry buildingwould contain four refrigeration condensers.
Following selection of plant and equipment at the detailed design stage, it is recommended that areview be completed of the sound power levels to assess consistency with those presented in Table19.
Ventilation fans have been assumed to have half a metre of lined duct and a lined bend on theexternal side of the fan.
The noise levels from the mechanical equipment may need to be controlled by standard engineeringtreatments, which may include:
1. Enclosing the plant spaces
2. Acoustics louvres
3. Local mitigation measures on plant items (i.e. attenuators on individual fans)
4. Strategic location of openings.
It has been assumed that all mechanical plant assumed above would be operating 24 hours per day.
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9.1.2 Project traffic generation
Overview
The Project would include a 47 space car park for staff and a 75 space car park for visitors on thenorth east boundary fronting Browning Street.
Traffic volume counts were undertaken from the 4 April to the 10 April 2018 (refer to Section 7.6 of themain REF). The counts were taken at two locations; along Browning Street and Brook Moore Avenue.The tube locations and directions are illustrated in Figure 2.Figure 2 Traffic count locations and directions
The weekend trip generation was identified as the highest trip rate for the peak periods assessed.
In order to assess the impacts from the operation Project, a trip generation rate per bed wascalculated based on the existing traffic generation from the Site. As such, a trip rate of 0.16 trips perprison bed was adopted to represent a ‘worst case scenario’.
Carparking
Based on the adopted peak trip rate of 0.16 trips per prison bed, the proposed increase of 220 bedswould likely result in the generation of 35 trips during the weekend peak period. This equates to ninevehicles in a 15 minute period based on the weekend peak hour generation. The sound power level ofnormal car park activities based on AECOM’s noise survey data are detailed in Table 20.
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Table 20 Noise levels associated with car park activities
Source Total sound power level, dB(A)
Car ignition, accelerate and drive away, Leq, 15 minute76
Based on existing staff shift patterns, nine arrivals are expected in the hours between 10.30 pm and6.00 am. It has therefore been assumed that one vehicle may use the new carpark in a 15 minuteperiod at night.
On road traffic
The traffic assessment in Section 7.6 of the REF showed that the existing trip distribution during theweekend peak is evenly split with about 50% of vehicles arriving / departing via Brooke Moore Avenueand 50% of vehicles arriving via Browning Street. The traffic assessment also stated 103 vehicleswere counted in existing trips during the weekend peak. The additional 35 weekend peak hour tripsdue to the proposed expansion would result in a total of 138 weekend peak hour trips.
The increase in traffic on Browning Street and Brooke Moore Avenue due to the proposed expansionwould result in a 1.4 dB increase in traffic noise level at the residential receivers. As discussed inSection 6.3, where the predicted noise increase is 2 dB(A) or less, then no further assessment isrequired. Therefore no further on-road noise assessment is required.
9.2 Sleep disturbance
The main source of noise associated with the Project that has the potential to disturb the adjacentresidential properties is the closing of car doors. The sound power level of door slams is shown inTable 21.Table 21 LAmax noise levels associated with car door slams
Noise source LAmax Sound power level, dB(A)
Car door closing 93
Based on the LAmax noise level presented in Table 21, the LAmax levels at nearby residential propertiesis predicted to be as shown in Table 22.
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Table 22 LAmax noise levels at sensitive receivers at night
ReceiverCriteria night Predicted Compliance
LAmax dB(A) LAmax dB(A) Yes/No
R1 - 269 Browning Street, Bathurst 52 31 Yes
R2 - 265 Browning Street, Bathurst 52 43 Yes
R3 - 263 Browning Street, Bathurst 52 45 Yes
R4 - 261 Browning Street, Bathurst 52 45 Yes
R5 - 259 Browning Street, Bathurst 52 46 Yes
R6 - 257 Browning Street, Bathurst 52 45 Yes
R7 - 255 Browning Street, Bathurst 52 44 Yes
R8 - 253 Browning Street, Bathurst 52 40 Yes
R9 - 249 Browning Street, Bathurst 52 39 Yes
R10 - 247 Browning Street, Bathurst 52 39 Yes
R11 - 245a Browning Street, Bathurst 52 36 Yes
It can be seen from Table 22 that the noise levels due to the door slams, at the residential receivers iswithin the sleep disturbance criteria discussed in Section 6.2.3 and is therefore considered acceptable.
9.3 People in outdoor areas
The areas of the Project which may generate noise during operation include the basketball courts, theoutdoor gymnasiums and the visitor courtyard. In order to determine the potential impact from the useof the outdoor spaces assumptions have been made regarding the vocal effort of the visitors andprisoners.
Details of the source sound power levels used for the assessment of the patron noise are provided inTable 23 below. This information has been derived from Table 16.1 and Figure 16.1 in the “Handbookof Acoustical Measurements and Noise Control” (Third Edition, 1998) by C.M. Harris.
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Table 23 Summary of speech noise source levels
Source
Sound power level, Leq, dB Totalsoundpowerlevel, 1
dB(A)
Octave band centre frequency, Hz
125 250 500 1000 2000 4000 8000
1 person normal vocaleffort (Male)
58 63 67 59 55 51 46 66
1 person raised vocaleffort (Male)
63 68 72 67 62 57 52 72
1 person shouting Vocaleffort (Male)
55 79 88 91 88 80 70 94
10 children aged 3-5years old
60 75 78 75 65 55 38 79
Notes:
1 Derived from Table 16.1 and Figure 16.1 in the “Handbook of Acoustical Measurements and Noise Control” (Third Edition,1998) by C.M. Harris.
9.3.1 Outdoor visitor courtyard
Based on the NBRS Architecture drawings dated 27 March 2018 (provided in Appendix B), there aretwo outdoor courtyards within the visitor building located on the north east corner of the Project Area.Each courtyard has a potential capacity of 40 visitors. An outdoor courtyard also contains a children’splay area. The children’s play area is 9.5 metres by 4.5 metres.
According the architectural drawings, the outdoor courtyards are surrounded by a 5 metre high solidbarrier. Architectural drawings also indicate that the perimeter would consists of a 5 metre highprecast concrete wall.
It has been assumed that of the 40 people in each of the outdoor visitor courtyards, 10 % would bespeaking with a raised voice, 40 % would be speaking with a normal voice and the remaining 50 %would be listening and therefore not talking. It has also been assumed that 10 children would beplaying in the outdoor children’s play area.
9.3.2 Basketball court, gymnasium and outdoor exercise areas
The Project contains four half-court basketball areas with spectator seating, four covered concretebench areas, with six benches and four gymnasium areas, each with 8 stations.
In order to determine the noise emission from these areas the following assumptions have been made:
9.3.2.1 Basketball court
· Four players, all four players would shout for a maximum 25% of a 15 minute period
· Six spectator benches, containing a total of 12 spectators that would all speak with a raised voicefor a maximum 50% of a 15 minute period.
9.3.2.2 Covered concrete bench area
· Six concrete benches, containing 24 people, 10% would be speaking with a raised voice, 40%would be speaking with a normal voice and the remaining 50% would be listening and thereforenot talking.
9.3.2.3 Gymnasium area
· Eight gym stations, each with a person using the equipment
· Four spectators, waiting to use the equipment
· Total of 12 people using the area, 10% would be speaking with a raised voice, 40% would bespeaking with a normal voice and the remaining 50% would be not talking or listening.
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The above assumptions have been duplicated for each of the four basketball courts, covered benchareas and gymnasiums in the proposed expansion.
The assumptions stated above account for 52 people in each of the four section of the proposedexpansion. This results in a total of 208 people. The remaining 12 people (three in each section) havebeen assumed to be engaged conversation with 50% speaking with a normal voice and the remaining50% would be listening and therefore not talking.
Based on the assumptions above, the source sound power levels used for the assessment of thepatron noise are provided in Table 24 below.
It has been assumed that the outdoor areas of the prison would not be used at night.
Table 24 Summary of courtyard, basketball and gymnasium noise source levels
Source
Sound power level, L10, dBTotalsoundpowerlevel,dB(A)
Octave band centre frequency, Hz
63 125 250 500 1000 2000 4000 8000
Outdoor visitor courtyard
40 people talking, 10% witha raised voice and 40%with a normal voice. 10children aged 3-5 years oldplaying.
67 74 84 87 84 75 68 60 87
Basketball courtFour players, shouting for25% of 15 minute period.12 Spectators speakingwith a raised voice for 50%of 15 minute period
64 71 80 88 91 88 81 72 94
Covered concrete benches24 people talking, 10% witha raised voice and 40%with a normal voice.
64 71 75 78 73 68 64 58 78
Gymnasium12 people talking, 10% witha raised voice and 40%with a normal voice.
65 72 77 83 80 76 70 62 84
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9.4 Predicted noise levels
Noise contour maps for the daytime and night-time operations of the Project are shown in the attachedAppendix C. The results of the daytime assessment are detailed in Table 25.Table 25 Operational daytime noise levels at sensitive receivers
ReceiverDaytimeCriteria
Predicted Compliance
LAeq, (15min) dB(A) LAeq, (15min) dB(A) Yes/No
R1 269 Browning Street, Bathurst 45 31 Yes
R2 265 Browning Street, Bathurst 45 34 Yes
R3 263 Browning Street, Bathurst 45 36 Yes
R4 261 Browning Street, Bathurst 45 37 Yes
R5 259 Browning Street, Bathurst 45 38 Yes
R6 257 Browning Street, Bathurst 45 38 Yes
R7 255 Browning Street, Bathurst 45 39 Yes
R8 253 Browning Street, Bathurst 45 39 Yes
R9 249 Browning Street, Bathurst 45 39 Yes
R10 247 Browning Street, Bathurst 45 37 Yes
R11 245a Browning Street, Bathurst 45 37 Yes
R12 34 Mitchell Highway, Bathurst 65 24 Yes
R13 369 Stewart Street, Bathurst 70 29 Yes
R14 369a Stewart Street, Bathurst 70 31 Yes
It can be seen from Table 25 that the noise levels at all noise sensitive receivers meet the NPfI projectnoise trigger levels as presented in Table 12 during the daytime. The results of the night-timeassessment are detailed in Table 26.
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Table 26 Operational night-time noise levels at sensitive receivers
ReceiverNight-time
CriteriaPredicted Compliance
LAeq, (15min) dB(A) LAeq, (15min) dB(A) Yes/No
R1 269 Browning Street, Bathurst 36 27 Yes
R2 265 Browning Street, Bathurst 36 30 Yes
R3 263 Browning Street, Bathurst 36 32 Yes
R4 261 Browning Street, Bathurst 36 35 Yes
R5 259 Browning Street, Bathurst 36 36 Yes
R6 257 Browning Street, Bathurst 36 36 Yes
R7 255 Browning Street, Bathurst 36 33 Yes
R8 253 Browning Street, Bathurst 36 32 Yes
R9 249 Browning Street, Bathurst 36 32 Yes
R10 247 Browning Street, Bathurst 36 31 Yes
R11 245a Browning Street, Bathurst 36 30 Yes
It can be seen from Table 26 that the noise levels at all noise sensitive receivers meets the projectnoise trigger levels during the night-time.
9.5 Public Address System
The existing correctional facility uses a Public Address (PA) system for short announcements toinmates between 8 am and 4 pm. The proposed facility extension will also require PA systemcoverage. The speaker level and location should be designed to achieve the noise emission criteria inSection 6.0 at sensitive receivers.
Given the existing use of a PA system at the site, perimeter barriers and the infrequent use of thesystem, the PA system is unlikely to adversely impact nearby sensitive receivers.
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10.0 ConclusionsAECOM has been commissioned by NSW Department of Justice to undertake a Noise and VibrationImpact Assessment of the Project.
The scope of the assessment included noise measurement surveys, establishing noise and vibrationcriteria, noise and vibration predictions for construction scenarios, a noise and vibration impactassessment relative to appropriate noise management levels and recommendations for noise andvibration control measures where necessary.
The noise and vibration assessment was carried out in accordance with NSW regulatory requirementswhich results in addressing the assessment as follows:
Construction noise and vibration
The construction noise assessment was conducted in accordance with EPA’s ICNG. Typical worstcase construction scenarios have been considered. Construction activities would occur during thedaytime and the night-time periods. Worst case construction scenarios in the following areas havebeen considered:
· Establishment of roadways and construction of kitchen, industries and maintenance buildings
· Demolition of K Block and earthworks
· Construction of new maximum security buildings
The noise assessment associated with the Project indicates some exceedances of the NSW ICNGnoise management levels at the nearest residential receivers. Measures have been recommended tomitigate the construction noise impact at adjacent residential receivers. The measures include the:
· Completion of a CNVMP
· Community consultation
· Appropriate selection and maintenance of equipment
· Use of hoardings
· Scheduling of work for less sensitive time periods, where feasible
· Situating plant in less noise sensitive locations
· Induction and training of construction site workers
· Construction traffic management
· Noise monitoring.
Construction road traffic noise
The road traffic noise associated with construction activities was assessed in accordance with EPA’sNSW RNP guidelines. The road traffic noise assessment associated with construction indicates thatthe noise increase on construction routes is predicted to be negligible.
Operational impacts
Noise impacts upon nearby sensitive receivers due to the mechanical plant, inmates and visitors inoutdoor areas and a new car park are within the acceptable noise criteria. The PA system extensionwould be designed to not adversely impact nearby noise sensitive receivers.
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Appendix AAcoustic Terminology
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Appendix A Acoustic TerminologyThe following is a brief description of acoustic terminology used in this report.
Sound power level The total sound emitted by a source
Sound pressure level The amount of sound at a specified point
Decibel [dB] The measurement unit of sound
A Weighted decibels [dB(A)] The A weighting is a frequency filter applied to measured noiselevels to represent how humans hear sounds. The A-weightingfilter emphasises frequencies in the speech range (between 1kHzand 4 kHz) which the human ear is most sensitive to, and placesless emphasis on low frequencies at which the human ear is not sosensitive. When an overall sound level is A-weighted it isexpressed in units of dB(A).
Decibel scale The decibel scale is logarithmic in order to produce a betterrepresentation of the response of the human ear. A 3 dB increasein the sound pressure level corresponds to a doubling in the soundenergy. A 10 dB increase in the sound pressure level correspondsto a perceived doubling in volume. Examples of decibel levels ofcommon sounds are as follows:
0dB(A)
30dB(A)
40dB(A)
50dB(A)
70dB(A)
80dB(A)
90dB(A)
100dB(A)
110 dB(A)
115dB(A)
120dB(A)
Threshold of human hearing
A quiet country park
Whisper in a library
Open office space
Inside a car on a freeway
Outboard motor
Heavy truck pass-by
Jackhammer/Subway train
Rock concert
Limit of sound permitted in industry
747 take off at 250 metres
Frequency [f] The repetition rate of the cycle measured in Hertz (Hz). Thefrequency corresponds to the pitch of the sound. A high frequencycorresponds to a high pitched sound and a low frequency to a lowpitched sound.
Equivalent continuous soundlevel [Leq]
The constant sound level which, when occurring over the sameperiod of time, would result in the receiver experiencing the sameamount of sound energy.
Lmax The maximum sound pressure level measured over themeasurement period.
Lmin The minimum sound pressure level measured over themeasurement period.
L10 The sound pressure level exceeded for 10% of the measurementperiod. For 10% of the measurement period it was louder than theL10.
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L90 The sound pressure level exceeded for 90% of the measurementperiod. For 90% of the measurement period it was louder than theL90.
Ambient noise The all-encompassing noise at a point composed of sound from allsources near and far.
Background noise The underlying level of noise present in the ambient noise whenextraneous noise (such as transient traffic and dogs barking) isremoved. The L90 sound pressure level is used to quantifybackground noise.
Traffic noise The total noise resulting from road traffic. The Leq sound pressurelevel is used to quantify traffic noise.
Day The period from 0700 to 1800 h Monday to Saturday and 0800 to1800 h Sundays and Public Holidays.
Evening The period from 1800 to 2200 h Monday to Sunday and PublicHolidays.
Night The period from 2200 to 0700 h Monday to Saturday and 2200 to0800 h Sundays and Public Holidays.
Assessment backgroundlevel [ABL]
The overall background level for each day, evening and night periodfor each day of the noise monitoring.
Rating background level[RBL]
The overall background level for each day, evening and night periodfor the entire length of noise monitoring.
Weighted sound reductionindex [Rw]
A single figure representation of the air-borne sound insulation of apartition based upon the R values for each frequency measured in alaboratory environment.
*Definitions of a number of terms have been adapted from Australian Standard AS1633:1985“Acoustics – Glossary of terms and related symbols”, the EPA’s Noise Policy for Industry and RoadNoise Policy.
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Appendix BArchitectural Drawings
AECOM Bathurst Correctional Centre Expansion
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Appendix B Architectural Drawings
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DP 75
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DP 75
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EXIST
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7955
64
BROWNING STREETBROWNING STREETBROWNING STREETBROO
KE M
OORE
AVE
NUE
1. GHS/MCR
2. IND 3. CLNC/RCE 4. VISITS
5. EDU
6. SEG
7a. MMX 110
7b. MMX 110
+RL 703.00
+RL 704.00 +RL 703.50 +RL 703.00
+RL 704.00 +RL 703.00
+RL 704.80 +RL 704.50
COURT
INTERNAL PERIMETER ROAD
STERILE ZONE
STAFF (47) VISITOR CARPARK (75)
8. KITCHEN/ LAUNDRY
+RL 705.259. GM/ BULK
STORE+RL 705.00
10. VEHICLE SHED + FUEL
+RL 704.75
EXTERNAL PERIMETER ROAD
INTE
RN
AL P
ERIM
ETER
RO
AD
STER
ILE
ZON
E
EXTE
RNAL
PER
IMET
ER R
OAD
STERILE ZONE
VEHICLE LOCK
STER
ILE
ZON
E
INTE
RN
AL P
ERIM
ETER
RO
AD
RISING STEP
TANKS
TWO LAYERS MESH FENCE WITH 900 DRUM
PRECAST WALL WITH RAZOR TAPE
SECURED COVERED WALKWAY
LEGEND
EXISTING MACEM FENCING
EXISTING CONCRETE WALL
NEW BUILDINGS
NEW BUILDINGS
EXISTING BUILDINGS
NORTH
AMENDMENTS CIVIL & STRUCTURAL PERUMAL PEDAVOLI ARCHITECTST + 61 2 9291 0000WEB: www.ppa.com.auNominated Architect:David Evans
MECH, VERT. TRANSPORT. & ESD
ELECTRICAL
HYDRAULIC LANDSCAPE
SECURITY & COMMUNICATIONS REVISIONDRAWING NUMBER
SERIES NUMBERPHASEDISCIPLINESECTOR
DRAWING NAME
PROJECT NORTH
TYPE
BATHURST CORRECTIONAL CENTRE EXPANSIONBrowning St & Brooke Moore Ave, Bathurst NSW 2795
1
4/05
/201
8 11
:49:
46 A
M
SCALE As indicated @ A1
220 - ARC - DD - DWG - 00_021SITE PLAN WITH SURVEY OVERLAY
MAY 2018
Northrop Consulting Engineers(02) 9241 4188
Norman Disney & Young(03) 9862 6800
Norman Disney & Young(03) 9862 6800
Woolacotts Consulting Engineers(02) 8241 9900
Taylor Brammer Landscape(02) 9922 2511
Webb Australia Group (NSW)(02) 9418 1444
REV BY DATE DESCRIPTION1 AY 04/05/18 ISSUED FOR INFORMATION
AECOM Bathurst Correctional Centre Expansion
09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
Appendix CNoise Contour Maps
AECOM Bathurst Correctional Centre Expansion
09-Aug-2018Prepared for – NSW Department of Justice – ABN: 11 005 693 553
C-1
Appendix C Noise Contour Maps
© Land and Property Information 2015, © Department of Finance, Services & Innovation 2017
0 75 15037.5
metres
´
1:3,288 (when printed at A3)
A3 size
AECOM does not warrant the accuracy or completeness of information displayed in this map and any person using it does so at their own risk. AECOM shall bear no responsibility or liability for any errors, faults, defects, or omissions in the information.
www.aecom.com
PROJECT ID
LAST MODIFIEDCREATED BY
60568012TR17 MAR 2018
DATUM GDA 1994, PROJECTION MGA ZONE 55
Review of EnvironemntalFactorsNoise Impact Assessment
Appendix C1Figure
NSW Department of Justice
Noise Contours - Daytime operationalnoise emissionBathurst Correctional Facility Expansion
NB: Noise contours do not include 2.5 dB facade correction
Sound Pressure Level, LAeq dB(A)
40 45 50 55 60 65 70 75
LEGENDCourtyard fencePerimeter concrete fenceExisting prison wallNew Correctional Centre BuildingsNorth oval buildings
BuildingsUse
CommercialCorrectional CentreIndustrialResidential
© Land and Property Information 2015, © Department of Finance, Services & Innovation 2017
0 75 15037.5
metres
´
1:3,288 (when printed at A3)
A3 size
AECOM does not warrant the accuracy or completeness of information displayed in this map and any person using it does so at their own risk. AECOM shall bear no responsibility or liability for any errors, faults, defects, or omissions in the information.
www.aecom.com
PROJECT ID
LAST MODIFIEDCREATED BY
60568012TR17 MAR 2018
DATUM GDA 1994, PROJECTION MGA ZONE 55
Review of EnvironemntalFactorsNoise Impact Assessment
Appendix C2Figure
NSW Department of Justice
Noise Contours - Night time operationalnoise emissionBathurst Correctional Facility Expansion
NB: Noise contours do not include 2.5 dB facade correction
Sound Pressure Level, LAeq dB(A)
30 35 40 45 50 55 60 65 70 75
LEGENDCourtyard fencePerimeter concrete fenceExisting prison wallNew Correctional Centre BuildingsNorth oval buildings
BuildingsUse
CommercialCorrectional CentreIndustrialResidential