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ABERCROMBIE PRECINCT REDEVELOPMENT Construction Noise & Vibration Management Plan Rp001 R00 2013244SY JH-B834-PLN-EMP-NVECP-012-A 11 July 2013

Disclaimer: This report has been provided by John Holland Pty Ltd (John Holland) for information purposes only and is strictly confidential. John Holland or anyone on its behalf does not warrant, guarantee or assume any responsibility or duty of care in respect of the information in this report, or represents that the information in this report is accurate, adequate, suitable or complete for any purpose. A recipient of this report must not copy, produce or disclose any information in this report without the prior written permission of John Holland. To the extent permitted by law, John Holland or anyone on its behalf, accepts no liability for any claim, loss, damage, expense or costs incurred by any person as a result of or in connection with any information in this report.

4/46 Balfour St Chippendale NSW 2008 T: +612 9282 9422 Fax: +612 9281 3611 www.marshallday.com

Project:

ABERCROMBIE PRECINCT REDEVELOPMENT

Prepared for:

John Holland Pty Ltd Level 3, 65 Pirrama Road Pyrmont NSW 2009 Australia

Attention:

Alyce Curto

Report No.:

Rp001 R00 2013244SY

Disclaimer Reports produced by Marshall Day Acoustics Pty Ltd are prepared based on the Clientâ&#x20AC;&#x2122;s objective and are based on a specific scope, conditions and limitations, as agreed between Marshall Day Acoustics and the Client. Information and/or report(s) prepared by Marshall Day Acoustics may not be suitable for uses other than the original intended objective. No parties other than the Client should use any information and/or report(s) without first conferring with Marshall Day Acoustics. Copyright The concepts and information contained in this document are the property of Marshall Day Acoustics Pty Ltd. Use or copying of this document in whole or in part without the written permission of Marshall Day Acoustics constitutes an infringement of copyright. Information shall not be assigned to a third party without prior consent.

Document control Status:

Rev:

Draft

Final

R00

Comments Issued to client for comment Amended to incorporate comments from John Holland

Date:

Author:

Reviewer:

9 Jul 2013

Anjali Chandhok

Ian Wallbank

11 Jul 2013

Anjali Chandhok

Ian Wallbank

EXECUTIVE SUMMARY Marshall Day Acoustics (MDA) has been engaged by John Holland Pty Limited to prepare a noise and vibration impact assessment and management plan for the proposed University of Sydney Abercrombie Precinct construction. Background noise levels as identified in the Development Application Noise Impact Assessment report prepared by MDA (refer Rp001 R06 201009de Noise Impact Assessment) dated 2 April 2012 have been used to determine the construction noise criteria in accordance with the requirements of the EPA Interim Construction Noise Guideline. Construction vibration criteria applicable to this site have been determined in accordance with the requirements of the EPA's Assessing vibration: a technical guideline. Noise levels from proposed construction activities have been calculated at the nearest noise sensitive receivers for the various phases of construction. The calculated noise levels indicate that construction activities have the potential to be above the construction noise criteria. This is not untypical for construction sites in urban residential areas. A construction noise management plan has been detailed with a discussion of practicable noise mitigation measures and management practices. High vibration generating activities are expected to take place only for a minimal duration at this site. Vibration from construction activities is not expected to exceed the nominated criteria and can be managed by adhering to the restrictions set out in the project approval, monitoring vibration levels at the nearest sensitive receivers and offering periods of respite from activities such as rock breaking and rock hammering.

This document may not be reproduced in full or in part without the written consent of Marshall Day Acoustics Pty Ltd Rp001 R00 2013244SY Abercrombie Precinct Redevelopment Construction Noise & Vibration Management Plan Disclaimer: This report has been provided by John Holland Pty Ltd (John Holland) for information purposes only and is strictly confidential. John Holland or anyone on its behalf does not warrant, guarantee or assume any responsibility or duty of care in respect of the information in this report, or represents that the information in this report is accurate, adequate, suitable or complete for any purpose. A recipient of this report must not copy, produce or disclose any information in this report without the prior written permission of John Holland. To the extent permitted by law, John Holland or anyone on its behalf, accepts no liability for any claim, loss, damage, expense or costs incurred by any person as a result of or in connection with any information in this report.

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TABLE OF CONTENTS 1.0

INTRODUCTION ........................................................................................................................ 5

2.0 2.1 2.2

DEVELOPMENT DESCRIPTION ................................................................................................. 5 Site location and description ................................................................................................... 5 Construction hours ................................................................................................................... 7

3.0 3.1 3.2 3.2.1 3.2.2

NOISE AND VIBRATION CRITERIA ............................................................................................ 8 Construction noise criteria ...................................................................................................... 8 Construction vibration criteria ................................................................................................ 8 Vibration limits - Effects on structures ................................................................................... 9 Vibration limits - Effects on people ......................................................................................... 9

4.0 4.1

CONSTRUCTION NOISE AND VIBRATION IMPACT ASSESSMENT ......................................... 9 Summary of findings .............................................................................................................. 12

5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7

CONSTRUCTION NOISE AND VIBRATION MANAGEMENT PLAN ........................................ 13 Community consultation and negotiation ........................................................................... 13 Scheduling of activities........................................................................................................... 13 Management work practices................................................................................................. 14 Construction noise and vibration control measures ........................................................... 14 Noise monitoring .................................................................................................................... 15 Vibration monitoring.............................................................................................................. 16 Complaint handling-procedure ............................................................................................. 16

APPENDIX A

GLOSSARY OF TERMINOLOGY

APPENDIX B

CONSTRUCTION NOISE CRITERIA

APPENDIX C

CONSTRUCTION NOISE AND VIBRATION IMPACT ASSESSMENT

APPENDIX D

CONSTRUCTION NOISE SOURCES

Page 4

1.0

INTRODUCTION Marshall Day Acoustics Pty Ltd (MDA) has been engaged by John Holland Pty Ltd to assess the potential noise and vibration impact from the construction associated with the University of Sydney Abercrombie Precinct redevelopment. The University of Sydney has obtained approval from the NSW Department of Planning for the project under Section 75J of the Environmental Planning & Assessment Act 1979 (Project Approval).The Project Approval requires the preparation of a noise and vibration management plan for the construction phase. The objective of the plan is to minimise noise and vibration impacts during construction on noise sensitive receivers in the surrounding area. This report addresses the following: • A description of the site and surrounding area in respect to noise generation • An assessment of the existing noise environment in accordance with the NSW EPA's Interim Construction Noise Guideline (CNG) • A review of construction noise and vibration under guidance from the CNG and the EPA's Assessing Vibration: a technical guideline (Assessing vibration guideline) • The potential noise and vibration impacts associated with the proposed construction works •

A discussion of construction noise and vibration mitigation measures and management practices.

Acoustic terminology used throughout this report is defined in Appendix A. 2.0

DEVELOPMENT DESCRIPTION

2.1

Site location and description The proposed development to be located in Darlington, NSW comprises the redevelopment of land which is bounded by Abercrombie Street, Codrington Street, Darlington Lane and Darlington Public School. The proposed development comprises the construction of a new six storey business school fronting Codrington Street, a four storey building for student accommodation fronting Abercrombie Street and two levels of underground car parking. The surrounding area comprises a mix of residential, educational and commercial premises. The nearest noise sensitive receivers are residences on Darlington Road and Abercrombie Street, educational facilities located on Abercrombie Street and buildings associated with the University of Sydney on Codrington Street.

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The following receivers detailed in Table 1 overleaf have been selected to be representative for the purpose of our assessment and calculations. Table 1: Representative receivers Receiver

Location

Description

109 Darlington Road

Residential Terrace Housing Two storey residential dwelling located north of the construction site. This receiver has been selected to be representative of the residential properties adjoining the site on Darlington Road, a minority of which are privately owned with the remaining owned by the University of Sydney.

415 Abercrombie Street

Darlington Public School Educational premises adjacent to the western site boundary

405 Abercrombie Street

Boundary Lane Childcare Centre Child care centre located adjacent to the south-western site boundary

391 Abercrombie Street

The Shepherd Centre Education facility for hearing-impaired children

385 Abercrombie Street

Mandelbaum House Residential college located adjacent to the southern site boundary

Figure 1 overleaf indicates the extent of the construction site and the location of the nearest impacted receivers as well as the receivers chosen as representative for the purposes of calculation.

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Figure 1: Location of the subject construction site and representative receivers

2.2

Construction hours Condition D11 of the Project Approval stipulates the following hours of construction for the project: • between 0700-1800hrs, Mondays to Fridays inclusive • between 0800-1500hrs, Saturdays • no work on Sundays and public holidays. Furthermore, Condition D12(e) provides the following schedule for noisier construction activities such as rock breaking, rock hammering, sheet piling, pile driving and any similar activity: • between 0730-1000hrs and 1430-1800hrs, Monday to Friday on school days • between 0730-1200hrs and 1400-1800hrs, Monday to Friday during Darlington Public School holidays • between 0900-1300hrs on Saturdays.

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3.0

NOISE AND VIBRATION CRITERIA

3.1

Construction noise criteria Construction noise criteria for this development have been derived based on the requirements of the CNG. Background noise levels identified in the Noise Impact Assessment report prepared by MDA (refer Rp001 R06 201009de Noise Impact Assessment) have been used to derive the appropriate criteria. Table 2 below presents a summary of the criteria with a full derivation set out in Appendix B. Table 2: Construction noise management levels Receiver

Type

RBL, dB LA90

Management level, dB LAeq, 15mins

Residential

Educational

551

Childcare2

Educational

551

Residential

1: Based on an internal noise level of 45dBA and a minimum difference between the internal noise level and external noise level of 10dB with windows open for adequate ventilation. 2: Childcare centre treated as a residential receiver.

In implementing the management level, the CNG requires that all feasible and reasonable work practices be employed. Where it is anticipated that the management level will be exceeded, all potentially impacted receivers should be informed. 3.2

Construction vibration criteria Condition D14 of the Project Approval provides a summary of the vibration criteria applicable to this project. Condition D14 states: Vibration caused by construction at any residence or structure outside the subject site must be limited to: (a) for structural damage vibration, German Standard DIN 4150 Part 3 Structural vibration Effects of vibration on structures (b) for human exposure to vibration, the evaluation criteria presented in the EPA Interim Construction Noise Guideline (c) vibratory compactors must not be used closer than 30 metres from residential buildings unless vibration monitoring confirms compliance with vibration criteria specified above (d) limits in (conditions) D12 and D13 apply unless otherwise outlined in a Construction Noise and Vibration Management Plan.

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3.2.1 Vibration limits - Effects on structures The German Standard DIN 4150 provides vibration limits below at which there is unlikely to be any cosmetic damage to buildings . The vibration limits are detailed in Table 3. Table 3: Vibration limits according to DIN 4150 Line

Type of structure

Guideline values for velocity, in mm/s of vibration in horizontal plane of highest floor, at all frequencies

Buildings used for commercial purposes, industrial buildings, and buildings of similar design

Dwellings and buildings of similar design and/or occupancy

III

Structures that, because of their particular sensitivity to vibration, cannot be classified under lines I and II and are of great intrinsic value (e.g. listed buildings under preservation order)

2.5

3.2.2 Vibration limits - Effects on people Condition D14 detailed above refers to the CNG for evaluation criteria relating to human exposure to vibration. The CNG makes reference to the EPA document Assessing vibration: A technical guideline, which uses a vibration dose value (VDV) criteria to assess the severity of intermittent vibration, such as that experienced from construction activities including piling and rock breaking. The VDV criteria for a range of receiver types as detailed in the guideline are provided in Table 4below. Table 4: Acceptable vibration dose values for intermittent vibration (m/s1.75) Day-time1 Receiver type

Preferred value

Maximum value

Residences

0.20

0.40

Offices, schools, educational institutions and places of worship

0.40

0.80

1: Day-time 0700-2200hrs.

The preferred values indicate a low probability of adverse comment, and the maximum values indicate that adverse comments may be expected. 4.0

CONSTRUCTION NOISE AND VIBRATION IMPACT ASSESSMENT The construction period associated with the proposed development is estimated to take approximately 18 months.

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An estimated timeline for construction activities has been provided to MDA by John Holland Pty Ltd and is detailed in Table 5 below. Table 5: Anticipated construction timeline Phase Enabling works

Site establishment

Piling

Bulk excavation

Time period Month 1

Duration

Description

2-3 weeks

Complete adjoining property early works packages and construction of a semi permanent road.

1-2 weeks

Adjust site fencing, prepare site compound area and install shedding. Demolish existing asphalt, remove sandstone kerbs/gutters, remove redundant hardstands and trees.

2-4 weeks

Complete works associated with the RAP report.

4-6 weeks

Piling and capping beams.

6-8 weeks

Bulk excavation works in conjunction with piling. Will involve large number of truck movements and rock breaking/sawing activities in final 1-2 weeks.

Month 2 - Month 3

Month 2 - Month 4

Shotcrete to retaining walls to be completed in a cut and expose manner. 1-2 weeks

Detailed excavation and trimming. Possibility of rock breaking/sawing activities.

Month 4 - Month 9

5 months

Basement to transfer slab (ground floor)

Month 7 - Month 14

8 months

Remaining structure

Month 9 - Month 12

4 months

Facade construction

Internal fitout

Month 8 - Month 18

11 months

Internal fitout works

Commissioning

Month 17 & 18

2 months

Commissioning works

Detailed excavation Month 4

Detailed works

There are several noise sources associated with the different phases of construction that have the potential to increase noise at the nearest sensitive receivers. A list of anticipated This document may not be reproduced in full or in part without the written consent of Marshall Day Acoustics Pty Ltd Rp001 R00 2013244SY Abercrombie Precinct Redevelopment Construction Noise & Vibration Management Plan Disclaimer: This report has been provided by John Holland Pty Ltd (John Holland) for information purposes only and is strictly confidential. John Holland or anyone on its behalf does not warrant, guarantee or assume any responsibility or duty of care in respect of the information in this report, or represents that the information in this report is accurate, adequate, suitable or complete for any purpose. A recipient of this report must not copy, produce or disclose any information in this report without the prior written permission of John Holland. To the extent permitted by law, John Holland or anyone on its behalf, accepts no liability for any claim, loss, damage, expense or costs incurred by any person as a result of or in connection with any information in this report.

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activities and equipment involved in the demolition, site preparation and construction phase of the development has been provided by John Holland Pty Ltd and is detailed in Table 6 below. Table 6: Anticipated activities and equipment schedule Phase

Activities

Equipment

Enabling Works & Site Establishment

Compacting base & levelling of site

1 x Smooth Drum Roller

Spread base material

1 x Skid steer

Shape and trim area

2 x 12T Excavator

Distribution of material and removal of waste material from site

Trucks

Loading, stockpiling and ripping

2 x 30-35T Excavators

Hammering corners and trimming faces

1 x 20-24T Excavator

Bulk trim to vertical faces

1 x 12T Excavator

Ripping and pushing

1 x D9 Dozer

Site cleaning and dust suppression

Street Sweeper

Distribution of material and removal of waste material from site

Trucks

Loading, stockpiling and ripping

2 x 30-35T Excavators

Shoring - piling

2 x 40-50T Drilling Rigs

Anchor drilling

2T Anchor Rig

Trimming for shotcrete, capping beams

1 x 20-24T Excavator

Ripping and pushing

1 x 5T Excavator

Preparation, mixing and discharging of concrete

2 x Static concrete line pumps

Distribution of material and removal of waste material from site

Trucks

Loading, stockpiling and ripping

2 x 30-35T Excavators

General requirements

1 x 12T Saw

General requirements

1 x 20T Hammer

Cleaning out pads

1 x 5-10T Excavator

Bulk works

Construction (Piling)

Detailed works

Page 11

Phase

General construction (Structure)

Activities

Equipment

Distribution of material and removal of waste material from site

Trucks

Manoeuvring materials on site

2 x Electric hammer head Tower cranes

General requirements

1 x Double man and material hoist

General requirements

1 x Formwork hoist

Our assessment of noise and vibration levels from construction activities associated with the proposed development is summarised below. Refer Appendix C for our detailed assessment. Noise levels associated with each noise source are detailed in Appendix D. 4.1

Summary of findings The predicted LAeq noise levels from construction equipment indicate that noise from construction activities will exceed the noise management levels at the residential receivers. The average noise levels from enabling works and site establishment activities are calculated to be between 15dB to 18dB above the management levels. Average noise levels from bulk works are calculated to be between 8dB and 14dB above the management levels, between 9dB and 15dB during the piling phase and between 7dB and 14dB during the detailed works phase. These exceedances are typical of construction sites in the vicinity of urban residential areas. Table 7 below indicates the dominant noise source for each phase of construction. Table 7: Dominant noise generating equipment Phase Enabling works & Site Establishment

Dominant noise generating plant Smooth drum roller

Bulk works

Dozer

Piling

Dozer

Detailed works

Concrete saw

In accordance with the CNG and the conditions set out in the Project Approval, community consultation and negotiation will be required as the predicted construction noise levels will exceed the management levels at the nearest residences. Vibration generating activity will be minimised through the construction methodologies and selection of equipment. The current vibration generating activities proposed on-site are not expected to generate significant levels of vibration. Vibration monitoring will be undertaken to determine compliance with the nominated criteria. Management practices relating to This document may not be reproduced in full or in part without the written consent of Marshall Day Acoustics Pty Ltd Rp001 R00 2013244SY Abercrombie Precinct Redevelopment Construction Noise & Vibration Management Plan Disclaimer: This report has been provided by John Holland Pty Ltd (John Holland) for information purposes only and is strictly confidential. John Holland or anyone on its behalf does not warrant, guarantee or assume any responsibility or duty of care in respect of the information in this report, or represents that the information in this report is accurate, adequate, suitable or complete for any purpose. A recipient of this report must not copy, produce or disclose any information in this report without the prior written permission of John Holland. To the extent permitted by law, John Holland or anyone on its behalf, accepts no liability for any claim, loss, damage, expense or costs incurred by any person as a result of or in connection with any information in this report.

Page 12

community consultation and notification as well as construction noise and vibration control measures have been detailed in Section 5 below. 5.0

CONSTRUCTION NOISE AND VIBRATION MANAGEMENT PLAN The CNG sets out that all reasonable and feasible work practices are applied to ensure that potential noise and vibration impacts from construction activities are minimised. It is envisaged that a number of the management practices and noise and vibration control techniques summarised below will be applied to this project.

5.1

Community consultation and negotiation It is recommended that the following practices relating to community consultation be adopted: â&#x20AC;˘ All potentially impacted receivers (identified in Figure 1) should be informed, reasonably ahead of time, of the nature of works to be carried out, the expected noise levels from noisier activities and their duration, and the measures being taken to minimise noise from the construction. â&#x20AC;˘ Effective channels of communication must be established between John Holland, the Local Authority and receivers with contact details for registering complaints made readily available to the community. â&#x20AC;˘ A site representative responsible for all matters relating to noise should be appointed and contact details of this representative should be readily available. A site information board should be installed in front of the construction site with the name and contact details for the site representative.

5.2

Scheduling of activities Due to the sensitivity of the Darlington Public School, Childcare centre and the Shepherd Centre which are located in close proximity to the construction site, the Project Approval stipulates the time periods during which high impact activities such as rock breaking, rock hammering, sheet piling and pile driving etc., are permitted to occur.

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These activities will be restricted so as to only take place as per the schedule below: • between 0730-1000hrs and 1430-1800hrs, Monday to Friday on school days • between 0730-1200hrs and 1400-1800hrs, Monday to Friday during Darlington Public School holidays • between 0900-1300hrs on Saturdays. This will ensure that periods of respite are provided to the nearest noise sensitive receivers. Respite periods may also need to be provided in response to complaints from affected receivers. Additionally it is envisaged that the following work practices related to scheduling construction activities shall also be adopted: • Consult with Darlington Public School to ensure that noise-generating construction works in the vicinity of affected school buildings are not scheduled to occur during examination periods. • Scheduling any deliveries to the site and removal of waste material from the site to occur during proposed construction hours only. • Scheduling vehicle deliveries so that there are no trucks waiting in the street and ensuring that all delivery vehicle engines are switched off during loading and unloading activities. 5.3

Management work practices The following work practices shall be adopted to reduce the impact from the construction site on the nearest receivers: • Ensuring that deliveries and access to the site occur quietly and efficiently. Truck drivers must be kept informed of designated entry and egress points and acceptable delivery hours. • Selection of plant with low inherent potential for generation of noise and vibration

5.4

Construction noise and vibration control measures Predicted noise levels take into account the construction of a 2m high solid acoustic barrier along the perimeter of the site. This acoustic barrier will be effective in providing screening to the receivers located at ground level and to any pedestrian traffic around the site. However, it is noted that this barrier will not be effective in providing screening of construction noise to elevated receivers. It is proposed that electric rather than diesel tower cranes are to be employed on site to minimise the noise impact from crane operations.

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The following additional noise control measures will be employed: • Using temporary site structures and material stockpiles as noise barriers • Reducing the line-of-sight from noise source to receiver through erection of barriers as necessary around static, high noise items such as high-duty compressors • Siting of noisy plant as far away from sensitive properties as permitted by site constraints and avoiding unnecessary revving of engines and switching off equipment when it is not required and is safe to do so • Use of broadband noise generating reverse alarms as an alternative to traditional 'beeper' alarms. 5.5

Noise monitoring Monitoring of construction noise will be required at this site to ascertain the impact of construction noise on the nearest affected receivers once construction activities commence. The measured noise level data will be used to determine the effectiveness of the recommended noise control measures and management practices. The following noise monitoring methodology is proposed as a minimum: • Attended noise monitoring will be conducted for a representative period during each of the four identified construction phases identified in Appendix C. The contractor must ascertain the noisiest period during each construction phase which will be chosen for monitoring. The results of the monitoring will be compiled in a report, comparing the measured noise levels at each identified receiver in Table 1 with the predicted construction noise levels identified against each phase in Tables C1 to C4 of Appendix C. Any exceedances over and above those predicted shall be commented on, and if particular works are identified creating excessive noise, further noise mitigation options shall be explored and employed if possible. This report should be provided to the EPA at their request. • Records of all monitoring will be maintained and kept readily available • Noise monitoring will also be conducted on an as-required basis in response to receipt of any complaints. Typically, investigations and monitoring will occur following receipt of 2 or more complaints. This has been detailed in Section 5.7 below. • Changes to proposed construction equipment or processes may warrant short-term noise monitoring to determine the impact that the new equipment/ processes have on the amenity of the nearest receivers. The developer and contractor will need to determine the need for this as construction progresses.

Page 15

5.6

Vibration monitoring MDA has been informed that all piling on site will be augured. This method of piling is employed because it minimises the generation of vibration compared to other piling methods. Furthermore, the Project Approval sets out approved hours during which high vibration impact activities such as rock breaking, rock hammering and similar activity may take place. Adherence to these approved hours will allow adequate respite periods to be provided to the nearest impacted receivers. Monitoring of vibration levels at the nearest affected receivers can be effective in the management of vibration impacts from construction. It is proposed that permanent monitoring of vibration levels will be carried out at one of the nearest representative receiver locations (Mandelbaum House) and any exceedances of pre-determined trigger levels will be investigated before works continue on site. The vibration monitoring system will need to be setup so that warning of trigger levels can either be visually, audibly communicated or otherwise transmitted via email or SMS alerting the site representative of encroaching exceedances. All vibration monitoring that is undertaken should be reported and the results should be maintained to assess compliance with the criteria set in the Project Approval.

5.7

Complaint handling-procedure • The site representative responsible for matters relating to noise will be responsible for handling complaints and will need to be readily accessible to respond and if necessary react effectively should they arise. All feasible and reasonable measures will be applied to identify the source of the complaint, and additional mitigation shall be considered if reasonable and feasible. • Attended noise monitoring may be required if a complaint is received regarding a specific plant item. Short-term (5-30 minute) attended measurements will be carried out in the vicinity of the noise generating plant item as well as the complainant's premises at the time of worst impact. Further noise control strategies will be implemented if deemed required to address the complaint where these measures reasonable and feasible. • A register of all complaints will need to be maintained documenting the nature of the complaints and the procedures applied to resolve the complaint. •

Project specific contact details to register complaints are detailed below: − Project contact number: 1800 855 262 − Project contact email:

abercrombie.precinct@sydney.edu.au

− Project website:

http://sydney.edu.au/abercrombie_precinct/

Page 16

APPENDIX A GLOSSARY OF TERMINOLOGY

Ambient

The ambient noise level is the noise level measured in the absence of the intrusive noise or the noise requiring control. Ambient noise levels are frequently measured to determine the situation prior to the addition of a new noise source.

SPL or LP

Sound Pressure Level A logarithmic ratio of a sound pressure measured at distance, relative to the threshold of hearing (20 ÂľPa RMS) and expressed in decibels.

SWL or LW

Sound Power Level A logarithmic ratio of the acoustic power output of a source relative to 10-12 watts and expressed in decibels. Sound power level is calculated from measured sound pressure levels and represents the level of total sound power radiated by a sound source.

Decibel The unit of sound level. Expressed as a logarithmic ratio of sound pressure P relative to a reference pressure of Pr=20 ÂľPa i.e. dB = 20 x log(P/Pr)

dBA

The unit of sound level which has its frequency characteristics modified by a filter (A-weighted) so as to more closely approximate the frequency bias of the human ear.

A-weighting

The process by which noise levels are corrected to account for the non-linear frequency response of the human ear.

LAeq (t)

The equivalent continuous (time-averaged) A-weighted sound level. This is commonly referred to as the average noise level. The suffix "t" represents the time period to which the noise level relates, e.g. (8 h) would represent a period of 8 hours, (15 min) would represent a period of 15 minutes and (2200-0700) would represent a measurement time between 10 pm and 7 am.

LA90 (t)

The A-weighted noise level equalled or exceeded for 90% of the measurement period. This is commonly referred to as the background noise level.

LAmax

The A-weighted maximum noise level. The highest noise level which occurs during the measurement period.

Vibration

When an object vibrates, it moves rapidly up and down or from side to side. The magnitude of the sensation when feeling a vibrating object is related to the vibration velocity. Vibration can occur in any direction. When vibration velocities are described, it can be either the total vibration velocity, which includes all directions, or it can be separated into the vertical direction (up and down vibration), the horizontal transverse direction (side to side) and the horizontal longitudinal direction (front to back).

PPV

Peak Particle Velocity For Peak Particle Velocity (PPV) is the measure of the vibration aptitude, zero to maximum. Used for building structural damage assessment.

VDV

Vibration Dose Value Vibration Dose Value is based on British Standard BS 6472:1992 Guide to Evaluation of Human Exposure to Vibration in Buildings (1Hz to 80Hz) and provides guidelines for the evaluation of whole body exposure to intermittent vibration. VDV can be used to take into account the weighted measured RMS vibration from many vibration sources including rail vehicles, construction equipment such as jackhammers and industry. VDV takes into account the duration of each event and the number of events per day, either at present or in the foreseeable future and calculates a single value index.

APPENDIX B CONSTRUCTION NOISE CRITERIA The NSW EPA Interim Construction Noise Guideline (CNG) provides guidance for assessing noise associated with construction activities. The CNG sets out management levels above which there may be community reaction to construction noise. The noise management levels for residential receivers affected by construction noise are derived from the Rating Background Level detailed in the Environmental Assessment prepared by MDA (refer Rp001 R06 2010009de Noise Impact Assessment) and adding 10dB during the recommended hours set out in the CNG. The construction noise management levels for residential receivers that will be impacted during the construction phases of this project are provided in Table B1 below. We note that for the purpose of our assessment we have treated the child care centre located south of the site as a residential receiver. Table B1: Construction noise management levels for residential receivers Day of week

Time period

RBL, dB LA90

Management level, dB LAeq,15mins

Darlington Road Residential Monday to Friday

0700-1800hrs

Saturday

0800-1300hrs

Boundary Lane Childcare Centre and Mandelbaum House Residential Monday to Friday

0700-1800hrs

Saturday

0800-1300hrs

In applying the management level, the CNG requires that all feasible and reasonable work practices are employed. Where the management level is exceeded, all potentially impacted receivers should be informed. The CNG also sets management levels for other sensitive land uses such as schools. These are detailed in Table B2 below. Table B2: Construction noise management levels for other sensitive land uses Receiver

Land use

Darlington Public School and

Classrooms at schools and other educational institutions

The Shepherd Centre

Management level, dB LAeq,15mins 451

1: Internal noise level.

APPENDIX C CONSTRUCTION NOISE AND VIBRATION IMPACT ASSESSMENT C1

Construction noise

Noise levels from construction activities have been calculated at the nearest noise sensitive locations during the demolition, excavation and general construction phases. These noise levels have been predicted under guidance from AS2436-2010: Guide to noise control on construction, maintenance and demolition sites. We have presented data below for "worst-case" situations where noise sources will be closest to the noise sensitive receivers and also for the "average" situation, with noise sources located towards the centre of the site. The latter is likely to be representative of the long-term noise emissions. We have assumed that all sources will be working together simultaneously for between 25 and 100% of the time over a 15 minute period. Enabling works and site establishment phase Table C1 below details the predicted noise levels at the nearest receivers during the Enabling works and site establishment phase. Table C1: Predicted noise levels during enabling works and site establishment phase Receiver

Description

Assessment

Calculated noise level, dB LAeq, 15min1

Management level, dB LAeq,

Exceedance, dB

15min

Residential

Worst-case

+27 54

Educational

Average

Worst-case

+15 +25 55

Child-care

Average

Worst-case

+18 +34 55

Educational

Average

Worst-case

+15 +13 55

Residential

Average

Worst-case

Average

1: Noise level calculated at 1.5m above ground level at the property boundary most exposed to construction noise in accordance with the requirements of the CNG. Noise levels at upper floors are likely to be higher.

The calculated levels indicate that activities associated with enabling works and site establishment have the potential to be significantly above the construction noise management levels when at their "worst case" assessment scenario. The smooth drum roller which will be used to compact the base of the semi-permanent road has the highest potential to impact on the nearest receivers. The construction phase average noise levels will also exceed the construction noise management levels; they are calculated to be up to 18dB above the criteria. Disclaimer: This report has been provided by John Holland Pty Ltd (John Holland) for information purposes only and is strictly confidential. John Holland or anyone on its behalf does not warrant, guarantee or assume any responsibility or duty of care in respect of the information in this report, or represents that the information in this report is accurate, adequate, suitable or complete for any purpose. A recipient of this report must not copy, produce or disclose any information in this report without the prior written permission of John Holland. To the extent permitted by law, John Holland or anyone on its behalf, accepts no liability for any claim, loss, damage, expense or costs incurred by any person as a result of or in connection with any information in this report.

Bulk works phase Table C2 below details the predicted noise levels at the nearest receivers during the bulk works phase. Table C2: Predicted noise levels during bulk works phase Receiver

Description

Assessment

Calculated noise level, dB LAeq, 15min1

Management level, dB LAeq,

Exceedance, dB

15min

Residential

Worst-case

+19 54

Educational

Average

Worst-case

+14 +16 55

Child-care

Average

Worst-case

+8 +23 55

Educational

Average

Worst-case

+11 +24 55

Residential

Average

Worst-case

+9 +20 55

Average

+10

The calculated levels indicate that activities associated with the bulk works construction phase of this project have the potential to be significantly above the construction noise management levels when at their "worst case" assessment scenario. The dozer has the highest potential to impact on the nearest receivers. The bulkworks phase average noise levels will also exceed the construction noise management levels; they are calculated to be up to 14dB above the criteria.

Piling phase Table C3 below details the predicted noise levels at the nearest receivers during the piling phase. Table C3: Predicted noise levels during piling phase Receiver

Description

Assessment

Calculated noise level, dB LAeq, 15min1

Management level, dB LAeq,

Exceedance, dB

15min

Residential

Worst-case

+20 54

Educational

Average

Worst-case

+15 +17 55

Child-care

Average

Worst-case

+9 +23 55

Educational

Average

Worst-case

+12 +26 55

Residential

Average

Worst-case

+10 +20 55

Average

+11

The calculated levels indicate that activities associated with the piling phase of this project have the potential to be significantly above the construction noise management levels when at their "worst case" assessment scenario. The dozer has the highest potential to impact on the nearest receivers. The piling phase average noise levels will also exceed the construction noise management levels; they are calculated to be up to 15dB above the criteria.

Detailed works phase Table C4 below details the predicted noise levels at the nearest receivers during the detailed works phase. Table C4: Predicted noise levels during detailed works phase Receiver

Description

Assessment

Calculated noise level, dB LAeq, 15min1

Management level, dB LAeq,

Exceedance, dB

15min

Residential

Worst-case

+18 54

Educational

Average

Worst-case

+14 +14 55

Child-care

Average

Worst-case

+7 +18 55

Educational

Average

Worst-case

+10 +18 55

Residential

Average

Worst-case

+8 +18 55

Average

The calculated levels indicate that activities associated with the detailed construction works phase of this project have the potential to be significantly above the construction noise management levels when at their "worst case" assessment scenario. The detailed works phase average noise levels will also exceed the construction noise management levels; they are calculated to be up to 14dB above the criteria. C2

Construction vibration

All piling on this construction site is expected to be augured. It is unlikely that this method of piling will generate significant levels of vibration at the nearest sensitive receivers. Furthermore, the Project Approval sets out approved hours during which high vibration impact activities such as rock breaking, rock hammering, sheet piling, pile driving etc., can take place. These approved hours ensure that respite periods are afforded to the nearest noise sensitive receivers.

APPENDIX D CONSTRUCTION NOISE SOURCES A variety of construction plant will be used for this project. Table D1 provides a schedule of construction equipment that is anticipated to be used on this site and their noise levels as taken from: â&#x20AC;˘ BS5228:1-2009: Code of practice for noise and vibration control on construction and open sites Part 1: Noise â&#x20AC;˘ Construction noise plant data collected on previous Marshall Day Acoustics' projects Table D1: Construction noise source sound power levels, (LWA), dB re 10-12W Noise source

A-weighted sound power level, dB LWA

Source

Auger piling rig (35T)

107

BS5228:1-2009

Auger piling rig (33T)

108

BS5228:1-2009

Caged material hoist

BS5228:1-2009

Concrete pump

106

BS5228:1-2009

Core drill (electric)

113

BS5228:1-2009

Dozer

113

BS5228:1-2009

Petrol hand-held circular saw

119

BS5228:1-2009

Road Roller

108

BS5228:1-2009

Road sweeper

104

BS5228:1-2009

Tower crane

105

BS5228:1-2009

Tracked excavator (inserting cylindrical metal cage)

102

BS5228:1-2009

Tracked excavator (14T)

BS5228:1-2009

Tracked excavator (22T)

BS5228:1-2009

Tracked excavator (25T)

106

BS5228:1-2009

Tracked excavator (32T)

104

BS5228:1-2009

Tracked excavator (35T)

108

BS5228:1-2009

Truck

106

MDA Database

Wheeled backhoe loader

BS5228:1-2009

We note that the sound power level data sourced from BS5228:1-2009 has been calculated based on Sound Pressure level data at a reference distance of 10m.