Acoustics Vibration Structural Dynamics
MARTIN PLACE METRO CSSI
Construction Noise and Vibration Impact Statement for Demolition of 9-19 Elizabeth Street
7 March 2019
Lendlease Group
TK422-F04 (r9) 9-19 Elizabeth Street Demolition CNVIS.docx
Sydney Melbourne Brisbane Gold Coast Kuwait Renzo Tonin & Associates (NSW) Pty Ltd ABN 29 117 462 861 Level 1/418A Elizabeth St SURRY HILLS NSW 2010 | PO Box 877 STRAWBERRY HILLS NSW 2012 P (02) 8218 0500 F (02) 8218 0501 sydney@renzotonin.com.au www.renzotonin.com.au RENZO TONIN & ASSOCIATES 7 MARCH 2019
Document details
Detail Reference
Doc reference: TK422-F04 (r9) 9-19 Elizabeth Street Demolition CNVIS.docx
Prepared for: Lendlease Group
Address: Towers Sydney Level 14, Tower Three, International Towers Sydney Exchange Place, 300 Barangaroo Avenue, Barangaroo NSW 2000
Attention: Angela Roche
Document control
Non-issued Issued Date Revision history Prepared Instructed Authorised revision revision
20.07.2018 First Draft 0 1 MN CW CW
24.07.2018 Update following LL - 2 MN CW CW comments
16.08.2018 Final 3 4 MN CW CW
17.09.2018 Update based on AA, ER and - 5 MN CW CW Stakeholder comments
4.10.2018 Revise list of childcare centres - 6 MN CW CW
2.11.2018 Final for ER and AA - 7 M Nguyen C Weber C Weber endorsement
26.11.2018 Update based on DPE - 8 M Nguyen C Weber C Weber/P comments Karantonis
07.03.2019 Add additional micro-piling - 9 M Nguyen C Weber C Weber works
Important Disclaimer: The work presented in this document was carried out in accordance with the Renzo Tonin & Associates Quality Assurance System, which is based on Australian Standard / NZS ISO 9001. This document is issued subject to review and authorisation by the Team Leader noted by the initials printed in the last column above. If no initials appear, this document shall be considered as preliminary or draft only and no reliance shall be placed upon it other than for information to be verified later. This document is prepared for the particular requirements of our Client referred to above in the ‘Document details’ which are based on a specific brief with limitations as agreed to with the Client. It is not intended for and should not be relied upon by a third party and no responsibility is undertaken to any third party without prior consent provided by Renzo Tonin & Associates. The information herein should not be reproduced, presented or reviewed except in full. Prior to passing on to a third party, the Client is to fully inform the third party of the specific brief and limitations associated with the commission. In preparing this report, we have relied upon, and presumed accurate, any information (or confirmation of the absence thereof) provided by the Client and/or from other sources. Except as otherwise stated in the report, we have not attempted to verify the accuracy or completeness of any such information. If the information is subsequently determined to be false, inaccurate or incomplete then it is possible that our observations and conclusions as expressed in this report may change. We have derived data in this report from information sourced from the Client (if any) and/or available in the public domain at the time or times outlined in this report. The passage of time, manifestation of latent conditions or impacts of future events may require further examination and re-evaluation of the data, findings, observations and conclusions expressed in this report. We have prepared this report in accordance with the usual care and thoroughness of the consulting profession, for the sole purpose described above and by reference to applicable standards, guidelines, procedures and practices at the date of issue of this report. For the reasons outlined above, however, no other warranty or guarantee, whether expressed or implied, is made as to the data, observations and findings expressed in this report, to the extent permitted by law. The information contained herein is for the purpose of acoustics only. No claims are made and no liability is accepted in respect of design and construction issues falling outside of the specialist field of acoustics engineering including and not limited to structural integrity, fire rating, architectural buildability and fit-for-purpose, waterproofing and the like. Supplementary professional advice should be sought in respect of these issues.
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Contents 1 Nomenclature 6 2 Introduction 7 2.1 Relevant requirements and purpose of this CNVIS 7 2.2 Structure of this CNVIS 7 2.3 Quality assurance 8 3 Description of construction works and hours 9 3.1 Summary of works addressed in this CNVIS 9 3.2 Construction hours 10 3.3 Potential OOHW 11 3.4 Construction methodology (PPA Condition E35) 11 4 Nearest sensitive receivers 13 4.1 Residential receivers 13 4.2 Other sensitive receivers (PPA Condition E34) 13 4.3 Commercial and industrial premises 13 4.4 Heritage receivers 13 5 Construction noise and vibration objectives 15 5.1 Noise goals 15 5.1.1 Noise management levels 15 5.1.2 Respite for high noise impact works (including PPA Conditions E37 and E38) 18 5.1.3 Residential receivers in residential and non-residential zones (PPA Conditions E41 and E42) 18 5.1.4 Sleep disturbance 20 5.1.5 National Standard for exposure to noise 21 5.1.6 Construction related road traffic noise objectives 21 5.2 Vibration goals 21 5.2.1 Disturbance to building occupants (human annoyance) 22 5.2.2 Structural damage to buildings 22 5.2.3 Heritage 23 5.2.4 Sensitive scientific and medical equipment 23 5.2.5 Utilities and other vibration sensitive structures 23 6 Construction noise assessment 24 6.1 Noise prediction methodology 24 6.2 Predicted noise levels 24 6.2.1 Construction 24 6.2.2 Other sensitive receivers (Condition E34) 27 6.2.3 Sleep disturbance 28 6.3 Noise mitigation and management 28
LENDLEASE GROUP MARTIN PLACE METRO CSSI TK422-F04 (R9) 9-19 ELIZABETH STREET DEMOLITION CNVIS.DOCX CONSTRUCTION NOISE AND VIBRATION IMPACT STATEMENT FOR 3 DEMOLITION OF 9-19 ELIZABETH STREET
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6.3.1 Consultation with affected receivers (PPA Condition E33) 28 6.3.2 Other noise control measures 28 6.3.3 Additional noise mitigation measures 29 6.3.4 Attended and real time noise monitoring 30 6.3.5 Complaints handling 31 7 Construction vibration impacts 32 7.1 Minimum buffer distances for vibration intensive plant 32 7.2 Vibration assessment 33 7.2.1 Structural damage 33 7.2.2 Human annoyance 34 7.3 Vibration mitigation measures 35 7.3.1 Vibration control and management measures 35 7.3.2 Additional vibration mitigation measures 35 7.3.3 Attended and real time vibration monitoring 36 7.3.4 Complaints handling 36 8 Ground-borne noise assessment 37 9 Traffic noise assessment 39 10 Cumulative impacts 40 11 Conclusion 41 References 42 APPENDIX A Glossary of terminology 43 APPENDIX B Nearest sensitive receivers and noise management levels 45 APPENDIX C Construction timetable/ activities/ management 48 APPENDIX D Detailed predicted noise levels 50 APPENDIX E Additional noise mitigation 51 APPENDIX F Dates of completed meetings with affected receivers and the consultation presentation 52 APPENDIX G Additional micro-piling works 53
List of tables
Table 3.1: Construction program for demolition, excavation and construction works 9 Table 3.2: Construction hours 11 Table 3.3: Review of demolition methodologies - Demolition of slabs and walls 11 Table 4.1: Identified heritage receivers in proximity to the project 13 Table 5.1: Summary of NMLs 17 Table 5.2: Construction vibration disturbance goals 22 Table 6.1: Summary of construction activities 25 Table 6.2: Summary of construction noise impacts at nearby residential receivers 26
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Table 6.3: E34 affected receiver locations 27 Table 6.4: Site noise control measures 28 Table 6.5: Additional airborne noise mitigation measures 29 Table 6.6: Nominated verification monitoring locations 30 Table 7.1: Minimum working distances (m) for cosmetic damage (continuous vibration). 33 Table 7.2: Minimum working distances (m) for human annoyance (continuous vibration). 33 Table 7.3: Number of buildings within buffer distances for human annoyance 34 Table 7.4: Site vibration control measures. 35 Table 7.5: Additional vibration mitigation measures 36 Table 8.1: Maximum predicted ground-borne noise levels. 37
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1 Nomenclature
The following provides a brief description of the acronyms used within this report. A glossary of acoustic terms used in this report is provided in Appendix A.
Acronym Description
AA Acoustic Adviser
CNVIS Construction Noise and Vibration Impact Statement
CNVMP Construction Noise and Vibration Management Plan
CSSI Critical State Significant Infrastructure
EIS Environmental Impact Statement - Sydney Metro City & Southwest
ICNG Interim Construction Noise Guideline
NCAs Noise Catchment Areas
NML Noise Management Level
OOHW Out Of Hours Works
OSRs Other Sensitive Receivers
PPA Project Planning Approval
SMCSNVS Sydney Metro City and South West Noise and Vibration Strategy
SMCSW Sydney Metro City & Southwest
SSD State Significant Development
TfNSW Transport for New South Wales
TfNSW CNS Transport for NSW Construction Noise Strategy
VDV Vibration dose value – a measure of tactile vibration levels relating to intermittent vibration levels
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2 Introduction
The building at 9-19 Elizabeth Street Sydney is approved to be demolished as part of Macquarie Bank’s State Significant Development (SSD) approval to develop the new Martin Place Station which forms part of the Sydney Metro City & Southwest (SMCSW) project.
This Construction Noise and Vibration Impact Statement (CNVIS) has been prepared on behalf of Lendlease Group in accordance with the Construction Noise and Vibration Management Plan (CNVMP) [TK422-03 (r2) Martin Place CSSI CNVMP] [1], for works associated with the Sydney Metro Martin Place Station (the Project).
2.1 Relevant requirements and purpose of this CNVIS
These proposed works are associated with the construction of the new Martin Place Station for Macquarie Corporate Holdings Pty Ltd (Macquarie).
The Minister approved the Stage 2 (Chatswood to Sydenham) Metro application lodged by Transport for NSW (TfNSW) as a Critical State Significant Infrastructure (CSSI) project (reference SSI 7400) (the CSSI Consent) on 9 January 2017. The Sydney Metro approval has been modified a number of times, including a modification (Mod 3), approved on 22 March 2018. SSI 7400 MOD 3 incorporates Macquarie’s proposed scheme for Martin Place.
Condition E33 from the Project Planning Approval (PPA) requires that:
Construction Noise and Vibration Impact Statements must be prepared for each construction site before construction noise and vibration impacts commence and include specific mitigation measures identified through consultation with affected receivers.
This CNVIS has been prepared to address the potential noise and vibration impacts of the structural demolition of the building at 9-19 Elizabeth Street Sydney. Additional CNVIS’s will be prepared for the bulk excavation and station construction stages.
This CNVIS forms part of the CNVMP for the Project. The construction hours of work are defined by the Project Planning Approval condition as outlined in the CNVMP.
2.2 Structure of this CNVIS
This CNVIS is structured as follows:
• Section 3 - Description of construction works and hours
• Section 4 - Nearest sensitive receivers
• Section 4 - Construction noise and vibration objectives
• Section 6 - Construction noise assessment
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• Section 7 - Construction vibration impacts
• Section 8 - Ground-borne noise assessment
• Section 7 – Traffic noise assessment
• Section 9 – Cumulative impacts
2.3 Quality assurance
The work documented in this report was carried out in accordance with the Renzo Tonin & Associates Quality Assurance System, which is based on Australian Standard / NZS ISO 9001.
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3 Description of construction works and hours
3.1 Summary of works addressed in this CNVIS
This CNVIS provides an assessment of noise and vibration impacts from activities associated with the demolition of 9-19 Elizabeth Street, Sydney. Three major stages are proposed for the Project which are summarised in Table 3.1.
Table 3.1: Construction program for demolition, excavation and construction works
Stage Phase Activities Commencement Completion Related CNVIS
Demolition Site Establish Site as per Site September 2018 October 2018 Early Works Establishment Establishment Plan – including CNVIS [11] perimeter/overhead protection, signage, access, amenities, emergency equipment, storage areas, environmental controls. All site personnel to complete Site Induction All plant to be assessed as per Plant and Equipment checklist
Services Disconnection, isolation of September 2018 October 2018 Disconnection Services
HAZMAT Remove HAZMAT November 2018 May 2019 Removal Obtain Clearance Certificates
Demolition Implement Management Plans & November 2018 May 2019 This CNVIS Demolition Work Plans Complete Change Management As Required Change Management Process
Monitor/ Site Inspections April 2019 August 2019 n/a Review Safe Works Observations Audit
Demolition Post Conditional Surveys April 2019 August 2019 n/a Close Survey of Service locations Complete Demolition Handover Checklist
Bulk To be updated in a later revision of the CNVMP [1] Excavation
Station To be updated in a later revision of the CNVMP [1] precinct construction
The above phases rely on all directions, required approvals, permits, licenses, adjoining owners agreements and approvals being in place to commence in accordance with the above time line.
As mentioned in Table 3.1, the following stages/activities have been assessed in this CNVIS:
• Typical daily activities include deliveries and maintenance;
• Structural demolition: Pulverising as primary method and hammering where necessary.
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• Material load-outs/ deliveries during structural demolition activities;
Construction traffic on the existing road network:
• Light vehicle movements generated by construction personnel travelling to and from work;
• Heavy vehicle movements generated by:
Delivery vehicles bringing raw materials, plant, and equipment to the site;
Spoil trucks removing spoil from the site;
Other activities including early works are proposed to include the disconnection of existing services, erection of scaffolding, installation of construction hoarding, soft strip-out of the building and associated construction traffic on public roads have been covered by the Early Works CNVIS [11].
The structural demolition is expected to commence in November 2018. Stages within the construction period are described in Table C1 of APPENDIX C.
3.2 Construction hours
The construction hours for the Project are defined by Project Planning Approval (PPA) Conditions E36, E37, E38, E41, E42 and E44. The standard hours and out-of-hours work (OOHW) periods are depicted in Table 3.2 below. The OOHW periods are further defined as OOHW Period 1 and 2 based on the Transport for NSW Construction Noise Strategy (TfNSW CNS), as noted in the CNVMP.
Unless otherwise approved, all demolition-related activities in connection with the proposed development will be undertaken within the following standard construction hours per PPA Condition E36:
• Between 7.00am and 6.00pm Monday to Fridays, inclusive
• Between 8.00am and 1.00pm Saturdays
• At no time on Sundays or public holidays
Construction works are also permitted between 7.00 am and 8.00 pm in accordance with PPA Conditions E37 and E38, subject to consultation being undertaken with receivers likely to experience internal noise levels above LAeq(15minute) 60 dB(A) inclusive of a 5 dB penalty (for relevant activities).
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Table 3.2: Construction hours
3.3 Potential OOHW
Out of hours works (OOHW) are not currently proposed for the demolition works. Should OOHW be required (e.g. for the delivery of oversize plant or if consultation with affected receivers results in a preference to undertake some works on Saturday and Sunday when less people are about in the CBD), additional assessment will be required in consultation with the AA on a case-by-case basis in accordance with the Sydney Metro Out of Hours Works Protocol (Reference Document: SM ES-PW-317) or PPA Condition E47.
3.4 Construction methodology (PPA Condition E35)
PPA Condition E35 requires the Proponent to review alternative methods to rock hammering and blasting for excavation as part of the detailed construction planning with a view to adopting methods that minimise impacts on sensitive receivers.
For the proposed demolition works, alternative construction methods to rock hammering have been considered as outlined in the following table to minimise impacts on nearby sensitive receivers.
For the demolition of the boundary wall adjacent to 50 Martin Place, previous experience identified that the safest and least disruptive (to 50 Martin Place and its occupants) method was to score the columns with horizontal saw cuts and then pull them over.
Table 3.3: Review of demolition methodologies - Demolition of slabs and walls
Method Demolition/excavation method Comments
Conventional Method Hammer in situ all of the reinforced This method does not allow sufficient respite concrete walls slabs stairs and the like from hydraulic hammering to be provided to using excavators with hydraulic affected receivers. hammer attachments.
Alternative method - Option 1 Section sawing, slab sawing and wall Saw cutting is considered a high noise activity. sawing the slabs and walls into smaller Considering the duration of saw cutting sections, and then lifting them off the required in this method, it is not considered to building. be more effective than the conventional method from an acoustic standpoint.
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Method Demolition/excavation method Comments
Alternative method - Option 2 Using a combination of mainly The reduction in time spent using hydraulic pulverising, however sometimes hammers will provide opportunity to offer hydraulic hammering to demolish the sufficient respite periods to affected receivers. This option has been adopted reinforced concrete walls, slabs, stairs for the demolition works The use of the pulveriser can be limited due to and the like. Saw cutting may be access limitations, during which the use of a undertaken to remove the boundary hydraulic hammering will be required. wall adjacent 50 Martin Place.
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4 Nearest sensitive receivers
4.1 Residential receivers
To assess and manage construction noise and vibration impact, the residential areas surrounding the Project worksites have been divided into Noise Catchment Areas (NCAs) based on each area’s similar acoustic environment prior to the commencement of construction works. The NCAs have been based on those established in the EIS for the Project [3], with some modifications to allow for site specific characteristics. Only receivers within 300 m are typically included in this CNVIS assessment.
All relevant residential sensitive receivers near the worksite are identified on aerial photographs located in APPENDIX B. At receivers more than approximately 300 m from the construction area, potential construction noise and vibration levels are expected to be within the adopted noise and vibration management levels described in Section 5 of this CNVIS.
4.2 Other sensitive receivers (PPA Condition E34)
PPA Condition E34 states:
Noise generating works in the vicinity of potentially-affected, religious, educational, community institutions and noise and vibration-sensitive businesses and critical working areas (such as theatres, laboratories and operating theatres) must not be timetabled within sensitive periods, unless other reasonable arrangements to the affected institutions are made at no cost to the affected institution or as otherwise approved by the Secretary.
When noise sensitive receivers are predicted to have high noise impacts, Lendlease Group will undertake consultation with identified receivers to determine sensitive periods and will take this into consideration when finalising respite strategies.
4.3 Commercial and industrial premises
All commercial and industrial premises near the worksite have been considered in this assessment.
4.4 Heritage receivers
Heritage receivers have also been identified in the Section 4.2.2 of the CNVMP. Heritage-listed structures close to the work areas are summarised in Table 4.1.
Table 4.1: Identified heritage receivers in proximity to the project
Approximate horizontal Item name Location Listing distance from Project
Commonwealth Bank of 48–50 Martin Place Item 1895 City of Sydney LEP ; SHR Item Adjacent building (< 5m) Australia 01427
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Approximate horizontal Item name Location Listing distance from Project
Former “MLC Building” 38–46 Martin Place Item 1894 City of Sydney LEP ; SHR Item 65 m 00597
Bennelong Stormwater Along Elizabeth & Sydney Water S170 Item 4570854 5 m Channel No 29 Castlereagh Streets includes Martin Place
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5 Construction noise and vibration objectives
5.1 Noise goals
5.1.1 Noise management levels
Construction noise management levels (NMLs) have been determined using the PPA Conditions, in accordance with the Transport for NSW Sydney Metro City & Southwest Construction Noise Strategy (SMCSNVS) [8], which applies the Interim Construction Noise Guideline (ICNG) [4]. NMLs for the nearest residential receivers to the worksite are based on review of available background noise levels from the Environmental Impact Statement (EIS) of the SMCSW project [3].
The NMLs at residential receivers are based on the RBL + 10 dB during the standard daytime periods and RBL + 5 dB during the out-of-hour (OOH) daytime, evening and night-time periods. The NMLs for ‘other’ sensitive receivers are based on the ICNG and apply when in-use.
Receivers are considered ‘noise affected’ where construction noise levels are greater than the NMLs identified in Table 5.1. The noise affected level represents the point above which there may be some community reaction to noise. Where predicted and/or measured construction noise levels are above the NMLs, all feasible and reasonable work practices will be applied to meet the NMLs.
During standard construction hours, a highly affected noise objective of LAeq(15min) 75 dB(A) applies in relation to airborne noise at all residential receivers.
Near the 9-19 Elizabeth Street worksite, different NMLs are applicable to residential and other sensitive land uses. In addition to the ICNG, PPA Conditions E37 and E38 identify additional criteria that are applicable at noise sensitive receivers between 7am and 8pm and PPA Conditions E41 and E42 identify additional criteria that are applicable at residential receivers in non-residential and residential zones during the 8pm to 7am evening/night-time period.
Works during 7am to 8pm day/evening period
Per PPA Conditions E37 and E38, if receivers are predicted to experience internal noise levels greater than LAeq(15minute) 60 dB(A) between 7am and 8pm, consultation is required to determine appropriate hours of respite so that construction noise does not exceed the following levels:
a) LAeq(15 minute) 60 dB(A) inclusive of a 5 dB penalty if rock breaking or any other annoying activity likely to result in ground-borne noise or a perceptible level of vibration is planned between 7am – 8pm for more than 50 percent of the time; and
b) LAeq(15 minute) 55 dB(A) inclusive of a 5 dB penalty if rock breaking or any other annoying activity likely to result in ground-borne noise or a perceptible level of vibration is planned between 7am – 8pm for more than 25 percent of the time.
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Works during 8pm to 7am evening/night period
During the 8 am to 7 pm day/evening period, NMLs of nearby sensitive receivers are based on ICNG. Additionally, in accordance with PPA Conditions E41 and E42, if receivers are noise affected during the 8 pm to 7 am evening/night period, additional mitigation measures must be considered in accordance with the procedure in Addendum A of the SMCSNVS. The adopted assessment process is summarised in Section 5.1.2.
Additional requirements for all periods
In addition to the objectives identified in Table 5.1 and APPENDIX B:
• Where construction activities are tonal or impulsive in nature and are described in the ICNG as being particularly annoying, a +5 dB(A) correction must be added to the activity noise, in accordance with PPA Conditions E37, E38, E41 and E42.
• Activities defined in the ICNG as particularly annoying include but are not limited to the use of ‘beeper’ style reversing or movement alarms; power saws; vibratory rolling; jack hammering, rock hammering or rock breaking; impact piling.
• If construction works include ground-borne noise or a perceptible level of vibration at the affected receiver, a 5 dB(A) penalty should be added to the predicted construction noise level. This is not required by the ICNG, but is required by PPA Conditions E41 and E42.
Summary of NMLs
The NMLs of the proposed construction works are summarised in Table 5.1.
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Table 5.1: Summary of NMLs
- F0 4 (R9) 4 9 Noise Management Levels (dB(A)) Noise Measured RBL (dB(A)) - Based on PPA Conditions E37/E38/E41, Sleep disturbance 19 ELIZABET 19 Receiver type Catchment Based on ICNG, LAeq(15minute) LAeq(15minute) LAmax Area
Day Evening Night Day(S) Day(O) E1/E2 Night Day(S)/ Day(O)/ E1 E2/Night Screening Max ATES H STREET DEMOLITION DEMOLITION HSTREET Residential receivers1
Hosking Place (MP_02) NCA_01 61 56 52 71 (external) 66 (external) 61 (external) 57 (external) 60 (internal) 8pm-9pm: 60 (internal) 65 75 80 (internal) 8pm-9pm: 80 (external) (external) (external) 9pm-7am: 45 (internal)
9pm-7am: 65 (external) CNVIS.DOCX Other sensitive receivers2
Recording studio - - - 25 (internal)3 60 (internal) n/a n/a n/a
Childcare - - - 45 (internal) 60 (internal) n/a n/a n/a
Place of worship - - - 45 (internal) 60 (internal) n/a n/a n/a
Hotel - - - 40 (internal) 60 (internal) n/a 65 75
(external) (external) 17
Commercial - - - 70 (external) 60 (internal) n/a n/a n/a
Industrial - - - 75 (external) 60 (internal) n/a n/a n/a
Note: Day(S): Standard construction hours between 7 am and 6 pm Monday to Friday, 8 am to 1 pm Saturday and no time Sunday and Public Holidays Day(O): OOH day construction hours between 1 pm to 6 pm Saturday and no time Sunday and 8am am to 6 pm Public Holidays E1: evening period from 6pm to 8pm. E2: evening period from 8pm to 10pm
CONSTRUCTION NOISE A NOISE CONSTRUCTION Night: night period from 10pm to 7am 1: PPA Conditions E41 identify additional criteria of LAeq(15minute) 45 dB(A) that are applicable at residential receivers in non-residential and residential zones during the 8pm to 7am evening/night-time period. This is equivalent to an external LAeq(15minute) noise level of 65 dB(A), assuming windows closed. 2: The NMLs for OSRs are only applicable when the premise is in use
FOR DEMOLITION OF 9 OF FORDEMOLITION 3: NMLs derived from AS2107
ND VIBRATION IMPACT IMPACT VIBRATION ND
MARTIN PLACE METRO C METRO PLACE MARTIN
- 19 ELIZABETH STREET ELIZABETH 19
7 MARCH 2019 MARCH 7
STATEMENT STATEMENT
SSI
RENZO TONIN & ASSOCIATES 7 MARCH 2019
5.1.2 Respite for high noise impact works (including PPA Conditions E37 and E38)
Proposed daytime works need to be assessed against the requirements of PPA Conditions E37 and E38. Consultation is required to be undertaken with receivers predicted to experience internal noise levels greater than LAeq(15minute) 60 dB(A), between 7am and 8pm, to determine appropriate hours of respite in accordance with PPA Conditions E37 and E38. Receivers have been identified using the following process:
• An external NML equivalent to an internal noise level of LAeq(15minute) 60 dB(A) was established for all identified receivers:
For residential receivers, the equivalent external NML is based on a 20 dB(A) minimum (conservative) difference between external and internal noise levels (assuming windows closed)
For non-residential receivers with light weight glazing, the equivalent external NML is based on a 20 dB(A) minimum (conservative) difference between external and internal noise levels (assuming windows closed)
For non-residential receivers with heavy glazing, the equivalent external NML is based on a 25 dB(A) minimum (conservative) difference between external and internal noise levels (assuming windows closed)
Where additional information is available (e.g. if residential or non-residential properties have been acoustically treated), alternative outdoor to indoor noise difference will be determined to establish the equivalent external noise threshold
For Channel 7 studios at 52-56 Martin Place Sydney, an assessment was carried out by Pulse Acoustics on behalf of TfNSW to establish the noise sensitivity of the studio from construction noise. The transmission loss testing of the studio façade shows that the noise reduction from outside to inside for impulsive noise sources is 42 dB(A).
• The adopted difference between external and internal noise levels is identified in APPENDIX D.
5.1.3 Residential receivers in residential and non-residential zones (PPA Conditions E41 and E42)
PPA Condition E41 requires that residential receivers within non-residential zones are not above the following internal noise levels (including a 5 dB(A) penalty if considered an annoying activity).
• LAeq(15minute) 60 dB(A) between 8pm and 9pm
• LAeq(15minute) 45 dB(A) between 9pm and 7am.
PPA Condition E42 requires that residential receivers within residential zones are not above internal noise levels of LAeq(15minute) 45 dB(A) (inclusive of a 5 dB(A) penalty if considered an annoying activity) between 8pm and 7am.
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Where the above internal NMLs cannot be achieved, additional mitigation must be offered in accordance with the Sydney Metro City and South West Noise and Vibration Strategy (SMCSNVS) [8].
Addendum A of the SMCSNVS notes that zoning will be used to identify if residential receivers are located within residential or non-residential zones.
Figure 1 is an extract from the Sydney Local Environmental Plan 2012 land zoning map LZN_014 (accessed 13/10/2017). As shown in Figure 1, the nearest residential receivers are in non-residential zones (B8 Metropolitan Centre). On this basis, the following internal noise levels (including a 5 dB(A) penalty if considered an annoying activity) per PPA Condition E41 are applicable:
• Internal LAeq(15minute) 60 dB(A) between 8pm and 9pm
• Internal LAeq(15minute) 45 dB(A) between 9pm and 7am.
Based on a minimum external to internal noise difference of 20 dB(A) (assuming windows closed), equivalent external NMLs of:
• External LAeq(15minute) 80 dB(A) is applicable between 8pm and 9pm
• External LAeq(15minute) 65 dB(A) is applicable between 9pm and 7am
Where predicted levels are above the NMLs, additional mitigation may be required in accordance with the SMCSNVS. These NMLs are summarised in Table 5.1.
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Figure 1: Sydney Local Environmental Plan 2012 land zoning map LZN_014
9-19 Elizabeth Street Project site
5.1.4 Sleep disturbance
Consistent with Section 4.1.4 of the CNVMP, an internal LAmax screening level of 45 dB(A) (internal) and 65 dB(A) (external) has been adopted for potential sleep disturbance. The sleep disturbance screening level is applicable to airborne and ground-borne noise during the 10pm to 7am night-time period at residential receivers and hotels.
Where there are noise events found to be above the initial screening level, further analysis is made to identify:
• the likely number of events that might occur during the night assessment period
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• whether events are above an 'awakening reaction' level of 55 dB(A) LAmax (internal) that
equates to an external NML of LAmax 75 dB(A) (assuming closed windows).
The above NMLs are summarised in Table 5.1.
The ICNG recommends that where construction works are planned to extend over more than two consecutive nights, maximum noise levels and the extent and frequency that maximum noise levels are above the RBL should be analysed.
During construction, a combination of attended and unattended noise monitoring will be undertaken at representative residences most impacted by the works during night-time periods (see Section 6.3.4). The noise monitoring will follow the procedures outlined in Appendix E of the CNVMP, which includes measurement of LAmax or LA1 (1minute) noise metrics. If maximum noise levels are found to be above the internal NML of 45 dB(A) (assuming windows closed), the responsible noise source(s) will be identified and further analysis undertaken to quantify the extent and frequency of these events. Additional feasible and reasonable mitigation measures may need to be considered to reduce potential impacts.
5.1.5 National Standard for exposure to noise
In accordance with PPA Condition E43, the worksite will be managed to ensure that noise generated by construction will not be above the National Standard for exposure to noise in the occupational environment of an eight-hour equivalent continuous A-weighted sound pressure level of LAeq,8h, of 85 dB(A) for any employee working at a location near a Project worksite
5.1.6 Construction related road traffic noise objectives
On the roads immediately adjacent to the construction site, the community may associate heavy vehicle movements with the works. Construction traffic movements on public roads will aim to limit any increase in existing road traffic noise levels to no more than 2 dB(A). All feasible and reasonable noise mitigation and management measures will be implemented.
5.2 Vibration goals
As reported in Section 6.7 and 6.8 of the CNVMP, construction vibration goals have been determined in accordance with PPA Conditions E28 and E28.1 and the Sydney Metro Construction Noise and Vibration Strategy as follows:
• Human annoyance - the acceptable vibration values set out in 'Assessing Vibration: A Technical Guideline' (Department of Environment and Conservation, 2006) [5]; and
• Structural damage - the vibration limits set out in the British Standard 7385 Part 2 (1993) [6].
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5.2.1 Disturbance to building occupants (human annoyance)
For disturbance to human occupants of buildings, we refer to ‘Assessing Vibration; a technical guideline’ [5]. This document provides criteria which are based on the British Standard BS 6472-1992, ‘Evaluation of human exposure to vibration in buildings (1-80Hz)’ [7].
Intermittent vibration is assessed using vibration dose values (VDVs). For the assessment of potential vibration at the nearest vibration sensitive receivers preferred and maximum VDV goals for the day period (7:00am to 10:00pm) are presented in Table 5.2.
Table 5.2: Construction vibration disturbance goals
Vibration Dose Value (VDV), m/s1.75 Location Assessment period1 Preferred values Maximum values
Critical areas2 Day or Night 0.10 0.20
Residences Day 0.20 0.40
Night 0.13 0.26
Offices, schools, educational Day or Night 0.40 0.80 institutions and places of worship
Workshops Day or Night 0.80 1.60
Notes: 1. Daytime is 7:00am to 10:00pm and night-time is 10:00pm to 7:00am 2. Examples include hospital operating theatres and precision laboratories where sensitive operations are occurring. These criteria are only indicative, and there may be a need to assess intermittent values against the continuous or impulsive criteria for critical areas. Source: BS 6472-1992
5.2.2 Structural damage to buildings
A conservative cosmetic vibration damage screening level per receiver type is given below:
• Reinforced or framed structures (Line 1): 25.0 mm/s
• Unreinforced or light framed structures (Line 2): 7.5 mm/s
At locations where the predicted and/or measured vibration levels are greater than shown above (peak component particle velocity), a more detailed analysis of the building structure, vibration source, dominant frequencies and dynamic characteristics of the structure would be required to determine the applicable safe vibration level.
It is noted that vibration levels required to cause initial levels of cosmetic damage are typically 10 x higher than levels that will cause disturbance to building occupants. Many building occupants assume that building damage is occurring when they feel vibration or observe rattling of loose objects, however the level of vibration at which people perceive vibration or at which loose objects may rattle is far lower than vibration levels that can cause damage to structures.
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5.2.3 Heritage
Per PPA Condition E28.1, ’the vibration screening criterion for 50 Martin Place must remain at 7.5 mm/s, unless a detailed investigation of the construction of the building determines that increasing the screening criterion to 25 mm/s is acceptable. The investigation must be undertaken by a suitably qualified structural engineer with experience assessing heritage structures and approved by the Secretary and must be supported by evidence to demonstrate the higher criterion is appropriate.’
For other heritage items noted in the CNVMP, the approach to manage potential vibration impact shall be to:
1) Identify heritage items where the 2.5 mm/s peak component particle velocity objective may be exceeded during specific construction activities
2) Structural engineering report to be undertaken on identified heritage items, to confirm structural integrity of the building and confirm if item is ‘structurally sound’
3) If item confirmed as ‘structurally sound’, the screening criteria in Section 5.2.2 shall be adopted, or
4) If item confirmed as ‘structurally unsound’, the more conservative cosmetic damage objectives of 2.5 mm/s peak component particle velocity would be adopted.
5.2.4 Sensitive scientific and medical equipment
No sensitive scientific or medical equipment are known near the assessed works. If they are identified, relevant vibration criteria should be established for each item in line with Section 6.8.2 of the CNVMP [1], and any corresponding management or mitigation measures determined.
5.2.5 Utilities and other vibration sensitive structures
Bennelong Stormwater Channel No 29 will be managed as a heritage item as described in section 5.2.3.
The presence of other nearby utilities or vibration sensitive structures should be investigated prior to undertaking the works. If any utilities or other vibration sensitive structures are identified, relevant vibration criteria will be established for each item per Section 6.8.3 of the CNVMP [1], and any corresponding management or mitigation measures determined.
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6 Construction noise assessment
6.1 Noise prediction methodology
Modelling and assessment of airborne noise impacts from activities associated with the construction works were determined by modelling the noise sources, receiver locations, topographical features, and possible noise mitigation measures using a Cadna-A computer noise model developed for this project. The model calculates the contribution of each noise source at identified sensitive receiver locations and allows for the prediction of the total noise from a site for the various stages of the construction works.
The noise prediction models consider:
• Location of noise sources and sensitive receiver locations.
• Height of sources and receivers referenced to one metre digital ground contours for the site area and surrounding area.
• Sound Power Levels (Lw) of plant and equipment likely to be used during the various construction activities (see Table C1 in APPENDIX C). Table C1 also identifies the plant and equipment that will operate during each assessment period.
• Separation distances between sources and receivers.
• Ground type between sources and receivers.
• Attenuation from barriers (natural and purpose built).
Key details regarding the construction site layout, the likely plant and equipment (including truck movements), and hours of operation were informed by the Design and Construction Teams. This information is presented in APPENDIX C and formed the basis for all modelling assumptions used in this assessment.
6.2 Predicted noise levels
6.2.1 Construction
Noise emissions were determined by modelling the noise sources, receiver locations, and operating activities, based on the information presented in APPENDIX C. Predicted LAeq noise levels from the sites are presented in APPENDIX D for all receivers in the NCAs. The predictions in APPENDIX D are representative of external noise levels during the construction works and are assessed against equivalent external NMLs.
The noise predictions presented in this CNVIS represent a realistic worst-case scenario when construction occurs at work locations close to residences and other sensitive receivers. At each receiver, noise levels will vary during the construction period based on the position of equipment within the worksite, the distance to the receiver, the construction activities being undertaken and the noise levels
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of particular plant items and equipment. Actual noise levels will often be less than the predicted levels presented in this CNVIS.
A summary of the construction scenarios is provided in Table 6.1. The potential noise impacts are evaluated for works during three stages of demolition including the upper floors (Level 11), approximately mid-way through the demolition (Level 6) and the lower levels (Level 1). For each of these, two scenarios are evaluated, including high noise activities including rock hammering (H) and lower impact works using pulverisers (P).
Table 6.1: Summary of construction activities
Construction stage assessment Activity Location(s) Timing of activities code
Standard hours works
S1_H Structural demolition with hammering 9-19 Elizabeth – Level 11 7am-6pm Monday to Friday Material load out 9-19 Elizabeth 8am-1pm Saturday S2_H Structural demolition with hammering 9-19 Elizabeth – Level 6
Material load out 9-19 Elizabeth S3_H Structural demolition with hammering 9-19 Elizabeth – Level 1
Material load out 9-19 Elizabeth
S1_P Structural demolition with pulverising 9-19 Elizabeth – Level 11
Material load out 9-19 Elizabeth S2_P Structural demolition with pulverising 9-19 Elizabeth – Level 6
Material load out 9-19 Elizabeth
S3_P Structural demolition with pulverising 9-19 Elizabeth – Level 1
Material load out 9-19 Elizabeth
Works during 7am to 8pm day/evening period
Table 6.2 summarises the predicted impacts for each construction stage in each NCA. The colours in the table indicate whether receivers in the NCA comply with the NML and, where predicted levels are expected to be above the relevant NMLs, the perceived impact. Where predicted and/or measured construction noise levels are above the NMLs, all feasible and reasonable work practices will be applied to meet the NMLs.
The impacts presented are as follows for Standard Hours, based on NMLs derived from the ICNG:
◆ Below NML
◆ < 10dB(A) above NML - construction noise clearly audible
◆ > 10dB(A) above NML - construction noise clearly moderately intrusive
◆ > 75dB(A) - highly noise affected (for residential receivers)
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The impacts presented are as follows for Daytime (from 7am to 8pm), based on NMLs derived from PPA Conditions E37/E38:
◆ Noise levels predicted to be below the internal NMLs
Noise levels predicted to be above the internal NMLs
Table 6.2: Summary of construction noise impacts at nearby residential receivers
Level of compliance with NML NCA Standard hours - ICNG Standard daytime – E37/E38 S1_H S2_H S3_H S1_P S2_P S3_P S1_H S2_H S3_H S1_P S2_P S3_P MP_01 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ MP_02 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ MP_03 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ MP_04 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ OSR ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆
Notes: OSR: this includes all commercial, industrial and other sensitive receivers.
Discussion of predicted noise levels
In relation to residential receivers, the nearest residential receivers near the proposed demolition works are located at 1-5 Hosking Place (MP_02). At this locality, the highest noise levels are predicted to occur during scenario S1_H (i.e. when rock hammers are required on the upper floors). For this scenario, noise levels are predicted to be up to 3 dB(A) above the external NML of 71 dB(A), derived in accordance with the ICNG. For all scenarios, internal noise levels are predicted to be below the internal NML of 60 dB(A) per PPA Conditions E37/E38.
At 50 Martin Place, airborne noise levels from demolition works will be highest at the northern façade which is directly adjacent to the worksite. However, this façade comprises a solid masonry wall without windows which effectively blocks airborne noise transmission into the building. Potential noise impacts at 50 Martin Place will therefore be highest on the eastern and western facades which include windows with a reduced airborne noise transmission path.
External noise levels at the eastern facade are predicted to be 77 dB(A). Based on a 20 dB(A) minimum (conservative) difference between external and internal noise levels, internal noise levels are predicted to be 57 dB(A) and below the internal NML of 60 dB(A) in PPA Condition E37/E38. External noise levels at the western facade are predicted to be a further 10 dB(A) lower.
For other sensitive receivers (OSRs) near the proposed demolition works, Table 5.1 indicates that NMLs derived in accordance with the ICNG are lower than the equivalent external NMLs in PPA Conditions E37/E38. The results in Table 6.2 indicate that noise levels are predicted to be more than 10 dB(A) above the ICNG NMLs for the majority of construction scenarios. For all scenarios, internal noise levels are predicted to be below the internal NML of 60 dB(A) per PPA Conditions E37/E38.
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On this basis respite from airborne noise associated with the proposed demolition works is unlikely to be required in accordance with PPA Condition E38.
The noise levels outside the Channel 7 recording studio are predicted to be below the external noise level of 85 dB(A) at 2 m from the façade as recommended in the Pulse Acoustic report by 10 dB(A) and comply with the internal NMLs per PPA Conditions E37/E38. Based on the predicted noise levels, the potential impact at Channel 7 is minimal and thus consultation is unlikely to be required for airborne noise associated with demolition works.
Proposed measures to minimise noise levels are outlined in Section 6.3. For more detailed predictions, see Appendix D. For more detailed additional noise measures, refer to Appendix E.
6.2.2 Other sensitive receivers (Condition E34)
Table 6.3 and APPENDIX B identify other sensitive receivers that are located near the worksite in accordance with PPA Condition E34.
In accordance with Condition E34, these receivers are to be consulted as part of the management of the works so that activities are not undertaken within sensitive periods for each receiver, or other suitable arrangements are agreed to.
Internal noise levels at the Castlereagh Street Early Learning Centre are predicted to comply with the NMLs during demolition works based on its setback position on the ground floor towards the rear of the building. Internal noise levels at the Explore and Develop Childcare are predicted to be above the NMLs by 6 dB(A) during demolition works, assuming a minimum of 30 dB(A) inside-outside noise reduction with double glazing. External noise levels at the CTA Business Club, Travelodge Hotel and Channel 7 studios are predicted to be 0-10 dB(A) above the NMLs during demolition works.
Table 6.3: E34 affected receiver locations
Other sensitive receivers (Condition E34)
Address Business name Other Sensitive Receiver Category
9 Castlereagh Street Sydney Castlereagh Street Early Learning Childcare Centre
15 Castlereagh Street Sydney Explore and Develop Childcare
27-39 Castlereagh Street Sydney CTA Business Club Hotel (bars and lounges)
165 Phillip Street Sydney Travelodge Hotel Hotel (bars and lounges)
52-56 Martin Place Sydney Channel 7 Recording Studio
APPENDIX F outlines the dates of completed meetings with affected sensitive receivers and the consultation presentation at the meetings.
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Agreed respite is in-line with previous commitments from the TSE contract for continuity:
• No hydraulic hammering between 7am and 8am and between 12pm and 1pm.
• Maximising use of pulverisers instead of hammering to minimise impacts.
6.2.3 Sleep disturbance
No construction works are proposed to be undertaken during night-time periods. Sleep disturbance at the nearest residential receivers and hotels are therefore not applicable to the proposed demolition works.
6.3 Noise mitigation and management
6.3.1 Consultation with affected receivers (PPA Condition E33)
PPA Condition E33 requires consultation with affected receivers to assist in determining site-specific mitigation measures.
Lendlease Group has and will continue to consult with potentially affected stakeholders including business and residential receivers regarding specific mitigation measures applicable to the demolition works. Consultation to date has included Macquarie Bank, Channel 7, CTA Business Club, Travelodge, Explore and Develop Childcare and Castlereagh Street Early Learning Centre. Ongoing consultation will occur to understand stakeholders’ noise and vibration expectations and preferences for timing of high impact noise respite. This is consistent with requirements in PPA Conditions E34 and E38.
6.3.2 Other noise control measures
The following standard noise control measures, in addition to those outlined in APPENDIX C, are recommended to reduce potential noise impacts:
Table 6.4: Site noise control measures
Control type Control measure Typical use
At-Source Noise control kits Plant that is brought to site for regular use should meet the sound power Control limits identified in Table C1. Where plant are above limits then the plant may Measures require installation of ‘noise control kits’ to comply with the noise limits in Table C1. Such ‘noise control kits’ comprise: • high performance ‘residential-grade’ exhaust mufflers, • additional engine cowling / enclosure lined inside with sound absorbent industrial-grade foam, and • air intake and discharge silencers / louvres. The need to fit ‘noise control kits’ onto the identified plant, will be confirmed once each plant item is tested prior to its regular use on site.
Limit equipment in use Only the equipment necessary during each stage of the OOHW will be used.
Timing of equipment in Where practicable, activities and plant will be limited as outlined in Table C1 use (APPENDIX C).
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Control type Control measure Typical use
Limit activity duration Any equipment not in use for extended periods shall be switched off. For example, heavy vehicles should switch engines off when not in use.
Use and siting of plant Avoid/ limit simultaneous operation of noisy plant and equipment within discernible range of a sensitive receiver. Direct noise-emitting plant away from sensitive receivers where practicable. Locate fixed location plant items as far from sensitive receivers as practicable.
Equipment selection Use quieter and less noise/ vibration emitting construction methods where feasible and reasonable.
Non-tonal reversing Alternative reverse alarms, such as ‘quackers’ will be installed on all plant and alarms equipment, where practicable.
Noise Site inductions & All employees, contractors and subcontractors will receive a Project Management Toolbox Talks induction. The environmental component may be covered in toolboxes and Measures should include: • location of nearest sensitive receivers • relevant project specific and standard noise and vibration mitigation measures; • permitted hours of work; • OOHW Procedure and Form • construction employee parking areas.
Community consultation Inform community of construction activity and potential impacts.
Behavioural practices No swearing or unnecessary shouting or loud stereos/radios on site. No dropping of materials from height, throwing of metal items and slamming of doors.
Noise monitoring Noise monitoring is to be carried out as detailed in Section 6.3.4.
6.3.3 Additional noise mitigation measures
Table 6.5 below should be used to advise the appropriate additional mitigation during construction, as outlined in Section 8.2 of the CNVMP. These measures are consistent with the approach outlined in the SMCSNVS [8].
Table 6.5: Additional airborne noise mitigation measures
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LB = Letter box drops SN = Specific notifications RO = Project specific respite offer V = Verification monitoring IB = individual briefing AA = Alternative accommodation
APPENDIX E presents a summary of the additional noise mitigation measures applicable for construction activities where, after application of all reasonable and feasible mitigation options, construction noise levels are still above the NMLs.
Prior to the commencement of works, residential receivers around the site, identified in APPENDIX E, will be notified to advise that noise from the works may at times be audible. All potentially impacted receivers will be kept informed of the nature of works to be carried out, expected noise levels and duration, as well as given appropriate enquiries and complaints contact details (see Section 6.3.5).
6.3.4 Attended and real time noise monitoring
Attended noise monitoring will be undertaken for the purpose of verifying that noise levels are consistent with the predicted levels in this CNVIS and to determine whether any additional mitigation or management measures are required (see Section 9.1.4 of CNVMP). Attended measurements will be undertaken at the first opportunity following the commencement of each phase of works, in response to noise-related complaints or as requested by the AA / Sydney Metro. Noise monitoring is subject to obtaining the property owner/occupier’s consent to access the property (where required).
Attended noise monitoring will be undertaken at one of the representative residential receivers identified in Table 6.6 in NCAs most impacted by the works (i.e. a minimum of one location for each NCA). Nominated attended measurement locations have been selected with the best opportunity to validate the predicted noise levels.
Table 6.6: Nominated verification monitoring locations
NCA Nominated receiver address Monitoring locations
MP_02 50 Martin Place Sydney Footpath on Elizabeth Street
15 Castlereagh Street Sydney Footpath on Castlereagh Street
Explore and Develop Childcare Internal noise measurements 15 Castlereagh Street
MP_04 52-56 Martin Place Sydney Footpath on Elizabeth Street
Notes: Monitoring on private property is subject to owner consent and where relevant, occupier consent
If verification monitoring shows that the external noise levels from long-term construction works are consistently above external equivalent NMLs at the most sensitive noise receivers, more detailed analysis should be conducted to quantify the building façade loss and the potential of being above the internal NMLs.
Periodic assessment of plant noise levels will be undertaken in accordance with Section 9.1.3 and Table 8.2 of the CNVMP to confirm the plant noise levels are within the APPENDIX C Table C1.
Real time (unattended) noise monitoring will be undertaken to satisfy PPA Condition C11. For the demolition works, real time noise monitoring is proposed to be undertaken at a suitable internal
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location within 50 Martin Place due to its close proximity to the works. During the proposed demolition works, the preferred monitoring location will be at an internal location within the building opposite the floor where demolition works are occurring (i.e. noise monitoring location will move down the building alongside the top-down demolition works).
The real-time noise monitor(s) will be installed prior to commencement of the demolitions works.
All noise monitoring will follow the procedures outlined in Appendix D of the CNVMP.
6.3.5 Complaints handling
Noise complaints received and responded to will be managed in accordance with the CNVMP.
Transport for NSW operate a 24-hour construction complaints line (1800 171 386). Enquiries/ complaints may also be received through the Sydney Metro project email ([email protected]).
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7 Construction vibration impacts
7.1 Minimum buffer distances for vibration intensive plant
From the plant and equipment listed in APPENDIX C, the dominant vibration generating plant and equipment include:
• Jackhammer
• Excavator with hammer (up to 35 tonnes)
Potential vibration generated to receivers is dependent on separation distances, the intervening soil and rock strata, dominant frequencies of vibration, and the receiver structure.
For excavation with rockbreakers, vibration levels are also dependent on the strength of the rock or other materials (e.g. excavation in hard rock will cause higher vibration levels compared with breaking the surface of pathways or road surfaces). For demolition works, vibration levels are also dependent on the floor level where vibration-generating works are undertaken. Providing that there is no structural connection with adjacent buildings (other than via the ground), vibration levels will be highest in adjacent buildings when demolition works are undertaken on the lower floors.
The recommended minimum working distances for vibration intensive plant are presented in Table 7.1 and Table 7.2. These distances are conservatively based on excavation of hard rock. Site specific buffer distances for vibration significant plant items must be measured on site where plant and equipment is likely to operate close to or within the minimum working distances for cosmetic damage (Table 7.1). At locations where vibration levels are above the human annoyance levels, respite periods may need to be implemented to minimise potential impacts (see Section 7.3.2).
Unlike noise, vibration cannot be readily predicted. There are many variables from site to site, for example soil type and conditions, sub surface rock, building types and foundations, and actual plant on site. The data relied upon in this assessment is taken from a database of vibration levels measured at various sites or obtained from other sources (e.g. BS5228-2:2009). They are not specific to this project as final vibration levels are dependent on many factors including the actual plant used, its operation and the intervening geology between the activity and the receiver.
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Table 7.1: Minimum working distances (m) for cosmetic damage (continuous vibration).
Minimum working distance (m)
Reinforced or Sensitive 50 Martin Unreinforced or light Plant item framed structures structures (e.g. Place4 framed structures (e.g. (e.g. commercial heritage residential buildings) 1 buildings)1 structures) 2
Jackhammer 13 13 13 13
Excavator with hammer 5 10 15 10
Note 1: Initial screening test criteria reduced by 50% due to potential dynamic magnification in accordance with BS7385. 2: In accordance with Section 5.8.1 of CNVMP, a site inspection should determine whether a heritage structure is structurally unsound. 3: Minimum working distances are in 5m increments only to account for the intrinsic uncertainty of this screening method. Jackhammers are likely to have minimum working distances smaller than 5 m (e.g. 1m in accordance with TfNSW CNS). 4: As per PPA Condition E28.1, “the vibration screening criterion for 50 Martin Place must remain at 7.5 mm/s”
Table 7.2: Minimum working distances (m) for human annoyance (continuous vibration).
Minimum working distances, m
Plant item Residences Critical 3,4 4 1,4 Offices Workshops areas Day2 Night2
Jackhammer 1 1 1 1 1
Excavator with hammer 45 30 35 20 15
Notes 1: Examples include hospital operating theatres and precision laboratories where sensitive operations are occurring. 2: Daytime is 7 am to 10 pm; Night-time is 10 pm to 7am. 3: Examples include offices, schools, educational institutions and place of worship. 4: Applicable when in use.
7.2 Vibration assessment
7.2.1 Structural damage
Approval Condition E29 requires owners of properties at risk of being above the screening criteria for cosmetic damage to be notified before the commencement of vibration-generating works.
From the scope of works proposed in this CNVIS, there is only structure (50 Martin Place) within the minimum working distances established for cosmetic damage from excavators with hammer. Per PPA Condition 28.1, a vibration screening criterion of 7.5mm/s is applicable at 50 Martin Place. Subject to further detailed assessment by a suitably qualified structural engineer with experience assessing heritage structures, this criterion could potentially be increased to 25 mm/s.
The proposed demolition works at 9-19 Elizabeth has a minimum slant distance of less than 5 m to the 50 Martin Place building. This is less than minimum working distances recommended in Table 7.1 for typical plant items. Vibration monitoring is required at this location to ensure that vibration levels remain below the 7.5mm/s criterion. If the criterion is not able to be achieved with conventional excavation methods, alternative excavation methods (such as wire saw cutting) may need to be considered. This may include further structural assessment of 50 Martin Place by a by a suitably
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qualified structural engineer with experience assessing heritage structures per Approval Condition E28.1 (if required), to increase the criterion to 25 mm/s.
In accordance with the Revised Environmental Management Measure NV4 detailed in the CNVMP [1], a combination of attended and unattended vibration monitoring is proposed at 50 Martin Place to verify that vibration levels remain in compliance with the structural damage screening criterion, where plant needs to operate within the minimum working distance identified in Table 6.1. If monitoring identifies that vibration is likely to be above the cosmetic damage screening criterion, a different construction method with lower source vibration levels will be considered.
At all other nearby buildings, vibration levels are predicted to be below the vibration goals in 5.2. It is noted that vibration levels required to cause minor cosmetic damage are typically 10 x higher than levels that will cause disturbance to building occupants. Many building occupants assume that building damage is occurring when they feel vibration, however the human perception threshold is far lower than vibration levels that can cause damage to structures.
7.2.2 Human annoyance
The numbers of buildings where there is a probability of adverse comment to or disturbance from vibration are shown in Table 7.3.
Table 7.3: Number of buildings within buffer distances for human annoyance
Plant item Work Zone Properties Land use
Excavator with hammer 9-19 Elizabeth Street 50 Martin Place, Sydney Commercial
As shown in Table 7.3, it can be seen that the building at 50 Martin Place could be exposed to vibration that may cause adverse comment.
The above assessment is based on vibration-generating equipment being operating at the closest location to nearby receivers. When vibration-generating equipment operates further from the closest point or on upper floors of 9-19 Elizabeth Street, the predicted vibration levels will reduce along with the probability of adverse comment. Attended vibration measurements are proposed to be carried out proactively and in response to vibration complaints. Proposed monitoring locations at the affected receivers are provide in Section 7.3.3.
If vibration intensive equipment and plant are measured to be above vibration objectives for human annoyance at these locations, vibration control and management measures should be provided to reduce vibration impact (see Section 7.3.1).
After applying all feasible and reasonable vibration mitigation measures, if vibration monitoring still identifies that measured vibration levels be above the relevant vibration criteria for human annoyance, appropriate additional mitigation measures should be considered (see Section 7.3.2).
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7.3 Vibration mitigation measures
7.3.1 Vibration control and management measures
Vibration control measures are presented in the CNVMP and site-specific measures for mitigating vibration are detailed in Table C2 (APPENDIX C). In addition, the following vibration management measures are provided to minimise vibration impact from construction activities to the nearest affected receivers and to meet the relevant human comfort vibration and structural damage limits identified in Section 5.2.
Table 7.4: Site vibration control measures.
Control type Control measure Typical use
Construction Building condition Undertake building dilapidation surveys on all buildings located within the Planning surveys buffer zones established for cosmetic damage prior to commencement of activities with the potential to cause property damage (see Section 7.1).
Community consultation Implement community consultation measures – inform community of construction activity & potential impacts
Equipment selection/ Use less vibration emitting construction methods where feasible & construction method reasonable, for example vibratory rollers can, where practicable, be operated with the vibratory mode switched off to reduce vibration impact.
Plan work activities to Plan traffic flow, parking & loading/unloading areas to maximise distances minimise vibration. between truck routes and sensitive receivers.
Complaints Construction Complaints Complaints will be managed in accordance with the Construction Complaints Management Management System Management System (see Section 7.3.4). Each complaint shall be investigated and where vibration levels are established as exceeding the set limits, appropriate amelioration measures shall be put in place to mitigate future occurrences. Management measures may include modification of construction methods such as using smaller equipment and establishment of safe buffer zones as mentioned above.
7.3.2 Additional vibration mitigation measures
After applying all feasible and reasonable mitigation measures identified in Table 7.4, if vibration monitoring at representative locations are still above relevant vibration objectives for human annoyance, the appropriate additional vibration mitigations measures, as outlined in Section 8.2 of the CNVMP.
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Table 7.5: Additional vibration mitigation measures
LB = Letter box drops SN = Specific notifications RO = Project specific respite offer V = Verification monitoring IB = individual briefing AA = Alternative accommodation
7.3.3 Attended and real time vibration monitoring
Attended vibration monitoring is to be undertaken at 50 Martin Place at the commencement of vibration-generating works to determine and verify site specific minimum working distances for cosmetic damage and human annoyance. This monitoring is likely to be required at various stages of the works as the demolitions works progress towards the lower floors.
Additional attended monitoring may also be required in response to vibration-related complaints or as requested by the AA / Sydney Metro. Vibration monitoring is subject to obtaining the property owner/occupier’s consent to access the property (where required).
Real-time vibration monitoring in accordance with PPA Condition C11 is proposed for this site as noted in the CNVMP and will commence prior to the start of the demolition works. Real-time monitoring will be performed at an appropriate location within the 50 Martin Place building due to its close proximity to the works.
7.3.4 Complaints handling
Vibration complaints received and responded to will be managed in accordance with the CNVMP.
Transport for NSW operate a 24-hour construction complaints line (1800 171 386). Enquiries/ complaints may also be received through the Sydney Metro project email ([email protected]).
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8 Ground-borne noise assessment
The building at 50 Martin Place is constructed immediately adjacent to 9-19 Elizabeth Street. Where possible, all structural connections between the two properties will be removed to prevent the transmission of vibration and structure-borne noise into the rooms of the adjacent building. Current information suggests that there is a separation between the boundary walls of about 100mm. On this basis, it is anticipated that there won’t be contact between the buildings and that the structure-borne noise transfer will be minimal.
For attenuation of vibration levels within multistorey buildings a value of 1-3 dB per floor is generally used [12]. Due to this floor-to-floor attenuation, demolition of the lower levels is considered to be the greatest risk of annoyance due to structure-borne noise.
Predicted worst-case ground-borne noise levels for 50 Martin Place and Channel 7 recording studio at 52-56 Martin Place are provided in Table 8.1. Hammering at further distances will result in lower noise levels.
Table 8.1: Maximum predicted ground-borne noise levels.
Minimum Slant Ground-borne Noise Pulse Acoustic E37/E38 noise Receiver Equipment Distance (m) Level [dB(A)]1 noise goal [dB(A)] criteria [dB(A)] (see [10])
Channel 7 45T excavator 53 47 45 60 recording studio with hammer
50 Martin Place 45T excavator <5m >70 n/a 60 with hammer
1. Predicted noise levels include a 5 dB GBN penalty, refer to Section 5.1.1
Whilst the maximum ground-borne noise levels are predicted to be below the PPA Conditions E37/E38 internal NML of 60 dB(A) within the Channel 7 studios, the maximum noise level of 47 dB(A) is 2 dB(A) above the internal design objective of 45 dB(A) recommended in the Pulse Acoustic report and may therefore cause disturbance during recording sessions.
On this basis, it is likely that consultation will be required with Channel 7 to schedule high noise impact works outside of sensitive recording periods if rock hammering is required on the lower floors of 9-19 Elizabeth Street. Attended measurements within the Channel 7 recording studio are recommended at various stages of the demolition to confirm the noise level-distance relationship and when respite from high noise impact works may be required as per Revised Environmental Management Measure NV4 detailed in the CNVMP [1].
During hammering activities on the lower floors of the 9-19 Elizabeth building, GBN inside 50 Martin Place are predicted to be above the internal NMLs of 60 dB(A). Consultation will be required to determine appropriate respite periods to minimise impacts at this locality in accordance with PPA Conditions E37/E38. It is understood that the building occupants (Macquarie Bank) are supportive of undertaking additional OOHW or Saturdays to minimise potential impacts on building occupants.
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As noted in Section 6.3.4, attended and real-time noise monitoring is proposed to be undertaken within 50 Martin Place. This monitoring will also capture ground-borne borne noise levels associated with the demolition works as per the Revised Environmental Management Measure NV4 detailed in the CNVMP [1]. The attended measurements will be used to determine the relative contribution of airborne construction noise, ground-borne construction noise and internal office noise and / or whether real- time noise monitor(s) are required to be located at alternative locations in the buildings to accurately capture construction noise levels.
Attended ground-borne noise monitoring at other locations may also be required in response to noise- related complaints or as requested by the AA / Sydney Metro. Noise monitoring is subject to obtaining the property owner/occupier’s consent to access the property (where required).
Internal noise levels will be assessed and managed in accordance with PPA Conditions E37 and E38, as detailed in Section 5.1.1.
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9 Traffic noise assessment
When construction related traffic moves on the public road network, a different noise assessment methodology is appropriate as vehicle movements would be regarded as additional road traffic on public roads rather than as part of the construction site's activities.
Based on the proposed activities, operations and time of day, construction traffic noise is not likely to be significant.
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10 Cumulative impacts
In the vicinity of the demolition works at 9-19 Elizabeth Street, other nearby construction works including demolition activities at 39 Martin Place and the Martin Place Shopping Circle, and building construction works at 60 Martin Place are scheduled to occur during the same timeframe.
Cumulative noise levels at receivers in between these sites may be at times be 2 to 3 dB(A) higher than the highest predicted noise levels from demolition activities of each site. However, these occurrences would be rare given the typical worst-case assessment process. In many cases, nearby sensitive receivers will be located closer to one of the above sites than the others. A potential noise increase of 2 to 3 dB(A) is not considered to be significant for work activities undertaken during standard construction hours.
PPA Condition E39 requires the Proponent to consult with proponents of other construction works in the vicinity of the works and take reasonable steps to coordinate works to minimise cumulative impacts of noise and vibration and maximise respite for affected sensitive receivers. At this site, it is possible that sensitive receives in between 39 Martin Place / Shopping Circle and 9-19 Elizabeth Street or in between 60 Martin Place and 9-19 Elizabeth Street may be impacted by internal noise levels above the PPA Condition E37/E38 requirements. In this case, consultation between the proponents of the Sydney Metro sites will be required to ensure that internal noise levels in PPA Condition E38 are adhered to. It is not currently known if there are any similar internal noise requirements for the building construction works at 60 Martin Place.
Other unrelated construction activities may occur within the vicinity of Sydney Metro works. Due to the nature of the demolition works covered by this CNVIS, it is not feasible or reasonable to alter the timing of the work in consultation with other worksites.
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11 Conclusion
In conclusion, construction works associated with the demolition works at the 9-19 Elizabeth Street site have been identified and described in this report. The potentially affected noise sensitive receivers and relevant construction noise objectives have been identified and discussed to allow the assessment of potential construction noise and vibration impacts.
The expected construction noise levels have been predicted and presented in Section 6.2 and APPENDIX D. The expected duration of construction activities is outlined in Table C1 of APPENDIX C.
The highest noise impacts are predicted to occur during structural demolition using excavators with rock hammer attachments. The preferred demolition method to be used is using a combination of mainly pulverising, however sometimes hydraulic hammering where pulveriser access is limited. The potential noise and vibration impacts associated with demolition using pulverisers is significantly reduced.
During demolition with pulverisers noise levels are predicted to comply with the PPA Condition E37/E38 NMLs at all residential and other sensitive receivers. Where demolition with rock hammers is necessary, the noise and vibration impacts at nearby sensitive receivers will be managed as detailed in Table C2 and APPENDIX E.
No construction works are proposed to be undertaken during night time periods. Sleep disturbance at the nearest residential receivers are therefore not applicable.
Noise mitigation and management measures have been presented in Section 6.3 to aid in providing additional noise reduction benefits where noise levels are predicted to be above the objectives. Real time noise and vibration monitoring is proposed to be undertaken at 50 Martin Place during the demolition works to monitor compliance with the noise and vibration management levels in PPA Conditions E37/E38 and E28.1.
Minimal construction vehicles are proposed as part of the works, and so construction traffic noise on the local road network associated with demolition is predicted to have minimal impact on receivers in proximity to public roads.
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References
[1] MARTIN PLACE METRO CSSI – Construction Noise and Vibration Management Plan (TK422-03 (r1) Martin Place CSSI CNVMP)
[2] Sydney Metro City & Southwest – Out of Hours Work Protocol (SM ES-PW-317)
[3] SLR Consulting Australia Pty Ltd 2016 Sydney Metro Chatswood to Sydenham - Technical Paper 2: Noise and Vibration Report Number 610.14718R1 – 28 April 2016
[4] Department of Environment and Climate Change 2009 NSW Interim Construction Noise Guideline (ICNG),
[5] Department of Environment Conservation NSW 2006 Assessing Vibration; a technical guideline
[6] British Standard 7385 Part 2 1993, Evaluation and measurement for vibration in buildings. Guide to damage levels from groundborne vibration
[7] British Standard BS 6472-2008, Evaluation of human exposure to vibration in buildings (1-80Hz)
[8] Transport for NSW Sydney Metro City & Southwest Construction Noise Strategy (ref: 610.14213-R3) 08 August 2016 including CNVS Addendum A (Rev 2, submitted on 19 June 2017)
[9] Transport for NSW Construction Noise Strategy (ref: 7TP-ST-157/2.0) April 2012
[10] Pulse Acoustic Consultancy Pty Ltd Sydney Metro — Demolition Construction Noise Sensitivity Assessment for Seven Network, dated 30 June 2017
[11] Macquarie Bank SSD application - Construction Noise and Vibration Impact Statement of Early Works 9-19 Elizabeth Street Demolition (TK422-01 01F01 (r2))
[12] Hassan O.A.B. 2006 – Train-Induced Groundborne Vibration and Noise in Buildings
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APPENDIX A Glossary of terminology
The following is a brief description of the technical terms used to describe noise to assist in understanding the technical issues presented.
Adverse weather Weather effects that enhance noise (that is, wind and temperature inversions) that occur at a site for a significant period of time (that is, wind occurring more than 30% of the time in any assessment period in any season and/or temperature inversions occurring more than 30% of the nights in winter).
Ambient noise The all-encompassing noise associated within a given environment at a given time, usually composed of sound from all sources near and far.
Assessment period The period in a day over which assessments are made.
Assessment point A point at which noise measurements are taken or estimated. A point at which noise measurements are taken or estimated.
Background noise Background noise is the term used to describe the underlying level of noise present in the ambient noise, measured in the absence of the noise under investigation, when extraneous noise is removed. It is described as the average of the minimum noise levels measured on a sound level meter and is measured statistically as the A-weighted noise level exceeded for ninety percent of a sample period. This is represented as the L90 noise level (see below).
Decibel [dB] The units that sound is measured in. The following are examples of the decibel readings of every day sounds: 0dB The faintest sound we can hear 30dB A quiet library or in a quiet location in the country 45dB Typical office space. Ambience in the city at night 60dB CBD mall at lunch time 70dB The sound of a car passing on the street 80dB Loud music played at home 90dB The sound of a truck passing on the street 100dB The sound of a rock band 115dB Limit of sound permitted in industry 120dB Deafening dB(A) A-weighted decibels. The A- weighting noise filter simulates the response of the human ear at relatively low levels, where the ear is not as effective in hearing low frequency sounds as it is in hearing high frequency sounds. That is, low frequency sounds of the same dB level are not heard as loud as high frequency sounds. The sound level meter replicates the human response of the ear by using an electronic filter which is called the “A” filter. A sound level measured with this filter switched on is denoted as dB(A). Practically all noise is measured using the A filter. dB(C) C-weighted decibels. The C-weighting noise filter simulates the response of the human ear at relatively high levels, where the human ear is nearly equally effective at hearing from mid-low frequency (63Hz) to mid-high frequency (4kHz), but is less effective outside these frequencies.
Frequency Frequency is synonymous to pitch. Sounds have a pitch which is peculiar to the nature of the sound generator. For example, the sound of a tiny bell has a high pitch and the sound of a bass drum has a low pitch. Frequency or pitch can be measured on a scale in units of Hertz or Hz.
Impulsive noise Having a high peak of short duration or a sequence of such peaks. A sequence of impulses in rapid succession is termed repetitive impulsive noise.
Intermittent noise The level suddenly drops to that of the background noise several times during the period of observation. The time during which the noise remains at levels different from that of the ambient is one second or more.
LMax The maximum sound pressure level measured over a given period.
LMin The minimum sound pressure level measured over a given period.
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L1 The sound pressure level that is exceeded for 1% of the time for which the given sound is measured.
L10 The sound pressure level that is exceeded for 10% of the time for which the given sound is measured.
L90 The level of noise exceeded for 90% of the time. The bottom 10% of the sample is the L90 noise level expressed in units of dB(A).
Leq The “equivalent noise level” is the summation of noise events and integrated over a selected period of time.
Reflection Sound wave changed in direction of propagation due to a solid object obscuring its path.
SEL Sound Exposure Level (SEL) is the constant sound level which, if maintained for a period of 1 second would have the same acoustic energy as the measured noise event. SEL noise measurements are useful as they can be converted to obtain Leq sound levels over any period of time and can be used for predicting noise at various locations.
Sound A fluctuation of air pressure which is propagated as a wave through air.
Sound absorption The ability of a material to absorb sound energy through its conversion into thermal energy.
Sound level meter An instrument consisting of a microphone, amplifier and indicating device, having a declared performance and designed to measure sound pressure levels.
Sound pressure level The level of noise, usually expressed in decibels, as measured by a standard sound level meter with a microphone.
Sound power level Ten times the logarithm to the base 10 of the ratio of the sound power of the source to the reference sound power.
Tonal noise Containing a prominent frequency and characterised by a definite pitch.
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APPENDIX B Nearest sensitive receivers and noise management levels
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Figure B1 – Land use, NCAs and nearby receiver locations
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Table B1: Noise Sensitive Receivers and Construction Noise Management Levels 9-19 ELIZABETH STREET DEMOLITION
Residential NMLs based on ICNG Residential External Noise Management Rating Background Levels (RBLs) (to guide notifications and feasible and reasonable mitigation Sleep Dist. L Levels (NMLs) L Amax measures) Aeq15min NCA Receiver Type Reference RBL Comments
Evening Shoulder Night Day/Evening Evening/Night (8pm Day Evening Night Day (S) Day (O) Screening Max (6pm-10pm) (10pm - 12am) (12am - 7am) (7am to 8pm) to 7am)
MP_01 Residential CBD EIS B.11 61 56 52 71 66 61 59 57 80 65 65 75 EIS B.11
MP_02 Residential CBD EIS B.11 61 56 52 71 66 61 59 57 80 65 65 75 EIS B.11
MP_03 Residential CBD EIS B.11 61 56 52 71 66 61 59 57 80 65 65 75 EIS B.11
MP_04 Residential CBD EIS B.11 61 56 52 71 66 61 59 57 80 65 65 75 EIS B.11
Other sensitive receivers OSR Childcare - - - 55 55 55 55 55 - - Only applies when in use. NML of 55dB()A is external equivalent of 40dB(A) internal goal for with windows open, as outlined in CNVMP with reference to ICNG, p13 9 CASTLEREAGH STREET SYDNEY Castlereagh Street Early Learning Centre 15 CASTLEREAGH STREET SYDNEY Explore and Develop OSR Hotel (Sleeping areas: Hotels near major roads) ICNG - - - 50 50 50 50 50 65 75 NML of 50dB(A) is external equivalent of 40dB(A) internal goal for with windows open, as outlined in CNVMP with reference to AS2107 27-39 CASTLEREAGH STREET SYDNEY CTA Business Club 165 PHILLIP STREET SYDNEY Travelodge Hotel 64-66 PITT STREET SYDNEY Radisson Blu OSR Recording Studio - - Only applies when in use. NML of 50dB()A is external equivalent of 25 dB(A) internal goal for with 25 dB façade loss, as outlined in CNVMP with reference to AS2107. 85 85 85 85 85 Channel 7 recording studio. NML for impulsive noise sources recommended in Pulse Acoustic report "2017-06-15 52-56 MARTIN PLACE SYDNEY Demotion – Construction Impact for Channel Seven" Other sensitive receivers OSR Recording studio ICNG - - - 25 (internal) 60 (internal) - - OSR Childcare ICNG - - - 45 (internal) 60 (internal) - - OSR Place of worship ICNG - - - 45 (internal) 60 (internal) - - OSR Hotel ICNG - - - 40 (internal) 60 (internal) 65 75 OSR Commercial ICNG - - - 70 (external) 60 (internal) - - OSR Industrial ICNG 75 (external) 60 (internal) - -
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APPENDIX C Construction timetable/ activities/ management
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Table C1: Construction Timetable/ Activities/ Equipment 9-19 ELIZABETH STREET DEMOLITION
Sound Power Level (Lw re: 1pW) in Duration/Commencement Day Evening Night Notes Activity/ Work Area Aspect Plant/ Equipment Net Power kW Operating Weight kg Noise Model, dB(A)
7am - 6pm 6pm - 10pm 10pm - 7am LAeq LA1 Demolition Typical daily activities include power supply, deliveries; Power Generator 25 kVA 1 - - 94 Road truck (deliveries to site) 2 - - 108 Light vehicle 5 - - 89 Compressor 110 2660 1 - - 102 Hand tools 5 - - 104 Powered Hand Tools 5 - - 109 Vac Truck 1 - - 108 Telescopic forklift/forklift 55kW 1 - - 99 Water cart/ Street Sweeper 15000L (body truck) 1 - - 107 Franna Crane 205 20t 1 - - 99 106 Material Load out (including hazadous material) Excavator w bucket 20t-30t 1 - - 105 Bin Truck 3 loads/day - - 108 No bin trucks during demolition Delivery Truck - hooklift (skip bins) 12 loads/day - - 108 122 Bobcat 2 - - 109 Structural demolition Excavator w: pulverisor, shears, 5-45t 1 - - 108 Excavator w: hammer 5-45t 1 - - 123 + 5 pen Hand tools 2 - - 109 Bobcat 1 - - 109 Generator 10Kva 1 - - 94
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Table C2: Construction Noise and Vibration Management Schedule 9-19 ELIZABETH STREET DEMOLITION Mitigation/ Management Measure Comments 1 Construction hoardings Construction hoardings at least 2m high to be erected surrounding the worksite as early as possible.
2 Temporary screens Temporary noise screens (e.g. FlexShield, Echo-barrier or similar) will be installed on all scaffolding facing noise sensitive receivers. The screens should be positioned to block the entire facade on the floor where works are occuring, with no gaps. This will reduce the noise from the construction activities by up to 10 dB(A) when there is no direct line of sight between demolition plant and receivers.
3 Limit the use of high impact equipment The use hydraulic hammers and rock breakers to be limited to only when necessary. Concrete pulveriser attachements are to be used as the primary demolition method.
4 Respite periods for high impact noise Working hours are to be scheduled to provide periods of respite from high impact noise activites (hydraulic hammering and rock breaking) to neighbouring properties.
5 Demolition sequencing The structural demolition process will be sequenced in such a way that the building façades will remain in place for as long possible, to allow these structural elements to provide shielding between the demolition plant and neighbouring receivers. Where possible the demolition works will be scheduled to reduce the noise impact during periods of peak pedestrian traffic and neighbouring outdoor activities.
6 Remove structural connections to adjacent buildings Any structural connections between the buildings to be demolished and neighbouring properties will be removed as soon as possible to minimise the transmission of vibration and structure-borne noise to sensitive receivers. The removal of these structural elements will be undertaken with low impact plant where possible (such as pulverisers and saw cutting). These works are to be scheduled to reduce the impact on sensitive receivers and where necessary, respite periods shall be provided.
7 Verification monitoring - Noise Noise verification monitoring must be conducted to validate predictions in the nominated positions against the project requirements, as outlined in Section 5.3.3.
8 Verification monitoring - Vibration Noise verification monitoring must be conducted to validate predictions in the nominated positions against the project requirements, as outlined in Section 6.3.3.
9 Receiver notification/briefing - Noise A large range of receivers may be impacted by the works. Some properties close to the work areas will be exposed to high noise impacts during the demolition activities. All additional mitigation measures outlined in APPENDIX E should be applied.
10 Receiver notification/briefing - Vibration Plant and equipment have been identified to operate within the minimum buffer distances for human annoyance. Vibration may be perceivable at times. Notifications should be sent to receivers included in Section 6.2.2, and additional mitigation measures where applicable following monitoring.
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APPENDIX D Detailed predicted noise levels
The impacts presented in the following table are identified by colour coding of the text.
For Standard Hours:
XX Complies with NML
XX < 10dB(A) above NML - construction noise clearly audible
XX > 10dB(A) above NML - construction noise clearly moderately intrusive
XX > 75dB(A) - highly noise affected
For Day from 7am to 8pm
XX Noise levels predicted to be below internal NMLs in PPA E37/38 conditions
XX Noise levels predicted to be above internal NMLs in PPA E37/38 conditions
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Table D1: Predicted construction noise levels 9-19 ELIZABETH STREET DEMOLITION
Receiver Predicted noise levels, dB(A) Day (Standard) - ICNG Day (Standard) - E37/E38 NCA Address Receiver type Asumed façade loss NML S1_H S2_H S3_H S1_P S2_P S3_P NML S1_H S2_H S3_H S1_P S2_P MP_02 5 HOSKING PLACE SYDNEY Residential 20 71 74 71 71 59 57 57 80 74 71 71 59 57 OSR 1 ANGEL PLACE SYDNEY Theatre/Auditorium 20 50 41 41 41 28 28 28 80 41 41 41 28 28 OSR 21 BENT STREET SYDNEY Commercial 20 70 58 58 58 43 45 45 80 58 58 58 43 45 OSR 25 BENT STREET SYDNEY Commercial 20 70 62 64 64 48 51 51 80 62 64 64 48 51 OSR 1 BLIGH STREET SYDNEY Commercial 20 70 66 67 62 51 52 49 80 66 67 62 51 52 OSR 2 BLIGH STREET SYDNEY Hotel/Motel/Hostel 20 60 70 69 69 58 58 58 80 70 69 69 58 58 OSR 4-6 BLIGH STREET SYDNEY Commercial 20 70 71 71 70 56 56 55 80 71 71 70 56 56 OSR 29 BLIGH STREET SYDNEY Commercial 20 70 70 71 70 57 58 57 80 70 71 70 57 58 OSR 37 BLIGH STREET SYDNEY Commercial 20 70 51 54 57 44 45 46 80 51 54 57 44 45 OSR 41 BRIDGE STREET SYDNEY Commercial 20 70 61 62 62 49 49 49 80 61 62 62 49 49 OSR 1-7 CASTLEREAGH STREET SYDNEY Commercial 25 70 78 79 79 66 68 68 85 78 79 79 66 68 OSR 9 CASTLEREAGH STREET SYDNEY Childcare 35 80 67 69 78 60 66 67 85 67 69 78 60 66 OSR 9 CASTLEREAGH STREET SYDNEY Commercial 25 70 79 80 80 67 69 69 85 79 80 80 67 69 OSR 15 CASTLEREAGH STREET SYDNEY Childcare 30 75 65 72 81 52 63 66 85 65 72 81 52 63 OSR 15 CASTLEREAGH STREET SYDNEY Commercial 25 70 81 81 81 68 68 69 85 81 81 81 68 68 OSR 17 CASTLEREAGH STREET SYDNEY Commercial 20 70 70 71 71 55 57 59 80 70 71 71 55 57 OSR 27-39 CASTLEREAGH STREET SYDNEY Hotel/Motel/Hostel 20 60 49 49 49 37 37 37 80 49 49 49 37 37 OSR 41-45 CASTLEREAGH STREET SYDNEY Commercial 20 70 55 57 59 40 41 44 80 55 57 59 40 41 OSR 44-62 CASTLEREAGH STREET SYDNEY Commercial 20 70 70 60 60 54 44 45 80 70 60 60 54 44 OSR 2 CHIFLEY SQUARE SYDNEY Commercial 25 70 71 71 71 58 59 59 85 71 71 71 58 59 OSR 8-12 CHIFLEY SQUARE SYDNEY Commercial 25 70 80 79 79 67 69 68 85 80 79 79 67 69 OSR 60-70 ELIZABETH STREET SYDNEY Commercial 20 70 66 63 63 52 50 50 80 66 63 63 52 50 OSR 75-85 ELIZABETH STREET SYDNEY Commercial 20 70 60 51 52 45 36 37 80 60 51 52 45 36 OSR 82-88 ELIZABETH STREET SYDNEY Commercial 20 70 64 59 59 49 45 46 80 64 59 59 49 45 OSR 1 FARRER PLACE SYDNEY Commercial 20 70 65 66 63 50 51 50 80 65 66 63 50 51 OSR 44-48 HUNTER STREET SYDNEY Commercial 20 70 59 61 62 46 49 49 80 59 61 62 46 49 OSR 50-58 HUNTER STREET SYDNEY Commercial 20 70 67 67 68 60 60 60 80 67 67 68 60 60 OSR 66 HUNTER STREET SYDNEY Commercial 20 70 75 77 77 65 66 66 80 75 77 77 65 66 OSR 68-96 HUNTER STREET SYDNEY Commercial 25 70 76 76 76 64 65 65 85 76 76 76 64 65 OSR 148-160 KING STREET SYDNEY Commercial 20 70 60 56 55 45 41 41 80 60 56 55 45 41 OSR 173 KING STREET SYDNEY Place of Worship 20 55 40 39 39 28 27 27 80 40 39 39 28 27 OSR 167 MACQUARIE STREET SYDNEY Commercial 20 70 58 58 58 47 47 47 80 58 58 58 47 47 OSR 183 MACQUARIE STREET SYDNEY Medical 20 55 46 46 46 34 34 34 80 46 46 46 34 34 OSR 187-191 MACQUARIE STREET SYDNEY Medical 20 55 45 45 45 32 33 33 80 45 45 45 32 33 OSR 193 MACQUARIE STREET SYDNEY Medical 20 55 45 45 45 32 33 33 80 45 45 45 32 33 OSR 195 MACQUARIE STREET SYDNEY Medical 20 55 45 45 45 33 33 33 80 45 45 45 33 33 OSR 197 MACQUARIE STREET SYDNEY Place of Worship 20 55 46 47 47 34 34 34 80 46 47 47 34 34 OSR 229-231 MACQUARIE STREET SYDNEY Medical 20 55 40 40 40 28 28 28 80 40 40 40 28 28 OSR 237-241 MACQUARIE STREET SYDNEY Commercial 20 70 65 61 59 50 45 44 80 65 61 59 50 45 OSR 5 MARTIN PLACE SYDNEY Commercial 20 70 67 55 51 52 40 38 80 67 55 51 52 40 OSR 18-30A MARTIN PLACE SYDNEY Commercial 20 70 71 64 52 56 49 40 80 71 64 52 56 49 OSR 19 MARTIN PLACE SYDNEY Commercial 25 70 68 60 58 52 45 45 85 68 60 58 52 45
LANDLEASE GROUP MARTIN PLACE METRO STATION TK422 05.03 9-19 Elizabeth Street App D_E (r2).xlsm CONSTRUCTION NOISE AND VIBRATION IMPACT STATEMENT: 9-19 ELIZABETH STREET DEMOLITION RENZO TONIN & ASSOCIATES 3/10/2018
Table D1: Predicted construction noise levels 9-19 ELIZABETH STREET DEMOLITION
Receiver Predicted noise levels, dB(A) Day (Standard) - ICNG Day (Standard) - E37/E38 NCA Address Receiver type Asumed façade loss NML S1_H S2_H S3_H S1_P S2_P S3_P NML S1_H S2_H S3_H S1_P S2_P OSR 38-46 MARTIN PLACE SYDNEY Commercial 20 70 53 59 58 43 47 48 80 53 59 58 43 47 OSR 50 MARTIN PLACE SYDNEY Commercial 20 70 77 77 77 62 62 62 80 77 77 77 62 62 OSR 52-56 MARTIN PLACE SYDNEY Recording studio 42 (see Note 1) 85 66 72 72 52 57 57 85 66 72 72 52 57 OSR 52-56 MARTIN PLACE SYDNEY Commercial 25 70 82 82 82 67 67 67 85 82 82 82 67 67 OSR 53-63 MARTIN PLACE SYDNEY Commercial 20 70 69 68 66 54 53 52 80 69 68 66 54 53 OSR 58-60 MARTIN PLACE SYDNEY Commercial 20 70 62 61 60 47 46 46 80 62 61 60 47 46 OSR 65 MARTIN PLACE SYDNEY Commercial 20 70 65 57 57 50 42 42 80 65 57 57 50 42 OSR 1-15 O'CONNELL STREET SYDNEY Educational 25 55 45 46 46 34 35 35 85 45 46 46 34 35 OSR 6-10 O'CONNELL STREET SYDNEY Commercial 20 70 69 69 69 56 57 56 80 69 69 69 56 57 OSR 16 O'CONNELL STREET SYDNEY Commercial 20 70 58 56 58 44 48 48 80 58 56 58 44 48 OSR 19-21 O'CONNELL STREET SYDNEY Commercial 20 70 59 62 63 47 51 52 80 59 62 63 47 51 OSR 23-25 O'CONNELL STREET SYDNEY Commercial 20 70 60 62 62 49 50 50 80 60 62 62 49 50 OSR 28-34 O'CONNELL STREET SYDNEY Childcare 25 55 57 61 61 44 48 48 85 57 61 61 44 48 OSR 52-54 PHILLIP STREET SYDNEY Commercial 20 70 55 57 58 41 43 44 80 55 57 58 41 43 OSR 88 PHILLIP STREET SYDNEY Commercial 20 70 66 66 66 54 55 55 80 66 66 66 54 55 OSR 126 PHILLIP STREET SYDNEY Commercial 20 70 76 76 75 61 62 62 80 76 76 75 61 62 OSR 165 PHILLIP STREET SYDNEY Hotel/Motel/Hostel 20 60 62 60 60 47 48 48 80 62 60 60 47 48 OSR 169-171 PHILLIP STREET SYDNEY Commercial 20 70 65 58 54 50 44 41 80 65 58 54 50 44 OSR 170-172 PHILLIP STREET SYDNEY Commercial 20 70 65 61 48 50 46 35 80 65 61 48 50 46 OSR 174-176 PHILLIP STREET SYDNEY Commercial 20 70 65 58 47 50 43 35 80 65 58 47 50 43 OSR 178-180 PHILLIP STREET SYDNEY Commercial 20 70 64 52 48 48 38 34 80 64 52 48 48 38 OSR 64-66 PITT STREET SYDNEY Hotel/Motel/Hostel 25 60 59 62 62 48 49 50 85 59 62 62 48 49 OSR 68 PITT STREET SYDNEY Commercial 20 70 60 59 60 53 53 54 80 60 59 60 53 53 OSR 124-136 PITT STREET SYDNEY Commercial 20 70 61 47 45 46 33 33 80 61 47 45 46 33 OSR 1 SHAKESPEARE PLACE SYDNEY Educational 20 55 41 42 42 31 32 32 80 41 42 42 31 32 OSR 5030 SHAKESPEARE PLACE SYDNEY Educational 20 55 41 39 38 28 27 27 80 41 39 38 28 27 OSR 10-14 SPRING STREET SYDNEY Commercial 20 70 66 66 65 53 53 52 80 66 66 65 53 53 OSR 182-182A CUMBERLAND STREET THE ROCKS Educational 20 55 41 32 29 27 20 19 80 41 32 29 27 20 OSR 157-169 GLOUCESTER STREET THE ROCKS Educational 20 55 41 32 30 27 20 19 80 41 32 30 27 20 OSR 20-22 GROSVENOR STREET THE ROCKS Place of Worship 20 55 43 35 33 29 24 23 80 43 35 33 29 24 OSR 32 MARTIN PLACE SYDNEY Commercial 20 70 68 54 54 53 43 43 80 68 54 54 53 43 OSR 144-146 PHILLIP STREET, SYDNEY Commercial 25 70 73 82 83 61 71 71 85 73 82 83 61 71 Note: 1. See Pulse Acoustic report [10] for Channel 7 studio recording studio
LANDLEASE GROUP MARTIN PLACE METRO STATION TK422 05.03 9-19 Elizabeth Street App D_E (r2).xlsm CONSTRUCTION NOISE AND VIBRATION IMPACT STATEMENT: 9-19 ELIZABETH STREET DEMOLITION RENZO TONIN & ASSOCIATES 7 MARCH 2019
APPENDIX E Additional noise mitigation
The following table identifies the additional mitigation measures to be applied at construction noise affected receivers.
LB = Letter box drops SN = Specific notifications RO = Project specific respite offer V = Verification monitoring IB = individual briefing AA = Alternative accommodation
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Table E1: Additional noise mitigation and receiver notifications
Receiver Additional noise mitigation and receiver notifications Day (Standard) - ICNG NCA Address Receiver type S1_H S2_H S3_H S1_P S2_P S3_P OSR 15 CASTLEREAGH STREET SYDNEY Commercial MM2 MM2 MM2 OSR 52-56 MARTIN PLACE SYDNEY Commercial MM2 MM2 MM2 OSR 144-146 PHILLIP STREET, SYDNEY Commercial MM2 MM2
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APPENDIX F Dates of completed meetings with affected receivers and the consultation presentation
Completed stakeholder meeting overview: Sydney Metro Martin Place ISD
Date Meeting Purpose
28-Sep-18 Channel 7 Sensitive receiver
09-Nov-18 Explore and Develop Childcare Sensitive receiver
09-Nov-18 CTA Sensitive receiver
12-Nov-18 Cheeky Monkey childcare Sensitive receiver
28-Sep-18 Travelodge Sensitive receiver
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APPENDIX G Additional micro-piling works
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Acoustics Vibration Structural Dynamics
7 March 2019 TK422-06F02 Demolition CNVIS - Additional variants (r2).docx
Lendlease Jason Ambler [email protected]
From: Minh Nguyen [[email protected]]
Martin Place Station - Demolition CNVIS - Additional Micro-Piling Works
1 Introduction
1.1 Overview of works
This technical memorandum is an addendum to the report Construction Noise and Vibration Impact Statement for Demolition of 9-19 Elizabeth Street reference: TK422-F04 (r8) 9-19 Elizabeth Street Demolition CNVIS, dated 26 November 2018 (Demolition CNVIS).
Lendlease has proposed to undertake micro-piling works at 8-12 Castlereagh Street and 7 Elizabeth Street as part of Martin Place Integrated Station Development (MP-ISD) Demolition works. These works were not included in the original scope of work for this project. Works associated with micro-piling, anchoring and removing the existing wall at 8-12 Castlereagh Street and 7 Elizabeth Street are proposed to be undertaken during work hours consistent with the current approval for the Demolition CNVIS.
The micro-piling and wall removal works will involve the following equipment:
• 8T - 14T drill rigs (i.e. Soilmec PSM980 or Hutte HBR 504 FTW)
• 8T - 17T piling rigs (i.e. Hutte 205 or Hutte 203)
• A small excavator with rock hammering attachment
• Delivery trucks
• Hand tools (rattle guns, drills, etc.)
• Light vehicles
Sydney Melbourne Brisbane Gold Coast Kuwait Renzo Tonin & Associates ABN 29 117 462 861 Level 1/418A Elizabeth St SURRY HILLS NSW 2010 | PO Box 877 STRAWBERRY HILLS NSW 2012 P (02) 8218 0500 F (02) 8218 0501 [email protected] www.renzotonin.com.au RENZO TONIN & ASSOCIATES 7 MARCH 2019
1.2 Potential OOHW
Out of hours works (OOHW) are not currently proposed for the additional demolition works. Should OOHW be required (e.g. for the delivery of oversize plant or if consultation with affected receivers results in a preference to undertake some works on Saturday and Sunday when less people are about in the CBD), additional assessment will be required in consultation with the AA on a case-by-case basis in accordance with the Sydney Metro Out of Hours Works Protocol (Reference Document: SM ES-PW-317) or PPA Condition E47.
2 Construction noise assessment
2.1 Construction activities
Table 2.1 presents a summary of the typical construction equipment involved in the proposed works. The proposed equipment represents a reasonable worst case set of equipment operating concurrently.
Table 2.1: Construction activities, reasonable worst case set of operating equipment, and applicable activity assessment sound power levels
Construction scenarios (24 hours)
Works Key plant and equipment Crane erection works
Qty Activity sound power level, dB(A)
Micro-pilings at 8- 8T - 14T drill rigs (i.e. Soilmec PSM980 or Hutte HBR 1 1251 12 Castlereagh 504 FTW) Street and 7 8T - 17T piling rigs (i.e. Hutte 205 or Hutte 203) - Elizabeth Street Light vehicle 1 Deliveries trucks 1 Hand tools 2 Wall removal at 8- Excavator with rock hammering attachment (Up to 1 1281 12 Castlereagh 20T) Street and 7 Elizabeth Street Light vehicle 1 Deliveries trucks 1 Hand tools 2 Note: 1. Activity sound power level includes a 5dB(A) penalty for high noise activities.
The proposed works areas at 8-12 Castlereagh Street and 7 Elizabeth Street are shown in Figure 1.
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Figure 1 Proposed work areas at 8-12 Castlereagh Street (top) and 7 Elizabeth Street (bottom)
The top of the retaining walls being removed are at street level. The rigs will be below these levels by a minimum of 2 metres. Furthermore, a standard 1.8 m high (minimum) site hoarding is constructed around the Martin Place North site boundaries. The predicted noise levels associated with micro-piling works, wall removal works and approved Demolition CNVIS works are presented separately, as outlined in Table 2.2.
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Table 2.2: Noise level summary for potentially impacted sensitive receivers
Predicted external LAeq noise level, dB(A) Assumed external Equivalent external Approved Wall removal Receiver to internal noise NML Conditions Micro-piling 1 demolition at 7 Elizabeth reduction, dB(A) E37/E38/E41, dB(A) works works3 Street
1-5 Hosking Place (Residential) 20 80 (7am-9pm) 74 68 71 65 (9pm-7am)
50 Martin Place (Commercial) 20 80 77 74 77
144-146 Phillip Street (Channel 422 recording 80 72 63 66 7 – Recording studios) studios 20 offices
8-12 Chifley Square 20 80 80 76 78 (Commercial)
9 Castlereagh Street (Childcare) 35 95 81 73 77
15-17 Castlereagh Street 30 90 81 75 79 (Childcare)
Note: 1. 20 dB(A) minimum (conservative) difference between external and internal noise levels has been assumed (windows closed). Where additional information is available (e.g. if residential or non-residential properties have been acoustically treated), alternative outdoor to indoor noise difference will be determined to establish the equivalent external noise threshold 2. Pulse Acoustic Consultancy Pty Ltd, Sydney Metro — Demolition Construction Noise Sensitivity Assessment for Seven Network, dated 30 June 2017 3. Extracted from the Demolition CNVIS
During the proposed micro-piling works and wall removal works, noise levels are predicted to comply with the PPA Condition E37 and E38 NMLs at the nearest sensitive receivers. Potential noise impacts from the additional works proposed in this addendum are consistent with or reduced compared with the currently approved works in the existing Demolition CNVIS.
External noise levels at 50 Martin Place are predicted to be up to 77 dB(A). Based on a 20 dB(A) minimum (conservative) difference between external and internal noise levels, internal noise levels are predicted to be 57 dB(A) and below the internal NML of 60 dB(A) in PPA Condition E37/E38.
The noise levels outside the Channel 7 recording studio are predicted to be below the external noise level of 85 dB(A) at 2 m from the façade as recommended in the Pulse Acoustic report and comply with the internal NMLs per PPA Conditions E37/E38. Based on the predicted noise levels, the potential impact at Channel 7 is minimal and thus consultation is unlikely to be required for airborne noise associated with micro-piling and wall removal works.
2.2 Noise mitigation and management
2.2.1 Noise mitigation measures
All recommendations, mitigation and management measures for each of the corresponding assessments presented in the Martin Place Demolition CNVIS are required to be adopted for the micro- piling and wall removal works.
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As outlined in the CNVIS, noise monitoring will be undertaken on a regular basis to verify compliance with the predicted noise levels. Noise control and management measures in Section 6.3 of the Demolition CNVIS will be used. Workers will also have toolbox talks on the need to be aware of location of nearby residents and minimising unnecessary noise when undertaking the works.
2.2.2 Consultation with affected receivers (PPA Condition E33)
As outlined in Section 6.3.1 of the Demolition CNVIS, consistent with requirements in PPA Conditions E37 and E38, Lendlease has commenced and will continue to consult with potentially affected stakeholders including business and residential receivers regarding specific mitigation measures applicable to the construction works at the Martin Place Station site. Consultation is undertaken to understand stakeholders’ noise and vibration expectations and preferences for timing of high impact noise respite.
2.3 Construction vibration and ground-borne noise assessment
From the plant and equipment listed in Table 2.1, the dominant vibration and ground-borne noise generating plant and equipment include:
• Piling rigs (up to 17 tonnes)
• Drilling rigs (up to 14 tonnes)
• Excavator with hammer (up to 20 tonnes)
Potential vibration and ground-borne noise generated to receivers is dependent on separation distances, the intervening soil and rock strata, dominant frequencies of vibration, and the receiver structure.
For the proposed micro-piling works, potential vibration and ground-borne noise levels from bored piling and rock drilling are significantly less than rock hammering which was part of the approved Demolition CNVIS works.
For wall removal works, rock hammering is proposed to be undertaken at an increased separation distance (7 Elizabeth Street) or at the same separation distance (8-12 Castlereagh Street) from 50 Martin Place and Channel 7 recording studio compared to the approved CNVIS rock hammering works at 9-19 Elizabeth Street basement levels. The vibration and ground-borne noise impacts will be therefore reduced compared with the approved works. At all other nearby buildings, which are more than 20 m away from the proposed work area, vibration levels are predicted to be below the vibration goals in Section 5.2 of the CNVIS while ground-borne noise is expected to be much lower than airborne noise levels.
2.4 Other assessments
The following other assessments are covered in the Martin Place Demolition CNVIS:
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• Construction traffic noise;
• Cumulative noise and vibration impacts.
All recommendations, mitigation and management measures for each of the corresponding assessments presented in the Demolition CNVIS are required to be adopted for the demolition works during extended periods. This includes real time noise and vibration monitoring at 50 Martin Place.
There are no additional recommendations applicable for the works reviewed in this technical memorandum.
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3 Conclusion
This technical memorandum is an addendum to the report Construction Noise and Vibration Impact Statement for Demolition of 9-19 Elizabeth Street reference: TK422-F04 (r8) 9-19 Elizabeth Street Demolition CNVIS, dated 26 November 2018.
Lendlease has proposed to undertake micro-piling and wall removal works at 8-12 Castlereagh Street and 7 Elizabeth Street as part of MP-ISD Demolition works. These works were not included in the original scope of work for this project. Works associated with micro-piling, anchoring and removing the existing wall at 8-12 Castlereagh Street and 7 Elizabeth Street are proposed to be undertaken during standard hours including extended Saturday evening periods under the current approval for the Demolition CNVIS.
During proposed works, noise levels are predicted to comply with the PPA Condition E37 and E38 NMLs at the nearest sensitive receivers between 7am and 8pm. Potential noise impacts from additional works proposed in this addendum are consistent or reduced compared with the currently approved works in the existing Demolition CNVIS.
Noise control and management measures in Section 6.3 of the Demolition CNVIS will be used. Noise monitoring will be undertaken at the nearest sensitive receivers on a regular basis to verify compliance with the predicted noise levels and NMLs.
For the proposed works, potential vibration and ground-borne noise levels will be lower than those associated with the approved Demolition CNVIS works.
The consultation process in accordance with PPA Condition E37 and E38 is already underway at the Martin Place Station Site and will sufficiently cover the proposed construction works.
Regards,
Minh Nguyen
Graduate Engineer RENZO TONIN & ASSOCIATES
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Document control
Non-issued Issued Date Revision history Prepared Instructed Authorised revision revision
07.03.2019 Final 0 1 M. Nguyen C. Weber C. Weber
07.03.2019 Minor update based on LL - 2 M. Nguyen C. Weber C. Weber comments
Important Disclaimer: The work presented in this document was carried out in accordance with the Renzo Tonin & Associates Quality Assurance System, which is based on Australian Standard / NZS ISO 9001. This document is issued subject to review and authorisation by the Team Leader noted by the initials printed in the last column above. If no initials appear, this document shall be considered as preliminary or draft only and no reliance shall be placed upon it other than for information to be verified later. This document is prepared for the particular requirements of our Client which are based on a specific brief with limitations as agreed to with the Client. It is not intended for and should not be relied upon by a third party and no responsibility is undertaken to any third party without prior consent provided by Renzo Tonin & Associates. The information herein should not be reproduced, presented or reviewed except in full. Prior to passing on to a third party, the Client is to fully inform the third party of the specific brief and limitations associated with the commission. In preparing this report, we have relied upon, and presumed accurate, any information (or confirmation of the absence thereof) provided by the Client and/or from other sources. Except as otherwise stated in the report, we have not attempted to verify the accuracy or completeness of any such information. If the information is subsequently determined to be false, inaccurate or incomplete then it is possible that our observations and conclusions as expressed in this report may change. We have derived data in this report from information sourced from the Client (if any) and/or available in the public domain at the time or times outlined in this report. The passage of time, manifestation of latent conditions or impacts of future events may require further examination and re-evaluation of the data, findings, observations and conclusions expressed in this report. We have prepared this report in accordance with the usual care and thoroughness of the consulting profession, for the sole purpose described above and by reference to applicable standards, guidelines, procedures and practices at the date of issue of this report. For the reasons outlined above, however, no other warranty or guarantee, whether expressed or implied, is made as to the data, observations and findings expressed in this report, to the extent permitted by law. The information contained herein is for the purpose of acoustics only. No claims are made and no liability is accepted in respect of design and construction issues falling outside of the specialist field of acoustics engineering including and not limited to structural integrity, fire rating, architectural buildability and fit-for-purpose, waterproofing and the like. Supplementary professional advice should be sought in respect of these issues.
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