Auckland City Rail Link In association with:
CONSTRUCTION WORKS CONTRACT 1 CONSTRUCTION NOISE AND VIBRATION DELIVERY WORK PLAN Document ref: CRL-BTM-ENV-DOW-PLN-000284
Revision: 12 August 2017
Construction Noise and Vibration
Version history Rev.
Date
Version details
Prepared by
Reviewed by
1
November 2015
Draft for Auckland Transport review
C Fitzgerald (Marshall Day Acoustics)
P Roan, R Purdy
2
December 2015
Draft for CLG review
C Fitzgerald (Marshall Day Acoustics)
R Jenkins
3
January 2016
Draft for peer review
C Fitzgerald (Marshall Day Acoustics)
R Purdy
4
April 2016
Draft incorporating revised BTC designation conditions, Independent Peer Review and Auckland Council comments
C Fitzgerald (Marshall Day Acoustics)
P Roan
5
April 2016
Draft for consultation/CLG review
C Fitzgerald (Marshall Day Acoustics)
R Purdy, R Jenkins
6
May 2016
Draft incorporating CLG comments for Independent Peer Review
C Fitzgerald (Marshall Day Acoustics)
R Purdy
7
May 2016
Draft incorporating CLG and Independent Peer Review comments
C Fitzgerald (Marshall Day Acoustics)
J Urquhart, P Roan
8
June 2016
Final
C Fitzgerald (Marshall Day Acoustics)
J Urquhart, P Roan, R Jenkins
9
July 2016
Final incorporating Auckland Council comments
C Fitzgerald (Marshall Day Acoustics)
R Purdy, R Jenkins
10
May 2017
Updates to SSCNVMPs D2 and D3
C Fitzgerald (Marshall Day Acoustics)
S Sutherland
11
September 2017
Updates to Appendices A, B , D & E Annual plan review
C Fitzgerald (Marshall Day Acoustics)
S Sutherland
12
August 2018
Annual plan review
C Fitzgerald (Marshall Day Acoustics)
S Sutherland
Delivery Work Plan
August 2017
Distribution Date
Version
Issued to
Quantity & type
Approved for the DSBJV by
27 November 2015
Draft
Auckland Transport
1x Electronic
D Burtenshaw
21 December 2015
Draft
Community Liaison Group
1x Electronic
D Burtenshaw
29 January 2016
Draft
Independent Peer Review
1x Electronic
D Burtenshaw
8 April 2016
Draft
Auckland Transport
1x Electronic
D Burtenshaw
12 April 2016
Draft
Community Liaison Group
1x Electronic
D Burtenshaw
9 May 2016
Draft
Independent Peer Review
1x Electronic
D Burtenshaw
27 May 2016
Draft
Auckland Transport
1x Electronic
D Burtenshaw
2 June 2016
Final
Auckland Transport
1x Electronic 1 x Hard copy
D Burtenshaw
7 July 2016
Final
Auckland Transport, Auckland Council
1x Electronic
D Burtenshaw
23 May 2017
Final
Auckland Transport, Auckland Council
1x Electronic
D Burtenshaw
13 October 2017
Draft
CRLL
1x Electronic
D Burtenshaw
21 December 2017
Draft
Auckland Council
1x Electronic
D Burtenshaw
2 July 2018
Final
CRLL, Auckland Council
1x Electronic
D Burtenshaw
19 December 2018
Draft
CRLL, Auckland Council
1 x Electronic
D Burtenshaw
This document remains the property of DSBJV. Its contents are confidential and shall not be reproduced, destroyed or given away without express, written permission of DSBJV. The electronic version of this document in FULCRUM on designated serves(s) is the Master Copy and is a controlled document. Unless specifically noted, thereon, other copies of this document are uncontrolled. j:\crl c1\08 environment sustainability\0801 environmental management plans and delivery work plans\x annual management plan reviews\2018\tracked change - draft versions\crl-btm-env-dow-pln-000284 c1 cnv dwp rev 12a.docx
Delivery Work Plan
August 2017
Table of contents 1
2
3
4
5
6
7
8
9
Introduction 1.1 Purpose of the Construction Noise and Vibration DWP 1.2 Relevant Conditions 1.3 Sustainability 1.4 DWP Review and Updates Project Description 2.1 Overview 2.2 Construction Zones 2.3 Programme 2.4 Key Personnel Performance Standards 3.1 Noise 3.1.1 Designation Conditions 3.1.2 Site Specific Construction Noise Management Plans 3.2 Vibration 3.2.1 Designation Conditions – Building Damage 3.2.2 Designation Conditions – Amenity 3.2.3 Site Specific Construction Vibration Management Plans 3.3 Receiver and Building Types Predicted Construction Noise and Vibration Levels 4.1 Noise 4.2 Vibration Mitigation and Management 5.1 Training 5.2 Construction hours 5.3 Mechanical plant selection 5.4 General mitigation measures 5.5 Noise barriers and enclosures Communication 6.1 Communication Overview 6.2 Complaints response Monitoring 7.1 Real Time Web Monitoring 7.2 Attended Noise Monitoring 7.3 Attended Vibration Monitoring 7.4 Contingency measures 7.4.1 Noise 7.4.2 Vibration – Building Damage 7.4.3 Vibration – Amenity 7.5 Building condition surveys Affected Parties 8.1 Airborne Noise 8.1.1 Façade Sound Insulation Performance 8.1.2 Noise Effects 8.2 Reradiated Noise 8.3 Management of Significant Adverse Effects DWP Review and Updating (including SSCNMPs and SSCVMPs)
Delivery Work Plan
1 1 2 12 13 14 14 14 15 15 17 17 17 17 18 18 18 19 19 21 21 21 23 23 23 23 23 24 26 26 26 27 27 27 29 31 31 31 31 31 33 33 33 33 34 34 36
August 2017
10
9.1 Review Process 9.2 DWP Updates Management and Control of Documents
Appendix A :
ISCA Requirements
Appendix B :
Noise Level Predictions
Appendix C :
Vibration Level Predictions
Appendix D :
Site Specific Management Plans (SSCNMP, SSCVMP or SSCNVMP)
Appendix E :
Communication and Consultation Records
Appendix F :
CLG and Independent Peer Review Comments
Appendix G:
Register of Plan Updates
Delivery Work Plan
36 36 38
August 2017
1
Glossary of abbreviations Acronym
Definition
ACZ
Active Construction Zone
BPO
Best Practicable Options
BTC
Britomart Transport Centre
CEMP
Construction Environmental Management Plan
CLG
Community Liaison Group
CNV
Construction Noise and Vibration
CRL
City Rail Link
CRLL
City Rail Link Limited
CPO
Former Chief Post Office Building
dB
Decibel
DIN 4150-3:1999
German Standard DIN 4150-3:1999 “Structural Vibration – Part 3: Effects of vibration on structures”. This standard is generally adopted in NZ to assess building damage.
DWP
Delivery Work Plan
IS
Infrastructure Sustainability
ISCA
Infrastructure Sustainability Council of Australia
NZS 6801:2008
New Zealand Standard NZS 6801:2008 "Acoustics - Measurement of Sound"
NZS 6803:1999
New Zealand Standard NZS 6803:1999 “Acoustics – Construction Noise”.
SSCNMP
Site Specific Construction Noise Management Plan
SSCNVMP
Site Specific Construction Noise and Vibration Management Plan
SSCVMP
Site Specific Construction Vibration Management Plan
PPV
Peak Particle Velocity
VDV
Vibration Dose Values
Delivery Work Plan
August 2017
2
Glossary of terms Term
Definition
Ambient Noise
Ambient Noise is the all-encompassing noise associated with any given environment and is usually a composite of sounds from many sources near and far.
A-weighting
A frequency filter which is applied to a measurement of sound so as to more closely approximate the frequency bias of the human ear.
Decibel
The basic measurement unit of sound. It is a logarithmic ratio of measured sound pressure level with respect to a reference level of 20 micropascals.
LAeq(T)
The A-weighted, time averaged sound level (on a logarithmic/energy basis) over the measurement period T (e.g. between 10 and 60 minutes).
LAFmax
The maximum A-weighted sound level recorded during the measurement period. Measured with fast time weighting i.e. a 125 millisecond time constant
Noise
A sound that is unwanted by, or distracting to, the receiver.
Notable Noise and Vibration Receivers
Receivers that undertake activities within spaces that rely on a particularly low noise and vibration environment. For the purposes of the City Rail Link designations these spaces are defined as: • Public Performance Theatres; • Recording Studios, both sound and television; • In relation to sensitive equipment - Medical Facilities and Scientific Laboratories; • In relation to the requirement to record witness statements - The Auckland District Court in Albert Street
Peak Particle Velocity
Measured in mm/s. This is the standard metric for assessing construction vibration levels.
Sensitive Noise and Vibration Receivers
Receivers that may be disturbed during rest, concentration, communication or prayer. These include (but are not limited to): • Dwellings • Offices • Schools, including Child Care Centres and tertiary facilities • Libraries • Hospitals • Rest Homes • Marae and other Cultural Centres • Churches • Hotels or other accommodation facilities
Setback distance
The closest distance to a vibration source at which a measurement would be expected to comply with the risk assessment criteria
Delivery Work Plan
August 2017
1
Introduction
The City Rail Link (CRL) project comprises the construction, operation and maintenance of a 3.4 km underground passenger railway, running between Britomart Station and the North Auckland Rail Line in the vicinity of Mt Eden station. The Contract 1 (C1) works addressed in this Construction Noise and Vibration Delivery Work Plan (CNV DWP) constitute part of the enabling works for the CRL. The works (the Project) involve the construction of an extension to the existing passenger rail network from the current termination point inside the Britomart Transport Centre (BTC), westwards underneath the former Chief Post Office building (CPO) and lower Queen Street. The Project footprint is generally shown by the blue shaded area in Figure 1.1 below.
LEGEND CRL alignment BTC designation CRL designation C1 worksite
Figure 1.1: Project Footprint
1.1
Purpose of the Construction Noise and Vibration DWP
This CNV DWP has been prepared to manage the adverse effects relating to construction noise and vibration during the construction of the Project. It is required under Condition 36 of the CRL designation and Condition 28 of the BTC designation. The objective of the CNV DWP is to provide for the development and implementation of the identified best practicable option to avoid, remedy or mitigate the adverse effects on receivers of noise and vibration resulting from construction of the Project. This CNV DWP incorporates the requirements of both the CRL and BTC designations and will be implemented throughout the construction period. It outlines the Project construction noise and vibration performance standards that must, as far as practicable, be complied with, along with management and mitigation measures that shall be implemented during the construction works 1. It is noted that the noise and vibration requirements in the CRL and BTC designation conditions are generally aligned and largely duplicated.
Baseline surveys of the existing noise environment were undertaken to inform the BTC Notice of Requirement (NoR) for alteration of the existing designation (BTC NoR Noise Assessment dated 26 May 2015 prepared by Marshall Day Acoustics)
1
Some construction activities are predicted to exceed the Project performance standards. Where compliance cannot be achieved within the CRL designation, site specific management plans will be implemented. Site Specific Construction Noise Management Plans (SSCNMP) and Site Specific Construction Vibration Management Plans (SSCVMP) are required under Conditions 37 and 38 of the CRL designation to detail the best practicable option to avoid, remedy or mitigate adverse effects on a receiver resulting from noise or vibration that does not comply with the Project Noise and Vibration Standards. This CNV DWP has been prepared by Marshall Day Acoustics Ltd for the Downer Soletanche Bachy Joint Venture (the Contractor - DSBJV) and is attached as Appendix F of the Construction Environmental Management Plan (CEMP) for the Project.
1.2
Relevant Conditions
Table 1.1 identifies the designation conditions relevant to this CNV DWP and where they are addressed in the document. Table 1.1: Condition No.
CNV DWP conditions and DWP section where addressed Condition
Relevant section of DWP CRL Designation Conditions 2
Project Standards – Construction Noise 31.1
Construction noise shall comply with the following Project Standards (unless otherwise provided for in a SSCNMP which is approved under Condition 37, 39 or 40):
Receiver Type Occupied commercial and industrial buildings (including offices) Sensitive Noise and Vibration Receivers (excluding offices) Early Childhood Education Centres (whilst occupied during normal opening hours) Bear Park Early Childhood Education Centre at 32 Akiraho Street (whilst occupied during normal opening hours)
Section 3.1
Monday to Sundays and At all other Saturday Public Holidays times 0700 – 2200 0700 – 2200 2200 – 0700 75 dB LAeq
75 dB LAeq
75 dB LAeq
75 dB LAeq 90 dB LAFmax
65 dB LAeq 1 80 dB LAFmax2
60 dB LAeq 75 dB LAFmax
35 dB LAeq in sleeping areas
35 dB LAeq in sleeping areas 65 dB LAeq in outdoor playing areas
Notes: Conditions as attached to the Environment Court Decision No. [2015] NZEnvC 191; 10 November 2015. The conditions set appended to the decision is dated 21 October 2015.
2
Condition No.
Condition
Relevant section of DWP
1. 60dB LAeq for NoR 5 and NoR 6; and 2. 75dB LAFmax for NoR 5 and NoR 6. 31.2
Construction noise shall be measured and assessed in accordance with the provisions of NZS 6803:1999
Sections 3.1.1 and 7.1
Project Standards – Construction Vibration 33.1
Construction vibration (including blasting) shall comply with the following Project Standards for building damage (unless otherwise provided for in a SSCVMP which is approved under Condition 38, 39 or 40). Short-term (transient) vibration1 Type of Structure
Commercial/ Industrial Residential/ School Historic or sensitive structures
PPV at the foundation at a frequency of
Section 3.2
Long-term (continuous) vibration
PPV at PPV at horizontal horizontal plane of plane of highest highest floor floor
1-10Hz
10-50Hz
50-100Hz
(mm/s)
(mm/s)
(mm/s)
(mm/s)
(mm/s)
20
20 – 40
40 – 50
40
10
5
5 – 15
15 – 20
15
5
3
3–8
8 – 10
8
2.5
Note: 1.
33.2
Standard DIN 4150-3:1999 defines short-term (transient) vibration as “vibration which does not occur often enough to cause structural fatigue and which does not produce resonance in the structure being evaluated”. Long-term (continuous) vibration is defined as all other vibration types not covered by the short-term vibration definition.
Construction vibration (including blasting) shall be measured in accordance with German Standard DIN 4150-3:1999.
Sections 3.2 and 7.3
Project Standards – Construction Vibration (Amenity) 34.1
Between the hours of 10pm and 7am vibration generated by construction activities (excluding blasting) shall not exceed:
Section 3.2.2
(a) A Peak Particle Velocity (PPV) of 0.3mm/s when measured at any part of the floor of any bedroom; and (b) A noise level of 35 dB LAeq (15min) when measured in any bedroom. 34.2
Between the hours of 7am and 10pm vibration generated by construction activities (excluding blasting) shall not exceed: (a) A Peak Particle Velocity (PPV) of 1mm/s as measured on the floor of the receiving room for residentially occupied habitable
Section 3.2.2
Condition No.
Condition
Relevant section of DWP
rooms, bedrooms in temporary accommodation and medical facilities; and (b) A Peak Particle Velocity (PPV) of 2mm/s as measured on the floor of the receiving room for retail and office spaces (including work areas and meeting rooms). 34.3
The limits in 34.1 and 34.2 shall only be investigated and applied upon the receipt of a complaint from any building occupant. They shall not be applied where there is no concern from the occupant of the building.
Sections 3.2.2, 6 and 7.
34.4
Where the limits in 34.1 and 34.2 are found (through measurement) to be exceeded then a SSCVMP shall be prepared for that receiver (Condition 38).
Section 4.2
Construction Noise and Vibration DWP For the avoidance of doubt, this condition is applicable to the management of construction noise and vibration on all receivers, including sensitive and notable receivers. 36.1
A Construction Noise and Vibration DWP shall be prepared and implemented. The objective of the Construction Noise and Vibration DWP is to provide for the development and implementation of identified best practicable option to avoid, remedy or mitigate the adverse effects on receivers of noise and vibration resulting from construction.
This document
36.2
The Construction Noise and Vibration DWP shall: (a) Adopt the noise and vibration standards for construction set out in Conditions 31, 32, 33 and 34 of these designations;
Section 3.1.1
36.3
(b) Be generally consistent with the draft Construction Noise and Vibration management plan submitted as part of the Notice of Requirement documentation (dated 23 August 2013); and
Section 3.1.1
(c) Identify methods to achieve best practicable option for mitigating adverse effects.
Section 5.4
To achieve this objective, the Construction Noise and Vibration DWP shall include: (a) The roles and responsibilities of the noise and vibration personnel in the contractor team with regard to managing and monitoring adverse noise and vibration effects;
Sections 2.4 and 5
(b) That piling and road cutting will be restricted to between the hours of 7am to 7pm, Monday to Saturday;
Section 5.2
(c) Construction machinery and equipment to be used and their operating noise and vibration levels;
Sections 4.1, 4.2. Appendix B and C Section 8.2, Appendix B and C
(d) Identification of construction activities that are likely to create adverse noise and vibration effects, the location of these in the construction site areas, and the distance to comply with the Project Criteria in Conditions 31, 32, 33 and 34; (e) The timing of construction activities that are likely to create an adverse noise and vibration effect;
Appendix B and C
(f) The location of sensitive noise and vibration receivers;
Section 3.1.2, 3.2.3 and Appendix D Section 6 and Appendix E
(g) A record of communication and consultation with sensitive noise and vibration receivers. The record must include a clear
Condition No.
Condition
Relevant section of DWP
explanation of where any comments from sensitive receivers have not been incorporated in the Construction Noise and Vibration DWP, and the reasons why not. This information must be included in the Construction Noise and Vibration DWP provided to both the Independent Peer Review Panel and Auckland Council as part of the Outline Plan process specified in Condition 11; (h) Specific measures to address the concerns raised by those sensitive receivers;
Sections 6 and 7
(i) Specific training procedures for construction personnel including; (i) The project noise and vibration performance standards for construction (conditions 31, 32, 33 and 34); (ii) Information about noise and vibration sources within the construction area and the locations of sensitive noise and vibration receivers; and (iii) Construction machinery operation instructions relating to mitigating noise and vibration;
Section 5.1
(j) Methods and measures to mitigate adverse noise and vibration effects including, but not limited to, structural mitigation such as barriers and enclosures, the scheduling of high noise and vibration construction, use of low noise and vibration machinery, temporary relocation of affected receivers or any other measures or offer agreed to by the Requiring Authority and the affected receiver;
Sections 5, 6, 7, Appendix B and C
(k) The proposed methods for monitoring construction noise and vibration to be undertaken by a suitably qualified person for the duration of construction works including: (i) Updating the predicted noise and vibration contours based on the final design and construction activities; (ii) Confirm which buildings are to be subject to a pre and post building condition survey in accordance with Condition 46. This includes consideration of those buildings in Appendix One and Two to these conditions; (iii) The timing and location for monitoring of buildings during construction is required (Note that the flow charts contained in Appendices B and C of Appendix J of the technical noise and vibration report provided as part of the Notice of Requirement should be used as a guide); (iv) Identifying appropriate monitoring locations for receivers of construction noise and vibration; (v) Procedures for working with the Communication and Consultation Manager to respond to complaints received on construction noise and vibration, including methods to monitor and identify noise and vibration sources; (vi) Procedures for monitoring construction noise and vibration and reporting to the Auckland Council Consent Monitoring officer; and
Section 7
(vii) Procedures for how works will be undertaken should they be required as a result of the building condition surveys;
Sections 4.1, 4.2 and 9 Section 7.6
Section 7 and Appendix B and C
Sections 7, Appendix B & C Sections 6 and 8 Section 7
Section 7.6
Condition No.
Condition
(l) Cross references to the specific sections in the Communication and Consultation Plan which detail how landowners and occupiers are to be communicated with around noise and vibration effects.
Relevant section of DWP Section 6
Site Specific Construction Noise Management Plan (SSCNMP) 37.1
The objective of a SSCNMP is to detail the best practicable option to avoid, remedy or mitigate adverse effects on a receiver resulting from construction noise that does not comply with the Project Noise Standards.
This document
37.2
Further to the Construction Noise and Vibration DWP in Condition 36, a SSCNMP shall be prepared for any receiver or activity for which air overpressure is either predicted or measured to exceed the limits in Condition 32, or where construction noise is either predicted or measured to exceed the Project Noise Standards in Condition 31, except where the exceedance of the standards in Condition 31 is less than 5 decibels and does not exceed : (a) 0700-2200: 1 period of up to 2 consecutive weeks in any 2 months (b) 2200-0700: 1 period of up to 2 consecutive nights in any 10 days.
Section 3.1.2 and Appendix D
37.3
For predicted exceedances of less than 5 decibels (refer 37.2) monitoring shall be undertaken to confirm the actual noise levels. If exceedance is shown to be more than 5 decibels, or the period exceeds those detailed, then a SSCNMP will be prepared.
Sections 4.1.2 and 7.1
37.4
In addition to the SSCNMPs prepared in accordance with Condition 37.2, and notwithstanding Condition 37.1, the Requiring Authority shall prepare SSCNMPs specifying the best practicable option for management, methods and measures to mitigate all noise effects for the properties located at: (a) 1 Queen Street (Lot 1 DP 165403); (b) 21 Queen Street (Lot 1 DP 67723); (c) 29 Customs Street West (Lot 7 DP 77037) (d) 188 Quay Street (Lot 5 DP 63972 and Lot 1 DP 78340); and (e) 23-29 Albert Street (Lot 1 DP 116724).
Sections 3.1.2, 4.1.2 and Appendix D
37.5
SSCNMPs will identify: (a) The extent to which noise may exceed the Project Noise Standards in Condition 31 or the overpressure limits in Condition 32; (b) The timing and duration of any exceedance; (c) Details of the type of activity causing any exceedance; (d) The summary of the communication and consultation undertaken with the receiver. The summary must include a clear explanation of where any comments have not been incorporated, and the reasons why not. This information must be included in the SSCNMP provided to both the Independent Peer Review Panel and Auckland Council as part of the Outline Plan process specified in Condition 11;
Appendix D
Condition No.
Condition
Relevant section of DWP
(e) The methods and measures to mitigate noise effects, including but not limited to, potential to offer temporary relocation of affected receivers, alternative ventilation, faรงade sound insulation improvements, building condition surveys in the case of overpressure generated by blast events, or other offers made by the Requiring Authority and whether these have been agreed to by the affected receiver; (f) The reasons why the management and mitigation measures and methods reflect best practicable option. 37.6
The SSCNMP shall be submitted for the review of Auckland Council as part of the Outline Plan. The works shall then be undertaken in accordance with the SSCNMP confirmed by the Requiring Authority as part of the Outline Plan.
Section 9
Site Specific Construction Vibration Management Plan (SSCVMP) 38.1
The objective of a SSCVMP is to detail the best practicable option to avoid, remedy or mitigate adverse effects on a receiver resulting from vibration that does not comply with the Project Vibration Standards.
Section 3.2.3 and Appendix D
38.2
Further to the Construction Noise and Vibration DWP in Condition 36, a SSCVMP shall be prepared: (a) For any unoccupied buildings, structure or infrastructure for which construction vibration is either predicted or measured to exceed the Project Vibration Standards in Condition 33; (b) Where a complaint or concern is raised and the vibration level exceeds the amenity levels of Condition 34.2(a) and 34.2(b); (c) In response to other concerns or complaints where required (refer to Condition 17); and (d) For the properties listed in Condition 37.4.
Sections 3.2.3 and 4.2.2
38.3
Where the amenity limits in Conditions 34.2(a) and 34.2(b) are exceeded: (a) Best practicable management of vibration must be applied; and (b) The vibration activity shall be scheduled to avoid disturbance. If this is not practicable then reasonable respite periods shall be provided to reduce vibration exposure.
Section 3.2.2
38.4
The limits in condition 33 may be relaxed by a SSCVMP but only for a building, structure or infrastructure that has been assessed by a suitably qualified and experienced structural engineer and where it has been deemed to be capable of withstanding higher vibration levels without sustaining building or structural damage, and where appropriate vibration and building condition monitoring regimes are in place.
Section 3.2.2
38.5
SSCVMPs will identify: (a) The timing and duration of any exceedance; (b) Details of the type of activity giving rise to any exceedance; (c) Site Specific vibration criteria that addresses the issue(s) of concern (i.e. building damage, amenity and sensitive equipment). Site Specific criteria shall be determined by a suitably qualified independent vibration expert; (d) The summary of the communication and consultation undertaken with the receiver. The summary must include a clear explanation of where any comments have not been incorporated, and the reasons why not. This information must
Sections 3.2.2, 4.2.2 and Appendix D
Condition No.
Condition
Relevant section of DWP
be included in the SSCVMP provided to both the Independent Peer Review Panel and Auckland Council as part of the Outline Plan process specified in Condition 11; (e) The methods and measures to mitigate vibration effects, including but not limited to, investigating alternative lowvibration construction methods, undertaking high-vibration works outside sensitive times, vibration barriers, building condition surveys, potential to offer temporary relocation of affected receivers, or other offers made by the Requiring Authority and agreed to by the affected receiver. (f) The reasons why the management and mitigation measures and methods reflect best practicable option. 38.6
The SSCVMP shall be submitted for the review of Auckland Council. The works shall then be undertaken in accordance with the SSCVMP confirmed by the Requiring Authority as part of the Outline Plan.
Section 9
Britomart Transport Centre Designation Conditions 3 Construction Noise and Vibration DWP For the avoidance of doubt, this condition is applicable to the management of construction noise and vibration on all receivers, including sensitive and notable receivers. 25.1
Subject to condition 25.2 construction noise shall comply with the following Project Standards:
Receiver Type Occupied commercial and industrial buildings (including offices) Sensitive Receivers (excluding offices)
Section 3.1
Monday to Sundays and At all other Saturday Public Holidays times 0700 – 2200 0700 – 2200 2200 – 0700 75 dB LAeq
75 dB LAeq
75 dB LAeq
75 dB LAeq 90 dB LAFmax
65 dB LAeq 80 dB LAFmax
60 dB LAeq 75 dB LAFmax
25.2
Where the limits in 25.1 are found (through measurement) to be exceeded then the best practicable option, as defined in the Construction Noise and Vibration DWP will be implemented (Condition 28).
Sections 5.3 to 5.5
25.3
Construction noise shall be measured and assessed in accordance with the provisions of NZS 6803:1999. The measurement and assessment location is external to the buildings at 1m from the façade.
Sections 3.1.1 and 7.1
26.1
Construction vibration shall comply with the following Project Standards for building damage:
Section 3.2
Type of Structure
Short-term (transient) vibration1
Long-term (continuous) vibration
Conditions as attached to Auckland Transport’s Confirmation Notice of 17 March 2016 on Notice of Requirement to alter the Britomart Transport Centre Designation
3
Condition No.
Condition
Relevant section of DWP PPV at the foundation at a frequency of 1-10Hz
10-50Hz
(mm/s)
(mm/s)
PPV at PPV at horizontal horizontal plane of plane of 50-100Hz highest highest floor floor (mm/s)
(mm/s)
(mm/s)
1. Commercial/ Industrial
20
20 – 40
40 – 50
40
10
2. Residential/ School
5
5 – 15
15 – 20
15
5
3. Structures that are historic (of intrinsic value) and are sensitive structures
3
3–8
8 – 10
8
2.5
26.2
Line 1 of the above table shall apply to the Britomart Transport Centre with the exception of those elements listed in 26.3.
26.3
Line 2 shall apply to the CPO’s masonry façade. In accordance with Standard DIN 4150-3:1999, measurements shall be made as close as practicable to the masonry façade at both the level of the foundations supporting the masonry façade and at the level of the CPO’s highest floor (refer to Appendix 3).
Appendix D CPO SSCVMP
Note: 1.
Standard DIN 4150-3:1999 defines short-term (transient) vibration as “vibration which does not occur often enough to cause structural fatigue and which does not produce resonance in the structure being evaluated”. Long-term (continuous) vibration is defined as all other vibration types not covered by the short-term vibration definition.
26.4
Construction vibration shall be measured in accordance with German Standard DIN 4150-3:1999.
Sections 3.2 and 7.2
26.5
Where the limits in 26.1 are found (through measurement) to be exceeded then the best practicable option, as defined in the Construction Noise and Vibration DWP will be implemented for that receiver (Condition 28 (h) and (i)), provided that Condition 28.3(p) is complied with.
Section 7.2, 7.4, 7.5 and 8.3
Project Standards – Construction Vibration (Amenity) 27.1
Between the hours of 10pm and 7am vibration generated by construction activities shall not exceed:
Section 3.2.2
a)
A Peak Particle Velocity (PPV) of 0.3mm/s when measured at any part of the floor of any bedroom; b) A noise level of 35 dB LAeq (15min) when measured in any bedroom. 27.2
Between the hours of 7am and 10pm vibration generated by construction activities shall not exceed: (a) A Peak Particle Velocity (PPV) of 1mm/s as measured on the floor of the receiving room for residentially occupied habitable
Section 3.2.2
Condition No.
Condition
Relevant section of DWP
rooms, bedrooms in temporary accommodation and medical facilities; and (b) A Peak Particle Velocity (PPV) of 2mm/s as measured on the floor of the receiving room for retail and office spaces (including work areas and meeting rooms). 27.3
The limits in 27.1 and 27.2 shall be investigated and applied only upon the receipt of a complaint from any building occupant. They shall not be applied where there is no identified concern from an occupant of a building.
Sections 3.2.2, 6 and 7.
27.4
Where the limits in 27.1 and 27.2 are found (through measurement) to be exceeded then the best practicable option, as defined in the Construction Noise and Vibration DWP will be implemented for that receiver Condition 28).
Section 7.3, 7.5, 8.2 and 8.3
Construction Noise and Vibration DWP For the avoidance of doubt, this condition is applicable to the management of construction noise and vibration on all receivers, including sensitive receivers. 28.1
A Construction Noise and Vibration DWP shall be prepared and implemented. The objective of the Construction Noise and Vibration DWP is to provide for the development and implementation of identified best practicable options to avoid, remedy or mitigate the adverse effects on receivers of noise and vibration resulting from construction.
28.2
The Construction Noise and Vibration DWP shall: (a) Adopt the noise and vibration standards for construction set out in Conditions 25, 26 and 27 of this designation. (b) Be generally consistent with the draft Construction Noise and Vibration DWP submitted as part of the Notice of Requirement documentation. (c) Identify methods to achieve the best practicable option for mitigating adverse effects.
28.3
To achieve this objective, the Construction Noise and Vibration DWP shall include: (a) The roles and responsibilities of the noise and vibration personnel in the contractor team with regard to managing and monitoring adverse noise and vibration effects. (b) External piling and saw cutting will be restricted to between the hours of 7am to 7pm, Monday to Saturday. (c) Exclusion of vibratory rolling and rock breaking during night-time periods (10pm to 7am) unless equipment trials confirm compliance can be achieved with Project criteria in condition 27.1. (d) A restriction on the use of sheet piling and vibratory rolling unless it can be demonstrated that any material damage to the CPO will be avoided. (e) Construction machinery and equipment to be used and their operating noise and vibration levels. (f) Acoustic hoardings shall be installed over all ground floor windows and doors of the Chief Post Office prior to construction commencing.
This document
Section 3.1.1 Section 3.1.1
Section 5.4
Sections 2.4 and 5 Section 5.2 Section 5.2
Sections 4.1.1, 4.2.1, 5.2 Section 4, Appendix B & C Section 5.5
Condition No.
Condition
Relevant section of DWP
(g) Mobile acoustic enclosures shall be used for concrete cutting activities if this is the Best Practicable Option and in accordance with health and safety procedures. (h) Identification of construction activities that are likely to create adverse noise and vibration effects, the location of these in the construction site areas, and the distance to comply with the Project Criteria in Conditions 25, 26 and 27 of this designation. (i) Identification of each activity that is predicted to exceed or measured to exceed the limits in conditions 25, 26 or 27 and the best practicable option to minimise adverse effects from those construction activities that is generally consistent with section 8.3 of the draft Construction Noise and Vibration DWP submitted as part of the NoR documentation. (j) The timing of construction activities that are likely to create an adverse noise and vibration effect. (k) The location of sensitive noise and vibration receivers. (l) A record of communication and consultation with sensitive receivers. The record must include a clear explanation where any comments from sensitive receivers have not been incorporated in the Construction Noise and Vibration DWP, and the reasons why not. This information must be included in the Construction Noise and Vibration DWP provided to both the Independent Peer Review Panel and Auckland Council as part of the Outline Plan process specified in Condition 11. (m) Specific measures to address the concerns raised by those sensitive receivers. (n) Specific training procedures for construction personnel including: (i) The project noise and vibration performance standards for construction (conditions 25, 26 and 27).
Section 5.5
Section 4, Appendix B and C Sections 4, 5, 8, Appendix B and C
Sections 4, Appendix B & C Section 8 Sections 6 and 7, Appendix E
Sections 5, 6, 7, 8 Section 5.1
(ii) Information about noise and vibration sources within the
construction area and the locations of sensitive noise and vibration receivers.
(iii) Construction machinery operation instructions relating to mitigating noise and vibration.
(o) Methods and measures to mitigate adverse noise and vibration effects including, but not limited to, structural mitigation such as barriers and enclosures, the scheduling of high noise and vibration construction, use of low noise and vibration machinery, temporary relocation of affected receivers or any other measures or offer agreed by the Requiring Authority and the affected receiver. (p) Monitoring systems and construction methodologies shall be developed and implemented so that the vibration limits given in 26.1 are not exceeded unless: (i) Further detailed assessment of the specific construction plant to be used (from site specific trials); and (ii) Specific vulnerability assessment of all sensitive features of the CPO building have been undertaken; that
Sections 5, 6, Appendix B and C
Section 7
Condition No.
Condition
Relevant section of DWP
(iii) Clearly demonstrate that higher vibration limits are appropriate. (q) The vulnerability assessment of sensitive features (required by condition 28.3(p)(ii) shall include:
Section 7
(i) A description of the existing condition and quality of the features; (ii) An assessment of the likely extent of the effect of the higher vibration limits on those features; and (iii) Clear identification of the areas to which the higher limits apply. (r) The proposed methods for monitoring construction noise and vibration to be undertaken by a suitably qualified person for the duration of construction works including: (i) Updating the predicted noise and vibration contours based on the final design and construction activities. (ii) Confirm which buildings are to be subject to a pre and post building condition survey in accordance with Condition 31. This includes consideration of those buildings in Appendix 1. (iii) The timing and location for monitoring of buildings during construction is required. (iv) Identifying appropriate monitoring locations for receivers of construction noise and vibration. (v) Procedures for working with the Communication and Consultation Manager to respond to complaints received on construction noise and vibration, including methods to monitor and identify noise and vibration sources.
Sections 4.1, 4.2 and 9 Section 7.5 Section 7 Section 7, Appendix B & C Section 6 and 8
(vi) Procedures for monitoring construction noise and vibration and reporting to the Auckland Council Consent Monitoring officer.
Section 7
(vii) Procedures for how works will be undertaken should they be required as a result of building condition surveys
(s) Cross references to the specific sections in the Communication and Consultation Plan which detail how landowners and occupiers are to be communicated with about noise and vibration effects. (t) The identification of structure type (in accordance with condition 26) of any buildings or structures subject to a building condition survey required by condition 31.
1.3
Section 7.5 Section 6
Section 3.3
Sustainability
City Rail Link Limited (CRLL) is seeking an Infrastructure Sustainability Council of Australia (ISCA) Infrastructure Sustainability (IS) rating for the Project. Further details can be found in the Project CEMP and Sustainability Rating Management Plan. Project sustainability requirements that relate directly to this CNV DWP are included in Appendix A. These requirements are imbedded within the Delivery Work Plans and management plans for the Project to ensure that sustainability is a key focus and ‘the way we do things’.
In some cases the IS requirements and sustainability goals enhance the designation requirements.
1.4
DWP Review and Updates
This CNV DWP is a live document that will be reviewed and updated during the course of the Project to reflect material changes associated with construction techniques, communication, mitigation or the natural environment. Any material changes to this DWP must be certified by Auckland Council (AC) prior to any on-site activity reliant upon the change commencing. A formal review process is described in Section 9 of this DWP. It is noted that SSCNMP and SSCVMP documents will not be completed until the Project commences, allowing for finalisation of the construction methods and monitoring of noise and vibration levels. Potentially affected parties have been identified in this DWP and an outline SSCNMP or SSCVMP for each is contained in Appendix D.
2
Project Description
2.1
Overview
The Project involves constructing an extension to the existing passenger rail network from the current termination point within the BTC, westwards underneath the CPO Building and lower Queen Street. Separate works are being undertaken to continue the CRL tunnels from this point under the Downtown Shopping Centre site (which is being redeveloped by Precinct Properties), and then up Albert Street. Significant works beneath the CPO will be undertaken, including piling and diaphragm wall construction. In lower Queen Street, secant piling will be installed across the road corridor, excavation undertaken to form the rail tunnels followed by reinstatement of the road corridor following the completion of works. During construction, existing ticketing and retail functions and pedestrian access to the station will be accommodated in the new temporary station building, east of the CPO and Glasshouse buildings. Surface works will also be required in QEII Square associated with the Downtown Shopping Centre redevelopment, including construction of the CRL rail tunnels beneath this site (Precinct Properties scope of work).
2.2
Construction Zones
The Project will be divided into four discrete active construction zones (ACZ) as shown in Figure 2.1.
Figure 2.1: Active Construction Zones
The main works to be undertaken in each ACZ are summarised in Table 2.1. Table 2.1:
Proposed works
Stage
Description
Dates
Duration
Stage 1 – Temporary station access, construction of temporary accommodation in Station Plaza and streetscape works
• Construction of temporary station facilities and access in Station Plaza to the rear of the BTC • Removal of bus stops, shelters and canopies from Tyler and Galway Streets • Kerbside management changes • Construction of new vehicle crossing on Tyler Street • Remove existing stairs and escalators • Other enabling works
July 2016 to January 2017
7 months
Stage 2 – CPO building works, piling, removal of CPO ground floor
• • • •
Construction of dust and noise barriers Strip out CPO CPO ground floor demolition CPO diaphragm wall construction commences
January 2017 to May 2017
4 months
Stage 3 – piling, CPO underpinning excavation, tunnel construction and backfilling.
• • • • • • • •
CPO diaphragm wall construction Underpinning of CPO Lower Queen Street Piling CPO and lower Queen Street excavation Tunnel Construction Backfill excavation Lower Queen Street reinstatement Reinstate and re-open CPO
May 2017 to May 2020
36 months
Stage 4 – Reinstatement & station fit out
• Streetscape reinstatement • Tie in rail tunnels with existing track alignment • Removal of temporary station accommodation in Station Plaza
April 2020 to August 2020
4 months
A detailed description of the construction works is provided in the Project CEMP. It should be noted that no blasting will be required for the Project.
2.3
Programme
The indicative Project construction programme is contained in the CEMP (refer to Section 2.13).
2.4
Key Personnel
This CNV DWP has been prepared by Craig Fitzgerald from Marshall Day Acoustics, a professional member of the Acoustical Society of New Zealand (MASNZ). The key personnel responsible for this CNV DWP are detailed in Table 2.2. The Noise and Vibration Monitoring Manager will be responsible for implementing this CNV DWP. The Monitoring Manager will receive suitable training from the Specialist Noise and Vibration Advisor. It should be noted that during Construction, the Project hotline 0800 CRL TALK will be operational 24 hours a day; 7 days a week to field any Project related queries or complaints.
Table 2.2:
Key Personnel
Role
Name
Organisation
Phone
Project Director
Dale Burtenshaw
DSBJV
021 115 1819
Dale.Burtenshaw@dsbjv-crl.co.nz
Communication s Manager
Brandy Smith
DSBJV
027 692 3783
Brandy.Smith@dsbjv-crl.co.nz
Noise & Vibration Monitoring Manager
Sarah Sutherland
DSBJV
021 956 397
Sarah.Sutherland@dsbjv-crl.co.nz
Compliance and Monitoring Officer
Timothy O’Grady
Auckland Council
021 834 584
Timothy.OGrady@aucklandcouncil.co.nz
Specialist Noise & Vibration Advisor
Craig Fitzgerald
MDA
09 379 7822
craig.fitzgerald@marshallday.co.nz
3
Performance Standards
3.1
Noise
3.1.1
Designation Conditions
The relevant Project Construction Noise Standards in BTC designation Condition 25 and CRL designation Condition 31 are summarised in Table 3.1. Construction noise shall be measured and assessed in accordance with the provisions of New Zealand Standard NZS 6803:1999 “Acoustics Construction Noise”. Relevant buildings and their structure types are detailed in Section 3.3. There are no Notable Noise and Vibration Receivers. Table 3.1:
Project Standards - Construction Noise
Receiver Type
Monday to Saturday
Sundays and Public Holidays
At all other times
0700 – 2200
0700 – 2200
2200 – 0700
Occupied commercial and industrial buildings (including offices)
75 dB LAeq
75 dB LAeq
75 dB LAeq
Sensitive Receivers (excluding offices)
75 dB LAeq 90 dB LAFmax
65 dB LAeq 80 dB LAFmax
60 dB LAeq 75 dB LAFmax
Any predicted or measured exceedance from activities occurring in the designations must be mitigated as far as practicable using the measures in this CNV DWP.
3.1.2
Site Specific Construction Noise Management Plans
Any predicted or measured exceedance from activities occurring in the CRL designation must have a SSCNMP in accordance with CRL designation Condition 31, except where the exceedance is less than 5 decibels and does not exceed: •
0700-2200: 1 period of up to 2 consecutive weeks in any 2 months; or
•
2200-0700: 1 period of up to 2 consecutive nights in any 10 days.
For predicted exceedances of less than 5 decibels, monitoring shall be undertaken to confirm the actual noise levels (refer Section 7 of this DWP). The objective of a SSCNMP is to detail the best practicable option(s) to avoid, remedy or mitigate adverse effects on a receiver resulting from construction noise that does not comply with CRL designation Condition 31. SSCNMPs shall identify the matters outlined in CRL designation Condition 37, summarised as follows (refer to Table 1.1 for condition full wording): •
The relevant activity, its timing, duration and predicted magnitude of exceedance (refer to Section 4.1 of this DWP);
•
A summary of the communication and consultation undertaken with the receiver; and
•
The specific methods or measures employed to mitigate the noise effects (refer to Section 5 and this DWP).
A site specific plan may address both construction noise and vibration, in which case it would be a SSCNVMP. Site specific management plans are included in Appendix D.
3.2
Vibration
3.2.1
Designation Conditions – Building Damage
The relevant Project Construction Vibration (building damage) Standards in BTC designation Condition 26 and CRL designation Condition 33 are summarised in Table 3.2. Construction vibration shall be measured and assessed in accordance with German Standard DIN 4150-3:1999. Relevant buildings and their structure types are detailed in Section 3.3. Table 3.2:
Project Standards – Construction Vibration (Building Damage)
Line Type of Structure
Short-term vibration1 PPV at the foundation at a frequency of (mm/s) 1-10Hz
10-50Hz 50-100Hz
Long-term vibration
PPV at horizontal PPV at horizontal plane of highest plane of highest floor (mm/s) floor (mm/s)
1
Commercial / Industrial
20
20 – 40
40 – 50
40
10
2
Residential / School
5
5 – 15
15 – 20
15
5
3
Structures that are historic (of intrinsic value) and are sensitive structures 4
3
3–8
8 – 10
8
2.5
Note 1: DIN 4150-3:1999 defines short-term (transient) vibration as “vibration which does not occur often enough to cause structural fatigue and which does not produce resonance in the structure being evaluated”. Long-term (continuous) vibration is defined as all other vibration type. If in doubt, apply the long-term limits.
Note that BTC Condition 26.2 specifically applies Line 1 of Table 3.2 to the BTC, with the exception of the CPO’s masonry facade for which Line 2 shall apply, in accordance with BTC Condition 26.3.
3.2.2
Designation Conditions – Amenity
The relevant Project construction vibration (amenity) standards are contained in BTC designation Condition 27 and CRL designation Condition 34. The limits in these conditions are only to be applied upon the receipt of a complaint from a building occupant. Relevant buildings and their structure types are detailed in Section 3.3. Table 3.3:
Project Standards – Construction Vibration (Amenity)
Receiver Type
Day: 0700 – 2200
Night: 2200 – 0700
Vibration PPV (mm/s)
Reradiated noise (dB LAeq 15min)
Vibration PPV (mm/s)
Reradiated noise (dB LAeq 15 min)
Occupied residential
1
50
0.3
35
Occupied commercial and retail
2
55
2
55
Note: ‘Reradiated noise’ and ‘ground-borne noise’ are two terms referring to the same thing. This is the audible result of vibration exciting the receiving structure. While perceived as noise, the mechanism is separate to airborne noise which is addressed in Section 3.1.1.
4
Description from line 3 of BTC condition 26.1. Note Line 3 of CRL condition 33 refers to “Historic or Sensitive structures”
3.2.3
Site Specific Construction Vibration Management Plans
The objective of a SSCVMP is to detail the best practicable option to avoid, remedy or mitigate adverse effects on a receiver resulting from construction vibration that does not comply with CRL designation Conditions 33 or 34, or in response to other concerns or complaints in accordance with CRL designation Condition 17. SSCVMPs shall identify the matters outlined in CRL designation Condition 38, summarised as follows (refer to Table 1.1 for condition full wording): •
The relevant activity, its timing, duration and predicted magnitude of exceedance (refer to Section 4.2 of this DWP);
•
A summary of the communication and consultation undertaken with the receiver (refer to Section 6 and Appendix E of this DWP); and
•
Site specific vibration criteria, methods or measures that addresses the issue(s) of concern (i.e. building damage, amenity or sensitive equipment).
A site specific plan may address both noise and vibration, in which case it would be a SSCNVMP. Project site specific management plans are included in Appendix D.
3.3
Receiver and Building Types
The relevant receiver types (noise) and building types (vibration) are summarised in Figure 3.1 and Table 3.4. E
F
D
G H
C
I
A J
K
B O
Figure 3.1: Receiver and Building Types
N
M
L
Table 3.4:
Receiver and Building Types
Building Name
Address
Receiver Type (noise)1
Building Type (vibration)2 BTC Conditions 26.2 & 26.3
A
Chief Post Office (CPO)
12 Queen St
Not Applicable3
B
Mercure Hotel
8 Custom St E
Sensitive/Residential
Residential
C
Zurich House
21 Queen St
Retail/Commercial
Commercial
D
Downtown Shopping Centre
7 Queen St
Not Applicable5
Not Applicable5
E
HSBC House
1 Queen St
Retail/Commercial
Commercial
F
Endeans Building
2 Queen St
Retail/Commercial & Sensitive/Residential
Historic
G
HarbourView
152 Quay St
Commercial & Sensitive/Residential
Residential
H
148 Quay Street
148 Quay St
Retail/Commercial & Sensitive/Residential
Residential
I
Rabobank Tower
2 Commerce St
Retail/Commercial
Commercial
J
Britomart Pavilions
4 Commerce St
Retail/Commercial
Commercial
K
Britomart Pavilions
6 Commerce St
Retail/Commercial
Commercial
L
Excelsior House
22-24 Customs St Retail/Commercial E
Historic
M
Levy Building
20 Customs St E
Retail/Commercial
Historic
N
Old Sofrana House
14-18 Customs St Retail/Commercial E
Historic
O
Barrington Building
10-12 Custom St E Retail/Commercial
Historic
4
Notes: 1. Based on known occupancies 2. Based on known heritage status and structural engineer preliminary recommendation (note that residential occupancy does not automatically correlate to residential structure categorisation and may be updated upon further investigation as appropriate) 3. The CPO will be unoccupied during the construction period 4. The Serious Fraud Office (SFO) is located on level 6 of Zurich House. It is understood that three meeting rooms are used for recording of witness statements. The CRL definition for Notable Noise and Vibration Receivers defines a number of spaces. One of which is “in relation to the requirement to record witness statements – The Auckland District Court in Albert Street”. This definition does not include the SFO facilities. Nonetheless, they should be afforded particular attention for this sensitive activity. 5. Downtown Shopping Centre is demolished.
4
Predicted Construction Noise and Vibration Levels
4.1
Noise
The Noise and Vibration Monitoring Manager will be responsible for predicting construction noise. Appendix B includes a table detailing the proposed construction machinery, their sound power levels and unmitigated setback distances to comply with 75 dB LAeq. A chart of regression curves is also provided, which can be used to estimate the risk of non-compliance from individual equipment items based on their distance to receivers. While the construction noise limits apply to the cumulative received noise level from all activities on-site, a single equipment item will typically dominate the level at any one receiver. The risk of individual equipment items exceeding the relevant limit can be determined as follows: •
Identify the sound power level of the relevant equipment item;
•
Determine the setback distance between the equipment / works and the nearest façade of a noise sensitive receiver (building);
•
Estimate the construction noise level at the noise sensitive façade using the ‘construction noise regression curves’; and
•
If the received noise level is predicted to be greater than 75 dB LAeq, mitigation measures will be required to enable compliance (refer to Section 5 of this CNV DWP). Note with reference to Section 5.5, an effective acoustic barrier will typically reduce the noise levels by up to 10 decibels provided the line-of-sight between the source and receiver is interrupted.
Whilst the noise from individual sources may be predicted to be less than 75 dB LAeq, the cumulative noise level from multiple simultaneous activities may at times exceed this limit. Detailed cumulative assessments should be undertaken with guidance from the Specialist Noise and Vibration Advisor where there are: •
Two high noise sources, each predicted to exceed 72 dB LAeq at the receiver
•
Three high noise sources, each predicted to exceed 70 dB LAeq at the receiver
Predicted cumulative noise emissions from high noise and/or intensive activity phases are included in Appendix B. The figures in Appendix B will be updated and expanded as necessary to ensure they are representative of the construction works and phasing in accordance with the process outlined in Section 7.2 of this CNV DWP. Based on the modelling results in Appendix B, SSCNMPs are required for the following buildings (and are included in Appendix D): •
HSBC House (1 Queen Street);
•
Endeans building (2 Queen Street);
•
Zurich House (21 Queen Street); and
•
Hotel Mercure (8 Customs Street East).
4.2
Vibration
The Noise & Vibration Monitoring Manager will be responsible for predicting construction vibration. Appendix C includes a table of high vibration activities and their approximate safe distances to enable compliance with the Project building damage limits 5. A chart of vibration regression curves is The long-term building damage criteria from DIN 4150-3:1999 have been adopted because they are the most stringent vibration criteria apart from the amenity controls (which are only applied in response to a complaint).
5
also provided. These are based on measured and collected data for each vibration activity and express how vibration level reduces with distance. The risk of vibration levels exceeding the relevant limit can be estimated as follows: •
Identify the vibration activity of concern;
•
Identify the setback distance from the proposed works location to the nearest façade of a noise sensitive receiver;
•
Identify the classification of that receiver (i.e. Heritage, Residential, Commercial); and
•
Identify the corresponding dotted line on the chart in Appendix C and locate its intersection point with the regression curve of the vibration activity. If the receiver lies within the corresponding setback distance, then mitigation measures (refer to Section 5 of this DWP) will be required and a SSCVMP must be prepared for that receiver.
The data in Appendix C shall be updated in accordance with the process outlined in Section 7.3 as the construction phase progresses, incorporating measured data to ensure accuracy and relevance. Note that unlike noise, cumulative vibration levels are not considered because the limits are a peak level, which only one item of equipment can generate at any one time. Based on the equipment listed in Appendix C, and the proposed location of this equipment during the various construction phases of the Project (refer Appendix B), SSCVMPs are required for the following buildings and are included in Appendix D: •
Endeans building (2 Queen Street); and
•
CPO (12 Queen Street).
5
Mitigation and Management
5.1
Training
All staff will participate in an induction training session when they commence work on the Project. The induction will include a briefing on this CNV DWP, with attention given to the following matters: •
Roles and responsibilities for management of noise and vibration matters.
•
Construction noise and vibration limits.
•
Information about noise and vibration sources on-site.
•
Noise and vibration mitigation and management procedures.
•
The sensitivity of receivers to noise and vibration, and any operational requirements and constraints identified through communication and consultation.
•
Complaints management procedures.
Awareness of current noise and vibration matters on, or near active worksites, will be addressed during site meetings and/or ‘toolbox’ training sessions.
5.2
Construction hours
•
Normal construction hours are Monday to Saturday, 0700 – 1900 hrs.
•
External piling and saw cutting activities (i.e. outside the CPO envelope) are limited to Monday to Saturday, 0700 – 1900 hrs.
•
No vibratory rolling and concrete breaking at night (2200 – 0700 hrs) unless equipment trials confirm compliance with the amenity limits in Section 3.2.2, Table 3.3 of this CNV DWP.
•
When close to residential buildings, above ground high-noise and/or vibration activities shall be scheduled during the day where practicable (to avoid the night-time period).
•
When close to commercial buildings, high-noise and/or vibration activities shall be scheduled for evening and night-time periods, provided these activities can comply with the night-time noise limits at residential receivers. This conflict is expected to constrain night-time activities.
5.3
Mechanical plant selection
Some activities have the potential to exceed the Project construction noise and vibration limits at close receiver distances (e.g. installation of diaphragm walls, excavation and road works). It is essential that appropriate mitigation and management measures are identified and employed in advance of the works to avoid exceedances. When selecting construction equipment, where practicable: •
Quiet and low vibration equipment/models will be used in favour of noisy/high vibration equipment (e.g. Secant piling instead of vibro piling).
•
Equipment will be well maintained.
•
Exhaust silencers will be fitted.
•
Fit or upgrade engine covers in consultation with equipment manufacturer.
•
Substitute diesel engines with electric motors.
5.4
General mitigation measures
Best Practical Option (BPO) mitigation will be implemented throughout the construction programme to avoid exceedances. This will include, but not be limited to the following:
•
Keep the construction time near noise sensitive areas to a minimum.
•
Avoid unnecessary noise, such as shouting, the use of horns, loud site radios and banging or shaking excavator buckets.
•
Tonal reversing alarms shall be prohibited on site. Suitable alternatives may include flashing lights, broadband audible alarms or reversing cameras inside vehicles.
•
Mitigate track squeal from tracked equipment, such as excavators and piling rigs. This may include tensioning and watering or lubricating the tracks regularly.
•
Avoid high engine revs where practicable through appropriate equipment selection.
•
Engines shall be turned off when idle / parked.
•
Maximise the distance between the noise source and the nearest sensitive receiver by positioning fixed plant away from sensitive receivers, or orienting machinery to maximise the distance between the engine exhaust and the nearest sensitive building façade where practicable (e.g. excavators, piling rigs and hydro vac).
•
Where plant is identified as being particularly noisy and/or vibration inducing, action will be taken to reduce emissions. This may involve the fitting of mitigation devices, such as silencers, enclosures or isolation pads.
•
Crane and secure loads using straps in preference to chains where safe and practicable.
•
Utilise power from the national grid in preference to generators where practicable.
•
Utilise noise barriers and enclosures where effective (expanded in Section 5.5).
•
Implement further measures identified through communication and consultation with sensitive receivers (refer to Section 6 of this DWP).
•
Undertake regular noise and vibration monitoring to confirm compliance, or identify high noise and/or vibration machinery (refer to Section 7 of this DWP).
5.5
Noise barriers and enclosures
Noise barriers will be used in areas where a noise limit (refer to Section 3.1 of this DWP) is predicted to be exceeded and would provide effective mitigation. Noise barriers would typically reduce levels at ground floor receivers by 10 decibels. Above the ground floor, where there is line of sight to the activity, barriers will provide little acoustic benefit. The barriers and/or enclosures will be installed prior to the identified works commencing. More specifically, BTC designation Condition 28.3(f) requires acoustic hoardings on all ground floor windows and doors of the CPO prior to construction commencing, and BTC designation Condition 28.3(g) requires acoustic enclosures for concrete cutting where practicable. The following guidelines must be incorporated in the design and utilisation of temporary noise barriers: •
•
The panels should be constructed from materials with a minimum surface mass of 6.5 kg/m2. Suitable panels include 12 mm plywood or the following proprietary ‘noise curtains’: −
Duraflex ‘Noise Control Barrier - Performance Series’ (www.duraflex.co.nz)
−
Soundex ‘Acoustic Curtain - Performance Series' (www.ultimate-solutions.co.nz)
−
Flexshield ‘Sonic Curtain with 4 kg/m2 mass loaded vinyl backing’ (www.flexshield.co.nz)
−
Alternatives should be approved by a suitably qualified acoustic professional because some proprietary noise curtains have insufficient surface mass for general use
Positioned to block line of sight between the construction activity and receiving position(s), with site perimeter hoardings, typically at least 2m high.
•
Positioned as close as practicable to the noisy construction activity.
•
Abutted or overlapped to provide a continuous screen.
The following guidelines must be incorporated in the design and utilisation of noise enclosures: •
Enclosures will be used where a noise barrier is not sufficient to achieve compliance with the noise limits (refer to Section 3.1 of this DWP) and it is practicable to do so (e.g. stationary plant such as compressors, pumps, generators, air tools and road cutting activities).
•
Enclosures shall be designed by a suitably qualified and experienced acoustic specialist.
6
Communication
6.1
Communication Overview
Communication with Project stakeholders in relation to construction noise and vibration impacts is described in Section 8.2 of the Project Communication and Consultation Plan. A summary of communication with sensitive receivers will be maintained in Appendix E of this CNV DWP, including a clear explanation of where any comments from sensitive receivers have not been incorporated, and the reasons why not, as well as any outstanding issues or disputes.
6.2
Complaints response
The Project Hotline (0800 CRL TALK) will be clearly included in any written Project notifications and on Project signage located in proximity to the Project area. Any construction noise or vibration complaints received by the Project Hotline will be recorded in a complaints file, and an investigation will be undertaken as outlined in Section 5.3.1 of the CEMP and the Project Communication and Consultation Plan. The investigation will involve the following: •
Identification of sources of concern, and measuring or estimating noise and/or vibration levels at the time of the complaint.
•
Acknowledge receipt of the concern or complaint. An initial response shall be undertaken within 24 hours of receiving a complaint, and resolved as soon practicable. If a reasonable complaint relates to building damage or sleep disturbance, inform the on-duty site manager as soon as practicable to cease works pending the investigation (refer Section 7.4).
•
Reporting the findings and recommendations.
•
Actions and time taken to close-out complaint.
•
Communication with the complainant.
•
Reporting of the investigation in the complaints file.
A record of all concerns and / or complaints received will include, where applicable: •
The name of the person(s) who raised the concern or complaint (unless they elect not to provide this) and details of the concern or complaint.
•
Weather conditions at the time of the concern or complaint, including wind direction and cloud cover if the complaint relates to noise.
•
Known construction activities at the time and in the vicinity of the complainant during the concern or complaint period.
•
Remedial actions undertaken (if any) and the outcome of these, including additional construction noise or vibration monitoring of the activity.
7
Monitoring
7.1
Real Time Web Monitoring
Up to three noise monitors and three vibration monitors will be measuring continuously throughout the construction works period. They will be set up by the Specialist Noise & Vibration Advisor at locations representative of the most exposed or sensitive noise and vibration receivers for each stage of works (refer Section 3.3). The noise and vibration monitoring data from each monitoring unit will be available in real time via web based management interfaces (one for noise and one for vibration). The web based system will be set up to notify the Noise & Vibration Monitoring Manager if pre-set thresholds (alarms) are exceeded. The Specialist Noise & Vibration Advisor will provide training to the Noise & Vibration Monitoring Manager to ensure they understand the relevant noise and vibration conditions, the CNV DWP, and appropriate response protocols for alarms or notifications received from the web based monitoring systems. The Noise & Vibration Monitoring Manager is responsible for monitoring the data on a daily basis, reporting the monitoring results to Auckland Council when requested by the Consent Monitoring Officer, and providing a first response to any alarms or notifications. A comment should be entered for every alarm notification to enable an audit at a later date if required. The Specialist Noise & Vibration Advisor will provide six monthly equipment servicing (e.g. monitor relocation and calibration), technical support as required, and additional attended monitoring in response to complaints, exceedances or to measure specific activities with reference to Sections 7.2 and 7.3 of this CNV DWP.
7.2
Attended Noise Monitoring
Construction noise will be measured and assessed by the Specialist Noise & Vibration Advisor (or approved representative) as follows: •
In accordance with the requirements of NZS 6803: 1999.
•
During the first external use of high noise equipment, including concrete cutting, diaphragm wall rig, secant piling rig, other phases of construction that may exceed the relevant standards, or in response to a reasonable noise complaint being received.
•
At one metre from the most affected building façade, or, if this position is not accessible, at an equivalent position where practicable. If this is not possible, measured noise levels shall be undertaken at a proxy position and adjusted for distance and façade reflections as appropriate.
•
For a representative duration not less than 10 minutes and not greater than 60 minutes for fluctuating noise sources. A representative duration of less than 10 minutes may be suitable for steady noise sources. The noise level shall be reported with the measurement duration, e.g. 65 dB LAeq (15min). The monitoring reports shall be kept with Appendix B of this DWP.
•
The monitoring results shall be used to update Section 4.1 and Appendix B of this DWP as appropriate.
A flow chart showing the process for attended noise monitoring is included as Figure 7.1 overleaf.
Figure 7.1: Attended Noise Monitoring Flow Chart
7.3
Attended Vibration Monitoring
Construction vibration will be measured and assessed by the Specialist Noise & Vibration Advisor (or approved representative) as follows: •
In accordance the requirements of DIN 4150-3:1999.
•
During the first use on-site of a concrete breaker, diaphragm wall rig, vibratory roller, plate compactor or other phases of construction when vibration may exceed the building damage limits, or in response to a reasonable vibration complaint being received. The use of the sheet piling rig and vibratory roller is specifically restricted unless measurements demonstrate that material damage to the CPO will be avoided.
•
At the closest building foundations, or, if this position is not accessible, at an equivalent position where practicable. If this is not possible, measured vibration levels shall be undertaken at a proxy position and adjusted for distance and building response as appropriate. For the CPO masonry façade, measurements shall also be undertaken on the CPO’s highest floor level in accordance with BTC Condition 26.3.
•
For a representative construction duration, measured in contiguous one second intervals. The monitoring reports shall be kept with Appendix B of this DWP.
•
The monitoring results shall be used to update Section 4.2 and Appendix C of this DWP as appropriate.
Re-radiated noise from construction vibration will be measured and assessed by the Specialist Noise & Vibration Advisor (or approved representative) as follows: •
In response to a reasonable complaint being received.
•
Inside the inhabited room(s) of interest, or, if this position is not accessible, in an equivalent room where practicable. If this is not possible, measured vibration levels shall be undertaken at a proxy position and adjusted for distance and building response as appropriate.
•
For a representative duration not less than 10 minutes and not greater than 60 minutes for fluctuating noise sources. A representative duration of less than 10 minutes may be suitable for steady noise sources. The noise level shall be reported with the measurement duration, e.g. 35 dB LAeq (15min). The monitoring reports shall be kept with Appendix B of this DWP.
•
The monitoring results shall be used to update Section 4.2 of this DWP as appropriate.
A flow chart showing the process for attended vibration monitoring is included as Figure 7.2 overleaf. Any noise or vibration monitoring survey undertaken by the Specialist Noise & Vibration Advisor (or approved representative) will be summarised in a report, to be submitted to the Communications Manager within one week of the assessment. The reports will be kept at the site office and made available upon request.
Figure 7.2: Attended Vibration Monitoring Flowchart Reporting
7.4
Contingency measures
7.4.1
Noise
The following procedures will be implemented where measured construction noise exceeds the Project standards: •
Further measurements may be required to determine the extent of the exceedance and identify the activity(s) responsible.
•
Review the mitigation strategy and construction methodology to ensure BPO is applied.
•
Further measurements may be required to determine the effectiveness of BPO measures and reassess the compliance status.
•
Determine if the receiver qualifies for a SSCNMP as outlined in Section 3.1.2 of this DWP.
•
The Communications Manager shall liaise with affected parties as outlined in Section 8 of this DWP.
7.4.2
Vibration – Building Damage
The following procedures will be implemented where measured construction vibration exceeds the Project standard: •
The activity giving rise to the exceedance should cease as soon as safe and practicable to do so.
•
Determine if the receiver qualifies for a SSCVMP as outlined in Section 3.2.3 of this DWP.
•
A detailed building condition survey will be undertaken as detailed in Section 7.5 of this DWP.
•
The Communications Manager will liaise with the building owner throughout this process.
7.4.3
Vibration – Amenity
In the event that a complaint is received and a measurement demonstrates exceedance of the Project vibration or reradiated noise amenity limits, the following procedures will be implemented: •
Further measurements may be required to determine the extent of the exceedance and identify the activity(s) responsible.
•
Review the mitigation strategy and construction methodology to ensure BPO is applied.
•
Further measurements may be required to determine the effectiveness of BPO measures and reassess the compliance status.
•
Determine if the receiver qualifies for a SSCNVMP as outlined in Section 3.2.3 of this DWP.
•
The Communications Manager shall liaise with affected parties as outlined in Section 8 of this DWP.
7.5
Building condition surveys
Prior to the construction commencing, detailed pre-construction condition surveys 6 will be undertaken in accordance with BTC designation Condition 31 and CRL designation Condition 46 (refer CEMP Section 5.1.16 and Built Heritage DWP Section 6). The buildings listed below are an An assessment of the vibration effects associated with the Project works from a building structures perspective was undertaken to inform the BTC NoR ‘City Rail Link Project – Technical Specialist Assessment Structural Assessment of Vibration Effects on Buildings’ dated 25 May 2015, prepared by Aurecon New Zealand Limited, along with ‘City Rail Link Project Technical Specialist Assessment Ground borne Noise and Vibration City Rail Link Britomart Transport Centre Notice of Requirement Alteration to Designation’ dated 25 May 2015, prepared by SLR Consulting Australia Pty Ltd
6
amalgam of those buildings required to be surveyed under the BTC and CRL designation conditions at a minimum. The buildings include the following: •
HSBC House (1 Queen Street);
•
Endeans building (2 Queen Street);
•
CPO (12 Queen Street);
•
Zurich House (21 Queen Street);
•
148 Quay Street;
•
HarbourView Building (152 Quay Street);
•
Mercure Hotel (2-8 Customs Street East);
•
Barrington Building (10 Customs Street East);
•
Former Sofrana house (14-18 Customs Street East);
•
Levy Building (20 Customs Street East).
The surveys include, but will not be limited to, the following: •
Determination of building specific vibration damage risk thresholds.
•
Condition of the building, service or structure, including existing levels of any aesthetic damage or structural damage.
•
Record, including photographs, of the major features of the buildings, services and structures including location, type, construction, age and present condition, including defects.
•
Foundation type of the building, service or structure.
•
A report shall be prepared recording the findings of the survey. A copy of the report shall be provided to the building owner. A second copy shall be kept at the site office.
In addition, a ‘vulnerability assessment’ of CPO sensitive features shall be undertaken in accordance with BTC designation Condition 28.3 (q) where the vibration limits in BTC designation Condition 26.1 are exceeded. It shall include the following (refer CPO SSCVMP in Appendix D): •
A description of the existing condition and quality of the features;
•
An assessment of the likely extent of the effect of the higher vibration limits on those features;
•
Clear identification of the areas to which the higher limits apply.
Resurveys of buildings, services and structure, may be undertaken during construction if they are subject of complaints or if the vibration criteria in Section 3.2 of this DWP has been exceeded and there is potential for damage to have occurred. Post-construction condition surveys may be required in accordance with BTC designation Condition 31.4 and CRL designation Condition 46.4.
8
Affected Parties
8.1
Airborne Noise
8.1.1
Façade Sound Insulation Performance
The noise level received inside, for example an office or living room, will depend on the sound insulation performance of the façade (particularly the glazing) and room constants (such as the room dimensions and surface finishes). These factors can vary widely. The Construction Noise Standard (NZS 6803) recommends noise limits assessed at 1m from the external façade of a building, assuming a sound level difference of 20 decibels to sensitive receiving environments inside. For the purpose of estimating actual noise effects on a room by room basis, the predicted façade sound insulation performance of buildings can be generally categorised by the type of glazing / ventilation provision as follows: •
Sealed glazing
30 decibels sound level difference
•
Operable windows
25 decibels sound level difference
•
Open Windows
15 decibels sound level difference.
The SSCNMP’s in Appendix D use site specific measured performance where practicable. In other cases, a visual inspection is considered sufficient to provide an informed estimate of façade performance. Note a generic façade performance may be suitable for a large office building with repeating open plan floor layouts (e.g. Zurich House and HSBC House). However, others may require a more detailed assessment due to variation in room size and acoustic sensitivity of receiving spaces fronting the worksite (e.g. Endeans building and Mercure Hotel).
8.1.2
Noise Effects
‘Noise effects matrices’ are presented in Table 8.1 and Table 8.2. They enable estimation of the construction noise level received inside, based on the external noise level and façade glazing type. The noise effects matrices are indicative only, as detailed assessment requires measurement of the actual façade performance on a space by space basis. The noise effects are categorised generally using the following colour coding: •
Green:
Acceptable
•
Orange:
Appreciable
•
Red:
Significant.
To use the matrices, follow this three step process: •
Measure the external noise level at 1m from the façade, or estimate it from Section 4.1 of this DWP;
•
Determine the category of façade glazing sound insulation performance from Section 8.1.2 of this DWP or measured on-site façade sound level difference for a specific receiver location; and
•
Use the relevant lookup table to estimate the received internal noise level, and associated typical effects that may be experienced, using Table 8.1 and Table 8.2.
Table 8.1:
Daytime noise levels in commercial & industrial buildings and habitable rooms in dwellings
External Noise Level (dB LAeq)
Estimated Internal Noise Level (dB LAeq)
(refer Appendix B)
Sealed glazing (Dw 30 dB)
Operable windows (Dw 25 dB)
Open windows (Dw 15 dB)
95
65
70
80
90
60
65
75
85
55
60
70
80
50
55
65
75
45
50
60
70
40
45
55
65
35
40
50
•
< 50 dB LAeq
Typically acceptable
•
50 – 60 dB LAeq
Annoyance and reduction in work efficiency
•
> 60 dB LAeq
Difficulty holding a normal conversation and reduction in work efficiency
Table 8.2:
Night-time noise levels in bedrooms of dwellings
External Noise Level (dB LAeq)
8.2
Estimated Internal Noise Level (dB LAeq)
(refer Appendix B)
Sealed glazing (Dw 30 dB)
Operable windows (Dw 25 dB)
Open windows (Dw 15 dB)
75
45
50
60
70
40
45
55
65
35
40
50
60
30
35
45
55
25
30
40
50
20
25
35
•
< 35 dB LAeq
Typically acceptable
•
35 – 40 dB LAeq
Annoyance and sleep disturbance for some noise sensitive receivers
•
> 40 dB LAeq
Annoyance and sleep disturbance for most noise sensitive receivers
Reradiated Noise
No high vibration activities are proposed at night. Therefore, no significant adverse effects from reradiated noise are predicted. During the day, airborne noise is predicted to control noise levels received inside. However if required, the effects can be estimated with reference to the qualitative statements from Table 8.1.
8.3
Management of Significant Adverse Effects
The following process will be implemented for any construction activity that is found to exceed the relevant construction noise and vibration conditions: •
Review the construction methodology, mitigation and management strategies to ensure they represent the BPO.
•
The Communications Manager will consult with affected parties to understand their particular sensitivities, including times, activities and locations. Consultation will focus on a collaborative approach to managing the adverse effects from construction noise and vibration while works are undertaken in the vicinity. The Communications Manager (or representative) will be available 24/7. A record of consultation will be included in the relevant SSCNMP (refer to Appendix D) or otherwise in Appendix E as appropriate.
•
Implement measures to avoid significant adverse effects as agreed with the affected party and monitor the activity to verify the extent of any adverse effects.
•
The installation of mechanical ventilation will be considered for noise sensitive receivers where external windows must be closed in order to avoid significant adverse noise effects and no alternative ventilation system is present. This will be implemented only after all other general noise management and mitigation have been deemed impracticable.
•
Temporary relocation will be considered for sensitive receivers where all practicable noise and vibration management and mitigation measures have been implemented and significant adverse noise effects are predicted. This will be in exceptional cases only, and advice from the Specialist Noise and Vibration Advisor (refer Table 1.2) will be sought prior.
9
DWP Review and Updating (including SSCNMPs and SSCVMPs)
This CNV DWP has undergone a review process with the relevant CRL Community Liaison Group (CLG) and a suitably qualified independent peer reviewer. An explanation of how any comments received from either the CLG or Peer Reviewer have been addressed is provided in Appendix F.
9.1
Review Process
The CNV DWP (including SSCNMPs and SSCVMPs) will be updated throughout the course of the Project: a b
To reflect material changes associated with changes to construction techniques, the natural environment or due to unresolved complaints; and As part of the annual management review of the DWP.
The annual review of the CNV DWP (including SSNVMPs) will be undertaken at least annually by the Project Management team and the CRLL Representatives. The management review will be organised by the Environmental and Sustainability Manager and the Project team will be informed of any changes to this CNV DWP through the regular Project communications processes. The review will take into consideration: •
Compliance with the CRL and BTC designation conditions, the CEMP, DWPs and EMPs (including site specific plans) and material changes to these plans.
•
Any significant changes to construction activities or methods.
•
Key changes to roles and responsibilities within the Project team.
•
Changes in industry best practice standards.
•
Changes in legal or other requirements (social and environmental legal requirements, consent conditions, CRLL objectives and relevant policies, plans, standards, specifications and guidelines).
•
Results of inspections, monitoring and reporting procedures associated with the management of adverse effects during construction.
•
Comments or recommendations from Auckland Council regarding the CEMP, CNV DWPs and EMPs.
•
Unresolved complaints and any response to complaints and remedial action taken to address the complaint.
9.2
DWP Updates
The process for updating this CNV DWP (including SSCNVMPs) as a result of a material change to the Project or the annual review, is as follows (refer to CRL designation Condition 23 and BTC designation Condition 22 for further information): •
Any material change to this DWP must be consistent with the purpose and objective of the relevant conditions listed in Table 1.1 of this document.
•
Affected parties and the CLG must be notified of the review and any material change proposed to this DWP.
•
This DWP must clearly document the comments and inputs received from affected parties in relation to any material changes, along with a clear explanation of where any comments have not been incorporated, and the reasons why not.
•
Any material change proposed to this DWP shall be subject to an independent peer review as required by CRL designation Condition 11 and BTC designation Condition 12.
•
Any material change proposed to this DWP relating to an adverse effect shall be submitted for approval to Auckland Council Compliance and Monitoring Officer, at least 10 working days prior to the proposed changes taking effect. If any changes are not agreed, the relevant provisions of the RMA relating to approval of outline plans shall apply.
A copy of the original CNV DWP document and subsequent versions will be kept for the Project records, and marked as obsolete. Each new / updated version of the CNV DWP documentation will be issued with a version number and date to eliminate obsolete CNV DWP documentation being used. A summary of the review process will be provided annually to Auckland Council and otherwise be made available on request.
10
Management and Control of Documents
All project documentation is created, reviewed, approved, issued, revised, retained, and superseded in accordance with the project’s Document Management & Control Plan, which includes the requirement for records of review and authorisation to be maintained. The following documents support the processes described in this CNV DWP and supporting SSCNVMP’s in Appendix D: 1. Project Induction 1.1. Full Induction Presentation Content 1.2. Full Induction Register 2. Toolbox Talks Records 3. Communication and Complaints Register 4. Marshall Day Reports 4.1. Monthly Monitoring Reports 4.2. Attended Monitoring Reports 5. Building Condition Surveys 5.1. Pre-construction 5.2. Post-construction 6. Annual Review 6.1. Record of review of DWP
Appendix A:
ISCA Requirements
Table A identifies the ISCA Credit Requirements relevant to this CNV DWP and where they are addressed in the documents. Table A: ISCA Requirements Credit
Requirement *
Relevant section
Other relevant information / comments
Construction Noise DIS-2 Level 1
Baseline studies of existing noise environment have been carried out for the project
Sections 1.1, 7.5, 8.1.1
DIS-2 Level 1
Predictions for noise developed for construction
Sections 4.1, 8.1 Appendix B
DIS-2 Level 1
Measures to mitigate noise during construction have been identified and implemented
Sections 1.1, 3.1.2, 4.1, 5.1, 5.2, 5.3, 5.4, 5.5, 7.4.1, 8.3 Appendix D
DIS-2 Level 1
Noise monitoring undertaken at appropriate intervals
Section 7.1, 7.2
DIS-2 Level 1
Noise monitoring undertaken in response to complaints
Sections 6.2, 7.2
Refer also to the Communication and Consultation Plan
DIS-2 Level 3
Modelling and monitoring demonstrates no divergence from the noise management process
Sections 1.1, 3.1.1, 3.1.2, 7.1, 7.4.1 Table 1.1
Refer also to the Noise Monitoring Results and Report (Section 7.3)
• Refer to the Britomart Transport Centre Notice of Requirement (NoR) Noise Assessment dated 26 May 2015 prepared by Marshall Day Acoustics for detail on noise surveys of the existing environment and visual inspections of surrounding buildings. • Modelling has been undertaken in order to inform the predicted construction noise and vibrations levels outlined in Section 4 of this DWP. • Further baseline monitoring will be undertaken to support the preparation of SSCNVMPs (refer to Sections 3.1.2 and 3.2.3)
Refer also to the Site Specific Construction Noise Management Plans
Construction Vibration DIS-3 Level 1
Dilapidation surveys have been undertaken for properties potentially impacted by vibration
Section 7.5 CRL Condition 46
Refer also to the Historic Character DWP and the Construction Environmental Management Plan
Credit
Requirement *
Relevant section
Other relevant information / comments
DIS-3 Level 1
Predictions for vibration have been developed
Section 4.2, Appendix C
DIS-3 Level 1
Measures to mitigate vibration during construction have been identified and implemented
Sections 1.1, 3.2.3, 4.2, 5.1, 5.2, 5.3, 5.4, 7.4.2, 7.4.3
DIS-3 Level 1
Vibration monitoring undertaken at appropriate intervals
Section 7.2
DIS-3 Level 1
Vibration monitoring undertaken in response to complaints
Sections 6.2, 7.3
DIS-3 Level 2
Sensitive facilities that may be impacted by vibration have been identified
Sections 3.1.2, 7.5
Refer also to the Historic Character DWP
DIS-3 Level 2
Baseline vibration studies have been undertaken for sensitive facilities
Sections 3.1.2, 7.5
Refer also to: • The City Rail Link Project – Technical Specialist Assessment Structural Assessment of Vibration Effects on Buildings, dated 25 May 2015 and prepared by Aurecon New Zealand Limited • City Rail Link Project Technical Specialist Assessment Ground borne Noise and Vibration City Rail Link Britomart Transport Centre Notice of Requirement Alteration to Designation dated 25 May 2015, prepared by SLR Consulting Australia Pty Ltd
DIS-3 Level 2
Modelling and monitoring demonstrates no exceedences if vibration goals for structural damage
Sections 1.1, 3.1.2 and 7.2 Table 1.1
Refer also to Vibration Monitoring Results and Report
DIS-3 Level 2
No physical damage has been caused to any buildings or structures by vibration caused by construction
Section 7.4.2
Refer also to Vibration Monitoring Results and Report
Refer also to the Site Specific Construction Noise Management Plans and the Historic Character DWP
* Refer to ISCA Rating Tool for full details of the requirement
Appendix B:
Noise Level Predictions
Reinstatement
Excavation
Piling
Demolition
Size / Power
#
Sound Power (dB LAw)
75 dB LAeq Setback (m)
-
2
121
79
1
Large excavator (30T – 50T) Various mounted breaker
2
Chainsaw
Chainsaw
<90cc
1
116
45
3
Concrete saw
Hand/Walk behind
<150cc
2
115
40
4
Wire saw
Wire saw
<150cc
2
115
40
5
Hand breaker or small excavator (1.5T-3T) mounted breaker
Electric & hydraulic
Varies
2
111
25
6
Grinder
Cutting & grinding
4” to 9”
1
108
18
7
Pulveriser
1
104
11
8
Vibro sheet piling
LRB HS845 crane
448HP
1
116
45
9
Vibro sheet piling
HEC Hammer
230HP
1
113
32
10
Rotary bored piling
Soilmec SR40
304 HP
1
111
25
11
Diaphragm wall rig
HC05
522 kW
1
105
13
12
Jet grouting drilling rig, plant and pump
Casagrande C6
125HP
2
105
13
13
Long reach excavator
Long reach, steel track
40T
2
106
14
14
Excavator (20T)
Steel track
20T
2
103
10
15
Excavator (<14T)
Rubber & steel track
<14T
2
102
9
16
Skid Loader
Skid steer loader
3.5T
2
96
4
17
Conveyor machine
-
-
1
81
1
18
Trench Wacker
Petrol
<80kg
2
108
18
19
Plate Compactor
Petrol & Diesel
40kg – 500kg
2
108
18
20
Vibratory roller
Diesel Twin drum
<10t
2
103
10
21
Pneumatic tyred roller
Diesel
<10t
1
103
10
22
Soil Roller
Pad foot, or single drum
<10t
1
103
10
23
Paving machine
Asphalt Paving machine
20T
1
103
10
1
Location / Site ACZ-D
Type
ACZ-C
Item Equipment
ACZ-B
Activity
Equipment Sound Levels
Activity Ancillary plant Vehicles Note:
Item Equipment
Type
Size / Power
#
Sound Power (dB LAw)
75 dB LAeq Setback (m)
24
Hydro vac
6w – 8w Hydro vac
3” – 6”
2
107
16
25
Bentonite
Desanding Unit DES
392 kW
1
104
11
26
Concrete pump
Boom & Line
2”- 4”
1
103
10
27
Grouting plant
Techniwell 30
65 kW
1
104
11
28
Submersible Pumps
2” – 4” Submersible
2” – 4”
2
93
3
29
Waterblaster
Towable
<3000psi
1
93
3
30
Pump
High Pressure Pump
447 kW
1
93
3
31
Pump
Mission Pump
66 kW
1
93
3
32
Generator
750 kVA
850 HP
1
93
3
33
Generator
250 kVA
250 HP
1
93
3
34
Compressor
Compressor 1000 L
7.5 kW
1
93
3
35
Fork lift
Electric or Diesel
150HP
1
95 (moving)
4
36
Elevated Work Platforms/Scissor lifts
Electric or Diesel
-
2
95/91 (moving/idling)
4/3
37
Mobile Crane
Extendable boom
12t – 100t
2
98/88
6/2
38
Mobile Crane
Mobile Crane 50T
270 kW
1
98/88
6/2
39
Concrete truck
6 & 8 wheeler
6w & 8w
Varies
106/84
14/1
40
4w truck
4w tipper truck
4w
1
106/84
14/1
41
6w truck
6w truck
-
Varies
106/84
14/1
42
Truck & trailer
Truck & Trailer
-
Varies
106/84
14/1
43
Machinery Transporter
Machinery Transporter
-
1
106/84
14/1
1Measured
onsite
Location / Site
Construction Noise Regression Curves
Cumulative Construction Noise Contours: •
Stage 1:
Scenario A – Galway Street Footpath Widening Scenario B – Temporary Station Construction
•
Stage 2:
Scenario A – CPO Internal Demolition Scenario B – CPO Piling
•
Stage 3:
Scenario A – Queen Street Piling Scenario B – Queen Street Excavation Scenario C – Backfill Queen Street
•
Stage 4:
Scenario A – Queen Street Paving
Appendix C:
Vibration Level Predictions
Type
Size / Power
#
Heritage
Residential
Commercial
1
Excavator mounted concrete breaker
Various sizes to suit excavator
-
2
16
11
7
8-9
Vibro sheet piling
LRB HS845 crane
230448HP
2
32
12
5
10
Rotary bored piling
Soilmec SR40
304 HP
1
3
2
1
11
Diaphrag m wall rig
HC05
522 Kw
1
16
5
2
Excavation
13-15
Excavator
Long reach, steel track
14-40T
6
16
5
2
20
Vibratory roller
Diesel Twin drum
<10t
2
30
14
7
Demolition Piling
Setback distance to achieve DIN 4150 criteria (m)
Locati on / Site
ACZ B ACZ C ACZ D
Equipmen t
Activity
Item
Reinstatement
Equipment Vibration Levels
Construction Vibration Regression Curves
BTC Appendix 3 – CPO foundations supporting the masonry façade and the building’s highest floor (Refer BTC Condition 26.3)
Appendix D:
Site Specific Management Plans (SSCNMP, SSCVMP or SSCNVMP)
D1
HSBC House SSCNMP (1 Queen Street)
D2
Endeans SSCNVMP (2 Queen Street)
D3
Central Post Office (CPO) SSCVMP (12 Queen Street)
D4
Zurich House SSCNMP (21 Queen Street)
D5
Hotel Mercure SSCNMP (8 Customs Street East)
The Site Specific Plans contained in this Appendix are based on the construction method details available at this time and on the results of consultation and the monitoring undertaken. Plans will continue to be developed, reviewed and updated regularly over the duration of the project in response to additional construction method details, consultation with building owners and occupiers and monitoring and site specific management measures developed to reflect specific requirements. Indicative details contained in these site specific plans have been highlighted.
D1
HSBC House SSCNMP (1 Queen Street)
D1.1
Introduction
This Site Specific Construction Noise Management Plan (SSCNMP) is for HSBC House, located at 1 Queen Street. A SSCNMP is required for HSBC House because construction is predicted to exceed the Project Noise Standards in CRL Condition 31. This SSCNMP has been prepared in accordance with CRL Condition 37 and is Appendix D1 of the CRL Construction Noise and Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore, directly references relevant sections of the DWP to avoid repetition. The objective of this SSCNMP is to detail the best practicable option(s) to avoid, remedy or mitigate the identified adverse effects from noise exceedances at HSBC House. Section D1.2 identifies the noise sensitive spaces in HSBC House, the predicted or measured faรงade sound insulation performance, predicted noise effects and recommended consultation thresholds. As required under CRL Condition 37.5, Section D1.3 presents: (a) (b) (c) (d) (e) (f)
The extent to which noise may exceed the Project Noise Standards (refer Table D1.3.1); The timing and duration of any exceedance (refer Table D1.3.1); The type of activity causing any exceedance (refer Table D1.3.1); A summary of the communication and consultation with the receiver (refer Table D1.3.2); The methods and measures to mitigate noise effects (refer Table D1.3.2); and A statement of why they reflect best practicable option (refer Table D1.3.2).
This SSCNMP has been prepared by Marshall Day Acoustics Ltd for DSBJV and forms part of the Construction Environmental Management Plan (CEMP) for the Project.
D1.2
HSBC House Details
Pre Construction Consultation HSBC House is owned by Precinct Properties. The tenants are summarised in the table below. Level
Tennant
Business Activity
L3
Dun and Bradstreet
Call Centre
L4
OOCL
Shipping office
L4
Tax Management
Office
L5
Yealands
Office (vacates 31 March 2016)
L7-9
HSBC
Banking office
L11, 12, 17, 19
NZTA
Office
L13
Consulate of Saudi Arabia
Office
L13
Visa
Office
L14
McVeagh Fleming
Lawyers office
L15
Baldwins
Patent attorney office
L16
CPA Australia
Accounting training office
L16
Techspace
Technical advisory office (vacates 26 May 2016)
L16
Unispace
Interior design office
Level
Tennant
Business Activity
L18
Rothbury
Insurance brokerage office
L19
Berkshire Hathaway
Insurance office
Rachel Purdy (DSBJV) and Craig Fitzgerald (Marshall Day Acoustics) met with Ben Twigden from Precinct Properties to discuss HSBC House on 10 March 2016. The matters discussed included the tenant profile, the general building layout, general noise sensitive spaces such as office and meeting rooms, and the identification of specific tenant sensitivities that require further investigation. In general, retail and common areas occupy the lower levels of HSBC House, with office space from levels 3 – 19. Each floor layout has a central services core and one or two tenancies. Each office tenancy has open plan areas and meeting rooms as part of a bespoke tenant fit-out. Rachel Purdy and Craig Fitzgerald met with David King from Dun and Bradstreet on 7 April 2016. They operate a call centre in an open plan office arrangement, with multiple meeting rooms and break out spaces distributed throughout the tenancy. It was noted that call centre staff use telephone head sets to reduce the influence of high office noise levels.
Façade Sound Insulation Performance The HSBC façade in general comprises equal parts concrete and 6mm glazing. Based on theoretical performance of the façade glazing, the average noise level received in the general office areas and meeting rooms is predicted to be 30 – 34 decibels lower than the level predicted at 1m from the external façade (range reflects variation in noise sources and receiving rooms). A sound level difference of 30 decibels is a reasonable assumption until actual site data is available. The predicted construction noise effects are summarised in the following table. External Level (dB LAeq)
Internal Level (dB LAeq) All Times > 60 dB LAeq:
Difficulty holding a normal conversation and reduction in work efficiency
95
65
90
60
85
55
80
50
50 – 60 dB LAeq: Annoyance and reduction in work efficiency
75
45
< 50 LAeq:
70
40
65
35
Typically acceptable
Consultation Trigger Level In addition to regular communication, specific consultation should be undertaken with Precinct and relevant tenants prior to construction works that are predicted to exceed 80 dB LAeq at the façade of HSBC House. The consultation process is set out in Section 8.3 of the CNV DWP.
D1.3
Activity Detail and Consultation
The following table provides details of activities that are predicted to exceed the noise limits in CRL Condition 31 and the predicted noise effects. It shall be kept up to date. Activities that are predicted to exceed the noise limit include: •
Concrete cutting and breaking
•
External secant piling works
Table D1.3.1
Activity Detail (Noise)
#
Activity Details
Predicted Noise Effects
1
Activity
Concrete cutting / breaking Nov – Dec 2017 2 months Monday to Saturday 7am to 7pm
Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Concrete cutting / breaking April – May 2018 2 months Monday to Saturday 7am to 7pm
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Period Duration Days Hours
2
Activity Period Duration Days Hours
Engagement Level:
HSBC House General Office Tenancies East façade of the building on L3 – L5 75 – 83 dB LAeq 30 decibels sound level difference 45 – 53 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation HSBC House General Office Tenancies East façade of the building on L3 – L5 75 – 83 dB LAeq 30 decibels sound level difference 45 – 53 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation
The following table provides a summary of consultation and mitigation measures agreed with HSBC House owners and/or tenants representatives relating to an activity in the table above. Table D1.3.2 #
Details
1
Receiver Date Name Phone Email CRL rep
Consultation and Mitigation **indicative examples only** Matters discussed Tenancy Levels 1-4 DD/MM/YY X X X Brandy Smith
Key Points: A. Board meetings between 9am and 10am on a Monday. B. Typical commercial hours are 9am to 5pm, Monday to Friday C. Project update requested every Friday Actions: A. Prioritise piling to the south of site during this period or delay start. B. Target weekday evenings (5pm and 7pm) and Saturdays for closest piles if practicable. C. Noted. Communications Manger to liaise and provide monitoring results. BPO Conclusion: X
D2
Endeans Building SSCNVMP (2 Queen Street)
D2.1
Introduction
This Site Specific Construction Noise and Vibration Management Plan (SSCNVMP) is for Endeans Building, located at 2 Queen Street. A SSCNVMP is required for the Endeans Building because construction is predicted to exceed the Project Noise Standards in CRL Condition 31 and/or the Project Vibration Standards in CRL Conditions 33 and/or 34. This SSCNVMP has been prepared in accordance with CRL Condition 37 and Condition 38 and is Appendix D2 of the CRL Construction Noise and Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore, directly references relevant sections of the DWP to avoid repetition. The objective of this SSCNVMP is to detail the best practicable option(s) to avoid, remedy or mitigate the identified adverse effects from noise and vibration exceedances at the Endeans Building. Section D2.2 identifies the noise sensitive spaces in the Endeans Building, the predicted or measured façade sound insulation performance, predicted noise effects and recommended consultation thresholds. It also identifies the vibration sensitive features of the Endeans Buildings, site specific vibration criteria (with reference to heritage and structural reports), predicted or measured vibration levels, predicted vibration effects and recommended consultation thresholds. As required under CRL Condition 37.5, Section D2.3 presents: (a) (b) (c) (d) (e) (f)
The extent to which noise may exceed the Project Noise Standards (refer Table D2.3.1); The timing and duration of any exceedance (refer Table D2.3.1); The type of activity causing any exceedance (refer Table D2.3.1); A summary of the communication and consultation with the receiver (refer Table D2.3.3); The methods and measures to mitigate noise effects (refer Table D2.3.3); and A statement of why they reflect best practicable option (refer Table D2.3.3).
As required under CRL Condition 38.5, Section D2.3 presents: (a) (b) (c) (d) (e) (f)
The timing and duration of any exceedance (refer Table D2.3.2); The type of activity causing any exceedance (refer Table D2.3.2); Site Specific vibration criteria that addresses concerns regarding building damage, amenity, heritage features and/or sensitive equipment (refer Table D2.3.2); A summary of the communication and consultation with the receiver (refer Table D2.3.3); The methods and measures to mitigate vibration effects (refer Table D2.3.3); and A statement of why they reflect best practicable option (refer Table D2.3.3).
This SSCNMP has been prepared by Marshall Day Acoustics Ltd for DSBJV and forms part of the Construction Environmental Management Plan (CEMP) for the Project.
D2.2
Endeans Building Details
Pre Construction Consultation Rachel Purdy (DSBJV) and Craig Fitzgerald (Marshall Day Acoustics) met with the following Endeans Building representatives on 21 March 2016: Paula Beaton, Jon Qin, Gordon Nelson, Shelley Jones and Noel Playle. The matters discussed included the resident profile, the general building layout and noise sensitive spaces such as living rooms and bedrooms in apartments. In general, commercial tenancies occupy the ground floor, with apartments on levels 1 – 7 above. There are 5 – 6 apartments per floor (labelled A-H), each accessed from a central atrium. Apartment
‘F’ on each level is located on the corner of Tyler and Queen Streets. This apartment on each floor is predicted to receive the highest construction noise levels due to its proximity to the worksite and exposure on two façades. All apartments fronting either Tyler or Queen Street rely on openable windows to regulate thermal comfort. The openable windows have a security stay which enables them to be open by approximately 5mm. It is understood that these can stay closed for a whole day in winter without the need for supplementary fresh air. Glazing in most apartments is single pane glass (thickness TBC). Bathroom extraction fans discharge at roof level. The resident profile includes a 2 year old child in apartment 5D (cnr Queen and Quay) and retired occupants who are often at home during the day. Other residents are adults or students who are generally assumed to not be at home during the day.
Façade Sound Insulation Performance On-site measurements were undertaken in the living area of apartment 2F with the windows closed. The apartment on level 2 overlooks the worksite from the corner of Queen Street and Tyler Street. The average noise level measured inside was 29 decibels lower than at 1m from the external façade. The noise levels were dominated by comparable construction activity in QEII square. Based on the measurements, the predicted construction noise effects are summarised in the following table. External Level (dB LAeq)
Internal Level (dB LAeq) Day
Night
95
66
66
90
61
61
85
56
56
80
51
51
75
46
46
70
41
41
65
36
36
Day
Night
> 60 dB LAeq:
Difficulty holding a normal conversation and reduction in work efficiency 50 – 60 dB LAeq: Annoyance and reduction in work efficiency Typically acceptable < 50 LAeq: > 40 dB LAeq: Annoyance and sleep disturbance for most noise sensitive receivers 35 – 40 dB LAeq: Annoyance and sleep disturbance for some noise sensitive receivers Typically acceptable < 35 LAeq:
Vibration Cosmetic Building Damage Babbage have undertaken a pre-construction building condition 7. Section 1.8 notes that the building is founded on piles, with cast reinforced concrete floors supported by concrete columns. The façade is constructed from reinforced masonry, clad with solid plaster. Section 1.9 summarises observed existing cracks or defects, supported by detailed descriptions and photos in Sections 5 and 6. Section 1.10 states: “It is not believed that any of the observed damage to the external facades is associated with structural damage. All cracking noted is believed to be historic rather than progressive, and is deemed to be typical for a building of this age and construction. The majority of existing cracks are redecorated over and obscured from view, although some evidence of repairs is visible.”
The report concludes: “the likelihood of further damage to façade cladding caused by construction vibration is medium”. It is understood that if construction vibration does result in new, or extends existing, cracks in plaster and paint finishes, the cosmetic damage could be readily repaired with negligible impact on the heritage value. A real time vibration monitor is located on the south façade at ground level. This location is considered representative of the vibration received in the building structure. The monitor documents and provides alerts for any high vibration activities. This information will be 7
Babbage Consulting Ltd, Pre Construction Building Condition Assessment, Endeans Building, February 2017
supplemented with attended vibration monitoring for high vibration activities at other relevant locations as appropriate. This will enable the vibration transfer function to be established, as it cannot be readily predicted in advance with any reliable accuracy.
Consultation Trigger Level In addition to regular communication, specific consultation should be undertaken Endeans Building body corporate representative and/or relevant residents prior to construction works that are predicted to exceed 79 dB LAeq at the façade of the building. The consultation process is set out in Section 8.3 of the CNV DWP. The Project Standards for cosmetic building damage are summarised in Section 3.2.1 of the CNV DWP. The Endeans building is considered a structure of historic value, and therefore the limits in line 3 of Table 3.2 apply.
D2.3
Activity Detail and Consultation
The following table provides details of activities that are predicted to exceed the noise limits in CRL Condition 31 and the predicted noise effects. It shall be kept up to date. Activities that are predicted to exceed the noise limit include: •
Concrete cutting and breaking
•
External secant piling works
Table D2.3.1
Activity Detail (Noise)
#
Activity Details
Predicted Noise Effects
N1
Activity
Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Period Duration Days Hours N2
Activity Period Duration Days Hours
N3
Activity Period Duration Days Hours
Concrete cutting & breaking, handheld/ 5T excavator May – July 2017 3 months Monday to Saturday 7am to 7pm Concrete cutting / breaking Nov - Dec 2017 2 months Monday to Saturday 7am to 7pm
Secant piling Jan 2018 – Mar 2018 3 months Monday to Saturday 7am to 7pm
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects: Engagement Level:
Apartments 1F-7F Cnr Tyler & Queen St 75 – 82 dB LAeq 29 decibels sound level difference 46 – 53 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation Apartments 1F-7F Cnr Tyler & Queen St 75 – 88 dB LAeq 29 decibels sound level difference 46 – 59 dB LAeq Typically acceptable for short periods with advanced notice. Potential to cause annoyance and reduction in work efficiency. Consultation Apartments 1F-7F Cnr Tyler & Queen St 75 – 80 dB LAeq 29 decibels sound level difference 46 – 51 dB LAeq Typically acceptable for short periods with advanced notice. Communication
Activity
N4
Period Duration Days Hours
Concrete cutting / breaking April - May 2018 2 months Monday to Saturday 7am to 7pm
Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Engagement Level:
Apartments 1F-7F Cnr Tyler & Queen St 75 – 88 dB LAeq 29 decibels sound level difference 46 – 59 dB LAeq Typically acceptable for short periods with advanced notice. Potential to cause annoyance and reduction in work efficiency. Consultation
The following table provides details of activities that are predicted to exceed the vibration limits in CRL Condition 33. It shall be kept up to date. Activities that are predicted to exceed the vibration limits include: •
Vibratory rolling
•
Concrete breaking
•
External secant piling
Table D2.3.2
Activity Detail (Vibration) ** indicative examples only**
#
Activity Details
Predicted Vibration Effects
1
Activity Period Duration Days Hours
Vibratory rolling Jan 2018 – Apr 2018 4 months Monday to Saturday 7am to 7pm
Receiver: Location: Vibration level: Site Specific limits: Heritage approval: Structural approval: Vibration effects:
Endeans Building (Heritage) Foundations of south and west facades 4mm/s PPV Building Damage: Line 2 of CRL condition 33 Yes – see Heritage report X Yes – see Structural report Y Vibration risk acceptable
2
Activity Period Duration Days Hours
X X X X X
Receiver: Location: Vibration level: Heritage approval: Structural approval: Vibration effects:
X X X X X X
The following table provides a summary of consultation and mitigation measures agreed with Endeans Building body corporate representative(s) and/or relevant tenants relating to an activity in the table above. D2.3.3
Consultation and Mitigation
#
Details
N1
Receiver Date Name Phone Email CRL rep
Matters discussed Apartments 1F-7F 03/05/17 Gordon Nelson 027 375 8925 gpetal@xtra.co.nz Brandy Smith
Key Points: A. No complaints received to date. Stakeholders happy with works management. B. Works to be carried out during standard construction hours and enclosed in noise panels C. Ongoing works updates to be provided Actions: A. Communications Manger to liaise and provide notification of upcoming works and additional information as requested. B. Install noise panels for all works.
BPO Conclusion: This is believed to be BPO as it takes into account the comments of the stakeholder, and puts in place the best practicable mitigation measures of notification and noise panels.
D3
Central Post Office (CPO) SSCVMP (12 Queen Street)
D3.1
Introduction
This Site Specific Construction Vibration Management Plan (SSCVMP) is for the CPO, located at 12 Queen Street. A SSCVMP is required for the CPO because construction is predicted to exceed the Project Vibration Standards in CRL Condition 33. This SSCVMP has been prepared in accordance with CRL Condition 38 and is Appendix D3 of the CRL Construction Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore, directly references relevant sections of the DWP to avoid repetition. The objective of this SSCVMP is to detail the best practicable option(s) to avoid, remedy or mitigate the identified adverse effects from vibration exceedances at the CPO. Section D3.2 identifies the vibration sensitive features of the CPO, site specific vibration criteria (with reference to heritage and structural reports), predicted or measured vibration levels, predicted vibration effects and recommended consultation thresholds. As required under CRL Condition 38.5, Section D3.3 presents: (a) (b) (c) (d) (e) (f)
The timing and duration of any exceedance (refer Table D3.3.1); The type of activity causing any exceedance (refer Table D3.3.1); Site Specific vibration criteria that addresses concerns regarding building damage, amenity, heritage features and/or sensitive equipment (refer Table D3.3.1); A summary of the communication and consultation with the receiver (refer Table D3.3.2); The methods and measures to mitigate vibration effects (refer Table D3.3.2); and A statement of why they reflect best practicable option (refer Table D3.3.2).
This SSCNMP has been prepared by Marshall Day Acoustics Ltd for DSBJV and forms part of the Construction Environmental Management Plan (CEMP) for the Project.
D3.2
CPO Details
Pre Construction Consultation Craig Fitzgerald (Marshall Day Acoustics) and Sarah Sutherland (DSBJV) met with Campbell Williamson (Cooper and Company), Samantha Lochery (Auckland Transport) and Richard Jenkins (Auckland Transport) on 12 May 2017. Craig Fitzgerald provided an overview of the vibration limits, the CNV DWP, this SSCVMP and the vibration monitoring results to date. The CPO building is owned by Auckland Council. The ground floor and basement levels are part of Britomart Station. The upper levels are office spaces, leased by Cooper and Company, and the subtenants manged by Britomart Group. The first floor is occupied by the DSBJV CRL C1 site office. The upper floors are unoccupied, but sub-leased by Auckland Transport for the project duration. For the proposes of this SSCVMP, consultation should be undertaken with Auckland Council (as the building owners) and Cooper and Company (as the leaseholders) for the purposes of cosmetic building damage from construction vibration. DSBJV excluded, there are no noise and vibration sensitive occupants. This SSCVMP is required for Stage 3 works in the CRL designation (lower Queen Street), but not for Stage 1 and 2 works within the BTC designation (including works within the CPO). Nonetheless, consultation is recommended prior to the main CPO foundations works commencing.
Vibration Cosmetic Building Damage
Craig Fitzgerald (Marshall Day Acoustics) met with Antony Mathews (Mathews & Mathews Architects Ltd) on 1 February 2017 to discuss CPO vibration risk thresholds for significant heritage features. Mathews and Mathews have prepared a building record 8 in accordance with the ‘Historic Heritage Delivery Work Plan (DWP) Section 4 Building Record and Salvage Strategy’. Section 5.0 is reproduced in part below: “The most vulnerable areas to damage from vibration are the areas of ceramic tiling and glass, and to a lesser extent exterior stonework. Tiles and glass are obviously brittle and once damaged cannot be repaired without replacing whole tiles or glass panes. Vibration could also result in loosing tile work. Glass domes in the main chamber are general small panes set in lead cames so probably less likely to be damaged through vibration. Any areas of unreinforced masonry with a rendered finish, damaged through vibration with cracking or loosening of rendered finish can be readily repaired. Likewise plastered ceilings, columns and other architectural elements with a rendered or plaster and paint finish can be repaired if there is damage from vibration. Any steel framed or reinforced concrete elements are unlikely to be damaged unless the vibration was significant.”
Two real time vibration monitors are located on the west façade (at ground and top floor levels). These locations are representative of the vibration received in the stonework and ceramic tiles on the west facade. The monitors document and provide alerts for any high vibration activities. This information will be supplemented with attended vibration monitoring for high vibration activities at other relevant locations as appropriate. This will enable the vibration transfer function to be established, as it cannot be readily predicted in advance with any reliable accuracy.
Consultation Trigger Level The Project Standards for cosmetic building damage are summarised in Section 3.2.1 of the CNV DWP. Note that BTC Condition 26.2 specifically applies Line 1 of Table 3.2 to the CPO, except for the western masonry façade, for which Line 2 shall apply.
D3.3
Activity Detail and Consultation
The following table provides details of activities that are predicted to exceed the vibration limits in CRL Condition 33. It shall be kept up to date for works in the CRL designation and should be used as good practice guide for works in the BTC designation. Activities that are predicted to have the potential to exceed the vibration limits include: •
Concrete breaking
•
Vibratory rolling
Table D3.3.1
8 9
Activity Detail (Vibration) ** indicative examples only**
#
Activity Details
Predicted Vibration Effects
1
Activity Period Duration Days Hours
Receiver: Location: Vibration level: Site Specific limits:
Concrete breaking Nov – Dec 2017 2 months Monday to Saturday 7am to 7pm
CPO Foundations of west façade >5mm/s PPV Building Damage: Line 2 of CRL condition 33 Heritage report 9
Mathews & Mathews Architects Ltd Chief Post Office (CPO) Building – Written Record, January 2017 Mathews & Mathews Architects Ltd Chief Post Office (CPO) Building – Written Record, January 2017, Section 5.0, P16
Heritage: Vibration effects:
Potential for cosmetic damage (e.g. cracking) of foyer mosaic tile work
2
Activity Period Duration Days Hours
Concrete breaking Apr – May 2018 2 months Monday to Saturday 7am to 7pm
Receiver: Location: Vibration level: Site Specific limits: Heritage: Vibration effects:
CPO Foundations of west façade >5mm/s PPV Building Damage: Line 2 of CRL condition 33 Heritage report 10 Potential for cosmetic damage (e.g. cracking) of foyer mosaic tile work
3
Activity Period Duration Days Hours
X X X X X
Receiver: Location: Vibration level: Site Specific limits: Heritage approval: Structural approval: Vibration effects:
X X X X X X X
The following table provides a summary of consultation and mitigation measures agreed with CPO Building representative(s) and/or relevant tenants relating to an activity in the table above. Table D3.3.2 #
Details
1
Receiver Date Name Phone Email CRL rep
Consultation and Mitigation **indicative examples only** Matters discussed Cooper and Company DD/MM/YY X X X X
Key Points: A. Board meetings between 9am and 10am on a Monday. B. Typical commercial hours are 9am to 5pm, Monday to Friday C. Project update requested every Friday Actions: A. Target weekday evenings (5pm and 7pm) and Saturdays if practicable. B. Communications Manger to liaise and provide monitoring results and notification of upcoming works. C. Install noise panels for all works. BPO Conclusion: This is believed to be BPO as it takes into account the needs of the stakeholder, and puts in place the best practicable mitigation measures of notification and noise panels.
10
Mathews & Mathews Architects Ltd Chief Post Office (CPO) Building – Written Record, January 2017, Section 5.0, P16
D4
Zurich House SSCNMP (21 Queen Street)
D4.1
Introduction
This Site Specific Construction Noise Management Plan (SSCNMP) is for Zurich House, located at 21 Queen Street. A SSCNMP is required for Zurich House because construction is predicted to exceed the Project Noise Standards in CRL Condition 31. This SSCNMP has been prepared in accordance with CRL Condition 37 and is Appendix D4 of the CRL Construction Noise and Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore, directly references relevant sections of the DWP to avoid repetition. The objective of this SSCNMP is to detail the best practicable option(s) to avoid, remedy or mitigate the identified adverse effects from noise exceedances at Zurich House. Section D4.2 identifies the noise sensitive spaces in Zurich House, the predicted or measured façade sound insulation performance, predicted noise effects and recommended consultation thresholds. As required under CRL Condition 37.5, Section D4.3 presents: (g) (h) (i) (j) (k) (l)
The extent to which noise may exceed the Project Noise Standards (refer Table D4.3.1); The timing and duration of any exceedance (refer Table D4.3.1); The type of activity causing any exceedance (refer Table D4.3.1); A summary of the communication and consultation with the receiver (refer Table D4.3.2); The methods and measures to mitigate noise effects (refer Table D4.3.2); and A statement of why they reflect best practicable option (refer Table D4.3.2).
This SSCNMP has been prepared by Marshall Day Acoustics Ltd for DSBJV and forms part of the Construction Environmental Management Plan (CEMP) for the Project.
D4.2
Zurich House Details
Pre Construction Consultation Zurich House is owned by Precinct Properties. The tenants are summarised in the table below. Level
Tennant
Business Activity
G
The Square Café
Café
L3
HRC
Government
L4
William Buck Christmas Gouwland
Accountant
L5
Western Union
Money transfer
L5
NZIA
Architect Association
L6
SFO
Government (interview room)
L7
NZX
Office (IPO listing events)
L8
Willis Towers Watson
Insurance
L9
WSP Parsons Brinkerhoff
Engineer
L10
Regus
Serviced offices with lots of partitioning
L11
GSK
Pharmaceuticals
L12
NZ Superfund
Superannuation
L14
CBRE
Real estate
Level
Tennant
Business Activity
L15, 16
NZ Funds
Wealth management
L16
Cranleigh
Corporate Finance & Advisory Firm
Zurich
Insurance
L16, 17
Rachel Purdy (DSBJV) and Craig Fitzgerald (Marshall Day Acoustics) met with Peter Bowden from Precinct Properties to discuss Zurich House on 10 March 2016. The matters discussed included the tenant profile, the general building layout, general noise sensitive spaces such as office and meeting rooms, and the identification of specific tenant sensitivities that require further investigation. In general, retail and common areas occupy the lower levels of Zurich House, with office space from levels 3 – 17. Each floor layout has a central services core and one or two tenancies. Each office tenancy has open plan areas and meeting rooms as part of a bespoke tenant fit-out. Activities that required further direct consultation with the tenants were the SFO recording of witness statements and NZX IPO listing events. Rachel Purdy and Craig Fitzgerald met with Mary Harris and Carol Palmer from SFO on 7 April 2016. The recording of witness statements is undertaken in a meeting room located in the centre of the building away from all façades. Furthermore, the activity is infrequent and uses mobile recording equipment that may be relocated to another site if required with advanced consultation. Rachel Purdy and Craig Fitzgerald met with Moira Howson from NZX on 22 February 2016. A supplied floor plan showing the proposed office layout in the near future was used as the basis for discussions. It envisaged a high density occupation with a call centre on the south façade overlooking Customs Street West (south). Three meeting rooms and the boardroom will remain on the east façade overlooking Queen Street. Two additional small meeting rooms will be centrally located, away from all façades. The boardroom is (and will continue to be) used for up to 10 special events per year (e.g. IPO listing announcement or seminar) which are particularly noise sensitive. Each event is generally 2 hours in duration, commencing at 11am or 5pm, and features a presentation to media or similar.
Façade Sound Insulation Performance The Zurich House façade is 6/15/10 curtain wall double glazing (6mm glass and 10mm glass, separated by a 15mm air cavity). This glazing system has a theoretical sound insulation performance of STC 36, controlled by the low frequency performance at about 160Hz. Assuming this performance of the façade glazing, the average noise level received in the general office areas and meeting rooms is predicted to be 29 – 36 decibels lower than the level predicted at 1m from the external façade (range reflects variation in noise sources and receiving rooms). A sound level difference of 30 decibels is a reasonable generic assumption. The predicted construction noise effects are summarised in the following table. External Level (dB LAeq)
Internal Level (dB LAeq) All Times
> 60 dB LAeq:
Difficulty holding a normal conversation and reduction in work efficiency
95
65
90
60
85
55
50 – 60 dB LAeq: Annoyance and reduction in work efficiency
80
50
75
45
< 50 LAeq:
Typically acceptable
NZX – Boardroom IPO Listing Events For boardroom IPO listing events, the predicted construction noise effects are summarised in the following table. The overlapping zones reflect the range of sensitivities in conference room activities. External Level (dB LAeq)
Internal Level (dB LAeq) All Times
95
65
90
60
> 50 – 60 dB LAeq: Potential degradation of communication quality
85
55
45 – 60 dB LAeq:
80
50
Annoyance for some occupants
75
45
< 45 – 50 LAeq:
Typically acceptable
70
40
65
35
SFO – Recording of Witness Statements The recording of witness statements is undertaken in a meeting room located in the centre of the building away from all façades. Furthermore, the activity is infrequent and uses mobile recording equipment that can be relocated to another site if required, with a reliance on advanced communication and consultation. Based on preliminary estimates, the airborne noise level received in this meeting room is predicted to be at least 50 decibels lower than the level predicted at 1m from the external façade. The predicted construction noise effects are summarised in the following table. The overlapping zones reflect the range of effects that noise may have on recording witness statements. External Level (dB LAeq)
Internal Level (dB LAeq) All Times
95
45
90
40
85
35
> 45 – 50 dB LAeq: Potential degradation of statement recordings 40 – 50 dB LAeq:
Potential distraction and background noise on statement recordings
< 40 – 45 LAeq:
Typically acceptable
Consultation Trigger Level In addition to regular communication, specific consultation should be undertaken with Precinct and relevant tenants prior to construction works that are predicted to exceed 80 dB LAeq at the façade of Zurich House. The consultation process is set out in Section 8.3 of the CNV DWP.
D4.3
Activity Detail and Consultation
The following table provides details of activities that are predicted to exceed the noise limits in CRL Condition 31 and the predicted noise effects. It shall be kept up to date. Activities that are predicted to exceed the noise limit include: •
Concrete cutting and breaking
•
External secant piling works
Table D4.3.1
Activity Detail (Noise)
#
Activity Details
Predicted Noise Effects and Consultation
N1
Activity
Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Period Duration Days Hours N2
Activity Period Duration Days Hours
N3
N4
Activity Period Duration Days Hours
Activity Period Duration Days Hours
Concrete cutting & breaking, handheld/ 5T excavator May – July 2017 3 months Monday to Saturday 7am to 7pm Concrete cutting / breaking Nov – Dec 2017 2 months Monday to Saturday 7am to 7pm
Secant piling Jan 2018 – Mar 2018 3 months Monday to Saturday 7am to 7pm
Concrete cutting / breaking Apr - May 2018 2 months Monday to Saturday 7am to 7pm
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects: Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Engagement Level:
Level G-9 tenancies NE corner of the building 75 – 83 dB LAeq 29 decibels sound level difference 46 – 54 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation Level G-9 tenancies NE corner of the building 75 – 88 dB LAeq 29 decibels sound level difference 46 – 59 dB LAeq Typically acceptable for short periods with advanced notice. Potential to cause annoyance and reduction in work efficiency. Consultation Level G-9 tenancies NE corner of the building 75 – 80 dB LAeq 29 decibels sound level difference 46 – 51 dB LAeq Typically acceptable for short periods with advanced notice. Communication Level G-9 tenancies NE corner of the building 75 – 88 dB LAeq 29 decibels sound level difference 46 – 59 dB LAeq Typically acceptable for short periods with advanced notice. Potential to cause annoyance and reduction in work efficiency. Consultation
The following table provides a summary of consultation and mitigation measures agreed with Zurich House owners and/or tenants representatives relating to an activity in the table above. Table D4.3.2 #
Details
N1
Receiver Date Name Phone Email CRL rep
Consultation **indicative examples only** Matters discussed Level G-9 tenancies, NE corner DD/MM/YY X X X Brandy Smith
Key Points: A. Board meetings between 9am and 10am on a Monday. B. Typical commercial hours are 9am to 5pm, Monday to Friday C. Project update requested every Friday Actions: A. Target weekday evenings (5pm and 7pm) and Saturdays if practicable. B. Communications Manger to liaise and provide monitoring results and notification of upcoming works.
C. Install noise panels for all works. BPO Conclusion: This is believed to be BPO as it takes into account the needs of the stakeholder, and puts in place the best practicable mitigation measures of notification and noise panels.
D5
Hotel Mercure SSCNMP (8 Customs Street East)
D5.1
Introduction
This Site Specific Construction Noise Management Plan (SSCNMP) is for Hotel Mercure, located at 8 Custom Street East. A SSCNMP is required for Hotel Mercure because construction is predicted to exceed the Project Noise Standards in CRL Condition 31. This SSCNMP has been prepared in accordance with CRL Condition 37 and is Appendix D5 of the CRL Construction Noise and Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore, directly references relevant sections of the DWP to avoid repetition. The objective of this SSCNMP is to detail the best practicable option(s) to avoid, remedy or mitigate the identified adverse effects from noise exceedances at Hotel Mercure. Section D5.2 identifies the noise sensitive spaces in Hotel Mercure, the predicted or measured faรงade sound insulation performance, predicted noise effects and recommended consultation thresholds. As required under CRL Condition 37.5, Section D5.3 presents: (m) (n) (o) (p) (q) (r)
The extent to which noise may exceed the Project Noise Standards (refer Table D5.3.1); The timing and duration of any exceedance (refer Table D5.3.1); The type of activity causing any exceedance (refer Table D5.3.1); A summary of the communication and consultation with the receiver (refer Table D5.3.2); The methods and measures to mitigate noise effects (refer Table D5.3.2); and A statement of why they reflect best practicable option (refer Table D5.3.2).
This SSCNMP has been prepared by Marshall Day Acoustics Ltd for DSBJV and forms part of the Construction Environmental Management Plan (CEMP) for the Project.
D5.2
Hotel Mercure Details
Pre Construction Consultation Dean Ingoe (Auckland Transport) and Craig Fitzgerald (Marshall Day Acoustics) met with Ian Shipman and Shane Edwards (Hotel Mercure) to discuss the Hotel Mercure BTC NoR submission on 9 November 2015. The matters discussed and the noise measurements undertaken in representative noise sensitive spaces were summarised in Marshall Day Acoustics letter Lt004 (12 November 2015), which was supplied to Hotel Mercure. The findings of that letter are summarised in this SSCNMP. Subsequent further concerns and questions from Shane Edwards (email 19 November 2015) were responded to by Dean Ingoe (email 30 November 2015). The representative noise sensitive spaces identified were the level 1 conference room and hotel rooms 207 and 612. The following sub sections summarise Hotel Mercure operations, the measured faรงade sound insulation performance and the recommended consultation trigger levels.
Conference Rooms The conference rooms are flexible spaces that often accommodate a range of activities on a day to day basis. Activities may include didactic presentations (e.g. keynote speaker addressing a room of delegates), group meetings, trade shows or hospitality events (e.g. awards evening). The acoustic sensitivity varies markedly depending on the activity type, use of amplification systems and background noise level. For example, a low background noise environment (with less construction noise) would be preferred for unamplified formal presentation, while a lively background noise
environment (allowing more construction noise) would be acceptable for a social event or trade show. The Hotel Mercure conference room is located in the northwest corner of level 1, with glazed façades facing both Queen Street and Galway Street. The glazing is estimated to be monolithic glass at least 10mm thick, with a theoretical sound insulation performance of STC 35. Based on site measurements, the average noise level received in the conference is predicted to be 30 decibels lower than the level predicted at 1m from the external façade. The predicted construction noise effects are summarised in the following table. The overlapping zones reflect the range of potential acoustically sensitive conference room activities. External Level (dB LAeq)
Internal Level (dB LAeq) All Times
95
65
90
60
> 50 – 60 dB LAeq: Potential degradation of communication quality
85
55
45 – 60 dB LAeq:
80
50
Annoyance for some occupants
75
45
< 45 – 50 LAeq:
Typically acceptable
70
40
65
35
Hotel Rooms The Hotel Mercure is progressively refurbishing all hotel rooms, with a completion date of November 2016. All hotel rooms are fully air conditioned for thermal comfort. It is understood works include replacement of the existing secondary glazing system (estimated to be 6/100/6.38) with 8.5mm hush glass (or similar). Both glazing systems are predicted to provide a theoretical sound insulation performance of at least STC 35. Based on site measurements, the average noise level received in the hotel rooms is predicted to be 30 decibels lower than the level predicted at 1m from the external façade. The predicted construction noise effects are summarised in the following table. External Level (dB LAeq)
Internal Level (dB LAeq) Day
Night
95
65
65
90
60
60
85
55
55
80
50
50
75
45
45
70
40
40
65
35
35
Day
Night
> 60 dB LAeq:
Difficulty holding a normal conversation and reduction in work efficiency 50 – 60 dB LAeq: Annoyance and reduction in work efficiency Typically acceptable < 50 LAeq: > 40 dB LAeq: Annoyance and sleep disturbance for most noise sensitive receivers 35 – 40 dB LAeq: Annoyance and sleep disturbance for some noise sensitive receivers Typically acceptable < 35 LAeq:
Consultation Trigger Level In addition to regular communication, specific consultation should be undertaken with Hotel Mercure prior to construction works that are predicted to exceed 80 dB LAeq at the façade of the
conference room or any hotel room. The consultation process is set out in Section 8.3 of the CNV DWP.
D5.3
Activity Detail and Consultation
The following table provides details of activities that are predicted to exceed the noise limits in CRL Condition 31 and the predicted noise effects. It shall be kept up to date. Activities that are predicted to exceed the noise limit include: •
Concrete cutting and breaking
•
External secant piling works
Table D5.3.1
Activity Detail (Noise)
#
Activity Details
Predicted Noise Effects
1
Activity
Concrete cutting / breaking Nov – Dec 2017 2 months Monday to Saturday 7am to 7pm
Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Concrete cutting / breaking April - May 2018 2 months Monday to Saturday 7am to 7pm
Engagement Level: Receiver: Location: External noise level: Façade performance: Internal noise level: Noise effects:
Period Duration Days Hours
2
Activity Period Duration Days Hours
Engagement Level:
Conference Rooms / Hotel Rooms L1-5 Northwest corner of the building 75 – 83 dB LAeq 30 decibels sound level difference 45 – 53 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation Conference Rooms / Hotel Rooms L1-5 Northwest corner of the building 75 – 83 dB LAeq 30 decibels sound level difference 45 – 53 dB LAeq Typically acceptable for short periods with advanced notice. May cause some disruption. Consultation
The following table provides a summary of consultation and mitigation measures agreed with Hotel Mercure representatives relating to an activity in the table above. Table D5.3.2 #
Details
1
Receiver Date Name Phone Email CRL rep
Consultation **indicative examples only** Matters discussed Mercure Hotel and Conference Rooms DD/MM/YY X X X X
Key Points: A. Board meetings between 9am and 10am on a Monday. B. Typical commercial hours are 9am to 5pm, Monday to Friday C. Project update requested every Friday Actions: A. Target weekday evenings (5pm and 7pm) and Saturdays if practicable. B. Communications Manger to liaise and provide monitoring results and notification of upcoming works. C. Install noise panels for all works. BPO Conclusion: This is believed to be BPO as it takes into account the needs of the stakeholder, and puts in place the best practicable mitigation measures of notification and noise panels.
Appendix E:
Communication and Consultation Records
•
Communications – Refer stakeholder communication register
•
Consultation – Refer bi-monthly stakeholder meeting minutes
Appendix F: F1
CLG and Independent Peer Review Comments
Community Liaison Group Comments
Comments received from the CLG are as follows: Date
CLG Member
Comment
Response
8th December 2015
Tim Coffey
As a heritage building, will residents of the Endeans building be told what they can expect with respect to construction noise and vibration?
Engagement is underway with residents and businesses within and adjacent to the Project area (refer to the Social Impact and Business Disruption DWP) and will continue throughout the Project. Tenants will be informed of construction works and timeframes for noisy activities so they can plan accordingly. Communication procedures are outlined in Section 6.1 of the DWP, Section 5.3 of the CEMP and the Project Communication and Consultation Plan. No change required to DWP.
8th December 2015
Tim Coffey
First point of contact for noise complaints – Auckland Council noise control or Project 0800 number?
The Project hotline (0800 CRL TALK) is the preferred first point of contact but anyone can ring noise control at any stage during the Project if they wish. Auckland Council noise control will be provided with the relevant project contacts with respect to any noise complaints. No change required to DWP.
8th December 2015
Ross Boswell
Noise can be unobtrusive at street level but obtrusive at higher levels
This is acknowledged and mitigation will be implemented as appropriate. Hoardings will benefit ground level tenants (Section 5.5 of the DWP) but will be of less benefit to upper level tenants – these tenants will be advised to close windows to reduce noise etc. No change required to DWP.
8th December 2015
Ross Boswell
No Site Specific Construction Noise Plan to be prepared for 152 Quay Street?
Initial noise modelling has been undertaken for each stage of the construction works (refer Appendix B of the DWP) and provides an estimate of noise levels for buildings adjacent to the Project area during construction. The modelling indicates that works in Lower Queen Street (Stage 3) will likely generate the most
Date
CLG Member
Comment
Response noise due to activities such as piling and concrete cutting. The building at 152 Quay Street does not have direct line of sight to Lower Queen Street and modelling indicates that estimated construction noise levels that are predicated to be received at 152 Quay Street will be within the Project noise standards. Noise can be appropriately mitigated through measures outlined in the CNV DWP and no Site Specific Construction Noise Plan is required for this building.
14th April 2016
Cooper and Company
Section 1.1 refers to the objective as being to “provide for the development and implementation of the identified best practicable option to avoid, remedy or mitigate the adverse effects”. However condition 28.2 refers to the “best practicable options” – should be amended for consistency. Refers to project construction noise and performance standards that must “as far as practicable” be complied with – why is this qualified? The site specific plans are in place to cover where they cannot comply so I am not sure why it is necessary to qualify/water down this statement. I suggest deleting this qualifier.
The two terms are used interchangeably in the BTC conditions and vary between the BTC and CRL designation conditions. This is a drafting issue rather than a technical issue and doesn’t materially affect the content of the DWP – no change required. A site specific plan would be prepared for exceedances of the Project noise and/or vibration standards in accordance with CRL designation Conditions 37 and 38. However, where practicable, compliance with the Project noise and vibration standards should still be the primary goal during construction. It is considered that removing the qualifier would water down this requirement.
14th April 2016
Cooper and Company
Section 1.4 Notes that any material changes to the DWP will require approval from Council. However it should also note that any material changes also need to be notified to the CLG under condition 8.7.
Section 9 updated to reflect notification to the CLG of any material changes to the DWP.
14th April 2016
Cooper and Company
Table 2.2 Three of the six key personnel are “TBC”. Any update? When can we expect to have these details?
As discussed at the meeting on 15 April, these personnel are not yet confirmed. Names and contact details will be included in the DWP prior to the commencement of construction.
14th April 2016
Cooper and Company
Section 3.2.1 says line 1 applies to CPO except features listed in BTC condition 26.3.
Section 3.2.1 updated to reflect that Line 2 of the DIN standard applies to the CPO’s masonary façade.
Date
CLG Member
Comment
Response
Condition 26.3 doesn’t list features it states the masonry façade. Might be clearer to refer to this. 14th April 2016
Cooper and Company
Section 5.2 Refers to no vibratory rolling and concrete breaking at night – condition 28.2 refers to no vibratory rolling and rock breaking – should use consistent terminology. This section also doesn’t include any reference to the restriction in condition 28.3(d) which imposes a restriction on the use of sheet piling and vibratory rolling unless it can be demonstrated that any material damage to the CPO will be avoided – it should include this qualification.
The equipment is generically referred to as a ‘rock breaker’, however it will be used to break concrete. Therefore, the activity of interest is concrete breaking. There is no rock to break on this site. Reference to the relevant activity (concrete breaking) is considered to be more useful and clear to the contractors on site. The remaining reference to rock breaking in Section 7.3 has also been updated to concrete breaking for consistency. The requirements of BTC condition 28.3 (d) are best addressed in Section 7.3. Bullet point two has been expanded to make this explicit.
14th April 2016
Cooper and Company
Section 7.5.1 - These are the measures to be implemented where measured construction noise exceeds the project standards. None of the measures involve stopping work until the noise is back in compliance. This contrasts with the approach to construction vibration exceedances and the approaches in other DWPs such as air quality where work is stopped until compliance is able to be achieved. Why is construction noise treated differently?
The consequence of a noise exceedance is not as significant as it could be for vibration, which has potential for material damage to the building and safety concerns for its occupants. Construction noise levels are inherently variable and brief exceedances are common for construction projects being undertaken in urban areas. The primary amenity effect is annoyance, which is highly subjective and dependent upon the receiving environment. An exceedance does not always translate into an effect, and therefore, immediate cessation would be an onerous unilateral requirement. The real time web monitoring to be implemented during the Project (outlined in Section 7.1 of this DWP) will ensure that any exceedance is identified quickly, an investigation undertaken to ensure BPO is applied and a SSCNMP prepared if required. This approach is commensurate with the potential effects. It is also noted that Section 6.2 may require the cessation of works in response to a sleep disturbance complaint.
Date
CLG Member
Comment
Response
14th April 2016
Cooper and Company
Section 7.5.2 says work is to stop as soon as practicable if exceedance occurs but that if damage has not occurred then the activity can be continued provided the vibration level is not exceeded further. In other words AT can continue to exceed to the same level. This doesn’t appear to be consistent with the conditions.
The vibration limits may be exceeded in accordance with BTC designation condition 26.5, provided the BPO in the CNV DWP is implemented and Conditions 28.3 (i) and 28.3(p) are complied with.
18th May 2016
Cooper and Company
Table 2.2 Key personnel numbers are TBC. Understand that these will be finalised prior to commencement, however a chart showing who is responsible for what and their contact details would be really useful once one is available.
Once a key personal contact chart / full listed is developed with their contact details it will be provided to Cooper and Company. No amendments to the DWP required.
18th May 2016
Cooper and Company
Section 7.6 has a typo “amalgam of those buildings required to be surveyed”.
Section 7.6 text updated to correct typo.
18th May 2016
Cooper and Company
Section 9.1 has a typo “reflectmaterial” – need to insert space.
Section 9.1 text updated to correct typo.
F2
Independent Peer Review Comments An Independent Peer Review of the draft CNV DWP was undertaken by Dr Stephen Chiles, from Chiles Limited, with peer review comments received on 4th February 2016. The comments received are as follows:
•
Section of DWP 11
Comment
Response
1.1
Reference is made to CRL and BTC designations but it isn’t clear how these each relate to the site.
Labels have been added to Figure 1.1 and a comment added to Section 1.1 to acknowledge that the noise and vibration requirements are generally aligned across the two CRL and BTC designations.
1.1
The split of content between the CEMP, CNV DWP and other DWPs is not clear in the introduction.
No change. The last paragraph of Section 1.1 identifies the position of this CNV DWP in the wider CEMP framework.
1.2
It is difficult to navigate the two sets of conditions and the length is excessive.
No change. AT standard DWP layout and format.
1.4
All SSCNMPs and SSCVMPs require peer review - add reference to peer review process for site specific plans.
No change. The formal review process in Section 9 is referenced at the end of the first paragraph.
2.4
There should be a single person identified who is responsible for the CNV DWP: • Explicitly identify a person in Table 2.2 who is responsible for implementation of the CNV DWP. • Add details to table 2.2 of specialist noise and vibration advisors and also trained noise and vibration monitoring staff. • Add details to table 2.2 of contacts at Auckland Council for approvals, and for noise and vibration. • Add a summary of qualifications and experience of the person who prepared the CNV DWP.
Section 2.4 updated as follows: • New role: ‘Noise and Vibration Monitoring Manager’ added, but details still to be confirmed. This would be the person who will receive alerts when pre-set warning levels or limits are exceeded. • Specialist noise and vibration advisor details added. • Auckland Council ‘Consent Monitoring officer’ added, but details still to be confirmed • Qualifications and experience of the CNV DWP author added.
3
Tables 3.1, 3.2 and 3.3 list different types of receivers. A function of the CNV DWP should be to identify specific receivers.
Figure 3.1 added to identify receiver (noise) and building types (vibration). There are no Notable Receivers, however the Serious Fraud Office (SFO) meeting rooms are used for the recording of witness statements infrequently.
3.2
Add explanations of where criteria have been modified from BTC conditions.
No change. Not applicable to the CNV DWP. Where the criteria have been modified, it is captured in the relevant SSCNVMP’s in Appendix D.
4.1
The CNV DWP does not identify all specific equipment and sound levels. Appendix B includes generic equipment. Monitoring in section 7.1 and updating of the list is limited to ‘high noise equipment’:
No change. Appendix B and C includes representative generic equipment proposed for C1 construction activities. Section 7.1 includes a feedback mechanism to ensure Appendix B is updated and remains representative. Section 7.1 applies to ‘high noise equipment’, which is an inclusive list. It states: “During the first external use
11
CNV DWP Revision 3
Section of DWP 11
Comment
Response of high noise equipment, including concrete cutting, diaphragm wall rig, vibro sheet piling rig, other phases of construction that may exceed the relevant standards, or in response to a reasonable noise complaint being received�. This is considered to be a suitable approach.
4.1
A process for assessing sound levels is outlined but there is no specificity over how this will occur.
Section 4.1 paragraph 2 reworded and expanded. Also links to Section 7.1, which outlines the process for monitoring noise levels.
4.1
SSCNMPs should relate to specific activities as well as specific sites.
This is addressed in Appendix D. Reference added.
4.2
A process for assessing vibration is outlined but there is no specificity over how this will occur.
Added a link to the monitoring process in Section 7.2
4.2
SSCVMPs should relate to specific activities as well as specific sites. Where a SSCVMP relates to the same site and activity as a SSCNMP there should be a SSCNVMP.
This is addressed in Appendix D; link added.
5.2
Identify specific residential and commercial buildings referencing figures in Section 3.
Refer Section 3.3, added in response to comments on Section 3.
5.2
Due to the proximity of both residential and commercial buildings it isn’t clear where day/night preferences will overlap.
Conflict and preferences noted.
5.4
List any specific equipment that is not able to use mains power.
No change. The requirement is an inclusive principal, rather than exclusive list.
5.4
Broadband alarms should be used on all equipment.
No change. Tonal alarms are prohibited.
5.5
Mitigation with barriers/screens lacks specificity.
No change. Section 5.5 provides principals to ensure the application of barriers and enclosures is effective. The location of barriers and enclosures will change on a daily or even hourly basis. Therefore, a figure would quickly be out of date, add little value, just time/cost.
6.2
In some instances complaints might relate to building damage being caused or excessive sleep disturbance. Such issues need to be addressed quickly, rather than first waiting for measurements and investigations over 24 hours.
A process has been added in response to a reasonable complaint relating to building damage or sleep disturbance.
7.1, 7.2
Add summary of key requirements from NZS 6803 and DIN 4150-3.
No change. Attended noise and vibration measurements are required to be undertaken by a suitably qualified and experienced specialist who would be familiar with these standards.
7.1, 7.2
Add details of the noise and vibration monitoring equipment to be kept on
New Section 7.1 added to describe real time noise and vibration web monitoring approach
Section of DWP 11
Comment
Response
site (or otherwise), and cross reference section 2.4 for trained staff. 7.1, 7.2
Add requirement for periodic/regular noise and vibration monitoring. Identify locations for periodic monitoring on a figure.
New Section 7.1 added to describe real time noise and vibration web monitoring approach
7.1
Expand noise measurements to include all significant equipment.
No change. Section 7.2 (in Rev 5 of the DWP) bullet point two, provides a list of the minimum attended monitoring. It is an inclusive list that can expand as required. It represents all significant equipment anticipated.
7.1
For steady sound measurement durations less than 10 minutes are often appropriate.
Section 7.2 (in Rev 5 of the DWP) bullet point four updated.
7.1
Consideration could be given to use of continuous noise monitoring stations with remote access and alarms.
New Section 7.1 added to describe real time noise and vibration web monitoring approach
7.2
Adjust so that measurements of ppv are continuous and not for one second intervals.
Updated to require contiguous one second intervals.
7.2
BTC condition 28.3(l)(ii) requires specific trials - add details of trials in CPO basement.
Understand this relates to BTC condition 28.3 (p) in the current set. BTC Appendix 3 has been added to Appendix C. Any deviation to the conditions would be captured in the CPO SSCVMP in Appendix D.
7.4.1
Add a process for ceasing work.
Process for ceasing work added to Section 6.2 instead.
7.5
Identify the person responsible for condition surveys and included them in section 2.4.
Refer CEMP and Built Heritage DWP for details
7.5
Identify buildings to be surveyed on a figure.
Buildings in Appendix 1of BTC Conditions listed. Refer Section 3.3 for figure identifying location.
8
The process for assessing significance of effects needs to relate to other processes in the CNV DWP.
No change. Sections 4-7 establish determine if there are affected parties. Section 8 provides the process for assessing significance of effects, which is documented in the relevant SSCNVMPs.
8
Add process for rectifying any damage found through condition surveys.
No change. The last paragraph of Section 7.6 of Rev 5 of the DWP refers to Condition 31.4, which sets out rectifying damage found through condition surveys.
9
The review process needs to be clear that all SSCNMPs/SSCVMPs and material changes to the CNV DWP require peer review.
No change. Refer paragraph two of Section 9.
Appendix D
SSCNMPs and SSCVMPs need to include a section on specific mitigation to be implemented.
The SSCNMPs and SSCVMPs will be updated following confirmation of the construction methodology and consultation with the affected parties.
A further Independent Peer Review of the draft CNV DWP was undertaken by Dr Stephen Chiles to review the amendments made to this DWP as a result of Auckland Transport’s confirmation of the altered BTC designation conditions. A second round of peer review comments was received on 11th May 2016. The comments received are as follows:
•
Section of DWP 12
Comment
Response
Appendix F
The CNV DWP records the previous review comments made on revision 3. The CNV DWP authors have not acted on all recommendations. Those matters are not repeated in the following comments on revision 6. The reviewer notes general disagreement with the responses given by the authors with respect to those points.
Previous matters discussed in a telephone conversation between Stephen Chiles and Craig Fitzgerald on 16 May 2016. Many of the matters discussed were high level and largely inconsequential, typically related to improving cross referencing or clarifying responsibility, with a view to improving specificity. As a result the following further changes have been made: • Section 1.1 updated to reference the relevant section of the CEMP (Appendix F) where the CNV DWP is located. • Section 4.1 and 4.2 text updated to clarify that the Noise & Vibration Monitoring Manager will be responsible for predicting construction noise and vibration. Note Section 7.2 and 7.3 require a Specialist Noise & Vibration Advisor to measure the first occurrence of activities that generate high noise and/or vibration levels. • Section 5.4: Are Vector allowing access to the power grid? Discussions with Vector regarding the opportunity to utilise power from the national grid in preference to generators where practicable are still ongoing. • Section 5.5 text has been updated to provide further detail of noise barriers (e.g. perimeter site hoardings and local screening). • Sections 7.2 and 7.3: Expanded monitoring feedback loops to specifically include Appendices B and C.
1.2
Remove the strikethrough on BTC 26.2 in Table 1.1.
Drafting error, condition reinstated.
3.2.1
The third category in Table 3.2 is subtly different in the CRL and BTC designations (BTC has been used in the table). Add note that building definitions are not in full accordance with CRL designation.
Footnote added as suggested.
3.2.2
Table 3.3 appears to include additional criteria to the designation conditions.
Understand this refers to the addition of a reradiated noise criterion in occupied commercial or retail spaces of 55 dB LAeq 15 min. The criterion has been
12
CNV DWP Revision 6
Comment
Response
It should be noted which criteria in Table 3.3 relate to the designation conditions and which are additional.
removed and would be determined on case by case basis where the vibration criterion is exceeded.
3.3
Despite footnote 2, Table 3.4 appears to categorise building types for vibration (building damage rather than amenity) on the basis of use rather than structural/architectural design. DIN 4150 categories specify use as a proxy for structural/architectural design. Building types in Table 3.4 should be reviewed by a structural engineer for buildings B, G and H.
A conservative position has been taken for buildings B, G and H until such time that a structural engineer determines that a higher level of vibration is acceptable.
5.2
The reference to concrete breaking in the third bullet point should also include rock breaking.
There is no rock breaking in the programme, only concrete breaking. Previous references to a ‘rock breaker’ refer to the equipment rather than activity. The two terms have been used interchangeably.
5.5
Specific provision should be made to address BTC 28.3(g)
Note added to Section 5.5 to address BTC designation condition 28.3(g).
7
Specific provision should be made to address BTC 28.3(p)
BTC Appendix 3 has been added to Appendix C. Any deviation to the conditions, and the requirements of BTC designation condition 26.3 (p) (ii) specifically, would be captured in the CPO SSCVMP in Appendix D.
7.3
Second bullet point should retain rock breaking as well as concrete breaking.
Refer response to item 5.2 above.
7.3
Monitoring positions should include the CPOs highest floor in accordance with BTC 26.3
Added notation to bullet 3 of Section 7.3 requiring monitoring measurement to be undertaken on the CPO’s highest floor level in accordance with BTC designation condition 26.3.
7.6
Specific provision should be made to address BTC 28.3(q)
Additional paragraph added to Section 7.6 to address BTC designation condition 28.3(g) as suggested.
Section of DWP 12
An Independent Peer Review of the draft SSCNVMPs (Appendix D of this CNV DWP) was also undertaken by Dr Stephen Chiles, with peer review comments received on 25th May 2016. The comments received are as follows:
•
Section of DWP 13
Comment
Response
Appendix D
I have reviewed the draft SSCNVMPs. In general they follow an appropriate format and contain the required details. I have three comments:
Noted
Appendix D
The summary of consultation table in each SSCNVMP contains actions and mitigation measures. This suggests that
Consultation and mitigation are now addressed in separate tables as suggested.
13
Supplied as a standalone document titled CRL C1 SSCNVMPs Rev 3 (MDA Draft 160524)
Section of DWP 13
Comment
Response
mitigation is only assessed/applied if a specific concern is raised during consultation. I recommend splitting this table so that mitigation measures are in a separate table from the summary of consultation. The summary of consultation can then cross reference the mitigation if needed. Appendix D
For receivers that are also subject to noise and vibration effects from work in the other contract area (e.g. Zurich House?) there should be at a minimum acknowledgement of that situation and ideally linking of SSCNVMPs prepared under each contract. While for the contractors and their consultants it is simplest to compartmentalise different works, for the receivers they will be affected by the combined noise and vibration exposure.
It is acknowledged that other construction works will be occurring in proximity of the CRL Contract 1 works and that monitoring and management measures will be needed to ensure that the responsible party addresses the effect. This situation is most likely for sensitive receivers in Zurich House and HSBC House in relation to the Precinct Properties redevelopment of the Downtown Shopping Centre.
Appendix D
The designation conditions 37.5(d) and 38.5(d) require the peer review to look at specific measures being adopted or not. Currently these measures are only included as indicative examples. While it is understood there currently is not enough information for this detail to be provided for all construction activities, perhaps further work can be done on activities expected in the first few months so that measures specifically relating to those can be reviewed, demonstrating that the overall system has been reviewed.
It is acknowledged that the indicative examples included in the SSCNVMPs are only placeholders to demonstrate the proposed framework of the plans. These will be updated in the future once the construction methodology is known/confirmed.
Appendix G: •
Register of Plan Updates
Annual Review Updates
Date
Updates have been made to the following sections: • Section 2.1/7.2/7.3 – change from sheet piling to secant piling • Section 2.2 – Table 2.1 updated to reflect current project programme • Section 2.4 – Table 2.2 updated to reflect current staff, and contact details • Section 3.4 – Table 3.4 removed reference to specific business names, as some have changed • Section 7.3 – reference to plate compactor added in relation to attended monitoring following vibration alert that was triggered for this activity in Tyler Street • Section 8.1.1 – update to text relating to façade performance following actual measurements • Section 10 – new section added to the DWP which identifies the project-specific documents that need to be created to support the processes described in this plan • Appendix B – change to noise level, set back distance for the D wall rig following actual onsite measurements • Appendix C – removed vibro sheet piling from activities • Appendix D – update to all SSCNVMPs following confirmation on construction method details, primarily focussed on updates to the noise effects of the proposed activities, and consultation/mitigation proposed. • Appendix E – updated to cross-reference key communication/consultation records, removed repetitive information.
September 2017
Updates have been made to the following sections: • Table 2.1 construction methodology update to program dates • Table 2.2 deleted key personnel no longer on the project team • Table 3.4 amendment to note 5 to reflect Downtown demolition is now complete • Appendix D2 addition of secant piling to activities predicted to exceed the vibration limits • Various sections to change reference from Auckland Transport to City Rail Link Limited where appropriate.
December 2018