Mt Eden Station and Public Realm Reinstatement
Construction Noise and Vibration Management Plan Addendum
CRL-MTE-RME-LKA-RPT-800010
Revision: A02
Date: 08/02/22
Mt Eden Station and Public Realm Reinstatement – Construction Noise and Vibration Management Plan Addendum
CRL-MTE-RME-LKA-RPT-800010
This document is uncontrolled when printed. This document should be printed in colour
Revision Status
Revision
A01 16/11/2021 Final for Council lodgement Micky Yang Craig Fitzgerald
A02 08/02/2022 Updated following Councils review Micky Yang Craig Fitzgerald
Approval Status
Prepared by: Micky Yang Acoustic Consultant 08/02/2022
Reviewed by: Alexandra Scouller Link Alliance - Planner 08/02/2022
Approved by: Peter Roan Link Alliance – Consents Manager 08/02/2022
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 (NAL) in the vicinity of Mt Eden Station. The CRL also involves the construction of two new underground stations at Aotea and Karangahape and the redevelopment of the station at Mt Eden (refer to Figure 1.1). The design and construction of the CRL infrastructure between the Aotea and Mt Eden Stations is being delivered by the Link Alliance.
1.1 CRL Route and Location
This addendum to the Mt Eden Main Works Construction Noise and Vibration Delivery Work Plan (CNV DWP)1 has been prepared to address any potential effects associated with the public realm reinstatement works (PRR) phase of construction works that were not covered in the original Mt Eden CNV DWP.
This addendum should be read in conjunction with the Mt Eden Main Works CNV DWP. Where project details, proposed management and effects are already covered in the Mt Eden Main Works CNV DWP and are directly applicable to the PRR works, reference is made to the appropriate section of the Mt Eden Station Main Works CNV DWP.
2. Project Description
This section presents a summary of the PRR works to provide context to the CNV DWP Addendum. A detailed description of the PRR works is provided in the Mt Eden Station PRR Construction Environmental Management Plan (CEMP) Addendum. Further detail on the PRR works is also provided in the Mt Eden Station Urban Design Delivery Work Plan (Urban Design DWP).
1 Mt Eden Main Works Construction Noise and Vibration Delivery Work Plan, Rev 001C, prepared by the Link Alliance, dated 8 December 2020.
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2.1 Construction Methodology Overview
The extent of the PRR works is shown in Figure 2.1 and includes the Mt Eden Precinct and eastern and western facing connections. An oversite development (OSD) masterplan has been developed for the CRL construction site at Mt Eden which is expected to be delivered by Eke Panuku after the works being undertaken by Link Alliance have been completed. The scope of the works being delivered by the Link Alliance, excludes the OSD area (shaded white in Figure 2.1).
The construction works required to reinstate the permanent aspects of the public space include paving, sealing, tie-in works, stormwater treatment, the installation of street furniture and landscaping. The works will be undertaken in a staged manner as the current construction works are progressively completed. Refer to the CEMP Addendum for a further detailed description of the works.
The PRR works are divided into ‘stages’ (based on activity for the Mt Eden Precinct, and locations for the NAL area) as illustrated in Table 2.1.
Table 2.1. Overview of Construction Works and Staging
Stage/Location
North Auckland Line
Stage 1
Boston Road/Nugent Street/Normanby Road
(East facing connection)
Services installation, road reinstatement and landscaping Jan 2022 120 days
Stage/Location
Stage 2
Fenton Street/Wynyard Street (West facing connection)
Mt Eden Precinct
Stage 3A
Drainage
Stage 3B and 3E
Roading works
Stage 3C Utility works
Footpath/road reinstatement and landscaping
Drainage works along the roads connecting to existing stormwater network
Road pavement, footpath, road furniture and road signals
like LV line for lighting and fiber
Stage 3D Streetscape Landscaping, paving and way finding installation
2.1 Hours of Work
Construction hours will be as per those outlined in Section 2.5 of the Main Works CEMP. Works will generally be undertaken Monday to Saturday, 0700 – 1900 hrs. However, certain activities may need to be undertaken outside these hours to minimise traffic impacts or minimise disruption to businesses or residents, such as network utility works where the Network Utility Operator (NUO) requires works to be undertaken at night, or the delivery of large plant.
To maintain pedestrian access to business and properties, night works may be required for the installation of pavers. Night works shall be limited to the placing of pre-cut pavers. Cutting of pavers shall be undertaken during daytime construction hours.
3. Key Personal
The key personal for the PRR works remain unchanged as the main works. Refer Section 3 of the CNV DWP.
4. Performance Standards
Section 4 of the CNV DWP provides the performance standards.
5. Receivers and Building Types
Section 5 of the CNV DWP provides the key receivers and their associated building types.
6. Risk Assessment – Noise
Section 6.1 of the CNV DWP includes the representative construction plant proposed for the PRR works. However, there are two plants that are not listed in Table 6-1 of the CNV DWP. A grader and asphalt paver has been identified as a potential equipment which is not captured in the CNV DWP These sources have a similar sound power level and noise character to a static/vibratory roller. Both a grader and paver will be used for road forming in the same locations as a drum roller. Therefore, the envelope of effects is unchanged and there is no substantive change required to the CNV DWP. As such, Table 6-1 can be used to predict activity noise levels. Potential noise effects from works are summarised in Section 12.1.
7. Risk Assessment – Vibration
Section 7.1 of the CNV DWP includes the representative vibration sources. There are no new or additional sources. Therefore, Table 7-1 can be used to predict vibration levels. Potential vibration effects from works are summarised in Section 12.2.
8. Blasting
Section 8 of the CNV DWP is not applicable to the PRR works.
9. Mitigation and Management
The mitigation and management measures outlined in Section 9 of the CNV DWP as well as the SSCNVMPs in Appendix C are appropriate and sufficient for the PRR works. No new mitigation or management measures are required at this stage unless the effects, design or construction methodology changes.
However, one new SSCNMP may be required, in accordance with condition 37.2, for:
• 27 Boston Road – Pavement re-instatement works could be up to 75 - 80 dB LAeq for brief times. Therefore, if works are greater than two weeks than an SSCNMP may be required. This has been prepared (reference C85) and is attached in Appendix A.
10. Communication
The same communication procedures as Section 10 of the CNV DWP will be carried out.
11. Monitoring
The same monitoring procedures as Section 11 of the CNV DWP will be carried out.