Construction Environmental Management Plan – Addendum
Karangahape Station and Public Realm
Reinstatement
Construction Environmental Management Plan – Addendum
CRL-KRD-RME-LKA-RPT-800015
Revision: A01
Date: 22/12/2021
Karangahape Station and Public Realm Reinstatement –
Construction Environmental Management Plan - Addendum
Link Alliance Document Number: CRL-KRD-RME-LKA-RPT-800015
This document is uncontrolled when printed. This document should be printed in colour
Revision Status
Approval Status
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.
In February 2020, Auckland Council confirmed the Outline Plan and associated Construction Environmental Management Plan (CEMP) and Delivery Works Plans (DWPs) for the Karangahape Station main construction works (‘Main Works’). This addendum to the Link Alliance Karangahape Station Main Works (‘Main Works’) Construction Environmental Management Plan (CEMP)1 provides an overarching framework for the management of construction effects associated with the construction of the superstructure2 and public realm reinstatement (PRR) phase of works.
This addendum has been prepared to detail the construction methodology and address the potential adverse effects associated with this phase of the construction works that were not covered in the Main Works CEMP. Where necessary, the CEMP Addendum details any further provisions are required in relation to the works that are not already provided in the Main Works CEMP. In some instances, it has been appropriate to prepare addendum documents to the respective Main Works DWP also (refer Table 1.1).
Where project details, procedures and protocols are already covered in the Main Works CEMP and are directly applicable to the superstructure and PRR works, reference is made to the appropriate
1 Karangahape Station Main Works Construction Environmental Management Plan, dated January 2020 (ref.CRL-KRD-RME-LKA-PLN-800014)
2The Karangahape Station superstructure refers to any permanent, above ground components of the Karangahape Station.
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Figure 1.1 CRL Route and Location
section of the Main Works CEMP. Accordingly, the CEMP Addendum should be read in conjunction with the certified Main Works CEMP, and the associated delivery works plans and management plans. Table 1.1 provides an overview of the suite of Main Works DWPs and MPs and additional addendums prepared for these PRR works.
Table 1.1: Overview of CEMP and sub-plans
Existing Karangahape Station Main Works Plans Plan
Construction Environmental Management Plan (CEMP)
Social Impact and Business Disruption DWP (SIBD DWP) – Appendix F to the CEMP
Communication and Consultation Plan (CCP) - Appendix G to the CEMP
Erosion and Sediment Control Plan (ESCP) – Appendix H to the CEMP
Air Quality DWP / Air Quality Management Plan – Appendix I to the CEMP
Industrial and Trade Activities
Environmental Management Plan (ITA EMP) – Appendix J to the CEMP
Transport, Access and Parking DWP (TAP DWP) – Appendix K to the CEMP
Construction Noise and Vibration DWP (CNV DWP) – Appendix L to the CEMP
Historic Heritage DWP (HH DWP), Built Heritage - Appendix M to the CEMP
Additional plans applicable to Superstructure and PRR works
– Addendum
Urban Design DWP (Appendix C to the Outline Plan)
19 - 21
47
61
CCP-Addendum (Appendix E to the Outline Plan)
TAP DWP –Addendum (Appendix B)
Site Specific Construction Noise and Vibration Management Plan – Public Realm Reinstatement (Appendix C)
159-166
C 25.3, 27.1 and 27.2
C 36, 37 and 38
C 41 and 46 -
Historic Heritage DWP (HH DWP), Archaeology - Appendix N to the CEMP C 42 -
Contamination DWP / Contaminated Soils Management Plan – Appendix O to the CEMP
57 and 58 C 131 -148
Groundwater and Settlement Monitoring and Contingency Plan (GSMCP) –Appendix P to the CEMP - C 96 -103
6 | Karangahape Station and Public Realm Reinstatement
2. Karangahape Station Superstructure and Public Realm Works
Overview of Works
This chapter provides a description of the construction works (being the construction of the superstructure and PRR works) which are not included in the Main Works CEMP.
The Karangahape Station is located at the junction of Pitt Street, Mercury Lane and Karangahape Road. It lies perpendicular to Karangahape Road, extending generally from Beresford Square at the north, to Canada Street at the south.
The works include the construction of the Karangahape Station superstructure. This includes above ground station entrances at Beresford Square and Mercury Lane, as well as the services and retail building and ventilation structures at Beresford Square.
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 extent of the PRR works is shown in Figure 2.1 below. The works will be undertaken in a staged manner commencing as the current construction works are progressively completed (refer Section 2.2).
A description of each of the key activities relevant to this addendum is provided in Section 2.3.
2.1: Plan showing approximate extent of works (red hatched line), above ground buildings and construction support areas (highlighted blue)
Construction Staging
The works will be undertaken in a staged manger, commencing as the current construction works are progressively completed (refer to Table 2.1). The total duration of works is approximately three years, commencing in March 2022.
Figure
Table 2.1:
Overview of Construction Works and Staging
Mercury Lane
Stage 0 - Buildings - Construct the station superstructure Q1 2022 Q4 2023
Stage 4 – Mercury Lane - Reinstate road profile and footpath - Utility installation - Streetscape
2024 Q3 2024
Stage 5 – Mercury Lane - Reinstate road profile and footpath Q3 2024 Q4 2024
Stage 6 – Lane Way and CSA - Backfill temporary shaft and extract sheet piles - Dismantle tower crane/gantry crane/noise enclosure/site office etc - Construct laneway between Mercury Lane and East St - Reinstate CSA
Stage 7 – Final streetscape - Final landscaping - Final streetscape - Complete mill topper
Beresford Square
Stage 0 - Buildings - Construct the station superstructure - Construct the service building - Construct the ventilation structure
Stage 6 – Beresford Square - Reinstate footpath - Streetscape - Tree grove
Stage 7 – CSA - Utility installation - Reinstate the CSA - Remove site office
Stage 8 – Final streetscape - Final landscaping - Final streetscape - Complete mill topper
Construction Methodology
The construction methodology includes the above ground components of the Karangahape Station (superstructure) and public realm reinstatement (PRR) works. The works relate to both Beresford Square and Mercury Lane unless otherwise specified.
Generally, the works will consist of:
• Construction of the station above ground and other buildings at Beresford Square and Mercury Lane (including service building, intake ventilation structure) including structural fitout and MEFH installation
• Construction of new stormwater
• Installation of utilities
• Construction of tree pits
• Installation of new road pavement
• Installation of new footpath pavements
• Landscaping works
• Installation of street furniture
2.3.1. Construction of Station Superstructure at Mercury Lane
Once the required underground elements have been constructed the superstructure will commence. The building is a steel frame and pre-cast panelled building. This will be constructed floor by floor and then the outer panels placed as required. Mobile cranes will be utilised for the above ground structural elements. The construction of this is required for certain elements of the MEFH fitout to begin.
The MEFH fitout includes multiple aspects of the station build. These include escalators, lifts, ventilation, bathrooms, pipes (water, waste and fire), comms and control cables and power services. These will be delivered to site and installed as required.
Equipment required for the construction of the superstructure is included in Table 2.2
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Table 2.2: Construction equipment for Mercury Lane station superstructure
Tower
Mobile
Boom
Scissor
Flat
Crane /Hiab trucks
Weld
36 T
50 to 120 ton
14m to 38 m
8m to 14 m
to 32T
to 11000w
2.3.1. Construction of Station Superstructure at Beresford Square
Once the underground structure is complete and all the structural elements underground completed the closing up of any temporary openings and removal of the internal temporary works will begin.
Once complete the above ground structural works will begin. The above ground station buildings consist of a concrete panelled service block and ventilation stack, a steel framed and glass structure as the main station entrance and secondary ventilation stack.
The majority of the MEFH works occur below the L0 slab. The above ground works consist of the construction of the ventilation stacks and a toilet block and a small retail space. These utilities will be delivered to site and installed into place with cranes as required.
Equipment required for the construction of the superstructure at Beresford Square is included in Table 2.3.
Scissor
to 8 m Flat
to 32 T
Weld
to 11000w
2.3.2. Stormwater Infrastructure
New stormwater catchpits, lines and drains are being installed to capture stormwater runoff from the road and footpaths. The new stormwater infrastructure is within the road carriageway, and connects into the existing stormwater network.
The stormwater construction works will be staged to construct the main drainage lines, manholes and connections first. Generally, these works start from the downstream connection points and are laid ‘uphill’ to the head of the new drainage line. Once the main drainage lines are completed then
Table 2.3: Construction equipment for Beresford Square station superstructure
the Aco drains, catchpits and leads will be constructed – with the works staged in accordance with the construction phasing drawings and associated traffic management.
Plant used for the stormwater works includes excavators (5T-20T), trucks for spoil disposal and importing backfill materials, concrete trucks, compaction equipment (plate compactors and/or small rollers), trench shields and hand tools. Due to the limited space available on the site, materials will be delivered to site as they are required for the construction works.
2.3.3. Utilities
All the existing utilities have been diverted into their permanent locations around the station footprints. However, the connections to the structure and the station itself are to be completed and these will be installed as part of the public realm works and their associated installations. This will include low voltage for lighting and fibre and copper cabling.
Duct installations will be completed using 5 – 14t excavators, trucks for spoil disposal and importing backfill materials, concrete trucks, compaction equipment (plate compactors and/or small rollers), trench shields and hand tools. Due to the limited space available on the site, materials will be delivered to site as they are required for the construction works.
Linked to this utility duct and cable work will be the installation of street lighting and other above ground traffic service installations.
2.3.4.
Tree Pits
Several tree pits will also be constructed for new planting installations both down Mercury Lane and also the tree grove at Beresford Square.
Many of the tree pits are in close proximity to services and in some cases 25mm steel plates are to be installed to provide an additional root barrier between the tree pits and service trenches. During excavation, as utilities are approached, hydro excavation and pothole techniques will be used to expose them. Excavation around the utility will be undertaken, leaving enough material to support it temporarily. Where required, temporary supports will also be installed around the utilities.
Tree pits will be excavated to depth using excavators (5T-20T) with the excavation battered to provide a safe working zone. The excavations will be around 1.0-2.0m deep.
For the tree grove, a large insitu concrete trench between 1.5-2.1m is proposed, with all specimen root balls contained within the trench (refer Figure 2.2).
Plant used for the tree pit works includes excavators (10-20T), trucks for spoil disposal and importing backfill materials, compaction equipment (plate compactors and/or small rollers), trench shields and hand tools. Due to the limited space available on the site, materials will be delivered to site as they are required for the construction works.
2 2: Tree grove section – Drawing reference CRL-KRD-URB-LKA-DRG-600003 C00A
2.3.5.
Road Pavement
Once the substantial below ground works are completed in each area, the road pavement works will commence. Subsoil drains will be constructed along the edges of the road carriageway, followed by the kerb construction, then subgrade and basecourse layers.
Testing will be undertaken on the subgrade and basecourse layers during construction to confirm the requirements of the civil specifications and drawings have been achieved.
The basecourse material will be placed directly from trucks, and spread and compacted using excavators, graders and plate / roller compactors. The road will be constructed in stages providing the necessary live traffic lanes, vehicle access to properties and maintaining pedestrian and cycle access.
Once the basecourse layers are complete, then the structural asphalt layers will be constructed. Specialist asphalt subcontractors will undertake these works using asphalt paving plant. The final 50mm layer of AC14 will not be placed until the final phase of the works. This is to ensure no damage to the final layer and to provide a consistent finish with fewer visible joints. Line marking works will be completed once the final asphalt layer has been placed.
2.3.6.
Footpath Pavements
The footpath pavements will commence in an area once the utilities works, tree pits and kerbing have been completed. Footpath pavements generally consist of basecourse layer, reinforced concrete layer and decorative paving layer.
The footpaths will be constructed in phases, with pedestrian access (1.5m wide) and access to properties maintained. The pedestrian routes will generally be kept close to the building walls, but will be moved within the workzone to allow the works adjacent to the buildings to be completed. At all times the pedestrian access routes and live work zones will be separated by appropriate safety barriers (eg. fencing).
Testing will be undertaken on the subgrade and basecourse layers during construction to confirm the requirements of the civil specifications and drawings have been achieved.
Figure
The basecourse material (cement treated basecourse) will be delivered to the worksite as required by trucks, and spread and compacted using small excavators (5-10T), and small roller or plate compactors. Concrete delivery for the structural concrete layer will be by truck, with concrete pumps (Line or boom) used as required. The concrete layer will be constructed in segments to maintain pedestrian movements and suit the constraints of the site. A watering system shall be used to control dust from the placement of fill and bedding material as well as during compaction.
Decorative paving works will involve cutting and placing stone pavers and mixing and placing of Steintec bedding or similar. A watering system shall be used to control dust from extraction and any cutting operations. A mobile acoustic enclosure shall be used where practicable for any paver cutting.
Materials for these works will be kept on site (in limited quantities as required) and mixed and cut to fit in designated areas of the works zone.
2.3.7. Landscaping
Landscaping works consist of planting including tree planting in the completed tree pits. This will be one of the final activities and will be completed from the adjacent traffic lane. Trees will be delivered by truck and planted by hand or using a Hiab crane. Surface tree grilles or permeable covering will be installed once trees have been planted.
2.3.8. Street Furniture
Street furniture includes street lighting and signage, traffic signals, seating, rubbish bins, bicycle racks, and any artwork or architectural items (fascia panels or sculptures).
Foundations and utilities supplies for these items will be completed during the previous stages of these works. The installation of road furniture will be one of the final activities undertaken in each area.
Street furniture will generally be delivered to site and installed immediately. Installation will be carried out by specialist installers using hand tools, and Hiab crane for lifting larger items.
Commissioning and testing of the electrical items (e.g. street lights, traffic signals) will be carried out by specialist electricians in accordance with the specifications and local authority requirements
Programme
The works are anticipated to take approximately three years to complete, commencing in March 2022 at Mercury Lane and October 2022 at Beresford Square. Refer to Section 2.2 for further detail.
Construction Support Areas
Construction materials and laydown areas shall be located within the works areas identified as CSA 2 and CSA 3 (refer Figure 2 3) and shall be shifted between works areas during each of the construction phases. The CSAs will be reduced and reinstated as the PRR works proceed until operation of the CSAs is no longer required. An overview of the activities within the CSA is provided in Table 2.2.
Construction Support Area Key Plant/Activities
CSA 2 (Beresford Square)
CSA 3 (Mercury Lane)
- Construction Material Stores (lighting, pavers, motar, ducting, cables etc)
- Construction Staging area, pre-building construction items for install
- Fuel and Oils Stores
- Plant Storage, including pumps, generators, excavators, and trucks
- Construction Material Stores (lighting, pavers, motar, ducting, cables etc)
- Construction staging area, pre-building construction items for install
- Fuel and Oils Stores
- Plant Storage, including pumps, generators, excavators and trucks
- Site Amenities
The site office, site parking, and compound site security and safety, along with site housekeeping will be as per the Main Works CEMP until no longer practicable, or required, depending on the progress of work and associated constraints.
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 – 2200 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 NUO requires works to be undertaken at night, or the delivery of large plant.
Figure 2 3: Construction support areas at Beresford Square and Mercury Lane
Table 2.4: Overview of Construction Support Areas
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
Site Security, Safety and Public Viewing
There is no change to the protocols for managing security, safety and public viewing outlined in the Mains Works CEMP.
3. Social and Environmental Management
Construction Activities and Associated Environmental Receivers
The key construction activities associated with the works are summarised in Table 3.1 below.
These activities have the potential to generate adverse environmental effects relating to network utility disruption, social and business disruption, transport access and parking, noise and vibration, dust, stormwater discharges, soil contamination, and built heritage.
Table 3.1. Construction activities and associated environmental receivers
Main activities
- Construction of buildings
- Backfilling
- Spoil handling
- Reinstatement
- Installation of utilities
- Planting of trees
- Installation of pavements including concrete cutting
- Installation of street furniture
Environmental Risk Register
Receiving Environment
- Stormwater (Waitemata Harbour)
- Buildings (vibration/heritage)
- Residents/social and businesses (noise/vibration/dust/odour)
- Traffic network
There is no change to the risk register framework outlined in Section 3.2 of the Main Works CEMP. It is noted that as the risk register is a ‘living document’ and shall continue to be reviewed monthly as part of the Project Monthly Report and prior to the commencement of new construction activities, such as the PRR works.
Cumulative Effects
There is no change to the existing approach, whereby sub-plans are relied upon for identification, controls, and monitoring to address cumulative effects. Additional controls are specified in Section 5 of this CEMP.
Legislative and Other Requirements
There is no change to the identified legislation, polices, plans and consents in Section 3.4 of the Main Works CEMP.
4. Implementation and Operation
The works will be undertaken in accordance with Section 4 of the Main Works CEMP. Specifically, there is no change to the roles and responsibilities, or the environmental and sustainability training and induction procedures outlined in the CEMP.
5. Environmental Management
The Main Works DWPs and Management Plans continue to detail the controls and measure for each of the environmental aspects of the PRR works as specified in Section 5 of the Mains Works CEMP. Furthermore, the following sections identify the environmental aspects associated with the construction of the PRR works with any additional operational controls and mitigation measures specific to the PRR works identified.
Social Impact and Business Disruption
The superstructure PRR construction works will not change the level of potential adverse social or business disruption effects from the activities identified in the Social Impact Business Disruption (SIBD DWP). In addition, the potential effects of the PRR works don’t extent beyond the ‘affected community’ identified in the Main Works SIBD DWP.
A such, there is no change to the general processes for managing social impacts and business disruption (SIBD) as identified in Section 5.2 of the Main Works CEMP, with additional mitigation to be implemented as outlined in this CEMP Addendum.
Communication and Consultation
An addendum to the Communication and Consultation Plan (CCP) has been prepared (Appendix D of the Outline Plan) A confirmed by the CCP-Addendum, there is no change to the general processes outlined in the Communication and Consultation Plan (CCP) for to ensure appropriate communication and consultation with the community, stakeholders, affected parties and affected in-proximity parties occurs during the works as identified in Section 5.2 of the Main Works CEMP.
Erosion and Sediment Control
There is no change to the general processes for managing erosion and sediment generation as identified in Section 5.3 of the Main Works CEMP
The Main Works Erosion and Sediment Control Plan (ESCP) follows the principles of Auckland Council GD05. Erosion and sediment control measures will be installed prior to the start of any land disturbance works. The mitigation measures will remain in place until reinstatement of active working areas is complete
The mitigation measures will remain in place until reinstatement of active working areas is complete General ESC measures include:
• Catchpit/stormwater inlet protection (e.g., covering catchpit grates with geotextile to filter sediment laden runoff);
• Chemical treatment (used to improve the efficiency of sediment retention devices e.g., automated chemical dosing);
• Dewatering devices (devices used to pump out water that collects within open trenches);
• Diversion channel/bund (install to divert runoff from external catchments entering construction areas e.g. hotmix diversion bunds);
• Filter socks (with or without flocculation, to intercept and impound runoff);
• Sand logs/coir logs (use in carriageway to divert clean water from construction site);
• Settlement tanks (for storage of sediment-laden runoff); and
• Stabilised entrance and surface (vehicle movements on sealed surfaces, vehicle accesses to be kept clean, stabilise entrance ways using aggregates).
Air Quality
The main discharges to air that will arise from the works is dust. The following dust generating activities associated with the works have been identified:
• Breaking up and excavating the existing footpath;
• Placement of fill/bedding material;
• Excavation of tree pits;
• Cutting of pavers/kerbstones;
• Concrete cutting; and
• Placement of soil
Apart from the cutting of pavers and concrete as described below, the other activities will be undertaken in accordance with Section 5.4 of the Main Works CEMP and the Air Quality (AQ) Delivery Work Plan.
5.4.1.
Mitigation measures
The dust prevention methods outlined in Table 5.1, will be used as applicable to control dust emissions from the cutting of pavers and curb stones, in all areas of the Project. The list is not exhaustive and additional methods which are found to be effective may be used.
Some of the particulate generated by the cutting of pavers and kerbstones has the potential to be respirable quart/crystalline silica which, when uncontrolled, presents some health risks. These risks are controlled through the mitigation proposed in Table 5.1.
Table 5 1: Dust management methods for PRR pavement works
Source of Dust Control
Pavement Removal
Placement of Bedding Material
Cutting of Pavers
- Use water as necessary to control dust from extraction and any cutting operations.
- As far as practical excavated material is to be loaded directly into trucks.
- Use water as necessary to control dust from the placement of fill and bedding material as well as during compaction.
- As far as practicable all pavers and curb stones will be cut using equipment fitted with water dust suppression.
- Where it is not possible to use water suppression vacuum extraction systems shall be fitted to the cutting/grinding equipment.
- Solid barriers can also be placed around cutting activities to minimise wind effects.
- Alternatively, enclosures may be required (to mitigate noise).
Monitoring of these dust generating activities will be in accordance with the requirements of the AQ DWP. This includes daily visual inspections.
Transport, Access and Parking
A Transport Access and Parking DWP Addendum (Appendix B) has been prepared to specify the methodology during the superstructure and PRR construction works. The addendum identifies the transport configurations (including traffic layouts and movements, pedestrian access, property access and parking) for each of the construction stages
The traffic management stages have been assessed to comply with relevant CRL designation conditions
Measures outlined in the TAP DWP that will be implemented during the construction of the station superstructure and PRR works include:
• Long Term Temporary Traffic Management Plans (TMPs) will be implemented for each traffic stage of the works;
• Pedestrian and cycle access to properties will be maintained at all times;
• Provision for pedestrian access around the works areas and retaining access to businesses and offices;
• Signage will be used to direct traffic and pedestrians wishing to gain access to businesses as appropriate. Where any access to private property is temporarily impacted by the main works, the affected parties will be consulted with, prior to the closure in accordance with the designation conditions;
• Detour routes and plans will be developed to manage the temporary closures;
• Where vehicle access to private property will require temporary closure to complete the works, landowners and occupiers will be consulted in advance as required by designation condition 28.2(c)(ii).
Together with the specific measures to manage the works set out in the TAP DWP - Addendum and the general management measures in the TAP DWP, adverse transport, access and parking effects will be appropriately mitigated.
Construction Noise and Vibration
Construction noise and vibration will continue to be managed in accordance with the general processes for managing construction noise and vibration as outlined in Section 5.6 of the Main Works CEMP and detailed in the Main Works CNV DWP.
Engagement with residents and businesses potentially affected by noise and vibration receivers will be a key component for the management of disruption from construction activities as outlined in Section 7 of the CNV DWP. Construction noise and vibration monitoring shall be carried as per the requirements detailed in Section 8 of the CNV DWP.
Monitoring of noise and vibration is detailed in Section 8 of the CNV DWP and will be undertaken during construction when noise or vibration has the potential to exceed the limits or in response to noise or vibration complaints.
Further detail associated with the two main phases of construction is provided below.
5.6.1. Station Superstructure
The list of plant items required for the works remains unchanged from that in the Main Works CNV DWP, with the exception of addition of the rattle gun. Table 5 2 shows the equipment that will be used for the works. There are no additional vibration sources from that listed in the Main Works CNV DWP.
Table
5.2: Equipment noise levels
No additional receivers are expected to be affected by the superstructure works. Noise levels at surrounding receivers during the superstructure works will be lower than maximum noise levels during other construction activities from the Main Works. The footprint of the superstructure works at both Beresford Square and Mercury Lane are contained within the previous extents of the Main Works. There are no receivers where the vibration building damage or amenity criteria are predicted to be exceeded.
5.6.2. Public Realm Reinstatement
A draft Site-Specific Construction Noise and Vibration Management Plan (SSCNVMP) – PRR has been prepared due to a number of receivers where PRR construction activities are predicted to exceed the project noise and vibration limits. This is attached as Appendix C to the CEMP-Addendum
The SSCNVMP- PRR provides best practical options for mitigation, such as the use of noise barriers, noise mats, monitoring, and advanced consultation
Consultation for the PRR works will take place prior to the commencement of the PRR works, and generally following the processes mapped out in the Communication and Consultation Plan (CCP). This will involve a programme of targeted engagement that provides affected stakeholders with advanced notice on works staging, activities, programme and duration. The discussions will include possible solutions to alleviate stakeholder concerns. Outcomes and resultant actions of these discussions will be used to update Error! Reference source not found. draft SSCNVMP. Where any c omments by stakeholders have not been incorporated, the reason for this will be set out. A finalised SSCNVMP will be submitted to Council with a record of this consultation prior to construction
Historic Character
5.7.1.
Historic Character
The Project area is in close proximity to a number of heritage features, including:
• Heritage buildings (almost all buildings in Pitt Street, Beresford Square and Mercury Lane) with notable buildings being Auckland’s early fire and ambulance station, Mercury Theatre, Pitt Street Wesleyan Church, former St James Church in Beresford Square (Hopetoun Alpha) and buildings in 61-65 Pitt Street; and
• Historic streetscape elements, including basalt kerbs and blocks within footpaths of Pitt Street.
The superstructure and PRR construction works will be undertaken in accordance with Section 5.7.1 of the Main Works CEMP and the general management measures outlined in the Historic Heritage DWP – Built Heritage. This includes methods to monitor the works (as set out in the CNV DWP, SSCNVMP and GSMCP) and to protect heritage fabric during construction phases. This includes the use of plywood to protect building fabric, use of bracing for parapets, chimneys etc and careful removal of basalt kerbs for re-use.
Protection measures shall be reviewed by the Project Built Heritage Specialist prior to works commencing and periodically during the works.
5.7.2. Archaeology
The works will be undertaken in accordance with Section 5 7.2 of the Main Works CEMP and the general management measures outlined in the Main Works Historic Heritage DWP – Archaeology.
No archaeological sites have been identified within the wider Karangahape Station works area However, the HC DWP (Archaeology) notes:
• A house and a Sunday school were located in the Beresford Square CSA in the 19th and 20th centuries, which may have associated subsurface remains.
• Other potential areas of archaeological interest include the properties at 9A, 9B, 9C, 11-13 and 17-21 Mercury Lane within the Mercury Lane CSA which may have subsurface archaeological remains.
• There is a limited chance of impacting on subsurface pre-1900 archaeological or significant 20th century historic heritage remains within the road reserves of Mercury Lane, Pitt Street and Beresford Square, such as early drainage infrastructure or street surfaces.
Detailed archaeological procedures and mitigation measures are provided in the HC DWP (Archaeology), and these are summarised below (related to the entire project area unless specified otherwise).
• An archaeologist to be present during shallow excavations within the CSAs;
• Discovery Protocols to be followed if any archaeological features and deposits are exposed during works. The Link Alliance will notify the Project Archeologist, who will then assess the features, record the exposed remains and recover samples of archaeological material for further analysis;
• Mana Whenua protocols to be followed if archaeological remains relating to Māori occupation are exposed. The Project Archaeologist will inform the appropriate Mana Whenua representatives;
• Recording of features and deposits;
• Artefact Management Plan;
• Post excavation analysis and archiving; and
• Reporting. d
22 | Karangahape Station and Public Realm Reinstatement
Contaminated Soils
The existing management approach to the disturbance of any contaminated, or potentially contaminated material encountered during the PRR work, and the management of any associated human health or environmental effects will be undertaken in accordance with Section 5.8 of the Main Works CEMP and the Main Works Contamination DWP.
Groundwater and Settlement
Due to the shallow nature of excavations required for the PRR works, groundwater is not expected to be encountered.
If groundwater is encountered, groundwater and settlement monitoring will be undertaken in accordance with the Main Works GSMCP.
Network utilities
Consultation and co-ordination with Network Utility Operators will continue to be managed in accordance with the general processes outlined in Section 5.10 of the Main Works CEMP.
Light Spill and Glare
There is no change to the existing processes for managing construction lighting as identified in Section 5.11 of the CEMP.
Building Condition Surveys
Building condition surveys (BCS) were required to be undertaken prior to the Main Works construction phase commencing, in accordance with designation condition 46 and resource consent condition 109. Due to the shallow nature of excavations required, no additional building condition surveys are required prior to the commencement of the PRR phase of works.
Post construction condition survey requirements will be undertaken as identified in Section 5.12 of the Main Works CEMP.
Industrial and Trade Activities
Industrial trade activities will be managed in accordance with Section 5.13 of the Main Works CEMP and the relevant provisions of the Industrial and Trade Activities Environmental Management Plan. This includes activities such as vehicle refuelling, concrete washout, and the management of hazardous substances. Any spills on site will be managed in accordance with the General Spill Response Plan provided as Appendix C to the ITA EMP
Waste Management
There is to change to the existing processes for waste management as identified in Section 5.14 of the Main Works CEMP.
Energy Use
There is no change to the existing processes for reducing energy use as identified in Section 5.15 of the Main Works CEMP.
23 | Karangahape Station and Public Realm Reinstatement
Water Use
There is no change to the existing processes for reducing water use as identified in Section 5.16 of the Main Works CEMP.
Material Use
There is no change to the existing processes for reducing material use as identified in Section 5.17 of the Main Works CEMP.
Emergency and Incident Response
There is no change to the existing processes for incident response as identified within Section 5.18 of the Main Works CEMP.
6. Monitoring and Review
There are no changes to the procedures for environmental monitoring and review requirements as identified within Section 6 of the Main Works CEMP.
7. Conclusion
The existing management approach detailed in the Karangahape Station Main Works CEMP, together with the additional measures outlined in this addendum, will appropriately manage any potential adverse effects associated with construction of the station superstructure and PRR works.
Appendix B: Traffic Access and Parking Delivery Work PlanAddendum
Karangahape Station and Public Realm
Reinstatement
Transport Access and Parking Delivery Work Plan Addendum
CRL-KRD-RME-LKA-RPT-800016
Revision: A01
Date: 14 December 2021
Karangahape Station Public Realm Reinstatement – Transport Access
and Parking Delivery Work Plan Addendum
CRL-KRD-RME-LKA-RPT-800016
This document is uncontrolled when printed. This document should be printed in colour
Revision Status Revision
Approval Status
Reviewed by: Alexandra Scouller/Link Alliance Planner 21/12/2021
Approved by: Peter Roan/Link Alliance Planning Manager 21/12/2021
5.2.1.
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.
This addendum to the Karangahape Station Main Works Transport Access and Parking Delivery Work Plan (TAP DWP)1 has been prepared to address any potential effects associated with the public realm reinstatement works (PRR) phase of construction works and construction of the station superstructure that is not covered by the Main Works phase2
This addendum should be read in conjunction with the Karangahape Station Main Works TAP DWP. Where project details, proposed management and effects are already covered in the Karangahape Station Main Works TAP DWP and are directly applicable to the PRR works, reference is made to the appropriate section of that document.
2. Project Description
This section presents a summary of the PRR works to provide context to the TAP DWP Addendum. A detailed description of the PRR works is provided in the Karangahape Station PRR Construction
Environmental Management Plan (CEMP) Addendum. Further detail on the PRR works is also provided in the Karangahape Station Urban Design Delivery Work Plan (Urban Design DWP).
1 Karangahape Station Main Works Transport Access and Parking Delivery Work Plan, Rev 001, prepared by the Link Alliance, dated 20 April 2020
2 The Karangahape Station superstructure refers to any permanent, above ground components of the Karangahape Station.
Page 4 | Karangahape Station and Public Realm Reinstatement
Figure 1.1 CRL Route and Location
2.1 Construction Methodology Overview
The extent of the PRR works includes Mercury Lane, the west end of Cross Street, the new southern lane connecting Mercury Lane with East Street, Beresford Square, Pitt Street, and tie-ins to Karangahape Road. The extent of the public realm works is shown in Figure 1.1.
The works include the construction of the Karangahape Station superstructure. This includes above ground station entrances at Beresford Square and Mercury Lane, as well as the services and retail building and ventilation structures at Beresford Square.
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 extent of the PRR works is shown in Figure 2.1 below. The works will be undertaken in a staged manner commencing as the current construction works are progressively completed (refer Section 2.2).
The construction of the superstructure and PRR works are divided into ‘stages’ (based on activity for the Mercury Lane and Beresford Square Precincts) as illustrated in Table 2.1
Table 2.1. Overview of Construction Works and Staging
Figure 2 1: Extent of the public realm works (red hatched line) and construction support areas (highlighted in blue)
Stage 2 – Mercury Lane and Cross Street
Stage 3 – Mercury Lane
- Utilities installs
- Reinstate road profile of Mercury Lane and Cross Street - Utilities installs
- Reinstate road profile
- Reinstate footpath
- Utilities installs
- Streetscape
- Cross Street footpath
Stage 4 – Mercury Lane - Reinstate road profile and footpath - Utilities installs - Streetscape
Stage 5 – Mercury Lane - Reinstate road profile and footpath
Stage 6 – Lane Way and CSA
- Backfill temporary shaft and extract sheet piles - Dismantle tower crane/gantry crane/noise enclosure/site office etc.
- Construct laneway between Mercury Lane and East St - Reinstate CSA
Stage 7 – Final streetscape - Final landscaping - Final streetscape
- Complete mill topper
Beresford Square
Stage 0 - Buildings
Stage 1 – Pitt Street (west)
- Construct the station superstructure - Construct the service building - Construct the ventilation structure
Stage 6 – Beresford Square - Reinstate footpath - Streetscape - Tree grove
Stage 7 – CSA - Utilities installs - Reinstate the CSA - Remove site office
Stage 8 – Final streetscape - Final landscaping - Final streetscape - Complete mill topper
3. Existing Transport Conditions
The traffic volumes of the roads nearest to where the superstructure and PRR works will be undertaken are shown in Error! Not a valid bookmark self-reference..
Table 3 1 Traffic volumes on main roads adjacent PRR works
This table shows the estimated 5-Day Daily traffic volumes obtained from Waka Kotahi’s One Road Network Classification (ONRC) It also shows the AM and PM peak time volumes obtained from survey data at the intersection of Karangahape Road and Mercury Lane.
4. Proposed Traffic Management Methodology
The traffic management methodology has been developed to ensure that the transport functions of private properties and the public road network are maintained in accordance with the CRL designation conditions. Within the works area, the provision of access to private property and the public network for the different transport modes are prioritised in this order:
1. Active transport (pedestrians and cyclists), 2. Public transport,
Page 7 | Karangahape Station and Public Realm Reinstatement
3. Freight (including service vehicles, couriers and taxis), and 4. Private vehicles.
Site-specific Traffic Management Plans (TMP) will be developed approximately one month before the commencement of works in accordance with the CRL designation conditions, this DWP addendum, and Waka Kotahi’s Code of Practice for Temporary Traffic Management (CoPTTM).
A Traffic Resolution approval will be obtained from AT’s Traffic Control Committee to support any TMPs that require changes to on-street traffic and parking controls to be in place for three weeks or more.
The following report sections describes the general traffic management methodology for each stage of the works.
4.1 Mercury Lane (Stages 0 to 7)
The works for Mercury Lane are divided into eight stages from Stage 0 to Stage 7.
Stage 0 consists of the construction of the Karangahape Station superstructure and includes a work area that is predominantly within the station precinct boundary. The indicative traffic management layout is shown in Figure 4.1
The traffic movement provisions in this stage are the same as the existing Main Works setup It includes vehicles travelling in the southbound direction on Mercury Lane and in the eastbound direction on Cross Street. Pedestrian movements along Mercury Lane will be maintained via the eastern footpath on Mercury Lane, south of Cross Street
Stage 1 works comprise the removal of retaining structures, temporary road pavement and utility installations on the western side of Mercury Lane. As shown in Figure 4.2, one southbound traffic lane is still maintained on Mercury Lane as was in Stage 0.
The work site will occupy the footpath and approximately six on-road parking spaces on the western side of Mercury Lane The existing parking spaces are part of the paid parking scheme in the City Centre Parking Zone (CCPZ). Pedestrian access to the properties on the western side will be maintained via a protected pathway through the work area.
Stage 2 is divided into two sub-stages (Stage 2.1 and 2.2) and comprises works on the eastern side of Mercury Lane for the reinstatement of the road profile, station utility works and adjustments to the Cross Street roading profile and footpath.
The indicative traffic management layout for Stage 2.1 is shown in Figure 4.3.
Figure 4 2: Indicative traffic management layout for Stage 1
Vehicle access will be maintained for properties located on the eastern side of Mercury Lane and the northern side of Cross Street
Pedestrian access will be maintained for properties on the eastern side via a crossing facility from the western footpath and through a protected pathway through the work area. Pedestrian movements along Mercury Lane would be maintained via the western footpath on Mercury Lane between Karangahape Road and Cross Street and on the eastern footpath, south of Cross Street.
The loading zone on the eastern side of Mercury Lane will be relocated to the western side, occupying the previously mentioned CCPZ spaces.
The indicative traffic management layout for Stage 2.2 is shown in Figure 4.4
Figure 4 3: Indicative traffic management layout for Stage 2.1
This sub-stage involves a work area on the southern corner of Mercury Lane and Cross Street. Vehicle and pedestrian access to properties on Mercury Lane and the southern side of Cross Street will be maintained
Stage 3 comprises permanent utility installations, road and footpath reinstatement and streetscape works on the western side of Mercury Street, and on Cross Street as shown in Figure 4.5
Figure 4 4: Indicative traffic management layout for Stage 2.2
Figure 4 5: Indicative traffic management layout for Stage 3
The transport provisions of this stage is similar to Stage 1. Pedestrian access to properties on the western side of Mercury Street will be maintained. Cross Street from this stage till the end of the PRR works will operate as a one-way road in the westbound direction. This was the pre-CRL arrangement for Cross Street where vehicles entered the road from Upper Queen Street.
Stage 4 includes permanent utility installations, road and footpath reinstatement and streetscape works on the eastern side of Mercury Lane as shown in Figure 4.6.
This stage has a similar arrangement to Stage 2.1, maintaining pedestrian and vehicle access to properties on the eastern side of Mercury Lane, and north-south pedestrian movements on the western side of Mercury Lane. A pedestrian crossing facility will be provided on Mercury Lane, north of Cross Street.
Stage 5 comprises the works at the Mercury Lane / Canada Street intersection, for realignment of the right turn lane from Mercury Lane to Canada Street as shown in Figure 4.7.
Figure 4 6: Indicative traffic management layout for Stage 4
Right turn vehicle movements from Mercury Lane to Canada Street will be provided adjacent the work area. Pedestrian movements crossing Canada Street will be maintained and facilitated for with details to be shown in the final TMP
The indicative traffic management layout for Stage 6 is shown in Figure 4.8
Figure 4 7: Indicative traffic management layout for Stage 5
Figure 4.8: Indicative traffic management layout for Stage 6
This stage includes the reinstatement of the Mercury Lane Construction Support Area (CSA) and construction of a laneway between Mercury Lane and East Street, north of the station building. The work in this stage occurs within the CSA boundary and does not impact the wider transport network.
Stage 7 comprises the final landscape and streetscape works on Mercury Lane and the laneway between Mercury Lane and East Street, including the reinstatement of the traffic island at the Mercury Lane / Canada Street intersection. The indicative traffic management layout for Stage 7 is shown in Figure 4.9
This stage requires the temporary full closure of Mercury Lane to vehicular traffic to enable the installation of carriageway paver blocks on Mercury Lane. Local vehicle access and pedestrian access will still be maintained for properties on Mercury Lane and Cross Street and pedestrian through movements on Mercury Lane will be on the eastern footpath.
Vehicles access to Cross Street and Canada Street will be via Upper Queen Street.
4.2 Beresford Square (Stages 0 to 8)
The superstructure and PRR works for Beresford Square are divided into nine stages from Stage 0 to Stage 8.
For all stages of the works on Beresford Square, local vehicle access will be maintained to the greatest extent possible for properties on Beresford Square and Pitt Street. For stages where local vehicle access cannot be maintained, alternative parking on Beresford Square will be agreed with property owners.
Stage 0 consists of the construction of the station superstructure and utility works and includes work areas within the CSA as shown in Figure 4.10.
14 | Karangahape Station and Public Realm Reinstatement
Figure 4 9: Indicative traffic management layout for Stage 7
This stage is the same as the existing Main Works setup where Pitt Street operates with one traffic lane in each direction and pedestrian movements along Beresford Square and Pitt Street are maintained along the building frontage via footpaths or protected walkways.
Stages 1 and 3 comprises construction of the station superstructure, installation of utilities, and the reinstatement of the road profile on Beresford Square and the western side of Pitt Street. The footprint of the works area is mostly the same as Stage 0 as shown in Figure 4.11.
Figure
The property access, vehicle and pedestrian movement provisions are the same as in Stage 0. The difference to Stage 0 is the works area occupies a longer section of Pitt Street. Pedestrians have an exclusive pedestrian crossing phase at the Karangahape Road / Pitt Street intersection and will be directed around the works area that occupies a section of the pedestrian crosswalk.
Stage 2 and Stage 4 comprises utility installation and road reinstatement works on Beresford Square and on the eastern side of Pitt Street The indicative traffic management layouts are shown in Figure 4.12.
Figure 4 11: Indicative traffic management layout for Stage 1 and 3
During these stages the CRL construction area on the western side of Pitt Street will be opened to provide two lanes of traffic, one in each direction.
Local vehicle and pedestrian access will be maintained for properties on the eastern side of Pitt Street Pedestrian movement provisions are similar to the previous Stage 1 and 3 and movements between Beresford Square and Pitt Street will be maintained via footpath and protected pathways adjacent to the work area.
The subsequent Stages 5, 6.1 and 6.2 comprises footpath reinstatement and streetscape works on Beresford Square.
The indicative traffic management layout for Stage 5 is shown in Error! Reference source not found..
Figure 4 12: Indicative traffic management layout for Stage 2 and 4
Vehicle traffic movements on Pitt Street during this stage will be moved back to the eastern side of Pitt Street while the western side of Pitt Street will be closed again for additional station building works.
During this stage vehicle access will be maintained to the greatest extent possible for properties on Beresford square and on Samoa House Lane. There is potential for temporary closures of vehicle crossings on the northern side of Beresford Square. Pedestrian access to properties on both sides of Beresford Square will be maintained and a protected path within the work area will connect the northern and southern sides.
The indicative traffic management layout for Stage 6.1 is shown in Figure 4.13.
Figure 4 13: Indicative traffic management layout for Stage 5
Similar to Stage 5, the property vehicle accesses on the southern side of Beresford Square may be temporarily closed The temporary loss of access to any private parking and the provision of alternative parking on Beresford Square will be discussed and agreed with the affected properties.
Pedestrians access to properties will be maintained, and through pedestrian movements will be provided for on protected pathways.
The indicative traffic management layout for Stage 6.2 is shown in Figure 4.14
Figure 4 14: Indicative traffic management layout for Stage 6.1
Figure 4 15: Indicative traffic management layout for Stage 6.2
In contrast to Stage 6.1, Stage 6.2 comprises works on the northern side of Beresford Square. Property vehicle accesses will be maintained to the greatest extent possible while pedestrian access to properties will be maintained on both the northern and southern sides of Beresford Square. Pedestrian movements crossing Beresford Square will be maintained at both ends of the work area with a protected walkway through the site at the eastern end near Pitt Street.
The indicative traffic management layout for Stage 7 is shown in Figure 4.15 and includes the work areas for utility connections, CSA reinstatement and the removal of the site office on Beresford Square.
Vehicle and pedestrian access will be maintained as in Stage 6.2 Approximately four spaces of onstreet parking spaces need to be removed between Hopetoun Street and Day Street to facilitate the two-way movement on a narrowed carriageway
The final stage for Beresford Square PRR works comprises the permanent landscape, streetscape and pavement works for Pitt Street and Beresford Square as shown in Figure 4.17
Figure 4 16: Indicative traffic management layout for Stage 7
Figure 4 17: Indicative traffic management layout for Stage 8
The full closure of Pitt Street to vehicle will be undertaken over approximately two nights. Local vehicle and pedestrian access will be maintained for properties on Pitt Street and pedestrian through movements will be maintained on both sides of Pitt Street
The traffic management arrangements on Beresford Square will be as per Stage 7
5. Assessment and Management of Effects
The indicative TMPs and this assessment of effects will be further supplemented by site-specific TMPs which will be submitted to Auckland Transport (AT) for approval in due course. AT will have discretion over the anticipated transport effects of the TMPs. Further discussion may be required with AT and Auckland Council to resolve any inconsistencies between traffic management measures and designation conditions
5.1 Mercury Lane Stages 0 to 7
5.1.1. Network Operational Effects
From Stage 0 to Stage 6, one southbound vehicle lane on Mercury Lane and one vehicle lane on Cross Street will be maintained adjacent to the work areas. These arrangements are not anticipated to have additional impacts on the network compared to the existing Main Works traffic management setup
From Stage 3 onwards, Cross Street will be converted from one-way eastbound back to a one-way westbound traffic lane as it was before the commencement of CRL construction. This is anticipated to reduce the volume of traffic entering Mercury Lane from Karangahape Road and Pitt Street, by rerouting traffic to Upper Queen Street for vehicle access to the properties on Cross Street.
Stage 7 requires the full closure of Mercury Lane, providing only access to local properties Survey data dated July 2021 recorded a total of approximately 300 vehicles entering Mercury Lane during peak hours. During Stage 7, some of this traffic would have already been rerouted to Upper Queen Street for access to Cross Street.
The remaining traffic volumes entering Mercury Lane are expected to be through-traffic that use Mercury Lane to reach Upper Queen Street towards Newton or the area around East Street. The alternative options for these vehicle movements is to use Queen Street to access Upper Queen Street, Symonds Street for the Newton area, or East Street via Karangahape Road. The anticipated redistribution of peak hour volumes across these three alternative routes is expected to have a minor to negligible effect on network operations.
Further assessment of network impacts may be undertaken as part of the site-specific TMP submission, if required by AT.
5.1.2. Pedestrian and Cyclist Access
Pedestrian and cyclist access to properties will be maintained at all times as required by designation conditions 25.2(b) and 25.3(f)(i), 28.2(c)(i). Pedestrian movements along Mercury Lane and Cross Street will be provided on footpaths (existing or new) or protected walkways through the work areas. The specific pedestrian diversions for each stage are shown in Figure 4 1 to Figure 4 9
No cycling facilities exist along Mercury Lane and Cross Street. Cyclists are expected to continue to use the vehicle lane.
5.1.3. Property Access
The Mercury Lane works are anticipated to impact vehicle access to the following properties:
• 2 Mercury Lane (Stages 2.1, 4 and 7)
• 1 Cross Street (Stages 2.2 and 7)
On-going vehicle access to properties will be maintained to the greatest extent possible as required by designation conditions 25.2(c), 25.3(f)(ii), 25.3(g), and 28.2(c)(ii).
Due to the temporary closure of Mercury Lane in Stage 7, vehicles will no longer be able to access Canada Street via Mercury Lane. Properties located on Canada Street and the southern end of East Street will still be able to access their properties via Upper Queen Street during this closure stage.
5.1.4. Public Parking and Loading
Removal of paid parking spaces on the western side of Mercury Lane is required for Stage 1 to Stage 7. There are approximately six spaces which will either be occupied by the works area or temporarily used as a loading zone for these stages. The permanent removal of these parking spaces is part of the public realm design for Mercury Lane and the parking loss is anticipated to have little to no effect on the area due to the parking options available in the surrounding streets, such as parking buildings on Cross Street.
The works in Stage 2.1 and Stage 4 occupies the loading zone located on the eastern side of Mercury Street between Karangahape Road and Cross Street During these stages the loading zone will be temporary located to the western side of Mercury Lane, the area previously allocated to paid
parking The specific timings for the use of this loading zone will be determined during the preparation of the site-specific TMP.
During Stage 7 the closure of Mercury Lane will result in the relocation of the loading zone currently located on the eastern side of Mercury Lane. This new location will be determined through consultation with surrounding properties and Auckland Transport.
5.2 Beresford Square Stages 0 to 8
5.2.1. Network Traffic Operation Effects
From Stage 0 to Stage 7, one lane in each direction will be maintained on Pitt Street as required by designation condition 28.1(a). These lanes will be provided on the eastern side of Pitt Street for all stages except for Stage 2 and 4 where the construction area on the western side will be opened to provide the two traffic lanes. Temporary traffic signals may be installed for the southbound approach of Pitt Street to Karangahape Road. These arrangements are not anticipated to create additional impact on the network traffic operations compared to the existing Main Works traffic management setup.
During Stage 8, a closure of both lanes on Pitt Street is required to complete the final streetscape and road pavement reinstatement This stage will be undertaken as night works over approximately two non-consecutive nights Condition 28.1(a) requires one lane of traffic to be retained in each direction on Pitt Street, unless otherwise agreed with Auckland Council. While this stage does not provide one lane in each direction on Pitt Street the Link Alliance will seek approval from Auckland Council with regards to this specific condition prior to undertaking any closures. With the works being undertaken over-night, the closure is not expected to result in significant impacts on the network traffic operations Emergency vehicle and local access for properties on Pitt Street will be maintained and detour routes around Pitt Street will be advised
In all stages one lane in each direction will be maintained on Beresford Square between Hopetoun Street and Day Street Local traffic between Day Street and Samoa Lane will be maintained as much as practically possible within the work area for vehicles accessing properties along Beresford Square and Samoa Lane as required by designation condition 28.2(c)(iii).
5.2.2. Pedestrian and Cyclist Effects
Pedestrian and cyclist access to properties will be maintained at all times as required by designation conditions 25.2(b), 25.3(f)(i) and 28.2(c)(i). Pedestrian movements between and on Beresford Square and Pitt Street will be provided on footpaths (existing or new) or protected walkways within work areas. The specific pedestrian diversions for each stage are shown in Figure 4 10 to Figure 4 17
Wherever possible pedestrian diversions will be shortened within the work area for pedestrians crossing Beresford Square on the western side of Pitt Street. This will be determined in the sitespecific TMP’s to limit the impact to pedestrian movements
No further cycling facilities are impacted due to the Beresford Square PRR works compared to the existing layout established by the Main Works
5.2.3. Property Access and Private Parking
The Beresford Square works are anticipated to impact vehicle access to the following properties:
• Samoa Lane (all stages)
• 1 Beresford Square (all stages)
• 27 Beresford Square (all stages)
• 16-18 Beresford Square (all stages)
• Poynton Terrace (Stage 2 and 4)
• 70-78 Pitt Street (Stage 2 and 4)
On-going vehicle access to properties will be maintained to the greatest extent possible as required by designation conditions 25.2(c), 25.3(f)(ii) and 25.3(g).
Where vehicle access to private property will require temporary closure to complete the works, landowners and occupiers will be consulted in advance as required by designation condition 28.2(c)(ii). This will may be required for the following properties:
• 1 Beresford Square (Stage 5 and 6.2)
• 27 Beresford Square (Stage 5 and 6.2)
• 16-18 Beresford Square (Stage 6.1)
• Samoa Lane (Stage 6.1)
For these properties, alternative parking around and on Beresford Square will be arranged and agreed upon.
5.2.4. Public Transport Impacts
The 18, 105 and 110 bus services currently travel along Pitt Street in the north-south direction The site-specific TMP’s for all stages will provide sufficient traffic lane width and test vehicle tracking for these bus services. Furthermore, the work areas for all stages on Pitt Street will have no impact on bus stop (ID 1544) located between Hopetoun Street and Greys Avenue
5.2.5. Public Parking and Loading
Approximately four CCPZ paid parking spaces (22.5m) between Hopetoun Street and Day Street will need to be temporarily removed in Stage 7 of the PRR works. If this parking removal is expected for longer than three weeks, then consultation will be undertaken with stakeholders and a traffic resolution prepared as per AT requirements
6. Monitoring
The travel time and congestion monitoring requirements for CRL are set out in designation condition 26. The processes and responsibilities in relation to monitoring for the PRR works are consistent with that for the Main Works, as detailed in Section 6 of Karangahape Station Main Works TAP DWP.
7. Consultation and Communication
The scope of the consultation and communication requirements for PRR works are consistent with that established for the Main Works, as detailed in Section 7 of the Karangahape Station Main Works TAP DWP.
The Link Alliance communications and engagement team will work with the construction and traffic management teams to ensure that the requirements set out in this TAP DWP Addendum are achieved.
25 | Karangahape Station and Public Realm Reinstatement
Appendix C: Site Specific Construction Noise and Vibration Management Plan
Karangahape Station and Public Realm Reinstatement
Draft Site Specific Construction Noise and Vibration Management Plan
CRL-KRD-RME-LKA-RPT-800018
Revision: A01 17 December 2021
Draft Site Specific Construction Noise and Vibration Management Plan
Draft Site Specific Construction Noise and Vibration Management Plan
CRL-KRD-RME-LKA-RPT-800018
This document is uncontrolled when printed. This document should be printed in colour
Revision Status
Revision Issue
A01 17/12/2021 Final for Council submission Shivam Jakhu Claire Drewery
Reviewed by: Claire Drewery Technical Director - Acoustics 17/12/2021
Approved by: Peter Roan Planning and Approvals Manager 21/12/2021
Karangahape Station and Public Realm Reinstatement
Introduction
This is a Site-Specific Construction Noise and Vibration Management Plan (SSCNVMP) and forms part of the Construction Noise and Vibration Delivery Work Plan (CNV DWP) for the Karangahape Station Main Works (ref CRL-KRD-RME-LKA-PLN-800021 dated 21/02/2020). This SSCNVMP will be updated once greater certainty on the timing and duration of high noise and vibration generating activities is known and consultation with affected receivers has been undertaken.
The updated SSCNVMP will be submitted to Auckland Council a minimum of 20 working days prior to the commencement of works that trigger the requirement for this SSCNVMP. This will include a record of consultation with affected receivers and will address each sub-section (a-f), as required by condition 37.5 and 38.5. The SSCNVMP will be developed in accordance with the established Auckland Council Subject Matter Expert (SME) and Independent Peer Review Process for the CRL project. This will include how the comments received from the AC SME and IPR have been taken into account.
This SSCNVMP provides a specific assessment of construction noise and vibration from the Public Realm Reinstatement (PRR) works that was not previously provided for as part of Karangahape Station Main Works CNV DWP.
The construction works required to reinstate the permanent aspects of the public space include the following:
• Construction of new stormwater
• Installation of utilities
• Construction of tree pits
• Installation of new road pavement
• Installation of new footpath pavements
• Landscaping works
• Installation of street furniture
The works will be undertaken in a staged manger, commencing as the current construction works are progressively completed (refer to Table 1-1). The total duration of works is approximately 18 months, commencing in Q3 2023. A detailed description of the PRR works is provided in the Karangahape Station PRR Construction Environmental Management Plan (CEMP) Addendum. This SSCNVMP should be read in conjunction with the Karangahape Station Main Works CNV DWP to which this document forms part of Appendix F, as it contains further details of the project, noise criteria, monitoring and general mitigation measures. An overview of the works and details of the construction methodology are contained in Section 3.
Table 1-1: Overview of Construction Works and Staging
Mercury
Stage
Stage 2 – Mercury Lane and Cross Street - Reinstate road profile of Mercury Lane and Cross Street - Utilities installs
Stage 6 – Beresford Square - Reinstate footpath - Streetscape - Tree grove
Stage 7 – CSA - Utilities installs - Reinstate the CSA - Remove site office
Stage 8 – Final streetscape - Final landscaping - Final streetscape - Complete mill topper
1.1 Objective
The objective of this SSCNVMP is to detail the best practicable option to avoid, remedy or mitigate adverse effects on receivers resulting from construction noise and/or vibration that does not comply with the Project Standards set out in Section 3 of the CNV DWP.
This SSCNVMP has been prepared in accordance with designation Conditions 37, 38, and 39
1.2 Site Plans
The extent of the PRR construction works is shown in Figure 1 1
Figure 1 1: Site location – Extent of public realm reinstatement (red hatched line) and construction support areas (blue)
Affected Receivers
Receivers where noise and/or vibration levels due to the Public Realm Reinstatement works within the project designation have the potential to exceed project noise or vibration standards, along with the relevant building uses, are listed in Table 2-1
Table 2-1: Affected receivers
*This is the Monday to Saturday 07:00 to 22:00 noise criteria. The majority of works will be carried out during this period. For residential receivers the noise limit is reduced to 65 dB LAeq & 80 dB LAFmax on Sundays and Public Holidays between 07:00 to 22:00 and to 60 dB LAeq & 75 dB LAFmax at all other times.
Activities
Construction activities for the Public Realm Reinstatement works are shown in Table 3-1.
Table 3-1 Public Realm Reinstatement construction methodology
Stage Details of Works Equipment Utilised
Utilities
Tree Pits
• To service the urban realm installations & divert main utilities a network is required
• Duct installations are completed using a combination of excavators, trucks (for concrete, and for spoil disposal and importing backfill materials), hand tools, trench shields and compaction equipment
• The installation of street lighting and other above ground traffic service installation is linked to the utility duct and cable work.
• For tree pits that are near services, 25 mm steel plates are to be installed to provide additional barrier between pit and service trenches
• Hydro excavation and pothole techniques will be used to expose tree pits when utilities are approached
• Excavations will be around 1.0-2.0 m
• Temporary supports will be installed around the utilities
• 5-14t excavators
• Trucks
• Plate compactors and/or small rollers
• Trench Shields
• Hand Tools
Road Pavement
• After completion of ground works - Subsoil drains are constructed along the edges of the road carriageway
• Basecourse material/layer is spread and compacted
• Testing undertaken on the subgrade and basecourse layer during construction
• Structural asphalt layers are constructed and the final 50mm layer of AC14 will be placed at the final phase of the works
• Line markings works are completed after the asphalt layer is laid
• Excavators (5T-20T)
• Excavators (10T-20T)
• Trucks (for concrete, spoil disposal and importing backfill materials)
• Plate compactors and/or small rollers
• Trench Shields
• Hand tools
• Hydrovac Truck
• Excavators
• Graters
• Plate/Roller compactors
• Asphalt paving plant
• Concrete breaker
• Concrete saw
Footpath Pavements
• Footpath pavements generally consist of basecourse layer, reinforced concrete layer & decorative layer
• The Basecourse layer (Cemented treated basecourse) is spread and compacted using excavators and small roller/plate compactors
• Structural concrete layer is constructed in segments to maintain pedestrian movements and concrete is delivered via trucks with concrete pumps
• Dust from placement of fill and bedding material is controlled via a watering system
• Decorative paving is constructed by cutting, placing, and mixing of stone pavers with Steintec Bedding
• To maintain pedestrian access to business and properties, night works may be required for the installation of pavers
• A mobile acoustic enclosure is used during all paver cutting
• Excavators(5-10T)
• Small roller/plate compactors
• Concrete pumps (Line or boom)
• Watering System
• Bedding material
• Mobile acoustic enclosure
• Concrete breaker
• Concrete saw
Stage
Landscaping
Road Furniture
Details of Works Equipment Utilised
• Duct from extraction and cutting operations is controlled via a watering system
• Landscaping works are completed from the adjacent traffic lane and are one of the final activities completed
• Trees are delivered by truck and planted by hand or using a Hiab Crane
• After the planting of trees, surface tree grilles or permeable coverings will be installed
• Road Furniture will be one of the final activities undertaken at each site
• Furniture will be delivered onto site and immediately installed
• Road furniture includes street lighting and signage, seating, rubbish bins, bicycle racks and drinking fountains
• Installation of street lighting signage and traffic signal will be carried out by specialist electricians
• Hiab Crane
• Hand tools
• Hiab crane
Details of the construction equipment that is likely to be used for the above activities and the associated noise levels can be found in Section 4.1 of the CNV DWP. Details of the equipment that is expected to generate high levels of vibration can be found in Section 4.2 of the CNV DWP.
Note that the equipment levels detailed in the CNV DWP are placeholders. All equipment will be measured operating independently when work commences on site and the actual equipment noise/vibration levels and model numbers recorded and updated within the respective tables in the CNV DWP1 .
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 and asphalt paving Cutting of pavers shall be undertaken during daytime construction hours.
1 The table will be updated as part of the CNV DWP annual review process.
Façade performance and internal noise levels
4.1 Noise
The Public Realm Reinstatement works are located close to a number of receivers such that internal noise levels will inevitably be high during some activities.
Use of a concrete saw, concrete breaker, plate compactor, roller compactor, and drilling equipment has the potential to exceed the Project Standards for construction noise. These high noise generating activities will occur intermittently. Noise levels will reduce from those presented in Table 4-1 during other construction activities.
An enclosure over high noise generating equipment, such as the concrete saw, is unlikely to be practical at all locations on site due to space restrictions. However, this will be reviewed on a caseby-case basis and, where practicable, enclosures will be utilised.
However, even with mitigation and management measures implemented and noise barriers installed as outlined in the CNV DWP, the noise levels predicted at the most exposed façade of a number of properties will still exceed the Project Standards by more than 5 dB during some construction activities. These properties are detailed in Table 4-1 along with an estimate of the current façade performance and the worst-case internal noise levels anticipated to be received during the use of concrete saws.
Detail on the timing and duration of high noise and vibration generating activities will be updated in the SSCNVMP once this information becomes available.
It is important that stakeholders receive advance communication of high noise generating activities. Refer to section 5 for the communication process.
Table 4-1: Estimated internal Noise levels
Address
238
Karangahape Road
Ground Floor: Various commercial retails >90 at most exposed area of façade during concrete cutting activities.
First floor and above: Residential Flats
246
Karangahape Road
Ground Floor and above: BK Hostel >90 at most exposed area of façade during concrete cutting activities.
Façade Build-up / Expected performance (dB Rw)
Main façade of retail spaces faces into the building atrium. Back of retail space is masonry with renovation works required. Estimated attenuation provided by the façade is around 35dB Rw.
>55 dBA (with doors and windows closed) Annoyance to staff and customers
>55 dBA (with doors and windows closed)
Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
External observation of the façade consists of 50% glazing and 50% masonry. Not known if mechanical ventilation is present within the property. Estimated attenuation
>60 dBA (with doors closed) Annoyance to staff and customers
Specific Mitigation Measures - Best Practicable Option (BPO)
Screening provided to ground floor by noise barriers around construction works.
Screening provided by temporary noise mats.
Noisy works to be scheduled outside of sleeping hours where practicable.
Manage unnecessary impact sounds.
Consultations have identified shift workers and retirees who sleep during the daytime within this building. Mechanical ventilation has been offered to residents as required occupying flats located long the façade overlooking the works.
Long term noise monitoring is currently installed at this property. The logger sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to manage noise from the construction site. It is expected this noise logger will remain in place for the duration of the PRR works.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
provide by the façade is around 30dB Rw with windows closed.
Specific Mitigation Measures - Best Practicable Option (BPO)
59 Pitt Street Ground floor: Vada, Waves, Fabriks, Tattoo Parlour, First floor: Graphics Design
>90 at most exposed area of façade during concrete cutting activities.
Ground Floor: Each shop’s façade consists around 80-100% single glazing windows with glazed doors. No mechanical ventilation available. Attenuation provided by the façade is estimated to be around 30dB Rw with windows and doors closed
First floor: Façade is double height with 50% single glazing and 50% masonry. Mechanical ventilation is available with openable windows. Estimated attenuation provided by the façade is around 30dB Rw with windows closed.
>60 dBA (with doors closed) Annoyance to staff and customers
Works will be intermittent in nature and will not occur directly outside hostel.
1. Noisy works to be scheduled outside of sleeping hours where practicable..
2.Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Noise barriers will be installed around the works which will provide screening to the ground floor
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact. Noisy works should ideally be scheduled before or after business opens for the day.
Long term monitoring has been installed at this location. The logger sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to manage noise from the
1 Cross Street Ground Floor and above: Multiple businesses and single residential >90 at most exposed area of façade during concrete cutting activities. 50% masonry and 50% single glazed windows. Openable windows with no mechanical ventilation. Estimated attenuation provided by the façade when windows closed is predicted to be around 25- 30 dB Rw.
>60 dBA (with doors closed) Annoyance to staff and customers
Specific Mitigation Measures -
(BPO)
1 Beresford Square Ground Floor and above: Commercial use2 >90 at most exposed area of façade during concrete cutting activities.
Based on external observations façade is around 40% double glazed openable windows and 60% masonry. Mechanical ventilation unknown. Estimated attenuation provided by the façade when windows closed is predicted to be around 35 dB Rw with windows closed.
>55 dBA (with windows closed) Annoyance to staff. Reduction in work efficiency and concentration, disturbance to meetings
construction site. It is expected this noise logger will remain in place for the duration of the PRR works.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
1. Noisy works to be scheduled outside of sleeping hours where practicable.
2. Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking, and compacting during noise sensitive periods.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Double glazing was installed by the landlord of 1 Beresford Square prior to the start of works.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works takes place. Noise levels may still
Specific Mitigation Measures - Best Practicable Option (BPO)
8-12 Beresford Square Ground Floor: Bravo
Hospitality, First Floor and above: Theta Inc >90 at most exposed area of façade during concrete cutting activities.
All levels are mechanically ventilated with 100% single glazed façade Estimated attenuation provided by the façade is predicted to be around 30 dB Rw.
>60 dBA. Annoyance to staff and customers, speech clarity may be affected. Reduction in work efficiency and concentration, disturbance to meetings
exceed the criteria whilst works are occurring outside neighbouring properties.
The installation of mechanical ventilation was offered to residents who are shift workers needing to sleep during the day and who occupy flats located along the façade overlooking the Beresford Square work site.
Noise barriers will be installed around the works which will provide screening to the ground floor.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Noise mats were installed at the balcony of one of the tenants (Theta Systems) on the first floor during the DWall works, this mitigation measure should be offered again to protect against noise in the reception area during the PRR works as its previous use was successful. Notice of noisy works to be provided at least 24 hours in advance. Long term noise monitoring has been installed at this building.
61 Pitt Street Ground Floor: Johnny
Feedback coffee shop >90 at most exposed area of façade during concrete cutting activities.
Coffee shop has no façade, shop opens with roller doors onto the street. No attenuation provided by the façade
>90 dBA dB. Disruption to business, staff and customers. Hearing damage.
Screening will be provided by temporary noise barriers, but high noise levels will be experienced within the building during some activities due to lack of façade.
Additional screening close to the open area of the façade is required but may not be possible to install without impacting access to the coffee shop or footpath outside.
Address
LAeq
65 Pitt Street Ground Floor: Tokyo Loco >90 at most exposed area of façade during concrete cutting activities.
Façade Build-up / Expected performance (dB Rw)
Expected Worst-Case Internal Noise Level
(dB LAeq) with Mitigation/ Potential Effects
Specific Mitigation Measures - Best Practicable Option (BPO)
4-6 Beresford Square Ground Floor: Northern Bar >90 at most exposed area of façade during concrete cutting activities.
Full single glazing façade with no mechanical ventilation. Open plan kitchen dining with extractor fan Door is kept open during summer for ventilation. Estimated attenuation with door closes is around 30dB Rw and with door open is around 20dB Rw.
Façade is masonry wall with around 95% single glazing and openable French doors. There is no mechanical ventilation to the property, only natural ventilation via French doors. The attenuation provided by the façade when doors closes is estimated around 30 dB Rw. The estimated façade performance with the door open is 15 dB Rw.
>60dBA during concrete cutting.
(Door Closed) Annoyance to staff and customers
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact. Noisy works should ideally be scheduled before or after business opens for the day.
Screening provided to ground floor by noise barriers around construction works.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
16-18 Beresford Square Ground Floor and above: Centurion Sauna1 >90 at most exposed area of façade during
Based on external observations facade is 90% single glazing and 10% masonry. Small areas of glazing are openable with trickle vents visible. Estimated façade
>60 dBA. Annoyance to users but potentially masked with background music during venue use
Noise barriers will be installed around the works which will provide screening to the ground floor. Noisy activities outside this property to be scheduled before 3pm, where practicable.
Long term monitoring has been installed at this location. The logger sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to manage noise from the construction site. It is expected this noise logger will remain in place for the duration of the PRR works.
>65dBA Annoyance and disturbance to staff and customers
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
attenuation is around 20-25 dB Rw with windows closed. throughout the day and night-time.
Specific Mitigation Measures - Best Practicable Option (BPO)
243 Karangahape Road
Ground floor: Pitt St Pub >90 at most exposed area of façade during concrete cutting activities.
First Floor and above: Calendar Girls 1
Façade is 50% masonry and 50% single glazing windows. Air lock entrance with wooden door kept open onto the glazing door within. Mechanical ventilation is available. Attenuation provided by the façade is estimated to be around 35dB Rw with door closed.
Observation from the exterior show façade consists of 70% masonry with 30% glazing. Unknown if mechanical ventilation is present inside or if windows are openable. Estimated attenuation provided by façade is predicted to be around 30-35dB Rw with windows and doors closed.
>55 dBA. Annoyance to staff and customers but not to a level that interferes with businesses with background music
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required to determine if noisy works can be carried out at a time that least impacts them, and if additional mitigation on property is required.
Noise barriers will be installed around the works which will provide screening to the ground floor.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Noisy works to be scheduled before peak operating period (afternoons and evenings Thursdays to Sunday)
>55 dBA. Annoyance to staff and customers but not to a level that interferes with businesses with background music
Noise barriers will be installed around the works which will provide screening to the ground floor.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Background music may be played inside at a level which will mask construction noise.
LAeq
22 Beresford Square First Floor and above:
Residential flats >90 at most exposed area of façade during concrete cutting activities.
Façade consists of 40% masonry and 60% single glazed openable windows and a single glazed sliding door facing the works location. Estimated attenuation provided by the façade is around 30dB Rw.
>60dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels during utility works are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city. Noisy works will occur outside the flats for a period of days.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Noisy works to be scheduled outside of sleeping hours where practicable.
Manage unnecessary impact sounds.
Consultation for this building during the Main Works has identified some residents are shift workers and will be sleeping during the day Mechanical ventilation has been offered for bedrooms that are located along the facade overlooking the Beresford Square work site. One resident on the 3rd floor agreed and has had mechanical ventilation installed.
18 East Street Ground Floor: Residential >90 at most exposed area of façade during concrete cutting activities.
Façade is a lightweight partition weatherboard with single glazed windows. Access to back façade where most impacted was not given. Estimated façade attenuation is around 25 dB Rw
>65 dBA. Disturbance to users and potential annoyance to staff and customers.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside whilst concrete cutting works take place. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Specific Mitigation Measures - Best Practicable Option (BPO)
9 Mercury Lane Ground Floor and above: Mercury Theatre >90 at most exposed area of façade during concrete cutting activities.
Facade consists of 70% masonry and 30% glazing. Large gaps are found around the emergency exit doors. No mechanical ventilation is available. This building is naturally ventilated via a roof system. Attenuation provided by the façade is estimated around 35 dB Rw.
>55 dBA. Annoyance to staff and customers but not to a level that interferes with businesses with loud background music
1. Noisy works to be scheduled outside of sleeping hours where practicable.
2. Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking, and compacting during noise sensitive periods.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
The following mitigation measures are recommended: Emergency exit doors and any air gaps to be properly sealed.
Noisy works to be scheduled outside of sleeping hours where practicable.
Manage unnecessary impact sounds.
Minimise periods of concrete cutting and breaking during noise sensitive periods and use of localised enclosure where practicable.
Communications team to determine venue use for the building and for works to be scheduled for a time that causes least impact on users.
A long-term noise monitor has been installed at the building across the road from this one which will be exposed to similar noise levels.
LAeq
19 Beresford Square Ground floor: Hopetoun Alpha 2 >90 at most exposed area of façade during concrete cutting activities.
51 Pitt Street Ground floor Commercial retail >90 at most exposed area of façade during concrete cutting activities.
Based on external observations façade is set back from the street and seems 90% masonry with a single access door, and 10% double height windows. Presence of mechanical ventilation unknown. Estimated façade attenuation is predicted to be around 35 dB Rw with windows closed.
The building is a historic construction. The façade is comprised of masonry construction with 35% single glazing. Estimated Façade sound reduction is 30 dB Rw
>55 dBA (with doors closed) Annoyance to staff and customers.
>60 dBA. Annoyance to Staff and customers
Noise barriers will be installed around the works which will provide screening to the ground floor. Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
283 Karangahape Road Ground Floor: Samoa Tourism Authority 1 >90 at most exposed area of façade during
Observation from the exterior show façade is 60% light weight cladding with 25% glazing and 15% open with shutters. Use around façade is unknown but
>65 dBA during concrete cutting. Annoying and disturbing for residents. Sleep
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required with affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
LAeq
concrete cutting activities.
Façade Build-up / Expected performance (dB Rw)
82 Pitt Street Ground Floor: Second-hand bookshop >90 at most exposed area of façade during concrete cutting activities.
mechanical vents are visible. Estimated attenuation based on observation is predicted to be around 25 dB Rw with windows and doors closed.
disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
Façade comprised of approximately 60% glazing and 40% masonry. Estimated façade sound reduction 25 dB Rw with windows and doors closed
>65 dBA during concrete cutting. Annoyance to staff and customers, speech clarity may be affected
Specific Mitigation Measures - Best Practicable Option (BPO)
68 Pitt Street Ground Floor and above: Retail 3 >90 at most exposed area of façade during
Observation from exterior shows façade consists of around 20% glazing and 80% masonry. Unknown if mechanical
>55 dBA with door closed. Annoyance to customers
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required with affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Samoa house contains a theatre. A foam packing material was installed around the edges of windows to help insulate against noise. The tenants were happy with the solution and reported that theatre performances went ahead without issues.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place.
Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required with affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening
ventilation is present. Attenuation provided by the façade is estimated to be around 35 dB Rw with windows and doors closed.
84 Pitt Street Ground Floor: Checks Retail clothing store
>90 at most exposed area of façade during concrete cutting activities.
The building is a historic construction. The façade is comprised of masonry construction with 35% single glazing. Estimated Façade sound reduction is 30 dB Rw
>60 dBA during concrete cutting. Annoyance to staff and customers.
Specific Mitigation Measures - Best Practicable Option (BPO)
>90 at most exposed area of façade during concrete cutting activities.
Façade comprised of approximately 60% glazing and 40% masonry. Estimated façade Sound reduction 25 dB Rw with windows and doors closed
>65 dBA. Annoyance to staff and customers.
provided by noise barriers will be reduced at first floor level and above.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside whilst concrete cutting works take place.
Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation required with affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Noise barriers will be installed around the works which will provide screening to the ground floor.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact. Noisy works to be scheduled outside business hours where possible
Noise barriers will be installed around the works which will provide screening to the ground floor.
Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
LAeq
70-76 Pitt Street First Floor and above: Chatham Apartments>90 at most exposed area of façade during concrete cutting activities.
Specific Mitigation Measures - Best Practicable Option (BPO)
80 Pitt Street Ground Floor: Flying Out Records >90 at most exposed area of façade during concrete cutting activities.
The building is a masonry construction with large sash windows. The windows are approx. 40% of the facade have lightweight glass and no seals. No mechanical ventilation is available. Estimated attenuation with windows closed are around 25 dB Rw on Level 1.
Façade consists of 50-70% single glazing windows with natural ventilation reliant on keeping the doors open. Estimated attenuation with doors closed is around 25 dB Rw and with door open is around 15 dB Rw.
>65 dBA. Annoyance to staff and customers.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact. Noisy works to be scheduled between 8am and 10am before business open.
Noise barriers will be installed around the works which will provide screening to the ground floor. Noisy works to be scheduled outside of sleeping hours where practicable.
Manage unnecessary impact sounds.
>65 dBA. Annoyance to staff and customers.
40 Pitt Street Central Fire Station
85-90 at most exposed area of façade during concrete cutting activities.
The building is a historic construction housing the Central Fire station. The building is masonry construction with 35% single glazed sash windows (excluding the Fire Engine bay)
55-60 dBA. Annoyance to staff.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Consultation should take place prior to the start of works to understand the building uses and determine most appropriate times to undertake noisy works.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
First Floor: Residential 85-90 at most exposed area of façade during concrete cutting activities.
External observation shows that the façade is constructed of 90% glazing and 10% masonry. The estimated sound reduction of the façade is 25 dB Rw with windows and doors closed
Specific Mitigation Measures - Best Practicable Option (BPO)
39 Pitt Street Ground floor and above:
Residential2 85-90 at most exposed area of façade during concrete cutting activities.
The façade consists of approximately 15% glazing and 80% Masonry. Unknown whether mechanical ventilation is present. Estimated attenuation with windows closed is 35dB Rw
65-70 dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
50-55 dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to exceed the 35 – 40 dB
Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided by 1.8m high noise barrier with additional length of barrier angled into the site. Noisy activities must be scheduled for a time outside sleeping hours. Manage unnecessary impact sounds. It is noted this building will be partially demolished and may be unoccupied during these works.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above.
Impacted mainly by Concrete cutting which will be intermittent in nature.
1. Manage unnecessary impact sounds.
2. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
LAeq
Façade Build-up / Expected performance (dB Rw)
Expected Worst-Case Internal Noise Level (dB LAeq) with Mitigation/ Potential Effects Specific Mitigation Measures -
LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
78 Pitt Street Methodist Church 85-90 at most exposed area of façade during concrete cutting activities.
Façade consists of 30% stain glass windows and 70% masonry. Relies on natural ventilation. Estimated attenuation with doors closed is around 30 dB Rw.
55-60 dBA.
Annoyance to staff and patrons.
3. Noisy works to be scheduled outside of sleeping hours where practicable.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties.
Ongoing communication regarding timings of works and advance notice to be given.
47 Pitt Street Fire Station 85-90 at most exposed area of façade during concrete cutting activities.
The façade to the Fire Engine bays is constructed entirely of plastic sheeting. The rest of the building is predominantly masonry, with about 20% glazing. The estimated Façade sound reduction is 35 dB Rw.
50-55 dBA.
Annoyance to staff and Reduction in work efficiency and concentration, disturbance to meetings
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
14 East Street Ground Floor: Studio Q 80-85 at most exposed area of façade during concrete cutting activities.
The façade is comprised of approximately 40% glazing and 60% masonry. The estimated sound reduction of the façade is Rw 30.
50-55 dBA.
Annoyance to staff and Reduction in work efficiency and concentration,
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above. Impacted mainly by Concrete cutting which will be intermittent in nature.
Specific Mitigation Measures - Best Practicable Option (BPO)
disturbance to meetings 2. Minimise periods of concrete cutting, breaking, and compacting during noise sensitive periods.
3. Noisy works to be scheduled outside of sleeping hours where practicable.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
First Floor: Residential Flats 80-85 at most exposed area of façade during concrete cutting activities.
Façade consists of masonry and single glazing. Estimated attenuation provided by the façade is around 30dB Rw.
29 East Street Ground floor: Carpark, Electric Bike Team, International 80-85 at most exposed area of façade during concrete cutting activities.
Observation from the exterior shows the façade is comprised of 90% glazing. The estimated sound reduction of façade is approximately 25 dB Rw
50 - 55dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours. Internal noise levels during utility works are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city. Noisy works will occur outside the flats for a period of days.
55-60 dBA
Impacted mainly by concrete cutting and works will be intermittent in nature. Works will occur at the back of the residential flats during daytime hours only.
1. Noisy works to be scheduled outside of sleeping hours where practicable.
2. Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
Locate stationary equipment such as generators away from flats. Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above. Impacted mainly by Concrete cutting which will be intermittent in nature.
Earth Sciences IESE Ltd
36 Day Street Residential ground floor and above 80-85 at most exposed area of façade during concrete cutting activities.
21 East Street Ground Floor and above: UnoLoco Event Management 80-85 at most exposed area of façade during concrete cutting activities.
Observation from exterior shows façade consists of around 80% glazing and 20% masonry with metal roller doors at ground level. Unknown if mechanical ventilation is present. Attenuation provided by the façade is estimated to be around 25 dB Rw with windows and doors closed.
55-60 dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
Office on first floor has exposed steel roof with no insulation and exposed mechanical ventilation system. Façade facing the works consists mainly of single glazing with openable windows making up 80% of the façade and 20%
55-60 dBA (Door and windows closed). Annoyance to staff and customers. Reduction in work efficiency and concentration,
1. Manage unnecessary impact sounds.
2. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
3. 24 hours advance notification for noisy activities
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above. Impacted mainly by Concrete cutting which will be intermittent in nature.
1. Manage unnecessary impact sounds.
2. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
3. Noisy works to be scheduled outside of sleeping hours where practicable.
Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. The benefit of screening provided by noise barriers will be reduced at first floor level and above. Impacted mainly by Concrete cutting which will be intermittent in nature.
1. Manage unnecessary impact sounds.
LAeq
Façade Build-up / Expected performance (dB Rw)
41 Pitt Street Unoccupied, commercial building. 80-85 at most exposed area of façade during concrete cutting activities.
2 Cross Street Ground floor unoccupied.
80-85 at most exposed area of façade during concrete cutting activities.
masonry. Windows are usually left open during summer for ventilation. Estimated façade attenuation with windows closed is around 25 dB Rw.
Specific Mitigation Measures - Best Practicable Option (BPO)
27 East Street Residential ground floor and above
80-85 at most exposed area of façade during concrete cutting activities.
Unoccupied. Façade comprised of approximately 40% glazing and 60% masonry. Estimated facade sound reduction 30 dB Rw with windows and doors closed
Observation from exterior shows façade consists of around 25% glazing and 75% masonry with metal roller doors at ground level. Unknown if mechanical ventilation is present. Attenuation provided by the façade is estimated to be around 30 dB Rw with windows and doors closed.
Façade is a lightweight partition weatherboard with single glazed windows. Estimated façade attenuation is approximately 25 dB Rw.
50-55 dBA (Door Closed). Unoccupied
2. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods.
3. 24 hours advance notification for noisy activities to co-ordinate sound recording events within office. Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Unoccupied at the time of writing. Communication/consultation to take place with building owner prior to start of PRR works to determine nature of occupancy and appropriate mitigation measures.
55-60 dBA (Door Closed)
55-60 dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when works are directly outside. Building shielded from most works areas. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Localised enclosure around noisy equipment to be considered if practicable. 24 hours advance notification to be given before noisy works takes place.
Screening provided to ground floor by noise barriers around construction works. Impacted mainly by concrete cutting. Works will be intermittent in nature. Works will occur at the back of the residential flats during daytime hours.
1. Noisy works to be scheduled outside of sleeping hours where practicable.
day. Internal noise levels are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
Specific Mitigation Measures - Best Practicable Option (BPO)
23 East Street Ground Floor: European motor services 80-85 at most exposed area of façade during concrete cutting activities.
Façade is set back approx. 13m from the roadside. 50% façade consists of one small single glazed window in a concrete blocks wall shield by a storage container overhead, and 50% façade is shutter roller door which is kept open. No mechanical ventilation available. Estimated attenuation provide 20-25dB Rw with shutters closed and 10-15 dB Rw with shutters open.
70-75 dB with shutters open. 55 – 60 dB (with shutters closed)
Annoyance to staff and disruption of carrying out mechanical services
2. Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods before 8am and after 6pm.
4.Locate stationary equipment such as generators away from building.
Screening provided to ground floor by noise barriers around construction works. Impacted mainly by concrete cutting and works will be intermittent in nature throughout the duration of early works. 24 hours advance notification for noisy activities. Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
25 East Street Residential ground floor and above 80-85 at most exposed area of façade during concrete cutting activities.
Façade is a lightweight partition weatherboard with single glazed windows. Estimated façade attenuation is approximately 25 dB Rw. 55-60 dBA. Annoying and disturbing for residents. Sleep disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels are likely to
Screening provided to ground floor by noise barriers around construction works. Impacted mainly by concrete cutting. Works will be intermittent in nature. Works will occur at the back of the residential flats during daytime hours.
1. Noisy works to be scheduled outside of sleeping hours where practicable.
2.Manage unnecessary impact sounds.
256 Karangahape Road
LAeq
Façade Build-up / Expected performance (dB Rw)
229 Karangahape Road
Ground Floor: Mithaiwala commercial 80-85 at most exposed area of façade during concrete cutting activities.
External observations shows establishment has open façade.
exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city.
80-85 dBA during concrete cutting.
Specific Mitigation Measures - Best Practicable Option (BPO)
258-264
Karangahape Road
Ground Floor: Commercial retail 80-85 at most exposed area of façade during concrete cutting activities.
The building is a historic construction. Façade comprised of approximately 40% glazing and 60% masonry. Estimated façade Sound reduction 30 dB Rw with windows and doors closed
50-55 dBA (Door Closed) Annoyance to staff and customers
3.Minimise periods of concrete cutting, breaking, and compacting during noise sensitive periods before 8am and after 6pm.
4.Locate stationary equipment such as generators away from building.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Ground Floor: Various commercial retails
First Floor: 80-85 at most exposed area of façade during concrete cutting activities.
The ground floor retail establishments have facades comprised of glazing and doors. Estimated sound reduction: 25 dB Rw. First floor is comprised of approximately 60% glazing and
Ground Floor 55-60 dBA with door closed. Annoyance to staff and customers
First Floor: 50-55 dBA
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the
80-85 at most exposed area of façade during concrete cutting activities.
80-85 at most exposed area of façade during concrete cutting activities.
Façade comprised of approximately 25% glazing and 75% masonry. Estimated facade sound reduction 30 dB Rw with windows and doors closed
Façade comprised of approximately 40% glazing and 60% masonry. Estimated facade sound reduction 30 dB Rw with windows and doors closed
55-60 dBA with door and windows closed. Annoyance to staff and customers
50-55 dBA (Door Closed)
Annoyance to staff and customers
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works take place at closest point of works extent. Building shielded from most works areas.
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
15-19 East Street Ground and first floor, commercial.
80-85 at most exposed area of façade during concrete cutting activities.
Façade comprised of approximately 60% glazing and 40% masonry. Estimated façade Sound reduction 25 dB Rw with windows and doors closed
55-60 dBA with door closed. Annoyance to staff and customers
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
251-253 Karangahape Road
Ground Floor: The Hemp Store & VAPO
LAeq
80-85 at most exposed area of façade during concrete cutting activities.
Façade comprised of approximately 75% glazing and 25% masonry. Estimated facade sound reduction 25 dB Rw with windows and doors closed
55-60 dBA with door closed. Annoyance to staff and customers
12 East Street Ground floor and above: Residential 2 80-85 at most exposed area of façade during concrete cutting activities.
Observation from the exterior indicates façade facing work sites is 100% masonry. Back of building not accessible. Estimated attenuation based on observation of façade is around 35 dB Rw with windows closed.
Ground floor:45 - 50 dB during concrete cutting/ breaking. Disruption if carried out during nighttime/early morning hours or for residents that sleep during the day. Internal noise levels during utility works are likely to exceed the 35 – 40 dB LAeq criteria of AS2107:2016 for sleeping areas in the inner city. Noisy works will occur outside the flats for a period of days
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Works will be intermittent in nature.
1. Noisy works to be scheduled outside of sleeping hours where practicable.
2. Manage unnecessary impact sounds.
3. Minimise periods of concrete cutting, breaking and compacting during noise sensitive periods. Further consultation will take place with the affected parties before works begin to determine if noisy works can be scheduled for a time that causes least impact.
Address
LAeq
Façade Build-up / Expected performance (dB Rw)
221 Karangahape Road
Note:
Posh Nails and Spa 75-80 at most exposed area of façade during concrete cutting activities.
Façade comprised of approximately 75% glazing and 25% masonry. Estimated facade sound reduction 25 dB Rw with doors closed
50-55 dBA with door closed. Annoyance to staff and customers
(BPO)
Screening provided to ground floor by noise barriers around construction works. Worst-case noise levels will be intermittent in nature and will occur when concrete cutting works are directly outside. Noise levels may still exceed the criteria whilst works are occurring outside neighbouring properties. Consultation required with the affected party before works begin to determine if noisy works can be scheduled for a time that causes least impact.
1. Relationship needs to be managed, meeting time to be arranged – façade observations from the exterior only
2. Not consulted as owner/manager was unavailable – façade observations from exterior only
3. Not consulted as property is currently vacant – façade observations from exterior only.
4.2 Vibration
In addition to the general vibration mitigation measures outlined in Section 6 of the CNV DWP, the specific vibration mitigation measures outlined in Table 4-2 shall be implemented if the initial on-site vibration monitoring at the closest building foundations demonstrates that the building damage vibration limits will be exceeded.
Table 4-2: Vibration Mitigation Measures
Equipment/process
Excavators, bobcats, loaders
Jack-hammers, hammer-drills
Vibration control measures
Grease tracks regularly.
Avoid unnecessary revving of engines and banging of buckets on the ground.
Use smaller equipment where possible.
Use smaller equipment where possible
Roller compactors (8T-14T), plate compactor Use a smaller compactor, less than 10t
Site specific vibration mitigation measures are included in Table 4-3.
Table 4-3: Site specific vibration mitigation measures
Vibration may be felt within 238 Karangahape Road during the use of excavators and compactors. High vibration emitting activities to be scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 19 Beresford Square during the use of excavators and compactors within 15m of the building. However, vibration will be intermittent in nature and over a limited duration of 5 days per stage. Further liaison will take place and highvibration emitting activities scheduled outside of sensitive hours, when building occupants may be affected when venue is operating.
Vibration may be felt within 1 Cross Street during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
1 Cross Street 2 Historic/Vibration Sensitive
9 Mercury Lane 2 Historic/Vibration Sensitive
A vibration logger is installed inside 1 Cross Street, with a trigger alert level set at 2.5 mm/s. The device sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to help manage vibration from the construction site. The monitoring results, along with a summary of exceedances recorded, are provided in a monthly report to Auckland Council. It is expected this vibration logger will remain in place for the duration of the PRR works.
Vibration may be felt within 9 Mercury Lane during the use of excavators and compactors. Long term monitoring has been installed at property due to vibration concerns as identified in Appendix E of the CNV DWP and proximity to all construction stages. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable. Advance notice to be given during high-vibration emitting activities.
A vibration logger is installed inside the Mercury Lane Theatre, with a trigger alert level set at 2.5 mm/s. The device sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to help manage vibration from the construction site. The monitoring results, along with a summary of exceedances recorded, are provided in a monthly report to Auckland Council. It is expected this vibration logger will remain in place for the duration of the PRR works.
Vibration may be felt within 246 Karangahape Road during the use of excavators and compactors. High vibration emitting activities to be scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 59 Pitt Street during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
68 Pitt Street 4 Historic/Vibration Sensitive
235 Karangahape
4 Historic/Vibration Sensitive
Vibrations may be felt within 68 Pitt Street during the use of excavators and compactors. Further liaison will take place and high vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibrations may be felt within 235 Karangahape Road during the use of excavators and compactors. Further liaison will take place and high vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
84 Pitt Street 4 Historic/Vibration Sensitive
82 Pitt Street 4
Historic/Vibration Sensitive
Vibration may be felt within 84 Pitt Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 82 Pitt Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
80 Pitt Street 4 Historic/Vibration Sensitive
1 Beresford Square 4
Historic/Vibration Sensitive
Vibration may be felt within 80 Pitt Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 1 Beresford Square during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable. Long term monitoring to be installed at property due to vibration concerns as identified in Appendix E of the CNV DWP and proximity to all construction stages.
70-76 Pitt Street 4 Historic/Vibration Sensitive
61-65 Pitt Street
Sensitive
Vibrations may be felt within 70-76 Pitt Street during the use of excavators and compactors. Further liaison will take place and high-vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 61-65 Pitt Street during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable. Long term monitoring to be installed at this property.
A vibration logger is installed inside the Johnny Feedback shop, with a trigger alert level set at 2.5 mm/s. The device sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to help manage vibration from the construction site. The monitoring results, along with a summary of exceedances recorded, are provided in a monthly report to Auckland Council. It is expected this vibration logger will remain in place for the duration of the PRR works.
Vibrations may be felt during the use of excavators and compactors. Further liaison will take place and high-vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping.
Vibration may be felt within 51 Pitt Street during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 4-6 Beresford Square during the use of excavators and compactors. Further liaison will take place and high-vibration emitting activities scheduled before 3pm, when building occupants may be affected after opening hours. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 8-12 Beresford Square during the use of excavators and compactors. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 22 Beresford Square during the use of excavators and roller compactors within 8m of the building. However, vibration will be intermittent in nature and over a limited duration of 5 days per stage. Monitoring will be carried out once construction works begin within 8 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select
16-18 Beresford Square
40 Pitt Street
Sensitive
low vibration-emitting equipment where practicable. Further liaison will take place and high-vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping.
Vibration may be felt within 16-18 Beresford Square during the use of excavators and compactors. Further liaison will take place and high-vibration emitting activities scheduled outside of sensitive hours, when building occupants may be affected when venue is operating.
Vibration may be felt at the rear of 283 Karangahape Road during the use of excavators and compactors. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibrations may be felt within 40 Pitt Street during the use of excavators and compactors. Further liaison will take place and high-vibration emitting activities scheduled outside of early morning and evening hours, when building occupants may be sleeping. Monitoring will be carried out once construction works begin within 15 metres of the building to determine the actual levels of vibration from the equipment used. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.A vibration logger is installed inside the Fire Station, with a trigger alert level set at 2.5 mm/s. The device sends alerts to the construction team when the trigger alert level is exceeded. The construction team uses this information to help manage vibration from the construction site. The monitoring results, along with a summary of exceedances recorded, are provided in a monthly report to Auckland Council. It is expected this vibration logger will remain in place for the duration of the PRR works.
18 East Street 8 Historic/Vibration Sensitive
27 East Street 13 Historic/Vibration Sensitive
Vibration may be felt during the use of excavators and compactors within 15m of the building. However, vibration will be intermittent in nature and over a limited duration of 5 days per stage. Further liaison will take place and high-vibration emitting activities scheduled outside of sensitive activities and events when building occupants may be affected.
Vibration may be felt within 27 East Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be
given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 25 East Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 229 Karangahape Road during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
23 East Street 13 Historic/Vibration Sensitive
78 Pitt Street 13 Historic/Vibration Sensitive
Vibration may be felt within 23 East Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Vibration may be felt within 78 Pitt Street during the use of excavators and compactors within 15m of the building. Vibrations will be intermittent in nature. Advance notice to be given for high-vibration emitting activities. The Project team will review the construction methodology and select low vibration-emitting equipment where practicable.
Communication and Consultation
Section 7 of the CNV DWP details the communication and engagement procedures in relation to construction noise and vibration effects. The complaints process is detailed in Section 7.2 of the CNV DWP
Consultation with affected stakeholders regarding the PRR works has not yet taken place at the time of writing of this document. It is likely that changes to building occupants, uses and hours of operation due to the Covid-19 pandemic will have happened between the time of writing of this SSCNVMP and the start of the PRR works.
Consultation for the PRR works will take place prior to the commencement of the PRR works, and generally following the processes mapped out in the Communication and Consultation Plan (CCP). This will involve a programme of targeted engagement that provides affected stakeholders with advanced notice on works staging, activities, programme and duration. The discussions will include possible solutions to alleviate stakeholder concerns. Outcomes and resultant actions of these discussions will be used to update Table 4-1. Where any comments by stakeholders have not been incorporated, the reason for this will be set out. An updated SSCNVMP will be submitted to Council with a record of this consultation prior to construction in accordance with the process summarised in Section 1.
Additional to the engagement above, at least two weeks prior to high noise generating activities taking place within 50m of the receivers identified in Table 4-1, advance communication of the works shall be provided to the affected receivers (unless a different notice period has been agreed upon during consultation). The communication shall set out the total duration of the noisy works, the likely duration of high noise generating activities immediately adjacent to the receiver, and any measures being taken to mitigate noise and vibration. Confirmation shall be provided 48 hours prior to the works commencing.
Similarly, at least two weeks prior to high vibration generating activities taking place within 15m of the receivers identified in Table 4-3, advance communication of the works shall be provided to the affected receivers (unless a different notice period has been agreed upon during consultation). The communication shall set out the total duration of the vibration generating works, the likely duration of high vibration generating activities immediately adjacent to the receiver, and any measures being taken to mitigate vibration. Confirmation shall be provided 48 hours prior to the works commencing.
Monitoring
Section 8 of the CNV DWP provides details of the methodology for noise and vibration monitoring.
6.1 Noise Monitoring
Noise monitoring will be carried out when use of the concrete saw and concrete breaker begins within 30 meters of the buildings identified in Table 6-1. The monitoring will be carried out at first floor level unless it is not possible to gain access.
Table 6-1: Noise Monitoring Locations
1 Cross Street
9 Mercury Lane
14 East Street
from façade of building
from façade of building
from façade of building
238 Karangahape Road 1m from façade of building
22 Beresford Square 1m from façade of building
1 Beresford Square 1m from façade of building
59 Pitt Street 1m from façade of building
61 - 65 Pitt Street 1m from façade of building
70 – 76 Pitt Street 1m from façade of building
25 East Street 1m from façade of building
18 East Street 1m from façade of building
8-12 Beresford Square 1m from façade of building
59 Pitt street 1m from façade of building
70-76 Pitt Street 1m from façade of building
19 Beresford Square 1m from façade of building
251-253 Karangahape road 1m from façade of building
258-264 Karangahape Road 1m from façade of building
82-84 Pitt Street 1m from façade of building
36 Day Street 1m from façade of building
6.2 Vibration Monitoring
Vibration monitoring will be carried out when works begin on site to determine actual equipment vibration levels and the attenuation provided by local ground conditions. If the initial vibration monitoring demonstrates that the emission radius for the excavator is similar to that identified in the CNV DWP, then the monitoring as detailed below will be carried out. If this monitoring demonstrates that vibration levels are significantly lower, then fewer properties may require monitoring. If they are higher, more properties may require monitoring.
Vibration monitoring will be carried out at the following receivers when use of the roller compactor occurs within 15 meters of these buildings:
