Basin Bridge Project: Assessment of Environmental Effects ... · Volume 2: Assessment of...

481 Volume 2: Assessment of Environmental Effects

Basin Bridge Project

Wellington Northern Corridor RoNS

Part H Environmental Management and Monitoring

34 Environmental Management and Monitoring

Overview

The purpose of this Chapter is to set out the environmental management and monitoring measures relating to the RMA designation and consent conditions that will be in place during the construction and operation of the Project.

The integrated design process that has been undertaken to date will enable the Project to deliver beneficial effects and has enabled many adverse environmental effects to be avoided or mitigated. However this process cannot, on its own, deliver the benefits or ensure that all potential adverse effects are adequately addressed.

The benefits will be delivered, and the adverse effects further mitigated, through careful detailed design and the management of the construction and operation of the Project.

The delivery framework contained in this Chapter provides an overview of the detailed design process and of construction management. It has been formulated to, in part, ensure that the outcomes intended in the Project design, and illustrated in the application drawings, are delivered.

The delivery framework identifies the detailed design process that will occur if the designation is confirmed and resource consents granted. This includes detailed urban and landscape design which is critical to the success of the Project.

The delivery framework also sets out the process for the Project’s construction management plans, which will be finalised ahead of construction commencing and which comprise two tiers being:

an overarching Construction Environmental Management Plan (CEMP); and

a series of topic specific management plans.

Proposed construction management plans have been prepared (see Volume 4) and explain how potential construction environmental effects will be managed. The proposed topic specific management plans have been prepared by the technical experts, based on their assessment of effects and the proposed construction methodology in Appendix A of the CEMP.

The construction management plans also outline the environmental monitoring that is to be undertaken prior to and during construction to monitor potential effects. The audit and update of the construction management plans based on monitoring results provides a mechanism through which improved mitigation measures can be implemented, if necessary.




Implementation of the delivery framework is provided for in the proposed designation and resource consent conditions. These conditions will ensure that the anticipated benefits of the Project are achieved and that potential adverse effects are adequately and appropriately avoided, remedied or mitigated.

34.1 Introduction

The assessment of environmental effects in Part G of the AEE has identified a wide range of positive and adverse environmental effects. These may result from the Project’s design, construction or operation. The integrated design process that has been undertaken to date, and is described in Part G of the AEE, has enabled many of the adverse effects to be avoided, where practicable, or mitigated. However this has not been able to address all potential adverse effects.

This Chapter outlines the further measures that will be undertaken to avoid, remedy or mitigate adverse effects of the Project before, during and after construction. To this end it provides information on the following:

the overall Project delivery framework ;

the detailed design process;

the proposed construction management plan framework;

a summary of the measures proposed to adequately avoid, remedy or mitigate potential adverse effects; and

a summary of the monitoring measures proposed in the various technical reports and management plans; and the suite of measures to avoid, remedy or mitigate potential effects, outlined in this Chapter which will be formalised through the designation and resource consent conditions. Proposed conditions are set out in the following Chapter 32.

34.2 Project delivery framework

Key to the management of environmental effects is the development and implementation of a suite of measures that include conditions, management plans and monitoring. This is referred to as the Project delivery framework. The delivery framework aims to provide consistency with NZTA’s environmental objectives, manage areas of environmental sensitivity, recognise environmental risk issues, and to identify the mechanisms to avoid, remedy or mitigate the actual and potential effects of the Project.

This Chapter identifies the principles, methods and plans to be developed by the NZTA (or its nominated contractors) at the time that detailed design and finalisation of the




construction methodology occurs, and the associated monitoring and processes for verification. Figure 34-1 illustrates the overall process for delivery of the Project.




Figure 34-1 Project Delivery Framework




34.2.1 Principles for Project delivery

The following principles form the basis for the development of the plans and conditions for the delivery, operation and maintenance of the Project:

All works are to be undertaken in compliance with current New Zealand standards and legislation;

The construction and operation of the Project will avoid, remedy or mitigate adverse effects;

An integrated team approach has been adopted and will continue through specimen and final Project design and as methods to avoid, remedy or mitigate actual and potential effects are reviewed and updated; and

Each technical specialist, consultant, or contractor involved in the Project has equal responsibility to avoid, remedy or mitigate adverse effects.

In addition to these principles, NZTA will maintain on-going communication with:

The local authorities responsible for monitoring and enforcing conditions placed on the designation and resource consents;

Directly affected landowners;

Tangata Whenua;

Key stakeholders and;

The community.

The parties involved and the processes to be used for this communication are set out in section 5 of the Construction Environmental Management Plan.

34.3 Detailed Design

Upon confirmation of the designation and resource consent conditions, detailed design of the Project will be undertaken. This will result in detailed drawings and specifications that enable the Project to be constructed, and therefore the benefits of the Project to be realised. The detailed design will be required to be in accordance with the information and drawings submitted as part of the notice of requirement and resource consent applications.

Given the importance of urban and landscape design elements to this Project, detailed design will involve the production of an Urban and Landscape Design Plan (ULDP). The ULDP will give effect to the Urban and Landscape Design Framework, Technical Report 3 in Volume 3 of these documents. It will contain detailed design drawings and information that addresses:

Form, articulation and finish of all bridge elements;

Detail of the following junctions: pier and embankment to ground junctions; pier to superstructure junctions; and, pedestrian bridge to vehicle bridge;




Detail of the lighting structures, light types, architectural lighting and luminance levels;

Details of all proposed road traffic signs;

Paving and the finish of all hard surfaces (excluding the road surface);

Street and park furniture;

Details of all soft landscaping elements;

Details of native plants sourcing;

The identification of vegetation to be retained or relocated; and,

A planting programme, including the staging of planting in relation to the construction programme.

It is also proposed that a Heritage Management Plan be prepared for the Basin Reserve. The Heritage Management Plan will be based on the principles relating to the Basin Reserve contained in the ULDF.

The Heritage Management Plan will outline the heritage values of the Basin Reserve and a strategy for the protection of these values during construction of the Project. This Plan will inform the design of Project works within the Basin Reserve, and in particular will inform the development of the Outline Plan for this part of the Project.

Both the ULDP and Heritage Management Plan will be submitted to Wellington City Council for certification.

34.4 Construction management plan framework

To manage the effects of the Project’s construction a suite of construction management plans is proposed. The framework for these plans is shown in Figure 34-2.

34.4.1 Construction Environmental Management Plan

A proposed Construction Environmental Management Plan (CEMP) has been prepared for the Project (Refer Volume 5 AEE). The final CEMP will be prepared by the Project constructor and will be provided to GWRC and WCC prior to construction for certification.

The Constructor will be required to undertake all construction activities on the site in accordance with the provisions of the CEMP and relevant management plans as part of their contractual arrangements.

The CEMP is an overarching construction management document. The other management plans fall under this overarching plan. The CEMP provides the general procedures under which the Project will be constructed. It sets out the methods and tools to be utilised by the Constructor to manage, avoid, remedy and mitigate potential adverse environmental effects in order to meet the proposed resource consent and designation conditions, relevant legislation and the NZTA’s environmental objectives.




The methods and tools detailed in the CEMP include construction management team structure and responsibilities, consultation and communication requirements, monitoring and review requirements, documentation and auditing procedures.

The CEMP establishes the relationship between the key environmental effects of construction and the topic specific management plans and /or topic specific protocols. These topic specific management plans include, for example, construction traffic and contaminated soil and are included as appendices to the CEMP.




GWRC WCC WCC HPT Road Controlling Authorities Resource consents Designation Resource consents HPA Authority Other (LGA etc)

Construction Environmental Management Plan

Contaminated Land Management Plan

Construction Noise and Vibration Management Plan

Construction Transport Management Plan

Site Specific Traffic Management Plans (SSTMPs) Road opening notice & SSTMPs

Construction Air Quality Management Plan

Accidental Discovery Protocol

Archaeological Mgmt Plan

Erosion & Sediment Control Measures

Figure 34-2 Proposed Management Plan Framework

Provided as a draft (Volume 4) Required by condition

To be provided in response to other, non‐RMA requirements




The proposed designation and resource consent conditions that require preparation of a CEMP, and the topic specific management plans, provide flexibility to review and modify practices according to changing circumstances, monitoring results and complaints. The ability to make changes to the management plans is an important aspect of continually improving their effectiveness.

However, any changes to management plans are required to remain consistent with the overall intent of the relevant management plan, and need to be certified in terms of the NoR conditions by the relevant WCC officer.

The Constructor will be required to refine and finalise the management plans as part of the process of undertaking and finalising detailed design and construction methods. The process for finalising the management plans will be set out in the designation and consent conditions.

34.4.2 Rationale for preparing draft management plans

The intention of providing draft management plans as part of the suite of documents supplied in support of the consent applications and notice of requirement is to:

Provide confidence to stakeholders that construction details have been considered;

Assist in assessing effects;

Assist in developing mitigation strategies;

Assist stakeholders in considering the construction related aspects of the Project; and

Provide a framework for certification of final management plans prior to construction.

The purpose of the detailed topic specific management plans is to:

Provide more detailed design information about how specific key effects on particularly sensitive values can be appropriately managed;

Prepare targeted measures which demonstrate how construction management techniques could be applied to specific issues;

Provide integrated consideration of the key performance standards relevant to controlling actual and potential effects on the environment.

The Archaeological Management Plan and SSTMPs have not been provided in draft as part of the application documentation. This is considered appropriate because:

The Archaeological Management Plan is in relation to the Historic Places Act processes and is not a directly relevant part of this documentation; and

The requirements for the Site Specific Traffic Management Plans are set out in the CTMP. In addition the exact construction sequence will not be finalised until the




Project Constructor has been selected. The SSTMPs cannot be prepared until this sequence is confirmed.

34.5 Summary of mitigation measures to manage adverse effects

Table 34-1 provides a summary of all environmental effects, positive and adverse, identified in Part G of the Assessment of Environmental Effects. This includes all environmental effects associated with the Project’s design, construction and operation.

Table 34-1 also identifies how the positive effects will be ensured, and what further mitigation is proposed in relation to the adverse environmental effects. Finally, Table 34-1 provides a description of the general nature of conditions that are considered necessary to ensure benefits arise or that mitigation occurs. The specific wording of the conditions proposed by NZTA is included in Chapter 32.




Table 34-1 Summary of Project environmental effects, mitigation and conditions

Actual and Potential Effect Mitigation Recommended Conditions Proposed

Traffic and Transport (TR4 & Construction Transport Management Plan (attached to the CEMP))

Comparing 2021 ‘with Project’ and ‘do minimum’ key journey time savings around the Basin include:

westbound SH1 journey times (between Goa St to Boulcott St on ramp) are reduced by nearly 7.5 minutes (54%) in the AM peak;

eastbound SH1 journey times (between Terrace off ramp - Goa St) are reduced by up to 1.3 minutes (16%) in the PM peak;

northbound journey times between Adelaide Rd to Cambridge Tce (Hospital Rd - Courtenay Pl) are reduced by just under two minutes (39%) in the AM peak; and,

southbound journey times between Kent Tce to Adelaide Rd (Courtenay Pl - Hospital Rd) are reduced by as much as a minute (23%) in the PM peak period.

Comparing 2021 ‘with Project’ and ‘do minimum’, key journey time reliability improvements as follows:

westbound journey time variability is reduced by approximately 2.5 minutes for the AM peak and by nearly 5 minutes in the PM peak.

eastbound journey time variability is reduced by approximately 1.5 minutes in the PM peak and there is a marginal reduction in the AM peak.

Positive effect, so no mitigation is required.

Condition requiring proposal to be constructed in accordance with drawings.





Key traffic volume reductions around the Basin are expected as follows (Annual Average Daily Traffic Flows):

16,200 vehicle (83%) reduction of traffic on Paterson / Dufferin Street corner;

12,500 vehicle (40%) reduction at Rugby Street east;

15,500 vehicle (73%) reduction on Rugby Street (at the Adelaide Road intersection); and

14,200 (43%) reduction on Sussex Street.



Queue lengths reduce from the without project scenario in 2021 as follows:

Vivian Street onto Kent Terrace: reduces by 65% (AM peak);

Paterson Street intersection with Dufferin Street: reduces by 76% (AM) and 91% (PM);

No queues on Rugby Street in either peak period; and

Buckle Street intersection with Taranaki Street (via Bridge) 21% reduction (AM) / 41% (PM).



The Project improves the resilience and efficiency of the State highway network between the Mount Victoria tunnel and the National War Memorial Park through the grade separation of west bound SH1 from the local road network.



The Project improves the resilience and efficiency of the local road network around the Basin Reserve between Adelaide Road and Kent and Cambridge

Positive effect, so no mitigation is Condition requiring proposal to be constructed in accordance with





Terraces as a result of State Highway traffic conflicts being removed. required. drawings.

Improvements in accessibility through the area (including emergency services serving Wellington Hospital and the southern and eastern suburbs).



Provision of 355 metres of new bus lanes, which will provide for future PT provision when the PT spine is developed further.

Improvement in bus journey times of up to 41% (when compared with the year 2021 without the project scenario).

Comparing 2021 ‘with Project’ and ‘do minimum’, key journey time variability improvements for passenger transport as follows:

AM peak, northbound, variability reduces from +/- 60 secs to +/- 38 secs;

PM peak, northbound, variability reduces from +/- 76 secs to +/-23 secs;

AM peak, southbound, variability reduces from +/- 58 secs to +/- 18 secs; and

PM peak, southbound, variability reduces from +/- 66 secs to +/- 19 secs.

The relocation of the southbound Adelaide Road stop to Rugby Street will also improve bus operation and passenger facilities at this very busy







location.

Provision of 210 metres of new pedestrian footpaths and 1ha of new / improved open space means that the environment is no longer dominated by cars and traffic and severance is very significantly improved. The number of lanes pedestrians have to cross is also reduced, with the pedestrian and cycle footbridge, the reduction in lanes through the Rugby/Adelaide intersection and also the Sussex/Buckle intersection.



Improvements to the following intersections to improve safety:

Vivian / Kent / Cambridge / Pirie Street;

Ellice / Hania Street;

Ellice / Dufferin Street;

Paterson / Dufferin Street;

Adelaide / Rugby Road; and

Buckle / Taranaki Street.



Other localised access and street improvements as part of the Project or associated mitigation include:

St Marks School drop off and bus stand area;

Government House and Wellington College access;

Improved access for school buses out of the Mt Victoria area; and

Improved access and reduced delay out of Mt Victoria at Pirie Street for residents and businesses.







Disruption to travel through the area (all modes) during construction:

Hania Street will be closed for periods;

Ellice Street will have reduced capacity for periods;

Disruption to journey for east bound SH traffic between Tory Street and Paterson Street (eastern portal of Mount Victoria tunnel); and

Disruption to journey for west bound SH traffic between the eastern portal of Mount Victoria tunnel and Sussex Street.

Construction Transport Management Plan (CTMP) and Site Specific Transport Management Plans (SSTMP) to be prepared to manage effects.

Conditions requiring development and implementation of the CTMP and SSTMPs.

Right turn from Ellice Street onto Hania Street is removed reducing accessibility.

Construction of the Vivian, Cambridge, Kent, Pirie improvements in advance of changes to Ellice/Hania Intersection.

Condition requiring the construction of the Vivian, Cambridge, Kent, Pirie improvements in advance of changes to Ellice/Hania Intersection.

Changes to parking arrangements and provision for St Joseph’s Church car park.

Redevelopment of church land to provide replacement parking facilities.


A decrease within the Project Area of 12 on street car parking spaces. Adverse effects are considered to be minor therefore no mitigation is required.






Ground Subsidence (TR1: Design Philosophy Statement)

Potential ground subsidence as a result of interference with groundwater.

Appropriate construction methodology to avoid ground subsidence effects due to construction works, as per the CEMP.

Monitoring of ground water levels as outlined in the CEMP.

Pre and post construction building surveys.

Conditions requiring development and implementation of the CEMP.


Condition requiring building condition surveys and remedial work as necessary.

Utilities (TR1:Design Philosophy Statement & AEE Chapter 27)

Potential for disruption or damage to occur to network utilities in the Project Area during construction.

Finalisation and implementation of the CEMP.


Potential for damage to occur to local road in the vicinity of the Project Area during construction.

Implementation of procedures to prevent slurry, clay and other materials from construction sites being deposited on the adjoining roads.

Pre and post construction condition survey of local roads. Remedial works undertaken as and if necessary.

Condition requiring implementation of procedures.

Conditions requring pre and post construction survey’s local road, and remedial works if faults uncovered during these surveys.





Groundwater (Technical Report 20)

Potential for the discharge of groundwater to ground to contaminate the stormwater network .

Controls on management of water collected, to ensure that standards for any discharges are met. Finalisation and implementation of the CEMP.

Conditions specifying standards for any water discharged to ground.


Potential for dewatering to affect groundwater. Limit on the amount of abstraction allowed.

Condition specifying abstraction limit.


Potential for piling works and ground stabilisation at abutments to contaminate groundwater.

Controls on construction methodologies used.

Finalisation and implementation of the CEMP.

Conditions specifying standards and processes for pile construction and ground stabilisation.


Ground Vibration (TR8 and Construction Noise and Vibration Management Plan (attached to the CEMP))

Minor improvements in vibration levels along the southern section of Dufferin Street, and on Rugby and Sussex Streets due to reduction in traffic


Condition requiring proposal to be constructed in accordance with





levels. drawings.

Potential for ground vibration to cause damage to buildings during construction, including from construction of the foundations for the proposed building within the Basin Reserve.

Construction Noise and Vibration Management Plan (CNVMP), includes monitoring.

Pre and post construction condition surveys

Conditions requiring development and implementation of the CNVMP.

Condition requiring building condition surveys and remedial work as necessary.

Potential for ground vibration to cause disturbance/annoyance to building occupants during construction.

Construction Noise and Vibration Management Plan (CNVMP)


Potential for damage to buried services due to ground vibration during construction.

CEMP and CNVMP specifically, consideration of methods and then monitoring of vibration sources to ensure that measured vibrations are less than 10 mm/s PPV. If levels are likely to be exceeded then the service will be relocated.

Construction method will be designed to avoid potential effects on the Waitangi Stream.

Conditions requiring the development and implementation of the CEMP and CNVMP.

Potential effects of ground vibration to proposed building under the bridge Traffic induced ground vibrations should be taken into account in the

Condition requiring that the building be designed to take





due to proximity of bridge piers. design of the building to ensure the impact of these vibrations on the comfort of people who use the building is minimal.

account of the existing and projected traffic vibration environment.

Potential for increase in traffic-induced ground vibration levels at nearby buildings once the Project is operational.

Carriageway to be a minimum of 5 m from buildings. Where this is not possible in relation to St Joseph’s Church, particular attention is to be paid to road surface roughness levels.


Stormwater (TR1: Design Philosophy Statement & AEE Chapter 28)

Construction sedimentation effect on the stormwater network and receiving environment.

CEMP, including erosion and sediment control measures.


Condition requiring the installation and maintenance of erosion and sediment control measures.

Impact of stormwater runoff from finished road surface on water quality. Treatment via rain gardens. Conditions requiring proposal to be constructed in accordance with drawings and the ULDF.





Impact of stormwater runoff on the capacity of the ‘downstream’ stormwater network.

Attenuation via rain gardens. Conditions requiring proposal to be constructed in accordance with drawings and the ULDF.

Contamination (TR7 & Contaminated Land Management Plan (attached to the CEMP))

Risk associated with previously unidentified contaminated sites. Procedure for addressing the discovery of previously unknown areas of contamination in the Contaminated Land Management Plan (CLMP).

Conditions requiring development and implementation of the CLMP.

Risk from as yet untested sites. Testing of untested potentially contaminated sites to be completed in accordance with the CLMP prior to the commencement of works.


Potential risk to construction workers. Implementation of procedures in the CLMP.


Noise (TR5 & Construction Noise & Vibration Management Plan (attached to the CEMP))

A minor improvement in noise conditions (reduction in noise levels) along Positive effect, so no mitigation is Condition requiring proposal to be





southern section of Dufferin, Rugby and Sussex Streets. required. constructed in accordance with drawings.

A minor increase in noise levels on parts of Paterson, Ellice and Buckle Streets, and for noise sensitive activities located in these areas. But impact of these increases is negligible.

Selection of noise surfaces as per design or acoustic equivalent surfaces.


Condition requiring the installation of the road surfaces as per the application documentation or accoustic equivalent used.

Potential for bridge joints to cause noise issues. Design of bridge joints to have minor adverse noise effects.

Condition requiring that the design of the joints to be installed as per the application documentation, or an accoustic equivalent used.

Construction noise effects. Monitoring and management mechanisms as set out in the Construction Noise and Vibration Management Plan.


Air (TR 8 & Construction Air Quality Management Plan (attached to CEMP))

A minor improvement in air quality (reduction in emissions) along southern Positive effect, so no mitigation is Condition requiring proposal to be





section of Dufferin, and on Rugby and Sussex Streets. required. constructed in accordance with drawings.

Slight reduction in air quality in parts of Ellice and Buckle Streets located to the north of the Basin Reserve.

No mitigation considered necessary as air quality remains compliant with relevant standards.

No condition required.

Temporary effects of dust, odour, emissions during construction. Mitigation and monitoring as per the Construction Air Quality Management Plan.

Conditions requiring development and implementation of the CAQMP.

Urban Design (TR 9)

Positive effects in relation to land use and urban structure by:

Assisting in development of the Adelaide Street spine in Wellington City Council’s Urban Development Strategy; and

Streetscape and open space proposals that link significant buildings and spaces in the Project Area.


Condition requiring proposal to be constructed in accordance with drawings and the Zone Specific priniciples in the Urban Landscape Design Framework.

Adverse effects on amenity in areas most directly impacted by the bridge, particularly in the vicinity of the Ellice Street, Hania Street and Dufferin Street intersection.

Mitigation is integrated into the design as per the Urban and Landscape Design Framework. The mitigation in the bridge, landscape and streetscape design within Zones and Elements is






cumulative. Conditions setting specific requirements for the detailed design and construction of the bridge, landscape and streetscape design of the Zones and Elements.

Positive effects in relation to the accessibility resulting from the provision of improved pedestrian and cycle access through the Project Area and the reduction in at-grade traffic flow.


Condition requiring proposal to be constructed in accordance with drawings and the Zone Specific priniciples in the Urban Landscape Design Framework

Townscape and Visual (TR11 and, TR3)

Townscape/visual effects in long-distance views will be low. Bridge will be seen as a small element in the context of the broader cityscape.

Alignment of bridge with current street network; minimised mass and height of Project structures; proposed continuation of the NWM Park.


Conditions setting specific requirements for the detailed design and construction of the bridge, landscape and streetscape design of the Zones and Elements.





The bridge and the northern gateway building will have adverse effects on the spatial context of the Basin Reserve and on mid-range and close-up views, including from within the Basin Reserve. The effects will be most pronounced in close-up views from the north and east.

Mitigation is integrated into the design as outlined in TR3: Urban and Landscape Design Framework report. The mitigation in the bridge, landscape and streetscape design within Zones and Elements is cumulative.


Conditions setting specific requirements for the detailed design and construction of the bridge, landscape and streetscape design of the Zones and Elements.

Potential effect of traffic on the bridge on the sightlines of batspersons from within the Basin Reserve.

Construction of the Northern Gateway Building.

Conditions requiring proposal to be constructed in accordance with drawings and to complete the Northern Gateway Building in accord with TR3: ULDF.

Lighting (AEE Chapter 23 & TR1)

Potential light spill and glare from construction lighting. Requirement to locate and direct lighting to mitigate such effects.

Condition requiring construction lighting to be located and directed to mitigate adverse effects.





Potential light spill and glare from proposed street lighting. Reduced pole height, use of LED lights and if required cowls to be attached to lanterns.


Condition requiring permenant lighting to be in accordance with AS/NZS1158.

Wind (TR1, Chapter 33)

Potential for pedestrian and cyclists to be impacted by strong side winds when using the bridge.

Signage to alert pedestrians and cyclists of the alternative route.

Condition requiring the signage.

Potential for motor vehicles to be impacted by strong side winds when using the bridge.

Use of the VMS to alert motor vehicle users to strong wind conditions.

No condition required as this is part of the standard operation of the VMS.

Potential for increased wind effects in the vicinity of the Northern Gateway Building, given the extent of ground floor openings.

Require gates to be installed with porosity levels of 30-35%, as per TR3.

Condition requiring the Northern Gateway Building to be constructed in accordance with the relevant drawings and the Zone Specific priniciples in the Urban Landscape Design Framework.





CPTED (TR11)

Potential for the proposed higher quality environment to contribute to reduce the crime rate, anti-social behaviour and fear of crime.



Potential for safety and sense of safety to reduce during construction in relation to movements around the construction site.

Require CPTED assessments of CTMP & SSTMP.

Condition requiring integration of CPTED review in the development of the CTMP and SSTMPs.

Built Heritage (TR12)

Potential dominance and enclosure effects to the ‘physical’ heritage values of the architectural and urban form of the Basin Reserve.

Mitigation is incorporated into the Project design including proposed continuation of the NMW Park, bridge design elements, the new entrance to the Basin Reserve (the entrance plaza and the Northern Gateway Building), the green screen, proposed streetscape landscape treatments, new building on Kent/Ellice corner


Conditions setting specific requirements for the design and construction of Bridge, Memorial Park, Northern Gateway Building, building on the Kent/Ellice corner, green screen, general urban design & landscape treatments and the Basin Reserve entrance & plaza





Effects to the built edge of the Basin Reserve grounds through changes to the spatial setting at the northern gateway, including construction of the Northern Gateway Building and relocation of the CS Dempster gate.

Mitigation is incorporated into the Project Design and includes the Basin Reserve plaza and entrance upgrades and, improvements to Dufferin Street relative to the entrance to Government House and provision of new expanded southern entrance to the Basin Reserve with the proposed relocation of the CS Dempster Gate.

Preparation of a Heritage Management Plan incorporating a management policy which takes account of both heritage values and the known features and effects of the proposed Bridge project.


Conditions setting specific requirements for the design and construction of the Northern Gateway Building and the Basin Reserve entrance plaza.

Condition requiring the preparation of a Heritage Management Plan.

Archaeology & Culture (TR14)

Reflection of cultural and historic landscapes in the Project design. Positive effects, so no mitigation is required.


Conditions setting specific requirements for the design and construction of the continuation of NWM Park and landscape





treatments under the bridge.

Potential to disturb, destroy, discover known and unknown archaeological resources.

Accidental Discovery Protocol.

Mitigation measures required under the HPT authority – RMA based conditions not also required.

Condition requiring the finalisation and implementation of the Accidental Discovery Protocol in the CEMP.

Social (TR14)

Reduction in traffic congestion saving time and improving safety for both regional and local travellers.

Improved health, safety and connectivity benefits for pedestrians and cyclists both for local and regional trips.

Provision of dedicated bus lanes improving access and reducing delays for bus commuters.

An overall improvement in safety for students being dropped at schools both in terms of crossing points, and safer stopping points for cars and buses.

Improved access to community facilities or at a minimum no change in standard of accessibility.

Consideration of the needs of the disabled through the provision of appropriate ramps and other measures in the areas around the bridge and

Positive effects, so no mitigation is required.






Basin Reserve.

A strong emphasis on well-designed spaces to improve urban amenity linking from the Basin Reserve to Memorial Park.

Retention of significant historic fabric and protection of the Basin Reserve context.

A reduction in traffic on parts of the network thus improving quality of the urban environment particularly for parts of the north and south transport spine.

Disruption to and impacts on local residents, educational and community facilities during construction.

CEMP, including communication strategy and Community Reference Group.

CTMP, CNVMP & CAQMP.

Conditions requiring development and implementation of the CEMP, CTMP, CNVMP and CAQMP.

Localised adverse access effects on some private property and businesses during construction.

CTMP & SSTMP.

Communication strategy as per the CEMP.

Conditions requiring development and implementation of the CEMP, CTMP & SSTMP.

Private Property Impacts (TR4, TR3 and Chapter 30 of the AEE)

Impact of property acquisition on the continued functioning of St Joseph’s Church.

Redesign of the Church car park. Design of entrance and boundary

Condition requiring proposal to be constructed in accordance with





treatments, including landscaping to protect amenity of Church grounds.

drawings.

Impact of construction within the Regional Wines and Spirits property. Remedial works to site frontage to adjust access/egress to the car park.

On-going communication with the business owner and land owner.


Condition requiring the communications register in the CEMP.

Localised adverse access effects on some private property and businesses during construction.

CTMP and SSTMP to ensure that access to site is maintained and car parking is available. Signs to be used as needed.

Communication protocols as per the CEMP.

Conditions requiring development and implementation of the CEMP, CTMP and SSTMP.

Economic effects (TR17)

During construction there will be some disruption to local businesses Communication with businesses and careful consideration of construction traffic management to avoid effects

Conditions requiring development and implementation of the CEMP, CTMP and SSTMP

Temporary construction jobs and spin-off benefits to service industry None None





during construction

Efficiency benefits to the City and region from improved transport system None None




34.6 Summary of proposed monitoring

Monitoring of environmental performance and compliance with resource consents and designations is required throughout the construction of the Project. This will ensure that the effectiveness of the mitigation measures is monitored, areas of noncompliance identified and corrective actions taken as necessary.

Environmental monitoring will be undertaken according to the following principles:

The Constructor’s nominated Environment and Compliance Manager will be responsible for managing the environmental monitoring, and arranging training and specialist consultants for the monitoring as required;

When monitoring results identify non-conformances with relevant standards and resource consent and designation conditions the incident response and corrective actions procedures in the CEMP will be followed;

The Constructor’s nominated Environment and Compliance Manager will advise the Constructor’s Project Manager and NZTA of any non-compliance found during monitoring and will report these to relevant authorities;

Environmental monitoring results will be inputted by the Environment and Compliance Manager into NZTA’s CS-VUE database for the Project. This will be overviewed on a regular basis by the Constructor’s Project Manager;

Environmental monitoring results will be reported to the relevant authorities by the Environment and Compliance Manager as required; and

Environmental monitoring results will be reported to the Community Reference Group and relevant parties on the Communications Register, both of which are required under the proposed designation and resource consent conditions.

Should inspections indicate that the environmental controls are not functioning as intended, the Environment and Compliance Manager and Constructor’s Project Manager will instigate a review of the relevant aspect of the Construction Environmental Management Plan.

The following table provides a summary of the monitoring proposed in the management plans. Procedures for responding to monitoring results which indicate non-conformance with standards or designation and resource consent conditions are outlined in the relevant management plan.




Table 34-2 Monitoring Summary

Issue Proposed Monitoring Reference

General construction monitoring

Scheduled general site monitoring will be undertaken daily (by the site manager), and weekly and monthly (by the Constructor’s Environmental and Compliance Manager).

Triggered inspections will also be undertaken in response to feedback, incidents and extreme weather as required.

Proposed Construction Environmental Management Plan

Groundwater / subsidence

Monitor settlement and groundwater levels in the area Proposed Construction Environmental Management Plan

Vibration The Constructor will be required to measure the vibration from the combination equipment operating during each stage of construction. The purpose is to assess the measured operating vibration levels against the estimates used in the Assessment of Environmental Effects. Monitoring should be at the start of each major construction activity and then periodically to confirm ongoing compliance.

Pre and post-construction conditions surveys are to be undertaken on specified buildings and infrastructure. The specified buildings and infrastructure are listed in the proposed designation conditions.

Proposed Construction Noise and Vibration Management Plan

Contamination Soil sampling is to be conducted at four nominated locations at least four weeks prior to construction commencing. Testing will consist of:

Proposed Contaminated Land





A suite of heavy metals parameters for all sites; and

Polycyclic aromatic hydrocarbons (PAH) and total petroleum hydrocarbons (TPH) for 1-7 Dufferin Street and the grass verges.

If soils are above the relevant guideline values for the protection of maintenance and construction workers specific Health and Safety Procedures will be implemented.

For soil management the results will be compared to regional background soil contaminant concentrations, cleanfill acceptance criteria and landfill acceptance criteria to determine the appropriate disposal location.

During construction, the Constructor will sample stockpiled material suspected of being heavily contaminated. The extent and nature of monitoring is to be agreed with the facility accepting the soil.

Management Plan

Noise The Constructor will be required to measure the noise from the combination equipment operating during each stage of construction. The purpose is to assess the measured operating noise level against the noise level calculated prior to commencement of the particular stage.

Noise monitoring during construction at relevant sensitive receptors (such as at Grandstand Apartments) shall occur at the start of each major construction activity and then periodically to confirm ongoing compliance.

Proposed Construction Noise and Vibration Management Plan

Air Quality A series of regular dust monitoring activities are required to be implemented daily, weekly and when high winds are forecast as part of the general construction monitoring above. The monitoring will be the responsibility of the site manager, under the direction of the Constructor’s Environmental and

Proposed Construction Air Quality Management





Compliance Manager. Plan

Archaeology On-going visual observation of construction sites is to be undertaken to detect the accidental discovery of archaeological sites.

Proposed Accidental Discovery Protocol

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