KUMUTOTO -SITE 9 WELLINGTON

KUMUTOTO -SITE 9 WELLINGTON REVISION 2 CONSTRUCTION MANAGEMENT PLAN

6 July 2018

KUMUTOTO SITE 9 – DRAFT CONSTRUCTION MANAGEMENT PLAN 2

Kumutoto Site 9: Draft Construction Management Plan | 6 July 2018

TABLE OF CONTENTS Section 0.0 ...............................................................................................................................................................

Table of contents ....................................................................................................................................... 2

Section 1.0 ............................................................................................................................................................. 3

Project Introduction and CMP Objectives ................................................................................................... 3

Section 2.0 ............................................................................................................................................................. 4

Scope of Work ........................................................................................................................................... 4

Section 3.0 ............................................................................................................................................................. 7

Site Establishment ..................................................................................................................................... 7

Section 4.0 ............................................................................................................................................................. 8

Proposed Site Plan ..................................................................................................................................... 8

Section 5.0 ............................................................................................................................................................. 9

Proposed Traffic Management Plan ............................................................................................................ 9

Section 6.0 ...........................................................................................................................................................10

Proposed Crane Location ......................................................................................................................... 10

Section 7.0 ...........................................................................................................................................................11

Proposed LTM Signage ........................................................................................................................... 11

Section 8.0 ...........................................................................................................................................................12

Roles and Responsibilities ........................................................................................................................ 12

Section 9.0 ...........................................................................................................................................................13

Preliminary Programme ........................................................................................................................... 13

Section 10.0 ........................................................................................................................................................ 14

LTM Complaints Procedure ..................................................................................................................... 14

Section 11.0 ........................................................................................................................................................ 15

Protection of Existing Structures .............................................................................................................. 15

Section 12.0 ........................................................................................................................................................ 16

Demolition Management Plan .................................................................................................................. 16

Section 13.0 ........................................................................................................................................................ 18

Waste Management Plan .......................................................................................................................... 18

Section 14.0 ........................................................................................................................................................ 19

Health and Safety Management Plan ........................................................................................................ 19

Section 15.0 ........................................................................................................................................................ 20

Excavation Management Plan .................................................................................................................. 20

Section 16.0 ....................................................................................................................................................... 38



SECTION 1.0

PROJECT INTRODUCTION AND CMP OBJECTIVES Project Introduction

This Construction Management Plan covers the proposed construction works to develop the Site 9 location between Customhouse Quay and Lady Elizabeth Lane.

Site 9 will be the location for a new purpose built premium commercial office building, which will comprise four upper levels of open plan office space and ground level retail units with cycle storage and shower facilities.

Access to the building is through a ground floor lobby, which can be accessed from either Customhouse Quay or Lady Elizabeth Lane. A bank of lifts connects to the upper levels through a central core.

At each level, sited adjacent to the central core are toilet facilities. Also located in this area are service ducts providing access to plant spaces located at both the roof and basement levels.

The building will be base isolated.

The building is designed to achieve a minimum 4 Greenstar rating or equivalent.

CMP Objectives

□ To outline a construction methodology for the Site 9 Project.

□ Identify any works during the course of the construction that have the potential to impact on the local environment.

□ To demonstrate management procedures to deal with the potential effects of construction activity on the local environment.

□ To establish how public interface will be managed.

□ To ensure the safety of public at all times during the works.

□ To outline potential issues and corrective procedures in consultation between neighbouring buildings, public and contractors



SECTION 2.0

SCOPE OF WORK Project Scope of Works

The main works associated with the project include:

Stage 1 – Site clearance and removal of asbestos and contaminated ground from the site/existing obstructions/services

Stage 2 – Main building foundations, comprising:

1. Enabling Works

2. Excavation

3. Piling (Bored or Continuous Flight Auger)

4. Inground building services

5. Slabs / Below Ground Level Walls/ concrete foundations

6. Structural steel

Stage 3 – Ground Floor:

1. Ground floor columns

2. Base Isolators

Stage 4 - Construction of the building structure, comprising:

1. Structural steel frame

2. Comflor flooring system

3. Precast concrete floors

4. Cores

5. Building Services

6. Lifts

7. Roofing

8. Façade

9. Finishes

10. Site Works

Stage 5 – Fitouts

1. Internal fit-out of the office space

Stage 6 – Completion, Defects, Commissioning and Handover



Project Phasing Summary

The first phase of the project will be to clear existing structures and obstructions within the ground. It is known that there is contaminated ground within the site footprint and also asbestos present. Ground Investigation will be carried out to reveal the extents. Once this is known then the method of excavation will be sheet piled to an offset from the footprint of the ground floor slab, and a benched dig carried out. Special consideration will be taken toward protecting the integrity of Customhouse Quay and Lady Elizabeth Lane. This material will be excavated and removed offsite and relevant controls will need be taken to ensure that this is disposed of in a correct and safe manner.

Phase 2 – A reduce dig will need to be carried out in order for a piling platform to be installed so CFA or Bored piles can be carried out to form the foundations of the building. Construction of the reinforced concrete slab as well as the base isolators for the building will be installed across the balance of the site. Elements of dewatering may be required throughout this process.

Phase 3 – Will involve the construction of the ground floor columns and base isolators to allow the building structure to be carried out. This will involve 450mm steel hollow columns being installed and filled with concrete. Slider bearings will be installed on top of the columns with an 1800mm x 1800mm plinth installed to first floor level. The base isolators will feature 1200mm steel hollow columns and be filled with concrete. Lead rubber bearings will be installed on top and a 1400mm x 1400mm plinth installed to first floor level.

Phase 4 involves the construction of the concrete and structural steel structure. This structure is made up of concrete/ steel columns, steel braces throughout, Comflor and pre-cast flooring systems. The façade, roofing, building services and all other works above ground level are also included in this phase.

Phase 5 incorporates the fit out and services installation to the building.

Phase 6 will be completion of works, rectifying any defects and then commission and handover.

It is anticipated that the construction period for this project will be around 16-18 months.

Loading

Construction traffic will enter via Whitmore Plaza and travel to site via a one-way system turning right into the construction site. All vehicles will then turn right out of the site and exit via Brandon St, this is as per advice from TDG Consultants. Two primary site entrances to the site are planned to be in use, one at the south end of the site by shed 13 and one at the north end close to the site offices. Gatemen will be deployed at these site entrances to ensure the flow of traffic is unaffected on Lady Elizabeth Lane and that pedestrians can continue safely. Formation of loading zones & protective gantries to footpaths, outside the site to Lady Elizabeth Lane, including suitable signage will assist with public safety. The pedestrian access will be closed at the Waring Taylor site and pedestrians diverted to use access at Johnston St.

Excavated material will leave the site from one of the two Lady Elizabeth Lane entrances being the shortest route to the WCC landfill, where possible.

Dust Control

Dust will be mitigated and managed through:

□ Scaffolding & Scrim

□ Sprinklers / misters / wheel washers

□ Dust fighters

All machinery / trucks and wheels will be hosed down prior to departing site to prevent any risk of dust transportation out of site.



Contaminated Ground Conditions

The site is known to contain contaminated ground as per the geotechnical report by Tonkin & Taylor (appendix 1). Due to the presence of soil contamination, procedures will be required during the excavation and transportation of soil from the site to protect site workers, the public and the environment. These procedures will be set out in a separate Contamination Site Management Plan.

Groundwater is expected to be suitable for either discharge to storm water or to trade waste, both of which will require permits which Tonkin and Taylor will arrange as required. This will be subject to further testing of groundwater as per the Tonkin and Taylor Report (appendix 2).



SECTION 3.0

SITE ESTABLISHMENT Traffic Management

LT McGuinness will engage traffic design engineers for design of the temporary loading zones and access points to the site from Lady Elizabeth Lane. As per above, Lady Elizabeth Lane Construction Traffic will enter via Whitmore Plaza and operate on a one-way basis and exit via Brandon St. Please see adjacent plan.

Hoardings & Site Security

A mix of 1.8m high wire mesh and 2.4m high timber/ plywood fencing will be used to separate the public areas and the construction zone along the public boundaries. Pedestrian protection gantries will be erected along Lady Elizabeth Lane for the length of the site, except at the entry gateways where a gateman will patrol this area.

Signage will be installed on the four corners of the site to educate the public of the environment. A security company will be engaged to undertake frequent patrols of the entire site, with the frequency of visits adjusted as required and all visits logged and recorded. Additionally, a CCTV camera system will be installed at such time as the site has communication capabilities.

Plant, Machinery & Deliveries

Due to the nature of this new build, a substantial amount of plant and equipment will be required to facilitate the construction stage. Piling rigs, excavators and large trucks will be required initially. All vehicles entering and existing the site where there is a possible dust risk will be required to have their loads covered. We anticipate waiting times for trucks and deliveries to be minimised as much as possible through programmed management, however, these can be located in the loading zone or within the site if required or be sent off site to return at a more suitable time. Please refer to the site plan with advice incorporated received from TDG traffic management.

Cranage

LT McGuinness proposes to erect one flat top tower crane. The crane is to be sited on one of two locations, either the east elevation or the south elevation. Both locations will allow full reach over the footprint of the building and the loading bays. The crane will be used for erection of the structural frame, pre-cast and comflor floor structure and façade installation. All necessary approvals and air space compliance from affected building and land owners will be arranged by the site owner.

The loading zones on both sides of the site have been positioned to be within the cranes’ reach and lifting capabilities, due to the size of the building and weights of the structural components. This arrangement also offers benefits in terms of easy access by delivery vehicles off of Lady Elizabeth Lane.

8 KUMUTOTO SITE 9 – DRAFT CONSTRUCTION MANAGEMENT PLAN

SECTION 4.0

PROPOSED SITE PLAN


SECTION 5.0

PROPOSED TMP TMP

LT McGuinness has taken advice from TDG Consultants in relation to the traffic route around site 9. It is advised to operate traffic on a one-way system, with traffic entering via Whitmore Plaza and exiting at Brandon St. Pedestrian access to the Waring Taylor crossing will be closed, so foot traffic will need to use alternative access at Johnston St. Signage will be erected to inform all users of this. Gatemen will control access at site entry points.

Lady Elizabeth Lane speed limit is currently 10 kmh, it is not envisaged that the speed limit will need to be lowered during the works. Additional speed limit signs will be erected along with trucks crossing signage.

KUMUTOTO SITE 9 – DRAFT CONSTRUCTION MANAGEMENT PLAN SECTION 6.0

PROPOSED CRANE LOCATION

Liebherr Crane Specification Chart

Public Exclusion Zones

Crane: 4m high hoarding with 1m splay and barbed wire on top. Access door to base of crane to be locked and only access by crane driver and for maintenance and inspection.

10



SECTION 7.0

PROPOSED LTM SIGNAGE



SECTION 8.0

ROLES AND RESPONSIBILITIES

Site Manager

Chris Guile

Mob: 027 4461 639

Email: [email protected]

Construction Manager

Kerrin Manuel

Mob: 0274 711 036


Project Manager

Jeff McHardy

Mob: 022 0727 411


Health and Safety Manager

Chris Diston

Mob: 021 596 689


Head Office

9 Francis Place

H: (04) 384 8455

F: (04) 801 8455

mailto:[email protected]




KUMUTOTO SITE 9 – DRAFT CONSTRUCTION MANAGEMENT PLAN

SECTION 9.0

PRELIMINARY PROGRAMME

13

14 KUMUTOTO SITE 9 – DRAFT CONSTRUCTION MANAGEMENT PLAN SECTION 10.0

LTM COMPLAINTS PROCEDURE The following communication and complaints procedure will be implemented on the Kumutoto Site 9 Project;

1. All complaints will be directed in the first instance to the site or Project Managers.

2. They will have the responsibility to ensure that the complaints procedure process is enacted and communicated correctly.

3. The Kumutoto Site 9 Project will prominently display alongside the works 4 signboards with the 24-hour contact number of LT McGuinness site management.

4. LT McGuinness will maintain on site a complaint register and log of actions taken. The register will include the following;

□ A standard complaints procedure pro forma

□ Date of complaint log

□ Complaint names log

□ Actions taken log

□ Report back on log

□ Close out log to be completed within 48 hours of the complain



SECTION 11.0

PROTECTION OF EXISTING STRUCTURES Collateral Damage Measures

Existing building damage survey to be completed prior to work starting on site. Key risks are to be assessed and managed by the construction team. Methodologies to minimise or eliminate the risk of damage to nearby structures and vehicles are to be incorporated in the Site-Specific Safety Plan during construction. Monitoring measures may include the following:

□ Survey pins and markers strategically placed once permission is granted by building owners

□ Photographic survey

□ Engineering and consultant professional advice TBC

□ Increased signage

□ Removal and protection of identified at risk items if possible

□ Protection of structures by means of ply coverings and signage

□ Actions agreed at the monthly liaison meetings with affected neighbours and business

Lady Elizabeth Lane

Photos of the original road condition are to be taken prior to works commencing. Protection to the existing kerb line and existing service markers/chambers etc are to be considered and protected as best possible as a significant increase of traffic will occur in this location.

Should any issues arise, they can be dealt with through the construction liaison group.

Wharf Structure

Loading on the wharf is not to exceed 5 tonne per axle as outlined through consultation with TDG Traffic Consultants. Monitored settlement of which none is expected, are by datum survey pins installed throughout the development.

Whitmore Gates/Waring Taylor St Pillars – Protect if required

Gates / Pillars adjacent to Shed 13 are to be protected with 2.4m high ply hoarding or removed, stored and reinstated at the completion of the development.

The gates and pillars at Whitmore St entrance, may need to be protected against damaged from heavier vehicles.



SECTION 12.0

DEMOLITION MANAGEMENT PLAN

DEMOLITION SCOPE OF WORKS

The main works associated with this project include:

Demolition of the existing carpark at Lady Elizabeth Lane and any existing remaining foundations/obstructions across the site.

□ Asbestos survey

□ Removal of asbestos based products prior to demolition commencement.

□ Temporary hoardings and screens as required

□ Removal of kerbing and asphalt as installed on site

ASBESTOS

An invasive asbestos survey will be undertaken to identify all possible areas of asbestos or other hazardous materials prior to commencement of the demolition works.

The ground soil throughout the site may contain asbestos. These will require removal prior to the commencement of any demolition if tests confirm asbestos is present.

Removal of all asbestos will comply with the NZ guidelines.

All asbestos material will be disposed off-site by an approved permit at the Wellington City Council Landfill.

LOADING

Trucks and machinery coming in/ out of the premises will be assisted by gateman and staff to ensure the safety of the public and staff. Vehicles will follow a one-way system entering via Whitmore Plaza and exiting at the Brandon St exit.

Loads leaving the site with demolition materials will need to be covered.

Signage, hoardings and site fences will also facilitate public control and risk mitigation to the public.

Compliance with the Traffic Management Plan will be required.

It is anticipated that a maximum of 3 heavy truck and trailer movements will be required per hour during the times listed below for the proposed two-week demolition period.



HOURS OF GENERAL WORK HOURS OF NOISY WORKS

MONDAY 7am - 7pm 7am – 6pm TUESDAY 7am – 7pm 7am – 6pm WEDNESDAY 7am - 7pm 7am – 6pm

THURSDAY 7am - 7pm 7am – 6pm FRIDAY 7am - 7pm 7am – 6pm

SATURDAY 7am - 12pm 7am – 6pm SUNDAY By Agreement with WCC By Agreement with WCC

PUBLIC HOLIDAYS No work No work

DUST CONTROL

Dust will be mitigated and managed through:

□ Scaffolding and scrim in places

□ Sprinklers/ misters

□ Dust fighters

□ Where required all machinery / trucks will be hosed down prior to departing site to prevent any risk of dust transportation out of site

□ Trucks entering and leaving the site will need to have load covers where a risk of dust and the like is present.

DEMOLITION NOISE

There will be increased noise associated with the demolition activities carried out within this project, some examples of noises that can be expected are:

□ Demolition (Concrete breaking)

□ Compressor running

□ Saw cutting

□ Core Drilling of concrete

□ Power tools operating

LT McGuinness will take a proactive approach to noise management through the following measures:

□ Establish and agree a tolerance control regime;

□ Advising tenants/neighbours 48 hours in advance of potential noise issues;

□ Inform the Council Noise Control officers of any works that is likely to be noisy or have an impact on the neighbours;

□ Schedule out of hours works appropriately in order to minimize any impact with business; and residential neighbours

□ In some instances, and where practicable to mitigate against noise LT McGuinness may install machinery baffling or wall baffles.

Demolition activities will wherever possible adopt the best practical option at all times to ensure the emission of noise from the site does not exceed a reasonable level in accordance with Section 16 of the Resource Management Act 1991.



SECTION 13.0

WASTE MANAGEMENT PLAN



SECTION 14.0

HEALTH AND SAFETY PLAN Health and Safety Management Plan

LT McGuinness will ensure that its Health and Safety policy is implemented throughout the project duration. This policy has been prepared by LT McGuinness.

The demolition zones will be hoarded off to keep the construction and public zones separate. Appropriate signs will be installed on both public and construction sides of the hoardings.

LT McGuinness is committed to the protection of its employees, sub-contractors, clients and the general public from accidental injury or damage from work carried out by and on behalf of the company and adopts health and safety and welfare as a fundamental business objective.

LT McGuinness is ‘Tertiary’ rated (one of the highest ratings awarded in the construction industry) by ACC New Zealand, and is a full member of Site Safe NZ, in which all personnel working on site must carry a Site Safe NZ Passport.

Chris Diston is LT McGuinness’s Health and Safety Manager, with Marta Fonseca as Co-coordinator and an onsite Health and Safety Manager.

Our management team will develop a comprehensive Health and Safety Management Plan before commencing work on site. This would capture all hazards and potential dangers through all the stages of the project.

The Health and Safety Management Plan will cover but not be limited to the following:

Height Safety Permit

Confined Space Permit Hot works Permit

Sprinkler Fit out Permit Task analysis (EXAMPLE)

Tool Box Talk Accident/Incident Report and register

Induction Forms and Register Health and Safety, Environmental

J20 Task Analysis Site Safety Meeting Template

Weekly Self Inspection Improvement Form

Method Statement Template



SECTION 15.0

EXCAVATION MANAGEMENT PLAN ENVIRONMENTAL VISION/POLICY STATEMENT

Vision

LT McGuinness Environmental Vision is to be regarded as an environmentally responsible construction company. LT McGuinness is committed to creating a sustainable future by utilising both people and resources in the care of the environment during the construction process in an effort to maintain the quality of the environment for future generations.

Policy

LT McGuinness is committed to undertaking its activities in an environmentally responsible manner and effectively managing any risk that may impact the environment. LT McGuinness will manage its work activities in a manner that is consistent with the principles of ecologically sustainable development and will deliver continuous improvement in environmental performance.

LT McGuinness will take all steps necessary to ensure that its activities do not compromise this commitment.

All LT McGuinness staff and Subcontractors have a responsibility to actively contribute towards Elimination, Isolation, or Minimisation of environmental impacts in their day to day activities. Employees and subcontractors must monitor the continued effective installation and operation of environmental controls within the scope of their day to day work as well as subcontractors.

LT McGuinness undertakes to consult its employees, contractors and the client on safety and environmental matters especially where any workplace change of practice may impact the environment or their obligations.

EXCAVATION MANAGEMENT PLAN

Introduction

LT McGuinness Excavation Management Plan provides information and guidance on how LT McGuinness will meet all requirements of the contract and local authorities.

By implementing this management plan, LT McGuinness aims to ensure that appropriate protection measures are implemented on works undertaken within the work site.



PRE-CONSTRUCTION REVIEW

Project KUMUTOTO SITE 9 Date

Completion Date TBC Address Between Customhouse Quay and Lady Elizabeth Lane Project Director TBC Construction Manager Kerrin Manuel Site Manager TBC Safety Supervisor Chris Diston Project Quality Controller TBC Engineer Dunning Thornton Consultants Client Representative Willis Bond Toilets Temporary toilets to be in place before works begin Safety Fences Temporary safety fences to be in place before works begin Water Temporary water supply to be in place before works begin Electricity Supplied by client if needed Security N/A Maximum excavation depth from existing ground level

≈2.5m TBC (excl. piles)

Traffic Control TBC Tipping Locations TBC Major Suppliers TBC

EXCAVATION DESCRIPTION

Located between Customhouse Quay and Lady Elizabeth Lane to the North of existing Shed 13.

Access to the site will be from two site entry points, one located at the Northern end of the site and the other at the Southern end, please refer to the Construction Site Plan.

The project involves sheet piles installed to an offset of 2m outside of the ground floor slab. Excavation works can then be carried with a benched dig across the ground floor footprint to a depth between approximately 1.7m to 2.8m below the existing ground levels to the underside of slab hardfill layer. The excavation will be carried out to underside of the below ground level slab, the deepest excavation will take place close to the cores of the building. Construction of the base slab will begin from here.

WORKING HOURS

Day Hours of General Works Hours of Night Works Hours of Noisy Works Monday 7am – 7pm 6pm – 11pm 7am – 6pm Tuesday 7am – 7pm 6pm – 11pm 7am – 6pm Wednesday 7am – 7pm 6pm – 11pm 7am – 6pm Thursday 7am – 7pm 6pm – 11pm 7am – 6pm Friday 7am – 7pm 6pm – 11pm 7am – 6pm Saturday 7am –4pm By agreement with WCC 7am – 4pm Sunday By agreement with WCC By agreement with WCC By agreement with WCC Public Holidays No work No work No work



PLANNING

Earthworks approvals, licenses and permits

LT McGuinness will ensure that any approvals, licences and permits as required by the Resource Consent, Greater Wellington Regional Council, WCC Consents or bylaws, acts and Regulations and any other legislative requirements are obtained before works commence.

Environmental protection requirements

LT McGuinness undertakes its own project-level risk assessment. A site risk assessment is carried out by the working team before works commence; findings from the risk assessment are then incorporated into the Construction Management Plan and site staff and subcontractors are inducted pre-commencement of works as reasonably practicable.

Site earthworks rules and protocol

All employees and subcontractors working on site will be inducted on the site rules. Furthermore, the rules will be displayed on notice boards or at other suitable locations on the work site.

COMMUNICATION AND COMPLAINTS PROCEDURE

Communication

The site manager is the contact point to deal with all earthworks issues and emergencies on site. He or she is responsible for ensuring all such issues are resolved. Staff members must notify the site manager firstly of any earthworks issues on site.

The Construction Manager and Site Manager have been nominated to be available to relevant external authorities on a 24-hour basis. They have the authority to take any action on site as directed by an authorised officer of any relevant external authority. (See Attachment A for the contact numbers).

All relevant authorities, affected property owners and others in the vicinity or affected by specific works will be informed of the project, activity and timeframes if required.

Emerging earthworks issues on site are discussed and consulted through regular Toolbox meetings. These records are retained as project records and reviewed on a regular basis by the site manager who will address any concerns and incorporate if necessary into the weekly check list.

Complaints Management

Any complaints which concern any aspect of the project are recorded and investigated on LT McGuinness’s Complaint form as part of our complaints procedure. A Complaints Report register will be maintained. The Complaints Report shows the details and nature of the complaint, the complainant, the date and actions taken as a result of the investigation.

If an earthworks complaint (such as a complaint regarding noise or pollution) is received, LT McGuinness will write a report to be presented to the clients’ representative within 3 days of a working day. This report includes details of the complaint, action taken to correct the problem and proposed measures to prevent the occurrence of a similar incident. If an incident is of a serious nature notice must be given to the relevant Council(s) and the Client’s representative within 24hrs or immediately depending.



EMERGENCY PREPAREDNESS AND RESPONSE

All earthworks incidents are dealt with promptly to minimise any potential impacts. Unexpected or accidental earthworks incidents will be managed in accordance with the sites’ incident response and reporting procedures. All earthworks incidents/complaints are reported using Complaints form (refer section 10).

Likely emergencies and incidents may involve:

□ Fuel or chemical spills;

□ Evidence of spoil being tracked off site;

□ Unlicensed discharge of pollutants to environment (air, water, noise, soil).

The Site Manager on site is responsible for undertaking the incident response according to this procedure.

Any incidents on site, which are likely to cause material harm to the environment, will be immediately reported to the Client’s Representative.

The Wellington Regional Council (Clients representative to be copied in) will be notified of pollution incidents on or around the site which have occurred in the course of the works.

Emergency contact numbers are displayed at the site entry and in this management plan.

Procedure in case of any incident

□ First check that you are not in danger yourself.

□ Notify your works Supervisor or most senior management person on site immediately

□ The works Supervisor or most senior management person handles the emergency according to procedures below:

Procedure in case of fire

□ Warn & rescue any person in immediate danger - only if safe to do so!

□ Call the fire brigade 111

□ Extinguish the fire using the right fire extinguisher if safe to do so

□ Evacuate to the emergency assembly area if directed or in danger.

□ Remain at assembly area & ensure everybody is accounted for.

Procedure in case of chemical spills

Spills on the worksite are most likely to be hydraulic oil or engine oil/fuel spilled from plant items. If a spillage occurs the following procedure is to be followed:

□ Immediately identify the spilled material and notify the works supervisor. Subcontractors are to notify LT McGuinness site personnel

□ Contain the spill as soon as possible so it doesn’t spread. Refer to MSDS for personal protective clothing needed

□ If containment is required, contain using earth mound and/or absorbent socks/spill kit. If you can’t do this let your supervisor know.



□ Use the relevant clean up procedure as instructed by the MSDS

□ Once the spill has been contained, your supervisor will arrange removal and disposal as soon as possible. Dispose of material using a licensed contractor and keep records of disposal on site.

□ Complete an Incident Report Form and forward it to the Project Manager for reporting to Client representative

and Wellington Regional Council if necessary.

MANAGING SUBCONTRACTORS ON SITE

The Site Manager applies a level and type of control to subcontractors appropriate to the risks associated with the subcontracted works.

LT McGuinness provides site induction to subcontractors on site by:

□ Informing the subcontractors of their responsibilities.

□ identifying those LT McGuinness’ staff (Project Manager, Site Managers and environmental officer) who have authority to direct subcontractors to stop work if their activities breach safety or earthworks and consent requirements.

LT McGuinness provides instruction on any systems or documentation that the subcontractor is expected to work under or use.

LT McGuinness monitors all subcontractors’ work for compliance with earthworks and consent requirements. This is done through regular inspections.

METHODOLOGY

Please refer to the attached bulk excavation plan and Dunning Thornton In- Ground Construction Method Statement contained in appendix 3.

Stage 1

It is envisaged the excavation works will be performed in two stages with stage one being the bulk excavation works to bench the site approximately 1.7m to 2.8m beneath the existing ground levels. The excavation will start at the Northern end of the site and work progressively South. This will be managed under LT McGuinness health and safety protocols for asbestos contaminated soil and be sent to the Wellington City Council asbestos contamination land fill.

The earth works may be lower than the water table in some areas during stage 1 and will generally be managed by, raising the excavation level to a point where the water table is not affecting the bulk earthworks, or using site pumps to pump water out to settle tanks. We will liaise with Tonkin and Taylor Geotechnical engineers frequently to take advice on whether any monitoring needs to occur in relation to ground strength resulting from the dewatering and will update the CMP accordingly. If monitoring is required we will implement the approach set out for the excavation works and following that any additional works or mitigation measures as necessary.

Stage 2

Piling works will progressively start in areas following on from the reduced level dig out to part one will start one a substantial area is clear and will then be followed by the ground beams. Perimeter walls, foundation beams, in-ground services work and finally the on-grade slab preparation excavation trade works, which will enable the upper structure works to get underway.



EMERGENCY AND SERVICES CONTACT DETAILS FOR EXCAVATION WORKS

Emergency Services: Contact name Contact number

Ambulance / Fire Brigade / Police 111

Poisons information Poison Centre Emergency 03 474 3000

Non-urgent Hot Line 03 479 1200

WorkSafe NZ 0800 209020

Hospital Wellington 04 385 5999

Closest Medical Facility Accident and Emergency

Medical Centre

17 Adelaide Rd

Newtown

04 384 4944

Site First Aiders: TBC

Utilities:

Water Capacity 04 910 3800

Electricity Contact Energy 0800 20 9000

Gas Power Co 0800 27 27 27

Telephone Telecom 123

Dial Before You Dig: Before you Dig 0800 248 344

EPA:

Wellington Regional Council 24hr Pollution hotline

0800 496 734

Spills / Sucker Truck Dawsons Waste 027 286 6286



LT McGuinness Ltd

Earthworks Protection Measures Project: Issue No. Issue date

Earthworks Protection Measures Sign Off

Note: ‘Sign Off’ for simple, once-only actions the sign off column may be initialed and dated; Sign off on reoccurring actions will be evidenced in the Earthworks inspection checklist.

Applies to all of the following Areas of Construction Activity:

1. During Work Phase all areas below will be monitored as work is been conducted 2. Complaints, Non-Conformances, Corrective actions will be recorded as events occur 3. Site Manager has the right to stop any construction activity which fails to meet any subcontractor’s

method statements earthworks considerations and consent conditions which are not being adhered to.

a) Demolition

Demolition works necessary to allow for Piling, Lift Shafts, Foundation Beams and the like.

Pre-works phase

All construction barricades, acoustic barriers positioned according to works been undertaken.

Works Method Statements, Environmental protection plan received from demolition contractors and reviewed by LT McGuinness. (refer Environmental Method Statements folder).

Asbestos pre-work assessment conducted and Method statement received.

Works Phase

Earthworks protection measures to be checked by LTM/Contractor pre-works starting.

b) Construction Noise



Areas identified to cause significant noise during construction are Pile driving and concrete works. These construction activities will be monitored under Table 2 of NZS 6803: 1999 and under the conditions of the Resource Consent.

General Construction activities during normal working hours will comply with Table 2. (Refer Construction Management Plan).

Pre-works phase - enabling

Investigations for services relocations and abandonment.

Notify all affected neighbours and businesses 2 days prior to potential night time concrete works.

Method statements to be received by Piling contractor on how earthworks noise, vibration will be mitigated.

Noise reducing fencing, baffles, acoustic measures to be in place pre-works.

Works Phase

Construction noise to be confined to hours as per the Construction Management Plan and the Resource Consent.

Noise mitigation methods installed pre-works and maintained.

c) Dust

Wind break mesh/hoardings will be erected along the length of the construction boundary. The screens will reduce the effects of dust produced with the demolition work. Due to the proximity of the surrounding buildings the site will require damping down of the construction dust and will be carried out with hand held hoses, sprinklers and misters.

Activities which generate dust will be monitored closely along with weather conditions so any foreseeable issues will be minimized. Housekeeping will be maintained vigilantly with routine sweep ups to minimize dust clouds during construction phase and constant dampening as required.

Hydrocarbons (such as hydraulic oils) shall not be used as a method of controlling dust.

The use of stockpiles and handling of excavated materials will be limited and covered.

Pre-works phase

Method Statements from Subcontractors conducting dry concrete cutting, demolition removal, soil excavation to show how airborne dust will be mitigated to reduce environmental contamination this is to be reviewed by LTM.

Erect all dust screens as required.

Works Phase



Maintain dust protection measures.

d) Vibration

The effects of vibration from piling and demolition works will be monitored in existing structures during the upgrade of the building. The demolition and piling vibration is not likely to be discernible in adjacent areas and buildings. This will be monitored.

Pre-works phase

Method statements from demolition, earthworks and piling subcontractors to show mitigation methods to reduce vibration. LTM to review plans.

Works Phase

Checks to be made to surrounding buildings/areas.

e) Wind

The exposed nature of the site will require constant monitoring as the wind poses significant issues which need to be addressed:

1. Dust from demolition/excavation. 2. General construction debris. 3. Scaffolding and wind mesh.

Pre-works phase

Method statements from demolition and earthworks contractors to show systems in place to deal with strong gusts, material removal, protection systems to safe guard environment.

Spill kits and site fencing in place.

Works Phase

Ensure all above are operating correctly.

f) Piling

The piling required for the new structures will be bored and driven piles. The scope of work is as follows:

1. Removal of obstructions 2. Bored and driven piles 3. Crane piles

Pre-works phase

Method Statement from Piling/demolition contractor to cover

1. Acoustic considerations 2. Effects of vibration on the environment 3. Disposal of excavated material



4. Prevention of spillage into the storm water systems, fuel, grout and slurry 5. Concrete placement

All construction barricades, acoustic barriers positioned according to works being undertaken.

Works Phase

Piling is restricted to the following days and hours: Monday to Friday 7am - 7pm, Saturday 7am - 4pm.

g) Construction Traffic

Construction traffic will use both the entry to Lady Elizabeth Lane at the Whitmore Plaza entrance and exit via Brandon Street. Bulk of the deliveries will be between 7:30am and 6pm Monday to Friday and Saturday 7:30am to 4pm.

A construction traffic management plan will be prepared for the project for each phase in accordance with the Wellington City Council Code of Practice for Temporary Traffic Management Control as required. Included will be details of construction traffic management, including procedures and practices for manning the gatehouse and supervising the arrival and departure of vehicles; details of on-site parking arrangements; detail of any provisions required to facilitate pedestrian and vehicle movement in the vicinity of any temporary accommodation for existing buildings; and contact details for any enquiries.

Pre-works phase

Where possible, all works shall be programmed and undertaken in a manner least disruptive to local businesses and access ways shall not be blocked at any time.

The works site shall be appropriately fenced to prevent unauthorised access.

Obtain any necessary permits.

Works Phase

Care should be taken to ensure access is not affected. If work is near roads warning signs should be erected.

Warning signs need to be erected to alert road users of the change in conditions. Any council conditions will be followed.

Warning signs need to be erected to alert road users of the change in conditions. For major road closures signs should be erected a few days before the works commence. Any council or Roads Authority conditions will be followed.



General Site Management

1. All vehicles to remain on clean all weather surface within the site

2. Install appropriate silt fences and other sediment control structures

3. Ensure sediment control measures are in place before starting clearing and excavation activities

4. Install a fence at the site boundary to limit site access from footpath

5. Fence off no-go areas to minimise disturbance

6. Stockpile materials only in designated areas behind sediment fences and cover

7. Order only the required quantities of materials

8. Minimise chemicals stored on site – store in dangerous goods shed

9. Make staff aware of emergency phone numbers (such as the Fire Brigade) to use in the case of a large spill

10. Keep Material Safety Data Sheets (MSDS’s) on site at all times

11. If a spill occurs, stop the source, contain it, clean up in accordance with MSDS’s and notify relevant authorities

12. Damp down dusty areas as required

13. Identify site access with minimal impacts on residents and instruct trucks to use this access

14. Avoid parking site vehicles where they will unduly impact local use of the street

15. Do not place waste containers, skip bins or building materials on road or footpath - store all materials within the work site

16. Limit hours of operations to suit council requirements listed in consent conditions

17. Take appropriate care when using construction equipment adjacent to any buildings

18. Identify and protect heritage items present on site if required

19. All trucks entering at exiting site are to be assisted by designated gatemen and spotters for public safety, and to ensure wheels are cleaned by the provided wheel wash areas prior to leaving site.

Site Earthworks Rules

Project/Location: Kumutoto Site 9



Demolition/Excavation

20. Stockpile materials only in designated areas behind sediment fences

21. Cover stockpiled materials with weighted plastic/ bidum cloth to prevent erosion by wind and rain

22. Install a fence around the site with a cloth barrier to act as a wind break if dust is a problem

23. Damp down surfaces such as stockpiles as required to reduce windblown dust

24. Implement the site Demolition Waste Management Plan

25. Do not mix hazardous materials with other demolition materials

26. Fuel refilling is to be in designated areas located a minimum distance of 5m away from bunded storm water systems.

Concreting

27. Wash out trucks at supplier's depot when possible

28. Wash out in an area where water cannot enter storm water drains, footpaths or roads up slope from a sediment control device –wheel wash areas refer CMP

Building services

29. Fill in service trenches as soon as work is completed to minimise erosion

PERIMETER BUNDING

To prevent any surface water run-off a” channel” will be dug lower than the adjacent foot path around the perimeter of the site as the first operation. Sheetpiles will be installed approx. 300mm lower than the existing footpath, so the excavation will capture any water run-off.

At the two site entry points wheel washers and bunding will be installed to mitigate any water or silt runoff from the site.

All adjacent and perimeter roadway sumps to Lady Elizabeth Lane will be sand bagged and/ or geotextile cloth installed and maintained regularly to prevent contaminates entering the storm water system.

Fuel refilling is to be in designated areas located a minimum distance of 5m away from bunded storm water systems.

Note: A spill should be reported to the Pollution Hotline (phone 0800 496 734) if:

The actual or potential harm to the health or safety of human beings or ecosystem is not trivial.



WHEEL WASH STATION

A cattle grid wheel wash station will be erected at the site exit points. This wheel wash may need to be progressively relocated as the excavation works progress to ensure that all vehicles are diligently washed down with high pressure hoses/ water blasters to prevent any soil being tracked off site.

DEWATERING (if required)

If excavation works are to be carried out below the water table, then pumps will be used to control this locally on site. Water will be pumped to settling tanks where the water will be distilled before pumping it off site. This will only be after GWRC consents are achieved.

During the below ground level construction, rainwater may need to be pumped from the internal layout. This will be done by using smaller pumps to again pump into the settling tanks.

Sediment from the settlement tank will be regularly pumped/ cleaned out with the waste being discharged at an appropriate disposal facility.



Asbestos Contaminated Soil

Further testing is required to establish whether asbestos is present in the surface soils of Site 9 as per the Tonkin Taylor Report.

It is expected that asbestos is present within the soil on the footprint of the site. A contamination survey of the site will be undertaken.

Under the 2016 Work Safe Approved code of Practice for the Management and Removal of Asbestos the excavation works to the asbestos contaminated area can be undertaken as “Related Asbestos Work”. ASBESTOS RELATED WORKS CONTROL PLAN – TRACE ASBESTOS IN SOIL This is a template of an asbestos related work plan for traces asbestos in soil. It is designed to incorporate the elements of the Asbestos Regulations.

Note If during the course of the works the concentrations of asbestos become more than “trace “ then works should stop immediately and the area cleared as works will need to be undertaken as Asbestos removal works which requires a site specific asbestos work plan and alternative methodologies which are not covered in this document.

This Control Plan has two parts

Complete part A when planning for the asbestos related excavation works Complete part

B after the asbestos related excavation works are complete.

Part A To be completed before asbestos related excavation works starts

Prepared by Date For Asbestos Contaminated excavation works and removal at Site 9 Lady Elizabeth Lane, on behalf of the site owner Wellington City Council



Identification

Have asbestos Records been reviewed: Yes (by Tonkin and Taylor)

Location of Trace asbestos in soil Please refer Tonkin a& Taylor report which identifies further testing to be carried out. It is suspected within the demolition of Shed 15 this occurred.

The following shall be notified prior to asbestos related works commencing:

Client Representative Willis Bond Project Manager TBC

LT McGuinness Construction Director Dan McGuinness [email protected] LTM

McGuinness Project Manager Jeff McHardy [email protected] LTM

McGuinness Site Health and Safety Officer Chris Diston [email protected] LTM

McGuinness Environmental Officer TBC

Excavation Sub Contractor Health and Safety Officer TBC

Supervisors under taking the works TBC

TBC




Workers

List the workers who will be working at the asbestos contaminated soil section of the site:

Name Supervisor

Timing of removal work

Planned start date

Emergency and service contact details are listed in page 20 in the excavation section of this Construction Management Plan.

Personal Protective Equipment (PPE)

The following PPE must be worn within the Asbestos contaminated ground area whilst removal works are being undertaken.

Fitted asbestos respirator

Disposable Overalls Gloves

Gumboots

Demarcation and Isolation of Asbestos Zone

The asbestos area of the contamination on the site is to be clearly marked using a stakes, signage and Asbestos Hazard Tape. This will be put in place before and during the excavation works. The stakes and Asbestos Hazard tape is to be erected a minimum 5m beyond the area of contamination to provide a safety buffer zone.

The health and safety site map will show the Boundary of the Isolated work area where trace level contamination is presence. Persons entering this area will be advised of the trace level asbestos contamination in the marked and isolated area during the site-specific health and safety induction process, this will include all persons that enter the site including Engineers, Architects etc.

Reassurance Air monitoring will be undertaken downwind of the contaminated area during the excavation works.

The air monitoring to be undertaken a competent and qualified company to undertake this works.

Company TBC

Contact TBC

Address TBC



Number of air monitors One (set at the downwind boundary of the asbestos related works)

Frequency of samples/ testing Air monitoring and testing is to be undertaken on each of the first two days of the asbestos related excavation works. Then at a minimum of every 5 working days thereafter, or as specifically advised by the licenced asbestos assessor.

Decontamination facilities

A decontamination room will be provided at the entry to the decontamination zone. The decontamination room will have an area for removal of overalls, changing of clothes, supply fresh supply of disposable overalls and other PPE plus suitable asbestos waste bins. All solid waste will be treated as contaminated waste and will be removed from site in 200 micron thick Asbestos Waste bags and disposed of at an appropriate land fill, documentation will be provided.

Temporary water will be provided to the exterior of this room for the washing of gumboots prior to entry.

At the truck entry to the contaminated soil zone

A temporary truck wheel wash will be required at the entry to the contaminated zone.

All trucks, diggers and equipment used for the excavation and removal works will be required to use this wash down facility before leaving the contamination zone.

Management and Disposal of Asbestos Contaminated Soil

Water Misting of the asbestos contaminated zone is required during the excavation phase, up until a suitable geotextile cloth cover is installed to capture any dust and asbestos fibres.

The excavated contaminated asbestos will be removed immediately from site where practicable.

Any stock piled asbestos contaminated spoil will need to be covered with polythene and kept damp before being removed at the earliest practicable time.

The trucks trays transporting the asbestos contaminated spoil will need to be fully lined with 2 layers of heavy weight polythene, which will be required to be wrapped and sealed entirely around the contaminated soil load. Further to this a full cover or cargo net is required to protect the sealed polythene from unravelling.

The asbestos contaminated soil can only then be transported to and disposed at WCC land fill for asbestos waste

Encapsulation at Completion of Excavation

All exposed faces of the excavation works are to be covered in a geotextile matt, with steel pins at 2m centres each way and along edges, with a minimum overlap of 500mm between joins.

At completion of this stage of the works the clients contaminated land specialist, Tonkin and Taylor is to sign off on the Geotextile installation, including a photographic survey.

Following approval of the geotextile installation the asbestos controls and decontamination facilities can be appropriately cleaned and removed and the enclosure markings removed.

Declaration and sign-off

I declare that the information contained in part A is accurate to the best of my knowledge

Signed by Date



Part B To be completed asbestos related excavation works above are complete.

Start date of asbestos related works ………………………. Completion date ……………………….

List of significant stages the asbestos related works was undertaken in

Total quantity of asbestos contaminated soil deposed of site to asbestos contaminated landfill.

Air Monitoring

Can the area be reoccupied and did the final test result not exceed 0.01 fibres/ml

Yes No

Attach summary air monitoring results

The Site Emergency Plan is to maintain the location of the asbestos contamination zone, as any subsequent works will be required to conform to this Asbestos Related Works Control Plan.

Clearance Declaration and sign-off

I declare that the information contained in part B is accurate to the best of my knowledge and that I could find no visible asbestos or likely residue

The geotextile encapsulation is in good condition and has been laid in a professional manner and is fit for purpose.

The final air monitoring results shows the respirable fibre level does not exceed 0.01 fibres/ml and

As far as can be determined from the visual clearance inspection, the contaminated spoil area does not pose a risk to health and safety from exposure to asbestos.

Adequate provision has been made in the site-specific safety plan that process is in place identifying this area and what asbestos related works management process need to be undertaken should the Geotextile matt and soil underneath need to be disturb at a future date.

Signed by Date

Independent Asbestos Advisor TBA



SECTION 16.0

ENVIRONMENTAL MANAGEMENT PLAN VISION

LT McGuinness Limited’s environmental objective is to be regarded as an environmentally responsible construction company.

LT McGuinness Limited is committed to creating a sustainable future by utilising both people and resources in the care of the environment during the construction process in an effort to maintain the quality of the environment for future generations.

POLICY

To support our environmental vision, L T McGuinness Limited will:

□ Implement and maintain environmental systems, including measurable objectives and targets.

□ Ensure employees, subcontractors and suppliers are made aware of environmental issues through ongoing training, communication and reporting.

□ Comply with environmental legislation, RMA requirements and relevant regulations.

□ Ensure that all construction works, where applicable, are carried out in accordance with the Heritage Management Plan.

□ Ensure staff are accountable and provided with adequate resources to deliver good environmental outcomes.

□ Ensure any archaeological finds will be dealt with in accordance with the Accidental Discovery Protocol.

□ Where possible we will reduce, reuse or recycle materials to minimise waste in line with REBRI guidelines.

□ Regularly review this environmental policy.

ROLES AND RESPONSIBILITIES

There are four groups with responsibility for the environmental management of the contract;

□ The Client;

□ LT McGuinness Limited together with its subcontractors;

□ Greater Wellington Regional Council and Wellington City Council

□ The client’s consultants who audit the works and monitor compliance with resource consent conditions and the environmental management plan.

The Consultants are as follows:

Architect: Athfield Architects

Structural Engineer: Dunning Thornton Consultants

Building Services Engineer COR Associates

Geotechnical Engineer: Tonkin + Taylor

LT McGuinness Limited shall appoint an Environmental Officer responsible for the environmental performance and compliance where they apply to the works in the contract.



The Environmental Officer will liaise directly with the Site Project Manager.

ENVIRONMENTAL CONSIDERATIONS AS A RESULT OF CONSTRUCTION ACTIVITY

• Dirt and Droppings

• Damage and Nuisance

• Construction Noise

• Dust Mitigation

• Waste Management

• Wind

• Construction Traffic

• Cement, Grout and Concrete waste

• Fire Prevention

• Contaminated Spoil

DIRT AND DROPPINGS

Dirt and droppings deposited on public or private thoroughfares from vehicles servicing the site are to be removed by the contractor to the satisfaction of the appropriate authorities. In the event roads or footpaths are spoiled by dirt and droppings, we will ensure roads and footpaths are returned to their original state by means of road sweepers, yard brooms and collection equipment, road wash and wet vacuuming as necessary. We will have a permanent gateman that will monitor the operations both into and from site. Wheel wash stations and truck covers are the prevention measures.

DAMAGE AND NUISANCE

LT McGuinness Limited will take all reasonable precautions to prevent damage and nuisance from water, fire, smoke, dust, rubbish and all other hazards resulting from the construction works.

A photographic Building Damage Record will be undertaken of the adjoining neighbouring buildings prior to commencement of any construction.

CONSTRUCTION NOISE

The increased noise associated with the construction activities will be as a result of the construction works, these include:

□ Excavation Pneumatic breaking; Saw cutting

□ Concrete pumping and placing; Construction plant.

Significant construction activities will take place during daytime 7:30 am to 6 pm hours weekdays and Saturdays as far as is reasonable practical and noise will be managed in accordance with the requirements of the Construction Noise and Management Plan and applicable resource consent conditions.

DUST MITIGATION

Hoardings/ fences with scrim will be erected around the construction site. The screens will reduce the effects of dust produced by the demolition work. Activities which generate dust will be monitored closely along with weather conditions so any foreseeable issues will be minimised. As per the EDSC plan, housekeeping will be maintained vigilantly with routine sweep ups to minimise dust clouds during construction phase. Water misters and task isolating measures will be implemented. The use of stockpiles and handling of excavated materials will be limited.



WASTE MANAGEMENT

A waste management plan for the project will be completed and reviewed on an ongoing basis in line with REBRI guidelines. Refer to appendix section 14 for Waste Management Plan.

This will incorporate the following:

□ A waste management system and process for separating of waste.

□ As much as possible waste materials recycled and/or reused.

□ Tracking and monitoring of waste.

WIND

The exposed nature of the site will require constant monitoring as the wind poses significant issues which need to be addressed:

□ Dust from demolition;

□ Concrete slurry from skip and pump;

□ General construction debris.

All of the above will require constant monitoring during windy weather. To mitigate the effects by keeping exposed areas free from built up piles of construction debris, dampening down where necessary, proper containment and removal of concrete slurry. All temporary structural elements will be designed by a certified engineer

CONSTRUCTION TRAFFIC

Before construction activities begin construction, temporary construction signage will be installed where deemed necessary by all parties involved. The signs will inform the public of the project and provide restrictions of access where necessary. Signs should contain main contact numbers, a brief construction description and approximate time frame of the development.

A Construction Traffic Management Plan is prepared for the project in accordance with the Wellington City Council Code of Practice for Temporary Traffic Management Control as required. The Construction Traffic Management Plan will include the following;

□ Brief description of works

□ Staging

□ Traffic and pedestrian control during the construction

□ Temporary Traffic Control to close the footpath during loading out times to be installed. This work will be carried out outside of normal working hours.

□ Truck and vehicle movements to and from site

□ Applicable signage

□ Parking and turning areas

□ Public safety

□ STMS and TC details



CEMENT, GROUT AND CONCRETE WASTE

Concrete has the potential to impact upon water quality through the release of fine particles through a localised increase in pH. This is most likely to occur during the washing down of cement truck sluices prior to departing the site.

No waste concrete or grout materials are to be discharged down (or where they can run into) storm water grates or into the marine environment.

Concrete trucks after placing are to wash down in the designated wash bay into collection buckets and containers or return to their depot for cleaning. Pump trucks are to blow back into the concrete truck for disposal back at the quarry.

Waste concrete will be stored in appropriate skips for later removal.

All vehicles requiring cleaning will be washed over the site wheel wash system which consists of either a 4-sided asphalt bund containing no smaller than 70AP ballast aggregate and lined with filter cloth to ensure no waste product is discharged into the local storm water systems or a purpose made cattle stop type tray system with discharge points filtered. The wheel wash will be maintained regularly as part of our daily inspection regime, the resulting waste products are then removed and placed in suitable collection bins for removal from site.

CONTAMINATED GROUND

Following preliminary investigations, ground contamination has been identified on site as per report from Tonkin Taylor (please see appendix 1). It is likely that the contamination originated from fill used to form the reclamation and / or from historical activities at the site. It is expected that asbestos is located within the surface soils, but further testing will be required to confirm this.

The presence of ground contamination may have the following implications:

□ Additional health and safety requirements during the works.

□ Landfill disposal of surplus soil that has to be disposed off-site (i.e., not clean fill).

□ Pre-treatment would be required if highly contaminated material is present.

□ Odour management during works and to prevent odour entering buildings.

□ Contaminated Site Management Plan before works begin and a Site Validation Report on completion of works.

□ A Long-Term Site Management Plan if contamination remains onsite (e.g., beneath building or paving).

All of the above will be confirmed on final testing and design and an updated and agreed Construction Management Plan will be established prior to any construction activities commencing on site. This CMP will incorporate a detailed Contaminated Site Management Plan, and all ground works will be carried out in accordance with the CSMP, which will be reviewed and updated regularly.



APPENDICES: 1.0 Appendix 1 -Tonkin and Taylor – Contamination Report

2.0 Appendix 2 – Tonkin and Taylor – Geotechnical Report

3.0 Appendix 3 - Dunning Thornton – Structural Effects and Construction Methodology

1

Tonkin & Taylor Pty Ltd Ground Contamination Assessment - North Kumutoto Site 9 - Customhouse Quay, Wellington Waterfront Willis Bond & Co Ltd

July 2017 Job No: 86190

REPORT

Ground Contamination Assessment - North Kumutoto Site 9

Customhouse Quay, Wellington Waterfront

Prepared for

Willis Bond & Co Ltd

Prepared by

Tonkin & Taylor Pty Ltd

Date

July 2017

Job Number

86190

Distribution:

Willis Bond & Co Ltd Electronic Copy

Tonkin & Taylor Pty Ltd (FILE) 1 copy


July 2017 Job No: 86190

Table of contents

1 Introduction 1 1.1 Background 1 1.2 Objective 1 1.3 Scope of work 1

2 Site characteristics 2 2.1 Site location and description 2 2.2 Geology and hydrogeology 2

3 Site history 4 3.1 WCC Archives search 4 3.2 Historical certificates of title 4 3.3 Historical photographs 4 3.4 GWRC Selected Land Use Register 6 3.5 Summary of site history 6 3.6 Previous site investigation 6

4 Potential for contamination 7 4.1 Preliminary conceptual site model 7

5 Regulatory Review 9 5.1 Land use consents 9 5.2 Discharge consents 9 5.3 Asbestos 9

6 Further Investigation 10

7 Conclusions 11

8 Applicability 1

Appendix A : Figure

Appendix B : Historical Photographs

Appendix C : SLUR Query

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July 2017 Job No: 86190

1 Introduction

Tonkin & Taylor (T+T) has been engaged by Willis Bond & Co Ltd (WB) to undertake a desktop contamination investigation of North Kumutoto Site 9, located on the Wellington Waterfront, Customhouse Quay, Wellington (the site).

This report has been prepared in accordance with our proposal dated 31 May 2017.

1.1 Background

We understand that the approximately 1,000 m2 site is to be redeveloped for commercial use, with a basement carpark (a hoist-serviced car parking pit) extending to approximately 18 m below existing ground level (bgl), and five aboveground levels.

1.2 Objective

The objective of this report is to review site history and characteristics to:

Determine if any contamination-related resource consents are likely to be required for the proposed development; and

Establish what, if any, sampling is required to support the consent application(s).

1.3 Scope of work

The scope of works included:

Review of previous desktop assessments and investigations for the site and immediate surrounds;

Review of Thomas Ward historical map (1892);

Review of the Selected Land Use Register (SLUR) information from Greater Wellington Regional Council (GWRC);

Request and review Wellington City Council (WCC) Archives files for the site;

Review of historical aerial photographs from WCC’s GIS, Alexander Turnbull Library (online collection), and Opus;

Site inspection;

Preparation of this report.

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July 2017 Job No: 86190

2 Site characteristics

2.1 Site location and description

The location of the site is shown in Map 2.1.

Map 2.1: Site Location Plan, north is up (Source: GWRC)

The investigation area is illustrated in Figure 1, Appendix A.

Site 9 is located at the northern end of Queens Wharf, as shown on Figure 1, Appendix A. It is roughly rectangular in shape, occupying a portion of Lot 1 DP 490659.

Site 9 is currently used as a car park, southeast of the intersection of Waterloo Quay and Ballance Street, Wellington. The site is relatively flat and paved in asphalt.

2.2 Geology and hydrogeology

The published geological map1, describes the site as being underlain by reclaimed land, with fill consisting of domestic waste, sand, boulders and rock. The majority of the land beneath Site 9 was reclaimed in the early 1900s2. The pre-European settlement shoreline was approximately 200 –

1 Begg, J.G., Johnston, M. R., (compilers), 2000, Geology of the Wellington Area, 1:250,000 geological map 10. 1 sheet + 64p. Lower Hutt, New Zealand, Institute of Geological and Nuclear Sciences Limited. 2 S.B Semmens (2010). An Engineering Geological Investigation of the seismic subsoil classes in the Central Wellington Commercial Area. Volume One: Thesis.

Site

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July 2017 Job No: 86190

300 m west of the site. The reclamation fill is described as “locally quarried, end dumped, weathered greywacke sandstone, mudstone and spoil, domestic waste (bricks, glass, wood etc.), sand, boulders and engineered fill poorly compacted to compact”.

Land to the east and south-east of the site was reclaimed in the 1970s using quarried gravel.

There are no surface water features on the site. Lambton Harbour is approximately 10 - 20 m east of the site.

Groundwater in the surrounding area is expected to discharge eastwards, toward Lambton Harbour and the wider Wellington Harbour.

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July 2017 Job No: 86190

3 Site history

Site history information has been established from a variety of sources, including published information, T+T records, WCC Archives files, GWRC records, and historical aerial photographs. All records viewed are summarised in this section.

3.1 WCC Archives search

Wellington City Council Archives were searched, and the following information obtained for the site:

In 1904, Shed 15 was constructed on the site.

In 1943, the galvanised iron roof of Shed 15 was replaced with asbestos sheeting.

In 1944, fuel oil burners were installed, including a small oil storage tank (location not identified).

In 1961, a fire occurred in Shed 15, due to a gas ring setting light to lining boards.

In 1985, Shed 15 was demolished.

Identified activities in Shed 15 are:

1924 – 1959: Cafeteria/bakehouse/Watersiders’ Wharf restaurant.

1941: Waterside Water Bureau board.

1967 – 1975: Basketball/badminton hall.

1977: NZ police – storage of portable equipment for operation of research vessel, possibly including oil drums.

1978: Seaport Operations Ltd – gear store.

1981: Fisheries Research Division of the Ministry of Agriculture and Fisheries.

1985: Wellington District Surf Life Saving Association.

3.2 Historical certificates of title

Historical certificates of title dating back to 1894 were reviewed during a previous assessment of the site (T+T, 2009). They indicate that the site was previously owned by the predecessors of Wellington Waterfront Limited (Lambton Harbour Overview Limited and Wellington Harbour Board).

3.3 Historical photographs

Historical photographs from WCC’s GIS, and Alexander Turnbull Library (online collection), and Opus were reviewed. The key observations of the site and surroundings are summarised in Table 3.1.

Table 3.1: Summary of historical aerial photographs

Date (Source) Onsite features Offsite features

1905

(Alexander Turnbull Library oblique)

A brick structure is present, consistent with a warehouse with a high ceiling or a double storey building. The e site is on the waterfront. Scaffolding is visible on the building. The building covers the entire footprint of Site 9.

The adjacent building to the north is visible, a four storey brick building.

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July 2017 Job No: 86190

Date (Source) Onsite features Offsite features

1934


The roof of the building on the site can be seen. The site appears to be directly adjacent to the waterfront.

A wharf is located directly east of the site, and sheds to the south.

The site appears to be in a commercial district, with industrial facilities along the wharf area, and a railway area to the north-west.

1941

(Opus)

No significant changes evident. No significant changes evident.

1951


No significant changes evident. No significant changes evident.

1954

(WCC GIS)

No significant changes evident. A smaller building/shed is visible between the site and the building to the north.

1969

(Opus)

No significant changes evident. The multi-storey building to the north has been demolished, but the shed remains.

Buildings to the west have been demolished.

1977

(WCC archives)

No significant changes evident. The land adjacent to the eastern site boundary has been reclaimed as the harbour is no longer directly adjacent to the eastern site boundary.

1996

(WCC GIS)

The site building has been demolished, and the site is being utilised as a car park.

Site to the north is being used as car parking.

Reclaimed land to the south-east along the waterfront is being used as car parking.

2006

(WCC GIS)

No significant changes evident. Construction underway on the site to the south-east on the waterfront.

2013

(WCC GIS)

No significant changes evident. Waterfront development to south-east is complete.

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July 2017 Job No: 86190

3.4 GWRC Selected Land Use Register

Site 9 is not listed on GWRC’s SLUR database of potentially contaminated sites. SLUR listings for surrounding sites within 100 m were reviewed, and the details are summarised in Table 3.2.

Table 3.2: SLUR review

Site Distance/

direction from site

SLUR description1

7 Queens Wharf

50 m east

(Hydraulically down-gradient).

A 10,000 L aboveground fuel tank is located on Queens Wharf. No further information as to the age or condition of the tank.

20-26 Ballance Street

50 m north-west

(Hydraulically up-gradient).

The site stores 1,200 L of diesel to fuel emergency generator. No records of location of the storage tank and what, if any potential contamination is present on the site.

20 Customhouse Quay

60 m south-west

(Hydraulically cross-gradient)

Hydrocarbons are stored on the site in an underground storage tank. No records of any environmental investigations having taken place on the site.

1 GWRC online GIS, SLUR overlay. http://mapping.gw.govt.nz/GW/GWpublicmap/. Accessed online 3 July 2017.

3.5 Summary of site history

The site was reclaimed in the early 1900s using a mixture of quarried fill and demolition debris. The site was originally adjacent to the harbour waterfront, until land to the east and south-east was reclaimed in the 1970s using quarried gravel.

Shed 15 was constructed on the site in 1904. Shed 15 had asbestos sheeting installed in the roof in late 1943, fuel oil burners installed in 1944 (with a small storage tank) and possibly oil drum storage in 1977. It has been used as a cafeteria, offices, storage and recreation. Shed 15 was demolished in 1985. Since then, the site has been used as a parking lot.

3.6 Previous site investigation

In 2009, T+T reported on a combined geotechnical and ground contamination investigation of Site 9 and the area to the east. The work was undertaken to inform proposed development of the area, on behalf of Wellington Waterfront Ltd.

The investigation comprised drilling nine boreholes and four window sample holes in total. Four of the boreholes were within the boundary of Site 9. Limited soil sampling and testing was conducted as part of the investigation works.

The boreholes within Site 9 encountered reclamation fill to between 3.5 and 6.5 m depth, comprising sands and sandy gravels. The report notes that some reclamation fill layers had a slight hydrocarbon odour. Groundwater was encountered at about 1.5m depth. Beneath the reclamation fill were natural harbour floor deposits and alluvium.

Six reclamation fill samples were collected from the four boreholes within Site 9. Samples of the reclamation fill were collected between 0.5 m bgl and 4.0 m bgl. All samples were tested for a suite of 7 metals, and 2 samples were tested for polycyclic aromatic hydrocarbons (PAH).

All results for Site 9 were well below guidelines for commercial use of the site, however background concentrations were exceeded. Landfill screening criteria were exceeded for copper, lead and zinc in three samples (no leachability testing was undertaken).

http://mapping.gw.govt.nz/GW/GWpublicmap/

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July 2017 Job No: 86190

4 Potential for contamination

Activities with the potential to cause ground contamination have been undertaken at the site. The activities, potential contaminants and an assessment of the likelihood, potential magnitude and possible extent of contamination are presented in Table 4.1.

Table 4.1: Potential for contamination

Land use/activity

Potential contaminants

Likelihood, magnitude and possible extent of contamination

HAIL reference

Presence of reclamation fill beneath the site

The source of the reclamation fill at the site is unknown, however could potentially include metals, polycyclic aromatic hydrocarbons (PAH), and asbestos.

Reclamation fill encountered to between 3.5 m to 6.5 m depth beneath the site; and likely deeper in easternmost part of site.

Soil investigation found elevated concentrations of metals above landfill acceptance screening criteria (copper, lead, zinc), and metals and PAHs above background concentrations. Land use acceptance criteria were not exceeded.

I (potentially)

Demolition of Shed 15, which contained asbestos roofing materials

Asbestos Asbestos testing has not been undertaken to date. If ACM were present due to demolition of Shed 15, it would likely be limited to near-surface soils, however, the presence of asbestos as depth cannot be discounted at this stage.

No

Use of fuel oils, including a small storage tank and storage of oil drums

Hydrocarbons If leakage occurred, then the soils could potentially be contaminated to depth. Previous limited soil investigation at the site found a variable fill layer with hydrocarbon odour.

A17 Storage tanks or drums for fuel, chemicals or liquid waste.

We understand that GWRC consider that Shed 13, approximately 20m to the south, was potentially contaminated and that migration of contaminants could occur from there to Site 9. However, groundwater flow from Shed 13 is likely to be eastwards towards the harbour, rather than northwards towards Shed 15. On this basis we do not consider that there is a significant risk of ground contamination migration from Shed 13 to Shed 15.

4.1 Preliminary conceptual site model

For there to be an effect from the proposed activity there has to be a contamination source and a mechanism (pathway) for contamination to affect human health or the environment (receptor). Table 4.1 summarises potential sources, pathways, and receptors in order to assess possible environmental and human health risks associated with the known site conditions.

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July 2017 Job No: 86190

Table 4.2: Summary of potential sources, pathways, and receptors

Phase Potential source Potential pathway Onsite Receptors Offsite Receptors

During construction works.

Contaminated fill

(asbestos, TPH, PAH, metals).

Inhalation (dust), dermal contact, incidental ingestion.

Construction workers.

Surrounding commercial workers.

General public –road, pedestrians.

Discharge via stormwater runoff.

Contaminated groundwater generated during dewatering

(TPH, PAH, metals).

Discharge to harbour via stormwater network.

Construction workers.

Flora and fauna of Wellington Harbour.

Recreational harbour users.

Future commercial use.

Contaminated fill beneath building

(asbestos, TPH, PAH, metals).

Inhalation (dust), dermal contact, incidental ingestion.

Maintenance workers.

None.

Contaminated groundwater beneath building.

(TPH, PAH, metals)

Vapour intrusion through soil profile (volatile components of TPH only).

Movement of groundwater to discharge point (harbour).

Commercial workers.

Flora and fauna of Wellington Harbour (note; exposure, if any, not changed by proposed development)

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July 2017 Job No: 86190

5 Regulatory Review

5.1 Land use consents

Based on the potential presence of contamination and the volume of earthworks required for the proposed basement, resource consent is expected to be required from WCC under the National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health (NES Soil), for disturbing soil and change of use. Resource consent is also likely required under the Wellington District Plan for works on a contaminated site.

The following reports are likely to be required as a condition of resource consent for the proposed works:

A Contamination Site Management Plan (CSMP) setting out controls to minimise exposure to contaminants during works, and inspection/monitoring and reporting requirements (e.g., tracking loads of contaminated soil disposed to landfill).

A Site Validation Report (SVR) to be provided to WCC on completion of the works, documenting the works carried out, collating inspection and monitoring records, and landfill receipts.

5.2 Discharge consents

Resource consent is likely to be required from GWRC for the potential discharge of contaminants to land, including discharge of groundwater to the reticulated stormwater system, under Rule 2 of the Regional Plan for Discharges to Land (RPDL) and Rule R53 of the Proposed Natural Resources Plan (PNRP; discretionary activity).

If any contaminated soil is discharged offsite anywhere other than a consented landfill, resource consent would be required from GWRC under Rule 22 of the RPDL and Rule R56 of the PNRP.

A permit from WCC would also be required to discharge groundwater from dewatering works to stormwater or to sewer (trade waste).

5.3 Asbestos

The Health and Safety at Work (Asbestos) Regulation (2016) was enacted on 1 April 2016. The regulation sets out requirements for manufacturing, supplying, transporting, storing, removing, using, installing, handling, treating, disposing of, or disturbing asbestos or ACM. Worksafe New Zealand has prepared and approved a Code of Practice: Management and Removal of Asbestos (November 2016) which includes preliminary provisions related to asbestos in soils. Further guidance for asbestos in soils is being prepared by BRANZ. The key requirements of the ACoP are that works must be undertaken with appropriate asbestos controls in place and that contaminated materials removed must be disposed in a place approved by Council. Soil testing is required to assess if these regulations apply to the proposed development.

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July 2017 Job No: 86190

6 Further Investigation

The desk study has identified potential sources of contamination on the site, primarily associated with presence of reclamation fill, the historic presence of asbestos within a building that was demolished, and storage of fuel oils. Preliminary investigation data indicate that metals, PAH, and TPH contamination is present, which will have implications for soil management during earthworks and the works may require ground contamination-related resource consents.

Additional intrusive investigations would be needed to reduce uncertainty regarding the nature and extent of contamination, in particular whether asbestos is present in the soil and whether contamination is present in the natural soils beneath the reclamation fill.

This could include, for example:

Excavation of four to five boreholes (possibly with a small number of test pits to sample surface soils).

Testing of reclamation fill samples for the presence of asbestos, total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAH) and metals.

Groundwater well installation and sampling at 1 – 2 locations and testing for metals, TPH, PAH to inform consenting and disposal requirements during dewatering for basement excavation.

The soil test results would be assessed against relevant guidelines for site use and soil management. The water test results would be assessed against water quality criteria for discharges to stormwater.

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July 2017 Job No: 86190

7 Conclusions

T+T has undertaken this investigation to determine whether HAIL activities have occurred on the site, and the potential for these activities to have resulted in ground contamination.

The site was reclaimed in the early 1900s using “a mixture of quarried fill and demolition waste. The site was originally adjacent to the harbour waterfront, until land to the east and south-east was reclaimed in the 1970s using quarried gravel.

Shed 15 was constructed on the site in 1904. Shed 15 had asbestos sheeting installed in the roof in late 1943, fuel oil burners installed in 1944 (with a small storage tank) and possibly oil drum storage in 1977. It was used as a cafeteria, offices, storage and recreation. Shed 15 was demolished in 1985, and the site has been used as a parking lot since that time.

Dependent on the results of intrusive investigation works and the volumes of soil to be disturbed, ground contamination related consents may be required for the proposed site development:

NES Soil consent for soil disturbance of contaminated soil.

District Plan Rule 32, as it applies to protection of the environment.

Regional Plan rules for discharges to land - dewatering works

Permit from WCC to discharge groundwater to stormwater or to sewer (trade waste).

Requirements of the Health and Safety at Work (Asbestos) Regulations, if intrusive works identify asbestos to be present in the soils.

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July 2017 Job No: 86190

8 Applicability

This report has been prepared for the exclusive use of our client Willis Bond & Co Ltd, with respect to the particular brief given to us and it may not be relied upon in other contexts or for any other purpose, or by any person other than our client, without our prior written agreement.

Tonkin & Taylor Pty Ltd

Report prepared by: Authorised for Tonkin & Taylor Pty Ltd by:

pp.......................................................... pp...........................….......…...............

James Allison Stuart Palmer

Environmental Scientist Project Director

JTA \\weldc1.ttgroup.local\data\rep\live\tt\projects\86190\issueddocuments\contaminated land\jta20170620gca.docx

Appendix A : Figure

LEGEND

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TTMAPREF1496198587.76

TT Proj Ref:

TT Map Ref:

Created By:Approved By:

105 Carlton Gore Road, Newmarket, Aucklandwww.tonkintaylor.co.nz

Created On: 31/05/2017BJD

FIGURE No.1

0 8 16 24 32 40 (m)1:750A3 SCALE:

Notes:1. Geotechnical/Environmental field investigation locations are oftensourced from historical data sources and may be approximate.2. Road Centrelines, Property Title sourced from Land InformationNew Zealand. Licenced under Creative Commons 3.0 NZ, CC-BY.3. Imagery Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS UserCommunity

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Ballance Street

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erston

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o Quay

Waring Taylor Street

BH 05

BH06

BH-07

BH-08

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Figure 1

86190

1

Mass concrete seawall (1901).Location is approximate only.

Machine boreholeSite 10

Site 9

Site 8

Approximate proposed building footprint

cjhh

Text Box

8

cjhh

Text Box

7

BJD

Polygon Line

BJD

Callout

Shed 15 (historical) building footprint

BJD

Callout

Shed 13

Appendix B : Historical Photographs

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SCALE (AT A4 SIZE)

PROJECT No. FIG. No. RevA1 086190

Not to scale

/working/desktop/aerials

jta 20/06/17

N

Tonkin & Taylor Pty LtdEnvironmental and Engineering Consultants

Level 4, 2 Hunter St, Wellington, 6011www.tonkintaylor.co.nz

Willis BondPreliminary Site Investigation

1905 PhotographSite 9, Wellington

Site

Source: Alexander Turnbull Library Collection

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1934 Aerial PhotographSite 9, Wellington

Site


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Approximate site

Source: OPUS aerial photograph collection

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NTonkin & Taylor Pty Ltd

Environmental and Engineering ConsultantsLevel 4, 2 Hunter St, Wellington, 6011

www.tonkintaylor.co.nz



Site


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Approximate site

Source: WCC GIS

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N





Approximate site

Source: OPUS aerial photograph collection

DRAWN

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Approximate site

Source: WCC GIS

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Approximate site

Source: WCC GIS

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Approximate site

Source: WCC GIS

Appendix C : SLUR Query

GWRC Web Map

GWRC/LINZ/Terralink InternationalGWRC, WAGGIS, LINZ, NZAM

SLUR (Selected Land Use Register) - Selected Land Use Register

Addresses

All Roads Labels

Rail Stations

Parcel Boundaries

July 4, 2017

GWRC

0 0.015 0.030.0075 mi

0 0.03 0.060.015 km

1:1,128

GWRC Mapping Services

1

Tonkin & Taylor LtdSite Management Plan - North Kumutoto Site 9 - Customhouse Quay, Wellington WaterfrontWillis Bond Capital Partners No. 3 Limited

January 2018Job No: 86190

REPORT

Site Management Plan -North Kumutoto Site 9Customhouse Quay, WellingtonWaterfront

Prepared forWillis Bond Capital Partners No. 3 LimitedPrepared byTonkin & Taylor LtdDateJanuary 2018Job Number86190

Document Control

Title: Site Management Plan - North Kumutoto Site 9

Date Version Description Prepared by: Reviewed by: Authorised by:

31/1/18 0 Draft for resource consent M Robyns C Hillman

Distribution:

Willis Bond Capital Partners No. 3 Limited 1 electronic copy

Tonkin & Taylor Ltd (FILE) 1 copy



Table of contents

1 Introduction 11.1 Site background 11.2 Proposed work 1

2 Objective of this SMP 22.1 Regulatory compliance 22.2 Applicability 2

3 Roles and responsibilities 33.1 Site controller 33.2 Contaminated land specialist 33.3 Health and safety officer 33.4 Implementation 33.5 Distribution 33.6 Review and update 4

4 Site management procedures 54.1 Overview of site management procedures 54.2 Pre-works investigations 54.3 Health and safety 54.4 Soil disturbance procedures 54.5 Soil disposal 64.6 Dewatering procedures 64.7 Imported material 6

5 Earthworks controls 75.1 Erosion and sediment controls 75.2 Dust controls 75.3 Stockpiling controls 8

6 Contingency measures 96.1 Emergency procedures 96.2 Unforeseen contamination procedures 96.3 Asbestos containing material 106.4 Water discharges 10

7 Validation and report 117.1 Groundwater discharge reporting 117.2 Validation 117.3 Information required from the contractor 117.4 Works observation 117.5 Validation reporting 117.6 Ongoing monitoring and management 12

8 Applicability 13

Appendix A : Additional procedures for asbestos-related works

1



1 Introduction

Tonkin & Taylor Ltd has been commissioned by Willis Bond Capital Partners No. 3 Limited to preparea Site Management Plan (SMP) to manage earthworks in contaminated soil at North Kumutoto Site9, located on the Wellington Waterfront, Customhouse Quay, Wellington (the site).

This SMP has been prepared to detail excavation procedures, monitoring, management and healthand safety requirements during the proposed earthworks and to provide procedures for unexpectedcontamination should it be encountered during the works.

This SMP has been prepared in accordance with our proposal dated 9 January 2018.

The procedures detailed in the SMP are provisional on completing site investigation works and willrequire updating prior to the commencement of the proposed earthworks. Once updated, the SMPwill provide Willis Bond Capital Partners No. 3 Limited and their contractors with procedures thatshall be implemented during earthworks in contaminated soil.

1.1 Site background

Site 9 is located at the northern end of Queens Wharf. It is roughly rectangular in shape and occupiesa portion of Lot 1 DP 490659.

A preliminary site investigation (PSI) undertaken by T+T in 20171 identified that the site wasreclaimed in the early 1900s using a mixture of quarried fill and demolition waste. The site wasoriginally adjacent to the harbour waterfront, until land to the east and south-east was reclaimed inthe 1970s using quarried gravel. Shed 15 was constructed on the site in 1904 with asbestos sheetinginstalled in the roof in late 1943. Fuel oil burners were installed in 1944 (with a small storage tank)and there was possibly oil drum storage in 1977. Shed 15 was used as a cafeteria, offices, storageand recreation. Shed 15 was demolished in 1985, and the site has since been used as a parking lot.

The above activities have the potential to have contaminated soil and groundwater and anassessment of the likelihood, potential magnitude and possible extent of contamination is presentedin the July 2017 PSI. The likely contaminants of concern are as follows:

· Metals;· Polycyclic aromatic hydrocarbons (PAHs);· Total petroleum hydrocarbon (TPH) and· Asbestos.

Metals, PAH and suspected TPH have been identified within the soils on the site and asbestos hasbeen identified in soils in the vicinity of the site.

1.2 Proposed work

It is understood that Willis Bond Capital Partners No. 3 Limited intends to redevelop theapproximately 1,000 m2 site for commercial use.

1 T+T, 2017. Ground Contamination Assessment – North Kumutoto Site 9 – Customhouse Quay, Wellington Waterfront.Tonkin + Taylor, July 2017.

2



2 Objective of this SMP

This SMP has been prepared to provide methods and procedures for the management ofcontaminated material, health and safety procedures and measures for mitigating possibledischarges during the development of the site. It also outlines the reporting required on completionof the earthworks to verify the site condition and confirm measures set out in this SMP werefollowed.

2.1 Regulatory compliance

This SMP has been prepared in general accordance with Ministry for the Environment’s (MfE)Contaminated Land Management Guidelines No. 1 – Guidelines for Reporting on Contaminated Sitesin New Zealand.

This SMP is also prepared in general accordance with the soil disturbance related controls referredto in the Resource Management Act (National Environmental Standard for Assessing and ManagingContaminants in Soil to Protect Human Health) Regulations 2011 (NES Soils). The persons preparingand certifying this SMP are suitably qualified and experienced practitioners as required by the NESSoil and defined in the NES Soil User’s Guide (April 2012).

2.2 Applicability

This SMP provides a framework for managing contamination hazards on site by identifying potentialhazards and proposing mitigation measures relevant to the known site conditions at the time ofwriting. This SMP provides information and options to manage Health & Safety and environmentalprotection, but is not intended to relieve the controller of the place of work of either theirresponsibility for their workers, contractors and the public, or their responsibility for protection ofthe environment.

The provisions of this SMP are mandatory for all persons (employees, contractor andsub-contractors) who will be involved in undertaking any of the proposed works.

It is recommended that any persons undertaking controlled activities develop a Job SafetyEnvironmental Analysis (JSEA) to complement this SMP and to address other health and safetyrequirements that may be applicable to their particular works. This document should also bemodified to address any specific health, safety or environmental issues that may arise during theworks.

The SMP has been prepared on the basis of information available at the date of preparation. Thenature and continuity of subsoil away from sample locations are inferred and it must be appreciatedthat actual conditions could vary from the assumed model.

3



3 Roles and responsibilities

3.1 Site controller

The Site Controller is a key member of the earthworks team. Prior to commencing any physicalworks on site, the Contractor shall nominate a Site Controller who shall be responsible for ensuringthat all requirements of this SMP are complied with, in particular:

· Ensuring the procedures outlined in this SMP are implemented when work involves soildisturbance;

· Adherence to asbestos related works controls (preliminary controls are detailed inAppendix A);

· The timely securing of permissions and documentation to dispose of spoil at appropriateoffsite facilities;

· Adherence to the First Responder’s Checklist described in Section 7.1 of this document; and· Compliance with building and resource consent conditions during the construction works.

3.2 Contaminated land specialist

A Contaminated Land Specialist shall be engaged by Willis Bond Capital Partners No. 3 Limited toprovide advice as required during the earthworks (e.g. assessment of unexpected contamination).The Contaminated Land Specialist shall be sufficiently experienced to comply with the term “suitablyqualified and experienced practitioner” as stipulated in the NES Soil and defined in the NES SoilUsers Guide (April 2012).

3.3 Health and safety officer

An environmental and health and safety officer (HSO) shall be appointed by the Contractor for theduration of the works to ensure that contaminated land-related health and safety procedures areadhered to, alongside those required under the Contractor Health and Safety Plan. The HSO shallhave basic first aid training.

The HSO shall ensure that all relevant personnel are familiar with the application and use of thepersonal protective equipment (PPE) and procedures specified in this SMP before commencement ofsite work.

3.4 Implementation

Responsibility for the implementation of the SMP lies with the Contractor appointed by Willis BondCapital Partners No. 3 Limited and sub-contractors. In the case of unexpected contamination, theContractor shall notify Willis Bond Capital Partners No. 3 Limited (or its designated project manager)immediately. Further information regarding first response is provided in Section 7.

A contaminated land specialist (i.e. a “suitably qualified and experienced practitioner” as required bythe NES Soil regulations) will be required to carry out inspections and provide advice as requiredduring the works.

3.5 Distribution

A copy of the SMP shall be kept onsite at all times. It is the responsibility of Willis Bond CapitalPartners No. 3 Limited to distribute the plan to their Contractor. It is the Contractor’s responsibilityto distribute the SMP to any sub-contractors or other parties carrying out the earthworks.

4



3.6 Review and update

Statutory requirements or operating procedures may vary and may require that this plan beupdated.

Any variations to the SMP proposed by the Contractor shall be approved by the Contaminated LandSpecialist prior to works commencing, or the variation being implemented if works have alreadycommenced.

It is the responsibility of Willis Bond Capital Partners No. 3 Limited to distribute any changes to theplan to the Contractor. It is the Contractor’s responsibility for distribution any changes to the plan toany subcontractors or other parties carrying out earthworks.

5



4 Site management procedures

The procedures set out below are soil-related earthworks procedures for managing contaminatedsoil, while Section 5 sets out controls to manage the effects of dust, sediment, and stockpiling ofsoils at the site.

4.1 Overview of site management procedures

The procedures described in this SMP shall be implemented and followed during, but not limited to:

· All excavation, ground disturbance or intrusive works;· Temporary stockpiling of excavated materials;· Loading of excavated materials and transportation of these materials offsite (soil and/or

dewatered/surface water); and· Disposal of soil materials and/or water, including dewatering.

If the proposed works fall outside of those assumed then further investigation and/or additionalmanagement procedures may be required.

4.2 Pre-works investigations

Prior to the commencement of works, a detailed site investigation (DSI) shall be undertaken todetermine contaminant concentrations at the site and the impact ground contamination may haveon the proposed works. The procedures presented in this SMP may need to be modified to addressany changes in the contamination risk profile that may be identified once the DSI has beencompleted.

4.3 Health and safety

Details on health and safety requirements relating to contamination hazards are addressed inAppendix A. The Contractor shall put in place the following health and safety facilities relating topotential presence of contamination in soil that is being disturbed:

· Personal protective equipment (PPE) stores;· Wash facilities for workers to wash hands;· First aid point.; and· Additional facilities that must be provided if asbestos is present are set out in Appendix A.

The Contractor shall ensure that health and safety inductions are completed prior to allowingworkers to operate onsite, including for works required as part of the site establishment.

4.4 Soil disturbance procedures

The following procedures shall be adhered to during the excavation and disposal works:

· Project relevant earthwork controls shall be in place during soil disturbance as per Section 5;· Number and extent of stockpiles shall be minimised to enable effective controls to be

implemented;· The following procedures shall be adhered to when removing material from site:

- Pre-disposal planning shall be undertaken to ensure necessary permits are in place fordisposal.

- Where possible, soil shall be placed directly on to a truck.

6



- Trucks shall be loaded within the site where runoff and possible spills during loading canbe controlled and contained.

- Trucks transporting soil offsite shall have their wheels cleaned of debris and there shallbe no tracking of material offsite.

- All materials leaving the site shall be transported in trucks lined and covered inpolythene. Alternatively, lined and sealed skip bins could be utilised.

4.5 Soil disposal

Soil sampling will be required to be undertaken prior to the commencement of works to determinean appropriate, authorised disposal location. The contractor shall liaise with the landfill operatorprior to disposal, undertake any additional sampling and obtain the necessary documentation andpermission to dispose.

All weighbridge dockets must be retained by the Contractor and provided to the Contaminated LandSpecialist for inclusion in the validation report (refer to Section 8).

4.6 Dewatering procedures

Groundwater can be managed through one of the following options:

· Soakage on site (for shallow excavations above groundwater level); or· Disposal via the stormwater or tradewaste network (subject to consent conditions and

authorisation, and following appropriate treatment).

Groundwater accumulating in excavations where contaminated material is present shall be assumedto be contaminated unless testing is undertaken to confirm otherwise.

Dewatering is to be regularly observed by the Contractor in order to ensure appropriate proceduresare being followed.

Any requirements of any permits or consents for discharge of groundwater must be met at all times.

Water shall be treated before disposal to stormwater or tradewaste, for example through the use ofsettlement tanks, filters, and (if necessary) flocculants. A hydrocarbon separator system may also berequired within the treatment train.

4.7 Imported material

Any soil imported to the site shall be quarried hard fill or clean fill (e.g., for landscaping, subject togeotechnical suitability).

7



5 Earthworks controls

5.1 Erosion and sediment controls

Erosion and sediment control during construction shall be in accordance with GWRC erosion andsediment control guidelines for small sites. Prior to works commencing the following erosion andsediment control measures shall be established:

· A stabilised entry/exit point shall be established so sediment is not tracked on and off the site;and

· Silt fences and runoff diversion bunds will be installed where appropriate to capture sedimentin surface water runoff.

The following procedures shall be adhered to during the earthworks:

· Avoid work in heavy rain;· Stockpiling shall be undertaken in accordance with Section 5.3; and· Dewatering shall be undertaken in accordance with Section 4.5.

Erosion and sediment control measures shall remain in place until surface reinstatement.

To ensure good practice:

· Aggregate will be reapplied to the entry/exit point if excessive sediment build up occurs;· Erosion and sediment control measures will be upgraded/ modified where necessary;· Sediment fences will be replaced if the fabric is ripped or otherwise damaged. They will be

retrenched if needed; and· The weather conditions along with the performance of the erosion and sediment control

measures will be monitored.

Erosion and sediment control measures shall remain in place until the earthworks are complete andsuitable containment is in place.

Monitoring shall be undertaken by the Contractor and shall involve regular inspection of theearthworks areas for:

· Sediment control and compliance with the SMP; and· Water accumulation.

The Contractor shall carry out all maintenance requirements to ensure the effectiveness of thecontrol measures if inspections show that this is required.

5.2 Dust controls

There may be situations (e.g. during soil disturbance, truck loading, stockpiling) where any dustgenerated may have the potential to contain contamination, including asbestos fibres. If notsuppressed during windy conditions or during vehicle movements over contaminated soil, dischargeof airborne contaminants may occur.

To avoid dust generation, should dry or windy conditions prevail, the following control andmonitoring shall be undertaken by the Contractor in areas identified as potentially contaminated:

· Frequent spraying of water over the excavation and truck loading area to ensure that workingsurfaces remain damp;

· Wetting of the loaded material once placed on the truck; and

8



· Use of a water truck or portable water sprays in trafficked areas to dampen dust.

5.3 Stockpiling controls

If stockpiling of contaminated soil is required onsite, the stockpiles shall be:

· Placed on sheeting or similar to prevent contamination of underlying clean material. Shouldcontaminated soil be directly stockpiled on clean material, the surface soils of the underlyingmaterial will be required to be excavated and disposed of as contaminated material;

· Covered with polythene to prevent rainfall induced erosion and dust; and· Fenced or otherwise secured so that the general public cannot access the stockpile.

9



6 Contingency measures

In the event that unforeseen contamination is identified during the works, the first responseprocedures outlined in Section 7.1 shall be followed. In the event of an uncontrolled discharge ofpotentially contaminated soil or water to the environment, the following notification process shallbe used:

· Cease work in the area immediately and take all practical steps to contain the discharge andprevent further discharge;

· Update the site Hazard Board and prevent unnecessary access to the area by personnel;· The Contractor shall notify the Contaminated Land Specialist;· A strategy to remedy the situation is to be determined by the Contaminated Land Specialist.

The agreed strategy shall be implemented by the Contractor;· All details of the discharge (volume, type, location), and procedures taken to remedy the

situation, are to be recorded and included in the validation report to be submitted to allparties on the completion of works; and

· If there is any doubt as to whether or not a discharge of contaminants has occurred, theContractor shall contact the Contaminated Land Specialist for further advice.

· Review and update the controls implemented under this plan, if required, to minimise the riskof further discharge.

6.1 Emergency procedures

The following procedures apply for incidents involving contaminated soil or groundwater:

· Any incident or potential emergency situation shall be reported to the HSO for immediateassessment and action. To minimise the impact of an emergency situation at least one otherfield person besides the HSO shall have immediate access to a first aid kit;

· If an incident occurs within a contaminated area, immediately isolate and immobilise therelevant equipment; and

· The HSO shall notify Willis Bond Capital Partners No. 3 Limited.

6.2 Unforeseen contamination procedures

Given the history of the site, it is possible that previously unidentified contamination could beencountered. Visual and olfactory indications of contamination can include the following:

· Odour (petroleum hydrocarbons or oil);· Discolouration of soil (for example black, blue, grey or green staining); and· Asbestos-containing materials (for example plasterboard, lagging, or cement board).

The following is a “first response” checklist for the Contractor to follow should unexpectedcontamination be encountered during the works.

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Table 7.1: Potential Contaminated Materials First Response Checklist

First Response Checklist

Stop work in the immediate vicinity of the contamination discovery and isolate the area by taping,coning or fencing off. □

Advise the Contractor’s Site Manager. □

Update the site Hazard Board and prevent unnecessary access to the area by personnel. □

If unexpected ACM is observed provide P2 dust masks to all staff entering the isolated area. □

The Site Controller is to contact a Contaminated Land Specialist to inspect, sample and advise onspecific controls if appropriate. □

The Contractor’s Site Manager is to contact the client. □

Contain surface water/sediment and dust as per the SMP. □

6.3 Asbestos containing material

Asbestos has been identified in soils in the vicinity of the site and it is possible that asbestos-containing material (ACM) may be encountered during works. Asbestos controls are provided inAppendix A. They must be applied if further investigations (DSI, refer Section 4.2) show that asbestosis present.

6.4 Water discharges

If a significant oil sheen or sediment is noted in the treated water, or laboratory test results exceedthe limits allowed for discharge (which we anticipate will be developed in discussion with WellingtonWater), then the following actions shall be undertaken:

· Divert discharge (e.g. divert stormwater discharge to tradewaste, or tradewaste to ground, asappropriate). If diversion is impractical, then discharge shall cease;

· The Contractor shall notify the contaminated land specialist who will notify Wellington CityCouncil and Greater Wellington Regional Council;

· A strategy to remedy the situation is to be determined by the Contaminated Land Specialist inconsultation with WCC and GWRC. The agreed strategy shall be implemented by theContractor; this may involve changing this SMP; and

· All details of the discharge (volume, type, location), and procedures taken to remedy thesituation, are to be recorded and included with the Site Validation Report to be submitted toall parties at the completion of works.

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7 Validation and report

7.1 Groundwater discharge reporting

A suitably qualified and experienced individual shall provide the following reports to the Manager,Environmental Regulation, Greater Wellington Regional Council within 7 days of receipt oflaboratory results.

The reports shall include:

· Laboratory transcripts;· The results of the water quality monitoring tabulated against the water quality limits agreed

with GWRC. Exceedances of the criteria shall be highlighted;· Recommendations for any additional water quality treatment to ensure compliance with the

water quality limits; and· Recommendations for further water quality testing to ensure sampled water meets the water

quality limits.

7.2 Validation

Validation is the process of confirming the objectives of the works have been achieved, confirmingworks were undertaken according to agreed procedures and reporting on any incidents.Contaminated soils may remain on the site on completion of the earthworks, however exposurepathways for site users will be incomplete due to the presence of the proposed building andhardstanding across the entire site.

Should contaminated material remain onsite, soil validation sampling and analytical analysis may berequired. If required, validation sampling shall be undertaken by the Contaminated Land Specialist.

7.3 Information required from the contractor

The following information is required from the Contractor for inclusion in the validation report:

· Copies of weigh bridge dockets for the disposal of all contaminated soil;· Excavation records; and· Details of unexpected encounters/events and the actions taken.

The Contractor shall provide the required information within one month of completion of the worksto which the information relates.

7.4 Works observation

Observation visits shall be made on at least three occasions by the Contaminated Land Specialistduring the works to confirm that the works are being undertaken in accordance with this SMP.

7.5 Validation reporting

The Contaminated Land Specialist shall provide a validation report, which includes the following:

· Confirmation that works were completed according to this SMP and documenting anyvariations to the procedures during the works;

· Confirmation that there were no environmental or human health incidents during the works.If there were any incidents then the report shall detail the nature of the incidents and themeasures taken to mitigate effects; and

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· Confirmation of the disposal destination of all soil, based on documentation provided by theContractor.

The validation report shall comply with the MfE’s Contaminated Land Management GuidelinesNo. 1: Reporting on contaminated sites in New Zealand (revised 2011).

7.6 Ongoing monitoring and management

The requirement for ongoing for monitoring or management with respect to ground contaminationwill be assessed on completion of the DSI and on completion of the earthworks.

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8 Applicability

This report has been prepared for the exclusive use of our client Willis Bond Capital Partners No. 3Limited, with respect to the particular brief given to us and it may not be relied upon in othercontexts or for any other purpose, or by any person other than our client, without our prior writtenagreement.

Tonkin & Taylor Ltd

Report prepared by: Authorised for Tonkin & Taylor Ltd by:

.......................................................... ...........................….......…...............

Melody Robyns Stuart Palmer

Contaminated Land Specialist Project Director

Technical review:

· Shane Moore, Principal Environmental Scientist· Chris Hillman, Principal Environmental Engineer

MANR\\ttgroup.local\corporate\wellington\tt projects\86190\issueddocuments\contaminated land\smp v1\180131_site_9_smp_manrv4 .docx

Appendix A: Additional procedures for asbestos-related works

Introduction

Should asbestos be identified in the DSI or during the redevelopment works then appropriate Health& Safety procedures as stated in the New Zealand Guidelines for Assessing and Managing Asbestosin Soils (November 2017) must be implemented. The scope of procedures will depend on the natureand level of asbestos identified (refer Table 6 and Table 7 of the Asbestos in Soils guidelines).

The following procedures are assumed to apply at this stage when asbestos contaminated soils areexposed at the site, and are in addition to those detailed in the SMP for other types of contaminants.

Site Access

Access shall be strictly controlled and limited to essential personnel only. Appropriated fencing andwarning signs shall be erected to provide physical separation between the management areas.

Security and signage

The site hazard board (located by general site entrance) will include details pertaining to theasbestos related works.

General safety requirements

All works involving asbestos will be carried out in accordance with the New Zealand Guidelines forAssessing and Managing Asbestos in Soils, the Health and Safety at Work (Asbestos) Regulations2016 and in accordance with Worksafe NZ guidance. If large quantities of asbestos are identified, alicensed asbestos removalist may be required to be engaged.

The HSO shall determine, and ensure adequate supply of, additional PPE and other safetyrequirements for works in the Asbestos-related works area, which may comprise:

· Respiratory protective equipment (eg P2 or P3 mask);· Disposable gloves;· Disposable (e.g. Tyvek) coveralls (to be changed after each use); and· Disposable boot covers or dedicated footwear (including toe and sole protection) not for

other use until fully decontaminated.Protective equipment shall be replaced as appropriate and in accordance with the manufacturer’srecommendations.

Disposal of soil

Asbestos-containing soils are to be kept wet at all times and the procedures detailed in Section 5.2are to be implemented throughout the excavation of asbestos-containing soils.

All excavated soils containing asbestos shall be disposed to landfill as asbestos waste. Excavatedsurplus material shall, where possible, be placed directly on a lined truck/in lined skip and covered inpolythene, for offsite disposal.

Consulting Structural Engineers

94 Dixon Street, PO Box 27-153, Wellington 6141 Telephone (644) 385-0019, E-Mail: [email protected]

Site 9 – Structural Effects & Construction Methodology Structural Effects Kumutoto Site 9 presents a reasonably significant challenge from a natural hazard perspective with its high shaking hazard, liquefaction/lateral spreading potential and susceptibility to Tsunami/Seiching waves. The site is also relatively low and could be subject to potential, occasional future inundation, particularly as a consequence of prolonged sea-level rise. The structural, geotechnical and architectural design mitigates these issues with a high-performance structure expected to perform well in excess of code minimum requirements. In addition, the development will result in the remediation of existing in-ground contamination. The liquefaction and lateral spreading potential arises through the relatively un-compacted reclamation fill dating from 1900. As part of the development, subterranean contiguous-piled walls or piled frames will be constructed, perpendicular to the direction of potential lateral spread. The ground floor slab and the superstructure will be supported on the walls/frames. In the event of liquefaction/lateral spreading the contiguous-piled walls/frames will brace the structure through the liquefied material while allowing lateral spread to occur beneath the building with little ill-effect. Above the ground-floor the building superstructure will be base-isolated to provide a high level of seismic life-safety protection coupled with damage avoidance, improved business continuity and protection of contents. Base isolation will provide seismic, life-safety performance in excess of Importance Level 3 [IL3]. Above the base isolators the structure will be predominantly steel-framed to provide the strength and resilience at the least weight. The upper floor slabs will be reinforced concrete. Minimal and localised de-watering may occur during construction to enable formation of the lift pit and deeper foundations. The de-watering, if required, will be restricted to small areas. Any effects will be a localised due to the ready re-supply of water from the groundwater and the sea. Accordingly, water-tables beneath neighbouring buildings will not undergo change. Excavation will typically be shallow, with the exception of the piles. Existing foundations that are encountered will be removed only if they obstruct the new works. Excavated material will be tested for contamination and treated/disposed as appropriate. The new building ground floor will be set as high as practicable while still providing access from existing waterfront levels. This means that the ground floor and lift pits may become susceptible to occasional inundation as a result of sea-level rise after approximately 100 years. Future mitigation to prevent flooding of the ground

Site 9 – Structural Effects & Construction Methodology - Page 2

Consulting Structural Engineers

94 Dixon Street, PO Box 27-153, Wellington 6141 Telephone (644) 385-0019, E-Mail: [email protected]

floor will be possible by simply raising the building at the isolator level. Lifting technologies capable of raising the building structure are already in existence. As with other low-lying properties around the Wellington region, ground floor spaces may be inundated during Tsunami or Seiching waves. The first floor level has been set sufficiently high to avoid damage, based on maximum wave height predictions. While significant damage could be expected to the ground floor non-structural elements, the primary structure will have sufficient resilience to resist the wave actions. Construction Methodology The Site 9 foundations will be constructed in reclamation fill, adjacent to the harbour edge but inside the existing Seawall. Construction activities will include excavation, removal of existing foundations (from previous structures on the site), piling, Continuous-Flight-Auger [CFA], minor de-watering and construction of the reinforced concrete slab and beams. The following steps outline, in concept, the construction methodology that will be used.

1. Site establishment, fencing, site sheds etc. 2. Storm-water protection/diversion etc. Temporary filters, kerbs etc. to

prevent construction and excavation materials entering the storm-water system.

3. Additional proof-drilling to determine depths for piles 4. Site-wide excavation to approximately 400mm deep. This is to provide a

bund against any spills or flooding. The excavated material shall be assessed for contamination, treated if required and disposed to landfill/cleanfill as appropriate.

5. Construction of CFA contiguous-piled walls or piled frames perpendicular to the seafront.

6. General excavation to expose the existing, remaining foundations and lower general ground surface levels. The excavated material shall be assessed for contamination, treated as required and disposed to landfill/cleanfill as appropriate.

7. Demolition of existing foundations. Debris will be removed to landfill. 8. Additional excavation, as required, to the underside of the ground floor

foundations. The excavated material shall be assessed for contamination, treated if required and disposed to landfill/cleanfill as appropriate.

9. Construction of a concrete tidy slab across the ground foot footprint. 10. Construction of the structural, reinforced-concrete ground floor slab,

foundations and lift pit. 11. Construction of the ground floor columns and installation of the base-

isolators. 12. Construction of the steel and concrete superstructure, above the isolation

plane. Note that the sequence described above would be a progressive one starting from one end of the site. I.e. Slabs and columns may be in progress at one end of the site while excavation is still underway at the other end. Dunning Thornton Consultants Ltd 180220 - DRAFT

KUMUTOTO -SITE 9 WELLINGTON

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