Newmont Boddington Gold Life of Mine Extension Project

Environmental Management Plan (EMP)

Prepared for

Newmont Boddington Gold Pty Ltd by Strategen

August 2013

Newmont Boddington Gold Life of Mine Extension Project

Environmental Management Plan (EMP)

Strategen is a trading name of Strategen Environmental Consultants Pty Ltd Level 2, 322 Hay Street Subiaco WA ACN: 056 190 419

August 2013

Disclaimer and Limitation

This report has been prepared for the exclusive use of the Client, in accordance with the agreement between the Client and Strategen (“Agreement”).

Strategen accepts no liability or responsibility whatsoever for it in respect of any use of or reliance upon this report by any person who is not a party to the Agreement.

In particular, it should be noted that this report is a qualitative assessment only, based on the scope of services defined by the Client, budgetary and time constraints imposed by the Client, the information supplied by the Client (and its agents), and the method consistent with the preceding.

Strategen has not attempted to verify the accuracy or completeness of the information supplied by the Client.

Copyright and any other Intellectual Property arising from the report and the provision of the services in accordance with the Agreement belongs exclusively to Strategen unless otherwise agreed. This document may not be reproduced or disclosed to any person other than the Client without the express written authority of Strategen unless the document has been released for referral and assessment of proposals.

Client: Newmont Boddington Gold Pty Ltd

Revision Strategen Submitted to Client Report Version Purpose No. author/reviewer Form Date Preliminary Draft Report Rev A For client review, C Ellis, R Chesney, Electronic 17/01/2013 excluding M Brook groundwater and surface water Draft Report Rev B For client review C Ellis, M Brook Electronic 1/02/2013 Draft Report Rev 0 Submission with C Ellis, M Brook Electronic 1/02/2013 PER to EPA Revised Draft Report Rev C For client review C Ellis, M Brook Electronic 22/04/2013 Final Draft Report Rev D For client review C Ellis, M Brook Electronic 21/05/2013 Final Draft Report Rev E For client review A Welker, J Mitchell Electronic 4/06/2013 Final Report Rev F For client review A Welker, J Mitchell Electronic 24/06/2013 Report to EPA Rev 1 Submission with M Brook Electronic 27/06/2013 PER to EPA Report to EPA Rev 2 Submission with M Brook Electronic 07/08/2013 PER to EPA

Newmont Boddington Gold Life of Mine Extension Project

Table of contents

1. Introduction 1 1.1 Background 1 1.1.1 Description of the proposal 1 1.2 Purpose and Scope 1 1.2.1 Potential Impacts Requiring Management 2 1.2.2 Management plans and documents 2 1.3 Environmental setting 2 1.4 Relevant legislation and policy 4 1.4.1 Project specific requirements 5 2. Management framework 8 2.1 Management and document structure 8 2.2 Responsibility and accountability 8 2.3 Communications and training 8 2.3.1 Internal communications 8 2.3.2 External communications 9 2.3.3 Induction and training 10 2.4 Stakeholder consultation 11 2.5 Performance review and continuous improvement 11 2.5.1 Monitoring 11 2.5.2 Reporting 12 3. Groundwater Quality Management Plan 14 3.1 Description 14 3.2 Environmental aspects to be managed 14 3.3 Environmental objectives, targets and performance indicators 14 3.4 Implementation strategy 15 3.4.1 Management actions 15 3.4.2 Monitoring actions 16 3.4.3 Contingency actions 16 4. Adaptive Groundwater Management Plan 18 4.1 Description 18 4.2 Environmental aspects to be managed 18 4.3 Environmental objectives, targets and performance indicators 18 4.4 Implementation strategy 18 4.4.1 Management actions 19 4.4.2 Monitoring program 19 4.4.3 Contingency actions 19 5. Surface Water Management Plan 20 5.1 Description 20 5.2 Environmental aspects to be managed 20 5.3 Environmental objectives, targets and performance indicators 20 5.4 Implementation strategy 21 5.4.1 Probabilistic Water Balance Model 21 5.4.2 Hotham River abstraction 22 5.4.3 Sediment control 22 5.4.4 Process water management 23 5.4.5 Management actions 24 5.4.6 Monitoring actions 25 5.4.7 Contingency actions 26 6. Vegetation and Flora Management Plan 27 6.1 Description 27 6.2 Environmental aspects to be managed 27 6.3 Environmental objectives, targets and performance indicators 27 6.4 Implementation strategy 28 6.4.1 Management actions 28 6.4.2 Monitoring actions 29

BGM 11099_01 R008 Rev 2 7-Aug-13 Newmont Boddington Gold Life of Mine Extension Project

6.4.3 Contingency actions 30 7. Terrestrial Fauna Management Plan 31 7.1 Description 31 7.2 Environmental aspects to be managed 31 7.3 Environmental objectives, targets and performance indicators 31 7.4 Implementation strategy 32 7.4.1 Management actions 32 7.4.2 Monitoring actions 34 7.4.3 Contingency actions 34 8. Black Cockatoo Management Plan 35 8.1 Description 35 8.2 Environmental aspects to be managed 35 8.3 Environmental objectives, targets and performance indicators 35 8.4 Implementation strategy 36 8.4.1 Management actions 36 8.4.2 Monitoring actions 38 8.4.3 Contingency actions 38 9. Indigenous Heritage Management Plan 39 9.1 Description 39 9.2 Environmental aspects to be managed 39 9.3 Environmental objectives, targets and performance indicators 39 9.4 Implementation strategy 40 9.4.1 Management actions 41 9.4.2 Monitoring actions 42 9.4.3 Contingency actions 42 10. Noise Management Plan 43 10.1 Description 43 10.2 Environmental aspects to be managed 43 10.3 Environmental objectives, targets and performance indicators 43 10.4 Implementation strategy 44 10.4.1 Management actions 44 10.4.2 Monitoring actions 44 10.4.3 Contingency actions 45 11. Air Quality Management Plan 46 11.1 Description 46 11.2 Environmental aspects to be managed 46 11.3 Environmental objectives, targets and performance indicators 47 11.4 Implementation strategy 47 11.4.1 Management actions 47 11.4.2 Monitoring actions 48 11.4.3 Contingency actions 48 12. References 50

BGM 11099_01 R008 Rev 2 7-Aug-13 Newmont Boddington Gold Life of Mine Extension Project

List of tables

Table 1 Australian Government and Western Australian government legislation relevant to environmental management 4 Table 2 Historical environmental assessment approvals 5 Table 3 Required reports 12 Table 4 Environmental objectives, targets and performance indicators for groundwater management 15 Table 5 Management actions required to achieve targets for groundwater quality management 15 Table 6 Monitoring actions for groundwater quality management 16 Table 7 Contingency actions for groundwater quality management 17 Table 8 Environmental objectives, targets and performance indicators for groundwater management 18 Table 9 Management actions required to achieve targets for adaptive groundwater management plan 19 Table 10 Monitoring actions for adaptive groundwater management plan 19 Table 11 Environmental objectives, targets and performance indicators for surface water management 21 Table 12 Management actions required to achieve targets for surface water management 24 Table 13 Monitoring actions for surface water 25 Table 14 Contingency actions for surface water management 26 Table 15 Environmental objectives, targets and performance indicators for vegetation and flora management 28 Table 16 Management actions required to achieve targets for flora and vegetation management 28 Table 17 Monitoring actions for flora and vegetation 29 Table 18 Contingency actions for flora and vegetation management 30 Table 19 Environmental objectives, targets and performance indicators for terrestrial fauna management 32 Table 20 Management actions required to achieve targets for terrestrial fauna management 33 Table 21 Monitoring actions for fauna 34 Table 22 Contingency actions for terrestrial fauna management 34 Table 23 Environmental objectives, targets and performance indicators for black cockatoo management 36 Table 24 Management actions required to achieve targets for black cockatoo management 37 Table 25 Monitoring actions for black cockatoo management 38 Table 26 Contingency actions for black cockatoo management 38 Table 27 Environmental objectives, targets and performance indicators for Aboriginal heritage management 40 Table 28 Management actions required to achieve targets for the management of Aboriginal heritage 41 Table 29 Monitoring actions for Aboriginal heritage 42 Table 30 Contingency actions for Aboriginal heritage 42 Table 31 Environmental objectives, targets and performance indicators for the mineral waste management 43 Table 32 Management actions required to achieve targets for noise management 44 Table 33 Monitoring actions for noise 45 Table 34 Contingency actions for noise management 45 Table 35 Environmental objectives, targets and performance indicators for air quality management 47 Table 36 Management actions required to achieve targets for the management of ambient air quality 47 Table 37 Monitoring actions for air quality 48 Table 38 Contingency actions for waste 49

List of figures

Figure 1 Location of Newmont Boddington Goldmine 6 Figure 2 Indicative layout 7

BGM 11099_01 R008 Rev 2 7-Aug-13

Newmont Boddington Gold Life of Mine Extension Project

1. Introduction

1.1 Background

The Proponent, Newmont Boddington Gold Pty Ltd (NBGPL) proposes to extend the life of the existing Newmont Boddington Goldmine (NBG). NBG is located in the Shire of Boddington, approximately 12 km northwest of the town of Boddington and 120 km southeast of Perth, Western Australia. The mine is situated in the Darling Range, within the catchment of Thirty Four Mile Brook (Figure 1).

The gold and copper mining operations at Boddington first commenced operations in 1987, with mining of the shallower oxide material. The operations entered care and maintenance in 2001. Following a feasibility study, mining operations recommenced in 2006, involving the basement ore-mining phase, with an anticipated 15 – 20 year mine life. Commercial production was realised in 2009.

The Life of Mine (LOM) Extension Project (the Proposal) has the potential to extend the mine life until 2041. The Proposal focuses on targeting low-grade hard rock ores lying beneath pits mined during previous operations.

1.1.1 Description of the proposal

The Proposal is to extend the life of the existing mine as lower grade material becomes economically feasible to mine and additional exploration drilling further defines a larger minable resource. The proposal includes expansion of the Waste Rock Dumps (WRDs), a new Residue Disposal Areas (RDA) and minor modifications to the existing RDA, widening and deepening pits, additional stockpiles (for bauxite, topsoil and gravel), new water storage dams and ancillary infrastructure (including roads, powerlines and pipelines) (Figure 2).

To enable development of these elements, the Proposal will require diversion of a 2 km section of Gringer Creek and a 6–8 km diversion of a section of the Bibbulmun track. In total, the Proposal is expected to require clearing of approximately 1755 ha of native vegetation over the next 15–20 years.

1.2 Purpose and Scope

This document is an Environmental Management Plan (EMP) prepared as a supporting document to the Public Environmental Review (PER) for the NBG LOM Extension Project currently under assessment with the State and Australian Governments. As NBG is an approved and operational mine site, mitigation and monitoring environmental management processes are already in place for factors addressed in the PER. This EMP document is a consolidation of relevant existing management and monitoring actions from existing plans and new management commitments that have been made as part of the PER process for the NBG LOM Extension Project.

The purpose of this EMP is to document environmental management objectives and strategies in relation to this Proposal including: • measures to prevent, minimise and mitigate potential environmental impacts of the Proposal • details of the timing and persons responsible for implementation of these measures • monitoring and reporting procedures.

BGM 11099_01 R008 Rev 2 7-Aug-13 1 Newmont Boddington Gold Life of Mine Extension Project

1.2.1 Potential Impacts Requiring Management

The Environmental Scoping Document (ESD) identified the following key factors as needing to be addressed in the PER for the Proposal: • groundwater • surface water • flora and vegetation • fauna.

In addition to the key factors, the ESD identified the following other environmental factors required to be considered in the PER: • public amenity (with particular regard to the Bibbulmun Track) • water use and supply • Indigenous heritage • noise • air quality • closure and rehabilitation.

This EMP has been developed to reflect the management and mitigation measures adopted by NBG for current operations and in order to manage the expansion works associated with the Proposal as they relate to the environmental factors raised by the Environmental Protection Authority (EPA).

1.2.2 Management plans and documents

The EMP includes the following management plans: • Groundwater Quality Management Plan • Adaptive Groundwater Management Plan • Surface Water Management Plan • Vegetation and Flora Management Plan • Terrestrial Fauna Management Plan • Black Cockatoo Management Plan • Indigenous Heritage Management Plan • Noise Management Plan • Air Quality Management Plan.

1.3 Environmental setting

NBG is located in the Peel region in the southwest of Western Australia, within the temperate climate zone of Australia. The region experiences four distinct seasons and is characterised by warm to hot, dry summers, and cool, wet winters. Maximum summer temperatures typically exceed 30°C, while overnight winter temperatures are typically less than 10°C for the Wandering Bureau of Meteorology station (approximately 23 km east).

The majority of rainfall occurs over winter, with on average half the total rainfall received between June and August. Climate data has been collected from the site meteorological station on Communications Hill since 1984. Data shows that the average (1984–2010) annual rainfall for the site is 752 mm, of which 75% (564 mm) occurs in winter.

BGM 11099_01 R008 Rev 2 7-Aug-13 2 Newmont Boddington Gold Life of Mine Extension Project

NBG lies on the Darling Plateau, within the Yilgarn Craton. The NBG gold-copper deposit is located in the Saddleback Greenstone Belt (SGB), a fault-bounded sliver of greenstones about 50 km long and 8 km wide (Coffey 2010). The SGB is divided into three formations—metabasaltic lava of the Marradong Formation; the felsic to intermediate volcanics of the Wells Formation; and the metasedimentary rocks of the Hotham Formation (Coffey 2010). The NBG mineralised system is predominantly confined to the intermediate volcanic of the Wells Formation.

The central part of the Darling Plateau is dissected by several major watercourses and their tributaries, which originate to the east in agricultural land. Drainage is intermittent and the quality of water varies from fresh to saline. Most of NBG is located within the catchment of Thirty Four Mile Brook, a tributary of the Hotham River. The Hotham River flows in a south westerly direction into the Murray River. Thirty Four Mile Brook has previously been diverted for the current mining operation around WRD 8 (Strategen 2005). Thirty Four Mile Brook contributes approximately 0.4% of the water to the Hotham River (Aquaterra 1999).

NBG is located in the Jarrah Forest Biogeographic Region and Northern Jarrah Forrest Subregion as per the Interim Biogeographic Regionalisation for Australia (IBRA) (Environment Australia 2000). The biological setting has been characterised through a range of biological surveys conducted in and around NBG. These surveys have focused on recording species present as well as identifying species and communities of conservation significance.

NBG is located within the Darling Botanical District of the South-western Botanical province and is largely characterised by open forests of Eucalyptus marginata (Jarrah). Other dominant species include Corymbia calophylla (Marri) and Eucalyptus wandoo (Wandoo). The diversity of the area is somewhat greater than western Jarrah forest areas as the flora reflects the interface between eastern sections of the northern Jarrah forest and the Wheatbelt region (Mattiske 2005).

Wide-ranging landform and soil types also play an important role in plant distribution and increased species diversity. Site conditions range from clay-loam valley systems to upland lateritic hills to shallow granitic soil associated with the SGB (Mattiske 2005).

Local flora and vegetation types recorded at the NBG are generally well represented at a regional scale. However, a few species are restricted to the Boddington area and are considered to be of local and regional significance. These species generally occur in plant communities associated with shallow granitic soils (Mattiske 2005).

BGM 11099_01 R008 Rev 2 7-Aug-13 3 Newmont Boddington Gold Life of Mine Extension Project

1.4 Relevant legislation and policy

Table 1 outlines the key State and Australian legislation relevant to the Proposal.

Table 1 Australian Government and Western Australian government legislation relevant to environmental management Legislation Relevance Regulatory authority Australian Government legislation Aboriginal and Torres Strait Preservation and protection of significant Australian Government Islander Heritage Protection Aboriginal areas and objects. Act 1984 Environment Protection and Protection of environmental matters of national Department of Sustainability, Biodiversity Conservation Act significance. Environment, Water, Population 1999 and Communities (DSEWPaC) Native Title Act 1993 Recognition and protection of native title. National Native Title Tribunal Western Australian Government legislation Aboriginal Heritage Act 1972 Protection of sites of Aboriginal heritage Department of Indigenous significance. Affairs (DIA) Agriculture and Related Obligations for control, destruction and notification Department of Agriculture and Resources Protection Act of gazetted noxious plants and animals. Food Western Australia 1976 (DAFWA) Bush Fires Act 1954 Minimising dangers resulting from bush fires, and Fire and Emergency Services the prevention, control and extinguishment of bush (FESA) fires. Conservation and Land Preservation and conservation of flora and fauna. Department of Environment and Management Act 1984 Conservation (DEC) Contaminated Sites Act 2003 Regulation of matters relating to the identification, DEC assessment, recording, management and remediation of contaminated land. Dangerous Goods and Safety Safe storage, handling and transport of dangerous Department of Mines and Act 2004 goods. Petroleum (DMP) Dangerous Goods (Transport) Safe transport of dangerous goods by vehicles. DMP Act 1998 Environmental Protection Act Prevention, control and abatement of pollution. DEC 1986 Conservation, protection and enhancement of environment. Explosives and Dangerous Safe and correct use, classification, marking, DMP Goods Act 1961 storage and carriage of explosives and dangerous goods. Mines Safety and Inspection Controls the inspection and regulation of mines DMP Act 1994 and mining operations. Native Title (State Provisions) Recognition and protection of native title. DIA Act 1999 Rights in Water and Irrigation Protection and licensing of water resources. Department of Water (DoW) Act 1914 and Regulations 2000 Soil and Land Conservation Conservation of soil and land resources and DAFWA Act 1988 (WA) and Clearing mitigation of the effects of erosion. Control Regulations 1991 Waterways Conservation Act Conservation and management of waterways and DEC 1976 their associated environment. Wildlife Conservation Act 1950 Conservation and protection of wildlife (flora and DEC fauna). Special provisions and schedules apply to the protection and management of gazetted rare flora and fauna.

BGM 11099_01 R008 Rev 2 7-Aug-13 4 Newmont Boddington Gold Life of Mine Extension Project

1.4.1 Project specific requirements

This EMP is consistent with previously obtained licences that apply to the current operation, as described in Table 2.

Table 2 Historical environmental assessment approvals

Statement State Approval

Statement 19 (1988) Worsley Alumina Pty Ltd 1988 for the Boddington Gold Mine Enhancement of Facilities

Statement 20 (1988) Alcoa of Australia Ltd in 1988 for the Hedges Gold Project

Statement 49 (1988) Worsley Alumina Pty Ltd in 1988 for Boddington Gold Mine Projects Expansion of Facilities Stage 2

Statement 85 (1989) Worsley Alumina Pty Ltd in 1989 for Boddington Gold Mine, Mining and Processing of Supergene / Basement ores and consolidation and updates of Environmental Commitments

Statement 100 (1990) Section 46 Amendment to conditions

Statement 299 (1993) Worsley Alumina Pty Ltd in 1993 for Boddington Gold Mine, Development of Eastern Anomalies (700)

Statement 379 (1995) Worsley Alumina Pty Ltd for a section 46 Amendment to conditions applying to proposals of conditions set between 1988 to 1993

Statement 450 (1997) Hedges Gold Pty Ltd (1996) Proposal for an increase in approved annual throughput from 2 Mtpa to 4 Mtpa - Section 46 Review

Statement 453 (1997) Worsley Alumina Pty Ltd Boddington Gold Mine, Extended Basement Operation

Statement 489 (1998) Welker Environmental Consultancy (1996) Boddington Gold Mine Proposed Extended Basement Operation (EBO) Consultative Environmental Review and Section 46 Review

Statement 590, 591 Welker Environmental Consultancy (2001) Boddington and Hedges Gold Mines Boddington and 596 (2002) Expansion Shire of Boddington Section 46 Review and Gas-Fired Power Station and Natural Gas Pipeline 12 km Northwest of Boddington Environmental Protection Statement

Statement Australian Government Approval

EPBC 2006/2591 Not a Controlled Action provided activities are managed in a Particular Manner – conditions apply.

EPBC 2011/6192 Controlled Action – assessed by Preliminary Document – conditions apply.

BGM 11099_01 R008 Rev 2 7-Aug-13 5 420000 440000 460000 ! B Mundijong ro o k to n C r a ve H Jarrahdale n i ig n R h ! i w n e al a g D y R Serpentine iv ! e r 6420000

Mundaring State Forest Serpentine Dam y a w Se h rpe g n i t ine H R iv n e Youraling State Forest r r

e Big Brook t

s

e

W

h Jarrahdale t

u

o State Forest

S

Dandalup Dam Timber Reserve N o rt h D an O dal up Rive 'n r eill B o r ok 6400000 A lb a n y H ig h Dwellingup w a State Forest y

So uth D a nd alu Lake p River Banksiadale Timber Reserve Marrinup State Forest Dwellingup ! 6380000 Timber Reserve

er tham Riv Lane Pool Ho Conservation Boddington Reserve !

Dwellingup State Forest Timber Reserve ! Lake Navarino Marradong ! Lake Moyanup Lake Kabbamup

Mooradung 6360000 Nature Reserve

Timber Reserve Dwellingup State Forest er iv Timber Reserve M R Legend urr a y ! Town

Major road Wi lliam s River Drainage lines Timber Development Envelope Harris River Reserve State Forest Potential Development Envelope

6340000 Reservoir Monadnocks Conservation Reserve Reserve

Regional Map

Kununurra Figure 1 Location of Newmont Boddington Goldmine’ !

Port Hedland ! Scale Newman Carnarvon ! 1:400,000 ! 0 2 4 6 8 10 WESTERN Geraldton AUSTRALIA ± at A4 ! Kilometres ! Perth! Kalgoorlie Coordinate System: GDA 1994 MGA Zone 50 Source: Reserves: Geoscience Australia 2012. All other data: Client 2011-2012. ! Note that positional errors may occur in some areas ! [email protected] Date: 20/06/2013 Albany Esperance www.strategen.com.au Author: jcrute Source: ESRI 2012

Path: Q:\GIS\Consult\2011\BGM\BGM11099\ArcMap_Documents\R008\BGM11099_01_R008_RevF_F001.mxd 434000 436000 438000 440000 442000 444000 446000 448000 450000

Legend

6390000 Diversion Channel D5 Pipeline Rehabilitated Area Waste Rock Dumps (WRD) Pit

6388000 Residue Disposal Area (RDA) Approved Footprint Development Envelope Proposed RDA Potential Development Envelope Proposed Dam 6386000 6384000

F3 RDA

F1 RDA 6382000

R4 RDA 6380000

WD#12 WD#9 6378000 North Pit

South Pit 6376000

WD#8 WD#7

6374000 WD#11

WD#10

6372000 D5 Accommodation 6370000

D6 6368000

Figure 2 Indicative layout

Scale 0 1 2 3 4 1:100,000 at A4 km

Coordinate System: GDA 1994 MGA Zone 50 Source: Tenements: DMP10/2012. All other data: Client 2011-2012. Date: 20/06/2013 [email protected] Note that positional errors may occur in some areas www.strategen.com.au Author: jcrute

Path: Q:\GIS\Consult\2011\BGM\BGM11099\ArcMap_Documents\R008\BGM11099_01_R008_RevF_F002.mxd Newmont Boddington Gold Life of Mine Extension Project

2. Management framework

2.1 Management and document structure

NBGPL operates under an ISO14001 (certification 2011) framework through implementation of the Newmont Australia New Zealand Integrated Management System (IMS). ISO14001 is an internationally recognised continuous improvement model, the key elements of which include assessing environmental risk and legal requirements, developing objectives and targets for improvement, training, operational control, communication, emergency response, corrective actions, audits and review. NBG management standards are not only aligned with, but generally exceed the requirements of the ISO 14001.

NBGPL was certified to ISO14001 in 2011. To maintain ISO14001 certification, the NBG site is required to successfully complete regular external independent surveillance audits.

Newmont operations must also comply with the corporate discipline specific standards for environment, social responsibility as well as health, safety and loss prevention.

All key environmental management actions associated with the Proposal are included in this EMP. It has been compiled from existing operational management plans that are currently implemented at NBG operations along with new requirements associated with the Proposal. Any new requirements arising out of the PER process will be incorporated into subsequent versions of the EMP to ensure compliance.

2.2 Responsibility and accountability

Implementation of the EMP management practices and procedures is the responsibility of all site personnel; however, key personnel (Project Manager, Environment Manager, Site Leadership Team, Superintendents and the Site Environmental team members) are responsible for communicating environmental matters and ensuring management practices and procedures are being implemented.

2.3 Communications and training

2.3.1 Internal communications

Internal communication methods currently employed for communicating environmental procedures and updates are outlined in the NBG Internal and External Stakeholder Engagement Procedure. Internal communication methods include the following, as applicable: • site induction process • department toolbox meetings • environmental work area inspections • environmental information alerts and bulletins • incident and accident investigations • weekly site leadership team meetings • monthly executive leadership team meetings • site quarterly newsletter.

The site Environment Department currently operates with an Environmental Officer integrated into the Mining, Processing and Projects Departments. Whilst the Environmental Officer still reports directly to the site Environmental Superintendent, they conduct their day-to-day operations within the relevant operational department, thus improving the communication of environmental requirements on the site.

BGM 11099_01 R008 Rev 2 7-Aug-13 8 Newmont Boddington Gold Life of Mine Extension Project

These mechanisms will be used to address concerns and questions raised by operational personnel, address any incidents or accidents that may have occurred and to communicate any new environmental management procedures or information to personnel.

It is important that management remains informed on environmental performance and issues on site. The NBG IMS Management Review Procedure establishes the processes to ensure management is informed.

Processes for communicating information between levels within the organisation shall be consistent with the APAC Management Operating System (MOS). APAC operations and facilities shall communicate to relevant personnel to ensure awareness and understanding of the following information: • Newmont Mining values and Newmont APAC policies • requirements of the APAC Integrated Management System (IMS) standards and NBGPL discipline specific standards • significant risks • Environmental and Social Responsibility (ESR) legal requirements and other commitments • operational objectives, targets and key performance indicators (KPIs) • ESR roles and responsibilities • emergency information and rapid response system • relevant standard operating procedures (e.g. NBG Internal and External Stakeholder Engagement Standard Operating Procedure) • methods for personnel feedback.

2.3.2 External communications

The NBG Internal and External Stakeholder Engagement Standard Operating Procedure describes the processes NBG uses to: • manage community relations risks and opportunities • ensure engagement processes are documented monitored and measured for effectiveness • communicate with internal and external stakeholders.

External communications may include the following: • meetings (both scheduled and unplanned) and correspondence with appropriate regulatory authorities and stakeholders, including local community members and non-government organisations (NGOs) • discussions and consultation with adjoining landowners and Native Title claimant groups • handling, and responding to, complaints, requests and queries from the public.

The Stakeholder Mapping and Engagement tool is a dynamic document that will be updated on an annual basis.

BGM 11099_01 R008 Rev 2 7-Aug-13 9 Newmont Boddington Gold Life of Mine Extension Project

2.3.3 Induction and training

In accordance with the APAC IMS, all mine sites shall establish a formal training program which shall incorporate the following: • inductions and where required workplace-specific orientations for all employees, contractors, and visitors • area or workplace-specific orientations and inductions • competency and/or skilled development training • training needs analysis defining various training modules by occupation • technical hazard specific training • environmental awareness and general site requirements and responsibilities • cross cultural and other awareness training in line with company commitments.

Employees shall receive suitable environmental training to ensure they are aware of their responsibilities and are competent to carry out their work in an environmentally acceptable manner. Topics covered by the site environmental induction include: • Newmont environmental values and philosophies • employees’ legal environmental responsibilities • fauna management including priority fauna with specific info regarding black cockatoos • forest management including clearing management, weed and forest disease management and state forest access • water management • waste management • hydrocarbons and chemicals (including spill management) • greenhouse gas and energy efficiency management • dust management • accident and incident reporting requirements

Environmental requirements shall be explained to all on-site personnel during the site induction. On-going training shall be provided as required for the various departments. Completion of site inductions shall be recorded.

Personnel required to perform tasks that may cause impacts to the environment must be certified as having completed required induction and training processes, and/or as having gained appropriate experience before undertaking such tasks.

During the induction program each participant is supplied with a copy of the induction booklet which provides additional information on the covered topics.

At a minimum all employees are made aware of the following in regards to ESR: • NBGPL values and APAC policies • the risks and hazards associated with their work activities • their roles and responsibilities in conforming with site requirements • technical training, in accordance with relevant requirements of the NBGPL Discipline Specific Standards and results of risk assessments • competency training appropriate to task performance and potential impacts of tasks performed • relevant emergency preparedness and response requirements • refresher training specific to meet required skills and maintain competency levels • training to provide managers and supervisors with knowledge and skills to perform their duties.

BGM 11099_01 R008 Rev 2 7-Aug-13 10 Newmont Boddington Gold Life of Mine Extension Project

2.4 Stakeholder consultation

The key stakeholders identified and consulted in relation to the proposal include:

Government agencies • Office of the Environmental Protection Authority (OEPA) • DEC • Department of State Development (DSD) • DMP • DoW • DIA • DSEWPaC • Department of Resources, Energy and Tourism (DRET). • Department of Premier and Cabinet • Shire of Boddington • Shire of Murray.

Community groups • Dwellingup community • Boddington community • Boddington Local Emergency Management Committee • Boddington Gold Mine Environment Management Liaison Group • Bibbulmun Track Foundation • Gnarla Kaala Booja Working Party • South West Aboriginal Land and Sea Council (SWALSC).

Other organisations • Boddington Supertowns Implementation Committee • Peel Regional Development Australia.

2.5 Performance review and continuous improvement

2.5.1 Monitoring

Environmental monitoring processes are designed to ensure that management actions taken are consistent with the desired environmental outcomes. Each environmental factor requires specific monitoring programs, which are detailed in individual management plans within this EMP (Sections 3 to 11). The implementation of this EMP will be monitored through the auditing schedule (Section 2.5.2).

NBG has developed monitoring schedules which detail frequency and location of sampling, dependent on the level of risk and legal obligations. Schedules are periodically reviewed and updated as required.

Monitoring and measuring equipment must be regularly maintained, serviced and calibrated, according to the manufacturer’s instructions and/or recognised international/national standards. Personnel conducting the equipment calibration shall be trained and competent and records of these activities maintained.

Monitoring and measurement data is retained in accordance with the data management system.

BGM 11099_01 R008 Rev 2 7-Aug-13 11 Newmont Boddington Gold Life of Mine Extension Project

2.5.2 Reporting

Performance reporting

To ensure that the measures put in place to meet desired outcomes and the measured results are in accordance with relevant legislation and licensing, NBGPL is required to prepare various comprehensive reports (Table 3).

Table 3 Required reports

Reporting Report title Submitted to Required by frequency

DMP, DEC, EPA, DSD Draft issued March annually Annual Environmental Report Annual and DoW Final issued June annually Annual Hydrological Report DMP, DEC, EPA, DSD Draft issued March annually Annual (submitted as part of AER) and DoW Final issued June annually Harvesting and Clearing Plan DMP, DEC, EPA, DSD Draft issued March annually Annual (submitted as part of AER) and DoW Final issued June annually Audit Compliance Report DMP, DEC, EPA, DSD Draft issued March annually Annual (submitted as part of AER) and DoW Final issued June annually Draft issued March annually Blast Report Annual DEC Final issued June annually Closure Plan Tri-annual DMP As per tenement conditions National Pollutant Inventory Annual DSEWPaC August Annually Annual (as Department of Climate National Greenhouse and Energy part of APAC Change and Energy October Annually Reporting submission) Efficiency NBG Interim Permit Compliance Annual DSEWPaC Final issued January annually Report

Incident reporting

The NBG Accident and Incident Reporting Procedure details the processes and responsibilities for internal and external reporting and investigations into accidents and incidents. This procedure also ensures accurate and timely reporting and investigation of accidents/incidents to determine underlying causes in order to eliminate the potential of future failures and to apply adequate controls across the site.

Auditing

NBG has developed and implemented an internal audit program in accordance with ISO14001 requirements.

To assist in the preparation of reports, NBGPL will undertake audits of the implementation of environmental management commitments as follows: • periodic review of environmental performance and compliance • audits of key contractors’ environmental management (as per audit schedule) • regular assessments of environmental legal compliance.

Persons responsible for environmental auditing shall be suitably qualified, having completed internal audit training. Audit findings shall be summarised and communicated to management. Major findings shall be considered when developing objectives and targets, budget planning, continuous improvement programs and discussed during management reviews.

NBG undergoes third party audits in order to demonstrate continued compliance with and certification to ISO14001and the International Cyanide Management Code (ICMC).

BGM 11099_01 R008 Rev 2 7-Aug-13 12 Newmont Boddington Gold Life of Mine Extension Project

Review and revision

Site management plans and operational procedures are reviewed according to the document review schedule and updated based on amendments to the operation, monitoring, audits, continuous improvement and changes in regulatory and corporate requirements. . The EMP identifies existing management and monitoring components of the environmental activities associated with NBG that will continue as part of the LOM Extension Project but also identifies new commitments that have been made specifically in regards to this Proposal. If the plan is required to be amended, and amendments are required to be approved under the Ministerial Statement conditions, no significant amendment can be implemented until this approval has been granted. Significant amendments are those which alter the obligations of the proponent, and do not include minor or administrative changes.

BGM 11099_01 R008 Rev 2 7-Aug-13 13 Newmont Boddington Gold Life of Mine Extension Project

3. Groundwater Quality Management Plan

3.1 Description

Groundwater in the vicinity of NBG is contained within two main systems; a seasonal shallow groundwater system (superficial aquifer) and a deeper weathered and fractured bedrock groundwater system (bedrock aquifers) (Schlumberger 2010).

The superficial aquifer is located within the lateritic horizon and is perched above the underlying clays. This aquifer is highly responsive to rainfall infiltration and groundwater elevations tend to change rapidly with no consistent regional trends or responses to mining operations. The main discharge is to alluvial sediments along creek channels, with groundwater flow generally following surface topology and contributing to winter base flow of creeks and streams. Some vertical discharge is likely to occur through higher permeability zones in the form of relict dykes. These zones act as vertical conduits allowing some water to leak down to the bedrock aquifers (Aquaterra 1999).

The main regional aquifer is present in the lower weathered clay and rock (saprolite), which overlies less weathered bedrock horizons. These layers are referred to collectively as the bedrock aquifers. Permeability of these aquifers is associated with geological structures in the rock, such as shearing, veining and faulting. Although the aquifers appear to have significant storage capacity, its fractured rock nature means that horizontal movement of water through the aquifer is generally slow. Groundwater flow is predominantly to the south, following the overall strike of the regional geological structure (Aquaterra 1999).

Mining currently occurs in the bedrock aquifer.

3.2 Environmental aspects to be managed

Potential impacts to groundwater from activities or aspects of the proposal, not considering mitigation measures, include: • contamination of groundwater as a result of seepage or runoff from WRDs and RDAs, including potential impacts to drinking water supplies • contamination of groundwater from the storage and use of chemicals such as hydrocarbons and process chemicals (e.g. cyanide).

Management of impacts on groundwater and groundwater-dependent ecosystems from dewatering activities is addressed in the Adpative Groundwater Management Plan (Section 4).

3.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on groundwater management objectives of the proposal (Table 4).

BGM 11099_01 R008 Rev 2 7-Aug-13 14 Newmont Boddington Gold Life of Mine Extension Project

Table 4 Environmental objectives, targets and performance indicators for groundwater management Management Target Performance indicators objective Protect groundwater Adequate storage and handling processes for Results of groundwater quality quality environmentally hazardous chemicals to prevent monitoring wherever possible, materials entering the Groundwater quality monitoring environment results Ensure seepage through the WRD is captured in the Impacted Water Sump and Drainage Blanket Incident reporting Groundwater quality around the mine complies with Licence L8306/2008/1 Cyanide Code Audit (public Maintain certification to the International Cyanide document) Management Code* *Cyanide Code: a voluntary industry program to improve the management of cyanide used in gold mining and assist in the protection of human health and the reduction of environmental impacts.

3.4 Implementation strategy

3.4.1 Management actions

Specific actions have been identified to assist in achieving groundwater quality management objectives (Table 5). The monitoring program for groundwater (Table 6) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 5 Management actions required to achieve targets for groundwater quality management

Existing process Parameter Action Timing or new commitment Personnel Provide information on groundwater management requirements Prior to Existing process awareness to all employees and contractors through the site induction personnel process, including: commencing • potential for fuel and chemical spillages to contaminate work on-site groundwater • consequences of groundwater contamination. Water Maintain certification with the International Cyanide At all times Existing process storage Management Code Seepage Ensure WRD expansion areas are equipped with perimeter Prior to New drainage and ensure that any seepage would report to the operation of new commitment Impacted Water Drainage Blanket for collection and use through WRDs and RDA the processing plant. Design, construct and operate new RDA with seepage mitigation measures and solution recovery systems. Install a drainage blanket on lower parts of the WRDs where Prior to New potentially acid forming rock may be dumped and where operation of new commitment drainage would no longer report to the existing impacted Water WRDs Sump. Drainage blanket to be constructed of hard non-acid forming rock with a high void ratio and designed to direct seepage towards perimeter drains. Design and construct new RDA to include the following: Prior to New • a liner below the supernatant pond operation of new commitment RDA • solution recovery systems.

BGM 11099_01 R008 Rev 2 7-Aug-13 15 Newmont Boddington Gold Life of Mine Extension Project

Existing process Parameter Action Timing or new commitment Hazardous Store all hazardous materials in areas where there is no At all times Existing process materials potential for runoff to reach the environment. storage Design/construct hazardous material storage to protect from At all times Existing process stormwater ingress. Large quantities of chemicals and hydrocarbons will be stored to At all times Existing process meet the requirements of AS 1940. All minor storage (<500 L) shall be secondarily contained in At all times Existing process bunded areas or chemical storage cabinets. Spills Train all relevant personnel in appropriate handling and spill Prior to Existing process clean-up requirements. personnel commencing relevant work Contain and clean up any spillages or leakages immediately in Immediately Existing process accordance with licence conditions. following a spill

3.4.2 Monitoring actions

Monitoring actions for groundwater are listed in Table 6.

Table 6 Monitoring actions for groundwater quality management Existing process Topic Parameter Frequency Location Purpose or new commitment Groundwater Water quality As per site Groundwater Ensure groundwater Existing process bores and Groundwater level monitoring bores and has not been piezometers schedule piezometers contaminated by mining activities and monitor groundwater levels Process water WAD-CN Continuous Residue Ensure levels of Existing process quality Supplemented pipeline, WAD-CN within by laboratory booster acceptable checks station, return parameters water line, F1 decant pond Contamination Piezometric water Continuous and F1/F3 Ensure embankment Existing process level monthly dips embankment wall integrity (early and in-situ warning detection liner for wall failure or piezometers leakage) Hazardous Visual Inspections Daily by Work areas Ensure compliance Existing process material personnel / Hazardous with required control storage and contractors materials measures. work area Monthly by storage areas cleanliness Environment personnel

3.4.3 Contingency actions

Contingency actions have been developed for implementation if monitoring indicates that the environmental objectives and targets for groundwater quality management for the proposal are not being achieved (Table 7).

BGM 11099_01 R008 Rev 2 7-Aug-13 16 Newmont Boddington Gold Life of Mine Extension Project

Table 7 Contingency actions for groundwater quality management Trigger Action Unacceptable levels of cyanide or 1. Notify DoW and DEC. metals detected in groundwater 2. Investigate cause. 3. If determined to be attributable to residue disposal operations, prepare and implement a containment and recovery plan. 4. Revise management measures to ensure future contamination does not occur. 5. Revise and continue monitoring to determine success of corrective actions. Spill or leak of environmentally 1. Identify type and characteristics of hazardous material (hydrocarbon, hazardous chemical chemical etc). Comply with safety and environmental recommendations within the relevant Materials Safety Data Sheet (MSDS). 1. Identify potential sources of spill. 2. Respond to remaining spills using the following response priorities: a. Control – find the source of the discharge and prevent further discharges. b. Contain – Use spill kits and other response capabilities to contain the spill and prevent further spread. Priority should be given to preventing spill from entering sensitive areas such as surface waters or the marine environment. c. Clean up - Use spill kits and other response capabilities to remove the spilt material from the affected area and clean up the site. Priority should be given to sensitive areas such as surface waters or the marine environment. 3. Inspect onsite containment measures. 4. Repair, redesign or replace onsite containment facilities if required. 5. Perform visual inspection to confirm success of contingency measures. 6. Review and revise procedures as appropriate. 7. Advise all staff of procedure revision and requirements. 8. Report spill through the internal management system (Cintellate). Any spills involving cyanide will also be reported through a separate Cyanide Incident Notification (CIN) report to Corporate within 24 hours of spill. 9. Report to the DEC as required

BGM 11099_01 R008 Rev 2 7-Aug-13 17 Newmont Boddington Gold Life of Mine Extension Project

4. Adaptive Groundwater Management Plan

4.1 Description

The hydrology of the NBG area is described in Section 3.1.

4.2 Environmental aspects to be managed

Potential impacts to groundwater from activities or aspects of the proposal, not considering mitigation measures, include: • changes to groundwater levels (drawdown) in the shallow and bedrock aquifers due the dewatering, resulting in a reduction in groundwater availability • impacts to groundwater-dependent ecosystems as a result of groundwater drawdown and groundwater abstraction

4.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on groundwater management objectives of the proposal (Table 8).

Table 8 Environmental objectives, targets and performance indicators for groundwater management Management objective Target Performance indicators Improve understanding of the Investigation into the relationship Regional groundwater model relationship between the Hotham between the Hotham River and River and bedrock aquifer system bedrock aquifer system Review of groundwater model veracity and recalibration of the regional groundwater model as required Protect groundwater-dependent Ensure the impact of groundwater Results of groundwater and ecosystems from impacts from mine extraction on groundwater dependent vegetation monitoring in potential dewatering activities ecosystems in the vicinity of the impact areas mining operations is minimised. Ensure summer flows in the Hotham No decline in summer flows in the Flow gauging at Marradong Bridge River are not affected by mine Hotham River as a result of mine dewatering activities dewatering

4.4 Implementation strategy

The aims of the Adaptive Groundwater Management Plan are to: • monitor drawdown in the bedrock aquifers • monitor any changes to superficial groundwater, groundwater-dependent ecosystems and flows in the Hotham River • determine if any changes are due to drawdown in the bedrock aquifers • mitigate and manage any changes that are considered likely to be due to drawdown.

BGM 11099_01 R008 Rev 2 7-Aug-13 18 Newmont Boddington Gold Life of Mine Extension Project

4.4.1 Management actions

Specific actions have been identified to assist in achieving groundwater management objectives (Table 9). The monitoring program for groundwater (Section 4.4.2) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 9 Management actions required to achieve targets for adaptive groundwater management plan Existing process or Parameter Action Timing new commitment Baseline Undertake an initial groundwater investigation to assess the At start of New commitment data degree of interaction between the Hotham River and upper monitoring bedrock aquifer in the potential drawdown area. program Conduct baseline assessment of riparian vegetation along the Hotham River where there may be an impact from dewatering activities. Review Conduct external expert review of groundwater data to assess for Annually New commitment new trends and changes. This review will involve a re-calibration of the regional groundwater model if the model is considered not to be adequately predicting drawdown. Monitoring Install monitoring infrastructure and conduct groundwater, surface As per the New commitment water and riparian vegetation monitoring as per the monitoring program program (Section 4.4.2). Assessment Assess monitoring results against criteria As per the New commitment program

4.4.2 Monitoring program

Monitoring actions for groundwater are listed in Table 10.

Table 10 Monitoring actions for adaptive groundwater management plan Existing process or Topic Parameter Frequency Location Purpose new commitment Regional Water quality As per site Groundwater Regional response New commitment Groundwater Groundwater level monitoring bores and to dewatering bores and schedule piezometers activities piezometers Hotham Species As per schedule Hotham River Assess if New commitment River composition established riparian zone dewatering Riparian Vegetation health following within potential impacting riparian Vegetation baseline zone of vegetation along assessment dewatering Hotham River impact Hotham Flow rates Fortnightly Marradong Monitor baseline Existing Process River Bridge flows during drier surface Gauging months water flows Station

4.4.3 Contingency actions

If studies indicate that there is a relationship between the Hotham River and the basement aquifer and that the expansion of the groundwater drawdown is likely to result in an impact to the ecological and heritage values of this system, contingency actions will be implemented following negotiation and agreement with members of the EMLG.

BGM 11099_01 R008 Rev 2 7-Aug-13 19 Newmont Boddington Gold Life of Mine Extension Project

5. Surface Water Management Plan

5.1 Description

The central part of the Darling Plateau is dissected by several major watercourses and their tributaries, which originate to the east in agricultural land. Drainage is intermittent and the quality of water varies from fresh to saline. Most of NBG is located within the catchment of Thirty Four Mile Brook, a tributary of the Hotham River.

The Hotham River flows in a southwesterly direction into the Murray River. Thirty Four Mile Brook has previously been diverted for the current mining operation around the No 8 Waste Dump (Strategen 2005). Thirty Four Mile Brook contributes approximately 0.4% of the water to the Hotham River (Aquaterra 1999). The adjacent House Brook, Junglen Gully and Gringer Creek also flow into the Hotham River. The new RDA is located in the Gringer Creek catchment.

Four seasonally inundated areas are located near the mine, being Eight Swamp, Round Swamp, Pillow Swamp and Boomerang Swamp (Coffey 2010). The three latter swamps have been identified by the Minister for the Environment as locally significant and are monitored by NBG (Coffey 2010).

The mine is operated as a closed system from a surface water management perspective. Surface waters from the mine, RDAs and WRDs are used as processing water, rather than being released to local waterways.

5.2 Environmental aspects to be managed

Activities or aspects of the proposal that have the potential to affect surface water, not considering mitigation measures, include: • potential contamination of surface water as a result of seepage or overflow from WRDs and RDAs, including potential impacts to drinking water supplies • impacts to surface water flows as a result of placement and design of new infrastructure, including alterations of existing drainage patterns of Gringer Creek and tributaries of the Hotham River.

In addition to potential impacts from the proposal, ongoing management of the following potential impacts from the approved project have been addressed: • impacts to surface water flows in the Hotham River as a result of extraction for water supply.

The management of issues relating to groundwater extraction and dewatering that may affect summer flows in the Hotham River are addressed in the Adaptive Groundwater Management Plan (Section 4).

5.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on surface water management objectives of the proposal (Table 11).

BGM 11099_01 R008 Rev 2 7-Aug-13 20 Newmont Boddington Gold Life of Mine Extension Project

Table 11 Environmental objectives, targets and performance indicators for surface water management Management objective Target Performance indicators Minimise water Continue to enhance efficiency and water Site water balance and annual reporting. abstraction from the balance programs to maximise best use of Hotham River the resource. Ensure compliance with DoW licence conditions. Protect surface water No water quality impact to surrounding Results of surface water monitoring against quality surface waters as a result of mining and relevant ANZECC requirements, licence processing activities targets and Ministerial conditions No unplanned releases of water to Thirty Results of other opportunistic reporting such Four Mile Brook from final storage structures as Environmental Incident Reports (e.g. D4 and/or D5 dam) in events less than a 1 in 100-year Average Return Interval storm event Process water WAD-CN levels to ensure compliance with relevant licensing and approval limits.No overflows from new RDA into Gringer Creek Comply with legislative Water abstraction to occur only from Site processes in place for reconciliation of requirements for water licensed sources in compliance with licence results from monitoring water abstracted abstraction conditions and limits against licence conditions and limits

5.4 Implementation strategy

5.4.1 Probabilistic Water Balance Model

The primary management tool for the management of site water is the site probabilistic water balance model (PWBM) managed by the site Processing Department. The PWBM models the principal water movements around site and also captures minor losses such as seepage, dust suppression and village water use. The PWBM is updated monthly and forecasts: • water demand from the process plant and other water uses • reliability of water supply to the process plant • likely water supply volumes including dewatering from open pits, runoff harvesting and extraction from the Hotham River • change of water volumes and levels in water storage facilities and seasonal variation.

Various operating rules have been in-built for management of the various water holding bodies on site including: 1. Maximum Level: the level at which the water storage facility is considered to be at full capacity. This level is designed to include at a minimum, capacity for a 1 in25-year Average Recurrence Interval storm event of 24 hours duration in addition to a freeboard allowance. Where the facility is the last storage before discharge to the lower sections of Thirty Four Mile Brook, or Gringer Creek, the facility shall be designed with capacity for a 1 in100-year Average Recurrence Interval storm event of 24 hours duration. 2. Operating Level: the level which will be maintained in the water storage facilities during normal operations. Operating levels in some storage facilities may vary on a monthly basis to allow for rainfall runoff that might accumulate during the wet season. 3. Uptake Level: the minimum level at which water can be pumped from the water storage facility. Water below the uptake level is not accessible for use. Where possible this water level is avoided.

BGM 11099_01 R008 Rev 2 7-Aug-13 21 Newmont Boddington Gold Life of Mine Extension Project

In order to minimise extraction from the Hotham River, as well to minimise the amount of process and impacted water on site at any one time, water usage priority is as follows: 1. Process water. 2. Impacted water. 3. Raw water.

General requirements of the water management system include: 1. Avoid overtopping water storage facilities. 2. Avoid water levels reducing to below uptake levels. 3. Where waters are of the same type, water will be preferentially sourced from facilities above the maximum level, then from facilities over the operating level. 4. If the PWBM predicts a supply shortfall, water will be pumped from Hotham River and stored in the raw water storage facilities. 5. If the PWBM indicates a potential shortage of water, the minimum water level on the R4 RDA will be maintained. Water will also be pumped to R4 RDA during periods of excess water to provide additional storage. 6. Process water is not to be transferred to the R4 RDA (except under emergency situations).

NBG recognises the need for efficient water use. The following water management strategies have been implemented to minimise water usage: 1. Thickening of residue before deposition on the RDA. Deposition of thickened tailings results in reduced water losses through entrainment and evaporation. 2. Preferable storage of water in D1 and D4 water storage reservoirs (WSR) whilst operating the F1/F3 and R4 RDAs at the minimal operating levels. This reduces the surface area to volume ration of water storage, minimising evaporation losses.

5.4.2 Hotham River abstraction

Hotham River abstraction is required to supplement water supplies. Water is pumped under the following conditions: • Hotham River flow exceeds 342 kL/hour at the Marradong Road (Camballing) Bridge • pump rate is limited to a maximum 3300 kL/hour • total volume extracted is limited to 10 GL/year.

Failure to comply with any of these conditions is a breach of legal requirements and reportable to government. It is preferable after a first flush of runoff has gone through the system at the start of the rainfall season (generally July) when Hotham River water is higher quality and has higher flow rates.

5.4.3 Sediment control

The NBG is a closed environment, meaning that there is no discharge of water from the site to the surrounding environment under normal operating conditions (i.e. water is only discharged from site in emergency situations, following advice to DoW and OEPA). All cleared areas will have adequate bunding in place around their perimeter to prevent the runoff of sediment laden water. Cleared areas will drain to a collection sump and these are sized based on the catchment of the area as well as the potential risk to the environment.

BGM 11099_01 R008 Rev 2 7-Aug-13 22 Newmont Boddington Gold Life of Mine Extension Project

Following rainfall events, sumps are checked based on their priority level: 1. Priority One – sumps that drain externally to forest or brooks and have cleared catchments greater than 6 ha or 2 ha of stockpiles). These sumps are inspected when daily rainfall exceeds 25 mm or when monthly rainfall exceeds 80 mm. 2. Priority Two – other sumps that drain externally to forest. These sumps are inspected when monthly rainfall exceeds 120 mm. 3. Priority Three – sumps that drain internally to the mining or residue areas. These sumps are only monitored as part of routine checks and inspections.

All site perimeter drains are equipped with sediment control structures to limit the amount of sedimentation in the movement of water around the site.

5.4.4 Process water management

Sodium cyanide is used in the leaching circuit of the processing plant during the extraction of gold from the ore. The residue waste stream produced from this process contains residual amounts of cyanide. From the processing plant, residue is pumped approximately 4 km to the Booster Station at the F1/F3 RDA where it is distributed for disposal into the RDA. At the Booster Station, Caro’s acid is added to the residue to reduce Weak Acid Dissociable cyanide (WAD CN) levels to <50 ppm at the discharge spigots. Natural degradation from sunlight and atmosphere reduces the concentration to <30 ppm in the RDA. The supernatant pond on the RDA is maintained at <30 ppm WAD CN. Seepage at the RDA is controlled by: 1. Gravel drainage layer in naturally clay lined area. 2. Composite (300 mm clay and 1.5 mm HDPE) liner. 3. Leak Collection & Recovery System (LCRS) that sits under the composite liner. This drains to a sump which is then pumped to the surface of the RDA and recycled. 4. Underdrainage Collection System which sits on top of the liner and reduces hydrostatic pressure. These finger-drains direct seepage to a sump which is pumped to the surface of the RDA and recycled. 5. Toe-drains located upstream of each of the Saddledams that direct liquid to precast concrete liners which are fitted with a pump.

Return water from the RDA is also treated with Caro’s acid to reduce WAD CN levels to <0.5 ppm in the process water distribution. This water is gravity fed to the process water pond at the plant-site via a high- density polyethylene (HDPE) pipeline. The first use of process water in the circuit is at the fine screens prior to material entry into the four ball mills.

All process water used on site is required to have secondary containment to reduce the possibility of losses from the system to the local environment.

NBGPL is certified to the International Cyanide Management Code and is audited on a 3-yearly basis to demonstrate on-going compliance to the ICMC and continuous improvement in management of cyanide.

BGM 11099_01 R008 Rev 2 7-Aug-13 23 Newmont Boddington Gold Life of Mine Extension Project

5.4.5 Management actions

Specific actions have been identified to assist in achieving surface water management objectives (Table 12). The monitoring program for surface water (Table 13) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 12 Management actions required to achieve targets for surface water management Existing process Parameter Action Timing or new commitment Process water Manage process water quality through Caro’s Acid Cyanide Continuous Existing process quality Destruction circuit. Sediment Conduct inspections of sediment control structures to Post-rainfall Existing process control prevent silt laden water entering the environment as per site events monitoring plan. Remove sediment from sediment pumps. As required Existing process based on inspections Surface water Collect all runoff from WRDs, RDAs, soil/gravel stockpiles During Existing process quality and bauxite stockpiles in storage ponds and reuse as operations process water. Segregate clean and potentially contaminated runoff (runoff At all times Existing process from WRDs). Treat runoff and seepage from WRDs if required. As required Existing process Continue to manage the staged construction of the F1/F3 During Existing process RDA to prevent migration of diffuse seepage into the South operations Dandalup catchment. Storage Manage storage capacities in water holding facilities in At all times Existing process capacity accordance with the following: • each facility to be designed with a capacity for a 1 in25- year Average Recurrence Interval storm event of 24 hours duration in addition to a freeboard allowance • where the facility is the last storage before discharge to the lower sections of Thirty Four Mile Brook or Gringer Creek, the facility shall be designed with capacity for a 1 in100-year Average Recurrence Interval storm event of 24 hours duration. Discharge Discharge of water from the mine site to Thirty Four Mile During Existing process Brook to only occur in rainfall events greater than 1 in 100 operations year average return interval, 24 hour event. Abstraction Undertake abstraction of water from the Hotham River in During Existing process accordance with DoW licence conditions and as described in operations Section 5.4.2. Creek diversion Submit detailed design of Gringer Creek diversion to DoW 12 months New commitment and DEC prior to construction

BGM 11099_01 R008 Rev 2 7-Aug-13 24 Newmont Boddington Gold Life of Mine Extension Project

5.4.6 Monitoring actions

Monitoring actions for surface water are listed in Table 13.

Table 13 Monitoring actions for surface water Existing process Topic Parameter Frequency Location Purpose or new commitment Sediment Water All sumps annually. Sediment Inspection of sump Existing process control volume Priority 1: Following a pumps condition Sediment daily rainfall event Advise if sump needs to load >25mm or where be cleaned of sediment monthly rainfall load >80mm Priority 2: where Monthly rainfall >120mm Priority 3: Routine checks and inspections Refer to Section 5.4.3 Process water WAD-CN Continuous Residue Ensure levels of WAD- Existing process quality Supplemented by pipeline, CN within acceptable laboratory checks booster parameters station, return water line, F1 decant pond Storage Freeboard Daily F1/F3 and Ensure sufficient Existing process capacity R4 facilities freeboard being maintained in facilities Contamination Piezometric Continuous and F1/F3 Ensure embankment Existing process water level monthly dips embankment wall integrity (early and in-situ warning detection for liner wall failure or leakage) piezometers Watercourse pH, As per monitoring Junglen Ensure surface water Existing process water quality electrical schedule Gully, quality maintained in conductivity, Gringer water courses adjacent total Creek, Thirty to mine site. dissolved Four Mile salts, total Brook, suspended Hotham solids, WAD River, South cyanide, Dandalup arsenic, River cadmium, copper, nickel and zinc Water Volume Daily when pumping Hotham Ensure operation within Existing process abstraction abstracted River Pump licence conditions Pumping Station rates

BGM 11099_01 R008 Rev 2 7-Aug-13 25 Newmont Boddington Gold Life of Mine Extension Project

5.4.7 Contingency actions

Contingency actions have been developed to be enacted if monitoring indicates that the environmental objectives and targets for surface water management are not being achieved (Table 14).

Water management structures on site have been designed to limit discharge to the environment; however, during extreme rainfall events (greater than 1 in 100 Average Return Interval storm event), discharge to the environment may occur.

Table 14 Contingency actions for surface water management Trigger Action Extreme rainfall event in excess of the 1. Overflow of sediment control structures at the base of WRDs will design storm event resulting in overflow overflow into the impacted water sump (IWS) and the D5 WSR. of sediment control structures 2. NCWP and SCWP will overflow into the Wandoo North and Wandoo South pits respectively. 3. If the D5 dam overflows, this will overflow into the lower 34 Mile Brook. 4. The D1 WSR will overflow into the upper 34 Mile Brook and be captured in North Wandoo Pit. 5. Repair drainage structures when safe to do so. Extreme rainfall event in excess of the 1. Where possible take preventative actions, for example, storing water on design storm event results in overflow to F1 and R4 RDAs to provide additional storage to pump water from D5 the Thirty Four Mile Brook WSR to SCWP to D1 WSR. 2. If preventative actions are not possible, e.g. if there is already excessive water on site, water samples will be taken to assess the quality of water to be discharged and in Thirty Four Mile Brook at the premises boundary (boundary with agricultural land) in consultation with the DoW. 3. If a limited discharge event does occur, NBG will measure the volume of water released to the environment and obtain water samples during and after the release to assess the water quality of discharged water and report to DoW. 4. NBG will inform the authorities of the event, together with information about the quality and quantity of the release. 5. If the water quality of the discharged water does not meet the quality criteria for discharge, NBG will undertake a study to assess the potential downstream impacts on aquatic ecosystems and third party users. Surface water quality in breach of 1. Investigate the cause of the contamination. licence conditions 2. Remediate where possible. 3. Implement intensive monitoring program. 4. Report to government agencies. Leak in residue pipeline detected 1. Shutdown pipeline. 2. Remove spilt residue within 72 hrs. 3. Repair pipe. Leak in RDA/D1 WSR detected 1. Initiate Site Emergency Plan and evacuate the Wandoo North Pit. 2. Advise regulatory bodies. Monitoring indicates extraction of water 1. Cease pumping until further notice. from Hotham River not in accordance 2. Advise DoW and DEC. with licence conditions 3. Investigate the cause of breach.

BGM 11099_01 R008 Rev 2 7-Aug-13 26 Newmont Boddington Gold Life of Mine Extension Project

6. Vegetation and Flora Management Plan

6.1 Description

NBG is located in the Jarrah Forest Biogeographic Region and Northern Jarrah Forrest Subregion as per the Interim Biogeographic Regionalisation for Australia (IBRA) (Environment Australia 2000).

NBG is located within the Darling Botanical District of the South-western Botanical province and is largely characterised by open forests of Eucalyptus marginata (Jarrah). Other dominant species include Corymbia calophylla (marri) and Eucalyptus wandoo (wandoo). The diversity of the area is somewhat greater than western jarrah forest areas as the flora reflects the interface between eastern sections of the northern jarrah forest and the Wheatbelt region (Mattiske 2005).

Local flora and vegetation types recorded at the NBG are generally well represented at a regional scale. However, a few species are restricted to the Boddington area and are considered to be of local and regional significance. These species generally occur in plant communities associated with shallow granitic soils (Mattiske 2005).

NBG is within an area prone to impacts from forest disease. The two main disease infestations are Phytophthora cinnamomi (Jarrah dieback) and Armillaria luteobubalina (Armillaria). Forest disease is typically concentrated to lower points in the landscape with much of Thirty Four Mile Brook being infested.

6.2 Environmental aspects to be managed

Activities or aspects of the proposal that have the potential to affect vegetation and flora, not considering mitigation measures, include: • clearing of vegetation for the pit expansion, WRDs, RDA and associated infrastructure will reduce the extent of vegetation communities and potentially disturb threatened flora • mining activities such as vehicle movement and site disturbance associated with the Proposal have the potential to result in the spread of weeds and pathogens including dieback within and outside the project area • dewatering will lower groundwater levels in proximity to the mine pits and may affect groundwater-dependent vegetation (riparian and swamp vegetation) in the vicinity of the drawdown zone.

The management of impacts on vegetation from the alteration of the groundwater regime are discussed in the Adaptive Water Management Plan (Section 3).

6.3 Environmental objectives, targets and performance indicators

To ensure that vegetation and flora management objectives for the proposal are met, a set of environmental targets and performance indicators has been developed (Table 15).

BGM 11099_01 R008 Rev 2 7-Aug-13 27 Newmont Boddington Gold Life of Mine Extension Project

Table 15 Environmental objectives, targets and performance indicators for vegetation and flora management Management objective Target Performance indicator Ensure clearing confined to approved No clearing of vegetation outside Monitoring of disturbance activities development envelope and avoids development envelope. via the site disturbance process areas of conservation significance Annual reconciliation of clearing and (e.g. swamps) reporting via the Annual Environmental Report Prevent spread of forest disease No measureable spread of forest 3-yearly dieback surveys outside of the project area from disease outside of the project area Reporting of survey results via the known infestations within the project from known infestations within the Annual Environmental Report area project area Prevent spread of declared weed No identification of weed species Presence and location of weeds in species outside of known infestation outside of known infestation areas the project area sites within the project area Rehabilitate areas no longer required Achievement of rehabilitation Results of rehabilitation monitoring for mining purposes to achieve a use completion criteria as per the Closure consistent with management of the Plan surrounding forest.

6.4 Implementation strategy

6.4.1 Management actions

Specific actions have been identified to assist in achieving flora and vegetation management objectives (Table 16). The monitoring program for flora and vegetation for the proposal (Table 17) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

When an area is required to be cleared for the purposes of mining activities, the site Ground Disturbance Permit Form must be completed and provided to the site Environment Department for review, assessment and approval. The site Environment Department will inspect the area, demarcate the allowed boundaries and cross-check databases for priority flora, exclusion zones, forest disease and presence of potential black cockatoo habitat trees.

Table 16 Management actions required to achieve targets for flora and vegetation management

Existing process Parameter Action Timing or new commitment Personnel Provide information on vegetation management requirements Prior to Existing process Awareness (e.g. forest disease, weed management and clearing personnel requirements) to all employees and contractors through the commencing site induction process. work on-site Clearing Utilise the NBG internal Site Disturbance Permit Form process Prior to clearing Existing process for all areas requiring clearing to ensure activity is in line with internal and external standards and regulations. Demarcate clearing boundaries with flagging tape to ensure Prior to clearing Existing process minimal area is impacted and trees of significance are avoided. Conduct post clearing inspections to determine compliance Post-clearing Existing process with Site Disturbance Permit and preparation for rehabilitation (if applicable). Forest Complete pre-clearing forest disease surveys to determine if Pre-clearing Existing process disease forest disease is present and if additional management Cannot be protocols are required to limit spread of disease. performed during wet periods

BGM 11099_01 R008 Rev 2 7-Aug-13 28 Newmont Boddington Gold Life of Mine Extension Project

Existing process Parameter Action Timing or new commitment Where forest disease is identified in an area to be cleared, Pre-clearing Existing process determine management boundaries and communicate control protocols. Implement control protocols such as management of drains, At all times Existing process topsoil and gravel stockpiling and vehicle washdown. Identify single entry and exit points if crossing of a disease During Existing process infected area is unavoidable. operations Implement vehicle brushdown/washdown protocols at entry During Existing process into forest areas at all times. operations Restrict access to forest areas when rainfall exceeds 5 mm in During Existing process 24 hours. operations Weed Inspect all vehicles prior to entering to site for soil and At all times. Existing process Management vegetative material. Map known Declared Plant locations. During Existing process operations Undertake spraying of weed infestations as required and Summer and Existing process appropriate. winter as required Eradicate Declared Plants and dispose appropriately. As required Existing process Rehabilitation Rehabilitate areas no longer required for mining purposes. As land is no Existing process longer required Involve the community in decisions regarding areas to be Prior to area Existing process rehabilitated. selection

6.4.2 Monitoring actions

Monitoring actions for flora and vegetation are listed in Table 17.

Table 17 Monitoring actions for flora and vegetation Existing process or Topic Parameter Frequency Location Purpose new commitment Clearing Review of clearing As required on Cleared Ensure clearing Existing process activities completion of areas boundary not clearing activity exceeded Forest Review of forest 3-yearly (or more Proposal Determine spread Existing process disease disease frequently if Area of forest disease boundaries required) Hygiene Inspection of all Daily Dieback Ensure equipment Existing process vehicles and Inspection not carrying soil heavy machinery Point and vegetative accessing site matter Weed Site inspection for As per Site Identify Declared Existing process management Declared and pest Environment Plant and pest weed species Work Area species to target for Inspection eradication Program and opportunistically Rehabilitation Species richness As described in Rehabilitate Determine success Existing process Coverage the Closure Plan d areas of rehabilitation Density Identify areas of Tree health poor rehabilitation in need of re- treatment

BGM 11099_01 R008 Rev 2 7-Aug-13 29 Newmont Boddington Gold Life of Mine Extension Project

6.4.3 Contingency actions

Contingency actions have been developed for implementation if monitoring indicates that the environmental objectives and targets for flora and vegetation management for the proposal are not being achieved (Table 18).

Table 18 Contingency actions for flora and vegetation management Trigger Action Clearing outside of clearing boundary 1. Inspect site. as determined by Site Disturbance 2. Report incident as required. Permit 3. Investigate cause of breach. 4. Implement corrective actions such as rehabilitation or managing area appropriately (i.e. if area was deemed for future clearing, may be more appropriate to ensure adequate drainage is in place to prevent sedimentation runoff and forest disease spread). New declared or pest species 1. Map extent of infestation. infestation identified within project area 2. Spray/remove plants as appropriate (i.e. if weeds have seeded spraying will not be beneficial and plants will need to be removed). 3. Report internally and to the Agriculture Protection Board. 4. Review relevant procedures (e.g. vehicle hygiene procedures) and modify as required. Detection of forest disease in new areas 1. Identify disease outside project area 2. Map extent of diseased area. 3. Investigate cause to determine if there has been a breach in forest disease control procedures 4. Review hygiene procedures and modify as required such as blazing perimeter of effected area and prevent access by unauthorised personnel. 5. Implement reviewed hygiene protocol for any future access in the area Rehabilitation not achieving completion 1. Investigate cause. criteria 2. Amend rehabilitation procedures if necessary. 3. Supplement with additional seed or planting. 4. Continue monitoring.

BGM 11099_01 R008 Rev 2 7-Aug-13 30 Newmont Boddington Gold Life of Mine Extension Project

7. Terrestrial Fauna Management Plan

7.1 Description

Fauna surveys and monitoring have been conducted in and around the NBG mine area since the early 1980s, including a baseline study in 2001/02 (Ninox 2003). Surveys have identified a total of 14 native mammal species, 22 reptile species, 14 frog species, and 91 species of native birds. Most of the species were common to the 1980s and 2001/02 surveys but some species (most notably birds) were unique to either survey. Six introduced species have been identified, with the feral pig being the most common.

In total, 21 terrestrial vertebrate fauna species of conservation significance are currently listed as potentially occurring in the area. These species consist of ten mammals, nine birds (including five migratory species) and two reptiles. Of the 21 species, 12 have been recorded during fauna surveys and a further two are considered likely to occur.

7.2 Environmental aspects to be managed

Activities or aspects of the proposal that have the potential to affect terrestrial fauna, not considering mitigation measures, include: • clearing of vegetation resulting in the loss or fragmentation of fauna habitat and consequent displacement of fauna • vehicle and heavy machinery movements during clearing and construction, may result in fauna strike causing injury or death to individuals.

Management of vegetation clearing is addressed in the Flora and Vegetation Management Plan (Section 6).

In addition, introduced species continue to present a threat to wildlife including conservation significant mammal species. Feral animal control measures have been included in this management plan.

Specific management measures for the protection of black cockatoos are addressed in the Black cockatoo Management Plan.

7.3 Environmental objectives, targets and performance indicators

To ensure that terrestrial fauna management objectives for the proposal are met, a set of environmental targets and performance indicators has been developed (Table 19).

BGM 11099_01 R008 Rev 2 7-Aug-13 31 Newmont Boddington Gold Life of Mine Extension Project

Table 19 Environmental objectives, targets and performance indicators for terrestrial fauna management Management objective Target Performance indicator Protect identified significant No clearing outside approved Monitoring of disturbance activities via the site habitats boundaries disturbance process Annual reconciliation of clearing and reporting via the Annual Environmental Report Minimise the number of Implementation of a phased clearing Annual review and reconciliation reported fauna deaths during approach to the Life of Mine Extension through AER clearing. clearing requirements Fauna trapping and relocation reporting Completion of fauna trapping and relocation prior to clearing activities Minimise the number of No deliberate loss of native fauna from Incident reporting vehicle related fauna site personnel Site speed camera monitoring mortalities and injuries Adherence to site speed limits Restricted access of personnel to forest areas Minimise the effect of feral No measurable increase in feral Number of feral animals recorded during animals on native terrestrial animal abundance within the project trapping exercises fauna. area as a result of mining activities

7.4 Implementation strategy

7.4.1 Management actions

Specific actions have been identified to assist in achieving terrestrial fauna management objectives (Table 20). The monitoring program for terrestrial fauna for the proposal (Table 21) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

BGM 11099_01 R008 Rev 2 7-Aug-13 32 Newmont Boddington Gold Life of Mine Extension Project

Table 20 Management actions required to achieve targets for terrestrial fauna management Existing process Parameter Action Timing or new commitment Personnel Provide information on fauna management requirements (e.g. Prior to Existing process Awareness speed limits, how to manage injured fauna etc) to all employees personnel and contractors through the site induction process. commencing work on-site Install relevant signage on roads and entry points to the mine Ongoing Existing process noting presence of fauna and the reporting of any impact through a formal process. Clearing Conduct fauna trapping and relocation prior to areas being Prior to New cleared. clearing commitment Implement a phased clearing approach to the clearing During New requirements. clearing commitment activities Speed Limits Ensure all access roads are clearly signposted with speed At all times Existing process limits.

Conduct regular spot checks of vehicle speed accessing and During Existing process around the project area. operations Access Restrict access to forest areas through signage and closure of At all times Existing process tracks. Native fauna Display maps and photographs of fauna in the workplace to During Existing process protection and raise awareness and facilitate identification and on-the-ground operations encounter management. Report all observations of protected fauna to the Site During Existing process Environmental Department who will maintain records. operations Give native animals encountered on-site the opportunity to At all times Existing process move on if there is no threat to personnel safety in doing so. If sick or injured animals are encountered, contact local carers As required Existing process to assess possible rescue and rehabilitation of the animal. Ensure site has trained handlers to remove venomous fauna At all times Existing process from work areas. Ensure food waste is not accessible to attract native fauna or At all times Existing process feral animals. Prohibit pets and firearms on the NBG leases. At all times Existing process Connectivity Ensure some connectivity between the eastern and western During New vegetated areas of the mine site through implementing fauna operations commitment access and egress ability across roads and pipelines, and/or undertaking periodic trapping and relocation of fauna. Consult with experts to identify most appropriate measures to Prior to New complete above action. operations commitment Feral animals Report all observations of feral animals to the Site During Existing process Environmental Department who will maintain records. operations Restrict access to Newmont owned property for apiarists. Ongoing Existing process Control feral pigs, cats and foxes in and around the mine site. At all times Existing process Implement feral animal control programs (e.g. baiting and hog During Existing process hoppers) within the mining tenements. operations Research Continue with research into habitat use by key species of Ongoing Existing process conservation significance in order to improve the understanding and new of potential impacts and to continuously improve mitigation and commitment rehabilitation methodologies to best support these species.

BGM 11099_01 R008 Rev 2 7-Aug-13 33 Newmont Boddington Gold Life of Mine Extension Project

7.4.2 Monitoring actions

Monitoring actions for fauna are listed in Table 21.

Table 21 Monitoring actions for fauna Existing process Locatio Topic Parameter Frequency Purpose or new n commitment Presence of Monitor the project area Opportunistically Across To ascertain Existing process threatened for presence of threatened throughout duration site whether species fauna through of mining operations threatened fauna opportunistic sightings species are on- site. Introduced Monitor the project area Opportunistically Across To ascertain Existing process species for introduced fauna throughout duration site whether species of mining operations introduced species are on- site and determine effectiveness of feral animal control. Waste Monitor waste disposal Monthly and Waste Assess whether Existing process disposal areas to assess if waste opportunistically disposal waste areas are access disposal area/s are being throughout duration areas being accessed accessed by animals. of mining operations by animals. Fauna Check facilities where Opportunistically Across Correct animal Existing process entrapment potential entrapment of site entrapment as fauna can occur. soon as possible. Fauna Review fauna death and Annually Across To assess Existing process death and injury data collected site number of fauna protection across site, particularly deaths and haul roads, to ensure improve fauna populations are protection adequately protected. procedures.

7.4.3 Contingency actions

Contingency actions have been developed if monitoring indicates that the environmental objectives and targets for terrestrial fauna management for the proposal are not being achieved (Table 22).

Table 22 Contingency actions for terrestrial fauna management Trigger Action Fauna mortality 1. Inspect animal to determine species, sex, presence of young etc 2. Remove carcass from roads to prevent further mortalities of scavenging animals 3. Report as an environmental incident and include in the Annual Environmental Report to inform DEC. Multiple occurrences of fauna injury or 1. Investigate whether location(s) is a fauna corridor. death from vehicle impacts at single 2. If identified as a fauna corridor, erect new or improve any existing location(s) warning signs and set lower speed limit for that location. 3. Review induction material and re-inform personnel of speed restrictions and high-risk areas. Increase in abundance and/or 1. Investigate cause. distribution of feral animals 2. Review control measures and procedures. 3. Re-inform all personnel of any changes to control procedures. 4. Implement remedial and/or revised control measures.

BGM 11099_01 R008 Rev 2 7-Aug-13 34 Newmont Boddington Gold Life of Mine Extension Project

8. Black Cockatoo Management Plan

8.1 Description

All three species of black cockatoo that occur in south-western Australia (Baudin’s Black-Cockatoo, Carnaby’s Black-Cockatoo and Forest Red-tailed Black-Cockatoo) have been recorded foraging within the Development Envelope (Lee et al. 2012). Carnaby’s Black-Cockatoo and Forest Red-tailed Black- Cockatoo are also known to breed within the area (Lee et al. 2012). Each species show different seasonal population patterns with Forest Red-tailed Black-Cockatoos recorded in similar numbers year round whilst Carnaby’s Black-Cockatoo populations peaked in spring and summer but were present year round and Baudin’s Black-Cockatoo were less common in the summer breeding season (Lee et al. 2012).

Native vegetation, pine plantations and mine site rehabilitation sites within the Development Envelope are utilised as foraging habitat by black cockatoos, while mature, hollow-bearing Jarrah, Marri and Wandoo trees are potential nesting habitat for Carnaby’s Black-Cockatoo and Forest Red-tailed Black-Cockatoo (Lee et al. 2012).

8.2 Environmental aspects to be managed

The following aspects of the proposal may affect fauna values: • clearing of vegetation resulting in the loss or fragmentation of foraging or breeding habitat and consequent displacement of black cockatoo species • vehicle and heavy machinery movements during clearing and construction, may result in vehicle strike, causing injury or death to individuals.

Management actions to be implemented to protect all native fauna including black cockatoos are addressed in the Terrestrial Fauna Management Plan (Section 7).

8.3 Environmental objectives, targets and performance indicators

To ensure that black cockatoo management objectives for the proposal are met, a set of environmental targets and performance indicators has been developed (Table 23).

BGM 11099_01 R008 Rev 2 7-Aug-13 35 Newmont Boddington Gold Life of Mine Extension Project

Table 23 Environmental objectives, targets and performance indicators for black cockatoo management Management objective Target Performance indicator Maximise likelihood of NBG Suitable black cockatoo habitat in areas Vegetation survey results tenements being used as feeding retained for conservation. Black cockatoo survey results and breeding habitat during the Provision for fauna drinking sites to increase Incident reporting life of the mine and following habitat suitability and aversion to residue Rehabilitation monitoring results mine closure. facilities. Presence of black cockatoos in NBG tenements. Rehabilitation areas include species most suitable for feeding and breeding. Increase understanding of black Improvements in management guidelines for Completion of research reports cockatoo species artificial hollows/nests. Black cockatoo survey results Reduction in knowledge gaps associated with population demographics and health, leading to future (possible) collaborations examining: • disease status of populations (Beak and Feather Disease and Polyomavirus) and resultant impacts to breeding • development of local, in-house capacity to age black cockatoos at Murdoch University. Improved occupation rates of artificial hollows in comparison to previous occupancy rates. Demonstrate continuous Continued sponsorship of studies focused Completion of research reports improvement in habitat on improved understanding of black Measurement as per audit management in regards to black cockatoo ecology. requirements for ISO14001. cockatoos Incorporation of findings from on-going investigations and monitoring into environmental management plans. Minimise the number of mine No deliberate loss of native fauna from site Incident reporting related black cockatoo mortalities personnel or clearing of breeding habitat. and injuries No loss of black cockatoos from drinking from RDAs.

8.4 Implementation strategy

8.4.1 Management actions

Specific actions have been identified to assist in achieving black cockatoo management objectives (Table 24). The monitoring program for black cockatoos for the proposal (Table 25) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

BGM 11099_01 R008 Rev 2 7-Aug-13 36 Newmont Boddington Gold Life of Mine Extension Project

Table 24 Management actions required to achieve targets for black cockatoo management Existing process Parameter Action Timing or new commitment Personnel Provide information on black cockatoos and any other factors Prior to Existing process awareness that may have a direct or indirect impact on populations to all personnel and education employees and contractors through the site induction commencing process. work on-site Communicate requirements of black cockatoo management Ongoing Existing process at neighbouring schools and community meetings. Include black cockatoo theme topics in World Environment Ongoing Existing process Day activities. Vegetation Demarcate areas on ground prior to clearing to ensure Prior to clearing Existing process clearing foraging and habitat trees of significance are avoided. & mining Survey potential habitat trees in clearing area to determine if During Existing process any nestlings are present disturbance activity Wait until nestlings have left the nest before felling any During Existing process potential habitat tress in the disturbance area. disturbance activity Access to Maintain drinking points near known breeding and feeding Prior to and Existing process water areas during operations Maintain permanent drinking water sources on the site of During Existing process higher water quality. These are naturally more attractive to operations the birds than the RDAs. Comply with the CN Code and commitment to destruct WAD During Existing process CN to ensure no impact to black cockatoos should they drink operations from F1 RDA and new RDA. Utilise bird scarers to keep birds off the RDAs. During Existing process operations Utilise Wildlife Observers to monitor wildlife accessing F1 During Existing process RDA and new RDA. operations Noise Ensure noise levels are managed in accordance with the During breeding Existing process Noise Regulations Light Ensure lighting is directed to minimise light spill outside the At all times Existing process mining area. Vehicle Maintain roads and tracks to prevent formation of water Ongoing Existing process movement holding structures. Rehabilitation Ensure food plant and hollow-producing tree species are used At all times Existing process in rehabilitation seed mixes. Habitat Clearly demarcate areas to be retained for conservation (i.e. At all times Existing process retention protected from mining activities) to ensure the habitat remains /conservation of high quality for black cockatoos. Ensure areas selected for conservation for black cockatoos At all times Existing process contain high value habitat and/or breeding trees. Control feral bees in and around the mine site. At all times Existing process Investigate the benefit of using artificial nest hollows in On going Existing process remnant forest areas. Ensure actions are consistent with existing black cockatoo At all times Existing process recovery plans. Research Continue with research into habitat use by black cockatoos in Ongoing Existing process order to improve the understanding of potential impacts and and new to continuously improve mitigation and rehabilitation commitment methodologies to best support these species.

BGM 11099_01 R008 Rev 2 7-Aug-13 37 Newmont Boddington Gold Life of Mine Extension Project

8.4.2 Monitoring actions

Monitoring actions for black cockatoos are listed in Table 25.

Table 25 Monitoring actions for black cockatoo management Existing process Topic Parameter Frequency Location Purpose or new commitment Watering Maintenance of Quarterly Artificial To ensure Existing process points watering points watering points watering point are maintained in working order Rehabilitation Composition of Prior to N/A To ensure seed Existing process rehabilitation seed rehabilitation mix includes mix known black cockatoo food and hollow- producing plants Emergence of Rehabilitation Rehabilitation To ensure Existing process seedlings in monitoring areas survival of known rehabilitated areas conducted at years black cockatoo 1, 3, 7, 12 and 20. food and hollow- producing plants Bees Presence of feral Opportunistically NBG To determine if Existing process bees tenements bee removal required

8.4.3 Contingency actions

Contingency actions have been developed if monitoring indicates that the environmental objectives and targets for black cockatoo management for the proposal are not being achieved (Table 26).

Table 26 Contingency actions for black cockatoo management Trigger Action Black cockatoo mortality 1. Inspect animal to determine species, sex, etc. 2. Advise DEC and DSEWPaC as soon as practically possible. 3. Undertake autopsy procedure through Murdoch University. Breeding black cockatoos located in 1. Wait until nestlings have left nest before felling any habitat trees area to be cleared 2. Replace cleared trees with artificial hollows in an undisturbed or neighbouring area. Seed mix contains insufficient black 1. Source more appropriate seed. cockatoo food plant and hollow- 2. If already planted, supplement seeding with additional planting or seed. producing tree species Insufficient black cockatoo food plant 1. Investigate cause. and hollow-producing tree species 2. Amend rehabilitation procedures if necessary. seedling emergence in rehabilitation 3. Supplement with additional seed or planting. Feral bees detected 1. Eradicate immediately.

BGM 11099_01 R008 Rev 2 7-Aug-13 38 Newmont Boddington Gold Life of Mine Extension Project

9. Indigenous Heritage Management Plan

9.1 Description

NBG is located in the Gnaala Karla Booja (GKB) Native Title Claim Area which encompasses more than 30 000 km2 of South West, Western Australia. The NBG Cultural Heritage Management Plan recognises Aboriginal heritage sites as places that have cultural, spiritual, aesthetic, historical or social significance to the past, present and future generations of the Gnaala Karla Booja people. In conjunction with the Community Partnership Agreement and the Preservation of Aboriginal Heritage Agreement (PAHA), various management measures are to be applied to all activities that occur within the NBG Heritage Area of Influence (HAI) from exploration to mine closure, and activities will be designed to avoid any damage to cultural heritage sites, either known or unknown.

Previous surveys have indicated that the majority of archaeological and ethnographic sites in this region tend to focus on the flats around rivers, creeks and wetlands, and few traces of Aboriginal activity have been found in the hilly or dry type environments (Pearce 1981). Subsequent ethnographic surveys found that most of the extant Aboriginal knowledge of the Boddington District is focused around the old Marradong town site, the Hotham River and nearby farms that employed Aboriginal people (Yates 2012a, 2012b). Only general knowledge of camping and hunting around the creeks was obtained for the NBG mining areas. The most recent of these studies identified the Hotham River and its tributaries as a Mythological Site, which has since been placed on the Register of Aboriginal Sites.

Detailed Ethno-historical research suggests that the sparse and fragmented traditional knowledge may be attributed to the gradual breakdown of traditional Aboriginal culture through the late nineteenth century, culminating in an absence (in the historic record) of Aborigines in the Boddington district during the pre- World War II era. The post war records show Aborigines employed on roads, farms and timber mills, most of who came from outside the Boddington District.

9.2 Environmental aspects to be managed

Activities or aspects of the proposal that have the potential to affect Aboriginal heritage, not considering mitigation measures, include: • physical disturbance of archaeological sites and sites of cultural significance as a result of mining activities including disturbance to land, dewatering, discharges of surplus water and alternation of surface drainage.

9.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on Aboriginal heritage objectives of the proposal (Table 27).

BGM 11099_01 R008 Rev 2 7-Aug-13 39 Newmont Boddington Gold Life of Mine Extension Project

Table 27 Environmental objectives, targets and performance indicators for Aboriginal heritage management Management objective Target Performance indicators Minimise impact to heritage sites, and No heritage disturbances outside No unauthorised disturbance to only undertake disturbance where bounds of appropriate approvals heritage sites appropriate approvals exist Ensure effective communication with Successful relationship with Regular liaison with Traditional Traditional Owners in relation to the Traditional Owners Owners regarding heritage issues site No heritage incidents in new project Heritage incident reports areas Comply with the Aboriginal Heritage No heritage incidents Heritage incident reports Act 1972 (WA) Where ground disturbance will occur, guidelines for management of heritage sites will be communicated Ensure heritage risks are Personnel are aware of heritage Guidelines for management and communicated to personnel process and the importance of locations of heritage sites Aboriginal cultural heritage as a value communicated to personnel through to be protected wherever possible inductions No heritage incidents

9.4 Implementation strategy

Within NBG, Site Identification Surveys compromising of both archaeological and ethnographic research is the preferred methodology when assessing areas of potential disturbance. Site Identification Surveys provide the most comprehensive coverage of country and will help to ensure that NBG meets both its legislative obligations and commitment to protect and preserve Aboriginal cultural heritage. There are several known sites of cultural significance around the NBG and monitoring these is an important part of site management. Each site has the potential to change as a result of environmental conditions and management requirements for individual sites may alter over time. To ensure that management strategies remain appropriate for each site over time, there is a requirement for them to be monitored, maintained and if necessary amended.

BGM 11099_01 R008 Rev 2 7-Aug-13 40 Newmont Boddington Gold Life of Mine Extension Project

9.4.1 Management actions

Specific actions have been identified to assist in achieving Aboriginal heritage management objectives (Table 28).

Table 28 Management actions required to achieve targets for the management of Aboriginal heritage Existing process Parameter Action Timing or new commitment Personnel Provide information on Aboriginal heritage requirements to all Prior to Existing process Awareness employees and contractors through the site induction personnel process. commencing work on-site All employees and long-term contractors to complete cross Existing process cultural awareness training. Consultation Inform tradition owners of relevant proposed works, work During project Existing process schedules and potential impacts on-site. development and design Clearing Project Manager to liaise with the site Social Responsibility Prior to clearing Existing process Department to determine if any known sites of significance are present within the disturbance area and if heritage surveys are required. Surveys Undertake Site Identification Surveys for all areas of Prior to clearing Existing process proposed ground disturbance. Site protection Flag and/or fence the boundaries of heritage sites within Prior to clearing Existing process 100 m of construction or operation areas that have been identified for protection. Where Ground Disturbance Works are proposed to be carried Prior to clearing Existing process out in close proximity to specifically identified Aboriginal and earthworks Sites, determine the requirement to employ a Monitoring Team in consultation with the relevant Heritage Consultant and Representatives. Where it is recommended that monitoring is required, undertake either of the following: 1. Modify the proposed Ground Disturbance Works so that such proposed modified activities will not infringe on, or be conducted in close proximity of the specifically identified Aboriginal Site; or 2. Appoint a Monitoring Team to monitor Ground Disturbance Works being carried out in close proximity of the specifically identified Aboriginal Site. In circumstances where agreement cannot be reached regarding the above, seek Ministerial Consent under Section 18 of the Aboriginal Heritage Act 1972. Ensure heritage sites are identified in all approvals request Prior to clearing Existing process permits. and earthworks

BGM 11099_01 R008 Rev 2 7-Aug-13 41 Newmont Boddington Gold Life of Mine Extension Project

9.4.2 Monitoring actions

The monitoring program for Aboriginal heritage values at NBG (Table 29) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 29 Monitoring actions for Aboriginal heritage

Existing process or Topic Parameter Frequency Location Purpose new commitment Clearing Reconciliation of approved Post-clearing Clearing To ensure Existing process clearing with actual sites cleared area has clearing not extended beyond approved boundary Known Visual inspections of To be Known To ensure no Existing process heritage known heritage sites and determined in heritage unauthorised sites confirmation of site consultation with sites site disturbance boundaries with GIS local indigenous register information groups

9.4.3 Contingency actions

Contingency actions have been developed to be enacted if monitoring indicates that the environmental objectives and targets for the management of Aboriginal heritage are not being achieved (Table 30).

Table 30 Contingency actions for Aboriginal heritage Trigger Action Disturbance of 1. Stop work immediately, and notify manager known heritage site 2. Investigate the cause of the incident, record the incident and all other relevant information 3. Report the incident to regulatory authorities (DIA) and relevant Traditional Owner stakeholders 4. Implement corrective actions to mitigate harm in consultation with the DIA and Traditional Owner stakeholders 5. Review and revise heritage management measures as appropriate to prevent recurrence. Detection of If during any operation a previously unknown site is identified: suspected new 1. All work within the immediate vicinity is to stop immediately heritage site 2. Contact is to be made with the Manager Social Responsibility or Senior Advisor Social Responsibility (Operations) who make contact with the Traditional Owners, the South West Aboriginal Land and Sea Council and the Department of Indigenous Affairs to confirm further requirements, and 3. Work is not to recommence until the site Social Responsibility Department provide advice that it is appropriate to do so.

BGM 11099_01 R008 Rev 2 7-Aug-13 42 Newmont Boddington Gold Life of Mine Extension Project

10. Noise Management Plan

10.1 Description

The town of Boddington is approximately 12 km southeast of NBG (Figure 1). The nearest residences are within a predominantly rural area located to the northeast, east, southeast and south of the Proposal. The closest privately owned residence is located northeast of the proposed new RDA and is the only sensitive receptor located within 3 km of the NBG. This is a temporary residence for forestry production.

Noise and vibration emissions are generated by several mining activities. The most notable is use of explosives for blasting. This activity typically produces two noise-related components that include: • air-blast over-pressure, which is the part of the blast that is heard and which can rattle windows and fittings in man-made structures • ground vibration, which is less likely to be detected by humans, particularly at locations remote from the blast.

Whilst air-blast noise does not cause structural damage, ground vibration can damage buildings and infrastructure. Noise and vibration are also emitted by plant and equipment, such as crushing and grinding circuits and vibrating screens at very low frequencies. Noise from haulage equipment, reversing alarms and vehicle traffic can also be a nuisance for local residents.

10.2 Environmental aspects to be managed

The following aspects of the Proposal have been identified as requiring management in order to minimise and mitigate the risks associated with noise: • undesirable noise generated from mining activities resulting in disturbance to local neighbours resulting from activities such as: • blasting • waste rock disposal • processing (e.g. from conveyors, screening, crushing, milling and grinding) • alarms • off-site transport activities • operations at the accommodation village.

10.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on noise management objectives for the proposal (Table 31).

Table 31 Environmental objectives, targets and performance indicators for the mineral waste management Management objective Target Performance indicators Minimise nuisance noise to the Noise concerns from community addressed Complaints register community from NBG through completion of grievance protocol. Feedback from community liaison operations. Compliance with the Environmental Results from noise monitoring Protection (Noise) Regulations 1997

BGM 11099_01 R008 Rev 2 7-Aug-13 43 Newmont Boddington Gold Life of Mine Extension Project

10.4 Implementation strategy

10.4.1 Management actions

Specific actions have been identified to assist in achieving the noise management objectives (Table 32). The monitoring program for noise for the proposal (Table 33) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 32 Management actions required to achieve targets for noise management Existing process or Parameter Action Timing new commitment Personnel Provide information on importance and requirements for Prior to Existing process awareness noise and vibration management to all employees and personnel contractors through the site induction process. commencing work on-site Construction Carry out all construction work out in accordance with During Existing process Section 6 of AS 2436-1981 Guide to Noise Control on construction Construction, Maintenance and Demolition Sites. Blasting Schedule blasting during daylight hours only and where At all times Existing process possible avoid blasting during public holidays. Vehicle and Implement noise control measures for vehicles and other At all times Existing process equipment equipment. noise Install smart reversing alarms in Caterpillar mining fleet Prior to use Existing process suppression (trucks and ancillary equipment) to reduce tonal noise impacts. Establish preventative maintenance schedules for all As per Existing process vehicles, heavy equipment and plant. schedule Reduction Site noise management committee to investigate and Ongoing Existing process provide recommendations on noise mitigation strategies throughout the mine life. Communication Liaise with residents and interested stakeholders on the Ongoing Existing process noise aspects of the operations and obtain feedback on operations and performance.

10.4.2 Monitoring actions

Monitoring actions for noise and vibration are listed in Table 33.

Two permanent noise and vibration monitors have been established to measure blast and operational noise. One is located on Hotham Farm, which is the closest permanent residence to the mining operation and the other is located in the Boddington township. Mobile handheld monitors are also used where required.

BGM 11099_01 R008 Rev 2 7-Aug-13 44 Newmont Boddington Gold Life of Mine Extension Project

Table 33 Monitoring actions for noise Existing process or Location Parameter Frequency Procedure Purpose new commitment Permanent Noise level Each blast Noise and Vibration Confirm blast Existing process Monitor Nearest Vibration Management Plan operations are residence Blast Monitoring at within limits Hotham Farm Standard Task Procedure Permanent Noise level Each blast Noise and Vibration Confirm blast Existing process Monitor Vibration Management Plan operations are Boddington within limits Township Mobile Monitor Noise level As required Noise and Vibration Where noise Existing process Other residence Vibration Management Plan complaints being received (other than nearest residence) or where nearest residence is not Hotham Farm (e.g. RDA construction blasting) Nearest Operating Annual Noise and Vibration Confirm blast Existing process residence Noise Level survey Management Plan operations are within limits

10.4.3 Contingency actions

Contingency actions have been developed to be enacted if monitoring indicates that the environmental objectives and targets for noise management are not being achieved (Table 34). Where noise complaints are received, an investigation is commenced which will involve stakeholder consultation and additional monitoring of activities. Where activities are found to be causing nuisance noise above the approved limits, actions will be taken to mitigate these impacts.

Table 34 Contingency actions for noise management Trigger Action Noise complaint received 1. Instigate investigation and implement grievance protocol. 2. Increase stakeholder consultation around noise issue. 3. Undertake or increase noise monitoring at residence. 4. Where noise breaches have been found to occur, report noise complaint as an environmental incident, investigate and implement measures to mitigate this impact. Monitoring indicates non-compliance 1. Investigate source of the high noise levels. with the Environmental Protection 2. Take appropriate action to reduce the noise levels. (Noise) Regulations 1999 3. Confirm success of actions taken through further monitoring.

BGM 11099_01 R008 Rev 2 7-Aug-13 45 Newmont Boddington Gold Life of Mine Extension Project

11. Air Quality Management Plan

11.1 Description

Mining and mineral processing activities at NBG have the potential to impact on the quality of air within the Proposal area. In particular, dust emissions from fugitive and process point sources can create a nuisance for personnel at the site as well as the broader community if not properly controlled and emissions from combustion sources such as the mine haulage fleet have the potential to degrade air quality.

The following point source and fugitive emissions have been identified as requiring management in order to minimise and mitigate the risks associated with dust generation: • point source emissions: • crushing and screening circuits • fine ore bin • elution heaters • carbon regeneration kilns • gold room furnace • electrowinning cells • laboratory sample preparation • dangerous goods storage • pneumatic transfer reagent storage • bag puncture and enclosure transfer reagent storage • hydrocarbon storage. • fugitive emissions: • crushing plant and overland conveyors • transfers to mill feeders and fine screens • reagents handling • vehicle and heavy equipment movement in and around mining operations • blasting activities • abrasive blasting activities • controlled burning • residue disposal area.

The primary emission of concern for the operation is particulate matter. The main sources of particulate emissions from mining operations are the fugitive emissions associated with haulage and light traffic on unsealed roads, wind erosion in areas where vegetation has been cleared, and dust lift-off from stockpiles.

11.2 Environmental aspects to be managed

Activities or aspects of the proposal that have the potential to affect air quality, not considering mitigation measures, include: • travel of vehicles and heavy equipment on unsealed roads • drilling and blasting activities • loading and unloading of rock at dumps and stockpiles • crushing, conveying and processing • wind erosion of exposed and active surfaces.

BGM 11099_01 R008 Rev 2 7-Aug-13 46 Newmont Boddington Gold Life of Mine Extension Project

11.3 Environmental objectives, targets and performance indicators

Environmental targets and performance indicators have been developed based on waste management objectives of the proposal (Table 35).

Table 35 Environmental objectives, targets and performance indicators for air quality management Management objective Target Performance indicators Ensure fugitive emissions do not Ambient air and point source Complaints register adversely affect the health of emission monitoring demonstrate Results of air quality monitoring personnel and adjacent land users, or compliance with State Environment the amenity of surrounding land uses (Ambient Air) Policy 2009 (draft) No community complaints or concerns related to ambient air quality

11.4 Implementation strategy

11.4.1 Management actions

Specific actions have been identified to assist in achieving the air quality management objectives (Table 36). NBG air quality management strategy recognises and responds to the issue of air emissions at all stages of mining, from design, construction and operation through to mine closure. NBG’s air quality management strategy involves the following stages: • systematically identifying sources • identifying relevant legal and other requirements • assessing the significance of each point and diffuse source in terms of: ∗ potential effects on the environment ∗ the quantity and frequency of emission ∗ the conditions under which the emission occurs ∗ any relevant community concerns • prevention, minimisation and/or control of emissions.

Table 36 Management actions required to achieve targets for the management of ambient air quality Existing process or Parameter Action Timing new commitment Personnel Communicate air quality management to employees and long Prior to Existing process Awareness term contractors through the site induction (focussing on dust personnel suppression and identification and reporting of excessive dust commencing through the site hazard identification process). work on-site Clearing Limit the extent of clearing through planning and clearly Prior to Existing process demarcated areas. clearing Exposed Seal all permanent access roads and those roads identified as Prior to Existing process surfaces high traffic with the potential to generate excessive dust. operation Spray haul road and ROM pad areas with water for dust During Existing process suppression. operations Establish and enforce vehicle speed limits for unsealed roads. At all times Existing process Manage residue deposition in a rotational fashion across the During Existing process facility to reduce fugitive emission generation. operations Topsoil and gravel stockpiles present for the life of the As required Existing process operation to be vegetated or sprayed with hydromulch where possible.

BGM 11099_01 R008 Rev 2 7-Aug-13 47 Newmont Boddington Gold Life of Mine Extension Project

Existing process or Parameter Action Timing new commitment Crushing Maintain water sprayers (mist and deluge) to reduce the During Existing process and generation of dust from crushing and conveying activities. operations conveying Processing Fabric filter bag houses are fitted where appropriate (e.g. During Existing process secondary crushing, coarse screening and fine ore bins). operations Utilise fresh air ventilation where required in confined During Existing process workspaces (e.g. primary crusher and coarse ore stockpile operations reclaim tunnels). Preventative Establish preventative maintenance schedules for all vehicles, As per Existing process Maintenance heavy equipment and plant. schedule

11.4.2 Monitoring actions

The monitoring program for air quality (Table 37) is designed to ensure that operations are consistent with the prescribed management actions. Monitoring will measure the success of these actions in accordance with the management objectives and targets.

Table 37 Monitoring actions for air quality Existing process or Topic Parameter Frequency Location Purpose new commitment

Ambient air PM2.5, PM 10, Continuous Permanent Monitor ambient Existing process quality SO2, NOx, CO Ambient Air air quality

and CO2 Quality Monitoring Station (Communications Hills)

Ambient air PM2.5, PM 10, Staged Mobile Osiris units Monitor ambient Existing process quality TSP monitoring used at specific air quality at locations specific locations Ambient air Deposited As required Depositional Monitor ambient New commitment quality Particulates 30-day gauges used at air quality at (mg/m2/day) sample specific locations specific locations collection Point source As per licence As per As per licence Determine Existing process monitoring conditions licence conditions particulate and air conditions pollutant loadings from the operation Point source As per licence As per As per licence Determine Existing process monitoring conditions licence conditions particulate and air conditions pollutant loadings from the operation

11.4.3 Contingency actions

Contingency actions have been developed to be enacted if monitoring indicates that the environmental objectives and targets for the management of air quality are not being achieved (Table 38).

BGM 11099_01 R008 Rev 2 7-Aug-13 48 Newmont Boddington Gold Life of Mine Extension Project

Table 38 Contingency actions for waste Trigger Action Dust emissions exceed 50 mg/m3 after Investigate fault and repair system. discharge from dust collection systems Opacity from process fugitive emission Investigate fault and repair system. points exceed acceptable criteria NEPM air quality exceeded at 1. Monitor at pre-nominated project boundary points (determined by Communications Hill prevailing wind) for at least 24 hours. NEPM air quality exceeded at project 2. Identify cause of condition (e.g. climate, fire or operations). boundary point 3. Implement additional control measures as appropriate. Complaint related to air quality 4. Moderate activities generating dust if actions above are inadequate to received reduce dust emissions. 5. If exceedance is attributable to high winds, cease work until suitable conditions exist. 6. Report occurrences in Annual Environmental Report.

BGM 11099_01 R008 Rev 2 7-Aug-13 49 Newmont Boddington Gold Life of Mine Extension Project

12. References

Aquaterra 1999, Boddington Gold Mine Baseline Hydrological Report, report prepared for Worsley Alumina, Western Australia.

Coffey Environments (Coffey) 2010, Boddington Life of Mine Re-permitting Project (draft), unpublished report prepared for Newmont Boddington Gold Pty Ltd, Subiaco.

Environment Australia 2000, Revision of the Interim Biogeographic Regionalisation for Australia (IBRA) and Development of Version 5.1 – Summary Report, Department of Environment and Heritage, Canberra.

Mattiske Consulting Pty Ltd (Mattiske) 2005, Review of Flora and Vegetation located in the Boddington Gold Mine and Hedges Lease Areas, unpublished report prepared for Worsley Alumina, Perth.

Ninox Wildlife Consulting (Ninox) 2003, The Vertebrate Fauna of the Boddington Gold Mine, unpublished report prepared for BGM Management Company Pty Ltd, Subiaco.

Pearce R 1981, Worsley Alumina Project Survey for Aboriginal Sites, report prepared for Worsley Alumina Ltd.

Schlumberger Water Services Australia Pty Ltd (Schlumberger) 2010, Boddington Gold Mine Summary of Groundwater, Surface Water and Geochemical Conditions and Implications for Closure, report prepared for Newmont Mining Services Pty Ltd, Subiaco.

Strategen Environmental Consulting (Strategen) 2005, Boddington Gold Mine Expansion. Section 45C Assessment of modifications to project: increase in nominal rated throughput and associated variations, report prepared for BGM Management Company Pty Ltd, Subiaco.

Welker Environmental Consulting 2001, Boddington and Hedges Gold Mines Boddington Expansion Shire of Boddington Section 46 Review and Gas-Fired Power Station and Natural Gas Pipeline 12 km Northwest of Boddington Environmental Protection Statement, report prepared for Worsley Alumina Pty Ltd, Perth.

Yates Heritage Consulting (Yates) 2012a, Preliminary Report on an Aboriginal Site Survey of the Proposed D6 Water Storage Dam Hotham Farm, report prepared for Newmont Boddington Gold Pty Ltd, Subiaco.

Yates Heritage Consulting (Yates) 2012b, Preliminary Report on an Aboriginal Site Survey of the Proposed Residue Disposal Area Option 1 Saddle Back Farms North Bannister, report prepared for Newmont Boddington Gold Pty Ltd, Subiaco.

BGM 11099_01 R008 Rev 2 7-Aug-13 50