Works Approval Supporting Documentation West Angelas Iron Ore Project Deposit C, D and G Proposal

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Works Approval Supporting Documentation

West Angelas Iron Ore Project Deposit C, D and G Proposal

March 2019 RTIO-HSE-0331347

Disclaimer and Limitation This report has been prepared by Rio Tinto Iron Ore (Rio Tinto), on behalf of Robe River Mining Co Pty Ltd, specifically for the West Angelas Iron Ore Mine. Neither the report nor its contents may be referred to without the express approval of Rio Tinto, unless the report has been released for referral and assessment of proposals.

Document Status Approved for Issue Rev Author Reviewer/s Date To Whom Date Jacobs / 0 S.Savage 29/02/2019 DWER 5/03/2019 R.Evans

RTIO-HSE-0331347 TABLE OF CONTENTS

1 Licensee Information ...... 1 Occupier Details ...... 1

2 Premises Details ...... 2 Prescribed Activity Overview ...... 2 Legal Land Description ...... 2 Location and Siting ...... 3 Location Context ...... 3 Co-ordinates of the proposed infrastructure ...... 3 Sensitive Land Uses ...... 8 Specified Ecosystems ...... 9 Other environmental receptors ...... 9 Topography ...... 9 Water Resources ...... 10 Hydrogeology ...... 10 Geology ...... 10 Fauna ...... 11 Vegetation and Flora ...... 11 Stakeholder and Community Consultation ...... 12 Community Consultation ...... 12 Aboriginal Heritage ...... 12

3 Prescribed Premises Category ...... 13 Current Environmental Protection Act 1986 (Part V) Licences / Works Approvals .. 14 Other Approvals / Licences ...... 14 Part IV of the Environmental Protection Act 1986 ...... 14 Rights in Water and Irrigation Act 1914 ...... 15 State Agreement and Mining Act 1978 ...... 15

4 Process Description ...... 16 Project Overview ...... 16 Facility Layout and Process Flow ...... 17 Design and Operation ...... 18 Primary Crushing Facility ...... 18 Overland Conveyor ...... 19 ROM Pad ...... 19 Apron Feeder and Vibrating Grizzly Capacity ...... 19 Surge Bin Facility ...... 20 Secondary Crushing Facility ...... 20 Heavy Vehicle Refuelling Facility ...... 21

iii

RTIO-HSE-0331347 Dewatering discharge outlets ...... 23 Waste Dump Landfill ...... 27 Temporary Mobile Crushing and Screening Plant ...... 27 Timescale for Construction / Operation ...... 28 Commissioning and Reporting ...... 28

5 Risk Identification and Assessment ...... 30

6 Emission Management and Controls ...... 36 Dust Emissions ...... 36 Description of risk event ...... 36 Proposed environmental controls ...... 38 Residual risk rating ...... 41 Noise and Vibration ...... 41 Description of risk event ...... 41 Proposed environmental controls ...... 42 Residual risk to environment ...... 43 Odour Emissions ...... 43 Light Emissions ...... 43 Discharge to water ...... 43 Discharge to Land ...... 44 Primary Crushing / Screening Facility ...... 44 6.6.1.1 Description of risk event ...... 44 6.6.1.2 Proposed environmental controls ...... 44 6.6.1.3 Residual risk to the environment ...... 45 Dewatering Discharge Outlets ...... 45 6.6.2.1 Description of risk event ...... 45 6.6.2.2 Proposed environmental controls ...... 46 Residual risk to environment ...... 47 Hydrocarbon Management ...... 49 Solid/Liquid Waste ...... 50 Flora and Fauna ...... 51

7 Rehabilitation and Closure ...... 52

8 Project Costs ...... 53

9 Summary of Commitments ...... 54

Appendix 1 - Figures ...... 59

iv RTIO-HSE-0331347 TABLES Table 2-1 Coordinates (MGA Zone 50) of proposed activities1 ...... 3 Table 2-2 Sensitive Land Uses and distance from application boundary ...... 8 Table 2-3 Specified ecosystems ...... 9 Table 2-4: Other landscape features, relevant factors or receptors ...... 9 Table 8-1: Project Costs ...... 53

FIGURES Figure 2-1: Regional Setting for West Angelas Iron Ore Mine ...... 5 Figure 2-2: Existing West Angelas Project and proposed new prescribed premise boundary . 6 Figure 2-3: Indicative location of infrastructure ...... 7 Figure 4-1 – Primary Crushing Facility ...... 19 Figure 4-2 - Deposit A Surge-Bin Facility Indicative Model ...... 20 Figure 4-3 - Heavy Vehicle Refuelling Facility General Conceptual ...... 22 Figure 4-4- Temporary Camp Bulk Diesel Storage ...... 23 Figure 4-5 - Dewatering Discharge Outlet Locations ...... 26. Figure 6-1 – Preliminary design -primary crushing facility dust extraction system ...... 39 Figure 6-2 - Overland Conveyor Cross Section and Cover ...... 40 Figure 6-3 - Ghost Bat Roosting Cave Proximity to C, D and G infrastructure...... 42 Figure 6-4 - Surplus water discharge wetting extent ...... 48

RTIO-HSE-0331347 Abbreviations

BWT Below Water Table DOEE Department of Environment and Energy DWER Department of Water and Environmental Regulation DMIRS Department of Mines, Industry Regulation and Safety EPA Environmental Protection Authority EPBC Environment Protection and Biodiversity Conservation EPAS EPA Services (branch of DWER) EP Act Environment (Protection) Act 1986 KNP Karijini National Park HSEQ Health, Safety, Environment and Quality Management System HVRF Heavy Vehicle Refuelling Facility MS Ministerial Statement PDWSA Public Drinking Water Source Area RT Rio Tinto ROM Run of Mine OWS Oily Water Separator SOP Saleable Ore Product

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1 Licensee Information

Occupier Details

The occupier (the Licensee) of the land subject to this works approval application is:

Robe River Mining Co. Pty Ltd Level 18, Central Park 152-158 St Georges Tce Perth WA 6000 ACN: 008 694 246

Robe River Mining Co. Pty Ltd (a wholly owned subsidiary of the Rio Tinto Group) is the authorised management company for the Robe River Iron Associates joint venture. Robe River Mining Co. Pty Ltd provides for the operation, maintenance and management of activities associated with West Angelas, and is hence the appropriate licensee.

The proposed works are being undertaken in the Shire of East Pilbara (Figure 2-1).

The contact person for the works approval is as follows:

Rebecca Evans Government Approvals Advisor Rio Tinto Level 12, Central Park 152-158 St Georges Terrace Perth WA 6000 Telephone: 0436 663 354 Email: [email protected]

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2 Premises Details

Prescribed Activity Overview

The licensee operates the West Angelas iron ore mine under Part V Licence L7774/2000/6, which has been assessed as a prescribed premise as it meets the requirements of categories 5, 6, 12, 52, 54, 64 and 73 under Schedule 1 of the Environmental protection Regulations 1987. The premises has been in operation since 2000.

This works approval application is for the proposed construction and commissioning of additional infrastructure including a new primary crusher, 10.2 km long conveyor, installation of a new discharge outlet, relocation of an existing discharge outlet (Deposit A outlet, as currently licenced under L7774/2000/6) and an additional inert waste dump at the West Angelas mine site. Included, for reference in this application is also information relating to the use of mobile crushing and screening infrastructure, a fuel storage facility and modifications to the existing Hub A infrastructure. Fuel storage required for the project (2 x 200 kL permanent tanks, 4 x 110 kL temporary tanks) does not meet the Category 73 threshold for licensing, so the category has not been included in this application. However, once construction is complete and the licence amended to enable operation, the Category 73 amount will be adjusted on existing L7774 as required.

This additional infrastructure is to support the new Deposit C, D and G Proposal for West Angelas (the Proposal) currently under review by the Environmental Protection Authority (EPA).

The proposed works approval premise boundary is provided in Figure 2-2. The existing prescribed premise boundary of L7774 will require amendment prior to operation.

In summary, this works approval application is for the following prescribed activities: • Category 5: 25,000,000 tpa • Category 6: 6,000,000 tpa • Category 12: 10,000,000 tpa • Category 64: 8,500 tpa Indicative locations of the above prescribed activities are included in Figure 2-3.

Legal Land Description

The infrastructure subject to this works approval application is to support the Proposal and is located on General Purpose Lease G47/01236 and AML70/248.

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Location and Siting

Location Context

The West Angelas Mine is located approximately 130 kilometres (km) northwest of Newman in the Pilbara region of Western Australia. The existing prescribed premise licenced under the West Angelas Iron Ore Part V Operating Licence L7774/2000/6 is presented in Figure 2-2, along with the proposed new works approval application boundary.

The proposed West Angelas works approval application boundary lies approximately 2 km to the east of the Karijini National Park (KNP), however the location of the proposed new primary crusher is approximately 8 km from KNP.

The West Angelas Project is situated within the Pilbara bioregion and the Hamersley subregion (IBRA 2012 in Ecologia 2013). The Hamersley subregion is characterised by mountainous areas of Proterozoic sedimentary ranges and plateaux, dissected by gorges.

Co-ordinates of the proposed infrastructure

Table 2-1 lists the approximate boundary coordinates of the proposed infrastructure subject to this works approval application. Table 2-1 Coordinates (MGA Zone 50) of proposed activities1

ID Easting (m) Northing (m) 670335.10 7437417.03 670263.13 7437199.44 670327.48 7437123.24 670605.75 7437039.02 670505.28 7436782.88 Primary Crusher 670252.97 7436862.47 670132.74 7436825.21 670064.16 7436699.48 669626.01 7436845.53 669920.23 7437573.67 670335.10 7437417.03

670532.48 7436234.16 680443.34 7436234.16 Conveyor 680443.34 7436889.94 670532.48 7436889.94 670532.48 7436234.16

678102.72 7436552.00 New C/D dewatering 678148.20 7436551.59 discharge Outlet 678148.44 7436485.96 678103.56 7436485.11 678102.72 7436552.00

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679400.30 7436373.58 Relocated Deposit A 679431.79 7436375.17 dewatering discharge 679432.32 7436347.38 outlet 679401.09 7436345.80 679400.30 7436373.58

673491.16 7437127.99 673611.06 7436982.39 Landfill (Waste Dump) 673530.84 7436916.32 673410.94 7437061.93 673491.16 7437127.99

670607.76 7437672.83 670776.81 7437704.60 Fuel Hub 670824.46 7437486.76 670654.28 7437449.32 670607.76 7437672.83

1 The mobile crushing and screening plant will have different locations within the proposed works approval prescribed boundary as required.

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Figure 2-1: Regional Setting for West Angelas Iron Ore Mine

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Figure 2-2: Existing West Angelas Project and proposed new prescribed premise boundary

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Figure 2-3: Indicative location of infrastructure

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Sensitive Land Uses

The distances to residential and sensitive receptors are detailed in Table 2-2. The closest residential area to the premises is the township of Newman, which had a population of 6,162 in 2014 (Australian Bureau of Statistics, 2016).

The existing Premises construction camp is approximately 1.3 km to the north-east of the proposed production hub and within the existing Prescribed Premises boundary. As this facility is operated by the Licence Holder the Premises Village will not be considered as a sensitive land use or receptor.

The closest sensitive land use outside of the Premises and not operated by the Licence holder is BHP Jocelyn Exploration Camp which is approximately 28 km north of the proposed works approval application boundary.

Table 2-2 Sensitive Land Uses and distance from application boundary

Sensitive Land Uses Distance from Prescribed Activity

Closest residential zoned premises: Newman Approximately 130km to the south-east of the (Zoned residential Shire of East Pilbara application boundary Planning Scheme No. 4)

Closest recreation zoned premises: Newman Approximately 100km to the south-east of the (Zoned recreation – Local Authority application boundary Reserve Shire of East Pilbara Planning Scheme No. 4)

Juna Downs Pastoral Lease L3114/1191 Approximately 30 km north west of the Homestead application boundary.

Approximately 28 km north of the application BHP Jocelyn Exploration Camp boundary

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Specified Ecosystems

The distances (within a 30km radius) to specified ecosystems are shown in Table 2-3. Table 2-3 Specified ecosystems Specified ecosystems Distance from Prescribed Activity Karijini National Park is located Parks and Wildlife tenure approximately 8 km west of the proposed primary processing plant Public Drinking Water Source Area There are no PDWSAs located within 30 km (PDWSA) of the premises

There are no RAMSAR wetlands within 30 RAMSAR wetland – Fortescue Marsh km of the premises

No geomorphic wetlands are located within a Geomorphic Wetlands 30km radius of the process plant

Threatened Ecological Communities West Angelas Cracking Clay PEC is (TEC) and Priority Ecological approximately 200 m east of the Deposit C Communities (PEC) and D Primary Crusher Facility.

There are no Declared Rare Flora within the Declared Rare Flora Premises.

Other environmental receptors

Environmental receptors relevant to the facility / activity are provided in Table 2-4. Table 2-4: Other landscape features, relevant factors or receptors

Other receptors or areas of concern Location The infrastructure is located in an area where Groundwater depth to groundwater is greater than 40m. Turee Creek east Approximately 1.7 km north of the proposed primary processing plant

Topography

The West Angelas Iron Ore mine is within the Pilbara and Gascoyne bioregions as defined by the Interim Biogeographic Regionalisation of Australia (Environment Australia, 2000). The West Angelas Iron Ore mine lies at the eastern end of the Hamersley subregion of the Pilbara Bioregion. The Hamersley subregion is described as mountainous areas of Proterozoic ranges and plateaux (Biota, 201a). Local topography is mainly low to moderate relief hills, ridges and scree slopes separated by Quaternary alluvial sheet-wash plains.

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Water Resources

West Angelas is situated within the Turee Creek East catchment, the wider Turee Creek regional catchment is approximately 7,400 km². Turee Creek, an ephemeral tributary of the Ashburton River, represents the most significant named watercourse in the region. The east branch of Turee Creek (Turee Creek East) flows generally westward across the West Angelas operation, continuing west south-westerly through the Karijini National Park, before merging with Turee Creek. Turee Creek East is an ephemeral watercourse which flows depending on the occurrence of high intensity rainfall events, typical of Pilbara watercourses.

Hydrogeology

The main structural feature of the West Angelas region is the regional, east-west trending Wonmunna Anticline. The Wonmunna Anticline hosts a series of discontinuous deposits; (from west to east) Deposits C, G, B and H are located along the northern limb while Deposits D, A, E and F are located along the southern limb.

The centre of the regional anticline contains a low-lying plateau of Jeerinah Formation (Fortescue Group). Groundwater levels in the central plateau are relatively shallow, ranging between 10 - 20m below ground level (bgl). The Jeerinah Formation is bounded to the north and south by valleys of Marra Mamba Iron Formation and overlying Wittenoom Formation (Hamersley Group, which hosts all of the banded iron formation derived iron ore deposits of the Hamersley Province). Groundwater levels are generally very deep ranging between 90 - 140m bgl. The valleys are bound by high ridges of Brockman Iron Formation.

The regional water table is relatively complex. Groundwater flow in the West Angelas area is characterised by steep hydraulic gradients across the Jeerinah Formation, representative of relatively low permeability on a regional scale and flat hydraulic gradients across the Mount Newman Member of the Marra Mamba Iron Formation and the overlying West Angelas Member of the Wittenoom Formation, with steep hydraulic gradients between deposits and within some deposits due to the presence of intrusive formations such as dykes and features such as folding and faulting. No major regional aquifer has been encountered to date.

Geology

The formations of the Hamersley Group that exist within the West Angelas region (in order of increasing age) are: • Brockman Iron Formation. • Mount McRae Shale. • Mount Sylvia Formation. • Wittenoom Formation, comprising: o Bee Gorge Member, and; o Paraburdoo Member; • West Angela Member. • Marra Mamba Iron Formation, comprising: o Mount Newman Member; o MacLeod Member; and o Nammuldi Member.

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Fauna

Previous biological surveys conducted throughout the region since 1979 have not recorded Threatened species and / or communities and as such, the West Angelas Project has not previously been referred to the Department of Environment and Energy (DoEE) under the requirements of the EPBC Act. Recent biological surveys have recorded evidence of several Threatened fauna species listed under the EPBC Act, including the following: • Pilbara Leaf‐nosed Bat (Rhinonicteris aurantia) – EPBC Vulnerable; • Ghost Bat (Macroderma gigas); • Fork‐tailed Swift (Apus pacificus) In addition, the following two threatened species have been assessed as having a moderate to high likelihood of occurrence in the region: • Northern Quoll (Dasyurus hallucatus) – EPBC Endangered, and; • Pilbara Olive Python (Liasis olivaceus barroni). These species were not recorded within the West Angelas region during the recent survey and have not been recorded during previous surveys. Based on these recent survey findings, the Licence Holder referred the Deposit C, D and G Proposal to the DoEE in September 2018 and the Delegate for the Minister for the Environment subsequently determined the Proposal to be a controlled action requiring assessment and approval under the EPBC Act.

Vegetation and Flora

Flora and Vegetation surveys have been undertaken across the West Angelas region since 1979, covering an area in excess of 61,600 ha. The combined coverage of these surveys has enabled a detailed understanding of the existing vegetation and a considerable reference for the distribution of species (including Threatened and Priority Flora) in the West Angelas region.

West Angelas is situated within the Pilbara bioregion as defined in the Interim Biogeographic Regionalisation of Australia (IBRA) Report (2012), West Angelas is situated within the Hamersley subregion.

West Angelas lies entirely within the Pilbara region of the Eremaean Botanical Province as defined by Beard (1975). The vegetation of this Province is typical of arid landscapes. According to Beard (1975), the predominant vegetation associations in the West Angelas region are: • low woodland; continuous Mulga Acacia aneura woodland communities over spinifex Triodia basedowii and Triodia epactia hummock grasslands on stony undulating plains; and • low scattered tree steppe; Snappy Gum Eucalyptus leucophloia over spinifex Triodia wiseana hummock grassland on stony undulating plains.

At a scale of 1:1,000,000 the vegetation units described by Beard (1975) within the West Angelas region are well represented elsewhere.

No flora listed under the under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act), or gazetted as Threatened (formerly Declared Rare

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Flora (DRF)) under the Western Australian Wildlife Conservation Act 1950 (WC Act) were recorded or are expected to occur within the project area.

No Threatened Ecological Communities (TECs) are known to occur in or adjacent to the West Angelas area and one Priority Ecological Community (PEC), the West Angelas Cracking Clay PEC is known to occur in and adjacent to the West Angelas area. The Proposal has been designed to avoid disturbance to a 230 ha representation of the West Angleas Cracking Clay PEC, which will be managed by the pending new Ministerial Statement (MS). However, disturbance to 15.5 ha of the cracking clay community (overlying Deposit D) and a further 4.5 ha of indirect disturbance will occur and be managed by the pending new MS.

Stakeholder and Community Consultation

Community Consultation

The Proponent initiated a stakeholder consultation program in November 2016 to inform the key stakeholders of the Deposit C, D and G Proposal and to enable stakeholder concerns and comments to be considered.

The objectives of the consultation program were to: • Identify key stakeholders; • Identify areas of stakeholder concern relating to environmental and social values; • Assess stakeholder concerns so that potential impacts to environmental and social values as a result of this Proposal are minimised to as low as reasonably practicable; and • Establish collaborative relationships with stakeholders to assist with managing Proposal related expectations.

The Licensee has a long-term commitment to working with Pilbara communities and recognises that local communities have a direct interest in their activities.

Substantial stakeholder consultation and public review of mining activities at West Angelas has occurred historically, as part of environmental approval processes for the existing mine operations. The licensee has sought to keep relevant stakeholders up-to-date with studies relating to future mining activities in the area.

Aboriginal Heritage

West Angelas Deposits C and D Project area is located within the traditional lands of the Yinhawangka People. The identification and management of cultural heritage within the traditional lands of the Yinhawangka People is in accordance with the principles and practices outlined within Rio Tinto’s Communities and Social Performance Guidelines, the Rio Tinto Cultural Heritage Group Procedure, and the heritage protocol within the Yinhawangka People Claim Wide Participation Agreement (CWPA). To date, extensive archaeological and ethnographic heritage surveys have been conducted in consultation with the Yinhawangka people resulting in the identification of a number of heritage sites within the West Angelas C and D Project area. Where heritage sites are

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unable to be avoided, consent under section 18 of the Aboriginal Heritage Act 1972 (WA) will be required from the Minister for Aboriginal Affairs, which will be obtained prior to any ground disturbance in the relevant area.

3 Prescribed Premises Category

The proposed facilities are considered to be an activity defined by Schedule 1 of the Environmental Protection Regulations 1987 (as amended) and detailed below in Table 3-1.

Department of Water and Environmental Regulation (DWER) have advised during project scoping discussions that the infrastructure associated with the C, D and G Proposal should be constructed and commissioned under a works approval, followed by an amendment to existing operating licence L7774/2000/6 (West Angelas Iron Ore Mine) to allow operation of the infrastructure. Table 3-1 Proposed Prescribed Premises categories

Category Category Category Premises Production or number Description Design Capacity 5 Processing or >50,000 tonnes per Proposed new infrastructure: beneficiation of year metallic or non- 25,000,000 tonnes per annum metallic ore *35,000,000 tonnes per annum 6 Mine dewatering 50,000 tonnes or more Additional dewatering: per year 6,000,000 tonnes per annum

*12,000,000 12 Screening, etc. of 50,000 tonnes or more 10,000,000 tonnes per annum material per year *10,000,000 tonnes per annum 64 Class II putrescible 20 tonnes or more per Additional waste: 8,500 landfill year tonnes per annual period site * 20,000 tonnes per annum * Total amount for Premises Production / Design Capacity after L7774/2000/6 is amended to incorporate proposed additional infrastructure (inclusive of the recent Licence Amendment submitted 5th December 2018).

As mentioned previously, fuel storage required for the project (2 x 200 kL permanent tanks, 4 x 110 kL temporary tanks) does not meet the Category 73 threshold for licensing, so the category has not been included in this application. However, once construction is complete and the licence amended to enable operation, the Category 73 amount will be adjusted on existing L7774 as required.

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Current Environmental Protection Act 1986 (Part V) Licences / Works Approvals

The Licensee currently holds Part V Operating Licence L7774/2000/6 (expiry date 28 May 2029), with categories shown in Table 3-2.

Once works for the additional infrastructure supporting the Proposal are completed, this licence will be amended to include the operation of the new primary crusher and overland conveyor (Category 5 and 12), additional discharge point (Category 6) and additional landfill (Category 64).

Table 3-2 Prescribed premises category details under Part V licence L7774/2000/6 (not inclusive of the recent Licence Amendment submitted 5th December 2018).

Category Category Description Category Premises Production or number Design Capacity 5 Processing or 50,000 tonnes or more 35,000,000 tonnes per beneficiation of metallic or per year annual period non-metallic ore 6 Mine dewatering 50,000 tonnes or more 6,000,000 tonnes per annual per year period 12 Screening, etc. of material 50,000 tonnes or more 10,000,000 tonnes or more per year per annual period 52 Electrical power 10 MW or more aggregate 90 MW generation 54 Sewage facility 100 cubic metres or more 610 cubic metres per day per day 64 Class II putrescible landfill 20 tonnes or more per 11,500 tonnes per annual site year period

Other Approvals / Licences

Part IV of the Environmental Protection Act 1986

The original West Angelas proposal, which included the development of Deposits A and B, was approved under Part IV of the Environment Protection Act 1986 (EP Act) subject to conditions of Ministerial Statement 514 (MS 514) on 28 June 1999. Productive mining commenced at West Angelas in 2002. The Proposal to include the development of Deposit E and contemporise conditions of MS 514 under s46 of the EP Act, was approved via MS 970, on 11 June 2014. The subsequent West Angelas Deposit A west and F proposal was approved on 21 August 2015 as an amendment to MS 970 and is also subject to the additional conditions of MS 1015. The Licence Holder referred a proposal to the EPA on 20 July 2017 to include Deposits C, D and G. The proposal includes the development and operation of additional open pit iron ore mining areas and associated infrastructure (Deposit C and D infrastructure included in this application) at the Premises. Subject to approval of the new Proposal, the Proponent has

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requested a new Ministerial Statement is issued that will supersede the existing Ministerial Statements 970 and 1015. The Licence Holder has also prepared an updated West Angelas Environmental Management Plan (EMP) to support the assessment of the Deposit C, D, and G Proposal. The updated EMP will be implemented across the West Angelas Project and includes commitments relevant to this application, including the monitoring of: • Monthly permanent surface water flow at established monitoring points along the proposed surface water discharge extent. • Annual condition, cover and health of riparian vegetation within the observed (or predicted) surface water discharge extent. This updated Environmental Management Plan will be implemented, subject to approval, and will supersede the existing approved Environmental Management Plan. The Proposal also committed to the surface discharge extent not extending as far as 2 km from Karijini National Park under natural no-flow conditions. Schedule 1 of the proposed new Ministerial Statement is likely to also include that the surface discharge extent will not extend within the boundary of Karijini National Park under natural no-flow conditions.

Rights in Water and Irrigation Act 1914

The following existing Licences to Take Groundwater have been issued under the Rights in Water and Irrigation Act 1914:

• Groundwater Licence GWL98740 for abstraction of 5,380,000 kL from the mine for dewatering and water supply purposes; and • Groundwater Licence GWL103136 for abstraction of 3,102,500 kL from the Turee B Borefield for water supply purposes.

GWL98740 will be amended and assessed by DWER-Water for an increase to the abstraction from 5,380,000 kL to 14,000,000 kL as part of the C, D and G Proposal. Groundwater abstraction and quality will continue to be managed in accordance with the existing Groundwater Licences and associated Groundwater Operating Strategy, and any amendments as required.

State Agreement and Mining Act 1978

The West Angelas Project is located on Mineral Lease 248SA (ML248SA) which was granted in 1976 under the Iron Ore (Robe River) Agreement Act 1964 (WA) (Robe River State Agreement).

An additional State Agreement approval was obtained 29th November 2018 for the Stage 1 works occurring at West Angelas, including the infrastructure applied for via the Licence Amendment L7774/2000/6 submitted on the 5th December to DWER.

A new State Agreement approval is required for the construction of infrastructure included within this application and which forms part of the C, D and G Part IV Proposal (Stage 2 works). This is being progressed via the Department of Jobs, Tourism, Science and Innovation.

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The General Purpose Lease G47/1236 has been granted under the Mining Act 1978 (WA) (Mining Act) in accordance with the Robe River State Agreement.

4 Process Description

Project Overview

The West Angelas mine produces 35Mtpa of Saleable Ore Product (SOP). Production commenced in 2002 primarily from Deposit A, and more recently, mining has commenced from Deposits E, B, and F, with Deposits C, D and G identified as suitable ore sources for development to sustain current production levels. West Angelas Deposits C and D are located approximately 12km to the west of the existing West Angelas processing plant, stockyards and rail loop, which is located to the north of Deposit A and is known as Hub A. Deposit G is approximately 7 km north-north-west from the Deposit A crusher and will be processed via the existing facility. Deposits C, D and G are planned to produce up to 25Mtpa for additional processing / train load out at Hub A.

Inputs to the new processing plant include iron ore, diesel fuel, electrical power and process water (obtained from a licenced groundwater source). Outputs include iron ore product (lump and fines), noise, dust, light and greenhouse gas emissions.

Construction of the West Angeles C and D infrastructure is expected to commence in Quarter 2, 2019 and be completed in Quarter 1, 2021. “No Load” Commissioning is expected to commence in Quarter 4, 2020. Construction of Deposit G infrastructure (no prescribed activities as defined by Schedule 1 of the Environmental Protection Regulations 1987) is also planned to commence in 2019 and be completed in 2021 / 2022.

The key purposes of the West Angelas Deposit C, D and G works are:

• To provide a primary crushing facility at Deposits C and D that is capable of achieving a capacity of 25Mtpa; • To deliver an overland conveying solution from Deposits C and D that can achieve a nameplate capacity of at least 35Mtpa Saleable Ore Product (SOP); • To modify the existing process plant at Hub A to handle up to 35Mtpa without the need to use the contract crushing and screening plant that is currently in operation at West Angelas; and • Associated works to support the above including fuel storage, dewatering, waste dump landfill, crushing and screening mobile plant, light vehicle roads, haul roads, power, water and non-processing infrastructure.

These works will not change the overall annual capacity of the West Angelas site (35mtpa).

New Facilities at Deposit C and D and Deposit A:

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• ROM pad, including access ramps suitable for haul trucks, and a mechanically stabilised earth wall at the interface to the ROM bin. A single tipping point and ROM bin; • Fixed primary crushing facility at Deposit C and D, including a static grizzly, ROM bin, apron feeder, vibrating grizzly, jaw crusher, two rock breakers, dust collector, and discharge conveyor; • 10.2km overland conveyor to transport the primary crushed ore from Deposit C and D primary crushing facility to the existing plant at Hub A; • A surge bin facility at Deposit A to allow ore to be split between conveyors; • New water discharge outlet for dewatering water from Deposits C and D (Figure 4-5). • Minor relocation (300m downstream) of the existing discharge outlet at Deposit A (Figure 4-5); • New fuel facility at Deposits C and D, including 2 x 200kL tanks, dispensing equipment for re-fuelling heavy vehicles, overland pipeline for fuel delivery, back up unloading facility for road tankers, and associated oily water treatment facility; • New inert waste dump landfill at Deposit C and D.

Modification to the existing facilities at Hub A processing plant:

• Modification to existing plant conveyors, and • Modification to secondary crusher facility, including replacement of the vibrating feeders, and replacement of the two secondary crushers with larger secondary crushers.

An overall site layout is provided in Appendix 1, Figures A – G and a Process Flow Diagram is shown in Figure A. Section 4 of this document provides an overview of the infrastructure proposed for construction, section 5 presents the risk assessment and Section 6 provides details on the environmental controls within the design.

Facility Layout and Process Flow

The following drawings provided in Appendix 1 show the overall site layout, the process flow diagram and the facilities subject to this works approval application.

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• Figure M WA-1890-Y-00002 – ROM Ore Loadout • Figure N WA-1910-G-00018 – Production Hub, General Arrangement • Figure O WA-1960-P00001 – Bulk Fuel Process Flow • Figure P WA-1960-P00002 – Bulk Fuel Process Flow • Figure Q WA-1910-Y-00010 – Deposit C Park Up Area, General Arrangement • Figure R WA-1910-Y-00015 – Deposit D Park Up Bulk Earthworks, General Arrangement • Figure S W113-C-00049 - Crusher and Surge Bin Works, Earthworks and Drainage • Figure T WA-2150-M-00070 - Surge Bin Facility, General Arrangements • Figure U K-WADCD-IMP-C-010 – New discharge outlet • Figure V WA-1580-Y-00001 – Relocated surplus dewatering discharge plan • Figure W WA-1580 – 00002 - Relocated surplus dewatering discharge sections and details

Design and Operation

Primary Crushing Facility

The process design criteria are based on constructing a primary crushing facility at Deposit C and D with a capacity of 25 Mtpa. The five key elements in being able to achieve the stated capacities are: • Primary jaw crusher capacity; • Overland conveyor capacity; • ROM Pad/ROM bin presentation capacity; • Apron feeder capacity; and • Vibrating grizzly capacity;

The primary crushing facility includes a single tip point suitable for haul trucks with a maximum payload of 315 tonnes, a ROM bin, static grizzly, apron feeder, vibrating grizzly feeder and jaw crusher to produce primary crushed ore with a 300mm top size particle. The primary crushing facility delivers ore onto a discharge conveyor which will then deliver the ore onto the new Deposit C and D overland conveyor. The primary crushing facility is shown below in Figure 4-1 and in more detail in Appendix 1, Figures H, I and J.

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Figure 4-1 – Primary Crushing Facility with highlighted dust extraction layout

Overland Conveyor

The overland conveyor is 10.2km long and 1500mm wide, which will convey crushed ore from the primary crushing facility at Deposit C and D to the processing plant at Hub A. The overland conveyor is fully enclosed for 97 % of its overall length and has been designed to convey primary crushed ore at a minimum rate of 25Mtpa. Detail of the overland conveyor design is included in Appendix 1, Figures K and L.

ROM Pad

The ROM Pad is located centrally to the Deposits C and D, providing access to the primary crushing facility. The ROM Pad is designed to accommodate all ore movement activities being undertaken by haul trucks, including: • delivery of ore to the ROM bin/ primary crusher direct from pits, or from stockpiles either on, or external to the ROM Pad; • delivery of ore to the ROM pad stockpiles (paddock dump for lower levels, and tipping from Skyway for upper levels); and • Reclaiming of ore from the ROM pad stockpiles via front end loader operation, and delivery of ore to the ROM Pad. Haul trucks will dump directly into the ROM Bin, through a static grizzly, with longitudinal members at 1200mm centres. The ROM pad, ROM bin and primary Crushing Facility have been designed to achieve a capacity of 25Mtpa. Refer to Appendix 1, Figure M for general arrangement of ROM ore load out.

Apron Feeder and Vibrating Grizzly Capacity

The ROM bin apron feeder has been specified to achieve a capacity of 25 Mtpa. The vibrating grizzly has been sized with apertures of 160 mm and is capable of achieving a capacity of 25 Mtpa.

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Surge Bin Facility

A new surge bin facility will be constructed at the existing processing plant at Deposit A. The facility has a common bin, with two outlets. This provides two independent ore streams, to allow ore to be transferred, in variable amounts, to two existing conveyors. Each ore stream has a dedicated isolation gate. Shuttling apron feeders are provided which will allow each apron feeder to move when required. Dust control for the surge bin facility is provided via insertable dust collectors mounted on the bin roof. The base level has a concrete slab under the entire footprint of the facility, to capture spillage and facilitate washdown. The slab is graded to drain to a concrete sump. The sump has ramp to allow for clean out of settled solids, via front end loader. Water is discharged from the sump into the existing surface water drainage system at Hub A. Figure 4-2 shows the modelled surge bin facility and head end of the new overland conveyor (C062) from Deposit C and D. Additional detail is included in Appendix 1, Figure T.

Figure 4-2 - Deposit A Surge-Bin Facility Indicative Model

Secondary Crushing Facility

The Hub A secondary crushing facility will have its two existing crushers replaced with larger capacity crushers. This change is a key aspect of the upgrade to allow the permanent processing plant to process the site’s entire throughput. At present, approximately 1/3 of the annual throughput is primary and secondary crushed via contracted, relocatable crushing / screening systems. As these systems are being removed, the crushing activities which they currently perform will then be undertaken in the permanent plant with in-built dust control measures. The secondary crushing facility retains its existing dust control measures, including dry baghouse dust collector. The secondary crushing facility will only be required to operate at its new nameplate capacity (3,200tph) when handling the coarse type ore.

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Heavy Vehicle Refuelling Facility

The heavy vehicle refuelling facility (HVRF) is located to the north of the Deposit C and D primary crushing facility (Appendix 1, Figure N).

The following infrastructure is located at HVRF: • 2 x 200 kL bulk fuel storage tanks and pump station; • Road train unloading infrastructure, as a back-up supply to the HVRF, capable of accepting triple road trains; • Heavy vehicle refuelling bays and associated bunds as per Australian Standard 1940 - The storage and handling of flammable and combustible liquids (AS 1940); and • Oily water collection and treatment.

The facility provides two separate refuelling bays which support Deposits C and D mining fleet of heavy vehicles. The refuelling bays are designed to accommodate haul trucks and the nominated heavy ancillary support vehicles including water carts, service trucks and graders.

Diesel fuel will be stored at the HVRF in 2 x 200kL horizontal bulk fuel storage tanks. The tanks will be self-bunded (double skinned) and include appurtenances such as breathers, vents, over-fill protection, level gauges, diffusers, access hatches, dipsticks, and water drain points. Inspection platforms and stairways will be provided to access the tops of the tanks. Pneumatically actuated ball valves will be installed on the supply lines to the tanks for overfill protection.

The tanks will be designed, constructed and tested to Australian Standard AS 1940 and AS 1692 and DMIRS licensing requirements. All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940. Vehicle refuelling will occur over concrete hardstand area with associated sump and oily water separator system (see the following sub-section).

A secondary containment bund will be installed at the aperture where both the road train unloading pumps and heavy vehicle fill pumps are located. Automatic cut off valves are located at the tanks with dry break couplings at the heavy mobile equipment dispenser. Refer to Appendix 1, Figures O and P. Figure 4-3 below shows the HVRF conceptual general arrangement.

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Figure 4-3 - Heavy Vehicle Refuelling Facility General Conceptual

Oily Water Collection Concrete collection slabs will be installed under all areas at the HVRF where there is the potential for hydrocarbons to be spilled. The slabs will drain into oily water collection sumps before being treated at an Oily Water Separator (OWS). At Bay 2, the heavy vehicle refuelling pad, pump station bunded area and road tanker unloading slab will drain into a drive-in collection sump. Water from the drive-in sump will overflow into a pump pit. A low shear helical rotor pump will transfer the oily water at a rate of 10 L/s from the Bay 2 pump pit to the OWS drive-in sump located at Bay 1. Steel oily water piping will run above ground between Bay 2 and Bay 1 around the perimeter of the HVRF facility. The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump.

The drive-in sumps at both Bay 1 and Bay 2 will be wide enough to accept a front end loader. A drying pad adjacent to the sump entrance will allow hydrocarbon contaminated solids removed from the sumps to dry before being disposed of. Kerbed open-topped spoon drains will be used to connect the collection slabs to the drive-in sumps. This configuration will assist operators with hosing accumulated solids into the drive-in sumps. The OWS will incorporate a spill recovery system to separate fuel in the case of larger spills to a maximum size. Larger incidents will cause the system to shut down, preventing the OWS operating outside acceptable parameters, refer to Appendix 1, Figures O and P.

Road Tanker Unloading A road tanker unloading facility will be provided at the HVRF as a back-up fuel supply should fuel not be able to be delivered via the overland pipeline. The unloading facility will be capable of accepting triple road tankers but will unload a single tanker at a time. The tankers will be unloaded on top of a concrete apron slab which will drain into the adjacent HVRF pump station bunded area which is connected to the oily water collection and treatment system. Two tanker unloading pumps, in a duty/stand-by arrangement, will unload the tankers. The pumps will be located within the HVRF pump station bund. The fuel will be

RTIO-HSE-0331347 metered before entering the HVRF fuel storage tanks, refer to Appendix 1, Figures N, O and P.

Temporary Bulk Fuel Temporary fuel facilities will be required to support construction of the C, D and G Project. The first of these will be located at the West Angeles C and D construction camp and will comprise of four diesel storage tanks with 110kL storage capacity each (see Figure 4-4). This facility was included in the dangerous goods licence amendment by DWER on January 18, 2019. An additional two temporary diesel tanks with 110kL of diesel storage capacity each will be located at the Deposit C Park up area, and/or Deposit D, located adjacent to each deposit (refer Appendix 1, Figures Q and R).

Figure 4-4- Temporary Camp Bulk Diesel Storage

Dewatering discharge outlets

West Angelas has historically been considered a water neutral site, whereby operational water demand is roughly equivalent to dewatering requirements. As above water table (AWT) ore resources are depleted and below water table (BWT) resources are developed, dewatering volumes are expected to exceed demand.

To ensure effective management of dewatering and operational demand volumes, water sources across West Angelas have historically been integrated. West Angelas’ integrated water management strategy is aligned with the Department of Water ‘Western Australian water in mining guideline’ (2013) which identifies options for use and / or release of dewatering discharge.

Currently, dewatering water is used onsite in the first instance whenever possible to supply water to meet operational water demand. Surplus dewatering water, exceeding the operational water demand, is discharged via an existing discharge point to the Turee Creek

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East tributary under existing Licence L7774. This licence authorises discharge of up to 6 GL/a through the existing discharge outlet (refer Figure 4-6) which flows into the Turee Creek East tributary. To ensure effective management of dewatering and operational demand volumes at future operations, the integrated water management strategy will continue to be implemented.

The Proponent has conservatively assumed the cumulative balance of surplus dewatering water from West Angelas site requiring management is up to approximately 12 GL/a. Based on discharge of up to 12 GL/a, the maximum surface discharge extent is modelled to extend no more than 2kms from Karijini National Park under natural no-flow conditions. The modelled surface flow extent for discharge scenarios involving the new Deposit C & D dewatering discharge point, relocated Deposit A discharge point and the existing Deposit B discharge point are outlined in Table 4-2.

Table 4-2 Modelled discharge extent from discharge locations Surface Flow Extent Discharge Surplus Volume from KNP Boundary Scenario (km) Dep C/ D Discharge – 16 ML/day 1 2.2 Dep B Discharge – 16 ML/day Dep C/D/A Discharge – 20 ML/day 2 3.6 Dep B Discharge – 4 ML/day

Based on the results of numerical groundwater modelling and water balance calculations it is currently estimated that up to approximately 6.7GL of groundwater will need to be discharged annually to allow below water table mining from Deposits C and D. However the 12GL/a discharge allowance subject to this application is sufficient for dewatering purposes as dewatering from the existing outlet is expected to remain within licence limits. Groundwater abstraction will continue to be managed under the existing Groundwater Licence GWL98740 and the associated Groundwater Operating Strategy, and any amendments as required.

Water balances have been developed for Deposits C, D and G to understand water supply and demand requirements and potential surplus dewatering water management. Up to approximately 30% of the Deposit C resource and 50% of the Deposit D resource is below the water table and will, therefore, require dewatering to enable mining below the water table.

Turee Creek East has been subject to discharge of up to 6 GL/a of surplus dewatering water from existing operations since 2011. Surplus dewatering water discharged to the Turee Creek East tributary at an approximately constant rate will flow along the surface of the creek until the inflow (surplus water discharge) is balanced by outflow (infiltration and evaporative), defined as the maximum surface discharge extent.

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Existing Discharge Point The existing Deposit A discharge point clashes with a new haul road adjacent to the new Deposit C and D overland conveyor and therefore must be relocated to a new location that is approximately 300m downstream (refer Figure 4-5). The relocated discharge outlet will make use of existing infrastructure in the area including an existing pipeline and cleared alignment. Dewatering water will be pumped via the existing pipeline alignment, which will be situated at the bed level of the diversion channel. A flow meter will be installed near the outlet to record monthly discharge volumes and a water quality sampling site will be established at the discharge point. Water from the turkey’s nest is currently used for dust suppression, a manual control valve will be installed to maintain water levels in the turkey’s nest, and reduce the volume of water discharged to the diversion channel and ultimately the downstream creek system. To manage erosion and scour the discharge point includes a concrete stilling well and weir system leading to a rip rap lined ramp to the rip rap lined creek bed refer Appendix 1, Figure V and W.

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Figure 4-5 - Dewatering Discharge Outlet Locations

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New discharge point The new discharge point will receive surplus Deposit C and D dewatering water from the turkeys nest located at the deposit C and D production hub via a pipeline route adjacent to the overland conveyor, refer Figure 4-6.

Figure 4-6 - Pipeline route to new discharge point

A flow meter will be installed at the outlet of the turkeys nest to record monthly discharge volumes and a water quality sampling site will be established at the discharge point. Water from the turkey’s nest will be used for dust suppression and process plant purposes, a manual control valve will be installed to maintain water levels in the turkey’s nest, and reduce the volume of water discharged to the diversion channel and ultimately the downstream creek system. All surplus water will be delivered to the new discharge point at a maximum rate of discharge is 300l/sec. To manage erosion and scour the discharge point includes a concrete stilling well and weir system leading to a rip rap lined ramp to the rip rap lined creek bed refer Appendix 1, Figure U.

Waste Dump Landfill

A new West Angeles Deposit C, D inert waste dump landfill is required for burial of up to 8,500 of waste. It will be located within the West Angeles Iron Ore Mine General Purpose Lease G47/01236 or AML70/248. The ultimate location of the landfill has not been finalised however the current indicative location is depicted in Table 2-1. Additional detail relating to the proposed site selection and design criteria for the waste dump landfill is included in section 6.9.

Temporary Mobile Crushing and Screening Plant

As part of the Proposal construction, suitable material is required to be sourced from adjacent borrow pits. A portion of this borrow material will be processed through a mobile crushing and/ or a mobile screening plant. The mobile crushing and screening plants will be located within the works approval prescribed premises in areas previously cleared for the sourcing of borrow material, so no additional clearing will be required. As borrow material used in the crushing and screening plant is exhausted, the mobile plant will be transported to the next cleared borrow pit area

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within the works approval prescribed premises. This process will continue as required throughout the duration of construction works. The mobile crushing plant works by placing material into the feed hopper via an excavator of front end loader. The plant is preconfigured for use so the only modification required during commissioning are the setting of the crusher aperture to deliver product of the required size, and testing of dust suppression systems. The target particle size (screen setting) is approximately 40mm. Product material is stockpiled for transport to the relevant construction site.

Timescale for Construction / Operation

Based on the current schedule it is expected that construction of the mine processing plant will begin in Quarter 2, 2019 will be completed in Quarter 1, 2021. The facility is expected to be operational for approximately 30 years.

Once construction of the processing plant is completed and prior to load commissioning, a compliance document detailing compliance with commitments made in this works approval application will be submitted to DWER as per the works approval conditions.

At the completion of construction work for the processing plant, the mobile facilities (or similar) may be required for other purposes, for example, to provide stemming for blasting purposes.

Commissioning and Reporting

When the construction of the Deposit C and D primary crusher is completed commissioning activities will begin Quarter 3 2020 and are expected to be completed by approximately May 2021. In general, commissioning will be carried out in five stages: • Stage 1: Construction Verification – verify construction completion to design intent. • Stage 2: Pre-commissioning – functional testing of energised equipment. • Stage 3: No-load Commissioning – dynamic testing of operating systems without process materials. • Stage 4: Load Commissioning – running the facilities with feedstock and incremental load tuning. Note during this phase the plant will be running under operational conditions and hence the risk of emissions and means of mitigation are almost identical. • Stage 5: Performance Verification – ramp up production rate and confirm achievement of designed through-put. The licence holder seeks to undertake all stages of the commissioning under the works approval, with Stages 1 to 3, including first fill of all lubricants and running of all process plant equipment (including conveyors, feeders, crushers) undertaken prior to submitting a compliance document and application for a licence amendment. Commissioning Stages 1-3 will occur for various facilities and items of equipment from quarter 3 2020 and take up to six months. Upon submission of the compliance document following Stage 3, the licensee will undertake Stages 4 and 5, load commissioning (i.e. ‘wet commissioning’) and performance verification

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5 Risk Identification and Assessment

A risk assessment has been prepared to consider the risks of the construction and ongoing operation of the proposed activities. The risk assessment has been based on the DWER Guidance Statement: Risk Assessments (released by the then named Department of Environmental Regulation in 2017) and the Rio Tinto risk assessment process.

Table 5-1 below outlines the potential emissions, receptors and pathways that have been identified for the construction, commissioning and operation of the proposed activities. The table also identifies the potential impacts, proposed controls and associated risk ratings which have been identified to undergo a detailed risk assessment. The detailed risk assessment includes:

• A description of the emission source, pathways and receptor. • Any controls that have been identified for the risk event. • An assessment of the consequence and likelihood. • Risk rating. Table 5-1 Risk Rating Matrix

Likelihood Consequence Slight Minor Moderate Major Severe Almost certain Medium High High Extreme Extreme Likely Medium Medium High High Extreme Possible Low Medium Medium High Extreme Unlikely Low Medium Medium Medium High Rare Low Low Medium Medium High

Risk = consequence x likelihood

The following criteria (DWER 2017) are used to determine the consequence and likelihood of a risk event occurring (Table 5-2 and Table 5-3). Table 5-2 Consequence Matrix Consequence Consequence description

Environment Health

on-site impacts: catastrophic Loss of life off-site impacts (local scale): high level Adverse health effects: high level or off-site impacts (wider scale): mid level Severe ongoing medical treatment Mid to long term or permanent impact to an Local scale impacts: permanent loss of area of high conservation value or special amenity significance

on-site impacts: high level Adverse health effects: mid-level or off-site impacts (local scale): mid level frequent medical treatment Major off-site impacts (wider scale): low level Local scale impacts: high level impact to Short term impact to an area of high amenity conservation value or special significance

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Consequence Consequence description

Environment Health

on-site impacts: mid level Adverse health effects: low level or occasional medical treatment Moderate off-site impacts local scale: low level Local scale impacts: mid-level impact to off-site impacts wider scale: minimal amenity

on-site impacts: low level off-site impacts (local scale): minimal Local scale impacts: low level impact to Minor off-site impacts (wider scale): not amenity detectable

Local scale impacts: minimal impacts to Slight on-site impacts: minimal amenity

Table 5-3 Likelihood Matrix

Likelihood Likelihood description

Almost certain The risk event is expected to occur in most circumstances.

Likely The risk event will probably occur in most circumstances.

Possible The risk event could occur at some time.

Unlikely The risk event will probably not occur in most circumstances.

Rare The risk event may only occur in exceptional circumstances.

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Table 5-4 Potential emissions, receptors and pathways subject to this application.

Source Detailed Residual Risk Activity Potential emission Pathway Potential receptors Potential impacts Overview of Proposed controls Consequence Likelihood Assessment Rating Required?

Priority Ecological Communities (PECs) are known to occur on cracking clay habitats 200 m east of the Deposit C and D Primary Dust impacts on surrounding Crusher Facility. vegetation. • Dust suppression (water sprays, water trucks, control of vehicle movements / restricted speeds). Detailed Karijini National Park is • Site clearing and rehabilitation will be managed to ensure assessment Dust Air (windborne) ~ 12 km west of the Health and amenity: None, Minor Unlikely Medium that areas are only cleared as required and progressive provided in prescribed premise given the distance to the rehabilitation is implemented as construction activities are Section 6.1 boundary and nearest nearest receptor. human receptor is BHP completed.

Jocelyn Camp ~ 24 km north. Vegetation including vegetation adjacent to mining areas

Nocturnal native fauna, Noise / Vibration impacts on Environmental Protection (Noise) Regulations 1997 including the Ghost Bat fauna habitat, including • Requiring contractors to comply with the Environmental No, managed by potential roosting sites for Protection (Noise) Regulations 1997. MS 970 and 1015. bats. However, further Noise Air (windborne) Residential: None, the • Construction works must be carried out in accordance Moderate Possible Medium nearest receptors are with Section 6 of Australian Standard 2436-1981 “Guide detail on controls the West Angelas Health and amenity: None, to Noise control on Construction, Maintenance and provided in Construction of primary Village, offices and given the distance to the Demolition Sites” and the Environmental Protection Section 6.2 crushing facility and Category 5: mining operations. nearest receptor (Noise) Regulations 1997 (WA) Processing of overland conveyor • ore Lighting limited to the minimum required to maintain site Risk pathway is safety and security. Construction of new ROM low, detailed • Directional lighting will be used to minimise stray light assessment is not Category 12: ore load out Nocturnal native fauna, Disruption in Ghost Bat emission. required. Screening of Light Air Minor Rare Low including the Ghost Bat roosting patterns • However, further Material Modification to existing A For night construction portable light towers and other sources will not be used at night within 500m of known detail on controls Hub plant Ghost Bat nesting caves provided in

Section 6.4

Risk pathway is No permanent surface low, detailed water within the vicinity. • No planned discharge of water from site assessment is not No pathway to surface • Diversion of clean surface water around work areas required. Water waters due to site bunding Minor Rare Low Ephemeral Turee Creek and surface water diversion. • Potentially contaminated waters retained onsite via bunds or However, further East ~ 1.7km km from surface diversions detail on controls infrastructure provided in Section 6.5 Implementation of the CEMP

• Diversion of clean surface water around work areas Discharge of washwater Terrestrial ecosystems: • Mobile crushing and screening plants will be located or process water Priority Ecological within existing cleared borrow pit areas so that any dust potentially hydrocarbon Communities (PECs) are Potential contamination of laden water is retained within the confines of the borrow contaminated or / known to occur on pit. soil and groundwater due to sediment laden cracking clay habitats Detailed presence of iron, • Potentially polluting substances, including hydrocarbons 200 m east of the assessment Land hydrocarbons and chemicals and other chemicals, shall be stored in secondarily Minor Possible Medium Deposit C and D Primary provided in within stormwater, leaks and contained bunds/areas to prevent unintentional discharge Crusher Facility and to the environment. Section 6.6 adjacent to overland spills, impacting end • Approval process prior to mobilising any chemicals to conveyor. beneficial use site.

• No permitted release of any potentially contaminated site Groundwater >40mbgl water that has not been tested for hydrocarbon contaminants. • Clearing of slopes leading to watercourses shall be

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delayed until construction of the crossing is imminent to minimise erosion, where practicable. Bank stabilisation works shall be undertaken at those locations. • Equipment servicing shall take place in designated workshop areas. • Where practicable, construction of watercourse crossings shall be scheduled from early April to late November (Pilbara dry season). Methodology must be approved by the Project Environmental Advisor • Dust suppression on trafficable areas including water sprays, water trucks, control of vehicle movements / restricted speeds. • ROM dump hopper dust suppression through high pressure water fogging combined with a water spray curtain system at the ROM feed hopper and coarse ore Priority Ecological stockpile. Communities (PECs) are • One Primary crushing Facility baghouse dust collection known to occur on system and two Surge bin facility insertable dust cracking clay habitats collectors. 200 m east of the Dust impacts on surrounding • Sprays on conveyor transfer points. Deposit C and D Primary vegetation, including • Overland conveyor provided with a dedicated conveyor Detailed Crusher Facility and reduced ability for cover. assessment Air (windborne) adjacent to overland photosynthesis due to • Rehabilitation of disturbed areas. provided in Dust conveyor. Moderate Unlikely Medium smothering • Sprinkler systems (or any other approved dust Section 6.1 Karijini National Park is Health and amenity: None, suppression methods) shall be incorporated within the ~ 12 km west of the given the distance to the material acceptance, processing and storage areas of prescribed premise nearest receptor mobile crushing and screening operations. boundary. • The mobile jaw and impact crusher will have a sprinkler Operation of primary Vegetation including system installed over the hopper, end of the conveyor, crushing facility and vegetation adjacent to and any other discharge points of the plant. overland conveyor mining areas • Materials shall be dampened prior to processing via the mobile crushing and screening plant. Operation of new ROM ore • All waste materials not used in the crushing and load out screening process shall be stockpiled in approved areas.

Operation of mobile crushing Nocturnal native fauna, Noise / Vibration impacts on No, managed by and screening plant including the Ghost Bat fauna habitat, including • Requiring contractors to comply with the Environmental MS 970 and 1015. Protection (Noise) Regulations 1997. Residential: None, the potential roosting sites for Operation of modified A Hub Noise Air (windborne) nearest receptors are bats • Managing blasting as per the Part IV Environmental Moderate Possible Medium plant the West Angelas Health and amenity: None, Management Plan which sets limits for vibration. Refer to section 6.2 Village, offices and given the distance to the

mining operations. nearest receptor • Plant lighting design will comply with Rio Tinto and Risk pathway is Australian standards for safe work. low, detailed • Lighting design will ensure light is directed to work areas assessment is not and minimal light spill occurs. required. Nocturnal native fauna, Disruption in Ghost Bat Low Light Air (windborne) • Walkways and platforms that require permanent lighting at Slight Unlikely including the Ghost Bat roosting patterns night will have shrouded lenses and LED’s with optics that However, further direct lighting only onto walkways and platforms with detail on controls minimal “spill” to reduce light spill. provided in Section 6.4 Risk pathway is No permanent surface low, detailed Discharge of washwater waters bodies within assessment is not or process water vicinity No pathway to surface No planned discharge of water from site required. Discharge to potentially hydrocarbon waters due to site bunding • Slight Rare Low Water Potentially contaminated waters retained onsite via bunds contaminated or / (Turee Creek East ~ and surface water diversion. and surface diversions. However, further sediment laden 1.7km from detail on controls infrastructure) provided in Section 6.5

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• Diversion of clean surface water around work areas. • Processing plant stormwater will be collected in open drains which then discharge to sedimentation ponds • The area under the primary crusher and conveyor transfer points will be concrete slab, graded such that washdown water will be collected in concrete sediment/silt traps Terrestrial ecosystems • A drive in sump will be installed at the Primary Crusher. Priority Ecological • Secondary containment of all chemical and hydrocarbon Communities (PECs) are Potential contamination of storage across the entire site. known to occur on soil and groundwater due to • cracking clay habitats Approval process prior to mobilising any chemicals to site. presence of iron, Discharge to 200 m east of the • Drainage sumps to settle out sediments prior to discharge Detailed hydrocarbons and chemicals Moderate Possible Medium Land Deposit C and D Primary from the plant area. assessment within stormwater, leaks and provided in Crusher Facility and • Oily water separator at the heavy vehicle refuelling facility spills, impacting end Section 6.6 adjacent to overland to separate out hydrocarbons. beneficial use conveyor. • Flow meter will be installed at the outlet turkeys nest to record discharge volumes to the new discharge outlet Groundwater >40mbgl • Water quality sampling site will be established at the discharge point oily water separator (centrifugal type) to separate out hydrocarbons from surface water. • Mobile crushing and screening plants will be located within existing cleared borrow pit areas so that any dust laden water is retained within the confines of the borrow pit.

Risk pathway is low, detailed No sensitive land uses in Dust impacts on surrounding assessment is not proximity. Karijini vegetation, including required. Construction of new National Park is ~ 12 km reduced ability for Dust suppression including water sprays, water trucks, control of discharge outlet and west of the prescribed photosynthesis due to Dust Air (windborne) vehicle movements / restricted speeds. Minor Rare Low Detailed relocation of existing premise boundary. smothering assessment discharge outlet Health and amenity: None, Vegetation including provided in given the distance to the vegetation adjacent to Section 6.1 nearest receptor mining areas

• To manage erosion and scour the discharge point includes a concrete stilling well and weir system leading to a rip rap lined ramp to the rip rap lined creek bed • Dewatering water in the first instance utilised on site to supply water for operational purposes (processing and dust suppression). • Water use efficiency will be monitored. • Quantity of water discharged to the environment will be Category 6: monitored to ensure discharge water does not exceed the Mine carrying capacity of the receiving creek line. Dewatering • The discharge outlets will conform to the Pilbara Iron Sediment and Drainage Control Design Criteria to reduce erosion, sediment loads and associated water quality impacts. Detailed • assessment Terrestrial ecosystems Impact on creek ecosystem The potential increase in and distribution and abundance of Dewatering discharge Discharge to weeds will be managed in accordance with site specific provided in due to low quality discharge Minor Unlikely Medium water land Weed Management Plan. Section 6.6 water. Groundwater • Compliance with existing West Angelas Licence L7774 conditions 19, 20, 22 and 23, requiring management of the Turee Creek discharge points and monitoring of dewatering discharge water. • MS 970 existing conditions 6-1 and 7-1. • Commitments made within pending C,D and G Part IV Proposal will be adhered to, including; o Monthly permanent surface water flow at established monitoring points along the proposed surface water discharge extent. o Annual condition, cover and health of riparian vegetation within the observed (or predicted) surface water discharge extent

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Risk pathway is Dust impacts on surrounding No sensitive land uses in low, detailed proximity. Karijini vegetation, including assessment is not National Park is ~ 12 km reduced ability for Dust suppression including water sprays, water trucks, control of required. Construction of new inert west of the prescribed photosynthesis due to Dust Air (windborne) vehicle movements / restricted speeds. Slight Unlikely Low waste landfill premise boundary. smothering However detailed Vegetation including Health and amenity: None, assessment vegetation adjacent to given the distance to the provided in section mining areas nearest receptor 6.1 Category 64: Class II Waste to be covered with inert and incombustible material on an putrescible ad hoc basis and to at least 200 mm at final landform. Waste landfill Dump’ landfill will accept: Risk pathway is site Seepage of landfill leachate • Clean fill; leading to groundwater low, detailed contamination beyond its • Inert Type 1 Waste (consisting of large and bulky wastes assessment is not Terrestrial ecosystems / beneficial / post-closure use, including, redundant pipeline, conveyor belts, screen mats, required. Operation of new inert waste Solid / Liquid Discharge to Surface Water / and adverse impacts to the concrete rubble and steel products); Slight Unlikely Low landfill Waste Land Groundwater health and survival of • Inert Type 2 wastes (tyres and plastics); and vegetation However detailed • Putrescible waste (wooden packaging and broken pallets assessment dependent upon only). provided in section groundwater 6.8 Existing landfill conditions on L7774/2000/6

• Tanks will be self-bunded (double skinned) and include over-fill protection gauges; • The tanks will be designed, constructed and tested to Australian Standard AS 1940 and AS 1692 and DMIRS licensing requirements. • All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940:2017. • Vehicle refuelling will occur over concrete hardstand area. • All piping will be above ground where possibel in the hardstand area. • A secondary containment bund will be installed at the aperture where both the truck unloading pumps and heavy vehicle fill pumps are located. Hydrocarbon spills causing • Automatic cut off valves are located at the heavy mobile soil contamination, potential equipment dispenser. Discharge of seepage to groundwater Detailed hydrocarbons / resulting in reduction in • Concrete collection slabs will be installed under all areas at Hydrocarbon storage and Discharge to Soil / groundwater water quality beyond its the HVRF where there is the potential for hydrocarbons to assessment Non-prescribed hydrocarbon Possible Moderate Medium management construction land / water contamination. beneficial / post closure use be spilled. provided in activity contaminated and adverse impacts to the Section 6.7 water to Land • Concrete collection slabs drain into oily water collection health and survival of vegetation dependent upon sumps before being treated at an Oily Water Separator groundwater (OWS). • At Bay 2, the heavy vehicle refuelling pad, pump station bunded area and road tanker unloading slab will drain into a drive-in collection sump. • Water from the drive-in sump will overflow into a pump pit. A low shear helical rotor pump will transfer the oily water from the Bay 2 pump pit to the OWS drive-in sump located at Bay 1. • Steel oily water piping will run above ground between Bay 2 and Bay 1 around the perimeter of the HVRF facility. The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump. • The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump.

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6 Emission Management and Controls

RTIO (WA) has a Health, Safety, Environment and Quality Management System (HSEQ) that ensures environmental controls are developed for key environmental aspects, legal compliance is maintained and continuous improvement is achieved through a formal review process.

The construction and commissioning of the proposed infrastructure will also be completed in accordance with existing conditions on the Part V Operating Licence (L7774/2000/6) and MS 970 and 1015 (and pending MS).

Dust Emissions

Description of risk event

West Angelas is remote from communities. The nearest town, Newman, is located approximately 130 km east of West Angelas. West Angelas is also remote from other dust sensitive receptors, with the existing West Angelas operations and accommodation village and other mining projects in the region, being the nearest premises. The closest sensitive receptors to C, D and G include;

• Karijini National Park 2 km away from the proposed works approval boundary (see Figure 6-1); and

• the West Angelas Cracking Clay PEC habitat located on the north side of the overland conveyor corridor and approximately 200 m east of the Deposit C and D Primary Crusher Facility (see Figure 6-1). The potential for impacts of dust generation to adversely impact the vegetation within the West Angelas Cracking Clay PEC habitat exists (i.e. smothering reducing ability for photosynthesis) however given the controls outlined below and historical studies undertaken (Butler 2009) indicating that dust has negligible impact on vegetation health in the Pilbara; the risk is able to be managed appropriately. The is also the slight potential for dust to impact environmental values within the Karijini National Park exists, however given the distance from main dust generating activities the risk is seen to be low. Any potential impacts on both the National Park and cracking clays PEC have also been assessed through the Part IV approvals process for the C, D and G Proposal.

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Figure 6-1 Location of West Angelas Cracking Clay PEC and Karijini National Park

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Construction The main activities that have the potential to generate dust emissions during construction are:

• Construction of the Deposit C and D primary crushing facility and overland conveyor; • Construction of new ROM Ore load out • Modifications to the Hib A processing plant • Operation of mobile crushing and screening plant • Clearing, earthworks and vehicle movement on unsealed roads. • Construction of inert waste landfill • Construction of new licenced discharge outlet and relocation of existing discharge outlet; and • Earthworks for new refuelling facility

Operation Potential dust emissions during the commissioning and operation of C, D and G are typically point source emissions. Dust emissions are typically generated from a range of point sources including:

• The Deposit C and D primary crushing facility and overland conveyor; • Operations of new ROM Ore load out; • Operation of modified Hub A processing plant; • Operation of inert waste landfill.

Proposed environmental controls

Construction Dust emissions during construction will be managed in accordance with the West Angelas Project Construction Environmental Management Plan (CEMP). A broad range of controls shall be applied including: • Water carts will be used during clearing and construction activities and in areas with frequent vehicle movement on unsealed roads. The application of water increases the specific mass of the soil particles and to increase bonding between the soil particles, minimising the dust generated. • In some transport corridors, dust suppressant additives will be applied through water carts to assist with dust control. • Site clearing and rehabilitation will be managed to ensure that areas are only cleared as required and progressive rehabilitation is implemented as construction activities are completed. • Weather forecasts will be monitored to ensure the availability of adequate water carts if there is a risk of windy conditions. • Works that have the potential to generate high dust levels may be restricted during times of high winds.

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• Sprinkler systems (or any other approved dust suppression methods) shall be incorporated within the material acceptance, processing and storage areas of mobile crushing operations. The mobile jaw and impact crusher will have a sprinkler system installed over the hopper, end of the conveyor, and any other discharge points of the plant. • Materials shall be dampened prior to processing via the mobile crushing and screening plant. • All waste materials not used in the crushing and screening process shall be stockpiled in approved areas.

Operation Primary Crushing facility The primary crushing facility includes a dry baghouse dust extraction system which will extract dust from the following dust generating sources: • Apron feeder head End/ROM bin; • Vibrating grizzly feed chute; • Vibrating grizzly feeder discharge chute; • Apron feeder dribble chute; and • Discharge conveyor skirts exit. The primary crushing facility dust extraction system is shown below in Figure 6-2.

Figure 6-2 – Primary crushing facility dust extraction system

Dust suppression and washdown water for the primary crushing facility and discharge conveyor will be provided from the main turkey’s nest at the Deposit C and D Production hub. The following allowances have been made for dust suppression throughout the primary crushing facility and discharge conveyor; • dual tier dust suppression sprays above the static grizzly;

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• two water cannons located at the top of the ROM Bin to assist in the washdown of the ROM Bin; • one conveyor spray bar arrangement immediately downstream of the primary crusher discharge chute; • two conveyor dust suppression sprays for the discharge chutes from the vibrating grizzly and baghouse; The discharge conveyor from the primary crushing facility delivers ore onto the overland conveyor via an in-line transfer station. The transfer chute has pulse spray and misting spray within the chute for dust suppression. The discharge conveyor will be fitted with primary and secondary belt scrapers at the head end to minimise carryback as a source of potential dust emissions.

Overland Conveyor The overland conveyor will be provisioned with a cover for 97% of its length to restrict fugitive dust (Figure 6-3).

Figure 6-3 - Overland Conveyor Cross Section and Cover

The overland conveyor will be fitted with primary and secondary belt scrapers at the head end to minimise carryback as a source of potential dust emissions.

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Modifications to Hub A Processing Plant The Hub A surge bin shall be equipped with two insert able dust collectors. The apron feeders which control the discharge from the surge bin include dribble conveyors to capture any carryback on the apron feeder pans, and deliver this back into the main ore stream. The discharge points from the surge bin onto Conveyors C001 and C007 will each have dust suppression sprays. The base level of the surge bin facility has a concrete slab under the entire footprint of the, to capture spillage and facilitate washdown. The slab is graded to drain to a concrete sump. The sump has ramp to allow for clean out of settled solids, via front end loader. Water is discharged from the sump into the existing surface water drainage system at Hub A.

Residual risk rating

The licensee believes that the risk to the environment from potential dust emissions at West Angelas is a medium level risk, based on the distance from dust emitting sources to receivers (see Table 2-2 and Table 2-3) and the significant number of proposed controls to be implemented.

Noise and Vibration

Description of risk event

Construction Noise emissions during construction will be distributed across the site, predominantly from mobile equipment. The main source of noise emissions will be earthmoving and construction machinery, mobile crushing and screening and on-site power generation. Noise and vibration are not expected to be significant issues during the construction of the primary crusher, conveyors, processing plant modifications, waste dump landfill or discharge outlets. Operation Once operational the processing plant will operate on a continuous 24 hours per day basis. During mining operations noise and vibration sources include: • Running conveyors – start and stop alarms, rollers, drives and belt interaction (continuous operation). • Plant major equipment – primary and secondary crushers, vibrating screens, stackers, reclaimers and train load out. • Miscellaneous equipment – air compressors, blowers, transformers (continuous operation). • Mobile plant and vehicles – reverse warning alarms and other warning alarms (irregular).

The nearest receptors are the West Angelas Village, offices and mining operations, there are no residential premises within 20 km. Potential environmental receptors that could be impacted by noise during construction include heritage rock shelters within the application area and Ghost Bat roosting cave locations. Potential impacts to Ghost Bats is expected to

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be minor as the closest known Ghost Bat roosting cave is located approximately 2.4km from the primary crusher, refer Figure 6-4.

Figure 6-4 - Ghost Bat Roosting Cave Proximity to C, D and G infrastructure.

Proposed environmental controls

Construction During construction noise emissions will be managed under the CEMP. Controls include: • Fitting vehicles and stationary items of equipment with exhaust mufflers; • Screening or enclosing stationary items of equipment with acoustic enclosures to reduce operating nose levels. • Requiring contractors to comply with the Environmental Protection (Noise) Regulations 1997. • Construction works must be carried out in accordance with Section 6 of Australian Standard 2436-1981 “Guide to Noise control on Construction, Maintenance and Demolition Sites” and the Environmental Protection (Noise) Regulations 1997 (WA) • A Blast Management Plan must be prepared for all blasting activities and include an assessment of proximity to sensitive receptors, including heritage rock shelters and bat cave locations Operation Managed in accordance with the Environmental Protection (Noise) Regulations 1997 and the Environmental Management Plan submitted to support the West Angelas C, D and G Part IV proposal which includes requirements for blast management, such as setting vibration levels that can’t be exceeded.

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The noise emission profile and risk is well understood and as described above there are significant controls applied to monitoring and managing noise at West Angelas.

Residual risk to environment

The licensee believes that the residual risk to the environment from potential noise emissions at West Angelas is low, based on the distance from noise emitting sources to receivers and the significant number of proposed controls to be implemented.

Odour Emissions

No odour emissions expected from the construction, commissioning or operation of the processing plant, mobile crushing and screening plants, Bulk Fuel storages, discharge outlets or landfill.

Light Emissions

Light emissions during construction of West Angeles C, D and G is expected to be minimal. Construction activities undertaken at night will be via portable lighting towers and portable light fittings. When constructed and commissioned the processing plant will be operate on a continuous 24 hour basis. Night lighting in and around the processing plant, accommodation areas, offices and workshops is required in accordance with Australian standards for safe work. The nearest receptors are the West Angelas Village, there are no residential premises within 20 km. The closest known Ghost Bat roosting cave approximately 2.4km from the western side of the primary crusher. The following controls will be implemented to manage light emissions: • Plant lighting design will comply with Rio Tinto and Australian standards for safe work. • Lighting design will be modelled prior to installation to ensure light is directed to work areas and minimal light spill occurs. • Walkways and platforms that require permanent lighting at night will have LED’s with optics that direct lighting only onto walkways and platforms with minimal “spill” to reduce light spill.

The risk to the environment related to light emissions during construction at West Angelas is considered low based on the risk rating matrix based on the distance from light sensitive receivers, and the controls to be implemented.

Discharge to water

There are no natural permanent or semi-permanent surface water features along the surface discharge extent. The only local surface water features are transient, local depressions filled following rainfall events and dissipated via natural infiltration and evaporation shortly after. Paperbark Spring on Turee Creek East is the closest permanent or semi-permanent surface water feature, located more than 60 km from West Angelas. The east branch of Turee Creek

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(Turee Creek East) is an ephemeral watercourse which flows only depending on the occurrence of high intensity rainfall events, typical of Pilbara watercourses. There are no planned discharges to water during construction or operation of any of the infrastructure subject to this application and therefore the residual risk to the environment is seen as low.

Discharge to Land

Primary Crushing / Screening Facility

6.6.1.1 Description of risk event

Potential discharges to soil, natural drainage lines and groundwater during construction exist due to the possible presence of iron, hydrocarbons and chemicals within stormwater, leaks and spills associated with the infrastructure.

6.6.1.2 Proposed environmental controls

Construction The environmental controls proposed to mitigate any potential impact on the environment during construction include: • Implementation of the CEMP • Diversion of clean surface water around work areas • Mobile crushing and screening plants will be located within existing cleared borrow pit areas so that any dust laden water is retained within the confines of the borrow pit. • Potentially polluting substances, including hydrocarbons and other chemicals, shall be stored in secondarily contained bunds/areas to prevent unintentional discharge to the environment • Approval process prior to mobilising any chemicals to site. • No permitted release of any potentially contaminated site water that has not been tested for hydrocarbon contaminants • Clearing of slopes leading to watercourses shall be delayed until construction of the crossing is imminent to minimise erosion, where practicable. Bank stabilisation works shall be undertaken at those locations. • Equipment servicing shall take place in designated workshop areas

The adoption of surface water quality triggers is not considered appropriate given the low environmental risk.

Operation The processing area will be constructed to ensure stormwater run-off and potentially sediment loaded run-off from the plant are separated, with the site graded to direct stormwater away from the process plant. The area surrounding the crushing plant and conveyor transfer points will be compacted structural fill. The plant drainage will flow to an earthen sedimentation / silt pond designed to contain a peak 1:10 year rainfall event.

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The area under the primary crusher and transfer points onto the discharge conveyor will be concrete slab, graded such that washdown water will be collected in concrete drive in sumps. Concrete drive-in sumps are also provided at the transfer point between the primary crusher discharge conveyor and the overland conveyor, as well as at the surge bin facility. All washdown from concrete slabs placed under the operating plant will be directed into these sumps. The bulk of solids will settle in the drive in pits of these sumps while the liquid containing particles will be pumped into a silt trap at the primary crushing facility. Fine solids will settle in these silt traps prior to release of the clean water. The drive in sumps will be debogged using front end loaders. Sumps are designed to be drive-in to allow removal of sediment. These are depicted in Appendix 1, Figures H-M. No other waste water is expected to be generated in the crusher/conveyor circuit. The levee and drain structures installed to prevent the ingress of surface water in to the mining operations will also be used to direct runoff water around the plant and other infrastructure. A range of controls will be implemented to ensure any potential risk to the environment is minimised including: • Diversion of clean surface water around the work area. • Secondary containment of all chemical and hydrocarbon storage across the entire site. • Approval process prior to mobilising any chemicals to site. • Drainage sumps to settle out sediments prior to discharge from the plant area. • Oily water separator at the heavy vehicle refuelling facility to separate out hydrocarbons.

6.6.1.3 Residual risk to the environment

Sensitive receptors include groundwater (>40mbgl) and the West Angelas Cracking Clay located approximately 200 m east of the facility. The Licensee considers the environmental risk of discharging to land to be medium risk level during construction and operation and able to be managed appropriately given proposed controls.

Dewatering Discharge Outlets

6.6.2.1 Description of risk event

Dewatering water will be artificially discharged to Turee Creek East from the additional C/D and relocated Deposit A dewatering discharge outlets.

Given the absence of permanent or semi-permanent surface water features or other sensitive receptors the Licensee considers the environmental risk of discharging dewatering water to be low. The creek ecosystem will not be affected by the quality of excess dewatering water discharged due to the high quality of groundwater being discharged, with any impact being limited to change in vegetation distribution and abundance (to be managed via Ministerial Statement).

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Flows will be contained within the low flow channel, overtopping of the bank (in natural dry conditions) is not anticipated since the volume of the dewatering discharge will be significantly smaller than the volume of natural flows during flood events and as such, interaction with the West Angelas Cracking Clay PEC is not expected (approximately 150 m from the bank of Turee Creek East). The known groundwater depths within the application area range from 48 meters below ground level to 63 meters, hence any interaction with groundwater is unlikely.

Discharge of dewatering water will result in a change to the hydrological regime of Turee Creek East from an ephemeral hydrologic regime to a perennial hydrologic regime for the surface discharge extent. The surface discharge extent will not extend to within 2 km of the KNP boundary (Figure 6-5).

Dewatering discharge could potentially cause erosion and / or scouring at the outlet, resulting in increased sedimentation (potential vegetation smothering) down gradient of the discharge location. There are no aquatic fauna that could be impacted by increased turbidity given the ephemeral nature of the drainage line.

6.6.2.2 Proposed environmental controls

A flow meter will be installed at the outlet of the Deposit C and D turkeys nest to record discharge volumes to the new discharge outlet and a water quality sampling site will be established at the discharge point. Water from the turkey’s nest will be used for dust suppression and plant process water purposes. All surplus water will be delivered to the new discharge point at a rate of 300 L/sec with forecast annual discharge volumes ranging from 2.2 GL/a to 6.7 GL/a with a total volume from all discharge points not exceeding 12 GL/a. To manage erosion and scour the discharge point includes a concrete stilling well and weir system leading to a rip rap lined ramp to the rip rap lined creek bed (Appendix 1 – Figures U, V and W).

• Dewatering water in the first instance, utilised on site to supply water for operational purposes (processing and dust suppression). • Water use efficiency will be monitored. • Quantity of water discharged to the environment will be monitored to ensure discharge water does not exceed the carrying capacity of the receiving creek line. • The discharge outlets will conform to the Pilbara Iron Sediment and Drainage Control Design Criteria to reduce erosion, sediment loads and associated water quality impacts. • The potential increase in and distribution and abundance of weeds will be managed in accordance with site specific Weed Management Plan. • Existing West Angelas Licence L7774 conditions 19, 20, 22 and 23 require management of the Turee Creek discharge points and monitoring of dewatering discharge water. The monitoring suite is shown below:

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Sample location Parameter Frequency

Dewatering Volume (kL) Monthly Discharge Outlets Electrical Conductivity (μS/cm)

pH (pH units)

Total Recoverable Hydrocarbons (mg/L) Quarterly Major ions (mg/L) - Na, K, Ca, Mg, Cl, CO3, HCO3, SO4, NO3

Metals (mg/L) - Al, B, Fe, Cu, Zn, As, Cr, Pb, Cd, Hq, Ni, Se, Mn

Total Suspended Solids (mg/L)

• MS 970 existing conditions 6-1 and 7-1. • Commitments made within pending C,D and G Part IV Proposal will be adhered to, including: o Monthly permanent surface water flow at established monitoring points along the proposed surface water discharge extent; and o Annual condition, cover and health of riparian vegetation within the observed (or predicted) surface water discharge extent No additional controls are proposed for the relocated discharge outlet which is a minor relocation replicating the same design and operated in accordance with L7774/20000/6.

Residual risk to environment

The Licensee considers the environmental risk of discharging dewatering water to be medium risk given the low environmental value nature of the drainage line (i.e. no permanent or semi-permanent water). The creek ecosystem will not be affected by the quality of excess dewatering water discharged, due to the high quality of groundwater in the aquifer and lack of aquatic fauna receptors. The adoption of surface water quality triggers is not considered appropriate given the low environmental risk and would be inappropriate to do so given a lack of receiving environment. Dewatering discharge water quality will be monitored and compared against appropriate ANZECC 2000 water quality trigger values (as per condition 23 of L7774). The risk to the environment from discharges to land from the proposed infrastructure is considered medium given the distance to any sensitive receptor (West Angelas Cracking Clay located approximately 200 m east of the Deposit C and D Primary Crusher Facility) and the significant controls to be implemented.

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Figure 6-5 - Surplus water discharge wetting extent

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Hydrocarbon Management

Hydrocarbons stored on site during the Project construction will be predominantly diesel fuel, lubricants (new and used oil) and hydraulic fluids. There will typically be up to four temporary 110 kL diesel storage tanks on site at any one time.

Hydrocarbons will be stored in the contractor laydown work areas. All bulk hydrocarbon storage will comply with DMIRS licensing requirements. All chemicals and hydrocarbons used during construction will be secondarily contained in bunded storage areas, approved chemical cabinets or dual skinned tanks. All chemicals and hydrocarbons will be managed under the Construction Environmental Management Plan (CEMP) and will be in accordance with Dangerous Goods Safety (Storage and Handling of non–explosive) Regulations 2007 and AS1940:2004 The storage and handling of flammable and combustible liquids. Site environmental management requirements include:

• All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940; • Vehicle refuelling will occur over compacted, lined earthen pad or a concrete hardstand area (with the exception of field based machinery refuelling where a drip tray will be used at the transfer point); • All piping will be above ground wherever practicable, and critically reviewed if any underground sections are proposed; • All tanks will be secondarily contained; • Substances in small volume packages (nominally 20 litres or less) will be stored in a self bunded chemical cabinet or in a bunded area; • Containers and drums may be stored temporarily on self bunded pallets or in a HDPE lined earthen bund. The capacity of the bunding must be at least 100 percent of the volume of the largest container plus 25 percent of the storage capacity up 10,000 litres as per AS1940 s4.4.3; and • Spill kits suitable for the stored material being stored will be co-located with all chemical storage areas.

The following hydrocarbon storage and management facilities applying to operations activities include: • 2 x 200 kl bulk fuel storage tanks and pump station; • Road train unloading infrastructure, as a back-up supply to the HVRF, capable of accepting triple road trains, but unloading one tanker at a time; • Heavy vehicle refuelling bays and associated bunds as per Australian Standard 1940 - The storage and handling of flammable and combustible liquids (AS 1940) • Oily water collection and treatment;

The following hydrocarbon storage controls include; • Tanks will be self-bunded (double skinned) and include over-fill protection gauges;

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• The tanks will be designed, constructed and tested to Australian Standard AS 1940 and AS 1692 and DMIRS licensing requirements. • All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940. • Vehicle refuelling will occur over concrete hardstand area. • All piping will be above ground in the hardstand area. • A secondary containment bund will be installed at the aperture where both the truck unloading pumps and heavy vehicle fill pumps are located. • Automatic cut off valves are located at the heavy mobile equipment dispenser. • Concrete collection slabs will be installed under all areas at the HVRF where there is the potential for hydrocarbons to be spilled. • Concrete collection slabs drain into oily water collection sumps before being treated at an Oily Water Separator (OWS). • At Bay 2, the heavy vehicle refuelling pad, pump station bunded area and road tanker unloading slab will drain into a drive-in collection sump. • Water from the drive-in sump will overflow into a pump pit. A low shear helical rotor pump will transfer the oily water from the Bay 2 pump pit to the OWS drive-in sump located at Bay 1. • Steel oily water piping will run above ground between Bay 2 and Bay 1 around the perimeter of the HVRF facility. The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump. • The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive- in sump.

The risk to the environment from hydrocarbons during construction is considered medium given the distance to any sensitive receptor (see Table 2-2 and Table 2-3), and the significant controls to be implemented.

Solid/Liquid Waste

There are no liquid waste by-products generated by the C, D and G Project during construction. All controlled and general domestic (putrescible) wastes shall be disposed of offsite.

Solid industrial waste will be generated for both construction and operation of the C, D and G project and shall be disposed of to the new Landfill and managed in accordance with L7774/2000/6. The proposed Waste Dump landfill will accept:

• Clean fill; • Inert Type 1 Waste (consisting of large and bulky wastes including, redundant pipeline, conveyor belts, screen mats, concrete rubble and steel products); • Inert Type 2 wastes (tyres and plastics); and • Putrescible waste (wooden packaging and broken pallets only).

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The Licence Holder proposes that the ‘Waste Dump’ landfill be designed, constructed and managed to the following criteria:

• Located more than 100 m from any other perennial or permanent watercourse and not within an Environmentally Sensitive Area; Located so that distance between waste and highest seasonal and expected post mining ground water level is no less than 3 m; • Location recorded on internal GIS mapping system; • Lifespan of at least five years; • Earthen bunding installed around the facility to divert stormwater away; • A sump or bunding maintained within the landfill to collect any surface water that has come into contact with waste; • Waste covered with inert and incombustible material on an ad hoc basis and to at least 200 mm at final landform.

The indicative location provide for the waste dump landfill is the following distance from relevant environmental receptors:

• Greater than 40m to groundwater. • Approximately 2 km from the closest ephemeral drainage line, the Turee Creek East tributuary.

Waste material that is suitable for re-use or recycling will be separated from landfill waste and sent off-site for treatment or recycling as practicable. Domestic wastes will be disposed of in the existing Deposit B licensed site landfill. Controlled Waste will be removed from site via an appropriately licensed controlled waste carrier and relevant records including tracking notes maintained on site for audit and inspection purposes.

The risk to the environment from solid and liquid wastes during construction and operations the C, D and G project is considered low given the distance to any sensitive receptor (see Table 2-2 and Table 2-3), and the significant controls to be implemented.

Flora and Fauna

New clearing is required for the construction of the proposed infrastructure. It is expected that up to 4,310 ha of clearing is required however the area has previously been biologically surveyed and approval for disturbance is currently pending Part IV approval. Of this up to 101ha will be required for the footprint of the C, D and G proposal. Based on previous levels of assessment, the construction and operation of proposal is not anticipated to affect Conservation Significant Flora and Fauna and Matters of National Environmental Significance.

Flora and Fauna impacts shall be managed in accordance with the pending update to MS970, EPBC Approval and Native Vegetation Clearing Permit.

Vegetation clearing requirements are managed in accordance with RTIO system requirements and include;

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• Approval Request permits are required to be issued via Rio Tinto’s internal Approvals Coordination process to manage ground disturbing activities on site including the CEMP; • The issuing of permits involves extensive analysis using GIS data; • The commencement of work under Approval Request permits requires formal ecological survey, delineation of clearing limits, management of ground disturbing activities and extensive reporting of all ground disturbance.

Additional general site-wide controls relating to fauna management include:

• Maintenance of a 500m buffer from known Bat roosting caves during night construction works • General personnel and contractors are prohibited from feeding or handling nay wildlife in the Project area; • Trained Fauna Handlers will be on site to manage fauna interaction issues; • A fauna interaction register will be maintained on site; • All open pits and trenches are required to include fauna egress facilities or preferably prevent fauna access to the extent possible; • Water sources (i.e. turkeys nests) will be fenced so that non-native fauna are not attracted to the area; • All waste food material is contained in closed bins onsite; and • Site communications will periodically feature conservation significant fauna to assist with educating the workforce on fauna management requirements.

The risk to flora and fauna during construction is considered low based on assessment of ecological survey and the significant controls to be implemented.

7 Rehabilitation and Closure

After construction works are completed, areas that have been cleared and no longer required for operational use will be rehabilitated.

On completion of the required mining operations all structures associated with West Angelas will be removed from the site and the area rehabilitated. The closure of infrastructure and activities the subject of this works approval will follow the approved mine closure plan for the West Angelas Mine. The closure plan will evolve over time and will be updated regularly as required under the new Ministerial Statement which will be approved as part of the C, D and G Proposal.

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8 Project Costs

Costs associated with the construction of the C, D and G proposal are detailed below:

Table 8-1: Project Costs

Facility Description

Primary crusher, production hub and area works, ROM Ore Load 51,217,935 out

Overland conveyor, deposit A surge Bin facility 158,758,090

Secondary crushing, screening, conveyors and substations 43,344,083

Heavy Vehicle refuelling, bulk fuel storage facility, Deposit C and 22,019,359 D Park Up, production Hub

Landfill establishment 127,226

New discharge outlet and relocation of existing, dewatering 18,845,093 pipelines and pumps.

Water storage, turkeys nests, drains and sedimentation ponds 14,476,484

Total Cost (excl, GST) 291,788,270

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9 Summary of Commitments

Section Key Emissions Potential impacts Proposed Controls number • Water carts will be used during clearing and construction activities and in areas with frequent vehicle movement on unsealed roads. The application of water increases the specific mass of the soil particles and to increase bonding between the soil particles, minimising the dust generated. • In some transport corridors, dust suppressant additives will be applied through water carts to assist with dust control. • Site clearing and rehabilitation will be managed to ensure that areas are only cleared as required and progressive rehabilitation is implemented as construction Dust generated from general activities are completed. construction activities, clearing, • Weather forecasts will be monitored to ensure the availability of adequate water mobile crushing and screening, carts if there is a risk of windy conditions. Dust Emissions - construction of the landfill, • Works that have the potential to generate high dust levels may be restricted during 6.1 Construction discharge outlets, process plant and times of high winds. vehicle traffic on unsealed access • Sprinkler systems (or any other approved dust suppression methods) shall be tracks. incorporated within the material acceptance, processing and storage areas of

mobile crushing and screening operations. • The mobile jaw and impact crusher will have a sprinkler system installed over the hopper, end of the conveyor, and any other discharge points of the plant. • Materials shall be dampened prior to processing via the mobile crushing and screening plant. • All waste materials not used in the crushing and screening process shall be stockpiled in approved areas.

• A dry baghouse dust extraction system will be installed at the primary crushing facility. Dust Emissions - Dust generated from operation of • 6.1 Operation new production plant dual tier dust suppression sprays above the static grizzly; • two water cannons located at the top of the ROM Bin to assist in the washdown of the ROM Bin;

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• two pulse spray arrangements in the apron feeder dribble chute; • single tier dust suppression spray at the vibrating grizzly; • one conveyor spray bar arrangement immediately downstream of the primary crusher discharge chute; • two conveyor dust suppression sprays for the discharge chutes from the vibrating grizzly and baghouse; • pulse spray and misting spray within the transfer chute; • Overland conveyor is enclosed • Fitting vehicles and stationary items of equipment with exhaust mufflers; • Screening or enclosing stationary items of equipment with acoustic enclosures to reduce operating nose levels. • Requiring contractors to comply with the Environmental Protection (Noise) Regulations 1997. Noise - • Construction works must be carried out in accordance with Section 6 of Australian Noise generated during construction Standard 2436-1981 “Guide to Noise control on Construction, Maintenance and 6.2 Construction Demolition Sites” and the Environmental Protection (Noise) Regulations 1997 (WA) • A Blast Management Plan must be prepared for all blasting activities and include an assessment of proximity to sensitive receptors, including nearby communities, heritage rock shelters and bat cave locations • Environmental Protection (Noise) Regulations 1997

• Environmental Protection (Noise) Regulations 1997 and Part IV Environmental Noise – Operation Noise generated during operations Management Plan relating to blast management. 6.2

Odour - • No significant odour emissions are expected to be produced from the construction Construction and Odour generated during 6.3 construction and operations or operation of the processing plant, mobile crushing and screening plants, operation discharge outlets or landfill. • Portable lighting towers and portable light fitting will not encroach within 500m of Light Emissions - Light emissions generated during known Ghost Bat roosting caves. 6.4 Construction night construction • Directional lighting will be used to minimise stray light emission. • Plant lighting design will comply with Rio Tinto and Australian standards for safe work. Light Emissions - Light emissions generated during 24 • Lighting design will be modelled prior to installation to ensure light is directed to 6.4 Operation hour operations work areas and minimal light spill occurs. • Walkways and platforms that require permanent lighting at night will have LED’s with optics that direct lighting only onto walkways and platforms with minimal “spill”

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to reduce light spill. • Portable lighting towers and portable light fitting will not encroach within 500m of known Ghost Bat roosting caves. • Directional lighting will be used to minimise stray light emission. Implementation of the CEMP • Diversion of clean surface water around work areas • Mobile crushing and screening plants will be located within existing cleared borrow pit areas so that any dust laden water is retained within the confines of the borrow pit. • Potentially polluting substances, including hydrocarbons and other chemicals, shall be stored in secondarily contained bunds/areas to prevent unintentional discharge to the environment. Discharges to Impact to groundwater water • land during quality outside of natural Approval process prior to mobilising any chemicals to site. 6.6 construction variation • No permitted release of any potentially contaminated site water that has not been tested for hydrocarbon contaminants. • Clearing of slopes leading to watercourses shall be delayed until construction of the crossing is imminent to minimise erosion, where practicable. Bank stabilisation works shall be undertaken at those locations. • Equipment servicing shall take place in designated workshop areas. • Where practicable, construction of watercourse crossings shall be scheduled from early April to late November (Pilbara dry season). Methodology must be approved by the Project Environmental Advisor • The processing area will be constructed to ensure stormwater run-off and potentially sediment loaded run-off from the plant are separated • Site graded to direct stormwater away from the process plant • Diversion of clean surface water around the work area. • Processing plant stormwater will be collected in open drains which then discharge to sedimentation ponds Discharges to Impact to groundwater water land during quality outside of natural • The area under the primary crusher and conveyor transfer points will be concrete 6.6 operations slab, graded such that washdown water will be collected in concrete sediment/silt variation traps • A drive in sump will be installed at the Primary Crusher. • Secondary containment of all chemical and hydrocarbon storage across the entire site. • Approval process prior to mobilising any chemicals to site. • Drainage sumps to settle out sediments prior to discharge from the plant area.

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• Oily water separator at the heavy vehicle refuelling facility to separate out hydrocarbons. • Flow meter will be installed at the outlet turkeys nest to record discharge volumes to the new discharge outlet • Water quality sampling site will be established at the discharge point • Erosion control structure constructed at both the new and relocated discharge points as per design in Appendix 1 – Figures U, V and W. • Mobile crushing and screening plants will be located within existing cleared borrow pit areas so that any dust laden water is retained within the confines of the borrow pit.

• In accordance with the CEMP • All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940:2004; • Vehicle refuelling will occur over compacted, lined earthen pad or a concrete hardstand area (with the exception of field based machinery refuelling where a drip Hydrocarbon tray will be used at the transfer point); Management Hydrocarbon spill causing soil • All tanks will be secondarily contained; contamination / seepage to 6.7 during • Substances in small volume packages (nominally 20 litres or less) will be stored in a groundwater construction self bunded chemical cabinet or in a bunded area; • Containers and drums may be stored temporarily on self bunded pallets or in a HDPE lined earthen bund. The capacity of the bunding must be at least 100 percent of the volume of the largest container plus 25 percent of the storage capacity up 10,000 litres as per AS1940:2004 s4.4.3; and • Spill kits suitable for the stored material being stored will be co-located with all chemical storage areas. Hydrocarbon Hydrocarbon spill causing soil • Tanks will be self-bunded (double skinned) and include over-fill protection gauges; Management contamination / seepage to • The tanks will be designed, constructed and tested to Australian Standard AS 1940 during operations groundwater and AS 1692 and DMIRS licensing requirements. • All storage tanks and transfer points will be above ground and secondarily contained in accordance with AS1940:2017. 6.7 • Vehicle refuelling will occur over concrete hardstand area. • All piping will be above ground in the hardstand area. • A secondary containment bund will be installed at the aperture where both the truck unloading pumps and heavy vehicle fill pumps are located. • Automatic cut off valves are located at the heavy mobile equipment dispenser.

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• Concrete collection slabs will be installed under all areas at the HVRF where there is the potential for hydrocarbons to be spilled. • Concrete collection slabs drain into oily water collection sumps before being treated at an Oily Water Separator (OWS). • At Bay 2, the heavy vehicle refuelling pad, pump station bunded area and road tanker unloading slab will drain into a drive-in collection sump. • Water from the drive-in sump will overflow into a pump pit. A low shear helical rotor pump will transfer the oily water from the Bay 2 pump pit to the OWS drive-in sump located at Bay 1. • Steel oily water piping will run above ground between Bay 2 and Bay 1 around the perimeter of the HVRF facility. The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump. • The heavy vehicle refuelling pad at Bay 1 will drain directly into the Bay 1 OWS drive-in sump.

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Appendix 1 - Figures

• Figure A WA-2110-F-00001_RA – Process Flow Diagram • Figure B WA-1810-Y-00002 – Overall Site layout 1 • Figure C WA-1810-Y-00003 – Overall Site Layout 2 • Figure D WA-1810-Y-00004 – Overall Site Layout 3 • Figure E WA-1810-Y-00005 – Overall Site Layout 4 • Figure F WA-1810-Y-00006 – Overall Site Layout 5 • Figure G WA-1810-Y-00007 – Overall Site Layout 6 • Figure H WA-2110-M-00001 – Primary Crusher, General Arrangement • Figure I WA-2110-M-00121 – Primary Crusher – CD Layout • Figure J WA-2110-Y-00001 – Primary Crushing, Hardstand and Work Areas • Figure K WA-2150-M0057 – Overland Conveyor Drive, General Arrangement • Figure L WA-2150-Y-00016 – Overland Conveyor Hardstand and Work Area • Figure M WA-1890-Y-00002 – ROM Ore Loadout • Figure N WA-1910-G-00018 – Production Hub, General Arrangement • Figure O WA-1960-P00001 – Bulk Fuel Process Flow • Figure P WA-1960-P00002 – Bulk Fuel Process Flow • Figure Q WA-1910-Y-00010 – Deposit C Park Up Area, General Arrangement • Figure R WA-1910-Y-00015 – Deposit D Park Up Bulk Earthworks, General Arrangement • Figure S W113-C-00049 - Crusher and Surge Bin Works, Earthworks and Drainage • Figure T WA-2150-M-00070 - Surge Bin Facility, General Arrangements • Figure U K-WADCD-IMP-C-010 – New discharge outlet • Figure V WA-1580-Y-00001 – Relocated surplus dewatering discharge plan • Figure W WA-1580 – 00002 - Relocated surplus dewatering discharge sections and details

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Figure A - WA-2110-F-00001_RA – Process Flow Diagram

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Figure B - WA-1810-Y-00002 – Overall Site layout 1

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Figure C - WA-1810-Y-00003 – Overall Site Layout 2

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Figure D - WA-1810-Y-00004 – Overall Site Layout 3

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Figure E - WA-1810-Y-00005 – Overall Site Layout 4

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Figure F - WA-1810-Y-00006 – Overall Site Layout 5

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Figure G - WA-1810-Y-00007 – Overall Site Layout 6

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Figure H - WA-2110-M-00001 – Primary Crusher, General Arrangement

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Figure I - WA-2110-M-00121 – Primary Crusher – CD Layout

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Figure J - WA-2110-Y-00001 – Primary Crushing, Hardstand and Work Areas

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Figure K - WA-2150-M0057 – Overland Conveyor Drive, General Arrangement

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Figure L - WA-2150-Y-00016 – Overland Conveyor Hardstand and Work Area

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Figure M - WA-1890-Y-00002 – ROM Ore Loadout

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Figure N - WA-1910-G-00018 – Production Hub, General Arrangement

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Figure O - WA-1960-P00001 – Bulk Fuel Process Flow

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Figure P - WA-1960-P00002 – Bulk Fuel Process Flow

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Figure Q - WA-1910-Y-00010 – Deposit C Park Up Area, General Arrangement

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Figure R - WA-1910-Y-00015 – Deposit D Park Up Bulk Earthworks, General Arrangement

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Figure S - W113-C-00049 - Crusher and Surge Bin Works, Earthworks and Drainage

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Figure T - WA-2150-M-00070 - Surge Bin Facility, General Arrangements

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Figure U - K-WADCD-IMP-C-010 – New discharge outlet

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Figure V WA-1580-Y-00001 – Relocated surplus dewatering discharge plan

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Figure W WA-1580 – 00002 - Relocated surplus dewatering discharge sections and details