Anglogold Ashanti Australia Limited

Licence

Environmental Protection Act 1986, Part V

Licensee: AngloGold Ashanti Australia Limited

Licence: L8579/2011/2

Registered office: 44 St Georges Tce PERTH WA 6000

ACN: 008 737 424

Premises address: Sunrise Dam Gold Mine Mining tenements M39/376, M39/375, M39/374, M39/366, M39/357, M39/348, M39/347, M39/217, M38/426, M39/766, M39/499, M39/373, M39/1102, M39/1103 and L38/176 LAVERTON WA as depicted in Schedule 1.

Issue date: Thursday, 10 July 2014

Commencement date: Monday, 21 July 2014

Expiry date: Friday, 20 July 2029

Prescribed premises category Schedule 1 of the Environmental Protection Regulations 1987

Category production or Approved Premises Category Category description design capacity production or design number capacity 05 Processing or beneficiation of metallic or 50 000 tonnes or more per 4 500 000 tonnes per non-metallic ore year year 06 Mine dewatering 50 000 tonnes or more per 5 000 000 tonnes per year year 52 Electric power generation 10 megawatts or more in 48 MW aggregate (using a fuel other than natural gas) 54 Sewage facility 100 m3 or more per day 190 m3 per day 57 Used tyre storage 100 tyres or more 1 000 tyres 64 Class II putrescible landfill site 20 tonnes or more per 5 000 tonnes per year year

Conditions This Licence is subject to the conditions set out in the attached pages.

Date signed: 27 February 2017

...... Tim Gentle Officer delegated under section 20 of the Environmental Protection Act 1986

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Contents

Licence 1 Contents 2 Introduction 2 Licence conditions 5 1 General 5 2 Emissions 9 3 Monitoring 10 4 Information 13 Schedule 1: Maps 16 Schedule 2: Reporting & notification forms 20

Introduction

This Introduction is not part of the Licence conditions.

DER’s industry licensing role The Department of Environment Regulation (DER) is a government department for the state of Western Australia in the portfolio of the Minister for Environment. DER’s purpose is to advise on and implement strategies for a healthy environment for the benefit of all current and future Western Australians.

DER has responsibilities under Part V of the Environmental Protection Act 1986 (the Act) for the licensing of prescribed premises. Through this process DER regulates to prevent, control and abate pollution and environmental harm to conserve and protect the environment. DER also monitors and audits compliance with works approvals and licence conditions, takes enforcement action as appropriate and develops and implements licensing and industry regulation policy.

Licence requirements This Licence is issued under Part V of the Act. Conditions contained within the Licence relate to the prevention, reduction or control of emissions and discharges to the environment and to the monitoring and reporting of them.

Where other statutory instruments impose obligations on the Premises/Licensee the intention is not to replicate them in the licence conditions. You should therefore ensure that you are aware of all your statutory obligations under the Act and any other statutory instrument. Legislation can be accessed through the State Law Publisher website using the following link: http://www.slp.wa.gov.au/legislation/statutes.nsf/default.html

For your Premises relevant statutory instruments include but are not limited to obligations under the:

 Environmental Protection (Unauthorised Discharges) Regulations 2004 – these Regulations make it an offence to discharge certain materials such as contaminated stormwater into the environment other than in the circumstances set out in the Regulations.

 Environmental Protection (Controlled Waste) Regulations 2004 - these Regulations place obligations on you if you produce, accept, transport or dispose of controlled waste.

 Environmental Protection (Noise) Regulations 1997 – these Regulations require noise emissions from the Premises to comply with the assigned noise levels set out in the Regulations.

You must comply with your licence. Non-compliance with your licence is an offence and strict penalties exist for those who do not comply.

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Licence holders are also reminded of the requirements of section 53 of the Act which places restrictions on making certain changes to prescribed premises unless the changes are in accordance with a works approval, licence, closure notice or environmental protection notice.

Licence fees If you have a licence that is issued for more than one year, you are required to pay an annual licence fee prior to the anniversary date of issue of your licence. Non payment of annual licence fees will result in your licence ceasing to have effect meaning that it will no longer be valid and you will need to apply for a new licence for your Premises.

Ministerial conditions If your Premises has been assessed under Part IV of the Act you may have had conditions imposed by the Minister for Environment. You are required to comply with any conditions imposed by the Minister.

Premises description and Licence summary AngloGold Ashanti Australia Limited’s (AGAA) Sunrise Dam Gold Mine (SDGM) operation is located 55 km south of Laverton in Western Australia. It is located on the eastern shore of Lake Carey and lies within the Mt Weld Pastoral Lease. The project comprises of underground and open cut mining operations, processing operations and ancillary services including a natural gas/ diesel power station, paste plant, administration facilities, aerodrome and accommodation village.

Mine dewatering Dewatering from SDGM occurs via a number of sumps and bores and is pumped from the open pit and underground workings into settling ponds located on the Sunrise Waste Dump. From the settling ponds, water can be fed to the process plant or discharged to Lake Carey as required. The discharge water is gravity fed to a discharge trench, which directs water around the edge of the waste dump and into a channel that opens onto the eastern shoreline of Lake Carey. Discharge to the lake began in 1996, at an unknown location, during operation of the site by Acacia Resources. Water generated by dewatering activities is also used across site for processing and dust suppression.

Processing SDGM employs gravity/carbon-in-leach technology to recover gold through processing up to a previously maximum licensed rate of 3.7 mtpa. This capacity was increased by 21% to 4.5 mtpa as a result of existing plant optimisation and included in the September 2015 amendment.

The main unit operations in the processing plant are crushing, milling, gold leaching, gold recovery and tailings deposition. SDGM operates a central thickened discharge (CTD) TSF. Decant from this facility is recycled for the use as process water in the plant.

A paddock style TSF has been decommissioned and final rehabilitation works were completed in early 2013. No operational activities are conducted on this TSF other than monitoring.

Power Station SDGM previously ran three power stations, a combination of diesel and LNG gensets. Power station A is owned by AGAA. Power stations B and C are owned by Energy Developments Limited (EDL). EDL operate all three power stations.

A fourth power station, Station D, has been authorised to be constructed and operated by EDL as part of the February 2017 amendment. The capacity of category 52 was increased by 8 MW of gas generation to 43 MW, consisting of 10.5 MW back up diesel and 32.5 MW gas generation.

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Landfill The SDGM landfill facility is located within the footprint of the Cleo waste dump. The landfill is encapsulated within the Cleo waste dump and as such, is well above natural ground level. The risk of windblown waste is reduced by the high waste rock walls of the landfill cell.

Sewage Facility The sewage system installed at the SDGM village is a straightforward septic system. Raw sewerage discharged from the plumbing fixtures throughout the village is a combination of black and grey water flows. The raw sewerage is plumbed to septic tanks where solids are collected and effluent is decanted off into pump pits. The pump pits downstream of the septic tanks collect and transfer the effluent to a series of seven evaporation ponds that are remote from the village. The evaporation ponds store the effluent whilst it is evaporating to the atmosphere. Five of the seven ponds are lined. The two unlined ponds are the original ponds that were first constructed in 1995/1996. They are the last ponds in the sequence and are only anticipated to fill in the winter months when evaporation is lowest or when village occupancy rates are high.

Gravity sewerage mains have been utilised to transfer the raw sewerage to the septic tanks except where gravity flows are not achievable, then sewerage pump pits have been installed to transfer the raw sewerage. As sludge accumulates within the septic tanks, it has been periodically pumped out and disposed at an approved site. There are three independent septic tanks collecting raw sewage from different areas of the village. The three independent effluent transfer pipes (one from each septic tank) all discharge into the evaporation ponds.

Used tyre storage Used tyres are stored onsite until a suitable number are stockpiled. The used tyres are then disposed of at SDGM in accordance with Part 6 of the Environmental Protection Regulations 1987 or transported offsite for appropriate disposal.

September 2015 Amendment This Licence amendment (September 2015) authorised the construction of 2 gas fired generators of 4 MW capacity each, thereby increasing the power generation capacity under category 52. An increase to the production capacity of category 5 has also been included. This did not result in any change to the existing TSF operation, with the production increase achieved through optimisation of the existing plant. Associated with these Licensee requested amendments were DER changes to the standard conditions and formatting of the licence.

February 2017 Amendment AGAA submitted an application on 30 November 2016 to amend their Licence to authorise two changes to their Premises: 1. Upgrade the processing plant by constructing and operating a new flotation circuit, a new ultra-fine grinding circuit, and additional flotation reagents storage and handling facilities. 2. Construct and operate 3 additional gas generators, thereby increasing the capacity of category 52 (electric power generation) to 48 MW. There is no change to the authorised tailings discharge rates or the category 5 capacity due to the process plant upgrade.

The Premises boundary has also changed at this amendment, with the inclusion of M39/1102 and M39/1103, recently acquired by the Licensee. In addition to the requested amendments, DER has removed conditions that relate to works completed (including improvements) since the amendment of September 2015. DER has also made some administrative changes to some of the standard conditions, following review as to their validity and enforceability. The licences and works approvals issued for the Premises for the 5 licences prior to issue of this Licence are:

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Instrument log Instrument Issued Description L6824/1996/7 17/02/2003 Licence re-issue L6824/1996/8 07/02/2004 Licence re-issue L6824/1996/9 07/02/2005 Licence re-issue W4454/2008/1 06/10/2008 L6824/1996/10 06/02/2009 Licence re-issue L8579/2011/1 26/07/2011 New licence after previous licence ceased to exist W5227/2013/1 10/09/2012 Approval for sewage facility evaporation ponds W5486/2013/1 14/10/2013 Approval for stage 9 of CTD TSF W5564/2013/1 27/01/2014 Approval for construction of stormwater and drainage channel W5578/2014/1 03/03/2014 Approval for the expansion of CTD TSF L8579/2011/2 10/07/2014 Licence re-issue and conversion to new format L8579/2011/2 10/09/2015 Amendment to increase capacity of categories 5 and 52 and authorise construction of additional gas generators. L8579/2011/2 27/02/2017 Amendment to increase capacity of category 52 and authorise construction of 3 additional gas generators. Change to premises boundary and DER administrative changes.

Severance It is the intent of these Licence conditions that they shall operate so that, if a condition or a part of a condition is beyond the power of this Licence to impose, or is otherwise ultra vires or invalid, that condition or part of a condition shall be severed and the remainder of these conditions shall nevertheless be valid to the extent that they are within the power of this Licence to impose and are not otherwise ultra vires or invalid.

END OF INTRODUCTION Licence conditions

1 General

1.1 Interpretation

1.1.1 In the Licence, definitions from the Environmental Protection Act 1986 apply unless the contrary intention appears.

1.1.2 For the purposes of this Licence, unless the contrary intention appears:

‘Act’ means the Environmental Protection Act 1986;

‘annual period’ means the inclusive period from 1 January until 31 December in the following year;

‘Annual Audit Compliance Report’ means a report in a format approved by the CEO as presented by the licensee or as specified by the CEO from time to time and published on the Department’s website;

‘AS 4323.1’ means the Australian Standard AS4323.1 Stationary Source Emissions Method 1: Selection of sampling positions;

‘AS/NZS 5667.1’ means the Australian Standard AS/NZS 5667.1 Water Quality – Sampling – Guidance of the Design of sampling programs, sampling techniques and the preservation and handling of samples;

‘AS/NZS 5667.4’ means the Australian Standard AS/NZS 5667.4 Water Quality – Sampling – Guidance on sampling from lakes, natural and man-made;

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‘AS/NZS 5667.6’ means the Australian Standard AS/NZS 5667.6 Water Quality – Sampling – Guidance on sampling of rivers and streams;

‘AS/NZS 5667.11’ means the Australian Standard AS/NZS 5667.11 Water Quality – Sampling – Guidance on sampling of groundwaters;

‘averaging period’ means the time over which a limit is measured or a monitoring result is obtained;

‘CEMS’ means continuous emissions monitoring system;

‘CEMS Code’ means the current version of the Continuous Emission Monitoring System (CEMS) Code for Stationary Source Air Emissions, Department of Environment & Conservation, Government of Western Australia;

‘CEO’ means Chief Executive Officer of the Department of Environment Regulation;

‘CEO’ for the purpose of correspondence means;

Chief Executive Officer Department Administering Div. 3 Pt. V Environmental Protection Act 1986 Locked Bag 33 CLOISTERS SQUARE WA 6850 Email: [email protected];

‘commissioning’ means the process of operation and testing that verifies the works and all relevant systems, plant, machinery and equipment have been installed and are performing in accordance with the design specification set out in the Licence amendment application;

‘controlled waste’ has the definition in Environmental Protection (Controlled Waste) Regulations 2004;

‘environmentally hazardous material’ means material (either solid or liquid raw materials, materials in the process of manufacture, manufactured products, products used in the manufacturing process, by-products and waste) which if discharged into the environment from or within the premises may cause pollution or environmental harm.

‘freeboard’ means the distance between the maximum water surface elevations and the top of retaining banks or structures at their lowest point;

‘hardstand’ means a surface with a permeability of 10-9 metres/second or less;

‘Licence’ means this Licence numbered L8579/2011/2 and issued under the Act;

‘Licensee’ means the person or organisation named as Licensee on page 1 of the Licence;

‘NATA’ means the National Association of Testing Authorities, Australia;

‘NATA accredited’ means in relation to the analysis of a sample that the laboratory is NATA accredited for the specified analysis at the time of the analysis;

‘NOx’ means oxides of nitrogen, calculated as the sum of nitric oxide and nitrogen dioxide and expressed as nitrogen dioxide;

‘PM’ means total particulate matter including both solid fragments of material and miniscule droplets of liquid;

‘PM10’ means particles with an aerodynamic diameter of less or equal to 10 m;

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‘Premises’ means the area defined in the Premises Map in Schedule 1 and listed as the Premises address on page 1 of the Licence;

‘quarterly’ means the 4 inclusive periods from 1 January to 31 March, 1 April to 30 June, 1 July to 30 September and 1 October to 31 December;

‘Schedule 1’ means Schedule 1 of this Licence unless otherwise stated;

‘Schedule 2’ means Schedule 2 of this Licence unless otherwise stated;

‘spot sample’ means a discrete sample representative at the time and place at which the sample is taken;

‘STP dry’ means standard temperature and pressure (0oCelsius and 101.325 kilopascals respectively), dry;

‘TSF’ means tailings storage facility; and

‘WWTP’ means wastewater treatment plant.

1.1.3 Any reference to an Australian or other standard in the Licence means the relevant parts of the standard in force from time to time during the term of this Licence.

1.1.4 Any reference to a guideline or code of practice in the Licence means the version of that guideline or code of practice in force from time to time, and shall include any amendments or replacements to that guideline or code of practice made during the term of this Licence.

1.2 General conditions

1.2.1 The Licensee shall immediately recover, or remove and dispose of spills of environmentally hazardous materials which occur outside an engineered containment system.

1.3 Premises operation

1.3.1 The Licensee shall ensure that where wastes produced on the Premises are not taken off-site for lawful use or disposal, they are managed in accordance with the requirements in Table 1.3.1.

Table 1.3.1: Management of waste Waste type Management strategy Requirements Clean fill3 All waste types Disposal of waste by landfilling shall only take place within the Type 1 inert landfill area shown on the Premises map in Schedule 1. 3 Receipt, handling and waste The separation distance between the base of the landfill and disposal of waste by Putrescible the highest groundwater level shall be not less than 3 metres. 3 landfilling waste No waste shall be temporarily stored or landfilled within 35 Contaminated metres from the boundary of the Premises. solid waste Must meet the acceptance criteria for a Class II3 landfill Biological and physical 3 Sewage 131 m per day treatment No more than 4.5 Mtpa Thickening and Tailings Disposal of waste shall only take place within the TSF labelled containment in TSF CTD as shown on the Premises map in Schedule 1. Not more than 1000 tyres shall be stored at the premises at any one time; Used tyre stacks shall not exceed 100 m2 in area and 4 metres in height; Used tyres Storage and burial Used tyres must be stacked on their side walls or if stored on their treads, area baled with a securing device made from a non-combustible material; Used tyres shall only be buried in the waste rock dump.

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Note 1: Requirements for landfilling tyres are set out in Part 6 of the Environmental Protection Regulations 1987. Note 2: Additional requirements for the acceptance and landfilling of controlled waste (including asbestos and tyres) are set out in the Environmental Protection (Controlled Waste) Regulations 2004. Note 3: Defined in the Landfill Definitions

1.3.2 The Licensee shall ensure that cover is applied and maintained on landfilled wastes in accordance with Table 1.3.2 and that sufficient stockpiles of cover are maintained on site at all times.

Table 1.3.2: Cover requirements Waste type Cover requirements Putrescible wastes To be covered fortnightly with sufficient quantities of Type 1 inert waste, clean fill or other appropriate cover material to prevent the spread of fire and harbouring of disease vectors. Inert waste type 1 No cover required Note 1: Additional requirements for the covering of tyres are set out in Part 6 of the Environmental Protection Regulations 1987.

1.3.3 The Licensee shall take all reasonable and practical measures to ensure that no windblown waste escapes from the Premises and that wind-blown waste is collected on at least a weekly basis and returned to the tipping area.

1.3.4 The Licensee shall ensure that all pipelines containing environmentally hazardous substances are either: (a) equipped with telemetry systems and pressure sensors along pipelines to allow the detection of leaks and failures; (b) equipped with automatic cut-outs in the event of a pipe failure; or (c) provided with secondary containment sufficient to contain any spill for a period equal to the time between inspections.

1.3.5 The Licensee shall ensure that any saline dewatering effluent shall only be discharged in the following manner: (a) used for dust suppression in a manner that minimises damage to surrounding vegetation; or (b) discharged to Lake Carey in accordance with the conditions in section 2 of this Licence.

1.3.6 The Licensee shall ensure that tailings, decant water and effluent are only discharged into containment cells or ponds with the relevant infrastructure requirements and at the locations specified in Table 1.3.3.

Table 1.3.3: Containment infrastructure Storage vessel or Material Requirements compound WWTP evaporation ponds Primary treated sewage Clay lined or equivalent one, two, three, six and seven WWTP over-flow ponds four Over-flow of primary treated None specified and five sewage from evaporation ponds Process water pond CTD TSF return water, Lined with at least 0.5 m of clay with a borefield and mine dewater permeability of <10-9 m/s or equivalent Water storage ponds/ Mine dewater None specified dewatering ponds CTD TSF Tailings Lined with 1 mm HDPE to achieve a permeability of at least <10-7 m/s or equivalent

1.3.7 The Licensee shall manage all containment infrastructure in Table 1.3.3 such that a minimum top of embankment freeboard of 300 mm or a 1 in 100 year/72 hour storm event (whichever is greater) is maintained

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1.3.8 The Licensee shall manage TSFs such that: (a) a seepage collection and recovery system is provided and used to capture seepage from the TSF; (b) seepage is returned to the TSF or re-used in process; and (c) the supernatant pond on the TSF is minimised as far as practicable.

1.3.9 The Licensee shall: (a) undertake inspections as detailed in Table 1.3.4; (b) where any inspection identifies that an appropriate level of environmental protection is not being maintained, take corrective action to mitigate adverse environmental consequences as soon as practicable; (c) maintain a digital or written log of all inspections undertaken; (d) twice daily inspections to be undertaken within a 24 hour period up to 16 hours apart; and (e) daily inspections to be undertaken within a 24 hour period.

Table 1.3.4: Inspection of infrastructure Scope of inspection Type of inspection Frequency of inspection Tailings pipelines Visual integrity Twice daily Return water lines Visual integrity Twice daily Visual to confirm required freeboard Embankment freeboard capacity is available Daily Tailings deposition Visual assessment of beaching Daily Visual assessment of pond size and Decant pond position Daily Water storage ponds/ Visual assessment of freeboard dewatering ponds Daily

1.3.10 The Licensee must not depart from the specifications in Column 1 and 2 for the infrastructure in each row of Table 1.3.5 except: (a) where such departure is minor in nature and does not materially change or affect the infrastructure; or (b) where such departure improves the functionality of the infrastructure and does not increase risks to public health, public amenity or the environment; and in accordance with all other conditions in this Licence.

Table 1.3.5: Works specifications Column 1 Column 2 Infrastructure Specifications (Design and Construction) 4 MW Gas generator 3 x 4MW CAT CG260-16

engine x 3 Located in new building (Station D), 30m north of existing Station C, as shown in Figure 2 Vent emissions to be exhausted to air via a 13m high stack

2 Emissions

2.1 General

2.1.1 The Licensee shall record and investigate the exceedance of any descriptive or numerical limit specified in any part of this Licence.

2.2 Point source emissions to air

2.2.1 The Licensee shall ensure that where waste is emitted to air from the emission points in Table 2.2.1 it is done so in accordance with the conditions of this Licence.

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Table 2.2.1: Emission points to air Emission point Emission Point Emission point Source, including any reference height (m) abatement A Station – 9 engines Diesel engine exhaust - stack 10 Cummins KTA50 G3 Generator #1 Generator #2 Generator #3 Generator #4 Generator #5 Generator #6 Generator #7 Generator #8 Generator #9 B Station – 9 engines Gas engine exhaust stack 10 MWM TCG2020 V16K Generator #10 Generator #11 Generator #12 Generator #13 Generator #14 Generator #15 Generator #16 Generator #17 Generator #18 C Station – 2 engines Diesel engine exhaust – stack 10 Cummins KTA50 G3 (x2) Generator #22 TBD620 V16 G3 (x2) Generator #23 C Station – 4 engines Gas engine exhaust – stack 10 MWM TCG2020 V16K Generator #21 Generator #24 Generator #25 Generator #26 C Station - 2 engines Gas engine exhaust - stack 13 Cat CG260 - 16 Generator #19 Generator #20 D Station – 3 engines Gas engine exhaust – stack 13 Cat CG260 - 16 Generator #27 Generator #28 Generator #29 Carbon Regen Kiln Carbon regeneration kiln stack 19 Carbon regeneration kiln Gold room Gold furnace stack 8 Gold furnace

2.3 Point source emissions to surface water

2.3.1 The Licensee shall ensure that where waste is emitted to surface water from the emission points in Table 2.3.1 and identified on the map of emission points in Schedule 1 it is done so in accordance with the conditions of this Licence.

Table 2.3.1: Emission points to surface water Emission point reference Description Source including abatement Lake Carey discharge site Mine dewater discharge from the open pit Mine dewater and underground workings

3 Monitoring

3.1 General monitoring

3.1.1 The licensee shall ensure that: (a) all water samples are collected and preserved in accordance with AS/NZS 5667.1; (b) all surface water sampling is conducted in accordance with AS/NZS 5667.4, AS/NZS 5667.6 or AS/NZS 5667.9 as relevant;

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(c) all groundwater sampling is conducted in accordance with AS/NZS 5667.11; and (d) all laboratory samples are submitted to and tested by a laboratory with current NATA accreditation for the parameters being measured.

3.1.2 The Licensee shall ensure that: (a) monthly monitoring is undertaken at least 15 days apart; (b) quarterly monitoring is undertaken at least 45 days apart; and (c) six monthly monitoring is undertaken at least 5 months apart; annual monitoring is undertaken at least 9 months apart.

3.1.3 The Licensee shall ensure that all monitoring equipment used on the Premises to comply with the conditions of this Licence is calibrated in accordance with the manufacturer’s specifications and the requirements of the Licence.

3.1.4 The Licensee shall, where the requirements for calibration cannot be practicably met, or a discrepancy exists in the interpretation of the requirements, bring these issues to the attention of the CEO accompanied with a report comprising details of any modifications to the methods.

3.2 Monitoring of point source emissions to air

3.2.3 The Licensee shall undertake the monitoring in Table 3.2.1 according to the specifications in that table.

Table 3.2.1: Monitoring of point source emissions to air Emission Parameter Units1 Frequency 2 Method point reference Existing Gas Volumetric flow rate m3/s n/a USEPA Method 2 Gensets Oxides of nitrogen (NOx) mg/m3 Annually Modified USEPA Method 7E (engine Carbon monoxide (CO) Modified USEPA Method 10 exhaust) New Gas Volumetric flow rate m3/s n/a USEPA Method 2 Gensets Oxides of nitrogen (NOx) mg/m3 Once during Modified USEPA Method 7E #27 - #29 Carbon monoxide (CO) commissioning (at Modified USEPA Method 10 full load conditions) and then annually Note 1: All units are referenced to STP dry Note 2: Monitoring shall be undertaken to reflect normal operating conditions and any limits or conditions on inputs or production.

3.2.4 The Licensee shall ensure that sampling required under Condition 3.2.3 of the Licence is undertaken at sampling locations in accordance with the AS 4323.1 or relevant part of the CEMS Code.

3.2.5 The Licensee shall ensure that all non-continuous sampling and analysis undertaken pursuant to condition 3.2.3 is undertaken by a holder of NATA accreditation for the relevant methods of sampling and analysis.

3.3 Monitoring of point source emissions to surface water

3.3.1 The Licensee shall undertake the monitoring in Table 3.3.1 according to the specifications in that table.

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Table 3.3.1: Monitoring of point source emissions to surface water Emission point Parameter Units Frequency reference Water from the Volume tonnes Monthly mine dewatering pH - Quarterly program discharged Total dissolved solids (TDS), sodium, potassium, mg/L to Lake Carey calcium, magnesium, chloride, carbonate, bicarbonate, sulfate, nitrate, iron, manganese, strontium

3.4 Process monitoring

3.4.1 The Licensee shall undertake the monitoring in Table 3.4.1 according to the specifications in that table.

Table 3.4.1: Process monitoring Process description Parameter Units Frequency Method Tailings deposition Volumes of tailings deposited into the TSF m3 Monthly None Volumes of water recovered from the TSF m3 Monthly specified Volumes of seepage recovered m3 Monthly

3.5 Ambient environmental quality monitoring

3.5.1 The Licensee shall undertake the monitoring in Table 3.5.1 according to the specifications in that table.

Table 3.5.1: Monitoring of ambient groundwater quality Monitoring point Parameter Units Averaging Frequency reference and period location Monitoring bores TSF1: pH - Spot sample Quarterly MB1-MB4, MB6-MB7, Standing water level (SWL) m(AHD) MB9-MB12 TDS, weak acid dissociable mg/L cyanide (WAD-CN), sodium, potassium, calcium, magnesium, arsenic, chromium, copper, lead, manganese, nickel, selenium, boron. MB5 and MB8 SWL m(AHD) Monitoring bores CTD: pH - CTDMB2, CTDMB2A, SWL m(AHD) CTDMB3, CTDMB4, TDS, WAD-CN, sodium, mg/L CTDMB7, CTDMB11A, potassium, calcium, CTDMB11B, magnesium, arsenic, CTDMB13, CTDMB14, chromium, copper, lead, CTDMB15A, manganese, nickel, selenium, CTDMB15B, boron. CTDMB15C, CTDMB16, CTDMB17A, CTDMB17B

3.5.2 The Licensee shall undertake an annual dewatering discharge report to show that mine dewatering discharges to the receiving environment are not having any adverse environmental impact. The assessment shall include: (a) a site description (aerial photographs etc), including plan showing dewatering discharge point(s); (b) topographical and meteorological data; (c) hydrology – catchment, rainfall and evaporation, runoff etc; (d) significance of waterbody/watercourse with respect to flora and fauna; (e) waterbody/watercourse levels as a result of rainfall events (with respect to the seasonality of the waterbody/watercourse);

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(f) dewater discharge (volume and quality) as compared to runoff into the waterbody/watercourse and water quality (salt and metals) of the receiving waters; (g) the area of the waterbody/watercourse likely to be affected by the dewater discharge and effects on waterbody/watercourse levels resulting from the discharge; (h) the potential for water to flow along/out of the receiving waterbody/watercourse; (i) if dewatering occurs to a creek system (permanent or ephemeral), it will also be necessary to consider the consequences of the alteration of the receiving environment, especially with respect to the impacts on vegetation and existing ecosystems; (j) water balance estimates – including dewater and non-dewater scenarios (with and without consideration of runoff events); (k) chemistry of the waterbody/watercourse – including dewater and non-dewater scenarios (with and without consideration of runoff events); (l) a comparison between each year’s monitoring data and that of all available data from previous years since mining commenced; and (m) findings (including trends), conclusions and recommendations.

3.5.3 The Licensee shall undertake an annual assessment of vegetation within the zone of influence of the CTD TSF. The assessment shall: (a) photograph and record the presence and condition of key vegetation features within the zone of influence; (b) compare the results of the assessment against previous years assessments and identify whether any deterioration in the presence and/or quality of vegetation has taken place; and (c) be undertaken by a person suitably qualified in vegetation identification and sampling.

4 Information

4.1 Records

4.1.1 All information and records required by the Licence shall: (a) be legible; (b) if amended, be amended in such a way that the original and subsequent amendments remain legible or are capable of retrieval; (c) except for records listed in 4.1.1(d) be retained for at least 6 years from the date the records were made or until the expiry of the Licence or any subsequent licence; and (d) for those following records, be retained until the expiry of the Licence and any subsequent licence: (i) off-site environmental effects; or (ii) matters which affect the condition of the land or waters.

4.1.2 The Licensee must submit to the CEO an Annual Audit Compliance Report indicating the extent to which the Licensee has complied with the conditions in this Licence for the annual period.

4.1.3 The Licensee shall implement a complaints management system that as a minimum records the number and details of complaints received concerning the environmental impact of the activities undertaken at the Premises and any action taken in response to the complaint.

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4.2 Reporting

4.2.1 The Licensee shall submit to the CEO an Annual Environmental Report within 60 calendar days after the end of the annual period. The report shall contain the information listed in Table 4.2.1 in the format or form specified in that table.

Table 4.2.1: Annual Environmental Report Condition or table Parameter Format or form1 (if relevant) - Summary of any failure or malfunction of any pollution control None specified equipment and any environmental incidents that have occurred during the annual period and any action taken - Operating hours for diesel generators As a percentage of the total operating time for all generators Table 3.2.1 Nitrogen oxides, carbon monoxide None specified Table 3.3.1 Volume, pH, TDS, sodium, potassium, calcium, magnesium, None specified chloride, carbonate, bicarbonate, sulfate, nitrate, iron, manganese, strontium Table 3.4.1 Process monitoring None specified Table 3.5.1 Ambient groundwater monitoring None specified 3.5.2 Annual dewatering discharge report None specified 3.5.3 Annual vegetation assessment report None specified 4.1.2 Compliance Annual Audit Compliance Report (AACR) 4.1.3 Complaints summary None specified

4.2.2 The Licensee shall ensure that the Annual Environmental Report also contains: (a) an assessment of the information contained within the report against previous monitoring results and Licence limits and/or targets; and (b) a list of any original monitoring reports submitted to the Licensee from third parties for the annual period and make these reports available on request.

4.2.3 The Licensee shall submit a compliance document to the CEO, following the construction of the power station upgrade works as specified in Table 1.3.5 and prior to commissioning of the same.

4.2.4 The compliance document shall: (a) certify that the works were constructed in accordance with the conditions of the Licence; (b) be signed by a person authorised to represent the Licensee and contain the printed name and position of that person within the company.

4.2.5 The Licensee shall submit a commissioning report for the new gas generators, to the CEO within 3 months of the completion of commissioning.

4.2.6 The Licensee shall ensure the report includes:

(a) a summary of the monitoring results recorded under condition 3.2.1; (b) any original monitoring reports submitted to the Licensee from third parties for the commissioning period; (c) a summary of the environmental performance of the gas generators as installed, against the design specification set out in the application; (d) a review of performance against the condition 1.3.10; and (e) where they have not been met, measures proposed to meet the design specification and/or conditions, together with timescales for implementing the proposed measures.

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4.3 Notification

4.3.1 The Licensee shall ensure that the parameters listed in Table 4.3.1 are notified to the CEO in accordance with the notification requirements of the table.

Table 4.3.1: Notification requirements Condition Parameter Notification requirement1 Format or table or form2 (if relevant) 2.1.1 Breach of any limit specified in Part A: As soon as practicable but no later N1 the Licence than 5pm of the next usual working day.

Part B: As soon as practicable

3.1.4 Calibration report As soon as practicable. None specified - Commencement of 7 days prior to start None commissioning specified Completion of commissioning 7 days after completion Note 1: Notification requirements in the Licence shall not negate the requirement to comply with s72 of the Act Note 2: Forms are in Schedule 2

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Schedule 1: Maps

Premises map

The Premises is shown in the map below. The blue line depicts the Premises boundary.

Figure 1. Prescribed Premises’ Map

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Maps of emission points

The locations of the emission points defined in Table 2.2.1 are shown below.

Figure 2. Gold Processing Emission Points to Air

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The location of the emission point defined in Table 2.3.1 is shown below.

Figure 3. Dewatering discharge site to Lake Carey

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Map of monitoring locations

The locations of the monitoring points defined in Table 3.5.1 are shown below.

Figure 4. Groundwater monitoring bores’ locations.

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Schedule 2: Reporting & notification forms

These forms are provided for the proponent to report monitoring and other data required by the Licence. They can be requested in an electronic format.

Licence: L8579/2011/2 Licensee: AngloGold Ashanti Australia Limited Form: N1 Date of breach:

Notification of detection of the breach of a limit.

These pages outline the information that the operator must provide. Units of measurement used in information supplied under Part A and B requirements shall be appropriate to the circumstances of the emission. Where appropriate, a comparison should be made of actual emissions and authorised emission limits.

Part A Licence Number Name of operator Location of Premises Time and date of the detection

Notification requirements for the breach of a limit Emission point reference/ source Parameter(s) Limit Measured value Date and time of monitoring Measures taken, or intended to be taken, to stop the emission

Part B Any more accurate information on the matters for notification under Part A.

Measures taken, or intended to be taken, to prevent a recurrence of the incident.

Measures taken, or intended to be taken, to rectify, limit or prevent any pollution of the environment which has been or may be caused by the emission.

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The dates of any previous N1 notifications for the Premises in the preceding 24 months.

Name Post Signature on behalf of AngloGold Ashanti Australia Limited Date

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Decision Document

Environmental Protection Act 1986, Part V

Proponent: AngloGold Ashanti Australia Limited

Licence: L8579/2011/2

Registered office: 44 St Georges Tce PERTH WA 6000

ACN: 008 737 424

Issue date: Thursday, 10 July 2014

Commencement date: Monday, 21 July 2014

Expiry date: Friday, 20 July 2029

Decision

Based on the assessment detailed in this document the Department of Environment Regulation (DER), has decided to issue an amended licence. DER considers that in reaching this decision, it has taken into account all relevant considerations and legal requirements and that the Licence and its conditions will ensure that an appropriate level of environmental protection is provided.

Decision Document prepared by: Louise Lavery Licensing Officer

Decision Document authorised by: Tim Gentle Delegated Officer

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Contents

Decision Document 1 Contents 2 1 Purpose of this Document 2 2 Administrative summary 2 3 Executive summary of proposal and assessment 3 4 Decision table 6 5 Advertisement and consultation table 14 6 Risk Assessment 15 Appendix A 16

1 Purpose of this Document

This decision document explains how DER has assessed and determined the application and provides a record of DER’s decision-making process and how relevant factors have been taken into account. Stakeholders should note that this document is limited to DER’s assessment and decision making under Part V of the Environmental Protection Act 1986. Other approvals may be required for the proposal, and it is the proponent’s responsibility to ensure they have all relevant approvals for their Premises.

2 Administrative summary

Administrative details

Works Approval Application type New Licence Licence amendment Works Approval amendment Assessed design Category number(s) capacity Activities that cause the premises to become 05 4 500 000 tonnes per year prescribed premises 06 5 000 000 tonnes per year 52 48 MW 54 190 m3 per day 57 1 000 tyres 64 5 000 tonnes per year Application verified Date: N/A Application fee paid Date: N/A Yes No N/A Works Approval has been complied with Compliance Certificate received Yes No N/A Commercial-in-confidence claim Yes No

Commercial-in-confidence claim outcome

Is the proposal a Major Resource Project? Yes No Was the proposal referred to the Environmental Yes No Referral decision No: Protection Authority (EPA) under Part IV of the

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Environmental Protection Act 1986? Managed under Part V Assessed under Part IV Ministerial statement No: Is the proposal subject to Ministerial Conditions? Yes No EPA Report No:

Does the proposal involve a discharge of waste Yes No into a designated area (as defined in section 57 of the Environmental Protection Act 1986)? Department of Water consulted Yes No

Is the Premises within an Environmental Protection Policy (EPP) Area Yes No If Yes include details of which EPP(s) here.

Is the Premises subject to any EPP requirements? Yes No

If Yes, include details here, eg Site is subject to SO2 requirements of Kwinana EPP.

3 Executive summary of proposal and assessment

AngloGold Ashanti Australia Limited’s (AGAA) Sunrise Dam Gold Mine (SDGM) operation is located 55 km south of Laverton in Western Australia. It is located on the eastern shore of Lake Carey and lies within the Mt Weld Pastoral Lease. The project comprises of open cut and underground mining operations, processing operations and ancillary services including a natural gas/diesel power station, paste plant, administration facilities, aerodrome and accommodation village.

The following prescribed activities occur at SDGM:

A paddock style TSF has been decommissioned and final rehabilitation works were completed in early 2013. No operational activities are conducted on this TSF other than monitoring.

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A fourth power station, Station D, has been authorised to be constructed and operated by EDL as part of the February 2017 amendment. The capacity of category 52 was increased by 12MW of gas generation to 48 MW, consisting of 10.5 MW back up diesel and 32.5 MW gas generation.

September 2015 Amendment This Licence amendment (September 2015) authorised the construction of 2 gas fired generators of 4 MW capacity each, thereby increasing the power generation capacity under category 52. Existing diesel generation now provides provision for back up supply in the event of an outage to the gas supply to site. It is anticipated that the gas generators (existing and new) will supply 98% of the load.

An increase to the production capacity of category 5 was also included. This did not result in any change to the existing TSF operation, with the production increase achieved through optimisation of the existing plant. Associated with these Licensee requested amendments were DER changes to the standard conditions and formatting of the licence.

February 2017 Amendment

AGAA submitted an application on 30 November 2016 to amend their Licence to authorise two changes to their Premises: 1. Upgrade the processing plant by constructing and operating a new flotation circuit, a new ultra-fine grinding circuit, and additional flotation reagents storage and handling facilities.

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2. Construct and operate 3 additional gas generators, thereby increasing the capacity of category 52 (electric power generation) to 48 MW. There is no change to the authorised tailings discharge rates or the category 5 capacity due to the process plant upgrade. As the process plant upgrade does not result in changes to the volume or nature of wastes already authorised by the Licence, section 53 of the Environmental Protection Act 1986 does not apply for these changes. The Premises boundary has changed at this amendment, with the inclusion of M39/1102 and M39/1103, recently acquired by the Licensee. In addition to the requested amendments, DER has removed conditions that relate to works completed (including improvements) since the amendment of September 2015. DER has also made some administrative changes to standard conditions, including removal where deemed necessary, following review as to the conditions’ validity and enforceability.

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4 Decision table

All applications are assessed in line with the Environmental Protection Act 1986, the Environmental Protection Regulations 1987 and DER’s Operational Procedure on Assessing Emissions and Discharges from Prescribed Premises. Where other references have been used in making the decision they are detailed in the decision document.

DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence Premises - February 2017 Amendment Email from N Galli, boundary Schedule 1 M39/1102 and M39/1103 are now included within the Premises boundary, having been AGAA “Proof of acquired by the Licensee on 25/05/2016 and 3/6/2016, respectively. Expiry dates are tenure for Sunrise 24/05/2037 and 02/06/2037. Dam Licence Amendment” to DER sent 24/02/2017, 2:44 PM. DER document reference: A1383528 General L1.2.3 September 2015 Amendment N/A conditions Condition 1.2.5 of the previous licence has been included as condition 1.2.3 and not reassessed. February 2017 Amendment Former condition DER has reviewed standard condition L1.1.5: L1.1.5 “Nothing in the Licence shall be taken to authorise any emission that is not mentioned in the Licence, where the emission amounts to: (a) pollution; (b) unreasonable emission; (c) discharge of waste in circumstances likely to cause pollution; or (d) being contrary to any written law.” and determined it is an explanatory statement designed to provide clarification on the operation of the Licence, and as such is not enforceable. DER has now removed this

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DECISION TABLE

Former condition Former condition L1.2.1: L1.2.1 “The Licensee shall operate and maintain all pollution control and monitoring equipment to the manufacturer’s specification or any relevant and effective internal management system. “ has been removed from the Licence as the pollution control and monitoring equipment that is subject to this condition is not specified and the internal management system is subject to a subjective test of being “effective”. Consequently the condition is considered not enforceable as it is not clear.

Former condition L1.2.3:

Former condition “The Licensee shall implement all practical measures to prevent stormwater run- L1.2.3 off becoming contaminated by the activities on the Premises.” has been removed from the Licence as the condition does not specify clearly which stormwater infrastructure is to be utilised or maintained and does not clearly specify which management actions are required to determine compliance with this condition. Existing provisions under the Environmental Protection Act 1986 are considered to adequately regulate discharges to the environment potentially arising from contaminated stormwater.

Premises L1.3.1 September 2015 Amendment Application operation A change was made to Table 1.3.1 to increase the maximum amount of tailings supporting permitted to be discharged into the TSF from 3.7 Mtpa to 4.5 Mtpa. Whilst the production documentation capacity of category 5 increased to 4.5 Mtpa, this represented only a 21% increase and was due to optimisation within the plant. No infrastructure changes were required or changes to the existing TSF operation.

No other changes have been made to this table and other waste management practices

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DECISION TABLE

L1.3.2 – L1.3.3 These conditions relate to landfill management and have not been re-assessed. N/A L1.3.4 This condition relates to pipeline operation and infrastructure at Sunrise Dam and has N/A not been re-assessed. L1.3.5 This condition is as per the previous licence and has not been re-assessed. N/A L1.3.6 – L1.3.9 This condition describes the containment infrastructure in use at the Premises. N/A Complementary freeboard, TSF management and inspection requirements have not been re-assessed as part of this amendment. L1.3.10, L1.3.11 This condition is specified to require construction of the new gas generators in accord Application with the submitted application. supporting documentation Emissions L2.1.1 Descriptive limits will be set through the licence and therefore condition regarding N/A general recording and investigation of exceedances of limits has been included.

February 2017 Amendment A minor wording change has been made to this condition to clarify that the requirement to investigate exceedances of any limit set is required for all sections of the Licence.

Point source L2.2.1 and L3.2.1 September 2015 Amendment Appendix A emissions to Power Generation air including An application was received 26 June 2015 to install 2 x 4MW gas generators. DER’s monitoring assessment and decision making is included as Appendix A.

L2.2.1 and L4.1.1 Gold Processing

The September 2015 amendment dentified that there are two existing point source

emissions to air that were previously not on the Licence: emissions through a stack from

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DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence the carbon regeneration kiln and emissions through a stack from the gold furnace. IR 2 of Table 4.1.1 in improvement condition L4.1.1 has been added to the Licence to require the Licensee to provide information to aid in assessment of the significance of these emission points.

February 2017 Amendment Power Generation Appendix A An application was received 30 November 2016 to install 3 x 4MW gas generators in a new power station building, Station D. DER’s assessment and decision making is included as Appendix A. Point source L 2.3.1, L3.3.1 Excess mine dewater is discharged into Lake Carey. This discharge is authorised under General provisions of emissions to condition 2.3.1 and required to be monitored in accordance with condition 3.3.1. This the Environmental surface water emission has not been re-assessed as part of the Licence amendment. Protection Act 1986 including monitoring Point source N/A No point source emissions to groundwater occur at the Premises and no conditions are N/A emissions to included in this section. groundwater including monitoring Emissions to N/A No significant emissions to land occur at the Premises and there are no conditions in this N/A land including section. monitoring Fugitive N/A September 2015 Amendment N/A emissions DER has made an administrative change to the conditions in relation to fugitive dust emissions. Where low risk exists, no licence conditions are specified. Odour N/A No significant odour emissions occur at the Premises. No conditions relating to odour N/A were included on the previous licence. Noise N/A Noise conditions have not been re-assessed as part of this licence amendment. No N/A

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DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence conditions relating to noise were included on the previous licence. Monitoring L3.1.1 - L3.1.5 September 2015 Amendment General provisions of general These conditions provide general requirements for conduct of the monitoring programs the Environmental and related equipment in section 3 of the Licence. These conditions are unchanged from Protection Act 1986 previous Licence.

February 2017 Amendment DER has reviewed condition 3.1.3: L3.1.3 The Licensee shall record production or throughput data and any other process parameters relevant to any non-continuous or CEMS monitoring undertaken. and has determined that it is not enforceable as it does not clearly specify the parameters that need to be recorded. It has been removed from the Licence. Monitoring of N/A No conditions relating to monitoring of inputs and outputs were included on the previous N/A inputs and licence and this amendment does not require new conditions in this section outputs Process L3.4.1 Recording of tailings deposited to the TSF and water recovery from the TSF is required N/A monitoring by this condition. This condition is unchanged from the previous licence.

Ambient L3.5.1, L3.5.2, September 2015 Amendment N/A quality L3.5.3 Quarterly ambient groundwater monitoring is detailed in condition 3.5.1 whilst condition monitoring 3.5.2 specifies the requirements for the assessment of ecological impact to Lake Carey due to discharge of mine dewater. Condition 3.5.3 details the vegetation monitoring program to assess potential impacts within the zone of influence of the TSF. These conditions have not been re-assessed as part of this amendment.

February 2017 Amendment No changes have been made to the ambient quality monitoring program as a result of this amendment. Meteorological N/A No meteorological conditions are required for the Licence. N/A

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DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence monitoring Improvements L4.1.1 September 2015 Amendment Application An improvement condition was included as part of the September 2015 amendment to supporting require the Licensee to: information (a) submit a commissioning plan for the new gas generators, prior to the commencement of commissioning. The plan includes the requirement to detail the stack monitoring program to be completed to verify that new generators can meet the emission design criteria; and (b) submit information on gold processing rates and feed type(s) to allow an assessment of the significance of the emission points to air from the carbon regeneration kiln and gold furnace and basis for a decision to conduct investigatory stack testing. Former condition February 2017 Amendment Energy L4.1.1 Condition 4.1.1 has been removed from the Licence as the requested information has Developments Ltd been received and deemed acceptable to DER. The commissioning plan for the gas Australia (2015) generators installed in late 2015, as required by IR 1, was received 12 November 2015 Project Delivery (DER document reference: A1007051) Commissioning Plan – Sunrise Dam, IR2 information was received 18 November 2015 and indicated that processing rates for November 2015. the carbon regeneration circuit was 8 t per day and the gold furnace was operated for DER document approximately 20 hours per week at a rate of 30 kg per day. Due to the lack of close reference: A1007051 sensitive receptors (nearest is 32 km away) and low processing rates, no further action is required in terms of regulatory controls. Letter from B Darby, AGAA to L Lavery, DER dated 18 November 2015. DER document reference: A1376610

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DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence Information Former L5.1.1 – These conditions are as for the previous licence. General provisions of L5.1.4 the Environmental February 2017 Amendment Protection Act 1986 DER has reviewed former condition 5.1.2: 5.1.2 The Licensee shall ensure that: Former condition (a) any person left in charge of the Premises is aware of the conditions of 5.1.2 the Licence and has access at all times to the Licence or copies thereof; and (b) any person who performs tasks on the Premises is informed of all of the conditions of the Licence that relate to the tasks which that person is performing. and determined that it is not enforceable, as the requirements for compliance are not clear. The condition has been removed from the Licence. L4.1.3 February 2017 Amendment DER Guideline: Following DER review of the Annual Audit Compliance Report (AACR) procedure, the Annual Audit template for an AACR has been updated and is now available via DER’s public website: Compliance Reports der.wa.gov.au. Consequently the template is not included in the Licence and has been August 2016 removed. Former L5.2.1 – September 2015 Amendment General provisions of L5.2.2 These conditions detail the requirements for submitting an annual environmental report the Environmental to the CEO. Table 5.2.1 has been updated to reflect changes to the point source Protection Act 1986 emissions to air monitoring program. September 2015 Amendment General provisions of Former L5.2.3 – These new conditions are associated with submission of compliance certificate for works the Environmental L5.2.6 authorised by condition 1.3.10 and reporting requirements associated with these works. Protection Act 1986

February 2017 Amendment L4.2.3 – L4.2.6 These conditions have been reinstated for submission of the compliance certificate and commissioning report for the new amendment to install an addition 3 x 4MW. A

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DECISION TABLE

Works Condition Justification (including risk description & decision methodology where relevant) Reference Approval / number documents Licence W = Works section Approval L= Licence requirement to complete a commissioning plan is not included as the post commissioning monitoring requirement is specified in Table 3.2.1 and required to be reported in L4.2.6.

L4.3.1 September 2015 Amendment General provisions of DER has made minor administrative changes to the notification requirements in this the Environmental section. Protection Act 1986 Licence N/A 29 April 2016 Amendment Notice Sections 59(1)(k) Duration The duration of the licence was extended to 20 July 2029 on April 29 2016 by and s59B(9) of the amendment notice, to align with the Premises’ mining tenement expiry dates. Environmental Protection Act 1986

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5 Advertisement and consultation table

Date Event Comments received/Notes How comments were taken into consideration 07/08/2015 Proponent sent a copy of draft Clarification of generators’ nomenclature; Comments adopted into draft; map added. instrument information on stack heights provided; edits suggested to premises description. Map supplied for emission points to air. 16/02/2017 Proponent sent a copy of draft Change suggested to condition 1.3.9 to Changes adopted. instrument allow for digital records, to align with Licensee’s records system. Minor edits to gas generators nomenclature. Modification requested to Premises boundary map to include new mining tenements acquired by the Licensee.

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6 Risk Assessment Note: This matrix is taken from the DER Corporate Policy Statement No. 07 - Operational Risk Management

Table 1: Emissions Risk Matrix

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Appendix A

Point source emissions to air including monitoring

Power Generation – September 2015 Amendment

The emissions to air from point sources at Sunrise Dam Gold Mine has altered with the proposal to install 2 x 4MW gas generators to replace existing diesel fired generators. The replacement of existing diesel generators (12.09 MW capacity) with new gas generation will result in a reduction in overall emissions from the current operation.

NOx emissions from the diesel generators were an order of magnitude larger than gas (in the range of 5000 – 8000 mg/m3)(AngloGold Ashanti Australia Limited 2015).

The diesel generators will only be used as a back up source of power generation, in the event of an interruption to the gas supply. This has been estimated to represent 2% of total overall capacity.

The new gas generators are an efficient design. Expected NOx emissions are approximately half of the NOx emissions from the existing gas fired generators (500 mg/m3 for new as compared to a range of 750 – 1200 mg/m3 for existing) (AngloGold Ashanti Australia Limited 2015).

Abnormal Operation

Emission Description Emission: Combustion gases (NOx, CO, CO2, CH4) in excess of design criteria from gas generators via individual stacks.

Impact: Reduced local air quality. The design criteria for NOx emissions from the new gas generators is estimated at 500mg/Nm3. In the absence of any Western Australian criteria, Schedule 4 of the NSW Protection of the Environment Operations (Clean Air) Regulations has been used as a reference. The emission concentration limit for NOx emissions from new stationary combustion engines in NSW is 450mg/m3.

There are no adjacent receptors. The nearest population is at the accommodation camp for the mine which is located 5 km away from the power station. The nearest sensitive receptor is Granny Smith Gold Mine, located 32 km to the north of the Premises.

Controls: No specific emissions abatement is proposed. Regular maintenance will be conducted to ensure the generators are operating as per design.

Risk Assessment Consequence: Minor, the nearest sensitive receptor is 32 km away Likelihood: Unlikely, maintenance procedures are in place Risk Rating: Moderate

Regulatory Controls Condition 1.2.1 requires the equipment to be maintained on a regular basis. Quarterly emissions monitoring by stack testing has been imposed to validate emissions and maintenance of the combustion process for the first twelve months of operation for the new generators. Following results that indicate the operation of the generators is well managed, the frequency of monitoring will be reduced to an annual test, as per the requirements for the existing gas generators. The monitoring requirements are detailed in condition L3.2.1.

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Given the change in duty to a back up system, stack testing of the diesel generators has been removed from the licence.

Residual Risk Consequence: Minor Likelihood: Unlikely Residual Risk Rating: Moderate

References

Application supporting documentation: Letter from Emma Bamforth to Louise Lavery, DER dated 26 June 2015

Schedule 4 of NSW Protection of the Environment Operations (Clean Air) Regulations 2010

AngloGold Ashanti Australia Limited (2015) Sunrise Dam Gold Mine Annual Environmental Report (AER) 2014

Power Generation – February 2017 Amendment

To support the additional flotation and grinding circuit, an additional 3 x 4MW gas generators are planned to be installed and operated.

The new gas generators are an efficient design and the same model as those authorised by the Licence in September 2015. Expected NOx emissions are approximately half of the NOx emissions from the gas fired generators pre 2015 (500 mg/m3 for new as compared to a range of 750 – 1200 mg/m3 for generators installed before 2015) (AngloGold Ashanti 2015)).

Abnormal Operation

Emission Description Emission: Combustion gases (NOx, CO, CO2, CH4) in excess of design criteria from gas generators via individual stacks.

Impact: Reduced local air quality. The design criterion for NOx emissions from the new gas generators is estimated at 500mg/Nm3 (AngloGold Ashanti 2016b). In the absence of any Western Australian criteria, Schedule 4 of the NSW Protection of the Environment Operations (Clean Air) Regulations has been used as a reference. The emission concentration limit for NOx emissions from new stationary combustion engines in NSW is 450mg/m3.

Controls: No specific emissions abatement is proposed. Regular maintenance will be conducted to ensure the generators are operating as per design.

Risk Assessment Consequence: Minor, the nearest sensitive receptor is 32 km away Likelihood: Unlikely, maintenance procedures are in place Risk Rating: Moderate

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Regulatory Controls Condition L1.3.10 specifies the works requirements to be adhered to for the installation works. Post commissioning monitoring of the generators’ exhaust emissions by stack testing has been imposed to validate that the performance of the generators is as the design specification.

A compliance certificate and commissioning report are required to be submitted following construction and commissioning of the gas generators, respectively in conditions L4.2.3 and L4.2.5.

Given the lack of receptors, and past recent successful experience with commissioning the same type of generator where NOx emissions form the new generators were recorded at concentrations of 280 mg/m3 and 320 mg/m3 (AngloGold Ashanti 2016a), the frequency of monitoring following the post commissioning period is set as annual, as per the requirements for the existing gas generators. The monitoring requirements are detailed in condition L3.2.1. This will ensure that the generators are operated as per design and maintained in order to maintain environmental performance.

Residual Risk Consequence: Minor Likelihood: Unlikely Residual Risk Rating: Moderate

References

AngloGold Ashanti Australia Limited (2015) Sunrise Dam Gold Mine Annual Environmental Report (AER) 2014

AngloGold Ashanti Australia Limited (2016a) Sunrise Dam Gold Mine Power Station Upgrade – Gas Generators Commissioning Report, March 2016 (DER document no: A1374528).

AngloGold Ashanti Australia Limited (2016b) Application to amend licence L8579/2011/2, dated 3 November 2016 (DER reference CEO5259/16; DER document no: A1334822).

Schedule 4 of NSW Protection of the Environment Operations (Clean Air) Regulations 2010

Environmental Protection Act 1986 Page 18 of 18 Decision Document: L8579/2011/2 Amendment date: Monday, 27 February 2017 File Number: 2012/006902 IRLB_TI0669 v2.7