approvals proposal pathway form - amazon s3 · 2019-05-22 · 3 approvals proposal pathway form 1....

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PURPOSE

This form is for applicants seeking approval for new works, new research or for current licence holders, seeking amendment to their current licence. The different pathways available for proponents are; (1) no approval requirement, (2) general exemptions, (3) exemptions under the Act, (4) research, development and demonstration projects (RD&D); (5) licence amendment, (6) fast track works approval and (7) standard – works approval.

HOW TO COMPLETE THIS FORM

Guidance on how to complete this form is provided in EPA publication 1560 Approvals proposal pathway – Guidelines. If you require further clarification you may contact EPA by email [email protected] or on phone 1300 EPA VIC (1300 372 842).

Once you have completed the form, forward it to [email protected] or for hardcopy to Environment Protection Authority (GPO Box 4395, Melbourne 3001). At this stage no application fees apply. Please note that incomplete forms will be returned to the applicant with a request to provide further information.

STRUCTURE

The form is divided into three parts; (1) Proposal form which is a general information part and explains what documents to include with the proposal. (2) Key questions which together with (3) Engagement/consultation will help the EPA make a pathway decision.

The person completing this form must have the authority to make this submission on behalf of the

applicant.

APPLICANT STATEMENT

APPROVALS PROPOSAL PATHWAY FORM

ENVIRONMENT PROTECTION AUTHORITY VICTORIA

mailto:[email protected]


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1. PROPOSAL FORM

1.1 General information

Individual/Company

name (Legal)

Morning Star Gold NL

ABN/ACN ABN 34 003 312 721 ACN 003 312 721

Registered Office

address

Level 6, 15 Astor Terrace, Spring Hill, QLD, 4004

Billing address PO BOX 208, Spring Hill, QLD, 4004

Relevant current EPA Approval/licence number*

* For existing Approval/licence holders.

CEO contact details

Name Tom DeVries

Phone 0408 453 256

Email [email protected]

Premises

Premises address 1 Mine Road, Woods Point, VIC, 3723

Please note EPA expects that Landowner consent has been granted.

1.2 Primary company contact details

Name Hannah Mitchell

Position Environmental and Safety Advisor

Phone 03 5777 8268


Postal address 6 Bridge Street, Woods Point, VIC, 3723


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If a Consultant/Environmental Auditor has been engaged, please provide details:

Name Not applicable

Position & Company

Phone

Email

1.3 Works details

Project/Works Name Morning Star Gold

Cost of Works Not applicable

1.4 What type of business is the premise? (see Appendix 1 in the guidelines for category of scheduled premise)

Morning Star is a gold mine in Woods Point. It’s a scheduled premise, scheduled as C01 – Extractive Industry

and Mining. Mining Lease - MIN5009.

1.5 Describe what you are planning to do in the expandable box below

Morning Star Gold is seeking a permanent discharge permit for a newly installed waste water treatment plant to discharge treated mine water directly into Morning Star Creek.

There is currently a 30A Approval in place to discharge directly from the new WTP to Morning Star Creek, however this approval is only until 19 February 2019.

Documentation to be included

Please provide the following information with your proposal form and pathway documentation. Documents supporting answers given in section 2 and section 3 needs to be included. Further details are provided in EPA Publication 1560 Approvals proposal pathway – Guidelines.

Administrative:

• Certificate of Incorporation (Company); or

• Certificate of Registration (Business) as appropriate

Maps:

• Site plan

• Locality plan

• Planning zone map

• Attach a map of any sensitive receptors in the area.

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Engagement / consultation:

• Evidence of engagement / consultation

• Any templates and supporting information used to the form. Templates can be found in guidance document.

Supporting Documents:

Please submit any documents you may have supporting the information provided in this form.

Commercial in confidence

Commercially confidential material should only be submitted where it is pertinent to the proposal and should be: (a) provided only within a separate appendix and not within the proposal and (b) be clearly marked ‘commercial in confidence’. EPA prefers to receive any commercial in confidence document as hard copy rather than electronic copies. This material will be filed separately to ensure security.

2. KEY QUESTIONS

In answering the questions in this section and section 3 you must provide the EPA with sufficient information to determine which pathway is suitable for the proposed work.

Please insert your answers in the expandable text boxes below or in cross referenced appendices where appropriate (i.e. for modelling results, emissions data or estimations etc.). Applicants must not submit false or misleading information.

2.1 What changes in emissions, discharge or other impacts to the environment do you expect

as a result of the proposal?

To where (air, land, water, odour and noise), as what (what type of substances), from where (incinerator, waste

treatment etc.) and quantity (per day, per week, per month, per year)?

Morning Star is seeking a permanent discharge permit to discharge approximately 200kL of treated mine water

directly to Morning Star Creek. Additionally, approximately 1-2 m3 arsenic rich sludge is produced as a by-

product of water treatment monthly, requiring disposal. Proposed disposal methods for this sludge currently

include disposal underground in cemented tailings, in cemented tailings on the surface or offsite to an

appropriate licenced facility.

Please see attached document from Earth Systems which details a proposal to treat mine water via a modified

process using oxidation and absorbtion to remove arsenic. This new water treatment process has proven

viable and is the preferred method due to improved water quality outcomes, lower reagent use, simplicity, lower

chemical costs and less use of toxic chemicals – ultimately achieving a lower environmental and human health

risk as well as lower volume production of a more stable sludge.

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2.2 Please explain why your proposal and its inherent changes should be considered best

practice.

For some pathways the proponent will need to demonstrate that the proposed work has a low impact on the

environment, as well as on the community. The impact on the environment can be reduced by using best

practice technology. Further information and guidance on demonstrating best practice can be found at:

http://www.epa.vic.gov.au/business-and-industry/guidelines/demonstrating-best-practice or through contacting

the EPA.

Recently, Morning Star has been compelled to decommission the existing filter dam which received water from

the previous WTP. Decommissioning of the dam follows concerns regarding toxic metal concentrations in its

basal sediments, seepage water quality and geotechnical stability. A failure of the dam may result in an

uncontrolled release of contaminated water and sediment into the Morning Star Creek and then into the

Goulburn River.

Subsequent to the decommissioning of the dam arose the requirement for a new WTP capable of treating

water to a standard able to be released directly to Morning Star Creek. The new water treatment plant, which is

currently being optimised, treats water via a modified process using oxidation and absorption to remove

arsenic. This new process has proven viable and is the preferred method due to improved water quality

outcomes, lower reagent use, simplicity, lower chemical costs and less use of toxic chemicals – ultimately

achieving a lower environmental and human health risk as well as lower volume production of a more stable

sludge.

Please see attached document from Earth Systems which details the water treatment method currently being

optimised on site.

2.3 Please explain how your proposal will incorporate waste minimisation principles and how

you have sought to minimise impact of the environment.

A way of reducing your environmental impact is to use EPA guideline documents related to your specific

scheduled premises. If you have reduced your impact of the environment, please describe in what way and

refer to the information used. For more information, please look in the guidelines to this document.

As mentioned above the new water treatment plant, which is currently being optimised, treats water via a

modified process using oxidation and absorption to remove arsenic. This new process has proven viable and is

the preferred method due to improved water quality outcomes, lower reagent use, simplicity, lower chemical

costs and less use of toxic chemicals – ultimately achieving a lower environmental and human health risk as

well as lower volume production of a more stable sludge.

Already Morning Star have reduced the number of chemicals used to treat water from four to one-two.

Furthermore, proactive daily, weekly and monthly maintenance, sampling and reporting ensures that Morning

Star is consistently informed about the performance of the WTP and is warned early of potential problems that

may arise.

A thorough environment risk assessment has been completed to address all identified hazards associated with

the WTP and a future works program developed (and already implemented) based on residual risk identified

during the risk assessment.

http://www.epa.vic.gov.au/business-and-industry/guidelines/demonstrating-best-practice

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2.4 If waste is handled, generated or stored on the premise, please describe the nature of this

waste, the expected quantities and management of these waste streams.

Currently, Morning Star has a 30A Approval allowing the treated mine water to be discharged directly into

Morning Star Creek. Treated mine water is approximately 200kL per annum.

The sludge produced by the WTP is currently stored onsite in bulka bags contained within IBC’s in a dry,

cemented undercover area. The amount of sludge produced is approximately 1-2m3 per month.

2.5 Is the proposal related to technology development?

This could be that it relates to research, development or testing of a new technology, process or plant. If these

conditions apply, please refer to EPA publication 1369 Guidelines for Research, Development and Demonstration

Approvals, and provide relevant information i.e. the purpose of the RD&D project, its scale and duration.

The WTP is not related to technology development, however, Morning Star is committed to remaining informed

on new technologies as they may be applied to the site.

2.6 Will there be changes to your current licence?

(this question is only applicable for current licence holders)

Highlight the proposed changes in the relevant existing condition of your licence and provide supporting

evidence to demonstrate how the proposed change will affect/not affect the environment.

Not applicable

2.7 Are there special circumstances that apply?

For example is there other legislation related to the project or other approvals (i.e. planning permits) that are

still pending?

Morning Star intends to apply to Earth Resources for a workplan variation to include the upgraded WTP and

EPA discharge permit.

3. ENGAGEMENT / CONSULTATION

For your application to be accepted, you must have done engagement / consultation or be able to clearly demonstrate it is not applicable because there is no risk and no concern to human health or the environment. To find out how to do engagement / consultation see the guide to this form. If you decide to not do this, there is no evidence whether the proposed work will have a high or low impact and end up in a different pathway. Do not forget to attach the supporting documents for this with the proposal.

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3.1 Have you identified potential impacted / interested stakeholders?

EPA wants to know if you have identified surrounding stakeholders that potentially will have an opinion of the

proposal (for information about this see appendix 3, 4 and 5 in the guidelines).

The nearest stakeholders are the community of Woods Point, directly downstream of the mine.

Other identified stakeholders include the EPA, Earth Resources, Goulburn Valley Water and Mansfield Shire.

3.2 Describe the engagement / consultation with stakeholders you have done.

What type, with whom, have you met on multiple occasions etc.

Morning Star regularly engages with the property owners within Woods Point as well as the wider community

within the region. Specifically, the stakeholder engagement program involves community meetings six-monthly,

the most recent of these was held on the 25th August 2018. The main focus of this meeting was the

decommissioning of the dam and release of treated mine water into Morning Star Creek – to which no

objections were received. A subsequent community meeting will be held early in 2019 during which an update

will be provided on the works.

Furthermore, Morning Star have met with the EPA, Earth Resources, Goulburn Valley Water and Mansfield

Shire on numerous occasions all of which have shown support for the proposal.

3.3 What was the response from the stakeholders?

Provide EPA with evidence that stakeholders know about your proposal, what their concerns are (if any) and

how these were addressed. For verification purposes include stakeholder contact information (e.g. scanned

attendance list with contact information).

A meeting with Earth Resources and the EPA was held at the mine on October 31st 2018 where the proposal

was discussed at length. Amongst those in attendance were:

Kyra-Jane Huhn – EPA – Senior Environment Protection Officer, E: [email protected]

Tony Robinson – Earth Resources – Director Regulatory Compliance, E: [email protected]

At the most recent community meeting held on the 25th August 2018, where the main topic was the dam and

release of water into Morning Star Creek, no objections were received.

Furthermore, Morning Star have met with the EPA, Earth Resources, Goulburn Valley Water and Mansfield

Shire on numerous occasions all of which have shown support for the proposal.

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FEEDBACK

Please provide any feedback concerning this form or the guidelines to this form:

nil

PROCESS AFTER THE FORM IS SUBMITTED

Following submission of your proposal form and any required supporting information, a decision will be

made within two weeks concerning which pathway is suited for the proposal. The procedure after this

depends on the specific timelines for the different pathways (shown in Table 1). For more information

please read the guidelines to this document.

Table 1 – The different pathways have different time frames from pathway decision until the final decision is made.

Pathway Pathway proposal decision

Further stages Final decision

No approval requirement 2 weeks No –

General exemption

2 weeks No –

Exemption under the Act

2 weeks No 2 weeks after pathway proposal decision*

Research Development & Demonstration

2 weeks Application process 30 days after application has been accepted

Licence amendment 2 weeks Assessment process 60 days after application has been accepted

Fast track Works approval 2 weeks Application process 6 weeks after application has been accepted

Standard works approval 2 weeks Assessment process 3 months after application has been accepted

* could be changed if additional information is required.

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Certificate of Company Registration

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Locality Plan with arrow indicating location of Morning Star Mine

Planning MapWoods Point

Legend

Disclaimer: This map is a snapshot generated from Victorian Government data. This material may be of assistance toyou but the State of Victoria does not guarantee that the publication is without flaw of any kind or is wholly appropriatefor your particular purposes and therefore disclaims all liability for error, loss or damage which may arise from relianceupon it. All persons accessing this information should make appropriate enquiries to assess the currency of data.

Map Scale 1:48,385November 28, 2018 12:15:01 PM

0 1000 2000 m.

Copyright © State Government of Victoria. Service provided by www.land.vic.gov.au

Map Centre - VicRoads 81 F3

A

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700kVA GENSET 700kVA GENSET

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Site Layout Plan

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31st October 2017

Terry ClarkSheet size:

LEGEND

Water Monitoring Sites

Shaft

Tank

Process Plant / Site building

Electrical

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GEOLOGISTS OFFICES

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Rectangle

ReeceCollins

Inserted Text

ReeceCollins

Typewritten Text

Water Treatment Plant

Morning Star Gold is having an open day! When: Saturday 25th August, 2018 ‐11:00am to 1:00pm

Where: Morning Star Gold, 1 Mine Rd, Woods Point (mine site)

Why: Community Consultation and open day

Free sausage sizzle

Discussing, amongst other things, current and future plans at Morning Star Gold and Rose of Denmark, water discharge to MS

Creek, water management activities and trucking/traffic management.

Limited underground tours available (time permitting)

Interested in Morning Star Gold? Come say hello.

PH (BH) 03 5777 8268


Assess_NoOccupier_or_Owner_name Postal_Addr__1 Postal_Ad Postal_Addr__3 Postal_Addr__4 Address_of_Rated_Land Postal_PosEmail_AddressA18726 HAMIAMA PTY LTD 22 Bridge Street WOODS POINT VIC 3723 22 BRIDGE STREET WOODS POINT 3723 [email protected] GOULBURN VALLEY REGION WATER AUTHORITY PO Box 185 SHEPPARTON VIC 3631 3631 [email protected] MORNING STAR GOLD NL C/‐ Mantle Mining Po Box 208SPRING HILL QLD 4004 6 BRIDGE STREET WOODS POINT 4004A9309 BA PROTHERO HJ PROTHERO C/‐ Post Office WOODS POINT VIC 3723 82 COSTER STREET WOODS POINT 3723A18607 GK LEAH 2 Corry Street WOODS POINT VIC 3723 5 BRIDGE STREET WOODS POINT 3723A18637 GK LEAH 2 Corry Street WOODS POINT VIC 3723 14 BRIDGE STREET WOODS POINT 3723A9517 MINISTRY FOR POLICE & EMERGENCY SERVICES Accounts Payable Financial S Gpo Box 913 MELBOURNE VIC 3001 3001 [email protected] COUNTRY FIRE AUTHORITY PO Box 565 WANGARATTA VIC 3676 3676 hume‐[email protected] AMBULANCE VICTORIA Department Of Sustainability & PO Box 124 BENALLA 3672 3672A17185 DEPARTMENT OF ENVIRONMENT LAND WATER & PLANNING Att: Andrew Jens 8 Nicholso EAST MELBOURNE VIC 3002 3002 [email protected] MANSFIELD SHIRE COUNCIL Private Bag 1000 MANSFIELD VIC 3724 9 BRIDGE STREET WOODS POINT 3724A9781 MANSFIELD SHIRE COUNCIL Private Bag 1000 MANSFIELD VIC 3724 MCDOUGAL STREET WOODS POINT 3724A10000 MANSFIELD SHIRE COUNCIL Private Bag 1000 MANSFIELD VIC 3724 14 BREWERY CREEK TRACK WOODS 3724A17825 WOODS POINT GUN CLUB L POILE Mr Laurie Poile Secretary Woods Point P O Box 15YARRA JUNCTION VIC 3797 9070 MANSFIELD WOODS POINT RO 3797 [email protected] MANSFIELD SHIRE COUNCIL Private Bag 1000 MANSFIELD VIC 3724 27 SCOTT STREET WOODS POINT 3724A17827 RSL ‐ R.O.A.B. HALL C/‐ Ronald Martyn 19 Bridge SWOODS POINT VIC 3723 18 SCOTT STREET WOODS POINT 3723 [email protected] MANSFIELD SHIRE COUNCIL Private Bag 1000 MANSFIELD VIC 3724 3724A9186 JW ELLIS T Ellis Estate 2/27‐29 Souter Street BEACONSFIELD VIC 3807 9 BRIDGE STREET WOODS POINT 3807A9187 J PHIPPS 65 Northumberland Crescent SHEPPARTON VIC 3630 11 BRIDGE STREET WOODS POINT 3630A9188 DL METCALF JJ METCALF PO Box 53 ELTHAM 3095 13 BRIDGE STREET WOODS POINT 3095A9189 RK MARTYN ESTATE Bridge Street WOODS POINT 3723 19 BRIDGE STREET WOODS POINT 3723 [email protected] A WOODS ESTATE DG WOODS ESTATE 393 Maryann Road ECHUCA VIC 3564 25 BRIDGE STREET WOODS POINT 3564A9221 GD & AL COWAN 1 Taurus Court LILYDALE VIC 3140 4 MCDERMOT STREET WOODS POIN 3140A9224 A WOODS ESTATE DG WOODS ESTATE 393 Maryann Road ECHUCA VIC 3564 2 BUTLER STREET WOODS POINT 3564A9283 J DICK 1 Corry Street WOODS POINT VIC 3723 1 CORRY STREET WOODS POINT 3723A9284 AD Merlo 18 Kings Road EMERALD VIC 3782 5 CORRY STREET WOODS POINT 3782 [email protected] MYLANI PTY LTD 22/92 Waverley Road MALVERN EAST VIC 3145 7 CORRY STREET WOODS POINT 3145 [email protected] LE YOUNG ESTATE 109 Hayrick Lane MOOROOLBARK VIC 3138 19 COSTER STREET WOODS POINT 3138A9304 RD GUERIN C/o Barbara Guerin & Lionel Jenkins Po Box 574CASTLEMAINE VIC 3450 35 COSTER STREET WOODS POINT 3450A9306 KD & HM SIMONS 3 Elsie Street BORONIA VIC 3155 68 COSTER STREET WOODS POINT 3155A9307 N RUPPELL MC RUPPELL 17 Yoorana Place BROADBEACH WATERS QLD 4218 39 COSTER STREET WOODS POINT 4218A9308 R JONES 8 Densham Court WANTIRNA SOUTH VIC 3152 41 COSTER STREET WOODS POINT 3152 frog‐[email protected] DJ & JM BOURKE 7 James Road GLEN WAVERLEY VIC 3150 22 COSTER STREET WOODS POINT 3150A9311 H & EG SCHOENAUER 2 Coster Street WOODS POINT 3723 12 COSTER STREET WOODS POINT 3723A9312 T RUGYS 9005 Mansfield Woods Point Road WOODS POINT VIC 3723 9005 MANSFIELD WOODS POINT RO 3723A9313 S OUWERKERK 169 Forest Road BOWEYA NORTH VIC 3675 37 COSTER STREET WOODS POINT 3675A9446 KD & HM SIMONS 3 Elsie Street BORONIA VIC 3155 25 EDWARD STREET WOODS POINT 3155A9447 F DURIAUX C/‐ Robert Clarke 193 DenisoDULWISH HILL NSW 2203 26 EDWARD STREET WOODS POINT 2203A9471 E SCOTT B GEERLING JR NEWLAND Deceased VJ NEWLAND 36 Hampton Road TATURA VIC 3616 2 ELLERY STREET WOODS POINT 3616 [email protected] MJ & MJ DILLON 4 Cobar Street EAST BENTLEIGH VIC 3165 Ellery Street Woods Point 3165A9473 SPORTING SHOOTERS ASSOC OF AUST SSAA Deerstalkers Club c/o 3/26 E BOX HILL VIC 3128 1 ELLERY STREET WOODS POINT 3128A9474 MW & GM TOWE 3 Ellery Street WOODS POINT VIC 3723 3 ELLERY STREET WOODS POINT 3723A9475 MA SCHOONEVELDT GR THOMAS K & N MAYNARD 132 Yan Yean Road PLENTY VIC 3090 5 ELLERY STREET WOODS POINT 3090 [email protected] CW WOODS 12 Hurley Street WOODS POINT VIC 3723 12 HURLEY STREET WOODS POINT 3723A9596 EM REESEL 61 Sunds Road MARYSVILLE VIC 3779 6 HURLEY STREET WOODS POINT 3779A9597 IM WILLIAMS 24 Ridgway MIRBOO NORTH VIC 3871 4 HURLEY STREET WOODS POINT 3871A9599 RA GREEN GL GREEN JH GILMARTIN C/‐ J.H. Gilmartin 144 GrossmWANGARATTA NORTH VIC 3678 5 HURLEY STREET WOODS POINT 3678A9600 PL WEBB 10 Minerva Street MANSFIELD VIC 3722 7 HURLEY STREET WOODS POINT 3722 [email protected] R OWEN 26 Coolidge Street CORIO VIC 3214 7 ELLERY STREET WOODS POINT 3214 [email protected] FL SCOTT 7 Mcdougal Street WOODS POINT 3723 8 ELLERY STREET WOODS POINT 3723A9603 DJ & LL SAXON 5 Blackleather Creek Road HODDLES CREEK VIC 3139 11 HURLEY STREET WOODS POINT 3139 [email protected] CR TOIFL 13 Hurley Street WOODS POINT VIC 3723 13 HURLEY STREET WOODS POINT 3723A9605 TMS BISHOP SJG HEATH AJ HEATH DSR HEATH 90 Pitt Street ELTHAM VIC 3095 15 HURLEY STREET WOODS POINT 3095A9606 DF MCDONALD 17 Hurley Street WOODS POINT VIC 3723 17 HURLEY STREET WOODS POINT 3723A9607 GK & M LEAH 2 Corry Street WOODS POINT VIC 3723 2 CORRY STREET WOODS POINT 3723A9778 FL SCOTT 7 Mcdougal Street WOODS POINT 3723 1 MCDOUGAL STREET WOODS POINT 3723A9779 KM BENNIE 6 Roxburgh Court EPPING VIC 3076 5 MCDOUGAL STREET WOODS POINT 3076A9782 MD ESLER RG ESLER 2/41 Carson Street KEW VIC 3101 12 BRIDGE STREET WOODS POINT 3101A9784 CJ HARVEY PO Box 640 MANSFIELD VIC 3724 4 MCDOUGAL STREET WOODS POINT 3724A9995 RF & DB WRIGHT C/‐ 1 SalisburyUPPER BEACONSFIELD VIC 3808 3 SCOTT STREET WOODS POINT 3808A9996 LJ METCALF 120 Donaldson Road KANGAROO GROUND 3097 5 SCOTT STREET WOODS POINT 3097 [email protected] HJ & KJ HUGHES 16 Biarritz Avenue BEAUMARIS VIC 3193 7 SCOTT STREET WOODS POINT 3193A9998 JW & R BARBER 27 Canterbury Road WARRNAMBOOL VIC 3280 9 SCOTT STREET WOODS POINT 3280A10002 CG PRIOR WB HEPBURN GK FROWD 3 Eastleigh Court NEWBOROUGH VIC 3825 11 SCOTT STREET WOODS POINT 3825A10004 RN ALFORD 83/67 Maroondah Highway CROYDON VIC 3136 9020 MANSFIELD WOODS POINT RO 3136A10006 MJ KIRKPATRICK 106 Harold Street WANTIRNA VIC 3152 17‐21 SCOTT STREET WOODS POINT 3152A10007 DT & BJ MILLER 29 Scott Street WOODS POINT VIC 3723 29 SCOTT STREET WOODS POINT 3723A10008 JHM NORTON 65 Margot Street CHADSTONE 3148 31 SCOTT STREET WOODS POINT 3148 [email protected] AW HUTCHINSON DM PRINGLE CF MOONEY JW BURGE 15 Edna Street EAST MALVERN VIC 3145 35 SCOTT STREET WOODS POINT 3145A10010 A KOZMA 9/13‐17 Kelly Avenue HAMPTON EAST VIC 3188 37 SCOTT STREET WOODS POINT 3188A10011 MV & SK FUHRMANN 20 Pierre Street WOORI YALLOCK VIC 3139 41 SCOTT STREET WOODS POINT 3139A10012 GR & VF DEERING PO Box 20 MORNINGTON VIC 3931 39 SCOTT STREET WOODS POINT 3931A10013 D PREIS 74 Longworth Road DUNBOGAN NSW 2443 45 SCOTT STREET WOODS POINT 2443 [email protected] GR HEBBLETHWAITE 50 Lynette Avenue WARRANDYTE VIC 3113 23 HEALES STREET WOODS POINT 3113 [email protected] DJ STUDD 38 Scott Street WOODS POINT VIC 3723 38 SCOTT STREET WOODS POINT 3723A10018 TL & AP MAKINS 35 Rodier Road YARRAGON VIC 3823 32 SCOTT STREET WOODS POINT 3823 [email protected] TJ CORNEILLE ESTATE 30 Scott Street WOODS POINT VIC 3723 30 SCOTT STREET WOODS POINT 3723A10020 M BURSTER JJ MACCORA PO Box 1839 BAIRNSDALE VIC 3875 22 SCOTT STREET WOODS POINT 3875 [email 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EARTH SYSTEMS Environment · Water · Sustainability

EARTH SYSTEMSABN 42 120 062 544

14 Church Street Hawthorn, Victoria 3122, Australia

Tel: +61 (0)3 9810 7500Fax: +61 (0)3 9853 5030

Email: [email protected]: www.earthsystems.com.au

TECHNICAL MEMORANDUM

MSTAR198910.Rev0 DRAFT 1 / 17

DATE 24 August 2018 REF MSTAR198910.Rev0

TO Reece Collins, AuStar Gold REV 0

FROM Sophie Pape / Jeff Taylor PROJECT Morning Star Gold Mine

PRELIMINARY TESTWORK TO CONFIRM THE POTENTIAL BENEFITS OF OXIDATION AND ADSORPTION APPROACH TO ARSENIC REMOVAL

INTRODUCTION

Earth Systems conducted a preliminary review of existing documentation relating to mine water treatment at the Morning Star gold mine site at Woods Point, Victoria, and made the following recommendations (Earth Systems, 2018):

1. Conduct a preliminary site assessment to:

a. Determine likely WTP modifications required to allow the plant remove arsenic from mine water via oxidation and adsorption processes.

b. Conduct preliminary field-based testwork to identify optimum management / treatment strategy for currently elevated soluble sulfide concentrations in the Settling Pond.

c. Review the nature and location of waste rock backfill and above-ground waste rock, and the potential for controlling water infiltration rates to the mine, in order to lower the production of soluble arsenic within the mine.

d. Identify potential methods / areas for polishing of WTP outflows via active or passive treatment.

2. Following the site assessment, develop and implement a testwork program to quantify the benefits of the oxidation and adsorption approach to arsenic removal.

3. Upon confirmation of regulatory criteria for receiving water quality, develop a mixing zone / dilution calculator that site personnel can use on a daily basis to confirm suitability of treated water for off-site discharge.

4. Review and update routine site water monitoring procedures to verify the efficiency of the modified WTP operation and compliance with regulatory water quality criteria.

5. Conduct sludge stability testwork to investigate the feasibility of various backfill options for sludge disposal.

Morning Star Gold Mine Preliminary Testwork to Confirm the Potential Benefits of Oxidation and Adsorption Approach to Arsenic Removal

MSTAR198910.Rev0 DRAFT 2 / 17 EARTH SYSTEMS

24 August 2018

The preliminary site assessment (Item 1) was conducted by Earth Systems from 30 July to 1 August 2018. This report outlines the key results of the site assessment.

WTP MODIFICATION TO REMOVE ARSENIC VIA OXIDATION AND ADSORPTION

Data reviewed prior to the site assessment indicated that most (96-99%) of the arsenic in the raw mine water is already in its oxidised state (As5+) indicating that physical oxidation (eg. enhanced aeration) and/or chemical oxidation, followed by adsorption, would be much more efficient (and cost effective) methods of arsenic removal in the WTP, compared to the current method involving arsenic reduction to As3+ (followed by precipitation of As2S3) (Earth Systems, 2018).

Arsenic removal via oxidation/adsorption rather than reduction/precipitation has the potential to (Earth Systems, 2018):

Dramatically lower reagent consumption costs, both by lowering the number of reagents (from 3 to only 1) as well as using lower cost reagent/s.

Avoid safety risks and H2S odour issues associated with the use of sodium sulfide reagent.

Lower the complexity of WTP operation by lowering the number of reagents.

Increase the likelihood of achieving target arsenic concentrations in treated water and lower downstream risks associated with reduced arsenic (As3+) which is more toxic to aquatic organisms than oxidised arsenic (As5+).

Decrease downstream risks associated with elevated sulfide concentrations in treated water.

Produce a sludge that is more chemically stable under oxidising conditions and thereby increase options and lower cost for sludge management.

Be more acceptable to the regulator due to use of less potentially toxic chemicals and likely substantially improved water quality outcomes.

A series of preliminary (ex-plant) tests and laboratory analysis was conducted during a 3-day site assessment (30 July to 1 August 2018) to quantify the potential benefits of the oxidation and adsorption approach to arsenic removal. The tests were designed to investigate:

Whether or not aeration is required to achieve sufficient oxidation of raw mine water for subsequent arsenic removal (in the form of As5+).

If aeration is required, the relative performance of passive versus active aeration methods.

The potential flow rate of air-addition required, and whether this could be achieved in the existing WTP or if additional aeration (eg. underground) or chemical oxidation (eg. within the WTP) may be required to achieve sufficient oxidation.

The effectiveness of iron salt addition, in the form of polyferric sulfate (PFS), in removing dissolved arsenic from oxidised mine water (post aeration) via adsorption processes, and the effect of different PFS dosing methods. A 50 wt.% (maximum) PFS solution was used in all testwork described below.

The potential residence time required after PFS addition to oxidised (aerated) mine water, to facilitate the settling of suspended iron flocs (with electrostatically attached arsenic) from the water column, and whether this could be achieved in the existing lamella clarifier at the WTP, or if additional settling capacity is required to facilitate iron floc and arsenic removal.



24 August 2018

The potential requirement for additional treatment steps (eg. microfiltration, ion exchange, wetland) after PFS addition and initial settling / clarification.

The effect of PFS dose rate on treated water arsenic concentrations and other water quality parameters (eg. pH), as well as settling rate, treated water clarity, sludge density and sludge generation rate.

Results from Field Testwork

Key results from the field-based testwork program are summarised below, and laboratory data from the testwork are provided in Attachment A:

The mine water was characterised as near-neutral (7.7-8.0) with variably reduced oxidation state (Eh ranging from below +200 mV to above +400 mV) and an electrical conductivity (EC) of 800-900 μS/cm.

Relatively reducing conditions within the mine water are believed to be related to the interaction of the void water with structural timbers in the mine.

The mine water is also subject to ongoing reducing processes in the WTP buffer tanks (and mill supply tank), due to leaf litter / organic matter accumulation in the base of the tanks via the tank openings.

Concentration data from the portable Arsenic Test kit compared very well with laboratory data, providing strong support for its use as a rapid performance assessment tool for mine operators into the future.

Approximately 95% of the arsenic is in soluble form (rather than particulate form) in the raw mine water. The particulate component could be removed by flocculation methods, although this would only address 5% of the total arsenic load of the mine water.

The partially reduced nature of the raw mine water, indicated by Eh values as low as ~200 mV and supported by nitrogen speciation and total organic carbon data in Attachment A, indicate that aeration is expected to be required to achieve and maintain sufficient oxidation of As3+ in the raw mine water for subsequent arsenic removal (in the form of As5+).

More than 1.5 hours of active aeration would be required to completely oxidise the raw mine water. The capacity of the existing WTP is insufficient to achieve this.

An additional benefit of aeration is that pH is raised by 0.5-1.0 log unit and salinity (EC) is lowered as CO2 (gas) is released from solution. The rising pH during aeration is particularly beneficial given that subsequent PFS dosing has the effect of lowering pH. Hence, effective aeration can also lower the need for further chemical addition to raise the pH of treated water. Refer to trends in pH and EC during aeration testwork in Figure 1.

Primary active aeration underground within the shaft is recommended to facilitate conversion of As3+ to As5+ and to raise the pH of the raw mine water. Secondary aeration within the WTP may also be required if the primary oxidation is insufficient or if reducing conditions within the WTP buffer tanks are not dealt with effectively. Chemical oxidation (eg. within the WTP) could also be considered as a backup strategy.

Iron salt addition (polyferric sulfate, PFS) can effectively remove dissolved arsenic from the oxidised mine water via adsorption processes.



24 August 2018

Trends in arsenic and iron concentrations over time, after PFS addition and settling are shown in Figures 2 and 3, respectively. It is clear from these figures that significant iron precipitation and arsenic adsorption occurs soon after PFS addition (eg. more than 95% within 10 minutes).

It is also evident from Figures 2 and 3 that settling of arsenic and iron in particulate form during testwork occurs relatively slowly. The testwork data indicate that at least 24 hours residence time is required after PFS addition to oxidised mine water, to remove suspended arsenic from the water column via settling. The capacity of the existing clarifier is unlikely to be sufficient to achieve this.

The effect of PFS dose rate on arsenic concentrations is shown in Figure 4. This plot indicates that increasing PFS dose rates generally result in decreasing dissolved arsenic concentrations. Similarly, higher PFS dose rates are generally associated with lower total arsenic concentrations although the trend is not clear in Figure 4 due to the stronger influence of settling time (rather than PFS dose rate) on total arsenic concentrations, as observed in Figure 2.

Settling rates in a modified WTP will likely depend significantly on the actual PFS dose method and equipment configuration.

Optimum dose rates for PFS have been established for the testwork program but will need to be adjusted during commissioning of a modified WTP.

The minimum PFS dose rate for arsenic removal is likely to be in the range 100-200 mg PFS/L although higher dose rates may be required to achieve optimum settling rates.

The effect of PFS dose rate on sulfate concentrations is shown in Figure 5. This clearly indicates a positive linear relationship between the two parameters (ie. sulfate from the PFS remains in solution) as expected. At the range of PFS dose rates tested, sulfate concentrations and hence salinity of the treated water is not significantly affected.

The effect of PFS dose rate on iron concentrations is shown in Figure 6. This indicates that increasing PFS dose rate affects total but not dissolved iron concentrations. Due to the near neutral pH of the mine water, iron from the PFS precipitates rapidly after dosing. As with arsenic, settling time has a strong influence on total iron concentrations as observed in Figure 3.

The effect of PFS dose rate on pH is shown in Figure 7. This indicates that increasing PFS dose rate will lower the treated water pH, as expected. This is unlikely to be an issue at most of the PFS dose rates tested, particularly if the water is aerated prior to PFS addition, as noted above.

It is expected that PFS dose rates can be optimised during commissioning to achieve treated water arsenic concentrations of less than 200 μg/L As (total) and less than 10 μg/L As (dissolved).

Over-dosing with PFS has the potential to adversely affect treated water quality (eg. lower pH, increased turbidity, higher arsenic concentrations) as well as increasing treatment costs and sludge generation rates and sludge disposal costs, whereas under-dosing may result in insufficient arsenic removal.



24 August 2018

Figure 1. Trends in pH and salinity over time during two separate aeration tests.

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24 August 2018

Figure 2. Arsenic concentrations over time after PFS addition and settling. Total arsenic data shown in upper graph, dissolved arsenic data shown in lower graph. Trends are indicative as PFS dose rates were variable for all tests (ranging from 50-1000 mg/L PFS).

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24 August 2018

Figure 3. Iron concentrations over time after PFS addition and settling. Total iron data shown in upper graph, dissolved iron data shown in lower graph. Trends are indicative as PFS dose rates were variable for all tests (ranging from 50-1000 mg/L PFS).

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24 August 2018

Figure 4. Effect of PFS dose rate on arsenic concentrations. Trends are indicative as settling durations were variable for all tests (ranging from 10 minutes to 22 hours).

Figure 5. Effect of PFS dose rate on sulfate concentrations. Dashed series is a line of best fit.

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24 August 2018

Figure 6. Effect of PFS dose rate on iron concentrations. Trends are indicative as settling durations were variable for all tests (ranging from 10 minutes to 22 hours).

Figure 7. Effect of PFS dose rate on pH.

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24 August 2018

Conclusions

Based on the results of the field-based testwork program, key conclusions are provided below:

Arsenic removal via oxidation and adsorption is a viable route for void water treatment at the Morning Star Gold Mine. This is also the preferred route due to its improved water quality outcomes, lower reagent use, process simplicity and lower chemical cost, less toxic chemical use and hence lower environmental and human health risk, lower sludge production rates, and production of a more stable sludge.

Aeration appears to be an adequate oxidation strategy for the mine void water. Oxidation rates have not been accurately determined at this stage.

Aeration can effectively ensure that arsenic is almost exclusively in its 5+ oxidation state, and therefore able to be effectively removed via adsorption.

Suitable aeration of the mine void water will also raise its pH, counteracting the effect of PFS addition.

PFS is a suitable adsorbent for As5+ removal from the mine void water.

Adoption of the oxidation and adsorption route for arsenic removal from mine void water is expected to readily and routinely achieve discharge water quality standards.

If used carefully, the data from portable arsenic test kits is predicted to be reliable. The test kits should be used several times a day during commissioning and at least on a daily basis during routine operation of the modified WTP to confirm its performance.

Likely WTP modifications required to allow the plant remove arsenic from mine water via oxidation and adsorption processes include (refer to schematic in Attachment B)

Active aeration system, using compressed air plant with sparge pads / diffuser disc assembly, to be installed underground at a depth of 10-20 metres below the mine water level, with appropriate precautions in place to minimise OHS risks associated with CO2 release from the mine water during aeration.

Additional active aeration system, using compressed air plant with sparge pads / diffuser discs, to be installed in all WTP reactors. This may be particularly important to overcome reducing processes in the WTP buffer tanks.

WTP buffer tanks to be flushed to remove existing leaf litter / organic matter that have accumulated in the base of these tanks. Tank openings to be covered to prevent future organic matter accumulation.

Oxidised water from WTP reactors to be directed to 2 x 80,000 L existing Patchuka tanks at the main process plant. Flow to be split evenly such that Patchuka tanks can be operated in parallel (not series).

PFS to be dosed into feed water at both Patchuka tanks, for arsenic adsorption. PFS dose locations, dose method and dose rates to be optimised during commissioning (preliminary estimates of required dose rates can be developed prior to commissioning).

Overflows from Patchuka tanks to be directed into the existing lamella clarifier at the WTP for final polishing.

Overflows from the lamella clarifier to be directed to the existing Tank 5 in the WTP for continuous pH and turbidity monitoring, and sampling for arsenic monitoring on site (by test kit).



24 August 2018

Water that meets treatment targets to be discharged via Tank 5 to Morning Star Creek, pending EPA approval of treatment approach.

Water that exceeds targets to be re-circulated through the treatment process.

Early warning EC system to be installed in Morning Star Creek downstream of the mine site (Site ID “MD”).

Underflow from the Patchuka tanks to be directed to the existing centrifuge at the WTP at a rate to be optimised during commissioning (preliminary estimates of sludge generation rate can be developed prior to commissioning).

Underflows from the lamella clarifier to be directed to the existing centrifuge at the WTP as per the current WTP operation.

Centrate to be directed to the WTP reactors for treatment as per the current WTP operation.

Sludge from the centrifuge to be managed as per the existing solid waste system, with potential to co-dispose with tailings underground, pending testwork to verify the geochemical stability of the sludge.

The existing Settling Dam is to be decommissioned due to EPA concerns regarding toxic metal concentrations in its basal sediments, seepage water quality and geotechnical stability, and is therefore excluded from the proposed WTP modifications described above and illustrated in Attachment B.

Upon completion of WTP modifications, commissioning testwork will be required to:

More accurately quantify the benefits of the oxidation and adsorption approach to arsenic removal.

Optimise underground aeration system configuration and/or air flow rates.

Optimise WTP aeration system configuration and/or air flow rates.

Optimise PFS dose rates, locations and/or specific methods.

Optimise treatment sludge pumping operation (based on sludge density, supernatant water clarity and/or arsenic removal efficiency).

The commissioning process should include:

Single tank during filling at average flow rate (200 kL/day) and during/after overnight settling.

Single tank during filling at peak flow rate (5 L/s) and during/after overnight settling.

Single tank during continuous operation at average flow rate (200 kL/day).

Single tank during continuous operation at peak flow rate (5 L/s).

Double tanks during continuous operation, in parallel, at double the average flow rate (400 kL/day).

Double tanks during continuous operation, in parallel, at peak flow rate (5 L/s each).



24 August 2018

MANAGEMENT OF SETTLING POND WATER CHEMISTRY

Elevated soluble sulfide concentrations in the Settling Pond associated with the use of sodium sulfide reagent, represent an existing and future risk to downstream water quality (Earth Systems, 2018).

At the time of Earth Systems’ site inspection (30 July to 1 August 2018) the most recent water chemistry data for the Settling Pond indicated sulfide concentrations of less than 0.1 mg/L (ie. undetected) based on a sample collected on 10 July 2018.

As a result, qualitative sulfide destruction trials were conducted using a 7% Na2S solution, rather than Settling Pond water. An excess of an iron salt, either hematite (solid) or PFS (liquid), was carefully added to a sample of the 7% Na2S solution, to lower soluble sulfide concentrations by promoting the precipitation of iron mono-sulfide and/or pyrite. Both hematite and PFS were tested to investigate their likely ability to lower sulfide concentrations and the rate at which this may be achieved.

Due to time constraints, the trials were intended to provide rapid and qualitative results on the basis of field observations only (visual and/or odour). Peroxide solution was used to investigate the likely formation of iron mono-sulfide and/or pyrite.

Based on sulfide destruction trials, it is recommended that PFS is used rather than hematite if required as an emergency response strategy to lower sulfide concentrations in the Settling Pond. PFS will react with sulfide within seconds, whereas the reaction time of the hematite would not be sufficient for emergency response. A typical reaction associated with sulfide destruction using PFS would be:

8 Na+ + 4 S2- + 2 Fe3+ + 3 SO4

2- + 2 H2O 2 FeS2 + 8 Na+ + 3 SO42- + 2 OH- + H2

As a guide, approx. 50-60 L of 50 wt.% (maximum) PFS solution would need to be uniformly dispensed into a Settling Dam volume of 1.2 ML with a sulfide concentration of 10 mg/L. Refer to PFS specifications and MSDS attached. Caution: PFS is acidic (a safety risk) and overdosing with PFS could lead to acidification of the pond and discharge of acidic and potentially metalliferous water to the environment.

More quantitative trials would be required to verify the results outlined above and to confirm PFS dose rates.

As previously advised, modification of the WTP treatment process to remove arsenic via oxidation/adsorption methods rather than reduction/precipitation methods (ie. avoid the used of sodium sulfide reagent) will lower sulfide concentrations in the Settling Pond in the long term (Earth Systems, 2018). This can be achieved as outlined in the previous section and Attachment B.

Other long term options for managing sulfide concentrations in the Settling Pond include (Earth Systems, 2018):

Maintaining pond water levels such that existing arsenic sulfide precipitates are submerged at all times, to avoid the release of soluble arsenic into the pond water due to atmospheric oxidation (see recommendations for settling pond decommissioning).

De-sludging of the pond to remove reactive sulfide precipitates.

Ongoing iron salt addition to the pond water should not be required following decommissioning of the sodium sulfide dosing system in the WTP.



24 August 2018

KEY SOURCES OF ARSENIC CONCENTRATIONS IN SITE WATER

It is understood that significant tonnages of sulfidic waste rock have been used to fill mine voids during historical underground mining activities. The key source of soluble arsenic in mine void water is the sulfidic rock that has been placed in the mine voids to facilitate mining. All parts of this sulfidic waste that are unsaturated (ie. above Level 7) are currently releasing soluble arsenic due to interaction with atmospheric oxygen. Techniques are available to limit arsenic release from this material. Furthermore, small tonnages of waste rock have been used as foundation material to support above-ground facilities. The above-ground fill is located up hydraulic gradient of the Settling Pond and down hydraulic gradient of most other site facilities (WTP, process plant, workshop, offices, etc.).

Runoff from above-ground waste rock fill was monitored by Earth Systems on 1 August 2018 at two locations (sample ID’s “WRD @ SP” and “WRD @ Bridge”), to provide an indication of the water chemistry associated with drainage from both above-ground waste rock fill and underground waste rock located above the mine water level (unsaturated zone). The flow rate of surface runoff was also estimated during water quality monitoring and sampling.

The field monitoring data are summarised below and laboratory data are presented in Attachment A:

Drainage from the base of the waste rock fill prior to dilution with relatively clean surface water runoff (WRD @ SP) is near-neutral (pH 6.8) with moderately elevated salinity (EC 579 S/cm) and a total arsenic concentration of 238 g/L. The water was very clear and TSS was therefore not analysed.

Waste rock drainage diluted by relatively clean surface water runoff (WRD @ Bridge) was also near-neutral but with higher pH (7.5) and lower salinity (EC 288 S/cm). Dissolved arsenic was relatively low (91 g/L) but total arsenic was relatively high (1.5 mg/L) indicating that arsenic is mainly in particulate form as this drainage enters Morning Star Creek. This is consistent with the high turbidity observed and measured TSS of 256 mg/L. Based on a measured flow rate of 0.17 L/s, the arsenic load at this location is estimated at around 1 g/day (dissolved As) and 22 g/day (total As). The effect on Morning Star Creek was to raise total As from <1 g/L (at site “MU”) to 3 g/L (at site “MM” which is located between the bridge and Settling Pond).

Arsenic loads from the above-ground waste rock (22 g/day) are equivalent to approximately 5-10% of raw mine water arsenic loads (around 300 g/day based on 1.5 mg/L at 2.3 L/s).

Strategies can likely be developed to lower arsenic concentrations in site water and management methods need to be focussed on:

Preventing or minimising pyrite oxidation within backfilled (and above-ground) mine wastes.

Controlling or minimising the rate of water infiltration into the mine.



24 August 2018

RECOMMENDATIONS

Key recommendations arising from the field work program conducted by Earth Systems from 30 July to 1 August 2018 are summarised below:

1. Modify WTP as outlined in this report and illustrated in Attachment B.

2. Develop and implement a commissioning program for the modified WTP.

3. Use PFS for emergency response lowering of sulfide concentrations in the Settling Pond, if required.

4. Consider the need to collect above-ground waste rock dump drainage for treatment at the modified WTP.

5. Develop short term and long term management strategies for underground waste rock backfill in order to lower arsenic concentrations in the raw mine water.

6. Establish early warning EC monitoring system in Morning Star Creek downstream of the mine site and develop emergency response plan for implementation should an EC alarm be triggered.

7. Upon confirmation of regulatory criteria for receiving water quality, develop a mixing zone / dilution calculator that site personnel can use on a daily basis to confirm suitability of treated water for off-site discharge.

8. Review and update routine site water monitoring procedures to verify the efficiency of the modified WTP operation and compliance with regulatory water quality criteria.

9. Conduct sludge characterisation and stability testwork to investigate the feasibility of various backfill options for sludge disposal.

10. In order to lower arsenic release from underground sulfidic rock fill:

Consider options for minimising air entry, pyrite oxidation and associated release of arsenic from arsenopyrite during operations, to lower current arsenic loads and predicted future increases in future arsenic loads in the raw mine water (as the mine is dewatered to increasing depths) such as:

- Capping / encapsulating waste rock fill in the mine voids with low permeability materials (eg. cement stabilised tailings, cement stabilised oxidised WTP sludge, other on-site materials).

- Strategic placement of alkalinity generating materials above sulfidic mine wastes to passivate sulfide minerals in unsaturated waste rock fill.

Consider options for minimising air entry, pyrite oxidation and associated release of arsenic from arsenopyrite during closure plan development for the site. For example, an inert atmosphere system installation would provide a mechanism for halting arsenic release from the mine into the creek post closure.

11. Key recommendations relating to drainage from above-ground waste rock fill include:

Establish a filtration system to lower particulate arsenic concentrations from waste rock drainage before it enters Morning Star Creek.

Conduct regular monitoring (at least monthly) of waste rock drainage water chemistry and flow rates to ensure that creek water quality is not adversely affected.

Consider further lowering arsenic concentrations in drainage to Morning Star Creek as follows:



24 August 2018

- Direct all waste rock drainage to a centralised sump to avoid uncontrolled release off site.

- Utilise existing pump to transfer the waste rock drainage from the centralised sump up to the WTP for treatment.

- Conduct regular monitoring (at least monthly) of waste rock drainage water chemistry and flow rates and ensure that the modified WTP capacity can handle these additional inflows.

12. Assess the opportunities for controlling or minimising the rate of water infiltration into the mine.

13. Conduct materials characterisation (chemical and mineralogical) and (kinetic) stability testwork on basal sediments from the settling pond as it is decommissioned to identify what can be safely disposed on site, and to clarify suitable disposal methods.

REFERENCES

Earth Systems (2018). Preliminary Data Review of Current Approach to Site Water Treatment. Technical Memorandum prepared by Earth Systems for Morning Star Gold. June 2018.



24 August 2018

ATTACHMENT A

LABORATORY REPORT

0 0.00 True

Environmental

CERTIFICATE OF ANALYSISWork Order : Page : 1 of 27EM1812407

:: LaboratoryClient EARTH SYSTEMS PTY LTD Environmental Division Melbourne

: :ContactContact MS SOPHIE PAPE Larissa Burns

:: AddressAddress 14 Church St

Hawthorn VIC, AUSTRALIA 3122

4 Westall Rd Springvale VIC Australia 3171

:Telephone +61 03 9810 7500 :Telephone +61-3-8549 9600

:Project MS1989 Date Samples Received : 03-Aug-2018 16:00

:Order number Date Analysis Commenced : 03-Aug-2018

:C-O-C number ---- Issue Date : 14-Aug-2018 15:51

Sampler : SOPHIE PAPE

Site : ----

Quote number : EN/222/18

25:No. of samples received

25:No. of samples analysed

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. This document shall not be reproduced, except in full.

This Certificate of Analysis contains the following information:

l General Comments

l Analytical Results

Additional information pertinent to this report will be found in the following separate attachments: Quality Control Report, QA/QC Compliance Assessment to assist with

Quality Review and Sample Receipt Notification.

SignatoriesThis document has been electronically signed by the authorized signatories below. Electronic signing is carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Ankit Joshi Inorganic Chemist Sydney Inorganics, Smithfield, NSW

Dilani Fernando Senior Inorganic Chemist Melbourne Inorganics, Springvale, VIC

Nikki Stepniewski Senior Inorganic Instrument Chemist Melbourne Inorganics, Springvale, VIC

R I G H T S O L U T I O N S | R I G H T P A R T N E R

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EM1812407

MS1989:Project

EARTH SYSTEMS PTY LTD

General Comments

The analytical procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the USEPA, APHA, AS and NEPM. In house

developed procedures are employed in the absence of documented standards or by client request.

Where moisture determination has been performed, results are reported on a dry weight basis.

Where a reported less than (<) result is higher than the LOR, this may be due to primary sample extract/digestate dilution and/or insufficient sample for analysis.

Where the LOR of a reported result differs from standard LOR, this may be due to high moisture content, insufficient sample (reduced weight employed) or matrix interference.

When sampling time information is not provided by the client, sampling dates are shown without a time component. In these instances, the time component has been assumed by the laboratory for processing

purposes.

Where a result is required to meet compliance limits the associated uncertainty must be considered. Refer to the ALS Contact for details.

CAS Number = CAS registry number from database maintained by Chemical Abstracts Services. The Chemical Abstracts Service is a division of the American Chemical Society.

LOR = Limit of reporting

^ = This result is computed from individual analyte detections at or above the level of reporting

ø = ALS is not NATA accredited for these tests.

~ = Indicates an estimated value.

Key :

EK040P: EM1812407 #7,8 Insufficient sample to confirm Fluoride Duplicate and Matrix Spike results. Have been dummied throughl

EK085, EM1812407 - 20: Sample required dilution prior to sulphide analysis due to matrix effect. LOR has been adjusted accordingly.l

pH analysis is done under non-stirring condition.l

EG020T:EM1812407#20 and #21 Total Barrium and Zinc results have been confirmed by redigestion and reanalysis.l

Ionic Balance out of acceptable limits for sample #20 due to analytes not quantified in this report.l

Ionic balances were calculated using: major anions - chloride, alkalinity and sulfate; and major cations - calcium, magnesium, potassium and sodium.l

ED045G: The presence of thiocyanate can positively contribute to the chloride result, thereby may bias results higher than expected. Results should be scrutinised accordingly.l

ED041G: EM1812407-006 Poor matrix spike recovery for sulfate due to sample matrix. Confirmed by re-extraction and re-analysis.l

EA016: Calculated TDS is determined from Electrical conductivity using a conversion factor of 0.65.l

Sodium Adsorption Ratio (where reported): Where results for Na, Ca or Mg are <LOR, a concentration at half the reported LOR is incorporated into the SAR calculation. This represents a conservative approach

for Na relative to the assumption that <LOR = zero concentration and a conservative approach for Ca & Mg relative to the assumption that <LOR is equivalent to the LOR concentration.

l

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Analytical Results

R1-PFS500-10R1-PFS200-10R1-PFS100-10R1-PFS50-10Winder Shaft Sump -

Fresh

Client sample IDSub-Matrix: WATER

(Matrix: WATER)

30-Jul-2018 00:0030-Jul-2018 00:0030-Jul-2018 00:0030-Jul-2018 00:0030-Jul-2018 00:00Client sampling date / time

EM1812407-005EM1812407-004EM1812407-003EM1812407-002EM1812407-001UnitLORCAS NumberCompound

Result Result Result Result Result

EA005P: pH by PC Titrator

7.98 ---- ---- ---- ----pH Unit0.01----pH Value

EA010P: Conductivity by PC Titrator

818 ---- ---- ---- ----µS/cm1----Electrical Conductivity @ 25°C

EA016: Calculated TDS (from Electrical Conductivity)

532 ---- ---- ---- ----mg/L1----Total Dissolved Solids (Calc.)

EA065: Total Hardness as CaCO3

382 ---- ---- ---- ----mg/L1----Total Hardness as CaCO3

ED037P: Alkalinity by PC Titrator

<1Hydroxide Alkalinity as CaCO3 ---- ---- ---- ----mg/L1DMO-210-001

<1Carbonate Alkalinity as CaCO3 ---- ---- ---- ----mg/L13812-32-6

239Bicarbonate Alkalinity as CaCO3 ---- ---- ---- ----mg/L171-52-3

239 ---- ---- ---- ----mg/L1----Total Alkalinity as CaCO3

ED041G: Sulfate (Turbidimetric) as SO4 2- by DA

246Sulfate as SO4 - Turbidimetric ---- ---- ---- ----mg/L114808-79-8

ED045G: Chloride by Discrete Analyser

4Chloride ---- ---- ---- ----mg/L116887-00-6

ED093F: Dissolved Major Cations

82Calcium ---- ---- ---- ----mg/L17440-70-2

43Magnesium ---- ---- ---- ----mg/L17439-95-4

34Sodium ---- ---- ---- ----mg/L17440-23-5

1Potassium ---- ---- ---- ----mg/L17440-09-7

EG020F: Dissolved Metals by ICP-MS

<0.01Aluminium ---- ---- ---- ----mg/L0.017429-90-5

<0.001Dysprosium ---- ---- ---- ----mg/L0.0017429-91-6

<0.001Silver ---- ---- ---- ----mg/L0.0017440-22-4

<0.001Bismuth ---- ---- ---- ----mg/L0.0017440-69-9

<0.001Erbium ---- ---- ---- ----mg/L0.0017440-52-0

1.38Arsenic 0.595 0.211 0.058 0.022mg/L0.0017440-38-2

<0.05Boron ---- ---- ---- ----mg/L0.057440-42-8

<0.001Europium ---- ---- ---- ----mg/L0.0017440-53-1

2.06Strontium ---- ---- ---- ----mg/L0.0017440-24-6

0.042Barium ---- ---- ---- ----mg/L0.0017440-39-3

<0.001Gadolinium ---- ---- ---- ----mg/L0.0017440-54-2

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Analytical Results


Fresh


(Matrix: WATER)




EG020F: Dissolved Metals by ICP-MS - Continued

<0.01Titanium ---- ---- ---- ----mg/L0.017440-32-6

<0.001Beryllium ---- ---- ---- ----mg/L0.0017440-41-7

<0.001Gallium ---- ---- ---- ----mg/L0.0017440-55-3

<0.0001Cadmium ---- ---- ---- ----mg/L0.00017440-43-9

<0.01Hafnium ---- ---- ---- ----mg/L0.017440-58-6

<0.005Tellurium ---- ---- ---- ----mg/L0.00522541-49-7

<0.001Cobalt ---- ---- ---- ----mg/L0.0017440-48-4

<0.001Holmium ---- ---- ---- ----mg/L0.0017440-60-0

0.001Uranium ---- ---- ---- ----mg/L0.0017440-61-1

<0.001Caesium ---- ---- ---- ----mg/L0.0017440-46-2

<0.001Chromium ---- ---- ---- ----mg/L0.0017440-47-3

<0.001Indium ---- ---- ---- ----mg/L0.0017440-74-6

<0.001Copper ---- ---- ---- ----mg/L0.0017440-50-8

<0.001Lanthanum ---- ---- ---- ----mg/L0.0017439-91-0

0.002Rubidium ---- ---- ---- ----mg/L0.0017440-17-7

0.021Lithium ---- ---- ---- ----mg/L0.0017439-93-2

<0.001Lutetium ---- ---- ---- ----mg/L0.0017439-94-3

<0.001Thorium ---- ---- ---- ----mg/L0.0017440-29-1

<0.001Cerium ---- ---- ---- ----mg/L0.0017440-45-1

0.121Manganese 0.125 0.132 0.145 0.180mg/L0.0017439-96-5

<0.001Neodymium ---- ---- ---- ----mg/L0.0017440-00-8

<0.001Molybdenum ---- ---- ---- ----mg/L0.0017439-98-7

<0.001Praseodymium ---- ---- ---- ----mg/L0.0017440-10-0

0.001Nickel ---- ---- ---- ----mg/L0.0017440-02-0

<0.001Samarium ---- ---- ---- ----mg/L0.0017440-19-9

<0.001Lead ---- ---- ---- ----mg/L0.0017439-92-1

<0.001Terbium ---- ---- ---- ----mg/L0.0017440-27-9

0.002Antimony ---- ---- ---- ----mg/L0.0017440-36-0

<0.001Thulium ---- ---- ---- ----mg/L0.0017440-30-4

<0.01Selenium ---- ---- ---- ----mg/L0.017782-49-2

<0.001Ytterbium ---- ---- ---- ----mg/L0.0017440-64-4

<0.001Tin ---- ---- ---- ----mg/L0.0017440-31-5

<0.001Yttrium ---- ---- ---- ----mg/L0.0017440-65-5

<0.001Thallium ---- ---- ---- ----mg/L0.0017440-28-0

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Analytical Results


Fresh


(Matrix: WATER)





<0.005Zirconium ---- ---- ---- ----mg/L0.0057440-67-7

<0.01Vanadium ---- ---- ---- ----mg/L0.017440-62-2

0.015Zinc ---- ---- ---- ----mg/L0.0057440-66-6

0.15Iron 0.06 <0.05 <0.05 0.07mg/L0.057439-89-6

EG020T: Total Metals by ICP-MS

0.02Aluminium ---- ---- ---- ----mg/L0.017429-90-5

<0.001Dysprosium ---- ---- ---- ----mg/L0.0017429-91-6

0.002Silver ---- ---- ---- ----mg/L0.0017440-22-4

1.45Arsenic 1.53 1.50 1.48 1.53mg/L0.0017440-38-2

0.002Bismuth ---- ---- ---- ----mg/L0.0017440-69-9

<0.001Erbium ---- ---- ---- ----mg/L0.0017440-52-0

<0.05Boron ---- ---- ---- ----mg/L0.057440-42-8

<0.001Europium ---- ---- ---- ----mg/L0.0017440-53-1

2.14Strontium ---- ---- ---- ----mg/L0.0017440-24-6

0.044Barium ---- ---- ---- ----mg/L0.0017440-39-3

<0.001Gadolinium ---- ---- ---- ----mg/L0.0017440-54-2

<0.01Titanium ---- ---- ---- ----mg/L0.017440-32-6

<0.001Beryllium ---- ---- ---- ----mg/L0.0017440-41-7

<0.001Gallium ---- ---- ---- ----mg/L0.0017440-55-3

<0.0001Cadmium ---- ---- ---- ----mg/L0.00017440-43-9

<0.01Hafnium ---- ---- ---- ----mg/L0.017440-58-6

<0.005Tellurium ---- ---- ---- ----mg/L0.00522541-49-7

<0.001Cobalt ---- ---- ---- ----mg/L0.0017440-48-4

<0.001Holmium ---- ---- ---- ----mg/L0.0017440-60-0

0.001Uranium ---- ---- ---- ----mg/L0.0017440-61-1

0.001Caesium ---- ---- ---- ----mg/L0.0017440-46-2

<0.001Chromium ---- ---- ---- ----mg/L0.0017440-47-3

<0.001Indium ---- ---- ---- ----mg/L0.0017440-74-6

<0.001Copper ---- ---- ---- ----mg/L0.0017440-50-8

<0.001Lanthanum ---- ---- ---- ----mg/L0.0017439-91-0

0.002Rubidium ---- ---- ---- ----mg/L0.0017440-17-7

0.022Lithium ---- ---- ---- ----mg/L0.0017439-93-2

<0.001Lutetium ---- ---- ---- ----mg/L0.0017439-94-3

<0.001Thorium ---- ---- ---- ----mg/L0.0017440-29-1

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Analytical Results


Fresh


(Matrix: WATER)




EG020T: Total Metals by ICP-MS - Continued

<0.001Cerium ---- ---- ---- ----mg/L0.0017440-45-1

0.124Manganese 0.138 0.141 0.149 0.182mg/L0.0017439-96-5

<0.001Neodymium ---- ---- ---- ----mg/L0.0017440-00-8

<0.001Molybdenum ---- ---- ---- ----mg/L0.0017439-98-7


<0.001Nickel ---- ---- ---- ----mg/L0.0017440-02-0

<0.001Samarium ---- ---- ---- ----mg/L0.0017440-19-9

<0.001Lead ---- ---- ---- ----mg/L0.0017439-92-1

<0.001Terbium ---- ---- ---- ----mg/L0.0017440-27-9

0.002Antimony ---- ---- ---- ----mg/L0.0017440-36-0

<0.001Thulium ---- ---- ---- ----mg/L0.0017440-30-4

<0.01Selenium ---- ---- ---- ----mg/L0.017782-49-2

<0.001Ytterbium ---- ---- ---- ----mg/L0.0017440-64-4

<0.001Tin ---- ---- ---- ----mg/L0.0017440-31-5

<0.001Yttrium ---- ---- ---- ----mg/L0.0017440-65-5

<0.001Thallium ---- ---- ---- ----mg/L0.0017440-28-0

<0.005Zirconium ---- ---- ---- ----mg/L0.0057440-67-7

<0.01Vanadium ---- ---- ---- ----mg/L0.017440-62-2

0.018Zinc ---- ---- ---- ----mg/L0.0057440-66-6

0.28Iron 3.96 6.79 13.9 41.5mg/L0.057439-89-6

EK040P: Fluoride by PC Titrator

0.1Fluoride ---- ---- ---- ----mg/L0.116984-48-8

EK055G: Ammonia as N by Discrete Analyser

0.09Ammonia as N ---- ---- ---- ----mg/L0.017664-41-7

EK057G: Nitrite as N by Discrete Analyser

<0.01Nitrite as N ---- ---- ---- ----mg/L0.0114797-65-0

EK058G: Nitrate as N by Discrete Analyser

0.15Nitrate as N ---- ---- ---- ----mg/L0.0114797-55-8

EK059G: Nitrite plus Nitrate as N (NOx) by Discrete Analyser

0.15 ---- ---- ---- ----mg/L0.01----Nitrite + Nitrate as N

EK071G: Reactive Phosphorus as P by discrete analyser

0.43Reactive Phosphorus as P ---- ---- ---- ----mg/L0.0114265-44-2

EK085M: Sulfide as S2-

<0.1Sulfide as S2- ---- ---- ---- ----mg/L0.118496-25-8

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Analytical Results


Fresh


(Matrix: WATER)




EK085M: Sulfide as S2- - Continued

EN055: Ionic Balance

10.0 ---- ---- ---- ----meq/L0.01----Total Anions

9.14 ---- ---- ---- ----meq/L0.01----Total Cations

4.57 ---- ---- ---- ----%0.01----Ionic Balance

EP005: Total Organic Carbon (TOC)

1.2 ---- ---- ---- ----mg/L0.2----Total Organic Carbon

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Analytical Results

R4-PFS150-EndR4-PFS150-900R4-RawR3-AirR2-PFS200-420Client sample IDSub-Matrix: WATER

(Matrix: WATER)

01-Aug-2018 00:0001-Aug-2018 00:0031-Jul-2018 00:0031-Jul-2018 00:0031-Jul-2018 00:00Client sampling date / time




7.24 8.45 7.94 7.53 ----pH Unit0.01----pH Value


852 795 812 854 ----µS/cm1----Electrical Conductivity @ 25°C


---- 517 528 ---- ----mg/L1----Total Dissolved Solids (Calc.)


---- 382 379 ---- ----mg/L1----Total Hardness as CaCO3


----Hydroxide Alkalinity as CaCO3 <1 <1 ---- ----mg/L1DMO-210-001

----Carbonate Alkalinity as CaCO3 20 <1 ---- ----mg/L13812-32-6

----Bicarbonate Alkalinity as CaCO3 220 239 ---- ----mg/L171-52-3

---- 240 239 ---- ----mg/L1----Total Alkalinity as CaCO3


283Sulfate as SO4 - Turbidimetric 231 234 291 ----mg/L114808-79-8


----Chloride 3 3 ---- ----mg/L116887-00-6


----Calcium 82 81 ---- ----mg/L17440-70-2

----Magnesium 43 43 ---- ----mg/L17439-95-4

----Sodium 32 32 ---- ----mg/L17440-23-5

----Potassium 1 1 ---- ----mg/L17440-09-7


----Aluminium <0.01 <0.01 ---- ----mg/L0.017429-90-5

----Dysprosium <0.001 <0.001 ---- ----mg/L0.0017429-91-6

----Silver <0.001 <0.001 ---- ----mg/L0.0017440-22-4

----Bismuth <0.001 <0.001 ---- ----mg/L0.0017440-69-9

----Erbium <0.001 <0.001 ---- ----mg/L0.0017440-52-0

0.006Arsenic 1.35 1.46 0.016 ----mg/L0.0017440-38-2

----Boron <0.05 <0.05 ---- ----mg/L0.057440-42-8

----Europium <0.001 <0.001 ---- ----mg/L0.0017440-53-1

----Strontium 2.10 2.11 ---- ----mg/L0.0017440-24-6

----Barium 0.039 0.041 ---- ----mg/L0.0017440-39-3

----Gadolinium <0.001 <0.001 ---- ----mg/L0.0017440-54-2

----Titanium <0.01 <0.01 ---- ----mg/L0.017440-32-6

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Analytical Results


(Matrix: WATER)





----Beryllium <0.001 <0.001 ---- ----mg/L0.0017440-41-7

----Gallium <0.001 <0.001 ---- ----mg/L0.0017440-55-3

----Cadmium <0.0001 <0.0001 ---- ----mg/L0.00017440-43-9

----Hafnium <0.01 <0.01 ---- ----mg/L0.017440-58-6

----Tellurium <0.005 <0.005 ---- ----mg/L0.00522541-49-7

----Cobalt <0.001 <0.001 ---- ----mg/L0.0017440-48-4

----Holmium <0.001 <0.001 ---- ----mg/L0.0017440-60-0

----Uranium 0.001 0.001 ---- ----mg/L0.0017440-61-1

----Caesium <0.001 0.001 ---- ----mg/L0.0017440-46-2

----Chromium <0.001 <0.001 ---- ----mg/L0.0017440-47-3

----Indium <0.001 <0.001 ---- ----mg/L0.0017440-74-6

----Copper <0.001 <0.001 ---- ----mg/L0.0017440-50-8

----Lanthanum <0.001 <0.001 ---- ----mg/L0.0017439-91-0

----Rubidium 0.002 0.002 ---- ----mg/L0.0017440-17-7

----Lithium 0.021 0.022 ---- ----mg/L0.0017439-93-2

----Lutetium <0.001 <0.001 ---- ----mg/L0.0017439-94-3

----Thorium <0.001 <0.001 ---- ----mg/L0.0017440-29-1

----Cerium <0.001 <0.001 ---- ----mg/L0.0017440-45-1

0.142Manganese 0.108 0.094 0.106 ----mg/L0.0017439-96-5

----Neodymium <0.001 <0.001 ---- ----mg/L0.0017440-00-8

----Molybdenum <0.001 <0.001 ---- ----mg/L0.0017439-98-7

----Praseodymium <0.001 <0.001 ---- ----mg/L0.0017440-10-0

----Nickel <0.001 0.001 ---- ----mg/L0.0017440-02-0

----Samarium <0.001 <0.001 ---- ----mg/L0.0017440-19-9

----Lead <0.001 <0.001 ---- ----mg/L0.0017439-92-1

----Terbium <0.001 <0.001 ---- ----mg/L0.0017440-27-9

----Antimony 0.002 0.002 ---- ----mg/L0.0017440-36-0

----Thulium <0.001 <0.001 ---- ----mg/L0.0017440-30-4

----Selenium <0.01 <0.01 ---- ----mg/L0.017782-49-2

----Ytterbium <0.001 <0.001 ---- ----mg/L0.0017440-64-4

----Tin <0.001 <0.001 ---- ----mg/L0.0017440-31-5

----Yttrium <0.001 <0.001 ---- ----mg/L0.0017440-65-5

----Thallium <0.001 <0.001 ---- ----mg/L0.0017440-28-0

----Zirconium <0.005 <0.005 ---- ----mg/L0.0057440-67-7

----Vanadium <0.01 <0.01 ---- ----mg/L0.017440-62-2

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Analytical Results


(Matrix: WATER)





----Zinc 0.015 0.014 ---- ----mg/L0.0057440-66-6

<0.05Iron 0.08 0.07 <0.05 ----mg/L0.057439-89-6


----Aluminium 0.01 0.01 ---- ----mg/L0.017429-90-5

----Dysprosium <0.001 <0.001 ---- ----mg/L0.0017429-91-6

----Silver <0.001 <0.001 ---- ----mg/L0.0017440-22-4

0.274Arsenic 1.44 1.53 0.214 0.122mg/L0.0017440-38-2

----Bismuth <0.001 <0.001 ---- ----mg/L0.0017440-69-9

----Erbium <0.001 <0.001 ---- ----mg/L0.0017440-52-0

----Boron <0.05 <0.05 ---- ----mg/L0.057440-42-8

----Europium <0.001 <0.001 ---- ----mg/L0.0017440-53-1

----Strontium 2.15 2.18 ---- ----mg/L0.0017440-24-6

----Barium 0.043 0.041 ---- ----mg/L0.0017440-39-3

----Gadolinium <0.001 <0.001 ---- ----mg/L0.0017440-54-2

----Titanium <0.01 <0.01 ---- ----mg/L0.017440-32-6

----Beryllium <0.001 <0.001 ---- ----mg/L0.0017440-41-7

----Gallium <0.001 <0.001 ---- ----mg/L0.0017440-55-3

----Cadmium <0.0001 <0.0001 ---- ----mg/L0.00017440-43-9

----Hafnium <0.01 <0.01 ---- ----mg/L0.017440-58-6

----Tellurium <0.005 <0.005 ---- ----mg/L0.00522541-49-7

----Cobalt <0.001 <0.001 ---- ----mg/L0.0017440-48-4

----Holmium <0.001 <0.001 ---- ----mg/L0.0017440-60-0

----Uranium 0.001 0.001 ---- ----mg/L0.0017440-61-1

----Caesium 0.001 0.001 ---- ----mg/L0.0017440-46-2

----Chromium <0.001 <0.001 ---- ----mg/L0.0017440-47-3

----Indium <0.001 <0.001 ---- ----mg/L0.0017440-74-6

----Copper <0.001 <0.001 ---- ----mg/L0.0017440-50-8

----Lanthanum <0.001 <0.001 ---- ----mg/L0.0017439-91-0

----Rubidium 0.001 0.002 ---- ----mg/L0.0017440-17-7

----Lithium 0.019 0.019 ---- ----mg/L0.0017439-93-2

----Lutetium <0.001 <0.001 ---- ----mg/L0.0017439-94-3

----Thorium <0.001 <0.001 ---- ----mg/L0.0017440-29-1

----Cerium <0.001 <0.001 ---- ----mg/L0.0017440-45-1

0.145Manganese 0.112 0.095 0.108 0.105mg/L0.0017439-96-5

----Neodymium <0.001 <0.001 ---- ----mg/L0.0017440-00-8

11 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Molybdenum <0.001 <0.001 ---- ----mg/L0.0017439-98-7

----Praseodymium <0.001 <0.001 ---- ----mg/L0.0017440-10-0

----Nickel <0.001 <0.001 ---- ----mg/L0.0017440-02-0

----Samarium <0.001 <0.001 ---- ----mg/L0.0017440-19-9

----Lead <0.001 <0.001 ---- ----mg/L0.0017439-92-1

----Terbium <0.001 <0.001 ---- ----mg/L0.0017440-27-9

----Antimony 0.002 0.002 ---- ----mg/L0.0017440-36-0

----Thulium <0.001 <0.001 ---- ----mg/L0.0017440-30-4

----Selenium <0.01 <0.01 ---- ----mg/L0.017782-49-2

----Ytterbium <0.001 <0.001 ---- ----mg/L0.0017440-64-4

----Tin <0.001 <0.001 ---- ----mg/L0.0017440-31-5

----Yttrium <0.001 <0.001 ---- ----mg/L0.0017440-65-5

----Thallium <0.001 <0.001 ---- ----mg/L0.0017440-28-0

----Zirconium <0.005 <0.005 ---- ----mg/L0.0057440-67-7

----Vanadium <0.01 <0.01 ---- ----mg/L0.017440-62-2

----Zinc 0.024 0.014 ---- ----mg/L0.0057440-66-6

3.05Iron 0.28 0.21 1.61 0.89mg/L0.057439-89-6


----Fluoride 0.1 <0.1 ---- ----mg/L0.116984-48-8


----Ammonia as N 0.07 0.09 ---- ----mg/L0.017664-41-7


----Nitrite as N <0.01 0.02 ---- ----mg/L0.0114797-65-0


----Nitrate as N 0.17 0.15 ---- ----mg/L0.0114797-55-8


---- 0.17 0.17 ---- ----mg/L0.01----Nitrite + Nitrate as N


----Reactive Phosphorus as P 0.39 0.50 ---- ----mg/L0.0114265-44-2


----Sulfide as S2- <0.1 <0.1 ---- ----mg/L0.118496-25-8


---- 9.69 9.73 ---- ----meq/L0.01----Total Anions

---- 9.05 9.00 ---- ----meq/L0.01----Total Cations

12 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)




EN055: Ionic Balance - Continued

---- 3.42 3.92 ---- ----%0.01----Ionic Balance


---- 1.4 1.3 ---- ----mg/L0.2----Total Organic Carbon

13 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results

R5-PFS400-300R5-PFS300-300R5-PFS200-300R5-AeratedR4-PFS200-900Client sample IDSub-Matrix: WATER

(Matrix: WATER)

01-Aug-2018 00:0001-Aug-2018 00:0001-Aug-2018 00:0001-Aug-2018 00:0001-Aug-2018 00:00Client sampling date / time




7.29 8.46 7.48 7.28 7.12pH Unit0.01----pH Value


867 862 858 855 862µS/cm1----Electrical Conductivity @ 25°C


---- 560 ---- ---- ----mg/L1----Total Dissolved Solids (Calc.)


---- 373 ---- ---- ----mg/L1----Total Hardness as CaCO3


----Hydroxide Alkalinity as CaCO3 <1 ---- ---- ----mg/L1DMO-210-001

----Carbonate Alkalinity as CaCO3 15 ---- ---- ----mg/L13812-32-6

----Bicarbonate Alkalinity as CaCO3 221 ---- ---- ----mg/L171-52-3

---- 236 ---- ---- ----mg/L1----Total Alkalinity as CaCO3


311Sulfate as SO4 - Turbidimetric 223 286 324 329mg/L114808-79-8


----Chloride 3 ---- ---- ----mg/L116887-00-6


----Calcium 80 ---- ---- ----mg/L17440-70-2

----Magnesium 42 ---- ---- ----mg/L17439-95-4

----Sodium 31 ---- ---- ----mg/L17440-23-5

----Potassium 1 ---- ---- ----mg/L17440-09-7


----Aluminium <0.01 ---- ---- ----mg/L0.017429-90-5

----Dysprosium <0.001 ---- ---- ----mg/L0.0017429-91-6

----Silver <0.001 ---- ---- ----mg/L0.0017440-22-4

----Bismuth <0.001 ---- ---- ----mg/L0.0017440-69-9

----Erbium <0.001 ---- ---- ----mg/L0.0017440-52-0

0.009Arsenic 1.30 0.011 0.007 0.005mg/L0.0017440-38-2

----Boron <0.05 ---- ---- ----mg/L0.057440-42-8

----Europium <0.001 ---- ---- ----mg/L0.0017440-53-1

----Strontium 2.02 ---- ---- ----mg/L0.0017440-24-6

----Barium 0.039 ---- ---- ----mg/L0.0017440-39-3

----Gadolinium <0.001 ---- ---- ----mg/L0.0017440-54-2

----Titanium <0.01 ---- ---- ----mg/L0.017440-32-6

14 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Beryllium <0.001 ---- ---- ----mg/L0.0017440-41-7

----Gallium <0.001 ---- ---- ----mg/L0.0017440-55-3

----Cadmium <0.0001 ---- ---- ----mg/L0.00017440-43-9

----Hafnium <0.01 ---- ---- ----mg/L0.017440-58-6

----Tellurium <0.005 ---- ---- ----mg/L0.00522541-49-7

----Cobalt <0.001 ---- ---- ----mg/L0.0017440-48-4

----Holmium <0.001 ---- ---- ----mg/L0.0017440-60-0

----Uranium 0.001 ---- ---- ----mg/L0.0017440-61-1

----Caesium <0.001 ---- ---- ----mg/L0.0017440-46-2

----Chromium <0.001 ---- ---- ----mg/L0.0017440-47-3

----Indium <0.001 ---- ---- ----mg/L0.0017440-74-6

----Copper <0.001 ---- ---- ----mg/L0.0017440-50-8

----Lanthanum <0.001 ---- ---- ----mg/L0.0017439-91-0

----Rubidium 0.002 ---- ---- ----mg/L0.0017440-17-7

----Lithium 0.022 ---- ---- ----mg/L0.0017439-93-2

----Lutetium <0.001 ---- ---- ----mg/L0.0017439-94-3

----Thorium <0.001 ---- ---- ----mg/L0.0017440-29-1

----Cerium <0.001 ---- ---- ----mg/L0.0017440-45-1

0.122Manganese 0.106 0.127 0.135 0.145mg/L0.0017439-96-5

----Neodymium <0.001 ---- ---- ----mg/L0.0017440-00-8

----Molybdenum <0.001 ---- ---- ----mg/L0.0017439-98-7

----Praseodymium <0.001 ---- ---- ----mg/L0.0017440-10-0

----Nickel <0.001 ---- ---- ----mg/L0.0017440-02-0

----Samarium <0.001 ---- ---- ----mg/L0.0017440-19-9

----Lead <0.001 ---- ---- ----mg/L0.0017439-92-1

----Terbium <0.001 ---- ---- ----mg/L0.0017440-27-9

----Antimony 0.002 ---- ---- ----mg/L0.0017440-36-0

----Thulium <0.001 ---- ---- ----mg/L0.0017440-30-4

----Selenium <0.01 ---- ---- ----mg/L0.017782-49-2

----Ytterbium <0.001 ---- ---- ----mg/L0.0017440-64-4

----Tin <0.001 ---- ---- ----mg/L0.0017440-31-5

----Yttrium <0.001 ---- ---- ----mg/L0.0017440-65-5

----Thallium <0.001 ---- ---- ----mg/L0.0017440-28-0

----Zirconium <0.005 ---- ---- ----mg/L0.0057440-67-7

----Vanadium <0.01 ---- ---- ----mg/L0.017440-62-2

15 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Zinc 0.014 ---- ---- ----mg/L0.0057440-66-6

<0.05Iron 0.09 <0.05 <0.05 <0.05mg/L0.057439-89-6


----Aluminium 0.01 ---- ---- ----mg/L0.017429-90-5

----Dysprosium <0.001 ---- ---- ----mg/L0.0017429-91-6

----Silver <0.001 ---- ---- ----mg/L0.0017440-22-4

0.170Arsenic 1.39 0.364 0.331 0.287mg/L0.0017440-38-2

----Bismuth <0.001 ---- ---- ----mg/L0.0017440-69-9

----Erbium <0.001 ---- ---- ----mg/L0.0017440-52-0

----Boron <0.05 ---- ---- ----mg/L0.057440-42-8

----Europium <0.001 ---- ---- ----mg/L0.0017440-53-1

----Strontium 2.06 ---- ---- ----mg/L0.0017440-24-6

----Barium 0.041 ---- ---- ----mg/L0.0017440-39-3

----Gadolinium <0.001 ---- ---- ----mg/L0.0017440-54-2

----Titanium <0.01 ---- ---- ----mg/L0.017440-32-6

----Beryllium <0.001 ---- ---- ----mg/L0.0017440-41-7

----Gallium <0.001 ---- ---- ----mg/L0.0017440-55-3

----Cadmium <0.0001 ---- ---- ----mg/L0.00017440-43-9

----Hafnium <0.01 ---- ---- ----mg/L0.017440-58-6

----Tellurium <0.005 ---- ---- ----mg/L0.00522541-49-7

----Cobalt <0.001 ---- ---- ----mg/L0.0017440-48-4

----Holmium <0.001 ---- ---- ----mg/L0.0017440-60-0

----Uranium 0.001 ---- ---- ----mg/L0.0017440-61-1

----Caesium 0.001 ---- ---- ----mg/L0.0017440-46-2

----Chromium <0.001 ---- ---- ----mg/L0.0017440-47-3

----Indium <0.001 ---- ---- ----mg/L0.0017440-74-6

----Copper <0.001 ---- ---- ----mg/L0.0017440-50-8

----Lanthanum <0.001 ---- ---- ----mg/L0.0017439-91-0

----Rubidium 0.001 ---- ---- ----mg/L0.0017440-17-7

----Lithium 0.021 ---- ---- ----mg/L0.0017439-93-2

----Lutetium <0.001 ---- ---- ----mg/L0.0017439-94-3

----Thorium <0.001 ---- ---- ----mg/L0.0017440-29-1

----Cerium <0.001 ---- ---- ----mg/L0.0017440-45-1

0.125Manganese 0.110 0.124 0.140 0.149mg/L0.0017439-96-5

----Neodymium <0.001 ---- ---- ----mg/L0.0017440-00-8

16 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Molybdenum <0.001 ---- ---- ----mg/L0.0017439-98-7

----Praseodymium <0.001 ---- ---- ----mg/L0.0017440-10-0

----Nickel <0.001 ---- ---- ----mg/L0.0017440-02-0

----Samarium <0.001 ---- ---- ----mg/L0.0017440-19-9

----Lead <0.001 ---- ---- ----mg/L0.0017439-92-1

----Terbium <0.001 ---- ---- ----mg/L0.0017440-27-9

----Antimony 0.002 ---- ---- ----mg/L0.0017440-36-0

----Thulium <0.001 ---- ---- ----mg/L0.0017440-30-4

----Selenium <0.01 ---- ---- ----mg/L0.017782-49-2

----Ytterbium <0.001 ---- ---- ----mg/L0.0017440-64-4

----Tin <0.001 ---- ---- ----mg/L0.0017440-31-5

----Yttrium <0.001 ---- ---- ----mg/L0.0017440-65-5

----Thallium <0.001 ---- ---- ----mg/L0.0017440-28-0

----Zirconium <0.005 ---- ---- ----mg/L0.0057440-67-7

----Vanadium <0.01 ---- ---- ----mg/L0.017440-62-2

----Zinc 0.022 ---- ---- ----mg/L0.0057440-66-6

1.52Iron 0.26 3.76 4.12 4.11mg/L0.057439-89-6


----Fluoride 0.1 ---- ---- ----mg/L0.116984-48-8


----Ammonia as N 0.09 ---- ---- ----mg/L0.017664-41-7


----Nitrite as N <0.01 ---- ---- ----mg/L0.0114797-65-0


----Nitrate as N 0.19 ---- ---- ----mg/L0.0114797-55-8


---- 0.19 ---- ---- ----mg/L0.01----Nitrite + Nitrate as N


----Reactive Phosphorus as P 0.34 ---- ---- ----mg/L0.0114265-44-2


----Sulfide as S2- <0.1 ---- ---- ----mg/L0.118496-25-8


---- 9.44 ---- ---- ----meq/L0.01----Total Anions

---- 8.82 ---- ---- ----meq/L0.01----Total Cations

17 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)




EN055: Ionic Balance - Continued

---- 3.39 ---- ---- ----%0.01----Ionic Balance


---- 1.3 ---- ---- ----mg/L0.2----Total Organic Carbon

18 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results

OPWRD @ SPMMWRD @ BridgeMUClient sample IDSub-Matrix: WATER

(Matrix: WATER)





7.02 7.20 6.84 7.17 7.49pH Unit0.01----pH Value




25 194 25 387 493mg/L1----Total Dissolved Solids (Calc.)

EA025: Total Suspended Solids dried at 104 ± 2°C

---- 256 ---- ---- 40mg/L5----Suspended Solids (SS)


9 119 9 251 246mg/L1----Total Hardness as CaCO3


<1Hydroxide Alkalinity as CaCO3 <1 <1 <1 <1mg/L1DMO-210-001

<1Carbonate Alkalinity as CaCO3 <1 <1 <1 <1mg/L13812-32-6

12Bicarbonate Alkalinity as CaCO3 26 11 73 130mg/L171-52-3

12 26 11 73 130mg/L1----Total Alkalinity as CaCO3




3Chloride 3 3 4 48mg/L116887-00-6


2Calcium 28 2 61 54mg/L17440-70-2

1Magnesium 12 1 24 27mg/L17439-95-4

3Sodium 8 3 15 52mg/L17440-23-5

<1Potassium 2 <1 3 1mg/L17440-09-7


----Aluminium 0.04 ---- ---- 0.02mg/L0.017429-90-5

----Dysprosium <0.001 ---- ---- <0.001mg/L0.0017429-91-6

----Silver <0.001 ---- ---- 0.002mg/L0.0017440-22-4

----Bismuth <0.001 ---- ---- <0.001mg/L0.0017440-69-9

----Erbium <0.001 ---- ---- <0.001mg/L0.0017440-52-0

----Arsenic 0.091 ---- ---- 0.063mg/L0.0017440-38-2

----Boron <0.05 ---- ---- 0.16mg/L0.057440-42-8

----Europium <0.001 ---- ---- <0.001mg/L0.0017440-53-1

----Strontium 0.327 ---- ---- 1.54mg/L0.0017440-24-6

----Barium 0.014 ---- ---- 0.079mg/L0.0017440-39-3

19 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Gadolinium <0.001 ---- ---- <0.001mg/L0.0017440-54-2

----Titanium <0.01 ---- ---- <0.01mg/L0.017440-32-6

----Beryllium <0.001 ---- ---- <0.001mg/L0.0017440-41-7

----Gallium <0.001 ---- ---- <0.001mg/L0.0017440-55-3

----Cadmium <0.0001 ---- ---- <0.0001mg/L0.00017440-43-9

----Hafnium <0.01 ---- ---- <0.01mg/L0.017440-58-6

----Tellurium <0.005 ---- ---- <0.005mg/L0.00522541-49-7

----Cobalt <0.001 ---- ---- <0.001mg/L0.0017440-48-4

----Holmium <0.001 ---- ---- <0.001mg/L0.0017440-60-0

----Uranium <0.001 ---- ---- <0.001mg/L0.0017440-61-1

----Caesium <0.001 ---- ---- <0.001mg/L0.0017440-46-2

----Chromium <0.001 ---- ---- <0.001mg/L0.0017440-47-3

----Indium <0.001 ---- ---- <0.001mg/L0.0017440-74-6

----Copper 0.001 ---- ---- <0.001mg/L0.0017440-50-8

----Lanthanum <0.001 ---- ---- <0.001mg/L0.0017439-91-0

----Rubidium 0.001 ---- ---- <0.001mg/L0.0017440-17-7

----Lithium 0.005 ---- ---- 0.015mg/L0.0017439-93-2

----Lutetium <0.001 ---- ---- <0.001mg/L0.0017439-94-3

----Thorium <0.001 ---- ---- <0.001mg/L0.0017440-29-1

----Cerium <0.001 ---- ---- <0.001mg/L0.0017440-45-1

----Manganese 0.059 ---- ---- 0.095mg/L0.0017439-96-5

----Neodymium <0.001 ---- ---- <0.001mg/L0.0017440-00-8

----Molybdenum <0.001 ---- ---- <0.001mg/L0.0017439-98-7

----Praseodymium <0.001 ---- ---- <0.001mg/L0.0017440-10-0

----Nickel 0.003 ---- ---- 0.002mg/L0.0017440-02-0

----Samarium <0.001 ---- ---- <0.001mg/L0.0017440-19-9

----Lead <0.001 ---- ---- <0.001mg/L0.0017439-92-1

----Terbium <0.001 ---- ---- <0.001mg/L0.0017440-27-9

----Antimony 0.002 ---- ---- 0.001mg/L0.0017440-36-0

----Thulium <0.001 ---- ---- <0.001mg/L0.0017440-30-4

----Selenium <0.01 ---- ---- <0.01mg/L0.017782-49-2

----Ytterbium <0.001 ---- ---- <0.001mg/L0.0017440-64-4

----Tin <0.001 ---- ---- <0.001mg/L0.0017440-31-5

----Yttrium <0.001 ---- ---- <0.001mg/L0.0017440-65-5

----Thallium <0.001 ---- ---- <0.001mg/L0.0017440-28-0

20 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





----Zirconium <0.005 ---- ---- <0.005mg/L0.0057440-67-7

----Vanadium <0.01 ---- ---- <0.01mg/L0.017440-62-2

----Zinc 0.017 ---- ---- 0.060mg/L0.0057440-66-6

----Iron <0.05 ---- ---- <0.05mg/L0.057439-89-6


0.02Aluminium 1.23 0.02 0.08 8.06mg/L0.017429-90-5

<0.001Dysprosium 0.001 <0.001 <0.001 <0.001mg/L0.0017429-91-6

<0.001Silver <0.001 <0.001 <0.001 <0.001mg/L0.0017440-22-4

<0.001Arsenic 1.50 0.003 0.238 0.401mg/L0.0017440-38-2

<0.001Bismuth <0.001 <0.001 <0.001 <0.001mg/L0.0017440-69-9

<0.001Erbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-52-0

<0.05Boron <0.05 <0.05 <0.05 <0.05mg/L0.057440-42-8

<0.001Europium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-53-1

0.023Strontium 0.359 0.022 0.819 1.64mg/L0.0017440-24-6

0.004Barium 0.035 0.004 0.024 0.028mg/L0.0017440-39-3

<0.001Gadolinium 0.002 <0.001 <0.001 <0.001mg/L0.0017440-54-2

<0.01Titanium 0.02 <0.01 <0.01 <0.01mg/L0.017440-32-6

<0.001Beryllium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-41-7

<0.001Gallium <0.001 <0.001 <0.001 0.001mg/L0.0017440-55-3

<0.0001Cadmium 0.0002 <0.0001 0.0002 <0.0001mg/L0.00017440-43-9

<0.01Hafnium <0.01 <0.01 <0.01 <0.01mg/L0.017440-58-6

<0.005Tellurium <0.005 <0.005 <0.005 <0.005mg/L0.00522541-49-7

<0.001Cobalt 0.006 <0.001 0.002 <0.001mg/L0.0017440-48-4

<0.001Holmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-60-0

<0.001Uranium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-61-1

<0.001Caesium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-46-2

<0.001Chromium 0.002 <0.001 <0.001 <0.001mg/L0.0017440-47-3

<0.001Indium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-74-6

<0.001Copper 0.020 <0.001 0.002 0.003mg/L0.0017440-50-8

<0.001Lanthanum 0.003 <0.001 0.001 <0.001mg/L0.0017439-91-0

<0.001Rubidium 0.002 <0.001 0.002 0.002mg/L0.0017440-17-7

0.001Lithium 0.006 0.001 0.004 0.015mg/L0.0017439-93-2

<0.001Lutetium <0.001 <0.001 <0.001 <0.001mg/L0.0017439-94-3

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

<0.001Cerium 0.004 <0.001 <0.001 <0.001mg/L0.0017440-45-1

21 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





0.001Manganese 0.247 0.001 0.042 0.107mg/L0.0017439-96-5

<0.001Neodymium 0.004 <0.001 0.001 <0.001mg/L0.0017440-00-8

<0.001Molybdenum <0.001 <0.001 <0.001 <0.001mg/L0.0017439-98-7

<0.001Praseodymium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-10-0

<0.001Nickel 0.011 <0.001 0.004 0.003mg/L0.0017440-02-0

<0.001Samarium 0.001 <0.001 <0.001 <0.001mg/L0.0017440-19-9

<0.001Lead 0.017 <0.001 <0.001 <0.001mg/L0.0017439-92-1

<0.001Terbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-27-9

<0.001Antimony 0.004 <0.001 0.002 <0.001mg/L0.0017440-36-0

<0.001Thulium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-30-4

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.001Ytterbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-64-4

0.007Tin <0.001 <0.001 <0.001 <0.001mg/L0.0017440-31-5

<0.001Yttrium 0.009 <0.001 0.003 <0.001mg/L0.0017440-65-5

<0.001Thallium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-28-0

<0.005Zirconium <0.005 <0.005 <0.005 <0.005mg/L0.0057440-67-7

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

<0.005Zinc 0.140 0.009 0.044 0.036mg/L0.0057440-66-6

<0.05Iron 6.49 <0.05 0.24 0.09mg/L0.057439-89-6

EG035T: Total Recoverable Mercury by FIMS

<0.0001Mercury ---- <0.0001 ---- ----mg/L0.00017439-97-6


<0.1Fluoride <0.1 <0.1 <0.1 <0.1mg/L0.116984-48-8


0.02Ammonia as N 0.01 <0.01 <0.01 0.31mg/L0.017664-41-7


<0.01Nitrite as N 0.02 <0.01 <0.01 0.02mg/L0.0114797-65-0


0.20Nitrate as N 4.58 0.22 15.0 0.12mg/L0.0114797-55-8


0.20 4.60 0.22 15.0 0.14mg/L0.01----Nitrite + Nitrate as N


<0.01Reactive Phosphorus as P 0.01 <0.01 0.02 <0.01mg/L0.0114265-44-2


22 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





<0.1Sulfide as S2- <0.1 <0.1 <0.1 <0.5mg/L0.118496-25-8


0.37 2.66 0.35 5.61 8.39meq/L0.01----Total Anions

0.31 2.78 0.31 5.75 7.20meq/L0.01----Total Cations

---- ---- ---- 1.21 7.58%0.01----Ionic Balance

23 of 27:Page

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:Client

EM1812407

MS1989:Project


Analytical Results

CSGDGUMDSPClient sample IDSub-Matrix: WATER

(Matrix: WATER)





7.51 6.93 6.70 6.71 8.02pH Unit0.01----pH Value




497 26 18 20 168mg/L1----Total Dissolved Solids (Calc.)

EA025: Total Suspended Solids dried at 104 ± 2°C

<5 ---- ---- ---- ----mg/L5----Suspended Solids (SS)


304 13 <1 7 114mg/L1----Total Hardness as CaCO3


<1Hydroxide Alkalinity as CaCO3 <1 <1 <1 <1mg/L1DMO-210-001

<1Carbonate Alkalinity as CaCO3 <1 <1 <1 <1mg/L13812-32-6

125Bicarbonate Alkalinity as CaCO3 12 7 8 104mg/L171-52-3

125 12 7 8 104mg/L1----Total Alkalinity as CaCO3




28Chloride 3 3 3 4mg/L116887-00-6


69Calcium 2 <1 1 26mg/L17440-70-2

32Magnesium 2 <1 1 12mg/L17439-95-4

32Sodium 3 3 3 6mg/L17440-23-5

2Potassium <1 <1 <1 <1mg/L17440-09-7


0.02Aluminium ---- ---- ---- ----mg/L0.017429-90-5

<0.001Dysprosium ---- ---- ---- ----mg/L0.0017429-91-6

<0.001Silver ---- ---- ---- ----mg/L0.0017440-22-4

<0.001Bismuth ---- ---- ---- ----mg/L0.0017440-69-9

<0.001Erbium ---- ---- ---- ----mg/L0.0017440-52-0

0.243Arsenic ---- ---- ---- ----mg/L0.0017440-38-2

0.05Boron ---- ---- ---- ----mg/L0.057440-42-8

<0.001Europium ---- ---- ---- ----mg/L0.0017440-53-1

1.71Strontium ---- ---- ---- ----mg/L0.0017440-24-6

0.036Barium ---- ---- ---- ----mg/L0.0017440-39-3

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:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





<0.001Gadolinium ---- ---- ---- ----mg/L0.0017440-54-2

<0.01Titanium ---- ---- ---- ----mg/L0.017440-32-6

<0.001Beryllium ---- ---- ---- ----mg/L0.0017440-41-7

<0.001Gallium ---- ---- ---- ----mg/L0.0017440-55-3

<0.0001Cadmium ---- ---- ---- ----mg/L0.00017440-43-9

<0.01Hafnium ---- ---- ---- ----mg/L0.017440-58-6

<0.005Tellurium ---- ---- ---- ----mg/L0.00522541-49-7

0.001Cobalt ---- ---- ---- ----mg/L0.0017440-48-4

<0.001Holmium ---- ---- ---- ----mg/L0.0017440-60-0

<0.001Uranium ---- ---- ---- ----mg/L0.0017440-61-1

<0.001Caesium ---- ---- ---- ----mg/L0.0017440-46-2

<0.001Chromium ---- ---- ---- ----mg/L0.0017440-47-3

<0.001Indium ---- ---- ---- ----mg/L0.0017440-74-6

<0.001Copper ---- ---- ---- ----mg/L0.0017440-50-8

<0.001Lanthanum ---- ---- ---- ----mg/L0.0017439-91-0

0.002Rubidium ---- ---- ---- ----mg/L0.0017440-17-7

0.013Lithium ---- ---- ---- ----mg/L0.0017439-93-2

<0.001Lutetium ---- ---- ---- ----mg/L0.0017439-94-3

<0.001Thorium ---- ---- ---- ----mg/L0.0017440-29-1

<0.001Cerium ---- ---- ---- ----mg/L0.0017440-45-1

0.081Manganese ---- ---- ---- ----mg/L0.0017439-96-5

<0.001Neodymium ---- ---- ---- ----mg/L0.0017440-00-8

<0.001Molybdenum ---- ---- ---- ----mg/L0.0017439-98-7


0.003Nickel ---- ---- ---- ----mg/L0.0017440-02-0

<0.001Samarium ---- ---- ---- ----mg/L0.0017440-19-9

<0.001Lead ---- ---- ---- ----mg/L0.0017439-92-1

<0.001Terbium ---- ---- ---- ----mg/L0.0017440-27-9

0.003Antimony ---- ---- ---- ----mg/L0.0017440-36-0

<0.001Thulium ---- ---- ---- ----mg/L0.0017440-30-4

<0.01Selenium ---- ---- ---- ----mg/L0.017782-49-2

<0.001Ytterbium ---- ---- ---- ----mg/L0.0017440-64-4

<0.001Tin ---- ---- ---- ----mg/L0.0017440-31-5

<0.001Yttrium ---- ---- ---- ----mg/L0.0017440-65-5

<0.001Thallium ---- ---- ---- ----mg/L0.0017440-28-0

25 of 27:Page

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:Client

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MS1989:Project


Analytical Results


(Matrix: WATER)





<0.005Zirconium ---- ---- ---- ----mg/L0.0057440-67-7

<0.01Vanadium ---- ---- ---- ----mg/L0.017440-62-2

0.045Zinc ---- ---- ---- ----mg/L0.0057440-66-6

<0.05Iron ---- ---- ---- ----mg/L0.057439-89-6


0.76Aluminium 0.02 0.03 0.03 <0.01mg/L0.017429-90-5

<0.001Dysprosium <0.001 <0.001 <0.001 <0.001mg/L0.0017429-91-6

<0.001Silver <0.001 <0.001 <0.001 <0.001mg/L0.0017440-22-4

0.474Arsenic 0.007 <0.001 0.002 0.006mg/L0.0017440-38-2

<0.001Bismuth <0.001 <0.001 <0.001 <0.001mg/L0.0017440-69-9

<0.001Erbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-52-0

<0.05Boron <0.05 <0.05 <0.05 <0.05mg/L0.057440-42-8

<0.001Europium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-53-1

1.59Strontium 0.026 0.013 0.016 0.211mg/L0.0017440-24-6

0.030Barium 0.004 0.004 0.004 0.008mg/L0.0017440-39-3

<0.001Gadolinium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-54-2

<0.01Titanium <0.01 <0.01 <0.01 <0.01mg/L0.017440-32-6

<0.001Beryllium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-41-7

<0.001Gallium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-55-3

<0.0001Cadmium <0.0001 <0.0001 <0.0001 <0.0001mg/L0.00017440-43-9

<0.01Hafnium <0.01 <0.01 <0.01 <0.01mg/L0.017440-58-6

<0.005Tellurium <0.005 <0.005 <0.005 <0.005mg/L0.00522541-49-7

0.001Cobalt <0.001 <0.001 <0.001 <0.001mg/L0.0017440-48-4

<0.001Holmium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-60-0

<0.001Uranium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-61-1

<0.001Caesium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-46-2

<0.001Chromium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-47-3

<0.001Indium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-74-6

0.001Copper <0.001 <0.001 <0.001 <0.001mg/L0.0017440-50-8

<0.001Lanthanum <0.001 <0.001 <0.001 <0.001mg/L0.0017439-91-0

0.002Rubidium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-17-7

0.013Lithium 0.001 0.001 0.001 0.020mg/L0.0017439-93-2

<0.001Lutetium <0.001 <0.001 <0.001 <0.001mg/L0.0017439-94-3

<0.001Thorium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-29-1

<0.001Cerium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-45-1

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Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





0.082Manganese 0.003 0.002 0.002 0.004mg/L0.0017439-96-5

<0.001Neodymium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-00-8

<0.001Molybdenum <0.001 <0.001 <0.001 <0.001mg/L0.0017439-98-7

<0.001Praseodymium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-10-0

0.004Nickel <0.001 <0.001 <0.001 <0.001mg/L0.0017440-02-0

<0.001Samarium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-19-9

<0.001Lead <0.001 <0.001 <0.001 <0.001mg/L0.0017439-92-1

<0.001Terbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-27-9

0.003Antimony <0.001 <0.001 <0.001 <0.001mg/L0.0017440-36-0

<0.001Thulium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-30-4

<0.01Selenium <0.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

<0.001Ytterbium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-64-4

<0.001Tin <0.001 <0.001 <0.001 <0.001mg/L0.0017440-31-5

<0.001Yttrium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-65-5

<0.001Thallium <0.001 <0.001 <0.001 <0.001mg/L0.0017440-28-0

<0.005Zirconium <0.005 <0.005 <0.005 <0.005mg/L0.0057440-67-7

<0.01Vanadium <0.01 <0.01 <0.01 <0.01mg/L0.017440-62-2

0.027Zinc <0.005 <0.005 <0.005 0.008mg/L0.0057440-66-6

0.46Iron <0.05 <0.05 <0.05 <0.05mg/L0.057439-89-6

EG035T: Total Recoverable Mercury by FIMS

----Mercury <0.0001 <0.0001 <0.0001 ----mg/L0.00017439-97-6


<0.1Fluoride <0.1 <0.1 <0.1 0.1mg/L0.116984-48-8


0.09Ammonia as N 0.05 <0.01 <0.01 <0.01mg/L0.017664-41-7


0.02Nitrite as N <0.01 <0.01 <0.01 <0.01mg/L0.0114797-65-0


4.56Nitrate as N 0.21 0.14 0.16 0.05mg/L0.0114797-55-8


4.58 0.21 0.14 0.16 0.05mg/L0.01----Nitrite + Nitrate as N


0.05Reactive Phosphorus as P <0.01 <0.01 <0.01 <0.01mg/L0.0114265-44-2


27 of 27:Page

Work Order :

:Client

EM1812407

MS1989:Project


Analytical Results


(Matrix: WATER)





<0.1Sulfide as S2- <0.1 <0.1 <0.1 <0.1mg/L0.118496-25-8


7.91 0.37 0.24 0.26 2.86meq/L0.01----Total Anions

7.52 0.39 0.13 0.26 2.55meq/L0.01----Total Cations

2.52 ---- ---- ---- ----%0.01----Ionic Balance



24 August 2018

ATTACHMENT B

SCHEMATIC OF RECOMMENDED MODIFICATIONS TO WTP

Clean out base of WTP Buffer Tanks and Mill Supply Tank.Cover openings of all tanks to stop leaf litter entering tanks.

Optimum location of outlet pipe is ~20% of tank height and close to tank wall (opposite overflow side of tank) to maximise residence time whilst minimising potential for disruption of sludge at base of tank. Flow split evenly between 2 tanks.

Overflow from opposite side of each tank (relative to tank inflows).

Measure daily arsenic concentrationusing field test kit, in addition to continuous pH and turbidity monitoring at Tank 5.

Early warning EC probe at site "MD" connected to alarm system at WTP.Emergency response plan to include water impoundment in Morning Star Creek.

Testwork required to confirm geochemical stability of treatment sludge if co‐disposed with tailings in underground mine voids.

Disc diffuser or similar to be positioned ~10‐20 m below mine water level.Note: CO2 will be generated during sparging. Ensure sufficient ventilation to address this OHS risk.