Hydrogeological Baseline & Bore Completion Report ... - Geoscience

FINAL REPORT

HYDROGEOLOGICAL BASELINE AND BORE COMPLETION REPORT TWIN BONANZA GOLD PROJECT, TANAMI DESERT, NORTHERN TERRITORY

Twin Bonanza Gold Project

REPORT NUMBER: AB0101-01-01 - Ver B

Prepared For

ABM Resources NL

October 2014

SAPROLITE PTY LTD (ACN 135 590 724) PO Box 2234 Ellenbrook WA 6069 52B Mornington Parkway Ellenbrook WA 6069 Ph.: +61 8 6296 7760 www.saprolite.com.au Fax: +61 8 6296 7762 [email protected]

Copies of Final Reports to:ABM Resources NL (2)

Saprolite Environmental (1)

Saprolite Pty LtdABN 43 135 590 724

PO Box 2234 Ellenbrook WA 606952B Mornington Parkway Ellenbrook WA 6069

Ph: (+61 8) 6296 7760 I Fax: (+61 8) 6296 7762 I Email: [email protected]

24 October 2014 Project No: AB0101-01-01

ABM Resources NL Level 1, 141 Broadway Nedlands WA 6009

Attention: Justin Robins – Environmental Manager

Dear Justin:

Subject: Hydrogeological Baseline & Bore Completion Report

Twin Bonanza Gold Project, Tanami Desert, Northern Territory We are pleased to provide ABM Resources NL with copies of the above final report as per the distribution list on the front cover. Included in each report is a CD-ROM that contains the report in electronic format in its entirety.

We thank you for the opportunity to work on this project and look forward to being of assistance in the future.

Should you have any queries about the report, or about any other matter please do not hesitate to contact us.

Yours faithfully

SAPROLITE ENVIRONMENTAL

Shaun Wimbridge Garth Richards Environmental Hydrogeologist Senior Principal Consultant Managing Director cc.

24 October 2014 Twin Bonanza Gold Project Hydrogeological Baseline and Bore Completion Report

ABM Resources NL

SAPROLITE ENVIRONMENTAL i

EXECUTIVE SUMMARY

ABM Resources NL (ABM) is a mineral exploration company developing several gold discoveries in the Central Desert region of the Northern Territory of Australia. ABM proposes to develop and operate the Twin Bonanza Gold Project (TBGP) in the Tanami Desert, approximately 527 km west of Tennant Creek, 750km north-west of Alice Springs, and 14 km east of the Northern Territory and Western Australia border, Figure 1.

The development of the proposed gold mine will be undertaken in a staged approach with the stage two phase of mining projected to process between 120,000 and 150,000 tonnes of ore per annum over a two year period. The stage three phase is projected to process between 200,000 and 300,000 tonnes of ore per annum. The expected mine life is estimated to be approximately 4 to 5 years with further operations dependent on the results of exploration.

The original Project had a water supply demand that will peak at 11L/s (950kL/d) when the project reaches its full production phase (stage three). This maximum rate was not expected until the 4th year of the project. However, as the excavated ore is to be processed through the Coyote processing plant within Western Australia, and the water supply requirement is anticipated to be met by the existing production bores during the mining phases of the project, with a projected water demand of up to 0.8L/s (69kL/d).

Saprolite Environmental (Saprolite) was engaged by ABM to provide hydrogeological consultation and professional services in the development of hydrogeological baseline information and water resource assessment for the Project. This follows on from a Water Management Plan (WMP) (SWC, 2013a) that was submitted by ABM to the Northern Territory, Environmental Protection Authority (NT EPA), which formed part of ABM’s submission of their Draft Environmental Impact Statement (EIS) to the Northern Territory Government (NT Govt). Subsequent to the EIS, supplementary submissions were provided to the NT Govt in response to written submissions received from the exhibition of the EIS, and further information was provided to stakeholders to support the previously lodged draft EIS.

Hydrogeological works were undertaken in order to address the comments made by stakeholders in ABM’s draft EIS (Comments 21 and 22), that culminates in this report.

These hydrogeological works included:

• The drilling and installation of 18 monitoring bores; • The drilling and installation of a replacement production bore at Strezza’s; • The collection of baseline water chemistry from 11 monitoring bores and 3 production bores where

groundwater was present within the bores; and • The test pumping and hydraulic analysis of the pre-existing production bores, Corsair Bore and

Wilson’s Bore and the new replacement bore, Strezza’s/Timmy’s Bore 2.

The above works provided sufficient information to provide:

a) an initial set of baseline results comprising physical and chemical parameters; b) a water resource assessment and recommended pumping yields to meet the project water

requirements in the short to medium term; and c) a review of the groundwater monitoring program with recommendations.

Recommendations • Recommended pumping depths and pumping rates are provided in Table 6.1, which are

conservative estimates for a 5-year continuous period, as follows

o Corsair Bore: 120m @ 1.3L/s o Wilson’s Bore: 75m @ 1L/s (intermittent use only) o Strezza’s/Timmy’s Bore 2: 20m @ 5L/s


ABM Resources NL

SAPROLITE ENVIRONMENTAL ii

• The selection of suitably sized electro-submersible pumps should be undertaken using the advice of a pump engineer, or pump supplier, in liaison with a hydrogeologist.

• It is recommended that cooling shrouds be installed on all electro-submersible pumps, to force water flow over the pump motor to facilitate improved cooling.

• It is recommended that once bores are installed with suitably sized pumps, appropriate for the respective bore capacities, that careful monitoring of instantaneous yields, flow-meters, and water levels are maintained, and that regular (quarterly) reviews of the monitoring data and bore performance is undertaken by a hydrogeologist.

• It is recommended that a vegetation monitoring program be established to monitor any potential effects or impacts on the vegetation health from groundwater abstraction at Strezza’s/Timmy’s Bore 2.

• Should additional groundwater resources be required over and above the pumping capacity of the three existing production bores, then additional production bores could be located within the Strezza’s/Timmy’s Borefield area at a spacing of 1km from Strezza’s/Timmy’s Bore 2, along strike within the palaeovalley. A further groundwater exploration program utilising geophysical methods would be required to identify potential target sites; subject to heritage and regulatory approvals.

• The recommended groundwater monitoring program for the first 12 months of monitoring represents a nominal baseline period as presented on Table 7.1.

• A new procedural SOP document is recommended to be prepared in a new Sampling Measurement and Analysis Plan (SMAP) field based format, with the amendments and revisions as outlined in Section 7.

• A Drinking Water Quality Management Plan is recommended to be prepared and developed as outlined in Section 7.

• Monitoring bore M08A was reported to be blocked and not able to be sampled. It is recommended that M08A be cleaned out to remove any apparent blockage. If the blockage cannot be cleared it is possible that the casing has collapsed, and a replacement bore could be installed opportunistically when a drilling rig is next on site and prior to any on-site ore processing and associated tailings deposition.

• Monitoring bore M09 was unable to be airlift developed due to the airline becoming stuck in the bore during attempted airlifting. It is recommended that M09 be airlift development at a depth of 75% of the wet bore volume (i.e. at approx. 116mbgl) and not at the base of the bore. Airlift development of this bore could be undertaken opportunistically when a drilling rig is next on site and prior to any on-site ore processing and associated tailings deposition.

• The recommended period for the groundwater monitoring program (Table 7.1) to establish baseline groundwater conditions is 12 months. Following this period, the monitoring data is to be reviewed and assessed in detail and background levels set (as per the SOP) and trigger levels subsequently determined once sufficient background information data is collected, using statistical methods.


ABM Resources NL


TABLE OF CONTENTS

1. INTRODUCTION 1 2. OBJECTIVES AND SCOPE OF WORK 2

2.1 Scope of Work 2 2.2 Bore Locations 3

3. FIELD INVESTIGATIONS 4 3.1 Drilling Program 4 3.2 Baseline Testing 7 3.3 Water Sampling 9 3.4 Test Pumping 9

4. HYDRAULIC ANALYSIS 12 4.1 Estimated Pumping Yields 13

5. WATER CHEMISTRY 16 6. DISCUSSION 19

6.1 Water Resource Assessment Summary 19 6.2 Groundwater Dependent Ecosystem Review 20

7. GROUNDWATER MONITORING PROGRAM REVIEW 21 8. CONCLUSIONS AND RECOMMENDATIONS 25

8.1 Recommendations 25

9. REFERENCES 27 LIST OF TABLES, FIGURES AND APPENDICES

TABLES

Table 3.1 Monitoring Bore Drilling Completion Summary ....................... ................................................. 5 Table 3.2 Drilling/Airlifting Observations ................................................. ................................................. 6 Table 3.3 Standing Water Levels ............................................................. ................................................. 7 Table 3.4 EC Profiling Summary .............................................................. ................................................. 8 Table 3.5 Summary of Production Bore Details ...................................... ................................................. 9 Table 3.6 Summary of Test Pumping Results ......................................... .............................................. 10 Table 4.1 Summary of Hydraulic Analyses Results ................................ .............................................. 12 Table 4.2 Estimated Pumping Capacity – Corsair Bore ......................... .............................................. 13 Table 4.3 Estimated Pumping Capacity – Wilson’s Bore ....................... .............................................. 14 Table 4.4 Estimated Pumping Capacity – Strezza’s/Timmy’s Bore 2 .... .............................................. 15 Table 5.1 Water Quality Laboratory Analyses ........................................ .............................................. 17 Table 6.1 Recommended Pumping Rates .............................................. .............................................. 19 Table 7.1 Recommended Groundwater Monitoring Schedule - Baseline ............................................ 22

FIGURES

Figure 1 Regional Location .................................................................................................... AB0100-006 Figure 2 Bore Location Plan .................................................................................................. AB0100-001


ABM Resources NL


APPENDICES

Appendix A Glossary Appendix B Bore Completion Logs Appendix C Electrical Conductivity Profiles Appendix D1 Test Pumping Plots Appendix D2 Test Pumping Data Appendix E Analytical Laboratory Reports Appendix F Preliminary Review of Standard Operating Procedure for Groundwater Monitoring DOCUMENT REVISION HISTORY Revision Number

Status Revision Date

Revision Comments Primary Author

Reviewer Approved

A Draft 01/10/2014 Report for internal review S.Wimbridge G.Richards - A Draft 02/10/2014 Report issued for client review S.Wimbridge J.Robins G.Richards B Draft 24/10/2014 Client comments addressed S.Wimbridge J.Robins G.Richards B Final 24/10/2014 Report issued as final S.Wimbridge - G.Richards STATEMENT OF LIMITATIONS Aquifer materials and groundwater flow systems are a product of continuing natural and man- made processes and thus exhibit a variety of characteristics and properties that vary from place to place and can change with time. Geology/hydrogeology involves gathering and assimilating limited facts about these characteristics and properties in order to understand and predict the behaviour of the ground on a particular site under certain conditions. This report may contain such facts obtained by inspection, drilling, excavation, probing, sampling, testing or other means of investigation, particularly pumping and drawdown data. If so, they are directly relevant only to the groundwater system at the place where, and the time when the investigation was carried out. Any groundwater modelling predictions presented should not be regarded as matters of fact. This report and other reports referred to contain comments on works being carried out by others. Saprolite Environmental cannot and will not take responsibility for works carried out by others on site to date. We do not guarantee the performance of the project in any respect, only that our work and judgement meet the standard of care of our profession at this time. Any interpretation or recommendation given in this report shall be understood to be based on judgement and experience, not on greater knowledge of facts other than those reported. The interpretation and recommendations are therefore opinions provided for the Client's sole use in accordance with a specific brief. As such they do not necessarily address all aspects of the groundwater system on the subject site. © Saprolite Pty Ltd, 2014

This document may not be reproduced in part or whole by electronic, mechanical or chemical means, including photocopying, recording or any information storage system, without the express approval of Saprolite Pty Ltd and/or ABM Resources NL. Neither this document nor its contents may be referred to or quoted in any manner, report or other document without the express approval of Saprolite Pty Ltd and/or ABM Resources NL Additional copies and or enquiries about this document should be addressed to The Principal, Saprolite Environmental, PO Box 2234 Ellenbrook, WA, 6069 or by email to [email protected]


ABM Resources NL

SAPROLITE ENVIRONMENTAL 1

1. INTRODUCTION

ABM Resources NL (ABM) is a mineral exploration company developing several gold discoveries in the Central Desert region of the Northern Territory of Australia. ABM proposes to develop and operate the Twin Bonanza Gold Project (TBGP) in the Tanami Desert, approximately 527 km west of Tennant Creek, 750km north-west of Alice Springs, and 14 km east of the Northern Territory and Western Australia border, Figure 1.

The development of the proposed gold mine will be undertaken in a staged approach with the stage two phase of mining projected to process between 120,000 and 150,000 tonnes of ore per annum over a two year period. The stage three phase projected to process between 200,000 and 300,000 tonnes of ore per annum. The expected mine life is estimated to be approximately 4 to 5 years with further operations dependent on the results of exploration.

Ore will be transported to the Coyote processing plant for the recovery of gold. Waste rock produced by the project will report to purpose designed waste rock dumps (ABM, 2014c).

Saprolite Environmental (Saprolite) was engaged by ABM to provide hydrogeological consultation and professional services in the development of hydrogeological baseline information and water resource assessment for the Project. This follows on from a Water Management Plan (WMP) (SWC, 2013a) that was submitted by ABM to the Northern Territory, Environmental Protection Authority (NT EPA), which formed part of ABM’s submission of their Draft Environmental Impact Statement (EIS) to the Northern Territory Government (NT Govt). Subsequent to the EIS, supplementary submissions were provided to the NT Govt in response to written submissions received from the exhibition of the EIS, and further information was provided to stakeholders to support the previously lodged draft EIS.

This report specifically addresses Comment Numbers 21 and 22 in the EIS assessment by the NT Govt, and the respective responses to the comments by ABM (EIS Supplement, ABM, 2014c). This report is intended to be incorporated into ABM’s future Mining Management Plan.

This report presents the results of the Hydrogeological Works Programme (Ref Supplement to Draft EIS - Appendix C – Hydrogeological Works Scope (Saprolite, 2014a)) including drilling, installation and completion of monitor bores and one production bore, test pumping, baseline testing, hydraulic analysis, water chemistry laboratory analysis, water resource assessment, review of the standard operating procedure for groundwater monitoring (Draft EIS – Appendix H (SWC, 2013b)), and presentation of findings and recommendations.

A glossary of units and terms is presented in Appendix A.


ABM Resources NL


2. OBJECTIVES AND SCOPE OF WORK

Comment 21 – ABM Response To assess the groundwater resource, ABM proposes to undertake testing of Timmy’s (once re- established), Corsair and Wilson’s bores to determine the potential of the groundwater resource.

The proposed investigations will include:

• Establishment of a monitoring bore network to assess both water quality and extraction across the operation (including the production bores).

• Pumping tests of the established and re‐established bores (Corsair, Wilson’s and Timmy’s)

• Collection of baseline water data for the purpose of ongoing monitoring.

• Determination of the aquifer properties and associated groundwater resource.

During this process the relevant government agencies will be consulted to ensure all programs meet agency requirements. Once completed, the findings and recommendations will be incorporated into the site water account and management plan for inclusion in the Mining Management Plan. Further details of scope and extent of work is provided in EIS Supplement - Appendix C (Saprolite, 2014a).

Note: The general outline of the scope of work is provided in Section 2.1.

Comment 22 – ABM Response (in part)

It is acknowledged that the completed assessment of the sustainability and viability of water resources is required as part of the Mining Management Plan. As detailed in the response to Comment 21, the on‐site assessment is proposed to expand upon the desktop work. To assess the groundwater resource and sustainability of that resource, ABM proposes to undertake testing of Timmy’s (Strezza’s) (once re‐established), Corsair, and Wilson’s bores. This on ground work will provide a better understanding of the hydraulic conductivity and the potential storage characteristics of the aquifers that may diverge from a normal recharge and discharge flow through system.

2.1 Scope of Work

A scope of work was developed that follows on from a proposed program initially tabled in the Draft EIS – Appendix F – WMP, (SWC, 2013a).

A Hydrogeological Works Program was implemented on site from 1 July 2014 to 5 August 2014 at the Twin Bonanza Gold Project that included:

• Drilling and completion of 18 monitoring bores (nominal casing size 50mmND).

• Drilling and completion of a replacement production bore at Strezza’s Bore (as the pre-existing bore had collapsed) for longer term water supply (nominal casing size 155mmND).

• Test pumping of three (3) production bores:

o Two (2) pre-existing, previously equipped production bores (Wilson’s Bore and Corsair Bore) to assess the existing resource capacity.

o One (1) replacement production bore at Strezza’s Bore to assess the longer term water resource capacity.

• Baseline testing of 18 monitoring bores and 3 production bores, including EC profiling, standing water level (SWL) measurements and groundwater sampling for laboratory analysis in those bores that returned with water.


ABM Resources NL


2.2 Bore Locations

Preliminary bore locations proposed in the WMP were revised, following structural and geological interpretation and optimisation for test pumping data collection (ABM, 2014a, ABM, 2014b and Saprolite, 2014b). The bore locations were also refined to ensure their positions were within the mining tenement ML29822. Bores that were located outside the mining tenement required a specific Section 19 access agreement with the Central Land Council (CLC). The final monitoring bore locations are summarized as follows:

• Four shallow monitor bores (M01-M04) on the western margin of the Plant Site, intended to intercept the primary potential contaminant pathways, down gradient from the site. These were to be installed in the surficial aquifer system.

• Five deep monitor bores (M05-M09), four encompassing the Plant Site enabling monitoring of potential contaminant movement in all directions and one (M07) central to the site (adjacent to the Plant and Concentrate Residual Dam).

• Three analogue monitor bores (A01-A03A), positioned north of the site in an area outside of the potential influence of site activity. The analogue bores will enable monitoring of background concentrations throughout mine life, providing a means of distinguishing measured changes in the primary monitoring bores (M01-M04) from natural fluctuations or variability. A01 and A02A were installed in the bedrock aquifer (deep and shallow respectively) and A03A was installed upstream in an inferred palaeovalley.

• Four monitor bores (BF01-BF04) within the palaeochannel in the vicinity of Strezza’s/ Timmy’s Bore redrill. These bores will be used primarily to monitor water levels within the palaeochannel aquifer in response to abstraction from Strezza’s/Timmy’s Bore 2. The monitoring bore network (BF01-BF04) was also intended to measure water level responses during test pumping, allowing for the delineation of palaeochannel aquifer characteristics and improved certainty of pumping sustainability.

• The original 1994 constructed Strezza’s Bore had collapsed. A redrill of Strezza’s Bore was undertaken, not only to provide a high quality source of water for the project but to monitor palaeochannel water quality down gradient from the mine site.

• Two additional monitor bores (M10A and M11) were located adjacent to the pre-existing production bores, Corsair Bore and Wilson’s Bore, respectively. These bores will be used primarily to monitor water levels in response to abstraction from their respective production bores, and were also intended to measure water level responses during test pumping, allowing for the aquifer parameters to be determined.


ABM Resources NL


3. FIELD INVESTIGATIONS

3.1 Drilling Program

Drilling commenced on 2 July 2014 and was completed on 17 July 2014. A total of 18 monitoring bores were installed and one replacement production bore. All work was completed by a drilling contractor, Topdrill Pty Ltd, under the supervision of ABM Geologists. Saprolite provided ABM Geologists with onsite support and technical direction at the commencement of drilling, followed by remote support and assistance with the technical specifications as required.

A technical scope of work for the drilling program was prepared by Saprolite (Saprolite, 2014c), which was provided to the drilling contractor and ABM Geologists. The drilling scope of work included technical bore specifications, typical bore designs for the monitoring bores and production bore, a drilling bill of materials for bore consumables and nominal drilling depths for each individual bore site.

The drilling of the holes was signed off by Greg Scanlon who holds the following licences; Australian Drilling Industry Association (ADIA) #304, Australian Drilling Industry Association (ADIA) Water Licence #112 and NT Water Act Licence #115.

The bedrock and surficial monitoring bores were drilled using Reverse Circulation (RC) method with a Schramm T685 drilling rig at a final diameter of 146mm (5 ¾ inch). The palaeochannel monitoring bores were drilled using mud rotary method with a Gemex 1500 drilling rig at a final diameter of 130mm (5 1/8 inch). The replacement production bore at Strezza’s was drilled using mud rotary method at an initial diameter (for the pilot hole) of 127mm (5 inch) and then reamed to a final diameter of 267mm (10 ½ inch).

The nominal bore depths were revised during the site works as information became available. The final depths were as follows:

• Plant Site Surficial (Shallow) Bores (M01-M04) – 36m. • Plant Site Bedrock (Deep) Bores (M05-M09) – initially 90m, but were extended to 132 to

144m based on the depth at which first water or initial flows were encountered. • Palaeochannel Bores (Strezza’s/Timmy’s) – 42m • Production Monitoring Bores – to be at similar depths as their associated production bore

o M11 – 150m (at Corsair Bore) o M10A – 90m (at Wilson’s Bore)

• Analogue Bores o Bedrock (Deep) Bore (A01); as per Plant Site bedrock bores. o Surficial (Shallow) Bore (A02A); as per Plant Site surficial bores. o Palaeochannel Bore (A03A) – 42m

All monitoring holes were successfully cased with 50mm nominal diameter (ND) PN12 μPVC. Each bore annulus was gravel packed with 1.6-3.2mm graded gravel from the base of the hole to above the slotted interval. All bore annuli were sealed above the slotted interval with bentonite clay. This was undertaken to inhibit the movement of groundwater (of potential differing quality) between surficial and fractured bedrock aquifers. Bores were backfilled to approximately 1mbgl and cement grouted to surface. Each bore was completed with a steel well head and cement plinth to protect the PVC stickup and prevent direct surface water infiltration.


ABM Resources NL


Strezza’s/Timmy’s Bore 2 was cased with 155mm ND PN12 μPVC, and the bore annulus was gravel packed from 39.9 metres below ground level (mbgl) to 4mbgl. Above the gravel pack the bore annulus was sealed with bentonite and cement grouted to the ground surface. The wellhead was completed with steel surface casing, steel well cap and cement plinth.

A summary of bore completion details is presented in Table 3.1. Detailed bore completion details are presented on bore completion logs, Appendix B.

Table 3.1 Monitoring Bore Drilling Completion Summary

Bore ID

Surveyed Coordinates (MGA)

Elevation Top of Casing

(mAHD)

*Stickup (magl)

Drilled Depth (mbgl)

Cased Depth (mbgl)

Slotted Interval

mEasting mNorthing From (mbgl)

To (mbgl)

A01 517368.82 7772533.07 446.85 0.67 114 114.00 42.00 114.00 A02A 517097.41 7771709.02 439.59 0.80 36 35.50 5.50 35.50 A03A 514320.39 7772049.89 426.77 0.75 42 41.20 5.20 41.20 M01 515447.91 7768606.26 442.50 0.82 36 35.15 5.15 35.15 M02 515114.96 7767679.21 443.29 0.44 36 35.35 5.35 35.35 M03 515118.54 7766392.16 445.09 0.87 36 35.30 5.30 35.30 M04 515524.10 7765687.81 443.90 0.91 36 35.40 5.40 35.40 M05 515416.48 7768521.32 442.61 0.66 132 130.60 40.60 130.60

M06A 515929.79 7765679.49 447.42 0.92 132 130.70 40.70 130.70 M07 516266.98 7767035.79 451.73 0.84 144 143.20 41.20 143.20

M08A 516769.86 7768536.27 451.31 0.91 138 137.30 41.30 137.30 M09 516951.77 7766088.20 452.33 0.86 132 131.00 41.00 131.00

M10A 513252.59 7767166.60 432.69 0.64 89.70 89.70 41.70 89.70 M11 516537.24 7770190.36 438.59 0.16 150 150.00 42.00 150.00

Strezza’s/Timmy’s Bore 2 509508.96 7764891.92 418.26 0.62 42 39.90 6.00 39.90

BF01 509819.97 7765909.34 418.51 0.51 42 41.20 5.20 41.20 BF02 509563.73 7765117.24 418.22 0.69 42 41.30 4.30 41.30

BF03A 509507.99 7764884.44 418.07 0.51 42 41.25 5.25 41.25 BF04 509452.79 7764695.71 418.23 0.53 42 41.15 5.15 41.15

*Stickup calculated (top of casing RL (mAHD) minus ground RL (mAHD)

During the drilling program groundwater occurrences and approximate yields were recorded in those bores drilled by RC method, although many of the bores were drilled dry (particularly the shallow surficial bores), Table 3.2. The approximate intersection and quantity of groundwater encountered could not be delineated in those bores drilled by mud rotary method.

Drilling of the plant site monitoring bores and analogue bores A01 and A02A intersected three major lithological units, siltstone, sandstone and intercalated siltstone and sandstone. The units have varying degrees of oxidisation, but were typically weathered to depth at around 70mbgl. The upper part of the sedimentary sequence is heavily weathered and overlain by a thin (<2m), extremely weathered, iron rich alluvium layer.

Minor groundwater was encountered within fractured sequences of sandstone and siltstone during drilling of the plant site and analogue (A01 and A02A) monitoring bores. Groundwater was typically intersected at depths greater than 90mbgl or not at all. Monitoring bores A01, M05 and M11 were somewhat of exceptions where more significant groundwater was encountered possibly indicating more considerable fracturing and connection at depth.


ABM Resources NL


Drilling of Strezza’s/Timmy’s Bore 2 intersected primarily calcrete, which has developed over porous and well sorted aeolian sand. There was a loss of circulation between 10 and 37mbgl, this was assumed to be due to the karstic nature of the calcrete, as there was little to no weight against the drill bit during drilling. Calcrete deposits are said to preferentially develop towards the centre of the main palaeochannel systems.

Drilling of the palaeochannel monitoring bores (A03, BF01, BF02, BF03A and BF04) intersected alluvial clay (pelite) at depth, overlain by intercalated sandstone, siltstone and pelite units. Chemical precipitate deposits, calcrete and silcrete were identified within upper parts of the profiles, with the most significant occurrence of calcrete at BF03A, which is adjacent to Strezza’s/Timmy’s Bore 2. Stratigraphically above the calcrete deposits was a thin (2m) stratum of extremely weathered iron rich alluvium, which typically contained silcrete at its base.

It is interpreted that a significant aquifer system exists within the Strezza’s/Timmy’s palaeochannel area and is bounded at its base by less hydraulically conductive pelitic sediments at approximately 23mbgl.

Following bore completion, the bores were developed by airlifting using HDPE airline and the drilling rig air compressor. The surficial/shallow monitoring bores (M01-M04) and analogue monitoring bores (A02A and A03A) were noted as dry and not bore developed. Monitoring bore M09 was recorded as having seepage during the drilling, but was unable to be developed as the HDPE airline became stuck in the bore during the process. Of the bores that were successfully developed by airlifting the majority were airlifted until clear of sediment/debris or at least until significant reductions in turbidity were observed. Indicative airlift yields were measured using a 90º v-notch weir for the palaeovalley bores, and timed bucket-fill method for bores drilled using RC method. Indicative airlift yields and bore development durations are presented in Table 3.2.

Table 3.2 Drilling/Airlifting Observations

Bore ID First Flow (mbgl) (whilst drilling)

Description of flow Bore Development Airlift

Duration (mins) Bore Development Indicative

Airlift Yields (L/s)# A01 114 Low 240 2.89

A02A No Flow NA Dry NA A03A Not distinguished* NA Dry NA M01 No Flow NA Dry NA M02 No Flow NA Dry NA M03 No Flow NA Dry NA M04 No Flow NA Dry NA M05 126 Low-mod 240 2.33

M06A No Flow NA 240 0.03 M07 No Flow NA 30^ 0.05

M08A 114 Low 240 0.15 M09 114 Seepage Dry NA

M10A NR NA 180 0.04 M11 90 Low 360 0.25

Strezza’s/Timmy’s Bore 2 Not distinguished* NA 720 8.40

BF01 Not distinguished* NA 90 0.22 BF02 Not distinguished* NA 210 0.21

BF03A Not distinguished* NA 180 1.30 BF04 Not distinguished* NA 180 0.21

*Groundwater intersection was not distinguished due to mud rotary drilling method. # recorded near the end of bore development. ^Bore dry after 30 minutes of airlifting.


ABM Resources NL


Bore development airlift yields varied considerably, particularly at those bores targeting the fractured bedrock aquifer. The majority of the bedrock aquifer bores were dry or low yielding (0.03L/s to 0.15L/s), the exceptions being A01 and M05 which encountered significant groundwater (2.89L/s and 2.33L/s, respectively) and M11 which encountered moderate groundwater (0.25L/s).

Moderate to high yields were observed during airlifting of the palaeochannel monitoring bores, with the exception of A03A which is distant to the Strezza’s/Timmy’s bore network and was dry. Yields ranged from 0.21L/s at BF02 to 1.3L/s at BF03A (which is located just 7m from Strezza’s/Timmy’s Bore 2).

Strezza’s/Timmy’s Bore 2 was high yielding; with indicative airlift yields increasing with bore development duration. For example, an initial yield of 5.6L/s was recorded during after the first hour of airlifting, which increased to, and stabilised at 8.4L/s over the 11th and 12th hours of development.

3.2 Baseline Testing

Following completion of the monitoring bores, water levels and borehole conditions were allowed a minimum of 10 days to stabilise before standing water levels were measured and pre-purge EC profiling was undertaken.

Standing Water Levels (SWL) in metres below ground level (mbgl) and reduced metres Australian Height Datum (mAHD) are presented in Table 3.3. As anticipated, standing water levels were depressed at the bedrock aquifer monitoring sites and near surface in the palaeochannel monitoring bores. SWL depths in the bedrock bores ranged from 49.19mbgl at M10A to 70.17mbgl at M09, whilst SWL depths at the Strezza’s/Timmy’s Borefield ranged from 2.88mbgl to 3.38mbgl. A03A was somewhat of an exception, which was drilled to 42mbgl targeting palaeochannel sediments, but was drilled dry.

Table 3.3 Standing Water Levels

Bore ID SWL Measurement

Date SWL# (mbgl)

SWL (mAHD)

A01 04/08/2014 67.87 378.31 A02A NA Dry Dry A03A NA Dry Dry M01 NA Dry Dry M02 NA Dry Dry M03 NA Dry Dry M04 NA Dry Dry M05 30/07/2014 60.01 381.94

M06A 30/07/2014 67.93 378.57 M07 30/07/2014 59.10 391.79

M08A 30/07/2014 67.25 383.15 M09 30/07/2014 70.17 381.30

M10A 30/07/2014 49.19 383.86 M11 22/07/2014 54.61 383.82

Strezza’s/Timmy’s Bore 2 04/08/2014 3.38 414.26

BF01 31/07/2014 3.33 414.67 BF02 31/07/2014 2.88 414.65

BF03A 04/08/2014 3.11 414.45 BF04 31/07/2014 2.96 414.74

#SWL’s derived from EC profiling


ABM Resources NL


Electrical Conductivity (EC) Profiling

EC profiling was conducted using a Solinst TLC meter and the data and individual charts are included in Appendix C. EC profiles are also presented on bore logs for comparison with lithology, Appendix B. A summary of EC Profiling results is presented in Table 3.4.

The charts illustrate relatively consistent salinity with depth at the majority of the Plant Site monitoring bores. Minor increases in salinity with depth were recorded at M05, M06A and M08A with 20%, 36% and 25% difference between minimum and maximum EC values, respectively. More considerable increases in salinity were recorded with depth at the Strezza’s/Timmy’s monitoring bores, with 311%, 75% and 80% variation between minimum and maximum values recorded at BF01, BF02 and BF04, respectively.

Electrical conductivity recorded at the Plant Site monitoring bores and the analogue monitoring bore indicated brackish to saline water quality (but typically saline) with average EC values ranging from 3,134µs/cm @25°C at M08A to 28,087µs/cm @25°C at M06A.

Similarly, EC recorded at Wilson’s Bore and M10A indicated saline water quality, with average profiled EC values of 14,871µs/cm @25°C and 16,585µs/cm @25°C, respectively. Less saline water quality was indicated at Corsair Bore and M11, with average profiled EC of 1,788µs/cm @25°C and 3,725µs/cm @25°C at these sites respectively.

The highest quality groundwater was identified in the palaeochannel bores, with EC profiling at BF02, BF03A, BF04 and Strezza’s/Timmy’s Bore 2 indicating fresh water quality with average EC values ranging from 503µs/cm @25°C to 899µs/cm @25°C. Marginal water quality was identified at the more distant BF01, with an average profiled EC value of 1,840µs/cm @25°C.

Table 3.4 EC Profiling Summary

Bore ID SWL EC Minimum EC Value*

Maximum EC Value*

Average EC Value*

A01 10,000 9,971 11,600 11,015 M05 11,300 12,000 14,400 13,223 M06A 22,400 22,800 31,100 27.920 M07 4,764 4,427 6,139 4,741 M08A 2,973 2,816 3,518 3,134 M09 10,000 8,584 10,100 9,652 M10A# 12,600 12,900 19,200 16,585 Wilson’s Bore 3,749 12,700 17,700 14,871 M11 3,459 3,401 4,132 3,725 Corsair Bore 1,890 1,561 2,122 1,788 Strezza’s/Timmy’s Bore 2# 475 424 1,197 503 BF01 1,130 1,038 4,275 1,840 BF02 525 472 828 570 BF3A# 551 488 1,631 899 BF04 745 677 1,219 848 *Minimum, maximum and average EC values exclude SWL and basal EC measurements. #EC Profiling conducted after test pumping program. EC Values: µS/cm compensated at 25°C Post purge EC profiling was undertaken at several sites following test pumping programs at respective production bores. This data (where available) has been presented on EC profiles for comparison with “pre-purge” EC profiling data. There was no significant variation between datasets. Pre-test EC profiling is likely to be representative of post purge conditions due to the relatively short period of time between bore development (during the drilling program) and the baseline testing program.


ABM Resources NL


3.3 Water Sampling

The specific purging of bores prior to sampling was not undertaken. Instead the process of bore development after the bore completion provided sufficient purging to allow groundwater from the substrata to enter the bore column. This, combined with at least 10 days stabilisation period after bore development to allow the bores to ‘de-gas’ from the process of airlifting, was considered appropriate.

Water samples were collected during the baseline testing/test pumping program using 1L disposable bailers in those bores that had water in the bore column. Samples were successfully collected at all sites with the exception of:

• Monitoring bores: A02A, A03A, M01, M02, M03 and M04, which were all were dry at the time of sampling; and

• Monitoring Bore: M08A, which appeared to be blocked and could not be bailed.

The samples collected were largely free of suspended sediment, with the exception of M09.

Monitoring bore M09 contained significant grey suspended material and drilling foam. The bore was not developed following bore construction as the HDPE airline became stuck within the bore at the commencement of airlifting (as noted in Section 3.1). The drilling contractor also used drilling foam (Super Foam) to aid in the removal of the stuck airline. Following removal of the airline from the bore the drilling contractor did not reattempt bore development, as such purging was not undertaken prior to sampling. The drilling foam is biodegradable and components will breakdown over time; i.e. 50 to 90% after 2-3 weeks.

The analytical results of the water sampling are presented in Section 5.

3.4 Test Pumping

Test pumping was undertaken by Saprolite on the two pre-existing production bores and a newly completed production bore from 22 July 2014 to 2 August 2014. Tests included step drawdown, constant rate and recovery testing. A summary of bore completion details is presented in Table 3.5.

Table 3.5 Summary of Production Bore Details

Bore ID Cased Depth

(m)

Casing ID

(mm)

^Water Depth (mbgl)

Previously Reported Salinity (as TDS mg/L)

Salinity July/August 2014

(as TDS mg/L)

Submersible Test Pump

Test Pump Depth

(m)

Corsair Bore 150 150 54.86 2,140* 1,420 Grundfos SP8A-37 100

Wilson’s Bore 83 150 45.54 7,330* 7,840 Grundfos SP17-9 75

Strezza’s/ Timmy’s Bore 2 39.9 155 3.03 421# 318 Grundfos SP17-9 37

^Recorded July 2014, prior to commencement of test pumping *SWC WMP, 2013a #Strezza’s/ Bore (original)


ABM Resources NL


Test pumping of the three bores was conducted using either of two different 4-inch electro-submersible pumps, both fitted with cooling shrouds. The test pumping equipment was supplied by Western Irrigation Pty Ltd (on hire to Topdrill). Topdrill provided the genset and a pump supervisor, whom carried out the pump installation, maintenance and removal during the test pumping works.

Each pumping test required the submersible pumps to overcome differing amounts of hydraulic head; therefore different maximum pumping rates were achieved during preliminary pump tests. At Corsair Bore a maximum flow rate of 2.3L/s was achieved with a static water level (~55mbgl). At Wilson’s Bore a maximum flow rate of 2.9L/s was achieved with a static water level (~45mbgl). Whilst at Strezza’s/Timmy’s Bore 2 a maximum flow rate of 5.8L/s was achieved with a static water level (~4mbgl).

Step drawdown testing was conducted to determine the most suitable pumping rates for respective 48 hour constant rate tests. Each test consisted of four 100 (or 60) minute steps, starting from an initially low pumping rate, through two steps of progressively higher constant rates, ending with the maximum pumping rate (no back pressure on pump). The rates employed for each step test are summarized in Table 3.6.

Following step testing for Corsair Bore, a constant rate of 1.5L/s was selected. Although a maximum pumping rate of 2.3L/s was achieved during the preliminary test, a rate above 1.5L/s was anticipated to be unsustainable over 48 hours given increasing hydraulic head with drawdown and the limitations of the pump.

Following a review of step test data, a constant rate of 1.5L/s was selected for Wilson’s Bore. It was anticipated that a pumping rate above 1.5L/s would result in drawdown to the pump before the conclusion of 48 hours. During the constant rate test an impermeable boundary was identified, resulting in acceleration of drawdown at approximately 70mbgl, as such 1.5L/s could not be maintained and the constant rate was brought back to 1.2L/s and 1L/s progressively, with each “step” identifying an impermeable boundary.

At Strezza’s/Timmy’s Bore 2 a rate of 5L/s was selected, slightly less than the maximum pumping rate of 5.8L achieved during the preliminary test.

A summary of step test and constant rate test results is presented in Table 3.6.

Table 3.6 Summary of Test Pumping Results

Tested Bore

Dates Tested

Step Test Rates (L/s) [kL/d]

Drawdown in Pump Bore (m)

Constant Rate (L/s) [kL/d]

Final drawdown in Pump Bore (m)

Final Drawdown in Monitoring Bores (m)

Corsair Bore

22/07/14 to

25/07/14

1, 1.5, 1.75, 1.8 [86, 130, 151, 156]

60min steps

7.17 1.5 [130] 7.07 M11 (r=10m): 1.26

Wilson’s Bore

26/07/14 to

29/07/14

1, 1.5, 1.6 [86, 130, 138] 100min steps

23.78 1.1 [97] 24.03

M10A (r=10m): 9.73

Strezza’s/ Timmy’s Bore 2

31/07/14 to

03/08/14

2, 3, 4, 5.9 [173, 259, 346, 510]

60min steps

1.23 5.0 [432] 1.105

BF03A (r=7.3m): 0.385 BF01 (r=1064m): 0.020 BF02 (r=232m): 0.135 BF04 (r=204m): 0.110


ABM Resources NL


Recovery measurements were taken on cessation of the constant rate pumping test for 10 hours (Corsair) to the next morning (Wilson’s and Strezza’s/Timmy’s Bore 2). The percentage of recovery (i.e. recovery/total drawdown) in the pumped bores was: • 89% (residual drawdown 0.76m after 12hrs) in Corsair Bore • 84% (residual drawdown 3.7m after 24hrs) in Wilson’s Bore • 87% (residual drawdown 0.14m after 24hrs) in Strezza’s/Timmy’s Bore 2

The discharged water from test pumping bores was pumped via 50 to 100m lay flat, connected to wellhead infrastructure and discharged into an excavated containment pond, resulting in zero discharge to the environment.


ABM Resources NL


4. HYDRAULIC ANALYSIS

The test pumping results were analysed to calculate the hydraulic properties of the aquifer using Jacob, Theis and Cooper & Jacob analytical methods.

Test pumping data was reduced to derive drawdowns, with subsequent drawdowns plotted against time on a semi-logarithmic axis. The drawdown behaviour of the observed bores was analysed to confirm multiple boundary conditions with increasing slope of the drawdown curve, or conversely recharge/leakage boundaries. The behaviour of the hydraulic data in this manner when tested is typical of fractured rock aquifers, or palaeochannel aquifers with bounded sides. A summary of hydraulic analyses is presented in Table 4.1.

A memorandum was prepared that presented the preliminary results of the test pumping (Saprolite 2014c). These results have been confirmed and revised, based on improved lithological interpretation that was not available at the time of writing for the memorandum. The results contained in this report, supersedes those contained in the memorandum.

Table 4.1 Summary of Hydraulic Analysis Results

Test Observed Bores Distance from Pumped Bore (m)

Aquifer Transmissivity (T) (m2/d)

Aquifer Storage Coefficient (S)

Analytical Method

Pumped Bore: Corsair Bore CRT Corsair Bore 0.075 Late time: 8-10 NA Jacob CRT M11 10 Late time: 18 8.4 x 10-2 Jacob

RT Corsair Bore 0.075 Early time: 12 Late time: 18 NA Theis

RT M11 10 Late time: 25 NA Theis Average = 16 Pumped Bore: Wilson’s Bore CRT Wilson’s Bore 0.075 1.2-3.2 NA Jacob CRT M10A 10 3.6 2.5 x 10-3 Jacob

RT Wilson’s Bore 0.075 Early time: 2.2 Late time: 1.4 NA Theis

RT M10A 10 Late time: 1.4 NA Theis Average = 2.2

Pumped Bore: Strezza’s/Timmy’s Bore 2

CRT Strezza’s/ Timmy’s Bore 2 0.078

(line of best fit 2000-2880mins): 360 Late time: 166

NA Jacob

CRT BF03A 7.3 (line of best fit 400-2880mins): 416 4.9 x 10-1 Jacob

CRT All Bores N/A 630 6.7 x 10-3 Cooper and Jacob

RT Strezza’s/ Timmy’s Bore 2 0.078 Late time: 188 NA Theis

RT BF03A 7.3 Late time: 205 NA Theis Average = 330 CRT: Constant Rate Test RT: Recovery Test


ABM Resources NL


Corsair Bore The calculated transmissivities from all the analyses ranged from 8 to 25m2/d, and averages 16m2/d. The calculated hydraulic conductivity (K) value was 6.4 x 10-1m/d based on the average transmissivity and an interpreted aquifer thickness of 25m; i.e. 90 to 115mbgl. Typical hydraulic conductivity (K) values for consolidated and fractured/friable sandstone rocks range from 10-3 to 1m/d (Driscoll, 1986). Therefore, the results obtained from analytical methods fall within the expected range for this type of aquifer.

Wilson’s Bore The calculated transmissivities from all the analyses ranged from 1.2 to 3.6m2/d, and averages 2.2m2/d. The calculated hydraulic conductivity (K) value was 1.8 x 10-1m/d based on the average transmissivity and an interpreted aquifer thickness of 12m; i.e. 58 to 70mbgl. Typical hydraulic conductivity (K) values for friable sandstone rocks range from 10-3 to 1m/d (Driscoll, 1986). Therefore, the results obtained from analytical methods fall within the expected range for this type of aquifer.

Strezza’s/Timmy’s Bore 2 The calculated transmissivities from all the analyses ranged from 166 to 630m2/d, and averages 330m2/d. The calculated hydraulic conductivity (K) value was 17m/d based on the average transmissivity and an interpreted aquifer thickness of 19m; i.e. 4 to 23mbgl. Typical hydraulic conductivity (K) values for unconsolidated palaeochannel basal sands and karstic limestone range from 10-1 to 103m/d (Driscoll, 1986). Therefore, the results obtained from analytical methods fall within the expected range for this type of aquifer.

4.1 Estimated Pumping Yields

The observed drawdowns during the constant rate tests were extrapolated using the derivation of the Well Equation, such that drawdown is plotted against the square root of time on a linear axis. Long term pumping yields using a rearranged Well Equation can be estimated given specific available drawdowns in a given timeframe. A series of options for pump depth settings is provided for each bore, Tables 4.2, 4.3, and 4.4.

Table 4.2 Estimated Pumping Capacity – Corsair Bore

Duration of continuous pumping

Pump Depth: 100m SWL: 54.9m 75% level: 88.7m Available Drawdown (to 75%): 33m Aquifer Base: 115m



L/s kL/d L/s kL/d L/s kL/d 1 year 1.77 153 2.58 223 3.38 292 2 years 1.33 115 1.93 167 2.53 219 3 years 1.11 96 1.62 140 2.12 183 4 years 0.98 84 1.42 123 1.87 161 5 years 0.88 76 1.29 111 1.69 146

75% level is: 75% of the water column between SWL and pump The pumping capacity of Corsair Bore and the ability for the bore to yield these rates continuously over time will be dependent on a suitable 4-inch electro-submersible pump that has high head capability. The above calculations do not take into account depletion from aquifer storage.


ABM Resources NL


At a pump depth option of 140m, it is likely the water level would decline to the base of the interpreted aquifer and may result in declining yields at whatever rate is chosen for the corresponding duration.

A conservative approach would be to ensure the aquifer base is not reached, with the objective of keeping pumping water levels above the 75% aquifer thickness level; i.e. 108mbgl. This could then be achieved with the pump depth option of 120m at an appropriate pumping yield to suit the corresponding pumping duration.

Table 4.3 Estimated Pumping Capacity – Wilson’s Bore


Pump Depth: 75m SWL: 45.0m 75% level: 67.5m Available Drawdown (to 75%): 22.5m Aquifer Base: 70m

Pump Depth: 80m SWL: 45.0m 78% level: 72m Available Drawdown (to 78%): 27m Aquifer Base 70m

L/s kL/d L/s kL/d 1 week 0.84 72 1.01 87 1 month 0.57 49 0.68 59 3 months 0.39 34 0.47 40 6 months 0.30 26 0.36 31 1 year 0.22 19 0.27 23 2 years 0.17 14 0.20 17 3 years 0.14 12 0.17 14 4 years 0.12 10 0.15 13 5 years 0.11 9 0.13 11 75/78% level is: 75-78% of the water column between SWL and pump

Wilson’s Bore should only be used intermittently and not on a continuous basis; for that reason if the bore is operated continuously at a rate of 1L/s, the bore would reach critical levels within 1 week, and would start to cavitate. It is recommended that this bore not be pumped at rates greater than 1L/s at any given time due to the significant drawdown that it induces.

If at a pump setting of 80m, the pump (with a cooling shroud) would be 4m off the bottom of the bore, and the 78% critical level would be 8m above the pump. It is recommended that pumping water levels do not fall below critical level (i.e. either 72m (78%) for a pump depth of 80m, or 67m (75%) for a pump depth of 75m; both scenarios result in a critical level that provides 8m available drawdown above the pump).

In relation to the interpreted aquifer interval and thickness, the 75% aquifer level is at 67mbgl and yields would decline as pumping water levels fall below this depth, as was observed during the constant rate test pumping. This depth also corresponds to the same critical level of 67m for the 75m pump depth option, as described above.


ABM Resources NL


Table 4.4 Estimated Pumping Capacity – Strezza’s/Timmy’s Bore 2


Pump Depth: 20m SWL: 3.03m 75% level: 15m Available Drawdown (to 75%): 12m Aquifer Base: 23m

Pump Depth: 37m SWL: 3.03m 75% level: 28m Available Drawdown (to 75%): 25m Aquifer Base: 23m

L/s kL/d L/s kL/d 2 years 12.5 1,077 26.0 2,940 3 years 10.5 911 22.0 1,898 5 years 8.5 732 17.7 1,525 7 years 7.3 631 15.2 1,316 10 years 6.2 538 13.0 1,121 15 years 5.2 447 10.8 932 75% level is: 75% of the water column between SWL and pump.

At a pump depth option of 37m, it is likely the water level would decline to the base of the interpreted aquifer and may result in declining yields at whatever rate is chosen for the corresponding duration.

A conservative approach would be to ensure the water levels do not significantly drawdown. The bore should be operated such that the water levels relative to critical pump level stay well above 15m. This would also correspond with keeping water levels above the 75% aquifer depth level at 18m. This could then be achieved with the pump depth option of 20m at an appropriate pumping yield to suit the corresponding pumping duration.

The above calculations for Strezza’s/Timmy’s Bore 2 do not take into account the following:

- Depletion of storage within the localised area of the pumping bore - Contribution (or lack there-of) of recharge (direct and indirect) and leakage - The potential effect of Groundwater Dependent Ecosystems (GDE) in lowering the

groundwater table, given the presence of Eucalyptus trees within the palaeovalley area; although dominant vegetation species is spinifex.

- The effects of multiple boundaries, and change in transmissivity as water levels decline

- The construction of the bore is limited to only accommodating 4-inch electro-submersible pumps, and yields greater than 7-10L/s are likely not possible.

- Available storage or volume of groundwater within the aquifer system per unit km, which equates to:

o defined cross sectional area of palaeochannel (i.e. width and thickness) o application of 20% Specific Yield for palaeochannels o commandable storage is 60% of available storage

Taking into account volumetric storage, assuming a nominal palaeochannel width of 200m, assumed thickness of 19m, results in a conservative estimation of potential yield for Strezza’s/Timmy’s Bore 2 – being 5L/s (432kL/d) for 5 years.

If Strezza’s/Timmy’s Bore 2 is intended to be equipped it is recommended that that a suitable 4-inch electro-submersible pump (with cooling shroud) be installed at a depth of 20m, and that has the capacity to be pumped at rates between 5L/s (nominal) and 7L/s (peak).


ABM Resources NL


5. WATER CHEMISTRY

Water samples were collected at 14 sites and submitted to ALS Laboratories (NATA Certified Laboratory) for analysis. The analytical laboratory reports are presented, in their entirety, as Appendix E, and summarised in Table 5.1. ANZECC Livestock Watering Criteria (NWQMS 2000) guideline values have been included in the table for comparison purposes only.

Water quality laboratory analysis indicates saline water quality at the majority of sites located around the mining area, with the exceptions of Corsair Bore and its adjacent monitoring bore M11, where analysis indicated groundwater of brackish quality. The laboratory analysis for the water sampled at the Strezza’s/Timmy’s bore network indicated fresh to marginal water quality.

Water samples were slightly alkaline at all sites (except at M09) with pH values ranging from 7.49 to 7.96. The laboratory results indicate relatively high alkalinity (buffering capacity) as such groundwater may have the capacity to resist changes in pH that would make it more acidic.

Groundwater sampled at M09 was slightly acidic with a pH value of 6.02. During sampling of the bore, the smell of hydrogen sulphide was recorded. The presence of hydrogen sulphide often correlates with bores that have lower pH. The groundwater sample from M09 was found to contain very high concentrations of Total Organic Carbon (TOC) and Dissolved Organic Carbon (DOC). Correspondingly a high value for Chemical Oxygen Demand (COD) was determined, indicating significant organic pollutants.

Laboratory results were compared against ANZECC 2000 Livestock Watering Criteria (NWQMS, 2000) guideline values. Of the comparisons made sulphate appeared to be the most elevated, with sulphate concentrations at seven sites exceeding the ANZECC guideline value of 1,000mg/L. Sulphate concentrations within the Strezza’s/Timmy’s bore network were far lower, ranging from 16 to 133mg/L. Fluoride concentrations are also slightly elevated at several of the Plant Site monitoring bores.

Cyanide species and dissolved metals were found to be below criteria guideline values and for the most part, below Limits of Reporting (LOR).

Results for Total Petroleum Hydrocarbons (TPH) were typically near, or below LOR, with the exception of results recorded at M09 and Corsair Bore. At Corsair Bore the C15-C28 and C29-C36 hydrocarbon fractions were significantly elevated. It is recommended that further hydrocarbon analysis is undertaken at Corsair Bore, coincident with 6-monthly laboratory analysis to determine if this was an isolated event.

The laboratory was unable to complete the entire TPH analysis for samples collected at M09, as additives resulted in the formation of a foamy precipitate, and an accurate result could not be obtained. It is recommended that M09 is adequately purged before the next quarterly sampling event as hydrocarbons (and other contaminants) may be resultant from the drilling process and not naturally occurring.


ABM Resources NL


Table 5.1 Water Quality Laboratory Analyses

Uni

ts

A01

M05

M06

A

M07

M09

Stre

zza’

s/

Tim

my’

s Bor

e 2

BF0

1

BF0

2

BF0

3A

BF0

4

Wils

on’s

Bor

e

M01

0A

Cor

sair

Bor

e

M11

ANZECC Livestock Watering Criteria (NWQMS 2000)

General Parameters pH No units 7.73 7.94 7.51 7.49 6.02 7.74 7.67 7.65 7.88 7.87 7.96 7.49 7.6 7.71 6.5-8.5 EC (S/cm at 25°C) µS/cm at 25°C 13,100 13,900 29,400 7,640 12,600 477 1,330 579 516 792 12,000 15,100 2,300 3,150 - Total Dissolved Solids (TDS) mg/l 8,550 8,800 20,400 4,880 8,470 318 872 424 382 562 7,840 10,500 1,420 1,970 3,000 Total Alkalinity (CaCO3) mg/l 364 299 261 289 219 190 280 249 229 269 598 477 318 300 - Carbonate Alkalinity as CaCO3 mg/l <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 Bicarbonate Alkalinity as CaCO3 mg/l 364 299 261 289 219 190 280 249 229 269 598 477 318 300 Ionic Balance Ratio 0.72 3.97 1.16 3.22 3.36 5.76 3.21 1.67 4.19 4.69 1.16 1.18 0.52 0.56 - Major Ions and Ligands Calcium (Ca2+) mg/l 254 357 737 474 474 25 79 44 31 41 272 430 109 135 1000 Potassium (K+) mg/l 159 135 234 83 130 34 42 28 36 35 199 218 38 47 - Magnesium (Mg2+) mg/l 407 480 1,160 337 460 19 44 31 22 31 363 516 90 116 - Sodium (Na+) mg/l 2,110 2,270 4,930 711 2,030 41 124 24 42 74 2,020 2,390 240 352 - Chloride (Cl-) mg/l 3,360 3,630 8,590 1,820 3,400 24 234 32 25 64 2,920 3,910 499 691 - Fluoride (F-) mg/l 1.9 5.8 7.3 4.4 2.8 1.8 1 1.1 1.7 2.5 1.1 0.7 0.6 0.6 2 Sulphur Species Sulphate (SO4

2-) mg/l 1,820 1,870 4,660 1,060 2,060 19 133 20 16 36 1,870 2,380 196 369 1000 Nutrients Nitrate (NO3- as N) mg/l 2.5 5.83 0.04 27 0.41 2.13 0.01 2.71 2.7 6.47 6.12 2.51 0.02 5.18 400 Ammonia (as N) mg/l 0.09 0.09 0.04 0.59 172 0.03 0.13 0.06 0.09 0.12 0.06 3.14 0.06 0.08 - Reactive Phosphorus as P mg/l <0.01 <0.01 0.02 0.1 66.1 0.64 <0.01 0.21 0.07 0.14 0.03 0.04 0.01 0.02 - Phosphorus (Total) mg/l <0.05 <0.05 0.36 <0.20 77.5 1.44 0.03 0.21 0.12 0.17 <0.05 0.07 0.05 0.08 - Total Kjeldahl Nitrogen (TKN as N) mg/l 0.7 2.1 1.4 9.4 225 0.8 1.1 1.1 0.8 1.9 1 8.8 0.4 0.8 - Chemical Oxygen Demand (COD) mg/l <40 122 110 56 15,000 <10 43 22 <10 <10 <40 85 30 14 - Carbon Total Organic Carbon (TOC) mg/l 4 8 5 15 4,670 4 18 8 3 4 6 30 10 3 - Dissolved Organic Carbon (DOC) mg/l 4 8 5 15 4,570 3 14 8 3 4 4 8 9 3 -


ABM Resources NL


Table 5.1 Water Quality Laboratory Analyses (Continued)

Uni

ts

A01

M05

M06

A

M07

M09

Stre

zza’

s/

Tim

my’

s B

ore

2

BF0

1

BF0

2

BF0

3A

BF0

4

Wils

on’s

Bor

e

M01

0A

Cor

sair

Bor

e

M11

ANZECC Livestock Watering Criteria

(NWQMS 2000)

Cyanide Free Cyanide (CN-) mg/L <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 Weak Acid Dissociable (WAD) Cyanide (CN-) mg/L <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004

Total Cyanide (CN-) mg/L <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 Metals - Dissolved Aluminium (Al) mg/L 0.02 0.02 <0.02 <0.01 0.36 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.01 <0.01 <0.01 5 Antimony (Sb) mg/L <0.001 <0.001 <0.002 <0.001 0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.002 <0.001 - Arsenic (As) mg/L <0.001 0.004 <0.002 0.092 0.243 0.003 0.001 0.003 0.002 0.003 0.002 <0.001 0.084 0.013 0.5 Barium (Ba) mg/L 0.034 0.028 0.047 0.057 0.055 0.137 0.23 0.222 0.24 0.29 0.017 0.068 0.041 0.031 - Beryllium (Be) mg/L <0.001 <0.001 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 - Boron (B) mg/L 1.3 1.44 0.24 0.7 0.97 0.18 0.2 0.1 0.18 0.26 1.31 1.16 0.61 0.65 5 Cadmium (Cd) mg/L <0.0001 <0.0001 <0.0002 <0.0001 0.001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.01 Chromium (Cr) mg/L <0.001 <0.001 <0.002 <0.001 0.003 <0.001 <0.001 <0.001 <0.001 <0.001 0.011 0.003 <0.001 0.002 - Cobalt (Co) mg/L 0.003 0.001 0.008 0.037 0.037 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.004 <0.001 0.001 1 Copper (Cu) mg/L 0.014 0.009 0.015 0.005 0.03 0.001 0.001 0.001 0.001 0.001 0.006 0.012 <0.001 0.004 0.5 Lead (Pb) mg/L <0.001 <0.001 <0.002 <0.001 0.009 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.1 Nickel (Ni) mg/L 0.005 0.003 0.007 0.008 0.062 <0.001 0.002 <0.001 0.002 <0.001 0.002 0.02 <0.001 0.004 1 Manganese (Mn) mg/L 0.077 0.106 1.32 0.877 1.93 0.001 0.186 0.003 0.002 <0.001 <0.001 0.126 0.042 0.123 - Selenium (Se) mg/L <0.01 <0.01 <0.02 0.01 0.02 <0.01 <0.01 <0.01 <0.01 <0.01 0.02 0.01 <0.01 <0.01 0.02 Uranium (U) mg/L 0.069 0.058 0.08 0.18 0.007 0.001 0.002 0.002 0.001 0.001 0.085 0.032 0.019 0.022 Vanadium (V) mg/L <0.01 <0.01 <0.02 <0.01 0.02 0.02 <0.01 0.02 0.02 0.02 <0.01 <0.01 <0.01 <0.01 Zinc (Zn) mg/L 0.045 0.045 0.166 1.33 2.54 0.205 0.024 0.028 0.029 0.017 0.021 0.024 0.014 0.084 20 Mercury (Hg) mg/L <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.002 Total Petroleum Hydrocarbons (TPH) C6-C9 Fraction µg/L <20 <20 <20 <20 2,000 <20 290 <20 <20 <20 <20 <20 <20 <20 C10-C14 Fraction µg/L <50 100 60 180 NR <50 100 70 <50 <50 <50 <50 70 <50 C15- C28 Fraction µg/L <100 <100 210 360 NR <100 <100 170 <100 <100 <100 <100 1,040 <100 C29-C36 Fraction µg/L <50 60 110 390 NR <50 <50 130 <50 <50 <50 <50 1,410 <50


ABM Resources NL


6. DISCUSSION

6.1 Water Resource Assessment Summary

The Twin Bonanza Gold Project would have a water supply demand that will peak at 11L/s (950kL/d) when the project reaches its full production phase of 300,000 tonnes per annum and if onsite processing was to occur. However, as the excavated ore is to be processed through the Coyote processing plant within Western Australia, the water supply requirement is anticipated to be met by the existing production bores during the mining phases of the project, with a projected water demand of up to 0.8L/s (69kL/d).

Further to the hydraulic analysis of the test pumping results, the following presents a summary of pumping recommendations to satisfy the Project’s short to medium term water resource requirements, Table 6.1.

Table 6.1 Recommended Pumping Rates

Bore ID Pump Depth

(m)

Pump Yield# Comments L/s kL/d

Corsair Bore 120 1.3 111 High head pump required, could be pumped at higher pumping rates (2.5L/s) for peak demand/short periods

Wilson’s Bore 75 1.0 86 Intermittent pumping with frequent rest periods Strezza’s/Timmy’s Bore 2

20 5.0 432 Would have the capacity to be pumped at higher pumping rates (7L/s) for peak demand/short periods Careful monitoring would be required to review bore performance and assess potential impacts on vegetation health

# 5-year continuous pumping yields

The recommended pumping rates are conservative estimates based on the information available. It is considered the results obtained are Measured in terms of confidence level of water resource sustainability; definitions are summarised as follows:

o Measured – based on adequate data to provide basis for conclusive abstraction, including drilling results, test pumping, some initial base case modelling might have been undertaken.

o Probable – based on drilling results, test pumping, some initial base case modelling might have been undertaken, but improved certainty of sustainability; this includes a nominal 12-month period of monitoring water levels under and abstraction conditions, and reviewing bore/aquifer performance.

o Proven – all of the above plus calibrated numerical modelling, cost effective usage, and legal access including statutory allocation approval, and increasing status of commercial viability.






ABM Resources NL



6.2 Groundwater Dependent Ecosystem Review

A desktop assessment of the potential Groundwater Dependent Ecosystems (GDE) at the Twin Bonanza Gold Project was undertaken in March 2014, (Low Ecological Services (LES), 2014). This work followed on from comments made by NT EPA relating to the draft EIS (ABM, 2013). The NT EPA requested that a local assessment of the extent of Groundwater Dependent Ecosystems (GDEs) be completed, on the basis that within the palaeochannel areas, groundwater has been recorded at less than 10 metre below ground level.

Saprolite has reviewed this desktop assessment, and concurs with the conclusions made, as follows:

“It is unlikely that Groundwater Dependent Ecosystems are present within the palaeochannels west of the Twin Bonanza project area based on previous studies conducted in the Tanami region and the domination of spinifex in the palaeochannels. The presence of facultative phreatophytic species indicates that in extending periods of drier than average years, trees may utilise groundwater. It is not foreseen that the planned water extractions will negatively impact ecosystems but it is advised that a monitoring program be put in place to detect any change in vegetation condition.”(LES, 2014)

It should be noted that, whilst spinifex is dominant within the palaeochannel area, Saprolite personnel observed the presence of Eucalyptus trees within the Strezza’s/Timmy’s Borefield area during the test pumping program of July 2014.

Saprolite also supports the recommendations made in the desktop assessment (LES, 2014), as follows (in italics):

• Utilise multiple extraction bores positioned at least 1km apart to spread the cone of depression across the water table (refer to Section 6.1 of this report);

• Conduct monitoring of groundwater levels and groundwater quality (refer to Section 7 of this report); and,

• Conduct Tree Health surveys (refer to Section 6.1 of this report).


ABM Resources NL


7. GROUNDWATER MONITORING PROGRAM REVIEW

A Standard Operating Procedure (SOP) for Groundwater Monitoring was prepared by Soil Water Consultants (SWC, 2013b) for ABM. The SOP formed part of the Water Management Plan (SWC, 2013a), and was included in ABM’s submission of their draft EIS to the NT Govt.

The SOP was prepared as a generic type document with nominal bore conditions, with the preface that it is a “living document” that should be updated as and when required when new information and data becomes available.

A memorandum was prepared (Saprolite, 2014d) that presented an initial and preliminary review of the SOP based on the preliminary results and findings from the drilling and bore completion, and subsequent baseline testing and sampling. This review was to examine if any changes may be required to the SOP to reflect actual bore conditions and new information. The memorandum is presented in its entirety as Appendix F. A summary is presented as follows:

The major changes between the recommended groundwater monitoring program and that presented in the SOP relates primarily to monitoring frequency and parameters.

Frequency - change from monthly to:

- bi-monthly sampling (i.e. every two months) for plant site monitoring bores; - quarterly sampling for analogue monitoring bores; - quarterly water levels for water supply monitoring bores; - bi-monthly field water chemistry for production bores; and - 6-monthly sampling for production bores.

Parameters - reduction in field parameters; only pH and EC included - tailoring suites of analytes for specific areas - EC profiling of monitoring bores within water supply areas - reduction in cyanide species to WAD CN - elimination of microbiological sampling from production and monitoring bores, and

instead targeting microbiological testing at end user locations, post water treatment.

The objectives for monitoring are as follows: • early detection of contaminants entering the groundwater from mining and mineral processing

activities; • potential effects on aquifer and groundwater dependent ecosystems from groundwater

abstraction for water supply purposes; and • ensuring treated water supply is fit for human consumption.

Risk Assessment There is potential for the deterioration of groundwater quality from contaminants, spills, or seepage from waste storage facilities, or from over exploitation from water supply bores. Information and data collected from the recent hydrogeological investigations has provided sufficient information to assess the risk associated from the operations; a summary of the information is provided in Appendix F.


ABM Resources NL


Using the results of the risk assessment in the context of the monitoring objectives, the recommended groundwater monitoring program for the baseline period of 12 months is presented on Table 7.1.

Table 7.1 Recommended Groundwater Monitoring Schedule – Baseline

Area Monitoring Locations Parameters Frequency

Water Supply Bores

Production Bores

Corsair Bore, Wilson’s Bore, and Strezza’s/Timmy’s Bore 2

(if a production bore is not equipped it should be monitored as a monitoring bore)

Abstraction Monthly (end of month) Water Levels (if possible) Monthly (end of month) Field Parameters Bi-monthly (every 2 months) Field Parameters, Laboratory Parameters, Major Ions, Metals, (Hydrocarbons Corsair Bore only)

6-monthly

Monitoring Bores (associated with production bores) M10a, M11 and BF03A

Water Levels Quarterly (or Monthly#) EC Profiling Quarterly

Borefield Monitoring Bores BF01, BF02, and BF04

Water Levels Quarterly EC Profiling Quarterly

Plant Site Monitoring Bores (Shallow/Surficial) M01, M02, M03, and M04 Monitoring Bores (Deep) M05, M06A, M07, M08A, M09

Water Levels, Field Parameters, Laboratory Parameters, Major Ions, Metals/Metalloids, Nutrients, Cyanide, Hydrocarbons

Bi-monthly

Analogue Bores

Monitoring Bores (Shallow/Surficial) A02A and A03A Monitor Bores (Deep) A01


Quarterly

Treatment Plant

Post Treatment Plant Camp Kitchen Tap and Processing Office Tap

Microbiological Monthly

Abstraction: Meter readings, pump status, duration of pump status. Field Parameters: Electrical conductivity (EC) and pH. Laboratory Parameters: Electrical conductivity (EC), pH, total dissolved solids (TDS), total alkalinity. Major Ions Ca, Na, Mg, K, SO4, Cl, HCO3, CO3, F Metals/Metalloids: Al, Sb, As, B, Cd, Cr, Cu, Pb, Hg, Ni, Mn, Se, U, V, and Zn, Nutrients: Nitrate as N (NO3), Ammonia as N (NH33), Total Nitrogen (TN), Total Kjeldahl Nitrogen (TKN as N),

Reactive Phosphorus, Total Phosphorus, Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Dissolved Organic Carbon (DOC)

Cyanide: Weak Acid Dissociable Cyanide (WAD CN) Hydrocarbons: Total Petroleum Hydrocarbons (TPH (C6-C36)) and Total Recoverable Hydrocarbons (TRH (C6-C40)) Microbiological: E. coli EC Profiling: Routine EC Profiling – No purging, as all have been airlifted clean and initial EC profiling has been

undertaken.

# Monitoring Bores associated with production bores: Monthly if water levels cannot be obtained from adjacent production bore

Potable Water Monitoring

The intent of routine potable water monitoring (i.e. microbiological parameters) is to ensure that water supplied to end consumers is fit for human consumption. The raw water supplied to Wilson’s Camp from production bores is treated by Reverse Osmosis then distributed as potable water through the camp water distribution system. It is thus more effective to sample and test the treated water to ensure this supplied end user water is free of microbiological contaminants and safe to consume, rather than from the original source (pre-treatment).


ABM Resources NL


Sampling and testing microbiological parameters from original source water (production bores) only need occur under certain circumstances; for example to investigate sources of contamination if results from camp testing return positive. However, there are a series of protocols to follow before this were to occur; such as retesting same end points, testing different end points, and testing pre-treatment. The circumstances when this would be particularly relevant is when any maintenance or work is being carried out on the water supply or water treatment system that could lead to contaminants entering the system.

In addition, microbiological sampling procedures are significantly different to that of other routine sampling, such as monitoring bores. Sterile conditions and protocols, and short holding times must be observed.

It is recommended that a Drinking Water Quality Management Plan be prepared, established and implemented to guide ABM in the correct procedure of collecting microbiological samples, what steps to take if positive results are returned, and reporting (internally and externally), Appendix F.

Bore Purging

Bore purging prior to sampling is considered necessary to ensure representative water samples are collected and that groundwater from the formation is introduced into the bore.

It is recommended that rather than stringently removing 4 to 6 bore volumes (as stated in the SOP and NT Advisory Note (DME, 2009)), an alternative approach be taken that could be considered more representative. That is, bores can be purged until pH, EC and Temperature measurements of the abstracted water stabilises to within 10% variation. This can be achieved with less than 2 bore volumes removed (based on practical experience). It is recommended at least the first 1 to 2 bore volumes from the bore column is removed to remove the stagnant water, and to allow sufficient natural groundwater enter the bore.

Alternatively, a low flow pumping/sampling system should be considered, providing the pump can be placed to the depth of inferred aquifer zone; i.e. 110 to 120mbgl.

A suitable purging/sampling pump should be considered that has the capability of the above criteria. For example, a Bennet Pump (high flow) or a Micropurge® (low flow) pumping system. Each system has advantages and disadvantages; comparisons, and individual brochures for each pump type are included in Appendix F.

Additional Monitoring Equipment

Specific field equipment will be required for the monitoring and sampling of groundwater monitoring points, including but not limited to:

Type of Equipment Model/Brand Example Water level meter (100m) Solinst 101 Multi-parameter water quality meter (pH, EC/TDS, Temp) (EC up to 199Ms/cm)

CyberScan PC300

Down hole EC Meter (150m) Solinst TLC Sampling equipment (to 120m) Micropurge® Low-Flow sampling system Field filtering equipment Nalgene filter flask, vacuum pump and filter papers or

obtained through the analytical laboratory

A complete list of equipment that would be required for the ongoing monitoring and sampling is recommended to be provided in a revised SOP, or new sampling and monitoring manual/document referred to as Sampling Measurement and Analysis Plan (SMAP).


ABM Resources NL


Revision to SOP for Groundwater Monitoring

The SOP will need to be revised, amended and tailored to reflect the site specific conditions, including the actual bores that were drilled, the initial baseline testing, and the hydrogeological conditions that were encountered. The changes to the SOP include, but not limited to:

• Addition of actual bore schedule and location plan

• New monitoring schedule with revised parameters and frequencies (as per Table 7.1 above)

• Bore purging considerations

• Additional and different sampling equipment that will be required

• Minor amendments and improvements throughout

• Removal of bottle washing sample bottles; as all sample bottles will be pre-treated

The new procedural document should be prepared that suits a field based practical program and set-out in a manner that field operators can easily follow. This can be in the format of a Sampling Measurement and Analysis Plan (SMAP). This also includes field based checklists, field data sheets, and chain of custodies for respective groundwater monitoring events that are either: monthly, bi-monthly or quarterly. The SMAP is a ground up (field based) document rather than a system downward driven document.

Recommendations

• A new procedural SOP document is recommended to be prepared in a new SMAP field based format, with the amendments and revisions as above.

• A Drinking Water Quality Management Plan is recommended to be prepared and developed as outlined above.

• Monitoring bore M08A was reported to be blocked (as mentioned in Section 3) and not able to be sampled. It is recommended that M08A be cleaned out to remove any apparent blockage. If the blockage cannot be cleared it is possible that the casing has collapsed, and a replacement bore could be installed opportunistically when a drilling rig is next on site and prior to any on-site ore processing and associated tailings deposition.


• The recommended period for the above monitoring program to establish baseline groundwater conditions is 12 months. Following this period, the monitoring data is to be reviewed and assessed in detail and background levels set (as per the SOP) and trigger levels subsequently determined once sufficient background information data is collected, using statistical methods.


ABM Resources NL


8. CONCLUSIONS AND RECOMMENDATIONS

Hydrogeological works were undertaken in order to address the comments made by stakeholders in ABM’s draft EIS (Comments 21 and 22), that culminates in this report.

These hydrogeological works included:

• The drilling and installation of 18 monitoring bores;

• The drilling and installation of a replacement production bore at Strezza’s;

• The collection of baseline water chemistry from 11 monitoring bores and 3 production bores where groundwater was present within the bores; and

• The test pumping and hydraulic analysis of the pre-existing production bores, Corsair Bore and Wilson’s Bore and the new replacement bore Strezza’s/Timmy’s Bore 2.

The above works provided sufficient information to provide:

d) an initial set of baseline results comprising physical and chemical parameters;

e) a water resource assessment and recommended pumping yields to meet the project water requirements in the short to medium term; and

f) a review of the groundwater monitoring program with recommendations.

8.1 Recommendations

• Recommended pumping depths and pumping rates are provided in Table 6.1, which are conservative estimates for a 5-year continuous period, as follows

o Corsair Bore: 120m @ 1.3L/s o Wilson’s Bore: 75m @ 1L/s (intermittent use only) o Strezza’s/Timmy’s Bore 2: 20m @ 5L/s







ABM Resources NL


• The recommended groundwater monitoring program for the baseline period of 12 months is presented on Table 7.1

• A new procedural SOP document is recommended to be prepared in a new Sampling Measurement and Analysis Plan (SMAP) field based format, with the amendments and revisions as outlined in Section 7.

• A Drinking Water Quality Management Plan is recommended to be prepared and developed as outlined in Section 7.

• Monitoring bore M08A was reported to be blocked (as mentioned in Section 3) and not able to be sampled. It is recommended that M08A be cleaned out to remove any apparent blockage. If the blockage cannot be cleared it is possible that the casing has collapsed, and a replacement bore could be installed opportunistically when a drilling rig is next on site and prior to any on-site ore processing and associated tailings deposition.


• The recommended period for the groundwater monitoring program (Table 7.1) to establish baseline groundwater conditions is 12 months. Following this period, the monitoring data is to be reviewed and assessed in detail and background levels set (as per the SOP) and trigger levels subsequently determined once sufficient background information data is collected, using statistical methods.


ABM Resources NL


9. REFERENCES

ABM Resources NL, 2013, Draft Environmental Impact Statement Twin Bonanza 1 Gold Mine, Rev 0, Dec 2013.

ABM Resources NL, 2014a, Structural and geological interpretation and assessment of Groundwater Monitoring Bore locations, Internal Memorandum by R. Richards, 31 Jan 2014 (included in ABM’s Supplemental EIS – Appendix E).

ABM Resources NL, 2014b, Addendum - Structural and geological interpretation and assessment of Groundwater Monitoring Bore locations, Internal Memorandum by P. Hill after R. Richards, 26 Mar 2014 (included in ABM’s Supplemental EIS – Appendix E).

ABM Resources NL, 2014c, Supplementary Environmental Impact Statement Twin Bonanza 1 Gold Mine, Rev 1, April 2014.

Australia New Zealand Environment and Conservation Council & Agriculture and Resource Management Council of Australia and New Zealand, 2000, National Water Quality Management Strategy, Australian and New Zealand Guidelines for Fresh and Marine Water Quality, October 2000.

Bell, J.G., Kilgour, P.L., English, P.M., Woodgate, M.F., Lewis, S. J., Wischussen J.D.H (compilers) 2012. WASANT Palaeovalley Map - Distribution of Palaeovalleys in Arid and Semi-arid WA-SA-NT (first edition), scale 1:4 500 000). Geoscience Australia Thematic Map (Geocat no. 73980).

Department of Mines & Energy, 2009, Methodology for the Sampling of Ground Waters, Advisory Note (Ref AA7-024), NT Govt., Mar 2009.

Domahidy, G. 1990. Hydrogeology of the Granites-Tanami mining region: Explanatory notes for 1:250,000 scale map. Northern Territory Power and Water Authority, Report 74/1990, 23p.

Driscoll, F.G., 1986, Groundwater and Wells (2nd ed.), Johnson Filtration Systems, Inc., St. Paul, Minnesota.

Earth Systems Consulting Pty Ltd, 2013, Preliminary Groundwater Resource Assessment For The Old Pirate Gold Project, Tanami Desert, Northern Territory, Rev1, Report for ABM Resources NL, June 2013, (included in ABM’s draft EIS – Appendix J).

EcOz Environmental Services, Flora and Fauna Report Dry Season, May 2013, Twin Bonanza Gold Project, Ver 1.0, Report for ABM Resources NL, August 2013, (included in ABM’s draft EIS – Appendix C).

English, P., Lewis, S., Bell, J., Wischusen, J., Woodgate, M., Bastrakov, E., Macphail, M., Kilgour.P., 2012, Water for Australia’s arid zone – identifying and assessing Australia’s palaeochannel groundwater resources: summary report, Waterlines report, National Water Commission, Canberra.

Environmental Protection Authority (NT), 2014, Assessment Report 74, Twin Bonanza Gold Mine ABM Resources NL, Northern Territory Government, May, 2014.

Freeze, R.A and Cherry, J.A., 1979, Groundwater, Prentice-Hall, Inc. Englewood Cliffs, New Jersey.

Kruseman, G.P. and N.A. de Ridder, 1994, Analysis and Evaluation of Pumping Test Data (2nd ed.), Publication 47, Intern. Inst. for Land Reclamation and Improvement, Wageningen, The Netherlands.

Low Ecological Services Pty Ltd, 2014, Desktop Assessment of the Potential Presence of Groundwater Dependent Ecosystems at the Twin Bonanza Project, Tanami Desert, Report for ABM Resources NL, March 2014.

Magee, J.W., 2009. Palaeochannel Groundwater Resources in Arid and Semi-Arid Australia – A Literature Review. Geoscience Australia Record 2009/03. 224 pp.

NHMRC, NRMMC, (2011), The Australian Drinking Water Guidelines – 6, National Water Quality Management Strategy;

NHMRC (2005), Drinking Water Guidelines: Community Water Planner – A tool for small communities to develop drinking water management plans www.nhmrc.gov.au/publications/synopses/eh39.htm

National Uniform Drillers Licensing Committee (NUDLC), 2012, Minimum Construction Requirements for Water Bores in Australia (3rd Ed.).

NT Department of Health, 2012, Environmental Health Guidelines for Private Water Supplies.

NT Department of Health, 2013, Environmental Health Fact Sheet No 414 – Private Water Supplies in Accommodation Businesses.

Saprolite Environmental, 2014a, Twin Bonanza Gold Project – Hydrogeological Works Scope, correspondence to ABM Resources NL, 31 March 2014, (included in ABM’s Supplemental EIS – Appendix C).

Saprolite Environmental, 2014b, ABM – TBGP - Monitor Bore Locations – Brief Assessment, email correspondence to ABM Resources NL, 16 April 2014.

Saprolite Environmental, 2014c, ABM Resources NL, Drilling Scope of Work for Twin Bonanza Gold Project, ver A,4 April 2014, prepared for ABM Resources NL.

Saprolite Environmental, 2014d, Twin Bonanza Gold Project – Test Pumping Production Bores – Preliminary Results, Memorandum to ABM Resources NL, 11 August 2014.

Saprolite Environmental, 2014e, Twin Bonanza Gold Project – Preliminary Review – Standard Operating Procedure for Groundwater Monitoring, Memorandum to ABM Resources NL, 27 August 2014.

SoilWater Consultants, 2013a, Water Management Plan (WMP) for the Twin Bonanza Gold Project – RevC2, Report for ABM Resources NL, December 2013, (included in ABM’s draft EIS – Appendix F).

SoilWater Consultants, 2013b, Standard Operating Procedure for Groundwater Monitoring for the Twin Bonanza Gold Project – RevC1, Report for ABM Resources NL, December 2013, (included in ABM’s draft EIS – Appendix H).

Twin Bonanza Gold Project Hydrogeological Baseline and Bore Completion Report

ABM Resources NL


FIGURES

Lake MacKay

Lake Wills

Lake White

Lake Dennis

Tanami Road

Tanami R

oad

HallsCreek

G

reat

North

ern

Highway

Stu

rt

Cre

ek

LakeGregory

JiwaranpaOutstation

Carranya

TanamiDowns

Mangkala

Picininny BoreOutstation

Sturt Creek

Wungu FloraValley

Birrindudu Lul-tju

Parnta

Pinja

Mirridi

Puyurru

VaughanSprings

Wolfe Creek Meteorite

Crater

Wirrimanu (Balgo)

Mulan

Mindibungu(Billiluna)

Lajamanu

Gordon Downs

SupplejackDowns

Lake MacKayAboriginal Land Trust

YiningarraAboriginal Land Trust

Central DesertAboriginal Land Trust

MangkururrpaAboriginal Land Trust

Mala

AboriginalLand Trust

PurtaAboriginalLand Trust

YingualyalyaAboriginalLand Trust

Hooker CreekAboriginal Land

Trust

Mt. Frederick (No.2)Aboriginal Land Trust

Mount. FrederickAboriginal Land Trust

MountDooreen

BirrindudaWallamunga

InverwayBundaKi

Riv

e

WaveHill

Supplejack

ML29822

TWIN BONANZAGOLD PROJECT

Central AustraliaAboriginal ReserveMaruwa

AboriginalReserve

KearneyAboriginal Reserve

Wolfe CreekMeteorite Crater

National Park

Gordon DownsAboriginal

Reserve

Client: Project:

Figure No.

Plan No.A4

Date:

Checked: G.Richards

Approved: G.Richards

Author: G.R. / S.C.

ABM RESOURCES NLTWIN BONANZAGOLD PROJECT Scale: 1:2 000 000

400000mE

400000mE

500000mE

500000mE

600000mE

7600000mN 7600000mN

7700000mN 7700000mN

7800000mN 7800000mN

7900000mN

To Alice Springs

600000mE

Western Australia Northern Territory

1

AB0100-006REGIONAL LOCATION

Grid based on Transverse Mercator Projection

GDA 1994 MGA Zone 52

N

0

KilometresMAP GRID OF AUSTRALIA

100SCALE 1 : 2 000 000

Alice Springs

Katherine

Darwin

WA

SA

QLD

ABMResources

October 2014

Northern Territory

Legend

NT Pastoral Leases

Data Sourced from Northern Territory GovernmentDepartment of Lands, Planning and the Environment.

NT Aboriginal Land Trusts

WA Aboriginal Reserves

Location

EL 28322

ML29822

EL 28322

Section 19 Area

Section 19 Area

Section 19 A

rea

Plant

Pipeline

TWINBONANZA

Old Pirate

Golden Hind

Airstrip

Pip

elin

e

A3

Figure No.

Plan No.

Date:

Drawn: S.Coleman

Checked: G.Richards

Approved: G.Richards

Client:

Project:

Scale: 1:50 000

Author: G.Richards

507500mE

510000mE

510000mE

512500mE

512500mE

515000mE

515000mE

517500mE

517500mE

520000mE

520000mE

7762500mN 7762500mN

7765000mN 7765000mN

7767500mN 7767500mN

7770000mN 7770000mN

7772500mN 7772500mN

7775000mN 7775000mN

7777500mN 7777500mN

7780000mN 7780000mN

ABM RESOURCES NL

TWIN BONANZAGOLD PROJECT

A01

A02A

A03A

BF01

BF02

BF03A BF04

M01

M02

M03

M04

M05

M06A

M07

M08A

M09

M10A

M11

Wilson’s Bore

Corsair Bore

Strezza’s/Timmy’s Bore 2

Legend

AB0100-001 2

Grid based on Transverse Mercator Projection

GDA 1994 MGA Zone 52

N

SCALE 1 : 50 0000

KilometresMAP GRID OF AUSTRALIA

2.5

Production Bore

Analogue Monitor Bore

Plant Site Monitor Bore

Borefield and Production Monitor Bore

BORE LOCATION PLAN

October 2014


ABM Resources NL


APPENDIX A

GLOSSARY - Units & Terms


ABM Resources NL


GLOSSARY Units

km Kilometre

ha Hectare = 10,000m2

kL Kilolitre = 1m3

ML Megalitre = 1,000m3

GL Gigalitre = 1,000,000m3

MTPA Million Tonnes Per Annum

mg/L Milligrams per litre

Terms

Abstraction Pumping groundwater from an aquifer

Alluvium (alluvial) Detrital material transported by streams and rivers

Aquifer A geological formation or group of formations able to receive, store and transmit significant quantities of water

Basin A discrete Phanerozoic age (less than 545Ma) geological structure containing sedimentary and sometimes volcanic rocks and groundwater resources with porous, permeable formations

Bedrock General term for solid rock underlying unconsolidated materials

Bore Drilled small diameter well, usually lined with steel or plastic casing for the purpose of obtaining or monitoring groundwater

Brackish Water containing between 1,500 and 3,000 mg/L total dissolved solids (TDS), tasting slightly salty

Cavitation A phenomena of cavity formation, or formation and collapse, especially in regard to pumps, when the absolute pressure within the water reaches the vapour pressure causing the formation of vapour pockets

Colluvium (colluvial) Detrital material transported by gravity down slopes

Confined aquifer An aquifer constrained between upper and lower layers of low permeability

Dewatering Removal of free-draining water resulting in lowering the watertable and reduction of groundwater in storage

Drawdown The distance between the static water level and the surface of the cone of depression

Formation A lithological distinctive stratum or sequence of rocks deposited during a finite period and constituting a mappable unit

Fractured rock aquifer Crystalline rocks that yield economic supplies of groundwater from fractures or weathering profiles

Fresh Water containing less than 500mg/L TDS, and generally suitable for drinking

Groundwater Water occurring below the land surface in the saturated zone in pores and fissures, generally in motion and part of the hydrologic cycle

Hydraulic conductivity A measure of the rate at which water moves through a porous medium

Hydrogeology Science concerned with the study of groundwater occurrence and movement and its relation to the geological environment


ABM Resources NL


Inferred A geological boundary or resource estimate that is based on experience, comparisons to geological relationships, and has not necessarily been ground truthed or verified from field investigations or drilling.

Karst A type of topography produced by solution and collapse of limestone formations

Leakage Vertical (and or horizontal) flow of groundwater from one aquifer to another, generally through a less permeable layer

Marginal quality Water containing between 500 and 1,500mg/L TDS, in the upper range of acceptability for drinking

Outcrop Portion of land surface occupied by a particular geological formation

Permeability A measure of the rate at which fluid or gas can move through a porous medium

Potentiometric surface The level to which water from a confined aquifer will rise

Recharge The water that infiltrates the watertable originating from rainfall and streamflow

Renewable resources The amount of groundwater that accrues each year from recharge

Saline Water containing more than 3,000mg/L TDS

Salinity A measure of the concentration of total dissolved solids (TDS)

Specific capacity The rate of discharge of a water well per unit of drawdown, commonly expressed in m3/day/m. It varies with duration of discharge

Specific yield The volume of water that an unconfined aquifer releases from storage per unit surface area of the aquifer per unit decline in the watertable

Storage coefficient The volume of water that a confined aquifer releases from storage per unit surface area of aquifer per unit decline in the potentiometric surface

Sustainable yield The amount of groundwater that may be abstracted from an aquifer in perpetuity without adverse impact

Transmissivity The rate at which water is transmitted through a unit width of an aquifer under a unit hydraulic gradient; in the International System, transmissivity is given in m3/day through a vertical section of an aquifer one meter wide and extending the full saturated height of an aquifer under a hydraulic gradient of 1.

Throughflow The process or amount of groundwater flowing through an aquifer

Unconfined aquifer An aquifer overlying a relatively impermeable layer which is saturated from the watertable (at atmospheric pressure) downwards and generally with free vertical infiltration of recharge from the surface

Weathering Process whereby surface rock materials are broken down and chemically altered by exposure and biological agents

Well A hole or dug excavation designed to facilitate the abstraction of groundwater (term also applied to drilled bores)

Wellfield (borefield) A group of wells or bores used together to provide a groundwater supply

Yield The amount of water that can practically be pumped from a well/bore or aquifer


ABM Resources NL


APPENDIX B

Bore Completion Logs

Bore No:Client: Operation:

Commenced:Completed:

Logged By:Drilled:

Static Water Level: Date:

Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy

SERVICESSAPROLITEENVIRONMENTAL

52B Mornington Parkway

ELLENBROOK, WA 6069

Phone: (08) 6296 7760Fax: (08) 6296 7762www.saprolite.com.au

Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:

Bit Record:Hole Purpose:

Lithological Description(uS/cm)

ConductivityElectrical

Well No: Sheet 1 of 2File Ref:

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

67.87mbgl 4/08/2014

146mm (5, 3/4")

4/07/2014

4/07/2014Top Drill

P.A./ S.W. Monitoring 446.85mAHD (Top Casing)7772533.07mN

517368.82mEAnalogue

ABM Resources NL Twin Bonanza Gold Project

A01

AirReverse Circulation (RC)

A01AB0101-01-01

Stickup 0.67magl

Cement Seal 0mbglto 1mbgl

Cement Plinth 0mbglto 0.2magl

Backfill 1mbgl to38mbgl

Bentonite Plug38mbgl to 39mbgl

Blank Casing from0.67magl to 42mbgl,50mm PN12 µPVC

SWL: 67.87mbgl

Bore Development,Indicative Airlift Yield:2.89L/s

ALLUVIUM: Red, heavily weathered, poorly sorted, Fe-rich, transportedmaterial

SANDSTONE: Brown, heavily weathered, medium grained sandstone

SILTSTONE: Brown, moderate weathering, siltstone and minor fine tomedium grained sandstone

SANDSTONE: Brown, moderate weathering, medium to coarse grainedsandstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone andminor siltstone

SILTSTONE: Brown, moderate weathering, siltstone and minor fine tomedium grained sandstone

SANDSTONE: Brown, moderate weathering, medium to very coarse grainedsandstone


SILTSTONE: Brown, moderate weathering, siltstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone

SILTSTONE: Brown/red, heavily weathered, siltstone




SANDSTONE: Brown, moderate weathering, coarse grained sandstone

SANDSTONE: Brown, moderate weathering, coarse grained sandstone andminor siltstone


SILTSTONE: Brown, moderate weathering, siltstone and minor mediumgrained sandstone

SANDSTONE: Brown, moderate weathering, medium to fine grainedsandstone

SANDSTONE: Brown, moderate weathering, coarse to very coarse grainedsandstone

SILTSTONE: Brown, moderate weathering, siltstone and minor fine grainedsandstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone andminor siltstone

0 10000

20000

0 10000

20000

0 10000

20000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

67.87mbgl 4/08/2014

146mm (5, 3/4")

4/07/2014

4/07/2014Top Drill


517368.82mEAnalogue


A01


A01AB0101-01-01

Slotted Interval from42mbgl to 114mbgl,50mm PN12 µPVC -1mm transversemachine slotted

1.6 to 3.2mm GravelPack, 39mbgl to114mbgl

NB: Limit of ECProfiling at 100m

PVC End Cap

Total drilled depth114m



SILTSTONE: Pale purple, slightly weathered, siltstone

SILTSTONE: Pale purple, slightly weathered, siltstone and minor fine grainedsandstone

SANDSTONE: Pale purple, slightly weathered, fine grained sandstone

SILTSTONE: Grey, slightly weathered, siltstone with minor fine grainedsandstone

SANDSTONE: Grey/white, slightly weathered, medium grained sandstone

SANDSTONE: Brown, slightly weathered, medium to coarse grainedsandstone

SANDSTONE: Brown, slightly weathered, fine to medium grained sandstone

SANDSTONE: Brown, slightly weathered, fine grained sandstone and minorsiltstone

SILTSTONE: Brown, slightly weathered, siltstone and minor fine grainedsandstone


SANDSTONE: Brown, slightly weathered, fine to medium grained sandstone,trace quartz


SILTSTONE: Brown, slightly weathered, siltstone and minor fine grainedsandstone

SANDSTONE: Brown, slightly weathered, coarse grained sandstone

0 10000

20000

0 10000

20000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

Dry NA

146mm (5, 3/4")

3/07/2014

3/07/2014Top Drill


517097.41mEAnalogue


A02A


A02AAB0101-01-01

Stickup 0.80magl



Backfill 1mbgl to2.5mbgl

Bentonite Plug2.5mbgl to 3.5mbgl

Blank Casing from0.80magl to 5.5mbgl,50mm PN12 µPVC

Slotted Interval from5.5mbgl to 35.5mbgl,50mm PN12 µPVC -1mm transversemachine slotted

1.6 to 3.2mm GravelPack, 3.5mbgl to35.5mbgl

PVC End Cap


SWL: Dry

Indicative Airlift Yield:Dry

ALLUVIUM: Red, coarse, heavily weathered, Fe-rich transported, material

SANDSTONE: Brown, heavily weathered fine grained sandstone


SILTSTONE: Brown/cream, moderate weathering, siltstone and minor finegrained sandstone

SANDSTONE: Brown/cream, moderate weathering, fine grained sandstoneand minor siltstone

SANDSTONE: Cream, moderate weathering, fine grained sandstone

SANDSTONE: Brown/cream, moderate weathering, fine grained sandstonewith minor siltstone

SANDSTONE: Cream, moderate weathering, medium grained sandstone withtrace siltstone

SANDSTONE: Cream, moderate weathering, medium grained sandstone


SILTSTONE: Cream, moderate weathering, siltstone

SANDSTONE: Cream, moderate weathering, medium grained sandstone andminor siltstone


SANDSTONE: Cream, moderate weathering, coarse grained sandstone

SANDSTONE: Brown/cream, moderate weathering, fine grained sandstoneand minor siltstone

SILTSTONE: Cream, moderate weathering, siltstone



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

Dry NA

130mm (5, 1/8")

17/07/2014

17/07/2014Top Drill

K.E./ S.W. Monitoring 426.77mAHD (Top Casing)7772049.89mN

514320.39mEAnalogue


A03A

Polymer MudMud Rotary - Normal Circ.

A03AAB0101-01-01

Stickup 0.75magl



Backfill 1mbgl to3mbglBentonite Plug 3mbglto 4mbglBlank Casing from0.75magl to 5.2mbgl,50mm PN12 µPVC



Fallback 41.2mbgl to42mbgl


SWL: Dry

Indicative Airlift Yield:Dry

PVC End Cap

ALLUVIUM: Red, heavily weathered, coarse, poorly sorted, Fe-rich,transported materials

SANDSTONE: Brown/red, heavily weathered, fine to medium grainedsandstone

SILCRETE: White/transparent, hard, conchoidal fracture, 100% silcrete

CALCRETE: White, moderate weathering, calcrete, minor sandstone andlateritic material, trace quartz

SANDSTONE: Red/grey, moderate weathering, medium grained sandstone

SANDSTONE: Red, heavily weathered, fine grained sandstone

SANDSTONE: Red, heavily weathered, fine grained sandstone and minorsilcrete

SANDSTONE: Red/grey, moderate weathering, fine to medium grainedsandstone

SILTSTONE: Grey/red, moderate weathering, siltstone and minor fine grainedsandstone

SILTSTONE: Grey/red, heavily weathered, siltstone and minor fine grainedsandstone

SILTSTONE: Grey/white, heavily weathered, siltstone and minor lateriticmaterial

SILTSTONE: Grey/white, moderate weathering, siltstone and minor lateriticmaterial

SILTSTONE: Red, moderate weathering, siltstone, trace sandstone andquartz



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

Dry NA

146mm (5, 3/4")

10/07/2014

10/07/2014Top Drill


515447.91mEProcessing Area/ Plant Site


M01


M01AB0101-01-01

Stickup 0.82magl




Bentonite Plug 3mbglto 4mbgl

Blank Casing from0.82magl to5.15mbgl, 50mmPN12 µPVC

Slotted Interval from5.15mbgl to35.15mbgl, 50mmPN12 µPVC - 1mmtransverse machineslotted

1.6 to 3.2mm GravelPack, 4mbgl to35.15mbgl

Fallback 35.15mbglto 36mbgl


SWL: Dry

Indicative Airlift Yield:Drilled Dry

PVC End Cap

ALLUVIUM: Red, poorly sorted, heavily weathered, Fe-rich, transportedmaterials

SANDSTONE: Red/ grey, heavily weathered, medium grained sandstone

SANDSTONE: Red/ grey, moderate weathering, fine to medium grainedsandstone with trace to minor siltstone

SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone

SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone with trace to minor siltstone

SILTSTONE: Brown/pink, heavily weathered, siltstone

SILTSTONE: Brown, moderate weathering, siltstone with minor fine grainedsandstone

SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone with trace siltstone


SILTSTONE: Brown/pink, moderate weathering, siltstone


SANDSTONE: Brown, moderate weathering, fine grained sandstone withminor siltstone

SANDSTONE: Cream/brown, moderate weathering, medium grainedsandstone



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

Dry NA

146mm (5, 3/4")

10/07/2014

10/07/2014Top Drill




M02


M02AB0101-01-01

Stickup 0.44magl










SWL: Dry


PVC End Cap


SANDSTONE: Red, heavily weathered, fine grained sandstone

SANDSTONE: Brown/red, moderate weathering, fine grained sandstone

SILTSTONE: Brown/grey, moderate weathering, siltstone

SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone and trace to minor siltstone



SANDSTONE: Brown, moderate weathering, medium grained sandstone andminor quartz

SILTSTONE: Brown, moderate weathering, siltstone and minor quartz

QUARTZ: Primarily quartz vein, with minor siltstone


SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone and minor siltstone


SANDSTONE: Brown, moderate weathering, fine to medium grainedsandstone and minor siltstone


SANDSTONE: Brown, moderate weathering, coarse grained sandstone andtrace to minor quartz



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

Dry NA

146mm (5, 3/4")

10/07/2014

10/07/2014Top Drill

P.H./ S.W. Monitoring 445.09mAHD (Top Casing)7766392.16mN



M03


M03AB0101-01-01

Stickup 0.87magl










SWL: Dry


PVC End Cap


SANDSTONE: Red, heavily weathered, medium grained sandstone

SANDSTONE: Red/brown, moderate weathering, fine to medium grainedsandstone with trace to minor siltstone


SANDSTONE: Brown, moderate weathering, medium grained sandstone withminor siltstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone withminor siltstone

SILTSTONE: Brown, heavily weathered, siltstone

SILTSTONE: Brown, moderate weathering, siltstone and minor fine grainedsandstone


SANDSTONE: Brown, moderate weathering, medium grained sandstone withminor siltstone


SILTSTONE: Pink/brown, moderate weathering, siltstone

SILTSTONE: Pink, moderate weathering, siltstone with minor fine grainedsandstone

SANDSTONE: Cream, moderate weathering, fine grained sandstone withminor siltstone




Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

Dry NA

146mm (5, 3/4")

9/07/2014

9/07/2014Top Drill




M04


M04AB0101-01-01

Stickup 0.91magl










SWL: Dry


PVC End Cap

SILTSTONE: Red, moderate weathering, siltstone



SILTSTONE: Brown, moderate weathering, siltstone with minor very finegrained sandstone


SILTSTONE: Brown, moderate weathering, siltstone with minor very finegrained sandstone




Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

60.01mbgl 30/07/2014

146mm (5, 3/4")

5/07/2014

5/07/2014Top Drill




M05


M05AB0101-01-01

Stickup 0.66magl






SWL: 60.01mbgl


ALLUVIUM: Red, coarse, Fe-rich, heavily weathered, transported material

SANDSTONE: Brown, heavily weathered, coarse grained sandstone









SANDSTONE: Brown, moderate weathering, medium to coarse grainedsandstone






SILTSTONE: Brown, moderate weathering, siltstone and minor fine grainedsandstone, trace quartz

SANDSTONE: Brown, moderate weathering, fine grained sandstone, minorsiltstone and trace quartz

SANDSTONE: Brown, moderate weathering, very coarse to coarse grainedsandstone

SILTSTONE: Grey, moderate weathering, siltstone

SANDSTONE: Grey, moderate weathering, fine grained sandstone and minorsiltstone

SANDSTONE: Grey, slight to moderate weathering, coarse to mediumgrained sandstone

0 10000

20000

0 10000

20000

0 10000

20000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

60.01mbgl 30/07/2014

146mm (5, 3/4")

5/07/2014

5/07/2014Top Drill




M05


M05AB0101-01-01





PVC End Cap


SILTSTONE: Grey, slight weathering, siltstone and minor quartz

SILTSTONE: Grey, slight weathering, siltstone

SILTSTONE: Grey, slight weathering, siltstone and minor fine grainedsandstone


SANDSTONE: Grey, slight weathering, medium grained sandstone


SANDSTONE: Grey, slight weathering, fine grained sandstone

SANDSTONE: Grey, slight weathering, medium to coarse grained sandstone

SILTSTONE: Grey, slight weathering, siltstone and minor fine grainedsandstone


SANDSTONE: Grey, slight weathering, fine grained sandstone and minorsiltstone


SANDSTONE: Grey, slight weathering, fine grained sandstone

SANDSTONE: Grey, slight weathering, medium to coarse grained sandstone

0 10000

20000

0 10000

20000

0 10000

20000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

67.93mbgl 30/07/2014

146mm (5, 3/4")

8/07/2014

8/07/2014Top Drill




M06A


M06AAB0101-01-01

Stickup 0.92magl






SWL: 67.93mbgl


SILTSTONE: Red, highly weathered, ferruginous siltstone and minor fine grained sandstone

SILTSTONE: Red, moderate weathering, siltstone

SILTSTONE: Grey/ red, moderate weathering, siltstone


SILTSTONE: Grey, moderate weathering, siltstone and quartz 30-50%


SANDSTONE: Grey, moderate weathering, very fine grained sandstone and minor siltstone


SANDSTONE: Grey, moderate weathering, very fine grained sandstone and minor siltstone


QUARTZ: Red/grey, primarily quartz with moderately weathered siltstone

SILTSTONE: Red, highly weathered, siltstone


SILTSTONE: Grey, moderate weathering, siltstone and very fine grained sandstone 50%

SANDSTONE: Grey, very fine grained sandstone and minor siltstone

QUARTZ: Grey, primarily quartz, moderate weathering, minor siltstone and very fine grainedsandstone

SILTSTONE: Grey/red, moderate weathering, siltstone

SILTSTONE: Black, moderate weathering, siltstone and minor very fine grained sandstone

SANDSTONE: Black, moderate weathering, fine grained sandstone and quartz 50%

QUARTZ: Black, primarily quartz, minor fine grained sandstone and siltstone

SILTSTONE: Black, moderate weathering, siltstone

SANDSTONE: Black, moderate weathering, very fine grained sandstone and minor siltstone

0 20000

40000

0 20000

40000

0 20000

40000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

67.93mbgl 30/07/2014

146mm (5, 3/4")

8/07/2014

8/07/2014Top Drill




M06A


M06AAB0101-01-01





PVC End Cap


SILTSTONE: Black, moderate weathering, siltstone and very fine grained sandstone 10-50%

SILTSTONE: Black, moderate weathering, siltstone

SANDSTONE: Black, moderate weathering, fine grained sandstone and minor siltstone

SILTSTONE: Black, moderate weathering, siltstone and minor fine grained sandstone


SILTSTONE: Black, moderate weathering, siltstone and minor fine grained sandstone


SILTSTONE: Black, slightly weathered, siltstone

SILTSTONE: Black, fresh rock, siltstone

SANDSTONE: Black, fresh rock, fine grained sandstone and minor siltstone

SILTSTONE: Black, fresh rock, siltstone and minor fine grained sandstone

0 20000

40000

0 20000

40000

0 20000

40000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

59.10mbgl 30/07/2014

146mm (5, 3/4")

6/07/2014

7/07/2014Top Drill




M07


M07AB0101-01-01

Stickup 0.84magl






SWL: 59.10mbgl


ALLUVIUM: Red, heavily weathered, poorly sorted, Fe-rich, transportedmaterials

SANDSTONE: Red/cream, moderate weathering, medium grained sandstone

SANDSTONE: Cream, moderate weathering, medium grained sandstone andminor siltstone

SANDSTONE: Cream/pink, heavily weathered, medium grained sandstone

SANDSTONE: Cream/brown, moderate weathering, medium grainedsandstone and minor siltstone

SANDSTONE: Cream/brown, moderate weathering, medium grainedsandstone

SANDSTONE: Cream/pink, heavily weathered, medium grained sandstone

SANDSTONE: Cream/pink, slightly weathered, medium grained sandstone

0 5000

10000

0 5000

10000

0 5000

10000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

140

145

150

59.10mbgl 30/07/2014

146mm (5, 3/4")

6/07/2014

7/07/2014Top Drill




M07


M07AB0101-01-01






PVC End Cap

SANDSTONE: Cream/pale green, fresh rock, medium grained sandstone

SANDSTONE: Cream/pink, slightly weathered, medium grained sandstone

SANDSTONE: Cream/pale green, fresh rock, medium grained sandstone

SANDSTONE: Grey, fresh rock, fine grained sandstone

SANDSTONE: Pale green, fresh rock, medium grained sandstone

SANDSTONE: Pale green/ grey, fresh rock, medium grained sandstone andminor siltstone


SANDSTONE: Pale green/ grey, fresh rock, medium grained sandstone andminor siltstone


0 5000

10000

0 5000

10000

0 5000

10000

0 5000

10000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

67.25mbgl 30/07/2014

146mm (5, 3/4")

5/07/2014

5/07/2014Top Drill




M08A


M08AAB0101-01-01

Stickup 0.91magl






SWL: 67.25mbgl

0 3000

6000

0 3000

6000

0 3000

6000

ALLUVIUM: Red, coarse, heavily weathered, Fe- rich, transported material

SANDSTONE: Red, moderate weathering, medium grained sandstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone and minor siltstone

SILTSTONE: Brown, moderate weathering, siltstone and minor fine grained sandstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone and minor siltstone

SANDSTONE: Brown, moderate weathering, very coarse to coarse grained sandstone, tracequartz in some metres

SANDSTONE: Brown, moderate weathering, coarse grained sandstone with minor siltstone


SILTSTONE: Brown, moderate weathering, siltstone, with minor to trace fine grained sandstone

SANDSTONE: Brown, moderate weathering, medium to fine grained sandstone and tracesiltstone




SANDSTONE: Brown, moderate weathering, fine grained sandstone with minor siltstone

SILTSTONE: Brown, moderate weathering, siltstone, with minor fine grained sandstone

SANDSTONE: Brown, moderate weathering, fine to medium grained sandstone with tracesiltstone







SILTSTONE: Brown, moderate weathering, siltstone and minor medium grained sandstone

SILTSTONE: Brown/grey, moderate weathering, siltstone and minor quartz

SANDSTONE: Brown/grey, moderate weathering, medium grained sandstone, minor quartz

SILTSTONE: Brown/grey, moderate weathering, siltstone, minor quartz @54m

SILTSTONE: Brown/grey, moderate weathering, siltstone and minor fine grained sandstone

SANDSTONE: Brown/grey, moderate weathering, medium to very coarse grained sandstone

SILTSTONE: Brown/grey, moderate weathering, siltstone

SANDSTONE: Brown, moderate weathering, medium to very coarse grained sandstone



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

140

67.25mbgl 30/07/2014

146mm (5, 3/4")

5/07/2014

5/07/2014Top Drill




M08A


M08AAB0101-01-01





Bore DevelopmentIndicative Airlift Yield:0.15L/s

PVC End Cap


0 3000

6000

0 3000

6000

0 3000

6000


SANDSTONE: Brown, slight weathering, coarse to very coarse grained sandstone


SANDSTONE: Brown, slight weathering, medium to very coarse grained sandstone

SILTSTONE: Grey, slight weathering, siltstone, minor gine grained sandstone

SANDSTONE: Grey, slight weathering, fine to medium grained sandstone

SANDSTONE: Grey, slight weathering, coarse grained sandstone, minor siltstone

SANDSTONE: Grey, slight weathering, fine to coarse grained sandstone

SANDSTONE: Grey, slight weathering, medium grained sandstone, minor siltstone

SANDSTONE: Grey, slight weathering, medium grained sandstone, minor quartz

SILTSTONE: Grey, slight weathering, siltstone, minor quartz

SANDSTONE: Grey, slight weathering, medium grained sandstone

SILTSTONE: Grey, slight weathering, siltstone, trace quartz

SANDSTONE: Grey, fresh rock, fine to coarse grained sandstone

SILTSTONE: Grey, fresh rock, siltstone, minor fine grained sandstone, trace quartz

SANDSTONE: Grey, fresh rock, fine grained sandstone

SILTSTONE: Grey, fresh rock, siltstone, minor quartz

SANDSTONE: Grey, fresh rock, fine to coarse grained sandstone, minor quartz @138m



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

70.17mbgl 30/07/2014

146mm (5, 3/4")

7/07/2014

7/07/2014Top Drill




M09


M09AB0101-01-01

Stickup 0.86magl






SWL: 70.17mbgl

Bore Development,Indicative Airlift Yield:NA

ALLUVIUM: Red, Heavily weathered, Fe-rich, transported materials

MOTTLED ZONE: Red/white, heavily weathered, fine to medium grained sandstone and lateriticmaterial


SANDSTONE: Cream, heavily weathered, fine grained sandstone

SANDSTONE: Cream/brown, moderate weathering, fine to medium grained sandstone

SANDSTONE: Cream/pale green, slightly weathered, medium grained sandstone

0 6000

12000

0 6000

12000

0 6000

12000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

70.17mbgl 30/07/2014

146mm (5, 3/4")

7/07/2014

7/07/2014Top Drill




M09


M09AB0101-01-01



Fallback 131mbgl to132mbglTotal drilled depth132m

PVC End Cap


NB: BoreDevelopmentIncomplete

SANDSTONE: Pale green, slightly weathered, medium grained sandstone

SANDSTONE: Pale green/grey, slightly weathered, medium grained sandstone

SANDSTONE: Grey, slightly weathered, medium grained sandstone

SANDSTONE: Grey/ brown, slightly weathered, medium grained sandstone with minor siltstone

SANDSTONE: Grey/ brown, fresh rock, medium grained sandstone

SANDSTONE: Grey, fresh rock, coarse grained sandstone

SANDSTONE: Grey, fresh rock, very fine grained sandstone

SANDSTONE: Grey/ brown, fresh rock, coarse to medium grained sandstone

SANDSTONE: Grey/brown, fresh rock, fine grained sandstone

SANDSTONE: Grey/brown, fresh rock, medium grained sandstone

SANDSTONE: Grey/brown, fresh rock, medium grained sandstone with minor siltstone

SANDSTONE: Grey/brown, fresh rock, medium grained sandstone

SANDSTONE: Dark grey, fresh rock, fine grained sandstone with minor siltstone

SANDSTONE: Dark grey, fresh rock, medium grained sandstone

SANDSTONE: Dark grey, fresh rock, fine grained sandstone with minor siltstone

SANDSTONE: Dark grey, fresh rock, fine to medium grained sandstone

0 6000

12000

0 6000

12000

0 6000

12000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

95

49.19mbgl 30/07/2014

130mm (5, 1/8")

10/07/2014

10/07/2014Top Drill


513252.59mEWilson's Bore


M10A


M10AAB0101-01-01

Stickup 0.64magl








Total drilled depth89.7m

SWL: 49.19mbgl


PVC End Cap

ALLUVIUM: Dark red, coarse, heavily weathered, Fe-rich, transported material

SANDSTONE: Red/grey, minor weathering, fine grained standstone and minor siltstone

SANDSTONE: Cream/grey, minor weathering, medium grained sandstone

SANDSTONE: Cream/red, moderate weathering, fine to medium grained sandstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone and quartz 50%.

SANDSTONE: Brown, moderate weathering, medium grained sandstone and pelite 50%

PELITE: Brown, moderate weathering, pelite and trace quartz

SANDSTONE: Brown, moderate weathering, coarse sandstone and minor quartz

PELITE: Brown, moderate weathering, pelite with minor medium grained standstone

PELITE: Brown, moderate weathering, pelite, with minor quartz

PELITE: Brown, moderate weathering, pelite with minor fine grained standstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone with minor quartz and pelite

PELITE: Brown, moderate weathering, pelite, with minor quartz

PELITE: Brown, moderate weathering, pelite, with trace fine grained sandstone.

PELITE: Brown, moderate weathering, pelite, with minor quartz and fine grained sandstone

PELITE: Brown, moderate weathering, pelite

SANDSTONE: Brown, moderate weathering, very fine grained sandstone

PELITE: Brown, moderate weathering, pelite, with minor quartz and fine grained sandstone

PELITE: Brown, moderate weathering, pelite, with very fine grained sandstone 50%

PELITE: Brown, moderate weathering, pelite

PELITE: Brown, moderate weathering, pelite, with minor fine grained sandstone

SANDSTONE: Brown, moderate weathering, fine grained sandstone and minor pelite

PELITE: Brown, moderate weathering, pelite, with minor fine grained sandstone

PELITE: White/pale brown, moderate weathering, pelite, no longer sandstone in sample

0 10000

20000

0 10000

20000

0 10000

20000

0 10000

20000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

54.61mbgl 22/07/2014

146mm (5, 3/4")

1/07/2014

1/07/2014Top Drill

J.I./ S.W. Monitoring 438.59mAHD (Top Casing)7770190.36mN

516537.24mECorsair Bore


M11


M11AB0101-01-01

Stickup 0.16magl






SWL: 54.61mbgl


ALLUVIUM: Red/brown, heavily weathered, poorly sorted, Fe-rich, transported materials

SANDSTONE: Brown, moderate weathering, medium grained sandstone, trace quartz

SILTSTONE: Brown, moderate weathering, siltstone and very fine grained sandstone


SILTSTONE: Brown, moderate weathering, siltstone and very fine grained sandstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone and minor very finegrained sandstone


SILTSTONE: Cream/brown, moderate weathering, siltstone and trace quartz


SILTSTONE: Brown, moderate weathering, siltstone and trace quartz


SILTSTONE: Brown/cream, moderate weathering, siltstone and trace quartz

SANDSTONE: Brown, moderate weathering, fine to medium grained sandstone, trace to minorquartz

SILTSTONE: Brown/pale grey, moderate weathering, silstone, trace quartz

0 3000

6000

0 3000

6000

0 3000

6000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





75

80

85

90

95

100

105

110

115

120

125

130

135

140

145

150

54.61mbgl 22/07/2014

146mm (5, 3/4")

1/07/2014

1/07/2014Top Drill

J.I./ S.W. Monitoring 438.59mAHD (Top Casing)7770190.36mN

516537.24mECorsair Bore


M11


M11AB0101-01-01





PVC End Cap


SILTSTONE: Dark grey, moderate weathering, siltstone, trace quartz

SANDSTONE: Brown, moderate weathering, fine grained sandstone, trace quartz

SILTSTONE: Dark grey/cream brown, moderate weathering, siltstone, trace quartz

SANDSTONE: Brown, moderate weathering, medium grained sandstone, trace to minor quartz

SANDSTONE: Brown, moderate weathering, medium grained sandstone with trace siltstone

SANDSTONE: Brown, moderate weathering, medium grained sandstone with trace quartz

SANDSTONE: Dark grey/brown, moderate weathering, very fine to medium grained sandstone


SILTSTONE: Grey/brown, moderate weathering, siltstone

SANDSTONE: Brown/grey, moderate weathering, medium grained sandstone

SANDSTONE: Dark grey, moderate weathering, very fine grained sandstone

SANDSTONE: Dark grey, moderate weathering, fine grained sandstone, trace quartz

SANDSTONE: Dark grey, moderate weathering, medium to very coarse grained sandstone

SANDSTONE: Dark grey, moderate weathering, medium grained sandstone, minor quartz

0 3000

6000

0 3000

6000

0 3000

6000

0 3000

6000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

3.38mbgl 4/08/2014

267mm (10.5")

5/07/2014

9/07/2014Top Drill

P.H./ S.W. Production 418.26mAHD (Top Casing)7764891.92mN

509508.96mEStrezza's/Timmy's


Strezza's/TB2


Strezza's/TB2AB0101-01-01

Stickup 0.62magl





Slotted Interval from6mbgl to 39.9mbgl,155mm PN12 µPVC -1mm transversemachine slotted


Fallback 39.9mbgl to42mbglTotal drilled depth42m

SWL: 3.38mbgl

Bore Development,Indicative Airlift Yield8.4L/s

PVC End Cap

ALLUVIUM: Dark red, heavily weathered, coarse, Fe-rich transported materialwith ~10% silcrete

CALCRETE: Cream/brown, well developed calcrete over a transportedaeolian sand

CAVITY: No cutting returned, cavity, loss of circulation

CAVITY: Some circulation, but sample return limited to flocculated clays andpolymer

CALCRETE: Cream/brown, moderate weathering, calcrete developed overaeolian sand with approximately 20% lateritic material

0 2500

5000

0 2500

5000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

3.33mbgl 31/07/2014

130mm (5, 1/8")

15/07/2014

15/07/2014Top Drill

K.E / S.W. Monitoring 418.51mAHD (Top Casing)7765909.34mN

509819.97mEStrezza's/Timmy's


BF01


BF01AB0101-01-01

Stickup 0.51magl



Backfill 1mbgl to3mbglBentonite Plug 3mbglto 4mbgl





PVC End Cap


SWL: 3.33mbgl


ALLUVIUM: Red, extremely weathered, poorly sorted, Fe-rich, transportedmaterials

CALCRETE: Red, extremely weathered, well developed calcrete, tracesilcrete

SANDSTONE: Red, extremely weathered, fine grained sandstone with minoralluvium and trace silcrete

SANDSTONE: Red, moderate weathering, fine grained sandstone with minorsiltstone and pelite

SANDSTONE: Pale grey, moderate weathering, fine grained sandstone withminor pelite and quartz

SANDSTONE: Pale grey, moderate weathering, fine grained sandstone withminor siltstone and pelite

PELITE: Pale grey, moderate weathering, pelite with minor very fine grainedsandstone

PELITE: Pale yellow, moderate weathering, pelite with trace very fine to finegrained sandstone

0 2500

5000

0 2500

5000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

2.88mbgl 31/07/2014

130mm (5, 1/8")

14/07/2014

14/07/2014Top Drill

K.E. / S.W. Monitoring 418.22mAHD (Top Casing)7765117.24mN

509563.73mEStrezza's/ Timmy's


BF02


BF02AB0101-01-01

Stickup 0.69magl



Backfill 1mbgl to3mbglBentonite Plug 3mbglto 4mbgl




Fallback 41.3mbgl to42mbglTotal drilled depth42m

SWL: 2.88mbgl


PVC End Cap

ALLUVIUM: Red, poorly sorted, heavily weathered, fe-rich, transportedmaterial

SILCRETE: White/transparent, hard, conchoidal fracture, 100% silcrete

CALCRETE: Cream/brown, heavily weathered, calcrete with minor silcrete

SANDSTONE: Brown, heavily weathered, fine grained sandstone with minorsiltstone and pelite

SILTSTONE: Pale grey, heavily weathered, siltstone with minor fine grainedsandstone and pelite

PELITE: Pale yellow, moderate weathering, pelite

PELITE: Pale yellow, moderate weathering, pelite with trace very coarsegrained sandstone

PELITE: Pale yellow, moderate weathering, pelite with minor very coarsegrained sandstone

PELITE: Pale yellow, moderate weathering, pelite with trace coarse to verycoarse grained sandstone

0 500

1000

0 500

1000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

3.11mbgl 4/8/2014

130mm (5, 1/8")

12/07/2014

12/07/2014Top Drill


509507.99mEStrezza's/ Timmy's


BF03A


BF03AAB0101-01-01

Stickup 0.51magl







Fallback 41.25mbglto 42mbglTotal drilled depth42m

SWL: 3.11mbgl


PVC End Cap

ALLUVIUM: Red, coarse, Fe-rich, transported material

CALCRETE: Cream/ brown, moderately weathered, well developed calcrete

CALCRETE: Cream/ brown, moderately weathered, calcrete with fine grainedsandstone 50%

SANDSTONE: Red, moderate weathering, fine grained sandstone

PELITE: Cream, moderate weathering, pelite

PELITE: Cream, moderate weathering, pelite with quartz 50%

CALCRETE: Brown, moderately weathered, well developed calcrete

PELITE: Cream, moderate weathering, pelite

SILTSTONE: Pale green, moderate weathering, siltstone with trace to minorvery fine grained sandstone

SANDSTONE: Pale green, moderate weathering, fine grained sandstone withminor siltstone

PELITE: Pale grey, moderate weathering, pelite with trace very fine grainedsandstone

PELITE: Pale grey, moderate weathering, pelite with minor very coarsegrained sandstone

PELITE: Pale grey, moderate weathering, pelite with trace very fine grainedsandstone

PELITE: Pale grey, moderate weathering, pelite with minor very coarsegrained sandstone

PELITE: Pale grey, moderate weathering, pelite with trace medium grainedsandstone

0 1500

3000

0 1500

3000



Logged By:Drilled:


Dep

th

Gra

phic

(mbg

l)

Log Well Completion

Diagram Notes

COMPOSITE WELL LOG

Geo

logy

Stra

ti-gr

aphy



ELLENBROOK, WA 6069


Site:East (MGA):

SRP RL:North (MGA):

Method:Fluid:





0

5

10

15

20

25

30

35

40

45

2.96mbgl 31/07/2014

130mm (5, 1/8")

13/07/2014

13/07/2014Top Drill


509452.79mEStrezza's / Timmy's


BF04


BF04AB0101-01-01

Stickup 0.53magl





Slotted Interval from5.15mbgl to41.15mbgl, 50mmPN12 µPVC - 1mmtransverse machineslotted1.6 to 3.2mm GravelPack, 4mbgl to41.15mbgl




SWL: 2.96mbgl


PVC End Cap

ALLUVIUM: Red, extremely weathered, poorly sorted, Fe-rich, transported material

CALCRETE: Cream/red, extremely weathered, calcrete

SANDSTONE: Red, highly weathered, fine grained sandstone with minor alluvium

SANDSTONE: Red, moderate weathering, fine grained sandstone with minor pelite

SILTSTONE: Red, moderate weathering, siltstone with minor pelite and calcrete

SILTSTONE: Pale grey, moderate weathering, siltstone with minor pelite

PELITE: Pale grey/pale yellow, moderate weathering, pelite with trace fine grained sandstone

PELITE: Pale yellow, moderate weathering, pelite with trace very coarse grained sandstone

PELITE: Pale yellow, moderate weathering, pelite with trace fine grained sandstone

PELITE: Pale yellow, moderate weathering, pelite with minor very coarse grained sandstone

0 1000

2000

0 1000

2000


ABM Resources NL


APPENDIX C

Electrical Conductivity Profiles

Date: 30-Jul-14Site: Location: Slotted: 42-114 mbglSWL: 67.87 mbglStick Up: 0.67 maglEOH: 114.00 mbgl

Sample Depth (mbtoc)

Sample Depth (mbgl) EC (us/cm)

68.54 67.87 10000.0069.00 68.33 9994.0070.00 69.33 9971.0071.00 70.33 10000.0072.00 71.33 10000.0073.00 72.33 10200.0074.00 73.33 11200.0075.00 74.33 11300.0076.00 75.33 11400.0077.00 76.33 11100.0078.00 77.33 11100.0079.00 78.33 11200.0080.00 79.33 11400.0081.00 80.33 11400.0082.00 81.33 11300.0083.00 82.33 11200.0084.00 83.33 11100.0085.00 84.33 11000.0086.00 85.33 11100.0087.00 86.33 11400.0088.00 87.33 11600.0089.00 88.33 11100.0090.00 89.33 11100.00

91.00 90.33 11000.00

92.00 91.33 10900.00

93.00 92.33 11200.00

94.00 93.33 11300.00

95.00 94.33 11200.00

96.00 95.33 11200.00

97.00 96.33 11100.00

98.00 97.33 11200.00

99.00 98.33 11200.00

100.00 99.33 11500.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4

CLIENT: ABM Resources NL PROJECT: Twin Bonanza Gold Project

A01EC PROFILE


20/08/2014 C1

Analogue

AB0101-01-02 EC ProfileG001 Monitoring Bore A01

50

60

70

80

90

100

110 0 2000

4000

6000

8000

10000

12000

14000

16000

18000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

A01

Date: 30-Jul-14Site: Location: Slotted: 40.6-130.6 mbglSWL: 60.01 mbglStick Up: 0.66 maglEOH: 130.60 mbgl



60.67 60.01 11300.0060.87 60.21 12100.0061.87 61.21 12300.0062.87 62.21 12000.0063.87 63.21 12000.0064.87 64.21 12000.0065.87 65.21 14400.0066.87 66.21 13000.0067.87 67.21 12800.0068.87 68.21 12900.0069.87 69.21 12800.0070.87 70.21 12400.0071.87 71.21 12700.0072.87 72.21 12900.0073.87 73.21 13100.0074.87 74.21 13100.0075.87 75.21 12900.0076.87 76.21 13200.0077.87 77.21 13700.0078.87 78.21 13500.0079.87 79.21 13700.0080.87 80.21 13700.0081.87 81.21 13800.00

82.87 82.21 13800.00

83.87 83.21 13800.00

84.87 84.21 13800.00

85.87 85.21 13800.00

86.87 86.21 14000.00

87.87 87.21 14100.00

88.87 88.21 14200.00

89.87 89.21 14200.00

90.87 90.21 14200.00

91.87 91.21 14400.00

92.87 92.21 14700.00

93.87 93.21 14700.00

94.87 94.21 14700.00

95.87 95.21 14600.00

96.87 96.21 14700.00

97.87 97.21 14300.00

98.87 98.21 14700.00

99.87 99.21 14800.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


20/08/2014 C2

Plant Site

AB0101-01-02 EC ProfileG002 Monitoring Bore M05

M05EC PROFILE


50

60

70

80

90

100

110 0 2000

4000

6000

8000

10000

12000

14000

16000

18000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

M05




68.85 67.93 22400.0069.98 69.06 22800.0070.98 70.06 22900.0071.98 71.06 22800.0072.98 72.06 23000.0073.98 73.06 23800.0074.98 74.06 26300.0075.98 75.06 25800.0076.98 76.06 26300.0077.98 77.06 26700.0078.98 78.06 27600.0079.98 79.06 27700.0080.98 80.06 28100.0081.98 81.06 27800.0082.98 82.06 27800.0083.98 83.06 28900.0084.98 84.06 28900.0085.98 85.06 29200.0086.98 86.06 29000.0087.98 87.06 29300.0088.98 88.06 29400.0089.98 89.06 29800.0090.98 90.06 30300.00

91.98 91.06 30600.00

92.98 92.06 30500.00

93.98 93.06 29500.00

94.98 94.06 30200.00

95.98 95.06 30400.00

96.98 96.06 30600.00

97.98 97.06 31100.00

98.98 98.06 30500.00

99.98 99.06 31300.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


20/08/2014 C3

Plant Site

AB0101-01-02 EC ProfileG003 Monitoring Bore M06A

M06AEC PROFILE


50

60

70

80

90

100

110 0 5000

10000

15000

20000

25000

30000

35000

40000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

M06A




59.94 59.10 4764.0061.09 60.25 4831.0062.09 61.25 5210.0063.09 62.25 5303.0064.09 63.25 5303.0065.09 64.25 6139.0066.09 65.25 5241.0067.09 66.25 5092.0068.09 67.25 4935.0069.09 68.25 4790.0070.09 69.25 4684.0071.09 70.25 4743.0072.09 71.25 4670.0073.09 72.25 4750.0074.09 73.25 4727.0075.09 74.25 4654.0076.09 75.25 4619.0077.09 76.25 4513.0078.09 77.25 4550.0079.09 78.25 4640.0080.09 79.25 4588.0081.09 80.25 4576.0082.09 81.25 4550.00

83.09 82.25 4604.00

84.09 83.25 4512.00

85.09 84.25 4589.00

86.09 85.25 4427.00

87.09 86.25 4444.00

88.09 87.25 4482.00

89.09 88.25 4455.00

90.09 89.25 4565.00

91.09 90.25 4526.00

92.09 91.25 4615.00

93.09 92.25 4631.00

94.09 93.25 4541.00

95.09 94.25 4641.00

96.09 95.25 4684.00

97.09 96.25 4700.00

98.09 97.25 4705.00

99.09 98.25 4662.00

100.09 99.25 4674.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


20/08/2014 C4

Plant Site


M07EC PROFILE


50

60

70

80

90

100

110 0 1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

M07




68.16 67.25 2973.0069.03 68.12 2898.0070.03 69.12 2898.0071.03 70.12 2933.0072.03 71.12 2873.0073.03 72.12 2835.0074.03 73.12 2816.0075.03 74.12 2824.0078.03 77.12 2946.0079.03 78.12 2943.0080.03 79.12 3025.0081.03 80.12 3026.0082.03 81.12 2990.0083.03 82.12 3098.0084.03 83.12 3128.0085.03 84.12 3080.0086.03 85.12 3180.0087.03 86.12 3228.0088.03 87.12 3243.0089.03 88.12 3228.0090.03 89.12 3236.0091.03 90.12 3220.0092.03 91.12 3224.00

93.03 92.12 3315.00

94.03 93.12 3443.00

95.03 94.12 3381.00

96.03 95.12 3409.00

97.03 96.12 3426.00

98.03 97.12 3518.00

99.03 98.12 3513.00

100.03 99.12 3487.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


M08AEC PROFILE


20/08/2014 C5

Plant Site


50

60

70

80

90

100

110 0 1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

M08A

Date: 30-Jul-14Site: Location: Slotted: 41-131 mbglSWL: 70.17 mbglStick Up: 0.86 maglEOH: 131.00 mbgl



71.03 70.17 10000.0071.92 71.06 9590.0072.92 72.06 9488.0073.92 73.06 9489.0074.92 74.06 9435.0075.92 75.06 10100.0076.92 76.06 8858.0077.92 77.06 9143.0078.92 78.06 9390.0079.92 79.06 9555.0080.92 80.06 8584.0081.92 81.06 9605.0082.92 82.06 9590.0083.92 83.06 9613.0084.92 84.06 9692.0085.92 85.06 9721.0086.92 86.06 9849.0087.92 87.06 9799.0088.92 88.06 9678.0089.92 89.06 9719.0090.92 90.06 9832.0091.92 91.06 9844.0092.92 92.06 9863.00

93.92 93.06 9870.00

94.92 94.06 9966.00

95.92 95.06 9972.00

96.92 96.06 10000.00

97.92 97.06 10000.00

98.92 98.06 10000.00

99.92 99.06 10000.00

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


M09EC PROFILE


20/08/2014 C6

Plant Site


50

60

70

80

90

100

110 0 1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

M09

Date: 04-Aug-14Site: Location: Slotted: 41.7-89.7 mbglSWL: 49.19 mbglStick Up: 0.64 maglEOH: 89.95 mbgl



49.83 49.19 1260051.07 50.43 1290053.07 52.43 1460055.07 54.43 1920057.07 56.43 1720059.07 58.43 1670061.07 60.43 1660063.07 62.43 1590065.07 64.43 1570067.07 66.43 1710069.07 68.43 1710071.07 70.43 1610073.07 72.43 1740075.07 74.43 1680077.07 76.43 1640079.07 78.43 1620081.07 80.43 1720083.07 82.43 1580085.07 84.43 1720087.07 86.43 1780089.07 88.43 1780090.02 89.38 17300

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Post-Purge


M10AEC PROFILE

20/08/2014 C7

Wilson's Bore


40

50

60

70

80

90

100 0 5000

10000

15000

20000

25000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

Post-Purge

Date: 22-Jul-14 Date: 04-Aug-14Site: Site: Location: Location: Slotted: unknown mbgl Slotted: unknown mbglSWL: 45.06 mbgl SWL: 49.44 mbglStick Up: 0.54 magl Stick Up: 0.54 maglEOH: 83.46 mbgl EOH: 84.16 mbgl

Sample Depth

(mbtoc)Sample Depth

(mbgl) EC (us/cm)Sample Depth

(mbtoc)Sample

Depth (mbgl) EC (us/cm)45.60 45.06 3749 49.98 49.44 1050046.00 45.46 12700 52.00 51.46 1120047.00 46.46 13500 54.00 53.46 1130048.00 47.46 13500 56.00 55.46 1350049.00 48.46 13500 58.00 57.46 1270050.00 49.46 13500 60.00 59.46 1240051.00 50.46 16700 62.00 61.46 1240052.00 51.46 15100 64.00 63.46 1220053.00 52.46 14300 66.00 65.46 1210054.00 53.46 14200 68.00 67.46 1210055.00 54.46 13200 70.00 69.46 1220056.00 55.46 12700 72.00 71.46 1230057.00 56.46 13400 74.00 73.46 1200058.00 57.46 15200 76.00 75.46 1230059.00 58.46 14100 78.00 77.46 1210060.00 59.46 14000 80.00 79.46 1280061.00 60.46 14400 81.00 80.46 1290062.00 61.46 14100 82.00 81.46 1280063.00 62.46 14400 83.00 82.46 1280064.00 63.46 14100 84.00 83.46 1340065.00 64.46 14400 84.70 84.16 1320066.00 65.46 1530067.00 66.46 16000

68.00 67.46 15100

69.00 68.46 14600

70.00 69.46 14400

71.00 70.46 16700

72.00 71.46 15700

73.00 72.46 15300

74.00 73.46 15900

75.00 74.46 15800

76.00 75.46 15500

77.00 76.46 14900

78.00 77.46 14800

79.00 78.46 14900

80.00 79.46 17700

81.00 80.46 17600

82.00 81.46 17000

83.00 82.46 16900

84.00 83.46 17900

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Wilson's BorePre-Purge EC PROFILE Post-Purge

Twin Bonanza Gold Project Twin Bonanza Gold Project

20/08/2014 C8

Wilson's Bore Wilson's Bore

AB0101-01-02 EC ProfileG008 Wilson's Bore

40

50

60

70

80

90

100 0 5000

10000

15000

20000

25000D

epth

(mbg

l)

EC at 25'C (uS/cm)

Post-Purge Pre-purge

Date: 22-Jul-14 Date: 04-Aug-14Site: Site: Location: Location: Slotted: 42-150 mbgl Slotted: 42-150 mbglSWL: 54.61 mbgl SWL: 54.78 mbglStick Up: 0.16 magl Stick Up: 0.16 maglEOH: 150.00 mbgl EOH: 150.00 mbgl

Sample Depth

(mbtoc)Sample Depth


(mbtoc)Sample

Depth (mbgl) EC (us/cm)54.77 54.61 3459 54.94 54.78 233055.85 55.69 3427 55.85 55.69 212556.85 56.69 3408 56.85 56.69 212357.85 57.69 3401 57.85 57.69 209458.85 58.69 3432 58.85 58.69 208159.85 59.69 4031 59.85 59.69 212060.85 60.69 3868 60.85 60.69 217361.85 61.69 3740 61.85 61.69 208762.85 62.69 3694 62.85 62.69 220563.85 63.69 3708 63.85 63.69 211364.85 64.69 3768 64.85 64.69 212965.85 65.69 3853 65.85 65.69 213066.85 66.69 3738 66.85 66.69 213167.85 67.69 3715 67.85 67.69 210268.85 68.69 3603 68.85 68.69 220769.85 69.69 3710 69.85 69.69 207570.85 70.69 3513 70.85 70.69 200471.85 71.69 3579 71.85 71.69 202872.85 72.69 3557 72.85 72.69 197673.85 73.69 3459 73.85 73.69 187574.85 74.69 3500 74.85 74.69 191775.85 75.69 3472 75.85 75.69 193876.85 76.69 3533 76.85 76.69 1936

77.85 77.69 3567 77.85 77.69 1956

78.85 78.69 3482 78.85 78.69 1957

79.85 79.69 3543 79.85 79.69 1980

80.85 80.69 3559 80.85 80.69 1996

81.85 81.69 3474 81.85 81.69 1953

82.85 82.69 3561 82.85 82.69 1996

83.85 83.69 3773 83.85 83.69 2013

84.85 84.69 3832 84.85 84.69 2044

85.85 85.69 3886 85.85 85.69 2035

86.85 86.69 3879 86.85 86.69 1997

87.85 87.69 3796 87.85 87.69 2054

88.85 88.69 3887 88.85 88.69 2016

89.85 89.69 3927 89.85 89.69 2036

90.85 90.69 4083 90.85 90.69 2016

91.85 91.69 4098 91.85 91.69 2044

92.85 92.69 3933 92.85 92.69 2013

93.85 93.69 3852 93.85 93.69 2001

94.85 94.69 3933 94.85 94.69 1988

95.85 95.69 3880 95.85 95.69 1988

96.85 96.69 4132 96.85 96.69 2056

97.85 97.69 4083 97.85 97.69 2067

98.85 98.69 4032 98.85 98.69 2017

99.85 99.69 4033 99.85 99.69 2051

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


M11Pre-Purge EC PROFILE Post-Purge


20/08/2014 C9

Corsair Bore Corsair Bore


50

60

70

80

90

100 1000

1500

2000

2500

3000

3500

4000

4500

5000D

epth

(mbg

l)

EC at 25'C (uS/cm)

Pre-Purge Post-Purge

Date: 04-Aug-14Site: Location: Slotted: unknown mbglSWL: 55.01 mbglStick Up: 0.41 maglEOH: 150.00 mbgl



55.42 55.01 189056.00 55.59 183557.00 56.59 181958.00 57.59 182459.00 58.59 180760.00 59.59 180461.00 60.59 170562.00 61.59 165063.00 62.59 165164.00 63.59 162665.00 64.59 161866.00 65.59 161867.00 66.59 161468.00 67.59 160669.00 68.59 160470.00 69.59 160671.00 70.59 160672.00 71.59 163173.00 72.59 160674.00 73.59 156175.00 74.59 157876.00 75.59 157877.00 76.59 1596

78.00 77.59 1595

79.00 78.59 1608

80.00 79.59 1627

81.00 80.59 1662

82.00 81.59 1673

83.00 82.59 1675

84.00 83.59 1693

85.00 84.59 1699

86.00 85.59 1798

87.00 86.59 2083

88.00 87.59 2081

89.00 88.59 2089

90.00 89.59 2070

91.00 90.59 2083

92.00 91.59 2122

93.00 92.59 2101

94.00 93.59 2083

95.00 94.59 2083

96.00 95.59 2084

97.00 96.59 2081

98.00 97.59 2078

99.00 98.59 2076

100.00 99.59 2076

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Corsair BoreEC PROFILE Post-Purge


20/08/2014 C10

Corsair Bore

AB0101-01-02 EC ProfileG010 Corsair Bore

50

60

70

80

90

100 0 500

1000

1500

2000

2500

3000

3500

4000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

Post-Purge

Date: 31-Jul-14 Date: 03-Aug-14Site: Site: Location: Location: Slotted: 5.2-41.2 mbgl Slotted: 5.2-41.2 mbglSWL: 3.33 mbgl SWL: 3.19 mbglStick Up: 0.51 magl Stick Up: 0.51 maglEOH: 40.65 mbgl EOH: 40.64 mbgl

Sample Depth

(mbtoc)Sample Depth


(mbtoc)Sample


26.01 25.50 1621 26.01 25.50 1796

27.01 26.50 1823 27.01 26.50 1850

28.01 27.50 1997 28.01 27.50 2036

29.01 28.50 2028 29.01 28.50 2167

30.01 29.50 2001 30.01 29.50 2100

31.01 30.50 2046 31.01 30.50 2124

32.01 31.50 2098 32.01 31.50 2158

33.01 32.50 2167 33.01 32.50 2232

34.01 33.50 2262 34.01 33.50 2254

35.01 34.50 2292 35.01 34.50 2422

36.01 35.50 2457 36.01 35.50 2568

37.01 36.50 2863 37.01 36.50 2796

38.01 37.50 2899 38.01 37.50 2762

39.01 38.50 3649 39.01 38.50 3622

40.01 39.50 3858 40.01 39.50 3899

41.01 40.50 4331 41.01 40.50 4275

41.16 40.65 2802 41.15 40.64 3322

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Borefield Area Borefield Area

BF01Pre-Purge EC PROFILE Post-Purge


AB0101-01-02 EC ProfileG011 Monitoring Bore BF0120/08/2014 C11

0

10

20

30

40

0 500

1000

1500

2000

2500

3000

3500

4000

4500

5000D

epth

(mbg

l)

EC at 25'C (uS/cm)



Sample Depth

(mbtoc)Sample Depth


(mbtoc)Sample


26.24 25.55 590 26.24 25.55 655

27.24 26.55 598 27.24 26.55 671

28.24 27.55 589 28.24 27.55 669

29.24 28.55 579 29.24 28.55 653

30.24 29.55 558 30.24 29.55 642

31.24 30.55 609 31.24 30.55 664

32.24 31.55 632 32.24 31.55 701

33.24 32.55 625 33.24 32.55 695

34.24 33.55 666 34.24 33.55 741

35.24 34.55 700 35.24 34.55 703

36.24 35.55 646 36.24 35.55 700

37.24 36.55 692 37.24 36.55 786

38.24 37.55 698 38.24 37.55 798

39.24 38.55 718 39.24 38.55 827

40.24 39.55 724 40.24 39.55 828

41.24 40.55 735 41.24 40.55 806

41.97 41.28 845 42.00 41.31 801

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4




20/08/2014 C12


AB0101-01-02 EC ProfileG012 Monitoring Bore BF02

0

10

20

30

40

0 100

200

300

400

500

600

700

800

900

1000D

epth

(mbg

l)

EC at 25'C (uS/cm)


Date: 04-Aug-14Site: Location: Slotted: 5.25-41.25 mbglSWL: 3.11 mbglStick Up: 0.51 maglEOH: 41.51 mbgl



3.62 3.11 5514.20 3.69 5505.20 4.69 5336.20 5.69 5107.20 6.69 5458.20 7.69 5459.20 8.69 52410.20 9.69 52811.20 10.69 52712.20 11.69 48813.20 12.69 48814.20 13.69 51215.20 14.69 51916.20 15.69 54717.20 16.69 57118.20 17.69 63719.20 18.69 83220.20 19.69 89921.20 20.69 98322.20 21.69 100123.20 22.69 101524.20 23.69 100525.20 24.69 1017

26.20 25.69 1077

27.20 26.69 1037

28.20 27.69 1077

29.20 28.69 1055

30.20 29.69 1044

31.20 30.69 1116

32.20 31.69 1138

33.20 32.69 1136

34.20 33.69 1163

35.20 34.69 1125

36.20 35.69 1128

37.20 36.69 1291

38.20 37.69 1432

39.20 38.69 1426

40.20 39.69 1504

41.20 40.69 1631

42.02 41.51 2027

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Post-Purge


BF03AEC PROFILE

20/08/2014 C13

Borefield Area

AB0101-01-02 EC ProfileG013 Monitoring Bore BF03A

0

10

20

30

40

0 250

500

750

1000

1250

1500

1750

2000

2250

2500

Dep

th (m

bgl)

EC at 25'C (uS/cm)

Post-Purge


Sample Depth

(mbtoc)Sample Depth


(mbtoc)Sample


25.84 25.31 866 25.84 25.31 950

26.84 26.31 844 26.84 26.31 913

27.84 27.31 824 27.84 27.31 905

28.84 28.31 870 28.84 28.31 968

29.84 29.31 912 29.84 29.31 1008

30.84 30.31 940 30.84 30.31 1045

31.84 31.31 963 31.84 31.31 1019

32.84 32.31 965 32.84 32.31 998

33.84 33.31 956 33.84 33.31 1055

34.84 34.31 1054 34.84 34.31 1127

35.84 35.31 1066 35.84 35.31 1186

36.84 36.31 1155 36.84 36.31 1241

37.84 37.31 1154 37.84 37.31 1275

38.84 38.31 1130 38.84 38.31 1221

39.84 39.31 1158 39.84 39.31 1261

40.84 40.31 1219 40.84 40.31 1362

41.64 41.11 1615 41.60 41.07 1812

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4




20/08/2014 C14


AB0101-01-02 EC ProfileG014 Monitoring Bore BF04

0

10

20

30

40

0 250

500

750

1000

1250

1500

1750

2000D

epth

(mbg

l)

EC at 25'C (uS/cm)


Date: 04-Aug-14Site: Location: Slotted: 6-39.9 mbglSWL: 3.38 mbglStick Up: 0.62 maglEOH: 39.65 mbgl



4.00 3.38 4754.09 3.47 4525.09 4.47 4876.09 5.47 4927.09 6.47 4938.09 7.47 4869.09 8.47 49110.09 9.47 48711.09 10.47 47312.09 11.47 47813.09 12.47 48014.09 13.47 45515.09 14.47 47516.09 15.47 54517.09 16.47 56218.09 17.47 52819.09 18.47 54920.09 19.47 56521.09 20.47 55222.09 21.47 54223.09 22.47 51024.09 23.47 49425.09 24.47 505

26.09 25.47 497

27.09 26.47 467

28.09 27.47 487

29.09 28.47 473

30.09 29.47 453

31.09 30.47 437

32.09 31.47 452

33.09 32.47 435

34.09 33.47 428

35.09 34.47 424

36.09 35.47 428

37.09 36.47 445

38.09 37.47 428

39.09 38.47 466

40.09 39.47 1197

40.27 39.65 3414

PROJECT: TITLE:

DWG NUMBER

DATE: FIGURE: A4


Strezza's/Timmy's Bore 2Post Purge


EC PROFILE

20/08/2014 C15

Borefield Area

AB0101-01-02 EC ProfileG015 Strezza's/Timmy's Bore 2

0

10

20

30

40

0 500

1000

1500

2000

2500

3000

3500

4000

Dep

th (m

bgl)

EC at 25'C (uS/cm)

Post Purge


ABM Resources NL


APPENDIX D1

Test Pumping Plots

CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Step TestPROJECT: Twin Bonanza Gold Project DWG NO: G001 Corsair Bore

DATE: 22/07/2014 FIGURE: D1.1.1. A4

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

151 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Pump Bore: Corsair BorePump Inlet: ~100mbglPumping Rates (L/s): 1, 1.5, 1.7, 1.8 Standing Water Level: 55.82mbRPRP: Variable (see data sheet)Start Test: 22/07/2014 (0940)Stop Test: 22/07/2014 (1340)

CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Constant Rate TestPROJECT: Twin Bonanza Gold Project DWG NO: G002 Corsair Bore

DATE: 24-Jul-14 FIGURE: D1.1.2. A4

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.001 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Corsair Bore (r=0.075m, SWL=55.67mbRP)

M11 (r=10m, SWL=54.97mbRP)

Pump Bore: Corsair BorePump Inlet: ~100mbglAv.Pumping Rate: 1.5L/s (130KL/d)

Start Test: 23/07/2014 (0730hrs)Stop Test: 25/07/2014 (0730hrs)Duration of Test : 2880mins

CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Recovery TestPROJECT: Twin Bonanza Gold Project DWG NO: G005 Corsair Bore

DATE: 25-Jul-14 FIGURE: D1.1.3 A4

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

6.5

71 10 100 1000 10000

Res

idua

l Dra

wdo

wn

(met

res)

t/t'

Corsair Bore (r=0.075m, SWL=55.67mbRP)

M11 (r=10m, SWL=54.91mbRP)

Pump Bore: Corsair BorePump Inlet: ~100mbglAv.Pumping Rate: 1.5L/s (130KL/d)


CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Step TestPROJECT: Twin Bonanza Gold Project DWG NO: G004 Wilson's Bore

DATE: 26/07/2014 FIGURE: D1.2.1 A4

0

5

10

15

20

25

30

351 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Pump Bore: Wilson's BorePump Inlet: ~75mbglPumping Rates (L/s): 1, 1.5, 1.75Standing Water Level: 46.19mbRPRP: 0.65maglStart Test: 26/07/2014 (0930)Stop Test: 26/07/2014 (1500)

CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Constant Rate TestPROJECT: Twin Bonanza Gold Project DWG NO: G006 Wilson's Bore


0.00

5.00

10.00

15.00

20.00

25.00

30.001 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Wilson's Bore (r=0.075m, SWL=45.67mbRP)

M10A (r=10m, SWL=46.43mbRP)

Pump inlet

Pump Bore: Wilson's BorePump Inlet: ~75mbglAv.Pumping Rate: initial 1.5L/s (130kL/d); after 420mins reduced to 1.2L/s (104kL/d); after 440mins reduced to 1.0L/s (86kL/d)


CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Recovery TestPROJECT: Twin Bonanza Gold Project DWG NO: G005 Wilson's Bore


0

5

10

15

20

251 10 100 1000 10000

Res

idua

l Dra

wdo

wn

(met

res)

t/t'

Wilson's Bore (r=0.075m, SWL=46.55mbRP)

M10A (r=10m, SWL=46.43mbRP)

Pump Bore: Wilson's BorePump Inlet: ~75mbglAv.Pumping Rate: initial 1.5L/s (130kL/d); after 420mins reduced to 1.2L/s (104kL/d); after 440mins reduced to 1.0L/s (86kL/d)


CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Step TestPROJECT: Twin Bonanza Gold Project DWG NO: G007 Strezza's/Timmy's Bore 2

DATE: 31/07/2014 FIGURE: D1.3.1 A4

0

0.2

0.4

0.6

0.8

1

1.2

1.41 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Pump Bore: Strezza's/Timmy's Bore 2 Pump Inlet: ~36mbglPumping Rates (L/s): 3, 4, 5, 5.8 Standing Water Level: 4.01mbRPRP: 0.98maglStart Test: 31/07/2014 (0800)Stop Test: 31/07/2014 (1200)

CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Constant Rate TestPROJECT: Twin Bonanza Gold Project DWG NO: G012 Strezza's/Timmy's Bore 2

DATE: 01-Aug-14 FIGURE: D1.3.2 A4

-0.100

0.000

0.100

0.200

0.300

0.400

0.500

0.600

0.700

0.800

0.900

1.000

1.100

1.200

1.300

1.400

1.5001 10 100 1000 10000

Dra

wdo

wn

(met

res)

Time (minutes)

Strezza's/Timmy's Bore 2 (r=0.78m, SWL=4.01mbRP)

BF03A (r=7.3m, SWL=3.30mbRP)

BF04 (r=204m, SWL=3.63mbRP)

BF02 (r=232m, SWL=3.33mbRP)

BF01 (r=1,064m, SWL=3.66mbRP)

Pump Bore: Strezza's/Timmy's Bore 2Pump Inlet: ~37mbglAv.Pumping Rate: 5L/s (432KL/d)


CLIENT: ABM Resources NL PROJECT: AB0101-01-03 TITLE: Recovery TestPROJECT: Twin Bonanza Gold Project DWG NO: G010 Strezza's/Timmy's Bore 2

DATE: 03-Aug-14 FIGURE: D1.3.3 A4

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.501 10 100 1000 10000

Res

idua

l Dra

wdo

wn

(met

res)

t/t'

Strezza's/ Timmy's Bore (r=0.078m, SWL=4.01mbRP)

BF03A (r=7.3m, SWL=3.30mbRP)

Pump Bore: Strezza's/Timmy's Bore 2Pump Inlet: ~37mbglAv.Pumping Rate: 5L/s (432KL/d)



ABM Resources NL


APPENDIX D2

Test Pumping Data

PUMPING BORE/WELL No: Corsair Bore Date: 22/07/2014

Project No.: AB0101-01-03 Location: Twin Bonanza Gold Project

Static Water Level (m bRP) 55.82 Recorder's Name: S.W/R.HReference Point (m above plate) 0.55 Time: 9:36

Reference Point (m agl) 0.96 Document No.: D2.1.1Pump inlet depth (m bRP) ~100

Step #1 Pumping rate: ~1 (L/s) Step #3 Pumping rate: ~1.75 (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)1 56.53 0.71 121 60.86 5.212 56.32 0.5 122 60.97 5.323 56.34 0.52 123 61.05 5.41 Dip tube slipped to 0.37m above plate4 57 1.18 124 61.12 5.485 56.92 1.1 126 61.26 5.628 56.97 1.15 128 61.32 5.68

10 57.01 1.19 130 61.41 5.7715 57.07 1.25 135 61.53 5.8920 57.24 1.42 140 61.68 6.05 Dip tube slipped to 0.36m above plate25 #N/A #N/A 145 61.78 6.1530 58.16 2.4 Dip tube slipped to 0.49m above plate 150 61.87 6.2435 58.2 2.44 155 61.93 6.340 58.34 2.58 160 62 6.3745 58.44 2.68 165 62.06 6.4350 58.54 2.78 171 62.1 6.4760 58.65 2.89 180 62.19 6.56

Step #2 Pumping rate: ~1.5 (L/s) Step #4 Pumping rate: ~1.8 (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)61 58.86 3.1 181 62.26 6.6362 58.98 3.26 Dip tube slipped to 0.45m above plate 182 62.29 6.6663 59.11 3.39 183 62.35 6.73 Dip tube slipped to 0.35m above plate64 59.25 3.53 184 62.37 6.7565 59.34 3.62 186 62.39 6.7768 59.55 3.83 188 62.43 6.8170 59.66 3.96 Dip tube slipped to 0.43m above plate 190 62.47 6.8575 59.94 4.24 195 62.52 6.980 60.14 4.44 200 62.57 6.9585 60.29 4.6 Dip tube slipped to 0.42m above plate 205 62.6 6.9890 60.41 4.72 210 62.64 7.0295 60.53 4.84 215 62.7 7.08

100 60.59 4.9 220 62.71 7.1 Dip tube slipped to 0.34m above plate105 60.65 4.97 Dip tube slipped to 0.41m above plate 225 62.73 7.12110 60.72 5.05 Dip tube slipped to 0.40m above plate 230 62.75 7.14120 60.8 5.15 Dip tube slipped to 0.38m above plate 240 62.78 7.17

Reduced by: SW

STEP DRAWDOWN PUMPING TEST


PUMPING BORE/WELL Date: 23/07/2014

Bore Name/No. Corsair Bore Project No: AB0101-01-03

Discharge Rate (kL/d or L/s)* 1.5L/s Time: 7:30

Static Water Level (m bRP) 55.67 Location: Twin Bonanza Gold Project

Reference Point (m agl) 0.77

Pump inlet depth (m bRP) ~100m OBSERVATION BORE No. M11

Static Water Level (m bRP) 54.91

Recorder's Name: SW/RH/GR Reference Point (m agl) 0.31

Document #: D2.1.2a Distance from pumping bore (m) ~10m

Time Elapsed Time Production Bore Data Observation Bore Data

(mins) Water Level Drawdown Remarks Water Level Drawdown

(m bRP) (m) (mbRP) (m)

7:30:00 0 55.67 0.00 FM (initial) 6799.0kL 54.91 0.00

0.5 58.42 2.75 - 54.93 0.02

1 58.46 2.79 Pressure Adjustment 54.93 0.02

1.5 57.97 2.30 - -

2 57.01 1.34 - 54.93 0.02

2.5 57.03 1.36 - -

3 57.09 1.42 - 54.94 0.03

4 57.18 1.51 90s/100L (1.1L/s) Pressure Adjustment 54.94 0.03

5 57.45 1.78 - 54.94 0.03


7 57.54 1.87 33s/50L (1.5L/s) 54.96 0.05

8 58.08 2.41 33s/50L (1.5L/s) 54.96 0.05

9 58.18 2.51 33s/50L (1.5L/s) 54.97 0.06

10 58.30 2.63 34s/50L (1.5L/s) 54.98 0.07

12 58.53 2.86 33s/50L (1.5L/s) 54.99 0.08

14 58.70 3.03 33s/50L (1.5L/s) 55 0.09

16 58.88 3.21 - 55.01 0.10

18 59.01 3.34 34s/50L (1.5L/s) 55.02 0.11

20 59.15 3.48 - 55.04 0.13

25 59.43 3.76 67s/100L (1.5L/s) 55.07 0.16

30 59.69 4.02 67s/100L (1.5L/s) 55.09 0.18


40 60.05 4.38 67s/100L (1.5L/s) 55.14 0.23

45 60.18 4.51 33s/50L (1.5L/s) 55.16 0.25

50 60.34 4.67 33s/50L (1.5L/s) 55.18 0.27

8:30 60 60.54 4.87 67s/100L (1.5L/s) FM=6804.1 55.22 0.31

70 60.68 5.01 68s/100L (1.5L/s) 55.26 0.35


90 60.92 5.25 33s/50L (1.5L/s) 55.3 0.39

100 61.02 5.35 33s/50L (1.5L/s) 55.32 0.41

9:30 120 61.10 5.43 34s/50L (1.5L/s) 55.36 0.45

140 61.16 5.49 34s/50L (1.5L/s) 55.39 0.48

160 61.21 5.54 68s/100L (1.5L/s) 55.41 0.50

10:30 180 61.23 5.56 68s/100L (1.5L/s) Minor Pressure Adjustment 55.43 0.52

210 61.35 5.68 68s/100L (1.5L/s) 55.45 0.54

11:30 240 61.37 5.70 Rate " FM=6820.1 EC=3233µs/cm @32.7°C 55.47 0.56

270 61.39 5.72 68s/100L (1.5L/s) Minor Pressure Adjustment 55.48 0.57

12:30 300 61.40 5.73 67s/100L (1.5L/s) 55.49 0.58

13:30 360 61.53 5.86 67s/100L (1.5L/s) Minor Pressure Adjustment 55.51 0.60

14:30 420 61.57 5.90 66s/100L (1.5L/s) 55.53 0.62

15:30 480 61.70 6.03 66s/100L (1.5L/s) 55.55 0.64

16:30 540 61.78 6.11 Rate " FM=6846.6 EC=3363µs/cm @33.0°C 55.58 0.67

Reduced by: SW

CONSTANT RATE PUMPING TEST







Pump inlet depth (m bRP) ~100m OBSERVATION BORE No. M11


Recorder's Name: SW/RH/GR Reference Point (m agl) 0.31

Document #: D2.1.2b Distance from pumping bore (m) ~10m




17:30 600 61.8 6.13 - 55.60 0.69

18:30 660 61.78 6.11 67s/100L (1.5L/s) 55.62 0.71

19:45 735 61.86 6.19 - 55.66 0.75

20:30 780 61.89 6.22 67s/100L (1.5L/s) FM=6868.1kL 55.69 0.78

21:30 840 61.93 6.26 67s/100L (1.5L/s) EC= 3428µs/cm @ 30.6°C 55.71 0.80

22:30 900 61.96 6.29 67s/100L (1.5L/s) FM= 6878.8kL 55.73 0.82

0:00 990 62.01 6.34 67s/100L (1.5L/s) EC= 3454µs/cm @ 31.1°C 55.76 0.85

1:30 1080 62.04 6.37 67s/100L (1.5L/s) FM= 6894.7 55.77 0.86

3:00 1170 62.07 6.4 67s/100L (1.5L/s) EC= 3459µs/cm @ 30.5°C 55.79 0.88

4:30 1260 62.14 6.47 67s/100L (1.5L/s) FM=6910.8kL 55.81 0.90

6:00 1350 62.2 6.53 67s/100L (1.5L/s) EC= 3472µs/cm @ 30.6°C 55.84 0.93

7:30 1440 62.29 6.62 66s/100L (1.5L/s) FM= 6927.0kL 55.88 0.97

9:00 1530 62.37 6.7 66s/100L (1.5L/s) EC= 3474µs/cm @ 31.7°C 55.91 1.00

10:30 1620 62.39 6.72 66s/100L (1.5L/s) FM= 6943.3kL 55.94 1.03

12:00 1710 62.37 6.7 66s/100L (1.5L/s) EC= 3510µs/cm @ 32.9°C 55.95 1.04

13:30 1800 62.37 6.7 67s/100L (1.5L/s) FM=6959.6 55.95 1.04

15:00 1890 62.36 6.69 67s/100L EC= 3541µs/cm @ 32.4°C 55.95 1.04

16:30 1980 62.36 6.69 67s/100L (1.5L/s) FM= 6975.6 55.96 1.05

18:00 2070 62.36 6.69 67s/100L (1.5L/s) 3536µS/cm @ 32.1°C 55.98 1.07

19:30 2160 62.37 6.7 67s/100L (1.5L/s) FM= 6990.6 56.01 1.1

21:00 2250 62.43 6.76 67s/100L (1.5L/s) 3549µS/cm @ 30.4°C 56.05 1.14

22:30 2340 62.5 6.83 67s/100L (1.5L/s) FM= 7007.5 56.07 1.16

0:00 2430 62.54 6.87 67s/100L (1.5L/s) 3557µS/cm @ 29.6°C 56.09 1.18

1:30 2520 62.56 6.89 67s/100L (1.5L/s) FM= 7023.6 56.10 1.19

3:00 2610 62.59 6.92 67s/100L (1.5L/s) 3525µS/cm @ 29.5°C 56.11 1.2

4:30 2700 62.62 6.95 67s/100L (1.5L/s) FM= 7039.7 56.13 1.22

6:00 2790 62.68 7.01 67s/100L (1.5L/s) 3560µS/cm @ 29.1°C 56.16 1.25

7:30 2880 62.74 7.07 66s/100L (1.5L/s) FM= 7055.92 56.17 1.26

256.92kL total pumped

1.49L/s average

Reduced by: SW



PUMPING BORE/WELL Date: 25-Jul-14


Discharge Rate (kL/d or L/s)* 1.5L/s Pumping Start Date/Time 23/07/2014 7:30 Time: 7:30

Pumping Duration (mins) 2880 Pumping Stop Date/Time 25/07/2014 7:30 Location: Twin Bonanza Gold Project



Pump inlet depth (m bRP) ~100 M11


Recorder's Name: SW Reference Point (m agl) 0.31

Document #: D2.1.3 Distance from pumping bore (m) ~10m

*Delete as appropriate

Time (t') since Time (t) since Residual Observation Bore Data Observation Bore Data

Time pumping Water Level pumping started t / t' Drawdown Water Level Residual Water Level Residual

stopped (mins) (m) (min) (m) (m bRP) Drawdown (m) (m bRP) Drawdown (m)

7:30 0 62.73 2880 7.06 56.170 1.260

7:31 1 60.53 2881 2881.0 4.86 56.170 1.260

7:32 2 60.63 2883 1441.5 4.96 56.160 1.250

7:33 3 60.55 2886 962.0 4.88 56.160 1.250

7:34 4 60.38 2890 722.5 4.71 56.140 1.230

7:35 5 60.21 2895 579.0 4.54 56.135 1.225

7:36 6 60.06 2901 483.5 4.39 56.130 1.220

7:37 7 59.92 2908 415.4 4.25 56.125 1.215

7:38 8 59.75 2916 364.5 4.08 56.120 1.210

7:39 9 59.65 2925 325.0 3.98 56.110 1.200

7:40 10 59.48 2935 293.5 3.81 56.105 1.195

7:42 12 59.32 2947 245.6 3.65 56.095 1.185

7:45 15 59.04 2962 197.5 3.37 56.080 1.170

7:48 18 58.79 2980 165.6 3.12 56.060 1.150

7:50 20 58.66 3000 150.0 2.99 56.040 1.130

7:55 25 58.34 3025 121.0 2.67 56.010 1.100

8:00 30 58.1 3055 101.8 2.43 55.990 1.080

8:05 35 57.91 3090 88.3 2.24 55.960 1.050

8:10 40 57.76 3130 78.3 2.09 55.940 1.030

8:15 45 57.6 3175 70.6 1.93 55.920 1.010

8:20 50 57.5 3225 64.5 1.83 55.900 0.990

8:30 60 57.35 3285 54.8 1.68 55.890 0.980

8:40 70 57.22 3355 47.9 1.55 55.860 0.950

8:50 80 57.13 3435 42.9 1.46 55.830 0.920

9:00 90 57.06 3525 39.2 1.39 55.810 0.900

9:10 100 56.99 3625 36.3 1.32 55.795 0.885

9:30 120 56.92 3745 31.2 1.25 55.770 0.860

9:50 140 56.86 3885 27.8 1.19 55.740 0.830

10:10 160 56.81 4045 25.3 1.14 55.710 0.800

10:30 180 56.77 4225 23.5 1.1 55.700 0.790

11:00 210 56.74 4435 21.1 1.07 55.675 0.765

11:30 240 56.7 4675 19.5 1.03 55.660 0.75

12:00 270 56.66 4945 18.3 0.99 55.640 0.73

12:30 300 56.63 5245 17.5 0.96 55.625 0.715

13:30 360 56.58 5605 15.6 0.91 55.590 0.68

14:30 420 56.53 6025 14.3 0.86 55.560 0.65

15:30 480 56.49 6505 13.6 0.82 55.540 0.63

16:30 540 56.455 7045 13.0 0.785 55.520 0.61

17:30 600 56.425 7645 12.7 0.755 55.510 0.6

OBSERVATION BORE No.

RECOVERY TEST - CONSTANT RATE PUMPING TEST


PUMPING BORE/WELL No: Wilson's Bore Date: 26/07/2014


Static Water Level (m bRP) 46.19 Recorder's Name: S.W/R.HReference Point (m above plate) 0.235 Time: 0930

Reference Point (m agl) 0.65 Document No.: D2.2.1Pump inlet depth (m bRP) 75

Step #1 Pumping rate: 1 (L/s) Step #3 Pumping rate: ~1.75 (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)1 49.41 3.22 201 65.15 18.962 50.43 4.24 202 65.47 19.283 51 4.81 203 65.98 19.794 51.44 5.25 204 66.40 20.216 52 5.81 206 66.96 20.778 52.37 6.18 208 67.35 21.16

10 52.65 6.46 210 67.78 21.5915 53.01 6.82 215 68.47 22.2820 53.67 7.48 220 68.85 22.66 Gate valve fully open25 54.07 7.88 225 68.98 22.79 1.75L/s30 54.33 8.14 230 69.10 22.91 1.7L/s35 54.53 8.34 235 69.25 23.06 1.6L/s40 54.69 8.5 240 69.34 23.15 1.6L/s45 54.78 8.59 245 69.43 23.24 1.6L/s50 54.9 8.71 250 69.48 23.29 1.6L/s60 55.2 9.01 260 69.61 23.42 1.6L/s70 55.59 9.4 270 69.75 23.56 1.6L/s80 55.75 9.56 280 69.89 23.7 1.6L/s90 56.21 10.02 290 69.96 23.77 1.6L/s

100 56.37 10.18 300 69.97 23.78 1.6L/s

Step #2 Pumping rate: 1.5 (L/s) Step #4 Pumping rate: 1.6 (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)101 56.57 10.38 301102 57.07 10.88 302103 57.45 11.26 303 69.76 23.57104 57.93 11.74 304 69.6 23.41106 58.85 12.66 306 69.5 23.31108 59.49 13.3 308 69.48 23.29110 60.02 13.83 310 69.45 23.26115 60.93 14.74 315 69.42 23.23120 61.4 15.21 320 69.45 23.26125 62.01 15.82 325 69.51 23.32130 62.43 16.24 330 69.51 23.32135 62.66 16.47 335140 62.89 16.7 340145 63.06 16.87 345150 63.27 17.08 350161 63.43 17.24 360170 63.75 17.56 370180 64.27 18.08 380190 64.67 18.48 390200 64.82 18.63 400

Reduced by: SW




Bore Name/No. Wilson's Bore Project No: AB0101-01-03




Pump inlet depth (m bRP) ~75m OBSERVATION BORE No. M10A


Recorder's Name: SW/RH Reference Point (m agl) 0.57

Document #: D2.2.2a Distance from pumping bore (m) ~10




7:30:00 0 45.67 0.00 FM: 7086.83kL 46.43 0.00

0.5

1 46.55 0.88 Flow Rate 19s/50L (2.63L/s)

1.5

2 51.96 6.29

2.5

3 54.08 8.41 Flow Rate 33s/50L (1.52L/s)

4 54.49 8.82

5 Flow Rate 34s/50L (1.47L/s) 46.44 0.01

6 55.18 9.51

7 55.58 9.91

8 56.23 10.56

9 56.76 11.09

10 Flow Rate 32s/50L (1.56L/s) 46.51 0.08

12 57.70 12.03

14 58.09 12.42 46.57 0.14

16 58.48 12.81 46.62 0.19

18 58.78 13.11 46.66 0.23

20 59.04 13.37 Flow Rate 32s/50L (1.56L/s) 46.71 0.28

25 59.54 13.87 46.85 0.42

30 59.90 14.23 FM: 7089.65kL 47.04 0.61

35 60.28 14.61 Flow Rate 66s/100L (1.52L/s) 47.2 0.77

40 60.84 15.17 47.36 0.93

45 61.15 15.48 47.5 1.07

50 61.64 15.97 47.65 1.22

8:30 60 62.35 16.68 Flow Rate 67s/100L (1.49L/s) 47.93 1.50

70 62.79 17.12 48.21 1.78

80 63.02 17.35 48.49 2.06

90 63.69 18.02 48.73 2.30

101 64.24 18.57 49 2.57

9:30 120 64.57 18.90 Flow Rate 69s/100L (1.45L/s) 49.44 3.01

140 65.25 19.58 49.88 3.45

160 65.58 19.91 50.21 3.78

10:30 180 66.06 20.39 Flow Rate 70s/100L (1.43L/s); adjustment to 1.47L/s 50.55 4.12

210 66.60 20.93 1.41L/s ---adjustment to 1.49L/s 50.95 4.52

11:30 240 67.38 21.71 1.43L/s ---adjustment to 1.49L/s 51.34 4.91

270 68.01 22.34 1.43L/s ---adjustment to 1.49L/s 51.68 5.25

12:30 300 68.57 22.90 1.43L/s ---adjustment to 1.49L/s 51.97 5.54

13:30 360 69.81 24.14 EC 12.7mS/cm @25C; Temp 28.9C 52.54 6.11

14:30 420 71.55 25.88 at 390mins gate valve fully open (1.45L/s) 53.01 6.58

473 69.32 23.65 Rate reduced to 1.2L/s (adjustments 424-473mins)

474

475 69.20 23.53

476 53.37 6.94

477 69.05 23.38

478 69.00 23.33

479 68.96 23.29

15:30 480 68.92 23.25 Flow Rate 82s/100L (1.22L/s) 53.38 6.95

500 67.96 22.29 53.42 6.99

520 67.58 21.91 53.42 6.99

16:30 540 67.55 21.88 53.43 7.00

560 67.54 21.87 53.44 7.01

580 67.61 21.94 Flow Rate 83s/100L (1.20L/s) 53.45 7.02

Reduced by: SW








Pump inlet depth (m bRP) ~75m OBSERVATION BORE No. M10A



Document #: D2.2.2b Distance from pumping bore (m) ~10

Time Elapsed Time Elapsed Time Production Bore Data Observation Bore Data

(mins) (hr:min) Water Level Drawdown Remarks Water Level Drawdown


17:30 600 10:00 67.57 21.90 Flow Rate 84s/100L (1.20L/s) 53.48 7.05

620 10:20 67.61 21.94 53.51 7.08

640 10:40 67.64 21.97 53.54 7.11

18:30 660 11:00 67.72 22.05 EC 12.7mS/cm @25C; Temp 30.5C 53.58 7.15

19:45 720 12:00 67.80 22.13 53.69 7.26

20:30 780 13:00 68.29 22.62 53.83 7.40

21:30 840 14:00 68.56 22.89 54.00 7.57

22:30 900 15:00 68.98 23.31 54.17 7.74

0:00 990 16:30 69.41 23.74 54.42 7.99

1:30 1080 18:00 69.68 24.01 54.64 8.21

3:00 1170 19:30 70.50 24.83 EC 12.4mS/cm @25C; Temp 30.1C 54.86 8.43

4:30 1260 21:00 71.55 25.88 55.09 8.66

6:00 1350 22:30 72.70 27.03 Flow Rate 84s/100L (1.20L/s) 55.34 8.91

6:50 1400 23:20 73.00 27.33

7:00 1410 23:30 71.90 26.23 Rate changed to 1L/s

7:10 1420 23:40 71.23 25.56

7:20 1430 23:50 70.15 24.48

7:30 1440 24:00 69.21 23.54 55.52 9.09

7:40 1450 24:10 69.45 23.78

7:50 1460 24:20 69.03 23.36

8:00 1470 24:30 68.47 22.80

8:10 1480 24:40 68.12 22.45

8:20 1490 24:50 67.93 22.26

8:30 1500 25:00 67.74 22.07

8:40 1510 25:10 67.61 21.94

9:00 1530 25:30 67.69 22.02 55.34 8.91

9:30 1560 26:00 67.42 21.75

10:00 1590 26:30 67.40 21.73

10:30 1620 27:00 67.26 21.59 55.19 8.76

11:00 1650 27:30 67.46 21.79

11:30 1680 28:00 67.46 21.79

12:00 1710 28:30 67.51 21.84 55.17 8.74

13:30 1800 30:00 67.63 21.96 55.20 8.77

15:00 1890 31:30 67.68 22.01 55.24 8.81

16:30 1980 33:00 67.76 22.09 55.28 8.85

18:00 2070 34:30 67.77 22.10 55.33 8.90

19:30 2160 36:00 67.83 22.16 EC 12.6mS/cm @25C; Temp 30.6C 55.37 8.94

21:00 2250 37:30 68.37 22.70 55.49 9.06

22:30 2340 39:00 68.46 22.79 55.60 9.17

0:00 2430 40:30 68.64 22.97 55.71 9.28

1:30 2520 42:00 68.79 23.12 55.81 9.38

3:00 2610 43:30 68.91 23.24 55.90 9.47

4:30 2700 45:00 69.02 23.35 55.97 9.54

6:00 2790 46:30 69.41 23.74 56.06 9.63

7:30 2880 48:00 69.70 24.03 EC 12.3mS/cm @25C; Temp 30.6C 56.16 9.73

FM: 7280.7kL

Total pumped: 193.87kL (average flow rate: 97kL/d)

Reduced by: SW



PUMPING BORE/WELL Date: 29-Jul-14


Discharge Rate (kL/d or L/s)* 1.5, 1.2, 1.0 L/s Pumping Start Date/Time 27/07/2014 7:30 Time: 7:30




Pump inlet depth (m bRP) ~75 M10A


Recorder's Name: RH Reference Point (m agl) 0.57

Document #: NA Distance from pumping bore (m) ~10





7:30 0 69.7 2880 2880.0 23.15 56.220 9.730

7:31 1 67.49 2881 2881.0 20.94 56.220 9.730

7:32 2 65.07 2883 1441.5 18.52 56.220 9.730

7:33 3 63.53 2886 962.0 16.98 56.220 9.730

7:34 4 62.66 2890 722.5 16.11 56.220 9.730

7:35 5 61.79 2895 579.0 15.24 56.215 9.725

7:36 6 61.22 2901 483.5 14.67 56.210 9.720

7:37 7 2908 56.205 9.715

7:38 8 60.37 2916 364.5 13.82 56.205 9.715

7:39 9 60.03 2925 325.0 13.48 56.200 9.710

7:40 10 59.72 2935 293.5 13.17 56.195 9.705

7:42 12 59.3 2947 245.6 12.75 56.180 9.690

7:45 15 58.85 2962 197.5 12.3 56.150 9.660

7:48 18 58.56 2980 165.6 12.01 56.120 9.630

7:50 20 58.41 3000 150.0 11.86 56.100 9.610

7:55 25 58.13 3025 121.0 11.58 56.040 9.550

8:00 30 57.9 3055 101.8 11.35 55.960 9.470

8:05 35 57.72 3090 88.3 11.17 55.900 9.410

8:10 40 57.54 3130 78.3 10.99 55.820 9.330

8:15 45 57.36 3175 70.6 10.81 55.730 9.240

8:20 50 57.21 3225 64.5 10.66 55.650 9.160

8:30 60 56.93 3285 54.8 10.38 55.490 9.060

8:40 70 56.68 3355 47.9 10.13 55.330 8.900

8:50 80 56.49 3435 42.9 9.94 55.180 8.750

9:00 90 56.28 3525 39.2 9.73 55.030 8.600

9:10 100 56.11 3625 36.3 9.56 54.890 8.460

9:30 120 55.81 3745 31.2 9.26 54.610 8.180

9:50 140 55.54 3885 27.8 8.99 54.350 7.860

10:10 160 55.3 4045 25.3 8.75 54.120 7.630

10:30 180 55.09 4225 23.5 8.54 53.910 7.420

11:00 210 54.79 4435 21.1 8.24 53.630 7.140

11:30 240 54.51 4675 19.5 7.96 53.390 6.900

12:00 270 54.26 4945 18.3 7.71 53.160 6.670

12:30 300 54.01 5245 17.5 7.46 52.950 6.460

13:30 360 53.38 5605 15.6 6.83 52.590 6.100

14:30 420 52.98 6025 14.3 6.43 52.270 5.780

15:30 480 52.64 6505 13.6 6.09 51.980 5.490

16:30 540 52.34 7045 13.0 5.79 51.730 5.240

17:30 600 52.1 7645 12.7 5.55 51.490 5.000

7:00 1410 49.98 9055 6.4 3.43 49.780 3.290




PUMPING BORE/WELL No: Strezza's/Timmy's Bore 2 Date: 31/07/2014


Static Water Level (m bRP) 4.01 Recorder's Name: S.W/R.HReference Point (m above plate) 0.21 Time: 8:00

Reference Point (m agl) 0.98 Document No.: D2.3.1Pump inlet depth (m bRP) ~36m

Step #1 Pumping rate: 3 (L/s) Step #3 Pumping rate: 5 (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)1 4.54 0.53 30s/100L 121 4.96 0.95 20s/100L2 4.55 0.54 33s/100L 122 4.97 0.96 20s/100L3 4.55 0.54 33s/100L 123 4.97 0.96 20s/100L4 4.56 0.55 33s/100L 124 4.975 0.965 20s/100L6 4.56 0.55 33s/100L 126 4.975 0.965 20s/100L8 4.56 0.55 33s/100L 128 4.975 0.965 20s/100L

10 4.56 0.55 33s/100L 130 4.975 0.965 20s/100L15 4.56 0.55 33s/100L 135 4.975 0.965 20s/100L20 4.56 0.55 33s/100L 140 4.975 0.965 20s/100L25 4.56 0.55 33s/100L 145 4.975 0.965 20s/100L30 4.56 0.55 33s/100L 150 4.975 0.965 20s/100L35 4.56 0.55 33s/100L 155 4.975 0.965 20s/100L40 4.56 0.55 33s/100L 160 4.98 0.97 20s/100L45 4.56 0.55 33s/100L 165 4.98 0.97 20s/100L50 4.56 0.55 33s/100L 170 4.98 0.97 20s/100L60 4.56 0.55 33s/100L 180 4.98 0.97 20s/100L

Step #2 Pumping rate: 4 (L/s) Step #4 Pumping rate: Max 5.8L/s (L/s)Elapsed Time Water Level Drawdown Remarks Elapsed Time Water Level Drawdown Remarks

(mins) (m bRP) (m) (mins) (m bRP) (m)61 4.72 0.71 26s/100L 181 5.24 1.23 17s/100L62 4.74 0.73 26s/100L 182 5.24 1.23 17s/100L63 4.76 0.75 25s/100L 183 5.24 1.23 17s/100L64 4.76 0.75 25s/100L 184 5.24 1.23 17s/100L66 4.76 0.75 25s/100L 186 5.24 1.23 17s/100L68 4.76 0.75 25s/100L 188 5.24 1.23 17s/100L70 4.76 0.75 25s/100L 190 5.24 1.23 17s/100L75 4.76 0.75 25s/100L 195 5.24 1.23 17s/100L80 4.76 0.75 25s/100L 200 5.24 1.23 17s/100L85 4.76 0.75 25s/100L 205 5.24 1.23 17s/100L90 4.76 0.75 25s/100L 210 5.24 1.23 17s/100L95 4.76 0.75 25s/100L 215 5.24 1.23 17s/100L100 4.76 0.75 25s/100L 220 5.24 1.23 17s/100L105 4.76 0.75 25s/100L 225 5.24 1.23 17s/100L110 4.76 0.75 25s/100L 230 5.24 1.23 17s/100L120 4.76 0.75 25s/100L 240 5.24 1.23 17s/100L

Reduced by: SW




Bore Name/No.Strezza's/ Timmy's Bore 2 Project No: AB0101-01-03

Discharge Rate (kL/d or L/s)* 5L/s Time: 7:30



Pump inlet depth (m bRP) 37 OBSERVATION BORE No. BF03A



Document #: D2.3.2a Distance from pumping bore (m) 7.3




7:30:00 0 4.010 0.000 FM: 20726.08kL

0.5

1 5.020 1.010 18s/100L [5.6L/s] - adjusted

1.5

2 4.900 0.890 19s/100L [5.26L/s] - adjusted

2.5

3 4.880 0.870 20s/100L (5L/s)

4 4.880 0.870 " 3.410 0.110

5 4.880 0.870 "

6 4.890 0.880 " 3.420 0.120

7 4.890 0.880 "

8 4.895 0.885 " 3.420 0.120

9 4.900 0.890 "

10 4.930 0.920 " 3.430 0.130

12 4.940 0.930 " 3.435 0.135

14 4.940 0.930 " 3.440 0.140

16 4.940 0.930 " 3.440 0.140

18 4.940 0.930 " 3.445 0.145

20 4.940 0.930 " 3.450 0.150

25 4.940 0.930 " 3.460 0.160

30 4.950 0.940 " 3.460 0.160

35 4.955 0.945 " 3.460 0.160

40 4.960 0.950 " 3.465 0.165

45 4.960 0.950 " 3.465 0.165

50 4.970 0.960 " 3.470 0.170

8:30 60 4.970 0.960 " 3.475 0.175

70 4.970 0.960 " 3.480 0.180

80 4.970 0.960 " 3.490 0.190

90 4.975 0.965 " 3.490 0.190

100 4.980 0.970 " 3.495 0.195

9:30 120 4.980 0.970 " 3.500 0.200

140 4.980 0.970 205s/kL [4.88L/s] (small adjustment) 3.510 0.210

160 5.000 0.990 203s/kL [4.93L/s] 3.525 0.225

10:30 180 5.000 0.990 203s/kL [4.93L/s] 3.530 0.230

210 5.000 0.990 203s/kL [4.93L/s] 3.530 0.230

11:30 240 5.000 0.990 204s/kL [4.90L/s] (small adjustment to 200kPA) 3.530 0.230

270 5.010 1.000 202s/kL [4.95L/s] 3.530 0.230

12:30 300 5.010 1.000 202s/kL 773µs/cm @25C; Temp 29.7°C 3.530 0.230

13:30 360 5.010 1.000 203s/kL (small adjustment) FM=20832.36 3.530 0.230

14:30 420 5.015 1.005 201s/kL [4.98L/s] 3.530 0.230

15:30 480 5.015 1.005 201s/kL 626µs/cm @ 25C; Temp 29.6°C 3.530 0.230

16:30 540 5.020 1.010 201s/kL FM=20886.0 3.535 0.235

Reduced by: SW





Discharge Rate (kL/d or L/s)* 5L/s Time: 7:30



Pump inlet depth (m bRP) 37 OBSERVATION BORE No. BF03A



Document #: D2.3.2b Distance from pumping bore (m) 7.3

Time Elapsed Time Elapsed Time Production Bore Data Observation Bore Data

(mins) (hr:min) Water Level Drawdown Remarks Water Level Drawdown


17:30 600 10:00 5.025 1.015 200s/kL 3.545 0.245

18:30 660 11:00 5.030 1.020 201/kL 531µs/cm @25C; Temp 29.1°C 3.560 0.260

20:00 750 12:30 5.050 1.040 201/kL 3.580 0.280

20:30 780 13:00 5.060 1.050 FM=20957.5 3.590 0.290

21:30 840 14:00 5.060 1.050 200s/kL 578µs/cm @25C; Temp 29.4°C 3.590 0.290

22:30 900 15:00 5.070 1.060 200s/kL 3.595 0.295

0:00 990 16:30 5.070 1.060 200s/kL 3.600 0.300

1:30 1080 18:00 5.070 1.060 200s/kL 542µs/cm @25C; Temp 28.1°C 3.600 0.300

3:00 1170 19:30 5.070 1.060 200s/kL FM=21074.2 3.600 0.300

4:30 1260 21:00 5.070 1.060 200s/kL 3.610 0.310

6:00 1350 22:30 5.080 1.070 200s/kL 513µs/cm @25C; Temp 28.1°C 3.615 0.315

7:30 1440 24:00 5.090 1.080 200s/kL FM=21155 3.630 0.330

9:00 1530 25:30 5.105 1.095 199s/kL (adjusted pressure up @8am, was 198s) 3.645 0.345

10:30 1620 27:00 5.110 1.100 199s/kL 475µs/cm @28.7°C 3.645 0.345

12:00 1710 28:30 5.110 1.100 200s/kL FM=21236.0 3.645 0.345

13:30 1800 30:00 5.100 1.090 200s/kL 3.640 0.340

15:00 1890 31:30 5.090 1.080 200s/kL 417µs/cm @25C; Temp 29.4°C 3.630 0.330

16:30 1980 33:00 5.090 1.080 201s/kL 3.630 0.330

18:00 2070 34:30 5.080 1.070 201s/kL FM=21343.6 3.630 0.330

19:50 2180 36:20 5.090 1.080 200s/kL 3.655 0.355

21:00 2250 37:30 5.090 1.080 200s/kL 399µS/cm @25C; Temp 28.2°C 3.670 0.370

22:30 2340 39:00 5.100 1.090 200s/kL 3.670 0.370

0:00 2430 40:30 5.100 1.090 200s/kL FM=21451.2 3.680 0.380

1:30 2520 42:00 5.100 1.090 200s/kL 407µS/cm @25C; Temp 27.7°C 3.670 0.370

3:00 2610 43:30 5.100 1.090 200s/kL 3.670 0.370

4:30 2700 45:00 5.100 1.090 200s/kL FM=21532.4 3.670 0.370

6:00 2790 46:30 5.110 1.100 200s/kL 409µS/cm @25C; Temp 26.7°C 3.675 0.375

7:30 2880 48:00 5.115 1.105 200s/kL 3.685 0.385

FINAL FM=21586.5kL

Total Pumped = 860.42kL (av 4.98L/s)

Reduced by: SW




Observation Bore Data Sheet

PUMPING BORE/WELL No. Strezza's/Timmy's Bore 2 Date: 1/08/2014

Discharge Rate (kL/d or L/s)* 5L/s Project No: AB0101-01-03

Recorders Name: SW Time: 7:30

Document #: D2.3.2c Location: Twin Bonanza Gold Project

NOTE: SWL = Static Water Level (m bRP) RP = reference point (m agl) Dist. = linear distance from pumping bore

OBS BORE No. BF01 OBS BORE No. BF02 OBS BORE No. BF04 OBS BORE No.SWL 3.66 SWL 3.33 SWL 3.63 SWL

RP 0.5 RP 0.45 RP 0.69 RP

Dist. 1064 Dist. 232 Dist. 204 Dist.

Time Elapsed Water Level Drawdown Time Elapsed Water Level Drawdown Time Elapsed Water Level Drawdown Time Elapsed Water Level Drawdown

(mins) (m bRP) (m) (mins) (m bRP) (m) (mins) (m bRP) (m) (mins) (m bRP) (m)

7:31 1 3.660 0.000 7:31 1 3.660 0.000 7:31 1 3.660 0.000

10:48 198 3.660 0.000 10:00 150 3.360 0.030 9:40 130 3.650 0.020

14:24 414 3.660 0.000 11:05 215 3.365 0.035 11:00 210 3.660 0.030

16:15 525 3.620 -0.040 12:15 285 3.360 0.030 12:10 280 3.660 0.030

20:50 800 3.650 -0.010 13:50 380 3.350 0.020 13:40 370 3.650 0.020

0:22 1012 3.650 -0.010 16:10 520 3.350 0.020 16:05 515 3.640 0.010

4:52 1282 3.650 -0.010 17:50 620 3.350 0.020 17:40 610 3.640 0.010

8:25 1495 3.670 0.010 20:42 792 3.385 0.055 20:36 786 3.67 0.040

11:10 1660 3.675 0.015 0:15 1005 3.400 0.070 0:10 1000 3.68 0.050

14:10 1840 3.650 -0.010 4:47 1277 3.400 0.070 4:42 1272 3.68 0.050

17:10 2020 3.650 -0.010 8:10 1480 3.420 0.090 8:00 1470 3.700 0.070

21:19 2269 3.670 0.010 11:00 1650 3.435 0.105 10:55 1645 3.720 0.090

0:12 2442 3.680 0.020 14:05 1835 3.420 0.090 14:00 1830 3.700 0.070

4:50 2720 3.680 0.020 17:05 2015 3.415 0.085 17:00 2010 3.690 0.060

6:54 2844 3.680 0.020 21:13 2263 3.450 0.120 21:08 2258 3.730 0.100

0:07 2437 3.460 0.130 0:04 2434 3.740 0.110

4:44 2714 3.460 0.130 4:39 2709 3.730 0.100

7:00 2850 3.465 0.135 7:03 2853 3.740 0.110

Reduced by: SW


PUMPING BORE/WELL Date: 3-Aug-14


Discharge Rate (kL/d or L/s)* 5L/s Pumping Start Date/Time 1/08/2014 7:30 Time: 7:30




Pump inlet depth (m bRP) ~37 BF03A


Recorder's Name: SW Reference Point (m agl) 0.31

Document #: D2.3.3 Distance from pumping bore (m) 7.3





7:30 0 5.115 2880 2880.0 1.11 3.685 0.385

7:31 1 4.33 2881 2881.0 0.32 3.590 0.290

7:32 2 4.31 2883 1441.5 0.30 3.580 0.280

7:33 3 4.32 2886 962.0 0.31 3.575 0.275

7:34 4 4.31 2890 722.5 0.30 3.570 0.270

7:35 5 4.31 2895 579.0 0.30 3.570 0.270

7:36 6 4.31 2901 483.5 0.30 3.570 0.270

7:37 7 4.31 2908 415.4 0.30 3.565 0.265

7:38 8 4.31 2916 364.5 0.30 3.560 0.260

7:39 9 4.31 2925 325.0 0.30 3.560 0.260

7:40 10 4.31 2935 293.5 0.30 3.560 0.260

7:42 12 4.3 2947 245.6 0.29 3.550 0.250

7:45 15 4.3 2962 197.5 0.29 3.550 0.250

7:48 18 4.29 2980 165.6 0.28 3.545 0.245

7:50 20 4.29 3000 150.0 0.28 3.545 0.245

7:55 25 4.28 3025 121.0 0.27 3.545 0.245

8:00 30 4.27 3055 101.8 0.26 3.540 0.240

8:05 35 4.27 3090 88.3 0.26 3.535 0.235

8:10 40 4.27 3130 78.3 0.26 3.535 0.235

8:15 45 4.26 3175 70.6 0.25 3.530 0.230

8:20 50 4.255 3225 64.5 0.25 3.530 0.230

8:30 60 4.25 3285 54.8 0.24 3.520 0.220

8:40 70 4.245 3355 47.9 0.24 3.515 0.215

8:50 80 4.24 3435 42.9 0.23 3.510 0.210

9:00 90 4.235 3525 39.2 0.23 3.510 0.210

9:10 100 4.235 3625 36.3 0.23 3.505 0.205

9:30 120 4.23 3745 31.2 0.22 3.500 0.200

9:50 140 4.225 3885 27.8 0.22 3.500 0.200

10:10 160 4.225 4045 25.3 0.22 3.495 0.195

10:30 180 4.22 4225 23.5 0.21 3.490 0.190

11:00 210 4.21 4435 21.1 0.20 3.485 0.185

11:30 240 4.205 4675 19.5 0.20 3.480 0.18

12:00 270 4.2 4945 18.3 0.19 3.470 0.17

12:30 300 4.19 5245 17.5 0.18 3.460 0.16

13:30 360 4.17 5605 15.6 0.16 3.440 0.14

14:30 420 4.16 6025 14.3 0.15 3.430 0.13

15:30 480 6505 13.6

16:30 540 4.14 7045 13.0 0.13 3.410 0.11

17:30 600 7645 12.7

7:00 1410 4.15 9055 6.4 0.14 3.420 0.12





ABM Resources NL


APPENDIX E

Analytical Laboratory Reports

False

7 7.00True Environmental

CERTIFICATE OF ANALYSISWork Order : EP1405966 Page : 1 of 7

:: LaboratoryClient Environmental Division PerthABM RESOURCES NL

: :ContactContact SHAUN WIMBRIDGE Scott James

:: AddressAddress level 1, 141 Broadway

Nedlands - Perth Perth Western Australia 6009

10 Hod Way Malaga WA Australia 6090

:: E-mailE-mail ---- [email protected]

:: TelephoneTelephone +61 08 9423 9777 +61-8-9209 7655

:: FacsimileFacsimile ---- +61-8-9209 7600

:Project TWIN BONANZA GOLD PROJECT QC Level : NEPM 2013 Schedule B(3) and ALS QCS3 requirement

:Order number ----

:C-O-C number ---- Date Samples Received : 31-JUL-2014

Sampler : RH Issue Date : 12-AUG-2014

Site : ----

4:No. of samples received

Quote number : EP/268/14 V4 4:No. of samples analysed

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. All pages of this report have been checked and approved for

release.

This Certificate of Analysis contains the following information:

l General Comments

l Analytical Results

l Surrogate Control Limits

NATA Accredited Laboratory 825

Accredited for compliance with

ISO/IEC 17025.

SignatoriesThis document has been electronically signed by the authorized signatories indicated below. Electronic signing has been

carried out in compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Agnes Szilagyi Perth OrganicsSenior Organic Chemist

Canhuang Ke Perth InorganicsMetals Instrument Chemist

Chas Tucker Perth InorganicsSenior Inorganic Chemist

Di-An Dao Sydney Inorganics

Efua Wilson Perth InorganicsMetals Chemist

Rassem Ayoubi Perth OrganicsSenior Organic Chemist

Environmental Division Perth ABN 84 009 936 029 Part of the ALS Group An ALS Limited Company

Address 10 Hod Way Malaga WA Australia 6090 | PHONE +61-8-9209 7655 | Facsimile +61-8-9209 7600

2 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL

TWIN BONANZA GOLD PROJECT:Project

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

Key :

EG020: Metals LOR for particular sample(s) raised due to high TDS contentl

EK067G (Total Phosphorus): LOR raised due to possible sample matrix interference.l

3 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL


Analytical Results

----M07M09M06M05Client sample IDSub-Matrix: WATER (Matrix: WATER)

----30-JUL-2014 15:3030-JUL-2014 13:1030-JUL-2014 11:0030-JUL-2014 09:30Client sampling date / time

----EP1405966-004EP1405966-003EP1405966-002EP1405966-001UnitLORCAS NumberCompound

EA005P: pH by PC Titrator

pH Value 7.517.94 6.02 7.49 ----pH Unit0.01----

EA010P: Conductivity by PC Titrator

Electrical Conductivity @ 25°C 2940013900 12600 7640 ----µS/cm1----

EA015: Total Dissolved Solids

Total Dissolved Solids @180°C 204008800 8470 4880 ----mg/L10----

ED037P: Alkalinity by PC Titrator

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

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

Bicarbonate Alkalinity as CaCO3 261299 219 289 ----mg/L171-52-3

Total Alkalinity as CaCO3 261299 219 289 ----mg/L1----

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

Sulfate as SO4 - Turbidimetric 46601870 2060 1060 ----mg/L114808-79-8

ED045G: Chloride Discrete analyser

Chloride 85903630 3400 1820 ----mg/L116887-00-6

ED093F: Dissolved Major Cations

Calcium 737357 474 474 ----mg/L17440-70-2

Magnesium 1160480 460 337 ----mg/L17439-95-4

Sodium 49302270 2030 711 ----mg/L17440-23-5

Potassium 234135 130 83 ----mg/L17440-09-7

EG020F: Dissolved Metals by ICP-MS

Aluminium <0.020.02 0.36 <0.01 ----mg/L0.017429-90-5

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

Arsenic <0.0020.004 0.243 0.092 ----mg/L0.0017440-38-2

Boron 0.241.44 0.97 0.70 ----mg/L0.057440-42-8

Barium 0.0470.028 0.055 0.057 ----mg/L0.0017440-39-3

Beryllium <0.002<0.001 <0.001 <0.001 ----mg/L0.0017440-41-7

Cadmium <0.0002<0.0001 0.0010 <0.0001 ----mg/L0.00017440-43-9

Cobalt 0.0080.001 0.037 0.037 ----mg/L0.0017440-48-4

Chromium <0.002<0.001 0.003 <0.001 ----mg/L0.0017440-47-3

Copper 0.0150.009 0.030 0.005 ----mg/L0.0017440-50-8

Manganese 1.320.106 1.93 0.877 ----mg/L0.0017439-96-5

Nickel 0.0070.003 0.062 0.008 ----mg/L0.0017440-02-0

Lead <0.002<0.001 0.009 <0.001 ----mg/L0.0017439-92-1

4 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL


Analytical Results




EG020F: Dissolved Metals by ICP-MS - Continued

Selenium <0.02<0.01 0.02 0.01 ----mg/L0.017782-49-2

Vanadium <0.02<0.01 0.02 <0.01 ----mg/L0.017440-62-2

Zinc 0.1660.045 2.54 1.33 ----mg/L0.0057440-66-6

Uranium 0.0800.058 0.007 0.180 ----mg/L0.0017440-61-1

EG035F: Dissolved Mercury by FIMS

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

EK025SF: Free CN by Segmented Flow Analyser

Free Cyanide <0.004<0.004 <0.004 <0.004 ----mg/L0.004----

EK026SF: Total CN by Segmented Flow Analyser

Total Cyanide <0.004<0.004 <0.004 <0.004 ----mg/L0.00457-12-5

EK028SF: Weak Acid Dissociable CN by Segmented Flow Analyser

Weak Acid Dissociable Cyanide <0.004<0.004 <0.004 <0.004 ----mg/L0.004----

EK040P: Fluoride by PC Titrator

Fluoride 7.35.8 2.8 4.4 ----mg/L0.116984-48-8

EK055G: Ammonia as N by Discrete Analyser

Ammonia as N 0.040.09 172 0.59 ----mg/L0.017664-41-7

EK057G: Nitrite as N by Discrete Analyser

Nitrite as N <0.010.04 <0.01 0.40 ----mg/L0.01----

EK058G: Nitrate as N by Discrete Analyser

Nitrate as N 0.045.83 0.41 27.0 ----mg/L0.0114797-55-8

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

Nitrite + Nitrate as N 0.045.68 0.41 27.4 ----mg/L0.01----

EK061G: Total Kjeldahl Nitrogen By Discrete Analyser

Total Kjeldahl Nitrogen as N 1.42.1 225 9.4 ----mg/L0.1----

EK062G: Total Nitrogen as N (TKN + NOx) by Discrete Analyser^ Total Nitrogen as N 1.411.5 225 36.8 ----mg/L0.1----

EK067G: Total Phosphorus as P by Discrete Analyser

Total Phosphorus as P 0.36<0.05 77.5 <0.20 ----mg/L0.01----

EK071G: Reactive Phosphorus as P by discrete analyser

Reactive Phosphorus as P 0.02<0.01 66.1 0.10 ----mg/L0.0114265-44-2

EN055: Ionic Balance

Total Anions 344147 143 79.2 ----meq/L0.01----

Total Cations 353160 153 84.4 ----meq/L0.01----

5 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL


Analytical Results




EN055: Ionic Balance - Continued

Ionic Balance 1.163.97 3.36 3.22 ----%0.01----

EP002: Dissolved Organic Carbon (DOC)

Dissolved Organic Carbon 58 4570 15 ----mg/L1----

EP005: Total Organic Carbon (TOC)

Total Organic Carbon 58 4670 15 ----mg/L1----

EP026SP: Chemical Oxygen Demand (Spectrophotometric)

Chemical Oxygen Demand 110122 15000 56 ----mg/L10----

EP080/071: Total Petroleum Hydrocarbons

C6 - C9 Fraction <20<20 2000 <20 ----µg/L20----

C10 - C14 Fraction 60100 ---- 180 ----µg/L50----

C15 - C28 Fraction 210<100 ---- 360 ----µg/L100----

C29 - C36 Fraction 11060 ---- 390 ----µg/L50----

^ C10 - C36 Fraction (sum) 380160 ---- 930 ----µg/L50----

EP080/071: Total Recoverable Hydrocarbons - NEPM 2013

C6 - C10 Fraction <20<20 3580 <20 ----µg/L20C6_C10

^ C6 - C10 Fraction minus BTEX

(F1)

<20<20 3570 <20 ----µg/L20C6_C10-BTEX

>C10 - C16 Fraction <100<100 ---- 160 ----µg/L100>C10_C16

>C16 - C34 Fraction 280130 ---- 610 ----µg/L100----

>C34 - C40 Fraction 100<100 ---- 390 ----µg/L100----

^ >C10 - C40 Fraction (sum) 380130 ---- 1160 ----µg/L100----

^ >C10 - C16 Fraction minus Naphthalene

(F2)

<100<100 ---- 160 ----µg/L100----

EP080: BTEXN

Benzene <1<1 <1 <1 ----µg/L171-43-2

Toluene <2<2 14 <2 ----µg/L2108-88-3

Ethylbenzene <2<2 <2 <2 ----µg/L2100-41-4

meta- & para-Xylene <2<2 <2 <2 ----µg/L2108-38-3 106-42-3

ortho-Xylene <2<2 <2 <2 ----µg/L295-47-6

^ Total Xylenes <2<2 <2 <2 ----µg/L21330-20-7

^ Sum of BTEX <1<1 14 <1 ----µg/L1----

Naphthalene <5<5 <5 <5 ----µg/L591-20-3

EP080S: TPH(V)/BTEX Surrogates

1.2-Dichloroethane-D4 91.284.9 88.3 79.0 ----%0.117060-07-0

6 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL


Analytical Results




EP080S: TPH(V)/BTEX Surrogates - Continued

Toluene-D8 104106 123 104 ----%0.12037-26-5

4-Bromofluorobenzene 103104 104 104 ----%0.1460-00-4

7 of 7:Page

Work Order :

:Client

EP1405966

ABM RESOURCES NL


Surrogate Control Limits

Recovery Limits (%)Sub-Matrix: WATER

Compound CAS Number Low High


1.2-Dichloroethane-D4 17060-07-0 60.5 141.2

Toluene-D8 2037-26-5 73.4 126

4-Bromofluorobenzene 460-00-4 59.6 125.3

False

8 8.00False Environmental

CERTIFICATE OF ANALYSISWork Order : EP1406069 Page : 1 of 11

:: LaboratoryClient Environmental Division PerthABM RESOURCES NL

: :ContactContact SHAUN WIMBRIDGE Scott James

:: AddressAddress level 1, 141 Broadway

Nedlands - Perth Perth Western Australia 6009

10 Hod Way Malaga WA Australia 6090

:: E-mailE-mail ---- [email protected]

:: TelephoneTelephone +61 08 9423 9777 +61-8-9209 7655

:: FacsimileFacsimile ---- +61-8-9209 7600

:Project TWIN BONANZA GOLD PROJECT QC Level : NEPM 2013 Schedule B(3) and ALS QCS3 requirement

:Order number ----

:C-O-C number ---- Date Samples Received : 05-AUG-2014

Sampler : R.H Issue Date : 15-AUG-2014

Site : ----

10:No. of samples received

Quote number : EP/268/14 V4 10:No. of samples analysed

This report supersedes any previous report(s) with this reference. Results apply to the sample(s) as submitted. All pages of this report have been checked and approved for

release.

This Certificate of Analysis contains the following information:

l General Comments

l Analytical Results

l Surrogate Control Limits

Environmental Division Perth ABN 84 009 936 029 Part of the ALS Group An ALS Limited Company

Address 10 Hod Way Malaga WA Australia 6090 | PHONE +61-8-9209 7655 | Facsimile +61-8-9209 7600

2 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


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

Key :

EG020: Poor matrix spike recovery due to high TDS content.l

EG035F: Poor mercury matrix spike recovery due to high TDS content.l

LOR raised for COD due to sample matrix for various samplesl

MW006 is ALS's internal code and is equivalent to AS4276.7.l

MW006,estimate (~) is reported where there are many non-target colonies; the typical colonies may be masked by overgrowth of non-target organisms.l

This document has been electronically signed by the authorized signatories indicated below. Electronic signing has been carried out in

compliance with procedures specified in 21 CFR Part 11.

Signatories Accreditation CategoryPosition

Alini Goundar Senior Analyst Perth Microbiology

Ankit Joshi Inorganic Chemist Sydney Inorganics

Canhuang Ke Metals Instrument Chemist Perth Inorganics

Chas Tucker Senior Inorganic Chemist Perth Inorganics

Efua Wilson Metals Chemist Perth Inorganics

Rassem Ayoubi Senior Organic Chemist Perth Organics

NATA Accredited Laboratory 825

Accredited for compliance with

ISO/IEC 17025.

Signatories

3 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results

Wilson's BoreBF04BF03ABF01Timmy's BoreClient sample IDSub-Matrix: WATER (Matrix: WATER)

04-AUG-2014 09:3004-AUG-2014 08:1504-AUG-2014 07:3004-AUG-2014 09:0004-AUG-2014 07:45Client sampling date / time

EP1406069-005EP1406069-004EP1406069-003EP1406069-002EP1406069-001UnitLORCAS NumberCompound


pH Value 7.677.74 7.88 7.87 7.96pH Unit0.01----


Electrical Conductivity @ 25°C 1330477 516 792 12000µS/cm1----


Total Dissolved Solids @180°C 872318 382 562 7840mg/L10----


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

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

Bicarbonate Alkalinity as CaCO3 280190 229 269 598mg/L171-52-3

Total Alkalinity as CaCO3 280190 229 269 598mg/L1----


Sulfate as SO4 - Turbidimetric 13319 16 36 1870mg/L114808-79-8


Chloride 23424 25 64 2920mg/L116887-00-6


Calcium 7925 31 41 272mg/L17440-70-2

Magnesium 4419 22 31 363mg/L17439-95-4

Sodium 12441 42 74 2020mg/L17440-23-5

Potassium 4234 36 35 199mg/L17440-09-7


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

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

Arsenic 0.0010.003 0.002 0.003 0.002mg/L0.0017440-38-2

Boron 0.200.18 0.18 0.26 1.31mg/L0.057440-42-8

Barium 0.2300.137 0.240 0.290 0.017mg/L0.0017440-39-3

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

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

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

Chromium <0.001<0.001 <0.001 <0.001 0.011mg/L0.0017440-47-3

Copper 0.0010.001 0.001 0.001 0.006mg/L0.0017440-50-8

Manganese 0.1860.001 0.002 <0.001 <0.001mg/L0.0017439-96-5

Nickel 0.002<0.001 0.002 <0.001 0.002mg/L0.0017440-02-0

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

4 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results





Selenium <0.01<0.01 <0.01 <0.01 0.02mg/L0.017782-49-2

Vanadium <0.010.02 0.02 0.02 <0.01mg/L0.017440-62-2

Zinc 0.0240.205 0.029 0.017 0.021mg/L0.0057440-66-6

Uranium 0.0020.001 0.001 0.001 0.085mg/L0.0017440-61-1


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


Free Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.004----


Total Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.00457-12-5


Weak Acid Dissociable Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.004----


Fluoride 1.01.8 1.7 2.5 1.1mg/L0.116984-48-8


Ammonia as N 0.130.03 0.09 0.12 0.06mg/L0.017664-41-7


Nitrite as N 0.010.32 0.01 0.77 <0.01mg/L0.01----


Nitrate as N 0.012.13 2.70 6.47 6.12mg/L0.0114797-55-8


Nitrite + Nitrate as N 0.022.45 2.71 7.24 6.12mg/L0.01----


Total Kjeldahl Nitrogen as N 1.10.8 0.8 1.9 1.0mg/L0.1----

EK062G: Total Nitrogen as N (TKN + NOx) by Discrete Analyser^ Total Nitrogen as N 1.13.2 3.5 9.1 7.1mg/L0.1----


Total Phosphorus as P 0.031.44 0.12 0.17 <0.05mg/L0.01----


Reactive Phosphorus as P <0.010.64 0.07 0.14 0.03mg/L0.0114265-44-2


Total Anions 15.04.87 5.61 7.93 133meq/L0.01----

Total Cations 14.05.46 6.11 8.71 136meq/L0.01----

5 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results





Ionic Balance 3.215.76 4.19 4.69 1.16%0.01----


Dissolved Organic Carbon 143 3 4 4mg/L1----


Total Organic Carbon 184 3 4 6mg/L1----


Chemical Oxygen Demand 43<10 <10 <10 <40mg/L10----


C6 - C9 Fraction 290<20 <20 <20 <20µg/L20----

C10 - C14 Fraction 100<50 <50 <50 <50µg/L50----

C15 - C28 Fraction <100<100 <100 <100 <100µg/L100----

C29 - C36 Fraction <50<50 <50 <50 <50µg/L50----

^ C10 - C36 Fraction (sum) 100<50 <50 <50 <50µg/L50----


C6 - C10 Fraction 310<20 <20 <20 <20µg/L20C6_C10


(F1)

310<20 <20 <20 <20µg/L20C6_C10-BTEX

>C10 - C16 Fraction <100<100 <100 <100 <100µg/L100>C10_C16

>C16 - C34 Fraction <100<100 <100 <100 <100µg/L100----

>C34 - C40 Fraction <100<100 <100 <100 <100µg/L100----

^ >C10 - C40 Fraction (sum) <100<100 <100 <100 <100µg/L100----


(F2)

<100<100 <100 <100 <100µg/L100----

EP080: BTEXN

Benzene <1<1 <1 <1 <1µg/L171-43-2

Toluene 4<2 <2 <2 <2µg/L2108-88-3

Ethylbenzene <2<2 <2 <2 <2µg/L2100-41-4

meta- & para-Xylene <2<2 <2 <2 <2µg/L2108-38-3 106-42-3

ortho-Xylene <2<2 <2 <2 <2µg/L295-47-6

^ Total Xylenes <2<2 <2 <2 <2µg/L21330-20-7

^ Sum of BTEX 4<1 <1 <1 <1µg/L1----

Naphthalene <5<5 <5 <5 <5µg/L591-20-3

MW006: Faecal Coliforms & E.coli by MF

6 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results




MW006: Faecal Coliforms & E.coli by MF - Continued

Escherichia coli ----~<1 ---- ---- ~<1CFU/100mL1----


1.2-Dichloroethane-D4 93.978.3 108 85.4 91.8%0.117060-07-0

Toluene-D8 92.6106 94.6 105 104%0.12037-26-5

4-Bromofluorobenzene 96.683.2 94.6 107 108%0.1460-00-4

7 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results

Corsair BoreBF02A01M11M10AClient sample IDSub-Matrix: WATER (Matrix: WATER)




pH Value 7.717.49 7.73 7.65 7.60pH Unit0.01----


Electrical Conductivity @ 25°C 315015100 13100 579 2300µS/cm1----


Total Dissolved Solids @180°C 197010500 8550 424 1420mg/L10----


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

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

Bicarbonate Alkalinity as CaCO3 300477 364 249 318mg/L171-52-3

Total Alkalinity as CaCO3 300477 364 249 318mg/L1----


Sulfate as SO4 - Turbidimetric 3692380 1820 20 196mg/L114808-79-8


Chloride 6913910 3360 32 499mg/L116887-00-6


Calcium 135430 254 44 109mg/L17440-70-2

Magnesium 116516 407 31 90mg/L17439-95-4

Sodium 3522390 2110 24 240mg/L17440-23-5

Potassium 47218 159 28 38mg/L17440-09-7


Aluminium <0.010.01 0.02 <0.01 <0.01mg/L0.017429-90-5

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

Arsenic 0.013<0.001 <0.001 0.003 0.084mg/L0.0017440-38-2

Boron 0.651.16 1.30 0.10 0.61mg/L0.057440-42-8

Barium 0.0310.068 0.034 0.222 0.041mg/L0.0017440-39-3

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

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

Cobalt 0.0010.004 0.003 <0.001 <0.001mg/L0.0017440-48-4

Chromium 0.0020.003 <0.001 <0.001 <0.001mg/L0.0017440-47-3

Copper 0.0040.012 0.014 0.001 <0.001mg/L0.0017440-50-8

Manganese 0.1230.126 0.077 0.003 0.042mg/L0.0017439-96-5

Nickel 0.0040.020 0.005 <0.001 <0.001mg/L0.0017440-02-0

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

8 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results





Selenium <0.010.01 <0.01 <0.01 <0.01mg/L0.017782-49-2

Vanadium <0.01<0.01 <0.01 0.02 <0.01mg/L0.017440-62-2

Zinc 0.0840.024 0.045 0.028 0.014mg/L0.0057440-66-6

Uranium 0.0220.032 0.069 0.002 0.019mg/L0.0017440-61-1


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


Free Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.004----


Total Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.00457-12-5


Weak Acid Dissociable Cyanide <0.004<0.004 <0.004 <0.004 <0.004mg/L0.004----


Fluoride 0.60.7 1.9 1.1 0.6mg/L0.116984-48-8


Ammonia as N 0.083.14 0.09 0.06 0.06mg/L0.017664-41-7


Nitrite as N 0.010.55 <0.01 0.04 <0.01mg/L0.01----


Nitrate as N 5.182.51 2.50 2.71 0.02mg/L0.0114797-55-8


Nitrite + Nitrate as N 5.193.06 2.50 2.75 0.02mg/L0.01----


Total Kjeldahl Nitrogen as N 0.88.8 0.7 1.1 0.4mg/L0.1----

EK062G: Total Nitrogen as N (TKN + NOx) by Discrete Analyser^ Total Nitrogen as N 6.011.9 3.2 3.8 0.4mg/L0.1----


Total Phosphorus as P 0.080.07 <0.05 0.21 0.05mg/L0.01----


Reactive Phosphorus as P 0.020.04 <0.01 0.21 0.01mg/L0.0114265-44-2


Total Anions 33.2169 140 6.29 24.5meq/L0.01----

Total Cations 32.8173 142 6.51 24.3meq/L0.01----

9 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results





Ionic Balance 0.561.18 0.72 1.67 0.52%0.01----


Dissolved Organic Carbon 38 4 8 9mg/L1----


Total Organic Carbon 330 4 8 10mg/L1----


Chemical Oxygen Demand 1485 <40 22 30mg/L10----


C6 - C9 Fraction <20<20 <20 <20 <20µg/L20----

C10 - C14 Fraction <50<50 <50 70 70µg/L50----

C15 - C28 Fraction <100<100 <100 170 1040µg/L100----

C29 - C36 Fraction <50<50 <50 130 1410µg/L50----

^ C10 - C36 Fraction (sum) <50<50 <50 370 2520µg/L50----


C6 - C10 Fraction <20<20 <20 <20 <20µg/L20C6_C10


(F1)

<20<20 <20 <20 <20µg/L20C6_C10-BTEX

>C10 - C16 Fraction <100<100 <100 <100 170µg/L100>C10_C16

>C16 - C34 Fraction <100<100 <100 260 1880µg/L100----

>C34 - C40 Fraction <100<100 <100 <100 1400µg/L100----

^ >C10 - C40 Fraction (sum) <100<100 <100 260 3450µg/L100----


(F2)

<100<100 <100 <100 170µg/L100----

EP080: BTEXN

Benzene <1<1 <1 <1 <1µg/L171-43-2

Toluene <2<2 <2 <2 <2µg/L2108-88-3

Ethylbenzene <2<2 <2 <2 <2µg/L2100-41-4

meta- & para-Xylene <2<2 <2 <2 <2µg/L2108-38-3 106-42-3

ortho-Xylene <2<2 <2 <2 <2µg/L295-47-6

^ Total Xylenes <2<2 <2 <2 <2µg/L21330-20-7

^ Sum of BTEX <1<1 <1 <1 <1µg/L1----

Naphthalene <5<5 <5 <5 <5µg/L591-20-3

MW006: Faecal Coliforms & E.coli by MF

10 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Analytical Results




MW006: Faecal Coliforms & E.coli by MF - Continued

Escherichia coli -------- ---- ---- ~1CFU/100mL1----


1.2-Dichloroethane-D4 97.294.0 106 110 86.1%0.117060-07-0

Toluene-D8 99.498.7 95.8 95.6 108%0.12037-26-5

4-Bromofluorobenzene 89.889.0 92.0 94.2 108%0.1460-00-4

11 of 11:Page

Work Order :

:Client

EP1406069

ABM RESOURCES NL


Surrogate Control Limits

Recovery Limits (%)Sub-Matrix: WATER

Compound CAS Number Low High


1.2-Dichloroethane-D4 17060-07-0 60.5 141.2

Toluene-D8 2037-26-5 73.4 126

4-Bromofluorobenzene 460-00-4 59.6 125.3


ABM Resources NL


APPENDIX F

Preliminary Review of Standard Operating Procedure for Groundwater Monitoring

Saprolite Pty LtdABN 43 135 590 724

PO Box 2234 Ellenbrook WA 606952B Mornington Parkway Ellenbrook WA 6069

Ph: (+61 8) 6296 7760 I Fax: (+61 8) 6296 7762 I Email: [email protected]

Memorandum

To: Justin Robins/Brad Valiukas Company: ABM Resources NL From: Garth Richards Date: 27 August 2014 cc: Shaun Wimbridge/Rob Hollis Job/PO No.: AB0101-01-01 Re: Twin Bonanza Gold Project – Preliminary Review – Standard Operating Procedure for Groundwater Monitoring

1. INTRODUCTION A Standard Operating Procedure (SOP) for Groundwater Monitoring was prepared by Soil Water Consultants (SWC, 2013) for ABM Resources NL (ABM), Twin Bonanza Gold Project (TBGP). The SOP formed part of the Water Management Plan for TBGP, (SWC, 2013), and was included in ABM’s submission for their Mining Management Plan to the Northern Territory Department of Mines and Energy.

The SOP was prepared as a generic type document with nominal bore conditions, with the preface that it is a “living document” that should be updated as and when required when new information and data becomes available.

A Hydrogeological Works Program that follows on from proposed monitor locations referenced within the SOP, was implemented at TBGP that included:

• Drilling/completion and baseline testing of 18 monitoring bores (nominal casing size 50mmND)

• Drilling/completion of a replacement production bore at Strezza’s/Timmy’s Bore (pre-existing bore collapsed) for longer term water supply (nominal casing size 155mmND).

• Test pumping three (3) production bores:

- Two (2) pre-existing, previously equipped production bores (Wilson’s Bore and Corsair Bore) to assess the existing pumping capacity.

- One (1) replacement production bore at Strezza’s/Timmy’s Bore to assess the longer term water resource capacity.

Site works was carried out from 1 July 2014 to 4 August 2014.

This memo presents an initial and preliminary review of the SOP based on the preliminary results and findings from the drilling and bore completion, and subsequent baseline testing and sampling, to examine if any changes may be required to the SOP to reflect actual bore conditions.

A detailed hydrogeological investigation and bore completion report is in preparation (at the time of writing) by Saprolite Environmental that presents all field investigation results and data, detailed analysis and discussion, and recommendations, including the recommended monitoring schedule.

2. COMMENTARY

It is noted that the SOP was prepared in accordance to the Northern Territory (NT) Department of Mines and Energy (DME) Advisory Note on the ‘Methodology for the Sampling of Ground Waters’ and with reference to the requirements of the Minerals Titles Act 2010, the Mining Management Act 2001, the appropriate Australian Standards (e.g. AS 5667.1:1998; 5667.4:1998; 5667.6:1998; and 5667.11:1998) and the Mine Site Water Management Handbook (Mineral Council of Australia, 1997).

Memorandum To Justin Robins/Brad Valiukas ABM Resources NL 27 August 2014 Page 2 of 9

TBGP - PRELIMINARY REVIEW OF SOP GROUNDWATER MONITORING - SAPROLITE MEMO - 27 AUG 2014\27 AUG 2014\GARTH RICHARDS:gr

The NT Advisory Note, states that “this advisory note is not intended to prescribe a methodology but to provide general principles for mine operators, who are encouraged to expand on the information provided in this document in the implementation of site specific methods.”

These referenced documents should be used as guidelines in the preparation a groundwater monitoring program, to ensure the following, but not limited to:

- Assist in the planning of a Sampling, Measuring and Analysis Program. - Provide a site specific set of measuring, sampling and analytical requirements, as well as generalised and

specific fieldwork procedures for the person(s) undertaking the sampling program. - Provide specific requirements for maintenance of the monitoring bores to ensure reliable monitoring data

can be obtained and that the bores remain intact, and in sound and satisfactory condition. - Provides documentary evidence as to what was planned and what is expected at the completion of the

program, as a component of a quality assurance philosophy in achieving sound defensible environmental data of integrity and accuracy.

The following sections within the SOP will require amendment:

2.1 BORE LOCATIONS

Following the completion of the drilling and bore construction program, including DGPS surveying of the bore locations, a new bore schedule will be required, together with a new bore location plan. This will be included in the Hydrogeological Report (draft in preparation, Saprolite, 2014).

2.2 SAMPLING FREQUENCY AND PARAMETERS TO BE MEASURED

The stated sampling frequency within the SOP is given as monthly, without any substantive explanation as to the basis.

It is considered that blanket monitoring/sampling of all production and monitoring bores on a monthly basis is not warranted, even for a baseline period of 12 months. This would be costly, and not necessarily provide any additional information if the sampling were reduced in frequency to:

- bi-monthly sampling (i.e. every two months) for plant site monitor bores; - quarterly sampling for analogue monitor bores; - quarterly water levels for water supply monitor bores; - monthly abstraction and water levels for production bores; - bi-monthly field water chemistry for production bores; and - 6-monthly sampling for production bores.

The sampling frequency and parameters to be measured should be on the basis as follows:

Objectives for monitoring:

• early detection of contaminants entering the groundwater from mining and mineral processing activities; • potential effects on aquifer and groundwater dependent ecosystems from groundwater abstraction for water

supply purposes; and • ensuring treated water supply is fit for human consumption.

Risk Assessment

There is potential for the deterioration of groundwater quality from contaminants, spills, or seepage from waste storage facilities, or from over exploitation from water supply bores. Information and data collected from the recent hydrogeological investigations has provided sufficient information to assess the risk associated from the operations; a summary of the information is provided below:



Plant site monitor bores

• Four (4) shallow bores drilled dry to 36m and completed as dry bores, and are considered to be in the unsaturated zone, and well above any aquifer.

• Five (5) deep bores were drilled to depths ranging from 132m to 144m, three bores encountered groundwater in fractured sandstone from 114m to 126m, and the other two bores were drilled dry. The standing water levels were measured in all deep monitor bores ranging in depths from 59 to 70m, and indicating seepage occurrence in formerly dry bores.

• The shallow surficial bores are designed for early detection into subsurface weathered and unsaturated strata from potential contaminants that may seep or migrate from the process area.

• The deeper bores have aquifer depths at greater than 110m, and are relatively low yielding. The aquifer is considered semi-confined, with potentiometric levels between 374mAHD and 393mAHD, some 50m above the reported aquifer depth.

• The likelihood of these deep low yielding aquifers being contaminated from mining activities is considered low, especially in light of the semi-confined nature of the aquifer; i.e. the deep aquifer is isolated by an overlying impermeable unit.

Water supply bores

• Four (4) monitor bores and a production bore were completed to depths ranging from 40 to 41m within a basal palaeochannel aquifer using mud rotary drilling techniques. The standing water levels ranged from 2.9 to 3.9mbgl.

• Two (2) monitor bores associated with production bores were completed; one at each pre-existing production bore (Corsair Bore and Wilson’s Bore) to respective depths of 150m and 90m. Groundwater was encountered at the Corsair monitor bore (M11) at 90m, with a standing water level of 55mbgl. Mud rotary drilling techniques were used in the drilling of the Wilson’s monitor bore (M10a); as such the depth of any groundwater intersection was not delineated, but the standing water level was 49mbgl.

• The water supply bores are spatially distant from the mine processing activities, and contamination of these aquifers is unlikely. - The palaeochannel bores are located 7km from the processing area, although are relatively shallow, are also

semi-confined, with an interpreted silcrete hardcap overlying the main aquifer that potentially isolates the main productive zone.

- The deep aquifer in Corsair’s Bore is also semi-confined, similar to the deep monitor bores at the Plant, and is equally unlikely to be contaminated from mining activities, in addition to being 3km upgradient from the Plant.

- Wilson’s Bore, is relatively low yielding, with an inferred limited storage aquifer at depths less than 90m. It is a semi-confined aquifer, and potentially isolated by overlying inferred less permeable units. The bore is also located 2.5km from the Plant. This bore is unlikely to be impacted from mining activities.

• Over exploitation of water supplies is a risk, which could impact aquifers, in terms of declining water levels, aquifer dewatering, long term bore performance, and potential effects on vegetation. Deleterious effects could be associated with increasing salinity, declining water levels and reduced pumping yields.

Analogue monitor bores

• One shallow bore drilled dry to 36m, and completed as a dry bore, and is considered to be in the unsaturated zone, and well above any aquifer.

• One deep bore drilled to 114m, and encountered groundwater/seepage in fractured sandstone at 102m. The standing water level was measured at a depth of 68mbgl.

• One mud rotary drilled bore was completed to a depth of 42m, within the upper catchment of the palaeovalley. This bore was completed as a dry bore.

• The analogue monitor bores are located in upstream/upgradient positions at some distance from the operations. The deep bore should provide suitable background and ambient groundwater conditions with respect to water chemistry. The shallow bore and the one in the palaeovalley, whilst currently dry, may eventually contain water from seepage.



The following table is a proposed revised monitoring schedule that includes parameters to be measured and frequency, subject to the monitoring objectives, as above:

Table 1 Proposed Monitoring Schedule – Baseline

Area Monitoring Locations Parameters Frequency

Water Supply Bores

Production Bores

Corsair Bore, Wilson’s Bore, and Strezza’s/Timmy’s Bore 2

(if a production bore is not equipped it should be monitored as a monitoring bore)

Abstraction Monthly (end of month) Water Levels (if possible) Monthly (end of month) Field Parameters Bi-monthly (every 2 months) Field Parameters, Laboratory Parameters, Major Ions, Metals

6-monthly

Monitor Bores (associated with production bores) M10a, M11 and BF03a

Water Levels Quarterly (or Monthly – see below)

EC Profiling Quarterly Borefield Monitor Bores BF01, BF02, and BF04

Water Levels Quarterly EC Profiling Quarterly

Plant Site Monitor Bores (Shallow/Surficial) M01, M02, M03, and M04

Monitor Bores (Deep) M05, M06a, M07, M08a, M09


Bi-monthly

Analogue Bores

Monitor Bores (Shallow/Surficial) A02 and A03

Monitor Bores (Deep) A01


Quarterly

Treatment Plant

Post Treatment Plant Camp Kitchen Tap and Processing Office Tap

Microbiological Monthly

Abstraction: Meter readings, pump status, duration of pump status. Field Parameters: Electrical conductivity (EC) and pH. Laboratory Parameters: Electrical conductivity (EC), pH, total dissolved solids (TDS), total alkalinity. Major Ions Ca, Na, Mg, K, SO4, Cl, HCO3, CO3, F Metals/Metalloids: Al, Sb, As, B, Cd, Cr, Cu, Pb, Hg, Ni, Mn, Se, U, V, and Zn, Nutrients: Nitrate as N (NO3), Ammonia as N (NH33), Total Nitrogen (TN), Total Kjeldahl Nitrogen (TKN as N),

Reactive Phosphorus, Total Phosphorus, Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Dissolved Organic Carbon (DOC)

Cyanide: Weak Acid Dissociable Cyanide (WAD CN) Hydrocarbons: Total Petroleum Hydrocarbons (TPH (C6-C36)) and Total Recoverable Hydrocarbons (TRH (C6-C40)) Microbiological: E. Coli EC Profiling: Routine EC Profiling – No purging, as all have been airlifted clean and initial EC profiling has been undertaken.

Explanatory notes in relation to elements of the monitoring schedule are as follows:

Monitoring Sites Explanatory Notes

Production Bores Water Levels – water levels may not be able to me measured from production bores equipped with pumps, as WL dip-tubes are not likely to be installed. Water levels should be measured from their adjacent monitor bore instead. If a production bore is not equipped it should be monitored in the same way as a monitor bore.

Water Chemistry – water chemistry is not likely to change significantly with time, and monthly sampling is not considered necessary. However, quarterly field pH and EC is a good indication of general water quality, and trends over time. A 6-monthly sampling event is suggested with analysis of major ions and metals only



Monitoring Sites Explanatory Notes

Production Bores and Treatment Plant

Microbiology – whilst the production bores may be utilised as a raw water source for ABM’s potable water supply following RO treatment; it would be more effective to sample and test the treated water to ensure that the potable water that is supplied (i.e. from within the camp distribution system) is free of microbiological contaminants and safe to consume.

It is recommended that a Drinking Water Quality Management Plan be prepared, established and implemented to guide ABM in the correct procedure of collecting microbiological samples, what steps to take if positive results are returned, and reporting (internally and externally). As a resource guide the following is referenced:

- NHMRC, NRMMC, (2011) The Australian Drinking Water Guidelines – 6, National Water Quality Management Strategy;

- NHMRC (2005), Drinking Water Guidelines: Community Water Planner – A tool for small communities to develop drinking water management plans www.nhmrc.gov.au/publications/synopses/eh39.htm

- NT Department of Health (2012), Environmental Health Guidelines for Private Water Supplies; and

- NT Department of Health (2013), Environmental Health Fact Sheet No 414 – Private Water Supplies in Accommodation Businesses.

Borefield Monitor Bores EC Profiling – the monitor bores within the palaeovalley, and adjacent to production bores should be EC profiled to monitor any deterioration of water quality within the aquifer. Downhole insitu measurements of electrical conductivity are the best indication of vertical stratification of water quality within bores, and as a result migration of natural saline groundwater (i.e. saline intrusion) from surrounding and underlying aquifers that may contain more saline groundwater. Should EC profiling indicate a change in insitu salinity in distant monitor bores, the operation of production bore(s) within the can be reviewed and rates adjusted if required.

Plant Site Monitor Bores Monitoring Frequency – Bi-monthly (every 2 months) monitoring/sampling frequency is recommended; reduced from monthly. Sampling more frequently is not necessarily going to add greater value or provide more information during a baseline period of 12 months. This will also reduce costs

Dry Bores – shallow/surficial bores that were drilled dry, and remained dry 2-weeks after completion may remain dry for some time. These bores should still be checked on a quarterly basis for the presence of water in the bores, by simply attempting to measure a water level, and comparing with the completed hole depth. Unless there is more than 1m of water in the end of the bore, it is recommended that only a downhole EC measurement be taken (using EC profile), as it is likely that the water might be turbid and silty, and not appropriate to sample.

Analogue Monitor Bores

Monitoring Frequency – Quarterly monitoring/sampling frequency is recommended; reduced from monthly. Sampling more frequently is not necessarily going to add greater value or provide more information during a baseline period of 12 months. This will also reduce costs

Dry Bores – see above

Plant Site Monitor Bores and Analogue Monitor Bores

Cyanide species – Weak acid dissociable Cyanide (WAD CN) is the best indication of contamination in groundwater from Cyanide.

All Sites Field Parameters – Recommended field parameters for water chemistry is pH and Electrical Conductivity (EC); the first is a measure of the acidity of the groundwater and EC is a measure of salinity. Dissolved Oxygen (DO) and Redox Potential (ORP) are not considered necessary within this hydrogeological environment and in the context of the project location not pertinent to the monitoring objectives.

All Sites Baseline Period – The recommended baseline period is 12 months, following which time the monitoring data should be reviewed/assessed in detail and background levels set (as per the SOP) and trigger levels subsequently determined once sufficient background information data is collected, using statistical methods.



2.3 BORE PURGING Bore purging prior to sampling is considered necessary to ensure representative water samples are collected, that sufficient water in the bore column is removed, and that groundwater from the formation is introduced into the bore.

The SOP and reference material state that at least 4-6 bore volumes should be purged from the bore prior to sampling. In practicality for deep bores this could be difficult in procuring a sampling pump that is capable of:

- purging groundwater deeper than 60-80m - sustaining flow rates with declining heads - purging bores that are inherently low yielding, given bores were drilled dry or had low flow rates while

drilling. - potential for the water within the bore to be silty (or sediment laden) and possibly turbid in some instances

(M08A and M09).

It is recommended that rather than stringently removing 4 to 6 bore volumes, an alternative approach be taken that could be considered more representative. That is, bores can be purged until pH, EC and Temperature measurements of the abstracted water stabilises to within 10% variation. This can be achieved with less than 2 bore volumes removed (based on practical experience). It is recommended at least the first 1 to 2 bore volumes from the bore column is removed to remove the stagnant water, and to allow sufficient natural groundwater enter the bore.

A suitable purging/sampling pump should be considered that has the capability of the above criteria. For example, a Bennet Pump (high flow) or a Micropurge® (low flow) pumping system. Each system has advantages and disadvantages; see section 5 for comparisons, and individual brochures for each pump are included as Appendix A.

It is recommended, that the Micropurge® Low-Flow sampling system is used in the case of ABM’s monitoring requirements, given that the Bennet pump may not be able to handle silty or sediment laden water.

3. CONCLUSIONS

In summary, the SOP will need to be revised, amended and tailored to reflect the site specific conditions, including the actual bores that were drilled, the initial baseline testing, and the hydrogeological conditions that were encountered. The changes to the SOP include:

- Addition of actual bore schedule and location plan - New monitoring schedule with revised parameters and frequencies - Bore purging considerations - Additional and different sampling equipment that will be required - Minor amendments and improvements throughout

The contents of this memo, and any other further commentary, following the detailed assessment of all data (including baseline chemistry data) from the hydrogeological works program, will be provided in the Hydrogeological Investigations report (draft in prep).

Following the completion of the Hydrogeological Investigations report, it is recommended:

• The SOP be rewritten (or a new document prepared) that includes the above changes, and to suit a field based practical program, for ease of use in the field for operators; and

• A Drinking Water Quality Management Plan is prepared and developed.

Should you have any queries please do not hesitate to contact the undersigned.

Yours faithfully SAPROLITE ENVIRONMENTAL Garth Richards Garth Richards Senior Principal Consultant Managing Director



4. STATEMENT OF LIMITATIONS

Aquifer materials and groundwater flow systems are a product of continuing natural and man- made processes and thus exhibit a variety of characteristics and properties that vary from place to place and can change with time. Geology/hydrogeology involves gathering and assimilating limited facts about these characteristics and properties in order to understand and predict the behaviour of the ground on a particular site under certain conditions. This report may contain such facts obtained by inspection, drilling, excavation, probing, sampling, testing or other means of investigation, particularly pumping and drawdown data. If so, they are directly relevant only to the groundwater system at the place where, and the time when the investigation was carried out. Any groundwater modelling predictions presented should not be regarded as matters of fact.

This report and other reports referred to contain comments on works being carried out by others. Saprolite Environmental cannot and will not take responsibility for works carried out by others on site to date. We do not guarantee the performance of the project in any respect, only that our work and judgement meet the standard of care of our profession at this time.

Any interpretation or recommendation given in this report shall be understood to be based on judgement and experience, not on greater knowledge of facts other than those reported. The interpretation and recommendations are therefore opinions provided for the Client's sole use in accordance with a specific brief. As such they do not necessarily address all aspects of the groundwater system on the subject site.



5. COMPARISON BETWEEN LOW FLOW AND HIGH FLOW PUMPING

Low Flow with the QED well wizard and MP10H controller versus High Flow Bennett Pump with variable pressure control

Option 1: Well Wizard Pump (Micropurge® Low Flow)

Advantages of this system:

• True low flow - no need to excavate multiple bore volumes, only interacts with a small amount of the bore column. Associated reduction in time required to sample and for sample to stabilize.

• Option of using drop tubes to pump from greater depths • Different housing materials available depending on the water matrix (i.e.: reduce corrosion and damage

potential per water source). • Extremely robust against silty/high sediment water • Minimal drawdown in bore column • No contact with the air to the sample (bladder system)

Disadvantages of this system:

• High Pressure can be required: 15psi + 1.5psi/m (eg. 150m head = 240psi) • High capital cost at the onset, recuperated over time with reduced labour • Requires a water level meter also (nominal drawdown is <10cm) • Requires a controller at surface to regulate pressure and water level, although adds to ease of use once a

good working system is in place. • Only used as Low Flow Pump - limited with flow rates, although no need to purge prior to sampling. • Time to sample can be significant in areas of low hydraulic conductivity

Option 2: Bennett Pump

Advantages of this system

• Can pump up to 300m (model 1800+) • Can be used as low flow (control pressure) as the water doesn’t come into contact with the air-source

(manual control) • Can also be used for purging (low rates roughly 3 – 4 litres per min) • Moderate air pressure required, increases with depth • Doesn’t require a controller at surface

Disadvantages of the system

• Contaminated waters of high silt/sediment could damage the internal works of the pump • May require excavation of 3-4 bore volumes (for compliance testing), which can be time consuming and

requires discharge of potentially large amounts of water. • Not automated and programmable as with the Well Wizard



APPENDIX A PUMP BROCHURES

GRO

UN

DW

ATER SA

MPLIN

G PU

MPS

10

MicroPurgeLow-Flow Sampling

What is it?The basic ideology of Low-FlowPurging and Sampling is to pumpdirectly from the formation whilstleaving the stagnant water in thecasing undisturbed. This is achieved by pumping at a low rate that is close to or less than the natural movement of groundwater flow through the well. Typical flow rates are 0.1 to 0.5 L/min.

Instead of pumping an arbitrary number of casing volumes, Low-Flow utilises two stability controls. Firstly, a stable water level (drawdown) during purging indicates that water is being pumped directly from the formation. This is further confirmed by the second control, which is indicator water quality parameter stabilisation.

Low-Flow samples represent a flow weighted average concentrations from typical monitoring wells and is the best approach for determining the true mobile contaminant load in most monitoring scenarios.

Traditional Purging Vs the Low-Flow Solution The traditional approach to groundwater sampling has focused on removing the stagnant water inthe well casing prior to collecting asample. The rationale is that once the stagnant water is removed, only fresh aquifer water remains, which may then be sampled. Purging of the stagnant water is normally achieved using bailers or a high-flow pump to remove an arbitrary volume of water such as 3-5 bore volumes.

DisadvantagesHigh purge volumes can cause •underestimation of contaminant load due to dilution or overestimation due to induced plume migration, contaminant mobilisation and increased sample turbidityDewatering lower-yield wells •causes losses of VOCs, affects DO and CO2 levels and increases sample turbidityExcessive drawdown can cause •overestimation (“false positives”) from soil gas infiltration or from mobilisation of soil-bound contaminants in the overlying formation or smear zonePurge water generated can be •hundreds of litres from each well, with the associated handling and disposal costs

Bailers or FootvalvesStagnant water mixes into thesampling zone, requiring extensivepurging to obtain formation water.Surging action increases turbidity,which can affect both metals andsome organic compounds.

Insertion of the bailer and decanting samples causes aeration that can reduce VOCs and dissolved metals. Inability to reproduce the same purging rate and sampling position leads to data inaccuracy.

Electric Submersible PumpsExcessive drawdown pulls stagnantwater into sampling zone and mobilises smear zone contaminants.Water from chemically distinct ones above and below the screened one are pulled into the borehole. Less accurate samples result from effects on volatiles, turbidity, mixing and dilution.

Advantages of Low-FlowSamples which are representative •of the mobile load of contaminants present (dissolved and colloidassociated)Minimal disturbance of the •sampling point thereby minimising sampling artifactsLess operator variability, greater •operator controlReduced stress on the formation •(minimal drawdown)Less mixing of stagnant casing •water with formation waterReduced need for filtration and •therefore, less time required for samplingSmaller purging volume which •decreases waste disposal costs and sampling timeBetter sample consistency, •reduced artificial sample variability

Source: “Low-Flow (Minimal Drawdown)Ground-Water Sampling Procedures”, Robert J.Puls & Michael J. Barcelona, EPA Ground WaterIssue, April 1996.

Bailers & portable pumps (Fig. 1) mix stagnant water, air and sediment into samples - even after purging 3 to 5 well volumes.

High-rate pumps (Fig. 2) reduce sampling precision due to high-flow effects on volatiles, turbidity and mixing. Low-flow sampling methods withMicroPurge® equipment (Fig. 3) deliver precise samples with minimal purging; natural aquifer flow brings representative water to the sampling zone with no mixing or excess turbidity.

MicroPurge - Introduction

Low-Flow / MicroPurge sampling methods control turbidity and delivery higher quality samples.

Fig. 1 Fig. 2 Fig. 3

GRO

UN

DW

ATER

SA

MPL

ING

PU

MPS

19

Bennett Sample PumpSubmersible Piston Pump

The Bennett Sample Pumps has an automatic reciprocating piston motor operated by compressed air, that generate power for operating a double acting, piston fluid pump.

Models for lifts up to 170 meters have one motor piston. Models for lifts up to 330 metres have two motor pistons, providing increased power for operating the pump. All models have a differential ratio between the motor pistons and the pump to accomplish lifts using low pressure air from small compressors.

Bennett Pumps may be operated in any position from horizontal to vertical. These pumps will operate submerged to great depths or above water with a drop tube attached to the fluid inlet.

BenefitsController-less pump•Infinitely adjustable flow rate•Air does not contact water sample•Short length 400mm to 500mm •avoids hang ups in wells300m plus depth capacity with •only 170psi due to mechanical advantage of the internal pistonsContinuous flows•Little agitation of water sample•36mm or 46mm diameter versions •availableFlow to 9 litres per minute•Controller-less variable flow rate •by varying air pressureStainless steel construction•Bottom filling•10 models available to suit your •sampling needsAvailable as a Portable or •Dedicated version

Portable Reel OptionsA pump unit for applications where portability is required. Each consists of a Bennett Pump, a tube bundle (choice of length and materials) and a reel. The reel is equipped with all controls for operating the pump. The portable units are completely assembled, tested and shipped ready for use.

Portable Reel FeaturesTube Bundle Construction: •stainless steel cable core polypropylene air supply and air exhaust tubes, choice of materials for water discharge tube, electric chord for water level indicator, nylon wire ties to hold bundle together (PVC tape wrap optional).Water Level Indicator System: A •sonar alarm sounds when the probe installed in pump head touches water. System is powered by a 6 volt battery inside console.Rotary Swivel: Installed on reel •axle, eliminates disconnecting lines when setting pump.Flow meter: Monitors pump •discharge rate .75 to 7.5 litres per minute.Air Pressure Regulator & Gauge: •Adjustable for controlling pump discharge.Hand Brake: Controls lowering •speed into borehole.Reel Drive: Sprocket and chain •drive with reduction ratio for hand crank operation. Power drive system available for larger reels.Reel Lock: Holds pump in fixed •position in borehole.Roller Head: Guides tube bundle •into borehole.

Tubing for Bennett PumpsWe can supply Bennett made tubing with the pumps or locally made tubing. The tubing set is a 3 hose set for air supply, air vent and water discharge. The Bennett tubing has the mating pump fittings permanently crimped onto the bottom end of the tubing. This makes it easy to connect to the pump and provides a more reliable water proof connection, but more difficult to replace the entire tubing when the time comes. EnviroEquip can provide fittings that allow user replacement of the hosing if required. This is an extra cost up front, but makes it easy to replace tubing at any stage later on.

Fits 50mmWell

Piston Pump

For detailed information and specifications, request a brochure

Hydrogeological Baseline & Bore Completion Report ... - Geoscience

Documents

Transcript of Hydrogeological Baseline & Bore Completion Report ... - Geoscience