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BARRAMBIE MINE DEWATERING INVESTIGATION
Document Status
Revision Date Revision Description
A 06/10/2008 Unreviewed Draft
B 16/10/2008 Final
Name Position Signature Date
Originator: Kate Holder Senior Hydrogeologist 16/10/2008
Reviewer: Greg Sheppard Principal Hydrogeologist 16/10/2008
Aquaterra Consulting Pty Ltd ABN 49 082 286 708
Suite 4, 125 Melville Parade Como, Western Australia, 6152
Tel: (08) 9368 4044 Fax: (08) 9368 4055
EXECUTIVE SUMMARY Reed Resources Ltd (Reed Resources) are currently undertaking Definitive Feasibility Studies into the
development of a vanadium / titanium mine in the Barrambie area, located 80km northwest of Sandstone and
115km southeast of Meekatharra in the Murchison Region of Western Australia. The Barrambie deposit
consists of a north pit and south pit. Comprehensive mineral resource investigations have been conducted
at the south pit, whilst mineral resource investigations have only recently commenced at the north pit area.
Both the south and north pits are proposed to be mined to 460mRL, some 25-30m below the local water
table.
A number of holes have been drilled in the Barrambie deposit area for mineral exploration purposes. A
review of available data from these exploration holes suggests that the geology in the mine area is relatively
low yielding, with water inflows intercepted at the base of the weathering profile and fracture zones. Airlift
tests could not be conducted on the existing drill holes because the majority of the holes were unstable and
collapsed over time due to the high clay content.
Eleven drilling locations were identified for the mine dewatering investigation: seven holes in the south pit
area, two holes outside of the south pit area and two holes in the north pit area. Drilling of the eleven holes
commenced on 5th August 2008. Following completion of the drilling programme, airlift tests were attempted
at each open drill hole to obtain an estimate of aquifer yields. Bores BWB01, BWB02, BWB04, BWB05 and
BWB11 were dry at completion of drilling, therefore airlift tests were not conducted. Airlift tests on bores
BWB03, BWB06, BWB07, BWB08, BWB09 and BWB10 returned insignificant flows and went dry within a
few minutes, therefore the tests were terminated and the rate of water level recovery was recorded for up to
20 minutes.
In order to obtain estimates on aquifer permeability, the water level recovery data was analysed using
standard graphical techniques for rising head tests. Estimated permeabilities range from 0.1m/d to 0.95m/d,
with an average permeability of 0.4m/d applied for the Barrambie mine area.
Analytical modelling was undertaken to predict groundwater inflows to the Barrambie mine over the period of
the mining operation. The analytical modelling included using a lumped parameter analytical groundwater
flow model based on the Dupuit-Forchheimer equation for flow to a large diameter well in an unconfined
aquifer.
The results of the analytical modelling suggest that groundwater inflow into each of the proposed pits will
range from around 950kL/d (11L/s) at the first stage of mining, increasing to around 2,400kL/d (28L/s) toward
the end of mining. This approach used analytical, lumped parameter models and the predictions can only be
considered to represent average conditions. That is, there may be higher inflows around larger fracture
networks or where higher permeability horizons exist. Sensitivity analyses were conducted in order to
estimate “worst case” inflows at such zones.
Under base case conditions and applying average annual rates for rainfall and evaporation, simple analytical
modelling predicts that pit lake levels will reach equilibrium at approximately 475mRL (i.e. approximately 15m
above the pit floor and approximately 15m below the pre-mining water level). The model predicts that it will
F:\Jobs\767\B9-B11\600\209b.doc ES-1
EXECUTIVE SUMMARY take approximately 5 years for the pit water level to recover to 475mRL. As long-term pit water levels will
remain below pre-mining and regional water levels, the Barrambie pits will act as a groundwater sink, with
groundwater flow directions toward the pit, and evaporative losses being the only outflow of water from the
system.
Given the nature of the aquifer system (low permeability, fractured rock) it will not be practical to develop a
viable or cost effective advanced dewatering system using perimeter dewatering bores. It is recommended
that mine dewatering be achieved through the use of in-pit sump pumping.
F:\Jobs\767\B9-B11\600\209b.doc ES-2
TABLE OF CONTENTS
F:\Jobs\767\B9-B11\600\209b.doc i
EXECUTIVE SUMMARY..............................................................................................................................ES-1
SECTION 1 - INTRODUCTION....................................................................................................................1
SECTION 2 - PHYSICAL SETTING.............................................................................................................2 2.1 Climate..................................................................................................................................................................... 2 2.2 Geology and Hydrogeology ..................................................................................................................................... 2
2.2.1 Geology....................................................................................................................................................... 2 2.2.2 Hydrogeology .............................................................................................................................................. 2
SECTION 3 - FIELD INVESTIGATIONS......................................................................................................4 3.1 Drilling Results ......................................................................................................................................................... 4 3.2 Hydraulic Testing ..................................................................................................................................................... 4
SECTION 4 - MINE DEWATERING REQUIREMENTS...............................................................................6 4.1 Mine Inflow Assessments ........................................................................................................................................ 6 4.2 Final Pit Void Assessment ....................................................................................................................................... 7 4.3 Impacts of Mine Dewatering .................................................................................................................................... 7
SECTION 5 - CONCLUSIONS & RECOMMENDATIONS ..........................................................................8 5.1 Conclusions ............................................................................................................................................................. 8 5.2 Recommendations ................................................................................................................................................... 8
SECTION 6 - REFERENCE LIST ................................................................................................................9
TABLES
Table 1 Summary of Mine Monitoring Bores.............................................................................................................. 4 Table 2 Summary of Rising Head Test Analysis........................................................................................................ 5 Table 3 Summary of Predicted Pit Inflows................................................................................................................. 6
FIGURES
Figure 1 Barrambie Mine Location Plan Figure 2 Barrambie Geology Plan Figure 3 Monitoring Bore Location Plan Figure 4 Barrambie South Pit – Mine Stages
APPENDICES
Appendix A Barrambie Mine Borelogs Appendix B Rising Head Test Data & Analysis
F:\Jobs\767\B9-B11\600\209b.doc Page 1
SECTION 1 - INTRODUCTION
Reed Resources Ltd (Reed Resources) are currently undertaking Definitive Feasibility Studies into the
development of a vanadium / titanium mine in the Barrambie area, located 80km northwest of Sandstone and
115km southeast of Meekatharra in the Murchison Region of Western Australia (Figure 1).
Reed Resources plan to mine approximately 3Mt of vanadium ore annually over an initial mine life of 12
years. The Barrambie deposit consists of a north pit and south pit. Comprehensive mineral resource
investigations have been conducted at the south pit, whilst mineral resource investigations have only recently
commenced at the north pit area. Both the south and north pits are proposed to be mined to 460mRL, some
25-30m below the local water table.
The objective of this report is to provide an assessment of pit inflows and mine dewatering requirements for
the Barrambie mine. This report includes:
• A description and outcomes of hydrogeological investigations.
• Prediction of pit inflows and assessment of dewatering options.
F:\Jobs\767\B9-B11\600\209b.doc Page 2
SECTION 2 - PHYSICAL SETTING
2.1 CLIMATE
The Murchison region experiences arid climate conditions with dry, hot summers and mild winters. Mean
maximum daily temperatures average between 19°C in July to 38°C in January. The long-term annual
average rainfall for Meekatharra during the 62 year period between 1944 and 2007 was 235.4mm.
Evaporation rates are high, typically over 200mm/month. Rainfall across the Murchison is highly variable
and is largely driven by cyclonic events and localised thunderstorms during the summer months.
2.2 GEOLOGY AND HYDROGEOLOGY
2.2.1 Geology
Barrambie lies within the Murchison Province, which is the westernmost of three granite-greenstone terranes
in the Archaean Yilgarn Craton. The underlying and surrounding bedrock comprises metamorphosed
sedimentary and igneous rock intruded by granite. Tertiary weathering has formed a lateritic profile over the
Archaean bedrock. The lateritic profile overlying granitic rocks typically consists of leached or kaolinitic rocks
overlain by a thin ferruginous cap. Metabasic and metasedimentary rocks are overlain by pisolitic laterite
over a reddish-brown mottled zone. The Proterozoic basement outcrops extensively in the area, but is
overlain in places by relatively thin Tertiary and Quaternary deposits which are associated with both current
and palaeo-drainages. Areas of calcrete are exposed in depressions between drainage divides and
drainage channels. The geology of the region is illustrated in Figure 2.
Barrambie is predominantly underlain by a heavily weathered, differentiated gabbro. Within this host
intrusion there exist several sub-vertical bands of magnetite rich mineralisation which are rich in vanadium
and titanium oxides.
2.2.2 Hydrogeology
The granitoids rocks consist of even-grained to porphyritic granite and adamellite, and are laterised and
deeply weathered up to approximately 30m thick. Groundwater can generally be sourced from the base of
the weathering profile, although open joints and fractures are known within the upper 5-10m of the fresh
bedrock (Department of Water, 2006).
The greenstone rocks comprise mafic and ultramafic volcanics, felsic volcanics, volcaniclastics and
metasedimentary rocks, including cherts and banded-iron formation. They occur in mainly north-south
trending belts throughout the area, and the project area is located on the Barrambie Greenstone Belt. These
rocks have a deep weathering profile which consists of dense clay, except over ultramafics which are capped
by vuggy silcrete. Small groundwater supplies are generally obtained from near the base of the weathered
zone and in the underlying fractured rocks (Department of Water, 2006).
Regional aquifers in the Murchison Province include fractured rock aquifers in the basement rock, karstic
features in calcrete and alluvial and palaeochannel aquifers. Groundwater flow systems in the area are
maintained by rainfall recharge, which is difficult to estimate due to high evaporation rates and plant
transpiration.
PHYSICAL SETTING
F:\Jobs\767\B9-B11\600\209b.doc Page 3
In the vicinity of the Barrambie mine area, the main aquifer system is fractured granitoid and greenstone
rocks.
Depth to water in the Barrambie project area averages 35 to 40m below ground level (mbgl).
F:\Jobs\767\B9-B11\600\209b.doc Page 4
SECTION 3 - FIELD INVESTIGATIONS
3.1 DRILLING RESULTS
A number of holes have been drilled in the Barrambie deposit area for mineral exploration purposes. A
review of available data from these exploration holes suggests that the geology in the mine area is relatively
low yielding, with water inflows intercepted at the base of the weathering profile and fracture zones. Airlift
tests could not be conducted on the existing drill holes because the majority of the holes were unstable and
collapsed over time due to the high clay content.
Eleven drilling locations were identified for the mine dewatering investigation: seven holes in the south pit
area, two holes outside of the south pit area and two holes in the north pit area. Drilling of the eleven holes
commenced on 5th August 2008 by Blue Spec Mining, using RC drilling techniques.
A summary of the bores drilled around the Barrambie mine area is provided in Table 1. The locations of the
drilled bores are shown in Figure 3, with borelogs presented in Appendix A.
Table 1 Summary of Mine Monitoring Bores
Hole No. Easting (GDA94)
Northing (GDA94) Drilled Date Drilled Depth
(m) SWL
(mbgl) Location
BWB01 710,600 6,961,200 6/08/2008 72 dry Main Pit Area
BWB02 710,250 6,961,800 6/08/2008 72 36 Main Pit Area
BWB03 709,900 6,962,800 7/08/2008 72 37.8 Main Pit Area
BWB04 709,800 6,963,300 7/08/2008 72 39 Main Pit Area
BWB05 709,500 6,964,300 7/08/2008 72 49 Main Pit Area
BWB06 709,000 6,965,000 7/08/2008 72 41.3 Main Pit Area
BWB07 708,750 6,965,500 8/08/2008 72 42 Main Pit Area
BWB08 709,100 6,964,500 8/08/2008 72 48.7 Outside Main Pit Area
BWB09 710,300 6,962,400 8/08/2008 72 35.5 Outside Main Pit Area
BWB10 708,041 6,967,430 8/08/2008 72 34 North Pit Area
BWB11 706,450 6,969,169 9/08/2008 72 37 North Pit Area
3.2 HYDRAULIC TESTING
Following completion of the drilling programme, airlift tests were attempted at each open drill hole to obtain
an estimate of aquifer yields. Bores BWB01, BWB02, BWB04, BWB05 and BWB11 were dry at completion
of drilling, therefore airlift tests were not conducted. Airlift tests on bores BWB03, BWB06, BWB07, BWB08,
BWB09 and BWB10 returned only low flows and went dry within a few minutes, therefore the tests were
terminated and the rate of water level recovery was recorded for up to 20 minutes.
In order to obtain estimates on aquifer permeability, the water level recovery data was analysed using
standard graphical techniques for rising head tests. Estimated permeabilities from the holes tested, range
from 0.1m/d to 0.95m/d, with an average permeability of 0.4m/d applied for the Barrambie mine area. This is
considered to be a conservative value given the number of “dry” holes that were drilled. A summary of the
rising head test analysis is provided in Table 2, with raw data and analysis results presented in Appendix B.
FIELD INVESTIGATIONS
F:\Jobs\767\B9-B11\600\209b.doc Page 5
Table 2 Summary of Rising Head Test Analysis
Hole No. Estimated
Permeability (K) (m/day)
Location
BWB03 0.13 South Pit Area
BWB06 0.11 South Pit Area
BWB07 0.95 South Pit Area
BWB08 0.5 Outside South Pit Area
BWB09 0.3 Outside South Pit Area
BWB10 0.11 North Pit Area
Due to limitations on available casing materials, the drill holes were not cased at the time of the drilling and
hydraulic testing. However, it is planned to install casing in six of the eleven holes for future use as
monitoring bores. In addition, due to the low aquifer yields during airlift testing, it was not possible to collect
water samples for groundwater quality analysis.
F:\Jobs\767\B9-B11\600\209b.doc Page 6
SECTION 4 - MINE DEWATERING REQUIREMENTS
4.1 MINE INFLOW ASSESSMENTS
Analytical modelling was undertaken to predict groundwater inflows to the Barrambie mine over the period of
the mining operation. The analytical modelling included using a lumped parameter analytical groundwater
flow model based on the Dupuit-Forchheimer equation for flow to a large diameter well in an unconfined
aquifer. As the pit length is much larger than the pit width, estimates of parallel flow were conducted along
the pit length using Darcy’s Law of groundwater flow through a porous medium. The ends of the pit are
represented by a large diameter well with equivalent area and volume, and the model approximates the
discharge (the sum of radial flow at the pit ends and parallel flow along the pit length) from the pit required to
maintain water levels at the base of the pit.
Current mine plans indicate that both the south and north pits will be mined down to 460mRL, which is
approximately 25-30m below the local water table. The pits will be mined in stages from Stage A to Stage F.
For the purposes of the analytical modelling, Stage E and F were incorporated into Stages A to D. The
layout of the proposed mine stages are shown in Figure 4.
Pit inflow calculations have been undertaken for the proposed southern pit, where most drilling and testing
data are currently available. It is assumed that the northern pit will be subject to similar inflows.
Pit inflows were predicted for each stage of the pit, based on the following “base case” hydraulic parameters
and the following assumptions:
• Base Case permeability (K) of 0.4m/d, as discussed in Section 3.2.
• Unconfined storage (Sy) of 0.5%
• Dewatering pumping will maintain groundwater levels within the pit at or below the pit floor.
• The radius of influence of pit inflows will continue to expand as the pit develops and will not intersect
any aquifer boundaries.
Sensitivity analysis was also carried out for variations in permeability and unconfined storage. The results of
the analytical modelling are summarised in Table 3.
Table 3 Summary of Predicted Pit Inflows
Model Run Permeability (K) (m/day)
Storage (Sy) (%)
Predicted Pit Inflow (kL/d)
Base Case 0.4 0.5 950kL/d increasing to 2,400kL/d
1.0 0.5 1,800kL/d increasing to 4,100kL/d Sensitivity
1.0 1.0 2,200kL/d increasing to 5,300kL/d
The results of the analytical modelling suggest that groundwater inflow into the proposed south and north
pits will range from around 950kL/d (11L/s) at Stage A increasing to around 2,400kL/d (28L/s) toward the
end of mining at each pit. As previously mentioned this approach used analytical, lumped parameter models
and the predictions can only be considered to represent average conditions. That is, there may be higher
inflows around larger fracture networks or where higher permeability horizons exist. The sensitivity analyses
were conducted in order to estimate “worst case” inflows at such zones.
MINE DEWATERING REQUIREMENTS
F:\Jobs\767\B9-B11\600\209b.doc Page 7
Given the nature of the aquifer system (low permeability, fractured rock) it will not be practical to develop a
viable or cost effective advanced dewatering system using perimeter dewatering bores. It is recommended
that mine dewatering be achieved through the use of in-pit sump pumping.
4.2 FINAL PIT VOID ASSESSMENT
Following the completion of mining, groundwater and direct rainfall will gradually fill each pit void to form a
permanent lake. The water level in the pit will rise until equilibrium between total pit inflows and evaporative
losses from the pit lake surface has occurred. This can take many years depending on aquifer parameters
and local evaporation rates.
An analytical iterative pit water balance model was used to predict the equilibrium pit lake level for the north
and south pits. The model was used to predict the water balance for a pit lake at each mine bench as water
levels rise at the completion of mining (and dewatering) to determine at which bench level total inflows were
balance by total outflows (i.e. evaporation). The water balance model can be simply expressed as:
Groundwater Inflow + Direct Rainfall = Evaporation Losses +/- Change in Storage
The following input information was used in the water balance model:
• Predicted long-term groundwater inflow rates at various bench levels were compared with bench by
bench pit volumes.
• Direct rainfall was applied using the long-term average annual rainfall total for Meekatharra
(235mm/annum), applied over the area of the pit footprint.
• Evaporation was calculated for each bench from the bench area, using annual potential
evapotranspiration figures published by the Bureau of Meteorology (2001) (1,400mm/annum).
Under base case conditions, the model predicts that pit lake levels will reach equilibrium at approximately
475mRL (i.e. approximately 15m above the pit floor and approximately 15m below the pre-mining water
level). The model predicts that it will take approximately 5 years for the pit water level to recover to 475mRL.
As long-term pit water levels will remain below pre-mining and regional water levels, the Barrambie pits will
act as a groundwater sink, with groundwater flow directions toward the pit, and evaporative losses being the
only outflow of water from the system.
4.3 IMPACTS OF MINE DEWATERING
The main impact of dewatering on local groundwater will be the development of a large cone of depression in
the water table around the Barrambie mine. However, the background permeabilites of the basement rocks
are low, resulting in relatively low predicted dewatering rates. Analytical modelling suggests that the
drawdown cone may extend up to 2km away from the pit. However, the depth to water is expected to reduce
with distance from the mine and water level drawdown is expected to be less than 2m at a distance of 1km
away from the mine.
In practice, water level drawdowns will be focussed along major fracture and joint planes.
F:\Jobs\767\B9-B11\600\209b.doc Page 8
SECTION 5 - CONCLUSIONS & RECOMMENDATIONS
5.1 CONCLUSIONS
• Eleven holes were drilled as part of the mine dewatering investigation in August 2008.
• Airlift recovery tests were conducted at BWB03, BWB06, BWB07, BWB08, BWB09 and BWB10.
Estimated permeabilities range from 0.1m/d to 0.95m/d, with an average permeability of 0.4m/d applied
for the Barrambie mine area.
• Using conservative aquifer parameters the results of the analytical modelling suggest that groundwater
inflow into the proposed south and north pits will range from around 950kL/d (11L/s) at the beginning of
mining increasing to around 2,400kL/d (28L/s) toward the end of mining, at each pit.
• The main impact of dewatering on local groundwater will be the development of a large cone of
depression in the water table around the Barrambie mine. Analytical modelling suggests that the
drawdown cone may extend up to 2km away from the pit. However, the depth to water is expected to
reduce with distance from the mine and water level drawdown is expected to be less than 2m at a
distance of 1km away from the mine.
• In the long-term it is anticipated that the final pit void will remain a groundwater sink with evaporative
losses greater than inflows and incident rainfall.
5.2 RECOMMENDATIONS
• Dewatering via in-pit sumps is likely to be the most practicable method of dewatering. However, if
higher yielding fractures are encountered during mining, it may be possible to opportunistically install
dewatering bores if required.
• Department of Water approval should be obtained prior to commencing dewatering, through an
application for a Licence to Take Water (S5C application).
• It is recommended that monitoring of groundwater levels at the recently installed monitoring bores be
undertaken on a quarterly basis to provide a baseline data set. Once dewatering and operations
commence at Barrambie, it is recommended that groundwater level monitoring bores be installed
around the perimeter of each pit and that groundwater level monitoring increase to monthly.
• In addition, it is recommended that a groundwater quality sample be collected from each of the cased
monitoring bore in the pit areas in order to provide baseline water quality data.
SECTION 6 - REFERENCE LIST
Bureau of Meteorology (2001). Climatic Atlas of Australia – Evapotranspiration. Commonwealth of Australia,
2001.
Department of Water (2006). Mid West Minerals Province – Groundwater Resource Appraisal.
Hydrogeological Record Series, Report No. HG17. August 2006.
F:\Jobs\767\B9-B11\600\209b.doc Page 9
FIGURES
LocationMap
KALGOORLIEPERTH
Figure 1Barrambie Mine Location Plan
Author: KH
Report No: 209
Projection: MGA 94 (Zone 50)
Revised:
Job No: 767B
Drawn: KH
Scale: 1:500,000
Date: 01/10/2008Project
A
SANDSTONESANDSTONESANDSTONESANDSTONESANDSTONESANDSTONESANDSTONESANDSTONESANDSTONE
BarrambieBarrambieBarrambieBarrambieBarrambieBarrambieBarrambieBarrambieBarrambie
F:\Jobs\767\MapInfo\B9-B11\209_Fig1.WOR
A
Legend
Barrambie Tenement
Barrambie Mine Site
Figure 2Barrambie Geology Plan
Author: KH
Report No: 209
Projection: MGA94 (Zone 50)
Revised:
Job No: 767\B11
Drawn: KH
Scale: 1:100 000
Date: 03/10/2008
720000 mE
720000 mE
720000 mE
720000 mE
720000 mE
720000 mE
720000 mE
720000 mE
720000 mE
710000 mE
710000 mE
71 0000 mE
710000 mE
710000 mE
710000 mE
710000 mE
710000 mE
710000 mE
6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN
6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN
700000 mE
700000 mE
700000 mE
700000 mE
700000 mE
700000 mE
700000 mE
700000 mE
700000 mE
111111111
222222222
333333333
444444444
555555555
666666666
777777777
888888888
999999999
101010101010101010
111111111111111111
F:\jobs\767\MapInfo\B9-B11\209_fig2.WOR
LocationMap
Project
KALGOORLIEPERTH
Legend
Barrambie Tenement
Barrambie minemonitoring bores
Figure 3 Monitoring Bore Location Plan
Author: KH
Report No: 209
Projection: MGA 94 (Zone 50)
Revised:
Job No: 767\B11
Drawn: KH
Scale: 1:75,000
Date: 02/10/2008
6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN6960000 mN
6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN6970000 mN
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
71 000 0 mE
111111111
222222222
333333333
444444444
555555555
666666666
777777777
888888888
999999999
101010101010101010
111111111111111111
F:\jobs\767\MapInfo\B9-B11\209_fig3.WOR
Location
Map
Project
KALGOORLIEPERTH
Legend
Barrambie Tenement
Barrambie minemonitoring bores
F:\Jobs\767\B9-B11\300\Mine Inflow\[206_Schedule Results.xls]Fig4
Barrambie South Pit - Mine StagesFigure 4
A
E
B
C
D
F
APPENDIX A
BARRAMBIE MINE BORELOGS
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB01
Reed Resources Barrambie
6/08/08
RSMBlue Spec Mining
N/A N/A
6/08/085.25"
South Pit
710600
6961200
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\ BWB01
Bore drilled dry
150mm Blank PVCsurface casing
Open hole
Depth: 72m
Ironstone: Biege/red gravel
Clay: Brown/red, gravel, grading intomagnetite
Magnetite: Silver/grey, medium grained,unfractured and unweathered
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB02
Reed Resources Barrambie
6/08/08
RSMBlue Spec Mining
36 mbgl Aug 08
6/08/085.25"
South Pit
710250
6961800
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\ BWB02
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Red-grey to Yellow-grey
Magnetite: Dark grey, fresh with 10%feldspar
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB03
Reed Resources Barrambie
7/08/08
RSMBlue Spec Mining
37.8 mbgl Aug 08
7/08/085.25"
South Pit
709900
6962800
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs BWB03
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Beige/white
METASEDIMENTS: Quartz, chlorite,pyroxene/amphibole, gold platy mica
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB04
Reed Resources Barrambie
7/08/08
RSMBlue Spec Mining
39 mbgl Aug 08
7/08/085.25"
South Pit
709800
6963300
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB04S BWB04
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Dark grey, brown, green, highlycompetent
Clay: Light grey, green, competent
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB05
Reed Resources Barrambie
7/08/08
RSMBlue Spec Mining
49 mbgl Aug 08
7/08/085.25"
South Pit
709500
6964300
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB05S BWB05
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: White to pink
Clay: Brown
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB06
Reed Resources Barrambie
7/08/08
RSMBlue Spec Mining
41.3 mbgl Aug 08
7/08/085.25"
South Pit
709000
6965000
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB06S BWB06
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: White
Clay: Beige to brown
METASEDIMENTS: Grey, fresh
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB07
Reed Resources Barrambie
8/08/08
RSMBlue Spec Mining
42 mbgl Aug 08
8/08/085.25"
South Pit
708750
6965500
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB07S BWB07
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Beige/red, competent
Clay: Brown/Grey, friable
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB08
Reed Resources Barrambie
8/08/08
RSMBlue Spec Mining
48.7 mbgl Aug 08
8/08/085.25"
Outside South Pit area
709100
6964500
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB08S BWB08
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: White.
METASEDIMENTS: Quartz, coarsegrained, light grey.
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB09
Reed Resources Barrambie
8/08/08
RSMBlue Spec Mining
35.5 mbgl Aug 08
8/08/085.25"
Outside South Pit Area
710300
6962400
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\ BWB09
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Beige/white
METASEDIMENTS: Quartz, chlorite,pyroxene/amphibole, gold platy mica
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB10
Reed Resources Barrambie
8/08/08
RSMBlue Spec Mining
34 mbgl Aug 08
8/08/085.25"
North Pit
710300
6962400
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB10N BWB10
No consistent waterdischarge during drilling
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
Clay: Red to Beige, soft
METASEDIMENTS: Grey, coarse grained,unweathered/unfractured
Well No:
Suite 4, 125 Melville ParadeComoWA 6152
Tel: (+61) (08) 9368 4044Fax: (+61) (08) 9368 4055
Australia
Client: Project:
Commenced:Completed:
Logged By:Drilled:
Static Water Level: Date:
Depth(mbgl)
Lithological Description
COMPOSITE WELL LOG
Field Notes
Method:Fluid:Bit Record:
Diagram Notes
Area:East:
North:Elevation:
Well CompletionGraphicLog
File Ref: Well No:
0
10
20
30
40
50
60
70
BWB11
Reed Resources Barrambie
9/08/08
N/ABlue Spec Mining
37 mbgl Aug 08
9/08/085.25"
North Pit
706450
6969169
Conventional HammerAir
F:\Jobs\767\B9-B11\300\Borelogs\Logplot_data\MB11N BWB11
No consistent waterdischarge during drilling
Lithology not logged
150mm Blank PVCsurface casing (0-3m)
Open hole
Depth: 72 mbgl
APPENDIX B
RISING HEAD TEST DATA & ANALYSIS
RISING HEAD TEST
Bore No: MB3 Test No: #1 Job No: 767/B10 Date: 09-08-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 709900 Northing: 6962800 Collar elevation (m):Depth to top of test section (m): 37.79 Length of test section, L (m): 34.21Depth of static water level, Hw (m): 37.79 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -11.42 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)2.0 49.21 -11.42 1.002.5 47.77 -9.98 0.873.0 47.53 -9.74 0.854.0 45.95 -8.16 0.715.0 44.27 -6.48 0.576.0 43.05 -5.26 0.467.0 42.62 -4.83 0.428.0 41.81 -4.02 0.359.0 40.80 -3.01 0.26
10.0 40.32 -2.53 0.2212.0 39.4 -1.61 0.1414.0 38.85 -1.06 0.0916.0 38.31 -0.52 0.05
18 37.98 -0.19 0.0220 37.79 0 0.00
Calculations: h1 1.00t1 2.0h2 0.09t2 14.0S 8.6E-02
k 1.49E-06
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.01
0.10
1.00
0 2 4 6 8 10 12 14 16 18 20
Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)
RISING HEAD TEST
Bore No: MB6 Test No: #1 Job No: 767/B9-B11 Date: 10-Aug-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 709000 Northing: 6965000 Collar elevation (m):Depth to top of test section (m): 41.29 Length of test section, L (m): 30.71Depth of static water level, Hw (m): 41.29 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -6.40 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)1.0 47.69 -6.40 1.001.5 46.96 -5.67 0.892.0 46.78 -5.49 0.862.5 46.56 -5.27 0.823.0 46.35 -5.06 0.794.0 45.80 -4.51 0.705.0 45.14 -3.85 0.606.0 44.59 -3.3 0.527.0 44.13 -2.84 0.448.0 43.63 -2.34 0.379.0 43.33 -2.04 0.3210 42.95 -1.66 0.2612 42.3 -1.01 0.1614 41.92 -0.63 0.1016 41.57 -0.28 0.0418 41.29 0 0.00
Calculations: h1 0.79t1 3.0h2 0.26t2 10.0S 6.9E-02
k 1.33E-06
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.01
0.10
1.00
0 2 4 6 8 10 12 14 16 18 20
Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)
RISING HEAD TEST
Bore No: BWB7 Test No: #1 Job No: 767/B9-B11 Date: 10-Aug-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 708750 Northing: 6965500 Collar elevation (m):Depth to top of test section (m): 41.95 Length of test section, L (m): 30.05Depth of static water level, Hw (m): 41.95 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -1.92 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)1.0 43.87 -1.92 1.001.5 42.90 -0.95 0.492.0 42.40 -0.45 0.232.5 42.24 -0.29 0.153.0 42.11 -0.16 0.084.0 41.99 -0.04 0.025.0 41.95 0 0.006.0 41.95 0 0.00
Calculations: h1 1.00t1 1.0h2 0.02t2 4.0S 5.6E-01
k 1.10E-05
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.01
0.10
1.00
0 1 2 3 4 5 6
Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)
RISING HEAD TEST
Bore No: BWB8 Test No: #1 Job No: 767/B9-B11 Date: 10-Aug-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 709100 Northing: 6964500 Collar elevation (m):Depth to top of test section (m): 48.65 Length of test section, L (m): 23.35Depth of static water level, Hw (m): 48.65 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -0.10 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)1.5 48.75 -0.10 1.003.0 48.71 -0.06 0.603.5 48.69 -0.04 0.404.5 48.68 -0.03 0.305.0 48.67 -0.02 0.206.0 48.66 -0.01 0.10
Calculations: h1 1.00t1 1.5h2 0.10t2 6.0S 2.2E-01
k 5.63E-06
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.01
0.10
1.00
0 1 2 3 4 5 6 7 8 9 10Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)
RISING HEAD TEST
Bore No: BWB9 Test No: #1 Job No: 767/B9-B11 Date: 10-Aug-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 710300 Northing: 6962400 Collar elevation (m):Depth to top of test section (m): 35 Length of test section, L (m): 33.1Depth of static water level, Hw (m): 35 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -14.86 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)2.0 49.86 -14.86 1.002.5 47.95 -12.95 0.873.0 45.00 -10 0.673.5 43 -8 0.544.0 41.54 -6.54 0.44
5 39.27 -4.27 0.296 37.57 -2.57 0.177 36.9 -1.9 0.138 36.22 -1.22 0.089 35.82 -0.82 0.06
10 35.65 -0.65 0.0412 35.59 -0.59 0.04
Calculations: h1 1.00t1 2.0h2 0.06t2 9.0S 1.8E-01
k 3.21E-06
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.01
0.10
1.00
0 2 4 6 8 10 12
Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)
RISING HEAD TEST
Bore No: BWB10 Test No: #1 Job No: 767/B9-B11 Date: 10-Aug-08 Logged by: RM Analysed by: AB
Borehole co-ordinates: Easting: 710300 Northing: 6962400 Collar elevation (m):Depth to top of test section (m): 34 Length of test section, L (m): 36.05Depth of static water level, Hw (m): 34 Radius of borehole, r (m): 6.67E-02Excess head, he (m): -10.60 Radius of standpipe or casing, rc (m): 6.67E-02
Time Depth to Excess head, ht/he
water, hw ht=Hw-hw
(min) (m) (m)1.0 44.60 -10.60 1.002.0 43.83 -9.83 0.933.0 41.54 -7.54 0.713.5 41.15 -7.15 0.67
5 39.1 -5.1 0.486 38.2 -4.2 0.407 37.78 -3.78 0.368 37.35 -3.35 0.329 36.9 -2.9 0.27
10 36.67 -2.67 0.2512 36.36 -2.36 0.2214 36.02 -2.02 0.1916 35.95 -1.95 0.18
Calculations: h1 0.93t1 2.0h2 0.27t2 9.0S 7.6E-02
k 1.24E-06
Permeability, k = 0.133 x S x (rc2/L) (m/sec)where S = (log (h1/h2)/(t2 - t1), (ie slope of plot, t in mins)
Head - time graph (slope of graph is S)
Notes:
0.10
1.00
0 2 4 6 8 10 12 14 16 18 20
Time (min)
ht/
he
F:\Jobs\767\B9-B11\300\200_Barrambie_mine_RHT.xls Checked by: KH (16/09/08)