Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
GROUNDWATER MODEL DEFINITION
FIGURE 1
Job no: B18183/2-AC
Whites Void
Intermidiate Void
Proposed Mine Site
N
4000 m
Bore location
LEGEND:
Scale
NO FLOW BOUNDARY
NO FLOW BOUNDARY
CONSTANT HEAD BOUNDARY
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
SURFACE CONTOURS
FIGURE 2
Job no: B18183/2-AC
N
4000 m
62
LEGEND:
Surface Level (mAHD)
Scale
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
STEADY STATE GROUNDWATER LEVELS - CALIBRATION
FIGURE 3
Job no: B18183/2-AC
N Whites Void
Intermediate Void
Proposed Mine Site
4000 m
62
LEGEND:
Groundwater Level (mAHD)
Scale
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
CALIBRATION COMPARISON
FIGURE 4
Job no: B18183/2-AC
56
57
58
59
60
61
62
63
56 57 58 59 60 61 62 63
Observed Head [m]
Co
mp
ute
d H
ead
[m
]
Feb-06 Mar-06 Apr 2006 May-06
Jun-06 Jul-06 Aug-06 Sep-06
Oct-06 Nov-06 Dec-06
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
TEST PIT PUMPING, COMPUTED DRAWDOWN IN SEPTEMBER 2002, INITIAL TRIAL
FIGURE 5
Job no: B18183/2-AC
Limit of Whites Formation
N
500 m
0.75
Bore location
LEGEND:
Drawdown [m]
TPB 1
TPB 3
TPB 2
3137
Test Pit
3515
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
10 April 2006
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
TEST PIT PUMPING, DRAWDOWN IN SEPTEMBER 2002 (‘Impregnated Dolomite’: T= 40 m2/day)
FIGURE 6
Job no: B18183/2-AC
N
500 m
0.75
Bore location
LEGEND:
Drawdown [m]
TPB 1
TPB 3 TPB 2
3137
‘Impregnated Dolomite’ Kf = 40 m2/day
S = 0.01
Test Pit
3515
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
12 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL POSSIBLE PIT LAYOUT
FIGURE 7
Job no: B18183/2-AC
N
LEGEND:
Ground surface (mAHD)
RL45 Pit floor level (mAHD)
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
12 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
MODELLED AVERAGE GROUNDWATER LEVELS (MINE OPERATES AT FULL DEPTH FROM THE OUTSET)
FIGURE 8
Job no: B18183/2-AC
N
500 m
34
Groundwater Flow
LEGEND:
Groundwater Level [mAHD]
East Finniss River
Browns Oxide Mine Intermediate Mine Void
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
12 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
MODELLED FLOW RATES (MINE OPERATES AT FULL DEPTH FROM THE OUTSET)
FIGURE 9
Job no: B18183/2-AC
N
500 m
63 L/s
LEGEND:
Flow Rate ( -ve indicates flow reduction)
East Finniss River
Browns Oxide Mine
Intermediate Mine Void
1 L/s
3 L/s
0 L/s
12 L/s
163 L/s
63 L/s
20 L/s32 L/s Intermediate Pond:
-103 L/s
East Finness River: - 218 L/s
Proposed Browns Oxide Mine:294 L/s
1 L/s
3 L/s
0 L/s
12 L/s
163 L/s
63 L/s
20 L/s32 L/s Intermediate Pond:
-103 L/s
East Finness River: - 218 L/s
Proposed Browns Oxide Mine:294 L/s
2 4
2
6
8
10
2 4
2
6
8
10
Coffey Geosciences Pty Ltd ACN 056 335 516 Geotechnical l Resources l Environmental l Technical l Project Management
Drawn
Approved
Date
Scale
DB
RB
12 April 2006
As shown
COMPASS RESOURCES NL BROWNS OXIDE PROJECT GROUNDWATER MODEL
MODELLED AVERAGE DRAWDOWN (MINE OPERATES AT FULL DEPTH FROM THE OUTSET)
FIGURE 10
Job no: B18183/2-AC
N
2000 m
4
LEGEND:
Drawdown [m]
East Finniss River
Browns Oxide Mine Intermediate Mine Void
B18183/2-AC
13 April 2006
1
APPENDIX A
Mineralisation Study Results Provided By Compass Resources
98BD31
02BD04
DD171 97BD11
97BD8
98BD48
58B48
01BD02
BAU1
BG1
DD87
DD150
DD151
DD154
DD156
DD157
DD160
DD163
DD165DD170
DD172
DD180
DD182
DD195
DD196
DD197
DD208
DD336DD356
DD728
DD731
56B1
56B2
56B3
56B4
56B556B6
56B7
56B8
56B9
56B10
56B11
56B12
56B13
4 56B15A
6B16
56B17
56B19
56B20
56B21
56B22
57B2357B24
57B25
57B26
57B27
57B28
57B29
57B30
57B31
57B32
57B33
57B34
57B35
57B36
57B37
57B38
57B39
57B41
57B42
57B43
57B44
57B45
57B46
57B47
60B49
61B50
65B51
65B52
65B5365B53
71B58
71B60
78BD65
90BD1
90BD2
90BD3
90BD4
90BD5
94BD194BD2
94BD3
94BD4
94BD5
94BD6
94BD7
94BD8
94BD9
94BD10
94BD11
94BD1294BD13
94BD1494BD15
94BD16
94BD1794BD19
94BD20
95BD1
95BD2
95BD3
95BD4 95BD595BD6
95BD7
95BD8
95BD9
95BD1095BD11
95BD12
95BD1395BD14
95BD1595BD16
95BD17
95BD1895BD19
96BD1
96BD2
96BD3
96BD4
96BD5 96BD6 96BD7 96BD8 96BD9 96BD1096BD1196BD12
96BD13
96BD14
96BD15
96BD16
96BD17
96BD18
96BD19
96BD20
96BD21
96BD2296BD2396BD24
96BD25
96BD26
96BD27
96BD28
96BD29
96BD30
96BD3196BD32
96BD33
96BD34
96BD35
96BD3696BD37
96BD38
96BD39
96BD40
96BD41
96BD42
96BD4396BD44
96BD45
96BD4696BD48
96BD49
96BD50
96BD5196BD52
96BD5396BD54
96BD5596BD56
96BD57
96BD58
96BD5996BD60
96BD61
96BD62
96BD63
96BD64
96BD6596BD66
96BD67
96BD6896BD6996BD70
96BD71
96BD7296BD7396BD7496BD7596BD7696BD7796BD7896BD79
96BD80
96BD81
96BD82
96BD83
96BD84
96BD8596BD86
96BD87
96BD88
96BD89
96BD90
96BD91
96BD92
96BD9396BD94
96BD9596BD96
96BD9796BD9896BD99
96BD10096BD101
96BD102
96BD103
96BD104
96BD10596BD106
96BD10796BD108
96BD109
96BD110
96BD111
96BD112
96BD113
96BD114
96BD115
96BD116
96BD117
97BD1
97BD2
97BD3
97BD4
97BD5
97BD6
97BD797BD9
97BD10
97BD12 97BD1397BD14
97BD15
97BD16
97BD1797BD18
97BD19
97BD20
97BD21
97BD22
97BD2397BD24
98BD1
98BD2
98BD3
98BD4
98BD5
98BD6
98BD7
98BD8
98BD9
98BD10
98BD11
98BD12
98BD13
98BD14
98BD15
98BD16
98BD17
98BD18
98BD19
98BD20
98BD21
98BD2298BD23
98BD24
98BD25
98BD26
98BD27
98BD28 98BD29
98BD30
98BD34
98BD3598BD38
98BD39
98BD4198BD42
98BD43
98BD45
98BD46
98BD47 98BD49
98BD50
98BD51
98BD52
98BD53
98BD54
98BD55
98BD56
98BD5798BD58
98BD59
98BD60
98BD61
98BD62
98BD63
98BD6498BD65
98BD66
98BD6798BD68
98BD69
98BD70
98BD71
98BD72
98BD73
98BD74
CDH1
CDH2
CDH3
CDH4
CDH5
CDH7
CDH8
CDH9
00BD1
00BD2
00BD3
00BD4
00BD5
00BD6
00BD700BD8
00BD10
00BD11
00BD12
00BD1800BD1900BD2000BD21
00BD30
00BD32
01BD01 01BD03
02BD01
02BD02 02BD0302BD05
02BD06
02BD07
02BD08
02BD09
03BD01
04BD01
04BD02
04BD02
04BD04
04BD0504BD06
04BD07
04BD08TPB1
TPB2
TPB3
05BD0105BD0205BD0305BD04
05BD05
05BD06
05BD07
05BD08
05BD09
05BD10
05BD11
05BD12
05BD13
05BD14
05BD1505BD1605BD17
05BD18
05BD19
05BD20 05BD21
05BD22
05BD23
05BD24
05BD25
05BD26
05BD27
05BD28
05BD2905BD3005BD31
05BD32
05BD3305BD34
05BD35
05BD36
05BD37
05BD38
05BD3905BD40
05BD41
05BD42
05BD43
05BD4405BD45
05BD46
05BD47
05BD48
05BD49
05BD50
05BD5105BD52
05BD53
05BD54 05BD55
05BD56
05BD5705BD58
05BD59
05BD60
05BD61
05BD62
B18183/2-AC
13 April 2006
2
APPENDIX B
Water Quality Test Results
Pre-remediationSite TPB 1 TPB 2 TPB 3 RN22107 RN22108 RN22108 RN22107 RN22108
Sampling depth 10 m 10 m 10 m 15 m 25 m 50 m Date 16/03/2010 16/03/2010 16/03/2010 16/03/2010 16/03/2010 16/03/2010 18/8/83 30/11/83 22/8/83 30/11/83
Weathered carbonate aquifer
Weathered Whites formation/carbona
te contact Fault zoneParameter UnitEC µS/cm 408 2,970 107 2,110 4,480 4,710 4,940 5,330 3,660 3,640pH units 6.8 9.3 7.1 6.0 6.5 6.5 7 6 6 6Alkalinity mg/L 45 17 42 55 229 251 71 30NO3_N mg/L 0.735 <0.005 <0.005 1.93 <0.005 <0.005Cl mg/L 2.2 56 1.7 19.5 75 79.7 110 105 50 55SO4_F mg/L 149 1880 10.1 1300 2990 3180 3,685 3,770 2,615 2,330Ca_F mg/L 20.9 157 4.4 163 347 362 390 391 285 260Mg_F mg/L 34.5 384 9.1 232 649 720 684 724 488 486Na_F mg/L 4.3 34.1 1.5 22.1 58.1 61.7 46 100 35 32K_F mg/L 1.2 8.3 1.6 3.6 6.9 7 3 5 7 6
Ag_F µg/L 0.1 <0.5 <0.05 <0.5 <0.5 <0.5Al_F µg/L 0.5 <1 2.2 108 3.6 3.2As_F µg/L 2.35 3.55 8.2 2.65 171 412Cd_F µg/L 0.16 <0.2 <0.02 4.18 0.48 0.38Co_F µg/L 5.93 0.82 1.48 4,720 1,780 1,700 3,500 3,900 5,200 46,000Cr_F µg/L 0.1 <2 <0.1 <2 <2 <2Cu_F µg/L 48.4 0.38 0.07 3,040 15.6 14.3 2,800 7,600 10,000 8,500Fe_F µg/L <20 <200 3,320 1,560 4,060 9,440Hg_F µg/L <0.02 <0.2 <0.02 <0.2 <0.2 <0.2Mn_F µg/L 15.3 757 248 49,000 13,200 14,500 108,000 113,000 24,000 20,000Ni_F µg/L 51.3 0.71 1.48 3,450 846 794 3,400 4,400 4,600 47,000Pb_F µg/L 0.29 0.14 0.31 28.9 4.05 4.5U_F µg/L 0.07 0.02 0.08 17 65.6 101Zn_F µg/L 31.8 6.2 1.9 2,220 181 152 3,100 2,400 2,240 2,300
B18183/2-AC
13 April 2006
APPENDIX C
Information provided by Mr Peter Jolly, Government consultant to the EPA