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Prepared forWolfden Resources Inc.
Submitted byGartner Lee Limited
In association with
Northwest Hydraulics Consultants
October 2006
High Lake Water Quality Model
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High Lake Water Quality Model
Prepared for
Wolfden Resources Inc.
October 2006
Reference: GLL 411151
Distribution:
1 Wolfden Resources Inc.
2 Gartner Lee Limited
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Page
1 Introduction........................................................................................................................1
2 Model Configuration .........................................................................................................12.1 Water Quantity.................................................................................................................... 22.2 Water Quality...................................................................................................................... 32.3 Model Output...................................................................................................................... 4
3 High Lake Water Quality Model......................................................................................4
3.1 Hydrological Assumptions ................................................................................................. 63.2 Key Model Component Description and Assumptions....................................................... 7
3.2.1 Combine Mill Effluent........................................................................................... 73.2.1.1 High Lake Tailings................................................................................. 73.2.1.2 West Zone U/G Mine Water: ................................................................. 93.2.1.3 Sewage ................................................................................................. 10
3.2.1.4 Combined L20 Effluent........................................................................ 103.2.2 Residual Natural Drainage................................................................................... 113.2.3 Backfill and Ore Stockpile Areas ........................................................................ 133.2.4 Mine Water Inputs ............................................................................................... 153.2.5 Open Pits (M18 to M21)...................................................................................... 183.2.6 Nutrient Loading from Explosives ...................................................................... 193.2.7 High Lake Discharges.......................................................................................... 19
4 Model Output ...................................................................................................................21
List of Figures
Figure 2.1-1 Stella Object Icons ................................................................................................................... 2
Figure 3.1-1 Sub-basin Model Components for the High Lake Water Quality Model................................. 5
List of Tables
Table 2.3-1 Summary of High Lake Sub-Basin Drainage Areas and Characteristics .................................. 4
Table 3.1-1 High Lake Baseline Mean Annual Precipitation, Evaporation and RunoffDistributions.............................................................................................................................. 6
Table 3.1-2 Hydrological Assumptions for Drought, Wet, and MAP +/- 5% .............................................. 6
Table 3.2-1.High Lake Tailings Production ................................................................................................. 7
Table 3.2-2.High Lake Ore Production ........................................................................................................ 9
Table 3.2-3 Predicted Inflows from the West Zone Underground Mine.................................................... 10
Table 3.2-4 Estimated Concentrations of Parameters Controlled by pH in the Combined Effluent .......... 10
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Table 3.2-5 Annual Volume Reclaim to the Mill ....................................................................................... 20
Table 3.2-6 Summary of Estimated Groundwater Leakage Rates through the High Lake Talik ............... 21
Appendices
A. Results from Bench Scale Flotation Tests
B. Model Water Quality Input Data
C. Average Flow Scenario Model Output
D. Drought Scenario Model Output
E. Low Scenario Model Output (MAP+5%)
F. Wet Scenario Model Output
G. High Scenario Model Output (MAP-5%)
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1 Introduction
The High Lake Water Quality Model was developed, using Stella modeling software, to facilitate the
assessment of the impacts of the High Lake Project on High Lake itself, and the receiving environment.
The model was designed to simulate all the mining related water releases to High Lake, and to predict the
water quality in High Lake and any subsequent discharge water to the Kennarctic River during mine
operations, closure, and post closure (to Year 150). Outflows from the High Lake system were also
modelled, including reclaim water withdrawal to the process plant, groundwater losses and discharge to
the Kennarctic River. The model was run for five different hydrological scenarios: average flow
conditions (Mean Annual Precipitation (MAP) of 280 mm), drought conditions, wet conditions and MAP
plus and minus 5%. This document contains the following supporting information for the High Lake
Water Quality Model: Model configuration;
Model input assumptions and data; and
Model output in tabular and graphical format.
2 Model Configuration
Stella is an object orientated programming environment. Programming in Stella is done using graphical
icons rather than line by line code in traditional programming languages such as FORTRAN. Interpretingand understanding a Stella model requires only a basic understanding of the fundamental objects.
The four fundamental building block objects in Stella are Stocks, Flows, Converters and Connectors.
Figure 2.1-1 shows examples of the icon described below:
Stocks are accumulations that collect inflows less outflows. Stocks are represented as rectangle icons
in the model.
Flows fill and drain Stocks. Flows are represented as pipes with an arrowhead and a valve in the
middle. The unfilled arrow head represents the positive direction of flow. A little cloud appears at the
head or tail of a flow if that end is not connected to a stock. A cloud next to the tail represents a
source to the system while a cloud near the head represents a sink in the system.
Converter are represented as circular icons. They fulfill multiple roles in Stella including:
- Constants;
- External data inputs;
- Calculators (algebraic and logical); and
- Graphical relationships.
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Connectors link stocks, flows and converters to flows or converters. A connection indicates that the
receiving flow or converter is calculating its own value using the value of the linked object in some
way. Connectors are represented as thin solid wires in the model layout.
Figure 2.1-1 Stella Object Icons
2.1 Water Quantity
In the water balance portion of the model there are three stocks representing the volume filled in High
Lake, AB pit and D pit. These stocks track the combined volume of water and deposited tailings in the
lake and pits. Elsewhere in the model are stocks that track only the volume of tailings solids that are
deposited in the lake and pits. Thus, the difference between the total volume and tailings volume is equal
to the volume of water in the respective stocks. In each of High Lake, AB Pit and D Pit, additional water
is assumed to be trapped as pore water in the voids in the settled solids: pore lock out. It is assumed that
the deposited tailings fill the stocks from the bottom up and a level tailings surface is maintained. All
tailings solids once deposited remain trapped and none are reintroduced back into the water column in
suspension or spilled with outlet water. Bathymetric data relating volume to elevation and surface area for
High Lake, AB pit and D pit are incorporated into the model enabling water elevation, settled tailings
elevation and surface area to be determined for each model time step. The following summarizes the
assumptions used when modelling High Lake, and the AB and D Zone Pits.
High Lake
The lake is set to an initial volume equal to the average volume of water at the full natural elevation,
approximately 7 million m3. Once the model commences running, it is assumed that the dams have been
constructed increasing the total storage capacity from 7 million m3 at 283 masl to approximately 11
million m3at 288.5 masl. Mill effluent (including tailings solids and supernatant, deep groundwater from
the West Zone underground mine, sewage and mill area runoff) is deposited in High Lake from the
beginning of the project until the AB Pit is available for deposition in Year 7. The mill effluent is againrouted to High Lake towards the end of Year 10 once the AB Pit has been filled. While the AB Pit is
being filled with tailings solids, the supernatant water and local runoff water are routed to High Lake.
Natural runoff from the immediate High Lake drainage area is also routed to High Lake.
During the first 2 years of operations, High Lake will be filling with tailings solids and inputs from the
various loading sources, but no water will be discharged (spilled) to the receiving environment until the
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water level surface approaches 288.5 masl. Spilling only occurs during the open water season, June to
September. During this time the volume to be spilled is calculated based on the natural stage-discharge
relationship which was adjusted to account for the raised outlet elevation. Additional pre-emptive releases
draw down the lake further during the summer to provide capacity for mining inputs that will continue
throughout the winter. The additional draw down is distributed over the open water season (June to
September)at a monthly distribution similar to the natural runoff.
AB Pit
Initially there is no storage in the AB Pit until after Year 6 when tailings begin to be deposited. At that
time, it is assumed that the pit is completely excavated, thus the initial volume is set at 0 and the storage
capacity is equal to the pit void (3.7 million m3). During Year 1 to 6, only water from direct precipitation
and runoff enter the pit. This water is routed to High Lake. While AB Pit is being filled with tailings, the
supernatant water and local runoff water are pumped immediately back to High Lake. Once AB Pit is full
(Year 10), it is assumed it is filled entirely with tailings solids and then capped with rock.
D Pit
Initially there is no storage in D Pit until Year 12 when mill effluent begins to be deposited. At that time,
it is assumed that the pit is completely excavated, thus the initial volume is set at 0 and the storage
capacity is equal to the pit void (2.1 million m3). During Year 1 12, when the pit and associated
underground are being mined, only water from direct precipitation and runoff enters the pit. This water is
routed to High Lake. While D-Pit is being filled with mill effluent, the supernatant water and local runoff
accumulates in the pit as water cover on top of the settled tailings. Once the surface water elevation
reaches the outlet elevation of the pit, water spills seasonally to High Lake.
2.2 Water Quality
The water quality component of the model was built as an accessory to the water balance model for the
High Lake Project. Water quality concentrations were determined for all of the runoff areas and mine
operations inputs to the High Lake system, and were used in conjunction with the flows from the water
balance portion of the model. The product of the water flows (m3/month) and the associated water quality
concentration (grams/m3or mg/L) results in mass flows of the water quality parameters (grams/month).
AB pit is modeled as never accumulating water and therefore no water quality accumulates. The water
quality in High Lake and D pit are represented as simple constantly stirred reactor tanks (CSTR) which
means all of the water within them has a homogenous water quality and that any water which is spilled isof that same quality. Water quality simulations were performed for 49 different parameters including
organics, cyanides and metals. All water quality parameters were assumed to be conservative ignoring
any precipitation, speciation or degradation.
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2.3 Model Output
The model runs on a monthly time step with computations to be performed at 4 sub-intervals per month
(approximately weekly). The model output is exported to EXCEL and includes for each time step:
Monthly mass flows (grams) for water quality parameters;
Monthly water flow (mg/L);
Monthly cumulative mass for water quality parameters in High Lake and D Pit; and
Monthly water and tailings surface elevation in High Lake, AB and D Pit.
3 High Lake Water Quality Model
The entire High Lake basin was divided into sub-basins to enable water balance and water quality issues
to tracked at different locations (Figure 3.1-1). The drainage areas of each of these sub-basins are
presented in Table 3.1-1.
Table 2.3-1 Summary of High Lake Sub-Basin Drainage Areas and Characteristics
Model Component Description Area m2
High Lake surface area 824,694
M1 High Lake Natural Area Low Metals 453,827
M2 High Lake Natural Area Elevated
Metals
49,456
M3 L17 Local Runoff Area 32,964
L21 thru L24 Lake Area 120,572
M5 L21 thru L24 Land Area 482,393
M4 Upper L19 and L17 Area 195,384
M6 HL Ore Stockpile Area 4,218
M7 Backfill Stock Pile Area 61,955
M8 AB zone waste dump area 202,709
M9 DT zone waste dump area 67,094
M10 DPT zone waste dump area 20,656
M11 DP zone waste dump area 42,147
M15 Natural Residual L20 Drainage Area 170,250
M18/19 AB pit area 94,058
M20/21 D pit area 72,310
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3.1 Hydrological Assumptions
The hydrologic calculations used for land surfaces and lake surfaces in the water balance model are
summarized below:
Land Runoff (volume): Precipitation (depth) * Surface area (area) * Runoff Factor (unitless);
and
Surface Flux (volume): (Precipitation (depth) - Evaporation (depth))* Water Surface area (area).
Table 3.1-1 summarizes the hydrologic input assumptions for the baseline conditions. The runoff
coefficients used for each sub-basin vary and are discussed individually in the following sections for each
sub-basin. In addition to the average flow model, four additional hydrologic scenarios were evaluated:
drought, wet scenarios and mean annual precipitation (MAP)+/- 5%. Details of the hydrological
assumptions for the scenarios are presented in Table 3.1-2.
Table 3.1-1 High Lake Baseline Mean Annual Precipitation, Evaporation and Runoff Distributions
Precipitation Evaporation
Mean Annual Total 280 mm 240 mm
Monthly Distribution Runoff Evaporation
June 44% 16%
July 28% 43%
August 16% 35%September 19% 6%
October 3% 0%
Table 3.1-2 Hydrological Assumptions for Drought, Wet, and MAP +/- 5%
Scenario Year Annual Precipitation (mm)
Year 10 216
Year 11 198
Year 12 240
Drought
All other
years280
Year 10 344
Year 11 360
Wet
All other
years240
MAP +5% All years 294
MAP 5% All years 266
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3.2 Key Model Component Description and Assumptions
3.2.1 Combine Mill Effluent
Mill tailings, solids and supernatant, deep groundwater from the West Zone underground mine, sewage,
runoff from buildings and roads around the process plant, and residual drainage from the L20 catchment
will be routed together as a combined mill effluent.
3.2.1.1 High Lake Tailings
Mill tailings will be discharge year round to either High Lake or the AB or D Zone Pits, along with the
camp sewage, water from the L20 drainage and runoff from the mill area. The tailings will be discharged
to High Lake from Years 1 to 6, Years 7 to 12 (June) to AB Pit and then Years 12 (July) to 14 to D Pit.The rate of tailings production is presented in Table 3.2-1 and is based on the overall waste rock, ore and
tailings material balance presented in Table 4.2-4 in Volume 2, Section 2.4 (Project Description). The
tailings slurry is estimated to be 55% water and 45 % solids by weight (Volume 9, Section 1.3). The
density of the High Lake tailings solids was conservatively set to 1.36 tonnes/m3which represents the
average of tailings solids density used for tailings impoundment sizing. This value was used to calculated
input volume and settled solids volume.
Table 3.2-1. High Lake Tailings Production
Year Tailings Production
(tonnes)
Tailings Solid Volume
(m3)
Tailings Supernatant
Volume (m3)
1 980,146 57118 99830
2 1,309,192 76293 133344
3 1,294,618 75444 131859
4 1,287,490 75029 131133
5 1,286,582 74976 131041
6 1,306,750 76151 133095
7 1,303,551 75964 132769
8 1,310,963 76396 133524
9 1,306,324 76126 133051
10 1,300,126 75765 132420
11 1,097,441 63953 111776
12 1,099,293 64061 111965
13 1,099,293 64061 111965
14 372,817 21726 37972
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The predicted water quality for the tailings supernatant has been calculated based on the effluent quality
measured in supernatant samples generated in a series of flotation tests carried out on samples of ore
from each of the target zones carried out by G&T Metallurgical Services Ltd. The full report of the
testing program and results is presented in Appendix A. Samples of the tailings supernatant were taken
after allowing the tailings slurry to settle for a period of 24 hours and were sent to Vizon SciTech and
CanTest for toxicity testing and chemical analysis. A summary of the analytical results is also presented
in Appendix A.
Two toxicity tests were carried out on each sample: rainbow trout 96 hour LC50and Daphnia magna48
hour LC50. The Daphnia magnawas carried out using the following concentrations: 1, 3, 10, 30, 100%
(v/v). In the sample originating from the AB Zone sample (Test 4), there was 1/10 dead in the 100% and
none dead in the other treatments. In the D Zone sample (Test 5), there was no mortality in any
treatment. In the West Zone sample (Test 6), there was 10/10 mortality in the 100% concentration, and
0/10 in the 30% concentration. The pH in the 100% concentration was 11.3 at test initiation, and 8.8 attest completion. The pH in the 30% concentration was 9.8 at test initiation and 7.9 at test completion. The
elevated pH may account partially for the results of this test.
For rainbow trout 96 hour LC50, smaller pickle jar test were run where 3 fish were added to 4 L of
sample, due to the limited amount of sample volume. After the 96 hour period there was is 1 live fish in
the AB Zone sample, 3 live fish in the D Zone sample, and no live fish in the West Zone sample. It should
be noted that for the AB Zone test, the two fish died in the first 24 hours. On the last day of the test, the
aeration stopped overnight and two of the control fish died. All of the test fish in the West Zone sample
test died on the same day of test initiation (
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Table 3.2-2. High Lake Ore Production
Year Total Ore Mined(tonnes)
Percent AB Zone Ore Percent D Zone Ore Percent West OreZone Ore
1 1,109,464 100% 0% 0%
2 1,440,000 100% 0% 0%
3 1,440,000 36% 56% 8%
4 1,440,000 30% 31% 39%
5 1,439,923 14% 24% 63%
6 1,440,004 0% 28% 72%
7 1,440,071 0% 15% 85%
8 1,440,000 0% 15% 85%
9 1,439,910 0% 18% 82%10 1,439,880 0% 15% 85%
11 1,218,810 0% 2% 98%
12 1,224,000 0% 0% 100%
13 1,224,000 0% 0% 100%
14 415,110 0% 0% 100%
3.2.1.2 West Zone U/G Mine Water:
The West Zone underground mine will extend below permafrost. It is anticipated that deep groundwater
inflow will start in Year 6 and go until the cessation of mining (year 14). The inflows have been assumed
to range from 500 to 1400 m3/day peaking in Year 6. In the absence of site-specific data for deep
groundwater quality, published data from 100 measurements of deep Canadian Shield groundwater
provided preliminary indications of the deep groundwater quality as presented Volume 5, Section 2. The
predicted water quality of the deep groundwater is presented in Appendix B, Table B-3. Given the
potential issues due to elevated levels of metals, specifically cadmium, the mine water from the West
Zone underground mine will be routed to the mill pre-treated using ferric sulfate to reduce the levels of
cadmium to 0.01 mg/L (Volume 8, Section 2.4, Appendix A). It will then be combined with the high pH
mill tailings to further enhance metals removal effectively reducing the concentrations of aluminum,
copper, iron, lead, nickel and zinc to the levels provided in Volume 8, Section 2.4, Appendix A and
summarized in Table 3.2-4. These concentrations were used as a maximum, and when the calculated
concentration of the combined stream is lower, the lower value was used. The estimated water quality of
the combined tailings/underground mine water stream is presented in Appendix B, Table B-4.
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Table 3.2-3 Predicted Inflows from the West Zone Underground Mine
Year Best Case (m3/day)1 - 5 No Flow
6 1,358
7 664
8 670
9 588
10 546
11 527
12 510
13 501
14 484
Table 3.2-4 Estimated Concentrations of Parameters Controlled by pH in the Combined Effluent
Parameter Estimated
Concentrations (mg/L)
pH 10.5
Aluminum 0.30
Cadmium 0.01
Copper 0.02
Iron 0.20Lead 0.02
Nickel 0.02
Zinc 0.29
3.2.1.3 Sewage
Sewage will be treated in a pre-packaged Membrane Batch Reactor (MBR) or Sequence Batch Reactor
(SBR) treatment plant. Discharge from the sewage treatment plant will meet the Guideline for
Discharge of Domestic Wastewater in Nunavut. Sewage discharge will occur continuously throughout
mine life until the end of Year 14. The anticipated sewage effluent discharge rate is 80 m3/day or 2435
m3/month and the predicted water quality is presented in Appendix B, Table B-5.
3.2.1.4 Combined L20 Effluent
Site runoff and drainage from the mill and camp area will be diverted towards and collected in lake L20
including drainage from the mill, camp, day fuel storage, concentrate storage, maintenance shop, and
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building sumps. Natural drainage from the area immediately east of the mill / camp area will also be
collected in L20. For modeling purposes, it is assumed that L20 is flow through and provides no storage
of site water. Water from L20 will be pumped into the mill to be combined with the mill effluent prior to
discharge to High Lake. Details of the key model inputs and assumptions are provided below for each
component.
Runoff from Buildings and Roads in Mill / Camp Area (M13 and M14):
Drainage Area: 49,500 m2(22,904 m2roads and 26,596 m2buildings)
Runoff Coefficient: 0.85 for Years 1 16 and 0.75 for Years 17 on.
Timing: Year 1 to post-closure during the open water season with the same
runoff distribution as natural conditions.
Water Quality: NAG Construction Material water quality presented in Appendix B,
Table B-6 .Overall Assumptions: Entire area highlighted as M13 and M14 on Figure 3.1-1 is assumed to
have the same runoff coefficient, including buildings, and same
drainage water quality.
Natural Residual L20 Drainage (M15):
Drainage Area: 170,250 m2
Runoff Coefficient: 0.6
Timing: Year 1 to post-closure during the open water season.
Water Quality: Existing drainage area water quality as represented by the 75th
percentile of the 2004/2005 data set for L20 to L23 presented in
Appendix B, Table B-7.
Overall Assumptions: Entire area highlighted as M15 on Figure 3.1-1 is assumed to have the
same runoff coefficient and same drainage water quality.
Building Sumps:
Any water in the building sumps will also be collected and discharged with the mill effluent. Presently
the flow associated with this component has been set to 0.
3.2.2 Residual Natural Drainage
Runoff from the Upper High Lake Drainage (L21 L24), local L17 drainage, Upper L17 and L19
drainage and drainage from the un-impacted immediate High Lake catchment will all be routed to High
Lake. For modeling purposes the residual High Lake drainage basin has been divided into 2 separate
zones:
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High Lake Natural Low which drains areas of the basin with lower metal levels consistent with
other drainages in the area, and
High Lake Natural Elevated which drains the area between the AB Pit and the AB Waste Rock
Dump which exhibits elevated metal levels similar to those found to occur naturally in Seep 2
which drains the mineralize area that will not be removed through the development of the AB Pit.
Details of the key model inputs and assumptions are provided below for each component.
High Lake Natural Low (M1):
Drainage Area: 453,827 m2
Runoff Coefficient: 0.6
Timing: Year 1 to post-closure during the open water season.
Water Quality: Water quality based on drainage quality for areas not influenced bydrainage from exposed mineralized areas, as represented by the 75th
percentile of 2004/2005 L15 water quality data (Volume 9, Section
4.3) and presented in Appendix B, Table B-8.
Overall Assumptions: Entire area highlighted as M1 on Figure 3.1-1 is assumed to have the
same runoff coefficient and same drainage water quality.
High Lake Natural Elevated (M2):
Drainage Area: 49,456 m2
Runoff Coefficient: 0.6Timing: Year 1 to post closure (TBD) during the open water season.
Water Quality: Water quality based on drainage quality for areas influenced by
drainage from exposed mineralize areas that will remain after pit
development, as represented by the 75thpercentile of 2004/2005 Seep
2 water quality data (Volume 9, Section 4.2) and presented in
Appendix B, Table B-8.
Overall Assumptions: Entire area highlighted as M2 on Figure 3.1-1 is assumed to have the
same runoff coefficient and same drainage water quality.
L17 Local Drainage (M3):
Drainage Area: 32,964 m2
Runoff Coefficient: 0.6
Timing: Year 1 to post-closure during the open water season.
Water Quality: Existing drainage area water quality, as represented by the 75th
percentile of the 2004/2005 data set for the outflow of L17 (S35)
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Timing: Year 1 to post-closure during the open water season.
Water Quality: High Lake Ore Stockpile drainage water quality for Years 1 to 14 is
presented in Appendix B, Table B-9, derived by Lorax as part of thegeochemical assessment program (Volume 9, Section 1.4). For Year
15 and on the drainage quality is represented by the NAG Construction
Material drainage from the outer 3 m (Appendix B, Table B-6).
Overall Assumptions: Entire area highlighted as M6 on Figure 3.1-1 is assumed to have the
same runoff coefficient and water quality. Size of pile is assumed to
remain constant over life the ore stockpile.
Backfill Stockpile (M7):
Drainage Area: 61,955 m2
Runoff Coefficient: Year 1 0.6
Years 2 to 4 - 0.24 (based on 30% of the water infiltrating into the
stockpile (80% of the mean annual runoff or 80% of 0.6) being
released as the pile is not frozen).
Years 5 14 0.5 (core of pile is frozen and drainage is from outer 3
m shell).
Year 15 to post-closure 0.75.
Timing: Drainage from Backfill Stockpile will only occur during the open
water season.
Water Quality: For Year 1 the water quality is the same as the Upper High Lake
drainage (M5). For Years 2 to 14, the Backfill Stockpile drainage
water quality is presented in Appendix B, Table B-10, derived by
Lorax as part of the geochemical assessment program (Volume 9,
Section 1.4). For Year 15 on, the drainage quality is represented by D-
NAG Permanent, presented in Appendix B, Table B-11, derived by
Lorax as part of the geochemical assessment program (Volume 9,
Section 2.4) from the outer 3 m.
Overall Assumptions: Entire area highlighted as M7 on Figure 3.1-1 is assumed to have the
same runoff coefficient. The predicted drainage water quality will
vary and is based on:
Backfill stockpile is built from Years 2 to 4. For this period itis assumed that the dump is not frozen and drainage is from
of the pile tonnage;
From Years 5 to 14, the core of the pile is assumed to be
frozen and drainage is from the outer 3 m shell.
Year 15 and on drainage quality assumed to be the same as D-
NAG Permanent.
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3.2.4 Mine Water Inputs
Drainage from the AB and D Waste Rock Storage areas will be routed directed to High Lake. For
modeling purposes the D-Pit Waste Rock Storage has been divided into 3 separate zones: D Waste Rock
Pile - Temporary which will contain PAG material to ultimately be placed underground, D Waste Rock
Pile Permanent which will contain NAG material, and D Waste Rock Pile Temporary/Permanent which
will consist of PAG material placed on top of NAG material. Details of the key model inputs and
assumptions are provided below for each component.
AB Waste Rock Pile (M8):
Drainage Area: 202,709 m2Runoff Coefficient: Years 1 to 3 no drainage as it is assumed to be trapped in the pile
behind the toe dyke.
Year 4 on 0.75 from the outer 3 m and the core is assumed to be
frozen.
Timing: Year 1 to Year 3 dump construction assume no drainage. All water is
held in dump behind dyke and frozen in situ.
Year 4 and on drainage is from the outer 3 m NAG layer only during
the open water season.
Water Quality: The AB Waste Rock Dump drainage water quality is presented is
presented in Appendix B, Table B-12, derived by Lorax as part of thegeochemical assessment program (Volume 9, Section 1.4).
Overall Assumptions: Entire area highlighted as M8 on Figure 3.1-1 is assumed to have no
runoff from Year 1 to Year 3. From Year 4 on, the entire area is
assumed to have the same runoff coefficient. The predicted drainage
water quality from Year 4 on is based on the NAG drainage chemistry
from the outer 3 m shell.
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D Waste Rock Piles Temporary (M9):
Drainage Area: 67,094 m2
Runoff Coefficient: Year 1 0.6
Years 2 to 4 - 0.24 (based on 30% of the water infiltrating into the
stockpile (80% of the mean annual runoff or 80% of 0.6) being
released as the pile is not frozen).
Years 5 14 0.5 (core of pile is frozen and drainage is from outer 3
m shell).
Year 15 to post-closure 0.75.
Timing: Drainage from D Waste Rock Pile - Temporary will only occur during
the open water season.
Water Quality: For Year 1 the water quality is the same as the Upper L17/L9 drainage
(M4). Years 2 to 14, the D Waste Rock Pile - Temporary drainagewater quality is presented in Appendix B, Table B-13, derived by
Lorax as part of the geochemical assessment program (Volume 9,
Section 1.4). For Year 15 on, the drainage quality is represented by the
D-NAG Permanent presented in Appendix B, Table B-11.
Overall Assumptions: Entire area highlighted as M9 on Figure 3.1-1 is assumed to have the
same runoff coefficient. The predicted drainage water quality will
vary and is based on:
The pile is built from Years 2 to 4. For this period it is
assumed that the dump is not frozen and PAG drainage is from of the pile tonnage;
From Years 5 to 14, the core of the pile is assumed to be
frozen and drainage is from the outer 3 m shell.
Year 15 and on the core of the pile is frozen and drainage is
assumed to be from the outer 3 m NAG material.
D Waste Rock Pile Permanent/Temporary (M10):
Drainage Area: 20,656 m2
Runoff Coefficient: Year 1 0.6Years 2 to 7 - 0.24 (based on 30% of the water infiltrating into the
stockpile (80% of the mean annual runoff or 80% of 0.6) being
released as the pile is not frozen).
Years 8 14 0.5 (core of pile is frozen and drainage is from outer 3
m shell).
Year 15 to post-closure 0.75.
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Timing: Drainage from D Waste Rock Pile Temporary/Permanent will only
occur during the open water season.
Water Quality: For Year 1 the water quality is the same as the Upper L17/L9 drainage(M4). Years 2 to 4, the D Waste Rock Pile Temporary/Permanent
drainage water quality is presented in Appendix B, Table B-14 (D-
NAG Lower Permanent), derived by Lorax as part of the geochemical
assessment program (Volume 9, Section 1.4). For Year 5 to 14, the
drainage is from PAG material with the drainage chemistry the same
as that presented in Appendix B, Table B-13. For Year 15 on, the
drainage quality is represented by the D-NAG Permanent presented in
Appendix B, Table B-11.
Overall Assumptions: Entire area highlighted as M10 on Figure 3.1-1 is assumed to have the
same runoff coefficient. The predicted drainage water quality will
vary and is based on:
From Years 2 to 4 the drainage is from NAG material. For this
period it is assumed that the dump is not frozen and drainage is
from of the pile tonnage;
From Years 5 to 7, PAG material has been placed on top. The
pile is not frozen and the drainage quality is assumed to be tat
of tonnage for the PAG material tonnage.
From Years 8 to 14, the core of the pile is assumed to be
frozen and the drainage is from the outer 3 m of PAG material.
Year 15 and on the core is assumed to be frozen and drainage
is from the outer 3 m of remaining NAG material.
D Waste Rock Pile Permanent (M11):
Drainage Area: 42,147 m2
Runoff Coefficient: Year 1 0.6
Years 2 to 4 - 0.24 (based on 30% of the water infiltrating into the
stockpile (80% of the mean annual runoff or 80% of 0.6) being
released as the pile is not frozen).
Years 5 14 0.5 (core of pile is frozen and drainage is from outer 3
m shell).Year 15 to post-closure 0.75.
Timing: Drainage will only occur during the open water season.
Water Quality: For Year 1 the water quality is the same as the Upper L17/L9 drainage
(M4). Year 2 on, the D Waste Rock Pile Temporary/Permanent
drainage water quality is presented in Appendix B, Table B-11 (D-
NAG Permanent), derived by Lorax as part of the geochemical
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assessment program (Volume 9, Section 1.4).
Overall Assumptions: Entire area highlighted as M11 on Figure 3.1-1 is assumed to have the
same runoff coefficient. The predicted drainage water quality willvary and is based on:
From Years 2 to 4 the dump is not frozen and drainage is from
of the pile tonnage;
From Year 5 on, the core is assumed to be frozen and drainage
is from the outer 3 m of remaining NAG material.
3.2.5 Open Pits (M18 to M21)
During operations, water from AB and D Pits will be pumped directly to High Lake. For the AB Pit, this
will occur until year 6 after, following which tailings will be deposited from year 7 to year 10 (end of 8th
month), until the pit is filled with tailings solids. During this time all tailings supernatant will be
constantly removed from AB Pit (minus that bound up in the solids void spaces) and deposited in High
Lake. It is assumed the pit will then be drained of all water in year 11 and capped in year 12. From year
1 to year 6, the water quality in AB Pit is based on the operating values provided by Lorax (Volume 9,
Section 1.4) and presented in Appendix B, Table B-15. During deposition of tailings and for Year 11, the
operating water quality is still used but the loading is prorated based on the surface area of the water in
the pit. At closure, the closure chemistry will be applied to the remaining surface areas above the spill
elevation (see below for areas). This is essentially drainage from the remaining high wall. For this area
the runoff coefficient is 0.8 in June and 0.6 for the remainder of the year. Drainage from the remaining
pit surface area will be that of D-NAG from the outer 3 meters with a runoff coefficient of 0.75 as
outlined in the following.
Remaining high wall = 30,273 m2 Waste Rock-Pit Input: AB-Pit closure water quality 0.8
June/0.6 remainder;
Capped area = 63, 785 m2 Waste Rock-Pit Input: D-NAG-Perm. 3 m chemistry runoff 0.75.
For D-Pit, waste rock mining starts in year 2. Year 1 drainage chemistry will be that of the existing
natural drainage. Open pit ore mining will take place in Year 3 and Year 4 followed by underground
mining until year 11. From Year 2 to year 11, water will be pumped to High Lake and chemistry will be
determined using the operating water quality provided by Lorax (Volume 9, Section 1.4) and presentedin Appendix B, Table B-16. Tailing will be deposited in D-Pit from half way through Year 12 to Year 14.
All supernatant will remain in the pit. During deposition of tailings, the operating water quality is still
used for the natural drainage of the pit and the exposed pit walls but the loading is prorated based on the
surface area of the water in the pit.
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3.2.6 Nutrient Loading from Explosives
Along with the inputs to High Lake outlined in the previous sections, water that is in contact with mine
rock, and ultimately drains to High Lake, will initially contain nitrogen compounds from explosive
residues: ammonia, nitrate and nitrite. Volume 9, Section 1.4 provides an estimate of the annual loads of
explosive residues to the High Lake tailings impoundment based on the Projected explosives use. Full
details of the calculation of estimated annual nitrogen losses is presented in Volume 9, Section 1.4 and
summarized in Appendix B, Table B-18.
3.2.7 High Lake Discharges
There are three potential discharges from High Lake that have been included in the model: discharge
during the open water season to the Kennarctic River, water reclaim for milling purposes, and potentialgroundwater losses through the lake talik. Details of the key model inputs and assumptions are provided
below for each component.
High Lake Discharge Water:
Water Quantity: Variable tied to the flow in receiving environment during open water
season only. Spill from High Lake is determined based on the lake
elevation using a rating curve. During the initial months of operation
the elevation of High Lake must rise to meet the new constructed
outlet elevation.Timing: Year 1 to post-closure during the open water season June to
September during operations and June to October during closure and
post-closure.
Water Quality: Water quality of discharge water will be that predicted by the model at
time of discharge
Reclaim Water
Water Quantity: Variable over mine life prorated based on a reclaim volume of 3120 m3
for a total annual tonnage of 1,440,000. Annual reclaim water volume
presented in Table 3.2-5.
Timing: Year 1 to Year 14
Water Quality: Water quality of reclaim water will be that predicted by the model at
time of withdrawal.
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Table 3.2-5 Annual Volume Reclaim to the Mill
Year Annual Volume
Reclaim Water (m3)
1 866436.2
2 1124568.0
3 1124568.0
4 1124568.0
5 1124508.2
6 1124571.1
7 1124623.6
8 1124568.0
9 1124497.7
10 1124474.3
11 951829.7
12 955882.8
13 955882.8
14 324180.2
Groundwater Losses:
As discussed in Volume 5 Section 2 Hydrogeology, during operations and through post-closure phases,
there may be deep groundwater losses from High Lake through the underlying flow through talik. While
the surface water discharge from High Lake is limited to the open water season, potential migration
through groundwater to the Kennarctic River occurs year round. For modeling purposes it was assumed
that the rate of High Lake losses through this groundwater pathway would be from 120 m 3/day to 130
m3/day (Table 3.2-6).
Water Quantity: Variable over mine life as presented below
Timing: Year 1 to post-closure
Water Quality: Water quality of reclaim water will be that predicted by the model at
time of discharge
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Table 3.2-6 Summary of Estimated Groundwater Leakage Rates through the High Lake Talik
Year High Lake GroundwaterLosses (m3/day)
0 120
1 125
2 128
3 131
4 128
5 126
6 125
7 124
8 1249 123
10 122
11 122
12 121
13 120
14 and on 120
4 Model Output
The model output is presented in Appendix C through G for each hydrological scenario. Each appendix
contains model output in tabular and graphical format.
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Appendices
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Appendix A
Results from Bench Scale Flotation Tests
Testing of High Lake Ores (G&T Metallurgical Services Ltd.
Supernatant Toxicity and Water Quality Analysis Results
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TESTING OF HIGH LAKE ORES
WOLFDEN RESOURCES LTD.
KM1741
G&T METALLURGICAL SERVICES LTD.
2957 Bowers Place, Kamloops, B.C. Canada V1S 1W5
E-mail: [email protected] , Website: www.gtmet.com
ISO 9001:2000
Certificate No. FS 63170
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G T METALLURGICAL SERVICES LTD2957 Bowers Place, Kamloops, B.C., Canada V1S 1W5
Fax (250) 828-6159 Tel. (250) 828-6157e-mail: [email protected]
ISO9001:2000FS 63170
December 12, 2005
Mr. Nick Contini, P. Eng.Senior Mineral Processing EngineerWardrop EngineeringSuite 102-957 Cambrian Heights DriveSudbury, OntarioP3C 5M6
Dear Mr. Contini,
Re: Testing of High Lake Ores KM1741
We have now completed the testing activities authorized on mineralized samples from
the High Lake deposit. The objectives of this program, as described in your
correspondence of November 3 and 21, is summarized as follows:
- Produce approximately 5 litres of process water and tailing from a single testperformed on each A/B Zone, Met Composites and HL Met Composite samples.
- Perform a single flotation test on D Zone, Low Zinc ore using conditionsdescribed in your correspondence.
- Perform a single test on an equal weighted composite of Hanging Wall 2, Bottom,Middle and Top composites.
- Perform a series of magnetic separation tests on selected samples of copper andzinc concentrates produced in a previous program. Analyze the magneticproducts for copper, zinc, nickel and iron.
- Perform a single Knelson concentration test on samples of D Zone Low Zinc, A/BZone Stringer, A/B Zone MS-SM, West Zone Top Composite, and A/B ZoneMassive Sulphide.
- Analyze selected concentrate samples for gallium and germanium.
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Unfortunately, due to insufficient sample mass or test product mass, some of the desired
objectives were not achieved. Specifically, assay determinations were not performed on
the magnetic and non-magnetic test products.
As discussed, we have not prepared a technical report to summarize the results achieved
in this program. However, all of the results generated by this program are presented in
the following appendices of data:
Appendix I Sample Origin and Shipping Activities
Appendix II Gravity Concentration and Flotation Test Results
Appendix III Settling and Magnetic Separation Test Results and
Gallium/Germanium Assay Data
If you have any questions regarding the attached data sets or our comments, please do not
hesitate to contact us.
Yours truly,
Tom Shouldice, P. Eng.General Manager - Operations
Report Distribution:Nick Contini, Wardrop Engineering, Sudbury, ON 1 CopyG & T Metallurgical Services, Kamloops, BC 2 Copies
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APPENDIX I KM1741
SAMPLE ORIGIN AND SHIPPING ACTIVITIES
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1
1.0 Sample Origin
Samples previously prepared and produced in KM1569, KM1363 and KM1428
were utilized in this program. As instructed, selected samples were produced inthis program and shipped to various locations. Table I-1 details this shipping
activity.
TABLE I-1SHIPPING DETAILS
Test ProductMass
gramsShipped To
4 Final Tails Slurry 2000 Canadian Environmental
5 Final Tails Slurry 4000 Canadian Environmental
6 Final Tails Slurry 4000 Canadian Environmental
4 Final Tails Slurry 250 Lorax Environmental
5 Final Tails Slurry 250 Lorax Environmental
6 Final Tails Slurry 250 Lorax Environmental
4 Final Tails Water 5000 Vizon Scitec
5 Final Tails Water 5000 Vizon Scitec
6 Final Tails Water 5000 Vizon Scitec
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APPENDIX II KM1741
GRAVITY CONCENTRATIONAND FLOTATION TEST RESULTS
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INDEX
TEST PAGE
1 Knelson Concentration Test D Zone Low Zinc Composite 1
2 Knelson Concentration Test West Zone Top Composite 3
3 Knelson Concentration Test HL Met Composite 5
4 Batch Cleaner Test HL Met Composite 7
5 Batch Cleaner Test D Zone Low Zinc Composite 9
6 Batch Cleaner Test Hanging Wall 2/Bottom/Middle/Top Composite 11
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1
PROJECT NO: KM1741-01
PURPOSE: Knelson Concentration on D Zone Low Zinc Composite (KM1363) Primary Grind.
PROCEDURE: Perform a standard Knelson concentration test on the primary grind. Pan the Knelson
concentrate to about 10 g. The Knelson tail and Pan tail are assayed separately.
FEED: KM1363 D Zone Low Zinc Composite ground to a nominal 91m K80.
FLOWSHEET NO: 4
Stage Inlet Time
Pressure Start Finish Sample Weight Minutes
Grind 1000 g 500 ml 6
KN Separation 1 66 psi 1.6 2.2 2
Cold Water
Outlet Pressures
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2
KM1741-01 D Zone Low Zinc Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
grams % Cu Zn W Ag Au Cu Zn W Ag Au
Knelson Pan Concentrate 1.3 0.1 1.43 0.29
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3
PROJECT NO: KM1741-02
PURPOSE: Knelson Concentrate of West Zone Top Composite (KM1486) Primary Grind.
PROCEDURE: Perform a standard Knelson concentration test on the primary grind. Pan the
Knelson concentrate to about 10 g. The Knelson tail and Knelson pan tail are
assayed separately.
FEED: KM1486 West Zone Top Composite ground to 97m K80.
FLOWSHEET NO:
Stage Inlet Time
Pressure Start Finish Sample Weight Minutes
Grind 1000 g 500 ml 5
KN Separation 1 66 psi 1.6 2.2 2
Cold Water
Outlet Pressures
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4
KM1741-02 West Zone Top Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
grams % Cu Zn W Ag Au Cu Zn W Ag Au
Knelson Pan Concentrate 21.5 2.2 2.91 1.69 0.02 118 45.1 1.6 1.4 0.9 2.4 48.5
Knelson Pan Tail 84.9 8.5 3.63 2.32 0.04 102 2.22 7.9 7.8 7.0 8.2 9.4
Knelson Tail 892.8 89.4 3 .96 2.58 0.05 106 0.94 90.5 90.8 92.1 89.4 42.0
Feed 999.2 100 3.91 2.54 0.05 106 2.00 100 100 100 100 100
KM1741-02 West Zone Top CompositeCumulative Metallurgical Balance
Cumulative Cum. Weight Assay Distribution
Product grams % Cu Zn W Ag Au Cu Zn W Ag Au
Product 1 21.5 2.2 2.91 1.69 0.02 118 45.1 1.6 1.4 0.9 2.4 48.5
Product 1 to 2 106.4 10.6 3 .48 2.19 0.04 105 10.9 9 .5 9.2 7.9 10.6 58.0
Product 3 892.8 89.4 3.96 2.58 0.05 106 0.94 90.5 90.8 92.1 89.4 42.0
Feed 999.2 100 3.91 2.54 0.05 106 2.00 100 100 100 100 100
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5
PROJECT NO: KM1741-03
PURPOSE: Knelson Concentration on HL Met Composite (KM1628/1569) Primary Grind.
PROCEDURE: Perform a standard Knelson concentration test on the primary grind. Pan the
Knelson concentrate to about 10 g. The Knelson tail and Knelson pan tail are
assayed separately.
FEED: KM1569 HL Met Composite ground to 93m K80.
FLOWSHEET NO:
Stage Inlet Time
Pressure Start Finish Sample Weight Minutes
Grind 1000 g 500 ml 7
KN Separation 1 66 psi 1.6 2.2 2
Cold Water
Outlet Pressures
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6
KM1741-03 HL Met Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
g % Cu Zn W Ag Au Cu Zn W Ag Au
Knelson Pan Concentrate 9.5 0.9 4.76 0 .13
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7
PROJECT NO: KM1741-04
PURPOSE: To Produce Approximately 5 Litres of Final Tailings Supernatant/Cleaner Scavenger
Tailing, Rougher Tailings and Tailing Solids.
PROCEDURE: Perform a one product batch cleaner test with regrind and three stages of dilutioncleaning at pH 11.0.
FEED: 2 x 1 kg of HL Met Composite ore ground to a nominal 93m K80.
FLOWSHEET: 2
Stage Reagents Added g/tonne Time (minutes) pH
Lime PE26 PAX MIBC Grind Cond. Float
Primary Grind 750 7 9.5
COPPER CIRCUIT:
Rougher 1 150 20 48 1 2 10.0
Rougher 2 10 30 1 2 10.0
Rougher 3 10 30 1 2 10.0
Regrind 400 7 10.5
Cleaner 1 5 24 1 10 11.0
Cleaner 2 16 1 8 11.0
Cleaner 3 16 1 6 11.0
Cleaner Scavenger 0 5 0 1 4 10.5
Flotation Data Rougher Cleaner
Flotation Machine: D2B D1B Mill:
Cell Size in liters: 8.8 2.2 Charge/Material:
Air Aspiration: Water:
Impeller Speed in rpm: 1200 1200
M3-Mild M3-Mild
Supercharged
20 kg-Mild 20 kg-Mild
500 ml estimated
Note: Added 3.0 ml of A130 Flocculant to Final Tailings Pulp.
Grinding Data Primary Grind Regrind
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8
KM1741-04 HL Met Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
grams % Cu Zn Fe Cu Zn Fe
Cu Concentrate 212.5 10.5 31.9 0.2 30.2 70.3 12.6
Cu 3rd Cleaner Tail 56.6 2.8 25.0 0.4 14.7 6.4
Cu 2nd Cleaner Tail 117.3 5.8 7.40 0.7 9.0 24.2
Cu Cleaner Scav Con 52.6 2.6 1.62 0.7 0.9 11.0
Cu Cleaner Scav Tail 340.9 16.9 0.31 0.2 1.1 21.2
Cu Rougher Tail 1240.7 61.4 0.31 0.1 4.0 24.6
Feed 2020.7 100 4.77 0.2 100 100
KM1741-04 HL Met Composite
Cumulative Metallurgical Balance
Cumulative Cum. Weight Assay Distribution
Product grams % Cu Zn Fe Cu Zn Fe
Product 1 212.5 10.5 31.9 0.21 30.2 70.3 12.6
Product 1 to 2 269.1 13.3 30.4 0.25 85.0 19.0
Product 1 to 3 386.4 19.1 23.5 0.40 94.0 43.2
Product 1 to 4 439.0 21.7 20.8 0.44 94.9 54.2
Product 1 to 5 779.9 38.6 11.9 0.34 96.0 75.4
Product 6 1240.7 61.40 0.31 0.07 3.99 24.56
Feed 2020.7 100 4.8 0.18 100 100
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9
PROJECT NO: KM1741-05
PURPOSE: To Produce Approximately 5 Litres of Final Tailings Supernatant/Cleaner Scavenger
Tailing, Rougher Tailings and Tailing Solids.
PROCEDURE: Perform a one product batch cleaner test with regrind and three stages of dilution
cleaning at pH 11.5.
FEED: 4 x 1 kg of D Zone Low Zinc Composite ore ground to a nominal 91 m K80.
FLOWSHEET: 2
Stage Reagents Added g/tonne Time (minutes) pH
Lime ZnSO4 PE26 PAX MIBC Grind Cond. Float
Primary Grind 350 100 6 9.4
COPPER CIRCUIT:
Rougher 1 150 20 45 1 2 10.1
Rougher 2 10 30 1 2 10.0
Rougher 3 150 10 0 1 2 10.0
Regrind 650 7
Cleaner 1 0 40 5 16 1 10 11.8
Cleaner 2 0 10 16 1 8 11.4
Cleaner 3 2.5 16 1 6 11.0
Cleaner Scavenger 0 10 5 0 1 2 11.6
Flotation Data Rougher Cleaner
Flotation Machine: D2B D1B Mill:
Cell Size in liters: 8.8 2.2 Charge/Material:
Air Aspiration: Water:
Impeller Speed in rpm: 1200 1200
Note: Added 3.0 ml of A130 Flocculant into Copper Rougher Tailings.
Grinding Data Primary Grind Regrind
M3-Mild M3-Mild
Supercharged
20 kg-Mild 20 kg-Mild
500 ml estimated
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KM1741-05 D Zone Low Zinc Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
grams % Cu Zn Fe Cu Zn Fe
Cu Concentrate 158.9 4.0 24.9 2.63 25.1 90.3 40.8
Cu 3rd Cleaner Tail 45.1 1.1 1.38 0.53 1.42 2.3
Cu 2nd Cleaner Tail 142.1 3.6 0.38 0.26 1.23 3.6
Cu Cleaner Scav Con 19.0 0.5 0.62 2.57 0.27 4.8
Cu Cleaner Scav Tail 430.3 10.8 0.11 0.12 1.08 5.0
Cu Rougher Tail 3186.0 80.0 0.08 0.14 5.67 43.5
Feed 3981.4 100 1.10 0.26 100 100
KM1741-05 D Zone Low Zinc Composite
Cumulative Metallurgical Balance
Cumulative Cum. Weight Assay Distribution
Product grams % Cu Zn Fe Cu Zn Fe
Product 1 158.9 4.0 24.9 2.63 25.1 90.3 40.8
Product 1 to 2 204.0 5.1 19.7 2.17 91.7 43.1
Product 1 to 3 346.1 8.7 11.8 1.38 93.0 46.7
Product 1 to 4 365.1 9.2 11.2 1.45 93.2 51.5
Product 1 to 5 795.4 20.0 5.2 0.73 94.3 56.5
Product 6 3186.0 80.0 0.08 0.14 5.67 43.51
Feed 3981.4 100 1.10 0.26 100 100
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PROJECT NO: KM1741-06
PURPOSE: To Produce Approximately 5 Litres of Final Tailings Supernatant/Cleaner Scavenger
Tailing, Rougher Tailings and Tailing Solids.
PROCEDURE: Perform a two product batch cleaner test with regrind and three stages of dilution cleaning at
pH 11.0 on the copper circuit and pH 11.5 in the zinc circuit. The copper cleaner scavengertail is put into the head of the zinc circuit.
FEED: 1 kg each of Hanging Wall 2, Bottom, Middle and Top Composite (KM1486) ore ground to a
nominal 97m K80.
FLOWSHEET: 2
Stage Reagents Added g/tonne Time (minutes) pH
Lime ZnSO4 NaCN PE26 PAX MIBC Grind Cond. Float
Primary Grind 1000 60 20 5 9.9
COPPER CIRCUIT:Rougher 1 260 20 30 1 1 10.0
Rougher 2 10 15 1 2 10.0
Rougher 3 30 0 1 2 10.0
Regrind 400 15 5 12 11.1
Cleaner 1 0 40 15 16 1 12 11.1
Cleaner 2 4 16 1 8 11.0
Cleaner 3 0 8 1 6 11.0
Cleaner Scavenger 15 5 5 0 1 2 10.4
ZINC CIRCUIT: CuSO4 SIPX
Condition 1 3 11.5
Condition 2 500 2 11.5
Rougher 1 10 15 1 2 11.5
Rougher 2 0 0 1 2 11.5
Regrind 700 30 5 11.8
MIBC DF250
Cleaner 1 0 5 16 0 1 4 11.8
Cleaner 2 0 16 20 1 3 11.5
Cleaner 3 0 0 20 1 3 11.5
Flotation Data Rougher Cleaner
Flotation Machine: D2B D1B Mill:
Cell Size in liters: 8.8 2.2 Charge/Material:
Air Aspiration: Water:
Impeller Speed in rpm: 1200 1200
M3-Mild M3-Mild
Supercharged
20 kg-Mild 20 kg-Mild
500 ml estimated
Grinding Data Primary Grind Regrind
Note: Added 3.0 ml of A130 Flocculant into Zinc Rougher Tail.
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KM1741-06 Hanging Wall/Bottom/Middle/Top Composite
Overall Metallurgical Balance
Product Weight Assay Distribution
grams % Cu Zn Fe Cu Zn Fe
Cu Concentrate 573.3 14.4 18.2 7.60 27.1 91.3 28.1
Cu 3rd Cleaner Tail 131.0 3.3 0.87 1.84 1.00 1.6
Cu 2nd Cleaner Tail 74.4 1.9 0.57 0.93 0.37 0.4
Cu Cleaner Scav Con 46.8 1.2 0.84 1.88 0.34 0.6
Zn Concentrate 207.0 5.2 0.61 42.60 1.10 56.9
Zn 3rd Cleaner Tail 31.9 0.8 0.65 3.29 0.18 0.7
Zn 2nd Cleaner Tail 189.8 4.8 0.28 1.07 0.46 1.3
Zn 1st Cleaner Tail 1045.1 26.2 0.12 0.39 1.10 2.6Zn Rougher Tail 1691.4 42.4 0.28 0.71 4.14 7.8
Feed 3990.7 100 2.86 3.88 100 100
KM1741-06 Hanging Wall/Bottom/Middle/Top Composite
Cumulative Metallurgical Balance
Cumulative Cum. Weight Assay Distribution
Product grams % Cu Zn Fe Cu Zn Fe
Product 1 573.3 14.4 18.2 7.60 27.1 91.3 28.1
Product 1 to 2 704.3 17.6 15.0 6.53 92.3 29.7
Product 1 to 3 778.7 19.5 13.6 5.99 92.7 30.1
Product 1 to 4 825.5 20.7 12.9 5.76 93.0 30.7
Product 5 207.0 5.2 0.6 42.60 1.1 56.9
Product 5 to 6 238.9 6.0 0.6 37.35 1.3 57.6
Product 5 to 7 428.7 10.7 0.5 21.29 1.8 58.9
Product 5 to 8 1473.8 36.9 0.2 6.47 2.8 61.5
Product 9 1691.4 42.4 0.28 0.71 4.14 7.75
Feed 3990.7 100 2.86 3.88 100 100
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APPENDIX III KM1741
SETTLING AND MAGNETIC SEPARATION TEST RESULTS
AND GALLIUM/GERMANIUM ASSAY DATA
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1
TABLE III-1 SETTLING TEST
HL Met Composite
Final Tailings
TEST CONDITIONS
Elapsed Interface Interface Solids S.G. 2.95
Time (min) Height (ml) Height (mm) Solids Weight (g) 150
Solids Volume (ml) 50.8
0 1000 357 pH ( as tested ) 9.4
0.3 750 267 pH modifier (g/T) -
0.5 640 228 Flocculent Type Superfloc A-130
0.6 550 196 Flocculent ( g/T) 3
1 400 143 Temperature (C) 21
1.5 270 96 Slurry Volume (ml) 1000
2 230 82 Slurry S.G. 1.10
3 200 71 Final Slurry Volume 140
4 185 66 Initial Percent Solids 13.7
5 170 61 Final Percent Solids 62.7
7 160 57
10 150 53
15 145 52
25 145 52
30 145 52
120 140 50
1440 140 50
SETTLING DATA
0
100
200
300
400
0 20 40 60 80 100
Time - minutes
Interface-millimetres
SETTLING RATE CURVE
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2
TABLE III-2 SETTLING TEST
D Zone Low Zinc Composite
Final Tailings
TEST CONDITIONS
Elapsed Interface Interface Solids S.G. 2.75
Time (min) Height (ml) Height (mm) Solids Weight (g) 345
Solids Volume (ml) 125.5
0 1000 357 pH ( as tested ) 10.1
0.3 990 353 pH modifier (g/T) -
0.5 985 351 Flocculent Type Superfloc A-130
0.6 980 350 Flocculent ( g/T) 3
1 975 348 Temperature (C) 21
1.5 965 344 Slurry Volume (ml) 1000
2 950 339 Slurry S.G. 1.22
3 930 332 Final Slurry Volume 345
4 910 325 Initial Percent Solids 28.3
5 885 316 Final Percent Solids 61.1
7 825 294
10 765 273
12 725 259
15 665 237
18 625 223
22 550 196
28 485 173
30 470 168
32 460 164
35 450 160
46 425 152
60 402 143
75 390 139
90 380 136
120 365 130
150 357 127
180 353 126
1440 345 123
SETTLING DATA
0
100
200
300
400
0 20 40 60 80 100
Time - minutes
Interface-
millimetres
SETTLING RATE CURVE
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TABLE III-3 SETTLING TEST
West Zone Composite
Final Tailings
TEST CONDITIONS
Elapsed Interface Interface Solids S.G. 2.96
Time (min) Height (ml) Height (mm) Solids Weight (g) 271
Solids Volume (ml) 91.6
0 1000 357 pH ( as tested ) 10.1
0.3 860 307 pH modifier (g/T) -
0.5 800 285 Flocculent Type Superfloc A-130
0.6 740 264 Flocculent ( g/T) 3
1 640 228 Temperature (C) 21
1.5 510 182 Slurry Volume (ml) 1000
2 440 157 Slurry S.G. 1.18
2.5 385 137 Final Slurry Volume 213
3 350 125 Initial Percent Solids 23.0
4 305 109 Final Percent Solids 69.1
5 285 102
6 275 98
7 265 95
10 247 88
28 220 78
300 215 77
540 213 76
1440 213 76
SETTLING DATA
0
100
200
300
400
0 20 40 60 80 100Time - minutes
Interface-millimetres
SETTLING RATE CURVE
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TABLE III-4
CONCENTRATE MAGNETIC SEPARATION TESTS
Sample Feed Mass Magnetics Mass
Identification grams grams percent
KM1741-6 Copper Concentrate 10 0.31 3.1
KM1741-6 Zinc Concentrate 10 0.28 2.8
NM1363-12 Copper Concentrate 10 0.27 2.7
NM1363-13 Copper Concentrate 10 0.10 1.0
NM1363-13 Zinc Concentrate 10 0.37 3.7
NM1363-14 Copper Concentrate 10 0.53 5.3
Note a) The magnetic separation was performed using a Davis Tube at 900 Gauss.
TABLE III-5
CONCENTRATE GALLIUM AND GERMANIUM ASSAYS
Sample ME-MS61c ME-MS61c
Identification ppm Ga ppm Ge
1486-64 Zinc Concentrate 12.5
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(VOL_9_SEC1-12_RPT_06NOV14_GLL_High_Lake_WQ_Model_Summary.doc)
Appendix BModel Water Quality Input Data
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StationWater Quality
GuidelinesAB Zone D Zone West Zone
Date CCMEa
Physical Tests
Conductivity (us/cm 241 406 1239Total Suspended Solids 4 54 16Hardness CaCO3 76 91 391Hardness (Total) CaCO4 76 108 468pH 6.5-9.0 8.8 9.5 11.6
Nutrients
Ammonia Nitrogen 1.78-38.6* 0.083 0.064 0.096Nitrate Nitrogen 13 0.122 0.119 0.093Nitrite Nitrogen 0.06 0.011 0.003 6.5, [Ca2+] > 4 mg/L, DOC > 2 mg/Lc) 0.002 mg/L at [CaCO3] = 0 - 120 mg/L; 0.003 mg/L at [CaCO3] =120 - 180 mg/L; 0.004 mg/L at [CaCO3] >180mg/L
d) 0.001 mg/L at [CaCO3] = 0 - 60 mg/L; 0.002 mg/L at [CaCO3] =60 - 120 mg/L; 0.004 mg/L at [CaCO3] =120 -180mg/L; 0.007 mg/L at [CaCO3] > 180mg/L
e) 0.025 mg/L at [CaCO3] = 0 - 60 mg/L; 0.065 mg/L at [CaCO3] =60 - 120 mg/L; 0.110 mg/L at [CaCO3] =120 -180mg/L; 0.150 mg/L at [CaCO3] > 180mg/L
Table B-1: Summary of Supernatant Test Results
General Chemistry Analysis, Total and Dissolved Metals (mg/L)
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Year Year 6 - 7 Year 8 Year 9 Year 10 Year 11 Year 12 Year 13ys ca es s
pH (pH units) 7.00 7.00 7.00 7.00 7.00 7.00 7.00 A a n ty . . . . . . .Hardness 30837.0 30899.3 30899.3 30899.3 30899.3 30899.3 30899.3
or e . . . . . . .Sulphate 181.3 184.2 184.2 184.2 184.2 184.2 184.2
u r en s rgan csTotal Ammonia
trateNitrite
ota osp orus . . . . . . rt o-p osp ate
rgan csota rgan c ar onsso ve rgan c ar on
yan esota yan e
o a e a sA um num . . . . . . .Ant mony . . . . . .Arsen c . . . . . .
ar um . . . . . .ery umsmut
oron . . . . . . .
a m um . . . . . . .a c um . . . . . . .rom um . . . . . . .
o a t . . . . . . .opper . . . . . . .
ron . . . . . . .ea . . . . . . .t um . . . . . . .agnes um . . . . . . .anganese . . . . . . . ercuryo y enum . . . . . .c e . . . . . . .
otass um . . . . . . .e en um . . . . . .
con . . . . . . .ver
o um . . . . . . .tront um . . . . . . .
a um . . . . . .
n . . . . . .tan umran um . . . . . .ana um . . . . . .nc . . . . . . .
A va ues n mg un ess ot erw se notes
Table B-3 - West Zone Underground Mine Water with Wall Rock and PAG Input Parameters
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Parameter SewagePhysical Tests
pH (pH units) 7.21Alkalinity 12.5
Hardness 15.4Chloride 3.00Sulphate 4.3
Nutrients / OrganicsTotal Ammonia 10.0000
Nitrate 1.00Nitrite 30.0000Total Phosphorus 1.0000Ortho-phosphate 1.0000
OrganicsTotal Organic Carbon 40Dissolved Organic Carbon 40.00
CyanidesTotal Cyanide 0.0000
Total MetalsAluminum 0.0074Antimony 0.00010Arsenic 0.00016
Barium 0.00218Beryllium 0.00050Bismuth 0.00050Boron 0.010Cadmium 0.00005Calcium 4.07Chromium 0.00050Cobalt 0.00010Copper 0.00269Iron 0.030Lead 0.00010Lithium 0.00500Magnesium 1.36Manganese 0.00264Mercury 0.00003Molybdenum 0.00005
Nickel 0.00050Potassium 2.0Selenium 0.00100Silicon 0.200Silver 0.00001Sodium 2.0Strontium 0.00708Thallium 0.00010Tin 0.00326Titanium 0.010Uranium 0.00001Vanadium 0.0010
nc .A va ues n mg un ess ot erw se notes
Table B-5 Sewage Input Parameters
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Table B-6 - NAG Construction Material Predicted Water Quality
Parameter
Physical Tests Jun Jul Aug Sep Oct
Water Temperature 2 10 10 5 2
pH 7.9 7.9 8.1 8.3 8.4
Alkalinity 49.7 45.8 79.5 138.6 161.4Hardness 12.4 8.2 16.7 29.1 91.6
Sulphate 12.0 11.0 20.0 35.0 103.0
Nutrients
Total Phosphate 0.2000 0.2000 0.3000 0.5000 1.6000
Total Metals
Aluminum 0.0670 0.0621 0.1056 0.1904 0.1739
Antimony 0.02600 0.02400 0.04100 0.07300 0.22010
Arsenic 0.00220 0.00200 0.00350 0.00590 0.01770
Barium 0.04900 0.04600 0.06630 0.04390 0.01790
Beryllium 0.00000 0.00000 0.00000 0.00050 0.00070
Bismuth 0.00020 0.00020 0.00030 0.00060 0.00180
Boron 0.133 0.123 0.216 0.384 1.153Cadmium 0.00000 0.00000 0.00010 0.00010 0.00040
Calcium 8.7 8 14 24.4 23.1
Chromium 0.00000 0.00000 0.00100 0.00100 0.00300
Cobalt 0.00000 0.00000 0.00000 0.00100 0.00200
Copper 0.00140 0.00140 0.00270 0.00560 0.01670
Iron 0.000 0.000 0.000 0.000 0.000
Lead 0.00000 0.00000 0.00000 0.00080 0.00140
Lithium 0.00300 0.00200 0.00400 0.00700 0.02200
Magnesium 2.3 2.3 2.3 2.3 2.3
Manganese 0.021 0.02 0.034 0.061 0.1831
Molybdenum 0.00100 0.00100 0.00200 0.00300 0.00900
Nickel 0.00000 0.00000 0.00000 0.00100 0.00200
Potassium 2.1 1.9 3.4 6.0 17.9
Selenium 0 0 0 0.001 0.002
Silicon 2.200 2.100 3.600 6.400 19.200
Silver 0.00000 0.00000 0.00000 0.00000 0.00000
Sodium 0.0 0.0 0.0 0.0 0.0
Strontium 0.02400 0.02200 0.03900 0.07000 0.20910
Thallium 0.00000 0.00000 0.00000 0.00000 0.00000
Tin 0.00000 0.00000 0.00000 0.00100 0.00200
Titanium 0.000 0.000 0.000 0.001 0.002
Uranium 0.00000 0.00000 0.00000 0.00100 0.00300
Vanadium 0.0020 0.0020 0.0039 0.0056 0.0176
Zinc 0.0000 0.0000 0.0010 0.0010 0.0040
All values in mg / L unless otherwise noted
Month
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Table B-9- Ore Storage Pile Predicted Water Quality
Parameter
Physical Tests
Water Temp [c] 2, 10 10, 10, 5, 2
pH (pH units) 4.4 4.4
Alkalinity 1 1Hardness 47.5052 69.1857
Chloride
Nutrients / Organics
Nutrients
Ortho-phosphate
Total Metals
Antimony 0.0001 0.0001
Arsenic 0.00010 0.00020
Barium 0.00930 0.01020
Beryllium 0.00000 0.00000
Bismuth 0.00000 0.00000
Boron 0.01000 0.00990Cadmium 0.00765 0.01097
Calcium 8.800000 12.700000
Chromium 0.0006 0.0007
Cobalt 0.03770 0.05220
Copper 3.93040 4.44590
Iron 0.40300 0.44260
Lead 0.014 0.016
Lithium 0.00500 0.00990
Magnesium 6.20000 9.10000
Manganese 0.3066 0.5357
Mercury 0.00000 0.00000
Nickel 0.020400 0.027600
Potassium 0.20000 0.40000
Selenium 0.0 0.0
Silicon 2.3 3.9
Silver 0.00000 0.00000
Sodium 1.100000 1.400000
Strontium 0.0 0.1
Thallium 0.00010 0.00010
Tin 0.00010 0.00010
Titanium 0.00000 0.00000
Uranium 0.00020 0.00030
Vanadium 0.000000 0.000000
Zinc 2.5283 3.8940
All values in mg / L unless otherwise noted
Jun/Jul Aug/Oct
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Parameter
Physical Tests Jun Jul Aug Sep Oct Jun Jul Aug Sep Oct
Water Temp [c] 2 10 10 5 2 2 10 10 5 2
pH (pH units) 7.8 7.7 8 8.2 8.4 8.3 8.2 8.4 8.5 8.7
Alkalinity 35.3 31.3 56.8 99.9 188.9 121.5 113.7 166.3 201.6 400.2Hardness 21.5 20.0 35.1 61.9 132.0 76.1 70.2 107.5 144.0 332.4
Sulphate 15.0 14.0 25.0 44.0 132.0 54.0 50.0 87.0 155.0 465.0
Nutrients
Total Phosphate 0.0000 0.0000 0.0000 0.1000 0.2000 0.1000 0.1000 0.1000 0.2000 0.7000
Total Metals
Aluminum 0.0432 0.0387 0.0665 0.1186 0.2120 0.1461 0.1363 0.1982 0.2227 0.4273
Antimony 0.02200 0.02100 0.03600 0.06400 0.19310 0.07900 0.07300 0.12700 0.22610 0.68010
Arsenic 0.11160 0.10260 0.18020 0.31960 0.95960 0.39120 0.36140 0.63300 1.12490 3.37840
Barium 0.00100 0.00100 0.00200 0.00400 0.01200 0.00500 0.00400 0.00800 0.01310 0.00670
Beryllium 0.00000 0.00000 0.00000 0.00000 0.00030 0.00000 0.00000 0.00030 0.00020 0.00100
Bismuth 0.00010 0.00010 0.00020 0.00030 0.00100 0.00040 0.00040 0.00060 0.00110 0.00340
Boron 0.023 0.021 0.037 0.066 0.198 0.081 0.075 0.131 0.232 0.698Cadmium 0.00000 0.00000 0.00000 0.00010 0.00020 0.00010 0.00010 0.00010 0.00020 0.00060
Calcium 4.5 4.2 7.3 12.9 16.9 15.8 14.6 19.3 15.6 6.8
Chromium 0.00000 0.00000 0.00000 0.00000 0.00100 0.00000 0.00000 0.00100 0.00100 0.00300
Cobalt 0.00000 0.00000 0.00100 0.00100 0.00300 0.00100 0.00100 0.00200 0.00300 0.01000
Copper 0.00130 0.00130 0.00180 0.00330 0.01270 0.00420 0.00410 0.00880 0.01430 0.04750
Iron 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Lead 0.00000 0.00000 0.00000 0.00000 0.00060 0.00050 0.00000 0.00070 0.00120 0.00340
Lithium 0.00100 0.00100 0.00200 0.00300 0.01000 0.00400 0.00400 0.00700 0.01200 0.03610
Magnesium 2.5 2.3 4.1 7.2 21.8 8.9 8.2 14.4 25.5 76.6
Manganese 0.004 0.003 0.006 0.011 0.032 0.013 0.012 0.021 0.037 0.1122
Molybdenum 0.01200 0.01100 0.01900 0.03300 0.09900 0.04100 0.03800 0.06600 0.11710 0.35050
Nickel 0.00300 0.00300 0.00500 0.00790 0.02480 0.00990 0.00890 0.01590 0.02880 0.08640
Potassium 6.5 6.0 10.6 18.8 56.4 23.0 21.2 37.2 66.1 198.6
Selenium 0.006 0.005 0.009 0.016 0.049 0.02 0.019 0.033 0.058 0.1743
Silicon 0.700 0.600 1.100 1.900 5.800 2.400 2.200 3.900 6.900 20.600
Silver 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00100
Sodium 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
Strontium 0.00800 0.00800 0.01400 0.02400 0.07300 0.03000 0.02700 0.04800 0.08500 0.25640
Thallium 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00100 0.00200
Tin 0.00100 0.00100 0.00100 0.00200 0.00500 0.00200 0.00200 0.00300 0.00600 0.01700
Titanium 0.001 0.001 0.001 0.002 0.005 0.002 0.002 0.003 0.005 0.016
Uranium 0.00000 0.00000 0.00000 0.00000 0.00100 0.00000 0.00000 0.00000 0.00100 0.00200
Vanadium 0.0010 0.0010 0.0010 0.0020 0.0050 0.0020 0.0020 0.0030 0.0060 0.0169
Zinc 0.0010 0.0010 0.0010 0.0019 0.0049 0.0019 0.0019 0.0039 0.0059 0.0186
All values in mg / L unless otherwise noted
3m outer shell 1/2 Total volume
Table B-10 - Backfill Stockpile Predicted Water Quality
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Parameter
Physical Tests Jun Jul Aug Sep Oct Jun Jul Aug Sep Oct
Water Temp [c] 2 10 10 5 2 2 10 10 5 2
pH (pH units) 8 8 8.2 8.4 8.6 8.3 8.4 8.5 8.7 9
Alkalinity 59.3 55.4 96.9 170.5 305.2 136.6 171.1 216.5 316.9 867.8Hardness 22.2 20.8 36.3 63.3 87.6 50.7 63.5 69.4 90.6 230.5
Sulphate 7.0 7.0 12.0 21.0 61.0 16.0 21.0 36.0 64.0 192.0
Nutrients
Total Phosphate 0.1000 0.1000 0.1000 0.3000 0.8000 0.2000 0.3000 0.5000 0.8000 2.4000
Total Metals
Aluminum 0.0952 0.0875 0.1555 0.2881 0.4879 0.2283 0.2893 0.3492 0.5077 1.4604
Antimony 0.01600 0.01500 0.02600 0.04700 0.14110 0.03700 0.04700 0.08300 0.14810 0.44370
Arsenic 0.00170 0.00090 0.00250 0.00400 0.01030 0.00320 0.00390 0.00590 0.01020 0.03090
Barium 0.01800 0.01700 0.03000 0.05300 0.03020 0.04200 0.05400 0.04570 0.02920 0.01570
Beryllium 0.00000 0.00000 0.00000 0.00000 0.00010 0.00000 0.00000 0.00010 0.00010 0.00100
Bismuth 0.00020 0.00020 0.00030 0.00050 0.00140 0.00040 0.00050 0.00080 0.00150 0.00440
Boron 0.079 0.073 0.127 0.226 0.679 0.178 0.229 0.401 0.713 2.141Cadmium 0.00000 0.00000 0.00010 0.00010 0.00029 0.00010 0.00010 0.00020 0.00029 0.00089
Calcium 5.6 5.2 9.1 15.8 6.4 12.7 15.7 10.8 6.1 1.6
Chromium 0.00000 0.00000 0.00000 0.00100 0.00200 0.00100 0.00100 0.00100 0.00200 0.00600
Cobalt 0.00000 0.00000 0.00000 0.00000 0.00100 0.00000 0.00000 0.00100 0.00100 0.00400
Copper 0.00080 0.00040 0.00130 0.00260 0.00960 0.00190 0.00260 0.00510 0.00970 0.03980
Iron 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Lead 0.00000 0.00000 0.00000 0.00000 0.00020 0.00000 0.00000 0.00030 0.00020 0.00210
Lithium 0.00200 0.00200 0.00300 0.00500 0.01500 0.00400 0.00500 0.00900 0.01600 0.04910
Magnesium 2 1.9 3.3 5.8 17.4 4.6 5.9 10.3 18.3 55
Manganese 0.009 0.009 0.015 0.027 0.08 0.021 0.027 0.047 0.084 0.1595
Molybdenum 0.00100 0.00100 0.00200 0.00300 0.00900 0.00200 0.00300 0.00500 0.01000 0.02900
Nickel 0.00000 0.00000 0.00100 0.00100 0.00290 0.00100 0.00100 0.00190 0.00290 0.00880
Potassium 4.3 3.9 6.9 12.2 36.7 9.6 12.4 21.7 38.6 115.8
Selenium 0 0 0 0 0.001 0 0 0.001 0.001 0.004
Silicon 1.500 1.400 2.400 4.200 12.600 3.300 4.300 7.500 13.300 39.800
Silver 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00100
Sodium 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.2
Strontium 0.01600 0.01400 0.02500 0.04500 0.13510 0.03500 0.04600 0.08000 0.14210 0.42560
Thallium 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00100
Tin 0.00000 0.00000 0.00100 0.00100 0.00300 0.00100 0.00100 0.00200 0.00400 0.01100
Titanium 0.001 0.001 0.002 0.004 0.012 0.003 0.004 0.007 0.012 0.037
Uranium 0.00000 0.00000 0.00000 0.00000 0.00100 0.00000 0.00000 0.00100 0.00100 0.00400
Vanadium 0.0019 0.0019 0.0036 0.0058 0.0146 0.0043 0.0058 0.0092 0.0152 0.0402
Zinc 0.0019 0.0019 0.0027 0.0044 0.0146 0.0036 0.0044 0.0092 0.0155 0.0488
All values in mg / L unless otherwise noted
3m outer shell 1/2 Total volume
Table B-11- D NAG Permanent Predicted Water Quality
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Parameter
Physical Tests Jun Jul Aug Sep Oct Jun Jul Aug Sep Oct
Water Temp [c] 2 10 10 5 2 2 10 10 5 2
pH (pH units) 7.9 7.9 8.1 8.3 8.4 8.4 8.4 8.4 8.5 8.7
Alkalinity 49.7 45.8 79.5 138.6 161.4 155.1 153 172.9 210.8 418.8Hardness 12.4 8.2 16.7 29.1 91.6 38.8 35.7 62.5 111.2 334.6
Sulphate 12.0 11.0 20.0 35.0 103.0 75.0 69.0 120.0 214.0 643.0
Nutrients
Total Phosphate 0.2000 0.2000 0.3000 0.5000 1.6000 0.5000 0.5000 0.8000 1.5000 4.4000
Total Metals
Aluminum 0.0670 0.0621 0.1056 0.1904 0.1739 0.1848 0.1854 0.1891 0.2119 0.3905
Antimony 0.02600 0.02400 0.04100 0.07300 0.22010 0.12850 0.11880 0.20790 0.36980 1.11110
Arsenic 0.00220 0.00200 0.00350 0.00590 0.01770 0.28910 0.26730 0.46770 0.83150 2.49740
Barium 0.04900 0.04600 0.06630 0.04390 0.01790 0.02300 0.02460 0.01590 0.01060 0.00570
Beryllium 0.00000 0.00000 0.00000 0.00050 0.00070 0.00020 0.00020 0.00030 0.00060 0.00220
Bismuth 0.00020 0.00020 0.00030 0.00060 0.00180 0.00080 0.00080 0.00130 0.00240 0.00710
Boron 0.133 0.123 0.216 0.384 1.153 0.390 0.360 0.630 1.121 3.369Cadmium 0.00000 0.00000 0.00010 0.00010 0.00040 0.00020 0.00010 0.00030 0.00050 0.00140
Calcium 8.7 8 14 24.4 23.1 21.9 22.1 20 16.7 8
Chromium 0.00000 0.00000 0.00100 0.00100 0.00300 0.00100 0.00090 0.00170 0.00300 0.00890
Cobalt 0.00000 0.00000 0.00000 0.00100 0.00200 0.00160 0.00150 0.00260 0.00450 0.01360
Copper 0.00140 0.00140 0.00270 0.00560 0.01670 0.00840 0.00770 0.01370 0.02460 0.07920
Iron 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Lead 0.00000 0.00000 0.00000 0.00080 0.00140 0.00050 0.00050 0.00080 0.00150 0.00500
Lithium 0.00300 0.00200 0.00400 0.00700 0.02200 0.00930 0.00860 0.01500 0.02670 0.08040
Magnesium 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3
Manganese 0.021 0.02 0.034 0.061 0.1831 0.0583 0.0539 0.0944 0.1679 0.1502
Molybdenum 0.00100 0.00100 0.00200 0.00300 0.00900 0.03710 0.03430 0.06010 0.10690 0.32120
Nickel 0.00000 0.00000 0.00000 0.00100 0.00200 0.00720 0.00660 0.01150 0.02050 0.06160
Potassium 2.1 1.9 3.4 6.0 17.9 23.2 21.4 37.5 66.6 200.1
Selenium 0 0 0 0.001 0.002 0.024 0.0222 0.0388 0.0691 0.2074
Silicon 2.200 2.100 3.600 6.400 19.200 7.200 6.700 11.700 20.800 62.300
Silver 0.0000