Robb Trend Mine Project: Surface Water Quality Report€¦ · Effects on end-pit lakes on surface water quality Design and creation of end-pit lakes as part of reclamation and closure

Suite 200 – 850 Harbourside Drive, North Vancouver, British Columbia, Canada V7P 0A3 • Tel: 1.604.926.3261 • Fax: 1.604.926.5389 • www.hatfi eldgroup.com

Robb Trend Mine Project: Surface Water Quality Report

February 2012

Prepared for:

Coal Valley Resources Inc.Edson, Alberta

#200 - 850 Harbourside Drive, North Vancouver, BC, Canada V7P 0A3 • Tel: 1.604.926.3261 • Toll Free: 1.866.926.3261 • Fax: 1.604.926.5389 • www.hatfieldgroup.com

ROBB TREND PROJECT: SURFACE WATER QUALITY REPORT

Prepared for:

COAL VALLEY RESOURCES INC. BAG 5000

EDSON, ALBERTA T7E 1W1

Prepared by:

HATFIELD CONSULTANTS #200 - 850 HARBOURSIDE DRIVE

NORTH VANCOUVER, BC V7P 0A3

FEBRUARY 2012

MEMS1614.4

Surface Water Quality Report i Hatfield Robb Trend Project

TABLE OF CONTENTS

LIST OF TABLES ......................................................................................... iii LIST OF FIGURES ........................................................................................ iv LIST OF APPENDICES ................................................................................ iv

1.0 INTRODUCTION TO ENVIRONMENTAL ASSESSMENT .................. 1 1.1 OVERVIEW .............................................................................................................. 1 1.2 TERMS OF REFERENCE ........................................................................................ 1 1.3 PROJECT LOCATION ............................................................................................. 1 1.4 DATA SOURCES ..................................................................................................... 2 1.5 GOVERNMENT REGULATION AND POLICY ........................................................ 2

2.0 SCOPE OF ENVIRONMENTAL ASSESSMENT ................................. 3 2.1 SURFACE WATER QUALITY ISSUES CONSIDERED ........................................... 3 2.2 CHARACTERIZATION OF SURFACE WATER QUALITY ...................................... 3 2.2.1 Variables Used to Characterize Surface Water Quality ...................................... 3 2.2.2 Surface Water Quality Measurement Endpoints ................................................. 5 2.3 STUDY AREAS ........................................................................................................ 5 2.3.1 Local Study Area ................................................................................................. 5 2.3.2 Regional Study Area ........................................................................................... 5 2.4 ASSESSMENT CASES ........................................................................................... 6 2.4.1 Baseline Case .................................................................................................... 6 2.4.2 Application Case ................................................................................................. 6 2.4.3 Planned Development Case ............................................................................... 6

3.0 SURFACE WATER QUALITY BASELINE CASE ............................... 6 3.1 HISTORICAL SURFACE WATER QUALITY INFORMATION ................................. 6 3.2 SURFACE WATER QUALITY FIELD PROGRAM ................................................... 7 3.3 SURFACE WATER QUALITY BASELINE FOR LOCAL STUDY AREA ................. 7 3.3.1 Watercourses in Local Study Area Not Downstream of Existing Mines ............ 28 3.3.2 Watercourses in Local Study Area Downstream of Existing Mines .................. 28 3.4 SURFACE WATER QUALITY BASELINE FOR THE REGIONAL STUDY

AREA ..................................................................................................................... 29

4.0 EFFECTS ASSESSMENT ................................................................. 30 4.1 EFFECTS OF MINE CONSTRUCTION ACTIVITIES ............................................. 30 4.1.1 Local Study Area – Application Case ................................................................ 30 4.1.2 Regional Study Area – Application Case .......................................................... 33 4.1.3 Planned Development Case ............................................................................. 33 4.1.4 Level of Confidence and Uncertainties ............................................................. 33 4.2 EFFECTS OF USING NITROGEN-BASED EXPLOSIVES ................................... 33 4.2.1 Local Study Area – Application Case ................................................................ 33 4.2.2 Regional Study Area – Application Case .......................................................... 36

Surface Water Quality Report ii Hatfield Robb Trend Project

4.2.3 Planned Development Case ............................................................................. 36 4.2.4 Level of Confidence and Uncertainties ............................................................. 36 4.3 DISCHARGE FROM IMPOUNDMENTS TO NATURAL WATERCOURSES ........ 36 4.3.1 Local Study Area – Application Case ................................................................ 36 4.3.2 Regional Study Area – Application Case .......................................................... 42 4.3.3 Planned Development Case ............................................................................. 44 4.3.4 Level of Confidence and Uncertainties ............................................................. 44 4.4 EFFECT OF END-PIT LAKE CHARACTERISTICS ON WATER QUALITY ......... 45 4.4.1 Assessment of Validity of Impact Pathways ..................................................... 45 4.4.2 Impact Analysis ................................................................................................. 45 4.4.3 Residual Impact Classification .......................................................................... 57 4.4.4 Level of Confidence and Uncertainties ............................................................. 58 4.5 ENVIRONMENTAL ASSESSMENT SUMMARY ................................................... 58 4.5.1 Summary of Mitigation Measures for Surface Water Quality ............................ 58 4.5.2 Environmental Monitoring ................................................................................. 60 4.5.3 Summary Environmental Assessment .............................................................. 60

5.0 CLOSURE .......................................................................................... 63

6.0 REFERENCES ................................................................................... 64

Surface Water Quality Report iii Hatfield Robb Trend Project

LIST OF TABLES

Table 1 Terms of Reference sections applicable to this assessment. ....................... 1

Table 2 Project surface water quality issues considered in this assessment. .................................................................................................. 3

Table 3 Variables used for surface water quality environmental assessment. .................................................................................................. 4

Table 4 Surface water quality guidelines used in this assessment. ........................... 7

Table 5 Dataset used to characterize the Baseline Case for surface water quality. .......................................................................................................... 8

Table 6 Surface water quality summary for watercourses within Local Study Area that are not downstream of existing mines. ............................. 11

Table 7 Frequencies of guideline exceedance for watercourses in the Local Study Area that are not downstream of existing mines. .................... 15

Table 8 Surface water quality summary for watercourses in the Local Study Area that are downstream of existing mines. ................................... 17

Table 9 Frequencies of guideline exceedance for watercourses in the Local Study Area that are downstream of existing mines. .......................... 21

Table 10 Surface water quality summary for the Regional Study Area. .................... 23

Table 11 Frequencies of guideline exceedance for watercourses in the Regional Study Area. .................................................................................. 27

Table 12 Predicted effect of impoundment discharge on surface water quality in Local Study Area. ........................................................................ 41

Table 13 Predicted effect of impoundment discharge on surface water quality in Regional Study Area. ................................................................... 43

Table 14 Characteristics of end-pit lakes/ponds in the Project reclamation landscape. .................................................................................................. 46

Table 15 Summary information on lakes sampled in end-pit lake study of Hatfield (2011). ........................................................................................... 47

Table 16 Water quality of end-pit lakes and Fairfax Lake sampled in 2010 and 2011. .................................................................................................... 49

Table 17 Environmental assessment summary of the Project. .................................. 61

Surface Water Quality Report iv Hatfield Robb Trend Project

LIST OF FIGURES

Figure 1 Location of Robb Trend Project. ................................................................. 66

Figure 2 Local and Regional Study Areas and sampling locations used to develop surface water quality baseline for Robb Trend Project. ................ 67

Figure 3 Dissolved oxygen depth profiles of lakes sampled in 2010 and 2011. ........................................................................................................... 69

Figure 4 Ionic characteristics of sampled end-pit lakes, a natural lake, groundwater, and surface watercourses in the Coal Valley area. .............. 71

Figure 5 Total dissolved solids depth profiles of sampled lakes. .............................. 73

Figure 6 Relationship between end-pit lake volume and dissolved oxygen concentrations (from Hatfield 2011). ........................................................... 75

LIST OF APPENDICES

Appendix A1 Description of Water Quality Field Program

Appendix A2 Compilation of Water Quality Data Used in the Water Quality Baseline

Appendix A3 Surface Water Quality Model Description and Results

Surface Water Quality Report 1 Hatfield Robb Trend Project

1.0 INTRODUCTION TO ENVIRONMENTAL ASSESSMENT 1.1 OVERVIEW

This report presents an Environmental Impact Assessment (EIA) of the Robb Trend Project (Project) on surface water quality. This report was prepared by Hatfield Consultants Partnership (Hatfield) for Coal Valley Resources Inc. (CVRI) and was prepared as a component of an integrated formal application by CVRI for the Project.

1.2 TERMS OF REFERENCE

The format and contents of this Project report are guided by the Final Terms of Reference (ToR) for the EIA Report for the Project (AENV 2011); the ToR outlines the format and contents for the entire regulatory application and EIA (i.e., all environmental disciplines). This report addresses specific components of the ToR that are relevant to surface water quality (Table 1).

This report is based on the Project design and activities described in CVRI (2012, Section C), including the construction, operation, reclamation, and closure of the Project and related facilities.

Table 1 Terms of Reference sections applicable to this assessment.

Section 3.4 of Final ToR for Project (from AENV 2011) Report Section 3.4.1 Baseline Information Section 3

[A] Describe the baseline water quality of watercourses and waterbodies. Discuss the effects of seasonal variations, flow, and other factors on water quality.

Section 3

3.4.2 Impact Assessment Section 4

[A] Identify Project components that may influence or impact surface water quality. Sections 4.1.1.1, 4.2.1.1, 4.3.1.1, 4.4.1

[B] Describe the potential impacts of the Project on surface water quality: Section 4

discuss any changes in water quality resulting from the Project including impacts on drinking water quality;

Sections 4.1.1.3, 4.2.1.3, 4.3.1.3, 4.4.2

discuss the significance of any impacts on water quality and implications to aquatic resources (e.g., biota, biodiversity and habitat);

Sections 4.1.1.4, 4.2.1.4, 4.3.1.4,

4.4.3, 4.1.2, 4.2.2, 4.3.2, 4.1.3, 4.2.3,

4.3.3

discuss seasonal variation and potential impacts on surface water quality. Section 4

discuss the effects of changes in surface runoff or groundwater discharge on water quality in surface waterbodies

Section 4.1

[C] Describe proposed mitigation measures to maintain surface water quality at all stages of the Project.

Sections 4.1.1.2, 4.2.1.2, 4.3.1.2

1.3 PROJECT LOCATION

The Project will be located along the eastern edge of the Rocky Mountain foothills to the southwest of Edson, Alberta (Figure 1) and is contained within the McLeod and Pembina river basins. The Project area lies within the Alberta Upland Ecoregion and within the Rocky Mountain Foothills Physiographic Region.


1.4 DATA SOURCES

Data sources used in the preparation of this report include:

Specific field studies undertaken in support of this assessment;

Data and information gathered in support of coal mine applications in the Coal Valley area (the Coal Valley Mine (CVM) Extension South Block, Mercoal Phase 2, Mercoal West, and Yellowhead Tower mines);

Environmental monitoring data and information gathered from 2000 to 2007 as part of the approval requirements for the CVM Extension South Block, Mercoal Phase 2, Mercoal West, and Yellowhead Tower mines;

Baseline groundwater conditions and impact assessments as described in the Hydrogeology Report (CR# 3)of this Application (MEMS 2012);

Baseline surface water hydrology conditions and impact assessments as described in the Surface Water Hydrology Report (CR# 6) of this Application (Matrix 2012);

Results of the public consultation program as described in Section G of this Application (MEMS 2012); and

Scientific literature related to water quality and coal mining, with priority given to research results from existing mines in the Coal Valley area.

1.5 GOVERNMENT REGULATION AND POLICY

This report has been prepared in consideration of the following key government laws, regulations, and standards:

Alberta Environmental Protection and Enhancement Act (AEPEA), with associated regulations and amendments in force;

Alberta Water Act (1999), with associated regulations and amendments in force; and

Various surface water quality guidelines: Surface Water Quality Guidelines for Use in Alberta (AENV 1999); the Canadian Council of Ministers of the Environment (CCME) Canadian Water Quality Guidelines (CWQG) (CCME 2006); as well as various guidelines from British Columbia and the US Environmental Protection Agency (USEPA).


2.0 SCOPE OF ENVIRONMENTAL ASSESSMENT

2.1 SURFACE WATER QUALITY ISSUES CONSIDERED

The following sources of information were used to develop the list of surface water quality issues considered in this environmental assessment:

Information obtained from the consultation program conducted by CVRI as part of its application, including Traditional Environmental Knowledge (TEK) and Traditional Land Use (TLU) as described in the TLU Report (Lifeways 2012, CR No. 12);

The scope and findings of surface water quality impact assessments for previous environmental assessments for mines in the Coal Valley area (Luscar 1999, MEMS 2005, CVRI 2008); and

Issues identified from a review of the Project mine plan (Section C).

The issues considered in this environmental assessment are summarized in Table 2.

Table 2 Project surface water quality issues considered in this assessment.

Issue/Description of Impact Project Activities Soil erosion, sediments entering streams via surface runoff, increased sedimentation of surface waters

Project construction activities including: logging and soil stripping, development of dewatering system, building of haul roads and stream crossings

Leaching of nitrates into surface waters Use of bulk explosives to break overburden rock Discharges of water from impoundments to natural watercourses

Pit dewatering Surface runoff from mining areas, haul roads, overburden dumps, and other disturbed areas Use of flocculants in settling ponds

Effects on end-pit lakes on surface water quality Design and creation of end-pit lakes as part of reclamation and closure activities

2.2 CHARACTERIZATION OF SURFACE WATER QUALITY

2.2.1 Variables Used to Characterize Surface Water Quality

Surface water quality is the Valued Environmental Component (VEC)1 considered in this assessment. The selection of surface water quality variables considered in this report was guided by a review of:

Water quality variables used in previous environmental assessments for mines in the Coal Valley area (Luscar 1999, MEMS 2005, CVRI 2008);

Requirements of the ToR for this EIA;

1 Defined in CEAA (1999) as “any part of the environment that is considered important by the proponent, public, scientists and government involved in the assessment process. Importance may be determined on the basis of cultural values or scientific concern”.


Water quality variables that have regulatory concern in the form of guidelines;

Water quality concerns and issues raised during the public consultation conducted during the preparation of this EIA; and

Various water quality variables required for interpretation of effects on other aquatic components, particularly fish populations and human health.

The surface water quality variables used in this assessment are presented in Table 3.

Table 3 Variables used for surface water quality environmental assessment.

Group Water Quality Variables Conventional variables Colour Total dissolved solids

Dissolved organic carbon Hardness pH Total organic carbon Conductivity Total suspended solids Total alkalinity Dissolved oxygen

Major ions Bicarbonate Potassium Carbonate Sodium Chloride Sulphate Magnesium Sulphide Calcium

Nutrients Nitrate Total phosphorus Nitrate + nitrite Dissolved phosphorus Ammonia nitrogen Nitrite

Total Kjeldahl nitrogen

Organics and Hydrocarbons

Naphthenic acids Total recoverable hydrocarbons Total phenols

Metals Aluminum Manganese Antimony Mercury Arsenic Molybdenum Barium Nickel Beryllium Selenium Bismuth Silver Boron Strontium Cadmium Thallium Chromium Thorium Cobalt Tin Copper Titanium Iron Uranium Lead Vanadium Lithium Zinc

Note: All variables used to characterize existing surface water quality conditions in Baseline Case (Section 3); water quality variables in bold are used for effects assessment (Section 4).


2.2.2 Surface Water Quality Measurement Endpoints

The measurement endpoints used in this report are as follows:

Frequency of exceedance of surface water quality guideline values; and

Concentration of water quality variables relative to water quality guideline values.

Guidelines for the protection of aquatic life are used in the assessment and the specific surface water quality guidelines are provided in Table 4.

2.3 STUDY AREAS

2.3.1 Local Study Area

The Local Study Area (LSA) for the Project is defined by the small drainages that begin within or run through the Project permit boundary (Figure 2); some of these are downstream of existing mines while others are not:

1. Bryan Creek, an unnamed creek draining into the Embarrass River near Robb, Hay Creek, Mitchell Creek, Bacon Creek, Lendrum Creek, and an unnamed creek draining into the Pembina River at the time this assessment was prepared were not downstream of existing mines.

2. Jackson Creek, Erith River, Halpenny Creek, Lund Creek, and Lendrum Creek are downstream of existing mines.

2.3.2 Regional Study Area

The Regional Study Area (RSA) for the Project is defined by the LSA plus the following watercourses (Figure 2):

Embarras River from its confluence with Jackson Creek downstream to its confluence with the Erith River;

The Erith River from its confluence with Lund Creek to its confluence with the Embarras River; and

Pembina River beginning at its confluence with the unnamed creek draining into the Pembina River at the southeastern end of the Project permit boundary to approximately 10 km downstream.


2.4 ASSESSMENT CASES

2.4.1 Baseline Case

The Baseline Case consists of the following existing and approved mines upstream of the Project: Mercoal East Phase 2; South Block, West Extension; Mercoal West; and Yellowhead Tower. For the purposes of this environmental assessment, it is assumed that any effects of the existing projects that define the Baseline Case on surface water quality are already reflected in the data gathered to establish the baseline conditions and these existing projects will not cause any larger or different effects on surface water quality in the future.

2.4.2 Application Case

The Application Case is an assessment of the incremental environmental effects of the Project to existing conditions as represented by the Baseline Case. The Application Case is a cumulative effects assessment of adding the residual environmental impacts of the Project to existing environmental conditions in the study areas.

2.4.3 Planned Development Case

The Vista Coal Project, currently under preparation by Coalspur Mines Ltd. with recoverable reserves estimated at 522 million tonnes, would be located to the northwest of the Project, in the McLeod River basin and the Planned Development Case (PDC) is an assessment of the incremental environmental effects of the Project plus the planned Vista Coal Project.

3.0 SURFACE WATER QUALITY BASELINE CASE 3.1 HISTORICAL SURFACE WATER QUALITY INFORMATION

CVRI has measured surface water quality in numerous watercourses throughout the LSA and RSA under various surface water sampling field programs in the Coal Valley area. All data included in the surface water quality Baseline Case met at least one of the following criteria:

1. The data were obtained after 1997 in order to be included in the Project surface water quality Baseline Case. This criterion was applied to ensure data that were used would include effects of existing projects and developments on surface water quality, and would therefore characterize existing development conditions in the study areas, including wherever possible, the potential effects of the CVM Extension Mercoal South Block, Mercoal Phase 2, Mercoal West, and Yellowhead Tower mines.

2. The data were obtained from watercourses that would potentially be influenced by the Project.

Table 5 contains a summary of the historical surface water quality data used for characterizing baseline surface water quality conditions in the LSA and RSA.


Table 4 Surface water quality guidelines used in this assessment.

Water Quality Variable Units Guideline Value Source of Guideline Aluminum mg/L 0.1 at pH>=6.5 (CCME 1987) Ammonia-N mg/L 1.37 at pH 8.0, 10oC (CCME 2001) Arsenic mg/L 0.005 CCME (1997) Barium mg/L 5 BC MOE (2006) Boron mg/L 1.2 BC ambient water quality guideline for boron

(BC 2003) Cadmium mg/L 10(0.86*log10(Hardness)-3.2)/1000 (CCME 1996)

Chloride mg/L 230 USEPA continuous concentration guideline Chromium mg/L 0.001 Guideline for chromium III is 0.0089 mg/L; guideline for

chromium VI is 0.001 mg/L (CCME 1997). More stringent guideline (0.001 mg/L) is used.

Cobalt mg/L 0.11 BC working water quality guideline (BC 2006a) Copper mg/L e(0.8545*ln(Hardness)-1.465)*0.2/1000 (CCME 1987)

Dissolved oxygen mg/L 5 Alberta acute guideline for dissolved oxygen (AENV 1999); guideline is a minimum value

Dissolved phosphorous mg/L 0.05 AENV (1993): Guideline is for chronic total (inorganic and organic) phosphorus

Iron mg/L 0.3 CCME (1987) Lead mg/L e(1.273*ln(Hardness)-4.705)/1000 (CCME 1987)

Lithium mg/L 0.87 BC MOE (2006) Mercury ng/l 5 for chronic concentrations (AENV 1999) Molybdenum mg/L 0.073 CCME (1999) Nickel mg/L e(0.76*ln(Hardness)+1.06)/1000 (CCME 1987)

Nitrate mg/L 13 CCME (2003) Nitrite mg/L 0.06 CCME (1987) pH pH units 6.5-9.0 CCME (2007), AENV (1999) guideline: "To be in the

range of 6.5 to 8.5 but not altered by more than 0.5 pH units from background values."

Phenols mg/L 0.004 CCME (1999) Selenium mg/L 0.001 CCME (1987) Silver mg/L 0.0001 CCME (1987) Sulphate mg/L 50 BC approved water quality guideline (BC 2006b) Sulphide mg/L 0.002 USEPA continuous concentration guideline (as H2S) Thallium mg/L 0.0008 CCME (1999) Titanium mg/L 0.1 BC working water quality guideline (BC 2006a) Total phosphorus mg/L 0.05 AENV (1993): Guideline is for chronic total (inorganic

and organic) phosphorus Total Suspended Solids mg/L +10 mg/L AENV (1999): "Not to be increased by more than

10 mg/L over background value." Uranium mg/L 0.015 CCME (2011) Zinc mg/L 0.03 CCME (1987)

3.2 SURFACE WATER QUALITY FIELD PROGRAM

Table 5 contains a summary of the surface water quality field sampling program conducted to augment the historical surface water quality data. Appendix A1 contains a description of methods used for the field sampling program, as well as a QA/QC analysis of surface water quality data obtained.

3.3 SURFACE WATER QUALITY BASELINE FOR LOCAL STUDY AREA

Detailed surface water quality information for the Baseline Case is found in Appendix A2. Table 6 to Table 11 provide summary water quality information for the Baseline Case.


Table 5 Dataset used to characterize the Baseline Case for surface water quality.

Site Details Historical Data Record2 Additional Data

Collected 2009-2011

Site Code Watercourse and Description

UTM1 Start Year

End Year

No. Samples Sp Su Fa Wi

Easting Northing Sp Su Fa Wi Local Study Area Not Downstream of Existing Mines BRC Bryan Creek 500934 5897760 2010 2011 - - - - 1 1 1 1 HA-WQ-1 Hay Creek 502950 5897679 2005 2008 1 1 1 1 - - - - HA-WQ-2 Hay Creek 503080 5897713 2005 2009 1 1 1 1 - - - 1 LC Lendrum Creek 527545 5872812 2006 2008 2 2 2 2 - - - - LUC Lund Creek 526158 5882795 2007 2009 2 2 2 1 - - - - MC Mitchell Creek 510694 5904167 2008 2010 1 1 1 - 1 1 1 2 PRC Prest Creek 497315 5903477 2010 2010 - - - - 1 1 1 - UCNR Unnamed Creek immediately north of Robb 502156 5900048 2010 2011 - - - - 1 1 1 1 UTPC Unnamed tributary of Prest Creek 524327 5872614 2008 2009 1 1 1 - 1 1 1 1 UTWC-E Unnamed tributary of White Creek, East 494470 5902653 2010 2010 - - - - 1 1 1 - UTWC-W Unnamed tributary of White Creek, West 493244 5901719 2010 2010 - - - - 1 1 1 -

Local Study Area Downstream of Existing Mines BC Bacon Creek 515533 5892073 2006 2008 2 2 2 2 - - - - ERT1-WQ Erith River 512710 5888602 2005 2008 2 1 1 2 - - - - ER-WQ-0.5 Erith River 503540 5882115 2005 2005 - - 1 - - - - - ER-WQ-1 Erith River 508300 5890612 2005 2005 1 1 1 - - - - - ER-WQ-2 Erith River 512710 5890407 2005 2005 1 1 1 - - - - - ER-WQ-3 Erith River 515996 5890347 2005 2005 1 1 1 - - - - - ET1 Erith River 507241 5886375 2002 2009 1 1 3 - - 1 - 1 ET2 Erith River 507492 5889924 2005 2010 1 1 1 1 - 1 1 2 ET3 Erith River downstream of Halpenny Creek 515739 5890369 2006 2009 1 1 1 2 - 1 - - HPC Halpenny Creek 515690 5890264 1997 2006 1 2 1 1 - - - -

1 Zone 11, NAD83. Refer to Figure 2 for location of sampling sites. 2 1997 to 1998: data gathered in support of EIA for Coal Valley Mine Extension (Luscar 1999); 2004 and 2005 data gathered for Luscar Ltd. (Pisces 2006); 2006 and 2007 data

gathered in support of the EIA for the Mercoal West/Yellowhead Tower Extension. Sp – spring; Su – summer; Fa – fall; Wi – winter


Table 5 Cont’d.

Site Details Historical Data Record2 Additional Data

Collected 2009-2011

Site Code Watercourse and Description

UTM1 Start Year

End Year

No. Samples Sp Su Fa Wi

Easting Northing Sp Su Fa Wi Regional Study Area EM-1 Embarras River 499471 5891184 2006 2006 1 - 1 1 - - - - EM-2 Embarras River between Jackson and Bryan Creeks 500334 5893512 1998 2006 2 2 1 1 - - - - EM-3 Embarras River above Prest Creek 507158 5906033 1997 1998 2 2 1 1 - - - - EM-4 Embarras River above confluence with Erith River 521678 5915808 1997 1998 2 2 1 - - - - - EM-RC Embarras River upstream of Rodney Creek 522886 5918924 2006 2011 1 1 1 1 1 1 1 1 EM-WQ-1 Embarras River between Jackson and Bryan Creeks 501170 5895200 2005 2009 1 1 1 - - - - 1 EM-WQ-2 Embarras River below Bryan Creek 502920 5899428 2005 2009 1 1 1 - - - - 1 EM-WQ-3 Embarras River above Prest Creek 507240 5905735 2005 2005 1 1 1 - - - - 1 EM-WQ-4 Embarras River above confluence with Erith River 521697 5914462 2005 2005 - - - 1 - - - - ET4 Erith River upstream of confluence with Embarras River 522863 5912658 1997 2009 3 3 2 1 - 1 1 - PR1 Pembina River 521535 5870438 1997 1998 2 2 2 - - - - - PR2 Pembina River 523576 5870563 1997 2008 2 1 1 2 - - - - PR3 Pembina River 524834 5869538 1997 1998 2 2 2 - - - - - PR4 Pembina River 528914 5864957 1997 1998 2 2 2 - - - - - PR5 Pembina River 539606 5878363 1998 2009 2 1 1 2 - - 1 - PR6 Pembina River 545859 5888609 1998 2009 1 1 1 - - - 1 1 PR7 Pembina River downstream of Wolf Creek 573819 5891667 1998 2009 1 2 2 - - 1 - 1 PR8 Pembina River downstream of Rat Creek 604167 5888056 1998 2009 1 2 2 - - 1 - 1

1 Zone 11, NAD83. Refer to Figure 2 for location of sampling sites. 2 1997 to 1998: data gathered in support of EIA for Coal Valley Mine Extension (Luscar 1999); 2004 and 2005 data gathered for Luscar Ltd. (Pisces 2006); 2006 and 2007 data

gathered in support of the EIA for the Mercoal West/Yellowhead Tower Extension. Sp – spring; Su – summer; Fa – fall; Wi – winter


This page intentionally left blank for printing purposes.


Table 6 Surface water quality summary for watercourses within Local Study Area that are not downstream of existing mines.

Water Quality Variable Units Regulatory Guideline

Spring Summer Fall Winter Annual Concentration Concentration Concentration Concentration Concentration

n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Conventional Variables Alkalinity, Total (as CaCO3) mg/L - 15 98.8 48.3 166 0 13 166 85.8 224 0 15 133 67.9 193 0 12 233 147 1198 0 55 144 0 Color, True T.C.U. - 8 61 30 88 0 11 37 11 58 0 11 42 12 60 0 12 9 3 27 0 42 28.5 0 Conductivity (EC) µS/cm - 13 170 98 305 0 11 319 173 392 0 13 254 146 369 0 12 417.5 268 533 0 49 275 0 Dissolved Organic Carbon mg/L - 13 13 7 17 0 13 9 3 17.2 0 13 9.5 2.8 14.7 0 12 3.55 2 9.6 0 51 9 0 Dissolved Oxygen mg/L 5 13 9.9 5.65 11.7 0 8 7.275 2.84 9.3 0 9 10 7.2 12.6 0 9 11.81 6.1 13.11 0 39 9.8 0 Hardness (as CaCO3) mg/L - 15 88.1 41.4 159 0 13 141 62.5 201 0 15 116 55.3 174 0 12 203 96.9 262 0 55 123 0 Oil and Grease mg/L - 3 0.05 0.05 0.05 0 2 0.05 0.05 0.05 0 2 0.05 0.05 0.05 0 0 - - - - 7 0.05 0 pH pH 6.5-9.0 15 8.1 7.5 8.3 0 13 8.2 7.79 8.5 0 15 8.2 7.76 8.4 0 12 8.155 7.9 8.2 0 55 8.1 0 Temperature oC - 7 8.7 0.12 16.64 0 11 13.3 8.4 19.61 0 8 5.25 1 17 0 8 0.09 0.04 1.16 0 34 7.875 0 Total Dissolved Solids mg/L - 15 132 64 197 0 15 180 105 236 0 15 161 110 227 0 12 250 160 320 0 57 167 0 Total Organic Carbon mg/L - 13 14 8 15.7 0 13 9 3 22 0 13 9.8 2.8 14.9 0 12 3.5 2 10 0 51 9 0 Total Suspended Solids mg/L 15 <3.0 <3.0 263 53 15 <3.0 <3.0 9 60 15 <3.0 <3.0 209 80 11 <3.0 <3.0 6 73 56 <3.0 66 Turbidity NTU - 7 6 2.2 85.5 0 8 0.505 0.01 3.11 0 2 1.3 1.2 1.4 0 5 0.95 0.04 2.25 0 22 1.6 0 General Organics Hydrocarbons, Recoverable (I.R.) mg/L - 9 <1.0 0.5 <1.0 56 10 0.945 0.5 <1.0 50 13 <1.0 0.5 2.5 38 12 0.5 0.5 <1.0 25 44 0.5 41 Naphthenic Acids mg/L - 11 <1.0 <1.0 <1.0 100 12 <1.0 <1.0 <1.0 100 13 <1.0 <1.0 2 92 12 <1.0 <1.0 <1.0 100 48 <1.0 98 Phenols (4AAP) mg/L 0.004 12 0.0037 0.002 0.01 0 12 0.003 <0.001 0.01 17 13 0.0029 <0.001 0.01 15 12 0.001 <0.001 0.00 42 49 0.003 18 Major Ions Bicarbonate (HCO3) mg/L - 15 120 59 200 0 13 203 105 257 0 15 162 82.9 235 0 12 277 180 348 0 55 176 0 Calcium (Ca) mg/L - 15 24 <0.5 47 7 13 40 19 58 0 15 34 17 52 0 12 59 30 74 0 55 36 2 Carbonate (CO3) mg/L - 15 <5.0 <5.0 <5.0 100 13 <5.0 <5.0 8 85 15 <5.0 <5.0 <5.0 100 12 <5.0 <5.0 <5.0 100 55 <5.0 96 Chloride (Cl) mg/L 230b 13 1 <0.5 4.6 38 11 1 <0.5 8 36 13 <0.5 <0.5 8.33 54 12 1.74 <0.5 22.9 42 49 1 43 Hydroxide (OH) mg/L - 13 <5.0 <5.0 <5.0 100 11 <5.0 <5.0 <5.0 100 13 <5.0 <5.0 102 85 11 <5.0 <5.0 <5.0 100 48 <5.0 96 Magnesium (Mg) mg/L - 15 4.7 0.1 10.2 0 13 8.7 3.54 13.6 0 15 7.5 3.17 11.9 0 12 13.4 5.39 19 0 55 7.9 0 Potassium (K) mg/L - 15 0.9 0.5 1.7 0 13 0.8 <0.5 1.3 8 15 0.7 <0.5 1.03 13 12 1 0.8 1.63 0 55 0.9 5 Sodium (Na) mg/L - 15 8.8 5 13 0 13 13 9.6 17.7 0 15 10.5 6.8 15.8 0 12 17.5 11 22.1 0 55 11 0 Sulfate (SO4) mg/L 50 15 3.14 1 9.5 0 13 2.7 <0.5 9.6 8 15 2.5 <0.5 12.3 7 12 6.1 2.7 12.5 0 55 3.6 4 Sulphide mg/L 0.002b 13 0.003 <0.002 0.006 31 12 <0.002 <0.002 <0.002 100 13 <0.002 <0.002 0.004 85 12 <0.002 <0.002 <0.002 100 50 <0.002 78 Nutrients and BOD Biochemical Oxygen Demand mg/L - 13 <2.0 <2.0 <2.0 100 13 <2.0 <2.0 <2.0 100 13 <2.0 <2.0 3 85 11 <2.0 <2.0 4.9 82 50 <2.0 92 Ammonia-N mg/L 1.04a 13 <0.05 <0.05 <0.05 100 13 <0.05 <0.05 <0.05 100 11 <0.05 <0.05 <0.05 100 12 <0.05 <0.05 <0.05 100 49 <0.05 100 Nitrate (as N) mg/L 13 5 <0.05 <0.05 0.12 80 6 <0.05 <0.05 0.2 83 5 <0.05 <0.05 <0.05 100 2 0.1 <0.05 0.10 50 18 <0.05 83 Nitrate+Nitrite-N mg/L - 15 <0.1 <0.071 0.12 93 13 <0.1 <0.071 0.2 92 15 <0.1 <0.071 0.4 93 12 <0.1 <0.071 0.3 42 55 <0.1 82 Nitrite (as N) mg/L 0.06 7 <0.05 <0.05 <0.05 100 8 <0.05 <0.05 <0.05 100 7 <0.05 <0.05 <0.05 100 2 <0.05 <0.05 <0.05 100 24 <0.05 100 Phosphorus, Total mg/L 0.05c 15 0.01 0.006 0.18 0 15 0.01 0.004 0.05 0 15 0.01 0.003 0.1 0 12 0.005 0.002 0.022 0 57 0.01 0 Phosphorus, Total Dissolved mg/L 0.05c 13 0.006 0.0035 0.012 0 12 0.0042 0.002 0.011 0 13 0.005 0.002 0.010 0 12 0.002 <0.001 0.009 8 50 0.0047 2 Total Kjeldahl Nitrogen mg/L - 15 0.6 <0.2 1.0 7 14 0.3 <0.2 1.3 36 15 0.3 <0.2 0.4 27 12 <0.2 <0.2 0.7 92 56 0.3 38 Total Metals Aluminum (Al) mg/L 0.1d 15 0.24 0.018 5.22 0 15 0.12 0.016 0.653 0 15 0.07 0.010 0.415 0 12 0.03 0.004 0.143 0 57 0.11 0 Antimony (Sb) mg/L - 15 0.00008 0.00002 <0.0002 13 15 0.00008 0.00002 <0.0002 13 15 0.00006 0.000015 <0.0002 13 12 0.00006 0.00004 0.0000727 0 57 0.00006 11 Arsenic (As) mg/L 0.005 15 0.0006 0.0003 0.002 13 15 0.0007 0.0004 0.002 0 15 0.0005 0.0003 <0.001 13 12 0.0004 0.0003 <0.001 0 57 0.0006 7 Barium (Ba) mg/L 5 15 0.061 0.023 0.19 0 15 0.088 0.032 0.11 0 15 0.068 0.025 0.096 0 12 0.11 0.055 0.14 0 57 0.081 0 Beryllium (Be) mg/L 15 0.00003 <0.00001 <0.001 33 15 <0.00001 <0.00001 <0.001 67 15 <0.00001 <0.00001 <0.001 73 12 <0.00001 <0.00001 <0.00001 100 57 <0.00001 67 Bismuth (Bi) mg/L 15 <0.00001 <0.00001 <0.0001 80 15 <0.00001 <0.00001 <0.0001 93 15 <0.00001 <0.00001 <0.0001 100 12 <0.00001 <0.00001 0.000013 92 57 <0.00001 91 Boron (B) mg/L 1.2 15 0.007 0.0046 <0.02 13 15 0.010 0.0054 <0.02 13 15 0.008 0.0043 <0.02 13 12 0.012 0.0070 <0.02 0 57 0.009 11 Cadmium (Cd) mg/L calculatede 13 0.000008 <0.000006 0.00010 31 13 <0.000006 <0.000006 0.00001 62 13 <0.000006 <0.000006 0.00001 54 12 0.000008 <0.000006 0.00007 42 51 0.0000064 47 Chlorine mg/L - 13 <0.3 <0.3 3.1 77 13 <0.3 <0.3 6.1 69 13 0.37 <0.3 8.9 46 11 0.9 <0.3 19.3 27 50 <0.3 56 Chromium VI (Cr6+) mg/L 0.001 15 0.0004 <0.0003 0.007 47 15 <0.0003 <0.0003 0.001 80 15 <0.0003 <0.0003 <0.0008 80 12 <0.0003 <0.0003 <0.0003 100 57 <0.0003 75 Cobalt (Co) mg/L 0.11 15 0.00015 0.00005 0.0021 13 15 0.00008 0.00005 0.0004 7 15 0.00005 0.00005 <0.0002 13 12 0.00005 0.00005 0.00013 0 57 0.00006 9 Copper (Cu) mg/L calculatedf 13 0.00097 0.00016 0.006 0 13 0.0007 0.00016 0.005 0 13 0.0005 0.00013 0.001 0 12 0.0005 0.0003 0.0008 0 51 0.00066 0 Iron (Fe) mg/L 0.3 15 0.31 0.14 4.7 0 15 0.26 0.066 1 0 15 0.28 0.042 0.52 0 12 0.18 <0.004 0.81 8 57 0.27 2 Lead (Pb) mg/L calculatedg 15 0.00010 <0.000006 0.0034 7 15 0.00005 0.000014 0.0003 7 15 0.000037 <0.000006 0.00018 27 12 0.00004 <0.000006 0.0002 17 57 0.00007 14 Lithium (Li) mg/L 0.87 15 0.0021 0.00082 0.005 0 15 0.0036 0.0017 0.006 0 15 0.0029 0.0015 0.0061 0 12 0.0051 0.0035 0.0062 0 57 0.0036 0 Manganese (Mn) mg/L - 15 0.021 0.004 0.2 0 15 0.024 0.0053 0.1 0 15 0.024 0.008 0.1 0 12 0.024 0.0098 0.2 0 57 0.024 0 Mercury Trace (Hg)e ng/L 5 13 2.4 <1.2 11 31 13 <1.2 <1.2 1.6 85 13 <1.2 <1.2 2.3 69 11 <1.2 <1.2 <1.2 100 50 <1.2 70 Molybdenum (Mo) mg/L 0.073 15 0.00039 0.0001 0.00079 0 15 0.00069 0.0002 0.001 0 15 0.0005 0.0001 0.001 0 12 0.0008 <0.000008 0.001 8 57 0.00067 2 Nickel (Ni) mg/L calculatedh 15 0.0007 0.00015 0.006 0 15 0.0003 <0.00006 0.0018 27 15 0.0003 <0.00006 0.0009 33 12 0.0001 <0.00006 0.000429 75 57 0.0003 32 Selenium (Se) mg/L 0.001 15 <0.0002 <0.0002 <0.0008 73 15 <0.0002 <0.0002 <0.0008 87 15 <0.0002 <0.0002 <0.0008 87 12 <0.0002 <0.0002 0.00043 58 57 <0.0002 77




Table 6 (Cont’d.)



n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Silver (Ag) mg/L 0.0001 15 0.0000082 <0.000005 <0.0001 47 15 <0.000005 <0.000005 <0.0001 67 15 <0.000005 <0.000005 0.00009 73 12 <0.000005 <0.000005 0.000011 67 57 <0.000005 63 Strontium (Sr) mg/L - 15 0.16 0.047900 0.326 0 15 0.237 0.107000 0.395 0 15 0.185 0.089300 0.446 0 12 0.45 0.20 0.58 0 57 0.23 0 Sulphur (S) mg/L - 15 0.97 <0.6 3.5 20 15 0.7 <0.6 5.5 47 15 0.64 <0.6 3.8 20 12 2.2 0.001 4.25 8 57 1.0 25 Thallium (Tl) mg/L 0.0008 15 0.00001 <0.000003 0.000107 27 15 0.00001 <0.000003 <0.0001 27 15 <0.000003 <0.000003 <0.0001 60 12 <0.000003 <0.000003 0.00001 50 57 0.000005 40 Thorium mg/L - 13 0.00006 <0.00003 0.001 31 13 <0.00003 <0.00003 0.00009 62 13 <0.00003 <0.00003 0.00005 77 12 <0.00003 0.00002 0.00005 92 51 <0.00003 65 Tin (Sn) mg/L - 15 <0.00007 <0.00007 0.0005 73 15 <0.00007 <0.00007 0.000522 73 15 <0.00007 <0.00007 0.0005 87 12 <0.00007 <0.00007 0.0059 75 57 <0.00007 77 Titanium (Ti) mg/L 0.100 15 <0.005 0.001 0.11 13 15 0.003 0.00098 0.01 7 15 0.003 0.001 0.01 7 12 0.002 0.001 0.00 0 57 0.003 7 Uranium (U) mg/L 0.015 15 0.00011 0.000006 0.0008 13 15 0.00027 0.00001 0.0008 13 15 0.00023 0.000008 0.0008 13 12 0.00085 0.0003 0.001 0 57 0.000317 11 Vanadium (V) mg/L - 15 0.00071 0.0001 0.012 0 15 0.00054 0.0001 0.002 0 15 0.00036 0.0001 0.001 0 12 0.00023 0.0001 0.0004 0 57 0.00037 0 Zinc (Zn) mg/L 0.030 15 <0.003 <0.003 0.02 73 14 <0.003 <0.003 0.004 93 15 <0.003 <0.003 <0.003 100 12 <0.003 <0.003 <0.003 100 56 <0.003 91 Dissolved Metals Aluminum (Al) mg/L 0.1d 13 0.030 0.004 0.405 0 13 0.006 <0.001 0.0321 8 13 0.006 0.002 0.083 0 12 <0.001 <0.001 0.0084 33 51 0.006 10 Antimony (Sb) mg/L - 13 0.00007 0.00002 0.000167 0 13 0.00007 0.00002 0.000094 0 13 0.00005 0.00001 0.000074 0 12 0.00006 0.00004 0.000072 0 51 0.00006 0 Arsenic (As) mg/L 0.005 13 0.0004 0.00025 0.00063 0 13 0.0006 0.00032 0.0013 0 13 0.00047 0.00027 0.00072 0 12 0.00033 0.00023 0.00050 0 51 0.000461 0 Barium (Ba) mg/L 5 13 0.048 0.021 0.077 0 13 0.08 0.031 0.096 0 13 0.069 0.024 0.087 0 12 0.1065 0.0505 0.133 0 51 0.0761 0 Beryllium (Be) mg/L 13 <0.00001 <0.00001 0.00002 62 13 <0.00001 <0.00001 0.00005 85 13 <0.00001 <0.00001 0.00001 69 12 <0.00001 <0.00001 <0.00001 100 51 <0.00001 78 Bismuth (Bi) mg/L 13 <0.00001 <0.00001 0.00002 92 13 <0.00001 <0.00001 0.00005 92 13 <0.00001 <0.00001 <0.00001 100 12 <0.00001 <0.00001 0.000013 92 51 <0.00001 94 Boron (B) mg/L 1.2 13 0.0058 0.0038 0.0094 0 13 0.0089 0.0046 0.012 0 13 0.0065 0.0041 0.0092 0 12 0.0104 0.0055 0.014 0 51 0.00722 0 Cadmium (Cd) mg/L calculatede 13 <0.000006 <0.000006 0.00001 46 13 <0.000006 <0.000006 0.00001 62 13 <0.000006 <0.000006 0.00001 85 12 <0.000006 <0.000006 0.00003 58 51 <0.000006 63 Chlorine mg/L - 13 <0.3 <0.3 3 77 13 <0.3 <0.3 5.85 69 13 0.369 <0.3 8.73 46 12 1.0 <0.3 19.1 25 51 <0.3 55 Chromium VI (Cr6+) mg/L 0.001 13 <0.0003 <0.0003 0.000643 54 13 <0.0003 <0.0003 <0.0003 100 13 <0.0003 <0.0003 0.000446 92 12 <0.0003 <0.0003 <0.0003 100 51 <0.0003 86 Cobalt (Co) mg/L 0.11 13 0.00006 0.00002 0.00011 0 13 0.00002 <0.00001 0.00005 8 13 0.00003 <0.00001 0.00008 15 12 0.00002 0.00001 0.00008 33 51 0.00003 14 Copper (Cu) mg/L calculatedf 13 0.00096 0.0002 0.0018 0 13 0.0004 <0.0001 0.0013 8 13 0.0004 0.0001 0.0012 0 12 0.0004 0.0003 0.00077 0 51 0.0005 2 Iron (Fe) mg/L 0.3 13 0.130 0.020 0.295 0 13 0.050 <0.004 0.33 15 13 0.11 0.005 0.32 0 12 0.008 <0.004 0.454 50 51 0.067 16 Lead (Pb) mg/L calculatedg 13 0.00004 <0.000006 0.000095 15 13 0.00002 <0.000006 0.00005 38 13 0.00001 <0.000006 0.000055 31 12 0.00001 <0.000006 0.000025 33 51 0.00002 29 Lithium (Li) mg/L 0.87 13 0.0016 0.00068 0.0036 0 13 0.0029 0.0016 0.0054 0 13 0.0028 0.0014 0.0059 0 12 0.0051 0.0029 0.0061 0 51 0.0029 0 Manganese (Mn) mg/L - 13 0.005 0.0010 0.01 0 13 0.003 0.0008 0.02 0 13 0.016 0.0022 0.03 0 12 0.021 0.0056 0.20 0 51 0.009 0 Molybdenum (Mo) mg/L 0.073 13 0.00037 0.0001 0.001 0 13 0.00078 0.0002 0.001 0 13 0.00059 0.0001 0.001 0 12 0.00078 0.0005 0.001 0 51 0.00067 0 Nickel (Ni) mg/L calculatedh 13 0.00029 <0.00006 0.0012 8 13 0.00017 <0.00006 0.0015 31 13 <0.00006 <0.00006 0.00067 54 12 <0.00006 <0.00006 0.00039 83 51 0.00012 43 Selenium (Se) mg/L 0.001 13 <0.0003 0.00019 0.00033 92 13 0.00019 0.00019 <0.0003 100 13 0.00019 0.00019 <0.0003 100 12 0.00024 0.00014 0.00041 75 51 0.00019 92 Silver (Ag) mg/L 0.0001 13 <0.000005 <0.000005 0.000008 77 13 <0.000005 <0.000005 <0.000005 92 13 <0.000005 <0.000005 0.000006 92 12 <0.000005 <0.000005 <0.000005 100 51 <0.000005 90 Strontium (Sr) mg/L - 13 0.12 0.05 0.3 0 13 0.22 0.10 0.4 0 13 0.18 0.09 0.4 0 12 0.44 0.18 0.6 0 51 0.22 0 Sulphur (S) mg/L - 13 1.0 <0.6 3.3 23 13 0.7 <0.6 5.36 46 13 0.8 <0.6 3.78 23 12 1.9 0.8 4.1 0 51 1.0 24 Thallium (Tl) mg/L 0.0008 13 0.0000032 <0.000003 0.0000095 46 13 0.0000048 <0.000003 0.00005 23 13 <0.000003 <0.000003 0.0000074 69 12 0.0000029 0.000003 0.000011 67 51 <0.000003 51 Thorium mg/L - 13 <0.00003 <0.00003 0.00014 46 13 <0.00003 <0.00003 0.00005 85 13 <0.00003 <0.00003 0.00005 77 12 <0.00003 <0.00003 0.00005 92 51 <0.00003 75 Tin (Sn) mg/L - 13 <0.00007 <0.00007 <0.00007 100 13 <0.00007 <0.00007 <0.00007 100 13 <0.00007 <0.00007 <0.00003 100 12 <0.00003 <0.00003 0.00031 92 51 <0.00007 98 Titanium (Ti) mg/L 0.100 13 0.0019 0.0006 0.0090 0 13 0.0012 0.0008 0.0016 0 13 0.0012 0.0008 0.0038 0 12 0.0011 0.0009 0.0026 0 51 0.00117 0 Uranium (U) mg/L 0.015 13 <0.000003 <0.000003 <0.000003 100 13 <0.000003 <0.000003 <0.000003 100 13 <0.000003 <0.000003 <0.000003 100 12 <0.000003 <0.000003 0.0007 92 51 <0.000003 98 Vanadium (V) mg/L - 13 0.0001 0.0001 <0.0002 38 13 0.0001 0.0001 <0.0002 38 13 0.0001 0.0001 <0.0002 38 12 0.0001 0.0001 <0.0002 25 51 0.0001 35 Zinc (Zn) mg/L 0.030 13 <0.003 <0.003 0.008 85 13 <0.003 <0.003 0.003 100 13 <0.003 <0.003 <0.003 100 12 <0.003 <0.003 <0.003 100 51 <0.003 96 Number of cases and percentage with concentrations below detection limits 1241 28 1215 35 1240 35 1064 36 4760 33




Table 7 Frequencies of guideline exceedance for watercourses in the Local Study Area that are not downstream of existing mines.

Units Regulatory Guideline

Spring Summer Fall Winter TotalAbove

GuidelinesAbove

GuidelinesAbove

GuidelinesAbove

Guidelines Above

Guidelinesn % n % n % n % n %

Ammonia-N mg/L 1.04a - - - - - - - - - - Chloride (Cl) mg/L 230b - - - - - - - - - - Dissolved Oxygen mg/L 5 - - 2 25 - - - - 2 5 Nitrate (as N) mg/L 13 - - - - - - - - - - Nitrite (as N) mg/L 0.06 - - - - - - - - - - pH pH 6.5-9.0 - - - - - - - - - - Phenols (4AAP) mg/L 0.004 3 25 3 25 1 8 - - 7 14 Phosphorus, Total mg/L 0.05c 4 27 - - 1 7 - - 5 9 Phosphorus, Total Dissolved mg/L 0.05c - - - - - - - - - -

Sulfate (SO4) mg/L 50 - - - - - - - - - - Sulphide mg/L 0.002b 9 69 - - 2 15 - - 11 22 Total Metals Aluminum (Al) mg/L 0.1d 13 87 8 53 7 47 2 17 30 53 Arsenic (As) mg/L 0.005 - - - - - - - - - - Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede 2 15 - - - - 1 8 3 6 Chromium VI (Cr6+) mg/L 0.001 4 27 - - - - - - 4 7 Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 4 31 1 8 - - - - 5 10 Iron (Fe) mg/L 0.3 8 53 6 40 7 47 4 33 25 44 Lead (Pb) mg/L calculatedg 1 7 - - - - - - 1 2 Lithium (Li) mg/L 0.87 - - - - - - - - - - Mercury Trace (Hg)e ng/L 5 3 23 - - - - - - 3 6 Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - - - - - - - - - Silver (Ag) mg/L 0.0001 - - - - - - - - - - Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 2 13 - - - - - - 2 4 Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 - - - - - - - - - - Dissolved Metals - - - - - - - - - - Aluminum (Al) mg/L 0.1d 5 38 - - - - - - 5 10 Arsenic (As) mg/L 0.005 - - - - - - - - - - Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede - - - - - - - - - - Chromium VI (Cr6+) mg/L 0.001 - - - - - - - - - - Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 2 15 - - - - - - 2 4 Iron (Fe) mg/L 0.3 - - 2 15 1 8 1 8 4 8 Lead (Pb) mg/L calculatedg - - - - - - - - - - Lithium (Li) mg/L 0.87 - - - - - - - - - - Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - - - - - - - - - Silver (Ag) mg/L 0.0001 - - - - - - - - - - Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 - - - - - - - - - - Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 - - - - - - - - - - All water quality variables 60 8.9 22 3.3 19 2.8 8 1.4 109 4.2 Total and dissolved metals 44 5.4 17 2.1 15 1.8 8 1.1 84 2.7




Table 8 Surface water quality summary for watercourses in the Local Study Area that are downstream of existing mines.



n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Conventional Variables Alkalinity, Total (as CaCO3) mg/L - 11 104 78 1170 0 11 148 120 191 0 10 100 74 222 0 11 215 152 1263 0 43 148 0 Color, True T.C.U. - 6 36 11 70 0 6 14.5 6 45 0 8 17.5 15 75 0 11 7 4 11 0 31 15 0 Conductivity (EC) µS/cm - 8 200.5 161 325 0 7 311 290 346 0 5 322 197 408 0 11 380 311 631 0 31 322 0 Dissolved Organic Carbon mg/L - 7 9 4 14 0 8 3.95 2 8.5 0 4 4.5 2.2 13 0 11 3 2 4 0 30 4 0 Dissolved Oxygen mg/L 5 7 10.2 7.52 13.2 0 7 9.48 8.64 10.3 0 6 11.525 9 12.2 0 9 12.41 5.91 13.21 0 29 10.3 0 Hardness (as CaCO3) mg/L - 11 88 67 135 0 11 127 97 158 0 14 102 73 180 0 11 163 130 271 0 47 126 0 Oil and Grease mg/L - 2 0.05 0.05 0.05 0 3 0.05 0.05 0.05 0 1 0.05 0.05 0.05 0 0 - - - - 6 0.05 0 pH pH 6.5-9.0 11 8.2 8.1 8.3 0 11 8.3 8.1 8.4 0 14 8.1 7.5 8.5 0 11 8.2 8 8.22 0 47 8.2 0 Temperature oC - 5 9.2 6.5 11.14 0 8 9.9 6.8 16.03 0 3 5.5 1.2 5.68 0 9 0.05 0 0.14 0 25 6.5 0 Total Dissolved Solids mg/L - 11 127 37.5 184 0 14 179 127 465 0 14 143.5 90 236 0 11 218 173 367 0 50 176 0 Total Organic Carbon mg/L - 8 9.05 4 14 0 10 5 2 10.1 0 5 5 2.3 13 0 11 3 1.7 4 0 34 4 0 Total Suspended Solids mg/L 11 16 <3.0 554 18 14 3.5 <3.0 34 7 14 12.4 <3.0 186 14 11 <3.0 <3.0 <3.0 100 50 4.5 32 Turbidity NTU - 4 45 8.32 359 0 7 2.12 0.01 3.9 0 1 214 214 214 0 6 1.25 0.47 10.2 0 18 2.21 0 General Organics Hydrocarbons, Recoverable (I.R.) mg/L - 4 0.5 0.5 0.5 0 4 0.55 0.5 0.8 0 4 0.5 0.5 2.5 0 11 0.5 0.5 0.99 9 23 0.5 4 Naphthenic Acids mg/L - 6 <1.0 <1.0 <1.0 100 7 <1.0 <1.0 4 71 4 <1.0 <1.0 2 75 11 <1.0 <1.0 <1.0 100 28 <1.0 89 Phenols (4AAP) mg/L 0.004 7 0.002 <0.001 0.028 14 9 0.0011 <0.001 0.026 33 9 <0.001 <0.001 0.004 67 11 0.001 <0.001 0.001 45 36 <0.001 42 Major Ions Bicarbonate (HCO3) mg/L - 11 126 95 207 0 11 181 146 225 0 10 122 90 257 0 11 236 185 412 0 43 181 0 Calcium (Ca) mg/L - 11 26.5 21.8 42 0 11 39.3 29.4 46.1 0 14 30.5 22.5 54.1 0 11 49.6 39.3 74.8 0 47 38 0 Carbonate (CO3) mg/L - 10 <5.0 <5.0 <5.0 100 9 <5.0 <5.0 <5.0 100 9 <5.0 <5.0 7 89 11 <5.0 <5.0 <5.0 100 39 <5.0 97 Chloride (Cl) mg/L 230b 8 0.75 0.5 2 0 7 1 0.5 2 0 5 1 0.5 1.21 0 11 1 0.5 2 0 31 1 0 Hydroxide (OH) mg/L - 6 <5.0 <5.0 <5.0 100 5 <5.0 <5.0 <5.0 100 4 <5.0 <5.0 98.8 75 8 <5.0 <5.0 <5.0 100 23 <5.0 96 Magnesium (Mg) mg/L - 11 5.1 2.9 8.1 0 11 7.6 5.6 10.5 0 14 5.8 4 11.4 0 11 9.6 7.3 20.5 0 47 7.2 0 Potassium (K) mg/L - 10 0.75 <0.5 1.5 10 11 0.8 0.6 1.15 9 14 0.8 0.6 2.2 0 11 1 0.7 1.3 0 46 0.8 4 Sodium (Na) mg/L - 11 10 8 22 0 11 18 9.9 21 0 14 10.5 6.6 24 0 11 22 18 41 0 47 17 0 Sulfate (SO4) mg/L 50 11 4.9 1.5 11.7 0 11 6.1 3.1 19.9 0 14 5.85 2 16.8 0 11 9.9 3.6 17.1 0 47 6.1 0 Sulphide mg/L 0.002b 7 0.002 <0.002 0.008 43 7 <0.002 <0.002 <0.002 100 8 <0.002 <0.002 0.038 88 11 <0.002 <0.002 <0.002 100 33 <0.002 85 Nutrients and BOD Biochemical Oxygen Demand mg/L - 6 <2.0 <2.0 <2.0 100 8 <2.0 <2.0 <2.0 100 4 <2.0 <2.0 3 75 8 <2.0 <2.0 <2.0 100 26 <2.0 96 Ammonia-N mg/L 1.04a 8 <0.05 <0.05 0.27 88 10 <0.05 <0.05 <0.05 100 8 <0.05 <0.05 <0.05 100 11 <0.05 <0.05 <0.05 100 37 <0.05 97 Nitrate (as N) mg/L 13 0 - - - - 1 0.2 0.2 0.2 0 4 0.11 <0.1 0.86 50 0 - - - - 5 <0.1 40 Nitrate+Nitrite-N mg/L - 11 <0.1 <0.1 0.4 45 11 <0.1 0.05 0.3 45 10 <0.1 0.05 0.16 70 11 0.2 <0.1 0.6 9 43 <0.1 42 Nitrite (as N) mg/L 0.06 3 <0.05 <0.05 <0.05 100 5 <0.05 <0.05 <0.05 100 9 <0.05 <0.05 <0.05 100 0 - - - - 17 <0.05 100 Phosphorus, Total mg/L 0.05c 11 <0.05 0.004 0.3 9 14 <0.01 0.004 0.1 7 14 0.03495 0.004 0.2 7 11 0.004 0.0012 0.007 0 50 0.01 6 Phosphorus, Total Dissolved mg/L 0.05c 7 0.005 0.002 0.016 0 8 0.003 0.0027 0.0067 0 4 0.0045 0.002 0.01 0 11 0.002 0.001 0.004 0 30 0.003 0 Total Kjeldahl Nitrogen mg/L - 11 0.22 <0.2 1 27 11 <0.2 <0.2 2.13 55 10 0.31 <0.2 0.5 20 11 <0.2 <0.2 <0.2 100 43 <0.2 51 Total Metals Aluminum (Al) mg/L 0.1d 11 0.909 0.0604 8.24 0 14 0.301 0.0407 1.6 0 13 0.63 0.026 3.59 0 11 0.0604 0.0488 0.0943 0 49 0.28 0 Antimony (Sb) mg/L - 11 0.00018 0.00007 <0.0002 45 14 0.00015 0.00007 0.00031 43 13 <0.0002 0.00007 0.0015 62 11 0.000064 0.000054 0.000091 0 49 0.0001 39 Arsenic (As) mg/L 0.005 10 <0.001 0.0004 0.0024 40 12 0.00065 0.00048 0.00108 33 12 <0.001 0.00041 <0.001 75 11 0.00040 0.00024 0.00061 0 45 0.0006 38 Barium (Ba) mg/L 5 11 0.078 0.06 0.28 0 14 0.1 0.07 0.109 0 13 0.086 0.053 0.12 0 11 0.113 0.0681 0.176 0 49 0.087 0 Beryllium (Be) mg/L 11 0.00033 <0.00001 <0.001 45 14 0.0000191 <0.00001 <0.001 50 13 <0.00001 <0.00001 <0.001 85 11 <0.00001 <0.00001 <0.00001 100 49 0.00003 69 Bismuth (Bi) mg/L 11 0.000054 <0.00001 <0.007 55 14 <0.00001 <0.00001 <0.007 100 13 <0.00001 <0.00001 <0.007 100 11 <0.00001 <0.00001 <0.00001 100 49 0.000014 90 Boron (B) mg/L 1.2 11 0.0113 0.00832 <0.02 45 14 0.018 0.012 0.061 43 13 <0.02 0.0092 0.02 69 11 0.0128 0.0109 0.024 0 49 0.018 41 Cadmium (Cd) mg/L calculatede 6 0.000021 0.000011 0.00020 0 8 0.000011 <0.000006 0.000017 13 3 0.00001 <0.000006 0.00001 33 11 <0.000006 <0.000006 0.0000121 55 28 0.000009 29 Chlorine mg/L - 6 0.313 0.299 0.706 50 8 0.8345 0.299 1.67 25 3 0.989 0.299 1.9 33 8 0.752 0.299 1.77 38 25 0.69 36 Chromium VI (Cr6+) mg/L 0.001 11 0.0009 0.00040 0.0117 27 14 0.00065 <0.0003 0.0023 50 13 <0.0008 <0.0003 0.0024 46 11 <0.0003 <0.0003 0.00068 82 49 0.0008 51 Cobalt (Co) mg/L 0.11 11 0.00036 0.00008 0.0037 18 14 0.00016 0.00005 <0.0007 36 13 0.0003 0.00005 <0.0007 23 11 0.00005 0.000050 0.00009 0 49 0.0002 20 Copper (Cu) mg/L calculatedf 8 0.0017 <0.0001 0.0098 25 10 0.00091 <0.0001 0.002 10 8 0.001 0.00046 0.003 13 11 0.00056 0.00031 0.00067 0 37 0.001 11 Iron (Fe) mg/L 0.3 11 0.873 0.0424 7.21 0 14 0.293 0.0735 1.3 0 13 0.67 0.090 1.6 0 11 0.108 0.0378 0.214 0 49 0.29 0 Lead (Pb) mg/L calculatedg 11 0.00049 0.000085 0.0073 18 14 0.00016 0.0000063 <0.002 29 13 0.0004 <0.000006 <0.002 23 11 0.000043 0.000023 0.000077 0 49 0.00016 18 Lithium (Li) mg/L 0.87 11 0.0029 0.0015 0.0076 0 14 0.004 0.0023 0.009 0 9 0.0015 0.0015 0.0066 0 11 0.00526 0.00221 0.00953 0 45 0.004 0 Manganese (Mn) mg/L - 11 0.024 0.0038 0.2 0 14 0.0187 0.008 0.048 0 13 0.03 0.0091 0.05 0 11 0.0212 0.00381 0.064 0 49 0.021 0 Mercury Trace (Hg)e ng/L 5 7 4 <1.2 23 29 8 <1.2 <1.2 1.5 75 3 1.9 <1.2 2.1 33 10 <1.2 <1.2 <1.2 100 28 1.2 68 Molybdenum (Mo) mg/L 0.073 11 0.0005 0.00026 0.001 0 14 0.001 0.0005 0.0067 0 13 0.0007 0.00049 0.0016 0 11 0.00109 0.000705 0.00162 0 49 0.0008 0




Table 8 (Cont’d.)



n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Nickel (Ni) mg/L calculatedh 11 0.0012 0.0005 0.0114 9 14 0.0006 <0.00006 0.002 7 13 0.00072 0.00012 0.0024 8 11 <0.00006 <0.00006 0.00014 64 49 0.0005 20 Selenium (Se) mg/L 0.001 10 0.00042 <0.0002 <0.0008 70 12 0.00051 <0.0002 0.001 67 12 <0.0008 <0.0002 <0.0008 100 11 <0.0003 <0.0002 0.001 55 45 0.0005 73 Silver (Ag) mg/L 0.0001 10 0.000068 <0.000005 0.0005 50 12 0.0000064 <0.000005 0.0005 67 12 <0.0001 <0.000005 0.0002 67 11 <0.000005 <0.000005 0.000012 91 45 0.000007 69 Strontium (Sr) mg/L - 11 0.17 <0.000008 0.22 9 14 0.236 0.195 0.397 0 13 0.16 0.00019 0.28 0 11 0.324 0.233 0.538 0 49 0.224 2 Sulphur (S) mg/L - 10 1.02 <0.6 4.9 30 14 2.09 0.683 17.4 0 8 1.31 0.7 3.02 0 11 3.08 0.62 5.05 0 43 1.5 7 Thallium (Tl) mg/L 0.0008 10 0.000088 0.0000076 0.00018 40 12 0.000009 <0.000003 <0.0001 42 12 <0.0001 <0.000003 <0.0001 83 11 <0.000003 <0.000003 0.000007 55 45 0.00002 56 Thorium mg/L - 6 0.0002 <0.00003 0.002 17 8 0.000039 <0.00003 0.00011 50 3 <0.00003 <0.00003 0.0000472 67 11 <0.00003 <0.00003 <0.00003 100 28 0.00003 64 Tin (Sn) mg/L - 11 <0.00007 <0.00007 <0.003 73 14 <0.00007 <0.00007 <0.003 71 13 0.00039 <0.00007 0.005 54 11 <0.00007 <0.00007 0.00021 91 49 0.00007 71 Titanium (Ti) mg/L 0.100 11 0.014 0.003 0.093 9 14 0.0069 0.00173 0.0254 14 13 0.011 0.0014 0.064 0 11 0.00259 0.00179 0.00516 0 49 0.007 6 Uranium (U) mg/L 0.015 10 0.00035 <0.0001 0.00091 30 12 0.00050 <0.0001 0.00424 33 12 0.00019 <0.0001 0.0006 42 11 0.0008 0.0004 0.0019 0 45 0.000431 27 Vanadium (V) mg/L - 11 0.002 0.00027 0.0172 0 14 0.00094 0.00036 0.0015 14 13 0.0015 0.00023 0.0039 8 11 0.0003 0.0002 0.0005 0 49 0.00093 6 Zinc (Zn) mg/L 0.030 11 0.005 <0.003 0.0465 27 14 <0.003 <0.003 0.006 71 13 0.005 <0.003 0.015 31 11 <0.003 <0.003 0.0078 64 49 0.003 49 Dissolved Metals Aluminum (Al) mg/L 0.1d 6 0.07 0.011 0.11 0 8 0.0051 0.0022 0.023 0 3 0.00227 0.00225 0.0581 0 11 0.00147 <0.001 0.0038 9 28 0.004 4 Antimony (Sb) mg/L - 6 0.00011 0.00007 0.00018 0 8 0.000097 0.000073 0.00031 0 3 0.0000701 0.0000653 0.0000747 0 11 0.00006 0.00005 0.00009 0 28 0.00007 0 Arsenic (As) mg/L 0.005 6 0.00041 0.00033 0.00043 0 8 0.00051 0.00041 0.001 0 3 0.00041 0.00036 0.00052 0 11 0.00033 0.00024 0.00048 0 28 0.00041 0 Barium (Ba) mg/L 5 6 0.061 0.042 0.067 0 8 0.092 0.0772 0.102 0 3 0.083 0.050 0.092 0 11 0.1 0.065 0.16 0 28 0.091 0 Beryllium (Be) mg/L 6 <0.00001 <0.00001 0.000012 67 8 <0.00001 <0.00001 <0.00001 100 3 <0.00001 <0.00001 <0.00001 100 11 <0.00001 <0.00001 <0.00001 100 28 0.00001 93 Bismuth (Bi) mg/L 6 <0.00001 <0.00001 0.000014 83 8 <0.00001 <0.00001 <0.00001 100 3 <0.00001 <0.00001 <0.00001 100 11 <0.00001 <0.00001 <0.00001 100 28 0.00001 96 Boron (B) mg/L 1.2 6 0.008 0.0074 0.01 0 8 0.01 0.01 0.06 0 3 0.011 0.009 0.012 0 11 0.012 0.009 0.024 0 28 0.011 0 Cadmium (Cd) mg/L calculatede 6 0.0000075 <0.000006 0.000015 17 8 0.0000078 <0.000006 0.000014 38 3 <0.000006 <0.000006 0.000010 67 11 <0.000006 <0.000006 0.000012 73 28 0.000006 50 Chlorine mg/L - 6 0.307 <0.3 0.7 50 8 0.6 <0.3 1.7 38 3 0.99 <0.3 1.9 33 11 0.7 <0.3 1.8 36 28 0.35 39 Chromium VI (Cr6+) mg/L 0.001 6 <0.0003 <0.0003 0.0004 83 8 <0.0003 <0.0003 0.00047 75 3 <0.0003 <0.0003 0.0005 67 11 <0.0003 <0.0003 0.00063 82 28 0.0003 79 Cobalt (Co) mg/L 0.11 6 0.000063 0.000039 0.000091 0 8 0.000029 0.000015 0.000054 0 3 0.00003 0.00002 0.00004 0 11 0.00002 <0.00001 0.00004 27 28 0.00003 11 Copper (Cu) mg/L calculatedf 6 0.0014 0.0011 0.002 0 8 0.00056 <0.0001 0.0013 13 3 0.0007 0.00045 0.0013 0 11 0.00055 0.00029 0.00066 0 28 0.0006 4 Iron (Fe) mg/L 0.3 6 0.08 0.02 0.13 0 8 0.005 <0.004 0.048 50 3 0.063 0.035 0.12 0 11 <0.004 <0.004 0.031 73 28 0.01 43 Lead (Pb) mg/L calculatedg 6 0.000056 0.000021 0.000082 0 8 0.000017 <0.000006 0.000032 13 3 <0.000006 <0.000006 0.000050 67 11 0.000007 <0.000006 0.000041 36 28 0.00001 25 Lithium (Li) mg/L 0.87 6 0.0017 0.0009 0.0033 0 8 0.0038 0.0022 0.0089 0 3 0.0028 0.0025 0.0039 0 11 0.005 0.002 0.009 0 28 0.0034 0 Manganese (Mn) mg/L - 6 0.0058 0.0024 0.013 0 8 0.0075 0.0003 0.017 0 3 0.012 0.004 0.016 0 11 0.014 0.0017 0.058 0 28 0.007 0 Molybdenum (Mo) mg/L 0.073 6 0.00053 0.00026 0.00073 0 8 0.0011 0.0007 0.0066 0 3 0.0007 0.0005 0.0009 0 11 0.0011 0.00069 0.0016 0 28 0.00093 0 Nickel (Ni) mg/L calculatedh 6 0.0004 <0.00006 0.001 33 8 0.00016 <0.00006 0.0014 25 3 0.00025 0.00011 0.00042 0 11 <0.00006 <0.00006 0.000069 91 28 0.000064 50 Selenium (Se) mg/L 0.001 6 0.00024 <0.0002 0.00047 67 8 0.0003445 <0.0002 0.00103 50 3 <0.0002 <0.0002 <0.0003 100 11 0.0003 0.0002 0.0009 73 28 <0.0003 68 Silver (Ag) mg/L 0.0001 6 <0.000005 <0.000005 0.0000051 83 8 <0.000005 <0.000005 <0.000005 100 3 <0.000005 <0.000005 <0.000005 100 11 <0.000005 <0.000005 <0.000005 100 28 0.000005 96 Strontium (Sr) mg/L - 6 0.2 0.1 0.2 0 8 0.25 0.21 0.38 0 3 0.25 0.12 0.27 0 11 0.29 0.23 0.50 0 28 0.25 0 Sulphur (S) mg/L - 6 0.78 <0.6 4.57 33 8 3.8 0.6 17.2 0 3 1.14 0.93 2.94 0 11 2.9 0.61 4.28 0 28 2.4 7 Thallium (Tl) mg/L 0.0008 6 0.000005 0.000005 0.000008 0 8 0.000004 <0.000003 0.00002 25 3 0.000006 <0.000003 0.00002 33 11 <0.000003 <0.000003 0.000007 64 28 0.0000041 36 Thorium mg/L - 6 0.00006 <0.00003 0.00009 17 8 <0.00003 <0.00003 <0.00003 100 3 <0.00003 <0.00003 0.00005 67 11 <0.00003 <0.00003 <0.00003 100 28 0.00003 79 Tin (Sn) mg/L - 6 <0.00007 <0.00007 <0.00007 100 8 <0.00007 <0.00007 <0.00007 100 3 <0.00007 <0.00007 <0.00007 100 11 <0.00007 <0.00007 <0.00007 100 28 <0.00007 100 Titanium (Ti) mg/L 0.100 6 0.004 0.001 0.006 0 8 0.0009 0.00079 0.002 0 3 0.0009 0.00086 0.004 0 11 0.001 0.0009 0.0036 0 28 0.001 0 Uranium (U) mg/L 0.015 6 <0.000003 <0.000003 <0.000003 100 8 <0.000003 <0.000003 <0.000003 100 3 <0.000003 <0.000003 <0.000003 100 11 <0.000003 <0.000003 0.0007 73 28 0.000003 89 Vanadium (V) mg/L - 6 0.0001 0.0001 0.0001 0 8 0.0001 0.0001 0.0001 0 3 0.0001 0.0001 0.0001 0 11 0.0001 0.0001 0.0003 9 28 0.0001 4 Zinc (Zn) mg/L 0.030 6 0.004 <0.003 0.009 50 8 <0.003 <0.003 0.0032 88 3 <0.003 <0.003 <0.003 100 11 <0.003 <0.003 0.008 82 28 0.003 79 Number of cases and percentage with concentrations below detection limits 748 24 913 29 703 30 971 34 3335 29




Table 9 Frequencies of guideline exceedance for watercourses in the Local Study Area that are downstream of existing mines.

Water Quality Variable Units Regulatory

Guideline


Guidelines Above

Guidelines Above

Guidelines Above

Guidelines Above

Guidelines

n % n % n % n % n Freq %

Ammonia-N mg/L 1.04a - - - - - - - - - - Chloride (Cl) mg/L 230b - - - - - - - - - - Dissolved Oxygen mg/L 5 - - - - - - - - - - Nitrate (as N) mg/L 13 - - - - - - - - - - Nitrite (as N) mg/L 0.06 - - - - - - - - - - pH pH 6.5-9.0 - - - - - - - - - - Phenols (4AAP) mg/L 0.004 1 14 2 22 - - - - 3 8 Phosphorus, Total mg/L 0.05c 5 45 2 14 6 43 - - 13 26 Phosphorus, Total Dissolved mg/L 0.05c - - - - - - - - - -

Sulfate (SO4) mg/L 50 - - - - - - - - - - Sulphide mg/L 0.002b 3 43 - - 1 13 - - 4 12 Total Metals Aluminum (Al) mg/L 0.1d 10 91 11 79 11 85 - - 32 65 Arsenic (As) mg/L 0.005 - - - - - - - - - - Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede 2 33 - - - - - - 2 7 Chromium VI (Cr6+) mg/L 0.001 5 45 2 14 4 31 - - 11 22 Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 4 50 - - 2 25 - - 6 16 Iron (Fe) mg/L 0.3 9 82 5 36 8 62 - - 22 45 Lead (Pb) mg/L calculatedg 2 18 - - - - - - 2 4 Lithium (Li) mg/L 0.87 - - - - - - - - - - Mercury Trace (Hg)e ng/L 5 3 43 - - - - - - 3 11 Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - 1 8 - - - - 1 2 Silver (Ag) mg/L 0.0001 1 10 1 8 1 8 - - 3 7 Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 - - - - - - - - - - Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 1 9 - - - - - - 1 2 Dissolved Metals - - - - - - - - - - Aluminum (Al) mg/L 0.1d 1 17 - - - - - - 1 4 Arsenic (As) mg/L 0.005 - - - - - - - - - - Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede - - - - - - - - - - Chromium VI (Cr6+) mg/L 0.001 - - - - - - - - - - Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 2 33 - - - - - - 2 7 Iron (Fe) mg/L 0.3 - - - - - - - - - - Lead (Pb) mg/L calculatedg - - - - - - - - - - Lithium (Li) mg/L 0.87 - - - - - - - - - - Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - 1 13 - - - - 1 4 Silver (Ag) mg/L 0.0001 - - - - - - - - - - Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 - - - - - - - - - - Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 - - - - - - - - - - All water quality variables 49 12 25 5 33 9 - - 107 6 Total and dissolved metals 40 8 21 3 26 6 - - 87 4




Table 10 Surface water quality summary for the Regional Study Area.



n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Conventional Variables Alkalinity, Total (as CaCO3) mg/L - 28 94.5 43 140 0 26 118 51 193 0 27 147 81 200 0 17 200 137 1158 0 98 119.5 0 Color, True T.C.U. - 21 25 15 50 0 22 42 13 65 0 21 20 12 50 0 16 7.5 4 11 0 80 21 0 Conductivity (EC) µS/cm - 28 178 100 239 0 26 212 112 357 0 27 287 173 368 0 15 386 288 512 0 96 222 0 Dissolved Organic Carbon mg/L - 8 8 4 12 0 7 7 4 9.9 0 9 6 3.3 12 0 16 3 2 4 0 40 4.05 0 Dissolved Oxygen mg/L 5 14 12.3 6.32 15.1 0 12 9.75 6.78 11.3 0 14 11.9 7.4 13.3 0 16 12.445 8.79 13.96 0 56 11.485 0 Hardness (as CaCO3) mg/L - 27 79.4 42.4 133 0 26 98 <1.0 169 4 27 119 <1.0 180 7 17 160 <1.0 212 12 97 100 5 Oil and Grease mg/L - 2 0.5 0.5 0.5 0 2 0.5 0.5 0.5 0 0 - - - - 0 - - - - 4 0.5 0 pH pH 6.5-9.0 25 8.15 7.61 8.4 0 23 8.22 7.78 8.5 0 24 8.255 7.94 8.8 0 16 8.115 7.9 8.2 0 88 8.2 0 Temperature oC - 6 11.95 10.4 22.95 0 7 15.4 11.6 18.97 0 5 7.46 2.4 16 0 16 0.06 0 1.3 0 34 3.3 0 Total Dissolved Solids mg/L - 28 113 20.4 172 0 29 130 62 208 0 27 168 95 224 0 17 223 170 322 0 101 135 0 Total Organic Carbon mg/L - 25 8.5 4 12.2 0 26 9 4 17.3 0 24 4.9 3.4 12 0 17 3 1 5 0 92 7.4 0 Total Suspended Solids mg/L 28 8.5 <1.0 92 11 29 7 <1.0 36 17 27 <3.0 <1.0 217 52 16 <3.0 <3.0 4 75 100 5 34 Turbidity NTU - 4 9.85 7.25 14.8 0 5 2.9 0.01 11 0 0 - - - - 10 1.75 0.04 12.6 0 19 7 0 General Organics Hydrocarbons, Recoverable (I.R.) mg/L - 3 0.5 0.5 <1.0 33 4 0.7 0.5 <1.0 25 4 0.5 0.5 <1.0 25 10 0.5 0.5 1.6 10 21 0.5 19 Naphthenic Acids mg/L - 5 <1.0 <1.0 <1.0 100 6 <1.0 <1.0 <1.0 100 5 <1.0 <1.0 1 80 13 <1.0 <1.0 1 92 29 <1.0 93 Phenols (4AAP) mg/L 0.004 20 0.002 <0.001 0.004 35 23 <0.001 <0.001 0.012 78 23 <0.001 <0.001 0.003 74 16 <0.001 <0.001 0.001 94 82 <0.001 70 Major Ions Bicarbonate (HCO3) mg/L - 28 115 52 167 0 27 144 <5.0 222 4 27 169 99 237 0 17 244 167 312 0 99 145 1 Calcium (Ca) mg/L - 28 24.3 11.8 39.7 0 27 30 <0.5 56.2 4 27 38.9 22.7 52.7 0 17 50 36 60.9 0 99 31.7 1 Carbonate (CO3) mg/L - 12 <5.0 <5.0 <5.0 100 8 <5.0 <5.0 7 50 12 <5.0 <5.0 4.99 100 17 <5.0 <5.0 <5.0 100 49 <5.0 92 Chloride (Cl) mg/L 230b 25 1 <0.5 2.6 32 23 1.1 <0.5 4.4 39 24 0.60 <0.5 5.14 50 16 2 <0.5 4 25 88 1 38 Hydroxide (OH) mg/L - 8 <5.0 <5.0 6.2 88 4 <5.0 <5.0 12.3 75 8 <5.0 <5.0 10.8 75 13 <5.0 <5.0 12.2 92 33 <5.0 85 Magnesium (Mg) mg/L - 28 5.1 <0.1 8.6 4 26 5.7 <0.1 11.5 4 27 7.8 <0.1 12.3 7 17 10.6 <0.1 14.5 6 98 6.55 5 Potassium (K) mg/L - 24 <1.0 <0.5 1.7 42 26 <1.0 0.5 <1.0 69 27 <1.0 0.5 2.69 26 17 1 0.7 1.3 0 94 <1.0 37 Sodium (Na) mg/L - 28 8.2 3.9 12.2 0 26 8.95 3.3 16 0 27 13.2 5.7 26 0 17 20 10 36 0 98 10.25 0 Sulfate (SO4) mg/L 50 28 5.15 3.5 11.5 0 26 5.4 3.8 14 0 27 11.4 3.87 29.9 0 17 10.2 5.6 54.4 0 98 6.85 0 Sulphide mg/L 0.002b 8 <0.002 <0.002 0.003 88 7 <0.002 <0.002 0.002 86 9 <0.002 <0.002 0.002 89 16 <0.002 <0.002 <0.002 100 40 <0.002 93 Nutrients and BOD Biochemical Oxygen Demand mg/L - 8 <2.0 <2.0 2 88 6 <2.0 <2.0 2 83 8 <2.0 <2.0 <2.0 100 12 <2.0 <2.0 <2.0 100 34 <2.0 94 Ammonia-N mg/L 1.04a 25 <0.05 <0.05 0.065 96 25 <0.05 <0.05 0.06 96 21 <0.05 <0.05 0.08 95 16 <0.05 <0.05 <0.05 100 87 <0.05 97 Nitrate (as N) mg/L 13 6 <0.1 <0.05 <0.1 100 2 0.0695 <0.05 <0.1 100 4 <0.1 <0.05 <0.1 100 5 0.2 0.081 0.4 20 17 <0.1 76 Nitrate+Nitrite-N mg/L - 25 0.06 <0.05 0.45 84 25 <0.05 <0.05 0.11 84 24 0.085 <0.05 0.28 71 14 0.3 0.081 1 7 88 <0.071 68 Nitrite (as N) mg/L 0.06 7 <0.05 <0.05 <0.05 100 3 <0.05 <0.05 <0.05 100 5 <0.05 <0.05 <0.05 100 2 <0.05 <0.05 <0.05 100 17 <0.05 100 Phosphorus, Total mg/L 0.05c 27 <0.05 <0.001 0.144 52 27 <0.05 <0.001 0.07 52 26 <0.05 <0.001 0.1 50 17 0.0029 <0.001 0.004 24 97 <0.05 46 Phosphorus, Total Dissolved mg/L 0.05c 8 0.005 <0.001 0.005 13 6 0.0025 0.0018 0.0046 0 8 0.0017 <0.001 0.006 38 14 0.001 <0.001 0.004 43 36 0.002 28 Total Kjeldahl Nitrogen mg/L - 28 0.2 0.15 0.67 18 27 <0.2 <0.05 0.89 30 27 <0.2 <0.05 0.55 26 17 <0.2 <0.2 0.32 76 99 <0.2 33 Total Metals Aluminum (Al) mg/L 0.1d 28 0.49 0.098 3.45 0 30 0.27 <0.002 2.07 3 27 0.075 0.016 1.83 0 17 0.033 0.0068 0.17 0 102 0.20 1 Antimony (Sb) mg/L - 28 <0.0002 0.000075 <0.0002 68 30 <0.0002 0.000057 <0.0002 73 27 <0.0002 0.00005 <0.0002 67 16 0.000076 0.000048 0.00011 0 101 <0.0002 58 Arsenic (As) mg/L 0.005 12 0.0006105 0.00044 0.001 25 11 0.000801 0.0005 0.0013 27 12 0.0005355 0.000322 0.000953 25 16 0.00032 0.00023 0.000442 0 51 0.000554 18 Barium (Ba) mg/L 5 28 0.07 0.05 0.09 0 30 0.08 0.048 0.12 0 27 0.10 0.059 0.13 0 17 0.12 0.097 0.17 0 102 0.082 0 Beryllium (Be) mg/L 28 0.0005 <0.00001 <0.001 18 30 0.0005 <0.00001 <0.001 27 27 0.0005 <0.00001 <0.001 33 17 <0.00001 <0.00001 <0.001 82 102 0.0005 35 Bismuth (Bi) mg/L 28 <0.007 <0.00001 <0.007 96 30 <0.007 <0.00001 <0.007 97 27 <0.007 <0.00001 <0.007 96 16 <0.00001 <0.00001 <0.00001 100 101 <0.0001 97 Boron (B) mg/L 1.2 28 <0.02 0.006 0.034 68 27 <0.02 0.0086 <0.02 70 27 <0.02 0.006 0.037 63 17 0.012 0.0083 <0.02 6 99 <0.02 57 Cadmium (Cd) mg/L calculatede 9 0.000014 0.0000083 0.000037 0 8 0.0000083 <0.000006 0.000027 13 9 <0.000006 <0.000006 0.000037 67 16 0.000007 <0.000006 0.000012 31 42 0.0000083 29 Chlorine mg/L - 9 <0.3 <0.3 0.90 67 8 0.31 <0.3 1.12 50 9 0.53 <0.3 1.42 11 15 0.67 <0.3 3.71 20 41 0.51 34 Chromium VI (Cr6+) mg/L 0.001 28 <0.0008 <0.0003 0.0045 50 30 <0.0008 <0.0003 0.0031 50 27 <0.0008 <0.0003 0.0161 67 17 <0.0003 <0.0003 <0.0008 94 102 <0.0008 62 Cobalt (Co) mg/L 0.11 28 <0.0007 0.0000551 0.0014 54 30 <0.0007 0.0000145 <0.0007 73 27 <0.0007 <0.00001 0.0008 63 17 <0.0002 <0.00001 0.00019 35 102 <0.0007 59 Copper (Cu) mg/L calculatedf 25 0.001 0.00079 0.005 32 27 <0.001 0.00033 0.002 48 24 <0.001 0.00052 0.0023 42 16 0.00049 0.00035 0.00078 0 92 <0.001 34 Iron (Fe) mg/L 0.3 28 0.43 0.13 1.7 0 30 0.33 0.016 1.5 0 27 0.15 0.024 1.81 0 17 0.101 <0.004 0.25 6 102 0.24 1 Lead (Pb) mg/L calculatedg 19 0.00035 0.000094 0.003 26 23 <0.002 0.000022 <0.002 52 27 <0.002 0.0000082 0.002 52 17 0.000032 0.0000068 0.00022 6 86 0.00034 37 Lithium (Li) mg/L 0.87 28 0.003 <0.0002 0.0057 4 30 0.0039 0.002 0.0057 0 27 0.0039 <0.0002 0.006 7 16 0.0041 0.0031 0.0055 0 101 0.0038 3 Manganese (Mn) mg/L - 28 0.017 <0.003 0.048 14 30 0.019 <0.003 0.31 13 27 0.011 <0.003 0.082 15 17 0.013 0.0019 0.031 0 102 0.015 12 Mercury Trace (Hg)e ng/L 5 9 2.2 <1.2 7 33 8 <1.2 <1.2 <1.2 100 9 <1.2 <1.2 3.9 67 16 <1.2 <1.2 <1.2 100 42 <1.2 79 Molybdenum (Mo) mg/L 0.073 28 <0.001 0.00042 0.0013 39 30 <0.001 0.00037 0.003 43 27 0.001 0.0005 0.004 26 17 0.0012 0.0005 0.002 0 102 <0.001 30 Nickel (Ni) mg/L calculatedh 28 0.0011 <0.00006 0.005 18 30 <0.001 <0.00006 0.01 40 27 <0.001 <0.00006 0.004 59 17 <0.00006 <0.00006 <0.0002 94 102 <0.001 48 Selenium (Se) mg/L 0.001 12 0.00027 <0.0002 <0.0008 83 11 <0.0002 <0.0002 <0.0008 91 12 0.0002 <0.0002 <0.0008 83 16 0.00032 <0.0002 0.00048 31 51 <0.0003 69




Table 10 (Cont’d.)



n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Min Max Non-D n Med Non-D Silver (Ag) mg/L 0.0001 12 0.0000067 <0.000005 <0.0001 67 11 <0.000005 <0.000005 <0.0001 91 12 <0.000005 <0.000005 0.0001 67 17 <0.000005 <0.000005 <0.0001 94 52 <0.000005 81 Strontium (Sr) mg/L - 28 0.14 0.052 0.25 0 30 0.18 0.076 1.42 0 27 0.23 0.1 0.35 0 17 0.36 0.17 0.43 0 102 0.19 0 Sulphur (S) mg/L - 21 1.48 <0.6 3.8 5 28 1.94 <0.6 299 4 19 3.8 1.3 9.18 0 16 3.36 <0.6 19.3 6 84 2.29 4 Thallium (Tl) mg/L 0.0008 12 0.000013 <0.000003 <0.0001 33 11 0.0000087 <0.000003 <0.0001 36 12 0.0000046 <0.000003 <0.0001 33 17 0.0000038 <0.000003 <0.0001 41 52 0.0000065 37 Thorium mg/L - 9 0.0000944 <0.00003 0.00031 33 8 <0.00003 <0.00003 0.00030 63 9 <0.00003 <0.00003 0.00015 67 16 <0.00003 <0.00003 <0.00003 100 42 <0.00003 71 Tin (Sn) mg/L - 28 <0.003 <0.00007 0.004 86 30 <0.003 <0.00007 0.0029 97 27 <0.003 <0.00007 0.006 81 17 <0.00007 <0.00007 <0.0004 100 102 0.0016 90 Titanium (Ti) mg/L 0.100 28 0.0085 0.00023 0.086 14 30 <0.005 0.00096 0.0411 27 27 <0.005 0.0011 0.06 52 17 0.0021 0.00099 0.00829 0 102 <0.005 25 Uranium (U) mg/L 0.015 12 0.00026 <0.0001 0.00083 25 11 0.00039 <0.0001 0.00069 27 12 0.00048 <0.0001 0.00068 25 16 0.00068 0.00032 0.001 0 51 0.00048 18 Vanadium (V) mg/L - 28 <0.0001 0.00066 0.014 32 30 <0.0001 0.00023 0.004 53 27 <0.0001 0.0001 0.0051 52 17 0.00022 0.0001 0.0005 0 102 <0.0001 38 Zinc (Zn) mg/L 0.030 28 <0.003 <0.003 0.029 71 30 <0.003 <0.003 0.0079 70 27 <0.003 <0.003 0.0073 74 17 <0.003 <0.003 0.007 76 102 <0.003 73 Dissolved Metals Aluminum (Al) mg/L 0.1d 9 0.0373 <0.001 0.074 11 8 0.0057 0.0022 0.032 0 9 0.0016 0.0012 0.13 0 16 0.0011 <0.001 0.0039 31 42 0.0023 14 Antimony (Sb) mg/L - 9 0.000084 0.000074 0.00035 0 8 0.000089 0.000056 0.00011 0 9 0.000070 0.000050 0.00015 0 16 0.000076 0.000047 0.00011 0 42 0.000082 0 Arsenic (As) mg/L 0.005 9 0.00047 0.00035 0.075 0 8 0.00065 0.00048 0.00075 0 9 0.00043 0.00029 0.0005 0 16 0.00029 0.00021 0.00034 0 42 0.00036 0 Barium (Ba) mg/L 5 9 0.06 <0.0001 0.075 11 8 0.083 0.042 0.11 0 9 0.10 0.055 0.12 0 16 0.11 0.093 0.17 0 42 0.098 2 Beryllium (Be) mg/L 9 <0.00001 <0.00001 0.0000131 89 8 <0.00001 <0.00001 <0.00001 100 9 <0.00001 <0.00001 0.00005 89 16 <0.00001 <0.00001 0.00005 94 42 <0.00001 93 Bismuth (Bi) mg/L 9 <0.00001 <0.00001 0.0103 89 8 <0.00001 <0.00001 <0.00001 100 9 <0.00001 <0.00001 0.00005 89 16 <0.00001 <0.00001 0.00005 94 42 <0.00001 93 Boron (B) mg/L 1.2 9 0.0088 <0.0008 0.033 11 8 0.0099 0.0077 0.016 0 9 0.0084 0.0052 0.011 0 16 0.011 0.0074 0.014 0 42 0.0104 2 Cadmium (Cd) mg/L calculatede 9 <0.000006 <0.000006 0.00019 78 8 <0.000006 <0.000006 0.0000083 63 9 <0.000006 <0.000006 0.000015 89 16 0.0000061 <0.000006 0.000012 50 42 <0.000006 67 Chlorine mg/L - 9 <0.3 <0.3 0.56 78 8 0.30 <0.3 1.12 50 9 0.53 <0.3 1.33 11 16 0.71 <0.3 3.51 19 42 0.467 36 Chromium VI (Cr6+) mg/L 0.001 9 <0.0003 <0.0003 0.039 78 8 <0.0003 <0.0003 0.00084 88 9 <0.0003 <0.0003 0.00034 78 16 <0.0003 <0.0003 0.00036 94 42 <0.0003 86 Cobalt (Co) mg/L 0.11 9 0.00005 0.000024 0.000063 0 8 0.000019 <0.00001 0.000033 13 9 0.000011 <0.00001 0.000062 44 16 <0.00001 <0.00001 0.000019 56 42 0.000018 33 Copper (Cu) mg/L calculatedf 9 0.0014 0.00053 0.0028 0 8 0.00073 <0.0001 0.00090 13 9 0.00059 0.00051 0.00097 0 16 0.00047 0.00035 0.00065 0 42 0.00059 2 Iron (Fe) mg/L 0.3 9 0.073 <0.004 0.145 11 8 0.022 <0.004 0.15 38 9 0.02 <0.004 0.13 22 16 <0.004 <0.004 0.028 63 42 0.010 38 Lead (Pb) mg/L calculatedg 9 0.000036 0.000015 0.000070 0 8 0.000026 <0.000006 0.000102 25 9 0.0000089 <0.000006 0.000083 44 16 <0.000006 <0.000006 0.000020 63 42 0.00001 38 Lithium (Li) mg/L 0.87 9 0.0019 0.00095 0.0030 0 8 0.0038 0.0031 0.0050 0 9 0.0036 0.0019 0.0052 0 16 0.0039 0.0029 0.0055 0 42 0.0036 0 Manganese (Mn) mg/L - 9 0.0046 0.00085 0.0064 0 8 0.001 0.00040 0.0050 0 9 0.0051 0.0011 0.0083 0 16 0.0074 0.0015 0.022 0 42 0.0044 0 Molybdenum (Mo) mg/L 0.073 9 0.0006 0.0004 0.0012 0 8 0.00084 0.00036 0.0013 0 9 0.00086 0.00057 0.0033 0 16 0.0012 0.0006 0.0020 0 42 0.00086 0 Nickel (Ni) mg/L calculatedh 9 0.00039 <0.00006 0.00068 11 8 0.00018 <0.00006 0.0013 13 9 <0.00006 <0.00006 0.00052 78 16 <0.00006 <0.00006 0.000082 94 42 <0.00006 57 Selenium (Se) mg/L 0.001 9 <0.0002 <0.0002 <0.0003 100 8 <0.0002 <0.0002 <0.0003 100 9 <0.0002 <0.0002 0.000324 89 16 <0.0003 <0.0002 0.000453 56 42 <0.0003 81 Silver (Ag) mg/L 0.0001 9 <0.000005 <0.000005 <0.000005 100 8 <0.000005 <0.000005 <0.000005 100 9 <0.000005 <0.000005 <0.000005 100 16 <0.000005 <0.000005 <0.000005 100 42 <0.000005 100 Strontium (Sr) mg/L - 9 0.13 0.11 0.23 0 8 0.20 0.10 0.30 0 9 0.23 0.16 0.34 0 16 0.35 0.16 0.40 0 42 0.23 0 Sulphur (S) mg/L - 9 1.3 <0.6 2.6 22 8 1.7 <0.6 4.7 13 9 3.4 1.3 7.1 0 16 3.1 <0.6 18.6 13 42 2.3 12 Thallium (Tl) mg/L 0.0008 9 <0.000003 <0.000003 0.0000072 44 8 0.00000605 <0.000003 0.0000094 38 9 <0.000003 <0.000003 0.0000077 33 16 <0.000003 <0.000003 0.0000084 38 42 <0.000003 38 Thorium mg/L - 9 <0.00003 <0.00003 0.0000526 33 8 <0.00003 <0.00003 0.000029 100 9 <0.00003 <0.00003 0.0000453 78 16 <0.00003 <0.00003 <0.00003 100 42 <0.00003 81 Tin (Sn) mg/L - 9 <0.00007 <0.00007 <0.00007 100 8 <0.00007 <0.00007 <0.00007 100 9 <0.00007 <0.00007 <0.00007 100 16 <0.00007 <0.00007 <0.00007 100 42 <0.00007 100 Titanium (Ti) mg/L 0.100 9 0.0023 0.00084 0.0030 0 8 0.00095 0.00067 0.00153 0 9 0.00088 0.00070 0.0070 0 16 0.0011 0.00065 0.0080 0 42 0.0010 0 Uranium (U) mg/L 0.015 9 0.00024 0.00020 0.00034 0 8 0.00042 0.000081 0.00066 0 9 0.00049 0.00019 0.00063 0 16 0.00065 0.0003 0.001 0 42 0.00049 0 Vanadium (V) mg/L - 9 0.00037 0.0001 0.00040 0 8 0.0003 0.000211 0.00034 0 9 <0.0002 0.0001 0.00055 11 16 0.0001 0.0001 <0.0002 6 42 <0.0002 5 Zinc (Zn) mg/L 0.030 9 <0.003 <0.003 0.0035 78 8 <0.003 <0.003 0.0032 88 9 <0.003 <0.003 <0.003 100 16 <0.003 <0.003 0.0034 94 42 <0.003 90 Number of cases and percentage with concentrations below detection limits 1549 30 1528 34 1515 35 1450 35 6042 33




Table 11 Frequencies of guideline exceedance for watercourses in the Regional Study Area.


Guideline


GuidelinesAbove

GuidelinesAbove

GuidelinesAbove

Guidelines Above

Guidelinesn % n % n % n % n %

Ammonia-N mg/L 1.04a - - - - - - - - - - Chloride (Cl) mg/L 230b - - - - - - - - - - Dissolved Oxygen mg/L 5 - - - - - - - - - - Nitrate (as N) mg/L 13 - - - - - - - - - - Nitrite (as N) mg/L 0.06 - - - - - - - - - - pH pH 6.5-9.0 - - - - - - - - - - Phenols (4AAP) mg/L 0.004 - - 2 9 - - - - 2 2 Phosphorus, Total mg/L 0.05c 5 19 5 19 6 23 - - 16 16 Phosphorus, Total Dissolved mg/L 0.05c - - - - - - - - - -

Sulfate (SO4) mg/L 50 - - - - - - 1 6 1 1 Sulphide mg/L 0.002b 1 13 - - - - - - 1 3 Total Metals Aluminum (Al) mg/L 0.1d 27 96 23 77 8 30 1 6 59 58 Arsenic (As) mg/L 0.005 - - - - - - - - - - Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede - - 2 25 3 33 2 13 7 17 Chromium VI (Cr6+) mg/L 0.001 7 25 11 37 5 19 - - 23 23 Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 5 20 3 11 3 13 2 13 13 14 Iron (Fe) mg/L 0.3 19 68 16 53 6 22 - - 41 40 Lead (Pb) mg/L calculatedg 1 5 2 9 2 7 2 12 7 8 Lithium (Li) mg/L 0.87 - - - - - - - - - - Mercury Trace (Hg)e ng/L 5 1 11 - - - - - - 1 2 Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - - - - - - - - - Silver (Ag) mg/L 0.0001 - - - - - - - - - - Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 - - - - - - - - - - Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 - - - - - - - - - - Dissolved Metals - - - - - - - - - - Aluminum (Al) mg/L 0.1d - - - - 1 11 - - 1 2 Arsenic (As) mg/L 0.005 1 11 - - - - - - 1 2 Barium (Ba) mg/L 5 - - - - - - - - - - Boron (B) mg/L 1.2 - - - - - - - - - - Cadmium (Cd) mg/L calculatede 1 11 2 25 2 22 2 13 7 17 Chromium VI (Cr6+) mg/L 0.001 1 11 - - - - - - 1 2 Cobalt (Co) mg/L 0.11 - - - - - - - - - - Copper (Cu) mg/L calculatedf 1 11 2 25 2 22 2 13 7 17 Iron (Fe) mg/L 0.3 - - - - - - - - - - Lead (Pb) mg/L calculatedg - - 2 25 2 22 2 13 6 14 Lithium (Li) mg/L 0.87 - - - - - - - - - - Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - Nickel (Ni) mg/L calculatedh - - - - - - - - - - Selenium (Se) mg/L 0.001 - - - - - - - - - - Silver (Ag) mg/L 0.0001 - - - - - - - - - - Thallium (Tl) mg/L 0.0008 - - - - - - - - - - Titanium (Ti) mg/L 0.100 - - - - - - - - - - Uranium (U) mg/L 0.015 - - - - - - - - - - Zinc (Zn) mg/L 0.030 - - - - - - - - - - All water quality variables 70 8.5 70 8.7 40 4.9 30 3.7 250 7.7 Total and dissolved metals 64 7 63 7 34 4 13 1 174 5


3.3.1 Watercourses in Local Study Area Not Downstream of Existing Mines

In the Baseline Case dataset, surface water quality in the watercourses of the LSA that are not downstream of existing mines is characterized by concentrations of dissolved organic carbon concentrations that were measured to range from 2 to 17 mg/L and concentrations of TSS that were measured to range from below the detection limit for TSS to 263 mg/L with an annual median concentration that is also below detection limits (Table 6). Watercourses in the LSA are alkaline (pH from 7.5 to 8.5) and have TDS levels ranging from 64 to 320 mg/L. The ionic characteristics of these surface waters are dominated by bicarbonate, calcium, and sodium. Water is moderately hard to hard, and summer trophic status of watercourses in the LSA is oligotrophic, based on the trophic classification system of watercourses developed by Dodds (2006).

33% of the 4,760 combinations of measured water quality variables, seasons, and sampling locations of many surface water quality variables in the watercourses within the LSA that are not downstream of existing mines are below their applicable detection limits (Table 6). There is little seasonal variability in the frequency with which concentrations of water quality variables are below detection limits; the proportion ranged from 36% in winter to 28% in the spring.

Concentrations of 4.2% of all combinations of measured water quality variables with guidelines, seasons, and sampling locations are above guideline values (Table 7). Total aluminum, and total iron concentrations account for approximately 65% of all metal guideline exceedances, with lower frequencies of guideline exceedances for total copper, chromium, cadmium, dissolved iron, and dissolved aluminum (Table 7). Total phosphorus, phenols and sulphide account for most of the guideline exceedances for water quality variables that are not metals (Table 7). 15 of the 50 surface water quality variables in watercourses that are not downstream of existing mines were measured to have at least one guideline exceedance. The highest frequency of guideline exceedance occurred in the spring season and the lowest in the winter season (8.9% and 1.4%, respectively, Table 7). The frequency with which surface water quality guidelines for total and dissolved metals are exceeded is 2.7% of all measured cases.

3.3.2 Watercourses in Local Study Area Downstream of Existing Mines

Surface water quality of watercourses in the LSA downstream of existing mines is similar to water quality of watercourses that are not downstream of existing mines (Table 8). Surface waters are alkaline (pH ranging from 7.5 to 8.5) and have levels of total suspended solids ranging from a concentration that is below the detection limit of 3.0 mg/L to 544 mg/L, with an annual median of 4.5 mg/L. Watercourses in the LSA that are downstream of existing mines are also dominated by bicarbonate, calcium, and sodium, with concentrations of dissolved organic carbon that range from 2 to 14 mg/L. Watercourses in the LSA that are downstream of existing mines have a summer trophic status ranging from oligotrophic to mesotrophic, based on the trophic classification system of watercourses developed by Dodds (2006).


The frequency with which the concentration of surface water quality variables are below detection limits are similar in watercourses in the LSA that are downstream of existing mines (29% of 3,335 combinations of measured water quality variables, seasons, and sampling locations, Table 8) as compared to watercourses in the LSA that are not downstream of existing mines (33%, Table 6).

Concentrations of 6% of measured water quality variables with guidelines are above those guideline values in watercourses in the LSA that are downstream of existing mines (Table 9). Total aluminum, and total iron concentrations account for approximately 33% of all metal guideline exceedances, with lower frequencies of guideline exceedances for total copper, chromium, mercury, cadmium, silver, as well as dissolved copper (Table 9). Total phosphorus, phenols and sulphide account for all of the guideline exceedances for water quality variables that are not metals (Table 9). The highest and lowest frequencies of guideline exceedance occur in the spring season (12%) and winter season (0%), respectively (Table 9). 16 of the 50 surface water quality variables in watercourses that are downstream of existing mines were measured to have at least one guideline exceedance in the Baseline Case dataset (Table 9).

The frequency with which surface water quality guidelines for total and dissolved metals are exceeded is 4% of all measured cases in watercourses in the LSA that are downstream of existing mines (Table 9). Total aluminum, and total iron concentrations account for approximately 45% of all metal guideline exceedances, with lower frequencies of guideline exceedance for total copper, and total chromium (Table 9).

3.4 SURFACE WATER QUALITY BASELINE FOR THE REGIONAL STUDY AREA

Like the LSA, surface water quality in the RSA is also of generally good quality (Table 10). Dissolved organic carbon concentrations were measured to range from 2 to 12 mg/L. The concentration of TSS in the RSA was usually measured to be below 10 mg/L, but some high concentrations of TSS (approximately 200 mg/L) were observed in the fall season of 2009. Watercourses in the RSA are alkaline (pH from 7.6 to 8.8) and have concentrations of TDS that are similar to that in the LSA (20 mg/L to 322 mg/L). Water in the RSA is moderately hard to very hard. The summer trophic status of watercourses in the RSA is classified as oligotrophic to mesotrophic based on the trophic classification system of watercourses developed by Dodds (2006).

Concentrations of many surface water quality variables in the watercourses in RSA are below their applicable detection limits, with concentrations of 33% of the 6,042 combinations of measured water quality variables, seasons, and sampling locations being below detection limits in watercourses in the RSA (Table 10). The proportion of combinations of measured water quality variables, seasons, and sampling locations in the RSA that were measured to be below detection limits ranged from 30% in spring to 35% in winter and fall (Table 10).


Concentrations of 7.7% of measured water quality variables with guidelines are above those guideline values in watercourses in the RSA (Table 11). The highest and lowest frequencies of guideline exceedance occur in the summer season (8.7%) and winter season (3.7%), respectively (Table 11). 17 of the 50 surface water quality variables in watercourses that are downstream of existing mines were measured to have at least one guideline exceedance in the Baseline Case dataset (Table 9).

The frequency with which surface water quality guidelines for total and dissolved metals are exceeded is 5% of all measured cases in watercourses in the RSA (Table 11). Total aluminum, total iron, and total chromium concentrations account for 49% of all guideline exceedances in the Baseline Case in the RSA, with lower frequencies of guideline exceedance for total phosphorus, total and dissolved cadmium, total and dissolved copper, and dissolved lead (Table 11).

4.0 EFFECTS ASSESSMENT

This section presents the effects assessment of the Project for surface water quality. The assessment is organized as follows:

Assessment of the validity of the causal relationships linking Project activities to possible changes in surface water quality;

Specification of mitigation measures to be implemented to prevent or avoid potentially negative environmental consequences of Project activities; and

An analysis and classification of residual impacts after the application of mitigation measures.

Conservative assumptions are used throughout the impact assessment to ensure that residual impacts are not underestimated.

4.1 EFFECTS OF MINE CONSTRUCTION ACTIVITIES

4.1.1 Local Study Area – Application Case

4.1.1.1 Assessment of Validity of Impact Pathways

The construction phase of the Project will require the implementation of a number of activities in specific watersheds within the LSA, including:

tree clearing;

constructing access roads, diversions, and settling ponds;

area disturbances for borrow pits and waste and soil piles;

clearing and site disturbance; and

constructing drainage controls, cleanouts/retention areas and borrow pits.


The effects of these construction activities are assessed as being valid through the impact pathway of increased sediment loading to surface waters and associated changes in surface water quality.

4.1.1.2 Mitigation Measures to be Implemented

The Project will implement a number of well-established mitigation measures that will effectively prevent or reduce to acceptable levels the effects on surface water quality from Project activities in the construction phase. These recommendations are presented in detail in Section C of the Application and include:

Diversion of clean water around areas to be disturbed;

Minimization of the time interval between clearing/grubbing and subsequent earthworks, particularly at or in the vicinity of watercourses or in areas susceptible to erosion;

Installation of surface runoff collection and treatment systems to control groundwater seepage from road cuts and surface runoff from disturbed areas. Surface runoff will be directed to settling impoundments for removal of settleable solids;

Slope grading and stabilization techniques will be adopted. Slopes will be contoured to produce moderate slope angles to reduce erosion risk. Other stabilization techniques used to control erosion include: ditching above the cutslope to channel surface runoff away from the cutslope, leaving buffer (vegetation) strips between the construction site and a watercourse, placing large rock rip rap to stabilize slopes;

Temporary measures to control erosion before a vegetation cover is re-established, including: diversion ditches, drainage control, check dams, sediment ponds, sumps and mulches;

Progressive reclamation to reduce the amount of disturbed area at any given time. During reclamation, permanent plant cover and revegetation will be established. Soil erosion will be reduced by minimizing the time that reclaimed surfaces are left bare;

Whenever possible, construction activities in close proximity to watercourses will be carried out during periods of relatively low surface runoff in late fall, winter and early spring (from October to April). A 30 m buffer (vegetation) strip will be left between construction sites and watercourses except at stream crossings and diversions;

The design and construction of all stream crossings will be done in compliance with the Alberta Code of Practice for Watercourse Crossings and associated guidelines. This means that all stream crossings constructed by the Project will meet regulatory requirements for protection of fish resources and aquatic habitat; this will also effectively mitigate against effects on surface water quality; and

Where necessary, interim erosion/sediment control measures will be utilized until long-term protection can be effectively implemented.


4.1.1.3 Impact Analysis

It is expected that construction activities of the Project will have minor effects on surface water quality conditions in the LSA. A review of existing information regarding effects of construction activities on surface water quality is provided in MEMS 2005 (Section 3.1.1). The main conclusions of this review were that any sedimentation increases at affected sites were temporary and rapidly returned to levels similar to reference sites following completion of construction activities, with the rate of return depending upon the hydrologic regime of the watercourse (gradient and flow), and that surface water quality effects could be mitigated with strict application of operating conditions.

With strict implementation of the mitigation measures summarized above and described in detail in the Project Reclamation Plan (Section F of this Application) potential impacts of the construction phases are predicted to be insignificant for the following reasons:

Impacts from construction activities which have been identified as potentially adverse are mitigable using standard engineering and environmental design applications;

Short-term impacts on surface water quality during culvert crossing installation are inevitable. Those impacts are, however, temporary and localized;

Potential adverse effects associate with sedimentation will be localized, that is, will be confined to the immediate and downstream areas of the construction activities;

Potential effects on water quality associated with sediment input will be temporary, that is, they will occur mainly during the period of construction and until bank slopes are stabilized; and

Construction of haul roads, mine dewatering systems and overburden dumps will follow mining plans and schedules. These activities will be carried out sequentially, at intervals, before the development of new areas.

4.1.1.4 Residual Impact Classification

The residual (after mitigation) effects of the Project on surface water quality from construction activities of the Project are assessed as Insignificant in the LSA:

Geographic Extent – Local, within the LSA;

Duration – Short, and confined to the Construction Phase of the Project;

Frequency – the effect will be Isolated and confined to the Construction Phase of the Project;


Reversibility – the effect is assessed as Reversible, short-term because effects will diminish quickly once construction activities are complete;

Magnitude – Low, there will be changes in surface water quality as a result of construction activities. However, with the effective application of well-accepted and regulated mitigation measures, these changes are expected to be within established protective standards and to cause no detectable change in surface water quality beyond short-term, local effects;

Project Contribution – Negative, there will be some effect of Project construction activities on surface water quality;

Direction – the residual change in the surface water quality will be Negative; and

Probability of Occurrence – High.

4.1.2 Regional Study Area – Application Case

Because the potential effects of construction activities of the Project on surface water quality in the LSA are assessed as Insignificant for the Application Case, potential effects of construction activities of the Project on surface water quality in the RSA are also assessed as Insignificant for the Application Case.


Because the potential effects of construction activities of the Project on surface water quality in the LSA and RSA are assessed as Insignificant for the Application Case, potential effects of construction activities of the Project on surface water quality are also assessed as Insignificant for the Planned Development Case for both the LSA and RSA.

4.1.4 Level of Confidence and Uncertainties

The level of confidence in this assessment is High. The mitigation measures to be applied are well-accepted and there is good evidence from previous studies that the effective application of these mitigation measures in accordance with operating procedures will ensure any effects of construction activities on surface water quality will be localized and short-term.

4.2 EFFECTS OF USING NITROGEN-BASED EXPLOSIVES



Explosives containing ammonium nitrate (used as an oxidizer) will be used during some Project operations. The use of explosives is restricted to breakup of the overburden material to be removed by the dragline. Broken rock and unconsolidated material will be deposited in piles, or be used to backfill


previously mined areas. These rock piles and backfilled areas are potential sources of leaching of nitrates into surface waters. The leaching and runoff of residual nitrates from the rockpiles, via the impoundments, into receiving waters is assessed as a valid impact pathway.


Nitrogen release to the aquatic environment will be minimized through a number of mitigation measures already in use at existing coal mines in the area:

The use of explosives with less slurry to reduce the amount of nitrogen compounds released;

Minimization of water contact with explosives. Nitrogen compounds found in explosives are water soluble and water control activities (dewatering of pit areas, use of diversion ditches and interceptor ditches) will ensure the driest conditions possible for mining and blasting operations; and

Explosives will be properly stored to prevent contact with surface waters.


Several studies addressing elevated nitrogen levels in surface waters from mining activities were summarized in Hackbarth (1999) and MEMS (2005); the main findings reported in these documents are as follows:

While increased levels of nitrogen (nitrate) were noted in streams receiving discharges from settling ponds, these increases were inconsistent with data from the Erith, Pembina and Embarras Rivers downstream of the mines which indicated concentrations often at or below detection limits;

Studies conducted in the Lovett River by Alberta Environment and Water (AEW) found significantly higher concentrations of nitrogen in areas downstream of mining, although the elevated concentrations were less than surface water quality guidelines;

Release of nitrogen from explosives does not necessarily occur in the same year as the explosives were used but depends on factors such as hydrological cycle, form and intensity of precipitation, drainage exposure, aspect of waste dump, quantity of water and watershed characteristics; and

While nitrogen release increases rapidly with mining, the total quantity of nitrogen drops relatively quickly following the first freshet after blasting is completed and then continues to release over a period of five to ten years.


A review of nitrate and ammonia concentrations in surface waters used in this report (summarized in Table 6 to Table 9 and Appendix A2) found that:

most of the measured concentrations of ammonia were below the detection limit in both watercourses downstream of existing mines (100% of measured ammonia concentrations were below detection limits) and watercourses not downstream of existing mines (97% of measured ammonia concentrations were below detection limits);

many of the measured concentrations of nitrate were below the detection limit in both watercourses downstream of existing mines (80% of measured nitrate concentrations were below detection limits) and watercourses not downstream of existing mines (40% of measured nitrate concentrations were below detection limits); and

there was no significant difference in the concentration of nitrates in watercourses downstream of existing mines (n=5) compared with the concentration of nitrates in watercourses not downstream of existing mines (n=18, t-test, p = 0.25).


The residual (after mitigation) effects of the Project on surface water quality via increases in nitrogen caused by the use of explosives containing ammonium nitrate are assessed as Insignificant in the LSA:


Duration – Long, as release of nitrogen compounds from mine waste dumps have been documented to occur from five to ten years after the use of explosives;

Frequency – Periodic, as explosives will be used intermittently but repeatedly during the life of the Project;

Reversibility – the effect is assessed as Reversible, Long-term because effects have been documented as diminishing with time;

Magnitude – Low, as while increases in concentration of nitrogen compounds downstream of active mines has been documented in a number of cases, elevated concentrations have more often than not been below surface water quality guidelines;

Project Contribution – Negative, there will be some effect of use of nitrogen-based explosives on surface water quality;

Direction – the residual change in the surface water quality in the receiving watercourses will be Negative; and




Because the potential effects of using nitrogen-based explosives on surface water quality in the LSA are assessed as Insignificant for the Application Case, potential effects of the use of nitrogen-based explosives in the Project on surface water quality in the RSA are also assessed as Insignificant for the Application Case.


Because the potential effects of using nitrogen-based explosives on surface water quality in the LSA and RSA are assessed as Insignificant for the Application Case, potential effects of using nitrogen-based explosives on surface water quality are also assessed as Insignificant for the Planned Development Case for both the LSA and RSA.


The level of confidence in the assessments concerning the leaching of nitrates from mined areas is Moderate to High because the magnitude as well as spatial and temporal patterns of elevated nitrogen as a result of mining and use of nitrogen-based explosives are well-documented (Hackbarth 1999).

4.3 DISCHARGE FROM IMPOUNDMENTS TO NATURAL WATERCOURSES



The Project will potentially impact surface water quality in a number of pathways. Specific activities which can potentially influence the surface water quality include:

construction (i.e., soil stripping and logging, development of a dewatering system, and building haul roads and stream crossings);

normal mine operations (i.e., pit dewatering and surface runoff); and

reclamation (i.e., abandonment of open pit workings, surface and rock disposal area recontouring, and abandonment of roads and water management systems).

Each of these activities will potentially influence the natural drainage, infiltration, runoff, and soil erosion of the existing pre-disturbed Project area which can influence surface water quality. Because of the potential influence of the mining activities on the surface water quality, water collection and impoundment structures will be used to attenuate the impacts of the mining activities on the local water courses, including increased sediment loads and deposition of those sediments. The water from these impoundments will be released into local streams which will eventually merge with the larger systems; the RSA concerns the Pembina and Embarras Rivers.


The Project will have impoundments designed for storage and settlement of incidental water collecting in sumps, drained from mine pits, runoff from roads, and runoff from exposed, unvegetated areas. The water will be draining into the Embarras and Pembina Rivers following collection in the impoundments and discharge into smaller tributaries. This impact pathway is assessed to be valid.


Mine Operations Water from pit dewatering operations will be directed to settling impoundments for treatment prior to discharge of surface waters. In impoundments, pit water will mix with surface runoff. If necessary, flocculants will be used to enhance the rate of settlement of suspended solids. Impoundment discharges will be subject to conditions in the EPEA approval.

Impoundment Water All mine-affected water will be treated prior to its release in to the receiving waters to reduce potential effects from loading of suspended sediments and potential effects of water quality variables typically associated with suspended sediments (e.g., total aluminum and total iron). The mine wastewater treatment program similar to the one currently in use at the CVM will be established to minimize downstream siltation and minimize downstream effects on surface water quality.

Water Management System An adaptive management approach to water treatment has been used in the existing CVM and will be used for this Project as well. The water management system design and maintenance have been consistently improved using best available technology which has resulted in significant increases in waste water treatment efficiency.

Release of water pollutants from the site such as oil and grease is controlled. With the installation of oil booms on the impoundments and immediate containment of oil in the event of a spill, there is little danger of these materials contaminating surface waters. Components of the water handling system will be designed according to the governmental specification and the systems will be operated in accordance with regulatory approval requirements.

Selenium Elevated concentrations of selenium in surface waters is an important issue at western Canada coal mines and one that CVRI considers important in the design, operation and monitoring of its mining operations. Selenium is a naturally-occurring metalloid that is essential for metabolic function in vertebrates. However, if present in elevated concentrations can become toxic through bioaccumulation (Chapman 1999). The mining of coal can create large volumes of waste rock that when exposed to water and air, may accelerate the release of toxic forms of selenium into the environment (Wayland and Crosley 2006). No long term elevated concentrations of selenium have been identified at the CVM likely due to differing overburden material that is present. CVRI will continue effective water quality monitoring programs including a focus on selenium concentrations. The objective will be to observe water quality relative to baseline values to identify any changes over time. Should a significant increase in selenium levels be noted an investigation will be undertaken to identify possible sources and mitigation plans will be implemented.



Overview of Water Quality Model

The impact analysis uses an environmental effects monitoring framework to evaluate effects of potential point sources of pollution. Surface water quality upstream of impoundments is represented by the Baseline Case surface water quality conditions, impoundment discharges represent potential point sources of pollution, and surface water quality downstream of impoundments is determined by the use of a simple surface water quality model (Appendix A3).

A water quality model was developed and applied to simulate the effects of impoundment discharges into receiving waters for seven watercourses in the LSA. The model was developed from empirical data gathered as part of baseline conditions (Section 3 of this report and Surface Water Hydrology Report (CR# 6) (Matrix 2012)), as well as from data reported by the CVM in its annual approvals reports that summarize monitoring conducted on existing mines from 2001 to 2010. Appendix A3 contains a detailed description of the water quality model; a summary of the model is provided below:

Only surface water quality variables with water quality guidelines are simulated (Table 3, Table 4);

Surface water quality conditions are predicted for the following watercourses in the LSA (Figure 2):

o Bryan Creek at its confluence with the Embarras River;

o Hay Creek at its confluence with the Embarras River;

o Lendrum Creek at its confluence with Lund Creek;

o Halpenny Creek (including Bacon Creek) at its confluence with the Erith River;

o Lund Creek at its confluence with Lendrum Creek;

o Embarras River at its confluence with Mitchell Creek; and

o Erith River at its confluence with Lendrum Creek;

Surface water quality of natural watercourses is derived from Baseline Case conditions as described in Section 3 and Appendix A2 of this report;

Impoundment discharges to natural watercourses are derived from historical discharges measured in impoundments from existing mines in the Coal Valley area (Figure 1) from 2000 to 2010 as reported in annual approvals monitoring reports; and

Impoundment water quality is derived from water quality measurements taken in the period 1999 to 2010 as reported in annual approvals monitoring reports as well as results of additional sampling of existing impoundments during baseline field programs conducted from 2008 to 2011.


Conservative Assumptions Used in Impact Analysis

The model scenarios used as the basis of the impact analysis contain a number of conservative assumptions about the number of impoundments operating at any given time, water quality of impoundment discharges, streamflows in the receiving watercourses, and statistical power available for assessing impoundment effects.

First, the number of impoundments discharging to each of the watercourses considered in the model was set to the total number of impoundments scheduled to be operating in the drainage of each of the watercourses as described in the Surface Water Hydrology Report (CR# 6) (Matrix 2012). It is likely that fewer impoundments will be operating during certain stages of the Project, particularly in the startup, when not all impoundments will have been constructed, and final reclamation phases, when the oldest impoundments will have already been decommissioned. Because the total impoundment discharge is a function of the number of impoundments operating in a watershed drainage (Appendix A3), this assumption creates a level of impoundment discharge in the model that is likely greater than the discharge that would actually occur.

Second, the model is assessed for the mean May to October flow in each watercourse. The mean May to October flow is assumed to be constant for the entire analyses of each scenario and were assumed to be a constant hydrologic feature of the receiving watercourse. In reality, the particular precipitation and overall hydrologic conditions that would give rise to low flow periods in May to October would also mean very little, if any, impoundment discharge. Therefore, this conservative assumption assumes a greater contribution to final watercourse flow attributable to impoundments, as well as greater influence of the water quality of impoundment discharges that will actually occur.

Third, impact analysis results for the Application Case presented below are based on the generation of 10,000 different conditions, i.e., 10,000 different impoundment flows, impoundment water quality, and streamflow water quality. The use of 10,000 simulations of the water quality model provides great statistical power to the testing for effects, as this is analogous to having 10,000 replicates of water quality samples upstream and downstream of impoundments. However, an actual effects monitoring program will not have this level of statistical power because the Baseline Case datasets for these watercourses contain fewer than 100 measurements and the water management scheme and impoundments in each of the watersheds listed above will be in operation for far fewer than 10,000 years. Other analyses presented below are based on more realistic statistical power that will be available, with from six to 26 years of water quality sampling for the Application Case, depending on the specific watercourse and Project plan within the watershed of each watercourse.


Results of Water Quality Model – Local Study Area

Appendix A3 contains a detailed description of the model and simulation procedures used and detailed model results. A summary of the results of the model analysis for the LSA is presented in Table 12.

Using the set of conservative assumptions described above, a total of 314 (i.e., 98%) out of 322 cases (i.e., combinations of water quality variable (46) and LSA drainage (7)) have either: (i) a predicted concentration in the Application Case that is less than the concentration in the Baseline Case; or (ii) a predicted mean concentration in the Application Case that is less than the guideline value. Eight (i.e., slightly more than 2%) out of 322 cases have both: (i) a predicted concentration in the Application Case that is greater than the concentration in the Baseline Case; and (ii) a predicted mean concentration in the Application Case that is greater than the guideline value. All eight cases are total aluminum and total iron and occur in four watercourses: Bryan, Hay, Lendrum, and Lund creeks. For these eight cases:

the probability that an effects monitoring program will be able to detect statistically-significant increases in concentrations of total aluminum or total iron in these four watercourses is assessed at less than 1% (Table 12); and

the probability that an effects monitoring program will be able to detect statistically-significant increases in the frequency with which concentrations of these two water quality variables exceed their water quality guidelines during the operation of impoundments is assessed at less than 1% for total iron in all four watercourses and from 2% to 7% for total aluminum, depending on the watercourse (Table 12).

The surface water quality assessment for the Mercoal West/Yellowhead Tower Mine Extension Project (Hatfield 2008) indicates that in the Coal Valley area the relationships between TSS concentrations and concentrations of total aluminum and total iron are such that concentrations of both these water quality variables are essentially above their guideline values at low TSS levels (0 mg/L for total aluminum and 8 mg/L for total iron). These relationships suggest that it may be difficult to manage concentrations of water quality variables such as total aluminum and total iron in impoundments through the management of TSS levels.


The residual (after mitigation) effects of the Project on surface water quality via the operation of impoundments are assessed as Insignificant in the LSA:


Duration – Short, as the effects will occur in particularly seasons over the life of the Project, until the impoundments cease to operate;

Frequency – the effect will be Occasional throughout the life of the Project, as the impoundments will discharge at irregular intervals during the life of the Project;


Table 12 Predicted effect of impoundment discharge on surface water quality in Local Study Area.

Bryan Creek1

EmbarrasRiver2

Erith River3

HalpennyCreek4

Hay Creek5

Lendrum Creek6

Lund Creek7 Total

Drainage Area (km2) 23 164 93 32 9 55 115

Mean May to October flow (m3/s) 0.32 2.06 1.37 0.47 0.13 0.81 1.17

No. Impoundments 4 3 14 12 1 2 5

No. Years with Impoundments 14 14 14 26 6 17 15

No. Water Quality Variables Simulated 46 46 46 46 46 46 46 322

Screening Criterion: No. Water Quality Variables with:

• Concentration in Application Case predicted to be Greater than Concentration in Baseline Case; and

• Predicted Mean Concentration in Application Case Greater than Guideline Value

2 Al Fe

0 0 0 2 Al Fe

2 Al Fe

2 Al Fe

8

Total Aluminum • Probability that monitoring program will be able to

detect statistically-significant increase in mean concentration in Application Case compared to Baseline Case

• Probability that monitoring program will be able to detect statistically-significant increase in frequency of guideline exceedance in Application Case compared to Baseline Case

3%

<1% <1% <1%

7% 5% 2% 3%

Total Iron • Probability that monitoring program will be able to

detect statistically-significant increase in mean concentration in Application Case compared to Baseline Case

• Probability that monitoring program will be able to detect statistically-significant increase in frequency of guideline exceedance in Application Case compared to Baseline Case

<1%

<1% <1% <1%

<1% <1% <1% <1%

1 at confluence with Embarras River. 2 at confluence with Mitchell Creek. 3 at confluence with Lendrum Creek. 4 at confluence with the Embarras River. 5 at confluence with Erith River. 6 at confluence with Lund Creek. 7 at confluence with Lendrum Creek. Note: Al and Fe are total aluminum and total iron.


Reversibility – the effect is assessed as Reversible, short-term because effects will cease once the impoundments cease to operate;

Magnitude – Low, there will be changes in surface water quality with the Project. However, there are expected to be relatively few instances of detectable increases in the concentration of water quality variables as a result of impoundment discharges and even fewer instances of detectable increases in concentration coupled with concentrations being above surface water quality guidelines;

Project Contribution – Negative, there will be some effect of the operation of Project impoundments on surface water quality;





Surface water quality conditions are predicted for the following watercourses in the RSA (Figure 2):

Embarras River at its confluence with the Erith River; and

Erith River at its confluence with the Embarras River.

A summary of the results of the model analysis for the RSA is presented in Table 13.

Using the set of conservative assumptions described above, a total of 88 (i.e., 96%) out of 92 cases (i.e., combinations of water quality variable (46) and RSA drainage (2)) have either: (i) a predicted concentration in the Application Case that is less than the concentration in the Baseline Case; or (ii) a predicted mean concentration in the Application Case that is less than the guideline value (Table 13). Four (i.e., 4%) out of 92 cases have both: (i) a predicted concentration in the Application Case that is greater than the concentration in the Baseline Case; and (ii) a predicted mean concentration in the Application Case that is greater than the guideline value. All four cases are total aluminum and total iron. For these four cases:

the probability that an effects monitoring program will be able to detect statistically-significant increases in concentrations of total aluminum or total iron in the Embarras River at its confluence with the Erith River and the Erith River at its confluence with the Embarras River is assessed at less than 1% (Table 13); and


the probability that an effects monitoring program will be able to detect statistically-significant increases in the frequency with which concentrations of these two water quality variables exceed their water quality guidelines during the operation of impoundments is assessed at less than 1% for total iron for both watercourses and from 2% to 5% for total aluminum, depending on the watercourse (Table 13).

Table 13 Predicted effect of impoundment discharge on surface water quality in Regional Study Area.

Embarras River2

Erith River3 Total

Drainage Area (km2) 707 925 Mean May to October flow (m3/s) 5.91 9.94 No. Impoundments 3 33 No. Years with Impoundments 14 26 No. Water Quality Variables Simulated 46 46 92 Screening Criterion: No. Water Quality Variables with: Concentration in Application Case predicted to be

Greater than Concentration in Baseline Case; and Predicted Mean Concentration in Application Case

Greater than Guideline Value

2 Al Fe

2 Al Fe

4

Total Aluminum Probability that monitoring program will be able to detect

statistically-significant increase in mean concentration in Application Case compared to Baseline Case

Probability that monitoring program will be able to detect statistically-significant increase in frequency of guideline exceedance in Application Case compared to Baseline Case

<1% <1%

2% 5%

Total Iron Probability that monitoring program will be able to detect

statistically-significant increase in mean concentration in Application Case compared to Baseline Case

Probability that monitoring program will be able to detect statistically-significant increase in frequency of guideline exceedance in Application Case compared to Baseline Case

<1% <1%

<1% <1%

1 at confluence with Erith River. 2 at confluence with Embarras River. Note: Al and Fe are total aluminum and total iron.


The residual (after mitigation) effects of the Project on surface water quality via the operation of impoundments are assessed as Insignificant in the RSA:

Geographic Extent – Regional, within the RSA;

Duration – Short, as the effects will occur in particularly seasons over the life of the Project, until the impoundments cease to operate;

Frequency – the effect will be Occasional throughout the life of the Project, as the impoundments will discharge at irregular intervals during the life of the Project;


Reversibility – the effect is assessed as Reversible, short-term because effects will cease once the impoundments cease to operate;

Magnitude – Low, there will be changes in surface water quality with the Project. However, there are expected to be relatively few instances of detectable increases in the concentration of water quality variables as a result of impoundment discharges and even fewer instances detectable increases in concentration coupled with concentrations being above surface water quality guidelines;

Project Contribution – Negative, there will be some effect of the operation of Project impoundments on surface water quality;




Because the potential effects of impoundments on surface water quality in the LSA and RSA are assessed as Insignificant for the Application Case, potential effects of impoundments on surface water quality are also assessed as Insignificant for the Planned Development Case for both the LSA and RSA.


The level of confidence in this assessment of residual effects is High. First, there is a good historical data record of impoundment operation and data from the existing CVM; this means the impoundment flows and water quality of those flows are well-understood. Second, the assessment was conducted using conservative estimates of flows in receiving watercourses.

Key uncertainties in the assessment are as follows:

Differences may exist in geological and soil conditions between the existing CVM from which impoundment water quality data were used and the Project area and these differences may influence surface water quality. However, any differences would need to be substantial to considerably influence the impact analysis results in Table 12, and no major differences in geological and soil conditions are expected from current conditions at the CVM; and

The frequency and volumes of impoundment discharge in the Project may be different than in impoundments from existing mines. The impact analysis results (Table 12) with either smaller watersheds or greater numbers of impoundments suggest that impoundment flow is a more important determinant of water quality in the receiving watercourse than impoundment water quality.


4.4 EFFECT OF END-PIT LAKE CHARACTERISTICS ON WATER QUALITY

4.4.1 Assessment of Validity of Impact Pathways

Analyses presented in End-Pit Lake Working Group (2004) suggest that the design, construction, and management of end-pit lakes influence their viability. Twelve end-pit lakes/ponds will be constructed as part of the reclamation landscape for the Project (Table 14). The influences of the characteristics of these end-pit lakes on the surface water quality of those lakes are therefore assessed as valid impact pathways.

4.4.2 Impact Analysis

The information used in this impact analysis is derived from three sets of studies conducted on CVM end-pit lakes:

the studies in the 1990s conducted on Lovett, Silkstone, and Stirling (Pit 24) lakes (Agbeti 1998, Mackay 1999);

the 2006 studies conducted on Lovett, Silkstone, and Stirling (Pit 24) lakes plus Pit 35 and Pit 45 lakes (Hatfield 2008); and

a detailed study of surface water quality conditions in existing CVM end-pit lakes prepared by Hatfield (2011, Appendix 8 of this Application), in which detailed water quality sampling was conducted in summer, fall, and winter 2010 and spring 2011 in nine existing end-pit lakes and one natural lake. Summary information on the lakes in the study described in Hatfield (2011) is provided in Table 15.

Taken together, the results of these studies indicate that there may be fewer constraints of water quality to the ecological viability of end-pit lakes in the Coal Valley area than those described in End-Pit Lake Working Group (2004):

1. The concentration of a number of water quality variables, such as nutrients and major ions, are higher in end-pit lakes than in natural lakes, but these higher concentrations are not at levels that would affect the ecological viability of the end-pit lakes (Table 16, for results of 2010/2011 studies).

2. There have been relatively few instances of measured water quality variables, including metals, exceeding provincial or federal water quality guidelines (Table 16, for results of 2010/2011 studies).

3. The incidence of water quality guideline exceedance is not measurably greater in end-pit lakes than in natural lakes in the Coal Valley area (Table 16, for results of 2010/2011 studies).

4. The trophic status of end-pit lakes is similar to that of natural lakes in the Coal Valley area.


Table 14 Characteristics of end-pit lakes/ponds in the Project reclamation landscape.

End-Pit Lake Watershed

Surface Area (ha)

Maximum Depth

(m)

Littoral Zone1 Flow Regime Total Drainage

Area (km²) Filling Time*

(years) Area(ha)

Ratio(%) On stream Off Stream

1

Embarras River

Bryan Creek 67.4 75 8.9 13.2 X 1.7 75.9

2 Bryan Creek 93.0 70 17.6 18.9 X 25.5 4.9

3 Hay Creek 60.3 90 8.3 13.8 X 2.1 59.0

4

Erith River

Erith River 79.2 40 25.7 32.4 X 70.8 0.6

5 Erith River 131.8 55 34.8 26.4 X 75.4 1.8

6 Halpenny Creek 28.9 40 5.5 18.9 X 25.1 0.8

7 Lendrum Creek 34.4 30 14.6 42.3 X 24.2 0.5

8 Lund Creek 20.1 40 6.0 29.6 X 10.7 1.0

9 Lund Creek 21.0 35 4.4 20.9 X 9.1 1.4

10 Lund Creek 5.5 20 2.3 41.6 X 7.3 0.3

11 Lund Creek 17.7 35 4.3 24.2 X 6.7 2.0

12 Lund Creek 96.0 55 18.3 19.1 X 14.7 7.8

From Surface Water Hydrology Report (Matrix 2012). 1 < 3 m depth


Table 15 Summary information on lakes sampled in end-pit lake study of Hatfield (2011).

Lake Year

Created (Age)

Type Location Approximate Surface Area

(ha)

MaximumDepth (m)

Mean Depth

(m) Inflow Outflow Water

Sampling Monitoring

History

End-Pit Lakes

Lovett Lake 1985 (26) Dragline 10-47-19-W5M 6.0 18 5.5 √* Ions 1987, 1989, 1991,

1993, 1998, 2006

Silkstone Lake 1986 (25) Dragline 9-47-19-W5M 6.4 14.8 4.7 √ √ Full, Ions 1987, 1989, 1991,

1993, 1998, 2006

Pit 24 (Stirling)

1993 (18) Truck and shovel 4-47-19-W5M 4.9 23.5 8.1 Full, Ions 1998, 2006

Pit 35 1999 (12) Dragline 26-46-19-W5M 3.5 11.4 5.7 √ Ions 2006

Pit 45 1999 (12) Dragline 26-46-19-W5M 6.5 12.5 6.3 √ √ Ions 2006

Pit 44 1998 (13) Dragline 35-46-19-W5M 8.76 18.5 7.4 √ √ Full, Ions Not monitored prior to 2010

Pit 142 2005 (6) Dragline 24-47-21-W5M 7.24 7.4 2.2 √ √ Ions Not monitored prior to 2010

Pit 25E 1996 (15) Dragline 27-46-19-W5M 6.8 16.2 7.4 √ √ Full, Ions Not monitored prior to 2010

Pit 25S 1999 (12) Dragline 33-46-19-W5M 6.8 12.5 4.7 √ √ Ions Not monitored prior to 2010

Natural Lakes

Fairfax Lake Natural Natural 17-46-18-W5M 28.4 7.6 3.2 √ Full, Ions 1998, 2006

Full = full suite of water quality variables. Ions = only major ions: bicarbonate, calcium, carbonate, chloride, magnesium, potassium, sodium, sulphate, sulphide. * Outflow is through a subsurface connection to Lovett River.


The exception to this is dissolved oxygen. The results of this study indicate there are portions of end-pit lakes in all seasons sampled with concentrations of dissolved oxygen that are below provincial guidelines for the protection of aquatic life (Figure 3). The same is true of Fairfax Lake, the natural lake that was surveyed as part of this study (Figure 3). The depth patterns of dissolved oxygen in the lakes that were studied (Figure 3) are related to processes of lake stratification and turnover.

4.4.2.1 Patterns of Lake Stratification and Turnover in Lakes in the CVM Area

Patterns of lake stratification and turnover are inconsistent among the end-pit lakes in the Coal Valley area. Early studies (Agbeti 1998, Mackay 1999) suggested that Lovett Lake and Pit 24 (Stirling) Lake stratified in the summer and experienced either complete mixing or weak stratification at greater depths in the fall. Hatfield (2008) found that Lovett Lake and Pit 24 exhibited thermoclines, oxyclines and chemoclines throughout the summer and fall and suggested they did not experience fall turnover. In addition, Hatfield (2008) suggested that Silkstone and Pit 45 lakes did not experience fall turnover, and the results of Hatfield (2011) indicate Silkstone, Lovett and Pit 45, and Pit 24 lakes were stratified with at best incomplete turnover. All studies found that Fairfax Lake experienced fall turnover.

Importance of Salinity of Water Inflows to End-Pit Lakes

Figure 4 indicates that the end-pit lakes in the Coal Valley area receive water from both surface water and groundwater sources. The results of the Hatfield (2008) and Hatfield (2011) studies identify the presence of higher salinity groundwater as a contributing factor as to whether an end-pit lake will become meromictic. Inflow of higher salinity groundwater coupled with inflow of lower salinity surface water sets up the conditions for a chemocline to form, increasing the probability that a lake will not turn over but will instead remain stratified.

While the Hatfield (2011) study indicated partial turnover occurred in some of the end-pit lakes, only the lakes that had no chemocline turned over in fall 2010 (Fairfax, Pit 35, Pit 142, and Pit 25S lakes). The other six lakes that were studied, Pit 25E, Lovett, Silkstone, Pit 24 (Stirling), Pit 44, and Pit 45 lakes, had a definite chemocline during much of the sampling period in 2010 and either remained stratified or had only incomplete or partial turnover.

Importance of Lake Depth

The results of Hatfield (2011) indicate that shallow end-pit lakes have a greater likelihood of being holomictic. Pit 35, Pit 142, Pit 25S and Fairfax lakes were holomictic in 2010 and these four lakes have four of the five shallowest mean depths and the four shallowest maximum depths of any of the lakes sampled in this study (Table 15).


Table 16 Water quality of end-pit lakes and Fairfax Lake sampled in 2010 and 2011.


Detection Limit

Pit 24 Pit 25E Pit 44 Silkstone Fairfax Pit 24 (Hypo)

Pit 24 (Epi)

Pit 25E (Hypo)

Pit 25E (Epi)

Pit 44 (Hypo)

Pit 44 (Epi)

Silkstone (Hypo)

Silkstone (Epi) Fairfax Pit 24

(Epi) Pit 24 (Hypo) Pit 25E Fairfax

July 2010 October 2010 February 2011

Physical Variables, Nutrients, Ions and Organics/Hydrocarbons Alkalinity, Total (as CaCO3) mg/L 5 241 430 304 539 71.9 253 187 431 226 301 210 521 275 70.7 208 312 463 81.6 Ammonia-N mg/L 1.37A 0.05 <0.05 0.15 0.132 0.474 <0.05 <0.05 <0.05 0.101 <0.05 0.159 <0.05 0.248 <0.05 <0.05 <0.05 0.851 0.136 0.091 Bicarbonate (HCO3) mg/L 5 272 524 371 657 87.7 292 214 500 256 356 239 599 305 86.3 251 380 565 99.5 Biochemical Oxygen Demand mg/L 2 <2 <2 <2 <2 <2 - - - - - - - - <2 2.7 7.9 <2 2.2 Calcium, Dissolved mg/L 0.5 28.3 109 75.2 58.8 18.9 29.3 19.4 106 53.3 77.1 30.5 56.2 32.3 16.9 22.2 33.2 107 18.7 Carbonate (CO3) mg/L 5 11 <5 <5 <5 <5 8.6 7 12.7 9.7 5.2 8.4 18.4 14.6 <5 <5 <5 <5 <5 Chloride (Cl) mg/L 0.5 <0.5 <0.5 <0.5 0.99 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1.87 0.62 <0.5 <0.5 <0.5 <0.5 <0.5 Color, True T.C.U. 2 19 7 4 9 12 3 3 5.0 13 <2 <2 8 9 10 5 8 8 19 Conductivity (EC) µS/cm 0.2 560 1590 804 1150 144 573 446 1550 692 803 555 1090 579 143 467 637 1590 151 Dissolved Organic Carbon mg/L 1 3.8 2.8 1.9 3.7 7.5 2.9 4.9 1.6 1.8 3.6 4.8 7.9 3.7 3.5 3.6 8.2 Hardness (as CaCO3) mg/L 118 417 240 216 61.1 120 86 403 205 246 108 207 127 55.8 95.9 131 406 60.9 Hydrocarbons, Recoverable (I.R.) mg/L 1 <1 <1 <1 <1 <1 - - - - - - - - <1 <1 <1 <1 <1 Hydroxide (OH) mg/L 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 Magnesium (Mg)-Dissolved mg/L 0.1 11.4 35.1 12.6 16.9 3.38 11.4 9.13 33.5 17.4 12.9 7.66 16.3 11.3 3.3 9.82 11.8 33.8 3.45 Naphthenic Acids mg/L 1 <1 <1 <1 <1 <1 - - - - - - - - <1.0 <1.0 <1.0 <1.0 <1.0 Nitrate (as N) mg/L 13B 0.05 <0.05 0.132 <0.05 <0.05 <0.05 <0.05 <0.05 0.124 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.066 <0.050 Nitrate and Nitrite as N mg/L 0.071 <0.071 0.132 <0.071 <0.071 <0.071 <0.071 <0.071 0.124 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 Nitrite (as N) mg/L 0.06B 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.050 pH pH 6.5-9C 0.1 8.45 7.87 7.88 7.92 7.74 8.52 8.55 8.41 8.53 8.35 8.54 8.47 8.61 8.15 8.32 8.09 8.00 8.01 Phenols (4AAP) mg/L 0.004 0.001 0.0041 <0.001 0.0046 0.0087 0.0023 - - - - - - - - 0.0037 0.0016 0.0035 <0.0010 0.0026 Phosphorus, Total mg/L 0.05D 0.001 0.0147 0.0206 0.0035 0.164 0.0157 0.0129 0.0073 0.0144 0.0057 0.003 0.011 0.0688 0.0094 0.0145 0.0109 0.279 0.0053 0.0091 Phosphorus, Total Dissolved mg/L 0.001 0.004 0.0024 <0.001 0.0964 0.0094 0.0059 0.0013 0.0033 <0.001 <0.001 0.0125 0.0426 0.0017 0.0033 0.0079 0.237 0.0023 0.009 Potassium, Dissolved mg/L 0.5 2.94 5.6 3.61 3.16 0.76 2.67 2.4 4.99 2.11 3.56 2.98 2.99 2.07 0.77 2.91 3.2 5.42 0.92 Sodium, Dissolved mg/L 1 77.9 227 88.6 189 6.4 76.8 60.5 204 70.1 85.9 75.4 179 77.7 6.3 69.6 91.9 214 6.6 Sulfate (SO4) mg/L 0.5 57 434 125 101 1.19 55.7 47.2 421 137 130 78.2 96.6 43 1.11 53.8 47.6 445 1.07 Sulphide mg/L 0.002 <0.002 <0.002 <0.002 0.121 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.207 <0.002 <0.002 Total Dissolved Solids mg/L 5 336 1110 512 747 99 347 266 1130 451 541 336 734 353 85 281 397 1140 100 Total Kjeldahl Nitrogen mg/L 0.2 0.34 0.34 0.22 0.91 0.81 0.23 0.23 0.31 0.22 0.25 <0.2 0.56 0.3 0.41 0.34 1.28 0.33 0.47 Total Organic Carbon mg/L 1 3.6 2.9 1.9 4.3 7.8 3 4.9 1.6 2 3.7 4.9 8.7 4.2 4.4 3.8 8.2 Total Suspended Solids mg/L 3 5 <3 <3 <3 7 <3 <3 <3 <3 <3 <3 5 <3 <3 <3 3 <3 <3

Bold Below detection limit. XXX Guideline exceedance. * Metals were not analyzed in October. 1 Guidelines are Alberta Environment (1999) unless otherwise specified. A at pH 8.0, 10°C (CCME 2007). B CCME guideline for nitrate is 13 mg/L; CCME guideline for nitrite is 0.060 mg/L. C CCME (2007). AENV (1999) guideline: "To be in the range of 6.5 to 8.5 but not altered by more than 0.5 pH units from background”. D Guideline is for chronic total (inorganic and organic) phosphorus. E at pH>=6.5; [Ca2+]>=4 mg/L; DOC>=2 mg/L (CCME 2007). F Is equal to 10(0.86*LOG(Hardness)-3.2) (CCME 2007). G Guideline for chromium III is 0.0089 mg/L; guideline for chromium VI is 0.0010 mg/L (CCME 2007). Most stringent guideline (0.0010 mg/L) is used. H Guideline is hardness-dependent: 0.002 mg/L at hardness = 0 to 120 mg/L; 0.003 mg/L at hardness = 120 to 180 mg/L; 0.004 mg/L at hardness > 180 mg/L (CCME 2007). I Guideline is hardness-dependent: 0.001 mg/L at hardness = 0 to 60 mg/L; 0.002 mg/L at hardness = 60 to 120 mg/L; 0.004 mg/L at hardness > 120 mg/L (CCME 2007). J Chronic guideline (AENV 1999). K Guideline is hardness-dependent: 0.025 mg/L at hardness = 0 to 60 mg/L; 0.065 mg/L at hardness = 60 to 120 mg/L; 0.11 mg/L at hardness = 120 to 180 mg/L; 0.15 mg/L at hardness > 180 mg/L (CCME 2007).






Guideline Detection

Limit Pit 24 Pit 25E Pit 44 Silkstone Fairfax Pit 24

(Hypo) Pit 24 (Epi)

Pit 25E (Hypo)

Pit 25E (Epi)

Pit 44 (Hypo)

Pit 44 (Epi)

Silkstone (Hypo)




Dissolved Metals Aluminum mg/L 0.1E 0.001 0.000718 0.000813 0.00027 0.000898 0.000247 * * * * * * * * * 0.00352 0.00217 0.000556 0.000415 Antimony mg/L 0.000001 0.0000855 0.000166 0.00014 0.0000918 0.0000279 * * * * * * * * * 0.0000844 0.0000926 0.00014 0.0000252 Arsenic mg/L 0.005 0.00004 0.00101 0.000304 0.000393 0.00498 0.000413 * * * * * * * * * 0.00082 0.00124 0.000295 0.000349 Barium mg/L 0.0001 0.0914 0.0796 0.0813 0.195 0.0479 * * * * * * * * * 0.0729 0.126 0.0745 0.0411 Beryllium mg/L 0.00001 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 * * * * * * * * * 0.0000035 <0.000003 0.0000118 0.0000065 Bismuth mg/L 0.00001 <0.000001 <0.000001 <0.000001 <0.000001 0.0000111 * * * * * * * * * <0.000001 <0.000001 <0.000001 <0.000001 Boron mg/L 0.0008 0.0241 0.0463 0.0514 0.0584 0.00529 * * * * * * * * * 0.0224 0.0298 0.0498 0.00682 Cadmium mg/L F 0.000006 0.0000021 0.0000303 0.000025 0.0000035 0.0000028 * * * * * * * * * 0.0000026 <0.000002 0.0000319 <0.000002 Calcium mg/L 0.1 23.9 107 70.3 48.6 18.8 * * * * * * * * * 21.3 30.1 104 18.5 Chlorine mg/L 0.5 0.3 <0.1 0.25 0.186 0.704 0.148 * * * * * * * * * <0.1 0.153 0.303 0.206 Chromium mg/L 0.001G 0.0003 0.0000742 0.0000307 0.000112 0.000132 <0.00003 * * * * * * * * * 0.0000653 0.0000487 <0.00003 <0.00003 Cobalt mg/L 0.00001 0.0000206 0.000126 0.0000977 0.000732 0.0000184 * * * * * * * * * 0.0000157 0.000145 0.00076 0.0000101 Copper mg/L 0.002H 0.0001 0.000233 0.000633 0.000376 0.000256 0.0000903 * * * * * * * * * 0.000392 0.000223 0.000695 0.000115 Iron mg/L 0.3 0.004 <0.002 <0.002 <0.002 0.0179 0.0592 * * * * * * * * * <0.002 0.0219 <0.002 0.0419 Lead mg/L 0.001I 0.00001 <0.000001 <0.000001 <0.000001 0.000003 <0.000001 * * * * * * * * * 0.0000019 0.0000077 0.0000101 0.0000028 Lithium mg/L 0.0002 0.00539 0.0298 0.0297 0.0188 0.00198 * * * * * * * * * 0.00551 0.00824 0.0425 0.00405 Manganese mg/L 0.00003 0.000341 0.161 0.178 1.68 0.373 * * * * * * * * * 0.000233 1.23 0.638 0.00106 Mercury mg/L 0.013J, 0.005 0.00005 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 * * * * * * * * * <0.00001 0.0000206 <0.00001 <0.00001 Molybdenum mg/L 0.073 0.000008 0.00165 0.00275 0.0107 0.00188 0.000413 * * * * * * * * * 0.00192 0.000502 0.00272 0.000355 Nickel mg/L 0.025K 0.00006 0.000319 0.00246 0.00339 0.00149 <0.000005 * * * * * * * * * 0.000289 0.000223 0.00407 <0.000005 Selenium mg/L 0.001 0.0003 0.000252 0.000661 0.000635 0.000233 <0.0001 * * * * * * * * * 0.000237 0.000129 0.000583 <0.0001 Silver mg/L 0.0001 0.000005 <0.0000005 0.0000065 0.0000008 0.0000026 <0.0000005 * * * * * * * * * 0.0000006 <0.0000005 <0.0000005 <0.0000005Strontium mg/L 0.000008 0.501 1.96 1.43 1.43 0.12 * * * * * * * * * 0.415 0.582 1.93 0.123 Sulphur mg/L 0.6 19.6 190 53.6 41.7 0.476 * * * * * * * * * 17.4 17.2 150 0.354 Thallium mg/L 0.0008 0.000003 0.0000022 0.0000104 0.000004 <0.0000003 0.0000121 * * * * * * * * * 0.0000026 0.0000007 0.0000151 <0.0000003Thorium mg/L 0.00003 0.0000025 0.0000037 0.0000021 0.0000026 0.0000218 * * * * * * * * * 0.0000022 0.0000027 0.0000027 <0.0000003Tin mg/L 0.00007 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 * * * * * * * * * <0.00003 <0.00003 <0.00003 <0.00003 Titanium mg/L 0.00007 0.000292 0.000673 0.000353 0.00173 0.000313 * * * * * * * * * 0.000119 0.00125 0.00054 0.000236 Uranium mg/L 0.000003 0.0012 0.00518 0.00191 0.00107 0.0000327 * * * * * * * * * 0.00116 0.00106 0.00557 0.00004 Vanadium mg/L 0.00005 0.000205 0.000133 0.0000543 0.000628 0.0000282 * * * * * * * * * 0.000211 0.000361 0.0000671 0.000007 Zinc mg/L 0.03 0.0002 0.00021 0.00189 0.00353 0.00127 0.00144 * * * * * * * * * 0.00227 0.000804 0.00212 0.000644







Guideline Detection

Limit Pit 24 Pit 25E Pit 44 Silkstone Fairfax Pit 24

(Hypo) Pit 24 (Epi)

Pit 25E (Hypo)

Pit 25E (Epi)

Pit 44 (Hypo)

Pit 44 (Epi)

Silkstone (Hypo)




Total Metals * * * * * * * * * Aluminum mg/L 0.1E 0.002 0.0137 0.0371 0.0887 0.0223 0.00288 * * * * * * * * * 0.00784 0.0104 0.0119 0.00369 Antimony mg/L 0.000001 0.0000864 0.000168 0.000141 0.0000927 0.0000282 * * * * * * * * * 0.0000853 0.0000935 0.000141 0.0000255 Arsenic mg/L 0.005 0.00004 0.00102 0.000317 0.00046 0.00515 0.000479 * * * * * * * * * 0.000887 0.00133 0.000366 0.000389 Barium mg/L 0.0001 0.101 0.0837 0.0853 0.226 0.055 * * * * * * * * * 0.0776 0.137 0.0788 0.0445 Beryllium mg/L 0.00001 <0.000003 0.0000064 <0.000003 0.0000061 <0.000003 * * * * * * * * * 0.0000059 0.0000037 0.0000136 0.0000066 Bismuth mg/L 0.00001 <0.000001 <0.000001 <0.000001 <0.000001 0.0000112 * * * * * * * * * <0.000001 <0.000001 <0.000001 <0.000001 Boron mg/L 0.0008 0.0268 0.0481 0.055 0.0616 0.00561 * * * * * * * * * 0.0252 0.0317 0.0519 0.0125 Cadmium mg/L F 0.000006 0.0000055 0.0000351 0.0000278 0.0000091 0.0000033 * * * * * * * * * 0.0000038 0.0000025 0.0000353 <0.000002 Calcium mg/L 0.1 25 110 73.4 50.4 19.8 * * * * * * * * * 22.3 32.2 108 19.4 Chlorine mg/L 0.5 0.3 <0.1 0.284 0.218 0.755 0.149 * * * * * * * * * <0.1 0.155 0.32 0.208 Chromium mg/L 0.001G 0.0003 0.0000749 0.000031 0.000113 0.000133 0.0000365 * * * * * * * * * 0.0000656 0.0000492 <0.00003 <0.00003 Cobalt mg/L 0.00001 0.0000549 0.000179 0.000508 0.00105 0.0000293 * * * * * * * * * 0.0000199 0.000187 0.000863 0.0000163 Copper mg/L 0.002H 0.0001 0.000273 0.000742 0.00137 0.000405 0.0000912 * * * * * * * * * 0.000396 0.000225 0.000702 0.000116 Iron mg/L 0.3 0.004 0.00721 <0.002 0.028 0.175 0.419 * * * * * * * * * <0.002 0.0474 0.0199 0.0928 Lead mg/L 0.001I 0.00001 0.0000061 0.0000226 0.0000431 0.0000476 0.0000072 * * * * * * * * * 0.0000188 0.000021 0.0000217 0.0000091 Lithium mg/L 0.0002 0.00563 0.0299 0.0301 0.0188 0.002 * * * * * * * * * 0.00601 0.00883 0.0444 0.00409 Manganese mg/L 0.00003 0.187 0.173 0.254 1.77 0.664 * * * * * * * * * 0.00258 1.31 0.681 0.039 Mercury mg/L 0.013J, 0.005 0.00005 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 * * * * * * * * * <0.00001 0.0000208 <0.00001 <0.00001 Molybdenum mg/L 0.073 0.000008 0.00165 0.00285 0.0108 0.002 0.000417 * * * * * * * * * 0.002 0.00055 0.00278 0.000384 Nickel mg/L 0.025K 0.00006 0.000435 0.00264 0.00347 0.00176 <0.000005 * * * * * * * * * 0.000292 0.000311 0.00437 <0.000005 Selenium mg/L 0.001 0.0003 0.000255 0.000675 0.000641 0.000272 <0.0001 * * * * * * * * * 0.000279 0.000177 0.000642 <0.0001 Silver mg/L 0.0001 0.000005 0.0000008 0.0000077 0.0000012 0.0000031 <0.0000005 * * * * * * * * * 0.0000011 <0.0000005 <0.0000005 <0.0000005Strontium mg/L 0.000008 0.515 2.05 1.48 1.48 0.123 * * * * * * * * * 0.432 0.621 2 0.129 Sulphur mg/L 0.6 20.7 196 55.4 43.4 0.556 * * * * * * * * * 18.2 18.4 154 0.483 Thallium mg/L 0.0008 0.000003 0.0000025 0.0000105 0.0000058 <0.0000003 0.0000122 * * * * * * * * * 0.0000028 0.0000007 0.0000171 <0.0000003Thorium mg/L 0.00003 0.0000025 0.0000079 0.000008 0.0000063 0.000022 * * * * * * * * * 0.0000023 0.0000078 0.000003 <0.0000003Tin mg/L 0.00007 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 * * * * * * * * * <0.00003 <0.00003 <0.00003 <0.00003 Titanium mg/L 0.00007 0.00109 0.00138 0.00249 0.0024 0.000684 * * * * * * * * * 0.000181 0.00152 0.000946 0.000244 Uranium mg/L 0.000003 0.00123 0.00522 0.00194 0.00107 0.0000389 * * * * * * * * * 0.00121 0.00112 0.00587 0.0000426 Vanadium mg/L 0.00005 0.000246 0.000219 0.000191 0.000692 0.0000415 * * * * * * * * * 0.000221 0.000383 0.0001 0.0000143 Zinc mg/L 0.03 0.0002 0.000521 0.00231 0.00393 0.00187 0.00147 * * * * * * * * * 0.00256 0.000812 0.00219 0.000651 Trace Mercury ng/L 13 0.6 1 2.9 1.3 5.4 3.4 * * * * * * * * * <0.6 7.3 4 1.5





Relative Importance of the Salinity of Inflow Water and Lake Depth

As indicated above, the same four lakes that had no chemocline and turned over in fall 2010 – Pit 35, Pit 142, Pit 25S and Fairfax lakes – were also the lakes that were among the shallowest lakes that were studied in Hatfield (2011). While lake depth is important, the relative salinity of (any) surface and groundwater inflows is also important. For example, the surface salinity of Pit 25S Lake was the highest of any lake studied, much higher than any of the other three lakes that had no chemocline and exhibited turnover in fall 2010 (Hatfield 2011). It may be that the reason why Pit 25S Lake exhibited no chemocline and exhibited turnover in fall 2010 is because the salinity of surface inflows to the lake were sufficiently similar to the salinity of groundwater inflows to the lake such that a salinity gradient could not be created. The relative importance of lake depth and salinity of inflows for Pit 25S Lake is uncertain and, given the current data and information available on end-pit lakes in the Coal Valley area, it is uncertain whether: (i) deeper end-pit lakes with surface and groundwater inflows that have similar salinities would not form chemoclines and would turnover; or (ii) shallower end-pit lakes with a large difference in salinity of surface and groundwater inflows would form chemoclines and permanently stratify.

It should be noted that salinity of groundwater in the Coal Valley area varies widely; MEMS (2008) reported that the concentration of total dissolved solids in groundwater in the Coal Valley area varied from 119 mg/L to 1,330 mg/L. The spatial variability of groundwater salinity may be such that the ability to control the salinity of inputs to end-pit lakes may be limited.

4.4.2.2 Do Stratification and Lake Turnover Matter?

As indicated above: (i) dissolved oxygen concentrations may be the most significant water quality issue related to the ecological viability of end-pit lakes in the Coal Valley area; (ii) the concentrations of dissolved oxygen are a function of the pattern and degree of lake stratification and turnover; and (iii) these are in turn determined by a number of factors, with lake depth and salinity of water inflows being two of the most important.

Figure 6, from Hatfield (2011), indicates the percentage of lake volume that was at a given dissolved oxygen concentration or greater for each of the sampling periods in the 2010/2011 study. Of the lakes with bathymetric maps in an electronic format that could be used in this analysis, three exhibited no chemoclines in 2010 and experienced fall turnover – Pit 35, Pit 142, and Pit 25S lakes, while five did exhibit chemoclines in 2010 and did not experience fall turnover – Pit 25E, Pit 44, Silkstone, Lovett and Pit 45 lakes.

With the exception of Pit 25E Lake, the percent of the total lake volume with a concentration of dissolved oxygen that was greater than the AEW chronic guideline for protection of aquatic life (6.5 mg/L) was similar for all lakes within the 2010 sampling periods: 75% or greater in July 2010; 75% or greater in August 2010; 80% in September 2010; 80% in October 2010; and 0% (for all lakes) in February 2011 (Figure 6). Results from the June 2011 sampling period were


variable with Pit 25E and 25S at 0%, Lovett and Silkstone at 60% or greater and Pit 45, Pit 34, Pit 44 and Pit 142 at 80% or greater. The relative amount of aquatic habitat, as defined by the concentration of dissolved oxygen, is similar across most end-pit lakes and across seasons irrespective of whether or not chemoclines existed and whether or not the lakes exhibited turnover.

The exception to this is Pit 25E Lake. Pit 25E Lake has one of the highest differences in salinity between surface water (epilimnion) and water at lower levels (hypolimnion) (Figure 5) and also had a chemocline that began relatively close to the surface in 2010 (i.e., less than 3 m depth).

Of the total end-pit lake volume in the eight end-pit lakes with bathymetric maps in an electronic format that could be used in this analysis, 84%, 87%, 86%, 89%, and 67% had a dissolved oxygen concentration greater than 6.5 mg/L in July 2010, August 2010, September 2010, October 2010, and June 2011, respectively; these figures include Pit 25E Lake. As indicated in Figure 3 and Figure 6, none of the lakes in the Hatfield (2011) study that were sampled in February 2011 had any portion with a dissolved oxygen concentration greater than 6.5 mg/L.

These results suggest that the effects of chemoclines in end-pit lakes on water quality, particularly dissolved oxygen concentrations, and the consequent inability for end-pit lakes to turnover, may be less than initially thought, and the ability of end-pit lakes be holomictic may be less of an factor in determining amount of viable aquatic habitat than previous studies have indicated (End-Pit Lake Working Group 2004, Hatfield 2008).

4.4.2.3 Impact Analysis Summary

The following conclusions may be made regarding the results of the impact analysis of water quality in end-pit lakes proposed for the Project in the reclamation landscape:

1. All of the end-pit lakes proposed for the Project will likely have groundwater as a major source of water.

2. Some of the end-pit lakes proposed for the Project will be meromictic, others will be holomictic, and others will likely exhibit partial mixis. The specific turnover pattern of any particular end-pit lake cannot be predicted, although the likelihood that an end-pit lake will be holomictic will be greater with similar salinity of (any) surface and groundwater inflows and shallower end-pit lake depth.

3. The concentration of a number of water quality variables, such as nutrients and major ions, are predicted to be higher in the end-pit lakes proposed for the Project than in natural lakes, but these higher concentrations are not at levels that would affect the ecological viability of the end-pit lakes. There are predicted to be relatively few instances of measured water quality variables, including metals, exceeding provincial or federal water quality guidelines in the end-pit lakes proposed for the Project.


4. Patterns of dissolved oxygen concentration with depth and changes in these patterns are predicted to be the major water quality variable influencing amount of suitable aquatic habitat available for aquatic life in the end-pit lakes proposed for the Project.

The relative amount of suitable aquatic habitat available for aquatic life in end-pit lakes proposed for the Project, as a proportion of total end-pit lake volume, is predicted to be similar across all end-pit lakes and generally independent of their turnover pattern or whether or not they exhibit chemoclines. The exception to this is end-pit lakes which may form with extremely large differences in salinity between surface water (epilimnion) and water at lower levels (hypolimnion). The spatial variability in groundwater salinity makes it difficult to predict which end-pit lakes that are proposed for the Project will have sufficiently large differences in salinity with lake depth to influence the relative amount of suitable habitat available for aquatic life.

It is worth noting that, while lake turnover is generally considered an important ecological process in most productive lakes (Hutchinson 1938, Effler and Perkins 1987 and Wetzel 2001) it is not a necessary process governing the ability of a lake to sustain healthy fish populations (Effler and Perkins 1987, Trimbee and Prepas 1988).

4.4.3 Residual Impact Classification

The residual (after mitigation) effects of the Project on surface water quality in the end-pit lakes as a result of their design, construction, and management are assessed as Insignificant:


Duration – Residual, as water quality of the end-pit lakes and any receiving watercourses downstream of the end-pit lakes will likely exhibit little change over time;

Frequency – the effect will be Continuous, as water quality of the end-pit lakes and any receiving watercourses downstream of the end-pit lakes will likely exhibit little change over time;

Reversibility – the effect is assessed as Irreversible, as the end-pit lakes will be permanent features of the reclamation landscape;

Magnitude – Low, as water quality of the end-pit lakes proposed for the Project will likely be suitable for aquatic life;

Project Contribution – Neutral, water quality of the end-pit lakes and any receiving watercourses downstream of the end-pit lakes will provide no direct benefit or loss to surface water quality resources in the LSA;

Direction – Neutral, as water quality of the end-pit lakes will not be significantly different from that of natural lakes; and




The level of confidence in this assessment of residual effects is High. This assessment is based on a good understanding of the water quality characteristics of existing end-pit lakes in the Coal Valley area that is derived from three sets of comprehensive empirical studies on existing end-pit lakes and natural lakes from the 1990s to 2011.

4.5 ENVIRONMENTAL ASSESSMENT SUMMARY

4.5.1 Summary of Mitigation Measures for Surface Water Quality

It is recommended that CVRI undertake the following mitigation measures for surface water quality:

Diversion of clean water around areas to be disturbed;

Minimization of the time interval between clearing/grubbing and subsequent earthworks, particularly at or in the vicinity of watercourses or in areas susceptible to erosion;

Installation of surface runoff collection and treatment systems to control groundwater seepage from road cuts and surface runoff from disturbed areas. Surface runoff will be directed to settling impoundments for removal of settleable solids;

Slope grading and stabilization techniques will be adopted. Slopes will be contoured to produce moderate slope angles to reduce erosion risk. Other stabilization techniques used to control erosion include: ditching above the cutslope to channel surface runoff away from the cutslope, leaving buffer (vegetation) strips between the construction site and a watercourse, placing large rock rip rap to stabilize slopes;

Temporary measures to control erosion before a vegetation cover is re-established, including: diversion ditches, drainage control, check dams, sediment ponds, sumps and mulches;

Progressive reclamation to reduce the amount of disturbed area at any given time. During reclamation, permanent plant cover and revegetation will be established. Soil erosion will be reduced by minimizing the time that reclaimed surfaces are left bare;

Whenever possible, construction activities in close proximity to watercourses will be carried out during periods of relatively low surface runoff in late fall, winter and early spring (from October to April). A 30 m buffer (vegetation) strip will be left between construction sites and watercourses except at stream crossings and diversions;


The design and construction of all stream crossings will be done in compliance with the Alberta Code of Practice for Watercourse Crossings and associated guidelines. This means that all stream crossings constructed by the Project will meet regulatory requirements for protection of fish resources and aquatic habitat; this will also effectively mitigate against effects on surface water quality;

Where necessary, interim erosion/sediment control measures will be utilized until long-term protection can be effectively implemented;

The use of explosives with less slurry to reduce the amount of nitrogen compounds released;

Minimization of water contact with explosives. Nitrogen compounds found in explosives are water soluble and water control activities (dewatering of pit areas, use of diversion ditches and interceptor ditches) will ensure the driest conditions possible for mining and blasting operations;

Explosives will be properly stored to prevent contact with surface waters;

Water from pit dewatering operations will be directed to settling impoundments for treatment prior to discharge of surface waters. In impoundments, pit water will mix with surface runoff. If necessary, flocculants will be used to enhance the rate of settlement of suspended solids. Impoundment discharges will be subject to conditions in the EPEA approval;

All mine-affected water will be treated prior to its release in to the receiving waters to reduce potential effects from loading of suspended sediments and potential effects of water quality variables typically associated with suspended sediments (e.g., total aluminum and total iron). CVRI will pay particular attention to selenium (see below). The mine wastewater treatment program similar to the one currently in use at the CVM will be established to minimize downstream siltation and minimize downstream effects on surface water quality;

An adaptive management approach to water treatment has been used in the existing CVM and will be used for this Project as well. The water management system design and maintenance have been consistently improved using best available technology which has resulted in significant increases in waste water treatment efficiency;

Release of water pollutants from the site such as oil and grease is controlled. With the installation of oil booms on the impoundments and immediate containment of oil in the event of a spill, there is little danger of these materials contaminating surface waters. Components of the water handling system will be designed according to the governmental specification and the systems will be operated in accordance with regulatory approval requirements; and


With respect to selenium, the CVM will continue an effective water quality monitoring program including a focus on selenium concentrations. The objective will be to observe water quality relative to baseline values to identify any changes over time. Should a significant increase in selenium levels be noted an investigation will be undertaken to identify possible sources and mitigation plans will be implemented.

4.5.2 Environmental Monitoring

As for past mines in the Coal Valley area, CVRI will conduct environmental monitoring as required in all Project approvals. This is expected to include: monitoring of Project impoundments and monitoring for surface water quality in natural watercourses, both upstream and downstream of Project activities.

4.5.3 Summary Environmental Assessment

With mitigation, monitoring and adaptive management the Project will have an insignificant impact on watercourses in the Local and Regional Study Areas. A summary of the environmental assessment is provided in Table 17.


Table 17 Environmental assessment summary of the Project.

Issue Case Geographic Extent1 Duration2 Frequency3 Reversibility4 Magnitude of

Effect5 Project Contribution

and Direction6 Confidence

Rating7 Probability of

Impact or Effect Occurrence8

Significance9

Changes in Surface Water Quality from Construction Activities

Application Local Short Isolated Reversible,

Short-term Low Negative High High Insignificant

Regional Short Isolated Reversible, Short-term Low Negative High High Insignificant

Planned Development

Local Short Isolated Reversible, Short-term Low Negative High High Insignificant

Regional Short Isolated Reversible, Short-term Low Negative High High Insignificant

Changes in Surface Water Quality from use of Nitrogen-Based Explosives

Application Local Long Periodic Reversible,

Long-term Low Negative High High Insignificant

Regional Long Periodic Reversible, Long-term Low Negative High High Insignificant

Planned Development

Local Long Periodic Reversible, Long-term Low Negative High High Insignificant

Regional Long Periodic Reversible, Long-term Low Negative High High Insignificant

Changes in Surface Water Quality from Operation of Project Impoundments

Application Local Extended Occasional Reversible,

Long-term Low Negative High High Insignificant

Regional Extended Occasional Reversible, Long-term Low Negative High High Insignificant

Planned Development

Local Extended Occasional Reversible, Long-term Low Negative High High Insignificant

Regional Extended Occasional Reversible, Long-term Low Negative High High Insignificant

Water Quality of End-Pit Lakes Application Local Residual Continuous Irreversible Low Neutral High High Insignificant

1 Local, Regional, Provincial, National, Global 2 Short, Long, Extended, Residual 3 Continuous, Isolated, Periodic, Occasional, Accidental, Seasonal 4 Reversible in short term, Reversible in long term, Irreversible – rare 5 Nil, Low, Moderate, High 6 Neutral, Positive, Negative 7 Low, Moderate, High 8 Low, Medium, High 9 Insignificant, Significant




5.0 CLOSURE

We trust the above information meets your requirements. If you have any questions or comments, please contact the undersigned.

HATFIELD CONSULTANTS:

Approved by:

February 24, 2012

Peter McNamee Project Director

Date

mckeagep

Typewritten Text

<original signed by>


6.0 REFERENCES

AENV (Alberta Environment). 1999. Surface Water quality guidelines for use in Alberta. Accessed at http://environment.gov.ab.ca/info/library/5713.pdf

AENV. 2011. Final Terms of Reference Environmental Impact Assessment (EIA) report for the Proposed Coal Valley Robb Trend Mine Project. 16 pp.

Agbeti, M.D. 1998. Water quality of two end-pit lakes in relation to fishery sustainability. Prepared for: Luscar Ltd. Prepared by: Bio-Limno Research & Consulting. 80 pp.

Agbeti, M.D. 1999. Water quality of two end-pit lakes in relation to fishery sustainability. Prepared for: Luscar Ltd. Prepared by: Bio-Limno Research & Consulting. 80 pp.

CCME (Canadian Council of Ministers of the Environment). 2007. Canadian Environmental Quality Guidelines.

Chapman, P.M. 1999. Selenium – a potential time bomb or just another contaminant? Hum. Ecol. Risk Assess. 5(6): 1123-1138.

Cumulative Effects Assessment Working Group. 1999. Cumulative Effects Assessment Practitioners Guide. Canadian Environmental Assessment Agency.

CVRI. 2008. Application for Mercoal West-Yellowhead Tower Mine Expansion Project.

CVRI. 2012. Application for Robb Trend Mine Project.

Dodds, W.K. 2006. Eutrophication and trophic state in rivers and streams. Limnological Oceanography 61 (1, part 2) 671-680.

Effler, S.W. and W.G. Perkins. 1987. Failure of Spring Turnover in Onondaga Lake, NY. Water, Air, and Soil Pollution, 34: 285-291.

End-Pit Lake Working Group. 2004. Guidelines for Lake Development at Coal Mine Operations in Mountain Foothills of the Northern East Slopes, Report # ESD/LM/00-1, Alberta Environment, Environmental Service.

Hackbarth, D. 1999. Nitrate in Surface Runoff from Coal Mines in the Coal Branch: A Review of Existing Information.

Hatfield (Hatfield Consultants). 2008. Surface Water Quality EIA: Mercoal West and Yellowhead Tower Project.

Hatfield (Hatfield Consultants). 2011. An Evaluation of water quality in existing end-pit lakes in the Coal Valley Mine Area. 46pp + Appendices.

Hutchinson, G.E. 1938. On the relationship between the oxygen deficit and the productivity and topology of lakes. Int. Rev. Hydrobiol. 36: 336-355.

http://environment.gov.ab.ca/info/library/5713.pdf�


Lifeways. 2012. Robb Trend Mine Project: Traditional Land Use Report.

Luscar Ltd. 1994. Development of sport fisheries in lakes created by coal mining operations in the eastern slopes. 151 pp.

Luscar Ltd. 1999. Surface Water Quality Impact Assessment: Coal Valley Extension. Prepared by Luscar Ltd., March 1999.

Luscar Ltd. 2002. Coal Valley Mine: Annual wastewater, groundwater, domestic wastewater, and waterworks, combined report for 2001.





Mackay, W.C. 1999. Coal Valley Mine Extension: Cumulative effects of reclaimed end-pit lakes on water quality and fisheries resources. Prepared for: Luscar Ltd. Prepared by: W.C. Mackay & Associates. 39 pp.

Matrix. 2012. Mercoal West-Yellowhead Tower Mine Expansion Project: Surface Water Hydrology Report.

MEMS (Millennium EMS Solutions Ltd.) 2005. Luscar Ltd., Coal Valley Mine Mercoal East Phase 2 water quality impact statement. Prepared for Luscar Ltd.

MEMS. 2008. Hydrogeology EIA: Mercoal West and Yellowhead Tower. Prepared by Millennium EMS Solutions Ltd. for Coal Valley Resources Inc.

MEMS. 2012. Hydrogeology EIA: Robb Trend Mine Project. Prepared by Millennium EMS Solutions Ltd. for Coal Valley Resources Inc.

Strategic Advisory Panel on Selenium Management. 2010. A strategic plan for the management of selenium at Teck coal operations.

Trimbee, A.M. and E.E. Prepas. 1988. Dependence of lake oxygen depletion rates on maximum oxygen storage in a partially meromictic lake in Alberta. Can. J. Fish. Aquat. Sci. 45:571-576.

Wayland, M. and R. Crosley. 2006. Selenium and other trace elements in aquatic insects in coal mine-affected streams in the Rocky Mountains of Alberta, Canada. Arch. Environ. Contam. Toxicol. 50: 511-522.

Wetzel, R.G. 2001. Limnology: Lake and River Ecosystems. Third Edition. Academic Press, San Diego, California. 1006 pp.

HINTON

EDSON

Mercoal West Mine

Yellowhead Tower Mine

McLeod R.

McLeod R.

Embar

ras R.

Erith R.

Pembina R.

16

16

40

47

40

South Block

Mercoal Phase 2

Coal Valley Extension

to JASPER(70 km)

EDMONTON(180 km)

ROBB

COALSPURMERCOALMcLeod R.

McLe

od R.

Gregg R.

Brazeau R.

Athabasca R.

Coal Valley Mine

Rge 17/W5M

Twp 52

Rge 18Rge 19Rge 20Rge 21Rge 22Rge 23Rge 24Rge 25

Twp 51

Twp 50

Twp 49

Twp 48

Twp 47

Twp 46

Twp 45

Location ofRobb Trend Mine

Pembin

a R.

Jasper National Park

475,000

475,000

500,000

500,000

525,000

525,000

550,000

550,000

5,875

,000

5,900

,000

5,925

,000

K:\Data\Project\MEMS1614\_MXD\MEMS1614_1_Location_20120105.mxd

Figure 1 Location of Robb Trend Project.

Data Sources:a) Watercourses, Mine Permit Boundaries and Dragline Walkroad from Millennium EMS Solutions Ltd.b) Roads, railway, and lakes from1:250K National Topographic Data Base.c) Jasper National Park boundary from ESRI's

t

LegendRivers/CreeksRoadsLakes/PondsProposed Robb Trend Mine Permit BoundaryPermit Boundary of Approved Mines

!

!

A l b e r t a

CALGARY

EDMONTON

Scale: 1:525,0000 9 184.5 KmProjection: NAD 1983 UTM Zone 11N

!

!!

!

!!

!!!

! ! !

!

!

!

!

!

! !

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

ER-WQ-1ER-WQ-2

HA-WQ-1HA-WQ-2

EM-WQ-2

UTWC-E

ER-WQ-0.5

ERT1-WQ

ER-WQ-3

EM-WQ-1

EM-WQ-3

EM-WQ-4

UTWC-W

EM-RC

EM-2

EM-3

EM-4

UCNR

UTPCUTPR

ET1

ET2 ET3

ET4

HPEHPW

HPC

LUC

PR1PR2

PR5

PR6, PR7, PR8

BRC

PRC

BC

LC

EM-1

MC

Eri th Ri ver

Mitch

e l l C

reek

Eri t h R iv erLovett River

Embarr as R

iver

McLeod River

PR4PR3

"

480,000 510,000 540,000

5,880

,000

5,880

,000

5,910

,000

5,910

,000

K:\Data\Project\MEMS1614\_MXD\MEMS1614_3_RSALSA_20120106a.mxd

Figure 2 Local and Regional Study Areas and sampling locations used to develop surface water quality baseline for Robb Trend Project.

Data Sources:a) Watercourses and Roads from 1:50,000 National Topographic Data Base.b) Mine Permit Boundaries from Millennium EMS Solutions Ltd. t

LEGEND! Water Quality Sites

Rivers / CreeksMajor RoadsLocal Study Area WatercoursesRegional Study Area Water Courses

Lakes / PondsProposed Robb Trend Mine Permit BoundaryPermit Boundary of Approved Mines

A l b e r t aScale: 1:400,0000 6.5 133.25 KmProjection: NAD 1983 UTM Zone 11N




Figure 3 Dissolved oxygen depth profiles of lakes sampled in 2010 and 2011.

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14D

epth

(m)

July 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14

Dep

th (m

)

August 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14

Dep

th (m

)

September 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14

Dep

th (m

)

October 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14

Dep

th (m

)

February 2011

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 2 4 6 8 10 12 14

Dep

th (m

)

June 2011

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

Note: Pit 44 and Silkstone Lakes were not sampled in February 2011 due to unsafe ice conditions.




Figure 4 Ionic characteristics of sampled end-pit lakes, a natural lake, groundwater, and surface watercourses in the Coal Valley area.




Figure 5 Total dissolved solids depth profiles of sampled lakes.

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000D

epth

(m)

July 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000

Dep

th (m

)

August 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000

Dep

th (m

)

September 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000

Dep

th (m

)

October 2010

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000

Dep

th (m

)

February 2011

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Pit 24

Pit 35

0

2

4

6

8

10

12

14

16

18

20

22

0 200 400 600 800 1000

Dep

th (m

)

June 2011

Fairfax

Pit 45

Lovett

Pit 25E

Pit 25S

Pit 142

Silkstone

Pit 44

Pit 24

Pit 35

Note: Pit 44 and Silkstone Lakes were not sampled in February 2011 due to unsafe ice conditions.




Figure 6 Relationship between end-pit lake volume and dissolved oxygen concentrations (from Hatfield 2011).

July 2010

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[Dis

solv

ed O

xyge

n] o

r Gre

ater

Dissolved Oxygen (mg/L)

Pit 45

Pit 35

25E

25S

44

142

Lovett

Silkstone

Alberta Environment Guidelinefor Protection of Aquatic Life

↗

August 2010

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[D

isso

lved

Oxy

gen]

or G

reat

er


Pit 45

Pit 35

25E

25S

44

142

Lovett

Silkstone


↗

September 2010

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[D

isso

lved

Oxy

gen]

or G

reat

er


Pit 45

Pit 35

25E

25S

44

142

Lovett

Silkstone


↗

October 2010

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[Dis

solv

ed O

xyge

n] o

r Gre

ater


Pit 45Pit 3525E25S44142LovettSilkstone


↗

February 2011

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[Dis

solv

ed O

xyge

n] o

r Gre

ater


Pit 45Pit 3525E25S44142Lovett


↖

June 2011

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

% V

olum

e w

ith G

iven

[D

isso

lved

Oxy

gen]

or G

reat

er


Pit 45

Pit 35

25E

25S

44

142

Lovett

Silkstone


↗

Note: Water quality depth profile not collected on Silkstone Lake in February 2011 due to unsafe ice conditions.



APPENDICES

Appendix A1

Description of Water Quality

Field Program

Surface Water Quality Report A1-i Hatfield Rob Trend Project

TABLE OF CONTENTS

A1.0 DESCRIPTION OF WATER QUALITY FIELD PROGRAM .............. 1-1

A1.1 WATER QUALITY FIELDWORK ACTIVITIES ...................................................... 1-1 A1.2 SAMPLE SHIPMENT AND ANALYSIS ............................................................... 1-15 A1.3 QA/QC ANALYSIS .............................................................................................. 1-15

LIST OF TABLES

Table A1.1 Water quality QA/QC results: field and trip blanks. .................................. 1-17

Table A1.2 Water quality QA/QC results: field splits. ................................................. 1-21

LIST OF FIGURES

Figure A1.1 Surface water quality sampling sites ET (1-4), Erith River. ....................... 1-2

Figure A1.2 Surface water quality sampling site BC, Bacon Creek. ............................. 1-3

Figure A1.3 Surface water quality sampling site LC, Lendrum Creek above confluence with Erith River. ....................................................................... 1-4

Figure A1.4 Surface water quality sampling site LUC, Lund Creek .............................. 1-5

Figure A1.5 Surface water quality sampling site HA 1, Hay Creek upstream of confluence with Embarras River. ............................................................... 1-6

Figure A1.6 Surface water quality sampling site ERT1, Erith River Tributary. .............. 1-6

Figure A1.7 Surface water quality sampling site UCNR, Unnamed creek immediately north of Robb, Tributary of Embarras River. .......................... 1-7

Figure A1.8 Surface water quality sampling site EM-RC, Embarras River upstream of Rodney Creek. ....................................................................... 1-8

Figure A1.9 Surface water quality sampling site MCLD-3, McLeod River above confluence with Embarras River. ............................................................... 1-9

Figure A1.10 Surface water quality sampling site PRC, Prest Creek. ........................... 1-10

Figure A1.11 Surface water quality sampling site UTPR, Unnamed tributary to Preset Creek. ........................................................................................... 1-11

Figure A1.12 Surface water quality sampling site UTWC-W, unnamed tributaries to White Creek. ........................................................................................ 1-12

Figure A1.13 Surface water quality sampling site UTWC-E, unnamed tributary to White Creek. ........................................................................................ 1-13

Figure A1.14 Surface water quality sampling site BRC, Bryan Creek ........................... 1-14

Surface Water Quality Report A1-1 Hatfield Robb Trend Project

A1.0 DESCRIPTION OF WATER QUALITY FIELD PROGRAM

A1.1 WATER QUALITY FIELDWORK ACTIVITIES

The Rob Trend Coal Mine field sampling program took place over an extended period of time, and as a result, field activities took place over multiple years and sampling seasons (Table 5 of main report). For the purpose of this EIA, Water quality baseline surveys were conducted in June (spring), July-August (summer), September-October (fall) and December-January (winter) 2005-2010. Sampling locations were identified using UTM coordinates, and locations were accessed by ATV-quad, truck, and foot. Field data were recorded on separate datasheets and digital photographs of each site were taken and catalogued. Details of each location sampled are provided in Figure A1.1 to Figure A1.14.

Standard Operating Procedures (SOPs) developed using sampling guidance described by Environment Canada (2002, 2005), the Government of British Columbia (2003) and the Athabasca Oil Sands Regional Aquatics Monitoring Program (RAMP 2005) were used for all field sampling. Water sampling involved collecting single grab samples by submerging sample bottles to a depth of approximately 30 cm (where possible), uncapping and filling the bottle, and recapping at depth. Grab samples were collected upstream of the person collecting the sample to avoid disturbing the substrate and all sampling personal wore using nitrile powder-free gloves. Samples taken at mouths of tributaries of the McLeod and Embarras Rivers were collected not less than 50 m upstream of tributary confluences to avoid influences of mainstem water on sampled water quality at each location.

At all water quality sampling locations, in situ measurements of pH, dissolved oxygen, water temperature and conductivity were collected using a Hanna HI 9828 multi-probe water meter, or a LaMotte Tracer Pocketester. Dissolved oxygen titrations were performed in the field using a LaMotte Winkler titration kit (code 5860).

A field blank, trip blank, and field split were also collected for QA/QC purposes during each field program. Potential contamination of samples during collection, handling, and transport was assessed using a field blank and a trip blank. The field blank was used to assess potential contamination from sample handling, and was prepared in the field by filling sample bottles with de-ionized water provided by the labs. The trip blank, prepared in the analytical laboratory prior to sampling and kept sealed for the duration of the sampling trip, was used to evaluate potential contamination from the sample container and the efficacy of sample preservation and storage conditions. The sample split was collected at one station in each season to assess analytical precision in the lab. All blanks and splits were labeled with dummy codes to ensure “blind” laboratory analysis.


Figure A1.1 Surface water quality sampling sites ET (1-4), Erith River.

ET-2, Upstream of Rob Trend 27 January 2010

Weather Conditions: Water Temperature:

Conductivity: pH:

Dissolved oxygen: Notes:

Sunny, clear, cold 0.02oC 35 μS/cm 7.86 12.45 mg/L Ice thickness = 0.38m, sample taken under bridge. Field split also taken here

ET-3, Upstream of Rob Trend 6 June 2007


Conductivity: pH:


Partly cloudy, cool 7.8oC 114 μS/cm 7.92 10.24 mg/L High flows, velocity and turbidity. Difficult to access, sample take near shore.

ET-4, Upstream of Embarras Confluence 9 January 2008


Conductivity: pH:


Clear, cold 0.003oC 0.001 μS/cm 7.78 5.57 mg/L Ice thickness = 0.45m


Figure A1.2 Surface water quality sampling site BC, Bacon Creek.

08 January 2008


Conductivity: pH:


Mainly cloudy, cool 0.0oC 0.06 μS/cm 7.85 5.71 mg/L Ice thickness = 0.35 m, water depth 0.15 m

8 August 2008


Conductivity: pH:


Partly overcast, light rain 11.4oC 401 μS/cm 8.49 9.5 mg/L Estimated wetted width: 1.5 m; estimated average water depth: 0.2 m

26 September 2007


Conductivity: pH:


Overcast 5.5oC 329 μS/cm 7.02 12.2 mg/L Estimated wetted width: 2 m, estimated average water depth: 0.3 m

28 June 2006


Conductivity: pH:


Clear, calm 11.14oC 249 μS/cm 8.2 7.52 mg/L Estimated wetted width: 1.8 m Upstream beaver dam has affected channel.


Figure A1.3 Surface water quality sampling site LC, Lendrum Creek above confluence with Erith River.

28 June 2006


Conductivity: pH:


Clear; calm 16.64°C 283 μS/cm 8.35 6.99 mg/L Run; cobble and gravel; average wetted width 5 m; average depth 0.30 m

8 August 2007


Conductivity: pH:


Cloudy, light rain 14.87 °C 178 μS/cm 8.62 9.1 mg/L Riffle; run; cobbles and gravel; width 6 m; depth 0.3 m

2 October 2007


Conductivity: pH:


Overcast, cool 4.7 °C 342 μS/cm 7.0 12.6 mg/L Riffle; run; cobble gravel; 8 m wide; 30 cm deep

19 December 2006


Conductivity: pH:


Clear, cold 0.04 °C 0.423 μS/cm 7.98 13.11 mg/L Riffle; water 20 cm deep; ice 10 cm thick


Figure A1.4 Surface water quality sampling site LUC, Lund Creek

06 June 2007


Conductivity: pH:


Overcast, rain 7.01°C 109 μS/cm 7.91 10.16 mg/L Run; cobble; 9 m wide; 20 cm deep

8 August 2007


Conductivity: pH:


Clear, warm 13.25 °C 123 μS/cm 8.91 8.85 mg/L Run; gravel and silt; 8 m wide; 0.5 m deep. Downstream of beaver dam.

30 September 2008


Conductivity: pH:


Light overcast 5.8 °C 265 μS/cm 7.01 12.2 mg/L Run; gravel and silt; 6 m wide; 0.2 m deep. Downstream of beaver dam.

8 January 2008


Conductivity: pH:


Partly cloudy, cold 0.08°C 237 μS/cm 7.67 11.59 mg/L Water 0.10 m deep; ice 0.06 m thick


Figure A1.5 Surface water quality sampling site HA 1, Hay Creek upstream of confluence with Embarras River.

8 January 2008


Conductivity: pH:


Partly cloudy, cold 0.56°C 0.373 μS/cm 8.04 12.03 mg/L Water 0.15 m deep; ice 0.05 m thick

Figure A1.6 Surface water quality sampling site ERT1, Erith River Tributary.

6 June 2007


Conductivity: pH:


Partly cloudy, cool 9.45°C 111 μS/cm 7.82 9.63 mg/L Run; wetted width 3 m wide; 0.2 m deep.


Figure A1.7 Surface water quality sampling site UCNR, Unnamed creek immediately north of Robb, Tributary of Embarras River.

16 June 2010


Conductivity: pH:


Clear with some clouds 10.9oC 270 μS/cm 8.06 9.0 mg/L Run. Estimated wetted width: 1.5 m; estimated average water depth: 0.19 m.

29 July 2010


Conductivity: pH:


Clear and warm 18.78oC 311 μS/cm 8.54 6.28 mg/L Water levels and wetted widths were similar to spring conditions.

14 Oct 2010


Conductivity: pH:


Clear and cold 4.1oC 352 μS/cm 8.3 10 mg/L

February 2011


Conductivity: pH:


Clear and cold 0.1 oC 562 μS/cm 8.04 7.02 mg/L Sampled 75 m upstream of previous seasons.


Figure A1.8 Surface water quality sampling site EM-RC, Embarras River upstream of Rodney Creek.

17 June 2010


Conductivity: pH:


Clear, warm 11.3oC 208 μS/cm 8.22 9.2 mg/L Estimated wetted width: 50 m; sample site water depth: 0.33 m

30 July 2010


Conductivity: pH:


Clear, warm 17.06 oC 326 μS/cm 8.59 6.78 mg/L Water levels were lower than spring field season

14 Oct 2010


Conductivity: pH:


Clear, cool 16 oC 300 μS/cm 8.4 9.4 mg/L

February 2011


Conductivity: pH:


Clear, cold 1.3 oC 436 μS/cm 8.15 9.02 mg/L


Figure A1.9 Surface water quality sampling site MCLD-3, McLeod River above confluence with Embarras River.

16 June 2010


Conductivity: pH:


Clear, light breeze 10.3oC 283 μS/cm 8.2 10.0 mg/L 70 m upstream of bridge, water turbid. Estimated wetted width: 50 m; sample site water depth: 1.0 m

30 July 2010


Conductivity: pH:


Clear, warm 18.39oC 349 μS/cm 8.41 6.77 mg/L

14 Oct 2010


Conductivity: pH:


Clear, cool 5.8oC 377 μS/cm 8.59 9.9 mg/L

1 February 2011


Conductivity: pH:




Figure A1.10 Surface water quality sampling site PRC, Prest Creek.

16 June 2010


Conductivity: pH:


Clear, moderate breeze 2.4oC 158 μS/cm 7.4 10.6 mg/L Small creek, estimated wetted width: 0.6 m; estimated sample depth: 0.3 m.

29 July 2010


Conductivity: pH:


Sunny, warm 19.61oC 98 μS/cm 8.70 4.21 mg/L

14 Oct 2010


Conductivity: pH:


Clear, cool 17oC 220 μS/cm 7.89 9.6 mg/L

February 2011


Conductivity: pH:


Clear, cold n/a n/a n/a n/a Site was frozen to depth and no sample could be collected.


Figure A1.11 Surface water quality sampling site UTPR, Unnamed tributary to Preset Creek.

16 June 2010


Conductivity: pH:


Clear, light clouds 4.5oC 87 μS/cm 7.26 7.6 mg/L Small creek, sample taken upstream of road. Wetted width: 0.8 m; sample depth: 0.45 m.

29 July 2010


Conductivity: pH:



14 October 2010


Conductivity: pH:



1 February 2011


Conductivity: pH:


Clear, cold 0.0 oC 282 μS/cm 8.02 7.8 mg/L Ice thickness: 0.15 m Water depth: 0.30 m


Figure A1.12 Surface water quality sampling site UTWC-W, unnamed tributaries to White Creek.

16 June 2010


Conductivity: pH:


Clear, light clouds 3.0 oC 94 μS/cm 7.56 10.4 mg/L Small man-made section of creek, sample taken upstream of road. Wetted width: 1.2 m; sample depth: 0.24 m.

29 July 2010


Conductivity: pH:


Clear, warm 10.19 oC 125 μS/cm 9.06 7.65 mg/L

14 October 2010


Conductivity: pH:


Clear, cool 8.05 oC 136 μS/cm 8.05 10.0 mg/L

1 February 2011


Conductivity: pH:




Figure A1.13 Surface water quality sampling site UTWC-E, unnamed tributary to White Creek.

16 June 2010


Conductivity: pH:


Clear, light clouds 10.0 oC 185 μS/cm 7.0 5.65 mg/L Small creek near wetland. Wetted width: 0.75 m; sample depth: 0.6 m.

29 July 2010


Conductivity: pH:


Clear, warm 13.20 oC 175 μS/cm 7.37 2.84 mg/L

14 October 2010


Conductivity: pH:



2 February 2010


Conductivity: pH:




Figure A1.14 Surface water quality sampling site BRC, Bryan Creek

16 June 2010


Conductivity: pH:


Clear, light clouds 6.1 oC 111 μS/cm 7.50 10.2 mg/L Small creek, water slightly turbid. Wetted width: 2.5 m; sample depth: 0.30 m.

29 July 2010


Conductivity: pH:


Sunny, warm 17.33 oC 173 μS/cm 8.63 6.90 mg/L

14 October 2010


Conductivity: pH:


Sunny, cool 2.5 oC 161 μS/cm 8.05 10.4 mg/L

1 February 2011


Conductivity: pH:




A1.2 SAMPLE SHIPMENT AND ANALYSIS

Samples were collected, preserved and shipped according to protocols specified by consulting laboratories. Standard water quality variables and organics/hydrocarbons were analyzed by ALS Laboratory Group (ALS) in Edmonton, Alberta, with metals (including ultra-trace mercury) analyzed by Alberta Innovates in Vegreville, Alberta.

A1.3 QA/QC ANALYSIS

Field and trip blank analytical results were compared to analytical detection limits. Water quality variable concentrations in the blank samples greater than five times the detection limit were assumed to demonstrate potential contamination of samples during sample collection or analysis or analytical error. Blanks with water quality variable concentrations below or near detection limits represent samples that were collected, handled, and analyzed without contamination or potential errors.

Analytical results for the split samples were compared, and relative percent difference (|difference between data values/average of data values, multiplied by 100%|) was calculated for each water quality variable. Relative percent differences of greater than 20% were noted as potentially unacceptable levels of precision. However, because precision decreases as the water quality variable concentration approaches the detection limit, relative percent differences greater than 20% were considered to be of significance only if water quality variable concentrations in both samples were greater than five times the detection limit.

Concentrations of water quality variables in field and trip blanks for all seasons are shown in Table A1.1.

The QA/QC results are similar for all seasons for field and trip blanks. With the exception of nitrate plus nitrite in the summer field blank of 2006 and hydrocarbons and TDS in the winter trip blank of 2009, concentrations of all physical variables, nutrients, ions, and organics/hydrocarbons were less than five times the detection limits in both the field and trip blanks in all sampling seasons.

In all seasons, several total metal concentrations in both the field and trip blanks were greater than five times the detection limit. There was also a notable decrease in detection limit exceedances, > 5 times, in 2010. Prior to 2010 the average total metals trip blank results >5 times the detection limit ranged from 17% in 2006 to 25% in 2009 and from 14% in 2007 to 27% in 2009 for field blanks. In 2010 the average exceedances > 5 times the detection limits was 2% for trip blanks and 3% for field blanks. In addition, for both trip and field blanks, a number of elevated concentrations occurred for the same total metals in different seasons. This suggests that the source of these exceedances was related to consistent characteristics of laboratory water, sample bottle handling or storage, analytical procedures, or some other factor that is consistent across years rather than accidental contamination in the field.


Concentrations of water quality variables in the sample splits are shown in Table A1.2. For all cases (2006-2010) of physical variables, nutrients, and ions, only colour in spring 2006, sulphate in the winter of 2006 and 2008, and TOC in summer 2010 exceeded 20% relative difference to the sample concentration and had sample concentrations greater than five times the detection limit. The relative percent difference in concentrations of total metals greater than 20% (with concentrations greater than five times the detection limit) was similar to that of field and trip blanks with a notable decrease in 2010. Between 2006 and 2009, the average exceedance was 9% of all total metals analyzed and in 2010 the average exceedance was 6%. Results are generally similar between seasons of the same year.

Table A1.1 Water quality QA/QC results: field and trip blanks.

Water Quality Variable Unit Detection Limit

Spring 2006 Trip Blank

Spring 2006 Field Blank

Summer 2006 Trip Blank

Summer 2006 Field Blank

Fall 2006 Trip Blank

Fall 2006 Field Blank

Winter 2006 Trip Blank

Winter 2006 Field Blank










Physical Variables, Nutrients, Ions, and Organics/HydrocarbonsAlkalinity, Total (as CaCO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5Ammonia-N mg/L 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Bicarbonate (HCO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5Biochemical Oxygen Demand mg/L 2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2Calcium (Ca) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5Carbonate (CO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5Chloride (Cl) mg/L 1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1Color, True T.C.U. 2 <2.5 2.5 <2.5 <2.5 <2.5 <2.5 <2 2 <2 <2 <2 <2 <2 n/s n/s <2 <2Dissolved Organic Carbon mg/L 1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 n/s <1 <1Hardness (as CaCO3) mg/L - <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1Hydrocarbons, Recoverable (I.R.) mg/L 0.5 n/s n/s n/s n/s <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1 <0.5 <0.5 n/s n/s <0.5 <0.5Hydroxide (OH) mg/L 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5Magnesium (Mg) mg/L 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1Naphthenic Acids mg/L 1 n/s n/s n/s n/s <1 1 <1 <1 <1 <1 <1 <1 <1 <1 n/s <1 1Nitrate (as N) mg/L 0.05 n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/sNitrate+Nitrite-N mg/L 0.1 <0.1 <0.1 <0.1 0.9 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1Nitrite (as N) mg/L 0.05 n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/s n/sPhenols (4AAP) mg/L 0.001 n/s n/s n/s n/s <0.001 <0.001 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001Phosphorus, Total mg/L 0.001 <0.001 <0.001 0.002 <0.001 <0.001 <0.001 <0.001 0.001 <0.001 <0.001 <0.001 0.002 0.001 <0.001 <0.001 <0.001 <0.001Phosphorus, Total Dissolved mg/L 0.001 <0.001 <0.001 0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 0.001 <0.001 <0.001 <0.001 <0.001Potassium (K) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5Sodium (Na) mg/L 1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1Sulfate (SO4) mg/L 0.5 <0.5 0.9 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 2.7 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5Sulphide mg/L 0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.011 <0.003 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002Total Dissolved Solids mg/L 5 8 8 <5 <5 <5 <5 <5 5 <5 <5 <5 <5 <5 <5 <5 <5 <5Total Kjeldahl Nitrogen mg/L 0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2Total Organic Carbon mg/L 1 <1 <1 <1 <1 <1 1 <1 <1 <1 2 <1 <1 <1 <1 <1 <1 <1Total Suspended Solids mg/L 3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 3 3 <3 <3 <3 <3Total MetalsAluminum mg/L 0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 0.0007 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 0.0005Antimony mg/L 0.0000005 <0.0000005 0.0000013 0.0000022 <0.0000005 0.000026 0.0000011 0.0000035 0.0000025 0.0000071 0.0000038 0.0000066 0.0000005 0.0000324 0.000001 0.0000016 0.0000026 0.0000034Arsenic mg/L 0.000002 <0.000002 0.0000047 <0.000002 0.000007 0.0000149 0.0000098 <0.000002 <0.000002 0.0000111 0.0000063 <0.000002 0.0000041 0.0000212 0.0000031 0.0000068 0.0000053 0.000022Barium mg/L 0.000004 0.000103 0.0000689 <0.000004 0.0000163 0.000015 0.000014 0.0000209 0.000036 0.0000611 0.0000192 0.0000375 <0.000004 0.0000123 0.0000426 0.0000698 0.0000247 0.0000559Beryllium mg/L 0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 0.0000044 <0.000003 <0.000003 <0.000003Bismuth mg/L 0.000001 <0.000001 <0.000001 0.0000015 0.0000027 0.0000022 0.0000015 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 0.0000013 <0.000001 <0.000001 <0.000001 <0.000001Boron mg/L 0.00005 0.00234 0.000109 0.000897 0.000384 0.000333 0.000217 0.000144 0.00047 0.000302 0.00041 0.0006 0.00024 0.000171 0.001 0.0003 0.0003 0.00067Cadmium mg/L 0.000002 0.0000137 0.0000038 0.0000073 0.0000111 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002Calcium mg/L 0.004 0.0347 <0.004 <0.004 0.0043 0.0042 0.0046 <0.004 0.0308 <0.004 0.0041 <0.004 <0.004 0.0267 <0.004 <0.004 0.0087 0.0048Chlorine mg/L 0.1 0.507 0.719 <0.1 0.278 0.49 0.378 0.146 <0.1 0.11 0.112 <0.1 <0.1 0.237 0.8 0.84 <0.1 0.25Chromium mg/L 0.00004 <0.00004 0.000048 <0.00004 0.00006 0.0000701 0.000042 0.0000817 0.000083 0.000116 0.000176 <0.00004 <0.00003 0.000116 0.00004 0.000042 0.000037 0.000148Cobalt mg/L 0.000001 0.0000074 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 0.0000023 0.000003 <0.000001 <0.000001 0.0000444 <0.000001 <0.000001 0.0000023 0.0000013Copper mg/L 0.00005 0.0000557 0.0000909 <0.00005 <0.00005 0.000179 <0.00005 0.0000982 0.000142 0.000514 <0.00005 <0.00005 <0.00005 0.000076 <0.00005 <0.00005 0.0000699 0.00011Iron mg/L 0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002Lead mg/L 0.000001 0.0000293 0.0000286 <0.000001 0.0000085 0.0000061 0.0000069 0.0000046 0.00001 0.0000084 0.000138 <0.000001 <0.000001 0.0000157 0.0000028 0.0000072 0.0000055 0.0000101Lithium mg/L 0.00002 0.0000269 <0.00002 <0.00002 <0.00002 0.000391 0.000536 0.00013 0.000125 <0.00002 <0.00002 0.00031 0.000037 0.0000706 <0.00002 <0.00002 0.000163 0.000185Manganese mg/L 0.000003 0.000031 0.0000342 <0.000003 0.0000438 0.0000195 0.0000137 0.0000123 0.0000139 0.0000213 0.000053 0.0000339 <0.000003 0.000241 0.0000086 0.0000192 0.0000283 0.0000176Mercury mg/L 0.00001 <0.00001 0.0000254 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.0000663 0.0000279 <0.00001 <0.00001 <0.00001 <0.00001Mercury (Trace) ng/L 0.6 <0.6 <0.6 1.2 2.3 0.7 <0.6 n/s n/s <0.6 <0.6 <0.6 <0.6 1.2 <0.6 <0.6 <0.6 <0.6Molybdenum mg/L 0.000001 0.000122 0.0000048 <0.000001 0.0000047 0.0000025 0.0000022 0.0000033 0.0000087 0.0000033 0.0000026 0.0000022 0.0000014 0.0000077 <0.000001 <0.000001 0.0000027 0.000011Nickel mg/L 0.000005 0.0000456 0.0000111 <0.000005 0.000006 <0.000005 <0.000005 <0.000005 0.0000158 0.000027 0.000147 0.000124 <0.000005 0.0001 <0.000005 <0.000005 0.0000458 0.0000491Selenium mg/L 0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.000113 <0.0001 <0.0001 <0.0001 <0.0001 0.00012 <0.0001 <0.0001 <0.0001Silver mg/L 0.0000005 <0.0000005 <0.0000005 0.0000009 0.0000012 <0.0000005 <0.0000005 <0.0000005 <0.0000005 0.0000011 <0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005 0.0000009Strontium mg/L 0.000004 0.000358 0.0000324 <0.000004 0.0000265 0.0000158 0.0000184 0.0000573 0.0000435 0.0000257 0.0000096 0.0000175 <0.000004 0.000016 0.0000163 0.0000282 0.0000355 0.0000481Sulphur mg/L 0.2 <0.2 <0.2 <0.2 <0.2 0.282 0.291 0.51 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2Thallium mg/L 0.0000003 0.0000005 0.000001 0.0000006 0.0000043 0.0000037 0.000002 <0.0000003 0.0000018 0.0000014 0.0000022 <0.0000003 <0.0000003 <0.0000003 <0.0000003 <0.0000003 0.0000004 0.0000004Thorium mg/L 0.0000003 0.0000027 <0.0000003 <0.0000003 <0.0000003 0.0000072 0.0000041 0.0000006 0.0000018 0.0000035 0.0000053 0.0000007 <0.0000003 0.0000046 <0.0000003 0.0000007 0.0000007 0.0000011Tin mg/L 0.00003 <0.00003 <0.00003 <0.00003 <0.00003 0.0000519 <0.00003 <0.00003 <0.00003 0.0000822 <0.00003 0.0000772 <0.00003 0.0000353 <0.00003 <0.00003 <0.00003 0.0000569Titanium mg/L 0.00004 0.000055 <0.00004 0.000066 0.000108 0.000107 0.000111 0.000096 0.000239 0.000424 0.000144 0.000145 0.000064 0.000151 0.000153 0.00037 <0.00004 0.00015Uranium mg/L 0.0000001 0.0000002 0.0000001 <0.0000001 0.0000001 0.0000002 0.0000004 0.0000003 0.0000002 0.0000003 0.0000001 0.0000002 <0.0000001 0.0000006 0.0000002 0.0000002 0.0000002 0.0000003Vanadium mg/L 0.000005 0.0000113 0.0000105 <0.00001 0.000018 0.0000718 0.0000532 0.0000188 0.0000117 0.0000542 0.0000456 0.0000053 n/s 0.000017 0.0000341 0.0000409 0.0000211 0.0000396Zinc mg/L 0.0001 0.00034 0.00036 0.000292 0.00031 0.000421 0.000461 0.00025 0.00038 0.000387 0.000405 0.000363 0.000392 0.000373 <0.0001 0.000127 0.000341 0.000266< Value is below detection limitValue is above detection limit but below 5 times Detection LimitExceeds 5 times Detection Limitn/s = not sampled

Page 1 of 2


Table A1.1 Cont'd.

Water Quality Variable Unit Detection Limit

















Physical Variables, Nutrients, Ions, and Organics/HydrocarbonsAlkalinity, Total (as CaCO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Ammonia-N mg/L 0.05 <0.05 <0.05 0.07 <0.05 <0.05 <0.05 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050Bicarbonate (HCO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Biochemical Oxygen Demand mg/L 2 <2 <2 <2 <2 <2 <2 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Calcium (Ca) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50Carbonate (CO3) mg/L 5 <5 <5 <5 <5 <5 <5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Chloride (Cl) mg/L 1 <1 <1 <1 <1 <1 <1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50Color, True T.C.U. 2 <2 <2 <2 <2 <2 <2 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Dissolved Organic Carbon mg/L 1 <1 <1 <1 1 <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Hardness (as CaCO3) mg/L - <1 <1 <1 <1 <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Hydrocarbons, Recoverable (I.R.) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 3.6 <0.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Hydroxide (OH) mg/L 5 <5 <5 <5 <5 <5 <5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10Naphthenic Acids mg/L 1 <1 <1 <1 <1 <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Nitrate (as N) mg/L 0.05 n/s n/s n/s n/s n/s n/s n/s n/s <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050Nitrate+Nitrite-N mg/L 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071Nitrite (as N) mg/L 0.05 n/s n/s n/s n/s n/s n/s n/s n/s <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050Phenols (4AAP) mg/L 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010Phosphorus, Total mg/L 0.001 <0.001 <0.001 0.002 0.001 <0.001 <0.001 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010Phosphorus, Total Dissolved mg/L 0.001 <0.001 <0.001 0.003 0.002 <0.001 <0.001 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010Potassium (K) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50Sodium (Na) mg/L 1 <1 <1 <1 <1 <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Sulfate (SO4) mg/L 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50Sulphide mg/L 0.003 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020Total Dissolved Solids mg/L 5 <5 <5 <5 <5 1570 12 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 5 <5.0 <5.0Total Kjeldahl Nitrogen mg/L 0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20Total Organic Carbon mg/L 1 <1 <1 <1 1 <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Total Suspended Solids mg/L 3 <3 <3 <3 <3 <3 <3 <3.0 <3.0 3 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0Total MetalsAluminum mg/L 0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 n/s <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005Antimony mg/L 0.0000005 0.0000023 0.0000044 0.0000036 0.0000024 0.0000023 0.0000023 <0.0000005 <0.0000005 n/s 0.0000011 0.000001 0.0000009 0.0000007 0.000001 0.0000006 0.0000009Arsenic mg/L 0.000002 0.0000106 0.0000179 0.0000055 0.0000066 0.0000161 0.0000049 <0.000002 <0.000002 n/s <0.000002 <0.000002 0.0000033 <0.000002 <0.000002 0.0000062 0.0000042Barium mg/L 0.000004 0.000013 0.0000229 0.0000188 0.0000195 <0.000004 0.0000072 0.0000174 0.0000174 n/s 0.0000107 0.000012 0.0000048 0.000014 0.0000158 0.000005 0.0000331Beryllium mg/L 0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 0.0000105 0.0000105 n/s <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Bismuth mg/L 0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 0.0000011 <0.000001 <0.000001 n/s <0.000001 0.0000028 0.0000015 <0.000001 <0.000001 <0.000001 0.0000014Boron mg/L 0.00005 0.00093 0.00085 0.0005 0.00067 0.00096 0.00076 0.00021 0.00021 n/s 0.000252 0.000088 <0.00005 0.0000972 0.000654 0.000146 0.000478Cadmium mg/L 0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 n/s <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002 <0.000002Calcium mg/L 0.004 <0.004 <0.004 <0.004 0.0055 <0.004 0.004 0.0054 0.0054 n/s <0.004 0.0046 0.0094 <0.004 <0.004 <0.004 <0.004Chlorine mg/L 0.1 0.284 0.82 0.371 0.264 0.86 <0.1 <0.1 <0.1 n/s <0.1 0.202 <0.1 <0.1 <0.1 <0.1 <0.1Chromium mg/L 0.00004 0.000079 0.0000642 0.000049 <0.00004 0.000036 0.000065 <0.00003 <0.00003 n/s <0.00003 <0.00003 0.0000347 <0.00003 <0.00003 <0.00003 <0.00003Cobalt mg/L 0.000001 <0.000001 0.0000012 <0.000001 <0.000001 <0.000001 0.0000019 <0.000001 <0.000001 n/s <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001 <0.000001Copper mg/L 0.00005 0.0000692 0.0000649 <0.00005 0.000249 0.0000893 <0.00005 <0.00005 <0.00005 n/s <0.00005 <0.00005 <0.00005 <0.00005 <0.00005 <0.00005 <0.00005Iron mg/L 0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 n/s <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002Lead mg/L 0.000001 0.0000017 0.0000032 <0.000001 0.0000192 0.0000078 0.0000096 <0.000001 <0.000001 n/s 0.0000017 <0.000001 <0.000001 0.000001 0.0000098 <0.000001 <0.000001Lithium mg/L 0.00002 <0.00002 0.00018 0.000225 0.000243 0.000024 <0.00002 <0.00002 <0.00002 n/s 0.00008 0.0000408 <0.00002 0.0000793 0.0000675 <0.00002 0.0004Manganese mg/L 0.000003 0.0000379 0.0000102 0.0000116 <0.000003 0.0000054 0.0000041 0.000003 0.000003 n/s <0.000003 0.0000053 <0.000003 <0.000003 <0.000003 <0.000003 0.0000049Mercury mg/L 0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 n/s <0.00001 0.0000295 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Mercury (Trace) ng/L 0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 n/s <0.6 <0.6 <0.6 <0.6 <0.6 <0.6 <0.6Molybdenum mg/L 0.000001 0.0000055 0.0000076 <0.000001 0.0000031 0.0000053 0.0000059 <0.000001 <0.000001 n/s <0.000001 0.0000022 <0.000001 0.0000051 0.0000044 <0.000001 0.0000019Nickel mg/L 0.000005 <0.000005 0.000105 <0.000005 0.0000605 0.0000113 0.0000123 0.000006 0.000006 n/s <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Selenium mg/L 0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.000101 <0.0001 <0.0001 <0.0001 n/s <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001Silver mg/L 0.0000005 0.0000019 0.000001 <0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005 n/s 0.0000022 0.0000588 0.0000005 <0.0000005 <0.0000005 <0.0000005 <0.0000005Strontium mg/L 0.000004 0.0000058 0.0000269 0.0000441 0.0000622 0.0000115 0.0000243 0.0000373 0.0000373 n/s 0.0000067 0.0000295 0.0000294 0.0000077 0.0000153 <0.000004 0.0000112Sulphur mg/L 0.2 0.531 0.734 <0.2 <0.2 <0.2 0.257 <0.2 <0.2 n/s <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2Thallium mg/L 0.0000003 0.0000005 0.0000011 <0.0000003 <0.0000003 0.0000005 0.0000006 <0.0000003 <0.0000003 n/s 0.0000004 0.0000097 0.0000033 <0.0000003 0.0000007 <0.0000003 0.0000034Thorium mg/L 0.0000003 0.0000009 <0.0000003 <0.0000003 <0.0000003 <0.0000003 0.0000003 <0.0000003 <0.0000003 n/s 0.0000005 0.0000044 0.0000047 <0.0000003 <0.0000003 <0.0000003 0.0000007Tin mg/L 0.00003 0.000047 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 n/s <0.00003 <0.00003 <0.00003 0.0000664 <0.00003 <0.00003 <0.00003Titanium mg/L 0.00004 0.000112 0.000265 <0.00004 <0.00004 <0.00004 0.000151 0.000081 0.000081 n/s 0.000068 <0.00004 0.000083 <0.00004 <0.00004 <0.00004 <0.00004Uranium mg/L 0.0000001 0.0000002 0.0000003 0.0000001 <0.0000001 0.0000006 0.0000001 0.0000001 0.0000001 n/s <0.0000001 0.0000003 <0.0000001 0.0000002 0.0000004 0.0000002 0.0000002Vanadium mg/L 0.000005 0.0000256 0.0000285 0.0000161 0.000007 <0.00001 0.0000123 n/s n/s n/s n/s 0.0000091 0.0000156 <0.000005 0.0000112 <0.000005 <0.000005Zinc mg/L 0.0001 0.000307 0.000309 0.000285 0.000249 0.000184 0.000219 0.000244 0.000244 n/s 0.000367 <0.0001 <0.0001 0.0001 <0.0001 0.0001 <0.0001< Value is below detection limitValue is above detection limit but below 5 times Detection LimitExceeds 5 times Detection Limitn/s = not sampled

Page 2 of 2


Table A1.2 Water quality QA/QC results: field splits.

PR5 PR5 Split Relative Percent

DifferenceEM-RC EM-RC Split

Relative Percent

DifferenceMR-10 MR-10

Split

Relative Percent

DifferenceEM3 EM3 Split

Relative Percent

DifferencePR-5 PR-5 Split

Relative Percent

DifferencePR6 PR6 Split

Relative Percent

DifferenceUTPC UTPC Split

Relative Percent

Difference

Alkalinity, Total (as CaCO3) mg/L 5 97 96 1.0 181 181 0.0 115 115 0.0 174 175 0.6 92 92 0.0 77 78 1.3 140 141 0.7Ammonia-N mg/L 0.05 <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/aBicarbonate (HCO3) mg/L 5 118 117 0.9 210 210 0.0 137 137 0.0 213 213 0.0 112 112 0.0 94 95 1.1 171 172 0.6Biochemical Oxygen Demand mg/L 2 <2 <2 n/a <2 <2 n/a <2 <2 n/a <2 <2 n/a <2 <2 n/a <2 <2 n/a <2 <2 n/aCalcium (Ca) mg/L 0.5 26.4 26.3 0.4 48.3 48.7 0.8 38.2 38.3 0.3 49.1 44.3 10.3 22.9 22.9 0.0 21.3 21.1 0.9 36.2 37.1 2.5Carbonate (CO3) mg/L 5 <5 <5 n/a 6 5 18.2 <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/aChloride (Cl) mg/L 1 1 <1 n/a 2 2 0.0 2 2 0.0 4 4 0.0 1 <1 n/a 1 1 0.0 1 1 0.0Color, True T.C.U. 2.5 25 20 22.2 15 15 0.0 30 25 18.2 10 9 10.5 37 38 2.7 n/s n/s n/a 37 39 5.3Conductivity (EC) uS/cm 0.2 199 199 0.0 328 328 0.0 289 289 0.0 355 358 0.8 200 200 0.0 155 155 0.0 269 269 0.0Dissolved Organic Carbon mg/L 1 6 6 0.0 6 6 0.0 8 7 13.3 3 2 40.0 8 8 0.0 8 8 0.0 9 9 0.0Hardness (as CaCO3) mg/L - 91 91 0.0 164 165 0.6 139 139 0.0 160 145 9.8 78 77 1.3 75 75 0.0 123 125 1.6Hydrocarbons, Recoverable (I.R.) mg/L 0.5 n/s n/s n/a n/s n/s n/a <0.5 <0.5 n/a n/s <0.5 n/a <0.5 <0.5 n/a <1 <1 n/a <0.5 <0.5 n/aHydroxide (OH) mg/L 5 <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/aMagnesium (Mg) mg/L 0.1 6.1 6.2 1.6 10.5 10.6 0.9 10.5 10.6 0.9 9.1 8.4 8.0 5 4.9 2.0 5.3 5.3 0.0 7.8 7.9 1.3Naphthenic Acids mg/L 1 n/s n/s n/a n/s n/s n/a <1 <1 n/a <1 <1 n/a <1 <1 n/a <1 <1 n/a <1 <1 n/aNitrate (as N) mg/L n/s n/s n/a 0.6 0.6 0.0 n/s n/s n/a n/s n/s n/a n/s n/s n/a n/s n/s n/a n/s n/s n/aNitrate+Nitrite-N mg/L 0.1 <0.1 <0.1 n/a 0.6 0.1 142.9 0.2 0.2 0.0 0.3 0.3 0.0 <0.1 <0.1 n/a <0.1 <0.1 n/a <0.1 <0.1 n/aNitrite (as N) mg/L n/s n/s n/a <0.05 <0.05 n/a n/s n/s n/a n/s n/s n/a n/s n/s n/a n/s n/s n/a n/s n/s n/apH pH 0.1 8.2 8.2 0.0 8.51 8.5 0.1 8.4 8.4 0.0 7.84 8.1 3.3 8.2 8.2 0.0 8.2 8.1 1.2 8.2 8.2 0.0Phenols (4AAP) mg/L 0.001 n/s n/s n/a n/s n/s n/a <0.001 <0.001 n/a <0.002 <0.002 n/a 0.003 0.001 100.0 0.003 0.002 40.0 0.003 0.003 0.0Phosphorus, Total mg/L 0.001 0.006 0.007 15.4 0.005 0.005 0.0 0.048 0.046 4.3 0.004 0.004 0.0 0.023 0.022 4.4 0.016 0.017 6.1 0.009 0.009 0.0Phosphorus, Total Dissolved mg/L 0.001 0.003 0.003 0.0 0.002 0.003 40.0 0.003 0.003 0.0 0.002 0.002 0.0 0.005 0.004 22.2 0.005 0.005 0.0 0.005 0.004 22.2Potassium (K) mg/L 0.5 0.6 <0.5 n/a 0.8 0.6 28.6 0.6 0.7 15.4 1.3 0.9 36.4 1.7 1.6 6.1 0.8 0.6 28.6 0.7 0.6 15.4Sodium (Na) mg/L 1 12 11 8.7 12 12 0.0 11 11 0.0 21 18 15.4 11 11 0.0 8 7 13.3 12 12 0.0Sulfate (SO4) mg/L 0.5 11.5 11.1 3.5 5.2 5.1 1.9 30.1 30.2 0.3 10.2 8.2 21.7 9.6 9.7 1.0 6.5 6.6 1.5 2.6 2.6 0.0Sulphide mg/L 0.003 <0.003 <0.003 n/a n/s n/s n/a <0.003 <0.003 n/a <0.003 <0.003 n/a <0.003 0.003 n/a <0.002 <0.002 n/a <0.002 <0.002 n/aTotal Dissolved Solids mg/L 5 128 131 2.3 192 189 1.6 171 167 2.4 188 193 2.6 118 116 1.7 116 119 2.6 180 185 2.7Total Kjeldahl Nitrogen mg/L 0.2 <0.2 0.3 n/a <0.2 0.4 n/a 0.4 0.4 0.0 <0.2 <0.2 n/a 0.3 0.4 28.6 0.2 0.3 40.0 0.5 0.3 50.0Total Organic Carbon mg/L 1 6 6 0.0 7 7 0.0 8 7 13.3 3 2 40.0 8 8 0.0 8 8 0.0 9 9 0.0Total Suspended Solids mg/L 3 <3 <3 n/a <3 <3 n/a 79 83 4.9 4 <3 n/a 21 22 4.7 13 9 36.4 <3 3 n/aTotal MetalsAluminum mg/L 0.0005 0.211 0.207 1.9 0.0373 0.0413 10.2 1.87 2.24 18.0 0.0268 0.026 3.0 0.649 0.671 3.3 0.645 0.664 2.9 0.0556 0.0536 3.7Antimony mg/L 0.0000005 0.0000909 0.0000884 2.8 0.0000769 0.0000761 1.0 0.000112 0.000122 8.5 0.000084 0.0000846 0.7 0.0000818 0.0000759 7.5 0.0000847 0.0000851 0.5 0.000058 0.0000597 2.9Arsenic mg/L 0.000002 0.000437 0.000449 2.7 0.000663 0.000664 0.2 0.000709 0.000746 5.1 0.000412 0.000382 7.6 0.000561 0.000587 4.5 0.000574 0.00056 2.5 0.000899 0.000893 0.7Barium mg/L 0.000004 0.0846 0.0828 2.2 0.0882 0.088 0.2 0.0975 0.103 5.5 0.105 0.106 0.9 0.083 0.0832 0.2 0.0761 0.0752 1.2 0.0878 0.0906 3.1Beryllium mg/L 0.000003 0.0000084 0.000009 6.9 0.0000043 0.0000088 68.7 0.0000692 0.0000722 4.2 <0.000003 0.0000037 n/a 0.0000307 0.0000276 10.6 0.0000286 0.0000396 32.3 <0.000003 0.0000056 n/aBismuth mg/L 0.000001 0.0000032 <0.000001 n/a 0.0000026 0.0000015 53.7 0.0000115 0.0000109 5.4 0.000001 <0.000001 n/a 0.0000051 0.000005 2.0 0.0000053 0.0000022 82.7 0.0000015 0.0000021 33.3Boron mg/L 0.00005 0.0111 0.0115 3.5 0.00969 0.0097 0.1 0.0119 0.0114 4.3 0.0116 0.0106 9.0 0.00932 0.0105 11.9 0.0145 0.0125 14.8 0.00902 0.00911 1.0Cadmium mg/L 0.000002 0.0000136 0.0000089 41.8 0.0000083 0.0000052 45.9 0.0000326 0.0000326 0.0 0.0000117 0.0000095 20.8 0.0000167 0.0000126 28.0 0.0000145 0.0000285 65.1 0.0000076 0.000008 5.1Calcium mg/L 0.004 23 22.8 0.9 42.3 42.6 0.7 37.9 39 2.9 48.1 46.5 3.4 23 22.7 1.3 19.6 20.8 5.9 32.4 33 1.8Chlorine mg/L 0.1 0.262 0.766 98.1 1.12 1.17 4.4 0.668 0.758 12.6 3.71 3.54 4.7 0.132 0.138 4.4 <0.1 <0.1 n/a <0.1 0.393 n/aChromium mg/L 0.00004 0.000464 0.000384 18.9 0.000076 0.000117 42.5 0.00255 0.00268 5.0 0.000173 0.000162 6.6 0.000933 0.00103 9.9 0.00112 0.000906 21.1 0.000084 0.000294 111.1Cobalt mg/L 0.000001 0.0000689 0.0000688 0.1 0.0000499 0.0000507 1.6 0.000609 0.000622 2.1 0.000033 0.0000343 3.9 0.000225 0.000224 0.4 0.000247 0.000269 8.5 0.000056 0.0000565 0.9Copper mg/L 0.00005 0.00121 0.00107 12.3 0.000332 0.000447 29.5 0.00212 0.00216 1.9 0.000461 0.000479 3.8 0.00116 0.00114 1.7 0.00172 0.00189 9.4 0.00073 0.000665 9.3Iron mg/L 0.002 0.197 0.192 2.6 0.0618 0.0662 6.9 1.54 1.6 3.8 0.154 0.137 11.7 0.594 0.592 0.3 0.652 0.677 3.8 0.259 0.266 2.7Lead mg/L 0.000001 0.000112 0.0000915 20.1 0.0000354 0.0000417 16.3 0.000862 0.000906 5.0 0.0000306 0.0000336 9.3 0.000284 0.000296 4.1 0.00037 0.000421 12.9 0.0000506 0.0000475 6.3Lithium mg/L 0.00002 0.00299 0.00297 0.7 0.00451 0.00465 3.1 0.00584 0.00537 8.4 0.00397 0.00379 4.6 0.00223 0.00247 10.2 0.00121 0.00069 54.7 0.00224 0.00257 13.7Manganese mg/L 0.000003 0.00524 0.00493 6.1 0.0109 0.0114 4.5 0.0488 0.051 4.4 0.0311 0.0289 7.3 0.0256 0.0247 3.6 0.016 0.0167 4.3 0.0247 0.0252 2.0Mercury mg/L 0.00001 <0.00001 0.0000303 n/a <0.00001 <0.00001 n/a <0.00001 <0.00001 n/a 0.0000105 <0.00001 n/a <0.00001 <0.00001 n/a <0.00001 <0.00001 n/a <0.00001 <0.00001 n/aMercury (Trace) ng/L 0.6 1.1 0.8 31.6 <0.6 <0.6 n/a 3.4 3.4 0.0 1.2 No Result 2.2 1.5 37.8 4.7 1 <0.6 n/aMolybdenum mg/L 0.000001 0.000921 0.000887 3.8 0.000907 0.000909 0.2 0.000858 0.000769 10.9 0.00152 0.00149 2.0 0.000839 0.000837 0.2 0.000586 0.000601 2.5 0.000906 0.000967 6.5Nickel mg/L 0.000005 0.000617 0.000512 18.6 0.00131 0.00141 7.4 0.00179 0.00209 15.5 0.000005 <0.000005 n/a 0.000847 0.00089 5.0 0.00126 0.00144 13.3 0.000263 0.000259 1.5Selenium mg/L 0.0001 0.000237 0.000238 0.4 <0.0001 <0.0001 n/a 0.000959 0.000972 1.3 0.000205 0.000189 8.1 0.000188 0.000162 14.9 0.00021 0.000198 5.9 0.000081 0.000114 33.8Silver mg/L 0.0000005 0.0000049 0.0000031 45.0 0.0000016 0.0000017 6.1 0.0000143 0.0000132 8.0 0.00000056 0.0000008 35.3 0.0000083 0.0000096 14.5 0.0000051 0.0000027 61.5 0.0000063 0.0000017 115.0Strontium mg/L 0.000004 0.133 0.131 1.5 0.299 0.3 0.3 0.224 0.263 16.0 0.367 0.357 2.8 0.125 0.123 1.6 0.109 0.107 1.9 0.193 0.195 1.0Sulphur mg/L 0.0002 3.42 3.63 6.0 2.24 2.22 0.9 10.5 10.7 1.9 2.99 2.59 14.3 2.57 2.97 14.4 1.83 0.587 0.678 14.4Thallium mg/L 0.0000003 0.0000082 0.0000082 0.0 0.0000094 0.000009 4.3 0.0000354 0.0000302 15.9 0.0000083 0.0000073 12.8 0.0000136 0.0000157 14.3 0.0000127 0.0000109 15.3 0.0000025 0.0000044 55.1Thorium mg/L 0.0000003 0.0000105 0.0000092 13.2 0.0000085 0.0000017 133.3 0.000223 0.000162 31.7 0.0000067 0.0000036 60.2 0.0000944 0.0001 5.8 0.000134 0.000126 6.2 0.0000167 0.0000219 26.9Tin mg/L 0.00003 <0.00003 <0.00003 n/a <0.00003 <0.00003 n/a 0.0000422 0.000042 0.5 <0.00003 <0.00003 n/a 0.0000432 <0.00003 n/a <0.00003 <0.00003 n/a <0.00003 <0.00003 n/aTitanium mg/L 0.00004 0.00319 0.0036 12.1 0.00139 0.00125 10.6 0.0319 0.0457 35.6 0.00356 0.00331 7.3 0.015 0.0122 20.6 0.0173 0.0172 0.6 0.00227 0.00191 17.2Uranium mg/L 0.0000001 0.000229 0.000228 0.4 0.000501 0.000497 0.8 0.000459 0.00047 2.4 0.000624 0.000609 2.4 0.000261 0.000271 3.8 0.000244 0.000251 2.8 0.000418 0.000441 5.4Vanadium mg/L 0.000005 0.000829 0.000788 5.1 0.000426 0.000435 2.1 0.00476 0.0052 8.8 0.000219 0.000222 1.4 0.00202 0.00206 2.0 0.00224 0.0022 1.8 0.000339 0.000366 7.7Zinc mg/L 0.0001 0.0142 0.00575 84.7 0.00434 0.00496 13.3 0.00933 0.00647 36.2 0.00201 0.00251 22.1 0.0113 0.00692 48.1 0.00306 0.00423 32.1 0.000531 0.000452 16.1

Variables differ by >20% but one or both concentrations are <5 times the detection limitVariables differ by >20% and concentrations are >5 times the detection limitn/s = not sampledn/a = not applicable

Water Quality Variable

Fall 2006 Winter 2006 Spring 2007 Spring 2008

Units Detection Limit

Summer 2006Spring 2006 Summer 2008

Page 1 of 2


Table A1.2 Cont'd.

PR7 PR7 Split Relative Percent

DifferenceEMWQ-1 EMWQ-1

Split

Relative Percent

DifferenceET-2 ET-2 Split

Relative Percent

DifferenceEMRC EMRC Split

Relative Percent

DifferenceUTPR UTPR Split

Relative Percent

DifferenceUTPR UTPR Split

Relative Percent

DifferenceMCLD-3 EM-RC Split

Relative Percent

Difference

Alkalinity, Total (as CaCO3) mg/L 5 163 164 0.6 179 178 0.6 167 166 0.6 104 106 1.9 85.5 84.4 1.3 77 76.2 1.0 224 227 1.3Ammonia-N mg/L 0.05 <0.05 <0.05 n/a <0.05 <0.05 n/a <0.050 <0.050 0.0 <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.050 <0.05 n/aBicarbonate (HCO3) mg/L 5 197 196 0.5 219 218 0.5 203 203 0.0 126 128 1.6 104 103 1.0 94 93 1.1 274 277 1.1Biochemical Oxygen Demand mg/L 2 <2 <2 n/a <2 <2 n/a <2.0 <2.0 0.0 <2 <2 n/a <2 <2 n/a <2 <2 n/a 2.1 3.1 38.5Calcium (Ca) mg/L 0.5 42.5 43.1 1.4 45.6 44.3 2.9 42.9 43.2 0.7 30.2 29.7 1.7 19.7 19.4 1.5 17.2 17.1 0.6 60.9 61 0.2Carbonate (CO3) mg/L 5 <5 <5 n/a <5 <5 n/a <5.0 <5.0 0.0 <5 <5 n/a <5 <5 n/a <5 <5 n/a <5 <5 n/aChloride (Cl) mg/L 1 <1 <1 n/a 2 2 0.0 1.06 1.62 41.8 0.75 1.1 37.8 <0.5 <0.5 n/a <0.5 <0.5 n/a 38.3 38.3 0.0Color, True T.C.U. 2.5 13 14 7.4 8 7 13.3 4 4 0.0 48 49 2.1 34 34 0.0 28 28 0.0 5 5 0.0Conductivity (EC) uS/cm 0.2 319 319 0.0 354 353 0.3 333 335 0.6 207 207 0.0 166 166 0.0 156 155 0.6 624 626 0.3Dissolved Organic Carbon mg/L 1 4 5 22.2 3 2 40.0 3.3 1.3 87.0 11.9 11.2 6.1 8.7 9.7 10.9 6.8 6.5 4.5 3.7 3.8 2.7Hardness (as CaCO3) mg/L - 151 152 0.7 151 147 2.7 143 144 0.7 99.6 97.4 2.2 62.8 61.8 1.6 54.7 54.9 0.4 215 217 0.9Hydrocarbons, Recoverable (I.R.) mg/L 0.5 <0.5 <0.5 n/a <0.5 <0.5 n/a <1.0 <1.0 0.0 <1 <1 n/a <1 <1 n/a <1 <1 n/a <1 <1 n/aHydroxide (OH) mg/L 5 <5 <5 n/a <5 <5 n/a <5.0 <5.0 0.0 <5 <5 n/a <5 <5 n/a <5 <5 n/a <5.0 <5 n/aMagnesium (Mg) mg/L 0.1 10.8 10.7 0.9 9 8.8 2.2 8.83 8.7 1.5 5.88 5.65 4.0 3.3 3.25 1.5 2.86 2.96 3.4 15.4 15.6 1.3Naphthenic Acids mg/L 1 1 1 0.0 <1 <1 n/a <1.0 <1.0 0.0 <1 <1 n/a <1 <1 n/a <1 <1 n/a <1 <1 n/aNitrate (as N) mg/L n/s n/s n/a n/s n/s n/a n/s n/s n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a 0.301 0.3 0.3Nitrate+Nitrite-N mg/L 0.1 <0.1 0.2 n/a 1 0.9 10.5 0.357 0.375 4.9 <0.071 <0.071 n/a <0.071 <0.071 n/a <0.071 <0.071 n/a 0.301 0.3 0.3Nitrite (as N) mg/L n/s n/s n/a n/s n/s n/a n/s n/s n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.05 <0.05 n/a <0.050 <0.05 n/apH pH 0.1 8.3 8.3 0.0 8.2 8.2 0.0 8.22 8.21 0.1 8.3 8.31 0.1 7.75 7.72 0.4 8.01 7.93 1.0 8.16 8.16 0.0Phenols (4AAP) mg/L 0.001 0.002 0.001 66.7 <0.001 <0.001 n/a <0.0010 <0.0010 0.0 0.0035 0.0031 12.1 0.0033 0.0126 117.0 0.0016 0.0013 20.7 0.0017 0.0017 n/aPhosphorus, Total mg/L 0.001 0.004 0.003 28.6 0.002 0.002 0.0 0.0026 0.004 42.4 0.0111 0.0095 15.5 0.0037 0.0055 39.1 0.0045 0.0047 4.3 0.0053 0.0059 10.7Phosphorus, Total Dissolved mg/L 0.001 0.002 0.002 0.0 <0.001 <0.001 n/a 0.0012 0.0025 70.3 0.0024 0.0018 28.6 0.002 0.0033 49.1 0.0014 0.0028 66.7 0.0018 0.0017 n/aPotassium (K) mg/L 0.5 0.6 0.6 0.0 1 1 0.0 0.75 0.82 8.9 0.6 0.5 18.2 <0.5 <0.5 n/a <0.5 <0.5 n/a 1.32 1.29 2.3Sodium (Na) mg/L 1 14 14 0.0 20 20 0.0 19.2 18.8 2.1 6.6 6.4 3.1 14.3 14 2.1 13.1 12.9 1.5 46.6 46.1 1.1Sulfate (SO4) mg/L 0.5 13 13.2 1.5 10.4 10.1 2.9 11.4 12.1 6.0 3.58 4.72 27.5 0.7 0.58 18.8 1.41 1.15 20.3 56.7 56.7 0.0Sulphide mg/L 0.003 0.002 <0.002 n/a <0.002 <0.002 n/a <0.0020 <0.0020 0.0 <0.002 <0.002 n/a 0.0033 0.0023 35.7 <0.002 <0.002 n/a <0.0020 <0.002 n/aTotal Dissolved Solids mg/L 5 193 195 1.0 210 223 6.0 208 196 5.9 139 145 4.2 111 115 3.5 106 105 0.9 368 369 0.3Total Kjeldahl Nitrogen mg/L 0.2 <0.20 0.2 0.0 0.2 0.3 40.0 <0.20 0.27 29.8 0.67 0.64 4.6 0.54 0.99 58.8 0.24 0.25 4.1 <0.20 <0.2 n/aTotal Organic Carbon mg/L 1 4 4 0.0 2 2 0.0 1.7 1.5 12.5 12 11.9 0.8 13.8 8.6 46.4 6.9 7 1.4 3.8 3.8 0.0Total Suspended Solids mg/L 3 <3 <3 n/a <3 <3 n/a <3.0 <3.0 0.0 8 4 66.7 3 3 0.0 <3 <3 n/a <3.0 5 n/aTotal MetalsAluminum mg/L 0.0005 0.0172 0.021 19.9 0.0326 0.0307 6.0 0.0488 0.0425 13.8 0.497 0.467 6.2 0.0251 0.0262 4.3 0.0158 0.0111 34.9 0.0221 0.023 4.0Antimony mg/L 0.0000005 0.0000843 0.0000854 1.3 0.0000868 0.0000845 2.7 0.0000577 0.0000557 3.5 0.0000747 0.0000708 5.4 0.0000225 0.0000282 22.5 0.0000258 0.0000245 5.2 0.000101 0.0000972 3.8Arsenic mg/L 0.000002 0.000322 0.000327 1.5 0.000327 0.000293 11.0 0.000369 0.000339 8.5 0.000596 0.000586 1.7 0.000934 0.000989 5.7 0.000536 0.000531 0.9 0.000297 0.000293 1.4Barium mg/L 0.000004 0.118 0.122 3.3 0.12 0.12 0.0 0.115 0.116 0.9 0.0595 0.0592 0.5 0.0447 0.0449 0.4 0.0314 0.0303 3.6 0.118 0.12 1.7Beryllium mg/L 0.000003 <0.000003 <0.000003 n/a <0.000003 <0.000003 n/a 0.0000059 0.000003 65.2 0.0000132 0.0000154 15.4 <0.000003 <0.000003 n/a <0.000003 <0.000003 n/a <0.000003 <0.000003 n/aBismuth mg/L 0.000001 <0.000001 <0.000001 n/a 0.0000024 0.0000065 92.1 0.0000016 0.000001 46.2 <0.00001 <0.00001 n/a 0.0000015 <0.000001 n/a 0.000001 <0.000001 0.0 <0.000001 <0.000001 n/aBoron mg/L 0.00005 0.0109 0.011 0.9 0.0138 0.0137 0.7 0.011 0.0113 2.7 0.00724 0.00666 8.3 0.00903 0.00838 7.5 0.00981 0.00818 18.1 0.0122 0.0115 5.9Cadmium mg/L 0.000002 0.0000059 0.0000071 18.5 0.0000049 0.0000049 0.0 0.0000036 0.0000038 5.4 0.0000083 0.0000087 4.7 <0.000002 <0.000002 n/a <0.000002 <0.000002 n/a 0.0000324 0.0000309 4.7Calcium mg/L 0.004 39.8 41.3 3.7 43.1 42.8 0.7 36.7 36.2 1.4 20.6 20.6 0.0 15.4 15.4 0.0 18.1 17.9 1.1 60.6 59.9 1.2Chlorine mg/L 0.1 0.666 0.633 5.1 2.08 2.07 0.5 0.914 0.778 16.1 0.508 0.517 1.8 0.116 <0.1 n/a 0.746 0.207 113.1 33.6 33.2 1.2Chromium mg/L 0.00004 0.000253 0.000108 80.3 0.000167 0.000138 19.0 0.00008 0.0000322 85.2 0.000449 0.000418 7.2 0.0000944 0.0000705 29.0 0.0000449 <0.00003 n/a 0.0000777 0.0000414 61.0Cobalt mg/L 0.000001 0.0000122 0.0000113 7.7 0.0000286 0.0000272 5.0 0.0000257 0.0000243 5.6 0.000117 0.000116 0.9 0.000146 0.000151 3.4 0.0000751 0.0000722 3.9 0.000104 0.000109 4.7Copper mg/L 0.00005 0.000593 0.000603 1.7 0.000775 0.000403 63.2 0.000312 0.000324 3.8 0.00112 0.0046 121.7 0.000131 0.000378 97.1 0.000173 0.000146 16.9 0.000623 0.000747 18.1Iron mg/L 0.002 0.045 0.0455 1.1 0.0677 0.0648 4.4 0.108 0.103 4.7 0.313 0.318 1.6 0.418 0.42 0.5 0.336 0.322 4.3 0.0791 0.0792 0.1Lead mg/L 0.000001 0.0000134 0.0000134 0.0 0.0000326 0.000022 38.8 0.0000765 0.000038 67.2 0.000133 0.000129 3.1 0.0000095 0.0000084 12.3 0.0000274 0.0000054 134.1 0.0000725 0.0000464 43.9Lithium mg/L 0.00002 0.00325 0.00309 5.0 0.00337 0.00325 3.6 0.00221 0.00224 1.3 0.00217 0.00213 1.9 0.00155 0.00138 11.6 0.00136 0.00208 41.9 0.0111 0.009 20.9Manganese mg/L 0.000003 0.0029 0.00304 4.7 0.0156 0.0149 4.6 0.00862 0.00838 2.8 0.0109 0.011 0.9 0.163 0.166 1.8 0.0772 0.075 2.9 0.0117 0.0116 0.9Mercury mg/L 0.00001 <0.00001 <0.00001 n/a <0.00001 <0.00001 n/a 0.0000108 0.00001 7.7 <0.00005 <0.00005 n/a 0.0000108 <0.00001 n/a <0.6 <0.6 n/a <0.00001 <0.00001 n/aMercury (Trace) ng/L 0.6 <0.6 <0.6 n/a <0.6 <0.6 n/a 0.6 0.6 0.0 1.8 1.7 5.7 <0.6 <0.6 n/a <0.00001 <0.00001 n/a <0.6 <0.6 n/aMolybdenum mg/L 0.000001 0.00116 0.00117 0.9 0.00124 0.00122 1.6 0.000952 0.000935 1.8 0.000464 0.000452 2.6 0.00028 0.000291 3.9 0.000223 0.000215 3.7 0.00137 0.00136 0.7Nickel mg/L 0.000005 <0.000005 <0.000005 n/a <0.000005 <0.000005 n/a 0.0000126 0.000005 86.4 0.000824 0.000858 4.0 0.00026 0.000271 4.1 0.0000996 0.0000447 76.1 <0.000005 <0.000005 n/aSelenium mg/L 0.0001 0.000099 0.00021 71.8 0.00032 0.00037 14.5 0.000339 0.000235 36.2 <0.0002 <0.0002 n/a <0.0001 <0.0001 n/a <0.0001 <0.0001 n/a 0.00184 0.00193 4.8Silver mg/L 0.0000005 0.0000121 0.0000034 112.3 <0.0000005 <0.0000005 n/a 0.0000117 0.000011 6.2 0.0000094 0.0000077 19.9 0.0000026 0.000001 88.9 0.0000125 <0.0000005 n/a 0.0000027 <0.0000005 n/aStrontium mg/L 0.000004 0.188 0.194 3.1 0.417 0.413 1.0 0.277 0.276 0.4 0.175 0.168 4.1 0.129 0.129 0.0 0.112 0.11 1.8 0.427 0.428 0.2Sulphur mg/L 0.0002 5.09 5.38 5.5 2.99 2.92 2.4 3.37 3.2 5.2 1.28 1.29 0.8 <0.2 <0.2 n/a 0.372 0.239 43.5 18.5 18.7 1.1Thallium mg/L 0.0000003 0.0000046 0.0000049 6.3 0.0000038 0.0000062 48.0 0.0000028 0.0000022 24.0 0.0000084 0.0000074 12.7 0.0000034 0.0000018 61.5 <0.0000003 0.0000016 n/a 0.0000008 0.0000017 72.0Thorium mg/L 0.0000003 0.0000032 0.0000038 17.1 0.0000056 0.0000052 7.4 0.0000054 0.0000055 1.8 0.0000526 0.00005 5.1 0.0000106 0.000009 16.3 0.0000015 0.0000016 6.5 0.0000035 0.0000031 12.1Tin mg/L 0.00003 <0.00003 <0.00003 n/a <0.00003 <0.00003 n/a 0.00003 0.00003 0.0 <0.00007 <0.00007 n/a <0.00003 <0.00003 n/a <0.00003 <0.00003 n/a 0.000289 0.000277 4.2Titanium mg/L 0.00004 0.00105 0.00104 1.0 0.00208 0.00151 31.8 0.00193 0.00217 11.7 0.00842 0.00741 12.8 0.00109 0.0012 9.6 0.00107 0.000963 10.5 0.000937 0.000999 6.4Uranium mg/L 0.0000001 0.000475 0.000494 3.9 0.000691 0.000688 0.4 0.00053 0.000529 0.2 0.000245 0.000251 2.4 0.0000117 0.0000123 5.0 0.0000166 0.0000166 0.0 0.000887 0.000894 0.8Vanadium mg/L 0.000005 0.000174 0.000187 7.2 0.000221 0.000228 3.1 0.000206 0.000183 11.8 0.00095 0.000888 6.7 0.000087 0.000084 3.5 0.0000538 0.000047 13.5 0.000105 0.0000906 14.7Zinc mg/L 0.0001 0.00138 0.00156 12.2 0.000884 0.000526 50.8 0.000453 0.000396 13.4 0.00154 0.00157 1.9 0.000298 0.000413 32.3 0.000376 0.000363 3.5 0.00533 0.00509 4.6

Variables differ by >20% but one or both concentrations are <5 times the detection limitVariables differ by >20% and concentrations are >5 times the detection limitn/s = not sampledn/a = not applicable

Winter 2010Fall 2008 Winter 2009

Water Quality Variable Units Detection Limit

Winter 2010Summer 2010 Fall 2010Spring 2010

Page 2 of 2


Appendix A2

Compilation of

Water Quality Data Used in the Water Quality Baseline

Surface Water Quality Report A2-i Hatfield Robb Trend Project

TABLE OF CONTENTS

A2.0 COMPILATION OF WATER QUALITY DATA USED IN WATER QUALITY BASELINE ....................................................................... 2-1

LIST OF TABLES

Table A2.2 Water quality data for watercourses in the Local Study Area that are downstream of existing mines. ............................................................ 2-2

Table A2.3 Water quality data for watercourses in the Local Study Area that are not downstream of existing mines. .................................................... 2-10

Table A2.4 Water quality data for Regional Study Area watercourses. ..................... 2-18


A2.0 COMPILATION OF WATER QUALITY DATA USED IN WATER QUALITY BASELINE

Locations of water quality sampling sites are found in Table 5 and Figure 2 of the main report.

Water quality data for the water quality baseline and surface water quality modeling from all years and seasons are presented in the following tables. Data and associated modeling are divided and presented as follows:

Local Study Area watercourses downstream of existing mines;

Local Study Area watercourses not downstream of existing mines; and

Regional Study Area watercourses.

The water quality guidelines used in the tables in this Appendix are provided in Table 4 of the main report.

Table A2.1 Water quality data for impacted watercourses within the Local Study Area.

HPC HPC HPC HPC HPC ET1 ET1 ET1 ET1 ET1 ET1 ET11997 1997 1998 1998 2006 2002 2003 2005 2008 2008 2009 2009

Summer Fall Spring Summer Winter Fall Fall Fall Spring Summer Summer WinterConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 169 208 145 148 1263 - - - 89 136 - 152Color, True T.C.U. - 45 19 30 - 7 15 15 75 - 6 - 4Conductivity (EC) uS/cm - 311 360 283 290 503 - - - 192 306 - 316Dissolved Organic Carbon mg/L - - - - - 4 - - - 5 2 3.1 2Dissolved Oxygen mg/L 5 9.3 11.8 11.1 9.3 - 9.2 9 - 10.2 - 10.3 12.16Hardness (as CaCO3) mg/L - 145 180 121 127 225 107 122 121 81 120 - 131pH (high) pH 6.5-9 8.32 8.17 8.15 8.28 8.2 8.1 7.7 8.1 8.1 8.3 - 8.2Temperature oC - - - - - - - - 6.5 6.8 9 0.11Total Dissolved Solids mg/L - 180 225 37.5 165 289 150 90 190 126 193 161 206Total Organic Carbon mg/L - 10.1 6.6 9.1 9.3 3 - - - 5 2 3.1 2Total Suspended Solids mg/L 3 4 15 34 <3.0 16 <3.0 12.4 17 3 7 <3.0Turbidity NTU - - - - - - - - 8.32 0.01 2.3 1.4General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - 0.5 - - - - 0.8 - 0.9Oil and Grease mg/L - - - - - - - - - 0.05 - 0.05 -Naphthenic Acids mg/L - - - - - <1.0 - - - <1.0 4 <1.0 <1.0Phenols (4AAP) mg/L 0.004 <0.001 0.001 <0.001 0.001 0.001 <0.001 <0.001 <0.001 0.002 0.026 <0.001 <0.001Major IonsBicarbonate (HCO3) mg/L - 206 254 177 181 321 - - - 109 166 - 186Calcium (Ca) mg/L - 44.1 54.1 36.9 39.3 67.2 31.5 36.6 33.4 24.7 35.5 - 39.3Carbonate (CO3) mg/L - - - - - <5.0 - - - <5.0 <5.0 - <5.0Chloride (Cl) mg/L 230 0.5 0.5 0.5 0.5 1 - - - 2 2 - 1Hydroxide (OH) mg/L - - - - - <5.0 - - - <5.0 <5.0 - <5.0Magnesium (Mg) mg/L - 8.5 10.8 7.1 7.1 14 6.5 5.8 6.6 4.8 7.6 - 8Potassium (K) mg/L - <1.0 2.2 - 1.15 1.1 0.8 0.6 1 <0.5 0.8 - 1Sodium (Na) mg/L - 18 23.3 17.6 18.1 29 13 11 16 9 18 - 21Sulfate (SO4) mg/L 50 6.9 9.2 6.1 9.8 11.4 6.5 7.1 14 11.7 19.9 - 17.1Sulphide mg/L 0.002 - - - - <0.002 0.038 <0.002 <0.002 0.002 <0.002 <0.002 <0.002Nutrients and BODAmmonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Biochemical Oxygen Demand mg/L - - - - - <2.0 - - - <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - - - <0.1 <0.1 0.86 - - - -Nitrate+Nitrite-N mg/L - 0.05 0.05 0.18 0.07 <0.1 - - - 0.4 0.3 - 0.6Nitrite (as N) mg/L 0.06 - - - - - <0.05 <0.05 <0.05 - - - -Phosphorus, Total mg/L 0.05 <0.05 <0.05 <0.05 0.08 0.004 0.01 0.08 0.01 0.025 0.007 0.0098 0.006Phosphorus, Total Dissolved mg/L 0.05 - - - - 0.001 - - - 0.005 0.003 0.0027 0.004Total Kjeldahl Nitrogen mg/L 1 0.19 0.26 0.22 0.25 <0.2 - - - 0.2 <0.2 - <0.2Total MetalsAluminum (Al) mg/L 0.1 0.278 0.188 1.06 0.632 0.0943 0.71 0.26 3.59 0.909 0.0577 0.348 0.0516Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 <0.0002 0.0000565 <0.0002 <0.0002 0.0004 0.000108 0.000102 0.000094 0.0000914Arsenic (As) mg/L 0.005 - - - - 0.000571 <0.001 <0.001 <0.001 0.000574 0.000483 0.000562 0.000497Barium (Ba) mg/L 5 0.0872 0.0974 0.0852 0.0871 0.13 0.105 0.0971 0.12 0.0837 0.103 0.1 0.119Beryllium (Be) mg/L 0.0005 0.0005 0.0005 0.0005 <0.00001 <0.001 <0.001 <0.001 0.0000272 <0.00001 0.0000157 <0.00001Bismuth (Bi) mg/L <0.007 <0.007 <0.007 <0.007 <0.00001 <0.0001 <0.0001 <0.0001 0.0000138 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 <0.02 0.0184 <0.02 <0.02 0.02 0.00912 0.0122 0.0127 0.0124Cadmium (Cd) mg/L calculated - - - - 0.0000086 - - - 0.0000235 0.0000083 0.0000085 0.0000084Chlorine (Cl) mg/L - - - - - <0.3 - - - 0.706 0.968 1.18 0.927Chromium (Cr) mg/L 0.001 <0.0008 0.0009 <0.0008 0.0016 <0.0003 <0.0008 <0.0008 0.0024 0.00123 <0.0003 0.000631 <0.0003Cobalt (Co) mg/L 0.11 <0.0007 <0.0007 <0.0007 <0.0007 0.0000767 0.0003 <0.0002 0.0005 0.000356 0.00005 0.000113 0.00005Copper (Cu) mg/L calculated 0.001 <0.001 <0.001 0.002 0.000575 0.001 0.001 0.003 0.00216 0.000476 0.000552 0.000429Iron (Fe) mg/L 0.3 0.29 0.26 0.888 0.65 0.191 0.668 0.236 1.49 0.873 0.0735 0.266 0.0721Lead (Pb) mg/L calculated <0.002 <0.002 <0.002 <0.002 0.0000714 0.0003 <0.0001 0.0011 0.000492 0.0000442 0.000151 0.0000416Lithium (Li) mg/L 0.87 0.00588 0.00656 0.00761 0.005 0.00692 - - - 0.00199 0.00233 0.00301 0.00473Manganese (Mn) mg/L - 0.018 0.05 0.0437 0.026 0.0608 0.034 0.014 0.036 0.024 0.016 0.0172 0.0212Mercury (Hg)-Trace ng/L 5 - - - - <1.2 - - - 6.2 <1.2 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.002 0.001 0.001 0.002 0.00118 0.001 0.0009 0.0016 0.000741 0.00148 0.00107 0.00128Nickel (Ni) mg/L calculated 0.001 0.001 <0.001 0.001 <0.00006 0.0013 0.0003 0.0017 0.00473 0.000079 0.000175 <0.00006


Page 1 of 8

Table A2.1 Cont'd.

HPC HPC HPC HPC HPC ET1 ET1 ET1 ET1 ET1 ET1 ET11997 1997 1998 1998 2006 2002 2003 2005 2008 2008 2009 2009

Summer Fall Spring Summer Winter Fall Fall Fall Spring Summer Summer WinterSelenium (Se) mg/L 0.001 - - - - <0.0003 <0.0008 <0.0008 <0.0008 0.000476 0.000555 0.000466 0.001Silver (Ag) mg/L 0.0001 - - - - <0.000005 <0.0001 <0.0001 0.0002 0.0000062 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - 0.231 0.26 0.179 0.195 0.388 0.217 0.000217 0.278 0.162 0.252 0.248 0.324Sulphur mg/L - 2.18 - - 2.91 3.47 - - - 4.86 6.4 6.12 4.85Thallium (Tl) mg/L 0.0008 - - - - <0.000003 <0.0001 <0.0001 <0.0001 0.0000169 0.0000041 0.0000079 0.0000034Thorium mg/L - - - - - <0.00003 - - - 0.000181 <0.00003 0.0000567 <0.00003Tin (Sn) mg/L - <0.003 0.005 <0.003 <0.003 <0.00007 <0.0004 <0.0004 <0.0004 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.0074 0.005 0.03 0.0182 0.00496 0.012 0.007 0.064 0.0191 0.00227 0.00794 0.00207Uranium (U) mg/L 0.015 - - - - 0.0013 0.0004 0.0002 0.0006 0.000365 0.000544 0.000455 0.000575Vanadium (V) mg/L - <0.001 <0.001 0.002 <0.001 0.000288 0.002 0.0007 0.0039 0.0022 0.000359 0.000948 0.000352Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 0.013 0.01 0.014 0.00789 0.00326 0.00321 0.00417Dissolved MetalsAluminum (Al) mg/L 0.1 - - - - 0.00114 - - - 0.0806 0.00405 0.0106 0.0021Antimony (Sb) mg/L - - - - - 0.0000559 - - - 0.000107 0.000101 0.0000931 0.0000905Arsenic (As) mg/L 0.005 - - - - 0.000444 - - - 0.000333 0.000413 0.000405 0.00042Barium (Ba) mg/L 5 - - - - 0.129 - - - 0.0672 0.0896 0.0863 0.1Beryllium (Be) mg/L - - - - <0.00001 - - - <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L - - - - <0.00001 - - - <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 - - - - 0.0168 - - - 0.00829 0.0105 0.0118 0.0116Cadmium (Cd) mg/L calculated - - - - <0.000006 - - - 0.0000077 0.0000082 <0.000006 <0.000006Chlorine (Cl) mg/L - - - - - <0.3 - - - 0.699 0.94 1.15 0.815Chromium (Cr) mg/L 0.001 - - - - <0.0003 - - - <0.0003 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 - - - - 0.0000436 - - - 0.0000613 0.0000267 0.000015 0.0000132Copper (Cu) mg/L calculated - - - - 0.000569 - - - 0.00214 0.000471 0.000389 0.000425Iron (Fe) mg/L 0.3 - - - - <0.004 - - - 0.0826 <0.004 <0.004 <0.004Lead (Pb) mg/L calculated - - - - 0.0000076 - - - 0.0000547 0.000031 0.0000103 0.0000412Lithium (Li) mg/L 0.87 - - - - 0.00685 - - - 0.00142 0.00216 0.00283 0.00415Manganese (Mn) mg/L - - - - - 0.0545 - - - 0.00647 0.0114 0.00488 0.0142Molybdenum (Mo) mg/L 0.073 - - - - 0.00118 - - - 0.000734 0.00132 0.00103 0.00121Nickel (Ni) mg/L calculated - - - - <0.00006 - - - <0.00006 0.000078 <0.00006 <0.00006Selenium (Se) mg/L 0.001 - - - - <0.0003 - - - 0.000471 0.00053 0.000456 0.000926Silver (Ag) mg/L 0.0001 - - - - <0.000005 - - - <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - - - - - 0.388 - - - 0.161 0.233 0.23 0.285Sulphur mg/L - - - - - 3.17 - - - 4.57 5.71 5.38 4.03Thallium (Tl) mg/L 0.0008 - - - - <0.000003 - - - 0.000005 <0.000003 0.0000032 <0.000003Thorium mg/L - - - - - <0.00003 - - - 0.0000647 <0.00003 <0.00003 <0.00003Tin (Sn) mg/L - - - - - <0.00007 - - - <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 - - - - 0.00357 - - - 0.00417 0.000794 0.00142 0.000986Uranium (U) mg/L 0.015 - - - - <0.000003 - - - <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L - - - - - 0.0001 - - - 0.0001 0.0001 0.0001 0.0001Zinc (Zn) mg/L 0.030 - - - - <0.003 - - - 0.00508 0.00317 <0.003 0.00413Calculated guideline values

Cadmium (mg/L) 0.000046 0.000055 0.000039 0.000041 0.000067 0.000035 0.000039 0.000039 0.000028 0.000039 0.000039 0.000042Copper (mg/L) 0.003248 0.003908 0.002783 0.002901 0.004729 0.002506 0.002803 0.002783 0.001975 0.002763 0.002763 0.002978

Lead (mg/L) 0.005106 0.006724 0.004055 0.004313 0.008932 0.003468 0.004098 0.004055 0.002433 0.004013 0.004013 0.004487nickel (mg/L) 0.126763 0.149403 0.110476 0.114615 0.177015 0.100620 0.111169 0.110476 0.081433 0.109782 0.109782 0.117349


Page 2 of 8

Table A2.1 Cont'd.

ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ER-WQ-0.5 ER-WQ-1 ER-WQ-1 ER-WQ-1 ER-WQ-2 ER-WQ-2 ER-WQ-22005 2005 2005 2006 2007 2008 2005 2005 2005 2005 2005 2005 2005

Spring Summer Fall Winter Spring Winter Fall Spring Summer Fall Spring Summer FallConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 1170 184 101 1170 81 239 83 100 120 74 104 135 83Color, True T.C.U. - 11 - - 11 70 10 - - - - - - -Conductivity (EC) uS/cm - 325 - - 325 161 446 - - - - - - -Dissolved Organic Carbon mg/L - 4 - - 4 14 2 - - - - - - -Dissolved Oxygen mg/L 5 13.2 - - 13.2 9.63 11.16 - - - - - - -Hardness (as CaCO3) mg/L - 135 130 88 135 67 163 78 87 97 73 88 100 76pH (high) pH 6.5-9 8.2 8.22 8.04 8.2 8.1 8.2 8.02 8.21 8.29 7.95 8.15 8.39 8.09Temperature oC - - - 0.14 9.45 0.05 - - - - - - -Total Dissolved Solids mg/L - 184 178 100 184 128 270 140 107 127 147 111 136 90Total Organic Carbon mg/L - 4 - - 4 14 2 - - - - - - -Total Suspended Solids mg/L <3.0 4 7 <3.0 167 <3.0 28 16 17 40 30 3 19Turbidity NTU - - - - 71.3 0.47 - - - - - - -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - 0.5 - - 0.5 0.5 0.5 - - - - - - -Oil and Grease mg/L - - - - - - - - - - - - - -Naphthenic Acids mg/L - <1.0 - - <1.0 <1.0 <1.0 - - - - - - -Phenols (4AAP) mg/L 0.004 0.001 - - 0.001 0.002 0.001 - - - - - - -Major IonsBicarbonate (HCO3) mg/L - 207 225 123 207 99 291 102 122 146 90 126 165 101Calcium (Ca) mg/L - 42 40.2 27.7 42 21.9 49.6 23.8 32.4 29.4 22.5 26.3 31.6 23.7Carbonate (CO3) mg/L - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 0.5 - - 0.5 1 0.5 - - - - - - -Hydroxide (OH) mg/L - - - - - <5.0 <5.0 - - - - - - -Magnesium (Mg) mg/L - 7.3 7.2 4.6 7.3 2.9 9.6 4.6 6.5 5.6 4 5.1 6 4Potassium (K) mg/L - 0.8 0.7 0.6 0.8 1.4 0.7 0.7 0.6 0.8 0.6 0.6 0.7 0.8Sodium (Na) mg/L - 22 15.8 8.9 22 8 41 6.9 8.8 9.9 6.6 9.1 10.6 8.1Sulfate (SO4) mg/L 50 3.6 3.1 2 3.6 1.5 5.1 5.2 4.9 6.1 4.5 4.3 4 3.7Sulphide mg/L 0.002 <0.002 - - <0.002 0.004 <0.002 - - - - - - -Nutrients and BODAmmonia-N mg/L 1.04 <0.05 - - <0.05 0.27 <0.05 - - - - - - -Biochemical Oxygen Demand mg/L - - - - - <2.0 <2.0 - - - - - - -Nitrate (as N) mg/L 13 - - - - - - - - - - - - -Nitrate+Nitrite-N mg/L - 0.2 <0.1 <0.1 0.2 0.1 0.2 <0.1 <0.1 0.15 <0.1 <0.1 <0.1 0.16Nitrite (as N) mg/L 0.06 - <0.05 <0.05 - - - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Phosphorus, Total mg/L 0.05 0.004 0.05 0.2 0.004 0.123 0.006 0.1 0.1 0.1 0.2 0.1 0.05 0.2Phosphorus, Total Dissolved mg/L 0.05 0.002 - - 0.002 0.01 0.004 - - - - - - -Total Kjeldahl Nitrogen mg/L 1 <0.2 0.25 0.34 <0.2 0.8 <0.2 0.25 <0.2 2.13 0.42 0.21 <0.2 0.32Total MetalsAluminum (Al) mg/L 0.1 0.0604 0.095 0.293 0.0604 4.39 0.049 0.704 0.675 1.6 1.47 0.934 0.324 1.36Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 0.0000589 0.000146 0.0000684 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Arsenic (As) mg/L 0.005 <0.001 <0.001 <0.001 0.000244 0.00145 0.000319 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001Barium (Ba) mg/L 5 0.0681 0.072 0.055 0.0681 0.125 0.0848 0.073 0.078 0.096 0.077 0.078 0.076 0.076Beryllium (Be) mg/L <0.001 <0.001 <0.001 <0.00001 0.000142 <0.00001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001Bismuth (Bi) mg/L <0.0001 <0.0001 <0.0001 <0.00001 0.0000303 <0.00001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 0.0128 0.00842 0.0212 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02Cadmium (Cd) mg/L calculated - - - <0.000006 0.0000687 0.0000074 - - - - - - -Chlorine (Cl) mg/L - - - - - <0.3 <0.3 - - - - - - -Chromium (Cr) mg/L 0.001 <0.0008 <0.0008 <0.0008 <0.0003 0.00554 <0.0003 <0.0008 0.0009 0.0023 0.0016 0.0012 <0.0008 0.0018Cobalt (Co) mg/L 0.11 <0.0002 <0.0002 <0.0002 0.00005 0.00155 0.00005 0.0003 0.0003 0.0005 0.0006 0.0004 <0.0002 0.0005Copper (Cu) mg/L calculated <0.001 - - 0.000596 0.00456 0.000653 - - - - - - -Iron (Fe) mg/L 0.3 0.0424 0.1 0.4 0.0424 3.72 0.0378 1.4 0.7 1.3 1.5 1 0.4 1.6Lead (Pb) mg/L calculated <0.0001 0.0002 0.0003 0.0000256 0.00229 0.0000225 0.0004 0.0004 0.0006 0.0008 0.0006 <0.0001 0.0007Lithium (Li) mg/L 0.87 0.00436 0.004 0.0015 0.00436 0.00291 0.00529 0.0015 0.0015 0.004 0.0015 0.0015 0.004 0.0015Manganese (Mn) mg/L - 0.00381 0.008 0.012 0.00381 0.112 0.00933 0.036 0.023 0.028 0.046 0.036 0.024 0.042Mercury (Hg)-Trace ng/L 5 <1.2 - - <1.2 16 <1.2 - - - - - - -Molybdenum (Mo) mg/L 0.073 0.000705 0.0005 0.0005 0.000705 0.000293 0.00162 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005Nickel (Ni) mg/L calculated 0.0005 0.0009 0.001 <0.00006 0.00493 0.000113 0.0005 0.0014 0.0018 <0.0002 0.002 0.00025 0.0024


Page 3 of 8

Table A2.1 Cont'd.

ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ERT1-WQ ER-WQ-0.5 ER-WQ-1 ER-WQ-1 ER-WQ-1 ER-WQ-2 ER-WQ-2 ER-WQ-22005 2005 2005 2006 2007 2008 2005 2005 2005 2005 2005 2005 2005

Spring Summer Fall Winter Spring Winter Fall Spring Summer Fall Spring Summer FallSelenium (Se) mg/L 0.001 <0.0008 <0.0008 <0.0008 <0.0003 0.000214 <0.0002 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008Silver (Ag) mg/L 0.0001 <0.0001 <0.0001 <0.0001 <0.000005 0.0000463 <0.000005 <0.0001 <0.0001 <0.0001 <0.0001 0.0005 0.0005 0.0001Strontium (Sr) mg/L - <0.000008 0.222 0.163 0.233 0.117 0.238 0.151 0.174 0.204 0.134 0.18 0.218 0.161Sulphur mg/L - <0.6 1 0.7 0.62 <0.6 1.13 1.6 1.6 2 1.5 1.5 1.4 1.2Thallium (Tl) mg/L 0.0008 <0.0001 <0.0001 <0.0001 <0.000003 0.0000768 0.000004 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001Thorium mg/L - - - - <0.00003 0.000822 <0.00003 - - - - - - -Tin (Sn) mg/L - <0.0004 0.0005 0.0005 <0.00007 <0.00007 <0.00007 <0.0004 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005Titanium (Ti) mg/L 0.100 <0.005 <0.005 0.0063 0.00259 0.0877 0.00179 0.0124 0.009 0.0254 0.023 0.0138 <0.005 0.0222Uranium (U) mg/L 0.015 0.00043 <0.0001 <0.0001 0.00043 0.000334 0.000865 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001Vanadium (V) mg/L - 0.000266 0.0005 0.0007 0.000266 0.00962 0.000265 0.002 0.0016 0.0015 0.0015 0.0022 0.001 0.0015Zinc (Zn) mg/L 0.030 <0.003 <0.003 0.004 <0.003 0.0239 <0.003 0.005 0.004 0.006 0.01 0.005 <0.003 0.005Dissolved MetalsAluminum (Al) mg/L 0.1 - - - 0.00378 0.106 0.00361 - - - - - - -Antimony (Sb) mg/L - - - - 0.0000583 0.000145 0.000068 - - - - - - -Arsenic (As) mg/L 0.005 - - - 0.000241 0.000408 0.000316 - - - - - - -Barium (Ba) mg/L 5 - - - 0.0647 0.0423 0.0813 - - - - - - -Beryllium (Be) mg/L - - - <0.00001 <0.00001 <0.00001 - - - - - - -Bismuth (Bi) mg/L - - - <0.00001 <0.00001 <0.00001 - - - - - - -Boron (B) mg/L 1.2 - - - 0.0111 0.00761 0.0197 - - - - - - -Cadmium (Cd) mg/L calculated - - - <0.000006 0.0000067 0.0000073 - - - - - - -Chlorine (Cl) mg/L - - - - <0.3 <0.3 <0.3 - - - - - - -Chromium (Cr) mg/L 0.001 - - - <0.0003 <0.0003 <0.0003 - - - - - - -Cobalt (Co) mg/L 0.11 - - - 0.000015 0.0000641 <0.00001 - - - - - - -Copper (Cu) mg/L calculated - - - 0.00059 0.00135 0.000646 - - - - - - -Iron (Fe) mg/L 0.3 - - - <0.004 0.13 <0.004 - - - - - - -Lead (Pb) mg/L calculated - - - <0.000006 0.0000676 0.0000223 - - - - - - -Lithium (Li) mg/L 0.87 - - - 0.00407 0.000916 0.00499 - - - - - - -Manganese (Mn) mg/L - - - - 0.00171 0.00241 0.00682 - - - - - - -Molybdenum (Mo) mg/L 0.073 - - - 0.000687 0.00029 0.00158 - - - - - - -Nickel (Ni) mg/L calculated - - - <0.00006 0.000785 <0.00006 - - - - - - -Selenium (Se) mg/L 0.001 - - - <0.0003 <0.0002 <0.0002 - - - - - - -Silver (Ag) mg/L 0.0001 - - - <0.000005 0.0000051 <0.000005 - - - - - - -Strontium (Sr) mg/L - - - - 0.23 0.112 0.225 - - - - - - -Sulphur mg/L - - - - 0.614 <0.6 0.96 - - - - - - -Thallium (Tl) mg/L 0.0008 - - - <0.000003 0.000005 0.000004 - - - - - - -Thorium mg/L - - - - <0.00003 0.0000877 <0.00003 - - - - - - -Tin (Sn) mg/L - - - - <0.00007 <0.00007 <0.00007 - - - - - - -Titanium (Ti) mg/L 0.100 - - - 0.00154 0.00581 0.000933 - - - - - - -Uranium (U) mg/L 0.015 - - - 0.000423 <0.000003 <0.000003 - - - - - - -Vanadium (V) mg/L - - - - 0.00015 0.0001 0.0001 - - - - - - -Zinc (Zn) mg/L 0.030 - - - <0.003 0.00451 <0.003 - - - - - - -Calculated guideline values

Cadmium (mg/L) 0.000043 0.000041 0.000030 0.000043 0.000023 0.000050 0.000027 0.000029 0.000032 0.000025 0.000030 0.000033 0.000026Copper (mg/L) 0.003056 0.002959 0.002120 0.003056 0.001679 0.003590 0.001912 0.002099 0.002304 0.001807 0.002120 0.002365 0.001870

Lead (mg/L) 0.004662 0.004443 0.002704 0.004662 0.001911 0.005926 0.002319 0.002665 0.003061 0.002131 0.002704 0.003182 0.002243nickel (mg/L) 0.120062 0.116667 0.086728 0.120062 0.070497 0.138553 0.079131 0.085978 0.093390 0.075245 0.086728 0.095577 0.077584


Page 4 of 8

Table A2.1 Cont'd.

ER-WQ-3 ER-WQ-3 ER-WQ-3 ET2 ET2 ET2 ET2 ET2 ET2 ET2 ET22005 2005 2005 2005 2006 2007 2008 2009 2009 2009 2010

Spring Summer Fall Fall Winter Spring Summer Summer Fall Winter WinterConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 119 141 99 - 152 78 144 - 154 168 167Color, True T.C.U. - - - - 50 5 52 10 - - 4 4Conductivity (EC) uS/cm - - - - - 311 177 308 - 322 337 333Dissolved Organic Carbon mg/L - - - - - 2 13 3 8.5 2.2 2 3.3Dissolved Oxygen mg/L 5 - - - - 12.41 10.24 - 10 12.2 12.58 -Hardness (as CaCO3) mg/L - 98 110 89 97 134 68 126 - 129 130 143pH (high) pH 6.5-9 8.18 8.36 8.14 7.5 8.2 8.1 8.3 - 8.27 8.2 8.22Temperature oC - - - - 0.05 7.78 10.2 7.5 1.2 0.04 -Total Dissolved Solids mg/L - 122 142 106 140 173 127 201 162 185 200 208Total Organic Carbon mg/L - - - - - 2 14 3 8.4 2.3 2 1.7Total Suspended Solids mg/L 12 6 14 12.4 <3.0 554 11 9 186 <3.0 <3.0Turbidity NTU - - - - - 359 2.42 3.9 - 1.1 -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - 0.5 0.5 0.6 - 2.5 0.5 <1.0Oil and Grease mg/L - - - - - - - - 0.05 0.05 - -Naphthenic Acids mg/L - - - - - <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 - - - <0.001 0.001 0.003 0.004 0.0011 <0.001 <0.001 <0.001Major IonsBicarbonate (HCO3) mg/L - 145 172 121 - 185 95 173 - 187 206 203Calcium (Ca) mg/L - 27 32.8 27.5 29.5 40.8 21.8 37.6 - 39.3 39.7 42.9Carbonate (CO3) mg/L - <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 - - - - 1 1 2 - 1.21 2 1.06Hydroxide (OH) mg/L - - - - - - <5.0 <5.0 - 98.8 <5.0 <5.0Magnesium (Mg) mg/L - 5.1 6.4 4.9 5.6 7.7 3.2 7.7 - 7.44 7.4 8.83Potassium (K) mg/L - 0.8 0.6 0.8 1 0.9 1.5 0.9 - 0.97 1 0.75Sodium (Na) mg/L - 10.3 11.2 9.5 9 18 10 18 - 18.8 20 19.2Sulfate (SO4) mg/L 50 3.8 4.5 4.1 5.6 10.4 7 15.2 - 16.8 12.5 11.4Sulphide mg/L 0.002 - - - <0.002 <0.002 0.008 <0.002 <0.002 <0.002 <0.002 <0.002Nutrients and BODAmmonia-N mg/L 1.04 - - - <0.05 <0.05 <0.05 <0.05 <0.05 - <0.05 <0.05Biochemical Oxygen Demand mg/L - - - - - - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - 0.12 - - - - - - -Nitrate+Nitrite-N mg/L - <0.1 <0.1 <0.1 - 0.4 0.2 0.2 - 0.104 0.5 0.357Nitrite (as N) mg/L 0.06 <0.05 <0.05 <0.05 <0.05 - - - - - - -Phosphorus, Total mg/L 0.05 0.1 0.05 0.2 0.02 0.005 0.3 0.01 0.0104 0.01 0.004 0.0012Phosphorus, Total Dissolved mg/L 0.05 - - - - 0.0015 0.016 0.003 0.0031 0.01 0.002 0.0026Total Kjeldahl Nitrogen mg/L 1 0.24 <0.2 0.38 - <0.2 1 <0.2 - <0.2 <0.2 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.377 0.26 0.629 1.16 0.0696 8.24 0.245 0.473 - 0.0698 0.0488Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 0.0015 0.0000596 0.000183 0.000106 0.0000963 - 0.0000682 0.0000577Arsenic (As) mg/L 0.005 <0.001 <0.001 <0.001 <0.001 0.000452 0.00238 0.000563 0.000616 - 0.000395 0.000369Barium (Ba) mg/L 5 0.072 0.076 0.07 0.0857 0.0966 0.282 0.107 0.084 - 0.113 0.115Beryllium (Be) mg/L <0.001 <0.001 <0.001 <0.001 <0.00001 0.000327 0.0000155 0.0000225 - <0.00001 <0.00001Bismuth (Bi) mg/L <0.0001 <0.0001 <0.0001 <0.0001 <0.00001 0.0000543 <0.00001 <0.00001 - <0.00001 <0.00001Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 <0.02 0.0109 0.00859 0.0118 0.0161 - 0.0117 0.011Cadmium (Cd) mg/L calculated - - - - <0.000006 0.000196 0.0000108 0.0000104 - <0.000006 <0.000006Chlorine (Cl) mg/L - - - - - - 0.327 1.67 <0.3 - 0.814 0.914Chromium (Cr) mg/L 0.001 <0.0008 <0.0008 0.0009 0.0012 <0.0003 0.0117 0.000471 0.000641 - <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0002 <0.0002 0.0003 0.0002 0.0000875 0.00371 0.00012 0.000131 - 0.00005 0.00005Copper (Cu) mg/L calculated - - - 0.003 0.000406 0.00984 0.000828 0.00125 - 0.000404 0.000312Iron (Fe) mg/L 0.3 0.5 0.3 0.8 0.788 0.148 7.21 0.275 0.389 - 0.0733 0.108Lead (Pb) mg/L calculated 0.0003 <0.0001 0.0004 0.0004 0.0000426 0.00734 0.000161 0.000184 - 0.0000344 0.0000765Lithium (Li) mg/L 0.87 0.004 0.004 0.0015 - 0.0039 0.00464 0.00267 0.00534 - 0.00323 0.00221Manganese (Mn) mg/L - 0.024 0.021 0.03 0.019 0.0342 0.199 0.0164 0.0194 - 0.00916 0.00862Mercury (Hg)-Trace ng/L 5 - - - - <1.2 23 <1.2 1.5 - <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.0005 0.0005 0.0005 0.0007 0.00157 0.000262 0.0012 0.000725 - 0.001 0.000952Nickel (Ni) mg/L calculated 0.0012 0.00025 0.0015 0.0006 <0.00006 0.0114 0.000299 0.000811 - <0.00006 <0.00006


Page 5 of 8

Table A2.1 Cont'd.

ER-WQ-3 ER-WQ-3 ER-WQ-3 ET2 ET2 ET2 ET2 ET2 ET2 ET2 ET22005 2005 2005 2005 2006 2007 2008 2009 2009 2009 2010

Spring Summer Fall Fall Winter Spring Summer Summer Fall Winter WinterSelenium (Se) mg/L 0.001 <0.0008 <0.0008 <0.0008 <0.0008 0.000405 0.000365 0.000428 <0.0002 - 0.000748 0.000339Silver (Ag) mg/L 0.0001 <0.0001 <0.0001 0.0001 <0.0001 <0.000005 0.0000901 0.0000057 <0.000005 - <0.000005 0.0000117Strontium (Sr) mg/L - 0.199 0.225 0.178 0.000194 0.261 0.132 0.241 0.211 - 0.304 0.277Sulphur mg/L - 1.1 1.4 1.4 - 3.08 <0.6 5 1.47 - 4.26 3.37Thallium (Tl) mg/L 0.0008 <0.0001 <0.0001 <0.0001 <0.0001 0.000007 0.000181 0.0000099 <0.000003 - <0.000003 <0.000003Thorium mg/L - - - - - <0.00003 0.00199 0.0000484 0.0000817 - <0.00003 <0.00003Tin (Sn) mg/L - 0.0005 0.0005 0.0005 <0.0004 <0.00007 <0.00007 <0.00007 <0.00007 - <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.0065 0.0066 0.011 0.034 0.00516 0.0931 0.00712 0.0112 - 0.00285 0.00193Uranium (U) mg/L 0.015 <0.0001 <0.0001 <0.0001 0.0003 0.000498 0.000907 0.000537 0.000471 - 0.000562 0.00053Vanadium (V) mg/L - 0.0011 0.0009 0.0015 0.002 0.000502 0.0172 0.000849 0.00121 - 0.000304 0.000206Zinc (Zn) mg/L 0.030 <0.003 <0.003 0.015 0.01 0.00783 0.0465 <0.003 <0.003 - <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 - - - - 0.00211 0.0503 0.008 0.0227 - 0.00108 <0.001Antimony (Sb) mg/L - - - - - 0.0000681 0.000181 0.000105 0.0000953 - 0.0000675 0.0000571Arsenic (As) mg/L 0.005 - - - - 0.000341 0.000429 0.000474 0.000532 - 0.000286 0.000288Barium (Ba) mg/L 5 - - - - 0.0948 0.0616 0.0944 0.0772 - 0.101 0.111Beryllium (Be) mg/L - - - - <0.00001 0.0000124 <0.00001 <0.00001 - <0.00001 <0.00001Bismuth (Bi) mg/L - - - - <0.00001 <0.00001 <0.00001 <0.00001 - <0.00001 <0.00001Boron (B) mg/L 1.2 - - - - 0.00924 0.00775 0.0106 0.0153 - 0.0103 0.00981Cadmium (Cd) mg/L calculated - - - - <0.000006 0.0000107 0.0000076 <0.000006 - <0.000006 <0.000006Chlorine (Cl) mg/L - - - - - 1.26 0.324 1.65 <0.3 - 0.756 0.88Chromium (Cr) mg/L 0.001 - - - - 0.000631 <0.0003 0.000466 <0.0003 - <0.0003 <0.0003Cobalt (Co) mg/L 0.11 - - - - <0.00001 0.0000844 0.0000306 0.000028 - <0.00001 0.0000151Copper (Cu) mg/L calculated - - - - 0.000348 0.00151 0.00082 0.000975 - 0.0004 0.00029Iron (Fe) mg/L 0.3 - - - - <0.004 0.0768 0.0225 0.0479 - <0.004 0.0058Lead (Pb) mg/L calculated - - - - 0.000006 0.0000816 0.0000324 0.000025 - <0.000006 0.0000135Lithium (Li) mg/L 0.87 - - - - 0.00338 0.00121 0.00224 0.00529 - 0.00299 0.00206Manganese (Mn) mg/L - - - - - 0.00455 0.00297 0.0054 0.00473 - 0.00276 0.00248Molybdenum (Mo) mg/L 0.073 - - - - 0.00121 0.000259 0.00116 0.000718 - 0.000943 0.000942Nickel (Ni) mg/L calculated - - - - <0.00006 0.000953 0.000097 0.000308 - <0.00006 <0.00006Selenium (Se) mg/L 0.001 - - - - 0.000401 0.000361 0.000399 <0.0002 - 0.000657 <0.0003Silver (Ag) mg/L 0.0001 - - - - <0.000005 <0.000005 <0.000005 <0.000005 - <0.000005 <0.000005Strontium (Sr) mg/L - - - - - 0.259 0.131 0.234 0.208 - 0.275 0.265Sulphur mg/L - - - - - 2.9 <0.6 4.66 1.43 - 3.66 3.09Thallium (Tl) mg/L 0.0008 - - - - 0.0000069 0.0000051 0.0000071 <0.000003 - <0.000003 <0.000003Thorium mg/L - - - - - <0.00003 0.0000679 <0.00003 <0.00003 - <0.00003 <0.00003Tin (Sn) mg/L - - - - - <0.00007 <0.00007 <0.00007 <0.00007 - <0.00007 <0.00007Titanium (Ti) mg/L 0.100 - - - - 0.00341 0.00517 0.00111 0.00202 - 0.000885 0.000951Uranium (U) mg/L 0.015 - - - - 0.000469 <0.000003 <0.000003 <0.000003 - <0.000003 <0.000003Vanadium (V) mg/L - - - - - 0.000257 0.0001 0.0001 0.0001 - 0.0001 <0.0002Zinc (Zn) mg/L 0.030 - - - - 0.00775 <0.003 <0.003 <0.003 - <0.003 <0.003Calculated guideline values

Cadmium (mg/L) 0.000033 0.000036 0.000030 0.000032 0.000043 0.000024 0.000040 0.000040 0.000041 0.000041 0.000045Copper (mg/L) 0.002324 0.002565 0.002141 0.002304 0.003037 0.001701 0.002881 0.002881 0.002940 0.002959 0.003210

Lead (mg/L) 0.003101 0.003592 0.002743 0.003061 0.004618 0.001947 0.004270 0.004270 0.004400 0.004443 0.005016nickel (mg/L) 0.094120 0.102757 0.087476 0.093390 0.119386 0.071295 0.113929 0.113929 0.115985 0.116667 0.125432


Page 6 of 8

Table A2.1 Cont'd.

ET3 ET3 ET3 ET3 ET3 ET3 BC BC BC BC BC BC BC BC2006 2008 2008 2008 2008 2009 2006 2006 2006 2006 2007 2007 2007 2008

Winter Spring Summer Fall Winter Summer Spring Summer Fall Winter Fall Spring Summer WinterConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 193 102 178 170 242 - 146 191 98 215 222 107 180 338Color, True T.C.U. - 9 - 14 16 6 - 30 15 50 11 15 42 20 7Conductivity (EC) uS/cm - 380 195 346 317 462 - 271 341 197 406 408 206 329 631Dissolved Organic Carbon mg/L - 3 8 4 4 2 3.9 9 5 13 4 5 9 7 3Dissolved Oxygen mg/L 5 12.87 9.6 - - 10.37 10 7.52 8.64 11.25 13.21 12.2 - 9.48 5.91Hardness (as CaCO3) mg/L - 165 82 137 136 204 - 129 158 92 180 171 89 139 271pH (high) pH 6.5-9 8.2 8.2 8.4 8.2 8.1 - 8.2 8.4 8.3 8.2 8.5 8.3 8.1 8Temperature oC 0.06 9.2 13 - 0.02 9.6 11.14 16.03 5.68 0.06 5.5 - 11.39 0Total Dissolved Solids mg/L - 218 138 240 192 273 465 179 206 120 230 236 139 197 367Total Organic Carbon mg/L - 3 9 4 4 3 3.9 8 6 13 4 5 10 7 3Total Suspended Solids mg/L <3.0 24 3 3 <3.0 3 <3.0 3 5 <3.0 <3.0 10 <3.0 <3.0Turbidity NTU - 18.7 0.01 - 1.42 0.9 - - - 10.2 214 - 2.12 1.09General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - 0.5 - 0.5 0.5 0.5 - - - 0.5 0.5 0.5 0.5 0.5 0.5Oil and Grease mg/L - - 0.05 - - - 0.05 - - - - - - - -Naphthenic Acids mg/L - <1.0 <1.0 2 <1.0 <1.0 <1.0 - - 2 <1.0 <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 0.001 0.002 0.006 0.004 <0.001 <0.001 - - <0.001 0.001 0.002 0.028 0.004 <0.001Major IonsBicarbonate (HCO3) mg/L - 236 124 212 207 295 - 178 225 118 262 257 130 219 412Calcium (Ca) mg/L - 50.1 25.1 41.2 40.8 60.4 - 38.2 46.1 27.2 52 49.8 26.5 40 74.8Carbonate (CO3) mg/L - <5.0 <5.0 <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0 <5.0 7 <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 1 1 1 1 2 - 0.5 1 1 1 1 0.5 1 0.5Hydroxide (OH) mg/L - - <5.0 <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L - 9.6 4.7 8.4 8.2 12.9 - 8.1 10.5 5.8 12.3 11.4 5.5 9.4 20.5Potassium (K) mg/L - 1 0.6 1 0.8 1 - 0.7 0.8 0.7 0.9 1.6 0.8 1 1.3Sodium (Na) mg/L - 22 10 20 17 26 - 14 18 10 23 24 9 21 41Sulfate (SO4) mg/L 50 8.4 5.9 8.3 7.6 9 - 4.9 4.4 3.7 4.9 6.1 2.9 3.9 9.9Sulphide mg/L 0.002 <0.002 0.003 <0.002 <0.002 <0.002 <0.002 <0.002 - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002Nutrients and BODAmmonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Biochemical Oxygen Demand mg/L - - <2.0 <2.0 3 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - - - - - 0.2 - - - - - -Nitrate+Nitrite-N mg/L - 0.2 0.1 <0.1 <0.1 0.2 - <0.1 0.2 <0.1 0.1 <0.1 <0.1 <0.1 0.1Nitrite (as N) mg/L 0.06 - - - - - - - <0.05 - - - - - -Phosphorus, Total mg/L 0.05 0.004 0.032 0.006 0.004 0.005 0.0136 0.007 0.005 0.012 0.004 0.007 0.01 0.004 0.007Phosphorus, Total Dissolved mg/L 0.05 0.002 0.005 0.004 0.002 0.002 0.0067 0.003 0.003 0.006 0.003 0.003 0.003 0.003 0.003Total Kjeldahl Nitrogen mg/L 1 <0.2 0.4 <0.2 0.3 <0.2 - <0.2 0.3 0.5 <0.2 <0.2 0.3 <0.2 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.0908 1.21 0.0407 0.0258 0.0672 0.655 0.154 0.34 0.242 0.0581 0.0423 0.476 0.111 0.05Antimony (Sb) mg/L - 0.0000688 0.000107 0.0000992 0.0000708 0.0000662 0.000313 0.0000911 0.0000874 0.0000749 0.0000541 0.000066 0.0000728 0.0000734 0.0000635Arsenic (As) mg/L 0.005 0.000383 0.000725 0.000683 0.000414 0.000463 0.00108 0.000463 0.000558 0.000533 0.000367 0.000441 0.000431 0.000611 0.000606Barium (Ba) mg/L 5 0.102 0.0792 0.104 0.0987 0.146 0.109 0.0741 0.0995 0.0534 0.0993 0.0859 0.0582 0.109 0.176Beryllium (Be) mg/L <0.00001 0.0000455 <0.00001 <0.00001 <0.00001 0.0000116 <0.00001 0.0000155 0.0000161 <0.00001 <0.00001 0.0000134 <0.00001 <0.00001Bismuth (Bi) mg/L <0.00001 0.000011 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.0000141 <0.00001 <0.00001Boron (B) mg/L 1.2 0.0157 0.00922 0.0147 0.0123 0.0155 0.0607 0.0113 0.0131 0.00915 0.0118 0.013 0.00832 0.0165 0.024Cadmium (Cd) mg/L calculated <0.000006 0.0000183 0.0000159 0.0000095 0.0000092 0.0000167 0.0000154 0.0000148 0.0000103 <0.000006 <0.000006 0.0000106 <0.000006 0.0000121Chlorine (Cl) mg/L - - <0.3 0.31 1.9 0.69 1.43 0.33 0.701 0.989 <0.3 <0.3 <0.3 <0.3 1.77Chromium (Cr) mg/L 0.001 0.00068 0.0015 <0.0003 <0.0003 <0.0003 0.000657 0.000401 0.000351 0.000504 <0.0003 <0.0003 0.00058 <0.0003 0.000304Cobalt (Co) mg/L 0.11 0.0000527 0.000456 0.00005 0.00005 0.0000588 0.000159 0.0000753 0.000166 0.000095 0.0000497 0.0000525 0.000146 0.000051 0.0000569Copper (Cu) mg/L calculated 0.00054 0.00225 0.00131 0.000736 0.000559 0.000986 0.00132 0.000728 0.00137 0.000567 0.000455 0.00132 <0.0001 0.000666Iron (Fe) mg/L 0.3 0.214 1.12 0.105 0.151 0.191 0.321 0.161 0.296 0.288 0.0917 0.0899 0.367 0.105 0.125Lead (Pb) mg/L calculated 0.0000483 0.000598 0.0000699 0.0000271 0.0000508 0.000234 0.0000846 0.000139 0.00013 0.0000302 <0.000006 0.000186 0.0000063 0.0000646Lithium (Li) mg/L 0.87 0.00533 0.00212 0.00348 0.00288 0.00526 0.00897 0.00373 0.00426 0.00285 0.00575 0.00414 0.00293 0.00644 0.00953Manganese (Mn) mg/L - 0.00904 0.0379 0.0176 0.0167 0.0448 0.0475 0.00969 0.0179 0.00906 0.0213 0.0177 0.0122 0.0244 0.064Mercury (Hg)-Trace ng/L 5 <1.2 4 <1.2 <1.2 <1.2 <1.2 <1.2 1.2 2.1 - 1.9 1.4 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.00101 0.000625 0.00116 0.00098 0.00109 0.00668 0.000698 0.000872 0.00049 0.000804 0.000719 0.000449 0.000931 0.0013Nickel (Ni) mg/L calculated 0.000139 0.000754 0.000298 0.000118 0.000127 0.000821 0.000525 0.00201 0.000715 0.000095 0.000249 0.000673 <0.00006 <0.00006


Page 7 of 8

Table A2.1 Cont'd.

ET3 ET3 ET3 ET3 ET3 ET3 BC BC BC BC BC BC BC BC2006 2008 2008 2008 2008 2009 2006 2006 2006 2006 2007 2007 2007 2008

Winter Spring Summer Fall Winter Summer Spring Summer Fall Winter Fall Spring Summer WinterSelenium (Se) mg/L 0.001 <0.0003 <0.0002 <0.0002 <0.0002 <0.0002 0.00104 <0.0003 <0.0003 <0.0003 <0.0003 <0.0002 <0.0002 <0.0002 0.00021Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 0.000007 0.000011 <0.000005 0.000042 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 0.0000058 <0.000005 <0.000005Strontium (Sr) mg/L - 0.326 0.151 0.273 0.26 0.342 0.322 0.224 0.326 0.124 0.398 0.278 0.166 0.397 0.538Sulphur mg/L - 2.81 2.43 2.93 3.02 2.32 17.4 0.94 0.683 1.22 1.39 0.937 0.631 1.09 5.05Thallium (Tl) mg/L 0.0008 <0.000003 0.0000199 0.000006 0.0000061 0.0000054 0.0000162 0.0000076 0.0000089 0.0000167 <0.000003 <0.000003 0.0000109 0.0000043 0.0000045Thorium mg/L - <0.00003 0.000219 <0.00003 <0.00003 <0.00003 0.00011 <0.00003 <0.00003 0.0000472 <0.00003 <0.00003 0.0000945 <0.00003 <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 0.0000996 <0.00007 <0.00007 0.00021Titanium (Ti) mg/L 0.100 0.00417 0.0343 0.00173 0.00151 0.00197 0.0176 0.00291 0.0066 0.0063 0.00296 0.0014 0.0117 0.00277 0.00226Uranium (U) mg/L 0.015 0.000771 0.000431 0.000678 0.000534 0.000934 0.00424 0.00042 0.000663 0.000178 0.000795 0.000498 0.000269 0.000741 0.00186Vanadium (V) mg/L - 0.000275 0.00268 0.000386 0.000253 0.000277 0.00129 0.000679 0.000928 0.000788 0.000232 0.000226 0.00112 0.00045 0.000303Zinc (Zn) mg/L 0.030 0.00429 0.00397 <0.003 <0.003 <0.003 <0.003 0.00935 0.003 <0.003 <0.003 <0.003 0.00513 <0.003 0.00301Dissolved MetalsAluminum (Al) mg/L 0.1 0.0017 0.0926 0.00588 0.00227 0.00106 0.00397 0.0105 0.00427 0.0581 0.00147 0.00225 0.0254 0.00221 0.00131Antimony (Sb) mg/L - 0.000059 0.000106 0.0000982 0.0000701 0.0000655 0.00031 0.0000911 0.0000874 0.0000747 0.0000536 0.0000653 0.0000721 0.0000727 0.0000629Arsenic (As) mg/L 0.005 0.000334 0.000417 0.000649 0.000355 0.000334 0.001 0.000414 0.000484 0.000524 0.000341 0.000406 0.000328 0.000531 0.00048Barium (Ba) mg/L 5 0.0989 0.0595 0.101 0.092 0.14 0.102 0.0649 0.0868 0.0496 0.0916 0.0825 0.0508 0.101 0.161Beryllium (Be) mg/L <0.00001 0.0000124 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.000014 <0.00001 <0.00001Boron (B) mg/L 1.2 0.0118 0.00913 0.0146 0.0111 0.0143 0.0601 0.00991 0.0114 0.00863 0.0114 0.0121 0.00743 0.0152 0.0238Cadmium (Cd) mg/L calculated <0.000006 0.0000072 0.000008 <0.000006 0.0000091 0.00001 0.0000153 0.0000139 0.0000103 <0.000006 <0.000006 <0.000006 <0.000006 0.000012Chlorine (Cl) mg/L - 0.366 <0.3 0.307 1.88 0.653 1.42 0.327 <0.3 0.99 <0.3 <0.3 <0.3 <0.3 1.75Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000432 0.000401 <0.0003 0.000504 <0.0003 <0.0003 <0.0003 <0.0003 0.000301Cobalt (Co) mg/L 0.11 0.0000283 0.0000907 0.0000365 0.0000236 0.0000262 0.0000391 0.0000386 0.0000542 0.0000441 0.000022 0.0000339 0.0000406 0.0000199 0.0000392Copper (Cu) mg/L calculated 0.000522 0.00223 0.0013 0.000667 0.000553 0.000625 0.00116 0.000496 0.00129 0.000561 0.00045 0.0011 <0.0001 0.000661Iron (Fe) mg/L 0.3 0.0307 0.114 0.0238 0.0627 <0.004 <0.004 0.0244 0.0053 0.117 0.0137 0.0352 0.0437 <0.004 <0.004Lead (Pb) mg/L calculated <0.000006 0.0000576 0.0000241 <0.000006 <0.000006 0.0000066 0.0000207 0.0000066 0.0000495 0.0000067 <0.000006 0.0000249 <0.000006 0.0000115Lithium (Li) mg/L 0.87 0.00514 0.00206 0.00345 0.00247 0.00509 0.00888 0.00328 0.00405 0.00276 0.00573 0.0039 0.00269 0.00634 0.00912Manganese (Mn) mg/L - 0.0285 0.0131 0.00969 0.0117 0.0395 0.000344 0.00607 0.0111 0.0043 0.0191 0.0157 0.00548 0.0166 0.0579Molybdenum (Mo) mg/L 0.073 0.00098 0.000619 0.00115 0.000927 0.00107 0.00661 0.000657 0.000829 0.000479 0.000754 0.000712 0.000445 0.000921 0.00121Nickel (Ni) mg/L calculated <0.00006 <0.00006 0.000228 0.000108 0.000069 0.000511 0.000399 0.00142 0.000423 <0.00006 0.000247 0.000402 <0.00006 <0.00006Selenium (Se) mg/L 0.001 <0.0003 <0.0002 <0.0002 <0.0002 <0.0002 0.00103 <0.0003 <0.0003 <0.0003 <0.0003 <0.0002 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - 0.313 0.147 0.273 0.246 0.331 0.322 0.205 0.299 0.121 0.388 0.27 0.164 0.381 0.504Sulphur mg/L - 2.25 2.41 2.9 2.94 2.3 17.2 0.94 0.683 1.14 1.21 0.928 0.625 0.644 4.28Thallium (Tl) mg/L 0.0008 <0.000003 0.0000051 0.0000052 0.000006 0.0000041 0.000016 0.0000076 0.0000055 0.0000156 <0.000003 <0.000003 0.0000047 0.0000037 0.0000038Thorium mg/L - <0.00003 0.0000605 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 0.0000472 <0.00003 <0.00003 0.0000416 <0.00003 <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.00282 0.00476 0.000944 0.000926 0.000909 0.000839 0.00114 0.000929 0.00364 0.00185 0.000859 0.00197 0.000921 0.000911Uranium (U) mg/L 0.015 0.000714 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L - 0.000105 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.00935 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline values

Cadmium (mg/L) 0.000051 0.000028 0.000043 0.000043 0.000061 0.000043 0.000041 0.000049 0.000031 0.000055 0.000053 0.000030 0.000044 0.000078Copper (mg/L) 0.003628 0.001996 0.003095 0.003075 0.004349 0.003095 0.002940 0.003496 0.002202 0.003908 0.003740 0.002141 0.003133 0.005543

Lead (mg/L) 0.006019 0.002471 0.004750 0.004706 0.007885 0.004750 0.004400 0.005696 0.002861 0.006724 0.006299 0.002743 0.004838 0.011319nickel (mg/L) 0.139843 0.082196 0.121411 0.120737 0.164313 0.121411 0.115985 0.135311 0.089708 0.149403 0.143691 0.087476 0.122756 0.203896


Page 8 of 8

Table A2.2 Water quality data for unimpacted watercourses within the Local Study Area.

HA-WQ-1 HA-WQ-1 HA-WQ-1 HA-WQ-1 HA-WQ-2 HA-WQ-2 HA-WQ-2 HA-WQ-2 HA-WQ-3 LC LC LC LC LC LC LC2005 2005 2005 2008 2005 2005 2006 2009 2005 2006 2006 2006 2006 2007 2007 2007

Spring Fall Summer Winter Summer Fall Winter Winter Spring Spring Summer Fall Winter Spring Summer Fall

Conventional VariablesAlkalinity, Total (as CaCO3) mg/L 117 85 158 235 174 96 1198 237 144 166 224 114 231 132 201 193Color, True T.C.U. - - - 3 - - 14 4 - 30 15 60 10 36 21 20Conductivity (EC) uS/cm - - - 457 - - 381 439 - 305 392 225 429 259 368 353Dissolved Organic Carbon mg/L - - - 3 - - 4 3 - 8 6 13 3 10 6 5Dissolved Oxygen mg/L 5 - - - 6.1 - - 12.03 11.81 - 6.69 8.85 10.81 13.11 9.04 9.1 12.6Hardness (as CaCO3) mg/L 96 76 120 207 141 93 179 199 120 159 201 116 211 119 170 174pH pH 6.5-9 7.95 7.76 7.86 8.2 8.15 7.92 8.2 8.2 8.1 8.3 8.5 8.4 8.2 8.2 8.5 8.2Temperature oC - - - 0.07 - - - 1.16 - 16.64 14.7 7.35 0.04 11.88 14.87 4.7Total Dissolved Solids mg/L 120 127 150 273 172 153 222 258 150 197 227 141 249 165 236 209Total Organic Carbon mg/L - - - 3 - - 4 3 - 8 6 13 4 11 6 5Total Suspended Solids mg/L <3.0 <3.0 <3.0 <3.0 3 6 <3.0 3 20 4 <3.0 <3.0 <3.0 263 4 <3.0Turbidity NTU - - - 0.04 - - - 0.05 - - - - - 85.5 3.11 1.4General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - 0.5 - - 0.5 0.5 - - - 0.5 0.5 0.5 0.5 0.5Oil and Grease mg/L - - - - - - - - - - - - - - - -Naphthenic Acids mg/L - - - <1.0 - - <1.0 <1.0 - - - 2 <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 - - - <0.001 - - 0.001 <0.001 - - - <0.001 0.001 0.002 0.002 0.005Mojor IonsBicarbonate (HCO3) mg/L 142 104 193 286 212 117 242 289 176 200 257 135 281 161 231 235Calcium (Ca) mg/L <0.5 22.8 36.2 60.5 40.1 27 52.2 57.8 28.1 46.9 57.9 33.7 61.3 36.1 50.1 49.9Carbonate (CO3) mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 8 <5.0 <5.0 <5.0 7 <5.0Chloride (Cl) mg/L 230 - - - 5 - - 4 2 - 1 1 2 <0.5 1 1 1Hydroxide (OH) mg/L - - - <5.0 - - - <5.0 - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L 0.1 4.7 7.7 13.5 9.9 6.1 11.8 13.3 6.4 10.2 13.6 7.7 14 7.1 11 11.9Potassium (K) mg/L 0.6 0.6 0.5 1.2 0.8 0.6 1 1.2 0.7 0.9 1.1 0.8 1 1.7 1.3 1Sodium (Na) mg/L 9.3 6.8 9.9 18 11 7.4 17 18 10.8 11 14 8 16 9 13 13Sulfate (SO4) mg/L 50 1 1 1 7.2 2 2 4.3 6.5 3 5.4 4.8 4.7 5.3 3.3 6 4.7Sulphide mg/L 0.002 - - - <0.002 - - <0.002 <0.002 - <0.002 - <0.002 <0.002 0.006 <0.002 <0.002Nuttients and BODAmmonia-N mg/L 1.04 - - - <0.05 - - <0.05 <0.05 - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Biochemical Oxygen Demand mg/L - - - <2.0 - - - <2.0 - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - - - - - - - - 0.2 - - - - -Nitrate+Nitrite-N mg/L <0.1 <0.1 <0.1 0.3 <0.1 <0.1 0.2 0.2 <0.1 <0.1 0.2 <0.1 <0.1 <0.1 <0.1 <0.1Nitrite (as N) mg/L 0.06 <0.05 <0.05 <0.05 - <0.05 <0.05 - - <0.05 - <0.05 - - - - -Phosphorus, Total mg/L 0.05 0.1 0.1 0.05 0.005 0.05 0.05 0.011 0.004 0.1 0.009 0.007 0.009 0.004 0.184 0.008 0.005Phosphorus, Total Dissolved mg/L 0.05 - - - 0.005 - - 0.006 <0.001 - 0.004 0.003 0.005 0.002 0.007 0.003 0.003Total Kjeldahl Nitrogen mg/L 1 0.26 0.39 0.37 <0.2 <0.2 0.39 <0.2 <0.2 0.22 <0.2 <0.2 0.4 <0.2 0.9 <0.2 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.033 0.063 0.029 0.0081 0.653 0.258 0.014 0.00415 0.113 0.239 0.141 0.415 0.0558 5.22 0.15 0.0654Antimony (Sb) mg/L <0.0002 <0.0002 <0.0002 0.0000727 <0.0002 <0.0002 0.0000588 0.0000638 <0.0002 0.000101 0.0000893 0.0000748 0.0000521 0.000156 0.0000863 0.0000541Arsenic (As) mg/L 0.005 <0.001 <0.001 0.002 0.000255 0.0014 <0.001 0.00067 0.000257 <0.001 0.000641 0.000734 0.000533 0.000384 0.00186 0.000793 0.000541Barium (Ba) mg/L 5 0.051 0.038 0.068 0.126 0.091 0.053 0.0945 0.114 0.067 0.0843 0.107 0.0675 0.112 0.187 0.0974 0.0964Beryllium (Be) mg/L <0.001 <0.001 <0.001 <0.00001 <0.001 <0.001 <0.00001 <0.00001 <0.001 <0.00001 0.00005 0.0000154 <0.00001 0.000198 <0.00001 <0.00001Bismuth (Bi) mg/L <0.0001 <0.0001 <0.0001 <0.00001 <0.0001 <0.0001 <0.00001 <0.00001 <0.0001 <0.00001 0.00005 <0.00001 0.0000128 0.0000441 <0.00001 <0.00001Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 0.0136 <0.02 <0.02 0.0116 0.0133 <0.02 0.00994 0.0126 0.00778 0.0126 0.0088 0.0109 0.011Cadmium (Cd) mg/L calculated - - - <0.000006 - - 0.0000098 <0.000006 - 0.0000221 <0.000006 0.0000109 0.0000106 0.000104 <0.000006 <0.000006Chlorine (Cl) mg/L - - - 5.17 - - - 2.47 - <0.3 <0.3 0.549 <0.3 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 <0.0008 <0.0008 <0.0008 <0.0003 0.0009 <0.0008 <0.0003 <0.0003 <0.0008 0.000443 <0.0003 0.000655 <0.0003 0.00709 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 <0.0002 <0.0002 <0.0002 0.00005 0.0004 <0.0002 0.00005 0.00005 <0.0002 0.0000935 0.0000806 0.000126 0.00005 0.00208 0.0000539 0.00005Copper (Cu) mg/L calculated - - - 0.000414 - - 0.0004 0.000343 - 0.00137 0.0051 0.00147 0.000591 0.0056 0.000225 0.000546Iron (Fe) mg/L 0.3 0.2 0.4 1 0.0056 1 0.5 0.493 <0.004 0.3 0.247 0.192 0.38 0.203 4.68 0.165 0.185Lead (Pb) mg/L calculated 0.0001 <0.0001 <0.0001 <0.000006 0.0003 0.0001 0.0000228 <0.000006 0.0001 0.000139 0.000322 0.000178 0.0000418 0.00342 0.0000427 <0.000006


Page 1 of 8

Table A2.2 Cont'd.

HA-WQ-1 HA-WQ-1 HA-WQ-1 HA-WQ-1 HA-WQ-2 HA-WQ-2 HA-WQ-2 HA-WQ-2 HA-WQ-3 LC LC LC LC LC LC LC2005 2005 2005 2008 2005 2005 2006 2009 2005 2006 2006 2006 2006 2007 2007 2007

Spring Fall Summer Winter Summer Fall Winter Winter Spring Spring Summer Fall Winter Spring Summer Fall

Lithium (Li) mg/L 0.87 0.004 0.0015 0.004 0.00611 0.006 0.004 0.00594 0.0059 0.005 0.00389 0.00541 0.00213 0.00565 0.00493 0.00495 0.00412Manganese (Mn) mg/L 0.028 0.026 0.12 0.0148 0.098 0.042 0.0212 0.00982 0.031 0.017 0.0175 0.0169 0.0184 0.188 0.0183 0.0109Mercury (Hg)-Trace ng/L 5 - - - <1.2 - - - <1.2 - <1.2 <1.2 1.8 - 9.2 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.0005 0.0005 0.0005 0.000907 0.0005 0.0005 0.000672 0.000797 0.0005 0.000702 0.000947 0.000428 0.00078 0.000378 0.00079 0.000693Nickel (Ni) mg/L calculated 0.0008 0.00025 0.0012 <0.00006 0.0009 0.0005 <0.00006 <0.00006 0.001 0.000581 0.00175 0.000949 <0.00006 0.00598 <0.00006 0.000283Selenium (Se) mg/L 0.001 <0.0008 <0.0008 <0.0008 0.00029 <0.0008 <0.0008 <0.0003 0.000427 <0.0008 <0.0003 <0.0003 <0.0003 <0.0003 0.000487 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 0.0001 <0.0001 <0.0001 <0.000005 0.0001 <0.0001 <0.000005 <0.000005 <0.0001 <0.000005 0.000005 <0.000005 <0.000005 0.0000596 <0.000005 <0.000005Strontium (Sr) mg/L 0.233 0.159 0.285 0.458 0.378 0.202 0.44 0.541 0.326 0.266 0.395 0.175 0.453 0.198 0.371 0.332Sulphur mg/L 0.6 <0.6 <0.6 2.39 0.9 0.6 0.001 2.01 1 0.97 2.02 2.45 1.51 <0.6 <0.6 1.5Thallium (Tl) mg/L 0.0008 <0.0001 <0.0001 <0.0001 0.0000034 <0.0001 <0.0001 0.0000087 <0.000003 <0.0001 0.0000097 0.00005 0.0000055 0.0000114 0.000107 0.0000064 0.0000033Thorium mg/L - - - 0.00003 - - 0.0000226 0.00003 - 0.00003 0.00005 0.0000346 0.0000478 0.0012 0.00003 0.00003Tin (Sn) mg/L 0.0005 0.0005 0.0005 <0.00007 0.0005 0.0005 <0.00007 <0.00007 0.0005 <0.00007 0.000256 <0.00007 <0.00007 0.0000862 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 <0.005 <0.005 <0.005 0.00106 0.0127 0.0062 0.00247 0.00163 <0.005 0.00432 0.00235 0.0116 0.00313 0.112 0.00376 0.00195Uranium (U) mg/L 0.015 <0.0001 <0.0001 <0.0001 0.00105 <0.0001 <0.0001 0.000706 0.000959 <0.0001 0.000541 0.000842 0.000274 0.000978 0.000763 0.000643 0.000652Vanadium (V) mg/L 0.0005 0.0005 0.0005 0.0001 0.0016 0.0005 0.000171 0.0001 0.0005 0.000967 0.000622 0.00118 0.000266 0.0114 0.000769 0.000361Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.0148 - <0.003 <0.003 0.0225 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 - - - <0.001 - - 0.00192 <0.001 - 0.00975 <0.001 0.0629 0.00241 0.0259 0.00426 0.0021Antimony (Sb) mg/L - - - 0.000072 - - 0.0000582 0.0000632 - 0.000101 0.0000886 0.0000742 0.0000516 0.000154 0.0000854 0.0000536Arsenic (As) mg/L 0.005 - - - 0.000243 - - 0.000482 0.00024 - 0.000583 0.000628 0.000473 0.000328 0.000515 0.000693 0.000461Barium (Ba) mg/L 5 - - - 0.117 - - 0.0894 0.106 - 0.0772 0.0957 0.0613 0.111 0.0676 0.0921 0.0868Beryllium (Be) mg/L - - - <0.00001 - - <0.00001 <0.00001 - <0.00001 0.00005 0.0000107 <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L - - - <0.00001 - - <0.00001 <0.00001 - <0.00001 0.00005 <0.00001 0.0000127 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 - - - 0.0129 - - 0.0105 0.0123 - 0.00937 0.0115 0.00619 0.011 0.00764 0.0104 0.00867Cadmium (Cd) mg/L calculated - - - <0.000006 - - <0.000006 <0.000006 - 0.000008 <0.000006 0.0000068 0.000009 0.0000125 <0.000006 <0.000006Chlorine (Cl) mg/L - - - - 5.02 - - 3.05 2.3 - <0.3 <0.3 0.548 <0.3 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 - - - <0.0003 - - <0.0003 <0.0003 - <0.0003 <0.0003 0.000446 <0.0003 0.000643 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 - - - <0.00001 - - 0.0000384 <0.00001 - 0.0000929 0.00005 0.0000465 0.000011 0.0000429 0.0000102 0.0000156Copper (Cu) mg/L calculated - - - 0.00041 - - 0.000372 0.00034 - 0.00106 0.000345 0.00121 0.00054 0.00123 0.000155 0.000423Iron (Fe) mg/L 0.3 - - - <0.004 - - 0.144 <0.004 - 0.0197 0.0081 0.113 0.0247 0.045 <0.004 0.0523Lead (Pb) mg/L calculated - - - <0.000006 - - <0.000006 <0.000006 - 0.0000212 0.00005 0.0000553 0.0000065 0.0000433 <0.000006 <0.000006Lithium (Li) mg/L 0.87 - - - 0.00609 - - 0.00588 0.0056 - 0.00355 0.00541 0.00181 0.00559 0.00287 0.00469 0.00358Manganese (Mn) mg/L - - - 0.0126 - - 0.0188 0.00825 - 0.0035 0.00173 0.00223 0.0136 0.00191 0.00293 0.00644Molybdenum (Mo) mg/L 0.073 - - - 0.000852 - - 0.000663 0.000783 - 0.000667 0.000912 0.00042 0.000772 0.000374 0.000782 0.000668Nickel (Ni) mg/L calculated - - - <0.00006 - - <0.00006 <0.00006 - 0.000288 0.00152 0.000668 <0.00006 0.000483 <0.00006 <0.00006Selenium (Se) mg/L 0.001 - - - <0.0002 - - 0.000137 0.00031 - <0.0003 <0.0003 <0.0003 <0.0003 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 - - - <0.000005 - - 0.0000005 <0.000005 - <0.000005 0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - - - 0.435 - - 0.438 0.509 - 0.256 0.368 0.172 0.448 0.196 0.368 0.309Sulphur mg/L - - - 2.01 - - 0.99 1.87 - 0.97 2.01 2.41 1.49 <0.6 <0.6 0.78Thallium (Tl) mg/L 0.0008 - - - 0.0000033 - - 0.0000086 <0.000003 - 0.0000069 0.00005 0.0000034 0.0000113 0.0000089 0.0000051 <0.000003Thorium mg/L - - - <0.00003 - - <0.00003 <0.00003 - <0.00003 0.00005 0.0000338 0.000047 0.0000329 <0.00003 <0.00003Tin (Sn) mg/L - - - <0.00007 - - <0.00007 <0.00007 - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 - - - 0.000941 - - 0.00226 0.000962 - 0.00113 0.000824 0.00376 0.00261 0.0023 0.000996 0.00078Uranium (U) mg/L 0.015 - - - <0.000003 - - 0.000699 <0.000003 - <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L - - - 0.0001 - - 0.000121 0.0001 - 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001Zinc (Zn) mg/L 0.030 - - - <0.003 - - <0.003 <0.003 - 0.00786 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline valuesCadmium (mg/L) 0.000032 0.000026 0.000039 0.000062 0.000044 0.000031 0.000055 0.000060 0.000039 0.000049 0.000060 0.000038 0.000063 0.000038 0.000052 0.000053Copper (mg/L) 0.002284 0.001870 0.002763 0.004403 0.003172 0.002223 0.003889 0.004258 0.002763 0.003515 0.004294 0.002685 0.004476 0.002744 0.003721 0.003796Lead (mg/L) 0.003020 0.002243 0.004013 0.008033 0.004927 0.002901 0.006676 0.007640 0.004013 0.005741 0.007738 0.003843 0.008231 0.003970 0.006252 0.006440nickel (mg/L) 0.092657 0.077584 0.109782 0.166146 0.124096 0.090448 0.148772 0.161243 0.109782 0.135961 0.162473 0.106989 0.168580 0.109086 0.143052 0.145603<Bold indicates value is below detection limitIndicates value is above applicable guideline


Page 2 of 8

Table A2.2 Cont'd.

LUC LUC LUC LC LUC LUC LUC LUC LUC MC MC MC MC MC MC MC MC2007 2007 2007 2008 2008 2008 2008 2008 2009 2008 2008 2008 2009 2009 2009 2009 2010

Spring Summer Fall Winter Spring Summer Fall Winter Winter Spring Summer Fall Spring Summer Fall Winter Winter

Conventional VariablesAlkalinity, Total (as CaCO3) mg/L 84 171 153 285 79 172 174 246 223 134 197 184 125 - 189 196 195Color, True T.C.U. 88 25 25 11 - 21 22 10 8 - 11 12 - - - 3 4Conductivity (EC) uS/cm 170 319 275 532 153 328 313 466 406 259 366 353 259 - 369 381 385Dissolved Organic Carbon mg/L 17 6 8 3 13 6 6 4 4 7 3 3 8 3.9 2.8 2 3.1Dissolved Oxygen mg/L 5 8.85 - 12.2 - 9.9 - - 11.59 11.97 10.2 - - 11.7 - - 12.65 -Hardness (as CaCO3) mg/L 75 143 135 262 73 153 151 226 180 137 173 173 123 - 173 173 208pH pH 6.5-9 8.1 8.4 8.1 7.9 8 8.3 8.2 7.9 8.1 8.3 8.4 8.3 7.74 - 8.29 8.1 8.14Temperature oC 13.25 - 5.8 - 8.7 13.3 - 0.08 0.06 5.6 - - - 9.5 - 1.01 -Total Dissolved Solids mg/L 134 182 182 311 112 215 189 277 250 167 210 208 138 156 210 224 232Total Organic Carbon mg/L 15 7 7 3 14 6 5 4 4 8 3 3 8 4.1 2.8 2 2.2Total Suspended Solids mg/L 223 <3.0 <3.0 <3.0 13 5 <3.0 - <3.0 23 <3.0 <3.0 4 9 209 <3.0 <3.0Turbidity NTU 2.3 - 1.2 - 12.43 0.03 - 2.25 1.8 6.5 - - 6 0.01 - 0.95 -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L 0.5 0.5 0.5 0.5 - 0.9 0.5 0.5 0.5 - 0.5 0.5 0.5 - 2.5 0.5 <1.0Oil and Grease mg/L - - - - 0.05 - - - - 0.05 - - - 0.05 0.05 - -Naphthenic Acids mg/L <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 - <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 0.004 0.004 0.004 <0.001 0.004 0.005 0.004 <0.001 0.001 0.002 <0.001 0.002 0.0017 <0.001 <0.001 0.001 <0.001Mojor IonsBicarbonate (HCO3) mg/L 102 203 186 348 97 206 212 300 272 163 233 225 153 - 230 240 238Calcium (Ca) mg/L 23.9 44.1 40.6 73.6 22.5 46.4 45.6 67.1 55.1 40 50.6 50 36.3 - 51.5 51 60.7Carbonate (CO3) mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 2 1 1 <0.5 1 1 <0.5 <0.5 <0.5 2 2 1 0.86 - 1.25 2 1.48Hydroxide (OH) mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 - 97.3 <5.0 <5.0Magnesium (Mg) mg/L 3.7 7.9 8.1 19 4.2 9.1 8.9 14.1 10.4 8.9 11.4 11.6 7.88 - 10.9 11 13.7Potassium (K) mg/L 1.1 1.3 1 0.9 0.6 1 0.8 0.9 1.2 1.1 0.8 0.6 0.97 - 1.03 1.1 0.94Sodium (Na) mg/L 7 12 13 19 5 13 12 17 16 9 10 10 8.8 - 10.5 11 13.2Sulfate (SO4) mg/L 50 3.1 6 4.6 6.1 3.6 4.3 3.4 6 5.9 9.5 9.6 10.8 8.19 - 12.3 11.6 12.5Sulphide mg/L 0.002 0.006 <0.002 <0.002 <0.002 0.004 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.003 0.0023 <0.002 <0.002 <0.002 <0.002Nuttients and BODAmmonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 - <0.05 <0.05Biochemical Oxygen Demand mg/L <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 3 <2.0 <2.0 <2.0 <2.0 2 <2.0 <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - - - - - - - - - - - - - - -Nitrate+Nitrite-N mg/L <0.1 <0.1 <0.1 0.1 <0.1 <0.1 <0.1 0.2 <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1 0.179Nitrite (as N) mg/L 0.06 - - - - - - - - - - - - - - - - -Phosphorus, Total mg/L 0.05 0.141 0.008 0.006 0.004 0.029 0.008 0.005 0.006 0.004 0.025 0.004 0.003 0.0074 0.01 0.01 0.004 0.0024Phosphorus, Total Dissolved mg/L 0.05 0.012 0.003 0.003 0.002 0.006 0.004 0.002 0.002 0.001 0.004 0.002 0.002 0.0035 - 0.01 0.002 0.0028Total Kjeldahl Nitrogen mg/L 1 0.9 <0.2 <0.2 <0.2 0.4 0.3 0.2 <0.2 <0.2 0.3 <0.2 <0.2 0.36 0.32 <0.2 <0.2 <0.2Total MetalsAluminum (Al) mg/L 0.1 5.02 0.121 0.212 0.0249 1.12 0.131 0.0482 0.105 0.0752 0.63 0.0311 0.0095 0.142 0.602 0.0101 0.0247 0.0171Antimony (Sb) mg/L 0.000169 8.24E-05 0.0000635 0.0000586 0.0000955 0.0000884 0.0000709 0.0000621 0.0000644 0.0000792 0.0000701 0.0000521 0.0000724 0.0000951 0.0000581 0.0000683 0.0000506Arsenic (As) mg/L 0.005 0.00175 0.000735 0.000559 0.000388 0.000664 0.000723 0.000528 0.000483 0.000449 0.00048 0.000413 0.000299 0.000313 0.000569 0.000348 0.000308 0.000324Barium (Ba) mg/L 5 0.146 0.0881 0.0789 0.143 0.0664 0.0949 0.0921 0.136 0.112 0.0793 0.0906 0.0898 0.0644 0.0965 0.0857 0.0915 0.0915Beryllium (Be) mg/L 0.000169 <0.00001 <0.00001 <0.00001 0.0000444 <0.00001 <0.00001 <0.00001 <0.00001 0.0000285 <0.00001 <0.00001 <0.00001 0.0000208 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L 0.0000389 <0.00001 <0.00001 <0.00001 0.000024 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00811 0.0103 0.0101 0.0144 0.00608 0.00983 0.00886 0.0112 0.0101 0.0081 0.00588 0.00647 0.00563 0.0108 0.00698 0.00804 0.00757Cadmium (Cd) mg/L calculated 0.000103 <0.000006 0.0000077 <0.000006 0.0000343 0.0000106 0.0000067 <0.000006 0.0000089 0.0000184 <0.000006 0.0000062 0.0000077 0.000012 <0.000006 0.0000705 <0.000006Chlorine (Cl) mg/L <0.3 <0.3 <0.3 0.858 <0.3 <0.3 0.451 0.562 <0.3 0.764 1.07 1.33 0.494 0.841 0.92 1.26 1.27Chromium (Cr) mg/L 0.001 0.0064 <0.0003 <0.0003 <0.0003 0.0015 <0.0003 <0.0003 <0.0003 <0.0003 0.00108 <0.0003 <0.0003 <0.0003 0.00083 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.00169 5.23E-05 0.0000923 0.00005 0.000435 0.0000763 0.00005 0.0000604 0.00005 0.000318 0.00005 0.00005 0.0000602 0.000181 0.00005 0.00005 0.00005Copper (Cu) mg/L calculated 0.00506 0.000184 0.000493 0.000554 0.00208 0.00132 0.000762 0.000689 0.000523 0.000966 0.000452 0.000408 0.000665 0.0011 0.000299 0.000791 0.000339Iron (Fe) mg/L 0.3 4.11 0.17 0.312 0.143 1.12 0.173 0.134 0.269 0.161 0.682 0.0655 0.0772 0.169 0.45 0.0416 0.0623 0.0806Lead (Pb) mg/L calculated 0.00281 0.0000209 <0.000006 0.0000244 0.000546 0.000107 0.0000305 0.0000529 0.0000379 0.000352 0.000034 0.0000268 0.0000692 0.00024 0.0000088 0.000225 0.000126


Page 3 of 8

Table A2.2 Cont'd.

LUC LUC LUC LC LUC LUC LUC LUC LUC MC MC MC MC MC MC MC MC2007 2007 2007 2008 2008 2008 2008 2008 2009 2008 2008 2008 2009 2009 2009 2009 2010

Spring Summer Fall Winter Spring Summer Fall Winter Winter Spring Summer Fall Spring Summer Fall Winter Winter

Lithium (Li) mg/L 0.87 0.00345 0.00378 0.00286 0.00616 0.00172 0.00269 0.00269 0.0045 0.00377 0.00209 0.00416 0.00427 0.00269 0.00247 0.00608 0.00486 0.0037Manganese (Mn) mg/L 0.149 0.026 0.0275 0.0275 0.0335 0.0243 0.0223 0.0698 0.0319 0.031 0.00906 0.00767 0.0105 0.0213 0.00864 0.0109 0.0107Mercury (Hg)-Trace ng/L 5 11 <1.2 1.7 <1.2 8.7 <1.2 <1.2 <1.2 <1.2 4.1 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.000338 0.000688 0.00059 0.000849 0.000354 0.000783 0.000711 0.000809 0.00072 0.000762 0.00112 0.00104 0.000789 0.000863 0.00119 0.00112 0.00115Nickel (Ni) mg/L calculated 0.00542 <0.00006 0.00049 <0.00006 0.00112 0.00028 0.00009 0.00012 <0.00006 0.000716 <0.00006 <0.00006 0.000157 0.000607 <0.00006 <0.00006 <0.00006Selenium (Se) mg/L 0.001 0.000231 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000204 <0.0002 0.000329 0.000369 0.000301 0.000272 0.000366 0.000281 0.000421 0.000338Silver (Ag) mg/L 0.0001 0.0000638 <0.000005 <0.000005 <0.000005 0.0000093 0.000006 0.0000062 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 0.0000053 0.0000161 <0.000005 <0.000005 0.000007Strontium (Sr) mg/L 0.11 0.237 0.192 0.478 0.104 0.221 0.211 0.303 0.326 0.277 0.383 0.368 0.28 0.227 0.446 0.464 0.427Sulphur mg/L <0.6 <0.6 0.641 3.96 1.51 1.03 1.56 4.25 1.67 3.1 3.72 3.81 2.64 5.54 3.57 4.22 3.53Thallium (Tl) mg/L 0.0008 0.000102 0.000005 0.000005 0.000003 0.0000207 0.0000063 0.0000049 0.0000032 <0.000003 0.0000095 0.0000034 <0.000003 0.0000046 0.0000116 <0.000003 <0.000003 <0.000003Thorium mg/L 0.00105 0.00003 0.00003 0.00003 0.000266 0.00003 0.00003 0.00003 0.00003 0.0000963 0.00003 0.00003 0.00003 0.00009 0.00003 0.00003 0.00003Tin (Sn) mg/L 0.0000917 <0.00007 <0.00007 0.00115 <0.00007 <0.00007 <0.00007 0.00592 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 0.000339 <0.00007Titanium (Ti) mg/L 0.100 0.114 0.003 0.00531 0.00164 0.0265 0.0049 0.0022 0.00244 0.00271 0.0164 0.00147 0.00128 0.00351 0.0107 0.00108 0.00179 0.00129Uranium (U) mg/L 0.015 0.000493 0.000434 0.000392 0.00126 0.000243 0.000562 0.000519 0.000965 0.000749 0.000579 0.000838 0.000762 0.000523 0.0004 0.000828 0.000865 0.000844Vanadium (V) mg/L 0.0118 0.000585 0.000642 0.000222 0.00262 0.000604 0.000333 0.000393 0.000319 0.00173 0.000326 0.00022 0.000551 0.00142 0.000214 0.000242 0.0001Zinc (Zn) mg/L 0.030 0.0199 <0.003 <0.003 <0.003 0.00337 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.132 0.00569 0.00586 <0.001 0.133 0.0061 0.00314 0.00146 0.00131 0.0142 0.00367 0.00227 0.00845 0.014 0.00211 0.00142 <0.001Antimony (Sb) mg/L 0.000167 8.16E-05 0.0000629 0.000058 0.0000945 0.0000875 0.0000702 0.0000615 0.0000638 0.0000784 0.0000694 0.0000516 0.0000717 0.0000941 0.0000575 0.0000676 0.0000501Arsenic (As) mg/L 0.005 0.000493 0.000665 0.000497 0.000285 0.000403 0.00067 0.0004 0.000356 0.000322 0.00027 0.000318 0.000293 0.000246 0.000382 0.000307 0.000232 0.000263Barium (Ba) mg/L 5 0.0501 0.0833 0.0729 0.133 0.0484 0.0915 0.0848 0.128 0.104 0.0659 0.08 0.0873 0.0597 0.0826 0.0836 0.0884 0.0879Beryllium (Be) mg/L 0.0000209 <0.00001 <0.00001 <0.00001 0.000016 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 0.0000238 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00646 0.0102 0.00918 0.0137 0.00572 0.00948 0.00828 0.0103 0.00886 0.00679 0.00519 0.00578 0.0049 0.00964 0.00584 0.00645 0.00554Cadmium (Cd) mg/L calculated 0.000014 <0.000006 <0.000006 0.0000093 0.0000066 0.0000078 0.0000066 0.0000098 <0.000006 0.0000067 <0.000006 <0.000006 <0.000006 0.000006 <0.000006 0.0000309 <0.000006Chlorine (Cl) mg/L - <0.3 <0.3 <0.3 0.849 <0.3 <0.3 0.446 0.556 <0.3 0.76 0.949 1.32 0.479 0.833 0.879 1.17 1.26Chromium (Cr) mg/L 0.001 0.000498 <0.0003 <0.0003 <0.0003 0.00038 <0.0003 <0.0003 <0.0003 <0.0003 0.000555 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.000095 0.000023 0.0000438 <0.00001 0.0000967 0.0000314 0.0000267 0.0000351 0.0000131 0.0000585 0.0000154 <0.00001 0.0000207 0.000017 <0.00001 <0.00001 0.0000188Copper (Cu) mg/L calculated 0.00163 <0.0001 0.000395 0.000548 0.00181 0.00131 0.000761 0.000682 0.000518 0.000956 0.000447 0.000386 0.000598 0.000724 0.000296 0.000488 0.000276Iron (Fe) mg/L 0.3 0.176 0.0262 0.135 <0.004 0.159 0.0194 0.0665 <0.004 <0.004 0.0299 <0.004 0.0246 0.046 0.0194 0.0045 <0.004 0.0124Lead (Pb) mg/L calculated 0.0000948 <0.000006 <0.000006 0.0000088 0.0000582 0.0000297 0.0000111 0.000008 <0.000006 0.0000508 0.0000207 0.000009 0.0000685 0.0000205 <0.000006 0.0000252 0.0000158Lithium (Li) mg/L 0.87 0.00155 0.00374 0.00283 0.0057 0.00164 0.00256 0.00256 0.00423 0.00359 0.00134 0.004 0.00423 0.00219 0.00214 0.00594 0.00481 0.00288Manganese (Mn) mg/L 0.0114 0.012 0.0199 0.023 0.0136 0.0166 0.0169 0.0597 0.0256 0.012 0.00607 0.00593 0.00331 0.00192 0.00719 0.00812 0.00556Molybdenum (Mo) mg/L 0.073 0.000335 0.000681 0.000585 0.000812 0.00035 0.000775 0.00067 0.000706 0.000703 0.000754 0.00103 0.00104 0.000753 0.000854 0.00115 0.00112 0.00114Nickel (Ni) mg/L calculated 0.00103 <0.00006 0.000322 <0.00006 <0.00006 0.000187 <0.00006 0.000119 <0.00006 0.000197 <0.00006 <0.00006 0.000111 0.000133 <0.00006 <0.00006 <0.00006Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000326 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000413 0.000335Silver (Ag) mg/L 0.0001 0.0000063 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L 0.109 0.235 0.19 0.444 0.104 0.22 0.199 0.289 0.309 0.27 0.345 0.357 0.267 0.216 0.424 0.453 0.411Sulphur mg/L <0.6 <0.6 0.621 3.43 1.5 0.935 1.52 3.76 1.4 3.05 3.18 3.78 2.61 5.36 3.31 4.1 3.39Thallium (Tl) mg/L 0.0008 0.0000095 0.0000036 0.000003 <0.000003 0.0000079 0.0000049 0.0000044 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 0.0000032 0.0000048 <0.000003 <0.000003 <0.000003Thorium mg/L 0.000104 <0.00003 <0.00003 <0.00003 0.000135 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003Tin (Sn) mg/L <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 0.000312 <0.00007Titanium (Ti) mg/L 0.100 0.00691 0.00114 0.00111 0.000866 0.00611 0.00118 0.001 0.001 0.00117 0.00118 0.00086 0.00125 0.00105 0.00163 0.000878 0.00102 0.001Uranium (U) mg/L 0.015 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 <0.0002Zinc (Zn) mg/L 0.030 0.00303 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline valuesCadmium (mg/L) 0.000026 0.000045 0.000043 0.000076 0.000025 0.000048 0.000047 0.000067 0.000055 0.000043 0.000053 0.000053 0.000040 0.000053 0.000053 0.000053 0.000062Copper (mg/L) 0.001849 0.003210 0.003056 0.005386 0.001807 0.003401 0.003363 0.004747 0.003908 0.003095 0.003777 0.003777 0.002822 0.003777 0.003777 0.003777 0.004422Lead (mg/L) 0.002206 0.005016 0.004662 0.010843 0.002131 0.005467 0.005376 0.008983 0.006724 0.004750 0.006393 0.006393 0.004141 0.006393 0.006393 0.006393 0.008082nickel (mg/L) 0.076807 0.125432 0.120062 0.198729 0.075245 0.132044 0.130730 0.177613 0.149403 0.121411 0.144966 0.144966 0.111861 0.144966 0.144966 0.144966 0.166756<Bold indicates value is below detection limitIndicates value is above applicable guideline


Page 4 of 8

Table A2.2 Cont'd.

UTPC UTPC UTPC UTPC UTPC UTPC UTPC BRC BRC BRC BRC PRC PRC PRC2008 2008 2008 2009 2009 2009 2009 2010 2010 2010 2011 2010 2010 2010

Spring Summer Fall Spring Summer Fall Winter Spring Summer Fall Winter Spring Summer Fall

Conventional VariablesAlkalinity, Total (as CaCO3) mg/L 59 140 137 57.2 - 133 223 55 99.2 81.3 147 79.2 127 113Color, True T.C.U. - 37 43 - - - 7 72 48 49 26 67 53 54Conductivity (EC) uS/cm 113 269 243 119 - 254 404 111 199 167 268 158 247 225Dissolved Organic Carbon mg/L 15 9 9 14.9 17.2 10.1 4 13 9.8 9.5 5.7 14.7 13.1 13.3Dissolved Oxygen mg/L 5 9.8 - - 11.29 9.3 9.5 - 10.2 6.9 10.4 7.4 10.6 4.21 9.6Hardness (as CaCO3) mg/L 53 123 119 53.8 - 114 183 46.5 79.7 68 96.9 67.6 102 93.2pH pH 6.5-9 7.9 8.2 8.2 7.53 - 8.12 8.1 8.01 8.11 8.09 8.19 8.06 8.07 8.16Temperature oC 6.2 11.2 - 0.12 8.4 1.7 - - 8.63 1 0.4 - 19.61 17Total Dissolved Solids mg/L 90 180 166 63.6 105 150 242 105 134 125 160 120 167 161Total Organic Carbon mg/L 15 9 9 14.9 16.8 10.3 3 12.8 12.4 10 5.5 14.5 22 12.9Total Suspended Solids mg/L <3.0 <3.0 <3.0 <3.0 <3.0 155 <3.0 <3.0 3 <3.0 3 <3.0 <3.0 <3.0Turbidity NTU 3.5 0.01 - 2.2 - - - - 2.7 - - - 0.43 -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - 0.5 0.5 0.5 - 2.5 0.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Oil and Grease mg/L 0.05 - - - 0.05 0.05 - - - - - - - -Naphthenic Acids mg/L <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 0.004 0.003 0.004 0.0047 0.0051 0.003 0.001 0.0023 0.0036 0.0024 0.0012 0.0034 0.002 0.0029Mojor IonsBicarbonate (HCO3) mg/L 72 171 167 69.7 - 162 272 67.1 121 99.2 180 96.7 155 138Calcium (Ca) mg/L 15.7 36.2 35.1 15.9 - 34.2 55.2 14.3 24.5 20.7 29.9 19.4 29.4 26.8Carbonate (CO3) mg/L <5.0 <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 1 1 <0.5 <0.5 - <0.5 2 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5Hydroxide (OH) mg/L <5.0 <5.0 <5.0 <5.0 - 102 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L 3.3 7.8 7.5 3.42 - 6.94 10.9 2.62 4.51 3.97 5.39 4.66 7.05 6.39Potassium (K) mg/L 0.5 0.7 0.7 0.76 - 0.71 1 0.54 0.94 0.63 0.79 0.54 0.66 <0.5Sodium (Na) mg/L 5 12 11 6.3 - 10.2 18 7.6 13.7 11.2 19.5 9.5 17.7 14Sulfate (SO4) mg/L 50 2 2.6 1.2 2.86 - 1.38 3.5 2.47 1.9 2.03 2.65 3.6 2.72 2.05Sulphide mg/L 0.002 0.005 <0.002 0.004 0.0033 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.0021 <0.002 <0.002Nuttients and BODAmmonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Biochemical Oxygen Demand mg/L <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 4.9 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 - - - - - - - 0.117 <0.05 <0.05 0.095 <0.05 <0.05 <0.05Nitrate+Nitrite-N mg/L <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1 0.117 <0.071 <0.071 0.095 <0.071 <0.071 0.355Nitrite (as N) mg/L 0.06 - - - - - - - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Phosphorus, Total mg/L 0.05 0.012 0.009 0.009 0.012 0.0113 0.01 0.006 0.0218 0.0147 0.0116 0.0154 0.0093 0.01 0.011Phosphorus, Total Dissolved mg/L 0.05 0.005 0.005 0.006 0.0062 0.0051 0.01 0.002 0.0122 0.0072 0.0076 0.0085 0.009 0.0086 0.0072Total Kjeldahl Nitrogen mg/L 1 0.4 0.5 0.3 0.57 - 0.3 <0.2 0.99 0.85 0.31 <0.2 0.87 1.21 0.4Total MetalsAluminum (Al) mg/L 0.1 0.316 0.0556 0.116 0.202 0.188 0.0409 0.0442 1.26 0.213 0.266 0.061 0.191 0.0907 0.115Antimony (Sb) mg/L 0.0000528 0.000058 0.0000464 0.0000485 0.0000565 0.0000459 0.000049 9.01E-05 0.0000857 0.0000665 0.0000446 0.0000643 0.0000564 0.0000492Arsenic (As) mg/L 0.005 0.000486 0.000899 0.000817 0.000472 0.000727 0.000742 0.000779 0.000635 0.00118 0.000637 0.00066 0.000493 0.000672 0.000543Barium (Ba) mg/L 5 0.0425 0.0878 0.081 0.0368 0.048 0.0724 0.136 0.0366 0.0507 0.0378 0.0551 0.026 0.0397 0.0322Beryllium (Be) mg/L 0.0000182 <0.00001 <0.00001 0.0000152 0.0000132 <0.00001 <0.00001 4.33E-05 0.0000108 0.0000169 <0.00001 0.0000142 0.0000115 0.0000147Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.0059 0.00902 0.00818 0.00503 0.0101 0.00758 0.013 0.00653 0.00994 0.00747 0.0116 0.00562 0.00796 0.00754Cadmium (Cd) mg/L calculated 0.0000068 0.0000076 0.0000064 0.0000076 0.0000083 <0.000006 0.0000142 0.00001 0.0000107 0.0000071 0.0000064 <0.000006 <0.000006 <0.000006Chlorine (Cl) mg/L <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.336 0.439 0.369 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 0.000417 <0.0003 0.000319 <0.0003 0.000413 <0.0003 <0.0003 0.000881 <0.0003 0.000309 <0.0003 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.000145 0.000056 0.0000814 0.0000967 0.0000885 0.00005 0.0000507 0.000208 0.000113 0.000107 0.0000882 0.00005 0.00005 0.00005Copper (Cu) mg/L calculated 0.0009 0.00073 0.000658 0.000779 0.000735 0.00047 0.000341 0.00191 0.00117 0.00105 0.000791 0.000349 0.000238 0.000231Iron (Fe) mg/L 0.3 0.384 0.259 0.365 0.309 0.31 0.282 0.31 0.717 0.595 0.518 0.813 0.144 0.12 0.116Lead (Pb) mg/L calculated 0.000126 0.0000506 0.0000693 0.0000857 0.0000872 0.0000324 0.0000327 0.000214 0.000113 0.0000921 0.0000473 0.0000789 0.000035 0.0000369


Page 5 of 8

Table A2.2 Cont'd.

UTPC UTPC UTPC UTPC UTPC UTPC UTPC BRC BRC BRC BRC PRC PRC PRC2008 2008 2008 2009 2009 2009 2009 2010 2010 2010 2011 2010 2010 2010

Spring Summer Fall Spring Summer Fall Winter Spring Summer Fall Winter Spring Summer Fall

Lithium (Li) mg/L 0.87 0.00124 0.00224 0.00234 0.000919 0.00362 0.00359 0.00532 0.00109 0.00187 0.00194 0.00345 0.00204 0.00301 0.00301Manganese (Mn) mg/L 0.0157 0.0247 0.0311 0.0197 0.0192 0.0355 0.0377 0.0207 0.0365 0.0345 0.0685 0.00437 0.00902 0.00819Mercury (Hg)-Trace ng/L 5 2.4 <1.2 <1.2 1.4 <1.2 <1.2 <1.2 4.6 1.5 2.2 <1.2 1.3 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.000376 0.000906 0.000797 0.000369 0.000369 0.000734 0.00134 0.00049 0.000812 0.000537 0.000732 0.000461 0.000667 0.000487Nickel (Ni) mg/L calculated 0.0004 0.000263 0.000279 0.00057 0.00065 0.000188 <0.00006 0.00152 0.00105 0.000722 0.000429 0.000406 0.000221 <0.00006Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 0.0000063 0.0000073 <0.000005 <0.000005 0.0000357 0.0000092 0.0000142 <0.000005 0.0000098 0.0000106 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L 0.0848 0.193 0.177 0.087 0.109 0.185 0.357 0.0841 0.147 0.123 0.196 0.126 0.203 0.18Sulphur mg/L 0.83 <0.6 0.997 0.76 <0.6 <0.6 1.25 0.872 <0.6 0.606 0.909 1.28 0.863 0.62Thallium (Tl) mg/L 0.0008 0.0000055 <0.000003 0.0000035 0.0000039 <0.000003 <0.000003 <0.000003 0.0000118 0.0000067 <0.000003 0.0000041 <0.000003 0.0000123 <0.000003Thorium mg/L 0.0000637 0.00003 0.00003 0.0000327 0.0000393 0.00003 0.00003 0.000136 0.0000469 0.0000438 0.00003 0.0000335 0.0000359 0.00003Tin (Sn) mg/L <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 0.000522 <0.00007Titanium (Ti) mg/L 0.100 0.00582 0.00227 0.00329 0.00377 0.00366 0.00163 0.00233 0.0222 0.00457 0.00603 0.00245 0.00348 0.00253 0.00278Uranium (U) mg/L 0.015 0.000105 0.000418 0.000317 0.0000908 0.000105 0.000233 0.000786 0.0000883 0.000142 0.0000896 0.000269 0.000108 0.000272 0.000148Vanadium (V) mg/L 0.000744 0.000339 0.000436 0.000545 0.000544 0.000243 0.000216 0.00171 0.000796 0.000665 0.000285 0.000255 0.000205 0.0001Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.0487 0.00925 0.0075 0.0297 0.0321 0.00713 0.00134 0.405 0.0186 0.083 0.00839 0.102 0.0318 0.0524Antimony (Sb) mg/L 0.0000523 0.0000574 0.0000459 0.000048 0.0000559 0.0000454 0.0000485 8.92E-05 0.0000848 0.0000658 0.0000442 0.0000637 0.0000558 0.0000487Arsenic (As) mg/L 0.005 0.000395 0.000764 0.000697 0.000353 0.00061 0.000716 0.000463 0.000449 0.000965 0.000527 0.000495 0.000458 0.000603 0.000496Barium (Ba) mg/L 5 0.0382 0.0805 0.0761 0.0334 0.0421 0.0686 0.125 0.0295 0.0452 0.0345 0.0505 0.0235 0.0377 0.0312Beryllium (Be) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.000022 <0.00001 0.0000114 <0.00001 0.0000126 0.0000113 0.0000146Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00508 0.00862 0.00742 0.00462 0.0087 0.00714 0.0118 0.00608 0.00942 0.00627 0.0101 0.00522 0.00722 0.0062Cadmium (Cd) mg/L calculated 0.0000062 0.0000075 <0.000006 <0.000006 <0.000006 <0.000006 0.00001 0.0000063 0.0000069 <0.000006 <0.000006 <0.000006 0.0000077 <0.000006Chlorine (Cl) mg/L - <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.333 0.405 0.314 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000391 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000708 0.0000412 0.0000466 0.0000266 0.0000192 0.0000389 0.0000223 0.000112 0.0000507 0.0000826 0.0000739 0.0000236 <0.00001 0.0000137Copper (Cu) mg/L calculated 0.000891 0.000723 0.000582 0.00071 0.000728 0.000465 0.000338 0.00157 0.00103 0.00105 0.000773 0.000346 0.000238 0.000229Iron (Fe) mg/L 0.3 0.135 0.13 0.206 0.13 0.147 0.215 0.0187 0.295 0.327 0.315 0.454 0.0828 0.0499 0.0631Lead (Pb) mg/L calculated 0.0000449 0.0000362 0.0000301 0.0000282 0.0000468 0.0000189 0.0000077 0.0000786 0.000043 0.0000464 0.0000141 0.0000249 <0.000006 0.0000195Lithium (Li) mg/L 0.87 0.001 0.00211 0.00224 0.00068 0.00322 0.00348 0.00523 0.00103 0.00185 0.00158 0.00332 0.00199 0.00293 0.00298Manganese (Mn) mg/L 0.0106 0.019 0.0211 0.00246 0.00179 0.033 0.0273 0.0121 0.0114 0.0302 0.0621 0.00101 0.000847 0.0033Molybdenum (Mo) mg/L 0.073 0.000348 0.00087 0.000793 0.000367 0.000363 0.000696 0.00128 0.000463 0.000804 0.000522 0.000725 0.000436 0.000655 0.000485Nickel (Ni) mg/L calculated 0.000255 0.00026 0.000275 0.000454 0.000497 0.000177 <0.00006 0.00117 0.000889 0.000654 0.000389 0.000357 0.000174 <0.00006Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 0.0000081 <0.000005 0.0000064 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L 0.0835 0.182 0.168 0.0848 0.102 0.18 0.334 0.08 0.141 0.117 0.184 0.121 0.198 0.175Sulphur mg/L 0.82 <0.6 0.987 0.747 <0.6 <0.6 1.02 0.871 <0.6 <0.6 0.842 1.25 0.854 0.618Thallium (Tl) mg/L 0.0008 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 0.0000061 0.0000057 <0.000003 0.000004 <0.000003 0.0000122 <0.000003Thorium mg/L 0.0000496 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 0.000107 <0.00003 0.0000341 <0.00003 0.0000332 0.0000355 <0.00003Tin (Sn) mg/L <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.0019 0.00124 0.00115 0.00136 0.00153 0.00119 0.00115 0.00902 0.00154 0.0038 0.00116 0.00268 0.0016 0.00199Uranium (U) mg/L 0.015 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline valuesCadmium (mg/L) 0.000019 0.000040 0.000038 0.000019 0.000040 0.000037 0.000056 0.000017 0.000027 0.000024 0.000032 0.000024 0.000034 0.000031Copper (mg/L) 0.001375 0.002822 0.002744 0.001392 0.002822 0.002645 0.003963 0.001229 0.001948 0.001701 0.002302 0.001692 0.002405 0.002227Lead (mg/L) 0.001418 0.004141 0.003970 0.001445 0.004141 0.003759 0.006867 0.001200 0.002383 0.001947 0.003057 0.001933 0.003263 0.002909nickel (mg/L) 0.058993 0.111861 0.109086 0.059669 0.111861 0.105584 0.151292 0.053409 0.080438 0.071295 0.093316 0.070976 0.097026 0.090596<Bold indicates value is below detection limitIndicates value is above applicable guideline


Page 6 of 8

Table A2.2 Cont'd.

UCNR UCNR UCNR UCNR UTWC-E UTWC-E UTWC-E UTWC-W UTWC-W UTWC-W2010 2010 2010 2011 2010 2010 2010 2010 2010 2010

Spring Summer Fall Winter Spring Summer Fall Spring Summer Fall

Conventional VariablesAlkalinity, Total (as CaCO3) mg/L 126 166 162 254 98.8 144 111 48.3 85.8 67.9Color, True T.C.U. 48 45 37 27 55 58 42 73 44 51Conductivity (EC) uS/cm 272 351 348 533 186 276 215 98 173 146Dissolved Organic Carbon mg/L 10.7 13.8 9.7 9.6 15.8 17.1 14.7 13.1 11.3 10.7Dissolved Oxygen mg/L 5 9 6.28 10 7.02 5.65 2.84 7.2 10.4 7.65 10Hardness (as CaCO3) mg/L 121 158 159 231 88.1 128 94.3 41.4 62.5 55.3pH pH 6.5-9 8.28 8.28 8.34 8.17 8.08 7.79 8.23 7.92 8.11 7.99Temperature oC - 18.78 - 0.1 - 13.82 1 - 10.19 15Total Dissolved Solids mg/L 172 226 227 320 132 188 147 89 117 110Total Organic Carbon mg/L 11.8 17.7 9.8 10 15.7 17.5 14.9 14.5 9.4 9.9Total Suspended Solids mg/L <3.0 <3.0 <3.0 6 <3.0 4 <3.0 <3.0 <3.0 <3.0Turbidity NTU - - - - - 0.58 - - 0.83 -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Oil and Grease mg/L - - - - - - - - - -Naphthenic Acids mg/L <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Phenols (4AAP) mg/L 0.004 0.0059 0.0109 0.0022 0.0027 0.0048 0.0026 0.003 0.0031 0.003 0.0029Mojor IonsBicarbonate (HCO3) mg/L 153 203 194 309 120 175 135 59 105 82.9Calcium (Ca) mg/L 34 45.1 45 65.1 25.9 36.9 26.6 12.8 19.2 16.9Carbonate (CO3) mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 4.6 8 8.33 22.9 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5Hydroxide (OH) mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L 8.77 11 11.4 16.6 5.68 8.7 6.77 2.29 3.54 3.17Potassium (K) mg/L 0.96 1.05 0.95 1.63 1.5 <0.5 <0.5 1.5 0.66 0.5Sodium (Na) mg/L 13 16.3 15.8 22.1 7 9.6 7.7 7.4 13.7 10.3Sulfate (SO4) mg/L 50 9.27 6.26 7.23 9.14 1.02 <0.5 <0.5 3.14 2.55 2.5Sulphide mg/L 0.002 0.0031 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.0026 <0.002 <0.002Nuttients and BODAmmonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Biochemical Oxygen Demand mg/L <2.0 <2.0 <2.0 2.6 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Nitrate (as N) mg/L 13 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Nitrate+Nitrite-N mg/L <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071 <0.071Nitrite (as N) mg/L 0.06 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Phosphorus, Total mg/L 0.05 0.0117 0.0146 0.0129 0.0224 0.0055 0.0124 0.0101 0.009 0.0046 0.0065Phosphorus, Total Dissolved mg/L 0.05 0.005 0.0105 0.0076 0.0056 0.0041 0.0043 0.0024 0.0086 0.0039 0.004Total Kjeldahl Nitrogen mg/L 1 0.71 0.98 0.33 0.67 0.92 1.28 0.44 0.7 1.03 0.29Total MetalsAluminum (Al) mg/L 0.1 0.155 0.0934 0.0336 0.143 0.0178 0.0159 0.0117 0.51 0.0524 0.165Antimony (Sb) mg/L 0.0000395 0.0000433 0.0000286 0.0000571 0.0000189 0.0000157 1.48E-05 0.0000712 0.0000551 0.0000555Arsenic (As) mg/L 0.005 0.000375 0.00066 0.00031 0.000438 0.000757 0.00174 0.000812 0.000451 0.000512 0.000427Barium (Ba) mg/L 5 0.0611 0.0838 0.0668 0.112 0.0501 0.0872 0.0529 0.0234 0.0324 0.025Beryllium (Be) mg/L 0.000011 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.0000269 <0.00001 0.0000116Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00681 0.00978 0.00724 0.00696 0.00459 0.0054 0.00425 0.00599 0.00973 0.00743Cadmium (Cd) mg/L calculated <0.000006 <0.000006 <0.000006 0.0000109 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006Chlorine (Cl) mg/L 3.09 6.13 8.94 19.3 <0.3 <0.3 0.373 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000435 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000639 0.0000606 0.00005 0.000126 0.00005 0.000141 0.00005 0.000097 0.00005 0.00005Copper (Cu) mg/L calculated 0.00069 0.000331 0.00021 0.000393 0.000161 0.000163 0.000131 0.00118 0.000746 0.000757Iron (Fe) mg/L 0.3 0.203 0.295 0.145 0.6 0.23 0.951 0.398 0.321 0.13 0.198Lead (Pb) mg/L calculated 0.0000518 0.0000457 0.000135 0.0000762 <0.000006 0.0000138 <0.000006 0.0000826 0.0000163 0.0000415


Page 7 of 8

Table A2.2 Cont'd.

UCNR UCNR UCNR UCNR UTWC-E UTWC-E UTWC-E UTWC-W UTWC-W UTWC-W2010 2010 2010 2011 2010 2010 2010 2010 2010 2010

Spring Summer Fall Winter Spring Summer Fall Spring Summer Fall

Lithium (Li) mg/L 0.87 0.00347 0.00449 0.00397 0.00496 0.00198 0.00257 0.0015 0.000824 0.00171 0.00192Manganese (Mn) mg/L 0.0248 0.0341 0.0244 0.22 0.0124 0.105 0.059 0.00634 0.00528 0.00801Mercury (Hg)-Trace ng/L 5 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 4.7 1.6 2.3Molybdenum (Mo) mg/L 0.073 0.000272 0.00032 0.000244 0.000455 0.000142 0.00017 0.000102 0.000394 0.000665 0.000462Nickel (Ni) mg/L calculated 0.000295 0.000166 <0.00006 <0.00006 0.000145 <0.00006 <0.00006 0.001 0.000537 0.000488Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 0.0000054 0.0000082 <0.000005 <0.000005 0.0000086 <0.000005 <0.000005Strontium (Sr) mg/L 0.279 0.383 0.354 0.575 0.16 0.254 0.179 0.0479 0.107 0.0893Sulphur mg/L 3.5 2.29 2.57 3.97 <0.6 <0.6 <0.6 1.04 0.74 0.61Thallium (Tl) mg/L 0.0008 0.0000037 0.0000059 <0.000003 <0.000003 <0.000003 0.0000038 <0.000003 0.0000068 0.000003 0.0000075Thorium mg/L 0.00003 0.00003 0.00003 0.00003 0.00003 0.00003 0.00003 0.0000788 0.00003 0.0000517Tin (Sn) mg/L <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.00307 0.00259 0.00165 0.00439 0.000697 0.000978 0.000905 0.00745 0.00155 0.00404Uranium (U) mg/L 0.015 0.000163 0.000268 0.000228 0.000747 0.0000061 0.0000135 0.000008 0.0000614 0.000107 0.000066Vanadium (V) mg/L 0.000347 0.000366 0.0001 0.000362 0.0001 0.0001 0.0001 0.000713 0.00028 0.000358Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 0.00351 <0.003 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.00417 0.00361 0.00311 0.0025 0.00844 0.00447 0.00613 0.172 0.0206 0.0786Antimony (Sb) mg/L 0.0000391 0.0000429 0.0000283 0.0000565 0.0000187 0.0000155 1.47E-05 0.0000705 0.0000545 0.0000549Arsenic (As) mg/L 0.005 0.000304 0.000576 0.00027 0.000357 0.00063 0.00126 0.000618 0.000375 0.00047 0.000406Barium (Ba) mg/L 5 0.0555 0.0766 0.0628 0.107 0.0447 0.08 0.0484 0.0207 0.0307 0.0241Beryllium (Be) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.0000167 <0.00001 0.0000115Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00618 0.00837 0.00665 0.00658 0.00376 0.00455 0.00405 0.00578 0.00885 0.00649Cadmium (Cd) mg/L calculated <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006Chlorine (Cl) mg/L - 3 5.85 8.73 19.1 <0.3 <0.3 0.369 <0.3 <0.3 <0.3Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000337 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000228 0.0000306 0.00002 0.0000842 0.0000393 0.0000215 2.25E-05 0.0000667 0.0000235 0.0000433Copper (Cu) mg/L calculated 0.000391 0.000252 0.000208 0.000332 0.000159 0.000109 0.000102 0.00111 0.000739 0.000749Iron (Fe) mg/L 0.3 0.0599 0.166 0.0811 0.211 0.154 0.319 0.166 0.188 0.081 0.129Lead (Pb) mg/L calculated <0.000006 0.0000136 0.0000073 0.000011 <0.000006 <0.000006 <0.000006 0.000042 <0.000006 0.000026Lithium (Li) mg/L 0.87 0.0031 0.00436 0.00393 0.00491 0.00173 0.00253 0.00136 0.000816 0.00157 0.0019Manganese (Mn) mg/L 0.00455 0.00649 0.0163 0.195 0.00899 0.00144 0.0163 0.00325 0.00256 0.00642Molybdenum (Mo) mg/L 0.073 0.00025 0.000317 0.000225 0.00045 0.000127 0.000157 0.000102 0.000375 0.000658 0.000457Nickel (Ni) mg/L calculated 0.000193 0.000105 <0.00006 <0.00006 0.000119 <0.00006 <0.00006 0.000896 0.00049 0.000458Selenium (Se) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 0.0000052 <0.000005 <0.000005Strontium (Sr) mg/L 0.271 0.371 0.341 0.571 0.145 0.245 0.169 0.0456 0.104 0.0893Sulphur mg/L 3.3 2.14 2.54 2.99 <0.6 <0.6 <0.6 1.03 0.734 0.604Thallium (Tl) mg/L 0.0008 <0.000003 0.0000052 <0.000003 <0.000003 <0.000003 0.0000037 <0.000003 0.0000045 0.000003 0.0000074Thorium mg/L <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 0.000078 <0.00003 0.0000512Tin (Sn) mg/L <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.000773 0.00096 0.000984 0.00133 0.000596 0.000832 0.000784 0.00554 0.0012 0.00297Uranium (U) mg/L 0.015 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003 <0.000003Vanadium (V) mg/L <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline valuesCadmium (mg/L) 0.000039 0.000049 0.000049 0.000068 0.000030 0.000041 0.000031 0.000016 0.000022 0.000020Copper (mg/L) 0.002783 0.003496 0.003515 0.004836 0.002122 0.002920 0.002249 0.001113 0.001583 0.001425Lead (mg/L) 0.004055 0.005696 0.005741 0.009237 0.002708 0.004356 0.002953 0.001035 0.001749 0.001497nickel (mg/L) 0.110476 0.135311 0.135961 0.180591 0.086803 0.115301 0.091407 0.048896 0.066868 0.060929<Bold indicates value is below detection limitIndicates value is above applicable guideline


Page 8 of 8

Table A2.3 Water quality data for Regional Study Area watercourses.

EM-1 EM-1 EM-1 EM-2 EM-2 EM-2 EM-2 EM-2 EM-2 EM-3 EM-3 EM-3 EM-3 EM-3 EM-32006 2006 2006 1997 1997 1997 1998 1998 2006 1997 1997 1997 1998 1998 2006

Spring Fall Winter Spring Summer Fall Spring Summer Winter Spring Summer Fall Spring Summer WinterConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 112 81 144 84 101 135 87 92 1158 99 121 151 107 103 174Color, True T.C.U. - 15 35 7 49 37 15 20 44 8 50 36 15 20 55 10Conductivity (EC) uS/cm - 217 188 296 167 191 252 174 183 - 196 226 278 218 208 355Dissolved Organic Carbon mg/L - 4 9 3 - - - - - 3 - - - - - 3Dissolved Oxygen mg/L 5 8.23 10.62 12.95 11.5 8.9 12.8 - - 12.91 13.1 9.6 13.3 - - 12.91Hardness (as CaCO3) mg/L - 101 81 126 68 87 120 73 82 141 81 107 139 94 97 160pH pH 6.5-9 8.3 8.2 8.1 8.07 8.22 8.16 8 8.22 8.03 8.13 8.2 8.2 8.15 8.24 8.2Temperature oC 13.91 7.46 0.05 - - - - - 0.04 - - - - - 0.04Total Dissolved Solids mg/L - 132 127 174 90 107 148 94 101 186 106 130 167 118 115 188Total Organic Carbon mg/L - 4 9 3 8 8 4.2 9 8.1 3 8.4 8.2 5 7.3 9 3Total Suspended Solids mg/L 5 27 4 7 7 <1.0 10 11 3 7 5 2 <1.0 6 4Turbidity NTU - - 12.6 - - - - - 11.4 - - - - - 11.4General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - 0.5 - - - - - 0.5 - - - - - -Oil and Grease mg/L - - - - - - - - - - - - - - - -Phenols (4AAP) mg/L 0.004 - <0.001 <0.001 0.002 <0.001 0.001 <0.001 <0.001 <0.001 0.002 <0.001 <0.001 <0.001 <0.001 <0.001Naphthenic Acids mg/L - - - - - - - - - <1.0 - - - - - <1.0Major IonsBicarbonate (HCO3) mg/L - 135 99 175 103 123 164 106 112 193 120 147 184 130 126 213Calcium (Ca) mg/L - 30.2 24.2 38.1 20.6 26.6 36.6 22.5 25.2 42.9 24.9 32.6 42.4 29 29.7 48.1Carbonate (CO3) mg/L - <5.0 <5.0 <5.0 - - - - - <5.0 - - - - - <5.0Chloride (Cl) mg/L 230 1 2 2 1.6 1.1 2 1.3 3.5 2 2.6 2.4 2.4 2.6 4.4 4Hydroxide (OH) mg/L - <5.0 <5.0 <5.0 - - - - - - - - - - - -Magnesium (Mg) mg/L - 6.1 5.1 7.5 3.9 4.9 6.8 4.1 4.8 8.2 4.7 6.3 8.1 5.2 5.4 9.1Potassium (K) mg/L - 0.8 0.8 0.9 <1.0 <1.0 2.11 - <1.0 0.7 <1.0 <1.0 2.59 - <1.0 1.3Sodium (Na) mg/L - 10 11 15 9.2 9 14.2 9.5 7.1 17 10.2 10 14.4 12.2 8.1 21Sulfate (SO4) mg/L 50 6.2 11.1 9 4 4.2 5.8 3.5 4.4 8.4 4.2 5.5 6.2 4.2 4.7 10.2Sulphide mg/L 0.002 <0.002 <0.002 <0.002 - - - - - <0.002 - - - - - <0.002Nutrients and BODBiochemical Oxygen Demand mg/L - <2.0 <2.0 <2.0 - - - - - - - - - - - -Ammonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.065 <0.05 <0.05 <0.05 0.06 <0.05Nitrate (as N) mg/L 13 <0.1 <0.1 0.4 - - - - - - - - - - - -Nitrate+Nitrite-N mg/L - - - - 0.08 <0.05 <0.05 0.45 <0.05 0.4 0.06 <0.05 <0.05 0.06 0.11 0.3Nitrite (as N) mg/L 0.06 - - - - - - - - - - - - - - -Phosphorus, Total mg/L 0.05 0.006 0.035 0.004 <0.05 <0.05 <0.05 <0.05 <0.05 0.004 <0.05 <0.05 <0.05 <0.05 <0.05 0.004Phosphorus, Total Dissolved mg/L 0.05 0.002 0.006 0.002 - - - - - 0.002 - - - - - -Total Kjeldahl Nitrogen mg/L 1 <0.2 0.3 <0.2 0.2 0.16 <0.05 0.33 0.14 <0.2 0.15 <0.05 0.12 0.19 0.18 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.267 1.83 0.0996 0.522 0.225 0.104 0.679 0.533 0.0723 0.379 0.217 0.081 0.226 0.274 0.0268Antimony (Sb) mg/L - 0.000112 0.00016 0.00011 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0000978 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000084Arsenic (As) mg/L 0.005 0.000456 0.000953 0.000408 - - - - - 0.00037 - - - - - 0.000412Barium (Ba) mg/L 5 0.0844 0.0988 0.106 0.0578 0.0646 0.0811 0.063 0.0654 0.102 0.0604 0.0725 0.0791 0.0635 0.0651 0.105Beryllium (Be) mg/L <0.00001 0.0000751 <0.00001 0.0005 0.0005 0.0005 0.0005 0.0005 <0.00001 0.0005 0.0005 0.0005 0.0005 0.0005 <0.00001Bismuth (Bi) mg/L <0.00001 0.0000119 <0.00001 <0.007 <0.007 <0.007 <0.007 <0.007 <0.00001 <0.007 <0.007 <0.007 <0.007 <0.007 <0.00001Boron (B) mg/L 1.2 0.00959 0.0104 0.0129 <0.02 <0.02 <0.02 <0.02 - 0.0123 <0.02 <0.02 <0.02 <0.02 - 0.0116Cadmium (Cd) mg/L calculated 0.0000136 0.0000366 0.0000085 - - - - - 0.0000096 - - - - - 0.0000117Chlorine (Cl) mg/L - 0.573 0.516 0.823 - - - - - - - - - - - 3.71Chromium (Cr) mg/L 0.001 0.00144 0.00272 <0.0003 0.0009 <0.0008 0.0009 <0.0008 0.0014 0.00037 <0.0008 0.0009 <0.0008 <0.0008 0.0013 <0.0003Cobalt (Co) mg/L 0.11 0.000079 0.000793 0.000042 <0.0007 <0.0007 <0.0007 0.0009 <0.0007 0.0000401 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 0.000033Copper (Cu) mg/L calculated 0.000785 0.00234 0.000402 0.001 <0.001 <0.001 <0.001 <0.001 0.00042 <0.001 0.002 <0.001 <0.001 <0.001 0.000461Iron (Fe) mg/L 0.3 0.22 1.81 0.14 0.33 0.293 0.139 0.634 0.19 0.131 0.28 0.35 0.204 0.272 0.23 0.154


Page 1 of 12

Table A2.3 Cont'd.

EM-1 EM-1 EM-1 EM-2 EM-2 EM-2 EM-2 EM-2 EM-2 EM-3 EM-3 EM-3 EM-3 EM-3 EM-32006 2006 2006 1997 1997 1997 1998 1998 2006 1997 1997 1997 1998 1998 2006

Spring Fall Winter Spring Summer Fall Spring Summer Winter Spring Summer Fall Spring Summer WinterLead (Pb) mg/L calculated 0.000118 0.000931 0.0000443 - <0.002 <0.002 <0.002 <0.002 0.0000381 0.002 <0.002 <0.002 0.003 <0.002 0.0000306Lithium (Li) mg/L 0.87 0.0028 0.00275 0.00414 0.00249 0.0031 0.00344 0.00348 0.004 0.00359 0.00291 0.00346 0.00379 0.004 0.003 0.00397Manganese (Mn) mg/L - 0.0106 0.0816 0.0183 0.0205 0.0234 0.0273 0.0449 0.0256 0.0257 0.019 0.314 0.034 0.0211 0.0331 0.0311Mercury (Hg)-Trace ng/L 5 <1.2 3.9 <1.2 - - - - - <1.2 - - - - - <1.2Molybdenum (Mo) mg/L 0.073 0.00125 0.00333 0.00199 <0.001 <0.001 0.001 <0.001 <0.001 0.00154 <0.001 0.001 <0.001 0.001 <0.001 0.00152Nickel (Ni) mg/L calculated 0.000351 0.00253 <0.00006 0.002 <0.001 <0.001 0.002 <0.001 <0.00006 0.002 0.002 <0.001 <0.001 <0.001 <0.00006Selenium (Se) mg/L 0.001 <0.0003 0.000458 0.000328 - - - - - 0.000326 - - - - - <0.0003Silver (Ag) mg/L 0.0001 <0.000005 0.0000205 <0.000005 - - - - - <0.000005 - - - - - <0.000005Strontium (Sr) mg/L - 0.237 0.166 0.351 0.156 0.195 0.241 0.149 0.177 0.338 0.184 0.233 0.262 0.184 1.42 0.367Sulphur mg/L - 1.1 3.41 3.41 1 1 - - 1 3.24 1 1 - 1 - 2.99Thallium (Tl) mg/L 0.0008 <0.000003 0.0000327 0.0000068 - - - - - 0.0000085 - - - - - 0.0000083Thorium mg/L - <0.00003 0.000153 <0.00003 - - - - - <0.00003 - - - - - <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 <0.003 <0.003 0.004 <0.003 <0.003 <0.00007 <0.003 <0.003 0.006 <0.003 <0.003 <0.00007Titanium (Ti) mg/L 0.100 0.00511 0.06 0.00523 0.0086 0.0061 <0.005 0.016 0.0087 0.00419 0.0086 0.0057 <0.005 0.0062 <0.005 0.00356Uranium (U) mg/L 0.015 0.000371 0.000494 0.000647 - - - - - 0.000663 - - - - - 0.000624Vanadium (V) mg/L - 0.000865 0.00505 0.000416 <0.001 <0.001 <0.001 0.002 <0.001 0.000364 <0.001 <0.001 <0.001 <0.001 <0.001 0.000219Zinc (Zn) mg/L 0.030 0.00717 0.00726 0.00339 <0.003 0.0054 0.0051 <0.003 <0.003 <0.003 <0.003 0.0046 <0.003 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.0175 0.126 0.00391 - - - - - 0.00258 - - - - - 0.00182Antimony (Sb) mg/L - 0.000112 0.000153 0.000109 - - - - - 0.0000968 - - - - - 0.0000832Arsenic (As) mg/L 0.005 0.000388 0.000432 0.000321 - - - - - 0.000295 - - - - - 0.000312Barium (Ba) mg/L 5 0.0753 0.0663 0.0974 - - - - - 0.0953 - - - - - 0.0985Beryllium (Be) mg/L <0.00001 <0.00001 <0.00001 - - - - - <0.00001 - - - - - <0.00001Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 - - - - - <0.00001 - - - - - <0.00001Boron (B) mg/L 1.2 0.00908 0.00841 0.0124 - - - - - 0.0108 - - - - - 0.0105Cadmium (Cd) mg/L calculated <0.000006 0.0000152 0.0000063 - - - - - 0.0000064 - - - - - 0.0000068Chlorine (Cl) mg/L - 0.561 0.516 0.808 - - - - - 2.03 - - - - - 3.51Chromium (Cr) mg/L 0.001 <0.0003 0.000336 <0.0003 - - - - - 0.00036 - - - - - <0.0003Cobalt (Co) mg/L 0.11 0.00005 0.0000618 0.0000178 - - - - - 0.0000152 - - - - - 0.0000182Copper (Cu) mg/L calculated 0.000528 0.000973 0.000366 - - - - - 0.000398 - - - - - 0.000456Iron (Fe) mg/L 0.3 0.0165 0.127 0.0111 - - - - - 0.0092 - - - - - 0.0279Lead (Pb) mg/L calculated 0.000018 0.0000828 <0.000006 - - - - - <0.000006 - - - - - 0.0000063Lithium (Li) mg/L 0.87 0.00263 0.00219 0.00369 - - - - - 0.00358 - - - - - 0.00392Manganese (Mn) mg/L - 0.00583 0.00743 0.0124 - - - - - 0.0183 - - - - - 0.022Molybdenum (Mo) mg/L 0.073 0.00122 0.00327 0.00197 - - - - - 0.00152 - - - - - 0.00147Nickel (Ni) mg/L calculated 0.00014 0.000519 <0.00006 - - - - - <0.00006 - - - - - <0.00006Selenium (Se) mg/L 0.001 <0.0003 0.000324 <0.0003 - - - - - <0.0003 - - - - - <0.0003Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 - - - - - <0.000005 - - - - - <0.000005Strontium (Sr) mg/L - 0.225 0.156 0.348 - - - - - 0.317 - - - - - 0.351Sulphur mg/L - 1.02 3.35 3.27 - - - - - 2.45 - - - - - 2.96Thallium (Tl) mg/L 0.0008 0.0000072 0.0000077 0.0000055 - - - - - 0.0000084 - - - - - 0.0000082Thorium mg/L - 0.00005 0.0000453 <0.00003 - - - - - <0.00003 - - - - - <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 - - - - - <0.00007 - - - - - <0.00007Titanium (Ti) mg/L 0.100 0.00142 0.00699 0.00331 - - - - - 0.00274 - - - - - 0.00286Uranium (U) mg/L 0.015 0.000337 0.000375 0.000635 - - - - - 0.000609 - - - - - 0.000593Vanadium (V) mg/L - 0.000344 0.000545 0.0001 - - - - - 0.0001 - - - - - 0.0001Zinc (Zn) mg/L 0.030 0.00349 <0.003 <0.003 - - - - - <0.003 - - - - - <0.003Calculated guideline values

Cadmium (mg/L) 0.000033 0.000028 0.000040 0.000024 0.000029 0.000039 0.000025 0.000028 0.000044 0.000028 0.000035 0.000044 0.000031 0.000032 0.000050Copper (mg/L) 0.002384961 0.0019751 0.002881079 0.001700856 0.002099 0.002763 0.001807 0.001996 0.003171731 0.001975 0.002506 0.003133 0.002243 0.002304 0.003533533

Lead (mg/L) 0.003222149 0.002433021 0.004269885 0.00194728 0.002665 0.004013 0.002131 0.002471 0.004927202 0.002433 0.003468 0.004838 0.002941 0.003061 0.005787476nickel (mg/L) 0.096302241 0.081433062 0.113928864 0.071294976 0.085978 0.109782 0.075245 0.082196 0.124096255 0.081433 0.10062 0.122756 0.091186 0.09339 0.136610266


Page 2 of 12

Table A2.3 Cont'd.

EM-4 EM-4 EM-4 EM-4 EM-4 EM-WQ-1 EM-WQ-1 EM-WQ-1 EM-WQ-1 EM-WQ-2 EM-WQ-2 EM-WQ-2 EM-WQ-2 EM-WQ-3 EM-WQ-3 EM-WQ-3 EM-WQ-3 EM-WQ-41997 1997 1997 1998 1998 2005 2005 2005 2009 2005 2005 2005 2009 2005 2005 2005 2009 2005

Spring Summer Fall Spring Summer Spring Summer Fall Winter Spring Summer Fall Winter spring summer Fall Winter WinterConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 114 135 153 117 118 104 118 88 179 120 128 98 178 124 145 95 200 210Color, True T.C.U. - 48 40 21 20 55 - - - 8 - - - 7 - - - 4 -Conductivity (EC) uS/cm - 222 246 275 230 234 196 202 177 354 212 216 196 353 239 244 195 391 -Dissolved Organic Carbon mg/L - - - - - - - - - 3 - - - 2 - - - 3 -Dissolved Oxygen mg/L 5 13.6 10.2 12.5 - - - - 12.68 13.96 - - - 13.46 - - - 12 -Hardness (as CaCO3) mg/L - 103 125 148 106 118 87 94 77 151 94 99 85 147 110 120 90 <1.0 189pH pH 6.5-9 8.23 8.32 8.25 8.36 8.31 - - - 8.2 - - - 8.2 - - - 8.1 -Temperature oC - - - - - - - - 0 - - - 0.04 - - - 0.06 -Total Dissolved Solids mg/L - 121 142 165 125 130 110 122 95 210 125 132 106 223 133 148 120 237 224Total Organic Carbon mg/L - 8.9 10.8 7.4 7.8 11.3 - - - 2 - - - 2 - - - 2 1Total Suspended Solids mg/L 6 3 <1.0 <1.0 <1.0 7 7 21 <3.0 6 6 14 <3.0 6 8 58 <3.0 -Turbidity NTU - - - - - - - - 0.04 - - - - - - - 2 -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - - - - - - - - - - - - - - -Oil and Grease mg/L - - - - - - - - - - - - - - - - - - -Phenols (4AAP) mg/L 0.004 0.002 <0.001 <0.001 <0.001 <0.001 - - - <0.001 - - - <0.001 - - - <0.001 -Naphthenic Acids mg/L - - - - - - - - - <1.0 - - - <1.0 - - - <1.0 -Major IonsBicarbonate (HCO3) mg/L - 139 165 186 143 144 127 144 107 219 146 157 119 218 150 176 116 244 256Calcium (Ca) mg/L - 30.7 37.3 43.8 31.7 35.5 35.3 28.4 23.9 45.6 26.2 30 26.2 44.3 28.5 34.8 27.1 50 56.2Carbonate (CO3) mg/L - - - - - - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Chloride (Cl) mg/L 230 1.5 1.5 1.5 1.6 3.8 - - - 2 - - - 2 - - - 4 -Hydroxide (OH) mg/L - - - - - - - - - <5.0 - - - <5.0 - - - <5.0 -Magnesium (Mg) mg/L - 6.4 7.8 9.3 6.4 7 8.6 5.7 4.3 9 5.3 6 4.7 8.8 5.6 7.1 5.4 9.1 11.9Potassium (K) mg/L - <1.0 <1.0 2.59 - <1.0 0.6 0.5 0.7 1 0.6 0.6 0.7 1 0.7 0.5 0.5 1.1 1Sodium (Na) mg/L - 8.6 8.2 11.3 10.3 7 9.3 9.1 8.5 20 10.8 10.6 9.8 20 11 10.5 7.6 21 17Sulfate (SO4) mg/L 50 4.6 5.3 5 3.8 4.6 4.2 4 4 10.4 4.7 4.3 4.4 10.1 5.1 4.4 4 9 6.9Sulphide mg/L 0.002 - - - - - - - - <0.002 - - - <0.002 - - - <0.002 -Nutrients and BODBiochemical Oxygen Demand mg/L - - - - - - - - - <2.0 - - - <2.0 - - - <2.0 -Ammonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 - - - <0.05 - - - <0.05 - - - <0.05 -Nitrate (as N) mg/L 13 - - - - - - - - - - - - - - - - - 0.4Nitrate+Nitrite-N mg/L - <0.05 <0.05 <0.05 <0.05 <0.05 <0.1 <0.1 <0.1 1 <0.1 <0.1 <0.1 0.9 <0.1 <0.1 0.18 0.7 0.4Nitrite (as N) mg/L 0.06 - - - - - <0.05 - <0.05 - <0.05 <0.05 <0.05 - <0.05 <0.05 <0.05 - <0.05Phosphorus, Total mg/L 0.05 <0.05 <0.05 <0.05 <0.05 0.06 <0.001 <0.001 0.1 0.002 0.1 0.05 0.1 0.002 0.1 <0.001 0.1 0.003 <0.001Phosphorus, Total Dissolved mg/L 0.05 - - - - - - - - <0.001 - - - <0.001 - - - <0.001 -Total Kjeldahl Nitrogen mg/L 1 0.18 0.1 0.11 0.19 0.32 <0.2 <0.2 0.27 0.2 0.2 <0.2 0.32 0.3 <0.2 <0.2 0.24 <0.2 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.195 0.147 0.094 0.098 0.29 0.324 0.568 0.731 0.0326 0.296 0.476 0.556 0.0307 0.246 0.37 1.17 0.0472 0.17Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0000868 <0.0002 <0.0002 <0.0002 0.0000845 <0.0002 <0.0002 <0.0002 0.0000723 -Arsenic (As) mg/L 0.005 - - - - - <0.001 <0.001 <0.001 0.000327 <0.001 <0.001 <0.001 0.000293 <0.001 <0.001 <0.001 0.000316 -Barium (Ba) mg/L 5 0.0552 0.0611 0.0593 0.0542 0.0586 0.078 0.08 0.077 0.12 0.074 0.08 0.074 0.12 0.074 0.081 0.086 0.118 0.101Beryllium (Be) mg/L 0.0005 0.0005 0.0005 0.0005 0.0005 <0.001 <0.001 <0.001 <0.00001 <0.001 <0.001 <0.001 0.00005 <0.001 <0.001 <0.001 0.00005 <0.001Bismuth (Bi) mg/L <0.007 <0.007 <0.007 <0.007 <0.007 <0.0001 <0.0001 <0.0001 <0.00001 <0.0001 <0.0001 <0.0001 <0.00001 <0.0001 <0.0001 <0.0001 <0.00001 -Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 <0.02 - <0.02 <0.02 <0.02 0.0138 <0.02 <0.02 <0.02 0.0137 <0.02 <0.02 <0.02 0.0113 <0.02Cadmium (Cd) mg/L calculated - - - - - - - - <0.000006 - - - <0.000006 - - - 0.0000063 -Chlorine (Cl) mg/L - - - - - - - - - 2.08 - - - 2.07 - - - 3.57 -Chromium (Cr) mg/L 0.001 <0.0008 <0.0008 <0.0008 <0.0008 0.0016 <0.0008 0.0008 0.0011 <0.0003 <0.0008 <0.0008 0.0008 <0.0003 <0.0008 <0.0008 0.0015 <0.0003 <0.0008Cobalt (Co) mg/L 0.11 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0002 <0.0002 0.0003 0.0000286 <0.0002 <0.0002 0.0002 0.0000272 <0.0002 <0.0002 0.0007 0.0000364 <0.0002Copper (Cu) mg/L calculated <0.001 <0.001 <0.001 <0.001 <0.001 - - - 0.000775 - - - 0.000403 - - - 0.000399 -Iron (Fe) mg/L 0.3 0.19 0.247 0.203 0.167 0.18 0.3 0.6 0.8 0.0677 0.4 0.5 0.7 0.0648 0.3 0.4 1.3 0.108 0.246


Page 3 of 12

Table A2.3 Cont'd.

EM-4 EM-4 EM-4 EM-4 EM-4 EM-WQ-1 EM-WQ-1 EM-WQ-1 EM-WQ-1 EM-WQ-2 EM-WQ-2 EM-WQ-2 EM-WQ-2 EM-WQ-3 EM-WQ-3 EM-WQ-3 EM-WQ-3 EM-WQ-41997 1997 1997 1998 1998 2005 2005 2005 2009 2005 2005 2005 2009 2005 2005 2005 2009 2005

Spring Summer Fall Spring Summer Spring Summer Fall Winter Spring Summer Fall Winter spring summer Fall Winter WinterLead (Pb) mg/L calculated <0.002 <0.002 <0.002 <0.002 <0.002 0.0002 0.0002 0.0004 0.0000326 0.0002 0.0006 0.0003 0.000022 0.0002 0.0001 0.0008 0.0000319 <0.0001Lithium (Li) mg/L 0.87 0.00334 0.00396 0.00388 0.00452 0.005 0.003 0.004 0.003 0.00337 <0.0002 0.004 <0.0002 0.00325 0.004 0.004 <0.0002 0.00369 -Manganese (Mn) mg/L - 0.0113 0.0144 0.0097 0.0063 0.0324 0.025 0.031 0.032 0.0156 0.026 0.03 0.032 0.0149 0.027 0.032 0.068 0.0268 0.013Mercury (Hg)-Trace ng/L 5 - - - - - - - - <1.2 - - - <1.2 - - - <1.2 -Molybdenum (Mo) mg/L 0.073 <0.001 <0.001 <0.001 0.001 <0.001 0.0005 0.0005 0.001 0.00124 0.0005 0.0005 0.002 0.00122 0.0005 0.0005 0.0005 0.000976 0.0005Nickel (Ni) mg/L calculated 0.001 <0.001 <0.001 <0.001 0.002 0.001 0.0006 0.0015 <0.00006 0.001 0.0007 0.0013 <0.00006 0.001 <0.0002 0.0017 <0.00006 <0.0002Selenium (Se) mg/L 0.001 - - - - - <0.0008 <0.0008 <0.0008 0.00032 <0.0008 <0.0008 <0.0008 0.00037 <0.0008 <0.0008 <0.0008 0.00033 -Silver (Ag) mg/L 0.0001 - - - - - <0.0001 <0.0001 0.0001 <0.000005 <0.0001 <0.0001 <0.0001 <0.000005 <0.0001 <0.0001 <0.0001 <0.000005 <0.0001Strontium (Sr) mg/L - 0.194 0.245 0.247 0.193 0.214 0.22 0.228 0.193 0.417 0.225 0.237 0.206 0.413 0.251 0.268 0.193 0.427 0.409Sulphur mg/L - 1.52 1.2 - - 1 1.2 1.2 1.4 2.99 1.4 1.4 1.4 2.92 1.8 1.7 1.3 3.31 -Thallium (Tl) mg/L 0.0008 - - - - - <0.0001 <0.0001 <0.0001 0.0000038 <0.0001 <0.0001 <0.0001 0.0000062 <0.0001 <0.0001 <0.0001 <0.000003 <0.0001Thorium mg/L - - - - - - - - - <0.00003 - - - <0.00003 - - - <0.00003 -Tin (Sn) mg/L - 0.003 <0.003 0.003 <0.003 <0.003 <0.0004 <0.0004 <0.0004 <0.00007 <0.0004 <0.0004 <0.0004 <0.00007 <0.0004 <0.0004 <0.0004 <0.00007 <0.0004Titanium (Ti) mg/L 0.100 <0.005 <0.005 <0.005 <0.005 <0.005 0.0053 0.0101 0.0166 0.00208 <0.005 0.007 0.0128 0.00151 <0.005 0.0071 0.0199 0.00181 0.005Uranium (U) mg/L 0.015 - - - - - <0.0001 <0.0001 <0.0001 0.000691 <0.0001 <0.0001 <0.0001 0.000688 <0.0001 <0.0001 <0.0001 0.000651 -Vanadium (V) mg/L - <0.001 <0.001 <0.001 <0.001 <0.001 0.001 0.0016 0.0017 0.000221 0.0009 0.0014 0.0014 0.000228 0.0008 0.0011 0.0005 0.000246 0.0005Zinc (Zn) mg/L 0.030 <0.003 0.0079 <0.003 <0.003 <0.003 <0.003 <0.003 0.004 <0.003 <0.003 0.004 0.004 <0.003 <0.003 <0.003 0.006 <0.003 0.007Dissolved MetalsAluminum (Al) mg/L 0.1 - - - - - - - - 0.00112 - - - 0.00106 - - - <0.001 -Antimony (Sb) mg/L - - - - - - - - - 0.0000859 - - - 0.0000837 - - - 0.0000716 -Arsenic (As) mg/L 0.005 - - - - - - - - 0.000285 - - - 0.00026 - - - 0.000235 -Barium (Ba) mg/L 5 - - - - - - - - 0.114 - - - 0.11 - - - 0.104 -Beryllium (Be) mg/L - - - - - - - - <0.00001 - - - <0.00001 - - - 0.00005 -Bismuth (Bi) mg/L - - - - - - - - <0.00001 - - - <0.00001 - - - 0.00005 -Boron (B) mg/L 1.2 - - - - - - - - 0.0133 - - - 0.0128 - - - 0.0105 -Cadmium (Cd) mg/L calculated - - - - - - - - <0.000006 - - - <0.000006 - - - <0.000006 -Chlorine (Cl) mg/L - - - - - - - - - 2.01 - - - 1.91 - - - 3.23 -Chromium (Cr) mg/L 0.001 - - - - - - - - <0.0003 - - - <0.0003 - - - <0.0003 -Cobalt (Co) mg/L 0.11 - - - - - - - - 0.0000143 - - - 0.0000175 - - - 0.0000191 -Copper (Cu) mg/L calculated - - - - - - - - 0.000451 - - - 0.000399 - - - 0.000395 -Iron (Fe) mg/L 0.3 - - - - - - - - <0.004 - - - <0.004 - - - <0.004 -Lead (Pb) mg/L calculated - - - - - - - - <0.000006 - - - <0.000006 - - - 0.0000104 -Lithium (Li) mg/L 0.87 - - - - - - - - 0.00324 - - - 0.00294 - - - 0.00346 -Manganese (Mn) mg/L - - - - - - - - - 0.00763 - - - 0.00726 - - - 0.0203 -Molybdenum (Mo) mg/L 0.073 - - - - - - - - 0.0012 - - - 0.00115 - - - 0.000915 -Nickel (Ni) mg/L calculated - - - - - - - - <0.00006 - - - <0.00006 - - - <0.00006 -Selenium (Se) mg/L 0.001 - - - - - - - - 0.000317 - - - 0.00031 - - - <0.0002 -Silver (Ag) mg/L 0.0001 - - - - - - - - <0.000005 - - - <0.000005 - - - <0.000005 -Strontium (Sr) mg/L - - - - - - - - - 0.401 - - - 0.382 - - - 0.388 -Sulphur mg/L - - - - - - - - - 2.99 - - - 2.69 - - - <0.6 -Thallium (Tl) mg/L 0.0008 - - - - - - - - 0.0000038 - - - 0.0000061 - - - <0.000003 -Thorium mg/L - - - - - - - - - <0.00003 - - - <0.00003 - - - <0.00003 -Tin (Sn) mg/L - - - - - - - - - <0.00007 - - - <0.00007 - - - <0.00007 -Titanium (Ti) mg/L 0.100 - - - - - - - - 0.000998 - - - 0.000977 - - - 0.000896 -Uranium (U) mg/L 0.015 - - - - - - - - 0.000668 - - - 0.000639 - - - 0.000593 -Vanadium (V) mg/L - - - - - - - - - 0.0001 - - - 0.0001 - - - 0.0001 -Zinc (Zn) mg/L 0.030 - - - - - - - - <0.003 - - - <0.003 - - - <0.003 -Calculated guideline values

Cadmium (mg/L) 0.000034 0.000040 0.000046 0.000035 0.000038 0.000029 0.000031 0.000026 0.0000472 0.000031 0.000033 0.000029 0.0000461 0.000036 0.000039 0.000030 0.0000003 0.000057Copper (mg/L) 0.002425 0.002862 0.003306 0.002485 0.002724 0.002099 0.002243 0.001891 0.0033630 0.002243 0.002345 0.002058 0.0032867 0.002565 0.002763 0.002161 0.0000256 0.004074

Lead (mg/L) 0.003304 0.004227 0.005241 0.003427 0.003928 0.002665 0.002941 0.002281 0.0053763 0.002941 0.003141 0.002587 0.0051956 0.003592 0.004013 0.002782 0.0000037 0.007155nickel (mg/L) 0.097748 0.113241 0.128751 0.099904 0.108388 0.085978 0.091186 0.078358 0.1307298 0.091186 0.094849 0.084472 0.1280894 0.102757 0.109782 0.088222 0.0017044 0.155047


Page 4 of 12

Table A2.3 Cont'd.

EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC ET4 ET4 ET4 ET4 ET4 ET4 ET4 ET4 ET42006 2006 2006 2006 2010 2010 2010 2011 1997 1997 1997 1998 1998 2006 2008 2008 2008

Spring Summer Fall Winter Spring Summer Fall Winter Spring Summer Fall Spring Summer Winter Spring Summer FallConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 140 181 106 200 104 162 152 227 83 131 161 119 100 203 97 193 190Color, True T.C.U. - 25 15 50 9 48 26 24 6 29.2 50 21 20 - 11 - 14 16Conductivity (EC) uS/cm - 147 320 202 380 207 314 299 413 161 235 288 230 194 386 182 357 341Dissolved Organic Carbon mg/L - 8 6 12 4 11.9 8.3 7.2 3.9 - - - - - 3 12 5 6Dissolved Oxygen mg/L 5 6.32 9.33 11.07 12.89 9.2 6.78 7.4 9.02 - - - - - 13 8.8 - -Hardness (as CaCO3) mg/L - 133 164 106 188 99.6 144 145 186 79.4 123 151 109 99.1 <1.0 - <1.0 <1.0pH pH 6.5-9 8.4 8.5 8.8 7.9 8.3 8.35 8.38 8.13 8.06 8.25 8.26 8.25 8.21 8.2 8.2 8.5 8.3Temperature oC 22.95 18.97 8.78 0.04 - 17.06 16 1.3 - - - - - 0.06 10.5 - -Total Dissolved Solids mg/L - 172 192 129 189 139 190 185 247 88 136 168 20.4 109 218 136 208 212Total Organic Carbon mg/L - 8 7 12 5 12 17.3 7 3.8 12.1 11.9 7.4 8.9 13.8 3 12 5 5Total Suspended Solids mg/L <3.0 <3.0 7 <3.0 8 5 <3.0 <3.0 92 4 3 9 27 4 13 <3.0 <3.0Turbidity NTU - - - 10.4 - 2.9 - - - - - - - - 8.6 - -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - <1.0 <1.0 <1.0 <1.0 - - - - - - 0.5 0.5 0.5Oil and Grease mg/L - - - - - - - - - - - - - - - - - -Phenols (4AAP) mg/L 0.004 - - <0.001 <0.001 0.0035 0.0018 <0.001 <0.001 - - - - - <0.001 0.002 0.012 0.003Naphthenic Acids mg/L - - - - - <1.0 <1.0 <1.0 <1.0 - - - - - - - - -Major IonsBicarbonate (HCO3) mg/L - 167 210 126 244 126 186 179 277 102 160 196 145 122 248 118 222 228Calcium (Ca) mg/L - 39.7 48.3 31.4 55.8 30.2 42.4 42.7 54.7 23.7 36.9 44.9 32.9 30.4 57.9 28.7 56.2 49.5Carbonate (CO3) mg/L - <5.0 6 <5.0 <5.0 <5.0 5.5 <5.0 <5.0 - - - - - <5.0 <5.0 7 <5.0Chloride (Cl) mg/L 230 2 2 2 2 0.75 1.1 1.14 1.22 <0.5 0.8 <0.5 <0.5 2.9 2 1 <0.5 <0.5Hydroxide (OH) mg/L - - - - - <5.0 <5.0 <5.0 <5.0 - - - - - 12.2 6.2 12.3 10.8Magnesium (Mg) mg/L - 8.2 10.5 6.7 11.8 5.88 9.27 9.32 12 4.9 7.6 9.5 6.7 5.7 <0.1 <0.1 <0.1 <0.1Potassium (K) mg/L - <0.5 0.8 0.8 1.1 0.6 0.75 0.57 0.95 <1.0 <1.0 2.12 - <1.0 1.3 0.8 0.9 0.7Sodium (Na) mg/L - 10 12 8 15 6.6 10.5 10.2 15.8 4.6 6.7 9.8 8.4 4.8 14 6 13 11Sulfate (SO4) mg/L 50 5.2 5.2 4.3 5.7 3.58 4.17 3.87 7.22 3.6 4.3 4.3 3.7 3.8 5.6 5 4.6 4Sulphide mg/L 0.002 <0.002 - <0.002 <0.002 - <0.002 <0.002 <0.002 - - - - - <0.002 <0.002 <0.002 <0.002Nutrients and BODBiochemical Oxygen Demand mg/L - - - - - <2.0 2 <2.0 <2.0 - - - - - - <2.0 <2.0 <2.0Ammonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Nitrate (as N) mg/L 13 - - - - <0.05 <0.05 <0.05 0.081 - - - - - <0.1 <0.1 <0.1 <0.1Nitrate+Nitrite-N mg/L - <0.1 <0.1 <0.1 <0.1 <0.071 <0.071 <0.071 0.081 <0.05 <0.05 <0.05 <0.05 <0.05 - - - -Nitrite (as N) mg/L 0.06 - - - - <0.05 <0.05 <0.05 <0.05 - - - - - - <0.05 - -Phosphorus, Total mg/L 0.05 0.007 0.005 0.01 <0.001 0.0111 0.0035 0.0026 0.0029 0.091 - - - - <0.001 0.018 0.005 0.004Phosphorus, Total Dissolved mg/L 0.05 - - - - 0.0024 0.0018 0.0013 <0.001 - - - - - 0.001 0.005 0.002 0.002Total Kjeldahl Nitrogen mg/L 1 <0.2 <0.2 0.4 <0.2 0.67 0.89 0.26 0.32 0.4 <0.05 0.1 0.2 0.39 <0.2 0.4 <0.2 0.3Total MetalsAluminum (Al) mg/L 0.1 0.135 0.0373 0.459 0.0349 0.497 0.0503 0.0522 0.0435 3.45 0.207 0.085 0.474 2.07 0.054 0.672 0.0274 0.0394Antimony (Sb) mg/L - 0.0000892 0.0000769 0.0000619 0.0000527 0.0000747 0.0000809 0.00005 0.0000538 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0000475 0.0000815 0.000087 0.0000582Arsenic (As) mg/L 0.005 0.000625 0.000663 0.000566 0.000369 0.000596 0.000801 0.000466 0.000339 - - - - - 0.000442 0.000688 0.000731 0.000477Barium (Ba) mg/L 5 0.0702 0.0882 0.0602 0.0967 0.0595 0.0858 0.0723 0.111 0.0909 0.0708 0.0759 0.0691 0.0753 0.104 0.0635 0.104 0.0993Beryllium (Be) mg/L 0.0000134 <0.00001 0.0000178 <0.00001 0.0000132 <0.00001 <0.00001 <0.00001 0.0005 0.0005 0.0005 0.0005 0.0005 0.00005 0.0000259 <0.00001 0.00005Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.007 <0.007 <0.007 <0.007 <0.007 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.00807 0.00969 0.00644 0.00828 0.00724 0.00857 0.00727 0.0101 <0.02 <0.02 <0.02 <0.02 <0.02 0.00878 0.00599 0.00886 0.00819Cadmium (Cd) mg/L calculated 0.0000374 0.0000083 0.0000081 0.0000067 0.0000083 0.0000062 <0.000006 <0.000006 - - - - - 0.000009 0.0000122 0.0000061 <0.000006Chlorine (Cl) mg/L - 0.904 1.12 1.23 1.45 0.508 0.961 1.33 <0.3 - - - - - <0.3 <0.3 <0.3 0.421Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 0.00067 <0.0003 0.000449 <0.0003 <0.0003 <0.0003 0.0045 <0.0008 <0.0008 <0.0008 0.0031 <0.0003 0.001 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000551 0.0000499 0.000132 <0.00001 0.000117 0.0000322 0.0000297 0.0000132 0.0014 <0.0007 <0.0007 <0.0007 <0.0007 0.0000309 0.000265 0.0000193 0.0000198Copper (Cu) mg/L calculated 0.00157 0.000332 0.000988 0.000459 0.00112 0.000936 0.00055 0.000351 0.002 <0.001 <0.001 0.001 0.001 0.000556 0.00142 0.000737 0.000607Iron (Fe) mg/L 0.3 0.126 0.0618 0.392 0.0992 0.313 0.0809 0.11 0.0757 0.68 0.14 0.16 0.446 0.45 0.172 0.733 0.0386 0.0868


Page 5 of 12

Table A2.3 Cont'd.

EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC EM-RC ET4 ET4 ET4 ET4 ET4 ET4 ET4 ET4 ET42006 2006 2006 2006 2010 2010 2010 2011 1997 1997 1997 1998 1998 2006 2008 2008 2008

Spring Summer Fall Winter Spring Summer Fall Winter Spring Summer Fall Spring Summer Winter Spring Summer FallLead (Pb) mg/L calculated 0.0000939 0.0000354 0.000191 0.0000377 0.000133 0.000116 0.0000308 0.0000235 <0.002 <0.002 0.002 <0.002 <0.002 0.0000462 0.000346 0.0000302 0.0000278Lithium (Li) mg/L 0.87 0.00325 0.00451 0.00203 0.00409 0.00217 0.0036 0.00331 0.00552 0.00574 0.00369 0.00429 0.00434 0.003 0.00459 0.00192 0.00411 0.00362Manganese (Mn) mg/L - 0.012 0.0109 0.0184 0.00663 0.0109 0.0147 0.00869 0.00614 0.017 0.015 0.016 0.0166 0.018 0.02 0.0219 0.0113 0.00857Mercury (Hg)-Trace ng/L 5 <1.2 <1.2 1.7 <1.2 1.8 <1.2 <1.2 <1.2 - - - - - <1.2 4.9 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.000754 0.000907 0.000577 0.000833 0.000464 0.000765 0.000573 0.000818 <0.001 <0.001 <0.001 <0.001 <0.001 0.00073 0.000419 0.000953 0.000726Nickel (Ni) mg/L calculated 0.000359 0.00131 0.00075 <0.00006 0.000824 0.000241 0.000005 <0.00006 0.003 <0.001 <0.001 <0.001 0.002 <0.00006 <0.00006 0.000066 <0.00006Selenium (Se) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0002 <0.0002 <0.0002 <0.0002 - - - - - <0.0003 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 0.0000094 <0.000005 0.0000049 <0.000005 - - - - - <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - 0.225 0.299 0.165 0.36 0.175 0.278 0.259 0.384 0.127 0.206 0.231 0.169 0.151 0.343 0.141 0.296 0.269Sulphur mg/L - 1.6 299 2.42 2.59 1.28 1.38 1.44 <0.6 1.3 0.942 - - - 1.5 1.48 1.65 1.83Thallium (Tl) mg/L 0.0008 0.0000084 0.0000094 0.0000042 0.0000042 0.0000084 0.0000082 <0.000003 <0.000003 - - - - - 0.0000056 0.0000137 0.0000059 0.0000041Thorium mg/L - 0.0000052 <0.00003 0.0000304 <0.00003 0.0000526 <0.00003 <0.00003 <0.00003 - - - - - <0.00003 0.00013 <0.00003 <0.00003Tin (Sn) mg/L - <0.00003 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.003 <0.003 0.004 0.003 <0.003 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.00301 0.00139 0.0116 0.00311 0.00842 0.00181 0.0017 0.00135 0.086 0.0066 <0.005 0.013 0.0411 0.00314 0.0155 0.00135 0.00167Uranium (U) mg/L 0.015 0.000349 0.000501 0.000202 0.000598 0.000245 0.000394 0.000353 0.000752 - - - - - 0.000681 0.000295 0.000686 0.000569Vanadium (V) mg/L - 0.000661 0.000426 0.00118 0.000237 0.00095 0.000417 0.000257 0.0001 0.007 <0.001 <0.001 <0.001 0.004 0.000246 0.00178 0.000399 0.000266Zinc (Zn) mg/L 0.030 0.0126 0.00434 <0.003 0.0037 <0.003 <0.003 0.000699 <0.003 0.0091 <0.003 <0.003 <0.003 0.0034 <0.003 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.00701 0.00751 0.0372 0.00101 0.0373 0.0022 0.0041 0.00103 - - - - - 0.00105 0.0434 0.00271 0.00129Antimony (Sb) mg/L - 0.0892 0.0000761 0.0000611 0.0000522 0.000074 0.0000801 0.0000495 0.0000533 - - - - - 0.000047 0.0000807 0.0000861 0.0000576Arsenic (As) mg/L 0.005 0.000519 0.000608 0.000486 0.000311 0.000499 0.000735 0.000436 0.00031 - - - - - 0.000336 0.000468 0.000685 0.000391Barium (Ba) mg/L 5 0.0632 0.0807 0.0553 0.0934 0.054 0.0828 0.0687 0.11 - - - - - 0.103 0.0521 0.102 0.0939Beryllium (Be) mg/L 0.0000033 <0.00001 <0.00001 <0.00001 0.0000131 <0.00001 <0.00001 <0.00001 - - - - - <0.00001 <0.00001 <0.00001 0.00005Bismuth (Bi) mg/L 0.0000016 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 - - - - - <0.00001 <0.00001 <0.00001 0.00005Boron (B) mg/L 1.2 0.000786 0.0091 0.00521 0.00735 0.0057 0.00772 0.00625 0.01 - - - - - 0.00772 0.00568 0.00877 0.00775Cadmium (Cd) mg/L calculated 0.000005 0.0000083 <0.000006 <0.000006 0.0000082 <0.000006 <0.000006 <0.000006 - - - - - 0.0000063 <0.000006 0.000006 <0.000006Chlorine (Cl) mg/L - 0.796 1.12 1.23 1.44 0.503 0.913 1.32 <0.3 - - - - - <0.3 <0.3 <0.3 0.417Chromium (Cr) mg/L 0.001 0.000114 <0.0003 0.000317 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 - - - - - <0.0003 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000246 <0.00001 0.0000306 <0.00001 0.000057 0.0000103 0.0000195 <0.00001 - - - - - <0.00001 0.0000483 0.0000191 0.0000107Copper (Cu) mg/L calculated 0.000939 <0.0001 0.000802 0.000399 0.00111 0.000679 0.000544 0.000347 - - - - - 0.000494 0.00141 0.00073 0.000577Iron (Fe) mg/L 0.3 0.00508 <0.004 0.0716 <0.004 0.145 0.00895 0.0374 <0.004 - - - - - 0.0058 0.0818 <0.004 0.0199Lead (Pb) mg/L calculated 0.0000146 <0.000006 0.0000384 0.0000079 0.0000703 <0.000006 0.0000105 <0.000006 - - - - - <0.000006 0.0000361 0.0000299 <0.000006Lithium (Li) mg/L 0.87 0.00295 0.00431 0.00191 0.00405 0.00207 0.00356 0.0031 0.00546 - - - - - 0.00443 0.00149 0.00407 0.00358Manganese (Mn) mg/L - 0.00214 0.00106 0.00112 0.00311 0.00644 0.000402 0.00676 0.00426 - - - - - 0.0117 0.0054 0.00289 0.00514Molybdenum (Mo) mg/L 0.073 0.000684 0.000878 0.000573 0.000826 0.000464 0.000738 0.000566 0.00081 - - - - - 0.000723 0.000415 0.000952 0.000726Nickel (Ni) mg/L calculated 0.000175 0.00129 0.000387 <0.00006 0.000675 0.000201 <0.00006 <0.00006 - - - - - <0.00006 <0.00006 0.000066 <0.00006Selenium (Se) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 - - - - - <0.0003 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 - - - - - <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - 0.214 0.283 0.165 0.346 0.174 0.272 0.249 0.382 - - - - - 0.34 0.138 0.296 0.262Sulphur mg/L - 1.38 2.09 2.39 2.16 1.27 1.35 1.35 <0.6 - - - - - 1.43 1.47 1.63 1.8Thallium (Tl) mg/L 0.0008 0.0000051 0.0000094 <0.000003 0.0000042 <0.000003 0.0000064 <0.000003 <0.000003 - - - - - 0.0000055 0.0000035 0.0000059 0.0000031Thorium mg/L - 0.0000052 <0.00003 0.0000303 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 - - - - - <0.00003 0.0000376 <0.00003 <0.00003Tin (Sn) mg/L - <0.00003 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 - - - - - <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.000844 0.000785 0.00296 0.00212 0.00227 0.000674 0.000879 0.000803 - - - - - 0.00227 0.00267 0.000968 0.000973Uranium (U) mg/L 0.015 0.000321 0.000501 0.000186 0.000571 0.000238 0.000371 0.000336 0.000728 - - - - - 0.000674 0.000272 0.000664 0.000545Vanadium (V) mg/L - 0.000383 0.000323 0.000336 0.0001 0.000378 0.00031 <0.0002 <0.0002 - - - - - 0.0001 0.000392 0.000336 0.0001Zinc (Zn) mg/L 0.030 0.00292 0.00322 <0.003 0.00344 <0.003 <0.003 <0.003 <0.003 - - - - - <0.003 <0.003 <0.003 <0.003Calculated guideline values

Cadmium (mg/L) 0.0000423 0.0000507 0.0000348 0.0000570 0.0000330 0.0000453 0.0000456 0.0000565 0.000027 0.000040 0.000047 0.000036 0.000033 0.0000003 0.0000357 0.0000005 0.0000003Copper (mg/L) 0.0030173 0.0036089 0.0024855 0.0040556 0.0023567 0.0032293 0.0032485 0.0040187 0.001942 0.002822 0.003363 0.002545 0.002347 0.0000256 0.0025455 0.0000382 0.0000256

Lead (mg/L) 0.0045741 0.0059723 0.0034266 0.0071064 0.0031654 0.0050610 0.0051058 0.0070103 0.002372 0.004141 0.005376 0.00355 0.003145 0.0000037 0.0035505 0.0000068 0.0000037nickel (mg/L) 0.1187078 0.1391982 0.0999044 0.1544230 0.0952860 0.1260978 0.1267628 0.1531729 0.080208 0.111861 0.13073 0.102046 0.094922 0.0017044 0.1020461 0.0024361 0.0017044


Page 6 of 12

Table A2.3 Cont'd.

PR1 PR1 PR1 PR1 PR1 PR1 PR2 PR2 PR2 PR2 PR3 PR3 PR3 PR3 PR3 PR3 PR4 PR4 PR4 PR4 PR4 PR41997 1997 1997 1998 1998 1998 1997 1997 1997 1998 1997 1997 1997 1998 1998 1998 1997 1997 1997 1998 1998 1998

Spring Summer Fall Spring Summer Fall Spring Summer Fall Spring Spring Summer Fall Spring Summer Fall Spring Summer Fall Spring Summer FallConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 44 54 82 43 51 97 54 64 101 49 58 70 106 51 61 133 61 71 110 48 67 138Color, True T.C.U. - 18.4 60 27 40 50 18 20.5 60 27 40 20.2 60 25 40 48 15 21.1 60 23 40 65 15Conductivity (EC) uS/cm - 111 126 173 100 112 200 122 140 208 107 131 151 217 112 134 305 134 151 221 109 138 287Dissolved Organic Carbon mg/L - - - - - - - - - - - - - - - - - - - - - - -Dissolved Oxygen mg/L 5 13.8 9.5 11.9 - - - 13.1 10 12.1 - 14.8 9.8 12 - - - 15.1 9.8 11.9 - - -Hardness (as CaCO3) mg/L - 45.4 59.4 83.9 44.3 48.7 100 51.6 61.7 97.1 43.6 49.9 61.9 89.8 42.4 55.6 115 52.1 62.8 95.1 45.2 57.5 119pH pH 6.5-9 7.75 7.78 7.94 7.67 7.9 7.95 7.88 7.93 8.01 7.61 7.91 7.96 8 7.72 7.96 8.17 7.96 8 8.07 7.75 8.02 8.22Temperature oC - - - - - - - - - - - - - - - - - - - - - -Total Dissolved Solids mg/L - 57 70 101 55 62 114 64 77 124 58 70 85 129 61 75 179 72 85 130 59 79 172Total Organic Carbon mg/L - 8.5 7.7 5.3 10.6 9.6 4.6 8.9 9.9 5.9 11.4 8.1 9.2 4.8 12.2 9.1 4.3 8.4 9.5 5.1 11.2 9 4.1Total Suspended Solids mg/L 9 11 3 16 9 <1.0 7 7 <1.0 24 8 9 <1.0 21 18 <1.0 9 13 <1.0 25 23 2Turbidity NTU - - - - - - - - - - - - - - - - - - - - - -General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - - - - - - - - - - - - - - - - - - -Oil and Grease mg/L - - - - - - - - - - - - - - - - - - - - - - -Phenols (4AAP) mg/L 0.004 0.002 <0.001 <0.001 <0.001 <0.001 <0.001 0.003 <0.001 <0.001 <0.001 0.002 <0.001 0.001 <0.001 <0.001 <0.001 0.004 <0.001 0.001 <0.001 <0.001 <0.001Naphthenic Acids mg/L - - - - - - - - - - - - - - - - - - - - - - -Major IonsBicarbonate (HCO3) mg/L - 54 66 100 52 62 118 66 78 123 59 71 86 129 62 74 163 74 86 134 58 82 169Calcium (Ca) mg/L - 12 16.2 22.7 11.9 13 27.9 14 16.8 26.7 12 13.9 17.2 25.4 11.8 15.8 33.2 14.7 17.7 27.1 12.7 16.4 34.7Carbonate (CO3) mg/L - - - - - - - - - - - - - - - - - - - - - - -Chloride (Cl) mg/L 230 <0.5 <0.5 <0.5 <0.5 3 <0.5 <0.5 <0.5 <0.5 1.1 <0.5 <0.5 <0.5 0.8 3.1 1.1 <0.5 <0.5 <0.5 <0.5 3.1 1.5Hydroxide (OH) mg/L - - - - - - - - - - - - - - - - - - - - - - -Magnesium (Mg) mg/L - 3.7 4.6 6.6 3.6 3.9 7.4 4 4.8 7.4 3.3 3.7 4.6 6.4 3.2 3.9 7.8 3.8 4.5 6.7 3.3 4 7.9Potassium (K) mg/L - <1.0 <1.0 2.32 1.06 <1.0 <1.0 <1.0 <1.0 2.58 <1.0 <1.0 <1.0 2.15 1.39 <1.0 <1.0 <1.0 <1.0 2.69 1.13 <1.0 <1.0Sodium (Na) mg/L - 4.4 5.3 6.4 3.9 3.3 5.7 4.9 6.3 10.9 4.4 7.6 9.3 15.3 6.6 6.9 26 7.6 9.3 13.7 5.6 6.8 21.3Sulfate (SO4) mg/L 50 10 10.6 13.8 8.1 7.6 13.2 8.1 9.3 15.1 6.7 8.7 10.7 15.6 6.7 7.5 29.6 8.2 10 13.2 6.8 6.9 23.3Sulphide mg/L 0.002 - - - - - - - - - - - - - - - - - - - - - -Nutrients and BODBiochemical Oxygen Demand mg/L - - - - - - - - - - - - - - - - - - - - - - -Ammonia-N mg/L 1.04 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.08Nitrate (as N) mg/L 13 - - - - - - - - - - - - - - - - - - - - - -Nitrate+Nitrite-N mg/L - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.08 <0.05 <0.05 <0.05 0.14 <0.05 0.07 0.28 <0.05 <0.05 <0.05 <0.05 0.07 0.19Nitrite (as N) mg/L 0.06 - - - - - - - - - - - - - - - - - - - - - -Phosphorus, Total mg/L 0.05 <0.05 <0.05 <0.05 <0.05 0.06 0.09 0.144 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.09 <0.05 <0.05 <0.05 <0.05 0.07 0.07Phosphorus, Total Dissolved mg/L 0.05 - - - - - - - - - - - - - - - - - - - - - -Total Kjeldahl Nitrogen mg/L 1 0.27 0.09 <0.05 0.33 0.15 0.16 0.18 0.17 0.1 0.25 0.17 0.09 0.18 0.25 0.17 0.49 0.17 0.15 <0.05 0.33 0.22 0.55Total MetalsAluminum (Al) mg/L 0.1 0.499 0.457 0.092 1.42 0.36 0.052 0.376 0.25 0.122 0.979 0.325 0.548 0.085 1.49 0.256 0.063 0.338 0.365 0.075 1.54 0.522 0.054Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Arsenic (As) mg/L 0.005 - - - - - - - - - - - - - - - - - - - - - -Barium (Ba) mg/L 5 0.0678 0.0806 0.0865 0.0776 0.0739 0.112 0.0665 0.074 0.0857 0.0696 0.0627 0.0753 0.0833 0.0767 0.0719 0.124 0.0606 0.0715 0.0846 0.0804 0.0742 0.119Beryllium (Be) mg/L 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005Bismuth (Bi) mg/L <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007Boron (B) mg/L 1.2 <0.02 <0.02 0.037 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02Cadmium (Cd) mg/L calculated - - - - - - - - - - - - - - - - - - - - - -Chlorine (Cl) mg/L - - - - - - - - - - - - - - - - - - - - - - -Chromium (Cr) mg/L 0.001 0.0009 0.001 0.0011 <0.0008 0.0019 <0.0008 0.0038 <0.0008 0.001 <0.0008 0.0016 0.0011 <0.0008 <0.0008 0.0017 <0.0008 0.0016 <0.0008 0.0161 <0.0008 0.0012 <0.0008Cobalt (Co) mg/L 0.11 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 0.0009 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 0.0008 <0.0007 <0.0007 <0.0007 <0.0007 0.0008Copper (Cu) mg/L calculated <0.001 0.002 <0.001 0.002 0.001 0.002 0.005 <0.001 0.002 0.002 0.001 0.001 <0.001 <0.001 <0.001 0.002 <0.001 <0.001 <0.001 0.001 <0.001 0.002Iron (Fe) mg/L 0.3 0.52 0.52 0.25 1.08 0.39 0.12 0.46 0.44 0.26 0.966 0.42 0.41 0.36 1.27 0.55 0.1 0.4 0.4 0.25 1.34 0.55 0.1


Page 7 of 12

Table A2.3 Cont'd.

PR1 PR1 PR1 PR1 PR1 PR1 PR2 PR2 PR2 PR2 PR3 PR3 PR3 PR3 PR3 PR3 PR4 PR4 PR4 PR4 PR4 PR41997 1997 1997 1998 1998 1998 1997 1997 1997 1998 1997 1997 1997 1998 1998 1998 1997 1997 1997 1998 1998 1998

Spring Summer Fall Spring Summer Fall Spring Summer Fall Spring Spring Summer Fall Spring Summer Fall Spring Summer Fall Spring Summer FallLead (Pb) mg/L calculated - - <0.002 - - <0.002 - - <0.002 - - - <0.002 - - <0.002 - - <0.002 - - <0.002Lithium (Li) mg/L 0.87 0.00322 0.00362 0.00353 0.00491 0.004 0.003 0.00283 0.00322 0.00318 0.00447 0.00289 0.00378 0.00428 0.00452 0.004 0.005 0.00289 0.00349 0.00421 0.00513 0.002 0.005Manganese (Mn) mg/L - <0.003 <0.003 0.005 0.0138 0.0064 <0.003 <0.003 <0.003 0.012 0.0285 <0.003 <0.003 0.02 0.0434 0.0276 <0.003 <0.003 <0.003 0.011 0.0382 0.0311 <0.003Mercury (Hg)-Trace ng/L 5 - - - - - - - - - - - - - - - - - - - - - -Molybdenum (Mo) mg/L 0.073 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 <0.001 0.001 0.001 0.001 0.004 0.001 <0.001 <0.001 <0.001 0.001 0.003Nickel (Ni) mg/L calculated 0.003 0.001 <0.001 0.002 0.001 0.002 0.005 <0.001 0.001 0.003 0.003 0.001 <0.001 <0.001 0.001 0.002 0.003 <0.001 <0.001 0.002 0.01 <0.001Selenium (Se) mg/L 0.001 - - - - - - - - - - - - - - - - - - - - - -Silver (Ag) mg/L 0.0001 - - - - - - - - - - - - - - - - - - - - - -Strontium (Sr) mg/L - 0.0691 0.0927 0.141 0.0519 0.076 0.118 0.0756 0.105 0.1 0.057 0.0872 0.124 0.163 0.0676 0.104 0.288 0.0908 0.122 0.163 0.0669 0.108 0.262Sulphur mg/L - 3.54 3.12 - - 2.3 4.2 3.8 3.08 - - 3 3.44 - - 2.04 9.18 2.86 3.16 - - 2.02 7.69Thallium (Tl) mg/L 0.0008 - - - - - - - - - - - - - - - - - - - - - -Thorium mg/L - - - - - - - - - - - - - - - - - - - - - - -Tin (Sn) mg/L - <0.003 <0.003 0.005 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.004 <0.003 <0.003 <0.003 <0.003 <0.003Titanium (Ti) mg/L 0.100 0.007 0.0084 <0.005 0.0312 0.0053 <0.005 0.0071 <0.005 <0.005 0.0229 0.0057 0.0112 <0.005 0.0325 <0.005 <0.005 0.006 0.0079 <0.005 0.0318 0.0097 <0.005Uranium (U) mg/L 0.015 - - - - - - - - - - - - - - - - - - - - - -Vanadium (V) mg/L - 0.001 <0.001 <0.001 0.004 <0.001 <0.001 <0.001 <0.001 <0.001 0.004 <0.001 0.001 <0.001 0.004 <0.001 0.001 <0.001 <0.001 <0.001 0.005 <0.001 <0.001Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 0.0038 <0.003 0.0291 0.0075 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.0062Dissolved MetalsAluminum (Al) mg/L 0.1 - - - - - - - - - - - - - - - - - - - - - -Antimony (Sb) mg/L - - - - - - - - - - - - - - - - - - - - - - -Arsenic (As) mg/L 0.005 - - - - - - - - - - - - - - - - - - - - - -Barium (Ba) mg/L 5 - - - - - - - - - - - - - - - - - - - - - -Beryllium (Be) mg/L - - - - - - - - - - - - - - - - - - - - - -Bismuth (Bi) mg/L - - - - - - - - - - - - - - - - - - - - - -Boron (B) mg/L 1.2 - - - - - - - - - - - - - - - - - - - - - -Cadmium (Cd) mg/L calculated - - - - - - - - - - - - - - - - - - - - - -Chlorine (Cl) mg/L - - - - - - - - - - - - - - - - - - - - - - -Chromium (Cr) mg/L 0.001 - - - - - - - - - - - - - - - - - - - - - -Cobalt (Co) mg/L 0.11 - - - - - - - - - - - - - - - - - - - - - -Copper (Cu) mg/L calculated - - - - - - - - - - - - - - - - - - - - - -Iron (Fe) mg/L 0.3 - - - - - - - - - - - - - - - - - - - - - -Lead (Pb) mg/L calculated - - - - - - - - - - - - - - - - - - - - - -Lithium (Li) mg/L 0.87 - - - - - - - - - - - - - - - - - - - - - -Manganese (Mn) mg/L - - - - - - - - - - - - - - - - - - - - - - -Molybdenum (Mo) mg/L 0.073 - - - - - - - - - - - - - - - - - - - - - -Nickel (Ni) mg/L calculated - - - - - - - - - - - - - - - - - - - - - -Selenium (Se) mg/L 0.001 - - - - - - - - - - - - - - - - - - - - - -Silver (Ag) mg/L 0.0001 - - - - - - - - - - - - - - - - - - - - - -Strontium (Sr) mg/L - - - - - - - - - - - - - - - - - - - - - - -Sulphur mg/L - - - - - - - - - - - - - - - - - - - - - - -Thallium (Tl) mg/L 0.0008 - - - - - - - - - - - - - - - - - - - - - -Thorium mg/L - - - - - - - - - - - - - - - - - - - - - - -Tin (Sn) mg/L - - - - - - - - - - - - - - - - - - - - - - -Titanium (Ti) mg/L 0.100 - - - - - - - - - - - - - - - - - - - - - -Uranium (U) mg/L 0.015 - - - - - - - - - - - - - - - - - - - - - -Vanadium (V) mg/L - - - - - - - - - - - - - - - - - - - - - - -Zinc (Zn) mg/L 0.030 - - - - - - - - - - - - - - - - - - - - - -Calculated guideline values

Cadmium (mg/L) 0.000017 0.000021 0.000028 0.000016 0.000018 0.000033 0.000019 0.000022 0.000032 0.000016 0.000018 0.000022 0.000030 0.000016 0.000020 0.000037 0.000019 0.000022 0.000032 0.000017 0.000021 0.000038Copper (mg/L) 0.001204 0.001515 0.002035 0.001179 0.001279 0.002365 0.001344 0.001565 0.002306 0.001163 0.001306 0.00157 0.002157 0.001136 0.001432 0.002665 0.001355 0.001589 0.002265 0.0012 0.001474 0.002744

Lead (mg/L) 0.001164 0.001639 0.002544 0.001129 0.001273 0.003182 0.00137 0.001721 0.003065 0.001106 0.001313 0.001728 0.002774 0.001067 0.001507 0.003801 0.001387 0.00176 0.002984 0.001158 0.001573 0.00397nickel (mg/L) 0.052446 0.064332 0.083639 0.051478 0.055319 0.095577 0.057805 0.066217 0.093463 0.050858 0.056352 0.06638 0.088073 0.049791 0.06118 0.106288 0.05823 0.067112 0.091996 0.052271 0.062762 0.109086


Page 8 of 12

Table A2.3 Cont'd.

PR5 PR5 PR6 PR6 PR7 PR7 PR8 PR8 PR2 PR5 PR5 PR5 PR2 PR5 PR6 PR7 PR7 PR71998 1998 1998 1998 1998 1998 1998 1998 2006 2006 2006 2007 2008 2008 2008 2008 2008 2008

Summer Fall Summer Fall Summer Fall Summer Fall Winter Spring Winter Spring Winter Winter Spring Fall Spring SummerConventional VariablesAlkalinity, Total (as CaCO3) mg/L - 81 147 - 156 142 171 158 193 137 97 191 92 161 213 77 163 81 163Color, True T.C.U. - 40 15 - 20 25 12 25 20 10 25 7 37 5 8 - 13 - 13Conductivity (EC) uS/cm - 166 295 - 301 273 316 303 345 288 199 426 200 343 474 155 319 160 331Dissolved Organic Carbon mg/L - - - - - - - - - 2 6 3 8 3 2 8 8 - 4Dissolved Oxygen mg/L 5 - - - - - - - - 13.14 7.08 11.59 9.38 8.79 10.22 9.3 - - 9.7Hardness (as CaCO3) mg/L - 72.3 132 - 142 121 154 150 180 128 91 168 78 151 202 75 151 79 162pH pH 6.5-9 8.11 8.18 - 8.41 8.43 8.33 8.33 8.32 8 8.2 8.2 8.2 7.9 8.1 8.2 8.3 8.2 8.5Temperature oC - - - - - - - - 0.16 15.99 0.14 10.42 0.12 0.06 10.4 - - 11.6Total Dissolved Solids mg/L - 93 177 - 178 150 189 166 207 170 128 247 118 197 286 116 193 127 190Total Organic Carbon mg/L - 8.3 3.9 - 4 5.3 4 7.6 6.7 2 6 3 8 3 2 8 4 8 4Total Suspended Solids mg/L 18 <1.0 - <1.0 <1.0 <1.0 3 2 <3.0 <3.0 <3.0 21 <3.0 <3.0 13 <3.0 14 <3.0Turbidity NTU - - - - - - - - - - - 7.25 - 0.24 11.1 - - 7General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - - - - - - - - - 0.5 - 0.5 0.5 0.5 0.5 - 0.5 - 0.9Oil and Grease mg/L - - - - - - - - - - - - - - - - - 0.5 -Phenols (4AAP) mg/L 0.004 <0.001 <0.001 - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 - <0.001 0.003 <0.001 0.001 0.003 0.002 0.004 0.006Naphthenic Acids mg/L - - - - - - - - - 1 - <1.0 <1.0 <1.0 <1.0 <1.0 1 <1.0 <1.0Major IonsBicarbonate (HCO3) mg/L - 99 179 - 168 155 199 186 230 167 118 234 112 197 259 94 197 99 188Calcium (Ca) mg/L - 20.8 38.9 - 41.2 36 44.8 45 52.7 36 26.4 48.5 22.9 43.1 57.6 21.3 42.5 22.6 46.4Carbonate (CO3) mg/L - - - - - - - - - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 5Chloride (Cl) mg/L 230 3.1 1.1 - <0.5 <0.5 <0.5 <0.5 <0.5 2 1 1 1 1 <0.5 1 <0.5 1 <0.5Hydroxide (OH) mg/L - - - - - - - - - <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0Magnesium (Mg) mg/L - 4.9 8.5 - 9.6 7.6 10.3 9.1 11.7 9.3 6.1 11.3 5 10.6 14.1 5.3 10.8 5.5 11.2Potassium (K) mg/L - <1.0 <1.0 - <1.0 <1.0 <1.0 <1.0 <1.0 0.7 0.6 1 1.7 0.8 0.8 0.8 0.6 0.5 0.8Sodium (Na) mg/L - 7.1 19.1 - 16.2 10.4 15.5 8.9 13.9 10 12 32 11 12 29 8 14 7 16Sulfate (SO4) mg/L 50 7.1 20 - 15.6 9.4 14.7 6.8 11.4 13.3 11.5 32.1 9.6 16.5 39.3 6.5 13 6.2 14Sulphide mg/L 0.002 - - - - - - - - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.002 <0.002 <0.002Nutrients and BODBiochemical Oxygen Demand mg/L - - - - - - - - - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Ammonia-N mg/L 1.04 <0.05 <0.05 - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05Nitrate (as N) mg/L 13 - - - - - - - - 0.2 <0.1 - - - - - - <0.1 -Nitrate+Nitrite-N mg/L - 0.05 0.12 - <0.05 <0.05 <0.05 <0.05 <0.05 - - 0.3 <0.1 0.3 0.5 <0.1 <0.1 <0.1 <0.1Nitrite (as N) mg/L 0.06 - - - - - - - - - - - - - - - - <0.05 -Phosphorus, Total mg/L 0.05 0.06 0.05 - <0.05 0.06 <0.05 <0.05 <0.05 0.004 0.006 0.002 0.023 0.004 0.003 0.016 0.004 0.019 0.003Phosphorus, Total Dissolved mg/L 0.05 - - - - - - - - 0.002 <0.001 0.001 0.005 0.004 0.002 0.005 0.002 0.005 0.002Total Kjeldahl Nitrogen mg/L 1 0.16 0.1 - 0.15 0.74 0.18 0.23 0.23 <0.2 <0.2 <0.2 0.3 <0.2 <0.2 0.2 <0.2 0.3 <0.2Total MetalsAluminum (Al) mg/L 0.1 0.607 0.042 0.084 0.042 <0.002 0.061 0.108 0.212 0.0189 0.211 0.0111 0.649 0.0171 0.00755 0.645 0.0172 0.616 0.0149Antimony (Sb) mg/L - <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0000559 0.0000909 0.0000793 0.0000818 0.0000692 0.0000735 0.0000847 0.0000843 0.0000844 0.000102Arsenic (As) mg/L 0.005 - - - - - - - - 0.000284 0.000437 0.000238 0.000561 0.000283 0.000232 0.000574 0.000322 0.00058 0.000505Barium (Ba) mg/L 5 0.0806 0.124 0.109 0.121 0.106 0.109 0.111 0.124 0.119 0.0846 0.127 0.083 0.14 0.158 0.0761 0.118 0.0726 0.117Beryllium (Be) mg/L 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 <0.00001 <0.00001 <0.00001 0.0000307 <0.00001 <0.00001 0.0000286 <0.00001 0.0000205 <0.00001Bismuth (Bi) mg/L <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.007 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.0112 0.0111 0.0137 0.00932 0.0108 0.0153 0.0145 0.0109 0.0234 0.0108Cadmium (Cd) mg/L calculated - - - - - - - - 0.0000062 0.0000136 <0.000006 0.0000167 0.0000073 <0.000006 0.0000145 <0.000006 0.0000139 <0.000006Chlorine (Cl) mg/L - - - - - - - - - <0.3 <0.3 0.413 <0.3 0.634 1.01 <0.3 0.666 <0.3 0.32Chromium (Cr) mg/L 0.001 0.0016 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 <0.0003 0.000464 <0.0003 0.000933 <0.0003 <0.0003 0.00112 <0.0003 0.000943 <0.0003Cobalt (Co) mg/L 0.11 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 0.0000175 0.0000689 <0.00001 0.000225 0.0000194 <0.00001 0.000247 0.0000122 0.000243 0.0000145Copper (Cu) mg/L calculated 0.001 <0.001 <0.001 <0.001 <0.001 0.002 <0.001 <0.001 0.000734 0.00121 0.000498 0.00116 0.000605 0.000491 0.00172 0.000593 0.00145 0.000708Iron (Fe) mg/L 0.3 0.5 0.07 0.06 0.06 0.04 0.06 0.08 0.15 0.101 0.197 0.0402 0.594 0.102 0.0102 0.652 0.045 0.607 0.0159


Page 9 of 12

Table A2.3 Cont'd.

PR5 PR5 PR6 PR6 PR7 PR7 PR8 PR8 PR2 PR5 PR5 PR5 PR2 PR5 PR6 PR7 PR7 PR71998 1998 1998 1998 1998 1998 1998 1998 2006 2006 2006 2007 2008 2008 2008 2008 2008 2008

Summer Fall Summer Fall Summer Fall Summer Fall Winter Spring Winter Spring Winter Winter Spring Fall Spring SummerLead (Pb) mg/L calculated <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.0000221 0.000112 0.0000208 0.000284 0.000224 0.0000068 0.00037 0.0000134 0.000342 0.0000221Lithium (Li) mg/L 0.87 0.003 0.005 0.004 0.004 0.004 0.006 0.005 0.005 0.00381 0.00299 0.00495 0.00223 0.00305 0.00406 0.00121 0.00325 0.00102 0.00317Manganese (Mn) mg/L - 0.0227 <0.003 0.0074 0.004 0.0043 0.005 0.0259 0.017 0.00762 0.00524 0.0026 0.0256 0.0108 0.0019 0.016 0.0029 0.0153 0.0032Mercury (Hg)-Trace ng/L 5 - - - - - - - - <1.2 <1.2 <1.2 2.2 <1.2 <1.2 4.7 <1.2 4.4 <1.2Molybdenum (Mo) mg/L 0.073 <0.001 0.003 0.003 0.003 0.002 0.002 0.001 0.002 0.000669 0.000921 0.00181 0.000839 0.000682 0.00185 0.000586 0.00116 0.000562 0.00128Nickel (Ni) mg/L calculated <0.001 <0.001 <0.001 0.001 0.002 0.004 <0.001 0.002 <0.00006 0.000617 <0.00006 0.000847 0.000107 <0.00006 0.00126 <0.00006 0.0012 <0.00006Selenium (Se) mg/L 0.001 - - - - - - - - <0.0003 0.000237 0.000367 <0.0002 0.000319 0.000468 0.00021 <0.0002 0.000247 0.000275Silver (Ag) mg/L 0.0001 - - - - - - - - <0.000005 0.0000049 <0.000005 0.0000083 <0.000005 <0.000005 0.0000051 0.0000121 <0.000005 <0.000005Strontium (Sr) mg/L - 0.117 0.243 0.169 0.218 0.168 0.233 0.19 0.249 0.18 0.133 0.265 0.125 0.168 0.234 0.109 0.188 0.107 0.209Sulphur mg/L - 2.12 6.32 3.53 5.17 3.02 3.91 2.27 3.8 4.8 3.42 10.7 2.57 5.56 19.3 1.83 5.09 1.69 4.78Thallium (Tl) mg/L 0.0008 - - - - - - - - 0.0000036 0.0000082 <0.000003 0.0000136 <0.000003 <0.000003 0.0000127 0.0000046 0.0000122 0.0000062Thorium mg/L - - - - - - - - - <0.00003 0.0000105 <0.00003 0.0000944 <0.00003 <0.00003 0.000134 <0.00003 0.000128 <0.00003Tin (Sn) mg/L - <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.00007 <0.00003 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 0.000217Titanium (Ti) mg/L 0.100 0.0148 <0.005 <0.005 <0.005 <0.005 0.0215 <0.005 <0.005 0.00467 0.00319 0.00829 0.015 0.000993 0.00139 0.0173 0.00105 0.0153 0.000961Uranium (U) mg/L 0.015 - - - - - - - - 0.000319 0.000229 0.000744 0.000261 0.000398 0.000995 0.000244 0.000475 0.000258 0.000503Vanadium (V) mg/L - 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.0001 0.000829 0.0001 0.00202 0.0001 0.0001 0.00224 0.0001 0.00203 0.000233Zinc (Zn) mg/L 0.030 <0.003 0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.00321 0.0142 <0.003 0.0113 <0.003 <0.003 0.00306 <0.003 <0.003 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 - - - - - - - - 0.00252 0.0284 <0.001 0.0178 0.00151 <0.001 0.0738 0.00123 0.0559 0.0023Antimony (Sb) mg/L - - - - - - - - - 0.0000553 0.0000909 0.0000785 0.000081 0.0000685 0.0000728 0.0000839 0.0000835 0.0000836 0.000101Arsenic (As) mg/L 0.005 - - - - - - - - 0.000232 0.000353 0.000223 0.000352 0.000227 0.000205 0.000361 0.000293 0.000361 0.000475Barium (Ba) mg/L 5 - - - - - - - - 0.112 0.0748 0.126 0.0681 0.137 0.151 0.061 0.114 0.0604 0.114Beryllium (Be) mg/L - - - - - - - - <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L - - - - - - - - <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 - - - - - - - - 0.0103 0.0103 0.0129 0.00878 0.0105 0.014 0.0122 0.0101 0.0178 0.0107Cadmium (Cd) mg/L calculated - - - - - - - - <0.000006 <0.000006 <0.000006 <0.000006 0.0000072 <0.000006 <0.000006 <0.000006 <0.000006 <0.000006Chlorine (Cl) mg/L - - - - - - - - - <0.3 0.15 0.409 <0.3 0.489 1 <0.3 0.629 <0.3 0.317Chromium (Cr) mg/L 0.001 - - - - - - - - <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000365 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 - - - - - - - - <0.00001 0.0000283 <0.00001 0.0000245 0.000013 <0.00001 0.0000595 <0.00001 0.0000527 0.0000144Copper (Cu) mg/L calculated - - - - - - - - 0.000646 0.000874 0.000493 0.000737 0.000584 0.000486 0.0017 0.000587 0.00144 0.000701Iron (Fe) mg/L 0.3 - - - - - - - - 0.021 0.0391 <0.004 0.038 0.0095 <0.004 0.0897 0.0122 0.0726 <0.004Lead (Pb) mg/L calculated - - - - - - - - <0.000006 0.0000238 <0.000006 0.0000193 <0.000006 <0.000006 0.0000628 <0.000006 0.0000561 0.0000219Lithium (Li) mg/L 0.87 - - - - - - - - 0.00356 0.00279 0.00494 0.00193 0.00294 0.0039 0.000946 0.00314 0.00101 0.00314Manganese (Mn) mg/L - - - - - - - - - 0.00601 0.00149 0.0021 0.000845 0.00939 0.00152 0.00462 0.00134 0.00363 0.000959Molybdenum (Mo) mg/L 0.073 - - - - - - - - 0.000631 0.000861 0.00179 0.000831 0.000678 0.00181 0.00058 0.00115 0.000556 0.00127Nickel (Ni) mg/L calculated - - - - - - - - <0.00006 0.000394 <0.00006 0.000308 0.000082 <0.00006 0.000603 <0.00006 0.000562 <0.00006Selenium (Se) mg/L 0.001 - - - - - - - - <0.0003 <0.0003 0.000346 <0.0002 0.000318 0.000433 <0.0002 <0.0002 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 - - - - - - - - <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - - - - - - - - - 0.178 0.125 0.262 0.121 0.162 0.226 0.109 0.184 0.106 0.209Sulphur mg/L - - - - - - - - - 4.26 0.3 10.6 2.57 5.08 18.6 1.82 5.04 1.69 4.73Thallium (Tl) mg/L 0.0008 - - - - - - - - 0.0000036 0.0000053 <0.000003 0.0000036 <0.000003 <0.000003 <0.000003 0.0000039 <0.000003 0.0000062Thorium mg/L - - - - - - - - - <0.00003 <0.00003 <0.00003 0.0000325 <0.00003 <0.00003 0.0000526 <0.00003 0.0000405 <0.00003Tin (Sn) mg/L - - - - - - - - - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 - - - - - - - - 0.00411 0.00134 0.00802 0.00109 0.000874 0.00065 0.00304 0.000698 0.00234 0.000719Uranium (U) mg/L 0.015 - - - - - - - - 0.000302 0.000198 0.000737 0.000229 0.000379 0.000962 0.000208 0.000467 0.000211 0.000493Vanadium (V) mg/L - - - - - - - - - 0.0001 0.000278 0.0001 0.0001 0.0001 0.0001 0.000402 0.0001 0.000329 0.000211Zinc (Zn) mg/L 0.030 - - - - - - - - <0.003 0.00293 <0.003 0.00335 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline values

Cadmium (mg/L) 0.000025 0.000042 0.000025 0.000045 0.000039 0.000048 0.000047 0.000055 0.0000409 0.0000305 0.0000517 0.0000267 0.0000472 0.0000606 0.0000259 0.0000472 0.0000270 0.0000501Copper (mg/L) 0.001792 0.002998 0.001792 0.003191 0.002783 0.00342 0.003344 0.003908 0.0029201 0.0021817 0.0036840 0.0019124 0.0033630 0.0043123 0.0018494 0.0033630 0.0019334 0.0035712

Lead (mg/L) 0.002105 0.00453 0.002105 0.004972 0.004055 0.005513 0.005331 0.006724 0.0043563 0.0028217 0.0061583 0.0023189 0.0053763 0.0077868 0.0022060 0.0053763 0.0023568 0.0058797nickel (mg/L) 0.074696 0.118029 0.074696 0.124765 0.110476 0.132699 0.130071 0.149403 0.1153006 0.0889659 0.1417709 0.0791305 0.1307298 0.1630869 0.0768066 0.1307298 0.0799004 0.1379061


Page 10 of 12

Table A2.4 Cont'd.

PR8 PR8 PR8 ET4 ET4 PR5 PR6 PR6 PR7 PR7 PR8 PR82008 2008 2008 2009 2009 2009 2009 2009 2009 2009 2009 2009Fall Spring Summer Fall Summer Fall Fall Winter Summer Winter Summer Winter

Conventional VariablesAlkalinity, Total (as CaCO3) mg/L - 191 98 175 200 - 169 168 226 - 226 - 255Color, True T.C.U. - 18 - 23 - - - - 5 - 6 - 8Conductivity (EC) uS/cm - 353 187 341 368 - 360 347 512 - 491 - 495Dissolved Organic Carbon mg/L - 6 11 7 4.1 - 3.3 3.6 2 9.1 3 9.9 4Dissolved Oxygen mg/L 5 - - 11.3 10.7 10.3 11.7 9.7 11.47 - 11.57 - 9.83Hardness (as CaCO3) mg/L - 175 95 169 <1.0 - 148 156 193 - 195 - 212pH pH 6.5-9 8.3 8.2 8.4 8.36 - 8.34 8.34 8.2 - 8.2 - 8.1Temperature oC - 13.4 14.5 4.2 14.6 2.4 - 0.06 15.4 0.04 18.4 0.06Total Dissolved Solids mg/L - 224 135 204 209 136 206 200 322 141 305 156 307Total Organic Carbon mg/L - 6 11 7 4 13.9 3.4 3.5 2 8.8 3 10 4Total Suspended Solids mg/L <3.0 51 3 217 5 216 203 <3.0 20 <3.0 36 <3.0Turbidity NTU - 14.8 11 - 0.01 - - 0.15 0.01 0.2 - 1.5General OrganicsHydrocarbons, Recoverable (I.R.) mg/L - 0.5 - 0.5 - - - - 0.5 - 1.6 - 0.5Oil and Grease mg/L - - 0.5 - - - - - - 0.5 - 0.5 -Phenols (4AAP) mg/L 0.004 0.002 0.004 0.003 <0.001 0.0029 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001Naphthenic Acids mg/L - <1.0 <1.0 <1.0 - <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0Major IonsBicarbonate (HCO3) mg/L - 227 120 204 237 <5.0 202 200 275 - 276 - 312Calcium (Ca) mg/L - 49.9 27.4 48.7 48.4 <0.5 43.3 45.1 55.5 - 56.6 - 60.9Carbonate (CO3) mg/L - <5.0 <5.0 <5.0 <5.0 - <5.0 <5.0 <5.0 - <5.0 - <5.0Chloride (Cl) mg/L 230 1 1 <0.5 <0.5 - 5.14 0.7 <0.5 - <0.5 - <0.5Hydroxide (OH) mg/L - <5.0 <5.0 <5.0 10.1 - <5.0 <5.0 <5.0 - <5.0 - <5.0Magnesium (Mg) mg/L - 12.3 6.5 11.5 <0.1 - 9.74 10.5 13.3 - 13.1 - 14.5Potassium (K) mg/L - 0.6 0.6 0.8 0.96 - 1 0.98 1.1 - 1 - 1.1Sodium (Na) mg/L - 13 7 13 13.2 - 24.6 20.2 36 - 29 - 23Sulfate (SO4) mg/L 50 7.9 5.1 8.5 4.96 - 29.9 21.6 54.4 - 43.1 - 21.7Sulphide mg/L 0.002 <0.002 0.003 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.002 <0.002 <0.002 <0.002Nutrients and BODBiochemical Oxygen Demand mg/L - <2.0 <2.0 <2.0 <2.0 - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0Ammonia-N mg/L 1.04 <0.05 <0.05 <0.05 - - - - <0.05 <0.05 <0.05 <0.05 <0.05Nitrate (as N) mg/L 13 - <0.1 - <0.1 - - - - - - - -Nitrate+Nitrite-N mg/L - <0.1 <0.1 <0.1 - - 0.157 <0.1 0.3 - 0.3 - 0.2Nitrite (as N) mg/L 0.06 - <0.05 - <0.05 - - - - - - - -Phosphorus, Total mg/L 0.05 0.006 0.053 0.009 <0.001 <0.001 <0.001 <0.001 <0.001 0.0185 0.002 0.0376 0.004Phosphorus, Total Dissolved mg/L 0.05 0.003 0.005 0.003 <0.001 - <0.001 <0.001 <0.001 0.003 <0.001 0.0046 0.002Total Kjeldahl Nitrogen mg/L 1 0.3 0.5 0.2 <0.2 0.81 <0.2 <0.2 <0.2 - <0.2 - 0.2Total MetalsAluminum (Al) mg/L 0.1 0.0656 1.37 0.0589 0.0553 0.188 0.0171 0.0162 0.00678 0.885 0.0107 1.75 0.0378Antimony (Sb) mg/L - 0.0000703 0.000104 0.0000927 0.000061 0.0000565 0.0000804 0.000096 0.000085 0.0000963 0.0000847 0.000107 0.0000702Arsenic (As) mg/L 0.005 0.000554 0.00103 0.000823 0.000517 0.000727 0.000348 0.000375 0.000254 0.000706 0.000317 0.00129 0.000417Barium (Ba) mg/L 5 0.117 0.0892 0.109 0.107 0.048 0.128 0.129 0.171 0.094 0.164 0.112 0.159Beryllium (Be) mg/L <0.00001 0.0000671 <0.00001 <0.00001 0.0000132 <0.00001 <0.00001 <0.00001 0.000045 <0.00001 0.000063 <0.00001Bismuth (Bi) mg/L <0.00001 0.0000104 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 0.00001 <0.00001Boron (B) mg/L 1.2 0.0116 0.0336 0.0118 0.00937 0.0101 0.0124 0.0123 0.0133 0.0162 0.0119 0.0129 0.0138Cadmium (Cd) mg/L calculated 0.0000081 0.0000311 0.0000088 <0.000006 0.0000083 <0.000006 <0.000006 0.0000117 0.0000167 0.0000087 0.0000273 0.0000107Chlorine (Cl) mg/L - 1.42 <0.3 0.799 <0.3 <0.3 0.449 0.532 0.449 <0.3 0.376 <0.3 0.665Chromium (Cr) mg/L 0.001 <0.0003 0.00206 <0.0003 <0.0003 0.000413 <0.0003 <0.0003 <0.0003 0.0012 <0.0003 0.00199 <0.0003Cobalt (Co) mg/L 0.11 0.0000426 0.000753 0.000054 <0.00001 0.0000885 <0.00001 <0.00001 <0.00001 0.000286 <0.00001 0.00054 0.0000187Copper (Cu) mg/L calculated 0.000643 0.00257 0.000913 0.000565 0.000735 0.000519 0.000595 0.000583 0.00127 0.000547 0.00198 0.000575Iron (Fe) mg/L 0.3 0.156 1.7 0.158 0.0569 0.31 0.0239 0.0543 <0.004 0.752 0.0175 1.5 0.147


Page 11 of 12

Table A2.4 Cont'd.

PR8 PR8 PR8 ET4 ET4 PR5 PR6 PR6 PR7 PR7 PR8 PR82008 2008 2008 2009 2009 2009 2009 2009 2009 2009 2009 2009Fall Spring Summer Fall Summer Fall Fall Winter Summer Winter Summer Winter

Lead (Pb) mg/L calculated 0.0000468 0.000975 0.0000709 0.0000276 0.0000872 0.0000082 0.0000161 0.0000245 0.00111 0.0000206 0.000771 0.0000482Lithium (Li) mg/L 0.87 0.0039 0.00134 0.00387 0.00524 0.00362 0.00501 0.00522 0.0045 0.00466 0.00409 0.00565 0.00548Manganese (Mn) mg/L - 0.0159 0.0483 0.0175 0.0114 0.0192 0.00295 0.00292 0.00306 0.0203 0.00305 0.0555 0.015Mercury (Hg)-Trace ng/L 5 <1.2 7 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2Molybdenum (Mo) mg/L 0.073 0.000897 0.000435 0.000949 0.000854 0.000369 0.0018 0.00163 0.00163 0.000819 0.00135 0.000639 0.00097Nickel (Ni) mg/L calculated <0.00006 0.00246 0.000255 <0.00006 0.00065 <0.00006 <0.00006 <0.00006 0.000882 <0.00006 0.00154 <0.00006Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.00021 <0.0002 0.000484 <0.0002 0.000418 <0.0002 0.0003Silver (Ag) mg/L 0.0001 <0.000005 0.0000103 <0.000005 <0.000005 <0.000005 <0.000005 0.0000051 <0.000005 <0.000005 <0.000005 0.0000169 0.0000196Strontium (Sr) mg/L - 0.218 0.119 0.205 0.35 0.109 0.243 0.245 0.362 0.141 0.336 0.167 0.379Sulphur mg/L - 3.63 1.15 2.81 1.32 <0.6 7.48 6.35 17 1.85 13.2 0.686 7.07Thallium (Tl) mg/L 0.0008 0.0000057 0.0000268 0.0000087 0.0000039 <0.000003 0.0000032 0.0000046 <0.000003 0.0000062 0.0000034 0.0000194 0.0000041Thorium mg/L - <0.00003 0.000314 <0.00003 <0.00003 0.0000393 <0.00003 <0.00003 <0.00003 0.000136 <0.00003 0.000302 <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.00225 0.0386 0.00252 0.00254 0.00366 0.00128 0.00138 0.00112 0.0191 0.00122 0.0407 0.0019Uranium (U) mg/L 0.015 0.000519 0.000339 0.000485 0.000668 0.000105 0.000682 0.000621 0.00104 0.00032 0.000903 0.000414 0.0009Vanadium (V) mg/L - 0.000338 0.00402 0.000471 0.000302 0.000544 0.0001 0.000201 0.0001 0.00211 0.0001 0.00385 0.0001Zinc (Zn) mg/L 0.030 <0.003 0.00669 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 0.00547 <0.003Dissolved MetalsAluminum (Al) mg/L 0.1 0.00159 0.0405 0.00391 0.00141 0.0321 0.00145 0.00165 <0.001 0.0155 0.00153 0.00867 <0.001Antimony (Sb) mg/L - 0.0000696 0.000103 0.0000918 0.0000604 0.0000559 0.0000796 0.000095 0.0000842 0.000095 0.0000839 0.000106 0.0000695Arsenic (As) mg/L 0.005 0.000436 0.000485 0.000752 0.000496 0.00061 0.000323 0.000328 0.000208 0.000479 0.000309 0.0007 0.00032Barium (Ba) mg/L 5 0.108 0.0602 0.102 0.102 0.0421 0.121 0.121 0.171 0.0763 0.159 0.0829 0.15Beryllium (Be) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Bismuth (Bi) mg/L <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001 <0.00001Boron (B) mg/L 1.2 0.0103 0.0333 0.0107 0.00834 0.0087 0.0114 0.0114 0.0132 0.016 0.0113 0.0128 0.0127Cadmium (Cd) mg/L calculated <0.000006 <0.000006 0.0000081 <0.000006 <0.000006 <0.000006 <0.000006 0.0000116 <0.000006 0.0000086 <0.000006 0.0000092Chlorine (Cl) mg/L - 1.33 <0.3 0.791 <0.3 <0.3 0.445 0.527 0.445 <0.3 0.372 <0.3 0.603Chromium (Cr) mg/L 0.001 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 <0.0003 0.000844 <0.0003 <0.0003 <0.0003Cobalt (Co) mg/L 0.11 0.0000219 0.0000625 0.0000326 <0.00001 0.0000192 <0.00001 <0.00001 <0.00001 0.0000251 <0.00001 0.0000199 <0.00001Copper (Cu) mg/L calculated 0.000628 0.00175 0.000904 0.000559 0.000728 0.000514 0.000594 0.000577 0.000896 0.000542 0.000791 0.000569Iron (Fe) mg/L 0.3 0.0294 0.0925 0.0357 0.0154 0.147 <0.004 <0.004 <0.004 0.0445 <0.004 0.0393 <0.004Lead (Pb) mg/L calculated 0.0000089 0.000059 0.0000224 0.0000182 0.0000468 <0.000006 <0.000006 0.0000096 0.000102 0.0000204 0.0000334 0.0000073Lithium (Li) mg/L 0.87 0.00367 0.00111 0.00357 0.00521 0.00322 0.00486 0.00456 0.00446 0.0045 0.00389 0.00497 0.00531Manganese (Mn) mg/L - 0.00828 0.00616 0.00495 0.00814 0.00179 0.00184 0.00153 0.00239 0.000607 0.00167 0.000625 0.0123Molybdenum (Mo) mg/L 0.073 0.000859 0.000431 0.000917 0.000845 0.000363 0.00172 0.00157 0.00161 0.000811 0.00135 0.000633 0.000963Nickel (Ni) mg/L calculated <0.00006 0.00053 0.000157 <0.00006 0.000497 <0.00006 <0.00006 <0.00006 0.000736 <0.00006 0.000148 <0.00006Selenium (Se) mg/L 0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000453 <0.0002 0.000414 <0.0002 <0.0002Silver (Ag) mg/L 0.0001 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005Strontium (Sr) mg/L - 0.206 0.118 0.196 0.339 0.102 0.23 0.233 0.361 0.135 0.331 0.162 0.362Sulphur mg/L - 3.44 1.06 2.75 1.25 <0.6 7.05 6.29 16.8 1.77 12.8 0.682 6.48Thallium (Tl) mg/L 0.0008 0.0000045 <0.000003 0.0000077 0.0000035 <0.000003 <0.000003 0.0000045 <0.000003 <0.000003 0.0000032 <0.000003 0.0000033Thorium mg/L - <0.00003 0.0000349 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003 <0.00003Tin (Sn) mg/L - <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007 <0.00007Titanium (Ti) mg/L 0.100 0.00088 0.00225 0.00094 0.000871 0.00153 0.000725 0.000722 0.00098 0.00126 0.000925 0.0013 0.00119Uranium (U) mg/L 0.015 0.000489 0.00025 0.000461 0.000632 0.0000813 0.000633 0.000578 0.00103 0.000276 0.000896 0.00033 0.000863Vanadium (V) mg/L - 0.0001 0.000368 0.00029 0.000201 0.000237 0.0001 0.0002 0.0001 0.000257 0.0001 0.000326 0.0001Zinc (Zn) mg/L 0.030 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003Calculated guideline values

Cadmium (mg/L) 0.0000536 0.0000317 0.0000520 0.0000003 0.0000005 0.0000464 0.0000485 0.0000583 0.0000501 0.0000588 0.0000520 0.0000632Copper (mg/L) 0.0038147 0.0022634 0.0037027 0.0000256 0.0000382 0.0033058 0.0034579 0.0041476 0.0035712 0.0041843 0.0037027 0.0044941

Lead (mg/L) 0.0064868 0.0029805 0.0062050 0.0000037 0.0000068 0.0052407 0.0056039 0.0073478 0.0058797 0.0074449 0.0062050 0.0082808nickel (mg/L) 0.1462383 0.0919226 0.1424118 0.0017044 0.0024361 0.1287511 0.1340068 0.1575345 0.1379061 0.1587737 0.1424118 0.1691872


Page 12 of 12

Appendix A3

Surface Water Quality Model

Description and Results

Surface Water Quality Report A3-i Hatfield Robb Trend Extension Project

TABLE OF CONTENTS

LIST OF TABLES ........................................................................................... i LIST OF FIGURES ......................................................................................... ii

A3.0 SURFACE WATER QUALITY MODEL ................................................ 1

A3.1 OVERVIEW ............................................................................................................ 1 A3.2 MODEL STRUCTURE ............................................................................................ 1 A3.3 SIMULATED WATERCOURSES ............................................................................ 1 A3.4 SOURCES OF IMPOUNDMENT DATA .................................................................. 3 A3.5 DERIVATION OF MODEL TERMS ......................................................................... 3 A3.5.1 Surface Water Quality Variables Considered ..................................................... 3 A3.5.2 Baseline Case Concentrations of Surface Water Quality Variables in

Natural Watercourses ........................................................................................ 3 A3.5.3 Baseline Case Watercourse Flow...................................................................... 3 A3.5.4 Number of Impoundments ................................................................................. 4 A3.5.5 Impoundment Discharge Flows ......................................................................... 4 A3.5.6 Impoundment Water Quality .............................................................................. 4 A3.6 ANALYSIS .............................................................................................................. 9 A3.6.1 Simulation Procedure ........................................................................................ 9 A3.7 ASSUMPTIONS ................................................................................................... 11 A3.8 RESULTS ............................................................................................................. 11

LIST OF TABLES

Table A3.1 Watercourses simulated by water quality model. ......................................... 2

Table A3.2 Water quality of impoundment discharges. .................................................. 5

Table A3.3 Predicted changes in surface water quality, Bryan Creek at confluence with Embarras River. ............................................................... 12

Table A3.4 Predicted changes in surface water quality in Embarras River at confluence with Mitchell Creek. ................................................................. 13

Table A3.5 Predicted changes in surface water quality in Erith River immediately downstream of confluence with Bacon Creek. ....................... 14

Table A3.6 Predicted changes in surface water quality in Halpenny Creek at confluence with Erith River. ....................................................................... 15

Table A3.7 Predicted changes in surface water quality in Hay Creek at confluence with Embarras River. ............................................................... 16

Table A3.8 Predicted changes in surface water quality in Lendrum Creek at confluence with Lund Creek. ..................................................................... 17

Surface Water Quality Report A3-ii Hatfield Robb Trend Extension Project

Table A3.9 Predicted changes in surface water quality in Lund Creek at confluence with Lendrum Creek. ............................................................... 18

Table A3.10 Predicted changes in surface water quality in Embarras River at confluence with Erith River. ....................................................................... 19

Table A3.11 Predicted changes in surface water quality in Erith River at confluence with Embarras River. ............................................................... 20

LIST OF FIGURES

Figure A3.1 Summary of historical impoundment discharges, May to October. .............. 4

Surface Water Quality Report A3-1 Hatfield Robb Trend Mine Project

A3.0 SURFACE WATER QUALITY MODEL

A3.1 OVERVIEW

This surface water quality model predicts the effects of mine impoundment discharges on natural watercourses and is applied to impoundments planned for the Robb Trend Coal Mine Project (the Project). The model uses empirical distributions of impoundment discharges, impoundment water quality and surface water quality of natural watercourses against Baseline Case flow conditions to predict changes in surface water quality in the Application Case in receiving environments in the Local Study Area (LSA) and Regional Study Area (RSA).

A3.2 MODEL STRUCTURE

The surface water quality model has the following form:

sj

sj

QINQBQINWQIQBWQBWQP

s

sssisi

,

, )(,,

+

+= , where

WQPi,s predicted concentration of water quality variable i in watercourse k in season s;

WQBi,s Baseline Case concentration of water quality variable i in watercourse k in season s;

QBs Baseline Case flow of watercourse k in season s;

WQIs concentration of water quality variable i in impoundments in season s;

N Number of impoundments within drainage of watercourse k (Table A3.1); and

QIj,s discharge flow from impoundment j in season s.

A3.3 SIMULATED WATERCOURSES

The surface water quality model is applied to the following watercourses in the LSA (Table A3.1):

Bryan Creek at its confluence with the Embarras River;

Hay Creek at its confluence with the Embarras River;

Lendrum Creek at its confluence with Lund Creek;

Halpenny Creek (including Bacon Creek) at its confluence with the Erith River;


Table A3.1 Watercourses simulated by water quality model.

Watercourse Location at which Model is Applied

Drainage Area (km2)

Type of Watershed and Baseline Water Quality Used

No. Impoundments

Mean May to Oct Flow (m3/s)

Local Study Area

Bryan Creek At confluence with the Embarras River 23 Not downstream of existing mines 4 0.32

Embarras River At confluence with Mitchell Creek 164 Downstream of existing mines 3 2.06

Erith River Immediately downstream of confluence with Bacon Creek 93 Downstream of existing mines 14 1.37

Hay Creek At confluence with the Embarras River 32 Not downstream of existing mines 1 0.13

Halpenny River At confluence with the Erith River 32 Downstream of existing mines 12 0.47

Lendrum Creek At confluence with Lund Creek 55 Not downstream of existing mines 2 0.81

Lund Creek At confluence with Lendrum Creek 115 Not downstream of existing mines 5 1.17

Regional Study Area

Embarras River At confluence with the Erith River 707 Downstream of existing mines 8 5.91

Erith River At confluence with the Embarras River 975 Downstream of existing mines 33 9.94

Source of information obtained from Matrix (2012) of this Application.


Lund Creek at its confluence with Lendrum Creek;

Embarras River at its confluence with Mitchell Creek; and

Erith River at its confluence with Lendrum Creek.

The surface water quality model is applied to the following watercourses in the RSA (Table A3.1):

Embarras River at its confluence with the Erith River; and

Erith River at its confluence with the Embarras River.

A3.4 SOURCES OF IMPOUNDMENT DATA

Data gathered from the following impoundments were used to estimate impoundment water quality and impoundment discharge flows: Centre Creek; Erith Pond; Halpenny East; Halpenny West; Mercoal Pond; Pit 14M; Pit 15; Pit 16; Pit 17; Pit 18; Pit 24 5M; Pit 25 East; Pit 26 East 10M; Pit 33 U/G; Pit 122; and Val D'Or East. These impoundments receive a mixture of pit water, surface runoff, runoff from waste rock piles, water from sumps, and groundwater, and therefore represent a cross-section of types of impoundments that are planned for the Project. Impoundment water quality data were obtained from Coal Valley Resources Inc. (CVRI), collected as part of water quality monitoring requirements and baseline data collection.

A3.5 DERIVATION OF MODEL TERMS

A3.5.1 Surface Water Quality Variables Considered

The following surface water quality variables with surface water quality guidelines (Table 4, Section 2 of main report) were simulated: aluminum; ammonia; arsenic; barium; boron; cadmium; chloride; chromium; cobalt; copper; dissolved phosphorous; iron; lead; lithium; mercury; molybdenum; nickel; phenols; selenium; silver; sulphate; thallium; titanium; total phosphorus; total suspended solids; uranium; and zinc. Both dissolved and total forms of all metals were used in simulations with the exception of mercury for which only total mercury concentrations were simulated.

A3.5.2 Baseline Case Concentrations of Surface Water Quality Variables in Natural Watercourses

Baseline Case concentrations of surface water quality variables in natural watercourses were compiled from data summarized in Section 3 of the main report and presented in detail in Appendix A2 for the LSA and the RSA.

A3.5.3 Baseline Case Watercourse Flow

The Baseline Case watercourse flows used in the model (Table A3.1) are the mean May to October flow at each of the locations in the LSA and RSA at which the model was applied (Section A3.3). Mean May to October flow rates were obtained from Matrix (2012).


A3.5.4 Number of Impoundments

The number of impoundments within drainages of natural watercourses is taken from information provided in Matrix (2012) (Table A3.1).

A3.5.5 Impoundment Discharge Flows

Impoundment discharge data for May to October were obtained from annual compliance reports prepared by Coal Valley Mine and are summarized in Figure A3.1. The probability of any flow occurring in the May to October period (probability of impoundment flow) is 50%, with discharge flows of up to 0.36 m3/s.

Figure A3.1 Summary of historical impoundment discharges, May to October.

0

10

20

30

40

50

60

70

80

90

100

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4

Cum

ulat

ive

Prob

abili

ty (%

)

Impoundment Flow (m3/s)

Data obtained from annual compliance reports prepared by Coal Valley Mine.

A3.5.6 Impoundment Water Quality

As indicated above, impoundment water quality data were obtained from annual CVRI monitoring reports as well as from the results of sampling five existing impoundments (Erith, Halpenny East, Pit 15, Pit 122, and Mercoal Ponds) in September 2006, and from field sampling of nine impoundments (Erith Pond, Mercoal Pond, Pit 14M, Pit 15, Pit 16, Pit 17, Pit 18, Pit 24 5M and Pit 25 East 10M) between 2008 and 2011(Table A3.2).


Table A3.2 Water quality of impoundment discharges.


Centre Creek

Halpenny East

Halpenny West

Pit 25 East

Val D'or East

Centre Creek

Centre Creek

Halpenny East

Halpenny West Pit 15

May May May May May May May June June June 1999 1999 1999 1999 1999 2002 2003 2003 2003 2003

Aluminum (dissolved) - - - - - - - - - - Aluminum (total) 0.44 1.71 0.49 1.78 0.38 0.0700 0.1300 0.07 0.08 0.03 Ammonia-N - - - - - <0.05 <0.05 <0.05 <0.05 <0.05 Arsenic (dissolved) - - - - - - - - - - Arsenic (total) - - - - - - - - - - Barium (dissolved) - - - - - - - - - - Barium (total) - - - - - 0.0402 0.0458 0.0628 0.0714 0.172 Boron (dissolved) - - - - - - - - - - Boron (total) - - - - - <0.02 <0.02 0.033 0.063 0.033 Cadmium (dissolved) - - - - - - - - - - Cadmium (total) - - - - - - - - - - Chloride - - - - - - - <0.5 <0.5 <0.5 Chromium (dissolved) - - - - - - - - - - Chromium (total) <0.0008 <0.0008 <0.0008 <0.0008 <0.0008 0.0014 <0.0008 <0.0008 <0.0008 <0.0008 Cobalt (dissolved) - - - - - - - - - - Cobalt (total) <0.0007 <0.0007 <0.0007 <0.0007 <0.0007 <0.0002 <0.0002 0.0002 <0.0002 <0.0002 Copper (dissolved) - - - - - - - - - - Copper (total) <0.001 <0.001 <0.001 0.001 <0.001 <0.001 0.0020 0.0012 0.002 0.0012 Iron (dissolved) - - - - - - - - - - Iron (total) 0.183 1.12 0.319 0.673 0.298 0.1510 0.1500 1.118 0.094 0.051 Lead (dissolved) - - - - - - - - - - Lead (total) <0.002 <0.002 <0.002 <0.002 <0.002 <0.0001 <0.0001 0.0001 0.0001 <0.0001 Lithium (dissolved) - - - - - - - - - - Lithium (total) - - - - - - - - - - Mercury (dissolved) - - - - - - - - - - Mercury (ultra-trace) - - - - - - - - - - Molybdenum (dissolved) - - - - - - - - - - Molybdenum (total) 0.079 <0.001 <0.001 0.064 <0.001 0.0010 <0.001 0.0016 0.0045 0.0017 Nickel (dissolved) - - - - - - - - - - Nickel (total) 0.004 <0.001 <0.001 0.002 <0.001 0.0006 0.0002 0.0006 0.0009 0.0005 Nitrate - - - - - - - - - - Nitrite - - - - - - - - - - pH - - - - - 7.9 7.2 8.4 8.6 8.6 Phenols - - - - - <0.001 <0.001 - - - Phosphorus (dissolved) - - - - - <0.001 - - - - Phosphorus (total) - - - - - - 0.03 <0.001 <0.001 <0.001 Selenium (dissolved) - - - - - - - - - - Selenium (total) - - - - - <0.0008 <0.0008 0.0014 0.0014 0.0012 Silver (total) - - - - - - - - - - Silver (dissolved) - - - - - - - - - - Sulphate (SO4) - - - - - 6.1 3.7 19.5 33.0 7.0 Sulphide (S) - - - - - - - - - - Thallium (dissolved) - - - - - - - - - - Thallium (total) - - - - - <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 Titanium (dissolved) - - - - - - - - - - Titanium (total) - - - - - <0.005 <0.005 <0.005 <0.005 <0.005 Uranium (dissolved) - - - - - - - - - - Uranium (total) - - - - - 0.0002 <0.0001 0.0007 0.0028 0.0004 Zinc (total) 0.007 0.007 <0.003 0.005 0.019 0.0120 <0.003 <0.003 <0.003 <0.003 Zinc (dissolved) - - - - - - - - - -

All values are expressed in mg/L.


Table A3.2 (Cont’d.)


Pit 33 U/G

Centre Creek

Erith Pond

Halpenny East

Mercoal Pond Pit 122 Pit 15 Erith

Pond June June September September September September September August 2003 2004 2006 2006 2006 2006 2006 2008

Aluminum (dissolved) - - 0.0328 0.0269 0.028 0.00366 0.029 0.0155 Aluminum (total) 0.05 1.8000 0.464 0.564 0.134 0.494 8.23E-01 0.154 Ammonia-N <0.05 <0.05 0.08 <0.05 <0.05 0.4 <0.05 <0.05 Arsenic (dissolved) - - 0.000687 0.000638 0.000518 0.00172 0.000734 0.000686 Arsenic (total) - - 0.000786 0.000804 5.51E-04 1.81E-03 9.03E-04 0.000762 Barium (dissolved) - - 0.0589 0.0651 0.0378 0.192 0.0814 0.1 Barium (total) 0.0917 0.0614 0.0651 7.52E-02 4.25E-02 2.01E-01 9.11E-02 0.105 Boron (dissolved) - - 0.00792 0.0395 0.00446 0.0357 0.0703 0.01 Boron (total) 0.045 <0.02 0.00837 4.70E-02 4.75E-03 3.79E-02 0.0706 0.0101 Cadmium (dissolved) - - 0.0000145 0.0000091 <0.000006 0.000137 0.0000335 0.000014 Cadmium (total) - - 1.74E-05 1.22E-05 1.01E-05 0.00014 3.92E-05 0.0000141 Chloride <0.5 - 2 1 2 0.25 3 1 Chromium (dissolved) - - <0.0003 0.000311 <0.0003 <0.0003 0.000655 <0.0003 Chromium (total) <0.0008 0.0028 0.000798 0.000602 <0.0003 0.000631 0.00112 <0.0003 Cobalt (dissolved) - - 2.68E-04 0.0000242 <0.00001 0.000829 0.0000282 0.0000819 Cobalt (total) <0.0002 0.0004 0.000426 0.000123 0.000211 0.00119 0.000192 0.000159 Copper (dissolved) - - 0.000934 0.00129 0.000247 0.000617 0.000834 0.00188 Copper (total) 0.0011 0.0020 0.0014 0.00145 0.000325 0.00134 0.00134 0.0019 Iron (dissolved) - - 0.0838 0.0041 0.193 <0.004 0.0041 <0.004 Iron (total) 0.071 1.0700 0.423 0.406 0.358 0.245 0.484 0.13 Lead (dissolved) - - <0.000006 <0.000006 <0.000006 <0.000006 <0.000006 0.0000354 Lead (total) <0.0001 0.0006 0.000248 0.00028 0.000044 0.000271 0.00036 0.000112 Lithium (dissolved) - - 0.00156 0.00409 0.00273 0.00818 0.00823 0.00231 Lithium (total) - - 0.00156 0.00417 0.00277 0.00825 0.00827 0.00233 Mercury (dissolved) - - - - - - - - Mercury (ultra-trace) - - 2.2 <1.2 1.8 <1.2 1.7 2 Molybdenum (dissolved) - - 0.00206 0.00159 0.000833 0.0525 0.0122 0.00285 Molybdenum (total) 0.0335 <0.001 0.00206 0.00164 0.000836 0.0525 1.26E-02 0.00288 Nickel (dissolved) - - 0.00126 0.000242 0.000186 0.00672 0.000419 0.00107 Nickel (total) 0.0009 <0.0002 0.00173 0.000494 0.000288 7.97E-03 9.43E-04 0.00108 Nitrate - - - - - - - - Nitrite - - - - - - - - pH 8.7 7.2 8.1 8.4 8.1 8.3 8.5 8.5 Phenols - 0.004 <0.001 <0.001 0.001 <0.001 <0.001 0.008 Phosphorus (dissolved) - - 0.007 0.005 0.009 0.004 0.005 0.005 Phosphorus (total) - 0.03 0.025 0.019 0.018 0.013 0.016 0.013 Selenium (dissolved) - - 0.00192 <0.0003 0.000932 0.00359 0.00138 0.00443 Selenium (total) 0.0069 <0.0008 0.00194 0.000203 9.34E-04 3.67E-03 1.44E-03 0.00447 Silver (total) - - <0.000005 <0.000005 <0.000005 0.0000052 0.0000067 0.0000054 Silver (dissolved) - - 5.00E-06 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 Sulphate (SO4) 43.9 3.5 17.4 40.8 7.7 86.6 52.7 48.2 Sulphide (S) - - - - - - - - Thallium (dissolved) - - <0.0000003 0.000008 <0.0000003 <0.0000003 <0.0000003 0.0000057 Thallium (total) <0.0001 <0.0001 0.0000043 0.000011 <0.000003 0.0000204 0.0000167 0.0000066 Titanium (dissolved) - - 0.00408 0.0018 0.00228 0.000791 0.00146 0.000861 Titanium (total) <0.005 0.0300 0.0202 0.0103 0.00309 1.32E-02 0.0177 0.00631 Uranium (dissolved) - - 5.81E-04 9.84E-04 <0.000003 0.00488 0.00391 0.00199 Uranium (total) 0.0036 0.0002 0.000596 0.00106 <0.000003 0.00505 0.00401 0.00199 Zinc (total) 0.005 0.0100 0.0651 0.00198 0.0152 0.00269 0.00666 0.00106 Zinc (dissolved) - - 0.0521 0.00196 0.0119 0.00267 0.00136 0.00105





Erith Pond

Mercoal Pond

Mercoal Pond Pit 15 Pit 15 Erith

Pond Erith Pond

Mercoal Pond

June August June August June August May August 2008 2008 2008 2008 2008 2009 2009 2009

Aluminum (dissolved) 0.0202 0.0077 0.0153 0.0718 0.0264 0.00293 0.00377 0.159 Aluminum (total) 0.232 0.152 0.509 0.482 0.487 1.24 0.452 20.3 Ammonia-N <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 1.12 Arsenic (dissolved) 0.00048 0.00194 0.0006 0.00109 0.000613 0.000701 0.000486 0.00881 Arsenic (total) 0.000594 0.00211 0.000683 0.00115 0.000764 0.00113 0.000685 0.0118 Barium (dissolved) 0.0614 0.135 0.0588 0.0678 0.0974 0.113 0.102 0.294 Barium (total) 0.0665 0.144 0.0639 0.0781 0.104 0.146 0.111 2.15 Boron (dissolved) 0.00721 0.0105 0.0092 0.0751 0.0609 0.00936 0.0062 0.0366 Boron (total) 0.00797 0.0106 0.00994 0.0772 0.0615 0.0111 0.00626 0.037 Cadmium (dissolved) 0.0000066 0.0000159 0.0000102 0.000031 0.0000136 0.000015 2.33E-05 0.00027 Cadmium (total) 0.0000118 0.0000161 0.0000103 0.0000374 0.0000222 0.0000295 0.0000306 0.000407 Chloride 2 1 1 2 2 - 17.9 - Chromium (dissolved) <0.0003 <0.0003 <0.0003 0.000493 0.000319 <0.0003 0.000346 0.000395 Chromium (total) 0.000367 <0.0003 0.0006 0.000498 0.000556 0.00208 0.000914 0.0206 Cobalt (dissolved) 0.000134 0.000302 0.000184 0.0000696 0.000072 0.000147 0.000477 0.00233 Cobalt (total) 0.000182 0.0004 0.00028 0.000183 0.000186 0.000552 0.000669 0.00922 Copper (dissolved) 0.000985 0.00196 0.000637 0.00131 0.00101 0.000787 0.0013 0.0016 Copper (total) 0.000995 0.00198 0.000643 0.00132 0.00102 0.00186 0.00172 0.0231 Iron (dissolved) 0.033 0.157 0.0496 0.0268 0.0093 <0.004 0.0319 0.0819 Iron (total) 0.22 0.443 0.358 0.257 0.295 0.756 0.365 11.3 Lead (dissolved) <0.000006 0.000104 0.0000295 0.0000849 <0.000006 0.0000068 0.0000125 0.0000531 Lead (total) 0.0000929 0.000243 0.000156 0.000238 0.000198 0.000611 0.000245 0.0349 Lithium (dissolved) 0.00143 0.00389 0.00275 0.00889 0.00882 0.00263 0.0024 0.0105 Lithium (total) 0.0015 0.00393 0.00285 0.00898 0.00891 0.003 0.00242 0.0106 Mercury (dissolved) - - - - - - - - Mercury (ultra-trace) 2.5 <1.2 2.1 2.5 2 1.7 <1.2 18 Molybdenum (dissolved) 0.000969 0.00315 0.00222 0.0152 0.0077 0.00347 0.00261 0.0465 Molybdenum (total) 0.000969 0.00315 0.00223 0.0156 0.00778 0.00362 0.00264 0.047 Nickel (dissolved) <0.00006 0.00286 0.000818 0.000654 <0.00006 0.000521 0.00145 0.0011 Nickel (total) <0.00006 0.00289 0.00118 0.000886 <0.00006 0.00197 0.00209 0.0246 Nitrate - - - - - - - - Nitrite - - - - - - - - pH 8.1 8.3 8.1 8.6 8.5 - 7.92 - Phenols 0.003 0.006 0.003 0.001 <0.001 0.0026 0.0021 <0.001 Phosphorus (dissolved) 0.003 0.008 0.005 0.004 0.005 - 0.0014 0.0548 Phosphorus (total) 0.009 0.023 0.015 0.013 0.014 0.001 0.0104 0.406 Selenium (dissolved) 0.00293 <0.0003 0.000457 0.00331 0.00556 0.00511 0.00451 0.00624 Selenium (total) 0.00324 0.000267 0.000572 0.00334 0.00562 0.0055 0.00494 0.0063 Silver (total) <0.000005 0.0000083 <0.000005 0.000008 <0.000005 0.0000152 0.0000113 0.000288 Silver (dissolved) <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 0.0000095 Sulphate (SO4) 22.6 26.2 26.2 58.3 65.5 - 48 - Sulphide (S) - - - - - - - - Thallium (dissolved) 0.0000041 0.0000105 0.0000045 0.0000119 0.0000073 0.0000117 0.000011 0.0000185 Thallium (total) 0.0000065 0.0000117 0.0000087 0.0000119 0.0000106 0.0000239 0.0000161 0.000458 Titanium (dissolved) 0.00143 0.00113 0.00151 0.0018 0.00105 0.000787 0.000816 0.00425 Titanium (total) 0.00683 0.00438 0.0136 0.0108 0.0119 0.0869 0.0304 0.0391 Uranium (dissolved) 0.000381 0.00101 0.000627 0.00545 0.00501 0.000553 0.000894 0.00717 Uranium (total) 0.000403 0.00105 0.000676 0.00572 0.00537 0.000787 0.000965 0.0127 Zinc (total) 0.0541 0.102 0.0073 0.00351 0.00409 0.0035 0.00296 0.0539 Zinc (dissolved) 0.0459 0.0838 0.00651 0.00172 0.00202 0.000403 0.00141 0.00278 All values are expressed in mg/L.




Mercoal Pond Pit 15 Pit 15 Pit 16 Pit 16 Pit 16 Pit 17 Pit 17 Pit 18

May August May August May September August Sept August 2009 2009 2009 2009 2009 2009 2009 2009 2009

Aluminum (dissolved) 0.00408 0.00744 0.0111 0.0425 0.006 0.00146 <0.001 <0.001 <0.001 Aluminum (total) 0.175 0.0567 0.404 0.495 0.443 0.0419 <0.002 <0.002 <0.002 Ammonia-N 0.491 <0.05 <0.05 <0.05 <0.05 - <0.05 - <0.05 Arsenic (dissolved) 0.00167 0.000274 0.000643 0.000625 0.000499 0.000482 <0.00006 <0.00006 <0.00006 Arsenic (total) 0.00174 0.000304 0.00074 0.000709 0.000672 0.000543 <0.00006 <0.00006 <0.00006 Barium (dissolved) 0.104 0.0666 0.0932 0.0418 0.101 0.0991 <0.0001 <0.0001 <0.0001 Barium (total) 0.115 0.0719 0.0992 0.0498 0.11 0.107 <0.0001 <0.0001 <0.0001 Boron (dissolved) 0.0538 0.00419 0.0533 0.00724 0.00623 0.00859 <0.0008 <0.0008 <0.0008 Boron (total) 0.0543 0.00557 0.0538 0.00725 0.00629 0.0103 <0.0008 <0.0008 <0.0008 Cadmium (dissolved) 0.0000966 <0.000006 2.35E-05 <0.000006 2.35E-05 <0.000006 <0.000006 <0.000006 <0.000006 Cadmium (total) 0.0000993 0.0000066 0.0000309 0.0000102 0.0000297 <0.000006 <0.000006 <0.000006 <0.000006 Chloride 1.83 - 1.71 - 17.8 - - - - Chromium (dissolved) <0.0003 <0.0003 <0.0003 <0.0003 0.000398 <0.0003 <0.0003 <0.0003 <0.0003 Chromium (total) <0.0003 <0.0003 0.000403 0.000592 0.000877 <0.0003 <0.0003 <0.0003 <0.0003 Cobalt (dissolved) 0.000555 0.000021 0.0000571 0.0000222 0.000479 <0.00001 <0.00001 <0.00001 <0.00001 Cobalt (total) 0.000778 0.000037 0.000166 0.000181 0.000671 <0.00001 <0.00001 <0.00001 <0.00001 Copper (dissolved) 0.000715 0.000407 0.000753 0.000616 0.00145 0.000556 <0.0001 <0.0001 <0.0001 Copper (total) 0.000998 0.000411 0.001 0.000835 0.00173 0.000562 <0.0001 <0.0001 <0.0001 Iron (dissolved) <0.004 0.036 <0.004 0.139 0.0387 <0.004 <0.004 <0.004 <0.004 Iron (total) 0.0831 0.0857 0.247 0.506 0.38 0.0596 <0.004 <0.004 <0.004 Lead (dissolved) <0.000006 0.0000092 0.0000334 0.0000293 <0.000006 0.0000256 0.0000111 <0.000006 <0.000006 Lead (total) 0.0000765 0.000033 0.000157 0.000195 0.00025 0.0000259 0.0000112 <0.000006 0.0000096 Lithium (dissolved) 0.0263 0.0028 0.00676 0.00158 0.0015 0.00504 <0.0002 <0.0002 <0.0002 Lithium (total) 0.0279 0.00301 0.007 0.00199 0.00154 0.00508 <0.0002 <0.0002 <0.0002 Mercury (dissolved) - - - - - - - - - Mercury (ultra-trace) <1.2 <1.2 1.2 1.3 1.3 <1.2 <1.2 <1.2 <1.2 Molybdenum (dissolved) 0.0498 0.000722 0.0106 0.00043 0.00255 0.000846 <0.000008 <0.000008 <0.000008 Molybdenum (total) 0.051 0.000741 0.0107 0.000434 0.00258 0.000855 <0.000008 <0.000008 <0.000008 Nickel (dissolved) 0.00503 0.000091 0.000576 0.000482 0.00148 <0.00006 <0.00006 <0.00006 <0.00006 Nickel (total) 0.00578 0.000092 0.000794 0.000757 0.00219 <0.00006 0.0000626 <0.00006 <0.00006 Nitrate - - - - - - - - - Nitrite - - - - - - - - - pH 8.27 - 8.19 - 7.91 - - - - Phenols <0.001 0.0022 <0.001 0.003 0.0023 - <0.001 - <0.001 Phosphorus (dissolved) 0.0016 - 0.0058 - 0.0016 - - - - Phosphorus (total) 0.0049 <0.001 0.0179 0.0045 0.01 - <0.001 - <0.001 Selenium (dissolved) 0.0143 <0.0003 0.00254 <0.0003 0.00468 <0.0003 <0.0003 <0.0003 <0.0003 Selenium (total) 0.0144 0.000264 0.00257 <0.0002 0.00473 <0.0002 <0.0002 <0.0002 <0.0002 Silver (total) 0.0000055 0.0000236 0.0000056 0.0000098 0.0000085 <0.000005 <0.000005 <0.000005 <0.000005 Silver (dissolved) <0.000005 <0.000005 <0.000005 0.0000093 <0.000005 <0.000005 <0.000005 <0.000005 <0.000005 Sulphate (SO4) 194 - 58.7 - 48 - - - - Sulphide (S) - - - - - - - - - Thallium (dissolved) 0.0000112 0.0000032 0.0000059 0.0000015 0.0000113 0.0000031 <0.000003 <0.000003 <0.000003 Thallium (total) 0.0000135 0.0000033 0.0000087 0.0000072 0.0000174 0.0000039 <0.000003 <0.000003 <0.000003 Titanium (dissolved) 0.000618 0.00115 0.000709 0.0016 0.00077 0.000907 <0.00007 <0.00007 <0.00007 Titanium (total) 0.00425 0.00235 0.008 0.00877 0.0293 0.00151 <0.00007 0.000083 0.000121 Uranium (dissolved) 0.00805 0.000466 0.00383 0.0000794 0.000844 0.000622 <0.000003 <0.000003 <0.000003 Uranium (total) 0.00863 0.000498 0.00414 0.0000993 0.000948 0.000666 <0.000003 <0.000003 <0.000003 Zinc (total) 0.00175 <0.0002 0.0033 0.00114 0.00291 0.000283 <0.0002 <0.0002 <0.0002 Zinc (dissolved) 0.000682 <0.0002 0.00143 <0.0002 0.00124 0.00028 <0.0002 <0.0002 <0.0002


Surface Water Quality Report A3-9 Hatfield Robb Trend Extension Project

A3.6 ANALYSIS

A3.6.1 Simulation Procedure Surface water quality modeling was conducted using Monte Carlo methods. For each watershed, the model was used to generate new datasets of expected results based on empirical data collected from watercourses and impoundments in the LSA and RSA. The model was run 10,000 times to produce robust estimates of water quality results. Each run of the model produced a predicted dataset that estimated the water quality results that would be collected if sampling were to occur on that watershed once in the May to October period. For example, Embarras River has three planned impoundments, and these are estimated to be in use for 14 years. The model for the Embarras River created 10,000 datasets, and each water quality variable within the dataset had 14 values, each value representing one sampling year. In other words, the model created 10,000 potential outcomes of water quality based on how long the impoundment was expected to flow.

For the impact analysis, the surface water quality model was simulated as follows for each of the seven LSA and two RSA watercourses for the mean May to October flow:

Step 1: Impoundment flow was estimated using the empirical impoundment flow data in combination with the predicted impoundment flow probability for the May to October period (50%). The model used the impoundment flow probability to determine for each sampling year if there will be impoundment flow. If the probability (between 0 and 1) randomly chosen by the model was less than the empirical flow probability of 50%, the impoundment flow was set to zero. If it was greater than the flow probability, a random flow above zero was chosen from the empirical flow distribution in Figure A3.1. The model was used to generate 10,000 different datasets of impoundment flow based on this method.

Step 2: the model generated 10,000 different datasets of water quality concentrations for each watercourse, i.e. the Baseline Case. These represented 10,000 different simulated water quality sampling programs characterizing surface water quality upstream of the impoundments. If the watercourse in question is not downstream of existing mines, the Baseline Case water quality data for watercourses not downstream of existing mines (Section 3.3.1 of main report) was used. Conversely, if the watercourse in question is downstream of existing mines, the Baseline Case water quality data for watercourses downstream of existing mines (Section 3.3.2 of main report) was used. These concentrations, together with the watercourse flows, represented the predicted watercourse water quality upstream of impoundments.

Step 3: the model was used to generate 10,000 different datasets of water quality concentrations in the impoundment from empirical impoundment water quality data provided in Table A3.2. These


concentrations, together with the impoundment flows, represented the potential point source of impoundment flow to the watercourse.

Step 4: The surface water quality model was used to combine each of the 10,000 different datasets of the watercourse and impoundment flows and watercourse and impoundment water quality results with the number of planned impoundments. The resulting concentrations represented 10,000 datasets of simulated water quality characterizing watercourse water quality downstream of the impoundments, i.e., the Application Case.

Once the simulations were completed, a set of statistical tests were conducted to determine if there was any difference between surface water quality conditions predicted for downstream of the impoundments (Application Case) as compared to the surface water quality conditions upstream of the impoundments (Baseline Case). The statistical tests were targeted at examining two questions.

A3.6.1.1 Question 1: Will Mean Concentrations of Surface Water Quality Variables Increase as a Result of Project Impoundments and Will the Predicted Increases in Mean Concentration Be Detectable With An Effects Monitoring Program?

The first part of Question 1 was examined by conducting a t-test on each of the 10,000 simulations of each water quality variable to determine if there was a statistically-significant increase in mean concentration of surface water quality variables in the Application Case compared to the Baseline Case. This was as if there were 10,000 replicates of a water quality monitoring program upstream of impoundments and 10,000 replicates of a sampling program downstream of impoundments, and then testing if mean concentrations of surface water quality variables were greater downstream of impoundments as compared to upstream of impoundments. The second part of Question 1 was then calculated as the percentage of the 10,000 cases in which there was a statistically-significant increase in mean concentration of each water quality variable in the Application Case compared to the Baseline Case.

A3.6.1.2 Question 2: Will Concentrations of Surface Water Quality Variables Exceed Surface Water Quality Guidelines More Often as a Result of Project Impoundments and will these be Detectable with an Effects Monitoring Program?

The first part of Question 2 was examined by conducting a binomial test to determine if there was a statistically-significant increase in the number of guideline exceedances for each water quality variable in the Application Case versus the Baseline Case. This was as if there were 10,000 replicates of a water quality sampling program upstream of impoundments (Baseline Case) and 10,000 replicates of a sampling program downstream of impoundments (Application Case), and then testing if surface water quality guidelines were exceeded more often downstream of impoundments as compared to upstream of impoundments. Model predictions of the concentration of water quality variables downstream of impoundments were compared against the surface water quality guidelines contained in Table 4 of the main report.


The second part of Question 1 was then calculated as the percentage of the 10,000 cases in which there was a statistically-significant increase in the frequency of guideline exceedance of each water quality variable in the Application Case compared to the Baseline Case.

A3.7 ASSUMPTIONS

A number of assumptions were made in the model to accommodate the dataset and the available observations:

In many cases, the measured concentration of a water quality variable was below the detection limit. In these cases, a concentration equaling 50% of the detection limit was used. Those water quality variables which were measured using a detection limit above the current water quality guideline (generally mercury and silver for data collected prior to 2005) were removed from the model dataset;

Regional baseline datasets were created and used to characterize the Baseline Case conditions of individual watercourses because there were often insufficient data to characterize baseline surface water quality conditions of the individual watercourses;

Concentration of any given water quality variable was assumed to be independent of flow or of concentrations of other surface water quality variables;

Complete mixing of impoundment discharge and flows in natural watercourses was assumed; and

One model simulation was assumed to represent a single sample in the May to October period.

A3.8 RESULTS

Model results are presented below as follows: LSA (Table A3.3 to Table A3.11); and RSA (Table A3.10 to Table A3.11).

Table A3.3 Predicted changes in surface water quality, Bryan Creek at confluence with Embarras River.


Mean ± SD of % Baseline

Concentrations relative to Guideline

Mean ± SD of % Exposed


% Chance Exposed Concentrations

will be Higher than Baseline

Concentrations (% t-tests with

p -values < 0.05)

% Baseline Concentrations

Exceeding Guideline

% Exposed Concentrations

Exceeding Guideline

% Chance Exposed Concentrations will Exceed Guideline more often than

Baseline(% binomial tests with

p -values < 0.05)

Aluminum (dissolved) 35.88 ± 15.48 34.86 ± 14.84 <1 11 10 5Aluminum (total) 382.44 ± 235.54 405.54 ± 240.82 3 63 67 7Ammonia 2.4 ± 0 2.74 ± 0.94 2 <1 <1 <1Arsenic (dissolved) 10.25 ± 0.94 10.75 ± 1.61 1 <1 <1 <1Arsenic (total) 13.53 ± 1.79 14.08 ± 2.37 <1 <1 <1 <1Barium (dissolved) 1.21 ± 0.12 1.24 ± 0.13 <1 <1 <1 <1Barium (total) 1.38 ± 0.15 1.45 ± 0.26 <1 <1 <1 <1Boron (dissolved) 0.59 ± 0.04 0.68 ± 0.19 9 <1 <1 <1Boron (total) 0.69 ± 0.04 0.78 ± 0.2 11 <1 <1 <1Cadmium (dissolved) 14.05 ± 2.01 18.69 ± 10.9 14 <1 1 <1Cadmium (total) 32.88 ± 15.54 37.75 ± 19.07 8 6 7 <1Chloride 0.52 ± 0.19 0.56 ± 0.22 2 <1 <1 <1Chromium (dissolved) 20.16 ± 3.19 20.31 ± 3.06 2 <1 <1 <1Chromium (total) 53.99 ± 30.22 56.42 ± 30.2 2 8 8 1Cobalt (dissolved) 0.03 ± 0.01 0.05 ± 0.03 8 <1 <1 <1Cobalt (total) 0.15 ± 0.08 0.16 ± 0.09 6 <1 <1 <1Copper (dissolved) 28.13 ± 4.84 28.73 ± 4.83 <1 <1 <1 <1Copper (total) 43.53 ± 13.54 44.6 ± 13.47 <1 8 8 <1Iron (dissolved) 37.15 ± 7.86 35.48 ± 8.18 <1 7 5 16Iron (total) 161.91 ± 66.18 162.71 ± 64.35 <1 48 49 <1Lead (dissolved) 0.85 ± 0.19 0.83 ± 0.18 <1 <1 <1 <1Lead (total) 6.26 ± 4.37 7.59 ± 6.67 5 <1 <1 3Lithium (dissolved) 0.3 ± 0.04 0.32 ± 0.05 1 <1 <1 <1Lithium (total) 0.35 ± 0.04 0.36 ± 0.05 <1 <1 <1 <1Mercury (total) 35.42 ± 12.07 35.29 ± 11.52 <1 8 8 2Molybdenum (dissolved) 0.78 ± 0.09 1.52 ± 1.68 22 <1 <1 <1Molybdenum (total) 0.79 ± 0.09 1.71 ± 2.16 22 <1 <1 <1Nickel (dissolved) 0.33 ± 0.09 0.38 ± 0.14 4 <1 <1 <1Nickel (total) 0.7 ± 0.28 0.77 ± 0.33 3 <1 <1 <1Phenols 79.89 ± 10.56 77.47 ± 11.24 <1 20 19 3Phosphorous (dissolved) 11.29 ± 1.45 11.35 ± 1.5 <1 <1 <1 <1Phosphorous (total) 48.45 ± 18.43 47.89 ± 17.85 <1 11 12 <1Selenium (dissolved) 15.23 ± 0.43 30.82 ± 33.1 47 <1 6 11Selenium (total) 17.87 ± 3.25 32.62 ± 31.65 28 <1 5 10Silver (dissolved) 2.91 ± 0.31 2.92 ± 0.3 <1 <1 <1 <1Silver (total) 15.21 ± 6.2 15.01 ± 6 <1 <1 <1 1Sulphate (SO4) 7.85 ± 1.49 12.48 ± 9.73 25 <1 <1 <1Thallium (dissolved) 0.54 ± 0.18 0.55 ± 0.17 2 <1 <1 <1Thallium (total) 1.97 ± 0.78 2.06 ± 0.8 2 <1 <1 <1Titanium (dissolved) 1.92 ± 0.45 1.88 ± 0.44 <1 <1 <1 <1Titanium (total) 8.71 ± 5.3 8.91 ± 5.04 2 3 2 5Total Suspended Sediment 26.92 ± 6.71 29.69 ± 10.51 1 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.87 ± 1.84 50 <1 <1 <1Uranium (total) 2 ± 0.45 2.73 ± 1.66 10 <1 <1 <1Zinc (dissolved) 2.92 ± 0.86 4.54 ± 4.22 7 <1 <1 <1Zinc (total) 7.33 ± 3.63 9.13 ± 5.52 9 <1 <1 <1

Table A3.4 Predicted changes in surface water quality in Embarras River at confluence with Mitchell Creek.







will be Higher than Baseline Concentrations

(% t-tests with p -values < 0.05)


Exceeding Guideline


Exceeding Guideline


Baseline (% binomial tests

with p -values < 0.05)

Aluminum (dissolved) 27.25 ± 8.48 27.18 ± 8.4 <1 3 3 4Aluminum (total) 822 ± 320.15 821.1 ± 317.13 <1 86 86 1Ammonia 2.87 ± 0.71 2.92 ± 0.72 <1 <1 <1 <1Arsenic (dissolved) 9.28 ± 0.63 9.38 ± 0.69 <1 <1 <1 <1Arsenic (total) 13.97 ± 2.04 14.04 ± 2.05 <1 <1 <1 <1Barium (dissolved) 1.54 ± 0.1 1.55 ± 0.1 <1 <1 <1 <1Barium (total) 1.79 ± 0.14 1.8 ± 0.14 <1 <1 <1 <1Boron (dissolved) 1.03 ± 0.17 1.04 ± 0.17 <1 <1 <1 <1Boron (total) 0.97 ± 0.12 0.98 ± 0.13 <1 <1 <1 <1Cadmium (dissolved) 21.72 ± 2.87 22.35 ± 3.46 <1 <1 <1 <1Cadmium (total) 65.25 ± 25.77 65.7 ± 25.59 <1 11 11 <1Chloride 0.38 ± 0.06 0.39 ± 0.07 <1 <1 <1 <1Chromium (dissolved) 21.33 ± 3.15 21.35 ± 3.12 <1 <1 <1 <1Chromium (total) 103.55 ± 40.24 103.43 ± 39.88 <1 29 29 <1Cobalt (dissolved) 0.04 ± 0 0.04 ± 0.01 1 <1 <1 <1Cobalt (total) 0.29 ± 0.11 0.29 ± 0.11 <1 <1 <1 <1Copper (dissolved) 42.04 ± 5.99 41.99 ± 5.93 <1 <1 <1 <1Copper (total) 63.88 ± 16.64 63.85 ± 16.49 <1 15 15 <1Iron (dissolved) 15.18 ± 3.61 15.14 ± 3.58 <1 <1 <1 <1Iron (total) 248.79 ± 88.13 247.99 ± 87.38 <1 59 60 <1Lead (dissolved) 0.9 ± 0.19 0.9 ± 0.18 <1 <1 <1 <1Lead (total) 16.24 ± 6.99 16.33 ± 6.96 <1 2 2 <1Lithium (dissolved) 0.37 ± 0.05 0.37 ± 0.05 <1 <1 <1 <1Lithium (total) 0.42 ± 0.05 0.42 ± 0.05 <1 <1 <1 <1Mercury (total) 60.85 ± 26.25 60.58 ± 26 <1 15 15 <1Molybdenum (dissolved) 1.32 ± 0.33 1.44 ± 0.46 3 <1 <1 <1Molybdenum (total) 1.2 ± 0.26 1.34 ± 0.5 3 <1 <1 <1Nickel (dissolved) 0.35 ± 0.09 0.36 ± 0.09 <1 <1 <1 <1Nickel (total) 1.25 ± 0.43 1.26 ± 0.43 <1 <1 <1 <1Phenols 81.83 ± 40.39 81.43 ± 40.03 <1 13 13 <1Phosphorous (dissolved) 9.39 ± 1.58 9.42 ± 1.57 <1 <1 <1 <1Phosphorous (total) 118.98 ± 37.1 118.13 ± 36.76 <1 35 35 <1Selenium (dissolved) 26.91 ± 4.98 29.27 ± 8.1 5 <1 <1 <1Selenium (total) 33.39 ± 4.24 35.52 ± 7.18 3 <1 <1 <1Silver (dissolved) 2.58 ± 0.1 2.59 ± 0.1 <1 <1 <1 <1Silver (total) 60.24 ± 27.47 59.76 ± 27.25 <1 9 9 <1Sulphate (SO4) 13.04 ± 2.03 13.72 ± 2.71 4 <1 <1 <1Thallium (dissolved) 0.71 ± 0.12 0.71 ± 0.12 <1 <1 <1 <1Thallium (total) 4.38 ± 0.89 4.37 ± 0.88 <1 <1 <1 <1Titanium (dissolved) 2.13 ± 0.43 2.12 ± 0.42 <1 <1 <1 <1Titanium (total) 15.93 ± 5.13 15.89 ± 5.08 <1 <1 <1 <1Total Suspended Sediment 47.26 ± 6.49 47.31 ± 6.46 <1 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.15 ± 0.37 50 <1 <1 <1Uranium (total) 2.54 ± 0.84 2.65 ± 0.88 <1 <1 <1 <1Zinc (dissolved) 6.66 ± 1.67 6.87 ± 1.8 <1 <1 <1 <1Zinc (total) 17.08 ± 5.95 17.27 ± 5.93 <1 2 2 <1

Table A3.5 Predicted changes in surface water quality in Erith River immediately downstream of confluence with Bacon Creek.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 27.33 ± 7.78 26.95 ± 7.5 <1 3 2 10Aluminum (total) 823.52 ± 292.43 819.94 ± 285.93 <1 86 87 6Ammonia 2.87 ± 0.65 3.12 ± 0.96 2 <1 <1 <1Arsenic (dissolved) 9.3 ± 0.56 9.77 ± 1.33 3 <1 <1 <1Arsenic (total) 13.96 ± 1.84 14.37 ± 2.15 <1 <1 <1 <1Barium (dissolved) 1.55 ± 0.09 1.55 ± 0.09 <1 <1 <1 <1Barium (total) 1.8 ± 0.13 1.83 ± 0.2 <1 <1 <1 <1Boron (dissolved) 1.03 ± 0.15 1.07 ± 0.18 2 <1 <1 <1Boron (total) 0.97 ± 0.11 1.03 ± 0.17 5 <1 <1 <1Cadmium (dissolved) 21.67 ± 2.6 25.08 ± 8.75 6 <1 1 <1Cadmium (total) 65.3 ± 23.22 67.55 ± 23.39 <1 11 12 <1Chloride 0.38 ± 0.06 0.43 ± 0.13 4 <1 <1 <1Chromium (dissolved) 21.39 ± 2.88 21.46 ± 2.77 <1 <1 <1 <1Chromium (total) 103.34 ± 36.22 102.62 ± 35.19 <1 29 29 <1Cobalt (dissolved) 0.04 ± 0 0.05 ± 0.02 9 <1 <1 <1Cobalt (total) 0.29 ± 0.1 0.29 ± 0.1 <1 <1 <1 <1Copper (dissolved) 42.02 ± 5.43 41.78 ± 5.24 <1 <1 <1 <1Copper (total) 64.04 ± 15.23 63.84 ± 14.76 <1 16 15 1Iron (dissolved) 15.12 ± 3.23 14.96 ± 3.13 <1 <1 <1 <1Iron (total) 248.26 ± 79.51 243.94 ± 77.31 <1 59 61 <1Lead (dissolved) 0.9 ± 0.17 0.89 ± 0.17 <1 <1 <1 <1Lead (total) 16.29 ± 6.39 16.79 ± 7.08 <1 2 2 1Lithium (dissolved) 0.37 ± 0.05 0.37 ± 0.05 <1 <1 <1 <1Lithium (total) 0.42 ± 0.05 0.42 ± 0.05 <1 <1 <1 <1Mercury (total) 60.63 ± 24.08 59.16 ± 23.14 <1 15 15 <1Molybdenum (dissolved) 1.32 ± 0.3 1.9 ± 1.41 15 <1 <1 <1Molybdenum (total) 1.21 ± 0.24 1.96 ± 1.8 17 <1 <1 <1Nickel (dissolved) 0.35 ± 0.08 0.39 ± 0.12 4 <1 <1 <1Nickel (total) 1.25 ± 0.39 1.28 ± 0.39 <1 <1 <1 <1Phenols 81.58 ± 36.53 79.49 ± 35.07 <1 13 13 <1Phosphorous (dissolved) 9.41 ± 1.44 9.56 ± 1.48 <1 <1 <1 <1Phosphorous (total) 118.62 ± 33.37 114.36 ± 33.3 <1 35 35 <1Selenium (dissolved) 26.94 ± 4.52 39.3 ± 27.92 22 <1 6 11Selenium (total) 33.4 ± 3.87 44.88 ± 26.48 17 <1 5 11Silver (dissolved) 2.58 ± 0.09 2.61 ± 0.12 2 <1 <1 <1Silver (total) 60.19 ± 24.75 57.6 ± 24.27 <1 9 9 1Sulphate (SO4) 13.05 ± 1.83 16.62 ± 8.15 19 <1 <1 <1Thallium (dissolved) 0.71 ± 0.11 0.71 ± 0.1 <1 <1 <1 <1Thallium (total) 4.36 ± 0.82 4.31 ± 0.81 <1 <1 <1 <1Titanium (dissolved) 2.13 ± 0.39 2.08 ± 0.39 <1 <1 <1 <1Titanium (total) 15.94 ± 4.73 15.7 ± 4.54 <1 <1 <1 <1Total Suspended Sediment 47.29 ± 5.89 47.45 ± 6.71 <1 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.72 ± 1.6 51 <1 <1 <1Uranium (total) 2.55 ± 0.78 3.11 ± 1.51 9 <1 <1 <1Zinc (dissolved) 6.66 ± 1.53 7.77 ± 3.32 1 <1 <1 <1Zinc (total) 17.18 ± 5.32 18.14 ± 5.79 <1 2 2 2

Table A3.6 Predicted changes in surface water quality in Halpenny Creek at confluence with Erith River.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 27.18 ± 6.22 26.48 ± 5.95 <1 3 2 18Aluminum (total) 821.51 ± 234.03 814.16 ± 229.96 <1 86 88 11Ammonia 2.88 ± 0.53 3.36 ± 1.19 6 <1 <1 <1Arsenic (dissolved) 9.3 ± 0.47 10.17 ± 1.87 10 <1 <1 <1Arsenic (total) 13.95 ± 1.49 14.73 ± 2.31 2 <1 <1 <1Barium (dissolved) 1.54 ± 0.07 1.56 ± 0.08 <1 <1 <1 <1Barium (total) 1.79 ± 0.1 1.86 ± 0.24 <1 <1 <1 <1Boron (dissolved) 1.03 ± 0.12 1.11 ± 0.2 4 <1 <1 <1Boron (total) 0.98 ± 0.09 1.08 ± 0.23 13 <1 <1 <1Cadmium (dissolved) 21.65 ± 2.11 28.33 ± 13.68 18 <1 2 5Cadmium (total) 65.29 ± 18.79 69.7 ± 20.61 3 11 13 2Chloride 0.39 ± 0.05 0.46 ± 0.17 11 <1 <1 <1Chromium (dissolved) 21.43 ± 2.36 21.55 ± 2.22 <1 <1 <1 <1Chromium (total) 103.64 ± 30.6 102.17 ± 29.56 <1 29 28 2Cobalt (dissolved) 0.04 ± 0 0.06 ± 0.03 24 <1 <1 <1Cobalt (total) 0.28 ± 0.08 0.29 ± 0.08 <1 <1 <1 <1Copper (dissolved) 42.06 ± 4.44 41.56 ± 4.23 <1 <1 <1 <1Copper (total) 63.91 ± 12.49 63.44 ± 12.1 <1 15 15 4Iron (dissolved) 15.18 ± 2.61 14.86 ± 2.57 <1 <1 <1 <1Iron (total) 248.45 ± 64.06 240.55 ± 62.37 <1 60 62 2Lead (dissolved) 0.9 ± 0.13 0.87 ± 0.14 <1 <1 <1 <1Lead (total) 16.31 ± 5.24 17.29 ± 6.81 <1 2 3 3Lithium (dissolved) 0.37 ± 0.04 0.38 ± 0.05 1 <1 <1 <1Lithium (total) 0.42 ± 0.04 0.43 ± 0.05 <1 <1 <1 <1Mercury (total) 60.22 ± 19.12 57.54 ± 18.22 <1 15 14 2Molybdenum (dissolved) 1.32 ± 0.24 2.42 ± 2.17 32 <1 <1 <1Molybdenum (total) 1.21 ± 0.2 2.59 ± 2.69 34 <1 <1 <1Nickel (dissolved) 0.35 ± 0.07 0.42 ± 0.15 11 <1 <1 <1Nickel (total) 1.26 ± 0.32 1.3 ± 0.33 <1 <1 <1 <1Phenols 80.82 ± 29.5 77.08 ± 28.11 <1 12 13 <1Phosphorous (dissolved) 9.38 ± 1.14 9.67 ± 1.34 <1 <1 <1 <1Phosphorous (total) 118.84 ± 27.36 110.65 ± 29.46 <1 35 34 3Selenium (dissolved) 26.92 ± 3.66 50.28 ± 43.74 37 <1 10 22Selenium (total) 33.35 ± 3.08 54.62 ± 39.94 34 <1 9 23Silver (dissolved) 2.58 ± 0.07 2.63 ± 0.13 4 <1 <1 <1Silver (total) 59.95 ± 19.76 55.04 ± 20.14 <1 9 9 2Sulphate (SO4) 13.04 ± 1.47 19.7 ± 12.32 35 <1 <1 1Thallium (dissolved) 0.71 ± 0.09 0.71 ± 0.08 <1 <1 <1 <1Thallium (total) 4.37 ± 0.65 4.27 ± 0.68 <1 <1 <1 <1Titanium (dissolved) 2.14 ± 0.31 2.05 ± 0.33 <1 <1 <1 <1Titanium (total) 15.9 ± 3.77 15.49 ± 3.6 <1 <1 <1 <1Total Suspended Sediment 26.96 ± 4.87 31.19 ± 11.31 2 <1 1 <1Uranium (dissolved) 0.01 ± 0 1.35 ± 2.49 50 <1 <1 <1Uranium (total) 2.56 ± 0.63 3.64 ± 2.13 22 <1 <1 <1Zinc (dissolved) 6.68 ± 1.25 8.78 ± 4.64 5 <1 <1 1Zinc (total) 17.09 ± 4.35 18.93 ± 5.77 3 2 3 4

Table A3.7 Predicted changes in surface water quality in Hay Creek at confluence with Embarras River.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 35.74 ± 23.5 35.04 ± 22.66 <1 11 10 2Aluminum (total) 390.39 ± 369.16 406.51 ± 366.01 <1 63 66 5Ammonia 2.4 ± 0 2.63 ± 0.82 <1 <1 <1 <1Arsenic (dissolved) 10.24 ± 1.44 10.57 ± 1.82 <1 <1 <1 <1Arsenic (total) 13.63 ± 2.81 13.99 ± 3.09 <1 <1 <1 <1Barium (dissolved) 1.21 ± 0.18 1.23 ± 0.18 <1 <1 <1 <1Barium (total) 1.38 ± 0.23 1.43 ± 0.3 <1 <1 <1 <1Boron (dissolved) 0.59 ± 0.06 0.65 ± 0.15 2 <1 <1 <1Boron (total) 0.69 ± 0.07 0.75 ± 0.16 2 <1 <1 <1Cadmium (dissolved) 14.06 ± 3.08 17.4 ± 10.4 4 <1 <1 <1Cadmium (total) 33.02 ± 23.91 36.41 ± 25.32 2 6 7 <1Chloride 0.51 ± 0.29 0.54 ± 0.3 <1 <1 <1 <1Chromium (dissolved) 20.07 ± 4.81 20.19 ± 4.66 1 <1 <1 <1Chromium (total) 54.4 ± 46.65 55.86 ± 45.65 1 8 8 1Cobalt (dissolved) 0.03 ± 0.01 0.04 ± 0.02 2 <1 <1 <1Cobalt (total) 0.15 ± 0.12 0.16 ± 0.12 2 <1 <1 <1Copper (dissolved) 28.06 ± 7.43 28.46 ± 7.24 <1 <1 <1 <1Copper (total) 43.7 ± 20.79 44.43 ± 20.5 <1 8 8 <1Iron (dissolved) 37.06 ± 12.06 35.95 ± 11.88 <1 7 6 6Iron (total) 162.2 ± 102.36 162.8 ± 100.03 <1 48 48 <1Lead (dissolved) 0.85 ± 0.29 0.84 ± 0.28 <1 <1 <1 <1Lead (total) 6.21 ± 6.63 7.14 ± 8.25 <1 <1 <1 1Lithium (dissolved) 0.3 ± 0.06 0.31 ± 0.06 <1 <1 <1 <1Lithium (total) 0.35 ± 0.06 0.36 ± 0.06 <1 <1 <1 <1Mercury (total) 36.04 ± 18.84 35.95 ± 18.22 <1 8 8 <1Molybdenum (dissolved) 0.78 ± 0.14 1.29 ± 1.37 5 <1 <1 <1Molybdenum (total) 0.79 ± 0.13 1.41 ± 1.77 4 <1 <1 <1Nickel (dissolved) 0.33 ± 0.14 0.36 ± 0.16 <1 <1 <1 <1Nickel (total) 0.7 ± 0.42 0.75 ± 0.44 <1 <1 <1 <1Phenols 79.77 ± 16.1 78.14 ± 15.99 <1 19 19 3Phosphorous (dissolved) 11.28 ± 2.18 11.32 ± 2.2 <1 <1 <1 <1Phosphorous (total) 48.41 ± 28.07 47.99 ± 27.18 <1 11 11 <1Selenium (dissolved) 15.23 ± 0.66 25.73 ± 25.79 23 <1 4 4Selenium (total) 17.87 ± 5.01 27.9 ± 25.25 11 <1 4 3Silver (dissolved) 2.9 ± 0.47 2.91 ± 0.46 <1 <1 <1 <1Silver (total) 15.15 ± 9.62 15.01 ± 9.36 <1 <1 <1 <1Sulphate (SO4) 7.83 ± 2.29 10.92 ± 7.53 11 <1 <1 <1Thallium (dissolved) 0.54 ± 0.28 0.55 ± 0.27 <1 <1 <1 <1Thallium (total) 1.95 ± 1.17 2.01 ± 1.16 <1 <1 <1 <1Titanium (dissolved) 1.92 ± 0.68 1.89 ± 0.66 <1 <1 <1 <1Titanium (total) 8.6 ± 7.86 8.75 ± 7.59 <1 2 2 2Total Suspended Sediment 26.92 ± 10.09 28.92 ± 13.11 5 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.59 ± 1.42 44 <1 <1 <1Uranium (total) 2 ± 0.69 2.5 ± 1.46 2 <1 <1 <1Zinc (dissolved) 2.94 ± 1.33 3.98 ± 3.57 <1 <1 <1 <1Zinc (total) 7.32 ± 5.65 8.52 ± 6.56 2 <1 <1 <1

Table A3.8 Predicted changes in surface water quality in Lendrum Creek at confluence with Lund Creek.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 35.43 ± 13.95 35.16 ± 13.73 <1 11 10 <1Aluminum (total) 387.55 ± 218.11 394.13 ± 216.9 <1 63 65 2Ammonia 2.4 ± 0 2.5 ± 0.33 3 <1 <1 <1Arsenic (dissolved) 10.25 ± 0.86 10.39 ± 0.96 <1 <1 <1 <1Arsenic (total) 13.56 ± 1.64 13.71 ± 1.71 <1 <1 <1 <1Barium (dissolved) 1.21 ± 0.11 1.22 ± 0.11 <1 <1 <1 <1Barium (total) 1.38 ± 0.14 1.4 ± 0.15 <1 <1 <1 <1Boron (dissolved) 0.59 ± 0.04 0.62 ± 0.07 4 <1 <1 <1Boron (total) 0.69 ± 0.04 0.71 ± 0.08 4 <1 <1 <1Cadmium (dissolved) 14.03 ± 1.82 15.33 ± 4.16 5 <1 <1 <1Cadmium (total) 32.52 ± 13.89 33.94 ± 14.26 2 5 6 <1Chloride 0.52 ± 0.17 0.53 ± 0.17 <1 <1 <1 <1Chromium (dissolved) 20.15 ± 2.89 20.2 ± 2.85 1 <1 <1 <1Chromium (total) 54.32 ± 27.49 54.94 ± 27.21 <1 8 8 <1Cobalt (dissolved) 0.03 ± 0.01 0.04 ± 0.01 3 <1 <1 <1Cobalt (total) 0.15 ± 0.07 0.15 ± 0.07 1 <1 <1 <1Copper (dissolved) 28.18 ± 4.44 28.35 ± 4.39 <1 <1 <1 <1Copper (total) 43.49 ± 12.24 43.8 ± 12.13 <1 8 8 <1Iron (dissolved) 36.98 ± 7.15 36.52 ± 7.11 <1 7 6 7Iron (total) 161.89 ± 59.9 162.03 ± 58.92 <1 48 48 <1Lead (dissolved) 0.85 ± 0.17 0.85 ± 0.16 <1 <1 <1 <1Lead (total) 6.26 ± 3.99 6.61 ± 4.22 1 <1 <1 2Lithium (dissolved) 0.3 ± 0.03 0.31 ± 0.03 <1 <1 <1 <1Lithium (total) 0.35 ± 0.04 0.36 ± 0.04 <1 <1 <1 <1Mercury (total) 35.51 ± 11.12 35.49 ± 10.95 <1 8 8 <1Molybdenum (dissolved) 0.78 ± 0.08 0.99 ± 0.6 11 <1 <1 <1Molybdenum (total) 0.79 ± 0.08 1.04 ± 0.74 11 <1 <1 <1Nickel (dissolved) 0.33 ± 0.09 0.34 ± 0.09 <1 <1 <1 <1Nickel (total) 0.7 ± 0.26 0.72 ± 0.26 <1 <1 <1 <1Phenols 79.62 ± 9.62 78.97 ± 9.65 <1 19 20 <1Phosphorous (dissolved) 11.28 ± 1.33 11.3 ± 1.32 <1 <1 <1 <1Phosphorous (total) 48.33 ± 16.81 48.16 ± 16.58 <1 11 12 <1Selenium (dissolved) 15.23 ± 0.4 19.62 ± 11.91 43 <1 <1 1Selenium (total) 17.86 ± 2.99 21.94 ± 11.46 12 <1 <1 2Silver (dissolved) 2.91 ± 0.28 2.92 ± 0.28 <1 <1 <1 <1Silver (total) 15.2 ± 5.78 15.15 ± 5.69 <1 <1 <1 2Sulphate (SO4) 7.88 ± 1.35 9.15 ± 3.59 11 <1 <1 <1Thallium (dissolved) 0.54 ± 0.16 0.54 ± 0.16 <1 <1 <1 <1Thallium (total) 1.97 ± 0.71 1.99 ± 0.7 <1 <1 <1 <1Titanium (dissolved) 1.92 ± 0.41 1.91 ± 0.4 <1 <1 <1 <1Titanium (total) 8.78 ± 4.72 8.83 ± 4.65 <1 3 3 2Total Suspended Sediment 26.98 ± 6.1 27.75 ± 6.53 <1 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.25 ± 0.64 51 <1 <1 <1Uranium (total) 2 ± 0.41 2.2 ± 0.69 4 <1 <1 <1Zinc (dissolved) 2.92 ± 0.79 3.36 ± 1.53 3 <1 <1 <1Zinc (total) 7.31 ± 3.31 7.81 ± 3.59 2 <1 <1 <1

Table A3.9 Predicted changes in surface water quality in Lund Creek at confluence with Lendrum Creek.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 36.03 ± 14.81 35.7 ± 14.54 <1 11 11 <1Aluminum (total) 383.89 ± 231.43 391.69 ± 229.42 <1 63 65 3Ammonia 2.4 ± 0 2.51 ± 0.35 2 <1 <1 <1Arsenic (dissolved) 10.25 ± 0.91 10.41 ± 1.04 <1 <1 <1 <1Arsenic (total) 13.55 ± 1.74 13.71 ± 1.8 <1 <1 <1 <1Barium (dissolved) 1.21 ± 0.11 1.22 ± 0.11 <1 <1 <1 <1Barium (total) 1.38 ± 0.15 1.41 ± 0.17 <1 <1 <1 <1Boron (dissolved) 0.59 ± 0.04 0.62 ± 0.08 4 <1 <1 <1Boron (total) 0.68 ± 0.04 0.71 ± 0.09 5 <1 <1 <1Cadmium (dissolved) 14.05 ± 1.93 15.57 ± 4.63 6 <1 <1 <1Cadmium (total) 32.68 ± 15.02 34.28 ± 15.5 2 5 6 <1Chloride 0.52 ± 0.19 0.53 ± 0.19 <1 <1 <1 <1Chromium (dissolved) 20.18 ± 3.03 20.23 ± 2.98 2 <1 <1 <1Chromium (total) 54.43 ± 29.63 55.2 ± 29.32 <1 8 8 <1Cobalt (dissolved) 0.03 ± 0.01 0.04 ± 0.01 3 <1 <1 <1Cobalt (total) 0.15 ± 0.07 0.15 ± 0.07 1 <1 <1 <1Copper (dissolved) 28.16 ± 4.72 28.35 ± 4.67 <1 <1 <1 <1Copper (total) 43.29 ± 13 43.65 ± 12.84 <1 8 8 <1Iron (dissolved) 37.21 ± 7.61 36.67 ± 7.58 <1 7 6 8Iron (total) 162.53 ± 64.16 162.74 ± 63.18 <1 48 48 <1Lead (dissolved) 0.84 ± 0.18 0.84 ± 0.18 <1 <1 <1 <1Lead (total) 6.22 ± 4.22 6.64 ± 4.53 <1 <1 <1 2Lithium (dissolved) 0.3 ± 0.03 0.31 ± 0.04 <1 <1 <1 <1Lithium (total) 0.35 ± 0.04 0.36 ± 0.04 <1 <1 <1 <1Mercury (total) 35.77 ± 11.78 35.74 ± 11.57 <1 8 8 <1Molybdenum (dissolved) 0.78 ± 0.09 1.02 ± 0.66 11 <1 <1 <1Molybdenum (total) 0.79 ± 0.08 1.09 ± 0.84 12 <1 <1 <1Nickel (dissolved) 0.33 ± 0.09 0.35 ± 0.1 <1 <1 <1 <1Nickel (total) 0.7 ± 0.27 0.72 ± 0.27 <1 <1 <1 <1Phenols 79.72 ± 10.16 78.95 ± 10.14 <1 19 20 <1Phosphorous (dissolved) 11.3 ± 1.4 11.32 ± 1.39 <1 <1 <1 <1Phosphorous (total) 48.3 ± 17.6 48.16 ± 17.32 <1 11 11 <1Selenium (dissolved) 15.23 ± 0.43 20.37 ± 12.79 43 <1 1 2Selenium (total) 17.92 ± 3.21 22.69 ± 12.52 13 <1 1 2Silver (dissolved) 2.91 ± 0.29 2.91 ± 0.29 <1 <1 <1 <1Silver (total) 15.26 ± 6.15 15.2 ± 6.06 <1 <1 <1 2Sulphate (SO4) 7.84 ± 1.4 9.33 ± 3.96 12 <1 <1 <1Thallium (dissolved) 0.55 ± 0.18 0.55 ± 0.17 <1 <1 <1 <1Thallium (total) 1.98 ± 0.75 2.01 ± 0.74 <1 <1 <1 <1Titanium (dissolved) 1.92 ± 0.44 1.91 ± 0.43 <1 <1 <1 <1Titanium (total) 8.62 ± 5 8.68 ± 4.91 <1 3 2 2Total Suspended Sediment 26.85 ± 6.38 27.78 ± 6.92 <1 <1 <1 <1Uranium (dissolved) 0.01 ± 0 0.29 ± 0.71 49 <1 <1 <1Uranium (total) 2 ± 0.44 2.24 ± 0.73 4 <1 <1 <1Zinc (dissolved) 2.93 ± 0.82 3.45 ± 1.68 3 <1 <1 <1Zinc (total) 7.28 ± 3.51 7.87 ± 3.83 3 <1 <1 <1

Table A3.10 Predicted changes in surface water quality in Embarras River at confluence with Erith River.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 20.38 ± 6.43 20.38 ± 6.38 <1 2 2 <1Aluminum (total) 422.98 ± 133.57 426.31 ± 133.37 <1 69 70 1Ammonia 2.55 ± 0.19 2.6 ± 0.28 <1 <1 <1 <1Arsenic (dissolved) 9.55 ± 0.66 9.64 ± 0.72 <1 <1 <1 <1Arsenic (total) 12.46 ± 1.02 12.55 ± 1.09 <1 <1 <1 <1Barium (dissolved) 1.62 ± 0.12 1.62 ± 0.12 <1 <1 <1 <1Barium (total) 1.66 ± 0.11 1.67 ± 0.11 <1 <1 <1 <1Boron (dissolved) 0.85 ± 0.09 0.86 ± 0.1 <1 <1 <1 <1Boron (total) 0.89 ± 0.08 0.91 ± 0.09 2 <1 <1 <1Cadmium (dissolved) 12.08 ± 1.84 12.86 ± 3.01 5 <1 <1 <1Cadmium (total) 35.86 ± 7.57 36.63 ± 7.92 <1 7 7 <1Chloride 0.52 ± 0.12 0.52 ± 0.12 <1 <1 <1 <1Chromium (dissolved) 18.7 ± 2.84 18.75 ± 2.81 3 <1 <1 <1Chromium (total) 90.91 ± 35.67 90.93 ± 35.33 <1 27 28 <1Cobalt (dissolved) 0.02 ± 0 0.03 ± 0.01 2 <1 <1 <1Cobalt (total) 0.28 ± 0.05 0.28 ± 0.05 <1 <1 <1 <1Copper (dissolved) 35.27 ± 3.84 35.3 ± 3.81 <1 <1 <1 <1Copper (total) 41.74 ± 7.49 41.94 ± 7.47 <1 3 3 <1Iron (dissolved) 14.8 ± 3.76 14.77 ± 3.73 <1 <1 <1 <1Iron (total) 132.27 ± 32.56 132.63 ± 32.31 <1 49 49 <1Lead (dissolved) 0.93 ± 0.21 0.93 ± 0.21 <1 <1 <1 <1Lead (total) 24.28 ± 4.66 24.3 ± 4.67 <1 <1 <1 <1Lithium (dissolved) 0.36 ± 0.04 0.36 ± 0.04 <1 <1 <1 <1Lithium (total) 0.41 ± 0.04 0.41 ± 0.04 <1 <1 <1 <1Mercury (total) 30 ± 8.53 30.04 ± 8.45 <1 4 4 <1Molybdenum (dissolved) 1.21 ± 0.17 1.32 ± 0.4 4 <1 <1 <1Molybdenum (total) 1.26 ± 0.26 1.41 ± 0.5 3 <1 <1 <1Nickel (dissolved) 0.29 ± 0.08 0.3 ± 0.08 <1 <1 <1 <1Nickel (total) 1.21 ± 0.32 1.21 ± 0.32 <1 <1 <1 <1Phenols 33.5 ± 10.13 33.6 ± 10.03 <1 3 3 <1Phosphorous (dissolved) 5.61 ± 0.88 5.68 ± 0.9 <1 <1 <1 <1Phosphorous (total) 47.19 ± 17.53 47.11 ± 17.38 <1 18 17 <1Selenium (dissolved) 15.36 ± 0.54 17.9 ± 7.25 36 <1 <1 <1Selenium (total) 20.76 ± 3.46 23.12 ± 7.44 6 <1 <1 <1Silver (dissolved) 2.5 ± 0 2.51 ± 0.02 2 <1 <1 <1Silver (total) 4.95 ± 1.18 5.02 ± 1.21 <1 <1 <1 <1Sulphate (SO4) 16.09 ± 2.84 16.75 ± 3.36 3 <1 <1 <1Thallium (dissolved) 0.48 ± 0.08 0.49 ± 0.08 <1 <1 <1 <1Thallium (total) 2.41 ± 0.62 2.42 ± 0.62 <1 <1 <1 <1Titanium (dissolved) 1.49 ± 0.27 1.49 ± 0.27 <1 <1 <1 <1Titanium (total) 9.59 ± 3.27 9.62 ± 3.24 <1 <1 <1 <1Total Suspended Sediment 38.97 ± 6.83 39.19 ± 6.83 <1 <1 <1 <1Uranium (dissolved) 2.48 ± 0.26 2.6 ± 0.42 2 <1 <1 <1Uranium (total) 2.09 ± 0.36 2.21 ± 0.5 1 <1 <1 <1Zinc (dissolved) 4.23 ± 0.9 4.46 ± 1.16 <1 <1 <1 <1Zinc (total) 9.79 ± 2.9 10.05 ± 2.99 <1 <1 <1 <1

Table A3.11 Predicted changes in surface water quality in Erith River at confluence with Embarras River.










Exceeding Guideline


Exceeding Guideline




Aluminum (dissolved) 20.38 ± 4.82 20.37 ± 4.73 <1 2 2 3Aluminum (total) 422.34 ± 99.48 430.13 ± 102.91 <1 69 71 5Ammonia 2.54 ± 0.14 2.66 ± 0.36 4 <1 <1 <1Arsenic (dissolved) 9.54 ± 0.48 9.75 ± 0.75 1 <1 <1 <1Arsenic (total) 12.45 ± 0.75 12.67 ± 0.98 <1 <1 <1 <1Barium (dissolved) 1.62 ± 0.09 1.62 ± 0.08 <1 <1 <1 <1Barium (total) 1.66 ± 0.08 1.68 ± 0.11 <1 <1 <1 <1Boron (dissolved) 0.85 ± 0.07 0.88 ± 0.09 2 <1 <1 <1Boron (total) 0.9 ± 0.06 0.92 ± 0.09 6 <1 <1 <1Cadmium (dissolved) 12.07 ± 1.35 13.81 ± 4.69 13 <1 <1 <1Cadmium (total) 35.95 ± 5.69 37.68 ± 7.31 2 7 7 1Chloride 0.52 ± 0.09 0.53 ± 0.1 <1 <1 <1 <1Chromium (dissolved) 18.65 ± 2.05 18.75 ± 2.02 <1 <1 <1 <1Chromium (total) 90.58 ± 25.62 90.5 ± 25.17 <1 27 28 <1Cobalt (dissolved) 0.02 ± 0 0.03 ± 0.01 9 <1 <1 <1Cobalt (total) 0.28 ± 0.04 0.28 ± 0.04 <1 <1 <1 <1Copper (dissolved) 35.33 ± 2.84 35.38 ± 2.8 <1 <1 <1 <1Copper (total) 41.74 ± 5.59 42.19 ± 5.72 <1 3 3 2Iron (dissolved) 14.72 ± 2.72 14.65 ± 2.67 <1 <1 <1 <1Iron (total) 131.94 ± 23.89 132.91 ± 24.03 <1 49 50 <1Lead (dissolved) 0.93 ± 0.15 0.93 ± 0.15 <1 <1 <1 <1Lead (total) 24.29 ± 3.42 24.33 ± 3.62 <1 <1 <1 <1Lithium (dissolved) 0.36 ± 0.03 0.36 ± 0.03 <1 <1 <1 <1Lithium (total) 0.41 ± 0.03 0.41 ± 0.03 <1 <1 <1 <1Mercury (total) 30.12 ± 6.3 30.22 ± 6.18 <1 4 4 2Molybdenum (dissolved) 1.21 ± 0.12 1.46 ± 0.68 13 <1 <1 <1Molybdenum (total) 1.26 ± 0.19 1.58 ± 0.86 12 <1 <1 <1Nickel (dissolved) 0.3 ± 0.06 0.31 ± 0.07 4 <1 <1 <1Nickel (total) 1.21 ± 0.24 1.22 ± 0.24 <1 <1 <1 <1Phenols 33.38 ± 7.38 33.61 ± 7.25 <1 3 3 <1Phosphorous (dissolved) 5.6 ± 0.64 5.76 ± 0.77 1 <1 <1 <1Phosphorous (total) 47.4 ± 12.7 47.21 ± 12.49 <1 18 17 <1Selenium (dissolved) 15.35 ± 0.39 21.04 ± 14.22 42 <1 1 4Selenium (total) 20.78 ± 2.58 25.98 ± 13.14 16 <1 2 5Silver (dissolved) 2.5 ± 0 2.51 ± 0.04 11 <1 <1 <1Silver (total) 4.95 ± 0.85 5.13 ± 1.05 <1 <1 <1 <1Sulphate (SO4) 16.04 ± 2.06 17.52 ± 4.2 11 <1 <1 <1Thallium (dissolved) 0.49 ± 0.06 0.49 ± 0.06 <1 <1 <1 <1Thallium (total) 2.43 ± 0.46 2.45 ± 0.46 <1 <1 <1 <1Titanium (dissolved) 1.49 ± 0.2 1.49 ± 0.2 <1 <1 <1 <1Titanium (total) 9.64 ± 2.4 9.69 ± 2.35 <1 <1 <1 <1Total Suspended Sediment 38.96 ± 4.99 39.41 ± 5.24 <1 <1 <1 <1Uranium (dissolved) 2.48 ± 0.19 2.74 ± 0.67 10 <1 <1 <1Uranium (total) 2.09 ± 0.26 2.35 ± 0.71 8 <1 <1 <1Zinc (dissolved) 4.23 ± 0.66 4.78 ± 1.63 3 <1 <1 <1Zinc (total) 9.82 ± 2.18 10.41 ± 2.67 2 <1 <1 <1

Documents

Robb Trend Mine Project: Surface Water Quality Report€¦ · Effects on end-pit lakes on surface water quality Design and creation of end-pit lakes as part of reclamation and closure