2016 Annual Report Irondale Waste Disposal Site

Environmental Compliance Approval No. A330803

Cambium Reference No.: 4713-007

March 24, 2017

Prepared for: The Corporation of the Township of Minden Hills

Cambium Inc. P.O. Box 325 52 Hunter Street East, Peterborough , K9H 1G5 Telephone: (866) 217.7900 Facsimile: (705) 742.7907 cambium-inc.com

2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

EXECUTIVE SUMMARY Cambium Inc. was retained by the Corporation of the Township of Minden Hills to complete the 2016 annual monitoring program at the Irondale waste disposal site. The site is approved for the use and operation of an eight (8) hectare landfill within a total property area of 17.2 hectares for the disposal of domestic and wood waste generated in the Township of Minden Hills and the southwest portion of the geographic Township of Glamorgan (Municipality of Highlands East).

The shallow groundwater configuration indicated that the predominant groundwater flow direction is to the northwest to the down-gradient surface water systems. Leachate indicator parameters for the Site include: alkalinity, boron, calcium, chloride, hardness, magnesium, nitrate, potassium, sodium, sulphate, total dissolved solids, and manganese.

Minor groundwater quality impacts are present at the eastern and western property boundaries, as evidenced by the presence of leachate indicator parameters at monitoring wells 98-5, 98-6, 98-7 and 98-8 at concentrations greater than the natural background concentrations. Due to natural attenuation, the elevated concentrations observed at these monitors are less than those observed at the monitors directly down-gradient of the waste mound (i.e. OV3, 98-11, and 98-12).

There were some Reasonable Use Concept criteria exceedances observed along the east and west property boundaries in 2016; however, these were observed to be sporadic (total dissolved solids) or naturally elevated concentrations (manganese). In addition, as the down-gradient groundwater is interpret to discharge to surface water on-site, which is considered a reasonable use of the groundwater; the intent of the Reasonable Use Concept is considered to be met at all down-gradient property boundaries.

In 2016, the downstream surface water quality was comparable to background water quality. Additionally a Surface Water Trigger Mechanism was used to assess the potential for impact to the surface water systems on Site. Where Tier I of the trigger mechanism was observed to be activated in 2016, no impacts were observed to be related to the Site and Tier II monitoring was not initiated. Given the continued un-impacted nature of the downstream surface water locations, as well as the dry conditions observed intermittently during the summer sampling event, changes in the sampling program and sampling frequency are recommended. .

The volume of material placed in the landfill during the period between November 2015 and November 2016 was approximately 1,240 cubic metres. The remaining volume is approximately 27,180 cubic metres, however; due to the natural topography and surrounding environment, remaining site capacity is considerably less than the reported volume.

In 2016, 38.97 tonnes of blue box recyclables were diverted from the Irondale waste disposal site.

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2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

TABLE OF CONTENTS 1.0 INTRODUCTION ...... 1 1.1 SCOPE OF WORK ...... 1 1.2 SITE LOCATION ...... 1 1.3 SITE DESCRIPTION ...... 1

2.0 METHODOLOGY ...... 3 2.1 GROUNDWATER MONITORING PROGRAM ...... 3 2.2 SURFACE WATER MONITORING PROGRAM ...... 4 2.3 LANDFILL GAS MONITORING PROGRAM ...... 5 2.4 TOPOGRAPHIC SURVEY ...... 5 2.5 SITE INSPECTION AND OPERATIONS OVERVIEW ...... 5

3.0 GEOLOGICAL AND HYDROGEOLOGICAL CONTEXT ...... 7 3.1 TOPOGRAPHY AND DRAINAGE ...... 7 3.2 HYDROGEOLOGY ...... 8 3.2.1 Groundwater Flow Direction ...... 9 3.3 CONCEPTUAL MODEL ...... 9

4.0 RESULTS AND DISCUSSION ...... 10 4.1 GROUNDWATER QUALITY ...... 10 4.1.1 Background Water Quality ...... 11 4.1.2 Leachate Characteristics ...... 11 4.1.3 Down-gradient Groundwater Quality...... 12 4.1.4 Reasonable Use Concept ...... 14 4.1.5 Groundwater / Surface Water Interaction ...... 16 4.1.6 Summary ...... 16 4.2 SURFACE WATER QUALITY ...... 16 4.2.1 Background ...... 17 4.2.2 Downstream Surface Water Quality ...... 18 4.2.3 Surface Water Trigger Mechanism ...... 19 4.2.3.1 Compliance Assessment ...... 21 4.2.4 Summary ...... 22

5.0 SITE OPERATIONS ...... 23 5.1 SITE ACCESS AND SECURITY ...... 23 5.2 TRAINING ...... 23

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5.3 DRAINAGE ...... 24 5.4 ROADS ...... 24 5.5 AESTHETICS ...... 24 5.6 COMPLAINTS ...... 24 5.7 MONITORING WELL SECURITY ...... 24 5.8 MATERIALS SUMMARY ...... 25 5.8.1 Site Usage ...... 25 5.8.2 Site Diversion ...... 25 5.8.3 Waste Placement, Cell Development and Cover Material ...... 26 5.8.4 Cover Material ...... 27 5.9 REMAINING SITE CAPACITY ...... 27 5.10 COMPLIANCE WITH ENVIRONMENTAL COMPLIANCE APPROVAL ...... 28

6.0 CONCLUSIONS AND RECOMMENDATIONS ...... 29

REFERENCES

GLOSSARY OF TERMS

LIST OF EMBEDDED FIGURES Embedded Figure 1 Annual Landfill Volume ...... 27

LIST OF APPENDED FIGURES Figure 1 Regional Location Plan Figure 2 Property Plan and Surface Water Sample Locations Figure 3 Site Conditions Figure 4 Groundwater Configuration Figure 5 Groundwater Elevations Figure 6 Plume Configuration

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LIST OF EMBEDDED TABLES Embedded Table 1 Site Details ...... 2 Embedded Table 2 Surface Water Sampling Observations ...... 7 Embedded Table 3 Groundwater QA/QC Evaluation ...... 11 Embedded Table 4 Leachate Indicator Parameter ...... 12 Embedded Table 5 Surface Water QA/QC Evaluation ...... 17 Embedded Table 6 Summary of Diverted Materials ...... 25 Embedded Table 7 Capacity Calculations ...... 28

LIST OF APPENDED TABLES Table 1 Groundwater and Surface Water Monitoring Program Table 2 Groundwater Elevation Data Table 3 Summary of Groundwater Quality Table 4 Summary of Groundwater Quality - VOC Table 5 Summary of Surface Water Quality Table 6 Summary of Groundwater Quality (PWQO Comparison) Table 7 Surface Water Trigger Comparison

LIST OF APPENDICES Appendix A Environmental Compliance Approval No. A330803 Appendix B Correspondence Appendix C Field Sheets and Climate Data Appendix D Laboratory Certificates of Analysis Appendix E Historical Water Quality Data Appendix F Site Photographs Appendix G Borehole Logs

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1.0 INTRODUCTION

Cambium Inc. (Cambium) was retained by the Corporation of the Township of Minden Hills (Township) to complete the 2016 annual monitoring program at the Irondale waste disposal site (Site).

1.1 SCOPE OF WORK

The report is prepared in accordance with Condition 32 of Ministry of the Environment and Climate Change (MOECC) Environmental Compliance Approval (ECA) A330803 (Appendix A).

The scope of the work conducted for the 2016 monitoring program involved the following:

 groundwater elevation monitoring;

 groundwater and surface water sampling and analysis;

 topographic survey for capacity calculations;

 Site development and operations review; and,

 data interpretation, reporting, and status of site compliance.

This report presents the results of the 2016 work program and includes a summary of the operational activities at the Site. In addition to the above, the scope of the 2016 work plan included recommendations from the 2015 Annual Report (Cambium Inc., 2016), as well as addresses comments provided by Thomas Guo, Hydrogeologist, MOECC Eastern Region Technical Support Section, dated February 9, 2017 following his review of the 2015 Annual Report (Cambium Inc., 2016). The MOECC correspondence is included as Appendix B. Cambium has provided recommendations for the 2017 monitoring program based on the 2016 results and assessment and the requirements of the ECA.

1.2 SITE LOCATION

The Irondale waste disposal site is located at municipal address 2309 Milburn Road in the west half of Lot 24, Concession 6, in the geographic Township of Snowdon, in the amalgamated Township of Minden Hills, County of Haliburton (Figure 1) and is owned and operated by the Township. The Universal Transverse Mercator (UTM) coordinates of the front gate are Zone 17, 693146 4971617.

1.3 SITE DESCRIPTION

The Site is approved for the use and operation of a natural attenuation landfill and a materials transfer station (Figure 2), refer to Embedded Table 1 for Site details. The Site is approved for the disposal of domestic and wood waste generated in the Township of Minden Hills. Also accepted on-site is waste generated in the

Cambium Inc. Page 1 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017 southwest portion of the geographic Township of Glamorgan within the Municipality of Highlands East. The ECA was last amended on September 19, 2012 by the MOECC to include the acceptance of waste electrical and electronic equipment (WEEE).

Embedded Table 1 Site Details Total Site Area 17.2 hectares (ha) Approved Area of Refuse Placement 8.0 ha Total Site Capacity, not including Final Cover1 33,425 cubic metres (m³) Notes: 1. Condition (37) of the ECA states that a theoretical maximum capacity of 933,300 m³, however; condition (38) states a remaining capacity of 33,425 m³ as of September 2006.

To aid in the understanding of the Site history and development, the following report is included digitally in the report package:

 Site Development and Operations Report, 2000 Monitoring Report. (Robinson Consultants Inc., March 2001)

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2.0 METHODOLOGY

All field work was completed by Cambium field personnel. Groundwater and surface water samples were collected using standard field sampling protocol at the locations and frequency shown in Table 1. The work program completed in 2016 was to maintain compliance with the Site ECA and the MOECC. As such, the environmental monitoring work program was completed in accordance with the reports entitled Guidance Manual for Landfill Sites Receiving Municipal Waste (Ministry of Environment, 1993) and document entitled Monitoring and Reporting for Waste Disposal Sites, Groundwater and Surface Water, Technical Guidance Document (Ministry of the Environment, 2010).

Field tasks were completed following Cambium’s Standard Operating Procedures developed from recognized standard procedures such as those listed above and the MOECC document Guidance on Sampling and Analytical Methods for use at Contaminated Sites in Ontario (Ministry of the Environment, 1996). A health and safety program was developed for Site specific conditions and all Cambium personnel working on the project were familiarized and required to follow the identified protocol. All collected surface water and groundwater samples were stored in coolers with freezer packs and maintained less than 10°C during transport to the SGS Environmental Analytical Laboratory in Lakefield, Ontario (SGS). SGS is accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA), for specific environmental tests listed in the scope of accreditation approved by the CALA.

2.1 GROUNDWATER MONITORING PROGRAM

Cambium staff visited the Site on April 27 and October 11, 2016, to collect samples from the following monitoring wells outlined in the 2016 environmental monitoring program:

 98-5  98-6  98-7  98-8  98-9

 98-11  98-12  OV3  MW12-13

The following exceptions to the sampling program were noted in 2016:

 October: OV3 (damaged) and 98-9 (dry)

The following tasks were completed as part of the monitoring program:

 Prior to sampling, water levels were measured at each monitoring well using an electronic water level tape.

 Each groundwater monitoring well to be sampled was purged of approximately three (3) well bore volumes. Where wells were observed to go dry, only one (1) well volume was purged. The volume of groundwater to be purged was calculated on-site during each monitoring event using the measured water level and the well diameter. Purged water was disposed of on-site, down-gradient of each respective monitor.

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 Samples were collected using dedicated polyethylene tubing equipped with inertial-lift footvalves.

 Where required (i.e. groundwater for metals analysis), samples were field filtered.

 Field measurements were collected including: pH, conductivity, temperature, dissolved oxygen (DO), and oxygen reduction potential (ORP).

The monitoring well locations are shown on Figure 3. Groundwater elevation data is summarized in Table 2 and groundwater quality data is summarized in Table 3 and Table 4. A discussion of the water quality observed is included in Section 4.1.

The field data sheets completed during the 2016 monitoring program and weather data are included in Appendix C and laboratory Certificates of Analysis as received from the SGS laboratory are included as Appendix D. Historical groundwater quality data dates back to 1993 and is presented in Appendix E.

The following blind duplicate groundwater samples were collected as part of the Quality Assurance/Quality Control (QA/QC) program. In addition to these samples, the laboratory completes internal QA/QC. The results of the QA/QC program are presented in Section 4.1.

 April: MW12-13

 October: MW98-11

2.2 SURFACE WATER MONITORING PROGRAM

Cambium staff conducted Site visits to collect surface water samples from existing surface water monitoring stations at the Site on April 27, July 5, and October 11, 2016.

 SW1  SW2  SW3  SW4

The following exceptions to the sampling program were noted in 2016:

 Surface water locations SW2 and SW4 were observed to be dry during the July sampling event.

The following tasks were completed as part of the monitoring program:

 Surface water samples were collected by immersing the sample container into the water body.

 Where sample bottles were prefilled with preservatives, a clean bottle was used to collect and decant the water directly into the sample bottle.

 Field measurements were collected including: pH, conductivity, temperature, DO, and ORP.

 Where possible, the following measurements were collected at each surface water location: depth, width, and flow velocity measurements.

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The surface water sampling locations are shown on Figure 2. A discussion of the surface water quality is included in Section 4.2 and analytical results are included in Table 5.

The surface water field sheets are provided in Appendix C, laboratory Certificate of Analysis as received from the SGS laboratory are included as Appendix D, and photographs of each surface water sampling station are included as Appendix F. Historical surface water quality data dates back to 1993 and is presented in Appendix E.

The following blind duplicate surface water samples were collected as part of the QA/QC program. In addition to these samples, the laboratory completes internal QA/QC. As this represents 10 percent of the samples taken, this program is considered sufficient. The results of the QA/QC program are presented in Section 4.2.

 April: SW4

 July: SW1

 October: SW3

2.3 LANDFILL GAS MONITORING PROGRAM

Landfill gas is not actively managed at the Site. The large, open site area and isolated location from the public supports passive landfill gas management, which allows generated landfill gas to naturally disperse through the waste and naturally-permeable cover soil to the atmosphere.

2.4 TOPOGRAPHIC SURVEY

On November 24, 2016 Cambium staff conducted a topographic survey of the Site to determine the remaining capacity of the waste disposal site and estimate the remaining life of the Site. The topographic survey was completed using Top Con Total Station equipment and/or a Topcon Real Time Kinematic (RTK) enabled HiPer II system with an FC-25 field controller. The survey data were used to prepare updated plans of the site using AutoCAD software. The November 2016 Site survey was then compared with the November 2015 Site survey using Digital Terrain Modelling (DTM), to determine the change in volume of the waste mound. DTM is a computerized process that utilizes the prismoidal volumetric difference of two digital terrain models (topographical surveys). The results of the topographic survey are discussed in Section 5.8.

2.5 SITE INSPECTION AND OPERATIONS OVERVIEW

Site operations were observed during the visits conducted by Cambium staff in May, July and October 2016. During these visits the following items were inspected on accessed areas of the Site and observations noted in the field file:

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 litter control  Site development  waste placement

 waste compaction  cover material application  status of monitoring well security

 condition and layout of  condition and layout of access recycling bins roads, access gates

In February 2017, the Township provided additional Site maintenance information for the Site. The results of the Site inspections conducted are presented in Section 5.0.

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3.0 GEOLOGICAL AND HYDROGEOLOGICAL CONTEXT

3.1 TOPOGRAPHY AND DRAINAGE

The Site is located in the centre of the Burnt River watershed (a sub-watershed of the watershed), adjacent the eastern drainage divide (Trent Conservation Coalition Source Protection Region, 2012). The Site is located within the physiographic region known as the Georgian Bay Fringe (Chapman and Putnam, 1984). The Irondale River, Drag River, and Union Creek watersheds all drain into the Burnt River watershed. The Burnt River watershed discharges into Cameron Lake, located just south of . There are no provincially significant wetlands within 500 m of the Site.

Locally, the Site is situated in an area of rolling topography largely influenced by underlying bedrock. Bedrock outcrops are visible at surface near the Site and trend in an east-west orientation. On-site surface water drainage flows towards the north and west and is controlled by the underlying bedrock. An unnamed wetland is located immediately north of the Site and is drained by a small channel to flowing to the north. Surface water sampling stations SW2 and SW3 are stationed directly on the wetland drainage channel. Surface water sampling station SW1 is located east of the Site, up-gradient from surface water sampling stations SW2 and SW3. Surface water sampling station SW4 is located down-gradient of surface sampling stations SW2 and SW3 and monitors surface water flowing off-site, under Milburn Road. All of the surface water sampling locations are stationed on a watercourse that intercepts several uncategorized wetlands. The locations of the surface water sample stations are shown in Figure 2.

Discharge rates measured during the 2016 sampling events are summarized and surface water UTM coordinates are included in Embedded Table 2.

Embedded Table 2 Surface Water Sampling Observations Surface Water April 27 July 5 October 11 Easting Northing Monitoring Station Discharge (m³/s) Discharge (m³/s) Discharge (m³/s) SW1 693288 4971749 No observable flow No observable flow No measurable flow SW2 693209 4971746 0.066 Dry No measurable flow SW3 693172 4971918 No observable flow No observable flow No measurable flow SW4 692706 4971686 0.041 Dry No measurable flow

A review of the 2016 precipitation data (Environment , 2016) in comparison to the average precipitation for (1981 to 2010; (Government of Canada, 2015)) indicated average precipitation was generally consistent with the averages; however, the month to month varied significantly in some cases. March, August, and December were observed to receive significantly more precipitation than historically observed (i.e. greater than 175 %) and May, September, and November were observed to receive significantly less precipitation

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(i.e. less than 50 %). The remaining months were observed to be similar to historical results. The total precipitation received during and in the three (3) days before each sampling event is summarized herein:

 April: 4.0 mm

 July: 0.0 mm

 October: 1.6 mm

3.2 HYDROGEOLOGY

The stratigraphy of the site consists of Precambrian bedrock overlain by sandy glaciofluvial sediments. The underlying Precambrian bedrock is composed of granites and gneisses. Flow within the bedrock is assumed to be limited to fracture flow. The hydraulic conductivity of fractured flow in granitic type rock is typically low, around 10-8 to 10-11 centimetres per second (cm/s) (Freeze & Cherry, 1979). There is one (1) water well record identified within 500 m of the waste mound. This well is located approximately 200 m to the northwest of the Site, cross- gradient, and is installed in the deep bedrock aquifer, approximately 43 m below ground surface (mbs). Given the conceptual site model indicates leachate impacted waters will travel along the overburden/bedrock surface until discharging to surface north of the waste mound, impacts to this well are not expected. Refer to Appendix G. for a copy of the well record.

The overlying discontinuous glaciofluvial sand deposits have previously reported hydraulic conductivities ranging from 10-3 to 10-5 cm/s (Robinson Consultants Inc., March 2001). The significant difference in hydraulic conductivities between these two (2) geologic units effectively makes the granitic bedrock an impermeable barrier to groundwater flow. Bedrock is shallow on-site (generally found within 5 m of the surface) therefore groundwater flow in the overburden deposits is largely controlled by bedrock orientation. This is evidenced by the numerous wetlands and low-lying wet areas found in the region. Shallow groundwater in the overburden aquifer discharges to surface water systems down-gradient of the Site to the north of the waste mound.

Every monitoring well on-site has been installed in overburden sediments, the texture of which ranges from coarse sand to sand and some silt. The majority of monitoring wells were installed at auger refusal, which is the inferred bedrock contact. A hydrogeological cross section of the Site based on well log interpretations is provided with the borehole logs and water well details in Appendix G.

Groundwater monitors OV3, 98-11, and 98-12 are located directly down-gradient of the waste mound. Monitoring wells 98-5, 98-6, and 98-7 monitor groundwater quality along the eastern property boundary. Monitoring well 98-8 is located near the western property boundary, and monitoring well 98-9 is located up-gradient and south of the waste mound. Monitoring well MW12-13 was installed in October 2012 to replace monitor 98-10. It was noted in the 2015 Annual Report (Cambium Inc., 2016) that monitor OV2 was not sampled in October, and that the monitoring well may be buried or destroyed. Efforts were undertaken in 2016 to discern the location and status of

Cambium Inc. Page 8 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017 monitor OV2, but to no avail. Given that monitors 98-5 and 98-6 are located northeast and down-gradient it is not recommended that monitor OV2 be replaced.

3.2.1 GROUNDWATER FLOW DIRECTION

The groundwater elevation, the water table gradient, and the groundwater flow direction were determined by utilizing groundwater level data acquired by Site visits in 2016. The groundwater configuration is presented in Figure 4. The groundwater elevation data recorded from 2005 to 2016 are presented in Table 2 and are presented in Figure 5. Water levels have remained relatively stable since 2005.

The local water table at the Site is observed at depths ranging from ground surface at the northeast edge of the waste mound (98-8) to nearly 3.0 m below ground surface (bgs) at the south of the waste mound (MW12-13).

The water levels measured during the 2016 groundwater monitoring program indicated that the flow was to the northwest within the waste mound area of the Site, consistent with historical observations. The shallow groundwater flow within the waste mound was observed to flow to the northwest at an average gradient of 0.058 in April and 0.028 in October.

There are no multi-level monitoring wells on-site; therefore, vertical gradients could not be determined. Given the discontinuity in hydraulic conductivities between the overburden and bedrock aquifer, the downward vertical migration of leachate is expected to be minimal. As such, the primary pathway for leachate impacted groundwater is within the shallow overburden aquifer, migrating towards the north along the overburden/bedrock contact to the surface water systems down-gradient of the mound.

3.3 CONCEPTUAL MODEL

By reviewing past studies related to Site operations (Robinson Consultants Inc., March 2001), citing known characteristics of granite fracture flow (Freeze & Cherry, 1979), and monitoring groundwater elevations reported in the overburden aquifer, the following conceptual model of the Site has been created.

Groundwater percolates downward through glaciofluvial sediments and waste until it contacts shallow bedrock. Leachate impacted groundwater migrates laterally from the waste mound and discharges to surface waters in the nearby surface water system.

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4.0 RESULTS AND DISCUSSION

Water quality data generated from current and historical monitoring programs are analyzed to determine the existence, extent, and severity of impacts (if any) to groundwater and surface water environments derived from waste disposal activities. To ensure that appropriate procedures are in place to respond to any potential degradation beyond an acceptable limit in groundwater or surface water quality, Site specific trigger levels and contingency plans are required. Regular updates and comparisons of the Site specific triggers will aid in the assessment of any impacts from leachate contamination and to help prevent adverse impacts to the environments surrounding the waste disposal site.

This section presents the results of the 2016 monitoring program completed at the Site as compared to available historical data and discusses observed trends in the groundwater and surface water quality.

4.1 GROUNDWATER QUALITY

Groundwater quality data reported from on-site monitoring wells dating from 2005 to 2016 are presented in Table 3 and Table 4; historical groundwater quality is included in Appendix E, as originally included in the report entitled 2004 Annual Report, Irondale Waste Disposal Site (SGS Lakefield Research Limited, March 2005). The concentrations of select leachate indicator parameters, as was present in 2016, are shown on Figure 6.

The groundwater quality data for samples collected in 2016 have been compared historic results, background water quality data, and the MOECC Guideline B-7 Reasonable Use Concept (RUC) (Ministry of the Environment, April 1994). As the hydrogeological conceptual model for the Site indicates groundwater discharges to surface to the north, the water quality at the shallow monitors located in the low lying wet area (i.e. 98-11, OV3, 98-5) are compared to the Provincial Water Quality Objectives (PWQO; (Ministry of the Environment, July 1994)). Comparison to PWQO criteria aids in predicting any potential adverse impacts to the surface water down-gradient of the Site resulting from leachate impacted groundwater discharging to surface, and was recommended by the groundwater reviewer in comments dated February 9, 2017 (Appendix B). Refer to Table 6 for this assessment.

Duplicate samples were collected from monitoring wells MW12-13 in April and 98-11 in October as part of the QA/QC program. The duplicate samples showed excellent correlation with their corresponding sample; however, slight variances were noted in select parameters. Embedded Table 3 outlines the variances in the groundwater QA/QC program in 2016:

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Embedded Table 3 Groundwater QA/QC Evaluation Monitoring Well Sampling Event Parameter Relative Percent Difference (RPD) Phenols At least 67% greater Lead 169% lower MW12-13 April Molybdenum 37% lower Titanium 42% lower Total phosphorus At least 67% lower 98-11 October Lead 176% greater Zinc 40% greater Note: Concentrations are reported as compared to the original sample, i.e. lower than or higher than what was reported in the original sample.

The noted variances in the parameter concentrations between the duplicate sample and the original sample did not affect the interpretation of the groundwater quality at these locations or the overall observations regarding groundwater quality at the Site. The groundwater quality reported in 2016 can therefore be interpreted with confidence.

4.1.1 BACKGROUND WATER QUALITY

Background water quality is reported from monitoring well 98-9. Groundwater quality reported at this monitoring well has been assumed to be representative of background groundwater since it is located directly up-gradient of the waste mound. Groundwater quality reported at monitoring well 98-9 generally exhibits low concentrations of alkalinity, chloride, and total dissolved solids (TDS) with a consistently low or acidic pH. Concentrations of most metals have been observed to be low with the exception of aluminum, iron, and manganese. It is noted that parameter concentrations at this monitor fluctuate annually, which is likely due to the fluctuating water table reported at the Site. The water quality reported at this monitor in 2016 was generally consistent with historical results. During 2016 monitoring well 98-9 is considered representative of background conditions at the Site.

4.1.2 LEACHATE CHARACTERISTICS

A leachate well has not been constructed at the Irondale Site. Water quality reported from groundwater monitoring wells OV3 are considered representative of leachate quality at the Site since several commonly observed leachate indicator parameters (LIPs) are regularly reported at concentrations greater than those reported in the background water quality. In addition, monitoring well OV3 are located immediately down-gradient of the waste mound. Historic well OV2 was also used to determine the LIPs for the Site; however, has not been found since the spring of 2015 and is assumed destroyed. Leachate indicator parameters (LIPs) for the Site are summarized in Embedded Table 4.

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Embedded Table 4 Leachate Indicator Parameter alkalinity boron calcium chloride hardness magnesium manganese nitrate potassium sodium sulphate total dissolved solids (TDS)

It was noted previously that iron and manganese have been elevated at the background monitoring well in the past, likely due to the nature of the soils surrounding the Site. Many parameters (i.e. dissolved organic carbon (DOC), calcium, magnesium, manganese, iron, and an acidic pH) have been observed to naturally occur in wetland/peat environments and in areas exhibiting a water table (Bendell-Young, 2003). When reviewing down- gradient water quality, impact from landfill leachate will be delineated by examining those parameters not typically observed in background water quality and/or wetland environments. It is noted, analysis of biological oxygen demand (BOD) and total suspended solids (TSS) required to be completed at monitor OV2 as a leachate well, will not be completed at monitor OV3.

Monitoring well OV3 was noted as damaged in the spring of 2016, and in such a condition in the autumn that a sample was not able to be collected. Efforts should be taken in 2017 to repair this monitor; if the well cannot be repaired, it should be decommissioned and replaced.

Groundwater sampled from monitoring well OV3 and OV2 was submitted for analysis of volatile organic compounds (VOCs) during the April 2012 sampling event. Every parameter was reported less than the method detection limit (MDL) at monitoring well OV2 with the exception of chloro-benzene and 1,1-dichloro-ethane, which were both reported at relatively low concentrations. Every parameter was reported less than the MDL at monitoring well OV3 (Table 4). The next VOC analysis of these wells is scheduled for 2017.

4.1.3 DOWN-GRADIENT GROUNDWATER QUALITY

North of the Waste Area Monitoring wells 98-11 and 98-12 are located directly down-gradient the waste mound. Monitoring well 98-11 is located less than 10 m down-gradient and is centered north of the mound; monitoring well 98-12 is located to the northwest of the mound, immediately adjacent the active filling area.

Monitoring well 98-11 typically exhibits poorer groundwater quality than monitoring well 98-12, which is not unexpected given their respective locations. Groundwater sampled from monitoring well 98-11 routinely reports parameters at a concentration greater than background concentrations. Monitoring well 98-11 is considered to be moderately impacted by landfill leachate. Most parameter concentrations in 2016 were observed within historical concentrations.

Groundwater sampled from monitoring well 98-11 was submitted for analysis of VOCs during the April 2012 sampling event. Every parameter was reported less than the MDL. The next scheduled VOC analysis for this location is 2017.

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Groundwater quality reported from monitoring well 98-12 generally exhibits several parameters at concentrations greater than background water quality. Concentrations of most parameters were reported within historically observed ranges during the 2016 monitoring program. Concentrations of boron have continued to increase steadily over time, despite the concentrations reported for April and October as less than those reported in the previous monitoring year, which was noted as the highest yet recorded. Some parameters exhibit fluctuating and variable concentration profiles at this location, but all are within the historic range. The remainder are either stable or decreasing at this location.

East of Waste Area Groundwater monitoring wells 98-5, 98-6, and 98-7 are located 25 metres northeast and east of the waste mound at the eastern property boundary. These wells generally report LIPs at concentrations greater than background. These locations are interpreted to be slightly impacted by landfill leachate, however, trends of decreasing concentration have been noted at these monitoring wells since the fill beyond approved limits was relocated in 2007 and 2008 (Cambium Environmental Inc., March 2010).

Groundwater sampled from monitoring well 98-6 is to be submitted for analysis of VOCs in 2017. The previous sampling event was during April 2012 where all parameter concentrations were observed to be less than the MDL.

West of Waste Area Groundwater monitoring well 98-8 is located approximately 45 m down-gradient and northwest of monitoring well 98-12, in close proximity to the western property boundary. Groundwater sampled from monitoring well 98-8 is generally of better quality than water sampled from monitoring well 98-12, with the exception of those parameters associated with wetland and peat environments (i.e. iron, manganese, and an acidic pH). It is noted, this monitor is installed only 1.5 mbgs and the attached borehole log indicates that the overburden observed at this location was entirely peat and mulch (Appendix G). In 2016, the water quality at this location was observed to be consistent with historical results.

The MOECC groundwater reviewer in correspondence dated February 9, 2017 recommended that a study on the highly elevated iron and manganese concentrations at this location be completed (Appendix B). Given that iron and manganese concentrations are observed to be decreasing or stable, this well is generally observed to have low concentrations of all other LIPs, and iron and manganese are well documented to be elevated in wetland type environments such as those observed at monitor 98-8 (Bendell-Young, 2003), Cambium does not believe additional study is warranted at this time. Should concentrations be observed to increase and/or if additional LIP concentrations are observed to increase, a study should be completed.

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Cross-gradient of Waste Area Monitoring well MW12-13 is located approximately 20 m south of former monitoring well 98-10. Groundwater quality reported from monitoring well MW12-13 typically reports LIP concentrations, as well as several other parameters at concentrations greater than those reported from 98-10 historically and currently at monitoring well 98-9. Groundwater quality reported up-gradient and down-gradient of monitoring well MW12-13 is of better quality; therefore, the poor water quality reported at this location may be naturally occurring or derived from an off- site source. Given the close proximity to a roadway, elevated concentrations of sodium and chloride are indicative of road salting operations. Additionally, elevated metals and base cation concentrations may be related to salt use on the adjacent road. Salt influences the chemistry of the soil in which it infiltrates and can release metals (e.g., aluminum, zinc, copper, cobalt, mercury, cadmium) and base cations (calcium, magnesium, potassium) (Health Canada, 2001). Regardless of the source, the concentrations observed are generally observed to meet compliance criteria, as discussed in Section 4.1.4 and are not interpreted to be a potential adverse impact to off-site receptors.

4.1.4 REASONABLE USE CONCEPT

Where groundwater is observed to discharge to surface, this is considered a reasonable use of the groundwater; therefore, MOECC Guideline B-7, Reasonable Use Concept (RUC) (Ministry of the Environment, April 1994) is considered to be met if groundwater discharges to surface on-site. Previously, it was interpreted that Guideline B- 7 was there met at the Site given that groundwater was interpreted to be discharged to surface north and down- gradient of the waste mound. Recent correspondence from the MOECC indicated that this is not the case for the eastern and western property boundaries. As such, a RUC assessment is completed herein at monitors 98-5, 98- 6, and 98-7 to assess compliance on the east boundary and at monitor 98-8 to assess compliance along the west boundary of the Site.

The MOECC Reasonable Use Policy states that, in accordance with the appropriate criteria for particular uses, a change in quality of the groundwater on an adjacent property will be accepted only as follows:

The quality cannot be degraded by an amount in excess of 50% of the difference between background and the Ontario Drinking Water Standards (ODWQS) for non-health related parameters and in excess of 25% of the difference between background and the Ontario Drinking Water Standards for health related parameters. Background is considered to be the quality of the groundwater prior to any man made contamination.

MOECC Procedure B-7-1.

The maximum concentration of a particular contaminant that is considered acceptable in the groundwater beneath an adjacent property is calculated in accordance with the following relationship:

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Cm = Cb + x (Cr - Cb)

Where: Cm = maximum concentration accepted

Cb = background concentration

Cr = Maximum concentration permitted in accordance with the Ontario Drinking Water Standards x = a constant that reduces the contamination to a level that is considered by the MOECC to have a negligible effect on water use. i.e. 0.5 for non-health related parameters 0.25 for health related parameters.

In 2016, the RUC values were calculated using the median value of the background concentration (Cb) from a minimum of the previous five (5) sampling events, as required by MOECC Eastern Region Technical Support

Section. The maximum allowable concentration (Cm) of any particular parameter may be calculated using the background concentration of that parameter from a monitor up-gradient of the Site, the designated ODWQS for that parameter, and a constant that reflects whether the parameter is health or aesthetic-related as defined by the ODWQS. Where background concentrations were less than the laboratory method detection limit, the method detection limit was used as the background concentration. The calculated Cm for the Site was set as the RUC.

Where the background concentration exceeded ODWQS, the Cb was set as the RUC value.

In 2016, the RUC concentrations were calculated for the Site using background water quality from monitoring well 98-9 (Figure 3). The RUC values were calculated for all of the LIPs for the Site, as defined in Embedded Table 4.

In 2016, the RUC assessment included monitoring wells 98-5, 98-6, and 98-7 to assess compliance on the east boundary and at monitor 98-8 to assess compliance for the western property boundary. Given its proximity to the property boundary, albeit cross-gradient of the waste mound, monitor MW12-13 was also considered in this assessment. The analytical results of the water quality data indicated that the RUC concentrations have been met with the exception of the following parameters in 2016:

 98-6: TDS and manganese in October only

 98-8: manganese in April and October

 MW12-13: manganese in April and October

The elevated concentrations of manganese observed at the down-gradient wells were observed to within concentration ranges observed in the background water quality at monitor 98-9 and are considered to be naturally occurring in the area. The elevated concentrations for TDS at monitor 98-6 are sporadic and not observed to persistently exceed the RUC criteria. As such, the intent of the Reasonable Use Concept is interpreted to be met along the east and west property boundaries. Further, the Reasonable Use Concept is met along the north boundary give that groundwater discharges to surface north of the waste mound; therefore, the Site is interpreted to be in compliance with Guideline B-7.

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4.1.5 GROUNDWATER / SURFACE WATER INTERACTION

Since the 2012 monitoring program, monitoring wells located on the edge of the wetland have been compared against PWQO criteria because the groundwater sampled by these wells is discharged to nearby surface water systems (Cambium Environmental Inc., 2013). As recommended by the MOECC, current and historical groundwater quality data reported from monitoring wells 98-5, 98-11, OV2, and OV3 were compared to PWQO criteria, the results of which are presented in Table 6. Note that OV2 was not able to be found in 2016 and well OV3 was observed to be damaged in October and could not be sampled. Although it is not recommended that monitor OV2 be replaced, as discussed in Section 3.2, it is recommended that monitor OV3 be repaired in 2017 such that leachate concentrations can continue to be monitored at the Site.

Several LIP concentrations exceeded the PWQO criteria at monitoring wells 98-5, 98-11, and OV3 in 2016. Those wells located closest to the waste mound (monitoring well 98-11 and OV3) exhibited notably poorer groundwater quality than monitoring well 98-5. Monitoring well 98-5 is located the farthest down-gradient out of the three (3) wells, indicating that natural attenuation is occurring on-site. It is therefore anticipated that leachate impacted groundwater will reach an acceptable level of attenuation before discharging to the surface water systems located north and northeast of the Site. Additionally, the down-gradient surface water sampling stations reported exceedances of parameters dissimilar to those associated with landfill leachate, indicating that landfill leachate is not significantly impacting down-gradient surface water systems. Refer to Section 4.2 for this assessment.

4.1.6 SUMMARY

Overall, groundwater sampled from those monitoring wells directly down-gradient of the waste mound was reported as being slightly to moderately impacted by landfill leachate, depending on the location. Due to the natural attenuation observed between the furthest down-gradient wells and those wells located adjacent the waste mound, the leachate plume is not expected to extend much beyond the current monitoring well network. Several of the LIP concentrations have developed trends of decreasing/stable concentrations at those wells impacted by landfill leachate.

4.2 SURFACE WATER QUALITY

All surface water samples were submitted for the parameters listed in Table 1 and the water quality data from 2005 to 2016 are summarized in Table 5. Historical surface water quality is included as Appendix E, as originally included in the report entitled 2004 Annual Report, Irondale Waste Disposal Site (SGS Lakefield Research Limited, March 2005).

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In order to assess the potential impact of the Site on the local surface water regime, water quality data for the upstream and downstream surface water monitoring stations were compared. This assessment assists in determining the magnitude of any landfill impact(s) on local surface water quality.

The 2016 surface water quality results for each monitoring location were compared with historical data from each sampling location, background surface water quality, the PWQO (Ministry of the Environment, July 1994), the CCME CWQG for PAL (Canadian Council of Ministers of the Environment, 2014), the British Columbia Water Quality Guidelines (British Columbia Ministry of the Environment, 2016), and the parameters identified in the surface water trigger mechanism (Section 4.2.3).

Duplicate samples were collected at surface water sampling stations SW4 in April, SW1 in July, and SW3 in October. Results from the duplicate analyses indicate good correlation with the original sample; however, some variances between the samples as noted in Embedded Table 5.

Embedded Table 5 Surface Water QA/QC Evaluation

Sampling Location Sampling Event Parameter Relative Percent Difference

Chemical Oxygen Demand (COD) 100% greater SW4 April phenols 120% greater cadmium 35% greater TDS 33% greater SW1 July Total Kjeldahl Nitrogen (TKN) 33% greater boron 50% lesser cadmium 72% greater SW3 October total phosphorus 56% greater selenium 33% greater Note: Concentrations are reported as compared to the original sample, i.e. lesser than or greater than what was reported in the original sample.

The noted variances in the parameter concentrations between the duplicate sample and the original sample did not affect the interpretation of the surface water quality at these locations or the overall observations regarding groundwater quality at the Site. In many cases the RPD high RPD observed was due to the low concentration of the parameters observed and did not ultimately represent a significant difference. The surface water quality reported in 2016 can therefore be interpreted with confidence.

4.2.1 BACKGROUND

Surface water monitoring station SW1 is located upstream of the waste disposal area and is considered representative of background surface water quality on-site. Surface water sampled at station SW1 is characterized by fluctuating concentrations of most parameters, several of which regularly exceed PWQO criteria,

Cambium Inc. Page 17 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017 including the following: pH, phenols, aluminum, copper, iron, lead, phosphorous, silver, and dissolved oxygen (DO).

In 2016, the following parameter concentrations did not meet the PWQO criteria:

 April: field pH (low), and iron

 July: field pH (low), aluminum, iron, total phosphorus

 October: phenols, aluminum, and iron

All parameter concentrations were reported within historical ranges at this location in 2016.

4.2.2 DOWNSTREAM SURFACE WATER QUALITY

Surface water monitoring station SW2 is located approximately 50 m north of the waste mound on a drainage channel within the wet area interpreted to be the primary receiver of leachate impacted groundwater. In the past, it has been anticipated that this surface water sampling location would report impact from landfill leachate; however, no significant impact from landfill leachate has yet been reported.

The water quality reported at surface water station SW2 is generally of similar to or, in some instances, better quality than background water quality. The PWQO exceedances at surface water station SW2 in 2016 were similar to those reported in background water quality and included the following:

 April: phenols, aluminum, and iron

 October: phenols, aluminum, and iron

In 2016, the concentrations of most parameters were reported within historically observed ranges. Where concentrations were observed to be slightly elevated in 2016, this was attributed to climatological impact; continued monitoring in 2017 will confirm.

Surface water monitoring station SW3 is located east of the eastern property boundary, approximately 180 m north of the waste disposal area. The surface water quality reported at surface water station SW3 has been similar to the surface water quality reported at station SW2 and the background water quality. This is evidenced by similar PWQO exceedances and similar fluctuations in parameter concentration. In 2016, PWQO exceedances included the following:

 April: aluminum, and iron

 July: pH (lab, low), aluminum, iron, and total phosphorus

 October: pH (lab, low), phenols, aluminum, iron, and total phosphorus

The concentration of all parameters and PWQO exceedances were reported within historical ranges.

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Surface water station SW4 is the farthest downstream surface water sampling station from the waste mound and the background surface water station. Surface water quality reported at this surface water station is generally of similar quality to background water quality, including regular PWQO exceedances and fluctuations in parameter concentration. In 2016, the following parameters did not meet the PWQO criteria: -

 April: aluminum, and iron

 October: phenols, aluminum, iron, and total phosphorus

The concentrations of all parameters were reported within historical ranges. Parameters exceeding the PWQO criteria report similar concentrations to background, and other upstream monitoring stations.

In correspondence dated October 15, 2014, the MOECC reviewer noted that lead reported in surface water should be compared against the CCME CWQG for lead instead of the PWQO (Cambium Inc., 2016). The CWQG states that the guideline for lead is dependent on the hardness of the surface water. When hardness is present at less than 60 mg/L, the corresponding guideline for lead is 0.001 mg/L (Canadian Council of Ministers of the Environment, 2014). The PWQO guideline for lead is also dependant on hardness. When hardness is present at concentrations less than 30 mg/L the guideline for lead is 0.001 mg/L. In 2016, the concentration of hardness was reported to be less than 30 mg/L at every surface water station during each sampling event (this has been the trend historically as well); therefore, the current PWQO guideline used by Cambium is valid.

Further, the parameters chloride and nitrate were compared against the CCME CWQG (Canadian Council of Ministers of the Environment, 2014) as no PWQO criteria exist for these parameters. Sulphate was compared against the BC WQG (British Columbia Ministry of the Environment, 2016), as this parameter is also not represented in the PWQO. All parameter concentrations reported at all surface water monitoring stations reported concentrations well below the applicable criteria. Surface water quality will continue to be compared to these guidelines and criteria, as these parameters at elevated concentrations can pose a health risk to aquatic life (Canadian Council of Ministers of the Environment, 2014). Additionally, Cambium will continue to compare lead concentrations in the surface water to a criterion of 0.001 mg/L, provided that the hardness remains below 30 mg/L.

4.2.3 SURFACE WATER TRIGGER MECHANISM

A surface water trigger mechanism for the Site is detailed in the report entitled Site Development and Operations, 2000 Monitoring Report (Robinson Consultants Inc., March 2001). The surface water trigger mechanism is a prescribed process that alerts landfill operators to impacts from landfill leachate and the appropriate responses to the findings. The objective of the surface water trigger mechanism is to confirm that the surface water quality downstream of the Site is suitable for beneficial uses and determine the degree to which the landfill and Site

Cambium Inc. Page 19 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017 operations are affecting the quality of surface waters at some defined point. Surface water use downstream of the Irondale waste disposal site is assumed to be primarily for aquatic habitat.

The surface water trigger mechanism requires the review of the potential impact to the surface water regime on an annual basis. The list of recommended trigger parameters was expanded in 2007 to include the leachate indicator parameters alkalinity, boron, chloride, hardness, nitrate, sodium, sulphate, TDS, and un-ionized ammonia (Cambium Environmental Inc., March 2008). The trigger parameter concentrations are defined for the Site as 75 percent of the RUC values (Ministry of the Environment, July 1994) calculated for background groundwater water quality. For those parameters regulated under the PWQO, the PWQO criteria are used as the trigger value concentrations. Lastly, aside from the designated trigger parameters, any parameters which are observed to exceed the PWQO with the exception of selected metals (i.e. cobalt, strontium, silver, iron, aluminum, and manganese) are also required to be assessed.

The water quality at surface water monitoring stations SW2 and SW3 are the primary trigger locations given their close proximity to the Site. Table 7 presents a comparison of the trigger values against the parameter concentrations at these locations for 2007 to 2016.

The trigger mechanism is defined as a three (3) tier system and is as follows:

Tier I Trigger Level

Any two (2) consecutive surface water samples from the routine annual monitoring program that exceed the defined trigger values or other parameters exceeding the PWQO with the exception of selected metals (i.e. cobalt, strontium, silver, iron, aluminum, and manganese) at surface water stations SW2 and SW3 may trigger the Tier I monitoring as indicated herein. Subsequent to the exceedance of one (1) or more parameters, an assessment will be provided to determine the necessity of Tier II monitoring. Metals are common in the natural environment and may be a result of weathering of nearby igneous and/or sedimentary rocks.

Tier II Trigger Level

Tier II monitoring will consist of consecutive monthly surface water sampling for the four (4) locations (i.e. SW1, SW2, SW3, and SW4). The list of parameters will be as in the routine sampling. The Tier II monitoring results shall be provided to the MOECC District Manger as soon as they are available. Any two (2) consecutive surface water samples from the Tier II monitoring program that exceed values as indicated above, will trigger the implementation of the appropriate contingency plan(s) and Tier III monitoring as outlined below.

Tier III Trigger Level

Within 60 days of the triggering of Tier III (i.e. two (2) consecutive monthly exceedances), the municipality will provide to the MOECC District Manager a detailed work plan and implementation schedule for an appropriate contingency to control leachate and Tier III monitoring program to verify the effectiveness of the contingency.

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Following approval from MOECC, these will be immediately implemented. Contingency Options may include the following:

 enhancement of the wetland facility. This would entail increasing the retention time in the wetland to further treat chemical concentrations;

 provide an attenuation zone to control any off-site impact;

 collection and treatment of contaminated groundwater or surface water north of the active filling area; and/or,

 pumping and treatment of contaminated groundwater from purge wells.

4.2.3.1 COMPLIANCE ASSESSMENT

The activation of the Tier I trigger mechanism requires one (1) or more of the following to occur:

 two (2) consecutive surface water samples from the routine annual monitoring program that exceed the defined trigger values; that is the exceedances of 75 percent of the RUC values for the following parameters: alkalinity, boron, chloride, hardness, nitrate, sodium, sulphate, TDS, and unionized ammonia (shown in Table 7).

 two (2) consecutive surface water samples from the routine annual monitoring program that exceed the PWQO with the exception of selected metals (i.e. aluminum, cobalt, iron, strontium, silver, and manganese) at surface water stations SW2 and SW3 (Table 5).

Exceedances of the Trigger values in 2016 are listed below:

 SW2: none

 SW3: none

Exceedances of the PWQO criteria, for two (2) or more consecutive occasions in 2016 (omitting those parameters stated above) are listed below:

 SW2: phenols

 SW3: pH (lab; low) and total phosphorus

In 2016, there were no reported exceedances of the trigger values from station SW2 and SW3. Regardless, given that concentrations of phenols at surface water location SW2 and pH (lab; low) and total phosphorus at station SW3 exceeded the PWQO on two (2) consecutive occasions, the Tier I trigger was activated. Tier I specifies: Subsequent to the exceedance of one (1) or more parameters, an assessment will be provided to determine the necessity of Tier II monitoring.

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In reviewing the concentrations of phenols, lab pH, and total phosphorus at background station SW1 in 2016, concentrations in the downstream water quality were observed to be similar to those observed in the upstream water quality. As such, no impacts were observed to occurring at the downstream locations from the Site and Tier II monitoring is not required.

4.2.4 SUMMARY

Surface water quality reported in 2016 was consistent to that reported in previous years. In general the surface water quality reported at the three (3) downstream surface water sampling locations were similar to the background water quality reported in 2016. Where Tier I of the trigger mechanism was observed to be activated in 2016, no impacts were observed to be related to the Site and Tier II monitoring was not initiated.

Given the continued un-impacted nature of the downstream surface water locations, as well as the dry conditions observed intermittently during the summer sampling event, it is recommended to reduce the frequency of the surface water sampling to twice annually, to be completed in the spring (high flow) and autumn (low flow). In addition, the parameter list should be reduced to those listed in Column 4 of Schedule 5 of the Landfill Standards (Ministry of the Environment, January 2012), as well as the following designated LIPs for the Site: boron, hardness, magnesium, manganese, potassium, and sodium. Lastly, as stations SW1, SW2, and SW3 adequately monitor potential impacts from the Site, station SW4 should be removed from the monitoring program.

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5.0 SITE OPERATIONS

5.1 SITE ACCESS AND SECURITY

The Site is accessed from the north side of Milburn Road. Natural topography, a man-made berm, natural vegetation, and trees help to partially obscure the Site from view. A chain link gate approximately 2.5 m high is located at the entrance to the Site to control unauthorized Site access. A sign at the entrance to Site indicates the ECA number, hours of operation, service area, accepted waste, and emergency telephone numbers. Additionally, the Township has budgeted for new directional and recycling signage, which they plan to install in 2017.

Site access is only permitted during operational hours, within the presence of the Site attendant. The hours of operation are:

Summer (May 1 - September 30) Winter (October 1 – April 30) Wednesday, Saturday: 8 AM to 12 PM Wednesday, Saturday: 8 AM to 12 PM Sunday, Holiday Monday: 2 PM to 6 PM Sunday, Holiday Monday:12 PM to 4 PM

All Township waste disposal sites are closed on December 25th and January 1st.

In 2016, all waste disposal and transfer operations were conducted under the supervision and direction of the Site attendant, employed by the Township. The Site attendant was responsible for ensuring that the safe and orderly operation and maintenance of the Site complied with the requirements of the ECA and the Environmental Protection Act (EPA) and its Regulations as administered by the MOECC. The Site attendant’s responsibilities included, but were not limited to the following:

 controlling admission of authorized vehicles with acceptable wastes;

 ensuring proper daily litter control;

 controlling collection and haulage of materials by a licensed hauler; and,

 maintaining a daily record of all operations which are available for inspection by the MOECC.

5.2 TRAINING

In 2016, all Site attendants attended the Waste Diversion Ontario (WDO) conference. Additional training was provided through webinars provided by Association of Municipalities Ontario (AMO) and WDO.

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5.3 DRAINAGE

On-site drainage is controlled by the surface topography. Typically, surface drainage is observed to flow from the waste mound to the west, north, and east. The ponded surface water in these areas is sampled by surface water monitoring stations to monitor any potential impacts from the Site.

5.4 ROADS

The Site access road has sufficient width at the entrance and within the Site to allow unimpeded travel and access for Site users and emergency equipment. During the Site visits conducted by Cambium in 2016, the Site access road was in good condition. The Site access road was maintained as necessary to permit safe and efficient waste disposal and recycling operations.

5.5 AESTHETICS

As reported by the Township, litter clean-up is performed by the landfill attendant one (1) hour before the Site opens and one (1) hour after the Site closes. As reported by the Township, an annual spring and autumn cleanup was completed in 2016. During the 2016 monitoring events, Cambium staff observed notable amounts of litter around the perimeter of the Site. This was also noted in the MOECC Inspection report, dated August 5, 2015 (Appendix B). The annual cleanup should continue in 2017 and litter collection should be completed on a regular basis to ensure good housekeeping.

5.6 COMPLAINTS

In 2016, the Township received complaints regarding tipping fees and conditions of the road ways. According to the Township, the issues were addressed directly with the complainants.

5.7 MONITORING WELL SECURITY

As part of the 2016 groundwater monitoring program, each monitoring well was inspected for compliance with Ontario Regulation 903 (Wells) (O. Reg. 903). It was noted during the 2016 monitoring program that there were no monitoring wells requiring maintenance, with the exception of monitoring well OV3, which was noted as damaged to such a degree that a sample could not be collected in October. Repairs should be completed on this monitoring well in 2017. If this well cannot be repaired, it should be decommissioned and/or replaced.

As previously discussed, Cambium technicians could not locate monitoring well OV2 during any of the 2016 monitoring events and is presumed to be buried or destroyed; this well does not require replacement assuming monitor OV3 can be repaired and/or is replaced.

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5.8 MATERIALS SUMMARY

The following materials were accepted at the Site in 2016, refer to Figure 3 for site layout.

 Domestic solid, non-hazardous  Blue Box Recyclables  Scrap Metal Waste

 Waste Electrical and Electronic  Brush Equipment (WEEE)

The recyclable materials collection depot established at the Irondale waste disposal site consists of four (4) 25m³ roll-off containers. Three of the bins are used for the collection of comingled containers (aluminum/steel, glass, and plastic); and fibres (cardboard, boxboard and paper). The fourth bin is used for the collection of scrap metal. Additionally there is one (1) bin for the collection of waste electrical and electronic equipment (WEEE).

5.8.1 SITE USAGE

Site usage, as documented by the Township, is summarized below.

 Number of vehicles: 2,769

 Number of garbage bags: 4,235

Although the topographic survey is an accurate representation to the amount of waste and cover material deposited at the Site, the Township’s records give insight to the sources and nature of the waste received.

5.8.2 SITE DIVERSION

Embedded Table 6 shows the volumes of materials received at the Site in 2016:

Embedded Table 6 Summary of Diverted Materials Material Blue Box Containers (plastic and glass) 13.67 tonnes Mixed Fibres (i.e. newsprint, magazines) 25.30 tonnes Sub total 38.97 WEEE1 0.00 TOTAL 38.97 Other Scrap Metal 4 Bins Notes: 1. As reported by the Township, no WEEE was transferred off-site in 2016.

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5.8.3 WASTE PLACEMENT, CELL DEVELOPMENT AND COVER MATERIAL

The Irondale waste disposal site accepts domestic waste and wood waste for on-site disposal from the permanent and seasonal population of the Township of Minden Hills and the southwest portion of the geographic Township of Glamorgan within the Municipality of Highlands East in accordance with the ECA. Based on observations by Cambium and information provided by the Township, to date, waste had only been deposited in the southern portion of the approved Site (Figure 3). In 2016, waste placement returned to the southwest corner of the existing limit of waste.

An area of fill beyond approved limits (FBAL) was identified in the northwest corner of the active waste area in 2015 (Cambium Inc., 2016). The volume of FBAL was estimated to be approximately 250 m3. According to the Township, the FBAL material was removed and the rea was regraded and revegetated. The Township confirmed on February 18, 2016 that the required grading, contouring, and application of adequate cover to the northwest slope were completed as required. Refer to Appendix F for photographs of the work completed.

On November 24, 2016 Cambium conducted a topographic survey of the active landfilling area of the Site. The generated contours are presented on Figure 3. Digital Terrain Modeling (DTM) was used to determine the volume generated over the year. DTM is a computerized process that uses the prismoidal volumetric difference of two (2) digital terrain models (topographical surfaces). This survey was compared to the previous surface completed in November 2015. The volume of material placed in the period between November 2015 and November 2016 was approximately 1,240 cubic metres. Embedded Figure 1 shows a summary of the annual waste and cover deposition at the Site.

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1,400

1,200

1,000

800

600

Volume (m3) Volume 400

200

0

Date

Embedded Figure 1 Annual Landfill Volume It should be noted that topographic surveys of waste disposal sites can be subject to a large margin of error due to the rough terrain and thin layers of waste involved. During the 2016 survey, there was an approximate error of 360 (+/-) cubic metres, which equates to a survey error of approximately 29%, based on an assumed error of only 50 mm over the active portion of this site. Deposition rates measured over longer periods of time tend to be more accurate than onetime measurements.

5.8.4 COVER MATERIAL

Cover material is stockpiled at the Site. Condition 19 (c) of the ECA requires that wastes be covered by the 15th day and the last day of each month during the summer months (between April 1st and November 1st) and by the last day of each month during the remainder of the year. Observations from the April 2016 Site visit indicated that the wastes had been recently covered and graded. All other Site visits indicated that the stockpile was present on-Site. As reported by the Township, approximately 80 tonnes of fill was trucked in for use as cover material in 2016.

5.9 REMAINING SITE CAPACITY

Digital Terrain Modelling (DTM) was used to determine the volume increase generated in 2016. The survey completed on November 24, 2016 was compared to the previous survey completed on November 10, 2015. To determine the remaining capacity of the Site, the existing volume was subtracted from the maximum approved

Cambium Inc. Page 27 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017 capacity including daily and intermediate cover and excluding final cover. Embedded Table 7 provides a summary of the current capacity of the Site.

Embedded Table 7 Capacity Calculations Item 2016 Value Site Area 17.2 ha Approved Waste Placement Area 8.0 ha Existing Area of Refuse Placement 0.72 ha Total Site Capacity 33,425 m³ Volume Added, 2016 1,240 m³ Existing Waste and Cover Placement, Total 16,740 m³ Remaining Capacity 27,180 m³ Average Annual Volume, five (5) year 560 m³ Notes: 1. Changes in Site usage, compaction and cover practices, and recyclable diversion rates will affect future annual fill volumes and consequently Site life. Annual topographic surveys should be completed to track changes in Site usage.

The ECA dated January 9, 2008 (Appendix A) prescribes a maximum additional volume for disposal of 33,425 m3 from September 2006 (Condition 38). In addition, the ECA also requires the Township to complete either a Design and Operations Plan or a Closure Plan (Condition 39), and determine the total amount of waste landfilled at the Site (Condition 40).

Although the Site has an approved waste disposal area of 8.0 hectares within a total Site area of 17.2 hectares, the landfilling of waste beyond the current existing waste disposal area of 0.72 hectares is very limited by the surrounding natural features which included bedrock outcrops, wetlands, streams, and ponds. The ECA requires a Design and Operations Plan detailing how the approved contours will be met, or a Closure Plan (Condition 39), and determination of the total amount of waste landfilled at the Site (Condition 40). Given this scenario, the remaining capacity is considerably less than 27,180 m3 and should be confirmed.

The Ministry of the Environment and Climate Change required this to be completed in 2013.

5.10 COMPLIANCE WITH ENVIRONMENTAL COMPLIANCE APPROVAL

The Township is generally operating the Site in compliance with the ECA, with the exception of meeting Condition 39 of the ECA as noted above.

Cambium Inc. Page 28 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

6.0 CONCLUSIONS AND RECOMMENDATIONS

The following conclusions were drawn from the results of the 2016 monitoring program completed at the Irondale waste disposal site.

 The shallow groundwater configuration beneath the Site indicated that the predominant groundwater flow direction is to the northwest within the shallow groundwater discharging to the down-gradient surface water systems.

 Minor groundwater quality impacts were reported at the western and eastern property boundary, as evidenced by concentrations of leachate indicator parameters at monitoring wells 98-5, 98-6, 98-7, and 98-8 at levels slightly greater than the background concentrations. Due to natural attenuation, the elevated concentrations observed at these monitors are less than those observed at the monitors directly down- gradient of the waste mound (i.e. OV3, 98-11, and 98-12).

 There were some RUC exceedances observed along the east and west property boundaries; however, these were observed to be sporadic (TDS) or naturally elevated concentrations (manganese). In addition, as the down-gradient groundwater use to the north is related to surface water use; the intent of the Reasonable Use Concept is considered to be met at all down-gradient property boundaries.

 In general the surface water quality reported at the three (3) downstream surface water sampling locations were similar to the background water quality reported in 2016. Where Tier I of the trigger mechanism was observed to be activated in 2016, no impacts were observed to be related to the Site and Tier II monitoring was not initiated.

 Based on the results of the 2015 annual survey and the delineation of the approved area of waste, it was noted that the a small amount of material (waste and cover) had been placed outside of the approved limit, commonly referred to as Fill Beyond Approved Limits (FBAL). The volume of FBAL was estimated to be approximately 250 m³. The Township confirmed that the required grading, contouring, and application of adequate cover to the northwest slope were completed as required.

 In 2016, the site diverted 38.97 tonnes of blue box recyclables materials.

 The volume of material placed in the landfill during the period between November 2015 and November 2016 was approximately 1,240 m³. The remaining volume is approximately 27,180 m³; however, due to the natural topography and surrounding environment remaining site capacity is considerably less than the reported volume.

Based on the results of the 2016 monitoring program, Cambium recommends the following:

Cambium Inc. Page 29 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

 Given the continued lack of impact at downstream surface water locations, as well as the dry conditions observed intermittently during the summer sampling event, it is recommended that surface water sampling frequency be reduced to twice annually (spring, autumn). In addition, the parameter list should be reduced to those listed in Column 4 of Schedule 5 of the Landfill Standards (Ministry of the Environment, January 2012), as well as the following designated LIPs for the Site: boron, hardness, magnesium, manganese, potassium, and sodium. Lastly, as stations SW1, SW2, and SW3 adequately monitor potential impacts from the Site, station SW4 should be removed from the monitoring program. Until approval is received from the MOECC, the groundwater sampling should occur semi-annually in the spring and autumn for the same parameter suite used in 2016 (Table 1).

 Sampling and analysis for volatile organic compounds should be completed at monitoring wells OV3, 98-6, and 98-11 every five (5) years, with the next event occurring in 2017.

 Note that OV2 was not able to be found in 2016 and well OV3 was observed to be damaged in October and could not be sampled. Although it is not recommended that monitor OV2 be replaced, efforts should be taken in 2017 to repair OV3; if the well cannot be repaired, it should be decommissioned and/or replaced.

 It is recommended that the blown litter around the Site be removed and that the Site attendant conducts regular inspections for litter around the Site. Additionally, adequate daily cover must be applied in the active landfilling area, to ensure that the waste is covered, and to limit the amount of wind-blown litter at the Site.

 Although the Site has an approved waste disposal area of 8.0 hectares within a total Site area of 17.2 hectares, the landfilling of waste beyond the current existing waste disposal area of 0.56 hectares is very limited by the surrounding natural features which included bedrock outcrops, wetlands, streams, and ponds. The amended ECA requires a Design and Operations Plan detailing how the approved contours will be met, or a Closure Plan (Condition 39) and determination of the total amount of waste landfilled at the Site (Condition 40). The Ministry of the Environment and Climate Change required this to be completed in 2013.

Cambium Inc. Page 30 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

REFERENCES Bendell-Young, L. (2003). Peatland Interstitial Water Chemistry in Relation to That of Surface Pools along a peatlnad mineral gradient. Water, Air, and Soil Pollution, 143, 363-375.

British Columbia Ministry of the Environment. (2016, March). British Columbia Approved Water Quality Guidelines: Aquatic Life, Wildlife, & Agriculture. Retrieved 11 18, 2016, from British Columbia Approved Water Quality Guidelines: http://www2.gov.bc.ca/assets/gov/environment/air-land- water/water/waterquality/wqgs-wqos/approved-wqgs/final_approved_wqg_summary_march_2016.pdf

Cambium Environmental Inc. (2013). 2012 Annual Report, Irondale Waste Disposal Site.

Cambium Environmental Inc. (March 2008). 2007 Annual Report, Irondale Waste Disposal Site.

Cambium Environmental Inc. (March 2010). 2009 Annual Report, Irondale Waste Disposal Site.

Cambium Inc. (2016). 2015 Annual Report, Irondale Waste Disposal Site.

Canadian Council of Ministers of the Environment. (2014). Canadian Water Quality Guidelines for the Protection of Aquatic Life. Retrieved 11 18, 2016, from Canadian Environmental Quality Guidelines, CCME: http://ceqg-rcqe.ccme.ca/en/index.html#void

Canadian Council of Ministers of the Environment. (2014). Lead. Retrieved February 5, 2015, from http://st- ts.ccme.ca/en/index.html?lang=fr&factsheet=124

Chapman and Putnam. (1984). The Physiography of Southern Ontario. Ontario Geological Survey Special Volume 2.

Environment Canada. (2016). Daily Data. Retrieved January 02, 2017, from Climate Data: http://climate.weather.gc.ca/climateData/

Freeze, R., & Cherry, J. (1979). Groundwater. Englewoods Cliffs, New Jersey: Prentice Hall.

Government of Canada. (2015). Canadian Climate Normals & Averages 1981-2010. Retrieved October 30, 2015, from Canadian Climate Normals: http://climate.weather.gc.ca/climate_normals/index_e.html

Health Canada. (2001). Priority Substances List Assessment Report for Road Salts. Retrieved November 2, 2015, from http://www.hc-sc.gc.ca/ewh-semt/pubs/contaminants/psl2-lsp2/road_salt_sels_voirie/index-eng.php

Ministry of Environment. (1993). Guidance Manual for Landfill Sites Receiving Municipal Waste (PIBS 2741). Queen's Printer for Ontario.

Ministry of the Environment. (1996). Guidance on Sampling and Analytical Methods for Use at Contaminated Sites in Ontario.

Cambium Inc. Page 31 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Ministry of the Environment. (April 1994). Guideline B-7: Incorporation of the Reasonable Use Concept into MOEE Groundwater Management Activities. Ontario Ministry of the Environment Program Development Branch: Ontario Ministry of the Environment.

Ministry of the Environment. (January 2012). Landfill Standards: A Guideline on the Regulatory and Approval Requirements for New or Expanding Landfilling Sites.

Ministry of the Environment. (July 1994). Water Management: Policies, Guidelines, Provinicial Water Quality Objectives of the Ministry of the Environment and Energy.

Ministry of the Environment, 2010. (n.d.). Monitoring and Reporting for Waste Disposal Sites Groundwater and Surface Water.

Robinson Consultants Inc. (March 2001). Site Development and Operations Report, 2000 Monitoring Report.

SGS Lakefield Research Limited. (March 2005). 2004 Annual Report, Irondale Waste Disposal Site.

Trent Conservation Coalition Source Protection Region. (2012). Trent Assessment Report Maps. Retrieved April 24, 2012, from Drinking Water Source Protection: http://www.trentsourceprotection.on.ca/theplanningprocess/assessmentreport/trentreport/maps/

Cambium Inc. Page 32 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

GLOSSARY OF TERMS Active Face/Area The portion of the landfill facility where waste is currently being deposited, spread and/or compacted prior to the placement of cover material. Adverse Environmental Impact Any direct or indirect undesirable effect on the environment resulting from an emission or discharge which is caused or likely to be caused by human activity. Annual Report Report documenting the results of water quality, environmental quality, and operations monitoring for the year, or for a period as prescribed in the Certificate of Approval. Approved Design and Operations Plan The design of a landfill site and it's facilities which have been submitted along with the application documents for which formal MOE approval has been issued through the Certificate of Approval. Approved Site or Facility A landfill site/facility for which there is an existing and current Certificate of Approval. Aquifer A geologic unit (soil or rock) that contains sufficient saturated permeable material to yield measurable quantities of water to wells and springs. Attenuation Natural process through which the concentrations of landfill generated contaminants are reduced to safe levels. Borehole Is a hole drilled for soil sampling purposes. Buffer Area An area of land situated within the peripheral area surrounding an active filling area, but limited in extent to the property boundary, assigned to provide space for remedial measures, contaminant control measures, and for the reduction or elimination of adverse environmental impact caused by migrating contaminants. Certificate of Approval The license or permit issued by the MOE for the operation of a landfill site. Issued to the owner of the site with conditions of compliance stated therein. Contaminant A compound, element or physical parameter, usually resulting from human activity, or found at elevated concentrations, that have or may have a harmful effect on public health or the environment. Contaminant Migration Path Route by which a contaminant will move from the site into adjacent properties or the natural environment. Usually a route that offers the least resistance to movement. Contamination Attenuation Zone The zone beneath the surface, located beyond the landfill site boundary, where contaminants will be naturally attenuated to predetermined levels. Also, see Reasonable Use Policy. Contingency Plan A documented plan detailing a co-ordinated course of action to be followed to control and remediate occurrences such as a fire, explosion, or release of contaminants in an uncontrolled manner that could threaten the environment and public health. Cover Material Material approved by the MOE that is used to cover compacted solid waste. Usually, a soil with suitable characteristics for specific end-use. Site Development Plan and Operations Report Development and Operations Plan or Report is a document detailing the planned sequence of activities through the landfill site's active life, the control systems, site facilities and monitoring systems, that are necessary. This document is required for obtaining a Certificate of Approval. Design Capacity The maximum amount of waste that is planned to be disposed of at a landfill site. Detection Limit Concentration under which a parameter cannot be quantitatively measured.

Cambium Inc. Page 33 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

EAA or EA Act Environmental Assessment Act, Revised Statutes of Ontario, 1990. One of the primary acts of legislation intended to protect, conserve and wisely manage Ontario's environment through regulating planning and development. EPA Environmental Protection Act, Revised Status of Ontario, 1990. EPA is another of the primary pieces of Provincial legislation governing the protection of the natural environment of the Province. Evapotranspiration The evaporation of all water from soil, snow, ice, vegetation and other surfaces, including the water absorbed by plants, that is released to the atmosphere as vapour. Fill Area The area of a landfill site designed and designated for the disposal of waste. Final Cover Soil material or soil in combination with synthetic membranes, overlain by vegetation in a planned landscape, placed over a waste cell that has reached the end of its active life. Groundwater Subsurface water that occurs beneath the water table in soils and rocks that are fully saturated. Hydraulic Conductivity The rate of flow of water through a cross-section under a specific hydraulic gradient. It is a property of the geologic formation and the fluid, in hydrogeologic applications where the fluid is water. (Units of m/day or cm/s). Hydraulic Gradient The head drop per unit distance in the direction of flow, the driving force for groundwater flow. Hydrogeology The study of subsurface waters and related geologic aspects of surface waters. Impermeable Fill Soil material that is placed as filling material that is sufficiently cohesive and fine grained to impede and restrict the flow of water through it. In situ Testing Testing done on-site, in the field, of material or naturally occurring substances in their original state. Landfill Gas Combustible gas (primarily methane and carbon dioxide) generated by the decomposition of organic waste materials. Landfill Site A parcel of land where solid waste is disposed of in or on land for the purposes of waste management. Leachate Water or other liquid that has been contaminated by dissolved or suspended particles due to contact with solid waste. Leachate Breakout Location where leachate comes to the ground surfaces; a seep of spring. Limit of Filling The outermost limit at which waste has been disposed of, or approved or proposed for disposal at a landfill. MOE Ontario Ministry of the Environment. Monitoring Regular or spontaneous procedures used to methodically inspect and collect data on the performance of a landfill site relating to environmental quality (i.e. air, leachate, gas, ground or surface water, unsaturated soils, etc.). Monitoring Well Is the constructed unit of casing and screen installed in a borehole. Multi-Level Monitoring Well More than one monitoring well installed at a given test well location. Native Soil Soil material occurring naturally in the ground at a location. Natural Attenuation Where contaminants are reduced to acceptable concentration levels by natural mechanisms (dilution, absorption onto the soil matrix, etc.), biological action, and chemical interaction.

Cambium Inc. Page 34 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Occupational Health and Safety Act The primary act of legislation enacted by Ontario Ministry of Labour to regulate and control the safety in the workplace, also Occupational Health and Safety Act, Revised Statutes of Ontario, 1990. Odour Control Minimizing or eliminating the nuisance and undesirable impact of objectionable or unpleasant odours arising from waste disposal operations. Open Burning Burning any matter whereby the resultant combustion products are emitted directly to the atmosphere without passing through an adequate stack, duct, or chimney. Operations Plan A document detailing the waste disposal operations in a planned, and if necessary, a staged manner, that ensure compliance with regulatory provisions concerning the operations of a landfill site. Operator (Site Operator)/Attendant The individual or organization who, through ownership or under contract, manages and operates a landfill site for the purpose of waste disposal. Owner A person, persons, organization or municipal authority who own a landfill facility or part of a landfill facility, and in whose name the Certificate of Approval for the site is issued. Percolation The movement of infiltrating water through soil. Permeability Often used interchangeable with hydraulic conductivity, but not strictly correct. Permeability is a property of the porous media only. Dependent upon media properties that affect flow, diameter, sphericity, roundness and packing of the grains. Piezometer A well that intersects a confined aquifer. Provisional Certificate of Approval (Provisional C of A) Same as Certificate of Approval. Reasonable Use Policy A policy developed by the Ministry to stipulate limits to the level of groundwater quality impairment that may be permitted to occur at site property boundaries, to allow the reasonable use of adjacent properties or land without adversely affecting public health and the environment. Recharge Zone An area where precipitation or surface run-off infiltrates into the ground and then, through natural percolation enters an aquifer. Recycling Sorting, collecting or processing waste materials that can be used as a substitute for the raw materials in a process or activity for the production of (the same or other) goods. For example, the "Blue Box" system, in-plant scrap handling, or raw material recovery systems. Recycling is also the marketing of products made from recycled or recycled materials. Reduction (of waste or component of 3Rs program) Those actions, practices or processes which result in the production or generation of less waste. Remedial Action Corrective action taken to clean-up or remedy a spill, an uncontrolled discharge of a contaminant, or a breach in a facility or its operations, in order to minimize the consequent threat to public health and the environment. Representative Sample A small portion of soil, water, etc. which can be subjected to testing and analysis, that is expected to yield results that will reliably represent the identical characteristics of the source of the material or of a larger body of material. Reuse (component of 3Rs program) The use of an item again in its original form, for a similar purpose as originally intended, or to fulfil a different function. Run-off The part of precipitation (rain water, snow melt) that flows overland and does not infiltrate the surface material (soil or rock). Saturated Zone The zone of a subsurface soil where all voids are filled with water. Sedimentation The deposition of fine grained soil in an undesirable location, caused by the scouring, erosion and transportation of earth materials by surface run-off.

Cambium Inc. Page 35 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Sensitive Land Use A land use where humans or the natural environment may experience an adverse environmental impact. Settlement The subsidence of the top surface and underlying waste of a landfill or waste cell as a result of densification under its own weight. Site Capacity The maximum amount of waste that is planned to be disposed (design capacity) or that has been disposed of at a landfill site. Site Closure The planned and approved cessation or termination of landfilling activities at a landfill site upon reaching its site capacity. Site Life The period of time from its inception through active period of waste disposal, to the time when a landfill site reaches its' site capacity, when it ceases to receive any further waste, including and up to closure. Solid Waste Any waste matter that cannot be characterized by its physical properties as a liquid waste product. Solid Waste Disposal Site or Facility A site or facility such as a landfill site where solid waste is disposed of. Source Separation The separation of various wastes at their point of generation for the purposes of recycling or further processing. Standpipe A monitoring well which intersects the water table aquifer. Stormwater Run-off that occurs as a direct result of a storm event or thaw. Stormwater Detention Control of stormwater by the construction of impoundments of structures for the purpose of regulating stormwater flows during high intensity rainfall events, that would otherwise transport excessive amounts of sediment, cause soil erosion or cause flooding. Stratigraphy The geologic sub-structuring, usually layered with different distribution, deposition and age. Surface Run-off (Drainage) See Run-off. Surface Water Water that occurs at the earth's surface (ponds, streams, rivers, lakes, oceans). Sub-Soil Soil horizons below the topsoil. Test hole Is a hole drilled for soil sampling purposes. Topsoil The uppermost layer of the soil containing appreciable organic materials in mineral soils. Adequate fertility to support plant growth. Unsaturated Zone (also vadose zone) - The zone in a porous sub-soil, where the voids are not completely water-filled, but contain some air-filled voids. Limited above by the land surface and below by the water-table. Vector A disease carrier and transmitter; usually an insect or rodent. V.O.C. Volatile organic compounds are those compounds which will readily volatilize (convert from liquid to gas phase) at conditions normally found in the environment. Waste Ashes, garbage, refuse, domestic waste, industrial waste, or municipal refuse and other used products as are designated or interpreted by the provisions of the Environmental Protection Act. Waste Disposal Site (Facility) Any land or land covered by water upon, into, in or through which, or building or structure in which, waste is deposited or processed and any machinery or equipment or operation required for the treatment or disposal of waste.

Cambium Inc. Page 36 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Waste Management System All facilities, equipment and operations for the complete management of waste, including the collection, handling, transportation, storage, processing and disposal thereof, and may include one or more waste disposal sites. Water Table The water level attained in a monitoring well which screens the surficial unconfined aquifer. Water Balance Amounts of water to various components in a system so that water entering the system equals the amount of water contained within and discharged out of a system. Water Level The level of water in a well. Well Casing The pipe that is used to construct a well. Well Screen A filtering device used to keep sediment from entering a well. Wetlands Areas where water is at, near or above the land surface long enough to be capable of supporting aquatic or hydrolytic vegetation, and which have soils indicative of wet conditions.

Cambium Inc. Page 37 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appended Figures

Cambium Inc. P.O. Box 325, 52 Hunter Street East Peterborough, Ontario, K9H 1G5 Tel: (705) 742.7900 Fax: (705) 742.7907 www.cambium-inc.com 345 LOT 26 CON 7 IRONDALE

45 WASTE DISPOSAL SITE 3 3 LOT 25 5 LOT 24 5 LOT 26 TOWNSHIP OF MINDEN HILLS CON 7 º COUNTY OF HALIBURTON CON 7 CON 6

345 3 5 LEGEND

0

50 Wells 3 LOT 23 MOECC Well Record CON 7 ## Surface Water Sampling Location

" Building

Minor Road

Watercourse, Permanent

0 35 Contour (index) LOT 22 Contour ( 5m ) CON 7 350 Lot Wetland Area

0 5 3 Water Area 50 LOT 24 3 CON 6 Wooded Area Property Boundary (17.2 ha) 345 Approved Limit of Waste (8.0 ha) Existing Limit of Waste SW3 (0.57 ha.)

URN RD 350 MILB SW2 SW1 LOT 25 phy phy IRONDALE.mxd Plan 350 CON 6 SW4 Notes: - Base mapping features are © Queen's Printer of Ontario, 2015 (this does not constitute an endorsement by the Ministry of Natural Resources or the LOT 22 Ontario Government). - Distances on this plan are in metres and can be converted to feet by dividing by 0.3048. - Cambium Inc. makes every effort to ensure this map is free from errors but CON 6 5 cannot be held responsible for any damages due to error or omissions. This

4

3 map should not be used for navigation or legal purposes. It is intended for LOT 23 general reference use only.

CON 6 P.O. Box 325, 52 Hunter Street East 0 4 3 Peterborough, Ontario, K9H 1G5 Tel: (705) 742.7900 Fax: (705) 742.7907

le Landfill AMP 2016\2017-02-09AMP FIG Local leLandfill2 Topogra 5 www.cambium-inc.com 35 LOT 25 CON 5 LOCAL TOPOGRAPHY PLAN LOT 21 LOT 24 LOT 23 CON 5 CON 6 0 Project No.: Date: March 2017 5 CON 5 3 4713-007 Rev.: 5 4 Scale: Projection: 3 0 1:8,000 0 50 100 150 20034 250 NAD 1983 UTM Zone 17N Created by: Checked by: Figure: 345 m GJM SNR 222 O:\GIS\project_MXDs\4700-4799\4713-007TMH - Ironda

2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Figure 5 - Groundwater Elevations

352.00

351.00 OV3 350.00 98-5 98-6 349.00 98-7 348.00 98-8 98-9 347.00 98-11

346.00 98-12

MW12-13 345.00

344.00

343.00

342.00 Groundwater Elevation (mASL) GroundwaterElevation Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-14 Dec-15 Dec-16

Date

2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appended Tables

Cambium Inc.

Table 1 Groundwater and Surface Water Monitoring Program Irondale Waste Disposal Site

Location Task Frequency Analytical Parameters Groundwater Alkalinity, Ammonia, COD, Chloride, Conductivity, DOC, Hardness, Nitrate, Nitrite, Phenols, OV3, 98-5, 98-6, 98-7, • Measure groundwater Phosphate, Sulphate, TDS, 98-8, 98-9, 98-11, 98- levels Twice 12, MW12-13 Aluminum, Boron, Barium, • Groundwater sampling Beryllium, Calcium, Cadmium,

Cobalt, Chromium, Copper, Iron, • Field measurements (pH, (Spring, Lead, Magnesium, Manganese, temperature, conductivity) Autumn) Molybdenum, Nickel, Phosphorus, 1 QA/QC Duplicate Potassium, Sodium, Sulphur, Selenium, Silicon, Silver, Thallium, Tin, Titanium, Vanadium, Zinc Twice OV3 (Spring, TSS, BOD Autumn) Once every five OV3, 98-6, • Groundwater sampling (5) years EPA 624 VOCs 98-11 (Spring)* Surface Water Alkalinity, Ammonia, Ammonia (unionized), BOD, COD, Chloride, Conductivity, Hardness, Nitrate, • Surface water sampling Three times Nitrite, Phenols, Sulphate, TDS, SW1, SW2, SW3, • Flow estimates TOC, Total Nitrogen, TSS, SW4 • Field measurements (pH, Turbidity, Aluminum, Arsenic, temperature, conductivity, (Spring, Boron, Barium, Beryllium, Calcium, Summer, 1 QA/QC Duplicate dissolved oxygen) Cadmium, Chromium, Copper, Autumn) Iron, Lead, Magnesium, Manganese, Mercury, Phosphorus, Potassium, Sodium, Selenium, Silver, Zinc

*Next sample event is scheduled for 2017. 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 2 Groundwater Elevation Data

Site Monitor OV3 98-5 98-6 98-7 98-8 98-9 98-11 98-12 MW12-13 Easting 693140 693202 693214 693218 693013 693181 693116 693055 693111 Northing 4971707 4971745 4971734 4971710 4971694 4971616 4971704 4971673 4971640 Original Ground Elevation* (m) 345.18 345.05 345.35 346.16 344.14 351.28 344.87 344.94 348.42 Stick-up (m) 1.13 1.06 0.89 1.11 0.70 0.90 0.91 1.07 0.95 Measuring Point Elevation (m) 346.31 346.11 346.24 347.27 344.84 352.18 345.79 346.01 349.38 Borehole Depth** (m) 2.20 3.26 4.05 3.6 1.33 1.81 4.52 5.77 3.92 3-May-05 345.38 344.65 345.55 346.01 342.63 350.97 344.58 344.96 - 17-Oct-05 344.97 343.90 345.07 - - 350.29 343.91 343.85 - 31-May-06 345.09 345.02 345.20 345.53 344.54 - 344.64 344.67 - 8-Nov-06 345.18 345.17 345.33 345.69 344.49 350.68 344.75 344.76 - 9-May-07 345.16 345.03 345.25 345.59 344.47 350.45 344.46 344.73 - 9-Oct-07 344.80 345.09 345.21 345.28 344.10 - 344.46 344.34 - 20-May-08 345.16 345.09 345.28 345.69 344.06 350.88 344.55 344.48 - 14-Oct-08 344.76 345.02 345.15 345.25 344.10 - 344.41 344.38 - 22-Apr-09 345.16 345.09 345.31 345.77 344.12 350.90 344.60 344.52 - 6-Oct-09 345.05 345.13 345.30 345.57 344.15 - 344.55 344.49 - 19-May-10 345.17 345.05 345.27 345.61 344.44 350.62 344.59 344.66 - 30-Sep-10 345.06 345.16 345.32 345.60 344.15 351.07 344.55 344.52 - 27-Apr-11 345.08 345.10 345.31 345.78 344.04 351.01 344.63 344.56 - 4-Oct-11 344.68 345.04 - 345.29 - - 344.04 344.33 - 25-Apr-12 345.00 345.07 345.30 345.67 344.04 350.91 344.54 344.48 - 25-Oct-12 344.64 344.97 345.10 345.20 - 351.31 344.32 344.32 345.99 8-May-13 345.04 345.04 345.26 345.69 344.02 350.40 344.53 344.44 346.99 6-Nov-13 345.06 345.10 345.33 345.74 344.03 350.43 344.58 344.53 347.14 7-May-14 345.05 345.05 345.30 345.73 344.02 350.97 344.57 344.44 347.15 14-Oct-14 344.70 345.02 345.19 345.34 344.00 - 344.39 344.39 346.46 15-Apr-15 344.92 345.11 345.41 345.72 - 351.24 344.58 344.61 347.35 13-Oct-15 344.47 344.01 345.06 346.08 343.96 - 344.26 344.32 346.00 27-Apr-16 345.16 344.98 345.27 345.73 344.01 350.84 344.54 344.48 346.73 11-Oct-16 - 344.80 344.93 344.99 343.77 - 344.15 344.10 345.71 Notes: 1. "*" Indicates information from Irondale W.D.S Site Development and Operations 2000 Monitoring Report (Robinson Consultants, March 2001) 2. "**" Borehole depth includes stick-up. 3. "-" indicates elevation not measured/available 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10

Alkalinity (as CaCO3) 500 252 553 583 323 433 338 374 412 474 368 540 440 Conductivity (µS/cm) NV NV -----1290 1513 1320 1150 1280 1280 pH (Units) 6.5 - 8.5 NV -----7.83 6.97 7.63 7.87 7.36 7.82 Solids - Total Dissolved (TDS) 500 266 1060 218 766 943 949 869 1050 931 869 857 794 Solids - Total Suspended (TSS) NV NV 126 1150 200 200 116 68 < 4 64 44 116 26 Carbon - Dissolved Organic (DOC) 5 NV 47.7 63.8 20.2 47.7 30.4 32.5 33.6 33.7 27 25.6 27.9 Oxygen Demand - Biological (BOD) NV NV 2 < 62 226774< 2< 4< 2 Oxygen Demand - Chemical (COD) NV NV 150 166 120 134 94 110 84 100 69 91 75 Phenols NV NV 0.003 < 0.002 0.004 0.004 < 0.002 < 0.002 0.003 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 120 95 49 55 63 58 53 61 29 49 24

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 17 21.6 12.1 14.9 5.2 8.6 6.6 6.5 6.8 6 8.1 Sulphate 500 252 170 280 260 250 310 250 390 220 250 150 170 Sulphur NV NV 56.3 100 92.9 93.8 99.9 73.7 126.0 72.0 77 48.2 58.3

Nitrogen - Nitrite (NO2) 1 NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 0.09 0.06 < 0.05 0.05 0.13 0.09 0.06 < 0.05 0.1 Nitrogen - Total Kjeldahl (TKN) NV NV 17.6 23 14.2 17.8 5.9 9.8 6.7 6.6 7.7 7.3 8.8 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 0.04 < 0.03 Hardness (as CaCO3) 500 253 553 510 408 478 560 494 674 599 514 522 533 Aluminum 0.1 NV 0.07 0.055 0.020 0.030 0.032 0.044 0.046 0.100 0.028 0.034 0.034 Barium 1 NV 0.131 0.109 0.088 0.0765 0.0860 0.0910 0.0887 0.0837 0.0623 0.0916 0.0788 Beryllium NV NV < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00008 < 0.00002 Boron 5 1.26 2.12 3.17 2.20 3.02 2.32 2.42 2.23 2.22 1.68 2.09 2.13 Cadmium 0.005 NV < 0.0001 < 0.0001 0.00008 < 0.00006 < 0.00006 < 0.000003 0.00003 0.00003 < 0.000003 0.000064 0.000015 Calcium NV NV 148 134 110 125 162 143 189 172 151 157 156 Chromium (Total) 0.05 NV 0.01 0.013 0.0015 0.0018 0.0010 0.0055 0.0012 0.0027 0.0057 0.0017 0.0018 Cobalt NV NV 0.0064 0.0035 0.00312 0.00357 0.00500 0.00450 0.00360 0.00355 0.00224 0.00276 0.00244 Copper 1 NV 0.0058 < 0.005 0.0330 0.0092 0.0032 0.0025 0.0049 0.0042 0.0028 0.0022 0.0037 Iron 0.3 NV 21.2 16.4 11.0 3.1 46.4 28.9 24.3 22.1 12.8 12.9 11.4 Lead 0.01 NV 0.00050 < 0.0002 0.00124 < 0.00002 0.00004 0.00005 0.00006 0.00007 0.00021 0.00005 0.00046 Magnesium NV NV 44.3 42.7 32.3 40.2 38.0 33.4 49.0 41.1 33.5 31.8 34.6 Manganese 0.05 0.04 5.52 3.49 2.61 2.71 1.21 1.77 1.06 0.99 0.98 0.79 0.67 Molybdenum NV NV 0.00160 0.0013 0.0010 0.0007 0.0010 0.0016 0.0018 0.0013 0.0010 0.0010 0.0009 Nickel NV NV 0.01 0.037 0.0080 0.0130 0.0082 0.0070 0.0061 0.0056 0.0063 0.0064 0.0066 Potassium NV NV 41.4 54.4 39.3 47.0 37.8 43.6 36.3 45.0 28.9 31.7 28.7 Phosphorous - Total NV NV 0.04 0.06 < 0.01 0.02 0.05 0.05 0.03 < 0.01 0.01 < 0.01 0.04 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 0.002 0.003 0.002 < 0.001 0.003 0.002 < 0.001 Silicon NV NV 2.77 1.89 1.84 1.69 3.75 3.05 4.49 3.18 3.49 4.05 3.83 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00008 < 0.00001 Sodium 200 101 137.0 135.0 85.8 114.0 58.1 95.3 58.6 99.7 50.4 74.5 44.7 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 9.99990 0.00005 0.00006 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0004 0.00024 < 0.00001 0.00007 0.00002 < 0.00001 0.00027 Titanium NV NV 0.004 < 0.005 0.0009 0.0012 0.0010 0.0016 0.0011 0.0013 0.0022 0.0018 0.0019 Vanadium NV NV 0.0268 0.0030 0.0022 0.0012 0.0021 0.0033 0.0017 0.0031 0.0024 0.0035 0.0030 Zinc 5 NV 0.005 0.012 0.0288 0.0111 0.0113 0.0110 0.0080 0.0040 0.008 0.005 0.008 Conductivity (µS/cm)4 NV NV 1124.0 1315.0 2515.0 1072.0 1020.0 1053.0 1270.0 1391.0 1250.0 1246.0 1185.0 pH (Units)4 6.5 - 8.5 NV 6.9 6.69 6.7 7.2 6.6 6.29 6.60 6.60 6.75 6.51 6.95 Temperature (°C)4 NV NV - - 10.9 9.1 11.2 13.0 11.3 12.9 5.7 13.4 11.9 Dissolved Oxygen 4 NVNV------Oxidation Reduction Potential (mV) 4 NVNV------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 Parameter ODWQS2 RUC ³ 30-Sep-10 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15

Alkalinity (as CaCO3) 500 252 467 425 130 547 413 331 526 482 514 480 Conductivity (µS/cm) NV NV 1120 978 386 1160 920 962 1200 1120 1150 1040 pH (Units) 6.5 - 8.5 NV 7.31 7.47 7.63 7.91 7.44 7.70 7.96 7.75 7.82 7.69 Solids - Total Dissolved (TDS) 500 266 686 746 246 686 677 666 720 674 737 689 Solids - Total Suspended (TSS) NV NV < 4 37 94 241 67 52 33 25 19 118 Carbon - Dissolved Organic (DOC) 5 NV 21.8 22.6 7.0 24.9 25.3 24.8 27.0 25.2 14.9 24.4 Oxygen Demand - Biological (BOD) NV NV < 2< 2< 2< 4< 4< 4< 4< 4< 4< 4 Oxygen Demand - Chemical (COD) NV NV 80 70 21 76 65 61 82 72 78 64 Phenols NV NV < 0.002 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 28 17 2.0 20.0 21.0 12.0 39.0 32.0 32.0 26

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 5 5.4 0.3 6.2 2.3 4.5 4.8 5.3 1.7 5.2 Sulphate 500 252 110 160 87 87 140 140 71 87 98 89 Sulphur NV NV 45.2 56.5 16.6 32.2 38.0 49.9 28.6 29.9 32.4 30.6

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 < 0.05 0.11 0.36 0.15 < 0.06 < 0.06 0.19 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV 5.05.1< 0.56.72.6----- Phosphate - Total (Phos_T) NV NV < 0.03 < 0.03 0.06 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 - Hardness (as CaCO3) 500 253 511 523 173 515 444 425 508 485 492 497 Aluminum 0.1 NV 0.043 0.0365 0.0173 0.0396 0.0439 0.0309 0.0331 0.0290 0.0320 0.040 Barium 1 NV 0.0919 0.0658 0.1520 0.0803 0.0708 0.0600 0.0767 0.0708 0.0711 0.073 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000008 0.000007 Boron 5 1.26 2.41 2.07 0.508 2.070 2.160 2.040 2.090 2.110 2.260 1.72 Cadmium 0.005 NV 0.000011 0.000048 < 0.000003 0.000018 0.000039 0.000017 0.00002 0.000008 0.000009 0.000004 Calcium NV NV 150 155 54 150 128 124 150 144 146 148 Chromium (Total) 0.05 NV 0.0017 0.002 0.0013 0.0014 0.0066 0.0011 0.0130 0.0013 0.0009 0.0006 Cobalt NV NV 0.00283 0.00264 0.00026 0.00230 0.00202 0.00205 0.00220 0.00171 0.00158 0.00125 Copper 1 NV 0.0021 0.0028 0.0009 0.0023 0.0050 0.0016 0.0045 0.0016 0.0016 0.0012 Iron 0.3 NV 13.0 11.4 1.5 11.1 7.4 11.3 7.9 8.2 5.7 5.8 Lead 0.01 NV 0.00009 0.00021 < 0.00002 0.00003 0.00010 0.00004 0.00002 < 0.00002 0.00001 < 0.00001 Magnesium NV NV 33.3 33.0 9.2 34.4 30.1 27.2 32.3 30.7 31.0 30.9 Manganese 0.05 0.04 1.22 1.56 0.06 1.88 1.11 1.36 1.35 0.70 0.67 0.56 Molybdenum NV NV 0.0009 0.00078 0.00098 0.00102 0.00087 0.00101 0.00141 0.00089 0.00041 0.00072 Nickel NV NV 0.0073 0.004 0.0016 0.0052 0.0041 0.0043 0.0061 0.0051 0.0033 0.0031 Potassium NV NV 26.4 0.1 4.0 30.2 22.1 21.3 27.0 25.6 24.9 23.10 Phosphorous - Total NV NV 0.02 24.30 0.02 < 0.03 0.18 0.01 < 0.009 < 0.009 0.02 < 0.03 Selenium 0.01 NV 0.002 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 Silicon NV NV 3.85 3.72 4.84 3.82 3.40 3.66 3.96 3.88 3.70 3.40 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00009 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 Sodium 200 101 45.6 33.1 4.8 38.7 37.9 28.4 45.5 37.9 42.0 36.5 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.000005 < 0.000005 Tin NV NV 0.00007 0.00008 < 0.00001 0.00007 0.00003 0.00004 0.00008 0.00013 0.00006 < 0.00001 Titanium NV NV 0.0017 0.0015 0.0008 0.0011 0.0014 0.0009 0.0017 0.0011 0.0008 0.0010 Vanadium NV NV 0.0025 0.0031 0.00094 0.00138 0.00162 0.00110 0.00475 0.00111 0.00139 0.00116 Zinc 5 NV 0.01 0.006 < 0.002 0.008 < 0.002 0.006 0.004 0.003 0.005 0.004 Conductivity (µS/cm)4 NV NV 1179.0 1184.0 284.0 1180.0 980.0 1029 1250 1100 1510 1040 pH (Units)4 6.5 - 8.5 NV 6.48 6.65 6.49 6.76 6.81 6.79 6.59 6.95 6.09 6.86 Temperature (°C)4 NV NV 14.6 8.4 10.5 7.3 11.3 11.9 9.6 10.2 14.6 5.2 Dissolved Oxygen 4 NV NV - - - 10.03 7.7 7.6 3.82 5.46 - 3.78 Oxidation Reduction Potential (mV) 4 NV NV - - - -50 87 12 164 -27 -47 79 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 Parameter ODWQS2 RUC ³ 3-May-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 563 856 724 17 719 942 755 626 683 660 512 Conductivity (µS/cm) NV NV ----1690 2160 1570 1600 1440 1270 1090 pH (Units) 6.5 - 8.5 NV ----7.54 7.25 7.95 7.98 7.35 7.85 7.59 Solids - Total Dissolved (TDS) 500 266 983 1270 1230 1220 1060 1450 1070 1230 963 906 683 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 34.8 20.3 61.5 49.7 54.1 47.8 36.2 35.4 27.4 32.4 29.6 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 138 167 164 186 160 129 119 102 113 94 76 Phenols NV NV 0.008 0.005 0.008 < 0.002 < 0.002 0.006 0.006 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 48 86 100 85 89 82 73 46 51 39 34

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 7.2 8.0 8.9 9.0 19.2 13.4 16.9 10.9 11.7 9 13.5 Sulphate 500 252 160 150 100 100 69 200 110 280 110 65 51 Sulphur NV NV 48.6 57.1 32.5 37.2 25.5 68.7 38.2 81 41.5 24.3 22.4

Nitrogen - Nitrite (NO2) 1NV< 0.06 0.30 0.09 0.07 0.28 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 0.16 4.94 6.93 3.27 2.83 5.12 1.96 0.93 3.24 3.05 3.66 Nitrogen - Total Kjeldahl (TKN) NV NV 8.5 10.1 11.7 10.0 21.5 14.3 17.3 11.5 13.4 10.2 14 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 0.03 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 580 817 713 729 575 903 699 799 602 631 474 Aluminum 0.1 NV 0.021 0.034 0.021 0.030 0.027 0.063 0.067 0.019 0.018 0.017 0.022 Barium 1 NV 0.196 0.188 0.251 0.201 0.302 0.288 0.275 0.224 0.221 0.230 0.192 Beryllium NV NV < 0.005 < 0.00004 < 0.00004 < 0.00004 0.00003 < 0.00002 0.00003 < 0.00002 0.00004 < 0.00002 < 0.00002 Boron 5 1.26 4.63 5.46 5.07 6.72 5.07 8.30 4.55 4.7 3.91 4.6 3.32 Cadmium 0.005 NV < 0.0001 0.00015 < 0.00006 < 0.00006 0.00005 0.00008 0.00005 0.000025 0.000046 0.000033 0.000027 Calcium NV NV 139 193 166 163 143 201 168 181 147 156 130 Chromium (Total) 0.05 NV 0.007 0.0026 0.0013 0.0024 0.0052 0.0024 0.0025 0.0092 0.0016 0.0020 0.0016 Cobalt NV NV 0.0023 0.0015 0.0035 0.0025 0.0058 0.0033 0.0028 0.0027 0.0027 0.0036 0.0051 Copper 1 NV 0.0047 0.0330 0.0125 0.0087 0.0060 0.0134 0.0074 0.0128 0.0069 0.0078 0.0039 Iron 0.3 NV 0.84 0.12 0.12 0.13 2.19 0.55 0.33 0.12 0.31 0.469 2.02 Lead 0.01 NV 0.00050 0.00150 0.00007 0.00009 0.00010 0.00013 0.00004 0.00009 0.00004 0.00006 < 0.00002 Magnesium NV NV 56.5 81.4 72.3 77.8 52.7 97.4 68.1 84.3 56.7 58.8 36.6 Manganese 0.05 0.04 5.12 2.58 7.01 3.28 7.62 4.14 4.14 3.96 4.74 4.06 5.23 Molybdenum NV NV 0.0016 0.0031 0.0023 0.0020 0.0024 0.0029 0.0022 0.0018 0.0015 0.0015 0.0012 Nickel NV NV 0.008 0.0122 0.0142 0.0152 0.0150 0.0158 0.0103 0.013 0.0114 0.0144 0.0115 Potassium NV NV 31.4 49.9 44.3 48.00 56.40 62.40 52.50 43.00 35.20 37.10 33.10 Phosphorous - Total NV NV 0.03 0.02 3.00 0.07 0.10 0.04 < 0.01 0.01 0.01 0.04 0.06 Selenium 0.01 NV < 0.005 < 0.003 < 0.003 < 0.001 0.005 0.001 0.001 0.006 0.002 0.002 0.002 Silicon NV NV 3.65 2.84 4.27 3.43 5.48 4.70 4.39 4.20 5.45 4.60 6.15 Silver NV NV < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00003 < 0.00001 < 0.00001 Sodium 200 101 86.1 102.0 125.0 81.1 104.0 109.0 113.0 84.7 66.7 61.0 47.0 Thallium NV NV < 0.0002 < 0.0001 0.00009 < 0.0001 0.0002 0.0001 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.0003 < 0.0003 < 0.0003 0.00032 0.00001 0.00006 0.00003 0.00002 0.00019 0.00006 Titanium NV NV < 0.003 0.0016 0.0019 0.0014 0.0019 0.0015 0.0015 0.0023 0.0015 0.0013 0.0019 Vanadium NV NV 0.0207 0.0048 0.0013 0.0033 0.0026 0.0025 0.0025 0.0031 0.0029 0.0035 0.0023 Zinc 5 NV 0.004 0.023 0.011 0.012 0.018 0.010 0.005 0.010 0.004 0.006 0.010 Conductivity (µS/cm)4 NV NV 944.0 3405.0 1310.0 1042.0 1534.0 1811.0 1562.0 1710.0 1393.0 1374.0 1153.0 pH (Units)4 6.5 - 8.5 NV 7.1 6.8 6.7 6.9 6.4 6.8 6.78 6.78 6.82 6.43 6.99 Temperature (°C)4 NV NV - 11.1 8.3 13.5 12.2 10 12.9 5.5 11.9 14.7 14.4 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV-3 Parameter ODWQS2 RUC ³ 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16

Alkalinity (as CaCO3) 500 252 574 339 710 374 502 462 574 537 449 490 633 Conductivity (µS/cm) NV NV 1210 982 1550 830 1380 1030 1380 1170 959 1060 1370 pH (Units) 6.5 - 8.5 NV 7.54 7.63 7.87 7.42 7.70 7.78 7.90 7.67 7.67 7.80 7.38 Solids - Total Dissolved (TDS) 500 266 943 626 983 560 889 603 866 746 569 637 983 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 28.4 17.3 43.8 24.2 35.0 26.8 36.9 21.8 27.3 24.0 32.7 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 96 71 94 60 97 83 92 82 75 96 109 Phenols NV NV 0.004 0.003 < 0.002 < 0.002 < 0.002 < 0.002 0.003 < 0.002 < 0.002 0.005 0.004 Chloride 250 125 32 16 40 30 43 32 37 47 39 40 47

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 8.8 0.1 6.8 8.4 9.2 7.9 7.1 11.0 9.4 14.6 7.4 Sulphate 500 252 140 130 150 42 150 28 160 36 27 27 120 Sulphur NV NV 51 46.3 54.1 18.6 53.7 11.5 52.2 10.8 9.6 10.0 43.4

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 0.17 0.03 0.06 0.04 0.06 0.05 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 1.39 0.06 0.27 2.71 0.50 1.51 < 0.06 3.14 2.30 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV 12.2 2.9 6.6 11.8 ------Phosphate - Total (Phos_T) NV NV < 0.03 < 0.03 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 - < 0.03 < 0.03 Hardness (as CaCO3) 500 253 585 417 681 355 552 369 590 469 338 388 683 Aluminum 0.1 NV 0.023 0.043 0.023 0.019 0.022 0.020 0.018 0.014 0.024 0.032 0.021 Barium 1 NV 0.185 0.078 0.154 0.166 0.186 0.152 0.166 0.127 0.110 0.185 0.219 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.000007 0.000008 0.000009 0.000012 Boron 5 1.26 4.64 2.24 5.15 2.91 4.17 2.71 4.25 3.33 2.39 2.49 4.47 Cadmium 0.005 NV 0.000072 0.000035 0.000032 0.000077 0.000044 0.000039 0.000039 0.000019 0.000023 0.000035 0.000052 Calcium NV NV 144 120 168 91 139 95 147 125 90 105 184 Chromium (Total) 0.05 NV 0.0030 0.0027 0.0016 0.0082 0.0014 0.0125 0.0014 0.0007 0.0004 0.0006 0.0008 Cobalt NV NV 0.0065 0.00255 0.00272 0.00415 0.00306 0.00346 0.00273 0.00195 0.00244 0.00580 0.00738 Copper 1 NV 0.0046 0.0021 0.0057 0.0216 0.0080 0.0088 0.0079 0.0038 0.0035 0.0026 0.0029 Iron 0.3 NV 12.3 13.8 1.9 3.3 2.2 2.5 1.2 0.5 2.2 8.4 21.4 Lead 0.01 NV 0.00005 0.00003 0.00003 0.00003 0.00006 < 0.00002 0.00003 0.00002 < 0.00001 0.00004 < 0.00001 Magnesium NV NV 54.5 28.6 63.4 31.1 48.7 32.3 54.3 38.1 27.4 30.6 54.4 Manganese 0.05 0.04 5.34 1.26 2.58 8.71 5.89 5.81 4.41 1.77 3.25 6.48 6.03 Molybdenum NV NV 0.0008 0.00077 0.00114 0.00096 0.00079 0.00138 0.00079 0.00068 0.00089 0.00075 0.00098 Nickel NV NV 0.0098 0.0060 0.0091 0.0061 0.0083 0.0087 0.0086 0.0065 0.0057 0.0062 0.0079 Potassium NV NV 0.04 21.80 32.60 25.30 31.30 28.20 26.90 30.50 20.20 26.00 24.40 Phosphorous - Total NV NV 26.90 < 0.01 0.22 0.17 0.01 < 0.009 < 0.009 0.02 < 0.03 0.01 0.01 Selenium 0.01 NV < 0.001 0.002 < 0.001 < 0.001 < 0.001 0.003 0.001 < 0.001 < 0.001 0.000 0.000 Silicon NV NV 5.47 3.21 5.13 6.40 5.88 5.69 5.56 5.36 4.72 6.94 6.47 Silver NV NV < 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium 200 101 52.7 33.7 67.7 48.3 57.3 50.5 52.8 48.7 43.0 42.7 67.7 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000045 0.000046 0.000117 0.000044 Tin NV NV 0.00008 < 0.00001 0.00009 0.00003 0.00003 0.00009 0.00021 0.00004 0.00003 0.00016 < 0.00001 Titanium NV NV 0.0017 0.0014 0.0010 0.0007 0.0009 0.0008 0.0010 0.0003 0.0005 0.0006 0.0009 Vanadium NV NV 0.0034 0.00168 0.00090 0.00082 0.00088 0.00405 0.00075 0.00082 0.00073 0.00113 0.00094 Zinc 5 NV 0.003 0.004 0.003 0.006 < 0.002 0.003 < 0.002 0.006 0.003 0.004 0.003 Conductivity (µS/cm)4 NV NV 1404.0 985.0 1470.0 260.0 1443 1100 1340 1340 1100 1110 1250 pH (Units)4 6.5 - 8.5 NV 6.62 6.10 6.8 7.24 6.67 6.55 6.97 6.91 6.93 6.59 6.71 Temperature (°C)4 NV NV 10 13.5 7.9 11.5 11 9.8 10.2 13.5 5.6 13.3 7.0 Dissolved Oxygen 4 NV NV - - 3.03 4.99 4.29 2.88 2.34 - 2.69 7.4 3.36 Oxidation Reduction Potential (mV) 4 NV NV - - 92 64 88 77 32 13 -18 -20 131 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 72 223 116 207 94 211 81 154 65 122 75 103 Conductivity (µS/cm) NV NV -----859265596233432254342 pH (Units) 6.5 - 8.5 NV -----7.04 6.79 7.25 7.42 7.15 7.63 7.44 Solids - Total Dissolved (TDS) 500 266 177 - 223 546 223 631 174 431 177 317 146 166 Solids - Total Suspended (TSS) NV NV -540------Carbon - Dissolved Organic (DOC) 5 NV 5.4 18.4 7.0 14.8 6.6 16.1 3.5 11.8 3 7.5 4.6 6.3 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 18 48 23 45 21 46 < 8 35 < 8 21 < 8 38 Phenols NV NV 0.002 0.005 < 0.002 0.003 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 2.7 33 4.4 35.0 5.9 17.0 2.6 8.9 2.3 4.5 1.8 2.5

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV < 0.1 0.4 0.2 0.4 0.2 < 0.1 < 0.1 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 62 160 59 160 75 220 46 160 44 94 34 58 Sulphur NV NV 20.4 48.8 18.8 46.6 25.2 73.4 15.6 48.2 12.8 33.9 11.9 21.2

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 0.56 < 0.05 1.50 1.14 1.67 0.79 0.50 1.71 0.25 1.47 0.08 0.25 Nitrogen - Total Kjeldahl (TKN) NV NV 0.5 0.5 < 0.5 0.8 < 0.5 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 0.08 0.04 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 112 346 131 339 170 406 114 317 95 215 107 158 Aluminum 0.1 NV 0.027 0.032 0.0310 0.0367 0.0314 0.0398 0.0258 0.0444 0.0244 0.0159 0.0172 0.0232 Barium 1 NV 0.038 0.116 0.0418 0.1380 0.0553 0.1250 0.0347 0.0983 0.0344 0.072 0.0456 0.0673 Beryllium NV NV < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 0.00003 < 0.00002 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 Boron 5 1.26 0.46 1.13 0.438 0.865 0.487 1.260 0.454 0.845 0.345 0.693 0.395 0.665 Cadmium 0.005 NV < 0.0001 < 0.0001 < 0.00006 < 0.00006 < 0.00006 0.00005 0.00002 0.00003 0.000003 0.00002 0.000005 0.000009 Calcium NV NV 34.9 103 40.2 102.0 52.7 120.0 35.4 94.2 29.2 65.9 33.2 49 Chromium (Total) 0.05 NV 0.002 0.011 0.0004 0.0007 0.0009 0.0039 0.0007 0.0014 0.0018 0.0007 0.0008 0.0007 Cobalt NV NV < 0.0003 0.0007 0.0003 0.0006 0.0003 0.0007 0.0002 0.0004 0.0001 0.0003 0.0002 0.0003 Copper 1 NV 0.0016 0.006 0.0029 0.0043 0.0030 0.0053 0.0071 0.0050 0.0049 0.0021 0.0025 0.0030 Iron 0.3 NV 0.05 0.03 0.02 0.07 0.03 0.02 0.03 0.03 0.02 0.02 0.012 0.034 Lead 0.01 NV 0.00120 < 0.0002 0.00107 < 0.00002 0.00002 < 0.00002 0.00009 0.00021 0.00017 0.00003 0.00077 0.00011 Magnesium NV NV 6.14 21.4 7.55 20.30 9.40 25.90 6.32 19.90 5.43 12.30 5.87 8.68 Manganese 0.05 0.04 0.035 0.388 0.069 0.456 0.100 0.305 0.036 0.114 0.044 0.067 0.003 0.029 Molybdenum NV NV 0.0004 0.0009 0.00083 0.00111 0.0008 0.00134 0.00068 0.00119 0.00054 0.00102 0.00085 0.00111 Nickel NV NV < 0.001 0.002 0.0008 0.0012 < 0.0007 0.0029 0.0006 0.0015 0.0006 0.002 0.0014 0.0025 Potassium NV NV 4.04 16 6.82 15.00 8.23 15.9 6.1 11.3 4.98 6.17 3.91 5.12 Phosphorous - Total NV NV < 0.02 0.08 < 0.01 0.03 0.03 0.04 0.01 < 0.01 < 0.01 < 0.01 0.023 0.01 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 Silicon NV NV 3.58 3.81 2.53 3.87 3.31 4.24 3.34 3.57 3.16 4.11 3.41 4.03 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 Sodium 200 101 5.8 33.5 10.0 32.4 8.6 22.1 6.2 15.0 4.6 7.9 3.5 5.2 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 0.00060 0.00001 0.00005 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0018 0.0001 < 0.00001 0.00002 < 0.00001 < 0.00001 0.0001 0.00015 Titanium NV NV < 0.003 < 0.005 0.0005 0.0012 0.0006 0.0009 0.0003 0.0006 0.0005 0.0008 0.0004 0.0009 Vanadium NV NV 0.0055 0.0030 0.0024 0.0024 0.0020 0.0032 0.0016 0.0026 0.0017 0.0020 0.0016 0.0022 Zinc 5 NV 0.006 0.011 0.007 0.022 0.008 0.009 0.008 0.004 0.008 0.007 0.004 0.005 Conductivity (µS/cm)4 NV NV 173.0 624.0 648.0 513.0 267.0 715.0 255.0 688.0 230.0 516.0 218.0 334.0 pH (Units)4 6.5 - 8.5 NV 6.6 6.22 6.8 7.1 6.4 6.91 6.98 6.51 6.80 6.42 6.87 7.05 Temperature (°C)4 NV NV - - 10.8 9.2 8.3 11.2 6.6 10.7 3.9 11.0 10.4 12.0 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 Parameter ODWQS2 RUC ³ 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 47 133 72 149 42 66 65 112 70 93 53 104 Conductivity (µS/cm) NV NV 102 421 200 400 131 171 160 282 167 243 125 275 pH (Units) 6.5 - 8.5 NV 7.12 7.34 7.50 7.07 7.33 7.79 7.44 7.51 7.62 7.85 7.19 7.25 Solids - Total Dissolved (TDS) 500 266 100 266 106 297 71 94 97 177 106 126 103 169 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 3.3 9.6 5.2 11.8 23.8 5.2 5.1 4.7 5.8 5.5 3.4 6.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 13 21 15 24 12 13 9 19 < 8 23 9 19 Phenols NV NV 0.007 0.003 < 0.002 < 0.002 < 0.002 < 0.002 0.004 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 0.7 2.8 1.8 2.7 0.9 1.4 0.9 1.9 2.0 2.0 1.0 3.0

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV < 0.1 0.3 < 0.1 < 0.1 < 0.1 0.2 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 19 62 23 66 13 17 15 27 18 26 12 36 Sulphur NV NV 7.3 21.5 6.7 23.9 5.2 4.6 4.1 10.7 5.0 10.0 3.9 10.7

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 2.21 0.09 < 0.05 0.59 0.06 < 0.06 0.07 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5< 0.5< 0.5< 0.5------Phosphate - Total (Phos_T) NV NV 0.19 0.08 < 0.03 0.09 - < 0.03 < 0.03 0.12 - < 0.03 0.05 0.10 Hardness (as CaCO3) 500 253 64 188 70 192 63 51 63 142 76 136 59 137 Aluminum 0.1 NV 0.0246 0.0302 0.0264 0.0253 0.0237 0.0242 0.0204 0.0218 0.0256 0.028 0.02 0.02 Barium 1 NV 0.0444 0.122 0.042 0.087 0.040 0.033 0.040 0.108 0.049 0.111 0.043 0.101 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000014 < 0.000007 < 0.000007 0.000007 0.000012 Boron 5 1.26 0.352 0.905 0.357 0.976 0.299 0.262 0.280 0.519 0.506 0.495 0.213 0.47 Cadmium 0.005 NV 0.000044 0.000014 0.000022 0.000018 0.000006 0.000027 0.000010 0.000028 0.000012 0.000008 0.000008 0.000007 Calcium NV NV 20 58.0 22.2 56.6 19.3 15.7 19.7 43.2 23.8 42.1 18.5 42.5 Chromium (Total) 0.05 NV 0.0005 0.0011 < 0.0005 0.0071 < 0.0005 0.0016 < 0.0005 0.0003 0.0003 0.0002 0.0006 0.0005 Cobalt NV NV 0.0002 0.00037 0.00017 0.00042 0.00015 0.00016 0.00013 0.00058 0.00008 0.00013 0.00007 0.000143 Copper 1 NV 0.0022 0.0030 0.0028 0.0036 0.0018 0.0029 0.0021 0.0031 0.0026 0.0017 0.00143 0.00187 Iron 0.3 NV 0.025 0.024 0.013 0.020 0.036 0.010 0.110 0.014 0.013 0.033 0.008 0.13 Lead 0.01 NV 0.00008 < 0.00002 0.00003 < 0.00002 0.00003 < 0.00002 < 0.00002 0.00003 0.00002 0.00001 < 0.00001 0.00001 Magnesium NV NV 3.30 10.40 3.63 12.20 3.33 2.75 3.43 8.16 3.91 7.53 3.07 7.48 Manganese 0.05 0.04 0.014 0.036 0.009 0.028 0.011 0.007 0.010 0.022 0.008 0.018 0.006 0.017 Molybdenum NV NV 0.00043 0.00068 0.00108 0.00112 0.00094 0.00216 0.00115 0.00101 0.00085 0.00107 0.00164 0.00065 Nickel NV NV 0.0006 0.0019 0.0007 0.0010 0.0004 0.0005 0.0005 0.0003 0.0004 0.0003 0.0002 0.0003 Potassium NV NV 0.01 5.50 3.00 5.78 2.56 2.47 2.57 4.31 2.61 3.69 2.59 4.00 Phosphorous - Total NV NV 3.29 < 0.009 1.22 0.5 < 0.009 < 0.009 < 0.009 < 0.009 0.12 < 0.003 < 0.003 0.003 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00011 0.00009 0.00007 Silicon NV NV 3.08 3.70 2.50 3.75 2.65 2.26 2.78 3.76 3.03 4.41 3.06 3.83 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium 200 101 2.0 6.3 2.2 6.6 2.0 1.9 1.9 4.0 2.4 4.2 3.2 4.4 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000028 0.000018 0.00002 < 0.000005 0.000022 Tin NV NV 0.00006 < 0.00001 0.00001 < 0.00001 < 0.00001 0.00007 0.00011 0.00002 0.00008 0.00012 < 0.00001 < 0.00001 Titanium NV NV 0.0004 0.0008 0.0004 0.0006 0.0007 0.0005 0.0004 0.00017 0.00029 0.00024 0.00018 0.00011 Vanadium NV NV 0.0015 0.0021 0.0018 0.0021 0.00136 0.00269 0.00168 0.00214 0.00168 0.00148 0.00143 0.00191 Zinc 5 NV 0.004 0.003 0.006 < 0.002 < 0.002 0.002 < 0.002 0.012 0.004 0.006 < 0.002 0.003 Conductivity (µS/cm)4 NV NV 143.6 414.0 170.0 440.0 139.2 160 1070 290 170 90 130 320 pH (Units)4 6.5 - 8.5 NV 7.79 6.47 7.03 7.33 7 7.49 7.67 6.96 7.16 7.84 6.76 6.5 Temperature (°C)4 NV NV 7.9 11.4 6.7 11.4 6.6 9.4 7.9 12.8 5.5 12.7 5.9 13 Dissolved Oxygen 4 NV NV - - 2.53 6.9 3.21 6.54 6.83 - 2.39 4.5 2.13 4.11 Oxidation Reduction Potential (mV) 4 NV NV - - -9 66 4 64 -32 -57 -30 31 -23 90 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10

Alkalinity (as CaCO3) 500 252 98 208 122 169 94 176 97 191 88 161 95 Conductivity (µS/cm) NV NV -----626286570266427288 pH (Units) 6.5 - 8.5 NV -----7.39 6.99 7.62 7.58 7.48 7.83 Solids - Total Dissolved (TDS) 500 266 254 - 200 346 189 431 174 400 191 297 183 Solids - Total Suspended (TSS) NV NV -460------Carbon - Dissolved Organic (DOC) 5 NV 4.2 13.1 3.9 8.9 4.2 11.0 3.4 11.0 3 5 3.4 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 17 38 15 29 15 37 < 8 30 9 15 12 Phenols NV NV < 0.002 0.004 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 3.9 23 5.0 11.0 4.6 13.0 3.6 8.1 3.2 5.1 2.7

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.2 0.2 0.2 0.1 0.2 < 0.1 < 0.1 < 0.1 0.1 < 0.1 < 0.1 Sulphate 500 252 62 130 42 82 56 120 44 110 42 63 34 Sulphur NV NV 21.5 42.6 14.6 23.7 18.4 43.1 14.1 35.4 13.7 21.8 13.4

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 0.68 0.12 0.63 0.74 0.93 0.31 0.17 1.65 0.39 0.49 0.13 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 0.05 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 150 324 147 228 148 289 128 294 135 215 146 Aluminum 0.1 NV 0.018 0.011 0.0149 0.0136 0.0139 0.0238 0.0104 0.0186 0.0094 0.0053 0.0050 Barium 1 NV 0.112 0.163 0.116 0.148 0.130 0.175 0.107 0.162 0.114 0.162 0.138 Beryllium NV NV < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00003 < 0.00002 Boron 5 1.26 0.42 0.75 0.276 0.443 0.235 0.725 0.312 0.647 0.263 0.367 0.228 Cadmium 0.005 NV < 0.0001 < 0.0001 < 0.00006 < 0.00006 < 0.00006 0.00002 0.00001 0.00001 < 0.000003 0.000009 < 0.000003 Calcium NV NV 46.1 99.8 45.6 70.7 45.5 88.0 39.6 89.5 41.9 66.4 45.4 Chromium (Total) 0.05 NV 0.002 0.008 < 0.0003 0.0004 0.0008 0.0028 0.0006 0.0008 0.0016 0.0006 0.0007 Cobalt NV NV < 0.0003 0.0007 0.0002 0.0003 0.0002 0.0004 0.0002 0.0003 0.0002 0.0002 0.0002 Copper 1 NV < 0.0008 < 0.005 0.0008 0.0011 0.0017 0.0021 0.0032 0.0016 0.0025 0.001 0.0007 Iron 0.3 NV 0.73 0.85 0.55 0.75 0.98 0.69 0.85 0.68 1.13 1.19 1.02 Lead 0.01 NV 0.00050 < 0.0002 0.00083 < 0.00002 0.00010 < 0.00002 0.00008 0.00021 0.00021 0.00004 0.00008 Magnesium NV NV 8.48 18.1 7.95 12.60 8.32 16.80 6.99 17.20 7.34 11.90 7.98 Manganese 0.05 0.04 0.044 0.329 0.066 0.110 0.056 0.114 0.043 0.097 0.0603 0.0678 0.022 Molybdenum NV NV 0.0005 0.0010 0.0007 0.0010 0.0007 0.0012 0.0007 0.0012 0.0008 0.0017 0.0014 Nickel NV NV < 0.001 0.002 0.0009 < 0.0007 < 0.0007 0.0021 0.0006 0.0014 0.0009 0.002 0.0006 Potassium NV NV 3.84 12.2 6.13 7.45 4.98 10.90 4.70 7.33 3.71 4.71 3.51 Phosphorous - Total NV NV < 0.02 0.09 < 0.01 0.01 0.02 0.04 0.01 < 0.01 0.01 < 0.01 0.02 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Silicon NV NV 4.85 5.23 4.58 5.00 4.54 4.87 5.02 4.44 5.08 5.62 4.62 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 Sodium 200 101 5.9 22.5 5.2 15.3 6.0 17.0 5.8 11.7 4.1 6.7 4.3 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 0.00001 < 0.000002 0.00001 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0017 0.00011 < 0.00001 0.00002 < 0.00001 < 0.00001 0.00008 Titanium NV NV < 0.003 < 0.005 0.0007 0.0006 0.0006 0.0008 0.0004 0.0005 0.0006 0.0006 0.0004 Vanadium NV NV 0.0056 < 0.002 0.0012 0.0009 0.0014 0.0016 0.0008 0.0011 0.0013 0.0012 0.0012 Zinc 5 NV 0.003 0.007 0.010 0.005 0.008 0.009 0.007 0.001 0.010 0.008 0.001 Conductivity (µS/cm)4 NV NV 229.0 513.0 551.0 355.0 196.0 599.0 287.0 664.0 310.0 452.0 277.0 pH (Units)4 6.5 - 8.5 NV 6.7 6.5 6.6 7.2 6.6 6.82 6.70 6.63 6.87 6.51 6.91 Temperature (°C)4 NV NV - - 11 9.5 10.3 10.5 8.8 10.4 5 10.8 12.2 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 98-6 Parameter ODWQS2 RUC ³ 30-Sep-10 27-Apr-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 141 86 122 140 79 100 105 142 110 145 86 172 Conductivity (µS/cm) NV NV 384 162 310 350 224 259 260 324 252 339 200 415 pH (Units) 6.5 - 8.5 NV 7.6 7.5 7.84 7.42 7.76 7.97 7.85 7.86 7.84 8.01 7.43 7.72 Solids - Total Dissolved (TDS) 500 266 203 171 180 251 100 151 171 191 166 174 154 269 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 6.5 3.3 3.0 9.1 4.5 4.0 4.4 5.4 4.3 4.3 2.7 5.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 19 20 < 8 16 < 8 15 9 15 8 19 9 13 Phenols NV NV < 0.002 0.003 < 0.002 < 0.002 < 0.002 < 0.002 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 4.523.32.72.62.62.52.93323

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.1 0.2 < 0.1 < 0.1 < 0.1 0.3 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 52 27 29 45 26 26 22 30 24 30 18 38 Sulphur NV NV 19.9 10.3 10.5 16.7 7.91 9.54 7.08 10.2 7.5 11.6 6.7 12.9

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 0.09 < 0.05 0.08 0.08 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 0.16 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5< 0.5< 0.5< 0.5------Phosphate - Total (Phos_T) NV NV < 0.03 0.12 < 0.03 0.05 - 0.04 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 199 111 120 189 103 121 108 159 114 178 106 220 Aluminum 0.1 NV 0.0067 0.0084 0.0092 0.0279 0.012 0.0065 0.0049 0.0098 0.0122 0.027 0.005 0.004 Barium 1 NV 0.153 0.117 0.115 0.178 0.106 0.121 0.112 0.147 0.111 0.158 0.109 0.194 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.000007 < 0.000007 < 0.000007 < 0.000007 < 0.000007 Boron 5 1.26 0.447 0.260 0.271 0.622 0.254 0.313 0.240 0.399 0.392 0.420 0.256 0.626 Cadmium 0.005 NV < 0.000003 0.000018 < 0.000003 0.000016 0.000004 0.000012 0.000004 0.000016 < 0.000003 0.000003 < 0.000003 0.000005 Calcium NV NV 62.6 34.8 37.6 58.3 31.6 37.8 33.6 49.2 36.2 56.3 33.3 68.5 Chromium (Total) 0.05 NV < 0.0005 < 0.0005 < 0.0005 0.0031 < 0.0005 0.0018 < 0.0005 0.00023 0.00013 0.00012 0.00042 0.00039 Cobalt NV NV 0.0003 0.0003 0.0002 0.0003 0.000132 0.000153 0.00013 0.000584 0.000082 0.000093 0.000077 0.000145 Copper 1 NV 0.0014 0.0009 0.0014 0.002 0.001 0.001 0.001 0.00155 0.00081 0.00082 0.00154 0.00083 Iron 0.3 NV 1.10 1.14 0.839 1.24 0.996 0.783 0.934 0.957 0.77 1.09 0.813 1.26 Lead 0.01 NV 0.00006 0.00003 0.00002 0.00002 0.00003 < 0.00002 < 0.00002 0.00002 < 0.00001 < 0.00001 0.00003 0.00002 Magnesium NV NV 10.50 5.83 6.38 10.50 5.49 6.48 5.89 8.80 5.87 9.10 5.64 11.90 Manganese 0.05 0.04 0.0608 0.0453 0.0409 0.0688 0.0399 0.0421 0.0422 0.0534 0.038 0.0522 0.0379 0.068 Molybdenum NV NV 0.0018 0.0012 0.0012 0.0009 0.0012 0.0019 0.0016 0.0015 0.0010 0.0013 0.0015 0.00125 Nickel NV NV 0.0025 0.0006 0.001 0.0011 0.0005 0.0009 0.0007 0.0006 0.0003 0.0004 0.0003 0.0006 Potassium NV NV 4.46 0.04 2.96 4.28 2.56 2.91 2.63 3.31 2.62 3.35 2.48 3.60 Phosphorous - Total NV NV 0.01 3.06 0.20 0.21 0.01 < 0.009 < 0.009 < 0.009 < 0.03 0.004 0.007 0.004 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00007 0.00008 < 0.00004 Silicon NV NV 5.41 4.51 4.35 5.87 4.15 4.57 4.61 5.32 4.68 5.63 4.73 5.95 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium 200 101 5.8 3.2 3.3 5.6 3.0 4.3 3.2 4.9 3.7 5.2 3.2 6.8 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.000005 < 0.000005 < 0.000005 < 0.000005 < 0.000005 Tin NV NV 0.00016 0.00003 < 0.00001 0.00005 0.00002 0.00006 0.00007 0.00003 < 0.00001 0.0001 < 0.00001 < 0.00001 Titanium NV NV 0.0009 0.0005 0.0004 0.0005 0.0005 0.0004 0.0003 0.00017 0.0003 0.00035 0.00021 0.00012 Vanadium NV NV 0.0009 0.0010 0.0008 0.0010 0.0011 0.0013 0.0006 0.00076 0.00071 0.00068 0.00055 0.00067 Zinc 5 NV 0.009 0.005 0.003 0.004 0.004 < 0.002 < 0.002 0.010 0.002 0.006 < 0.002 < 0.002 Conductivity (µS/cm)4 NV NV 396.0 243.0 270.0 400.0 296 300 250 337 270 410 220 440 pH (Units)4 6.5 - 8.5 NV 7.29 7.46 7.19 7.31 7.6 7 7.04 6.52 6.6 7.47 6.64 7.01 Temperature (°C)4 NV NV 11.5 7.6 6.9 11.2 7.3 9.5 9.1 10.8 6.3 10.8 5.5 12.1 Dissolved Oxygen 4 NV NV - - 3.2 4.3 4.72 2.5 2.92 - 3.74 4.24 2.43 3.99 Oxidation Reduction Potential (mV) 4 NV NV - - -14 65 48 61 35 9 -17 40 -19 101 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 17 55 13 25 26 41 23 42 21 28 18 26 Conductivity (µS/cm) NV NV -----263190274146140100108 pH (Units) 6.5 - 8.5 NV -----6.81 6.53 7.13 6.92 6.49 7.07 6.6 Solids - Total Dissolved (TDS) 500 266 191 - 171 186 111 189 129 206 114 123 71 51 Solids - Total Suspended (TSS) NV NV -171------Carbon - Dissolved Organic (DOC) 5 NV 6.2 6.6 5.8 7.5 6.0 7.4 6.2 6.6 5.4 4.6 3.8 5.5 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 24 20 22 21 30 27 18 22 10 19 21 14 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 2.3 3.2 2.6 2.5 2.0 1.8 0.5 2.4 0.4 < 0.2 < 1 < 0.2

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.5 0.1 0.3 0.1 0.3 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 91 66 70 85 66 77 63 93 43 35 19 17 Sulphur NV NV 29.1 22 19.4 25.9 20.9 24.8 20.5 30.8 12.9 12.9 6.46 6.5

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 4.65 2.08 4.43 2.42 1.11 1.47 0.24 0.39 0.55 < 0.05 < 0.05 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV NV 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 0.6 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 0.06 0.06 0.06 0.06 Hardness (as CaCO3) 500 253 111 120 70 113 82 112 79 127 64 59 37 39 Aluminum 0.1 NV 0.337 0.084 0.202 0.160 0.165 0.073 0.101 0.087 0.0966 0.0958 0.265 0.138 Barium 1 NV 0.038 0.051 0.0330 0.0391 0.0310 0.0500 0.0324 0.0538 0.0332 0.0518 0.0469 0.0627 Beryllium NV NV < 0.005 < 0.001 0.00005 < 0.00004 0.00005 0.00004 < 0.00002 0.00004 < 0.00002 0.00004 < 0.00002 0.00002 Boron 5 1.26 0.61 0.51 0.473 0.741 0.600 0.643 0.545 0.604 0.382 0.496 0.27 0.423 Cadmium 0.005 NV < 0.0001 < 0.0001 0.00007 < 0.00006 < 0.00006 0.00005 0.00004 0.00003 0.000014 0.000023 0.000012 0.000012 Calcium NV NV 31.6 37 19.7 31.3 23.0 32.1 22.8 37.1 18.9 17.5 11.5 12.3 Chromium (Total) 0.05 NV 0.001 0.004 < 0.0003 0.0006 0.0009 0.0016 0.0008 0.0008 0.0011 0.0007 0.001 0.0009 Cobalt NV NV 0.0011 0.0007 0.0006 0.0007 0.0005 0.0005 0.0003 0.0004 0.0002 0.0003 0.0002 0.0002 Copper 1 NV 0.0009 < 0.005 0.0012 0.0015 0.0016 0.0032 0.0073 0.0040 0.004 0.0014 0.0022 0.0019 Iron 0.3 NV < 0.02 0.04 0.02 0.02 0.03 0.03 0.04 0.03 0.09 0.06 0.24 0.252 Lead 0.01 NV 0.00050 < 0.0002 0.00130 < 0.00002 0.00011 0.00003 0.00013 0.00025 0.00021 0.00004 0.00094 0.00007 Magnesium NV NV 7.83 6.62 5.06 8.57 5.93 7.83 5.24 8.41 4.12 3.64 1.99 2.12 Manganese 0.05 0.04 0.034 0.006 0.027 0.016 0.015 0.006 0.015 0.009 0.0129 0.00945 < 0.0002 0.0092 Molybdenum NV NV < 0.0003 < 0.0003 0.0001 0.0002 0.0001 0.0006 0.0002 0.0003 0.0002 0.0002 0.0003 0.0003 Nickel NV NV 0.002 < 0.001 0.0013 0.0008 0.0008 0.0011 0.0008 0.0008 0.0007 0.0008 0.0012 0.0015 Potassium NV NV 1.43 4.2 1.56 2.41 1.32 3.47 1.91 2.35 1.05 1.13 0.88 0.931 Phosphorous - Total NV NV < 0.02 0.04 < 0.01 < 0.01 0.02 0.02 0.01 < 0.01 < 0.01 < 0.01 0.035 0.019 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Silicon NV NV 2.14 1.67 1.82 1.93 1.57 1.73 1.42 1.36 1.43 1.89 1.45 2.16 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Sodium 200 101 5.7 7.4 5.3 8.5 5.0 7.8 4.8 5.3 2.2 2.1 1.1 1.4 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 0.00001 0.00000 0.00002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0013 0.00016 < 0.00001 0.00004 < 0.00001 < 0.00001 0.0001 0.00008 Titanium NV NV < 0.003 < 0.005 0.0008 0.0007 0.0010 0.0008 0.0017 0.0009 0.0016 0.0021 0.0219 0.0088 Vanadium NV NV 0.0042 < 0.002 0.0011 0.0013 0.0013 0.0018 0.0015 0.0018 0.0013 0.0020 0.0029 0.0027 Zinc 5 NV 0.003 0.008 0.0074 0.0103 0.0077 0.0100 0.0090 0.0040 0.01 0.003 0.004 0.006 Conductivity (µS/cm)4 NV NV 233.0 228.0 474.0 200.0 110.0 255.0 1569.0 292.0 150.0 108.3 83.6 89.0 pH (Units)4 6.5 - 8.5 NV 6.7 5.95 6.6 6.5 5.4 6.62 6.06 6.83 7.12 6.11 7.10 5.91 Temperature (°C)4 NV NV - - 10.8 9.7 9.7 13.0 7.0 13.8 4.7 13.3 12.3 15.8 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 98-7 Parameter ODWQS2 RUC ³ 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 18 28 24 26 647 36 32 35 30 27 17 22 Conductivity (µS/cm) NV NV 52 100 77 76 76 89 77 80 68 65 47 58 pH (Units) 6.5 - 8.5 NV 6.66 6.93 6.99 6.85 6.55 7.26 7.02 7.06 7.07 7.09 7.23 7.01 Solids - Total Dissolved (TDS) 500 266 71 71 46 91 49 60 74 54 43 < 30 37 60 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 3.9 6.5 4.9 7.6 9.2 5.3 6.1 7.4 5.5 5.3 5.3 7.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 31 21 13 19 22 19 13 15 8 25 22 25 Phenols NV NV 0.003 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 < 0.2 < 0.2 0.5 0.3 0.4 0.4 < 0.2 0.4 2.0 < 1 < 1 1.0

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV < 0.1 0.3 < 0.1 < 0.1 < 0.1 0.2 < 0.1 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 1112101198552544 Sulphur NV NV 4.31 4.73 3.59 3.91 3.09 2.58 1.85 1.66 1.4 1.3 1.2 2

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 0.38 < 0.05 < 0.05 0.1 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV 0.6 < 0.5 < 0.5 0.70 ------Phosphate - Total (Phos_T) NV NV 1.18 0.12 < 0.03 0.2 - 0.07 0.08 0.03 - < 0.03 0.06 0.19 Hardness (as CaCO3) 500 253 29 36 29 30 32 35 32 30 30 28 21 26 Aluminum 0.1 NV 0.203 0.165 0.12 0.251 0.0731 0.14 0.117 0.139 0.153 0.15 0.271 0.229 Barium 1 NV 0.0379 0.0335 0.0386 0.027 0.0153 0.0448 0.0315 0.0339 0.0304 0.0215 0.0202 0.0179 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00002 0.00002 0.00001 0.00002 0.000014 Boron 5 1.26 0.212 0.368 0.245 0.312 0.217 0.247 0.194 0.226 0.159 0.233 0.189 0.275 Cadmium 0.005 NV 0.00004 0.000005 0.000012 0.000021 < 0.000003 0.000032 0.000009 0.000020 0.000006 0.000024 0.000008 0.000008 Calcium NV NV 9 11.5 9.4 9.8 9.9 11.3 10.4 9.6 9.8 9.2 6.8 8.6 Chromium (Total) 0.05 NV < 0.0005 0.0012 0.0007 0.00180 0.00050 0.00170 0.00070 0.00069 0.00066 0.00064 0.00101 0.00094 Cobalt NV NV 0.0002 0.00021 0.00015 0.00022 0.000099 0.000169 0.00011 0.000467 0.000074 0.000078 0.000085 0.000104 Copper 1 NV 0.0014 0.0022 0.0018 0.0024 0.0013 0.0013 0.0015 0.00162 0.00146 0.00181 0.00347 0.00225 Iron 0.3 NV 0.219 0.551 0.207 0.245 0.037 0.292 0.150 0.205 0.227 0.152 0.106 0.149 Lead 0.01 NV 0.00012 0.00009 0.00006 0.00013 0.00002 0.00006 0.00004 0.00004 0.00004 0.00010 0.00029 0.00007 Magnesium NV NV 1.48 1.66 1.37 1.42 1.53 1.63 1.53 1.38 1.31 1.22 1.05 1.08 Manganese 0.05 0.04 0.0058 0.0054 0.0044 0.00410 0.00430 0.00500 0.00350 0.00430 0.00398 0.00229 0.00276 0.00185 Molybdenum NV NV 0.0002 0.0002 0.0003 0.00018 0.00018 0.00115 0.00022 0.00023 0.00015 0.00032 0.00035 0.00037 Nickel NV NV 0.0008 0.0009 0.0005 0.0004 0.0002 0.0003 0.0004 0.0002 0.0002 0.0002 0.0003 0.0002 Potassium NV NV 0.018 0.899 0.490 0.721 0.512 0.718 0.644 0.635 0.47 0.802 0.318 0.829 Phosphorous - Total NV NV 0.549 0.013 0.070 0.51 < 0.009 < 0.009 < 0.009 0.015 0.07 0.003 0.007 0.006 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00015 0.00009 0.00008 Silicon NV NV 1.35 1.65 1.33 1.52 1.29 1.80 1.42 1.89 1.75 1.76 1.29 1.85 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium 200 101 0.8 1.1 0.8 1.1 0.8 0.9 0.6 0.7 0.8 0.8 0.6 0.9 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.000005 0.000008 0.000014 < 0.000005 < 0.000005 Tin NV NV 0.00009 < 0.00001 0.00003 0.00002 0.00003 0.00006 0.00004 0.00001 < 0.00001 0.00015 < 0.00001 < 0.00001 Titanium NV NV 0.0118 0.0124 0.0074 0.0178 0.0019 0.0106 0.0077 0.00723 0.00886 0.00902 0.02004 0.02001 Vanadium NV NV 0.0025 0.00403 0.00214 0.00360 0.00158 0.00289 0.00205 0.00256 0.00240 0.00274 0.00190 0.00271 Zinc 5 NV 0.004 0.004 0.006 0.005 < 0.002 0.002 0.005 0.004 0.002 0.008 0.004 0.003 Conductivity (µS/cm)4 NV NV 73.1 84.7 70 90 67.6 100 80 145 60 350 60 60 pH (Units)4 6.5 - 8.5 NV 6.61 6.40 7.31 7.87 7.56 6.95 6.44 6.18 7.31 7.88 7.04 7.41 Temperature (°C)4 NV NV 5.8 12.3 6.9 11.3 7.9 9.9 6.2 12.8 5.6 11.2 5 12.6 Dissolved Oxygen 4 NV NV - - 8.09 6.15 7.91 5.5 3.24 - 5.63 1.71 5.6 6.85 Oxidation Reduction Potential (mV) 4 NV NV - - 42 46 39 122 140 21 -26 67 -40 79 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 Parameter ODWQS2 RUC ³ 3-May-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09

Alkalinity (as CaCO3) 500 252 245 45263629332439 Conductivity (µS/cm) NV NV ----124136168145215 pH (Units) 6.5 - 8.5 NV ----6.85 6.48 7.10 6.80 6.60 Solids - Total Dissolved (TDS) 500 266 91 143 174 34 100 126 131 123 180 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 2.4 1.2 3.1 3.4 2.4 4.9 3.8 3.4 3 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 12 14 28 22 23 < 8 25 22 22 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 21 40 35 20 18 11 32 27 43

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.2 0.3 0.4 0.4 0.2 0.1 0.2 0.1 0.3 Sulphate 500 252 1.2 16 11 1 < 0.5 2 3 0.6 1.1 Sulphur NV NV 0.44 5.70 2.50 0.67 0.52 0.73 1.25 0.33 0.99

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 < 0.05 0.06 0.06 < 0.05 0.39 0.27 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV NV <0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 0.46 0.12 Hardness (as CaCO3) 500 253 34 43 57 37 30 38 45 39 59 Aluminum 0.1 NV 0.019 0.0067 0.0116 0.0235 0.0188 0.265 0.0922 0.0256 0.0993 Barium 1 NV 0.012 0.0291 0.0236 0.0113 0.0081 0.0161 0.0160 0.0099 0.0165 Beryllium NV NV < 0.005 < 0.00004 < 0.00004 < 0.00004 < 0.00002 0.00002 0.00002 < 0.00002 0.00003 Boron 5 1.26 0.05 0.073 0.065 0.043 0.055 0.070 0.074 0.0506 0.0749 Cadmium 0.005 NV < 0.0001 < 0.00006 < 0.00006 < 0.00006 0.000007 0.00004 0.00001 < 0.000003 < 0.000003 Calcium NV NV 9.84 12.6 16.3 10.8 9.0 11.2 13.0 11.8 18.1 Chromium (Total) 0.05 NV < 0.001 0.0003 0.0006 0.0007 0.0008 0.0010 0.0014 0.001 0.0019 Cobalt NV NV 0.0004 0.00064 0.00049 0.00035 0.00020 0.00044 0.00045 0.000192 0.000371 Copper 1 NV < 0.0008 0.0210 0.0004 0.0005 0.0006 0.0010 0.0012 0.0024 < 0.0005 Iron 0.3 NV 18.4 25.8 22.1 20.3 14.0 24.1 26.4 31.2 21.7 Lead 0.01 NV 0.00050 0.00128 < 0.00002 0.00004 0.00003 0.00015 0.00025 0.00027 0.00003 Magnesium NV NV 2.35 2.77 3.90 2.53 1.74 2.45 3.00 2.37 3.39 Manganese 0.05 0.04 0.887 2.55 2.75 1.03 0.83 0.55 0.80 0.83 1.06 Molybdenum NV NV < 0.0003 0.0001 0.0002 0.0001 0.00033 0.00017 0.00014 0.00007 0.00011 Nickel NV NV < 0.001 0.0009 < 0.0007 < 0.0007 0.0005 0.0009 0.0005 0.0005 0.0012 Potassium NV NV 0.28 0.63 0.90 0.72 1.36 0.99 0.5 0.29 0.76 Phosphorous - Total NV NV < 0.02 < 0.01 < 0.01 0.02 0.02 0.01 < 0.01 < 0.01 < 0.01 Selenium 0.01 NV < 0.005 < 0.003 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Silicon NV NV 2.46 1.40 1.81 1.75 2.05 7.91 6.17 3.36 7.61 Silver NV NV < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00002 Sodium 200 101 6.0 8.9 9.6 10.3 12.1 10.2 12.2 7.3 12.3 Thallium NV NV < 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.00001 < 0.000002 < 0.000002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.0003 < 0.0003 0.0012 0.0001 0.0001 0.0000 < 0.00001 < 0.00001 Titanium NV NV < 0.003 0.0003 0.0006 0.0012 0.0008 0.0034 0.0018 0.0008 0.002 Vanadium NV NV 0.0022 0.00019 0.00041 0.00055 0.00071 0.00335 0.00229 0.00067 0.00274 Zinc 5 NV 0.002 0.0205 0.0123 0.0115 0.011 0.0090 0.0050 0.005 0.007 Conductivity (µS/cm)4 NV NV 106.0 373.0 223.0 125.0 146.2 150.8 262.0 210.0 298.0 pH (Units)4 6.5 - 8.5 NV 6.3 6.7 6.6 7.3 7.16 6.31 6.58 6.85 6.92 Temperature (°C)4 NV NV - 10.2 9.6 10.6 11.8 5.9 11.7 3.5 11.7 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 98-8 Parameter ODWQS2 RUC ³ 19-May-10 30-Sep-10 28-Apr-11 25-Apr-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 27 30 20 27 23 36 35 31 28 27 23 Conductivity (µS/cm) NV NV 194 172 71 110 109 125 120 105 99 91 87 pH (Units) 6.5 - 8.5 NV 6.84 6.75 6.61 7.13 7.04 7.26 7.05 6.95 7.14 6.80 6.89 Solids - Total Dissolved (TDS) 500 266 151 74 83 49 94 83 89 77 69 74 80 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 3.2 2.7 1.6 2.2 4.1 3.2 3.9 5.3 2.6 2.4 3 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 24103< 81428221723323027 Phenols NV NV < 0.002 0.017 0.002 < 0.002 < 0.002 < 0.002 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 37 33 17 17 15 12 12 12 16 12 10

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.1 0.1 0.2 0.3 < 0.1 < 0.1 0.3 < 0.1 0.2 0.2 < 0.1 Sulphate 500 252 0.4 0.3 0.3 1.0 3.3 4.3 1.1 0.8 1.0 2.0 2.0 Sulphur NV NV 0.71 0.42 0.34 0.22 1.04 1.08 0.28 0.48 < 0.1 < 0.1 1.1

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 0.14 0.11 0.08 < 0.06 < 0.06 3.07 0.16 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5< 0.5< 0.50.5------Phosphate - Total (Phos_T) NV NV 0.09 < 0.03 0.51 0.06 - 0.07 < 0.03 0.24 0.16 0.08 0.29 Hardness (as CaCO3) 500 253 46 40 25 19 25 29 26 26 22 23 17 Aluminum 0.1 NV 0.0859 0.0289 0.0170 0.0106 0.0266 0.0241 0.0147 0.101 0.053 0.004 0.003 Barium 1 NV 0.0136 0.009 0.0078 0.0047 0.0052 0.0049 0.0048 0.007 0.0052 0.0042 0.00354 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000016 0.000009 < 0.000007 < 0.000007 Boron 5 1.26 0.103 0.094 0.080 0.056 0.045 0.055 0.041 0.047 0.075 0.041 0.052 Cadmium 0.005 NV < 0.000003 < 0.000003 0.000006 < 0.000003 0.000042 < 0.000003 0.000003 < 0.000003 < 0.000003 < 0.000003 < 0.000003 Calcium NV NV 13.6 12.1 7.71 5.71 7.29 8.88 7.93 7.7 6.54 6.54 4.97 Chromium (Total) 0.05 NV 0.0013 0.0012 0.0007 < 0.0005 < 0.0005 0.0007 < 0.0005 0.00057 0.00025 0.00032 0.00053 Cobalt NV NV 0.00058 0.00018 0.000386 0.00019 0.000191 0.000234 0.00016 0.000579 0.000133 0.000074 0.000191 Copper 1 NV 0.0008 0.0006 < 0.0005 0.001 < 0.0005 0.0011 0.0009 0.00057 0.00047 0.00037 0.00018 Iron 0.3 NV 31.3 14.9 30.4 8.77 5.87 5.28 10.2 11.2 11.5 13.2 3.9 Lead 0.01 NV 0.00003 0.00003 0.00006 0.00003 0.00003 0.00004 < 0.00002 0.00002 0.00005 0.00001 0.00002 Magnesium NV NV 2.98 2.46 1.39 1.23 1.57 1.71 1.58 1.64 1.36 1.52 1.2 Manganese 0.05 0.04 0.742 0.735 0.554 0.591 0.566 0.593 0.64 0.615 0.641 0.632 0.699 Molybdenum NV NV 0.00015 0.00007 0.0003 0.00015 0.00006 0.00118 0.00013 0.00007 0.00019 0.00013 0.00002 Nickel NV NV 0.0015 0.0018 0.0008 0.0006 0.0005 0.0004 0.0004 0.0003 0.0002 0.0002 0.0005 Potassium NV NV 0.474 0.638 0.028 0.457 0.336 0.333 0.337 0.305 0.345 0.383 0.34 Phosphorous - Total NV NV 0.034 0.016 0.197 0.11 < 0.009 < 0.009 < 0.009 < 0.009 < 0.003 < 0.003 < 0.003 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.00004 < 0.00004 < 0.00004 Silicon NV NV 5.74 3.77 4.10 1.31 1.64 1.94 1.23 4.92 2.82 0.85 1.19 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium 200 101 12.8 16.1 5.57 10.2 9.46 11.7 8.85 8.93 7.81 8.68 9.42 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.000005 0.000006 < 0.000005 < 0.000005 Tin NV NV 0.0001 0.00002 0.00007 < 0.00001 < 0.00001 0.00005 0.00007 0.00003 0.00018 < 0.00001 < 0.00001 Titanium NV NV 0.0021 0.0012 0.0005 0.0002 0.0008 0.0006 0.0005 0.0024 0.00114 0.00045 0.00011 Vanadium NV NV 0.00241 0.00072 0.00053 0.00025 0.00036 0.00061 0.00028 0.00191 0.00085 0.0001 0.00008 Zinc 5 NV 0.004 0.007 0.005 0.005 0.004 < 0.002 0.004 0.005 0.004 0.003 0.002 Conductivity (µS/cm)4 NV NV 244.0 197.0 167.2 130 330 130 150 173.8 110 140 110 pH (Units)4 6.5 - 8.5 NV 6.77 6.96 6.8 6.85 7.44 6.81 6.93 6.51 6.69 7.2 7.02 Temperature (°C)4 NV NV 14.8 13.3 4.3 4.1 9.4 7 7.2 12.7 11 5.1 12.9 Dissolved Oxygen 4 NV NV - - - 5 4.64 3.2 2.76 - 4.01 9.78 7.18 Oxidation Reduction Potential (mV) 4 NV NV - - - 146 85 63 -35 -66 -60 23 88 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-9 98-9 98-9 98-9 98-9 98-9 98-9 Parameter ODWQS2 RUC ³ 3-May-05 8-Nov-06 9-May-07 20-May-08 22-Apr-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 4433< 23< 2 Conductivity (µS/cm) NV NV - - - 24 19 28 26 pH (Units) 6.5 - 8.5 NV ---5.99 6.35 6.45 5.83 Solids - Total Dissolved (TDS) 500 266 66 34 < 30 31 43 < 30 < 30 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 2 2 1.3 1.3 1.8 1.4 1.4 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV < 8 13 13 < 8 < 8 < 8 < 8 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 0.4 1 0.4 0.3 < 0.2 < 0.2 0.4

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.2 0.1 0.3 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 5.9 5.3 6.3 8.2 4.5 3.7 3.7 Sulphur NV NV 1.82 1.7 2.23 1.92 1.32 1.34 1.33

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 0.15 < 0.05 0.07 < 0.05 0.2 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5 < 0.5 0.6 < 0.5 < 0.5 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 0.03 < 0.03 0.04 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 7879655 Aluminum 0.1 NV 0.072 0.096 0.17 0.247 0.123 0.141 0.119 Barium 1 NV 0.006 0.00763 0.0125 0.0169 0.0137 0.0168 0.0131 Beryllium NV NV < 0.005 < 0.005 < 0.00004 0.00004 < 0.00002 0.00003 0.00002 Boron 5 1.26 < 0.01 0.02 0.019 0.0309 0.0177 0.01 0.03 Cadmium 0.005 NV < 0.0001 < 0.0001 < 0.00006 0.000053 0.000025 0.000033 0.00003 Calcium NV NV 1.85 2.27 2.19 2.79 1.82 1.82 1.58 Chromium (Total) 0.05 NV < 0.001 < 0.0003 0.0005 < 0.0005 < 0.0005 0.0006 < 0.0005 Cobalt NV NV 0.0006 0.0008 0.00093 0.000832 0.000514 0.00102 0.00071 Copper 1 NV < 0.0008 0.0012 0.0012 0.0076 0.003 0.0018 0.0013 Iron 0.3 NV 0.26 0.5 1.24 0.11 0.13 0.35 0.532 Lead 0.01 NV 0.00080 < 0.001 0.00023 0.00016 0.00025 0.00084 0.00005 Magnesium NV NV 0.523 0.556 0.386 0.527 0.283 0.199 0.224 Manganese 0.05 0.04 0.159 0.187 0.0814 0.0619 0.0615 0.026 0.0619 Molybdenum NV NV < 0.0003 0.00020 < 0.00005 0.00004 0.00001 0.00004 0.00004 Nickel NV NV 0.002 0.0013 0.0014 0.0013 0.0009 0.0022 0.002 Potassium NV NV 0.03 0.43 0.09 0.67 < 0.01 0.016 0.068 Phosphorous - Total NV NV < 0.02 < 0.01 0.03 0.02 0.04 0.024 0.013 Selenium 0.01 NV < 0.005 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Silicon NV NV 2.30 2.56 2.60 2.79 2.02 2.32 2.55 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Sodium 200 101 1.7 3.7 2.3 2.4 0.8 0.6 0.8 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.000002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 0.0008 0.00008 < 0.00001 0.00025 < 0.00001 Titanium NV NV < 0.003 < 0.003 0.0016 0.0006 0.0002 0.0004 0.0007 Vanadium NV NV < 0.0009 < 0.001 0.00023 0.00018 0.00004 0.00019 0.00015 Zinc 5 NV 0.008 0.022 0.0146 0.014 0.014 0.008 0.009 Conductivity (µS/cm)4 NV NV 38.0 20.0 48.0 42.6 20.0 18.5 19.0 pH (Units)4 6.5 - 8.5 NV 6.7 6.1 7.3 6.39 7.47 7.31 6.27 Temperature (°C)4 NV NV - 7.5 14.4 6.1 3.1 13.2 13.4 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-9 98-9 98-9 98-9 98-9 98-9 98-9 98-9 Parameter ODWQS2 RUC ³ 27-Apr-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 15-Apr-15 27-Apr-16

Alkalinity (as CaCO3) 500 252 2< 2173422< 2 Conductivity (µS/cm) NV NV 12 16 110 20 21 15 14 13 pH (Units) 6.5 - 8.5 NV 5.94 5.98 6.74 6.19 6.53 5.97 6.13 5.8 Solids - Total Dissolved (TDS) 500 266 34 < 30 91 37 < 30 < 30 < 30 < 30 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 1.6 2.2 5.7 5.6 1.7 4.3 2.5 2.3 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 8 < 822< 810< 8< 815 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 0.2 0.4 20 0.3 0.5 < 0.2 1 < 1

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.1 < 0.1 0.3 < 0.1 0.3 < 0.1 < 0.1 < 0.1 Sulphate 500 252 3.4 3.8 3.7 3.5 4 3.2 < 1 250 Sulphur NV NV 1.37 1.24 1.51 1.25 1.29 1.08 0.8 0.8

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 0.15 0.11 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5< 0.5< 0.5----- Phosphate - Total (Phos_T) NV NV < 0.03 < 0.03 0.38 - 0.05 < 0.03 - < 0.03 Hardness (as CaCO3) 500 253 542355444 Aluminum 0.1 NV 0.147 0.137 0.0188 0.169 0.163 0.137 0.118 0.152 Barium 1 NV 0.0134 0.0091 0.0054 0.0117 0.0161 0.0128 0.0111 0.0103 Beryllium NV NV 0.00004 0.00003 < 0.00002 0.00004 0.00004 0.00004 0.000036 0.000045 Boron 5 1.26 0.013 0.018 0.058 0.013 0.009 0.01 0.0457 0.016 Cadmium 0.005 NV 0.000047 0.000017 < 0.000003 0.00015 0.000064 0.000032 0.000025 0.000025 Calcium NV NV 1.63 1.42 6.64 1.59 1.54 1.32 1.26 1.15 Chromium (Total) 0.05 NV < 0.0005 < 0.0005 0.0007 < 0.0005 < 0.0005 < 0.0005 0.00014 0.00043 Cobalt NV NV 0.000586 0.00042 0.0004 0.000497 0.000784 0.00037 0.000345 0.000347 Copper 1 NV 0.0018 0.0011 0.0012 0.0013 0.0006 0.0011 0.00162 0.0005 Iron 0.3 NV 0.189 0.381 6.33 0.472 0.188 0.163 0.378 0.217 Lead 0.01 NV 0.00012 0.00012 < 0.00002 0.00012 0.00004 0.00005 0.00002 0.00007 Magnesium NV NV 0.18 0.173 1.5 0.218 0.207 0.153 0.153 0.181 Manganese 0.05 0.04 0.0217 0.0142 0.908 0.0353 0.0313 0.0205 0.0427 0.0228 Molybdenum NV NV 0.00003 0.00008 0.00002 0.00003 0.00054 0.00004 0.00002 0.00007 Nickel NV NV 0.0019 0.0009 0.0007 0.0012 0.0011 0.0007 0.0009 0.0007 Potassium NV NV 0.023 0.079 0.438 0.077 0.029 0.030 0.030 0.024 Phosphorous - Total NV NV 0.063 < 0.03 0.17 0.01 < 0.009 < 0.009 < 0.03 < 0.003 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.00004 Silicon NV NV 2.06 2.39 1.91 2.39 2.46 2.06 1.85 2.01 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 Sodium 200 101 0.8 0.7 11.8 0.9 0.9 0.6 0.5 0.7 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000007 < 0.000005 Tin NV NV 0.00004 < 0.00001 < 0.00001 0.00002 0.00004 0.00006 < 0.00001 < 0.00001 Titanium NV NV 0.0003 0.0007 0.0006 0.0007 0.0004 0.0005 0.00044 0.00039 Vanadium NV NV 0.00016 0.0002 0.00034 0.00019 0.00024 0.0001 0.00021 0.00008 Zinc 5 NV 0.011 0.012 0.002 0.01 0.005 0.007 0.006 0.005 Conductivity (µS/cm)4 NV NV 19.2 10.0 130.0 503.0 20.0 20.0 20.0 20.0 pH (Units)4 6.5 - 8.5 NV 6.2 9.3 8.36 7.51 6.85 6.56 7.7 7.94 Temperature (°C)4 NV NV 7.7 4.7 11.5 10.6 8.8 7.4 - 4.4 Dissolved Oxygen 4 NV NV - 10.94 5.21 8.35 6.71 7.33 8.2 13.68 Oxidation Reduction Potential (mV) 4 NV NV - 148 49 92 100 119 191 -24 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 204 155 190 102 196 230 223 541 303 669 457 473 Conductivity (µS/cm) NV NV -----1820 1580 1890 1630 1670 1390 1340 pH (Units) 6.5 - 8.5 NV -----7.48 7.39 7.81 8.09 7.69 8.05 7.79 Solids - Total Dissolved (TDS) 500 266 494 - 583 797 1570 1360 1200 1450 1330 1260 894 951 Solids - Total Suspended (TSS) NV NV -369------Carbon - Dissolved Organic (DOC) 5 NV 24.4 23.7 21.6 22.6 2.3 41.4 37.1 36.9 34.1 28 21.6 20.7 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 75 60 70 61 109 123 92 114 94 94 40 70 Phenols NV NV 0.003 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 26 28 59 70 140 120 68 72 85 58 32 42

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 1.3 1 1.2 0.7 0.3 < 0.1 0.9 0.2 0.7 < 0.1 < 0.1 < 0.1 Sulphate 500 252 130 110 190 370 730 630 520 510 540 280 180 240 Sulphur NV NV 39.6 32.9 47.0 99.3 211.0 187.0 198.0 168.0 154 75.6 63.4 84.1

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 0.06 0.06 0.11 Nitrogen - Nitrate (NO3) 10 2.5 < 0.05 < 0.05 0.74 1.56 1.08 0.38 3.30 0.13 4.77 0.47 2.85 1.42 Nitrogen - Total Kjeldahl (TKN) NV NV 2.1 1.4 1.8 1.2 0.9 1.0 1.9 0.8 1.3 0.9 < 0.5 0.7 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 267 232 276 410 676 634 697 939 715 552 626 638 Aluminum 0.1 NV 0.039 0.288 0.0174 0.0156 0.0324 0.0466 0.1710 0.0392 0.0198 0.0227 0.0171 0.0205 Barium 1 NV 0.237 0.19 0.231 0.281 0.219 0.164 0.176 0.224 0.169 0.165 0.110 0.130 Beryllium NV NV < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 Boron 5 1.26 2.51 1.77 1.62 1.42 1.99 1.91 3.66 3.61 3.08 3.7 3.55 3.48 Cadmium 0.005 NV < 0.0001 < 0.0001 0.00008 < 0.00006 < 0.00006 0.00001 0.00004 0.00003 < 0.000003 0.000021 0.00001 0.000031 Calcium NV NV 64.7 58.7 67.1 101 169 161 180 252 195 159 187 200 Chromium (Total) 0.05 NV 0.003 0.005 0.0011 0.0008 0.0024 0.0029 0.0017 0.0018 0.0037 0.0018 0.0013 0.0014 Cobalt NV NV 0.0007 0.001 0.00055 0.00074 0.00154 0.00191 0.00109 0.00168 0.000913 0.0013 0.000823 0.00103 Copper 1 NV < 0.0008 < 0.005 0.0026 0.0021 0.0060 0.0047 0.0140 0.0077 0.0103 0.0081 0.0071 0.0068 Iron 0.3 NV 3.04 4.93 0.22 0.97 0.67 1.65 0.05 0.44 0.03 0.06 0.03 0.04 Lead 0.01 NV 0.00050 < 0.0002 0.00100 < 0.00002 0.00018 0.00005 0.00020 0.00024 0.00032 0.00005 0.00007 0.00005 Magnesium NV NV 25.5 20.8 26.3 37.9 61.7 56.1 60.4 75.6 55.4 37.9 38.5 33.7 Manganese 0.05 0.04 0.687 0.899 0.528 0.754 1.240 1.310 0.509 0.467 0.195 0.217 0.034 0.115 Molybdenum NV NV 0.0033 0.0043 0.0045 0.0087 0.0076 0.0116 0.0147 0.0098 0.0079 0.0110 0.0075 0.0097 Nickel NV NV 0.004 0.003 0.0036 0.0049 0.0179 0.0215 0.0157 0.0129 0.0126 0.012 0.0093 0.0123 Potassium NV NV 12.1 15.8 16.1 20.0 32.0 40.6 49.6 58.4 50.6 34.9 36.9 39.9 Phosphorous - Total NV NV < 0.02 0.17 < 0.01 0.01 0.04 0.01 0.04 < 0.01 < 0.01 < 0.01 0.04 0.03 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 0.004 0.001 0.001 0.003 0.002 < 0.001 0.001 Silicon NV NV 2.74 3.15 2.56 2.40 2.87 3.50 2.32 2.42 1.57 2.38 1.75 2.38 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 0.00003 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 Sodium 200 101 25.7 27.5 29.8 62.6 87.3 137.0 127.0 119.0 88.2 59.2 47.1 53.4 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.00001 < 0.000002 0.000014 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0005 0.00016 0.00013 0.00005 0.00003 < 0.00001 0.0001 0.00004 Titanium NV NV < 0.003 < 0.005 0.0007 0.0014 0.0015 0.0028 0.0017 0.0022 0.004 0.0036 0.002 0.0017 Vanadium NV NV 0.0071 0.002 0.00077 0.00057 0.00157 0.00211 0.00213 0.00326 0.00294 0.00501 0.00371 0.00373 Zinc 5 NV 0.004 0.01 0.0095 0.0148 0.0242 0.0070 0.0100 0.0060 0.013 0.008 0.005 0.004 Conductivity (µS/cm)4 NV NV 462.0 31.4 483.0 612.0 987.0 1492.0 1386.0 1871.0 1820.0 1500.0 1325.0 1336.0 pH (Units)4 6.5 - 8.5 NV 7.2 6.79 6.7 6.8 6.8 7.02 7.05 6.73 6.44 6.75 7.27 7.15 Temperature (°C)4 NV NV - - 10.5 8.7 8.8 10.4 9.0 13.4 4.0 11.0 7.8 12.4 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 Parameter ODWQS2 RUC ³ 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 353 460 404 313 349 482 550 545 548 486 366 698 Conductivity (µS/cm) NV NV 1100 1130 1550 1450 1950 1470 1510 1640 1500 1410 1010 1450 pH (Units) 6.5 - 8.5 NV 8 7.51 7.90 7.85 7.89 8.12 7.68 7.92 7.94 8.03 8.09 7.81 Solids - Total Dissolved (TDS) 500 266 797 674 1006 1110 1370 131 997 1130 1070 977 697 1060 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 15.8 22.9 19.7 18.7 27.0 23.6 25.3 17.4 26.3 28.2 13.2 20.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 48 79 54 45 61 64 69 68 68 78 80 58 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.008 < 0.002 < 0.002 Chloride 250 125 29 30 120 200 280 120 85 92 65 62 45 44

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.1 < 0.1 < 0.1 < 0.1 < 0.1 0.2 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 190 54 270 240 260 170 170 260 240 220 160 100 Sulphur NV NV 69 21.7 81.0 89.3 83.0 52.4 55.8 84.2 78.3 81.8 63.6 37.1

Nitrogen - Nitrite (NO2) 1NV0.07 < 0.06 0.13 < 0.06 0.19 < 0.03 0.16 0.12 0.03 0.04 0.06 0.29 Nitrogen - Nitrate (NO3) 10 2.5 2.72 0.53 1.26 0.16 3.19 0.14 4.64 1.21 0.36 0.26 2.12 3.46 Nitrogen - Total Kjeldahl (TKN) NV NV 0.7 13.0 < 0.5 0.5 ------Phosphate - Total (Phos_T) NV NV < 0.03 < 0.03 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 563 419 577 624 599 471 632 615 654 629 579 701 Aluminum 0.1 NV 0.0133 0.0181 0.0172 0.0191 0.0151 0.0182 0.0138 0.0175 0.0233 0.034 0.012 0.015 Barium 1 NV 0.089 0.206 0.143 0.145 0.152 0.126 0.136 0.138 0.157 0.132 0.126 0.163 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000008 0.000008 0.000007 < 0.000007 0.00001 Boron 5 1.26 2.51 2.91 2.68 2.47 2.55 2.44 3.11 3.06 3.12 2.83 2.77 3.39 Cadmium 0.005 NV 0.00003 0.000096 0.000006 0.000007 0.000029 0.000004 0.000015 0.000150 0.000018 0.000021 0.000005 0.000019 Calcium NV NV 179 113 182 197 185 149 197 193 205 196 177 223 Chromium (Total) 0.05 NV 0.0022 0.0044 0.0011 0.0054 0.0012 0.0066 0.0013 0.00078 0.00035 0.00035 0.00051 0.00064 Cobalt NV NV 0.00123 0.00738 0.00060 0.00087 0.00063 0.00072 0.00075 0.00128 0.00052 0.00057 0.00027 0.000582 Copper 1 NV 0.0069 0.0038 0.0054 0.0100 0.0053 0.0136 0.0068 0.0075 0.00606 0.00467 0.00495 0.00643 Iron 0.3 NV 0.02 12.10 0.02 0.18 0.04 0.03 0.01 0.02 0.03 0.08 0.03 0.03 Lead 0.01 NV 0.00004 0.00003 0.00002 < 0.00002 0.00009 0.00003 < 0.00002 0.00002 < 0.00001 0.00007 < 0.00001 < 0.00001 Magnesium NV NV 28.5 33.3 29.6 32.2 31.1 24.1 34.3 32.7 34.7 34.0 33.4 34.9 Manganese 0.05 0.04 0.0804 7.85 0.0727 0.124 0.0833 0.0724 0.0708 0.0795 0.0585 0.0774 0.0339 0.0602 Molybdenum NV NV 0.00518 0.00082 0.00383 0.00636 0.00401 0.00643 0.00398 0.00746 0.00298 0.00428 0.00220 0.00403 Nickel NV NV 0.0057 0.0092 0.0080 0.0074 0.0070 0.0078 0.0084 0.0072 0.0064 0.0061 0.0045 0.0059 Potassium NV NV 0.02 28.30 39.00 38.50 37.20 33.50 33.90 34.50 29.70 30.10 23.00 28.60 Phosphorous - Total NV NV 28.40 0.02 0.05 0.55 < 0.009 < 0.009 < 0.009 0.02 0.08 < 0.003 0.004 0.006 Selenium 0.01 NV < 0.001 0.003 0.001 0.003 0.001 0.003 < 0.001 0.001 < 0.001 0.00027 0.00022 0.00029 Silicon NV NV 1.94 6.21 2.34 2.56 2.31 2.63 2.61 2.84 3.20 3.30 3.34 3.73 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 0.000002 < 0.000002 0.000005 < 0.000002 < 0.000002 Sodium 200 101 34.8 42.8 65.2 83.7 113.0 100.0 71.0 114.0 83.3 73.7 54.8 77.7 Thallium NV NV < 0.0002 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000009 0.000010 0.000029 0.000006 0.000021 Tin NV NV 0.00004 0.00001 0.00003 0.00004 0.00004 0.00008 0.00013 0.00003 0.00013 0.00020 0.00003 < 0.00001 Titanium NV NV 0.0013 0.0012 0.0008 0.0018 0.0009 0.0018 0.0015 0.0011 0.0011 0.0010 0.0007 0.0013 Vanadium NV NV 0.00255 0.00105 0.00164 0.00220 0.00195 0.00416 0.00287 0.00336 0.00241 0.00224 0.00199 0.00388 Zinc 5 NV 0.004 0.005 0.005 0.003 0.004 0.004 < 0.002 0.009 0.004 0.005 < 0.002 0.002 Conductivity (µS/cm)4 NV NV 1143.0 1115.0 1510 530 1885 1510 1740 1716 1470 1340 1110 1370 pH (Units)4 6.5 - 8.5 NV 7.01 6.40 6.63 6.79 6.8 6.83 7.28 7.14 7.08 6.98 7.09 6.78 Temperature (°C)4 NV NV 6.3 13.4 5.7 11.3 8.1 8.7 9.2 11.8 5.9 13.7 5.6 14 Dissolved Oxygen 4 NV NV - - 2.8 7.95 4.44 4.68 3.19 - 4.82 3.5 3.56 7.88 Oxidation Reduction Potential (mV) 4 NV NV - - 7 70 84 65 38 -42 99 -5 -24 124 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 Parameter ODWQS2 RUC ³ 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 10-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) 500 252 13 15 20 14 20 22 30 32 < 2 35 39 34 Conductivity (µS/cm) NV NV -----153253165330296285308 pH (Units) 6.5 - 8.5 NV -----6.95 6.64 7.34 7.21 6.78 7.36 7.01 Solids - Total Dissolved (TDS) 500 266 169 - 220 123 106 109 163 117 269 211 183 197 Solids - Total Suspended (TSS) NV NV -154------Carbon - Dissolved Organic (DOC) 5 NV 2.3 1.9 1.5 2.8 2.8 3.6 2.7 3.6 3.9 2.8 3.1 3.5 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV < 8 < 8 < 8 < 8 < 8 9.0 < 8 11 < 8 11 11 < 8 Phenols NV NV 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 39 41 72.0 33.0 40.0 23.0 52.0 24.0 87 55.0 38.0 50.0

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV < 0.1 0.2 < 0.1 0.1 0.3 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 14 13 13.0 13.0 14.0 12.0 10.0 14.0 12 15.0 23.0 25.0 Sulphur NV NV 5.18 4.19 4.8 4.2 4.89 4.23 4.25 4.92 4.31 6.06 8.24 9.34

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Nitrate (NO3) 10 2.5 0.29 0.34 0.41 0.11 0.23 0.05 0.11 0.24 0.33 0.24 0.28 0.48 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 0.6 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Phosphate - Total (Phos_T) NV NV < 1 < 1 < 1 < 1 < 0.03 < 0.03 < 0.03 < 0.03 0.04 0.1 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 45 50 72 39 53 37 70 41 99 86 87 110 Aluminum 0.1 NV 0.04 0.02 0.04 0.03 0.03 0.04 0.02 0.03 0.0212 0.03 0.02 0.02 Barium 1 NV 0.049 0.05 0.07 0.04 0.04 0.03 0.0317 0.0239 0.0436 0.0441 0.0438 0.0464 Beryllium NV NV < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.0 < 0.00002 < 0.00002 Boron 5 1.26 0.05 0.02 0.03 0.05 0.04 0.02 0.06 0.07 0.0776 0.11 0.10 0.13 Cadmium 0.005 NV < 0.0001 < 0.0001 < 0.00006 < 0.00006 < 0.00006 0.00002 0.000016 0.000010 < 0.000003 0.000014 0.000006 0.000004 Calcium NV NV 16 17.2 25.1 13.7 18.7 12.2 25.2 14.9 35.7 30.6 31.3 39.9 Chromium (Total) 0.05 NV 0.001 0.003 0.0007 0.0004 0.0007 < 0.0005 < 0.0005 0.0009 0.0007 0.0019 0.0014 0.0021 Cobalt NV NV < 0.0003 0.0003 0.0002 0.0001 0.0002 0.0002 0.000114 0.000072 0.000058 0.000143 0.000122 0.000140 Copper 1 NV < 0.0008 < 0.005 0.016 < 0.005 0.001 0.003 0.0037 0.0020 0.0022 0.0010 0.0009 0.0013 Iron 0.3 NV 0.09 0.05 0.09 0.02 0.15 0.19 0.13 0.01 0.02 0.11 0.07 0.03 Lead 0.01 NV 0.00050 < 0.0002 0.00100 < 0.00002 0.00006 0.00005 0.00010 0.00023 0.00022 0.00006 < 0.00002 0.00003 Magnesium NV NV 1.35 1.71 2.2 1.2 1.6 1.6 1.76 0.92 2.27 2.39 2.05 2.50 Manganese 0.05 0.04 0.007 0.019 0.014 0.006 0.021 0.031 0.014 0.005 0.00732 0.011 0.001 0.006 Molybdenum NV NV < 0.0003 < 0.0003 < 0.0003 0.0003 0.0003 0.0002 0.0006 0.0005 0.0007 0.0005 0.0009 0.0007 Nickel NV NV < 0.001 < 0.001 < 0.0007 < 0.0007 < 0.0007 0.0 0.0004 0.0002 0.0006 0.0009 0.0004 0.0019 Potassium NV NV 0.57 1.35 1.1 1.1 1.0 1.1 1.18 0.77 0.79 1.03 0.80 0.88 Phosphorous - Total NV NV < 0.02 0.07 < 0.01 < 0.01 0.02 0.04 0.02 < 0.01 < 0.01 < 0.01 0.02 0.02 Selenium 0.01 NV < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.0 Silicon NV NV 2.89 3.03 2.91 2.30 2.52 3.05 2.24 1.90 2.20 2.94 2.61 3.05 Silver NV NV < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.0 < 0.00001 < 0.00001 Sodium 200 101 15.3 16.8 20.9 17.3 17.1 13.3 17.0 15.2 19.2 16.7 15.9 16.9 Thallium NV NV < 0.0002 < 0.0002 < 0.0001 < 0.0001 < 0.0001 0.000019 0.000003 0.000011 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Tin NV NV < 0.001 < 0.001 < 0.0003 < 0.0003 0.0003 0.00010 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.0001 < 0.00001 Titanium NV NV < 0.003 < 0.005 < 0.005 < 0.005 < 0.0002 0.0005 0.0002 0.0003 0.0004 0.0011 0.0004 0.0005 Vanadium NV NV 0.0016 < 0.002 < 0.002 < 0.002 0.00023 0.00022 0.00015 0.00033 0.00028 0.00049 0.00049 0.00034 Zinc 5 NV 0.002 0.007 0.017 0.009 0.011 0.060 0.008 0.002 0.008 0.007 < 0.001 0.004 Conductivity (µS/cm)4 NV NV 144.0 168.3 219.0 135.0 113.0 128.5 228.0 171.0 330.0 339.0 265.0 301.0 pH (Units)4 6.5 - 8.5 NV 6.6 5.96 6.9 5.9 6.3 7.0 6.6 7.0 6.60 7.0 7.2 7.3 Temperature (°C)4 NV NV - - 10.3 8.9 8.7 4.2 6.8 9.7 4.6 9.2 9.3 10.7 Dissolved Oxygen 4 NV NV ------Oxidation Reduction Potential (mV) 4 NV NV ------Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 98-12 Parameter ODWQS2 RUC ³ 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 47 31 25 14 21 17 33 40 36 33 50 43 Conductivity (µS/cm) NV NV 340 376 410 480 313 458 190 286 467 396 203 194 pH (Units) 6.5 - 8.5 NV 7.30 6.82 6.91 6.53 6.95 6.86 6.96 7.06 7.09 7.20 7.33 7.18 Solids - Total Dissolved (TDS) 500 266 237 226 240 377 257 260 140 197 306 226 111 117 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 5.5 3.5 2.8 3.9 16.4 2.3 4.8 5.1 5.0 3.4 3.9 3.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 35 10 < 8 < 8 10 8 < 8 12 27 18 < 8 8 Phenols NV NV < 0.002 0.0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 50.0 61.0 78 130 66 120 23 53 100 81 20 37

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 0.3 < 0.1 0.4 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate 500 252 29.0 37.0 24 20 17 19 15 18 28 20 13 12 Sulphur NV NV 10.20 12.50 8.1 7.9 6.1 6.4 3.9 5.8 8.9 7.0 4.0 4.3

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 0.51 0.22 0.90 0.47 0.55 0.76 0.15 0.31 0.77 0.51 0.16 0.10 Nitrogen - Total Kjeldahl (TKN) NV NV < 0.5< 0.5< 0.5< 0.5------Phosphate - Total (Phos_T) NV NV < 0.03 < 0.03 < 0.03 0.04 - < 0.03 < 0.03 < 0.03 - < 0.03 < 0.03 < 0.03 Hardness (as CaCO3) 500 253 111 128 128 147 76 99 38 77 108 93 68 62 Aluminum 0.1 NV 0.03 0.04 0.0579 0.0848 0.0358 0.0692 0.0282 0.036 0.0448 0.048 0.043 0.021 Barium 1 NV 0.0524 0.0689 0.1080 0.1340 0.0631 0.1260 0.0301 0.0536 0.0916 0.0751 0.0279 0.0348 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 0.00004 < 0.00002 0.00003 < 0.00002 0.000015 0.000014 0.000014 0.000007 0.000009 Boron 5 1.26 0.17 0.26 0.189 0.188 0.118 0.169 0.118 0.133 0.469 0.295 0.107 0.258 Cadmium 0.005 NV 0.000067 0.000017 0.000051 0.000076 0.000018 0.000071 0.000118 0.000022 0.000018 0.000019 0.000006 0.000012 Calcium NV NV 39.2 42.4 40.2 48.4 25.6 33.1 12.8 25.5 36.5 31.3 23.2 20.3 Chromium (Total) 0.05 NV 0.0009 0.0008 0.0009 0.0014 0.0006 0.0014 0.0005 0.0001 0.0001 0.0001 0.00042 0.00036 Cobalt NV NV 0.000322 0.000220 0.00025 0.00024 0.00016 0.00020 0.00014 0.00057 0.00018 0.000124 0.000149 0.000177 Copper 1 NV 0.0019 0.0013 0.0006 0.0023 0.0006 0.0035 0.0015 0.00109 0.00131 0.00086 0.00114 0.001 Iron 0.3 NV 0.08 0.02 0.138 0.034 0.071 0.024 0.171 0.160 0.055 0.106 0.127 0.154 Lead 0.01 NV 0.00008 < 0.00002 < 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 0.00001 0.00001 0.00004 0.00004 < 0.00001 Magnesium NV NV 3.28 5.46 6.63 6.32 2.62 3.95 1.47 3.12 4.06 3.58 2.34 2.70 Manganese 0.05 0.04 0.011 0.029 0.0325 0.0295 0.0135 0.0161 0.0079 0.0122 0.0124 0.0141 0.0083 0.0169 Molybdenum NV NV 0.0008 0.0003 0.00031 0.00021 0.00030 0.00063 0.00078 0.00061 0.00042 0.00053 0.00122 0.00108 Nickel NV NV 0.0006 0.0013 0.0008 0.0006 0.0004 0.0004 0.0004 0.0002 0.0003 0.0003 0.0002 0.0003 Potassium NV NV 0.01 1.04 1.44 1.48 0.96 1.52 0.70 0.94 1.26 1.08 0.589 0.677 Phosphorous - Total NV NV 0.92 0.01 0.06 0.36 < 0.009 < 0.009 < 0.009 0.01 < 0.03 < 0.003 < 0.003 < 0.003 Selenium 0.01 NV < 0.001 0.0 < 0.001 0.001 < 0.001 0.001 < 0.001 < 0.001 < 0.001 0.00017 0.00012 0.00006 Silicon NV NV 2.75 3.29 3.74 3.67 2.75 2.95 2.18 2.90 2.63 2.86 2.05 2.63 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 0.000005 < 0.000002 < 0.000002 Sodium 200 101 15.2 17.9 17.2 25.1 22.0 39.4 14.3 19.1 44.4 30.3 12.4 13.3 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000009 0.000019 0.000047 < 0.000005 0.000008 Tin NV NV 0.0000 < 0.00001 < 0.00001 < 0.00001 0.00002 0.00006 0.0001 0.00002 < 0.00001 0.00029 < 0.00001 < 0.00001 Titanium NV NV 0.0009 0.0006 0.0003 0.0005 0.0002 0.0004 0.0004 0.00008 0.0002 0.00024 0.00032 0.00018 Vanadium NV NV 0.00092 0.0007 0.00041 0.00066 0.00035 0.00056 0.00034 0.00031 0.00029 0.00036 0.00029 0.00027 Zinc 5 NV 0.011 0.004 0.003 0.002 < 0.002 0.003 < 0.002 0.003 0.002 0.004 0.003 0.003 Conductivity (µS/cm)4 NV NV 333.0 360.1 390 1010 522 490 200 288 470 450 180 170 pH (Units)4 6.5 - 8.5 NV 6.62 5.68 6.64 6.96 6.67 5.86 6.68 6.18 6.39 6.37 6.8 6.79 Temperature (°C)4 NV NV 7.1 10.9 5.5 10.9 6.9 8.9 10.9 10.9 5.8 10.2 5.6 12.9 Dissolved Oxygen 4 NV NV - - 7.04 9.97 9.13 6.89 4.72 - 5.03 6.54 7.54 9.28 Oxidation Reduction Potential (mV) 4 NV NV - - 199 88 113 87 62 22 120 125 29 112 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 3 Summary of Groundwater Quality

MW12-13 MW12-13 MW12-13 MW12-13 MW12-13 MW12-13 MW12-13 MW12-13 MW12-13 Parameter ODWQS2 RUC ³ 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) 500 252 83 127 57 67 56 68 36 47 30 Conductivity (µS/cm) NV NV 230 375 268 290 288 234 154 190 193 pH (Units) 6.5 - 8.5 NV 7.20 7.27 7.23 6.99 7.18 7.12 7.21 6.75 7.05 Solids - Total Dissolved (TDS) 500 266 174 234 160 200 189 146 94 126 120 Solids - Total Suspended (TSS) NV NV ------Carbon - Dissolved Organic (DOC) 5 NV 14.4 20.8 8.6 11.2 10.0 10.8 4.5 4.8 5.0 Oxygen Demand - Biological (BOD) NV NV ------Oxygen Demand - Chemical (COD) NV NV 50 41 33 27 32 21 29 26 25 Phenols NV NV < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride 250 125 7 1830233218162126

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV NV 0.4 0.9 0.5 0.7 0.3 0.2 0.1 0.1 < 0.1 Sulphate 500 252 24 19 19 29 25 28 11 15 20 Sulphur NV NV 9.2 7.1 11.4 8.5 8.0 8.9 3.9 5.8 6.3

Nitrogen - Nitrite (NO2) 1NV< 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrogen - Nitrate (NO3) 10 2.5 0.70 0.12 0.41 0.18 0.22 0.20 0.14 0.12 0.16 Nitrogen - Total Kjeldahl (TKN) NV NV 0.9------Phosphate - Total (Phos_T) NV NV 0.3 - < 0.03 0.07 0.06 - < 0.03 < 0.03 0.12 Hardness (as CaCO3) 500 253 116 161 87 76 89 79 35 53 59 Aluminum 0.1 NV 0.0952 0.1070 0.0506 0.0491 0.0602 0.068 0.066 0.044 0.065 Barium 1 NV 0.0606 0.0623 0.0408 0.0364 0.0388 0.0356 0.0298 0.0285 0.0451 Beryllium NV NV < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000014 0.000015 0.000016 0.000014 0.000024 Boron 5 1.26 0.535 0.599 0.471 0.324 0.385 0.468 0.254 0.296 0.328 Cadmium 0.005 NV 0.000120 0.000062 0.000065 0.000033 0.000042 0.000030 0.000036 0.000018 0.000048 Calcium NV NV 29.3 43.8 22.2 20.5 24.3 20.5 11.2 14.9 15.6 Chromium (Total) 0.05 NV 0.0026 0.0008 0.0016 < 0.0005 0.00036 0.00033 0.00023 0.00055 0.00061 Cobalt NV NV 0.00257 0.00116 0.00271 0.00135 0.00098 0.00062 0.00019 0.00124 0.000261 Copper 1 NV 0.0061 0.0033 0.0026 0.0019 0.00251 0.00128 0.00172 0.00089 0.00186 Iron 0.3 NV 0.101 0.038 0.136 0.142 0.100 0.421 0.052 0.563 0.099 Lead 0.01 NV 0.00004 0.00003 0.00002 0.00002 0.00003 < 0.00001 0.00004 0.00047 0.00002 Magnesium NV NV 10.50 12.10 7.78 6.06 6.80 6.68 1.57 3.84 4.98 Manganese 0.05 0.04 0.3250 0.5020 0.2000 0.2630 0.3040 0.2490 0.1110 0.1800 0.0973 Molybdenum NV NV 0.00052 0.00016 0.00105 0.00012 0.00013 0.00014 0.00019 0.00016 0.00008 Nickel NV NV 0.0028 0.0009 0.0014 0.0008 0.0004 0.0005 0.0003 0.0007 0.0004 Potassium NV NV 2.14 3.95 2.73 2.62 3.57 2.78 1.90 2.13 1.44 Phosphorous - Total NV NV 1.86 0.01 < 0.009 < 0.009 0.01 0.20 < 0.003 < 0.003 < 0.003 Selenium 0.01 NV < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00014 0.00008 0.00009 Silicon NV NV 3.25 2.54 2.70 3.00 2.65 2.57 2.92 2.93 3.14 Silver NV NV < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 0.000003 Sodium 200 101 6.4 9.1 8.1 7.0 13.2 14.8 11.8 11.0 12.9 Thallium NV NV < 0.0002 < 0.0002 < 0.0002 < 0.0002 0.000027 0.000022 0.000027 < 0.000005 0.000012 Tin NV NV 0.00019 0.00007 0.00005 0.00006 0.00002 0.00005 0.00012 < 0.00001 < 0.00001 Titanium NV NV 0.0048 0.0014 0.0009 0.0009 0.0015 0.0017 0.0008 0.00061 0.00247 Vanadium NV NV 0.00063 0.00046 0.00070 0.00025 0.00045 0.00050 0.00034 0.00037 0.00031 Zinc 5 NV 0.013 0.158 0.600 0.392 0.006 0.300 0.006 1.020 0.004 Conductivity (µS/cm)4 NV NV 1430 35.1 290 350 351 240 230 200 210 pH (Units)4 6.5 - 8.5 NV 7.18 6.87 6.2 6.25 6.28 5.91 7.71 6.7 6.46 Temperature (°C)4 NV NV 11.5 6.7 10 5.8 12.3 4.9 11.7 5 13.1 Dissolved Oxygen 4 NV NV 7.81 4.19 3.8 3.77 - 3.8 2.9 4.1 9.67 Oxidation Reduction Potential (mV) 4 NV NV 87 99 129 146 26 191 106 -14 110 Notes: 1. Results expressed in mg/L unless otherwise stated 2. ODWQS means Ontario Drinking Water Quality Standards 3. RUC means Reasonable Use Criteria 4. Results from field analysis 5. Bold text and shading indicates values exceeding ODWQS 6. Bold text indicates values exceeding the RUC 7. NV indicates No Value 8. "-" denotes parameter not analysed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 4 - Summary of Groundwater Quality - VOC

OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 Parameters ODWQS1 20-Nov-03 4-Apr-04 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 Benzene 5 < 1 < 1 < 1 < 1< 1< 1< 1<1 Bromodichloromethane NV < 1 < 1 < 1 < 1< 1< 1< 1<1 Bromo-methane NV < 5 < 5 < 5 < 5< 5< 5< 5<5 Chloro-benzene NV 9.3 11 < 5 < 5 < 5 16 6.4 5.0 Chloro-ethane (Ethyl Chloride) NV < 5 - < 5 < 5 < 5 - < 5 < 5 Chloro-ethene (Vinyl Chloride) 2 < 2 < 2 < 2 < 2< 2< 2< 2< 2 Chloro-methane (Methyl Chloride) NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 Dibromochloro-methane NV < 1 < 1 < 1 < 1< 1< 1< 1<1 1,2-Dibromo-ethane (Ethylene dibromide) NV < 5 < 5 < 5 < 5< 5< 5< 5<5 1,2-Dichloro-benzene 200 < 5 < 1 < 1 < 1< 1< 1< 1<1 1,3-Dichloro-benzene NV < 5 < 1 < 1 < 1< 1< 1< 1< 1 1,4-Dichloro-benzene 5 < 5 < 1 < 1 < 1< 1< 1< 1<1 1,1-Dichloro-ethane NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 1,2-Dichloro-ethane 5 < 5 < 5 < 5 < 5< 5< 5< 5<5 1,1-Dichloro-ethylene NV < 5 < 5 < 5 < 5< 5< 5< 5<5 cis-1,2-Dichloro-ethene NV - - - < 5 - - < 5 < 5 trans-1,2-Dichloro-ethene NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 Dichloro-methane (Methylene Chloride) NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 1,2-Dichloro-propane NV < 5 < 5 < 5 < 5< 5< 5< 5<5 cis-1,3-Dichloro-propene NV < 5 < 5 < 5 < 5< 5< 5< 5<5 trans-1,3-Dichloro-propene NV < 5 < 5 < 5 < 5< 5< 5< 5<5 Ethylbenzene 2.4 < 1 < 1 < 1 < 1< 1< 1< 1<1 Styrene NV < 5 < 5 < 5 < 5< 5< 5< 5<5 1,1,2,2-Tetrachloroethene NV < 5 < 5 < 5 < 5< 5< 5< 5<5 Tetrachloroethene 30 < 5 < 5 < 5 < 5< 5< 5< 5<5 Tetrachloro-methane (Carbon tetrachloride) 5 < 5 < 5 < 5 < 5< 5< 5< 5<5 Toluene 24 < 1 < 1 < 1 < 1< 1< 1< 1<1 Tribromo-methane (Bromoform) NV < 1 < 1 < 1 < 1< 1< 1< 1<1 1,1,1-Trichloroethane NV < 5 - < 5 < 5 < 5 - < 5 < 5 1,1,2-Trichloroethane NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 Trichloroethylene 50 < 5 < 5 < 5 < 5< 5< 5< 5<5 Trichlorofluoromethane NV < 5 < 5 < 5 < 5< 5< 5< 5< 5 Trichloro-methane (Chloroform) NV < 1 < 1 < 1 < 1< 1< 1< 5<1 m-p-xylene NV < 1 < 1 < 1 < 1< 1< 1< 1<1 o-xylene NV < 1 < 1 < 1 < 1< 1< 1< 1<1 Xylene; total 300 < 1 - < 1 < 1 < 1 - < 1 <1 Notes: 1. ODWQS means Ontario Drinking Water Quality Standards. 2. All results are expressed in µg/L 3. NV indicates No Value 4 "-" indicates parameter not analyzed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 4 - Summary of Groundwater Quality - VOC

OV2 OV3 OV3 OV3 98-6 98-6 98-11 98-11 Parameters ODWQS1 25-Apr-12 20-Nov-03 4-Apr-04 25-Apr-12 4-Apr-04 25-Apr-12 4-Apr-04 25-Apr-12 Benzene 5 < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 Bromodichloromethane NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 Bromo-methane NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Chloro-benzene NV 3.7 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Chloro-ethane (Ethyl Chloride) NV < 5 < 5 - < 5 - < 5 - < 5 Chloro-ethene (Vinyl Chloride) 2 < 0.2 < 2 < 2 < 0.2 < 2 < 0.2 < 2 < 0.2 Chloro-methane (Methyl Chloride) NV < 5< 5< 5< 5< 5< 5< 5< 5 Dibromochloro-methane NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 1,2-Dibromo-ethane (Ethylene dibromide) NV < 0.2 < 5 < 5 < 0.2 < 5 < 0.2 < 5 < 0.2 1,2-Dichloro-benzene 200 < 0.5 < 5 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 1,3-Dichloro-benzene NV < 0.5 < 5 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 1,4-Dichloro-benzene 5 < 0.5 < 5 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 1,1-Dichloro-ethane NV 0.68 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 1,2-Dichloro-ethane 5 < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 1,1-Dichloro-ethylene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 cis-1,2-Dichloro-ethene NV < 0.5 - - < 0.5 - < 0.5 - < 0.5 trans-1,2-Dichloro-ethene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Dichloro-methane (Methylene Chloride) NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 1,2-Dichloro-propane NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 cis-1,3-Dichloro-propene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 trans-1,3-Dichloro-propene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Ethylbenzene 2.4 < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 Styrene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 1,1,2,2-Tetrachloroethene NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Tetrachloroethene 30 < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Tetrachloro-methane (Carbon tetrachloride) 5 < 0.2 < 5 < 5 < 0.2 < 5 < 0.2 < 5 < 0.2 Toluene 24 < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 Tribromo-methane (Bromoform) NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 1,1,1-Trichloroethane NV < 0.5 < 5 - < 0.5 - < 0.5 - < 0.5 1,1,2-Trichloroethane NV < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Trichloroethylene 50 < 0.5 < 5 < 5 < 0.5 < 5 < 0.5 < 5 < 0.5 Trichlorofluoromethane NV < 5< 5< 5< 5< 5< 5< 5< 5 Trichloro-methane (Chloroform) NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 m-p-xylene NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 o-xylene NV < 0.5 < 1 < 1 < 0.5 < 1 < 0.5 < 1 < 0.5 Xylene; total 300 < 0.5 < 1 - < 0.5 - < 0.5 - < 0.5 Notes: 1. ODWQS means Ontario Drinking Water Quality Standards. 2. All results are expressed in µg/L 3. NV indicates No Value 4 "-" indicates parameter not analyzed 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 Parameters PWQO2 3-May-05 20-Jul-05 17-Oct-05 31-May-06 14-Aug-06 8-Nov-06 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 12-Jul-10 30-Sep-10 27-Apr-11

Alkalinity (as CaCO3) >25% Decrease 9 4 5 6 30 < 2 3 6 5 < 2 6 5 < 2 < 2 < 2 4 3 <2 < 2 Conductivity (us/cm) NV ------28273029292023162631223 pH (Units) 6.5 - 8.5 ------6.12 6.04 5.35 5.94 5.91 5.52 5.39 5.49 6.19 5.74 5.6 5.84 Solids - Total Dissolved (TDS) NV < 30 80 60 77 222 57 < 30 103 77 < 30 120 77 < 30 83 71 46 160 66 < 30 Solids - Total Suspended (TSS) NV < 2 5 5 28 393 2 < 2 11 2 < 2 4 < 2 < 2 < 2 2 < 2 5 < 2 < 2 Turbidity (NTU) NV 0.39 1.41 2.88 10.40 390 0.34 0.47 1.42 0.75 0.34 1.51 0.54 0.4 0.69 0.78 0.44 2.5 0.34 0.29 Carbon - Total Organic (TOC) NV 7.4 20.8 16.8 22.7 43.1 13.7 11.6 10.2 19.3 11.2 31.0 19.6 7.8 21.5 13 10.1 33.4 14.2 7.5 Oxygen Demand - Biological (BOD) NV 2 4 5 2 113 112124< 2< 2< 4< 4< 23< 2< 2 Oxygen Demand - Chemical (COD) NV 20 65 43 70 151 35 29 82 53 30 82 45 16 58 41 34 84 31 20 Phenols 0.001 < 0.001 0.002 < 0.001 0.003 < 0.001 < 0.001 0.002 0.002 < 0.001 < 0.001 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.002 < 0.001 0.002 Chloride NV 0.8 0.9 1.3 2.3 2.2 1.4 3.0 1.1 1.1 2.9 1.7 3.7 2.8 2 1.2 1.4 0.8 0.8 0.9 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 0.0130 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.1 0.1 0.1 1.4 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Sulphate NV 1.3 < 0.5 11.0 < 0.5 4.2 2.2 0.0 < 0.5 1.1 11.0 < 0.5 1.2 1.6 0.3 0.3 < 0.2 < 0.2 0.2 0.9

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV < 0.05 0.16 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.31 < 0.05 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV < 0.5 0.9 0.9 0.8 2.8 < 0.5 0.5 1.0 0.7 < 0.5 0.6 < 0.5 < 1.0 0.6 < 0.5 < 0.5 0.8 < 0.5 < 0.5 Mercury 0.0002 < 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 < 0.0001 < 0.0001 < 0.0001 Hardness 500 4.44 10.3 18.8 15.2 82.4 6.6 7.4 12.9 10.6 6.2 13.8 10.4 5.6 8.99 5.71 6.7 12 5.6 4.2 Aluminum 0.075 0.080 0.170 0.287 1.070 5.830 0.120 0.116 0.360 0.163 0.121 0.361 0.150 0.069 0.180 0.105 0.092 0.174 0.085 0.052 Arsenic 0.1 < 0.0005 < 0.0005 < 0.0005 0.0008 0.0027 0.0006 0.0003 0.0012 < 0.0002 0.0003 0.0010 0.0002 0.0004 0.0004 0.0003 0.0002 0.001 < 0.0002 < 0.0002 Barium NV 0.0080 0.0140 0.0270 0.0325 0.4380 0.0128 0.0131 0.0253 0.0181 0.0109 0.0287 0.0174 0.0101 0.0171 0.0108 0.0109 0.0281 0.0105 0.00777 Beryllium 0.011 < 0.00005 < 0.00005 < 0.00001 < 0.00001 0.00012 < 0.00004 < 0.00004 < 0.00004 0.00003 < 0.00002 0.00008 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 Boron 0.2 < 0.001 < 0.001 < 0.001 0.006 0.277 0.005 0.005 0.004 0.002 0.003 0.003 0.002 0.0038 0.0047 0.0035 0.0047 0.0046 0.0039 0.0039 Cadmium8 0.0001 < 0.00001 < 0.00001 < 0.00001 0.00022 0.00231 < 0.00006 < 0.00006 < 0.00006 0.00002 0.00002 0.00009 0.00002 0.000037 0.000015 0.000042 0.000005 0.000032 0.000009 0.000007 Calcium NV 1.27 3.14 5.53 5.01 27.20 1.99 2.27 3.95 3.21 1.90 4.26 3.20 1.72 2.82 1.64 2.08 3.61 1.70 1.28 Chromium (total) NV < 0.0002 < 0.0001 < 0.0001 0.0335 0.0084 < 0.0003 0.0004 0.0011 0.0005 < 0.0005 0.0009 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 0.0008 < 0.0005 < 0.0005 Copper8 0.001 < 0.0008 < 0.0008 0.0008 0.0041 0.0196 < 0.0001 0.0004 0.0007 < 0.0005 < 0.0005 0.0005 < 0.0005 0.0021 < 0.0005 0.0006 0.0006 < 0.0005 0.0011 < 0.0005 Iron 0.3 0.31 2.59 0.80 2.14 189.00 0.43 0.59 3.88 1.37 0.46 3.66 0.96 0.33 1.20 0.68 0.50 4.32 0.56 0.28 Lead8 0.001 0.00050 0.00110 0.00040 0.00900 0.09080 0.00061 0.00064 0.00262 0.00110 0.00074 0.00304 0.00094 0.00071 0.00092 0.00074 0.00139 0.00249 0.00055 0.00041 Magnesium NV 0.306 0.589 1.220 0.656 3.529 0.406 0.418 0.736 0.631 0.353 0.779 0.590 0.304 0.471 0.392 0.362 0.716 0.328 0.255 Manganese NV 0.0180 0.0340 0.0450 0.0930 2.7600 0.0173 0.0172 0.0658 0.0341 0.0161 0.0639 0.0256 0.0184 0.0184 0.0403 0.0162 0.08698 0.0113 0.0101 Phosphorous 0.02 < 0.02 0.03 0.04 0.13 1.48 0.01 0.01 0.07 0.02 0.02 0.02 0.01 < 0.01 0.02 0.01 0.024 < 0.009 < 0.009 0.025 Potassium NV 0.07 0.06 0.25 0.63 2.22 0.10 0.04 0.57 0.18 0.02 0.14 0.05 0.09 0.02 0.3 0.031 0.228 0.065 0.071 Selenium 0.1 < 0.005 < 0.005 < 0.005 < 0.003 0.004 < 0.003 < 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 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00003 < 0.00003 < 0.00003 < 0.00003 < 0.00003 0.00002 < 0.00001 0.00007 < 0.00001 0.00006 < 0.00001 < 0.00001 0.00008 0.00001 < 0.00001 < 0.00001 Sodium NV 0.77 0.67 1.26 1.26 2.85 0.75 1.38 0.87 0.84 1.18 0.95 1.26 1.26 1.07 0.69 0.93 0.67 0.64 0.68 Zinc 0.02 < 0.0001 0.0050 0.0050 0.0417 0.1909 0.0078 0.0054 0.0270 0.0110 0.0040 0.0110 0.0080 0.007 0.005 0.01 0.004 0.008 0.004 < 0.002 Conductivity (μs/cm)6 NV 14 29 40.8 216 220 24 13 22 27 22.6 43.9 32.5 20.0 24.1 24.1 17.4 26.9 16.4 14.8 Dissolved Oxygen (DO)6 5 2.57 5.77 6.87 3.51 2.31 7.45 5.86 1.58 5.02 5.64 2.18 5.79 6.59 4.97 3.92 6.33 2.80 3.84 3.83 pH (units) 6 6.5-8.5 6.8 6.6 6.1 7.6 7.4 6.1 5.8 5.6 7.2 6.51 5.59 7.39 6.88 6.17 6.68 6.79 6.36 7.50 7.76 Temperature (°C)6 NV 8.1 20.8 15.2 7.9 19.2 7.3 11.6 18.4 13.2 17.4 19.8 14.6 4.8 22.7 13.1 22.3 27.0 16.9 13.6 Oxidation Reduction Potential (mV) 6 NV------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 Parameters PWQO2 6-Jul-11 4-Oct-11 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 5-Jul-16 11-Oct-16

Alkalinity (as CaCO3) >25% Decrease 83673242443255377 Conductivity (us/cm) NV 34 55 28 28 22 24 38 17 22 23 20 13 - 21 17 - 24 pH (Units) 6.5 - 8.5 6.67 6.02 6.7 6.46 5.83 5.89 6.13 6.12 6.42 6.32 6.03 5.99 6.51 6.48 6.34 6.44 6.73 Solids - Total Dissolved (TDS) NV 86 97 < 30 94 63 71 77 < 30 49 83 31 31 66 31 49 54 46 Solids - Total Suspended (TSS) NV 10 5 < 2 28 6 < 2 7 < 2 < 2 2 < 2 < 2 < 2 14 < 2 26 3 Turbidity (NTU) NV 10.3 0.64 0.43 1.67 2.52 0.5 0.88 0.4 0.49 1.11 0.58 0.54 0.58 2.11 0.71 2.94 2.34 Carbon - Total Organic (TOC) NV 21 16.7 10 23.4 14.5 13.1 14.9 10.7 10 24.9 15.5 8.2 18.3 16.5 9.9 16 17 Oxygen Demand - Biological (BOD) NV 3 < 2 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 Oxygen Demand - Chemical (COD) NV 57 47 19 55 43 34 39 32 25 49 40 22 41 36 26 58 53 Phenols 0.001 < 0.001 < 0.001 < 0.001 0.005 0.002 < 0.001 0.001 < 0.001 0.003 < 0.001 < 0.001 < 0.001 0.001 < 0.001 0.001 0.001 0.002 Chloride NV 0.93.320.712.55.81.31.11.51.5121222 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 <0.005 <0.005 <0.005 0.0145 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.015 <0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.3 0.1 0.1 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate NV 1.3 8.2 1.3 < 0.2 2.2 0.4 1 1 0.7 < 0.2 0.5 < 1 < 1 < 1 < 1 < 1 < 1

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV < 0.05 0.19 < 0.05 < 0.05 < 0.05 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV < 0.5 < 0.5 < 0.5 0.8 < 0.5 < 0.5 0.7 < 0.5 < 0.5 0.5 < 0.5 < 0.5 0.7 < 0.5 < 0.5 < 0.5 0.5 Mercury 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Hardness 500 18.4 19.3 5.8 13.9 9.8 7.82 13.2 5.01 4.4 10.2 6.91 3.4 10.8 9.14 5.7 12.1 11.8 Aluminum 0.075 0.189 0.189 0.092 0.218 0.262 0.115 0.140 0.107 0.057 0.131 0.082 0.051 0.168 0.138 0.073 0.175 0.099 Arsenic 0.1 0.0006 0.0004 < 0.0002 0.0005 0.0003 0.0002 0.0003 < 0.0002 < 0.0002 0.0005 < 0.0002 < 0.0002 0.0002 0.0004 < 0.0002 0.0004 0.0003 Barium NV 0.0183 0.0298 0.009 0.0233 0.0156 0.0126 0.0215 0.0089 0.00643 0.0184 0.0121 0.00602 0.0131 0.0171 0.00756 0.0139 0.0104 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000012 < 0.000007 < 0.000007 < 0.000007 < 0.000007 0.000008 0.000012 0.000009 Boron 0.2 0.0214 0.0373 0.0036 0.0027 0.0051 0.0042 0.0042 0.0033 0.0021 0.0036 0.0016 0.0221 0.0022 0.0023 0.005 0.005 0.017 Cadmium8 0.0001 0.000028 0.000027 0.000012 0.000019 0.000018 0.00002 0.000021 0.000012 0.000004 0.000013 0.000009 0.000014 0.000013 0.000012 0.000011 0.000015 0.000007 Calcium NV 5.81 6.07 1.77 4.37 3.04 2.45 4.26 1.47 1.35 3.18 2.09 0.99 3.53 2.78 1.76 3.72 3.82 Chromium (total) NV 0.0066 < 0.0005 < 0.0005 0.0007 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 0.00082 0.0003 0.00012 0.00047 0.00032 0.00048 0.00081 0.00053 Copper8 0.001 0.0008 < 0.0005 < 0.0005 0.0005 0.0012 < 0.0005 < 0.0005 < 0.0005 < 0.0005 0.00033 0.00675 0.00192 0.0003 0.00097 0.00038 0.00027 0.00018 Iron 0.3 2.72 1.05 0.29 2.46 1.02 0.81 0.89 0.40 0.23 1.79 0.64 0.35 0.85 1.39 0.362 1.50 0.995 Lead8 0.001 0.00143 0.00140 0.00043 0.00124 0.00136 0.00076 0.00157 0.00038 0.00025 0.00091 0.00046 0.00027 0.00053 0.00069 0.00029 0.00065 0.00041 Magnesium NV 0.961 1.000 0.333 0.716 0.536 0.411 0.618 0.327 0.252 0.547 0.408 0.235 0.495 0.535 0.318 0.673 0.559 Manganese NV 0.099 0.0531 0.00935 0.0634 0.0159 0.0272 0.0216 0.00977 0.0078 0.101 0.0106 0.0225 0.0168 0.0208 0.00712 0.0264 0.00905 Phosphorous 0.02 0.053 0.034 < 0.009 0.02 < 0.009 0.01 0.018 0.01 < 0.009 0.016 < 0.009 0.005 0.016 0.013 0.009 0.029 0.011 Potassium NV 0.338 1.03 0.193 0.078 0.452 0.143 0.105 0.09 0.12 0.168 0.125 0.312 0.078 0.417 0.17 0.054 0.238 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00019 0.00008 0.00005 0.00006 0.00008 Silver 0.00001 0.00005 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 0.000002 < 0.000002 < 0.000002 Sodium NV 1.28 1.6 0.92 0.83 0.76 1.22 1.92 0.74 0.78 0.8 0.8 0.55 0.9 0.75 1.03 0.76 0.75 Zinc 0.02 0.007 0.009 0.004 0.008 0.006 0.005 0.004 0.003 0.004 0.008 0.004 0.004 0.005 0.004 0.004 0.006 0.005 Conductivity (μs/cm)6 NV 34.6 582 20 27.5 30 23.5 38.8 20 20 28 74.4 10 30 100 30 60 30 Dissolved Oxygen (DO)6 5 3.66 3.73 10.32 5.03 9.98 5.73 4.53 7.68 6.82 3.36 - 7.83 3.11 5.8 9.09 7.28 8.04 pH (units) 6 6.5-8.5 6.85 6.11 7.32 7.21 8.74 8.4 7.05 5.03 6.56 6.23 6.65 7.37 7.32 8.24 7.6 8.37 6.88 Temperature (°C)6 NV 18.4 10.5 4.6 21.8 11.8 16.7 20.5 5 13 17.5 14.2 4.8 15.6 13 6.8 29 11.8 Oxidation Reduction Potential (mV) 6 NV - - 56 20 4 44 31 59 104 123 -49 -14 115 19 -47 119 73 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 Parameters PWQO2 3-May-05 20-Jul-05 17-Oct-05 31-May-06 14-Aug-06 8-Nov-06 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 14-Jul-10 30-Sep-10 28-Apr-11

Alkalinity (as CaCO3) >25% Decrease < 2 5 2 8 28 2 7 27 16 5 11 13 4 5 5 7 5 2 5 Conductivity (us/cm) NV ------1099236455830302436342522 pH (Units) 6.5 - 8.5 ------6.92 6.75 6.63 6.67 6.82 6.42 6.10 6.38 6.55 6.12 6.14 6.49 Solids - Total Dissolved (TDS) NV 51 94 60 97 149 54 < 30 106 109 49 117 74 51 63 63 49 100 77 < 30 Solids - Total Suspended (TSS) NV < 2 5 2 47 58 4 < 2 1600 5 < 2 2 14 < 2 2 2 < 4 4 < 2 < 2 Turbidity (NTU) NV 0.36 4.90 0.87 7.33 17.70 1.13 0.48 75.40 1.21 0.4 1.8 1.5 0.47 1.41 0.78 1.05 3.06 0.64 0.31 Carbon - Total Organic (TOC) NV 7.5 22.9 16.3 27.0 33.9 13.8 12.3 18.1 25.2 11.2 30.0 21.2 8.4 23.0 13.5 10.4 32.5 14.9 4.8 Oxygen Demand - Biological (BOD) NV 2435111161< 133< 2< 4< 4< 23< 2< 2 Oxygen Demand - Chemical (COD) NV 24 56 42 69 92 34 29 53 56 29 79 48 16 59 37 17 81 39 17 Phenols 0.001 < 0.001 0.001 < 0.001 0.007 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 Chloride NV 0.7 0.7 1.5 3.2 7.4 1.7 4.0 4.7 4.6 3.1 2.4 5.0 3.1 2.1 1.6 1.6 0.9 0.8 1 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.2 0.1 0.3 0.2 0.1 0.2 0.2 0.1 0.1 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 Sulphate NV 1.3 < 0.5 17.0 3.5 < 0.5 3.5 4.3 17.0 13.0 3.2 3.2 5.9 3.3 1.6 1.2 1.7 0.5 0.5 1.4

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV < 0.05 < 0.05 < 0.05 < 0.05 0.21 < 0.05 0.05 < 0.05 0.10 < 0.05 < 0.05 0.07 < 0.05 0.29 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV < 0.5 1.3 0.9 0.8 1.3 < 0.5 1.0 1.3 0.9 < 0.5 0.7 0.6 < 1.0 0.7 < 0.5 < 0.5 0.7 0.5 < 0.5 Mercury 0.0002 < 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 < 0.0001 < 0.0001 < 0.0001 Hardness 500 4.62 11.3 21 18.0 36.6 9.3 15.1 41.9 31.9 11.9 21.4 23.2 10 13.5 9.7 12.5 14.1 7.3 6.6 Aluminum 0.075 0.080 0.350 0.134 0.419 0.082 0.142 0.130 0.417 0.238 0.138 0.358 0.188 0.079 0.201 0.122 0.101 0.196 0.111 0.065 Arsenic 0.1 < 0.0005 < 0.0005 < 0.0005 0.0010 < 0.0005 < 0.0005 0.0003 0.0011 0.0004 0.0003 0.0008 0.0002 < 0.0002 0.0005 0.0003 < 0.0002 0.001 < 0.0002 < 0.0002 Barium NV 0.0080 0.0220 0.0310 0.0375 0.0580 0.0143 0.0167 0.0500 0.0303 0.0131 0.0317 0.0246 0.0109 0.0199 0.0116 0.0132 0.0288 0.0117 0.00839 Beryllium 0.011 < 0.00005 < 0.00005 < 0.00001 < 0.00001 < 0.00001 < 0.00004 < 0.00004 < 0.00004 0.00002 < 0.00002 0.00004 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 Boron 0.2 < 0.001 < 0.001 < 0.001 0.031 0.039 0.016 0.033 0.111 0.120 0.025 0.032 0.045 0.0202 0.0237 0.0118 0.0228 0.0101 0.0103 0.0163 Cadmium8 0.0001 < 0.00001 < 0.00001 < 0.00001 0.00011 < 0.00006 < 0.00006 < 0.00006 0.00007 0.00005 0.00002 0.00005 0.00003 0.000019 0.000018 0.000017 0.000008 0.00003 0.000013 0.000011 Calcium NV 1.33 3.43 6.11 5.37 10.10 2.71 4.41 12.00 8.99 3.55 6.42 6.80 3.04 4.20 2.96 3.78 4.27 2.19 1.96 Chromium (total) NV < 0.0002 0.0001 < 0.0001 0.0007 0.0008 < 0.0003 0.0005 0.0012 0.0007 < 0.0005 0.0009 0.0005 < 0.0005 0.0005 < 0.0005 0.0007 0.0009 < 0.0005 0.0065 Copper8 0.001 < 0.0008 0.0009 0.0009 0.0011 0.0009 0.0001 0.0004 0.0011 0.0006 < 0.0005 0.0009 0.0010 0.0014 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 Iron 0.3 0.32 3.57 0.66 4.20 3.51 0.53 0.63 8.78 2.01 0.52 3.73 1.35 0.34 1.35 0.67 0.67 4.33 0.644 0.272 Lead8 0.001 0.00060 0.00320 0.00040 0.00620 0.00140 0.00090 0.00020 0.00520 0.00200 0.00075 0.00261 0.00108 0.00070 0.00112 0.00066 0.00112 0.00228 0.00071 0.00043 Magnesium NV 0.315 0.670 1.400 1.100 2.780 0.603 0.985 2.920 2.310 0.738 1.300 1.510 0.592 0.736 0.563 0.741 0.843 0.440 0.408 Manganese NV 0.0190 0.0630 0.0920 0.5830 0.2120 0.0254 0.0706 0.6150 0.2550 0.0383 0.1310 0.1220 0.0277 0.0386 0.0410 0.0482 0.11 0.0232 0.0165 Phosphorous 0.02 < 0.02 0.11 0.04 0.07 0.16 0.03 < 0.01 0.17 0.04 0.01 0.03 0.09 < 0.01 0.03 < 0.01 0.034 0.03 < 0.009 < 0.009 Potassium NV 0.07 0.21 0.24 0.87 1.86 0.28 0.48 1.96 2.29 0.28 0.47 0.89 0.30 0.21 0.39 0.272 0.319 0.157 0.195 Selenium 0.1 < 0.005 < 0.005 < 0.005 < 0.003 < 0.003 < 0.003 < 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 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00003 < 0.00003 < 0.00003 < 0.00003 < 0.00003 0.00002 < 0.00001 0.00003 < 0.00001 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 Sodium NV 0.79 0.81 1.40 2.12 4.46 1.16 2.35 5.15 4.16 1.70 1.79 2.55 1.61 1.34 1.02 1.35 0.82 0.74 0.88 Zinc 0.02 < 0.0001 0.0090 0.0150 0.0267 0.0162 0.0084 0.0064 0.0180 0.0170 0.0100 0.0250 0.0200 0.007 0.008 0.012 0.005 0.01 0.005 0.002 Conductivity (μs/cm)6 NV 12 26 63.7 110 135 20 48 88 474 140.2 56.6 91.7 40.0 28.7 25.7 35.3 31.4 21.5 20.1 Dissolved Oxygen (DO)6 5 2.42 7.14 5.89 2.98 1.98 5.90 8.91 1.35 6.34 7.81 7.31 5.84 6.31 6.20 7.17 7.75 3.11 4.65 4.47 pH (units) 6 6.5-8.5 6.3 6.2 5.52 6.9 6.9 7.5 6.4 6 7.52 7.52 6.29 6.75 6.95 7.81 7.42 8.02 6.68 7.57 7.06 Temperature (°C)6 NV 7.5 20.7 14.5 7.8 18.5 5.6 13.3 14.9 12.8 9.1 20.1 12.1 4.3 21 11.7 16.9 27.0 15.0 13.7 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 Parameters PWQO2 6-Jul-11 4-Oct-11 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) >25% Decrease 8351037744967613815 Conductivity (us/cm) NV 32 49 29 38 29 37 45 23 21 32 28 22 - 46 25 45 pH (Units) 6.5 - 8.5 6.59 5.92 6.64 6.81 6.14 6.69 6.66 6.63 6.55 6.85 6.64 6.95 6.64 7.06 6.81 7.03 Solids - Total Dissolved (TDS) NV 94 89 < 30 71 83 83 57 40 37 69 51 49 86 80 49 63 Solids - Total Suspended (TSS) NV 5 < 2 < 2 158 4 2 < 2 2 < 2 3 < 2 3 4 4 2 3 Turbidity (NTU) NV 2.85 1.55 0.53 3.05 1.13 0.89 1.12 0.6 0.47 1.42 0.72 0.53 0.8 2.19 1.11 1.53 Carbon - Total Organic (TOC) NV 20.2 19.6 12 26.5 18 14.2 15.1 10.5 10.8 21.5 15.9 8.2 20.4 22 8.8 18 Oxygen Demand - Biological (BOD) NV < 2 < 2 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 Oxygen Demand - Chemical (COD) NV 55 43 25 24 45 36 40 30 17 47 21 20 42 47 25 51 Phenols 0.001 < 0.001 0.002 0.001 0.007 0.002 < 0.001 < 0.001 < 0.001 0.004 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.002 0.002 Chloride NV 0.9 3.3 2 1 1.1 2.6 4.8 1.4 1.2 1.9 1.7 1 2 2 2 2 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.2 0.1 0.1 0.1 0.1 0.2 0.3 0.3 0.1 0.2 0.1 < 0.1 0.1 < 0.1 < 0.1 < 0.1 Sulphate NV 0.8 6.2 2 0.9 3.3 2.1 1.9 1.7 1.4 0.6 1.2 < 1 < 1 < 10 < 1 < 1

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV < 0.05 0.17 0.1 < 0.05 < 0.05 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 0.24 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV 0.5 < 0.5 < 0.5 0.8 0.5 0.6 0.6 < 0.5 < 0.5 0.7 < 0.5 < 0.5 1 < 0.5 < 0.5 0.5 Mercury 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Hardness 500 15.0 17.4 8.9 19.3 12.2 14.7 17.1 8.6 7.6 13.8 10.6 4.7 11.3 21.4 8.9 20.8 Aluminum 0.075 0.165 0.142 0.094 0.203 0.209 0.125 0.139 0.080 0.064 0.151 0.089 0.057 0.178 0.139 0.082 0.098 Arsenic 0.1 0.0005 0.0004 < 0.0002 0.0005 0.0004 0.0002 0.0003 < 0.0002 < 0.0002 0.0005 < 0.0002 < 0.0002 0.0003 0.0005 < 0.0002 0.0003 Barium NV 0.0178 0.0275 0.00995 0.0255 0.0164 0.0144 0.0214 0.00972 0.00757 0.0194 0.0134 0.00603 0.0134 0.0194 0.00843 0.0147 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000012 < 0.000007 < 0.000007 < 0.000007 0.000007 0.000008 0.000008 Boron 0.2 0.0169 0.0141 0.0153 0.0264 0.0233 0.0352 0.0272 0.02 0.0198 0.0167 0.0121 0.0164 0.0147 0.0472 0.019 0.051 Cadmium8 0.0001 0.000023 0.000017 0.000017 0.000019 0.000019 0.000019 0.000019 0.000008 0.000004 0.000015 0.000013 0.000011 0.000016 0.000017 0.000006 0.000012 Calcium NV 4.64 5.49 2.65 5.98 3.67 4.4 5.32 2.48 2.25 4.23 3.18 1.36 3.47 6.41 2.63 6.22 Chromium (total) NV 0.0005 < 0.0005 < 0.0005 0.0007 < 0.0005 < 0.0005 0.0005 < 0.0005 < 0.0005 0.00057 0.00268 0.00013 0.00047 0.00035 0.00046 0.00052 Copper8 0.001 < 0.0005 < 0.0005 < 0.0005 < 0.0005 0.0009 < 0.0005 0.0007 < 0.0005 < 0.0005 0.00043 0.00615 0.00048 0.00033 0.00047 0.0004 0.00019 Iron 0.3 2.21 0.836 0.315 2.69 0.692 0.813 0.828 0.392 0.24 1.91 0.592 0.346 0.895 1.64 0.421 1.15 Lead8 0.001 0.00115 0.00070 0.00039 0.00110 0.00092 0.00061 0.00162 0.00038 0.00027 0.00111 0.00040 0.00024 0.00050 0.00069 0.00029 0.00033 Magnesium NV 0.842 0.884 0.548 1.070 0.744 0.907 0.922 0.593 0.484 0.774 0.655 0.310 0.637 1.320 0.572 1.29 Manganese NV 0.0867 0.0395 0.0215 0.0799 0.0211 0.0558 0.0431 0.0192 0.016 0.096 0.026 0.0221 0.0271 0.121 0.0183 0.066 Phosphorous 0.02 0.046 0.016 < 0.009 0.032 < 0.009 0.015 0.014 < 0.009 0.013 0.02 0.017 0.007 0.018 0.019 0.007 0.01 Potassium NV 0.307 0.946 0.352 0.326 0.539 0.465 0.242 0.234 0.255 0.289 0.275 0.343 0.152 1.1 0.279 0.612 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00006 0.00009 < 0.00004 0.0001 Silver 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 0.000006 0.000002 < 0.000002 Sodium NV 0.96 1.54 1.15 1.24 0.98 1.59 2.07 0.95 0.96 1 1 0.64 1 1.45 1.21 1.44 Zinc 0.02 0.008 0.008 0.005 0.006 0.006 0.006 0.006 0.004 0.004 0.01 0.004 0.005 0.006 0.006 0.003 0.007 Conductivity (μs/cm)6 NV 38 20.1 20 39.1 70 111 48.7 30 30 55 132.6 70 30 80 40 50 Dissolved Oxygen (DO)6 5 3.14 4.47 10.23 5.65 7.94 9.19 7.55 8.44 7.97 6.6 - 7.05 5.78 6.65 8.72 8.29 pH (units) 6 6.5-8.5 6.78 7.06 7.76 7.04 7.4 7.71 7.52 7.75 8.26 6.82 7.71 7.86 8.48 8.25 7.9 7.2 Temperature (°C)6 NV 18.7 13.7 6.9 19.7 12.1 15.9 18.2 5.9 11.6 16.9 13.4 39 16 12.7 3.9 12.4 Oxidation Reduction Potential (mV) 6 NV - - 44 34 55 2 54 22 15 108 -75 -101 -7 -46 -81 73 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 Parameters PWQO2 3-May-05 20-Jul-05 17-Oct-05 31-May-06 14-Aug-06 8-Nov-06 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 14-Jul-10 30-Sep-10 28-Apr-11

Alkalinity (as CaCO3) >25% Decrease 1252374355651264855655 Conductivity (us/cm) NV ------16263540192939253036264 pH (Units) 6.5 - 8.5 ------6.46 6.28 6.23 6.58 6.53 6.48 6.55 6.42 6.41 6.55 6.61 6.5 Solids - Total Dissolved (TDS) NV 57 54 54 86 91 49 < 30 40 74 46 109 43 37 80 63 49 140 46 31 Solids - Total Suspended (TSS) NV < 2 3 15 2 36 3 < 2 4 43 < 2 7 8 < 2 5 3 < 2 6 4 2 Turbidity (NTU) NV 0.49 1.57 23.80 1.50 10.40 0.67 1.22 0.61 2.30 0.62 1.89 1.42 0.37 1.64 1.32 1.15 1.86 1.21 1.34 Carbon - Total Organic (TOC) NV 7.9 23.6 11.4 19.8 27.8 14.2 11.8 25.6 15.3 11.0 28.0 9.5 7.9 20.6 11.7 11.1 27.1 8.4 6.7 Oxygen Demand - Biological (BOD) NV 25436< 12219< 123< 2< 4< 4< 223< 2 Oxygen Demand - Chemical (COD) NV 17 59 36 63 68 41 34 24 44 30 72 29 15 56 36 34 61 29 24 Phenols 0.001 < 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 0.002 0.002 < 0.001 0.001 Chloride NV 1.5 1.6 0.9 2.2 0.9 1.3 1.6 < 0.2 0.8 3.1 2.4 1.5 2.9 2.4 1.4 1.2 1.1 0.4 0.9 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.1 2.4 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.7 Sulphate NV 3.7 1.6 4.0 2.0 < 0.5 2.2 2.1 1.1 1.2 3.1 1.3 1.4 3.3 2.0 1.7 1.1 0.3 0.7 1.8

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV < 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 0.56 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV < 0.5 1.0 3.2 0.8 1.0 < 0.5 0.7 0.6 0.8 < 0.5 0.8 0.5 < 1.0 0.8 < 0.5 < 0.5 0.7 0.6 < 0.5 Mercury 0.0002 < 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 < 0.0001 < 0.0001 < 0.0001 Hardness 500 8.19 11.9 16.5 14.1 12.3 7.96 8.73 6.39 10.00 11.80 18.70 7.40 10.3 22.0 9.2 9.9 12.6 7.1 7.3 Aluminum 0.075 0.110 0.250 0.114 0.374 0.381 0.138 0.163 0.113 0.139 0.129 0.300 0.085 0.081 0.218 0.144 0.139 0.200 0.078 0.084 Arsenic 0.1 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 0.0006 0.0004 0.0003 0.0003 0.0003 0.0009 < 0.0002 < 0.0002 0.0005 < 0.0002 < 0.0002 0.0007 0.0002 < 0.0002 Barium NV 0.0100 0.0110 0.0230 0.0185 0.0226 0.0135 0.0140 0.0103 0.0174 0.0129 0.0328 0.0094 0.0111 0.0242 0.0106 0.0113 0.0199 0.0075 0.00957 Beryllium 0.011 < 0.00005 < 0.00005 < 0.00001 < 0.00001 < 0.00001 < 0.00004 < 0.00004 < 0.00004 < 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 Boron 0.2 0.020 0.020 0.030 0.023 < 0.002 0.003 0.018 0.008 0.009 0.024 0.026 0.015 0.0196 0.0336 0.0180 0.0168 0.0139 0.0055 0.0131 Cadmium8 0.0001 < 0.00001 < 0.00001 < 0.00001 < 0.00006 < 0.00006 < 0.00006 < 0.00006 < 0.00006 0.00002 0.00002 0.00003 0.00002 0.00001 0.000016 0.000006 0.000012 0.000012 0.000004 0.000014 Calcium NV 2.26 3.55 4.93 4.31 3.76 2.50 2.53 1.98 2.84 3.54 5.61 2.15 3.14 7.43 2.75 3.03 3.89 2.23 2.16 Chromium (total) NV < 0.0002 < 0.0001 < 0.0001 0.0011 0.0004 < 0.0003 0.0006 0.0005 < 0.0005 < 0.0005 0.0009 < 0.0005 < 0.0005 0.0005 < 0.0005 0.0007 0.0008 < 0.0005 < 0.0005 Copper8 0.001 < 0.0008 < 0.0008 < 0.0008 0.0011 0.0008 0.0016 0.0006 0.0007 < 0.0005 < 0.0005 0.0008 < 0.0005 0.0007 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 < 0.0005 Iron 0.3 0.36 2.60 7.24 1.08 2.17 0.46 0.86 0.98 1.85 0.51 4.33 0.66 0.36 1.59 0.64 0.614 2.64 0.65 0.754 Lead8 0.001 0.00060 0.00070 0.00050 0.00100 0.00232 0.00108 0.00016 0.00173 0.00084 0.00069 0.00148 0.00039 0.00068 0.00055 0.00058 0.00030 0.00088 0.00023 0.00046 Magnesium NV 0.619 0.745 1.020 0.808 0.696 0.418 0.584 0.350 0.711 0.733 1.130 0.504 0.608 0.847 0.561 0.558 0.704 0.379 0.457 Manganese NV 0.0260 0.0290 0.0730 0.0260 0.0370 0.0196 0.0179 0.0177 0.0424 0.0355 0.1670 0.0228 0.0269 0.0556 0.0196 0.0179 0.07516 0.0131 0.0205 Phosphorous 0.02 < 0.02 0.04 0.10 0.04 0.07 0.02 0.02 0.03 0.05 0.01 0.05 0.03 < 0.01 0.05 < 0.01 0.025 0.026 0.011 0.014 Potassium NV 0.39 0.44 0.86 0.30 0.13 0.11 0.24 0.03 0.82 0.29 0.37 0.25 0.31 0.48 0.37 0.175 0.339 0.176 0.182 Selenium 0.1 < 0.005 < 0.005 < 0.005 < 0.003 < 0.003 < 0.003 < 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 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00003 < 0.00003 < 0.00003 < 0.00003 < 0.00003 0.00003 < 0.00001 0.00002 < 0.00001 < 0.00001 0.00001 < 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 Sodium NV 1.64 1.59 1.42 1.71 0.69 0.75 1.33 0.45 0.64 1.70 1.60 0.69 1.67 1.47 0.98 1.13 0.91 0.38 0.91 Zinc 0.02 < 0.0001 0.0030 0.0030 0.0097 0.0122 0.0084 0.0082 0.0029 0.0230 0.0100 0.0180 0.0060 0.006 0.007 0.008 0.005 0.007 0.004 0.002 Conductivity (μs/cm)6 NV 21 18 63 165 165 17 15 111 29.5 34.0 81.9 31.3 40.0 40.0 25.8 34.5 27.4 14.2 22 Dissolved Oxygen (DO)6 5 2.38 7.31 6.7 4.23 3.65 4.81 7.26 1.04 6.6 9.10 4.22 7.69 7.18 4.45 8.25 7.24 3.00 4.54 4.69 pH (units) 6 6.5-8.5 6.6 6.2 6.6 7.3 7.1 5.7 5.7 5.6 7.24 7.24 5.85 7.99 6.84 7.01 7.13 6.84 6.18 7.23 6.88 Temperature (°C)6 NV 8.2 21 16.2 7.7 18.9 6 14.9 17.1 13.8 16.2 19.4 15.8 5.2 24.8 14.9 23.3 29.5 17.4 16.9 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 Parameters PWQO2 6-Jul-11 4-Oct-11 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 5-Jul-16 11-Oct-16

Alkalinity (as CaCO3) >25% Decrease 9655476115653810645 Conductivity (us/cm) NV 36 48 28 22 29 35 48 36 21 28 25 16 - 40 24 - 20 pH (Units) 6.5 - 8.5 6.83 6.43 6.5 6.55 6.14 6.46 6.53 7.15 6.6 6.7 6.65 6.35 6.66 6.91 6.95 5.94 6.39 Solids - Total Dissolved (TDS) NV 91 71 < 30 71 74 100 83 46 46 74 49 60 71 60 34 46 66 Solids - Total Suspended (TSS) NV 13< 2< 26< 2830< 2< 22< 2< 2< 22256 Turbidity (NTU) NV 3.46 1.86 0.82 1.87 0.48 1.82 1.59 0.31 0.56 1.19 0.55 0.52 1.13 2.07 1.23 1.96 2.81 Carbon - Total Organic (TOC) NV 20.4 12.9 10.6 16.8 17 18.6 14.9 12.4 11.4 21.1 11.4 8.9 17.9 12.5 9.4 12 14 Oxygen Demand - Biological (BOD) NV < 2 < 2 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 Oxygen Demand - Chemical (COD) NV 533420< 844524028204440244243275337 Phenols 0.001 < 0.001 0.002 < 0.001 0.008 0.002 < 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.001 0.001 0.002 Chloride NV 0.9 2.2 1.7 < 0.2 1.1 2 3.6 1.4 1 1.7 1.6 1 2 1 2 < 1 1 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.4 0.1 0.2 0.1 < 0.1 < 0.1 0.1 < 0.1 < 0.1 < 0.1 Sulphate NV 1.3 5.6 3.2 0.7 3.8 1.8 2.8 1.6 1.5 0.7 1.4 < 1 < 1 5 < 1 < 1 < 1

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV 0.05 2.04 < 0.05 < 0.05 < 0.05 0.07 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV 0.5 < 0.5 < 0.5 0.9 < 0.5 1 0.7 < 0.5 < 0.5 0.6 < 0.5 < 0.5 0.6 0.6 < 0.5 < 0.5 0.6 Mercury 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 0.00002 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Hardness 500 16.1 15.2 9.6 10.8 12.2 15.1 17.1 7.11 7.4 12.7 9.73 4.8 11.1 15.9 8.9 6.8 8.91 Aluminum 0.075 0.163 0.111 0.100 0.249 0.193 0.189 0.200 0.092 0.076 0.152 0.089 0.064 0.177 0.139 0.084 0.098 0.093 Arsenic 0.1 0.0004 0.0003 < 0.0002 0.0004 0.0003 0.0005 0.0003 < 0.0002 0.0002 0.0004 < 0.0002 < 0.0002 0.0002 0.0004 < 0.0002 0.0004 0.0003 Barium NV 0.0182 0.0197 0.011 0.0169 0.0175 0.0204 0.0257 0.00974 0.00784 0.0176 0.012 0.00623 0.0131 0.0188 0.00848 0.0102 0.01 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000011 < 0.000007 < 0.000007 < 0.000007 0.000007 0.000013 0.000011 0.000012 Boron 0.2 0.0246 0.0404 0.0135 0.0141 0.0201 0.0228 0.0288 0.0136 0.017 0.0156 0.0124 0.0145 0.0134 0.0224 0.019 0.006 0.011 Cadmium8 0.0001 0.000021 0.000009 0.000017 0.000023 0.000025 0.000048 0.000028 0.000013 0.000007 0.000013 0.000011 0.00001 0.000018 0.000017 0.000013 0.00002 0.000008 Calcium NV 4.93 4.44 2.85 3.4 3.7 4.6 5.17 2.05 2.2 3.87 2.91 1.4 3.43 4.75 2.64 2.07 2.75 Chromium (total) NV < 0.0005 < 0.0005 < 0.0005 0.0007 < 0.0005 0.0005 0.0007 < 0.0005 < 0.0005 0.00155 0.00041 0.00013 0.0005 0.00122 0.00045 0.00051 0.00049 Copper8 0.001 < 0.0005 < 0.0005 < 0.0005 0.0008 0.0012 0.0006 0.001 < 0.0005 < 0.0005 0.00042 0.0056 0.00036 0.00036 0.0005 0.00018 0.00037 0.00048 Iron 0.3 2.26 1.15 0.278 3.46 0.532 2.33 1.39 0.354 0.24 1.34 0.454 0.312 0.839 1.03 0.311 2.62 1.18 Lead8 0.001 0.00116 0.00044 0.00024 0.00077 0.00091 0.00102 0.00254 0.00038 0.00021 0.00061 0.00030 0.00025 0.00038 0.00053 0.00020 0.00034 0.00018 Magnesium NV 0.933 0.990 0.591 0.560 0.715 0.868 1.020 0.482 0.470 0.730 0.597 0.309 0.621 0.978 0.565 0.401 0.496 Manganese NV 0.107 0.0492 0.0147 0.0283 0.00711 0.0518 0.048 0.0125 0.00874 0.0162 0.00575 0.0186 0.0315 0.0662 0.0146 0.0523 0.0192 Phosphorous 0.02 0.050 0.034 0.009 0.028 < 0.009 0.033 0.166 < 0.009 0.012 0.014 0.016 0.006 0.018 0.036 0.016 0.034 0.042 Potassium NV 0.386 0.832 0.314 0.066 0.39 0.407 0.314 0.266 0.248 0.211 0.211 0.343 0.084 0.679 0.284 0.16 0.431 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.00004 0.00007 0.00006 0.00008 0.00005 Silver 0.00001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 0.000004 < 0.000002 < 0.000002 < 0.000002 Sodium NV 1.07 1.45 1.16 0.62 0.96 1.43 1.92 0.85 0.95 1.03 0.98 0.64 0.97 1.28 1.17 0.35 0.64 Zinc 0.02 0.006 0.006 0.006 0.006 0.007 0.013 0.01 0.003 0.005 0.009 0.004 0.003 0.005 0.007 0.004 0.007 0.007 Conductivity (μs/cm)6 NV 35.4 42.1 20 35.4 30 150.2 46 20 20 58 62 10 30 120 40 20 20 Dissolved Oxygen (DO)6 5 3.22 3.69 10.89 5.35 7.52 7.15 8.35 8.87 9.5 7.24 - 9.27 6.05 5.8 11.45 6.51 5.26 pH (units) 6 6.5-8.5 6.43 5.63 7.7 7.43 7.36 8.95 7.85 5.18 6.61 6.95 7.51 7.5 7.21 7.73 7.95 7.87 7.15 Temperature (°C)6 NV 18.6 12.3 7.5 20.1 12.2 18.9 19.4 5.4 15.8 17.6 15.1 5.7 16 12.4 6.8 26.9 12 Oxidation Reduction Potential (mV) 6 NV - - 41 -18 27 55 26 61 100 130 -48 -23 108 32 -47 103 111 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 Parameters PWQO2 3-May-05 20-Jul-05 17-Oct-05 31-May-06 14-Aug-06 8-Nov-06 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 14-Jul-10 30-Sep-10 28-Apr-11

Alkalinity (as CaCO3) >25% Decrease 1115138947911< 213204757433 Conductivity (us/cm) NV ------315236416131321830252414 pH (Units) 6.5 - 8.5 ------6.91 6.77 6.20 6.76 7.34 6.47 6.51 6.45 6.59 6.36 6.32 6.35 Solids - Total Dissolved (TDS) NV 49 66 46 100 60 46 < 30 51 80 43 117 60 63 66 77 57 54 31 < 30 Solids - Total Suspended (TSS) NV < 2 7 5 84 < 6 2 4 5 4 < 2 13 2 < 2 5 5 5 12 3 2 Turbidity (NTU) NV 0.76 6.99 2.80 9.60 2.70 0.71 1.66 3.44 2.81 1.19 6.10 1.86 0.81 2.11 2.50 2.68 2.69 1.32 0.92 Carbon - Total Organic (TOC) NV 4.8 17.1 11.2 18.1 12.5 8.2 10.8 10.6 12.5 8.0 22.8 13.6 6.9 14.7 9.7 8.5 12.8 11.8 5.6 Oxygen Demand - Biological (BOD) NV 1557 2< 1< 12312< 2< 2< 4< 4< 242< 2 Oxygen Demand - Chemical (COD) NV 19 41 28 78 36 26 27 22 41 27 69 36 15 43 38 22 36 33 21 Phenols 0.001 < 0.001 0.001 < 0.001 0.003 < 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 Chloride NV 1.0 1.6 2.4 1.0 1.2 1.2 3.3 1.5 2.8 2.7 2.6 3.9 2.5 2.3 0.5 0.5 0.6 0.8 0.8 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.2 0.1 0.1 0.1 0.1 0.4 0.1 0.3 0.1 0.4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Sulphate NV 2.9 0.7 3.1 1.1 < 0.5 2.7 2.8 1.4 4.5 4.1 < 0.5 3.7 4.5 1.9 0.6 0.6 0.7 0.8 2

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.06 < 0.05 < 0.05 0.11 < 0.05 < 0.05 0.10 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV < 0.5 1.1 0.9 1.1 0.8 < 0.5 0.7 0.8 1.1 0.5 1.3 0.6 < 1.0 0.7 0.7 0.6 0.6 < 0.5 < 0.5 Mercury 0.0002 < 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 < 0.0001 < 0.0001 < 0.0001 Hardness 500 5.69 20.3 16.4 15.3 12 8.03 12 12.1 17.8 10.2 16.8 13.9 9.9 13.2 5.4 7.4 0.2 6.4 5.6 Aluminum 0.075 0.100 0.170 0.103 0.445 0.086 0.141 0.179 0.196 0.142 0.141 0.533 0.149 0.112 0.175 0.144 0.134 0.137 0.117 0.081 Arsenic 0.1 < 0.0005 < 0.0005 < 0.0005 0.0017 < 0.0005 < 0.0005 0.0004 0.0003 0.0002 0.0003 0.0017 0.0003 0.0007 0.0005 0.0002 0.0003 0.0005 < 0.0002 < 0.0002 Barium NV 0.0100 0.0260 0.0210 0.0382 0.0055 0.0125 0.0193 0.0194 0.0270 0.0135 0.0437 0.0182 0.0129 0.0186 0.0101 0.0138 0.0153 0.011 0.00882 Beryllium 0.011 < 0.00005 < 0.00005 < 0.00001 < 0.00001 < 0.00001 < 0.00004 < 0.00004 < 0.00004 0.00002 < 0.00002 0.00005 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00004 < 0.00002 < 0.00002 < 0.00002 Boron 0.2 0.010 0.020 0.020 0.022 < 0.002 0.006 0.033 0.022 0.034 0.032 0.029 0.044 0.024 0.0368 0.0066 0.0063 0.0095 0.011 0.0117 Cadmium8 0.0001 < 0.00001 < 0.00001 < 0.00001 < 0.00006 < 0.00006 < 0.00006 < 0.00006 < 0.00006 0.00001 0.00002 0.00004 0.00002 0.00001 0.000015 0.000019 0.000045 0.000008 0.000012 0.000013 Calcium NV 1.55 6.58 4.96 4.65 3.77 2.44 3.42 3.55 5.16 2.86 4.93 3.86 2.85 3.76 1.52 2.21 < 0.02 1.84 1.62 Chromium (total) NV < 0.0002 < 0.0001 < 0.0001 0.0007 < 0.0003 < 0.0003 0.0006 0.0008 < 0.0005 < 0.0005 0.001 < 0.0005 < 0.0005 < 0.0005 0.0009 0.0006 0.0006 < 0.0005 < 0.0005 Copper8 0.001 < 0.0008 < 0.0008 < 0.0008 0.0011 0.0002 0.0003 0.0007 0.0007 < 0.0005 < 0.0005 0.0010 < 0.0005 0.0006 < 0.0005 < 0.0005 0.0009 < 0.0005 < 0.0005 < 0.0005 Iron 0.3 0.35 7.38 1.57 11.30 2.80 0.43 1.33 2.28 2.13 0.88 11.50 1.34 0.50 2.31 1.98 2.63 0.04 1.03 0.33 Lead8 0.001 0.00030 0.00070 0.00020 0.00180 0.00075 0.00020 < 0.00002 0.00088 0.00062 0.00049 0.00171 0.00054 0.00055 0.00052 0.00046 0.00034 0.00050 0.00038 0.00033 Magnesium NV 0.440 0.938 0.987 0.897 0.627 0.474 0.830 0.777 1.200 0.736 1.080 1.040 0.677 0.932 0.384 0.465 0.036 0.447 0.379 Manganese NV 0.0170 0.2310 0.0300 0.7340 0.0200 0.0160 0.0674 0.0659 0.1390 0.0329 0.7030 0.0666 0.0261 0.0608 0.0432 0.1830 0.06473 0.0161 0.015 Phosphorous 0.02 < 0.02 0.06 0.04 0.09 0.02 0.05 0.03 0.05 0.04 0.03 0.10 0.02 0.02 0.04 0.03 0.04 0.01 0.012 0.055 Potassium NV 0.28 0.82 1.18 0.57 0.08 0.31 0.57 0.26 0.96 0.32 0.91 0.42 0.37 0.19 0.42 0.316 < 0.005 0.397 0.261 Selenium 0.1 < 0.005 < 0.005 < 0.005 < 0.003 < 0.003 < 0.003 < 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 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00003 < 0.00003 < 0.00003 < 0.00003 < 0.00003 0.00002 < 0.00001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 Sodium NV 1.09 1.51 1.86 0.92 1.10 0.87 2.09 1.30 1.97 1.70 1.63 2.47 2.15 1.70 0.47 0.63 0.03 0.68 0.77 Zinc 0.02 < 0.0001 0.0050 0.0020 0.0112 0.0008 0.0065 0.0099 0.0037 0.0070 0.0050 0.0120 0.0070 0.0060 0.005 0.008 0.006 0.04 0.004 0.003 Conductivity (μs/cm)6 NV 32 42 77.1 239 210 15 34 26 48.6 44.9 56.2 66.4 30 33.9 35.6 19.4 26.9 20.4 22.1 Dissolved Oxygen (DO)6 5 2.48 6.09 5.83 2.59 2.27 7.51 4.87 3.82 6.83 8.72 2.52 5.96 7.04 4.66 7.01 6.39 2.80 2.99 4.18 pH (units) 6 6.5-8.5 6.5 6.3 7.12 6.9 7.2 6.8 6.6 6.9 7.04 7.27 6.27 7.87 6.99 6.85 8 6.61 6.36 6.95 6.39 Temperature (°C)6 NV 9 21.1 15.2 7.7 21.1 6.5 15.3 16.2 13.4 14.7 20.3 15.9 4.9 19.7 11.1 20.1 27.0 14.1 13.4 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 5 - Summary of Surface Water Quality Data

SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 SW4 Parameters PWQO2 6-Jul-11 4-Oct-11 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) >25% Decrease 9656455102767461169 Conductivity (us/cm) NV 42 48 37 24 34 26 32 32 17 25 34 17 - 38 26 36 pH (Units) 6.5 - 8.5 6.62 6.43 6.56 6.73 6.3 6.59 6.54 7.3 6.4 6.87 6.89 6.63 6.65 7.19 7.04 6.85 Solids - Total Dissolved (TDS) NV 83 71 < 30 51 60 60 94 46 46 46 < 30 54 60 71 34 60 Solids - Total Suspended (TSS) NV 9< 2< 28< 232< 233< 2< 22343 Turbidity (NTU) NV 4.40 1.86 1.01 4.33 1.34 1.83 1.71 1.03 1.06 2.13 1.35 0.52 1.62 3.16 2.43 2.99 Carbon - Total Organic (TOC) NV 17.1 12.9 10.2 10.5 12.5 11 15.1 9.3 7.7 13.7 12.9 9.5 15.3 13.6 7.4 14 Oxygen Demand - Biological (BOD) NV < 2 < 2 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 < 4 Oxygen Demand - Chemical (COD) NV 42 34 24 38 33 34 39 24 18 30 31 30 37 34 < 8 38 Phenols 0.001 < 0.001 0.002 < 0.001 0.007 0.002 < 0.001 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 0.001 < 0.001 0.001 0.002 Chloride NV 2.22.22.80.31.41.42.60.90.81.32.212222 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.006 <0.005 <0.005 Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 0.2 0.1 < 0.1 < 0.1 0.1 < 0.1 < 0.1 Sulphate NV 1 5.6 4.3 0.7 6.2 2 2.2 1.5 1.6 0.7 2.3 < 1 < 1 1 1 < 1

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV < 0.05 2.04 0.1 < 0.05 < 0.05 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV 0.7 < 0.5 < 0.5 0.8 < 0.5 0.8 0.6 < 0.5 < 0.5 0.7 < 0.5 < 0.5 0.8 0.6 < 0.5 0.5 Mercury 0.0002 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Hardness 500 16.2 15.2 11.3 9.3 13.9 8.82 12.5 6.28 5.3 9.3 11.6 4.8 10.7 15 9.4 15.3 Aluminum 0.075 0.285 0.111 0.111 0.255 0.174 0.159 0.173 0.115 0.085 0.146 0.108 0.064 0.194 0.163 0.121 0.139 Arsenic 0.1 0.0006 0.0003 < 0.0002 0.0004 0.0003 0.0004 0.0004 < 0.0002 < 0.0002 0.0004 < 0.0002 < 0.0002 0.0003 0.0004 < 0.0002 0.0003 Barium NV 0.0241 0.0197 0.0129 0.0172 0.019 0.0136 0.0229 0.0175 0.00844 0.0144 0.0155 0.00634 0.0145 0.0186 0.0107 0.0145 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.000007 < 0.000007 < 0.000007 < 0.000007 0.000009 0.00001 0.000013 Boron 0.2 0.032 0.0404 0.0272 0.0097 0.0366 0.0159 0.0389 0.0098 0.0104 0.0142 0.0182 0.0127 0.0178 0.033 0.023 0.037 Cadmium8 0.0001 0.000033 0.000009 0.00002 0.000024 0.000019 0.000024 0.00002 0.000022 0.00001 0.000008 0.000082 0.00001 0.000019 0.000013 0.000014 0.000013 Calcium NV 4.83 4.44 3.24 2.84 4.01 2.59 3.68 1.8 1.54 2.78 3.44 1.41 3.26 4.37 2.67 4.56 Chromium (total) NV 0.0006 < 0.0005 < 0.0005 0.0006 < 0.0005 < 0.0005 0.0006 < 0.0005 < 0.0005 0.00125 0.0004 0.00012 0.00049 0.00035 0.00048 0.00055 Copper8 0.001 0.0006 < 0.0005 < 0.0005 0.0008 0.001 0.0008 0.0006 < 0.0005 < 0.0005 0.00055 0.00535 0.00031 0.00059 0.00051 0.00038 0.00035 Iron 0.3 4.28 1.15 0.52 2.59 0.72 1.33 1.53 0.49 0.38 1.86 0.80 0.32 1.32 1.37 0.67 1.26 Lead8 0.001 0.00088 0.00044 0.00044 0.00098 0.00077 0.00061 0.00152 0.00025 0.00016 0.00074 0.00032 0.00025 0.00040 0.00045 0.00032 0.00039 Magnesium NV 1.000 0.990 0.776 0.546 0.931 0.571 0.796 0.436 0.360 0.568 0.724 0.312 0.618 0.997 0.662 0.951 Manganese NV 0.219 0.0492 0.0329 0.0543 0.0273 0.0677 0.0333 0.0264 0.0149 0.04 0.0214 0.0189 0.032 0.0436 0.0297 0.015 Phosphorous 0.02 0.07 0.034 0.012 0.062 < 0.009 0.026 0.046 0.011 0.014 0.022 0.019 0.007 0.035 0.026 0.019 0.035 Potassium NV 0.557 0.832 0.516 0.13 0.443 0.383 0.302 0.219 0.239 0.174 0.308 0.344 0.155 0.668 0.354 0.613 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.00004 0.00008 0.00005 0.00009 Silver 0.00001 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 0.000006 0.000003 0.000002 < 0.000002 Sodium NV 1.7 1.45 1.64 0.51 1.27 1.04 1.64 0.69 0.76 0.88 1.42 0.64 1.06 1.65 1.44 1.68 Zinc 0.02 0.01 0.006 0.005 0.004 0.008 0.006 0.008 0.006 0.006 0.009 0.005 0.004 0.007 0.004 0.005 0.005 Conductivity (μs/cm)6 NV 40.1 43.7 30.0 24.1 40 120.7 33.2 20 20 37 64 10 30 110 30 40 Dissolved Oxygen (DO)6 5 2.00 3.43 11.52 6.29 6.72 8.54 7.83 9.9 8.11 6.51 - 7.93 5.07 7.78 10.54 9.29 pH (units) 6 6.5-8.5 6.40 5.87 7.77 7.11 7.48 8.1 7.42 7.41 6.98 7.32 7.26 7.54 7.72 8.42 7.92 7.23 Temperature (°C)6 NV 20.0 12.7 7.0 21.4 11.8 20.5 20 5.8 13.3 17.9 16.1 7.4 17.6 13.9 6.2 10.4 Oxidation Reduction Potential (mV) 6 NV - - 8.0 24 27 54 43 45 36 66 -79 -66 105 6 -26 69 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 Parameters PWQO2 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) >25% decrease 72 223 116 207 94 211 81 154 65 122 75 103 Conductivity (us/cm) NV -----859265596233432254342 pH (Units) 6.5 - 8.5 -----7.04 6.79 7.25 7.42 7.15 7.63 7.44 Solids - Total Dissolved (TDS) NV 177 - 223 546 223 631 174 431 177 317 146 166 Solids - Total Suspended (TSS) NV - 540 ------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 18 48 23 45 21 46 < 8 35 < 8 21 < 8 38 Phenols 0.001 0.002 0.005 < 0.002 0.003 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 2.7 33 4.4 35 5.9 17 2.6 8.9 2.3 4.5 1.8 2.5 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.4 0.2 0.4 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Sulphate NV 62 160 59 160 75 220 46 160 44 94 34 58

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV 0.56 < 0.05 1.5 1.14 1.67 0.79 0.5 1.71 0.25 1.47 0.08 0.25 Nitrogen - Total Kjeldahl (TKN) NV 0.5 0.5 < 0.5 0.8 < 0.5 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Hardness 500 112 346 131 339 170 406 114 317 95.4 215 107 158 Aluminum 0.075 0.027 0.032 0.031 0.037 0.031 0.040 0.026 0.044 0.024 0.016 0.017 0.023 Barium NV 0.038 0.116 0.0418 0.138 0.0553 0.125 0.0347 0.0983 0.0344 0.072 0.0456 0.0673 Beryllium 0.011 < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 0.00003 < 0.00002 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 Boron 0.2 0.46 1.13 0.438 0.865 0.487 1.26 0.454 0.845 0.345 0.693 0.395 0.665 Cadmium8 0.0001 < 0.0001 < 0.0001 < 0.00006 < 0.00006 < 0.00006 0.00005 0.000021 0.000033 0.000003 0.00002 0.000005 0.000009 Calcium NV 34.9 103 40.2 102 52.7 120 35.4 94.2 29.2 65.9 33.2 49 Chromium (total) NV 0.002 0.011 0.0004 0.0007 0.0009 0.0039 0.0007 0.0014 0.0018 0.0007 0.0008 0.0007 Copper8 0.001 0.0016 0.006 0.0029 0.0043 0.003 0.0053 0.0071 0.005 0.0049 0.0021 0.0025 0.003 Iron 0.3 0.05 0.03 0.02 0.07 0.03 0.02 0.03 0.03 0.02 0.02 0.01 0.03 Lead8 0.001 0.00120 < 0.0002 0.00107 < 0.00002 0.00002 < 0.00002 0.00009 0.00021 0.00017 0.00003 0.00077 0.00011 Magnesium NV 6.140 21.400 7.550 20.300 9.400 25.900 6.320 19.900 5.430 12.300 5.870 8.680 Manganese NV 0.035 0.388 0.069 0.456 0.1 0.305 0.0356 0.114 0.0435 0.0673 0.003 0.0286 Phosphorous 0.02 < 0.02 0.08 < 0.01 0.03 0.03 0.04 0.01 < 0.01 < 0.01 < 0.01 0.023 0.01 Potassium NV 4.04 16 6.82 15 8.23 15.9 6.1 11.3 4.98 6.17 3.91 5.12 Selenium 0.1 < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 Silver 0.00001 < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 Sodium NV 5.78 33.5 9.95 32.4 8.64 22.1 6.23 15 4.64 7.92 3.49 5.21 Zinc 0.02 0.006 0.011 0.007 0.0217 0.0084 0.009 0.008 0.004 0.008 0.007 0.004 0.005 Conductivity (μs/cm)6 NV 173 624 648 513 267 715 255 688 230 516 218 334 Dissolved Oxygen (DO)6 5 ------pH (units) 6 6.5-8.5 6.6 6.22 6.8 7.1 6.4 6.91 6.98 6.51 6.8 6.42 6.87 7.05 Temperature (°C)6 NV - - 10.8 9.2 8.3 11.2 6.6 10.7 3.9 11 10.4 12 Oxidation Reduction Potential (mV) 6 NV------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 98-5 Parameters PWQO2 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) >25% decrease 47 133 72 149 42 66 65 112 70 93 53 104 Conductivity (us/cm) NV 102 421 200 400 131 171 160 282 167 243 125 275 pH (Units) 6.5 - 8.5 7.12 7.34 7.5 7.07 7.33 7.79 7.44 7.51 7.62 7.85 7.19 7.25 Solids - Total Dissolved (TDS) NV 100 266 106 297 71 94 97 177 106 126 103 169 Solids - Total Suspended (TSS) NV ------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 13 21 15 24 12 13 9 19 < 8 23 9 19 Phenols 0.001 0.007 0.003 < 0.002 < 0.002 < 0.002 < 0.002 0.004 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 0.72.81.82.70.91.40.91.92213 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.0523 < 0.005 < 0.005 < 0.005 < 0.005 <0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.3 0.1 0.1 0.1 0.2 0.1 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate NV 19 62 23 66 13 17 15 27 18 26 12 36

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 5 10 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV < 0.05 2.21 0.09 < 0.05 0.59 0.06 < 0.06 0.07 < 0.03 < 0.03 < 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV < 0.5< 0.5< 0.5< 0.5----< 0.06 < 0.06 - - Hardness 500 63.6 188 70.3 192 62.9 50.6 63.3 142 75.6 136 58.7 137 Aluminum 0.075 0.025 0.030 0.026 0.025 0.024 0.024 0.020 0.022 0.026 0.028 0.020 0.020 Barium NV 0.0444 0.122 0.0417 0.0867 0.0397 0.0334 0.0395 0.108 0.0486 0.111 0.043 0.101 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000014 < 0.000007 < 0.000007 0.000007 0.000012 Boron 0.2 0.352 0.905 0.357 0.976 0.299 0.262 0.28 0.519 0.506 0.495 0.213 0.47 Cadmium8 0.0001 0.000044 0.000014 0.000022 0.000018 0.000006 0.000027 0.00001 0.000028 0.000012 0.000008 0.000008 0.000007 Calcium NV 20 58 22.2 56.6 19.3 15.7 19.7 43.2 23.8 42.1 18.5 42.5 Chromium (total) NV 0.0005 0.0011 < 0.0005 0.0071 < 0.0005 0.0016 < 0.0005 0.00032 0.00026 0.00017 0.00055 0.0005 Copper8 0.001 0.0022 0.003 0.0028 0.0036 0.0018 0.0029 0.0021 0.00309 0.00263 0.0017 0.00143 0.00187 Iron 0.3 0.03 0.02 0.01 0.02 0.04 0.01 0.11 0.01 0.01 0.03 0.01 0.13 Lead8 0.001 0.00008 < 0.00002 0.00003 < 0.00002 0.00003 < 0.00002 < 0.00002 0.00003 0.00002 0.00001 < 0.00001 0.00001 Magnesium NV 3.300 10.400 3.630 12.200 3.330 2.750 3.430 8.160 3.910 7.530 3.070 7.480 Manganese NV 0.014 0.0364 0.009 0.0281 0.0111 0.0072 0.01 0.0223 0.00845 0.0175 0.00606 0.017 Phosphorous 0.02 3.29 < 0.009 1.22 0.5 < 0.009 < 0.009 < 0.009 < 0.009 0.12 < 0.003 < 0.003 0.003 Potassium NV 0.01 5.5 3 5.78 2.56 2.47 2.57 4.31 2.61 3.69 2.59 4 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.00011 0.00009 0.00007 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium NV 2.02 6.34 2.22 6.57 2.03 1.9 1.89 4 2.39 4.21 3.24 4.42 Zinc 0.02 0.004 0.003 0.006 < 0.002 < 0.002 0.002 < 0.002 0.012 0.004 0.006 < 0.002 0.003 Conductivity (μs/cm)6 NV 143.6 414 170 440 139.2 160 1070 290 170 90 130 320 Dissolved Oxygen (DO)6 5 --2.53 6.9 3.21 6.54 6.83 - 2.39 4.5 2.13 4.11 pH (units) 6 6.5-8.5 7.79 6.47 7.03 7.33 7 7.49 7.67 6.96 7.16 7.84 6.76 6.5 Temperature (°C)6 NV 7.9 11.4 6.7 11.4 6.6 9.4 7.9 12.8 5.5 12.7 5.9 13 Oxidation Reduction Potential (mV) 6 NV - - -9 66 4 64 -32 -57 -30 31 -23 90 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 Parameters PWQO2 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) >25% decrease 204 155 190 102 196 230 223 541 303 669 457 473 Conductivity (us/cm) NV -----1820 1580 1890 1630 1670 1390 1340 pH (Units) 6.5 - 8.5 -----7.48 7.39 7.81 8.09 7.69 8.05 7.79 Solids - Total Dissolved (TDS) NV 494 - 583 797 1570 1360 1200 1450 1330 1260 894 951 Solids - Total Suspended (TSS) NV -369------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 75 60 70 61 109 123 92 114 94 94 40 70 Phenols 0.001 0.003 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 26 28 59 70 140 120 68 72 85 58 32 42 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 1.3 1 1.2 0.7 0.3 0.1 0.9 0.2 0.7 0.1 0.1 0.1 Sulphate NV 130 110 190 370 730 630 520 510 540 280 180 240

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 0.06 0.06 0.11

Nitrogen - Nitrate (N03) NV < 0.05 < 0.05 0.74 1.56 1.08 0.38 3.3 0.13 4.77 0.47 2.85 1.42 Nitrogen - Total Kjeldahl (TKN) NV 2.1 1.4 1.8 1.2 0.9 1 1.9 0.8 1.3 0.9 < 0.5 0.7 Hardness 500 267 232 276 410 676 634 697 939 715 552 626 638 Aluminum 0.075 0.039 0.288 0.017 0.016 0.032 0.047 0.171 0.039 0.020 0.023 0.017 0.021 Barium NV 0.237 0.19 0.231 0.281 0.219 0.164 0.176 0.224 0.169 0.165 0.11 0.13 Beryllium 0.011 < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00003 < 0.00002 < 0.00002 Boron 0.2 2.51 1.77 1.62 1.42 1.99 1.91 3.66 3.61 3.08 3.7 3.55 3.48 Cadmium8 0.0001 < 0.0001 < 0.0001 0.00008 < 0.00006 < 0.00006 0.000009 0.000043 0.000025 < 0.000003 0.000021 0.00001 0.000031 Calcium NV 64.7 58.7 67.1 101 169 161 180 252 195 159 187 200 Chromium (total) NV 0.003 0.005 0.0011 0.0008 0.0024 0.0029 0.0017 0.0018 0.0037 0.0018 0.0013 0.0014 Copper8 0.001 < 0.0008 < 0.005 0.0026 0.0021 0.006 0.0047 0.014 0.0077 0.0103 0.0081 0.0071 0.0068 Iron 0.3 3.04 4.93 0.22 0.97 0.67 1.65 0.05 0.44 0.03 0.06 0.03 0.04 Lead8 0.001 0.00050 < 0.0002 0.00100 < 0.00002 0.00018 0.00005 0.00020 0.00024 0.00032 0.00005 0.00007 0.00005 Magnesium NV 25.500 20.800 26.300 37.900 61.700 56.100 60.400 75.600 55.400 37.900 38.500 33.700 Manganese NV 0.687 0.899 0.528 0.754 1.24 1.31 0.509 0.467 0.195 0.217 0.034 0.115 Phosphorous 0.02 < 0.02 0.17 < 0.01 0.01 0.04 0.01 0.04 < 0.01 < 0.01 < 0.01 0.037 0.026 Potassium NV 12.1 15.8 16.1 20 32 40.6 49.6 58.4 50.6 34.9 36.9 39.9 Selenium 0.1 < 0.005 < 0.005 < 0.003 < 0.003 < 0.001 0.004 0.001 0.001 0.003 0.002 < 0.001 0.001 Silver 0.00001 < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 0.00003 < 0.00001 < 0.00001 0.00001 < 0.00001 < 0.00001 Sodium NV 25.7 27.5 29.8 62.6 87.3 137 127 119 88.2 59.2 47.1 53.4 Zinc 0.02 0.004 0.01 0.0095 0.0148 0.0242 0.007 0.01 0.006 0.013 0.008 0.005 0.004 Conductivity (μs/cm)6 NV 462 31.4 483 612 987 1492 1386 1871 1820 1500 1325 1336 Dissolved Oxygen (DO)6 5 ------pH (units) 6 6.5-8.5 7.2 6.79 6.7 6.8 6.8 7.02 7.05 6.73 6.44 6.75 7.27 7.15 Temperature (°C)6 NV - - 10.5 8.7 8.8 10.4 9 13.4 4 11 7.8 12.4 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 98-11 Parameters PWQO2 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16 11-Oct-16

Alkalinity (as CaCO3) >25% decrease 353 460 404 313 349 482 550 545 548 486 366 698 Conductivity (us/cm) NV 1100 1130 1550 1450 1950 1470 1510 1640 1500 1410 1010 1450 pH (Units) 6.5 - 8.5 8 7.51 7.9 7.85 7.89 8.12 7.68 7.92 7.94 8.03 8.09 7.81 Solids - Total Dissolved (TDS) NV 797 674 1006 1110 1370 131 997 1130 1070 977 697 1060 Solids - Total Suspended (TSS) NV ------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 48 79 54 45 61 64 69 68 68 78 80 58 Phenols 0.001 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.008 < 0.002 < 0.002 Chloride NV 29 30 120 200 280 120 85 92 65 62 45 44 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.0115 < 0.005 < 0.005 < 0.005 < 0.005 <0.005 <0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate NV 190 54 270 240 260 170 170 260 240 220 160 100

Nitrogen - Nitrite (N02) NV 0.07 < 0.06 0.13 < 0.06 0.19 < 0.03 0.16 0.12 0.03 0.04 0.06 0.29

Nitrogen - Nitrate (N03) NV 2.72 0.53 1.26 0.16 3.19 0.14 4.64 1.21 0.36 0.26 2.12 3.46 Nitrogen - Total Kjeldahl (TKN) NV 0.713< 0.50.5------Hardness 500 563 419 577 624 599 471 632 615 654 629 579 701 Aluminum 0.075 0.013 0.018 0.017 0.019 0.015 0.018 0.014 0.018 0.023 0.034 0.012 0.015 Barium NV 0.0893 0.206 0.143 0.145 0.152 0.126 0.136 0.138 0.157 0.132 0.126 0.163 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000008 0.000008 0.000007 < 0.000007 0.00001 Boron 0.2 2.51 2.91 2.68 2.47 2.55 2.44 3.11 3.06 3.12 2.83 2.77 3.39 Cadmium8 0.0001 0.00003 0.000096 0.000006 0.000007 0.000029 0.000004 0.000015 0.00015 0.000018 0.000021 0.000005 0.000019 Calcium NV 179 113 182 197 185 149 197 193 205 196 177 223 Chromium (total) NV 0.0022 0.0044 0.0011 0.0054 0.0012 0.0066 0.0013 0.00078 0.00035 0.00035 0.00051 0.00064 Copper8 0.001 0.0069 0.0038 0.0054 0.01 0.0053 0.0136 0.0068 0.0075 0.00606 0.00467 0.00495 0.00643 Iron 0.3 0.02 12.10 0.02 0.18 0.04 0.03 0.01 0.02 0.03 0.08 0.03 0.03 Lead8 0.001 0.00004 0.00003 0.00002 < 0.00002 0.00009 0.00003 < 0.00002 0.00002 < 0.00001 0.00007 < 0.00001 < 0.00001 Magnesium NV 28.500 33.300 29.600 32.200 31.100 24.100 34.300 32.700 34.700 34.000 33.400 34.900 Manganese NV 0.0804 7.85 0.0727 0.124 0.0833 0.0724 0.0708 0.0795 0.0585 0.0774 0.0339 0.0602 Phosphorous 0.02 28.4 0.015 0.05 0.55 < 0.009 < 0.009 < 0.009 0.019 0.08 < 0.003 0.004 0.006 Potassium NV 0.017 28.3 39 38.5 37.2 33.5 33.9 34.5 29.7 30.1 23 28.6 Selenium 0.1 < 0.001 0.003 0.001 0.003 0.001 0.003 < 0.001 0.001 < 0.001 0.00027 0.00022 0.00029 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 0.000002 < 0.000002 0.000005 < 0.000002 < 0.000002 Sodium NV 34.8 42.8 65.2 83.7 113 100 71 114 83.3 73.7 54.8 77.7 Zinc 0.02 0.004 0.005 0.005 0.003 0.004 0.004 < 0.002 0.009 0.004 0.005 < 0.002 0.002 Conductivity (μs/cm)6 NV 1143 1115 1510 530 1885 1510 1740 1716 1470 1340 1110 1370 Dissolved Oxygen (DO)6 5 --2.8 7.95 4.44 4.68 3.19 - 4.82 3.5 3.56 7.88 pH (units) 6 6.5-8.5 7.01 6.4 6.63 6.79 6.8 6.83 7.28 7.14 7.08 6.98 7.09 6.78 Temperature (°C)6 NV 6.3 13.4 5.7 11.3 8.1 8.7 9.2 11.8 5.9 13.7 5.6 14.0 Oxidation Reduction Potential (mV) 6 NV - - 7 70 84 65 38 -42 99 -5 -24 124 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 Parameters PWQO2 3-May-05 17-Oct-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) >25% decrease 553 583 323 433 338 374 412 474 368 540 440 467 Conductivity (us/cm) NV -----1290 1513 1320 1150 1280 1280 1120 pH (Units) 6.5 - 8.5 -----7.83 6.97 7.63 7.87 7.36 7.82 7.31 Solids - Total Dissolved (TDS) NV 1060 218 766 943 949 869 1050 931 869 857 794 686 Solids - Total Suspended (TSS) NV 126 1150 200 200 116 68 < 4 64 44 116 26 < 4 Oxygen Demand - Biological (BOD) NV 2< 62226774< 2< 4< 2< 2 Oxygen Demand - Chemical (COD) NV 150 166 120 134 94 110 84 100 69 91 75 80 Phenols 0.001 0.003 < 0.002 0.004 0.004 < 0.002 < 0.002 0.003 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 120 95 49 55 63 58 53 61 29 49 24 28 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 0.0121 0.0408 < 0.005 < 0.005 0.0054 0.0060 0.0050 < 0.005 0.0155 < 0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 17 21.6 12.1 14.9 5.2 8.6 6.6 6.5 6.8 6 8.1 5 Sulphate NV 170 280 260 250 310 250 390 220 250 150 170 110

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV < 0.05 < 0.05 0.09 0.06 < 0.05 0.05 0.13 0.09 0.06 < 0.05 0.1 < 0.05 Nitrogen - Total Kjeldahl (TKN) NV 17.6 23 14.2 17.8 5.9 9.8 6.7 6.6 7.7 7.3 8.8 5 Hardness 500 553 510 408 478 560 494 674 599 514 522 533 511 Aluminum 0.075 0.070 0.055 0.020 0.030 0.032 0.044 0.046 0.100 0.028 0.034 0.034 0.043 Barium NV 0.131 0.109 0.088 0.0765 0.086 0.091 0.0887 0.0837 0.0623 0.0916 0.0788 0.0919 Beryllium 0.011 < 0.005 < 0.001 < 0.00004 < 0.00004 < 0.00004 0.00002 < 0.00002 < 0.00002 < 0.00002 0.00008 < 0.00002 < 0.00002 Boron 0.2 2.12 3.17 2.2 3.02 2.32 2.42 2.23 2.22 1.68 2.09 2.13 2.41 Cadmium8 0.0001 < 0.0001 < 0.0001 0.00008 < 0.00006 < 0.00006 < 0.000003 0.000032 0.00003 < 0.000003 0.000064 0.000015 0.000011 Calcium NV 148 134 110 125 162 143 189 172 151 157 156 150 Chromium (total) NV 0.01 0.013 0.0015 0.0018 0.001 0.0055 0.0012 0.0027 0.0057 0.0017 0.0018 0.0017 Copper8 0.001 0.0058 < 0.005 0.033 0.0092 0.0032 0.0025 0.0049 0.0042 0.0028 0.0022 0.0037 0.0021 Iron 0.3 21.20 16.40 11.00 3.13 46.40 28.90 24.30 22.10 12.80 12.90 11.40 13.00 Lead8 0.001 0.00050 < 0.0002 0.00124 < 0.00002 0.00004 0.00005 0.00006 0.00007 0.00021 0.00005 0.00046 0.00009 Magnesium NV 44.300 42.700 32.300 40.200 38.000 33.400 49.000 41.100 33.500 31.800 34.600 33.300 Manganese NV 5.52 3.49 2.61 2.71 1.21 1.77 1.06 0.985 0.977 0.792 0.672 1.22 Phosphorous 0.02 0.04 0.06 < 0.01 0.02 0.05 0.05 0.03 < 0.01 0.01 < 0.01 0.043 0.018 Potassium NV 41.4 54.4 39.3 47 37.8 43.6 36.3 45 28.9 31.7 28.7 26.4 Selenium 0.1 < 0.005 < 0.005 < 0.003 < 0.003 0.002 0.003 0.002 < 0.001 0.003 0.002 < 0.001 0.002 Silver 0.00001 < 0.0001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00008 < 0.00001 < 0.00001 Sodium NV 137 135 85.8 114 58.1 95.3 58.6 99.7 50.4 74.5 44.7 45.6 Zinc 0.02 0.005 0.012 0.0288 0.0111 0.0113 0.011 0.008 0.004 0.008 0.005 0.008 0.01 Conductivity (μs/cm)6 NV 1124 1315 2515 1072 1020 1053 1270 1391 1250 1246 1185 1179 Dissolved Oxygen (DO)6 5 ------pH (units) 6 6.5-8.5 6.9 6.69 6.7 7.2 6.6 6.29 6.6 6.6 6.75 6.51 6.95 6.48 Temperature (°C)6 NV - - 10.9 9.1 11.2 13 11.3 12.9 5.7 13.4 11.9 14.6 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 OV2 Parameters PWQO2 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15

Alkalinity (as CaCO3) >25% decrease 425 130 547 413 331 526 482 514 480 Conductivity (us/cm) NV 978 386 1160 920 962 1200 1120 1150 1040 pH (Units) 6.5 - 8.5 7.47 7.63 7.91 7.44 7.7 7.96 7.75 7.82 7.69 Solids - Total Dissolved (TDS) NV 746 246 686 677 666 720 674 737 689 Solids - Total Suspended (TSS) NV 37 94 241 67 52 33 25 19 118 Oxygen Demand - Biological (BOD) NV < 2< 2< 4< 4< 4< 4< 4< 4< 4 Oxygen Demand - Chemical (COD) NV 70 21 76 65 61 82 72 78 64 Phenols 0.001 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 172 20211239323226 Ammonia, Unionized (asN)7 0.02 < 0.005 < 0.005 0.0053 < 0.005 0.0060 0.0034 0.0089 < 0.005 < 0.005

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 5.4 0.3 6.2 2.3 4.5 4.8 5.3 1.7 5.2 Sulphate NV 160 87 87 140 140 71 87 98 89

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV < 0.05 < 0.05 0.11 0.36 0.15 < 0.06 < 0.06 0.19 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV 5.1< 0.56.72.6----- Hardness 500 523 173 515 444 425 508 485 492 497 Aluminum 0.075 0.037 0.017 0.040 0.044 0.031 0.033 0.029 0.032 0.040 Barium NV 0.0658 0.152 0.0803 0.0708 0.06 0.0767 0.0708 0.0711 0.0725 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 0.000008 0.000007 Boron 0.2 2.07 0.508 2.07 2.16 2.04 2.09 2.11 2.26 1.72 Cadmium8 0.0001 0.000048 < 0.000003 0.000018 0.000039 0.000017 0.00002 0.000008 0.000009 0.000004 Calcium NV 155 54 150 128 124 150 144 146 148 Chromium (total) NV 0.002 0.0013 0.0014 0.0066 0.0011 0.013 0.0013 0.00091 0.00055 Copper8 0.001 0.0028 0.0009 0.0023 0.005 0.0016 0.0045 0.0016 0.00161 0.00122 Iron 0.3 11.40 1.46 11.10 7.38 11.30 7.93 8.22 5.70 5.76 Lead8 0.001 0.00021 < 0.00002 0.00003 0.00010 0.00004 0.00002 < 0.00002 0.00001 < 0.00001 Magnesium NV 33.000 9.170 34.400 30.100 27.200 32.300 30.700 31.000 30.900 Manganese NV 1.56 0.0637 1.88 1.11 1.36 1.35 0.699 0.671 0.564 Phosphorous 0.02 24.3 0.02 < 0.03 0.18 0.014 < 0.009 < 0.009 0.016 < 0.03 Potassium NV 0.05 3.95 30.2 22.1 21.3 27 25.6 24.9 23.1 Selenium 0.1 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00009 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 Sodium NV 33.1 4.81 38.7 37.9 28.4 45.5 37.9 42 36.5 Zinc 0.02 0.006 < 0.002 0.008 < 0.002 0.006 0.004 0.003 0.005 0.004 Conductivity (μs/cm)6 NV 1184 284 1180 980 1029 1250 1100 1510 1040 Dissolved Oxygen (DO)6 5 - - 10.03 7.7 7.6 3.82 5.46 - 3.78 pH (units) 6 6.5-8.5 6.65 6.49 6.76 6.81 6.79 6.59 6.95 6.09 6.86 Temperature (°C)6 NV 8.4 10.5 7.3 11.3 11.9 9.6 10.2 14.6 5.2 Oxidation Reduction Potential (mV) 6 NV - - -50 87 12 164 -27 -47 79 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 Parameters PWQO2 3-May-05 31-May-06 8-Nov-06 9-May-07 9-Oct-07 20-May-08 14-Oct-08 22-Apr-09 8-Oct-09 19-May-10 30-Sep-10

Alkalinity (as CaCO3) >25% decrease 563 856 724 17 719 942 755 626 683 660 512 Conductivity (us/cm) NV ----1690 2160 1570 1600 1440 1270 1090 pH (Units) 6.5 - 8.5 ----7.54 7.25 7.95 7.98 7.35 7.85 7.59 Solids - Total Dissolved (TDS) NV 983 1270 1230 1220 1060 1450 1070 1230 963 906 683 Solids - Total Suspended (TSS) NV ------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 138 167 164 186 160 129 119 102 113 94 76 Phenols 0.001 0.008 0.005 0.008 < 0.002 < 0.002 0.006 0.006 < 0.002 < 0.002 < 0.002 < 0.002 Chloride NV 48 86 100 85 89 82 73 46 51 39 34 Ammonia, Unionized (asN)7 0.02 < 0.005 0.0102 0.0072 0.0174 0.0106 0.0146 0.0237 0.0085 0.0166 0.0065 0.0343

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 7.2 8 8.9 9 19.2 13.4 16.9 10.9 11.7 9 13.5 Sulphate NV 160 150 100 100 69 200 110 280 110 65 51

Nitrogen - Nitrite (N02) NV < 0.06 0.3 0.09 0.07 0.28 0.06 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06

Nitrogen - Nitrate (N03) NV 0.16 4.94 6.93 3.27 2.83 5.12 1.96 0.93 3.24 3.05 3.66 Nitrogen - Total Kjeldahl (TKN) NV 8.5 10.1 11.7 10 21.5 14.3 17.3 11.5 13.4 10.2 14 Hardness 500 580 817 713 729 575 903 699 799 602 631 474 Aluminum 0.075 0.021 0.034 0.021 0.030 0.027 0.063 0.067 0.019 0.018 0.017 0.022 Barium NV 0.196 0.188 0.251 0.201 0.302 0.288 0.275 0.224 0.221 0.23 0.192 Beryllium 0.011 < 0.005 < 0.00004 < 0.00004 < 0.00004 0.00003 < 0.00002 0.00003 < 0.00002 0.00004 < 0.00002 < 0.00002 Boron 0.2 4.63 5.46 5.07 6.72 5.07 8.3 4.55 4.7 3.91 4.6 3.32 Cadmium8 0.0001 < 0.0001 0.00015 < 0.00006 < 0.00006 0.000054 0.000077 0.000048 0.000025 0.000046 0.000033 0.000027 Calcium NV 139 193 166 163 143 201 168 181 147 156 130 Chromium (total) NV 0.007 0.0026 0.0013 0.0024 0.0052 0.0024 0.0025 0.0092 0.0016 0.002 0.0016 Copper8 0.001 0.0047 0.033 0.0125 0.0087 0.006 0.0134 0.0074 0.0128 0.0069 0.0078 0.0039 Iron 0.3 0.84 0.12 0.12 0.13 2.19 0.55 0.33 0.12 0.31 0.47 2.02 Lead8 0.001 0.00050 0.00150 0.00007 0.00009 0.00010 0.00013 0.00004 0.00009 0.00004 0.00006 < 0.00002 Magnesium NV 56.500 81.400 72.300 77.800 52.700 97.400 68.100 84.300 56.700 58.800 36.600 Manganese NV 5.12 2.58 7.01 3.28 7.62 4.14 4.14 3.96 4.74 4.06 5.23 Phosphorous 0.02 0.03 0.02 3 0.07 0.1 0.04 < 0.01 0.01 0.01 0.035 0.062 Potassium NV 31.4 49.9 44.3 48 56.4 62.4 52.5 43 35.2 37.1 33.1 Selenium 0.1 < 0.005 < 0.003 < 0.003 < 0.001 0.005 0.001 0.001 0.006 0.002 0.002 0.002 Silver 0.00001 < 0.0001 < 0.00003 < 0.00003 < 0.00003 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00003 < 0.00001 < 0.00001 Sodium NV 86.1 102 125 81.1 104 109 113 84.7 66.7 61 47 Zinc 0.02 0.004 0.023 0.0111 0.012 0.018 0.01 0.005 0.01 0.004 0.006 0.01 Conductivity (μs/cm)6 NV 944 3405 1310 1042 1534 1811 1562 1710 1393 1374 1153 Dissolved Oxygen (DO)6 5 ------pH (units) 6 6.5-8.5 7.1 6.8 6.7 6.9 6.4 6.77 6.78 6.78 6.82 6.43 6.99 Temperature (°C)6 NV - 11.1 8.3 13.5 12.2 10 12.9 5.5 11.9 14.7 14.4 Oxidation Reduction Potential (mV) 6 NV ------Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 6 - Groundwater PWQO Comparison

OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV3 OV-3 Parameters PWQO2 27-Apr-11 4-Oct-11 25-Apr-12 25-Oct-12 8-May-13 6-Nov-13 7-May-14 14-Oct-14 15-Apr-15 13-Oct-15 27-Apr-16

Alkalinity (as CaCO3) >25% decrease 574 339 710 374 502 462 574 537 449 490 633 Conductivity (us/cm) NV 1210 982 1550 830 1380 1030 1380 1170 959 1060 1370 pH (Units) 6.5 - 8.5 7.54 7.63 7.87 7.42 7.7 7.78 7.9 7.67 7.67 7.8 7.38 Solids - Total Dissolved (TDS) NV 943 626 983 560 889 603 866 746 569 637 983 Solids - Total Suspended (TSS) NV ------Oxygen Demand - Biological (BOD) NV ------Oxygen Demand - Chemical (COD) NV 96 71 94 60 97 83 92 82 75 96 109 Phenols 0.001 0.004 0.003 < 0.002 < 0.002 < 0.002 < 0.002 0.003 < 0.002 < 0.002 0.005 0.004 Chloride NV 32 16 40 30 43 32 37 47 39 40 47 Ammonia, Unionized (asN)7 0.02 0.0068 < 0.005 0.0067 0.0304 0.0086 0.0051 0.0125 0.0217 0.0105 0.0136 0.0081

Nitrogen - Ammonia (NH3) & Ammonium (NH4) NV 8.8 0.1 6.8 8.4 9.2 7.9 7.1 11 9.4 14.6 7.4 Sulphate NV 140 130 150 42 150 28 160 36 27 27 120

Nitrogen - Nitrite (N02) NV < 0.06 < 0.06 < 0.06 0.17 0.03 0.06 0.04 0.06 0.05 < 0.03 < 0.03

Nitrogen - Nitrate (N03) NV 1.39 0.06 0.27 2.71 0.5 1.51 < 0.06 3.14 2.3 0.06 < 0.06 Nitrogen - Total Kjeldahl (TKN) NV 12.2 2.9 6.6 11.8 ------Hardness 500 585 417 681 355 552 369 590 469 338 388 683 Aluminum 0.075 0.023 0.043 0.023 0.019 0.022 0.020 0.018 0.014 0.024 0.032 0.021 Barium NV 0.185 0.0778 0.154 0.166 0.186 0.152 0.166 0.127 0.11 0.185 0.219 Beryllium 0.011 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.00002 < 0.000007 0.000008 0.000009 0.000012 Boron 0.2 4.64 2.24 5.15 2.91 4.17 2.71 4.25 3.33 2.39 2.49 4.47 Cadmium8 0.0001 0.000072 0.000035 0.000032 0.000077 0.000044 0.000039 0.000039 0.000019 0.000023 0.000035 0.000052 Calcium NV 144 120 168 90.8 139 94.7 147 125 90 105 184 Chromium (total) NV 0.003 0.0027 0.0016 0.0082 0.0014 0.0125 0.0014 0.00074 0.00041 0.00057 0.0008 Copper8 0.001 0.0046 0.0021 0.0057 0.0216 0.008 0.0088 0.0079 0.00383 0.00348 0.00258 0.00287 Iron 0.3 12.30 13.80 1.91 3.32 2.17 2.49 1.16 0.55 2.19 8.37 21.40 Lead8 0.001 0.00005 0.00003 0.00003 0.00003 0.00006 < 0.00002 0.00003 0.00002 < 0.00001 0.00004 < 0.00001 Magnesium NV 54.500 28.600 63.400 31.100 48.700 32.300 54.300 38.100 27.400 30.600 54.400 Manganese NV 5.34 1.26 2.58 8.71 5.89 5.81 4.41 1.77 3.25 6.48 6.03 Phosphorous 0.02 26.9 < 0.01 0.22 0.17 0.014 < 0.009 < 0.009 0.02 < 0.03 0.007 0.011 Potassium NV 0.044 21.8 32.6 25.3 31.3 28.2 26.9 30.5 20.2 26 24.4 Selenium 0.1 < 0.001 0.002 < 0.001 < 0.001 < 0.001 0.003 0.001 < 0.001 < 0.001 0.0004 0.00043 Silver 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00002 < 0.00001 < 0.00001 < 0.00001 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium NV 52.7 33.7 67.7 48.3 57.3 50.5 52.8 48.7 43 42.7 67.7 Zinc 0.02 0.003 0.004 0.003 0.006 < 0.002 0.003 < 0.002 0.006 0.003 0.004 0.003 Conductivity (μs/cm)6 NV 1404 985 1470 260 1443 1100 1340 1340 1100 1110 1250 Dissolved Oxygen (DO)6 5 --3.03 4.99 4.29 2.88 2.34 - 2.69 7.4 3.36 pH (units) 6 6.5-8.5 6.62 6.1 6.8 7.24 6.67 6.55 6.97 6.91 6.93 6.59 6.71 Temperature (°C)6 NV 10 13.5 7.9 11.5 11 9.8 10.2 13.5 5.6 13.3 7.0 Oxidation Reduction Potential (mV) 6 NV - - 92 64 88 77 32 13 -18 -20 131 Notes: 1. All results expressed in mg/L unless otherwise stated. 2. PWQO means Provincial Water Quality Objective 3. Bold text and shading indicate values exceeding PWQO. 4. NV indicates No Value. 5. "-" Indicates parameter not analyzed 6. Results obtained from field data 7. Results obtained using Total Ammonia and field data 8. Based on average background concentrations of hardness 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 7 - Surface Water Trigger Comparison

SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 1 2 Trigger Background Parameters RUC PWQO 3 7 Values Average 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 14-Jul-10 30-Sep-10 27-Apr-11 6-Jul-11 4-Oct-11

8 Alkalinity (as CaCO3) 252 >25% dec. 189 5 7 27 16 5 11 13 455752583 Total Dissolved Solids 266 NV 200 71 < 30 106 109 49 117 74 51 63 63 49 100 77 < 30 94 89 Chloride 125 NV 94 1.8 4 4.7 4.6 3.1 2.4 5 3.1 2.1 1.6 1.6 0.9 0.8 1 0.9 3.3 Ammonia, Unionized (as N) - 0.02 - 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Sulphate 252 NV 189 1.5 4.3 17 13 3.2 3.2 5.9 3.3 1.6 1.2 1.7 0.5 0.5 1.4 0.8 6.2 Nitrate 2.6 NV 1.9 0.07 0.05 < 0.05 0.1 < 0.05 < 0.05 0.07 <0.05 0.29 < 0.05 < 0.05 < 0.05 <0.05 < 0.05 < 0.05 0.17 Hardness 253 500 190 11.7 15.1 41.9 31.9 11.9 21.4 23.2 10 13.5 9.71 12.5 14.1 7.3 6.6 15 17.4 Boron 1.26 0.2 0.95 0.015 0.033 0.111 0.12 0.0248 0.0318 0.0447 0.0202 0.0237 0.0118 0.0228 0.0101 0.0103 0.0163 0.0169 0.0141 Sodium 101 NV 76 1.04 2.35 5.15 4.16 1.7 1.79 2.55 1.61 1.34 1.02 1.35 0.82 0.74 0.88 0.96 1.54 Notes: 1. RUC valuese, as calculated using background water quality from monitor 98-9. 2. PWQO means the Provincial Water Quality Objectives. 3. Trigger Values are the PWQO criteria for regulated parameters and 75 percent of groundwater Reasonable Use Criteria Value concentrations for non-regulated parameters. 4. All results expressed in mg/L unless otherwise stated. 5. Shaded area with bold text indicates PWQO exceedances. 6. Bold text indicates trigger exceedances. 7. The average concentration of the background surface water quality. 8. The background SW average for 2015 was utilized to calculate the PWQO criteria for alkalinity 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 7 - Surface Water Trigger Comparison

SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 SW2 1 2 Trigger Background Parameters RUC PWQO 3 7 Values Average 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 11-Oct-16

8 Alkalinity (as CaCO3) 252 >25% dec. 189 5 51037744967613815 Total Dissolved Solids 266 NV 200 71 < 30 71 83 83 57 40 37 69 51 49 86 80 49 63 Chloride 125 NV 94 1.8 211.12.64.81.41.21.91.712222 Ammonia, Unionized (as N) - 0.02 - 0.005 < 0.005 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.0050 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Sulphate 252 NV 189 1.5 2 0.9 3.3 2.1 1.9 1.7 1.4 0.6 1.2 < 1 < 1 < 10 <1 <1 Nitrate 2.6 NV 1.9 0.07 0.1 < 0.05 <0.05 <0.06 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.06 < 0.06 0.24 <0.06 <0.06 Hardness 253 500 190 11.7 8.9 19.3 12.2 14.7 17.1 8.63 7.6 13.8 10.6 4.7 11.3 21.4 8.9 20.8 Boron 1.26 0.2 0.95 0.015 0.0153 0.0264 0.0233 0.0352 0.0272 0.02 0.0198 0.0167 0.0121 0.0164 0.0147 0.0472 0.019 0.051 Sodium 101 NV 76 1.04 1.15 1.24 0.98 1.59 2.07 0.95 0.96 1 1 0.64 1 1.45 1.21 1.44 Notes: 1. RUC valuese, as calculated using background water quality from monitor 98-9. 2. PWQO means the Provincial Water Quality Objectives. 3. Trigger Values are the PWQO criteria for regulated parameters and 75 percent of groundwater Reasonable Use Criteria Value concentrations for non-regulated parameters. 4. All results expressed in mg/L unless otherwise stated. 5. Shaded area with bold text indicates PWQO exceedances. 6. Bold text indicates trigger exceedances. 7. The average concentration of the background surface water quality. 8. The background SW average for 2015 was utilized to calculate the PWQO criteria for alkalinity 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 7 - Surface Water Trigger Comparison

SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 1 2 Trigger Background Parameters RUC PWQO 3 7 Values Average 9-May-07 5-Jul-07 9-Oct-07 20-May-08 16-Jul-08 14-Oct-08 22-Apr-09 29-Jul-09 8-Oct-09 19-May-10 14-Jul-10 30-Sep-10 27-Apr-11 6-Jul-11 4-Oct-11

8 Alkalinity (as CaCO3) 252 >25% dec. 189 5 5565126485565596 Total Dissolved Solids 266 NV 200 71 < 30 40 74 46 109 43 37 80 63 49 140 46 31 91 71 Chloride 125 NV 94 1.8 1.6 < 0.2 0.8 3.1 2.4 1.5 2.9 2.4 1.4 1.2 1.1 0.4 0.9 0.9 2.2 Ammonia, Unionized (as N) - 0.02 - 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Sulphate 252 NV 189 1.5 2.1 1.1 1.2 3.1 1.3 1.4 3.3 2 1.7 1.1 0.3 0.7 1.8 1.3 5.6 Nitrate 2.6 NV 1.9 0.07 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 0.56 < 0.05 < 0.05 < 0.05 <0.05 < 0.06 0.05 2.04 Hardness 253 500 190 11.7 8.73 6.39 10 11.8 18.7 7.4 10.3 22 9.17 9.9 12.6 7.1 7.3 16.1 15.2 Boron 1.26 0.2 0.95 0.015 0.018 0.008 0.009 0.024 0.0259 0.0145 0.0196 0.0336 0.018 0.0168 0.0139 0.0055 0.0131 0.0246 0.0404 Sodium 101 NV 76 1.04 1.33 0.45 0.64 1.7 1.6 0.69 1.67 1.47 0.98 1.13 0.91 0.38 0.91 1.07 1.45 Notes: 1. RUC valuese, as calculated using background water quality from monitor 98-9. 2. PWQO means the Provincial Water Quality Objectives. 3. Trigger Values are the PWQO criteria for regulated parameters and 75 percent of groundwater Reasonable Use Criteria Value concentrations for non-regulated parameters. 4. All results expressed in mg/L unless otherwise stated. 5. Shaded area with bold text indicates PWQO exceedances. 6. Bold text indicates trigger exceedances. 7. The average concentration of the background surface water quality. 8. The background SW average for 2015 was utilized to calculate the PWQO criteria for alkalinity 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

Table 7 - Surface Water Trigger Comparison

SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 1 2 Trigger Background Parameters RUC PWQO 3 7 Values Average 25-Apr-12 4-Jul-12 25-Oct-12 8-May-13 13-Aug-13 6-Nov-13 7-May-14 16-Jul-14 14-Oct-14 15-Apr-15 9-Jul-15 13-Oct-15 27-Apr-16 5-Jul-16 11-Oct-16

8 Alkalinity (as CaCO3) 252 >25% dec. 189 5 5 5 4 7 6115653810645 Total Dissolved Solids 266 NV 200 71 < 30 71 74 100 83 46 46 74 49 60 71 60 34 46 66 Chloride 125 NV 94 1.8 1.7 < 0.2 1.1 2 3.6 1.4 1 1.7 1.6 1 2 1 2 1 1 Ammonia, Unionized (as N) - 0.02 - 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.0050 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 Sulphate 252 NV 189 1.5 3.2 0.7 3.8 1.8 2.8 1.6 1.5 0.7 1.4 < 1 < 1 5 <1 <1 <1 Nitrate 2.6 NV 1.9 0.07 < 0.05 < 0.05 < 0.05 0.07 < 0.06 < 0.06 < 0.06 < 0.03 < 0.03 < 0.06 < 0.06 < 0.06 <0.06 <0.06 <0.06 Hardness 253 500 190 11.7 9.6 10.8 12.2 15.1 17.1 7.11 7.4 12.7 9.73 4.8 11.1 15.9 8.9 6.8 8.91 Boron 1.26 0.2 0.95 0.015 0.0135 0.0141 0.0201 0.0228 0.0288 0.0136 0.017 0.0156 0.0124 0.0145 0.0134 0.0224 0.019 0.006 0.011 Sodium 101 NV 76 1.04 1.16 0.62 0.96 1.43 1.92 0.85 0.95 1.03 0.98 0.64 0.97 1.28 1.17 0.35 0.64 Notes: 1. RUC valuese, as calculated using background water quality from monitor 98-9. 2. PWQO means the Provincial Water Quality Objectives. 3. Trigger Values are the PWQO criteria for regulated parameters and 75 percent of groundwater Reasonable Use Criteria Value concentrations for non-regulated parameters. 4. All results expressed in mg/L unless otherwise stated. 5. Shaded area with bold text indicates PWQO exceedances. 6. Bold text indicates trigger exceedances. 7. The average concentration of the background surface water quality. 8. The background SW average for 2015 was utilized to calculate the PWQO criteria for alkalinity 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix A Environmental Compliance Approval No. A330803

Cambium Inc.

CONTENT COPY OF ORIGINAL

Ministry Ministère AMENDMENT TO PROVISIONAL CERTIFICATE OF APPROVAL of the de WASTE DISPOSAL SITE Environment l’Environnement NUMBER A330803 Notice No. 3 Issue Date: January 9, 2008 Ontario

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You are hereby notified that I have amended Provisional Certificate of Approval No. A330803issued onDecember 1, 1998 and amended on May 8, 2001 and September 24, 1999forthe use and operation of a 8 hectare landfill site within a total area of 17.2 hectares, as follows:

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This Notice shall constitute part of the approval issued under Provisional Certificate of Approval No. A330803 dated December 1, 1998, as amended.

In accordance with Section 139 of the Environmental Protection Act, R.S.O. 1990, Chapter E-19, as amended, you may by written notice served upon me and the Environmental Review Tribunal within 15 days after receipt of this Notice, require a hearing by the Tribunal. Section 142 of the Environmental Protection Act, provides that the Notice requiring the hearing shall state:

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The Notice should also include:

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And the Notice should be signed and dated by the appellant.

This Notice must be served upon:

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* Further information on the Environmental Review Tribunal’s requirements for an appeal can be obtained directly from the Tribunal at: Tel: (416) 314-4600, Fax: (416) 314-4506 or www.ert.gov.on.ca

The above noted waste disposal site is approved under Section 39 of the Environmental Protection Act.

'$7('$77252172WKLVWKGD\RI-DQXDU\ 7HVID\H*HEUH]JKL3(QJ 'LUHFWRU 6HFWLRQEnvironmental Protection Act 50 F'LVWULFW0DQDJHU02(3HWHUERURXJK 'DYLG)%XFKROW]&DPELXP(QYLURQPHQWDO,QF CONTENT COPY OF ORIGINAL

Ministry Ministère AMENDMENT TO PROVISIONAL CERTIFICATE OF APPROVAL of the de WASTE DISPOSAL SITE Environment l’Environnement NUMBER A330803 Notice No. 2 Ontario

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You are hereby notified that I have amended Provisional Certificate of Approval No. A330803 issued on December 1, 1998 and amended September 24, 1999 for a waste disposal site (landfill), as follows:

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)URPThe Corporation of the Township of Snowdon 55 0LQGHQ2QWDULR .0.

7RCorporation of the Township of Minden Hills 0LOQH6WUHHW32%R[ 0LQGHQ+LOOV2QWDULR .0.

The reason(s) for this amendment to the Certificate of Approval is (are) as follows:

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This Notice shall constitute part of the approval issued under Provisional Certificate of Approval No.A330803 dated December 1, 1998 and amended September 24, 1999.

In accordance with Section 139 of the Environmental Protection Act, R.S.O. 1990, Chapter E-19, as amended, you may by written notice served upon me and the Environmental Appeal Board within 15 days after receipt of this Notice, require a hearing by the Board. Section 142 of the Environmental Protection Act, provides that the Notice requiring the hearing shall state:

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The Notice should also include:

7KHQDPHRIWKHDSSHOODQW 7KHDGGUHVVRIWKHDSSHOODQW 7KH&HUWLILFDWHRI$SSURYDOQXPEHU 7KHGDWHRIWKH&HUWLILFDWHRI$SSURYDO 7KHQDPHRIWKH'LUHFWRU 7KHPXQLFLSDOLW\ZLWKLQZKLFKWKHZDVWHGLVSRVDOVLWHLVORFDWHG

And the Notice should be signed and dated by the appellant. CONTENT COPY OF ORIGINAL

This Notice must be served upon:

7KH6HFUHWDU\* $1' 7KH'LUHFWRU (QYLURQPHQWDO$SSHDO%RDUG 6HFWLRQEnvironmental Protection Act 

* Further information on the Environmental Appeal Board’s requirements for an appeal can be obtained directly from the Board at: Tel: (416) 314-4600, Fax: (416) 314-4506 or www.ert.gov.on.ca

The above noted waste disposal site is approved under Section 39 of the Environmental Protection Act.

'$7('$77252172WKLVWKGD\RI0D\

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2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix B Correspondence

Cambium Inc.

2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix C Field Sheets and Climate Data

Cambium Inc. 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

FIELD SHEET - GROUND WATER DEVELOPMENT & SAMPLING

Water B.H. B.H. Stick - Purge Volumes (L) Temp pH Cond. DO ORP Observations Sample Location o Level Depth (m) Dia. (mm) Up (m) Needed Actual ( C) (units) (mS) (mg/L) (mV) Clarity Colour Odour Sheen Other

98-5 1.13 3.62 38.1 0.92 6 6 5.9 6.76 130 2.13 -23 Cloudy Orange None None

98-6 0.97 4.09 38.1 0.83 10 10 5.5 6.64 220 2.43 -19 Clear Slight Orange None None

Dry x1 Orange 98-7 1.54 3.62 38.1 0.95 5 5.0 7.04 60 5.60 -40 Cloudy None None 2 Grey Dry x1 98-8 0.83 1.37 38.1 0.59 2 5.1 7.20 140 9.78 23 Opaque Brown None None 1 Dry x 1 98-9 1.34 1.82 38.1 0.81 2 4.4 7.94 20 13.68 -24 Cloudy Slight Yellow None None 1 Dry x1 98-11 1.25 4.52 38.1 0.83 11 5.6 7.09 1110 3.56 -24 Cloudy None None None 4

98-12 1.53 5.77 38.1 1.03 14 14 5.6 6.80 180 7.54 29 Cloudy None None None

Dry x1 OV-3 1.15 2.20 38.1 1.12 2.5 7.0 6.71 1250 3.36 131 Cloudy Brown None None 1

MW12-13 2.65 3.91 50.2 0.90 8 8 5.0 6.70 200 4.10 -14 Opaque Yellow None None QA/QC

LOCATION: Irondale Waste Disposal Site DATE: 27-Apr-16 WEATHER (SAMPLE DAY): 0°C Sun 10°C

PROJECT NUMBER: 4713-007 SAMPLED BY: M. Pion + J. Tracey WEATHER (PREVIOUS DAY): 0°C Snow 8°C 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

FIELD SHEET - SURFACE WATER SAMPLING

Sample Depth Width Distance Time Velocity Discharge D.O. Temp. pH Cond. ORP Observations 3 o Station (m) (m) (m) (s) (m/s) (m /s) (mg/L) ( C) (units) (mS) (mV) Clarity Colour Odour Sheen Other

SW1 0.15 Ponded- No Observable Flow 9.09 6.8 7.60 30 -47 Clear Slight Yellow None None

SW2 0.25 1.05 - - 0.25 0.066 8.72 3.9 7.90 40 -81 Clear Slight Yellow None None

SW3 0.25 Ponded- No Observable Flow 11.45 6.8 7.95 40 -47 Clear Slight Yellow None None

SW4 0.30 0.75 - - 0.18 0.041 10.54 6.2 7.92 30 -26 Clear Slight Yellow None None QA/QC

LOCATION: Irondale Waste Disposal Site DATE: 27-Apr-16 WEATHER (SAMPLE DAY): 0°C Sun 10°C

PROJECT NUMBER: 4713-007 SAMPLED BY: M. Pion + J. Tracey WEATHER (PREVIOUS DAY): 0°C Snow 8°C 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

FIELD SHEET - SURFACE WATER SAMPLING

Sample Depth Width Distance Time Velocity Discharge D.O. Temp. pH Cond. ORP Observations 3 o Station (m) (m) (m) (s) (m/s) (m /s) (mg/L) ( C) (units) (mS) (mV) Clarity Colour Odour Sheen Other

SW1 Ponded- No Observable Flow 7.28 29.0 8.37 60 119 Clear Yellow None None QA/QC

SW2 ------Dry

SW3 Ponded- No Observable Flow 6.51 26.9 7.87 20 103 Clear Light Yellow None None

SW4 ------Dry

LOCATION: Irondale Waste Disposal Site DATE: 5-Jul-16 WEATHER (SAMPLE DAY): 14°C Sun 28°C

PROJECT NUMBER: 4713-007 SAMPLED BY: M. Pion + E. Elson WEATHER (PREVIOUS DAY): Sun 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

FIELD SHEET - GROUND WATER DEVELOPMENT & SAMPLING

Water B.H. B.H. Stick - Purge Volumes (L) Temp pH Cond. DO ORP Observations Sample Location o Level Depth (m) Dia. (mm) Up (m) Needed Actual ( C) (units) (mS) (mg/L) (mV) Clarity Colour Odour Sheen Other

98-5 1.31 3.62 38.1 0.92 4 4 13.0 6.50 320 4.11 90 Opaque Brown None None

98-6 1.31 4.09 38.1 0.83 12 12 12.1 7.01 440 3.99 101 Clear Light Yellow Metallic None

98-7 2.28 3.62 38.1 0.95 5 5 12.6 7.41 60 6.85 79 Cloudy Yellow None None

Orange/ 98-8 1.07 1.37 38.1 0.59 1 1 12.9 7.02 110 7.18 88 Opaque Metallic None Brown

98-9 - 1.82 38.1 0.81 ------Dry

Dry x1 98-11 1.64 4.52 38.1 0.83 10 14.0 6.78 1370 7.88 124 Clear Light Yellow None None QA/QC 4

98-12 1.91 5.77 38.1 1.03 14 14 12.9 6.79 170 9.28 112 Clear None None None

OV-3 - 2.20 38.1 1.12 ------Casing Damaged

Yellow MW12-13 3.67 3.91 50.2 0.90 1 1 13.1 6.46 210 9.67 110 Cloudy None None Brown

LOCATION: Irondale Waste Disposal Site DATE: 11-Oct-16 WEATHER (SAMPLE DAY): 15°C Clear

PROJECT NUMBER: 4713-007 SAMPLED BY: T. Ross + T. Jamieson + P. Williams WEATHER (PREVIOUS DAY): 15°C Clear 2016 Annual Report Irondale Waste Disposal Site Cambium Ref.: 4713-007

FIELD SHEET - SURFACE WATER SAMPLING

Sample Depth Width Distance Time Velocity Discharge D.O. Temp. pH Cond. ORP Observations 3 o Station (m) (m) (m) (s) (m/s) (m /s) (mg/L) ( C) (units) (mS) (mV) Clarity Colour Odour Sheen Other

SW1 Observable- Non Measurable Flow 8.04 11.8 6.88 30 73 Clear Yellow None None

SW2 0.08 Observable- Non Measurable Flow 8.29 12.4 7.20 50 73 Clear Yellow None None

SW3 Observable- Non Measurable Flow 5.26 12.0 7.15 20 111 Clear Yellow None None QA/QC

SW4 Observable- Non Measurable Flow 9.29 10.4 7.23 40 69 Clear Yellow None None

LOCATION: Irondale Waste Disposal Site DATE: 11-Oct-16 WEATHER (SAMPLE DAY): 15°C Clear

PROJECT NUMBER: 4713-007 SAMPLED BY: T. Ross + T. Jamieson + P. Williams WEATHER (PREVIOUS DAY): 15°C Clear 11/18/2016 Daily Data Report for April 2016 ­ Climate ­ Environment Canada

Home  Environment and natural resources  Weather, Climate and Hazard  Past weather and climate  Historical Data Daily Data Report for April 2016

HALIBURTON 3 ONTARIO

Latitude: 45°01'56.094" N

Longitude: 78°31'52.014" W

Elevation: 330.00 m

Climate ID: 6163171

WMO ID:

TC ID:

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

DAY

01 † 6.0 1.5 3.8 14.2 0.0 0.0 0.4 0.4 T

02 † 2.5 ­2.5 0.0 18.0 0.0 0.0 5.4 5.4 T

03 † ­4.5 ­11.5 ­8.0 26.0 0.0 0.0 0.0 0.0 5

04 † ­2.5 ­9.5 ­6.0 24.0 0.0 0.0 0.0 0.0 5

05 † 1.0 ­15.0 ­7.0 25.0 0.0 0.0 0.0 0.0 4

06 † 3.5 ­7.5 ­2.0 20.0 0.0 7.8 16.8 24.6 2

07 † 4.5 ­3.0 0.8 17.2 0.0 2.2 0.4 2.6 15

08 † ­0.5 ­8.5 ­4.5 22.5 0.0 0.0 0.0 0.0 10

09 † ­1.5 ­12.5 ­7.0 25.0 0.0 0.0 0.0 0.0 9

10 † 0.0 ­16.5 ­8.3 26.3 0.0 2.8 7.8 10.6 8 Security Manager AV Defender 11 † 9.0 ­4.5 2.3 This 1p5a.g7e is safe 0.0 2.2 T 2.2 13

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max http://climate.weather.gc.ca/climate_data/daily_data_e.html?hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­17&mlyRange=1987­01­01%7C2006­12­01&… 1/3 11/18/2016 Daily Data Report for April 2016 ­ Climate ­ Environment Canada Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

12 † 4.0 ­1.5 1.3 16.7 0.0 0.0 T T 8

13 † 7.5 ­9.5 ­1.0 19.0 0.0 0.0 0.0 0.0 8

14 † 11.5 ­7.5 2.0 16.0 0.0 0.0 0.0 0.0 5

15 † 16.5 ­5.0 5.8 12.2 0.0 0.0 0.0 0.0 T

16 † 20.5 ­4.5 8.0 10.0 0.0 0.0 0.0 0.0 0

17 † 22.5 ­3.5 9.5 8.5 0.0 0.0 0.0 0.0 0

18 † 23.5 ­2.0 10.8 7.2 0.0 0.4 0.0 0.4 0

19 † 14.0 1.5 7.8 10.2 0.0 0.0 0.0 0.0 0

20 † 18.0 ­4.5 6.8 11.2 0.0 0.0 0.0 0.0 0

21 † 21.5 ­1.5 10.0 8.0 0.0 8.8 0.0 8.8 0

22 † 12.5 6.0 9.3 8.7 0.0 T 0.0 T 0

23 † 10.5 ­1.5 4.5 13.5 0.0 0.0 0.0 0.0 0

24 † 9.5 ­3.0 3.3 14.7 0.0 0.0 0.0 0.0 0

25 † 7.0 1.5 4.3 13.7 0.0 0.4 1.6 2.0 0

26 † 11.0 ­1.0 5.0 13.0 0.0 0.0 2.0 2.0 1

27 † 10.5 ­4.5 3.0 15.0 0.0 0.0 0.0 0.0 0

28 † 11.5 ­5.5 3.0 15.0 0.0 0.0 0.0 0.0 0

29 † 12.0 ­3.5 4.3 13.7 0.0 0.0 0.0 0.0 0

30 † 17.0 ­4.0 6.5 11.5 0.0 0.0 0.0 0.0 0

Sum 471.7 0.0 24.6 34.4 59.0

Avg 9.3 ­4.8 2.3

Xtrm 23.5 ­16.5

Summary, average and extreme values are based on the data above.

Legend

A = Accumulated Security Manager AV Defender C = Precipitation occurred, amount uncertain This page is safe

E = Estimated F = Accumulated and estimated L = Precipitation may or may not have occurred http://climate.weather.gc.ca/climate_data/daily_data_e.html?hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­17&mlyRange=1987­01­01%7C2006­12­01&… 2/3 11/7/2016 Daily Data Report for July 2016 ­ Climate ­ Environment Canada

Home  Environment and natural resources  Weather, Climate and Hazard  Past weather and climate  Historical Data Daily Data Report for July 2016

HALIBURTON 3 ONTARIO

Latitude: 45°01'56.094" N

Longitude: 78°31'52.014" W

Elevation: 330.00 m

Climate ID: 6163171

WMO ID:

TC ID:

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

DAY

01 † 20.5 9.5 15.0 3.0 0.0 8.4 0.0 8.4 0

02 † 21.5 9.5 15.5 2.5 0.0 0.0 0.0 0.0 0

03 † 24.0 7.0 15.5 2.5 0.0 0.0 0.0 0.0 0

04 † 27.5 9.5 18.5 0.0 0.5 0.0 0.0 0.0 0

05 † 28.5 8.5 18.5 0.0 0.5 0.0 0.0 0.0 0

06 † 29.5 12.5 21.0 0.0 3.0 T 0.0 T 0

07 † 29.5 18.5 24.0 0.0 6.0 0.0 0.0 0.0 0

08 † 27.5 18.5 23.0 0.0 5.0 26.8 0.0 26.8 0

09 † 23.5 16.5 20.0 0.0 2.0 9.8 0.0 9.8 0

10 † 24.5 13.5 19.0 0.0 1.0 0.0 0.0 0.0 0

11 † 26.5 10.5 18.5 0.0 0.5 0.0 0.0 0.0 0

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max http://climate.weather.gc.ca/climate_data/daily_data_e.html?timeframe=2&hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­06&mlyRange=1987­01­01%7… 1/3 11/7/2016 Daily Data Report for July 2016 ­ Climate ­ Environment Canada Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

12 † 30.5 12.5 21.5 0.0 3.5 0.0 0.0 0.0 0

13 † 32.5 19.5 26.0 0.0 8.0 8.8 0.0 8.8 0

14 † 27.0 19.5 23.3 0.0 5.3 11.2 0.0 11.2 0

15 † 24.5 16.5 20.5 0.0 2.5 T 0.0 T 0

16 † 22.5 12.5 17.5 0.5 0.0 0.0 0.0 0.0 0

17 † 24.5 7.5 16.0 2.0 0.0 4.2 0.0 4.2 0

18 † 25.0 16.0 20.5 0.0 2.5 0.0 0.0 0.0 0

19 † 23.5 10.0 16.8 1.2 0.0 0.0 0.0 0.0 0

20 † 25.5 8.5 17.0 1.0 0.0 0.0 0.0 0.0 0

21 † 30.5 11.0 20.8 0.0 2.8 3.0 0.0 3.0 0

22 † 31.5 20.0 25.8 0.0 7.8 0.0 0.0 0.0 0

23 † 28.5 15.0 21.8 0.0 3.8 0.0 0.0 0.0 0

24 † 27.5 12.5 20.0 0.0 2.0 1.0 0.0 1.0 0

25 † 28.0 19.0 23.5 0.0 5.5 T 0.0 T 0

26 † 29.0 15.0 22.0 0.0 4.0 0.0 0.0 0.0 0

27 † 29.5 12.5 21.0 0.0 3.0 0.0 0.0 0.0 0

28 † 27.0 17.5 22.3 0.0 4.3 0.0 0.0 0.0 0

29 † 25.5 14.5 20.0 0.0 2.0 0.0 0.0 0.0 0

30 † 25.5 9.5 17.5 0.5 0.0 0.0 0.0 0.0 0

31 † 26.5 14.0 20.3 0.0 2.3 0.0 0.0 0.0 0

Sum 13.2 77.8 73.2 0.0 73.2

Avg 26.7 13.5 20.1

Xtrm 32.5 7.0

Summary, average and extreme values are based on the data above.

Legend

A = Accumulated C = Precipitation occurred, amount uncertain E = Estimated http://climate.weather.gc.ca/climate_data/daily_data_e.html?timeframe=2&hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­06&mlyRange=1987­01­01%7… 2/3 11/18/2016 Daily Data Report for October 2016 ­ Climate ­ Environment Canada

Home  Environment and natural resources  Weather, Climate and Hazard  Past weather and climate  Historical Data Daily Data Report for October 2016

HALIBURTON 3 ONTARIO

Latitude: 45°01'56.094" N

Longitude: 78°31'52.014" W

Elevation: 330.00 m

Climate ID: 6163171

WMO ID:

TC ID:

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

DAY

01 † 18.0 7.5 12.8 5.2 0.0 1.8 0.0 1.8 0

02 † 19.0 12.5 15.8 2.2 0.0 5.6 0.0 5.6 0

03 † 19.5 12.5 16.0 2.0 0.0 0.0 0.0 0.0 0

04 † 19.5 4.5 12.0 6.0 0.0 0.0 0.0 0.0 0

05 † 21.0 8.5 14.8 3.2 0.0 0.0 0.0 0.0 0

06 † 24.0 11.5 17.8 0.2 0.0 0.0 0.0 0.0 0

07 † 23.5 11.5 17.5 0.5 0.0 2.6 0.0 2.6 0

08 † 15.5 9.5 12.5 5.5 0.0 1.6 0.0 1.6 0

09 † 9.5 ­0.5 4.5 13.5 0.0 0.0 0.0 0.0 0

10 † 12.5 ­5.0 3.8 14.2 0.0 0.0 0.0 0.0 0 Security Manager AV Defender 11 † 17.5 ­4.0 6.8 This 1p1a.g2e is safe 0.0 0.0 0.0 0.0 0

Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max http://climate.weather.gc.ca/climate_data/daily_data_e.html?hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­17&mlyRange=1987­01­01%7C2006­12­01&… 1/3 11/18/2016 Daily Data Report for October 2016 ­ Climate ­ Environment Canada Max Min Mean Heat Deg Cool Deg Total Total Total Snow on Dir of Max Spd of Max Temp Temp Temp Days Days Rain Snow Precip Grnd Gust Gust °C °C °C mm cm mm cm 10's deg km/h          

12 † 21.5 1.5 11.5 6.5 0.0 4.0 0.0 4.0 0

13 † 9.0 4.0 6.5 11.5 0.0 2.4 T 2.4 0

14 † 12.5 ­2.5 5.0 13.0 0.0 0.0 0.0 0.0 0

15 † 18.5 3.5 11.0 7.0 0.0 1.6 0.0 1.6 0

16 † 18.0 13.5 15.8 2.2 0.0 3.8 0.0 3.8 0

17 † 15.5 10.0 12.8 5.2 0.0 44.4 0.0 44.4 0

18 † 22.5 10.5 16.5 1.5 0.0 9.4 0.0 9.4 0

19 † 18.5 10.5 14.5 3.5 0.0 T 0.0 T 0

20 † 14.0 4.5 9.3 8.7 0.0 8.2 0.0 8.2 0

21 † 7.5 5.5 6.5 11.5 0.0 0.0 0.0 0.0 0

22 † 8.5 3.5 6.0 12.0 0.0 0.0 0.0 0.0 0

23 † 8.5 ­2.0 3.3 14.7 0.0 0.0 0.0 0.0 0

24 † 8.5 2.0 5.3 12.7 0.0 0.0 0.0 0.0 0

25 † 3.5 0.5 2.0 16.0 0.0 0.0 0.0 0.0 0

26 † 3.0 ­5.5 ­1.3 19.3 0.0 0.0 0.0 0.0 0

27 † 0.0 ­2.5 ­1.3 19.3 0.0 T 11.2 11.2 0

28 † 7.0 ­2.0 2.5 15.5 0.0 4.0 0.0 4.0 7

29 † 14.5 ­2.5 6.0 12.0 0.0 0.8 0.0 0.8 T

30 † 6.0 ­1.5 2.3 15.7 0.0 0.0 0.0 0.0 0

31 † 7.5 ­2.5 2.5 15.5 0.0 0.0 0.0 0.0 0

Sum 287.0 0.0 90.2 11.2 101.4

Avg 13.7 3.8 8.7

Xtrm 24.0 ­5.5

Summary, average and extreme values are based on the data above.

Legend Security Manager AV Defender This page is safe

A = Accumulated C = Precipitation occurred, amount uncertain E = Estimated http://climate.weather.gc.ca/climate_data/daily_data_e.html?hlyRange=%7C&dlyRange=1987­09­01%7C2016­11­17&mlyRange=1987­01­01%7C2006­12­01&… 2/3 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix D Laboratory Certificates of Analysis

Cambium Inc. SGS Canada Inc. P.O. Box 4300 - 185 Concession St. Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365 12-May-2016 Cambium Inc. Attn : Dave Bucholtz Date Rec. : 30 April 2016 LR Report: CA10075-APR16 52 Hunter Street East, Peterborough Reference: 4713-007 Irondale GW Canada, K9H 1G5 Phone: 705-742-7900, Fax:705-742-7907 Copy: #1

CERTIFICATE OF ANALYSIS Final Report

Analysis 3: 4: 5: 6: 7: 8: 9: 10: 11: Analysis Analysis 98-5 98-6 98-7 98-8 98-9 98-11 98-12 Approval Date Approval Time Sample Date & Time 27-Apr-16 08:45 27-Apr-16 08:50 27-Apr-16 09:00 27-Apr-16 10:10 27-Apr-16 09:20 27-Apr-16 08:00 27-Apr-16 10:00 Temperature Upon Receipt [°C] -- --- 6.0 6.0 6.0 6.0 6.0 6.0 6.0 Alkalinity [mg/L as CaCO3] 02-May-16 12:28 53 86 17 27 < 2 366 50 Conductivity [uS/cm] 02-May-16 12:28 125 200 47 91 13 1010 203 pH [no unit] 02-May-16 12:28 7.19 7.43 7.23 6.80 5.80 8.09 7.33 Total Dissolved Solids [mg/L] 02-May-16 09:50 103 154 37 74 < 30 697 111 Dissolved Organic Carbon [mg/L] 12-May-16 11:50 3.4 2.7 5.3 2.4 2.3 13.2 3.9 Chemical Oxygen Demand [mg/L] 02-May-16 14:45 9 9 22 30 15 80 < 8 4AAP-Phenolics [mg/L] 29-Apr-16 09:25 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride [mg/L] 05-May-16 15:25 1 2 < 1 12 < 1 45 20 Ammonia+Ammonium (N) [mg/L] 29-Apr-16 10:22 < 0.1 < 0.1 < 0.1 0.2 < 0.1 < 0.1 < 0.1 Sulphate [mg/L] 05-May-16 15:37 12 18 4 2 250 160 13 Nitrite (as N) [mg/L] 04-May-16 13:49 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 0.06 < 0.03 Nitrate (as N) [mg/L] 04-May-16 13:49 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 2.12 0.16 Phosphorus (total reactive) [mg/L] 29-Apr-16 14:38 0.05 < 0.03 0.06 0.08 < 0.03 < 0.03 < 0.03 Hardness (dissolved) [mg/L as CaCO3] 29-Apr-16 16:19 58.7 106 21.3 22.6 3.6 579 67.6 Aluminum (dissolved) [mg/L] 29-Apr-16 16:19 0.020 0.005 0.271 0.004 0.152 0.012 0.043 Barium (dissolved) [mg/L] 29-Apr-16 16:19 0.0430 0.109 0.0202 0.00420 0.0103 0.126 0.0279 Beryllium (dissolved) [mg/L] 29-Apr-16 16:19 0.000007 < 0.000007 0.000018 < 0.000007 0.000045 < 0.000007 0.000007

Boron (dissolved) [mg/L] 29-Apr-16 16:19 0.213 0.256 0.189 0.041 0.016 2.77 0.107 0000678904 OnLine LIMS Page 1 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA10075-APR16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 3: 4: 5: 6: 7: 8: 9: 10: 11: Analysis Analysis 98-5 98-6 98-7 98-8 98-9 98-11 98-12 Approval Date Approval Time Cadmium (dissolved) [mg/L] 29-Apr-16 16:19 0.000008 < 0.000003 0.000008 < 0.000003 0.000025 0.000005 0.000006 Calcium (dissolved) [mg/L] 29-Apr-16 16:19 18.5 33.3 6.79 6.54 1.15 177 23.2 Chromium (dissolved) [mg/L] 29-Apr-16 16:19 0.00055 0.00042 0.00101 0.00032 0.00043 0.00051 0.00042 Cobalt (dissolved) [mg/L] 29-Apr-16 16:19 0.000070 0.000077 0.000085 0.000074 0.000347 0.000273 0.000149 Copper (dissolved) [mg/L] 29-Apr-16 16:19 0.00143 0.00154 0.00347 0.00037 0.00050 0.00495 0.00114 Iron (dissolved) [mg/L] 29-Apr-16 16:19 0.008 0.813 0.106 13.2 0.217 0.029 0.127 Lead (dissolved) [mg/L] 29-Apr-16 16:19 < 0.00001 0.00003 0.00029 0.00001 0.00007 < 0.00001 0.00004 Magnesium (dissolved) [mg/L] 29-Apr-16 16:19 3.07 5.64 1.05 1.52 0.181 33.4 2.34 Manganese (dissolved) [mg/L] 02-May-16 14:51 0.00606 0.0379 0.00276 0.632 0.0228 0.0339 0.00830 Molybdenum (dissolved) [mg/L] 29-Apr-16 16:19 0.00164 0.00150 0.00035 0.00013 0.00007 0.00220 0.00122 Nickel (dissolved) [mg/L] 29-Apr-16 16:19 0.0002 0.0003 0.0003 0.0002 0.0007 0.0045 0.0002 Phosphorus (dissolved) [mg/L] 29-Apr-16 16:19 < 0.003 0.007 0.007 < 0.003 < 0.003 0.004 < 0.003 Potassium (dissolved) [mg/L] 29-Apr-16 16:19 2.59 2.48 0.318 0.383 0.024 23.0 0.589 Selenium (dissolved) [mg/L] 29-Apr-16 16:19 0.00009 0.00008 0.00009 < 0.00004 < 0.00004 0.00022 0.00012 Silicon (dissolved) [mg/L] 29-Apr-16 16:19 3.06 4.73 1.29 0.85 2.01 3.34 2.05 Silver (dissolved) [mg/L] 29-Apr-16 16:19 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium (dissolved) [mg/L] 29-Apr-16 16:19 3.24 3.20 0.60 8.68 0.68 54.8 12.4 Sulfur (dissolved) [mg/L] 29-Apr-16 16:19 3.9 6.7 1.2 < 0.1 0.8 63.6 4.0 Thallium (dissolved) [mg/L] 29-Apr-16 16:20 < 0.000005 < 0.000005 < 0.000005 < 0.000005 < 0.000005 0.000006 < 0.000005 Tin (dissolved) [mg/L] 29-Apr-16 16:20 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00003 < 0.00001 Titanium (dissolved) [mg/L] 29-Apr-16 16:20 0.00018 0.00021 0.02004 0.00045 0.00039 0.00071 0.00032 Vanadium (dissolved) [mg/L] 29-Apr-16 16:20 0.00143 0.00055 0.00190 0.00010 0.00008 0.00199 0.00029 Zinc (dissolved) [mg/L] 29-Apr-16 16:20 < 0.002 < 0.002 0.004 0.003 0.005 < 0.002 0.003

Analysis 12: 13: 14: OV-3 MW12-13 GW QA/QC

Sample Date & Time 27-Apr-16 07:50 27-Apr-16 09:30 27-Apr-16 Temperature Upon Receipt [°C] 6.0 6.0 6.0 Alkalinity [mg/L as CaCO3] 633 47 47 Conductivity [uS/cm] 1370 190 191 pH [no unit] 7.38 6.75 6.84 Total Dissolved Solids [mg/L] 983 126 140 Dissolved Organic Carbon [mg/L] 32.7 4.8 5.0 0000678904 Chemical Oxygen Demand [mg/L] 109 26 20 OnLine LIMS Page 2 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA10075-APR16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 12: 13: 14: OV-3 MW12-13 GW QA/QC

4AAP-Phenolics [mg/L] 0.004 < 0.002 0.004 Chloride [mg/L] 47 21 20 Ammonia+Ammonium (N) [mg/L] 7.4 0.1 0.1 Sulphate [mg/L] 120 15 16 Nitrite (as N) [mg/L] < 0.03 < 0.03 < 0.03 Nitrate (as N) [mg/L] < 0.06 0.12 0.12 Phosphorus (total reactive) [mg/L] < 0.03 < 0.03 < 0.03 Hardness (dissolved) [mg/L as CaCO3] 683 53.1 50.8 Aluminum (dissolved) [mg/L] 0.021 0.044 0.041 Barium (dissolved) [mg/L] 0.219 0.0285 0.0260 Beryllium (dissolved) [mg/L] 0.000012 0.000014 0.000012 Boron (dissolved) [mg/L] 4.47 0.296 0.331 Cadmium (dissolved) [mg/L] 0.000052 0.000018 0.000021 Calcium (dissolved) [mg/L] 184 14.9 13.8 Chromium (dissolved) [mg/L] 0.00080 0.00055 0.00048 Cobalt (dissolved) [mg/L] 0.00738 0.00124 0.00133 Copper (dissolved) [mg/L] 0.00287 0.00089 0.00075 Iron (dissolved) [mg/L] 21.4 0.563 0.546 Lead (dissolved) [mg/L] < 0.00001 0.00047 0.00004 Magnesium (dissolved) [mg/L] 54.4 3.84 3.98 Manganese (dissolved) [mg/L] 6.03 0.180 0.172 Molybdenum (dissolved) [mg/L] 0.00098 0.00016 0.00011 Nickel (dissolved) [mg/L] 0.0079 0.0007 0.0007 Phosphorus (dissolved) [mg/L] 0.011 < 0.003 < 0.003 Potassium (dissolved) [mg/L] 24.4 2.13 2.04 Selenium (dissolved) [mg/L] 0.00043 0.00008 0.00006 Silicon (dissolved) [mg/L] 6.47 2.93 2.84 Silver (dissolved) [mg/L] < 0.000002 < 0.000002 < 0.000002 Sodium (dissolved) [mg/L] 67.7 11.0 10.3 Sulfur (dissolved) [mg/L] 43.4 5.8 6.1 Thallium (dissolved) [mg/L] 0.000044 < 0.000005 < 0.000005 Tin (dissolved) [mg/L] < 0.00001 < 0.00001 < 0.00001 Titanium (dissolved) [mg/L] 0.00086 0.00061 0.00040 Vanadium (dissolved) [mg/L] 0.00094 0.00037 0.00038 Zinc (dissolved) [mg/L] 0.003 1.02 1.17 0000678904

OnLine LIMS Page 3 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA10075-APR16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

______Brian Graham B.Sc. Project Specialist Environmental Services, Analytical

0000678904 OnLine LIMS Page 4 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365 12-May-2016 Cambium Inc. Attn : Dave Bucholtz Date Rec. : 30 April 2016 LR Report: CA10076-APR16 52 Hunter Street East, Peterborough Reference: 4713-007 Irondale SW Canada, K9H 1G5 Phone: 705-742-7900, Fax:705-742-7907 Copy: #1

CERTIFICATE OF ANALYSIS Final Report

Analysis 3: 4: 5: 6: 7: 8: 9: Analysis Analysis SW1 SW2 SW3 SW4 QA/QC Approval Approval Date Time

Sample Date & Time 27-Apr-16 10:45 27-Apr-16 08:15 27-Apr-16 11:00 27-Apr-16 09:50 27-Apr-16 Temperature Upon Receipt [°C] -- --- 6.0 6.0 6.0 6.0 6.0 Alkalinity [mg/L as CaCO3] 02-May-16 12:31 3 8 6 6 7 Conductivity [uS/cm] 02-May-16 12:31 17 25 24 26 26 pH [no unit] 02-May-16 12:31 6.34 6.81 6.95 7.04 6.99 Temperature @ pH [°C] 02-May-16 12:31 17.7 18.2 18.8 18.2 17.7 Total Dissolved Solids [mg/L] 02-May-16 09:51 49 49 34 34 40 Total Suspended Solids [mg/L] 02-May-16 14:55 < 2 2 2 4 4 Turbidity [NTU] 29-Apr-16 13:50 0.71 1.11 1.23 2.43 2.75 Total Organic Carbon [mg/L] 29-Apr-16 11:57 9.9 8.8 9.4 7.4 7.4 Biochemical Oxygen Demand (BOD5) [mg/L] 03-May-16 13:11 < 4 < 4 < 4 < 4 < 4 Chemical Oxygen Demand [mg/L] 02-May-16 14:45 26 25 27 < 8 24 4AAP-Phenolics [mg/L] 29-Apr-16 09:26 0.001 0.002 0.001 0.001 0.004 Chloride [mg/L] 05-May-16 15:25 2 2 2 2 2 Unionized Ammonia [mg/L as N] 03-May-16 13:12 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Ammonia+Ammonium (N) [mg/L] 29-Apr-16 10:22 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate [mg/L] 05-May-16 15:37 < 1 < 1 < 1 1 1 0000678900 Nitrite (as N) [mg/L] 04-May-16 13:50 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03

OnLine LIMS Page 1 of 3 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA10076-APR16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 3: 4: 5: 6: 7: 8: 9: Analysis Analysis SW1 SW2 SW3 SW4 QA/QC Approval Approval Date Time

Nitrate (as N) [mg/L] 04-May-16 13:50 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Total Kjeldahl Nitrogen [as N mg/L] 29-Apr-16 12:30 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 Mercury (total) [mg/L] 02-May-16 07:54 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Hardness [mg/L as CaCO3] 04-May-16 10:02 5.7 8.9 8.9 9.4 9.2 Aluminum (total) [mg/L] 04-May-16 10:02 0.073 0.082 0.084 0.121 0.116 Arsenic (total) [mg/L] 04-May-16 10:02 < 0.0002 < 0.0002 < 0.0002 < 0.0002 < 0.0002 Barium (total) [mg/L] 04-May-16 10:02 0.00756 0.00843 0.00848 0.0107 0.0105 Beryllium (total) [mg/L] 04-May-16 10:02 0.000008 0.000008 0.000013 0.000010 0.000009 Boron (total) [mg/L] 04-May-16 10:02 0.005 0.019 0.019 0.023 0.024 Cadmium (total) [mg/L] 04-May-16 10:02 0.000011 0.000006 0.000013 0.000014 0.000020 Calcium (total) [mg/L] 04-May-16 10:02 1.76 2.63 2.64 2.67 2.62 Chromium (total) [mg/L] 04-May-16 10:02 0.00048 0.00046 0.00045 0.00048 0.00049 Copper (total) [mg/L] 04-May-16 10:02 0.00038 0.00040 0.00018 0.00038 0.00031 Iron (total) [mg/L] 04-May-16 10:02 0.362 0.421 0.311 0.672 0.651 Lead (total) [mg/L] 04-May-16 10:02 0.00029 0.00029 0.00020 0.00032 0.00027 Magnesium (total) [mg/L] 04-May-16 10:02 0.318 0.572 0.565 0.662 0.648 Manganese (total) [mg/L] 04-May-16 10:02 0.00712 0.0183 0.0146 0.0297 0.0287 Phosphorus (total) [mg/L] 04-May-16 10:02 0.009 0.007 0.016 0.019 0.016 Potassium (total) [mg/L] 04-May-16 10:02 0.170 0.279 0.284 0.354 0.347 Selenium (total) [mg/L] 04-May-16 10:02 0.00005 < 0.00004 0.00006 0.00005 0.00004 Silver (total) [mg/L] 04-May-16 10:02 0.000002 0.000002 < 0.000002 0.000002 < 0.000002 Sodium (total) [mg/L] 04-May-16 10:02 1.03 1.21 1.17 1.44 1.46 Zinc (total) [mg/L] 04-May-16 10:02 0.004 0.003 0.004 0.005 0.005

0000678900 OnLine LIMS Page 2 of 3 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA10076-APR16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

______Brian Graham B.Sc. Project Specialist Environmental Services, Analytical

0000678900 OnLine LIMS Page 3 of 3 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365 15-July-2016 Cambium Inc. Attn : Dave Bucholtz Date Rec. : 05 July 2016 LR Report: CA14093-JUL16

Reference: 52 Hunter Street East, Peterborough 4713-007 Irondale SW Canada, K9H 1G5 Phone: 705-742-7900, Fax:705-742-7907 Copy: #1

CERTIFICATE OF ANALYSIS Final Report

Analysis 3: 4: 5: 6: 7: Analysis Analysis SW1 SW3 SW QA/QC Approval Approval Date Time Sample Date & Time 05-Jul-16 12:45 05-Jul-16 13:00 05-Jul-16 Temperature Upon Receipt [°C] ------18.0 18.0 18.0 Alkalinity [mg/L as CaCO3] 08-Jul-16 09:29 7 4 7 pH [no unit] 08-Jul-16 09:29 6.44 5.94 6.47 Temperature @ pH [°C] 08-Jul-16 09:29 18.2 18.2 18.2 Total Dissolved Solids [mg/L] 07-Jul-16 15:32 54 46 75 Total Suspended Solids [mg/L] 11-Jul-16 16:35 26 5 26 Turbidity [NTU] 07-Jul-16 11:25 2.94 1.96 1.79 Total Organic Carbon [mg/L] 15-Jul-16 16:28 16 12 18 Biochemical Oxygen Demand (BOD5) [mg/L] 12-Jul-16 14:46 < 4 < 4 < 4 Chemical Oxygen Demand [mg/L] 08-Jul-16 09:36 58 53 63 4AAP-Phenolics [mg/L] 07-Jul-16 11:48 0.001 0.001 0.001 Chloride [mg/L] 12-Jul-16 10:10 2 < 1 2 Ammonia+Ammonium (N) [mg/L] 07-Jul-16 11:56 < 0.1 < 0.1 < 0.1 Unionized Ammonia [mg/L as N] 12-Jul-16 10:05 < 0.001 < 0.001 < 0.001 Sulphate [mg/L] 12-Jul-16 16:52 < 1 < 1 < 1 Nitrite (as N) [mg/L] 12-Jul-16 16:42 < 0.03 < 0.03 < 0.03 Nitrate (as N) [mg/L] 12-Jul-16 16:42 < 0.06 < 0.06 < 0.06 Total Kjeldahl Nitrogen [as N mg/L] 12-Jul-16 15:09 < 0.5 < 0.5 0.7 Mercury (total) [mg/L] 08-Jul-16 08:35 < 0.00001 < 0.00001 < 0.00001 Hardness [mg/L as CaCO3] 08-Jul-16 11:08 12.1 6.8 11.6 Aluminum (total) [mg/L] 08-Jul-16 11:08 0.175 0.098 0.173 Arsenic (total) [mg/L] 08-Jul-16 11:08 0.0004 0.0004 0.0004 Barium (total) [mg/L] 08-Jul-16 11:08 0.0139 0.0102 0.0141 Beryllium (total) [mg/L] 08-Jul-16 11:08 0.000012 0.000011 0.000012 Boron (total) [mg/L] 08-Jul-16 11:08 0.005 0.006 0.003 Cadmium (total) [mg/L] 08-Jul-16 11:08 0.000015 0.000020 0.000019

Calcium (total) [mg/L] 08-Jul-16 11:08 3.72 2.07 3.50 0000733607 Chromium (total) [mg/L] 08-Jul-16 11:08 0.00081 0.00051 0.00079

OnLine LIMS Page 1 of 2 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA14093-JUL16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 3: 4: 5: 6: 7: Analysis Analysis SW1 SW3 SW QA/QC Approval Approval Date Time Copper (total) [mg/L] 08-Jul-16 11:08 0.00027 0.00037 0.00029 Iron (total) [mg/L] 08-Jul-16 11:08 1.50 2.62 1.46 Lead (total) [mg/L] 08-Jul-16 11:08 0.00065 0.00034 0.00065 Magnesium (total) [mg/L] 08-Jul-16 11:08 0.673 0.401 0.688 Manganese (total) [mg/L] 08-Jul-16 11:08 0.0264 0.0523 0.0234 Phosphorus (total) [mg/L] 08-Jul-16 11:08 0.029 0.034 0.026 Potassium (total) [mg/L] 08-Jul-16 11:08 0.054 0.160 0.054 Selenium (total) [mg/L] 08-Jul-16 11:08 0.00006 0.00008 0.00008 Silver (total) [mg/L] 08-Jul-16 11:08 < 0.000002 < 0.000002 < 0.000002 Sodium (total) [mg/L] 08-Jul-16 11:08 0.76 0.35 0.77 Zinc (total) [mg/L] 08-Jul-16 11:08 0.006 0.007 0.006

______Brian Graham B.Sc. Project Specialist Environmental Services, Analytical

0000733607 OnLine LIMS Page 2 of 2 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365 18-October-2016 Cambium Inc. Attn : Dave Bucholtz Date Rec. : 11 October 2016 LR Report: CA14158-OCT16 52 Hunter Street East, Peterborough Reference: 4713-007 Irondale SW Canada, K9H 1G5 Phone: 705-742-7900, Fax:705-742-7907 Copy: #1

CERTIFICATE OF ANALYSIS Final Report

Analysis 1: 2: 3: 4: 5: 6: 7: 8: 9: Analysis Analysis Start Analysis Analysis SW1 SW2 SW3 SW4 QAQC Start Date Time Approval Approval Date Time Sample Date & Time 11-Oct-16 16:00 11-Oct-16 15:30 11-Oct-16 16:00 11-Oct-16 15:50 11-Oct-16 Temperature Upon Receipt [°C] 15.0 15.0 15.0 15.0 15.0 Alkalinity [mg/L as CaCO3] 12-Oct-16 15:05 17-Oct-16 15:01 7 15 5 9 6 pH [no unit] 12-Oct-16 15:05 17-Oct-16 15:01 6.73 7.03 6.39 6.85 6.16 Conductivity [uS/cm] 12-Oct-16 15:05 17-Oct-16 15:01 24 45 20 36 21 Temperature @ pH [°C] 12-Oct-16 15:05 17-Oct-16 15:01 22.3 22.3 22.0 21.3 21.3 Total Dissolved Solids [mg/L] 12-Oct-16 12:18 14-Oct-16 08:32 46 63 66 60 49 Total Suspended Solids [mg/L] 12-Oct-16 10:25 13-Oct-16 13:48 3 3 6 3 6 Turbidity [NTU] 12-Oct-16 15:00 13-Oct-16 08:35 2.34 1.53 2.81 2.99 2.84 Total Organic Carbon [mg/L] 13-Oct-16 07:00 14-Oct-16 11:41 17 18 14 14 14 Biochemical Oxygen Demand (BOD5) [mg/L] 12-Oct-16 17:51 17-Oct-16 14:40 < 4 < 4 < 4 < 4 4 Chemical Oxygen Demand [mg/L] 12-Oct-16 09:46 13-Oct-16 08:52 53 51 37 38 43 4AAP-Phenolics [mg/L] 12-Oct-16 10:15 13-Oct-16 13:44 0.002 0.002 0.002 0.002 0.002 Chloride [mg/L] 13-Oct-16 08:09 14-Oct-16 09:01 2 2 1 2 1 Ammonia+Ammonium (N) [mg/L] 12-Oct-16 12:04 13-Oct-16 11:26 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Unionized Ammonia [mg/L as N] 12-Oct-16 12:04 17-Oct-16 15:02 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 Sulphate [mg/L] 13-Oct-16 08:10 14-Oct-16 09:01 < 1 < 1 < 1 < 1 < 1 Nitrite (as N) [mg/L] 15-Oct-16 08:23 17-Oct-16 13:02 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 Nitrate (as N) [mg/L] 15-Oct-16 08:23 17-Oct-16 13:02 < 0.06 < 0.06 < 0.06 < 0.06 < 0.06 Total Kjeldahl Nitrogen [as N mg/L] 12-Oct-16 17:41 13-Oct-16 16:49 0.5 0.5 0.6 0.5 0.7 0000809311 Mercury (total) [mg/L] 13-Oct-16 15:52 14-Oct-16 09:17 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001

OnLine LIMS Page 1 of 2 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA14158-OCT16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 1: 2: 3: 4: 5: 6: 7: 8: 9: Analysis Analysis Start Analysis Analysis SW1 SW2 SW3 SW4 QAQC Start Date Time Approval Approval Date Time Hardness [mg/L as CaCO3] 13-Oct-16 17:06 14-Oct-16 15:37 11.8 20.8 8.91 15.3 8.94 Aluminum (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.099 0.098 0.093 0.139 0.094 Arsenic (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.0003 0.0003 0.0003 0.0003 0.0003 Barium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.0104 0.0147 0.0100 0.0145 0.00993 Beryllium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.000009 0.000008 0.000012 0.000013 0.000009 Boron (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.017 0.051 0.011 0.037 0.010 Cadmium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.000007 0.000012 0.000008 0.000013 0.000017 Calcium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 3.82 6.22 2.75 4.56 2.76 Chromium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.00053 0.00052 0.00049 0.00055 0.00042 Copper (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.00018 0.00019 0.00048 0.00035 0.00041 Iron (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.995 1.15 1.18 1.26 1.14 Lead (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.00041 0.00033 0.00018 0.00039 0.00019 Magnesium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.559 1.29 0.496 0.951 0.500 Manganese (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.00905 0.0660 0.0192 0.0150 0.0191 Phosphorus (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.011 0.010 0.042 0.035 0.075 Potassium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.238 0.612 0.431 0.613 0.455 Selenium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.00008 0.00010 0.00005 0.00009 0.00007 Silver (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.75 1.44 0.64 1.68 0.63 Zinc (total) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:37 0.005 0.007 0.007 0.005 0.007

______Brian Graham B.Sc. Project Specialist Environmental Services, Analytical

0000809311 OnLine LIMS Page 2 of 2 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365 18-October-2016 Cambium Inc. Attn : Dave Bucholtz Date Rec. : 11 October 2016 LR Report: CA14159-OCT16 52 Hunter Street East, Peterborough Reference: 4713-007 Irondale GW Canada, K9H 1G5 Phone: 705-742-7900, Fax:705-742-7907 Copy: #1

CERTIFICATE OF ANALYSIS Final Report

Analysis 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: Analysis Start Analysis Start Analysis Analysis 98-5 98-6 98-7 98-8 98-11 98-12 Date Time Approval Date Approval Time Sample Date & Time 11-Oct-16 15:30 11-Oct-16 15:00 11-Oct-16 15:25 11-Oct-16 14:50 11-Oct-16 14:40 11-Oct-16 14:00 Temperature Upon Receipt [°C] 15.0 15.0 15.0 15.0 15.0 15.0 Alkalinity [mg/L as CaCO3] 12-Oct-16 15:05 13-Oct-16 12:08 104 172 22 23 698 43 Conductivity [uS/cm] 12-Oct-16 15:05 13-Oct-16 12:08 275 415 58 87 1450 194 pH [no unit] 12-Oct-16 15:05 13-Oct-16 12:08 7.25 7.72 7.01 6.89 7.81 7.18 Total Dissolved Solids [mg/L] 12-Oct-16 12:18 14-Oct-16 08:32 169 269 60 80 1060 117 Dissolved Organic Carbon [mg/L] 13-Oct-16 07:00 14-Oct-16 11:41 6 5 7 3 20 3 Chemical Oxygen Demand [mg/L] 12-Oct-16 09:46 13-Oct-16 08:52 19 13 25 27 58 8 4AAP-Phenolics [mg/L] 12-Oct-16 10:15 13-Oct-16 13:44 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 Chloride [mg/L] 13-Oct-16 08:09 14-Oct-16 09:02 3 3 1 10 44 37 Ammonia+Ammonium (N) [mg/L] 12-Oct-16 12:04 13-Oct-16 11:27 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 < 0.1 Sulphate [mg/L] 13-Oct-16 08:10 14-Oct-16 09:56 36 38 4 2 100 12 Nitrite (as N) [mg/L] 15-Oct-16 08:23 17-Oct-16 13:02 < 0.03 < 0.03 < 0.03 < 0.03 0.29 < 0.03 Nitrate (as N) [mg/L] 15-Oct-16 08:23 17-Oct-16 13:02 < 0.06 0.16 < 0.06 < 0.06 3.46 0.10 Phosphorus (total reactive) [mg/L] 12-Oct-16 12:00 13-Oct-16 10:17 0.10 < 0.03 0.19 0.29 < 0.03 < 0.03 Hardness (dissolved) [mg/L as CaCO3] 13-Oct-16 17:06 14-Oct-16 15:38 137 220 26.0 17.3 701 61.8 Aluminum (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.020 0.004 0.229 0.003 0.015 0.021 Barium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.101 0.194 0.0179 0.00354 0.163 0.0348 Beryllium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.000012 < 0.000007 0.000014 < 0.000007 0.000010 0.000009

Boron (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.470 0.626 0.275 0.052 3.39 0.258 0000809316 OnLine LIMS Page 1 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA14159-OCT16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: Analysis Start Analysis Start Analysis Analysis 98-5 98-6 98-7 98-8 98-11 98-12 Date Time Approval Date Approval Time Cadmium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.000007 0.000005 0.000008 < 0.000003 0.000019 0.000012 Calcium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 42.5 68.5 8.64 4.97 223 20.3 Chromium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00050 0.00039 0.00094 0.00053 0.00064 0.00036 Cobalt (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.000143 0.000145 0.000104 0.000191 0.000582 0.000177 Copper (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00187 0.00083 0.00225 0.00018 0.00643 0.00100 Iron (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.130 1.26 0.149 3.90 0.028 0.154 Lead (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00001 0.00002 0.00007 0.00002 < 0.00001 < 0.00001 Magnesium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 7.48 11.9 1.08 1.20 34.9 2.70 Manganese (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.0170 0.0680 0.00185 0.699 0.0602 0.0169 Molybdenum (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00065 0.00125 0.00037 0.00002 0.00403 0.00108 Nickel (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.0003 0.0006 0.0002 0.0005 0.0059 0.0003 Phosphorus (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.003 0.004 0.006 < 0.003 0.006 < 0.003 Potassium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 4.00 3.60 0.829 0.340 28.6 0.677 Selenium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00007 < 0.00004 0.00008 < 0.00004 0.00029 0.00006 Silicon (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 3.83 5.95 1.85 1.19 3.73 2.63 Silver (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 < 0.000002 Sodium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 4.42 6.80 0.92 9.42 77.7 13.3 Sulfur (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 10.7 12.9 2.0 1.1 37.1 4.3 Thallium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.000022 < 0.000005 < 0.000005 < 0.000005 0.000021 0.000008 Tin (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 < 0.00001 Titanium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00011 0.00012 0.02001 0.00011 0.00134 0.00018 Vanadium (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.00191 0.00067 0.00271 0.00008 0.00388 0.00027 Zinc (dissolved) [mg/L] 13-Oct-16 17:06 14-Oct-16 15:38 0.003 < 0.002 0.003 0.002 0.002 0.003

Analysis 11: 12: MW12-13 GW QA/QC

Sample Date & Time 11-Oct-16 13:45 11-Oct-16 Temperature Upon Receipt [°C] 15.0 15.0 Alkalinity [mg/L as CaCO3] 30 628 Conductivity [uS/cm] 193 1450 pH [no unit] 7.05 7.88 Total Dissolved Solids [mg/L] 120 1010 Dissolved Organic Carbon [mg/L] 5 20 0000809316 Chemical Oxygen Demand [mg/L] 25 60 OnLine LIMS Page 2 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA14159-OCT16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

Analysis 11: 12: MW12-13 GW QA/QC

4AAP-Phenolics [mg/L] < 0.002 < 0.002 Chloride [mg/L] 26 44 Ammonia+Ammonium (N) [mg/L] < 0.1 < 0.1 Sulphate [mg/L] 20 100 Nitrite (as N) [mg/L] < 0.03 0.29 Nitrate (as N) [mg/L] 0.16 3.45 Phosphorus (total reactive) [mg/L] 0.12 < 0.03 Hardness (dissolved) [mg/L as CaCO3] 59.4 721 Aluminum (dissolved) [mg/L] 0.065 0.015 Barium (dissolved) [mg/L] 0.0451 0.156 Beryllium (dissolved) [mg/L] 0.000024 0.000010 Boron (dissolved) [mg/L] 0.328 3.46 Cadmium (dissolved) [mg/L] 0.000048 0.000015 Calcium (dissolved) [mg/L] 15.6 230 Chromium (dissolved) [mg/L] 0.00061 0.00065 Cobalt (dissolved) [mg/L] 0.000261 0.000604 Copper (dissolved) [mg/L] 0.00186 0.00655 Iron (dissolved) [mg/L] 0.099 0.023 Lead (dissolved) [mg/L] 0.00002 0.00016 Magnesium (dissolved) [mg/L] 4.98 35.5 Manganese (dissolved) [mg/L] 0.0973 0.0624 Molybdenum (dissolved) [mg/L] 0.00008 0.00432 Nickel (dissolved) [mg/L] 0.0004 0.0062 Phosphorus (dissolved) [mg/L] < 0.003 < 0.003 Potassium (dissolved) [mg/L] 1.44 28.9 Selenium (dissolved) [mg/L] 0.00009 0.00026 Silicon (dissolved) [mg/L] 3.14 3.70 Silver (dissolved) [mg/L] 0.000003 < 0.000002 Sodium (dissolved) [mg/L] 12.9 76.0 Sulfur (dissolved) [mg/L] 6.3 37.7 Thallium (dissolved) [mg/L] 0.000012 0.000021 Tin (dissolved) [mg/L] < 0.00001 < 0.00001 Titanium (dissolved) [mg/L] 0.00247 0.00114 Vanadium (dissolved) [mg/L] 0.00031 0.00363 Zinc (dissolved) [mg/L] 0.004 0.003 0000809316

OnLine LIMS Page 3 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

SGS Canada Inc. P.O. Box 4300 - 185 Concession St. LR Report : CA14159-OCT16 Lakefield - Ontario - KOL 2HO Phone: 705-652-2000 FAX: 705-652-6365

______Brian Graham B.Sc. Project Specialist Environmental Services, Analytical

0000809316 OnLine LIMS Page 4 of 4 Data reported represents the sample submitted to SGS. Reproduction of this analytical report in full or in part is prohibited without prior written approval. Please refer to SGS General Conditions of Services located at http://www.sgs.com/terms_and_conditions_service.htm. (Printed copies are available upon request.) Test method information available upon request. “Temperature Upon Receipt” is representative of the whole shipment and may not reflect the temperature of individual samples.

2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix E Historical Water Quality Data

Cambium Inc.

2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix F Site Photographs

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 1: Surface water monitoring station SW1, Photograph 2: Surface water monitoring station SW1, April 2016 July 2016

Photograph 3: Surface water monitoring station SW1, Photograph 4: Surface water monitoring station SW2, October 2016 April 2016

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 5: Surface water monitoring station SW2 Photograph 6: Surface water monitoring station SW2, (dry), July 2016 October 2016

Photograph 7: Surface water monitoring station SW3, Photograph 8: Surface water monitoring station SW3, April 2016 July 2016

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 9: Surface water monitoring station SW3, Photograph 10: Surface water monitoring station SW4, October 2016 April 2016

Photograph 11: Surface water monitoring station SW4, Photograph 12: Surface water monitoring station SW4, July 2016 October 2016

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 13: Monitoring well 98-5, April 2015 Photograph 14: Monitoring well 98-5, May 2014

Photograph 15: Monitoring well 98-6, April 2015 Photograph 16: Monitoring well 98-6, April 2016

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 17: Monitoring well 98-7, April 2016 Photograph 18: Monitoring well 98-7, April 2015

Photograph 19: Monitoring well 98-8, October 2016 Photograph 20: Monitoring well 98-8, April 2015

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 21: Monitoring well 98-9, April 2015 Photograph 22: Monitoring well 98-9, April 2016

Photograph 23: Monitoring well 98-11, April 2015 Photograph 24: Monitoring well 98-11, April 2016

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 25: Monitoring well 98-12, April 2016 Photograph 26: Monitoring well 98-12, April 2016

Photograph 27: Monitoring well OW-3, April 2016 Photograph 28: Monitoring well OW-3, April 2015

Cambium Inc. 2016 Annual Report, Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 2017

Photograph 29: Monitoring well MW12-13, April 2015 Photograph 30: Monitoring well MW12-13, October 2016

Photograph 31: Slope of waste mound looking north Photograph 32:Recent grading and cover material, west, November 2016 October 2016

Cambium Inc. 2016 Annual Report Irondale Waste Disposal Site The Corporation of the Township of Minden Hills Cambium Ref. No.: 4713-007 March 24, 2017

Appendix G Borehole Logs

Cambium Inc. ogdB:Input By: Logged By: 12 11 10 Contractor: -1 9 8 7 6 5 4 3 2 1 0

(ft) Location:

let rjc ae Project No.: Project Name: Depth Client: 3 2 1 0 (m) SUBSURFACE PROFILE www.cambium-env.com T: 705-742-7900 Peterborough, Ontario, K9H1G5 52 Hunter Street East P.O. Box 325 .Mcogl C. MacDougall C. MacDougall otlDiln Hollow Stem Auger 17T 6931114971640 Lithology DisposalSite Irondale Waste Pontil Drilling Township ofMindenHills ƵŐĞƌƌĞĨƵƐĂůĂƚϯ͘ϭϬŵ ƐĂŶĚ͕ƐŽŵĞƐŝůƚ͕ƐĂƚƵƌĂƚĞĚ ^ĂŶĚ͗ƌŽǁŶĨŝŶĞƚŽĐŽĂƌƐĞ ŵĞĚŝƵŵƐĂŶĚ͕ƐŽŵĞƐŝůƚ͕ĚƌLJ ^ĂŶĚ͗ƌŽǁŶĨŝŶĞƚŽ Description

ϭ Number

ϭ Type Method: SAMPLE UTM: ϯϬ % Recovery ϱϬ SPT (n) DisposalSite Irondale Waste

CSV (ppm)

PID (ppm) Log ofBorehole: Installation Well casing steel Lockable Cap Slip on Cap Slotted Slip on PVCScreenm x 0.05 m 1.52 Silica Sand Chips Bentonite Date Completed: Date Elevation: ϭϮͲϭϬͲϵсϮ͘ϳϱŵ ^ƚŝĐŬͲƵƉсϬ͘ϵϭŵ dĂŐη͗ϭϯϰϰϱϮ tĞůůĞƋƵŝƉƉĞĚ ;ĨƌŽŵŐƌŽƵŶĚ ŵĞĂƐƵƌĞĚŽŶ tĂƚĞƌůĞǀĞů ƚƵďŝŶŐĂŶĚ ǁŝƚŚ,W ĨŽŽƚǀĂůǀĞ Remarks Page ƐƵƌĨĂĐĞͿ MW12-13 349.38 mASL 9-Oct-12 2107-007 1 of1