Phase Ii Environmental Site Assessment – Donatville Receipt Meter Station File: 734-1718280602-Rep-V0006-02 | June 1, 2021 | Issued for Use

PHASE II ENVIRONMENTAL SITE ASSESSMENT Donatville Receipt Meter Station

2017 NOVA Gas Transmission Ltd. Abandonment Program Canada Energy Regulator Order ZO-N081-002-2018

PRESENTED TO NOVA Gas Transmission Ltd.

JUNE 1, 2021 ISSUED FOR USE FILE: 734-1718280602-REP-V0006-02

Third Party Disclaimer The content of this document is not intended for the use of, nor is it intended to be relied upon by any person, firm or corporation, other than the client and Tetra Tech Canada Inc. Tetra Tech Canada Inc. denies any liability whatsoever to other parties for damages or injury suffered by such third party arising from use of this document by them, without the express prior written authority of Tetra Tech Canada Inc. and our client. This document is subject to further restrictions imposed by the contract between the client and Tetra Tech Canada Inc. and these parties' permission must be sought regarding this document in all other circumstances. Confidential This document is for the confidential use of the addressee only. Any retention, reproduction, distribution or disclosure to parties other than the addressee is prohibited without the express written authorization of Tetra Tech Canada Inc.

Tetra Tech Canada Inc. Suite 110, 140 Quarry Park Blvd SE Calgary, AB T2C 3G3 CANADA

Tel 403.203.3355 Fax 403.203.3301

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Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

EXECUTIVE SUMMARY Tetra Tech Canada Inc. (Tetra Tech) was retained by NOVA Gas Transmission Ltd. (NGTL), a wholly-owned subsidiary of TransCanada PipeLines Limited, an affiliate of TC Energy Corporation, to complete a Phase II Environmental Site Assessment (ESA) during abandonment activities at the Donatville Receipt Meter Station (herein referred to as the Site) in SE-27-066-18 W4M, pursuant to Canada Energy Regulator (CER) Order ZO-N081-002-2018.The abandonment activities also included the 6.03 km long NPS 6 Donatville Lateral pipeline which ran northwest from the Site and ended at the associated side valve in NE-31-066-18 W4M. The objective of the Phase II ESA was to investigate the presence or absence of contamination at the areas of potential environmental concern (APECs).

The assessment at the Site that was conducted on October 2, 23 and 24, 2018, included the advancement of three test pits to a maximum depth of 3.5 m below grade. The subsurface soils that were observed included clay with trace to no coarse-grained material. Analytical results identified the soil samples that were collected as fine-grained, which was considered applicable to the subsurface soils across the Site.

Selected environmental quality guidelines (EQGs) for the assessment of soil analytical results were the most stringent federal and provincial guideline values based on agricultural area land use for fine-grained soils.

Results for all of the analysed contaminants of potential concern (COPCs) were below the assessment EQGs at the following APECs:

. Former aboveground dump tank,

. Former underground separator,

. Historical underground dump tank referred to as Drip Pit, and

No indications of potential contamination were observed within the side valve excavation.

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PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

TABLE OF CONTENTS

EXECUTIVE SUMMARY ...... I

1.0 INTRODUCTION ...... 1 1.1 Background ...... 1 1.2 Project Objectives ...... 1

2.0 SITE OVERVIEW ...... 1 2.1 Site Description ...... 1 2.2 Surrounding Land Use ...... 2 2.3 Proximity to Surface Water and Drinking Water Supplies ...... 2 2.4 Topography, Drainage, and Geological Setting...... 2

3.0 SELECTION OF REGULATORY GUIDELINES ...... 3 3.1 Environmental Regulatory Setting ...... 3

4.0 HEALTH AND SAFETY ...... 3

5.0 METHODOLOGY ...... 4 5.1 Soil Sampling ...... 4 5.2 Sampling Plan ...... 5 5.3 Quality Assurance / Quality Control ...... 5 5.3.1 Quality Control Samples ...... 5 5.3.2 Laboratory Analyses ...... 5

6.0 SAMPLING AND RESULTS SUMMARY ...... 5 6.1 Environmental Site Assessment ...... 6 6.2 Quality Assurance/Quality Control ...... 6

7.0 CLOSURE ...... 7

REFERENCES ...... 8

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PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX SECTIONS

TABLES

Table 1 Soil Sample Laboratory Analytical Results - Organics

FIGURES

2017 NGTL – Meter Station and Lateral Abandonment Program Donatville Receipt Meter Station and Side Valve Access Map Figure 1 Site Plan Showing Soil Analytical Results 2018

APPENDICES

Appendix A Meter Station Access Map Appendix B Site Plan Appendix C Tables Appendix D Test Pit Logs Appendix E Site Photographs Appendix F Laboratory Analytical Reports

iii

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LIMITATIONS OF REPORT The scope of this report is limited to the matters expressly covered and is intended solely for the client to whom it is addressed. Tetra Tech Canada Inc. makes no warranties, expressed or implied, including without limitation, as to the marketability of the site, or fitness for a particular use. The assessment was conducted using standard engineering and scientific judgment, principles and practices, within a practical scope and budget. It is partially based on the observations of the assessor during the site visit, in conjunction with archival information obtained from a number of sources, which are assumed to be correct. Except as provided, Tetra Tech Canada Inc. has made no independent investigations to verify the accuracy or completeness of the information obtained from secondary sources or personal interviews. Generally, the findings, conclusions, and recommendations are based on a limited amount of data (e.g., the number of sample points, and the number of samples submitted for laboratory analyses) interpolated between sampling points, and the actual conditions (e.g., the type, level, and extent of impacted media) on the property may vary from that described above. Any findings regarding site conditions different from those described above upon which this report is based will consequently change Tetra Tech Canada Inc.’s conclusions and recommendations.

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PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

1.0 INTRODUCTION

Tetra Tech Canada Inc. (Tetra Tech) was retained by NOVA Gas Transmission Ltd. (NGTL), a wholly-owned subsidiary of TransCanada PipeLines Limited, an affiliate of TC Energy Corporation, to complete a Phase II Environmental Site Assessment (ESA) during abandonment activities at the Donatville Receipt Meter Station (herein referred to as the Site) in SE-27-066-18 W4M . The abandonment activities also included the 6.03 km long NPS 6 Donatville Lateral pipeline which ran northwest from the Site and ended at the associated side valve in NE-31-066-18 W4M.

Abandonment activities at the Site were completed as part of the 2017 NGTL Abandonment Program, pursuant to Canada Energy Regulator (CER) Order ZO-N081-002-2018, issued to NGTL on February 16, 2018. The Order includes the abandonment of 15 meter stations and their associated lateral pipelines, eight standalone meter stations, and three standalone lateral pipelines in Alberta. Abandonment activities were completed by Secure Energy Service Inc. (Secure) and Boom Construction Ltd. (Boom) with environmental services provided by Tetra Tech. This report provides a summary of the Phase II ESA activities completed in support of abandonment at the Site. 1.1 Background

Environmental services provided by Tetra Tech to support the 2017 NGTL Abandonment Program included a Preliminary Assessment to identify materials that require special handling and / or disposal during the abandonment activities; a Phase I ESA to identify areas of potential environmental concern (APECs); and, a Phase II ESA to investigate actual or potential contamination identified in the Phase I ESA or during abandonment activities. Where contamination was identified, Tetra Tech supported remediation activities during abandonment, including directing the removal of soil and / or collection of confirmatory samples.

The Phase I ESA findings were summarized and provided to NGTL in a report, titled 2017 Phase 1 Environmental Site Assessment (ESA) Donatville Receipt Meter Station and Lateral, Alberta, and dated March 15, 2018. 1.2 Project Objectives

The objective of the Phase II ESA that was conducted during abandonment activities was to investigate the presence or absence of chemicals of potential concern (COPCs) at the APECs which were identified in the Phase I ESA and / or at areas of potential contamination observed during removal of the Site’s infrastructure.

This report summarizes the Phase II ESA activities and associated analytical results.

2.0 SITE OVERVIEW

2.1 Site Description

The Site is located in Athabasca County, Alberta, in an area that is primarily cultivated. The Site is located approximately 10 km south of Grassland, Alberta.

The Site is an approximately 60 m by 60 m square shaped lease on private land. The Site included an approximately 25 m by 45 m meter station yard, with gravel covering the ground surface, and the following infrastructure surrounded by a perimeter fence:

. Run Building,

. Instrument Building,

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. Communication Tower,

. Aboveground dump tank,

. Underground separator, and

. Various aboveground and underground piping and valves.

APECs and associated COPCs at the Site are summarized in the following table.

Table 2.1: Areas of Potential Environmental Concern and Chemicals of Potential Concern APEC COPC Former aboveground dump tank Petroleum hydrocarbons, PCBs, phenolics, metals Former underground separator Petroleum hydrocarbons, PCBs, phenolics, metals Historical underground dump tank referred to as Drip Pit Petroleum hydrocarbons, PCBs, phenolics, metals Lateral side valve actuator Petroleum hydrocarbons, metals Notes: 1. Petroleum hydrocarbons include: benzene, toluene, ethylbenzene, and xylenes (BTEX), petroleum hydrocarbon (PHC) Fractions F1 to F4, and polycyclic aromatic hydrocarbons (PAHs). 2. PCBs: polychlorinated biphenyls. 3. “Former” refers to infrastructure that existed at the Site at the time of abandonment activities. 4. ”Historical” refers to infrastructure that previously existed at the Site but was removed prior to the abandonment activities.

The undeveloped portion of the Site, outside of the perimeter fence, is primarily cultivated vegetation. The in-service date for the Site was September 1984, and operation was suspended on July 2016. As part of abandonment activities that were completed between September 23 and November 11, 2018, all of the Site infrastructure was removed. The surrounding land use is primarily cultivated. The Site is shown on a Meter Station Access Map in Appendix A and on Figure 1 in Appendix B. 2.2 Surrounding Land Use

The surrounding land uses at the Site included:

. North: Cultivated land.

. East: Oil and gas production facility and cultivated land beyond.

. South: Cultivated land.

. West: Cultivated land.

No residences exists within 300 m of the Site. 2.3 Proximity to Surface Water and Drinking Water Supplies

A review of the Alberta Water Well Information Database (AWWID) did not identify and water well records located within 300 m of the Site.

No surface water bodies exist within 300 m of the Site. 2.4 Topography, Drainage, and Geological Setting

The Site was situated in an area of low relief, sloping slightly towards the southwest.

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The Site is located in the Dry Mixedwood Natural Subregion, within the Boreal Forest Natural Region. The underlying bedrock in the Dry Mixedwood Subregion includes Upper Cretaceous shales, sandstones, and siltstone formations. Surficial materials in the area are moderately fine textured, moderately calcareous glacial till (Downing and Pettapiece, 2006).

3.0 SELECTION OF REGULATORY GUIDELINES

3.1 Environmental Regulatory Setting

The soil assessment environmental quality guidelines (EQGs) applied to the Site comprised:

. Alberta Environment and Parks (AEP), 2019. Alberta Tier 1 Soil and Groundwater Remediation Guidelines.

. Canadian Council of Ministers of the Environment (CCME), 2008 and updated online. Canadian Environmental Quality Guidelines.

. CCME, 2008. Canada-Wide Standard for Petroleum Hydrocarbons (PHC) in Soil.

. CCME, 2010. Canadian Environmental Quality Guidelines, Carcinogenic and Other Polycyclic Aromatic Hydrocarbons.

For assessment purposes, the most stringent federal and provincial guideline values were selected as the appropriate EQGs for evaluating laboratory analytical results for samples collected during investigation activities, consistent with guidance provided in the CER’s 2020 Remediation Process Guide. The EQG for fine-grained soils have been applied based on observed subsurface conditions at the Site. Agricultural land use is considered the most appropriate land use setting based on the characteristics of the surrounding lands. As no surface water body exists within 300 m of the Site’s boundaries, the protection of freshwater aquatic life (FAL) pathway does not need to be considered per the AEP guidelines (AEP, 2019).

Where exceedances of the assessment EQGs were identified, Section 6 may include a further evaluation of results with respect to site conditions, nearby receptors, and specific exposure pathways in order to further assess potential risk to humans and / or the environment.

4.0 HEALTH AND SAFETY

Secure administered the health and safety requirements of the abandonment program, with support from NGTL. Secure developed a site-specific health and safety plan for each of the meter stations included in the abandonment program that addressed issues such as:

. Personal protective equipment.

. Personal safety around heavy equipment.

. Safe handling of impacted soil, waste materials, and equipment.

. Housekeeping practices.

. Safety meeting requirements.

. Emergency response and contact information.

Underground utility locates and stake outs were coordinated by Secure and NGTL and were completed prior to the commencement of on-site work.

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Site-specific safety and orientation meetings were held upon arrival at each site, and sampling requirements and methods were discussed with Secure’s site supervisor and NGTL’s site representative prior to conducting work.

5.0 METHODOLOGY

5.1 Soil Sampling

Test pits were advanced at the APECs with a tracked excavator which was operated by Secure, and under the direction of Tetra Tech. Where soil samples were collected to assess potential contamination associated with infrastructure removed during abandonment, the uppermost samples were collected directly underneath former infrastructure (i.e., at the most likely point of contamination), with additional sample(s) collected at depths below the infrastructure to assess vertically. Tetra Tech collected soil samples that were recovered from the test pits with the excavator bucket during the assessment activities.

The soil samples were submitted for laboratory analysis of a selection of the COPCs that were identified at the APECs, specifically, petroleum hydrocarbons. If impacts were identified in the soil samples additional COPCs, specifically phenolics and metals, were analyzed.

During the abandonment program, sample locations were measured in the field relative to fixed infrastructure such as fencing using a measuring tape and / or measuring wheel and surveyed using a Global Position System (GPS) with a horizontal accuracy of approximately 2 m or less. The depths of the soil samples that were collected were measured from the surface of the soils at the meter station, because the surface gravel was removed prior to the execution of the assessment activities.

To screen for the potential presence of volatile petroleum hydrocarbon (PHC) constituents, soil samples were collected for headspace combustible vapour concentration measurements. These measurements were recorded using a portable RKI Eagle™ combustible gas indicator calibrated on a daily basis to hexane and set on methane elimination mode. When using the RKI Eagle™, if vapour concentrations exceed 500 ppm, they are measured as a percentage of the Lower Explosive Limit (LEL). One percent (1%) LEL is approximately equal to 110 ppm for hexane. It should be noted that the headspace test is a semi-quantitative screening method and can only be considered to represent relative volatile contaminant concentrations.

The sampling instruments were washed in soapy water, and rinsed with distilled water after the collection of each sample to prevent cross-contamination between samples. Soil samples were placed in clean samples containers, labelled, and sealed. New, clean, disposable nitrile gloves were worn when handling samples or sampling equipment. Gloves were changed between the collection of each sample to minimize the potential for cross- contamination.

A unique sample identification number was assigned to each sample in general accordance with the following format:

Site-Material Type-Sample #-Year

Site-Material Type-Sample #-Year-depth

For example, the first discrete soil sample was identified as:

DNTVL-SOIL-03-18-0.0

Sample jars and bags were labelled using permanent marker or printed labels. Samples were stored in ice-chilled coolers (as required) until delivery to the analytical laboratory.

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Soil samples for benzene, toluene, ethylbenzene, and xylenes (BTEX) and PHC fraction F1 analyses were recovered using dedicated laboratory-supplied soil syringes. Each approximate 6 gram soil sample was extruded into a laboratory-supplied vial pre-charged with methanol. The vial was capped and shaken to ensure that the soil was submerged in the methanol. For the remaining analytical parameters, each sample was placed into a laboratory-supplied sample jar or bag. 5.2 Sampling Plan

Soil samples collected during the Phase II ESA included:

. Two soil samples were collected at depths of 0 m and 0.5 m below grade beneath the former aboveground dump tank and submitted for analysis of BTEX, PHC fractions F1 to F4, and polycyclic aromatic hydrocarbons (PAHs). The soil sample collected at a depth of 0.5 m below grade was also submitted for particle size analysis.

. Three soil samples, including one duplicate, were collected at depths of 2.5 m and 3 m below grade beneath the former underground separator and submitted for analysis of BTEX, PHC fractions F1 to F4, PAHs, and polychlorinated biphenyls (PCBs).

. Two soil samples were collected at depths of 1.5 m and 2 m below grade beneath the historical underground dump tank referred to as Drip Pit, and submitted for analysis of BTEX, PHC fractions F1 to F4, PAHs, and PCBs. The soil sample collected at a depth of 2 m below grade was also submitted for particle size analysis. 5.3 Quality Assurance / Quality Control

5.3.1 Quality Control Samples Each laboratory report included a quality assurance report, which was reviewed by Tetra Tech using a Tetra Tech quality checklist to assist in determining whether the laboratory and field quality control measures were within acceptable parameters.

Duplicate samples were collected from various representative locations throughout the program. The frequency of duplicate samples for soil was approximately one for every 10 samples submitted for laboratory analyses. Duplicates were prepared in the field by collecting a sample and splitting it into two sample sets. The duplicate sample was labelled using the same identification number with the addition of “DUP” at the end of the identification.

Quality control samples were not collected at every meter station during the abandonment program but were collected from select meter stations to represent the overall abandonment program as typically less than 10 samples of soil were collected at each meter station.

An equipment blank was not collected because soil sampling equipment was not used during the Phase II ESA activities and soil samples were collected with a gloved hand.

5.3.2 Laboratory Analyses Upon completion of sampling activities, samples were delivered, along with laboratory chain-of-custody documentation, to AGAT Laboratories (AGAT) in Calgary or Edmonton, Alberta for analysis. AGAT is accredited by the Canadian Association for Laboratory Accreditation (CALA) for all analyses.

6.0 SAMPLING AND RESULTS SUMMARY

The results of the assessment are provided in the following sub-sections. The Phase II ESA activities were completed on October 2, 23 and 24, 2018. A site plan showing Phase II ESA activities at the former aboveground dump tank, the former underground separator, and the historical underground dump tank referred to as Drip Pit is provided as Figure 1 in Appendix B. The sample analytical results and combustible headspace vapour concentration

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measurements are summarized in Table 1 in Appendix C. Test pit logs are provided in Appendix D. Select photographs taken of the Site and sample locations are provided in Appendix E. Copies of the laboratory analytical reports are provided in Appendix F. 6.1 Environmental Site Assessment

The assessment at the Site included the advancement of three test pits to a maximum depth of 3.5 m below grade. The surficial and subsurface soils that were observed included clay with trace to no coarse-grained material. Analytical results identified the soil samples that were collected beneath the former aboveground dump tank at a depth of 0.5 m below grade, and beneath the historical underground dump tank referred to as Drip Pit at a depth of 2 m below grade as fine-grained, which was considered applicable to the subsurface soils across the Site.

Laboratory analytical results for samples collected at Site APECs are summarized below:

Results for all of the analysed COPCs were below the assessment EQGs at the following APECs:

. Former aboveground dump tank,

. Former underground separator, and

. Historical underground dump tank referred to as Drip Pit.

No indications of staining were observed at the excavation of the associated side valve in NE-31-066-18 W4M. Further, soil adjacent to the side valve actuator was reported by NGTL to have been hydro-excavated and transported to an appropriate off-site disposal facility. Therefore, residual contamination was considered unlikely and soil samples were not collected for laboratory analysis. 6.2 Quality Assurance/Quality Control

All of the laboratory’s calibration checks, quality control standard recoveries, and spikes were within the laboratory’s quality control limits. Copies of the laboratory analytical reports are provided in Appendix F.

One duplicate soil sample was collected during the abandonment activities. The relative percent difference (RPDDUP) for soil sample DNTVL-SOIL-04-18-3.0 and its duplicate DNTVL-SOIL-04-18-3.0DUP could not be calculated because there were no parameter concentrations greater than five times the laboratory detection limits.

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7.0 CLOSURE

We trust this report meets your present requirements. If you have any questions or comments, please contact the undersigned.

Respectfully submitted, Tetra Tech Canada Inc.

Prepared by: Authorized by: Michel Grégoire, P.Eng. Ciro Longobardi, P.Eng. Senior Environmental Engineer Environmental Engineer Infrastructure and Environment Infrastructure and Environment Direct Line: 204.781.4617 Direct Line: 403.863.9543 [email protected] [email protected]

MG/cl

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REFERENCES Alberta Environment and Parks, 2019. Alberta Tier 1 Soil and Groundwater Remediation Guidelines.

Canada Energy Regulator, 2020. Remediation Process Guide.

Canadian Council of Ministers of the Environment, 2008 and updated online. Canadian Environmental Quality Guidelines.

Canadian Council of Ministers of the Environment, 2008. Canada-Wide Standard for Petroleum Hydrocarbons (PHC) in Soil.

Canadian Council of Ministers of the Environment, 2010. Canadian Environmental Quality Guidelines, Carcinogenic and Other Polycyclic Aromatic Hydrocarbons.

Canadian Council of Ministers of the Environment, 2016. Guidance Manual for Environmental Site Characterization in Support of Environmental and Human Health Risk Assessment, Volume 1 Guidance Manual.

Downing, D.J. and W.W. Pettapiece (compilers), 2006. Natural Regions and Subregions of Alberta.

Government of Alberta, 2018. Alberta Water Well Information Database.

Midwest Surveys Inc., 2017. 2017 NGTL – Meter Station and Lateral Abandonment Program Donatville Receipt Meter Station and Side Valve Access Map.

Tetra Tech Canada Inc., 2018. Phase 1 Environmental Site Assessment (ESA) Donatville Receipt MS.

TransCanada PipeLines Limited, 2017. Donatville Receipt Meter Station, Plot Plan, B1-0470-1-01.

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APPENDIX A

METER STATION ACCESS MAP

2017 NGTL – Meter Station and Lateral Abandonment Program Donatville Receipt Meter Station and Side Valve Access Map

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TS855 Rge.21 Rge.20 Rge.19 Rge.18 Rge.17 Rge.16 Rge.15 18 18 17 16 15 14 13 HORSE L A C L A 15 14 13 SPRUCE LAKE BICHE OAKLEY VALLEY Twp.68 CHARRON GARNER PLAMONDON LAKE LAKE JACKFISH ORCHID FEN 858 LAKE TS

PROSPERITY GRASSLAND -,63 ATMORE -,55

SAKAYO Twp.67 OAKLEY DAKIN GRENIER LAKE LAKE LAKE

DAKIN SANDHILL LAKE LAKE

SARRAIL POWDER 10 11 12 7 FRAINS LAKE 10 11 12 7 8 9 DONATVILLE AMBER WARD 55 63 -, VALLEY -, LAKE KINOSIU AUGER LOFTY LAKE LAKE LAKE LODGE LAKE Twp.66 TS855 BURNT TWP. ROAD 67-0 LAKE TWP. ROAD 67-0 DAKIN NORTH (UNDEVELOPED) PAXSON BUCK WINDFALL CROSSCUT LAKE LAKE LAKE DONATVILLE LATERAL ATHABASCA COUNTY LAKE ATHABASCA COUNTY HOPE SIDE VALVE +/- 4.80 km LAKE CHUMP NORTH NORAL +/- 0.44 km FLAT LAKE BUCK LAKE LAKE SKELETON LAKE TRAPEZE 6 LAKE 3 2 ROAD PLAN 167 EO 5 4 3 2 1 TS663 CASLAN Twp.65 MEWATHA

ATHABASCA COUNTY BEACH CORDWOOD WINDY LAKE +/- 1.64 km BOYLE BONDISS LAKE LITTLE 17th BASE LINE BEAVER LAKE 663 KINIKINIK 63 CORNER TS -, LAKE KINIKINIK AMISK LAKE LAKE KIKINO 831 BUFFALO METIS TS LAKE METIS SETTLEMENT SETTLEMENT Twp.64 J I M L A K E STRONACH LAKE RGE. ROAD 18-5 Location Plan RGE. ROAD 19-0 ATHABASCA COUNTY 36 1:500,000 34 36 32 34 35 33 ATHABASCA COUNTY +/- 0.77 km +/- 0.70 km RGE. ROAD 18-2 Legend ATHABASCA COUNTY Primary Highway First Nations Access Route TWP. ROAD 66-4 +/- 3.25 km ATHABASCA COUNTY Secondary Highway Metis Settlement Alternative Access Route +/- 0.61 km Minor Roads Parks / Protected Areas M C% Meter Station LAT: 54.747308 29 28 27 26 25 28 LONG: -112.803566 30 ROAD PLAN 167 EO Railways Communication Trenches WARD C%S Side Valve ! ATHABASCA COUNTY ! 63 LAKE Hydrology Power Transmission Line -, +/- 4.69 km !( Access Route Start / End Point River / Creek Gas Co-Op -,55 I# AGM DONATVILLE RECEIPT City / Town Licensed Pipeline Foreign Crossing Location METER STATION Licensed Pipeline (Foreign) ^_ 23 24 Water Crossing 21 22 23 24 19 20 21 22 Waterline ^_

BURIED COMMUNICATIONS CABLE ACCESS WITHIN METER SITE LIC# 80551-001, NGTL DONATVILLE RECEIPT TELUS NPS 20 ATMORE LATERAL LOOP PLAN 842 1576, NGTL 1:1,500 SE-5-67-18-W.4M METER STATION 66-18-4 66-19-4 C OF T: 162 115 496 LIC# 54778-002 / INTER PIPELINE LAT: 54.733739 OWNER(S): EDWARD DAVID PUSIARSKI & DONATVILLE LATERAL LIC# 54419-010 / ENBRIDGE PIPELINES LIC# 80240-044, NGTL LONG: -112.637493 SIDE VALVE LIC# 56699-020 / GRAND RAPIDS NPS 12 ATMORE LATERAL GLORIA ANN PUSIARSKI LIC# 56673-013 / GRAND RAPIDS LAT: 54.761877 +/- 0.03 km 14 13 16 LIC# 57441-00415 / ENBRIDGE PIPELINES14 13 18 17 16 15 LONG: -112.709202 LINES FROM WEST TO EAST ACCESS WITHIN ACCESS PLAN TWP. ROAD 67-0 O/H POWERLINE LIC# 80509-001 PLAN 842 1576, NGTL ATHABASCA COUNTY NPS 6 DONATVILLE LATERAL ALTALINK C OF T: 162 115 496 2017 NGTL - METER STATION AND LATERAL

NGTL ! +/- 4.80 km OWNER(S): EDWARD DAVID PUSIARSKI & ABANDONMENT PROGRAM GAS CO-OP ! GLORIA ANN PUSIARSKI ALTAGAS UTILITIES ! DONATVILLE RECEIPT METER STATION AND SIDE VALVE LIC# 20979-001 +/- 0.02 km

! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! CNRL ! ACCESS MAP 7 8 9 10 11 12 10 11 12 ! 9 NORTH

ACCESS WITHIN ACCESS PLAN ! GAS CO-OP BUCK WITHIN Twp.66 Rge.18-19 W.4M. PLAN 842 1274, CNRL ALTAGAS UTILITIES LAKE EXISTING ! APPROACH C OF T: 162 115 496 ! 0 900 1,800 3,600 LIC# 52321-003 TWP. ROAD 67-0 OWNER(S): EDWARD DAVID PUSIARSKI & Meters INTER PIPELINE (UNDEVELOPED) GLORIA ANN PUSIARSKI ! O/H POWERLINE O/H POWERLINE 1:60,000 ATHABASCA COUNTY FORTISALBERTA +/- 0.06 km ! FORTISALBERTA

+/- 0.44 km ! 2 1 4 3 2 1 6 5 4 3 LIC# 80509-001, NGTL ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! MIDWEST SURVEYS INC. NW-32- NPS 6 DONATVILLE LATERAL 2827 Sunridge Blvd. N.E. Calgary, Alberta RGE. ROAD 18-5 66-18-W.4M ATHABASCA COUNTY Phone: 403.244.7471 Fax: 403.244.2466 Online: www.midwestsurveys.com NE-31-66-18-W.4M +/- 0.77 km ª Email: [email protected] EXISTING LIC# 20979-002 (CNRL) BURIED COMMUNICATIONS CABLE APPROACH LIC# 20979-007 (CNRL) BURIED COMMUNICATION CABLE LIC# 14627-011 (MANITOK ENERGY) Date: March 06, 2017 Midwest Job No.: IA-0017-17-J2 Page 1 of 1 1:5,000 TELUS TELUS LINE FROM WEST TO EAST Drawn By: JDB Checked By: VPO REVISION 36 31 32 33 34 35 36 33 34 35 HOPE Midwest Plan: IA-0017-17-J2-TCPL_DonatvilleReceipt_MS_AccessMap_Rev0 0 LAKE * The information contained herein is compiled from various government and industry sources, subject to copyright, and includes but is not limited to: © Copyright, 2007 Valtus Imagery Services a division of Northwest Geomatics, © Government of Alberta 2007, © Department of Natural Resources Canada, Saskatchewan Land Information Services Corporation, SaskGeomatics Division, Copyright © 2000. All rights reserved. Midwest Surveys Inc. and its data suppliers provide no warranty regarding the accuracy or completeness of this information, and assume no liability for the interpretation or use thereof. PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX B

SITE PLAN

Figure 1 Site Plan Showing Soil Analytical Results 2018

Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx

CLIENT NOVA GAS TRANSMISSION LTD.

DRAWING DESCRIPTION NO. DATE DESCRIPTION PREPARED REVIEW DESIGN AUTHORIZE AUTHORIZED BY: CL CLIENT DRAWING NO. FIGURE 1: SITE PLAN SHOWING REVISIONS/ISSUE DRAFTING ENGINEERING DATE: 21.03.05 SOIL ANALYTICAL RESULTS 2018 DONATVILLE RECEIPT METER STATION NO. DESCRIPTION DESIGNED BY: KJ DRAWN BY: BG DRAWING NO. REV. REFERENCE DRAWINGS REVIEWED BY: KJ SCALE: 1:300 1718280602-SKT-V0078 00 A3 (432 x 279) PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX C

TABLES

Table 1 Soil Sample Laboratory Analytical Results - Organics

Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx

NOVAGas Transmission Ltd. Notes: Laboratory Detection Limits DNTVL-SOIL-05-18-2.0 DNTVL-SOIL-05-18-1.5 DNTVL-SOIL-04-18-3.0DUP DNTVL-SOIL-04-18-3.0 DNTVL-SOIL-04-18-2.5 DNTVL-SOIL-03-18-0.5 DNTVL-SOIL-03-18-0.0 Referenced Fine-Grained Sub-Soil EQG Referenced Fine-Grained Surface Soil EQG Referenced Fine-Grained Sub-Soil EQG Referenced Fine-Grained Surface Soil EQG f e d c b a ppm = parts per million per parts = ppm Not= -- analyzed / Not applicable NG No= guideline EQG Environmental= quality guidelines Analytical exceedances shown in Most stringent presentedof guidelines shown in Sample ID Canadian Council Ministers of theof Environment, 2010. Canadian Council Ministers of theof Environment, 2008. Canadian Council Ministers of of the Environment, 2008. Canadian Council Ministers of of the Environment, 2008. Alberta Environment and Parks, 2019. Alberta Environment and Parks, 2019. Date Sampled 24-Oct-18 24-Oct-18 23-Oct-18 23-Oct-18 23-Oct-18 02-Oct-18 02-Oct-18 d,e b bold c,e a text. Alberta Tier 1 Soil and Groundwater Remediation Guidelines Alberta Tier 1 Soil and Groundwater Remediation Guidelines Depth (m) Depth Sample Details Sample 2.0 1.5 3.0 2.5 0.5 0.0 bold text. Sample Location Underground Drip Aboveground Underground Canadian Environmental Quality Guidelines, Carcinogenic and Other Polycyclic Aromatic Hydrocarbons Dump TankDump Canadian Environmental Quality Guidelines Canada-Wide Standard for Petroleum Hydrocarbons in Soil(PHC) Canadian Environmental Quality Guidelines Separator Historical Historical Former Former Former Pit Sample Coordinates (GPS) atn/a Northing/Long Easting/Lat 54.733569 54.733648 54.733633 -112.637072 -112.637247 -112.637210 , for fine-grained sub-soil with Agricultural fine-grained,land for with sub-soil use. fine-grained, for surface Agricultural soilland with use. , for ,fine-grained for surface soil in an Agricultural land use setting. , for fine-grained, infor sub-soil an Agricultural land use setting. NG 10 10 15 10 -- 5 5 Headspace Vapour Concentration (ppm) Fine Fine NG NG NG ------Soil Texture , for fine-grained, for surface soil and in sub-soil an Agricultural land use setting. NG NG NG 37 42 ------Sieve Analysis - % > 75 microns (wet) <0.05 <0.05 <0.05 <0.05 <0.05 0.05 0.5 1.3 -- -- Total PCBs <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.0068 0.0068 <0.005 0.005 0.046 0.046 Benzene <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.08 0.08 0.52 0.52 0.05

, Agricultural. Toluene BTEX <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.018 0.018 0.073 0.073 0.01 Ethylbenzene <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 0.99 0.99 2.4 2.4 Total Xylenes <10 <10 <10 <10 <10 <10 <10 170 170 420 210 10 F1-BTEX Hydrocarbon Fractions Soil Sample Laboratory Analytical Results Organics- Donatville Receipt Meter Station SE-27-066-18- W4M <10 <10 <10 <10 <10 <10 230 150 300 150 10 20 F2 (>nC10-nC16) 2017 ProgramAbandonment NGTL 2,600 1,300 3500 1300 10 49 31 21 31 17 40 20 Abandonment SamplesAbandonment F3 (>nC16-nC34) Page 1 1 of 10,000 10,000 5,600 5,600 Table 1 <10 <10 <10 10 25 19 12 13 F4 (>nC34) <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 NG NG Acridine <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 NG NG Quinoline <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.005 0.013 0.014 Naphthalene <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.005 NG NG 2-Methylnaphthalene <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.005 320 NG Analytical Results (mg/kg) Acenaphthylene <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.005 0.28 0.33 Acenaphthene <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.02 0.25 0.4 Fluorene <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.046 0.02 0.11 Phenanthrene <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 0.004 2.5 1.3 Anthracene Polycyclic Aromatic Hydrocarbons <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.01 15.4 15.4 Fluoranthene <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.01 0.1 7.7 Pyrene <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.02 0.1 6.2 Benzo(a)anthracene <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 6.2 6.2 Chrysene f <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 0.03 0.1 3 Benzo(b&j)fluoranthene <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.02 0.64 0.1 Benzo(k)fluoranthene <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 0.03 0.60 0.60 Benzo(a)pyrene <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.02 0.1 51 Indeno(1,2,3-cd)pyrene <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.005 0.1 4.4 Dibenz(a,h)anthracene <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 130 NG Benzo(g,h,i)perylene 17182806.02-AnalyticalResults Donatville final.xlsx 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 5.3 5.3 B(a)P TPE <1.0 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 <1 IACR Coarse <1.0 0.11 0.11 0.11 0.11 0.11 0.11 0.11 0.11 <1 IACR Fine 2021-06-01 PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX D

TEST PIT LOGS

Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx

DNTVL-SOIL-03-18 RECORD OF TEST PIT Sheet 1 of 1 734-1718280602 CLIENT: NOVA Gas Transmission Ltd. DATE EXCAVATED: October 2, 2018 DATUM: Assumed PROJECT TITLE: 2017 NGTL Abandonment Program PROJECT SITE: Donatville Receipt Meter Station LATITUDE: 54.733633 TEST PIT LOCATION: Former Aboveground Dump Tank LONGITUDE: -112.63721 SUBSURFACE PROFILE SAMPLES VAPOURS BACKFILLED HOLE ppm DNTVL-SOIL-03-18 ELEV 100 200 300 400 DEPTH DESCRIPTION VAPOURS LEL NAME SAMPLE (m) (Primary) DEPTH SCALE DEPTH % (Secondary) GUIDELINE SYMBOLS LAB LAB TESTING LAB TESTING COMPARISON SAMPLE TYPE

BORING METHOD BORING m ft 20 40 60 80

0.00 0.00 Ground Surface Clay 0.00 BTEX, PHC 5 DNTVL-SOIL G F1-F4, PASS Trace small-grained gravel, trace fine-grained -03-18-0.0 PAHs sand, brown, soft, low plasticity, moist.

Excavated Material Excavator Secure Energy Solutions EnergySecure

BTEX, PHC Grain Size 15 DNTVL-SOIL G F1-F4, PASS -03-18-0.5 PAHs -0.50 -0.50 0.50 Bottom of Test Pit at 0.50m

SCALE 1: 10.0 LOGGED BY: CW CHECKED BY: CL TETRA TECH CANADATETRA LOG ANALYTICAL - 734-1718280602-BOR-V0003-00 DONATVILLE-CONVERTED.GPJ 3/3/21 DNTVL-SOIL-04-18 RECORD OF TEST PIT Sheet 1 of 1 734-1718280602 CLIENT: NOVA Gas Transmission Ltd. DATE EXCAVATED: October 23, 2018 DATUM: Assumed PROJECT TITLE: 2017 NGTL Abandonment Program PROJECT SITE: Donatville Receipt Meter Station LATITUDE: 54.733648 TEST PIT LOCATION: Former Underground Separator LONGITUDE: -112.637247 SUBSURFACE PROFILE SAMPLES VAPOURS BACKFILLED HOLE ppm DNTVL-SOIL-04-18 ELEV 100 200 300 400 DEPTH DESCRIPTION VAPOURS LEL NAME SAMPLE (m) (Primary) DEPTH SCALE DEPTH % (Secondary) GUIDELINE SYMBOLS LAB LAB TESTING LAB TESTING COMPARISON SAMPLE TYPE

BORING METHOD BORING m ft 20 40 60 80

0.00 0.00 Ground Surface Clay 0.00

Trace small-grained gravel, trace fine-grained sand, brown, soft, low plasticity, moist.

5 DNTVL-SOIL G 1 -04-18-1.0 -Below 1.0 m; no gravel, no sand, stiff, high plasticity.

Excavated 5 Material Excavator Secure Energy Solutions EnergySecure

10 DNTVL-SOIL G BTEX, PHC PASS -04-18-2.5 F1-F4, PAHs, PCBs

10 DNTVL-SOIL BTEX, PHC -3.00 G PASS 3 -04-18-3.0 F1-F4, -3.00 3.00 Bottom of Test Pit at 3.00m PAHs, 10 DNTVL-SOIL PCBs -04-18-3.0DUP

SCALE 1: 20.0 LOGGED BY: CW CHECKED BY: CL TETRA TECH CANADATETRA LOG ANALYTICAL - 734-1718280602-BOR-V0003-00 DONATVILLE-CONVERTED.GPJ 3/3/21 DNTVL-SOIL-05-18 RECORD OF TEST PIT Sheet 1 of 1 734-1718280602 CLIENT: NOVA Gas Transmission Ltd. DATE EXCAVATED: October 24, 2018 DATUM: Assumed PROJECT TITLE: 2017 NGTL Abandonment Program PROJECT SITE: Donatville Receipt Meter Station LATITUDE: 54.733569 TEST PIT LOCATION: Historical Underground Drip Pit LONGITUDE: -112.637072 SUBSURFACE PROFILE SAMPLES VAPOURS BACKFILLED HOLE ppm DNTVL-SOIL-05-18 ELEV 100 200 300 400 DEPTH DESCRIPTION VAPOURS LEL NAME SAMPLE (m) (Primary) DEPTH SCALE DEPTH % (Secondary) GUIDELINE SYMBOLS LAB LAB TESTING LAB TESTING COMPARISON SAMPLE TYPE

BORING METHOD BORING m ft 20 40 60 80

0.00 0.00 Ground Surface Clay 0.00

Trace small-grained gravel, trace fine-grained sand, brown, soft, low plasticity, moist.

5 DNTVL-SOIL G 1 -05-18-1.0 -Below 1.0 m; no gravel, no sand.

5 DNTVL-SOIL G BTEX, PHC PASS -05-18-1.5 F1-F4, 5 PAHs, PCBs

Excavated Material Excavator 10 BTEX, PHC Grain Size DNTVL-SOIL G PASS

Secure Energy Solutions EnergySecure F1-F4, 2 -05-18-2.0 PAHs, PCBs

15 DNTVL-SOIL G 3 -05-18-3.0 10

15 DNTVL-SOIL G -3.50 -05-18-3.5 -3.50 3.50 Bottom of Test Pit at 3.50m

SCALE 1: 20.0 LOGGED BY: CW CHECKED BY: CL TETRA TECH CANADATETRA LOG ANALYTICAL - 734-1718280602-BOR-V0003-00 DONATVILLE-CONVERTED.GPJ 3/3/21 PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX E

SITE PHOTOGRAPHS

Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx

SITE PHOTOGRAPHS

Photo 1: Facing east toward the test pit beneath the former aboveground dump tank during abandonment assessment activities; October 23, 2018.

Photo 2: Facing south toward the test pit beneath the former underground separator during abandonment assessment activities; October 23, 2018.

NOVA Gas Transmission Ltd. 1 734-1718280602-REP-V0006-02 2017 NGTL Abandonment Program Donatville Receipt Meter Station

SITE PHOTOGRAPHS

Photo 3: Facing east toward the test pit beneath the former underground separator during abandonment assessment activities; October 23, 2018.

Photo 4: Facing east toward the test pit beneath the historical underground dump tank referred to as Drip Pit during abandonment assessment activities; October 24, 2018. NOVA Gas Transmission Ltd. 2 734-1718280602-REP-V0006-02 2017 NGTL Abandonment Program Donatville Receipt Meter Station

PHASE II ENVIRONMENTAL SITE ASSESSMENT – DONATVILLE RECEIPT METER STATION FILE: 734-1718280602-REP-V0006-02 | JUNE 1, 2021 | ISSUED FOR USE

APPENDIX F

LABORATORY ANALYTICAL REPORTS

Donatville (734-1718280602-REP-V0006-02) Summary Report - FINAL.docx

2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com

CLIENT NAME: TRANSCANADA PIPELINES LTD. 450 - 1 STREET SW CALGARY, AB T2P5H1 (800) 661-3805 ATTENTION TO: Stephen Bauer PROJECT: 734-1718280602 / Donatville Receipt MS AGAT WORK ORDER: 18C402280 SOIL ANALYSIS REVIEWED BY: Loan Nguyen, Senior Analyst TRACE ORGANICS REVIEWED BY: Elena Gorobets, Report Writer DATE REPORTED: Nov 01, 2018 PAGES (INCLUDING COVER): 14 VERSION*: 2

Should you require any information regarding this analysis please contact your client services representative at (403) 735-2005

*NOTES VERSION 2:Version 2 replaces Version 1 issued November 1, 2018. Sieve added to sample 9655204. Nov 2/18 CR

All samples will be disposed of within 30 days following analysis. Please contact the lab if you require additional sample storage time. Laboratories (V2) Page 1 of 14 Member of: Association of Professional Engineers and Geoscientists of Alberta AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory (APEGA) Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the Western Enviro-Agricultural Laboratory Association (WEALA) scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Environmental Services Association of Alberta (ESAA) Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Results relate only to the items tested and to all the items tested All reportable information as specified by ISO 17025:2005 is available from AGAT Laboratories upon request 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Particle Size by Sieve

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

DNTVL-SOIL-05- SAMPLE DESCRIPTION: 18-2.0 SAMPLE TYPE: Soil DATE SAMPLED: 2018-10-24 Parameter Unit G / S RDL 9655204 Sieve Analysis - 75 microns % 1 42 Sieve Texture Fine

Comments: RDL - Reported Detection Limit; G / S - Guideline / Standard 9655204 Value reported is amount of sample retained on sieve after wash with water and represents proportion by weight particles larger than indicated sieve size. Analysis performed at AGAT Calgary (unless marked by *)

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 2 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized)

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 3 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized)

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

Comments: RDL - Reported Detection Limit; G / S - Guideline / Standard: Refers to Alberta Tier 1 - Soil - Agricultural - Fine Guideline values are for general reference only. The guidelines provided may or may not be relevant for the intended use. Refer directly to the applicable standard for regulatory interpretation. 9655199-9655204 Results are based on the dry weight of the sample. The C6-C10 (F1) fraction is calculated using toluene response factor. The C10 - C16 (F2), C16 - C34 (F3), and C34 - C50 (F4) fractions are calculated using the average response factor for n-C10, n-C16, and n-C34. Gravimetric Heavy Hydrocarbons (F4g) are not included in and cannot be added to the Total C6-C50 and are only determined if the chromatogram of the C34 - C50 hydrocarbons indicates that hydrocarbons >C50 are present. Quality control data is available upon request. Assistance in the interpretation of data is available upon request. This method complies with the Reference Method for the CWS PHC and is validated for use in the laboratory. nC6 and nC10 response factors are within 30% of Toluene response factor. nC10, nC16 and nC34 response factors are within 10% of their average. C50 response factor is within 70% of nC10 + nC16 + nC34 average. Linearity is within 15%. The chromatogram returned to baseline by the retention time of nC50. C6 –C10 (F1 minus BTEX) is a calculated parameter. The calculated value is F1 minus BTEX. C>10 – C16 (F2- Napthalene) is a calculated parameter. The calculated value is F2 - Napthalene (if requested). C>16 - C34 (F3-PAH) is a calculated parameter. The calculated value is F3-PAH (if requested). Xylenes is a calculated parameter. The calculated value is the sum of m&p-Xylenes + o-Xylene. Extraction and holding times were met for this sample. Analysis performed at AGAT Calgary (unless marked by *)

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 4 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Polyaromatic Hydrocarbon Analysis - Soil

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

DNTVL-SOIL-04- DNTVL-SOIL-04- DNTVL-SOIL-04- DNTVL-SOIL-05- DNTVL-SOIL-05- SAMPLE DESCRIPTION: 18-2.5 18-3.0 18-3.0DUP 18-1.5 18-2.0 SAMPLE TYPE: Soil Soil Soil Soil Soil DATE SAMPLED: 2018-10-23 2018-10-23 2018-10-23 2018-10-24 2018-10-24 Parameter Unit G / S RDL 9655199 9655201 9655202 9655203 9655204 Acridine mg/kg 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 Quinoline mg/kg 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 Naphthalene mg/kg 0.014 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 2-Methylnaphthalene mg/kg 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 Acenaphthylene mg/kg 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 Acenaphthene mg/kg 0.32 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 Fluorene mg/kg 0.29 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 Phenanthrene mg/kg 0.051 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 Anthracene mg/kg 0.0046 0.004 <0.004 <0.004 <0.004 <0.004 <0.004 Fluoranthene mg/kg 0.032 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 Pyrene mg/kg 0.034 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 Benzo[a]anthracene mg/kg 0.070 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 Chrysene mg/kg 6.2 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 Benzo[b+j]fluoranthene mg/kg 6.2 0.03 <0.03 <0.03 <0.03 <0.03 <0.03 Benzo[k]fluoranthene mg/kg 6.2 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 Benzo[a]pyrene mg/kg 0.60 0.03 <0.03 <0.03 <0.03 <0.03 <0.03 Indeno[1,2,3-cd]pyrene mg/kg 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 Dibenzo[ah]anthracene mg/kg 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 Benzo[ghi]perylene mg/kg 0.05 <0.05 <0.05 <0.05 <0.05 <0.05 B[a]P TPE mg/kg 0.023 0.023 0.023 0.023 0.023 0.023 IACR (Coarse Soil) <1 0.05 0.05 0.05 0.05 0.05 0.05 IACR (Fine Soil) <1 0.11 0.11 0.11 0.11 0.11 0.11 Surrogate Unit Acceptable Limits 2-Fluorobiphenyl (PAH) % 50-150 81 86 85 81 81 p-Terphenyl-d14 (PAH) % 50-150 87 93 92 89 90

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 5 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Polyaromatic Hydrocarbon Analysis - Soil

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 6 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE Certificate of Analysis CALGARY, ALBERTA CANADA T2E 7P7 AGAT WORK ORDER: 18C402280 TEL (403)735-2005 FAX (403)735-2771 PROJECT: 734-1718280602 / Donatville Receipt MS http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Polychlorinated Biphenyls Analysis [by extended Aroclor list] in Soil

DATE RECEIVED: 2018-10-25 DATE REPORTED: 2018-11-01

Certified By:

CERTIFICATE OF ANALYSIS (V2) Page 7 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18C402280 PROJECT: 734-1718280602 / Donatville Receipt MS ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Soil Analysis

RPT Date: Nov 01, 2018 DUPLICATE REFERENCE MATERIAL METHOD BLANK SPIKE MATRIX SPIKE Method Acceptable Acceptable Acceptable Sample Blank Measured Limits Limits Limits PARAMETER Batch Dup #1 Dup #2 RPD Recovery Recovery Id Value Lower Upper Lower Upper Lower Upper

Particle Size by Sieve Sieve Analysis - 75 microns 9674203 <1 <1 NA < 1 101% 80% 120%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Certified By:

QUALITY ASSURANCE REPORT (V2) Page 8 of 14 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Results relate only to the items tested and to all the items tested 2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18C402280 PROJECT: 734-1718280602 / Donatville Receipt MS ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Trace Organics Analysis

Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized) Benzene 5207 9655039 <0.005 <0.005 NA < 0.005 95% 80% 120% 82% 80% 120% 103% 60% 140% Toluene 5207 9655039 <0.05 <0.05 NA < 0.05 99% 80% 120% 90% 80% 120% 107% 60% 140% Ethylbenzene 5207 9655039 <0.01 <0.01 NA < 0.01 100% 80% 120% 98% 80% 120% 115% 60% 140% Xylenes 5207 9655039 <0.05 <0.05 NA < 0.05 102% 80% 120% 97% 80% 120% 108% 60% 140% C6 - C10 (F1) 5207 9655039 <10 <10 NA < 10 103% 80% 120% 108% 80% 120% 133% 60% 140%

C10 - C16 (F2) 6707 9655202 <10 <10 NA < 10 102% 80% 120% 108% 80% 120% 112% 60% 140% C16 - C34 (F3) 6707 9655202 21 22 NA < 10 102% 80% 120% 106% 80% 120% 113% 60% 140% C34 - C50 (F4) 6707 9655202 12 12 NA < 10 102% 80% 120% 99% 80% 120% 105% 60% 140%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Polyaromatic Hydrocarbon Analysis - Soil Acridine 1795 9655202 < 0.05 < 0.05 NA < 0.05 86% 70% 130% 98% 70% 130% 91% 70% 130% Quinoline 1795 9655202 < 0.05 < 0.05 NA < 0.05 88% 70% 130% 97% 70% 130% 95% 70% 130% Naphthalene 1795 9655202 < 0.005 < 0.005 NA < 0.005 114% 70% 130% 104% 70% 130% 102% 70% 130% 2-Methylnaphthalene 1795 9655202 < 0.005 < 0.005 NA < 0.005 106% 70% 130% 98% 70% 130% 96% 70% 130% Acenaphthylene 1795 9655202 < 0.005 < 0.005 NA < 0.005 94% 70% 130% 93% 70% 130% 94% 70% 130%

Acenaphthene 1795 9655202 < 0.005 < 0.005 NA < 0.005 109% 70% 130% 101% 70% 130% 99% 70% 130% Fluorene 1795 9655202 < 0.02 < 0.02 NA < 0.02 102% 70% 130% 98% 70% 130% 91% 70% 130% Phenanthrene 1795 9655202 < 0.02 < 0.02 NA < 0.02 109% 70% 130% 105% 70% 130% 100% 70% 130% Anthracene 1795 9655202 < 0.004 < 0.004 NA < 0.004 92% 70% 130% 95% 70% 130% 94% 70% 130% Fluoranthene 1795 9655202 < 0.01 < 0.01 NA < 0.01 91% 70% 130% 101% 70% 130% 99% 70% 130%

Pyrene 1795 9655202 < 0.01 < 0.01 NA < 0.01 109% 70% 130% 117% 70% 130% 109% 70% 130% Benzo[a]anthracene 1795 9655202 < 0.02 < 0.02 NA < 0.02 93% 70% 130% 92% 70% 130% 96% 70% 130% Chrysene 1795 9655202 < 0.05 < 0.05 NA < 0.05 103% 70% 130% 97% 70% 130% 98% 70% 130% Benzo[b+j]fluoranthene 1795 9655202 < 0.03 < 0.03 NA < 0.03 98% 70% 130% 93% 70% 130% 93% 70% 130% Benzo[k]fluoranthene 1795 9655202 < 0.02 < 0.02 NA < 0.02 104% 70% 130% 103% 70% 130% 95% 70% 130%

Benzo[a]pyrene 1795 9655202 < 0.03 < 0.03 NA < 0.03 89% 70% 130% 89% 70% 130% 91% 70% 130% Indeno[1,2,3-cd]pyrene 1795 9655202 < 0.02 < 0.02 NA < 0.02 77% 70% 130% 74% 70% 130% 83% 70% 130% Dibenzo[ah]anthracene 1795 9655202 < 0.005 < 0.005 NA < 0.005 92% 70% 130% 85% 70% 130% 87% 70% 130% Benzo[ghi]perylene 1795 9655202 < 0.05 < 0.05 NA < 0.05 101% 70% 130% 96% 70% 130% 94% 70% 130%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Polychlorinated Biphenyls Analysis [by extended Aroclor list] in Soil Aroclor 1242 144 9661182 <0.05 <0.05 NA < 0.05 97% 70% 130% 102% 70% 130% 101% 50% 150% Aroclor 1254 144 9661182 <0.05 <0.05 NA < 0.05 94% 70% 130% 98% 70% 130% 94% 50% 150% Aroclor 1260 144 9661182 0.12 <0.05 NA < 0.05 92% 70% 130% 102% 70% 130% 96% 50% 150% Total Polychlorinated Biphenyls 144 9661182 0.12 <0.05 NA < 0.05 94% 70% 130% 101% 70% 130% 97% 50% 150%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

QUALITY ASSURANCE REPORT (V2) Page 9 of 14 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Results relate only to the items tested and to all the items tested 2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18C402280 PROJECT: 734-1718280602 / Donatville Receipt MS ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Trace Organics Analysis (Continued)

Certified By:

QUALITY ASSURANCE REPORT (V2) Page 10 of 14 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Results relate only to the items tested and to all the items tested 2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com Method Summary

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18C402280 PROJECT: 734-1718280602 / Donatville Receipt MS ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: PARAMETER AGAT S.O.P LITERATURE REFERENCE ANALYTICAL TECHNIQUE Soil Analysis Sieve Analysis - 75 microns SOIL 0540; SOIL 0110 KROETSCH 2007; SHEPPARD 2007 SIEVE

METHOD SUMMARY (V2) Page 11 of 14 Results relate only to the items tested and to all the items tested 2910 12TH STREET NE CALGARY, ALBERTA CANADA T2E 7P7 TEL (403)735-2005 FAX (403)735-2771 http://www.agatlabs.com Method Summary

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18C402280 PROJECT: 734-1718280602 / Donatville Receipt MS ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: PARAMETER AGAT S.O.P LITERATURE REFERENCE ANALYTICAL TECHNIQUE Trace Organics Analysis Benzene TO-0543 EPA SW-846 8260-S GC/MS Toluene TO-0543 EPA SW-846 8260-S GC/MS Ethylbenzene TO-0543 EPA SW-846 8260-S GC/MS Xylenes TO-0543 EPA SW-846 8260-S GC/MS C6 - C10 (F1) TO-0543 CCME Tier 1 Method-S L GC/FID C6 - C10 (F1 minus BTEX) TO-0543 CCME Tier 1 Method-S L GC/FID C10 - C16 (F2) TO-0560 CCME Tier 1 Method-S H GC/FID C16 - C34 (F3) TO-0560 CCME Tier 1 Method-S H GC/FID C34 - C50 (F4) TO-0560 CCME Tier 1 Method-S H GC/FID Gravimetric Heavy Hydrocarbons TO-0560 CCME Tier 1 Method-S H GC/FID Moisture Content TO-0560 CCME Tier 1 Method-S % GRAVIMETRIC Toluene-d8 (BTEX) TO-0543 EPA SW-846 8260-S GC/MS o-Terphenyl (F2-F4) TO 0560 CCME Tier 1 Method-S H GC/FID Acridine TO 0210 EPA SW-846 3570/8270-S GC/MS Quinoline TO 0210 EPA SW-846 3570/8270-S GC/MS Naphthalene TO 0210 EPA SW-846 3570/8270-S GC/MS 2-Methylnaphthalene TO 0210 EPA SW-846 3570/8270-S GC/MS Acenaphthylene TO 0210 EPA SW-846 3570/8270-S GC/MS Acenaphthene TO 0210 EPA SW-846 3570/8270-S GC/MS Fluorene TO 0210 EPA SW-846 3570/8270-S GC/MS Phenanthrene TO 0210 EPA SW-846 3570/8270-S GC/MS Anthracene TO 0210 EPA SW-846 3570/8270-S GC/MS Fluoranthene TO 0210 EPA SW-846 3570/8270-S GC/MS Pyrene TO 0210 EPA SW-846 3570/8270-S GC/MS Benzo[a]anthracene TO 0210 EPA SW-846 3570/8270-S GC/MS Chrysene TO 0210 EPA SW-846 3570/8270-S GC/MS Benzo[b+j]fluoranthene TO 0210 EPA SW-846 3570/8270-S GC/MS Benzo[k]fluoranthene TO 0210 EPA SW-846 3570/8270-S GC/MS Benzo[a]pyrene TO 0210 EPA SW-846 3570/8270-S GC/MS Indeno[1,2,3-cd]pyrene TO 0210 EPA SW-846 3570/8270-S GC/MS Dibenzo[ah]anthracene TO 0210 EPA SW-846 3570/8270-S GC/MS Benzo[ghi]perylene TO 0210 EPA SW-846 3570/8270-S GC/MS 2-Fluorobiphenyl (PAH) TO 0210 EPA SW-846 3570/8270 GC/MS p-Terphenyl-d14 (PAH) TO 0210 EPA SW-846 3570/8270 GC/MS B[a]P TPE CCME GC/MS IACR (Coarse Soil) CCME GC/MS IACR (Fine Soil) CCME GC/MS Aroclor 1016 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1221 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1232 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1242 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1248 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1254 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1260 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1262 TO-0410 EPA SW-846 8082 GC/ECD Aroclor 1268 TO-0410 EPA SW-846 8082 GC/ECD Total Polychlorinated Biphenyls TO-0410 EPA SW-846 8082 GC/ECD Decachlorobiphenyl TO-0410 EPA SW-846 8082 GC/ECD

METHOD SUMMARY (V2) Page 12 of 14 Results relate only to the items tested and to all the items tested Page 13 of 14 Page 14 of 14 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com

CLIENT NAME: TRANSCANADA PIPELINES LTD. P O BOX 1000, STATION M CALGARY, AB T2P 4K5 (800) 661-3805 ATTENTION TO: Stephen Bauer PROJECT: 734-1718280602 | SE-27-066-18W4M AGAT WORK ORDER: 18E394500 SOIL ANALYSIS REVIEWED BY: Jarrod Roberts, Operations Manager TRACE ORGANICS REVIEWED BY: Melinda Guay, Technical Reviewer DATE REPORTED: Oct 12, 2018 PAGES (INCLUDING COVER): 13 VERSION*: 1

Should you require any information regarding this analysis please contact your client services representative at (780) 395-2525

*Notes

Disclaimer: · All work conducted herein has been done using accepted standard protocols, and generally accepted practices and methods. AGAT test methods may incorporate modifications from the specified reference methods to improve performance. · All samples will be disposed of within 30 days after receipt unless a Long Term Storage Agreement is signed and returned. Some specialty analysis may be exempt, please contact your Client Project Manager for details. · AGAT’s liability in connection with any delay, performance or non-performance of these services is only to the Client and does not extend to any other third party. Unless expressly agreed otherwise in writing, AGAT’s liability is limited to the actual cost of the specific analysis or analyses included in the services. · This Certificate shall not be reproduced except in full, without the written approval of the laboratory. · The test results reported herewith relate only to the samples as received by the laboratory. · Application of guidelines is provided “as is” without warranty of any kind, either expressed or implied, including, but not limited to, warranties of merchantability, fitness for a particular purpose, or non-infringement. AGAT assumes no responsibility for any errors or omissions in the guidelines contained in this document. · All reportable information as specified by ISO/IEC 17025:2017 is available from AGAT Laboratories upon request. Laboratories (V1) Page 1 of 13 Member of: Association of Professional Engineers and Geoscientists of Alberta AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory (APEGA) Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the Western Enviro-Agricultural Laboratory Association (WEALA) scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Environmental Services Association of Alberta (ESAA) Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Measurement Uncertainty is not taken into consideration when stating conformity with a specified requirement. 6310 ROPER ROAD Certificate of Analysis EDMONTON, ALBERTA CANADA T6B 3P9 AGAT WORK ORDER: 18E394500 TEL (780)395-2525 FAX (780)462-2490 PROJECT: 734-1718280602 | SE-27-066-18W4M http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Particle Size by Sieve

DATE RECEIVED: 2018-10-03 DATE REPORTED: 2018-10-12

DNTVL-SOIL-03- 18-0.5 SE-27-066- SAMPLE DESCRIPTION: 18W4M SAMPLE TYPE: Soil DATE SAMPLED: 2018-10-02 Parameter Unit G / S RDL 9607454 Sieve Analysis - 75 microns % 1 37 Sieve Texture Fine

Comments: RDL - Reported Detection Limit; G / S - Guideline / Standard 9607454 Value reported is amount of sample retained on a 75 micron sieve after wash with water and represents proportion by weight particles larger than indicated sieve size. Analysis perfomed at AGAT Edmonton (unless marked by *)

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CERTIFICATE OF ANALYSIS (V1) Page 2 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD Certificate of Analysis EDMONTON, ALBERTA CANADA T6B 3P9 AGAT WORK ORDER: 18E394500 TEL (780)395-2525 FAX (780)462-2490 PROJECT: 734-1718280602 | SE-27-066-18W4M http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized)

DATE RECEIVED: 2018-10-03 DATE REPORTED: 2018-10-12

Certified By:

CERTIFICATE OF ANALYSIS (V1) Page 3 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD Certificate of Analysis EDMONTON, ALBERTA CANADA T6B 3P9 AGAT WORK ORDER: 18E394500 TEL (780)395-2525 FAX (780)462-2490 PROJECT: 734-1718280602 | SE-27-066-18W4M http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized)

DATE RECEIVED: 2018-10-03 DATE REPORTED: 2018-10-12

Comments: RDL - Reported Detection Limit; G / S - Guideline / Standard: Refers to ABT1 2016 S AG, F Guideline values are for general reference only. The guidelines provided may or may not be relevant for the intended use. Refer directly to the applicable standard for regulatory interpretation. 9607452-9607454 Results are based on the dry weight of the sample. The C6-C10 (F1) fraction is calculated using toluene response factor. The C10 - C16 (F2), C16 - C34 (F3), and C34 - C50 (F4) fractions are calculated using the average response factor for n-C10, n-C16, and n-C34. Gravimetric Heavy Hydrocarbons (F4g) are not included in and cannot be added to the Total C6-C50 and are only determined if the chromatogram of the C34 - C50 hydrocarbons indicates that hydrocarbons >C50 are present. Total C6 - C50 results are corrected for BTEX and PAH contributions (if requested). Quality control data is available upon request. Assistance in the interpretation of data is available upon request. This method complies with the Reference Method for the CWS PHC and is validated for use in the laboratory. nC6 and nC10 response factors are within 30% of Toluene response factor. nC10, nC16 and nC34 response factors are within 10% of their average. C50 response factor is within 70% of nC10 + nC16 + nC34 average. Linearity is within 15%. The chromatogram returned to baseline by the retention time of nC50. Extraction and holding times were met for this sample. C6 –C10 (F1 minus BTEX) is a calculated parameter. The calculated value is F1 minus BTEX. Xylenes is a calculated parameter. The calculated value is the sum of m&p-Xylenes + o-Xylene. Analysis perfomed at AGAT Edmonton (unless marked by *)

Certified By:

CERTIFICATE OF ANALYSIS (V1) Page 4 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD Certificate of Analysis EDMONTON, ALBERTA CANADA T6B 3P9 AGAT WORK ORDER: 18E394500 TEL (780)395-2525 FAX (780)462-2490 PROJECT: 734-1718280602 | SE-27-066-18W4M http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Polyaromatic Hydrocarbon Analysis in Soil

DATE RECEIVED: 2018-10-03 DATE REPORTED: 2018-10-12

DNTVL-SOIL-03- DNTVL-SOIL-03- 18-0.0 18-0.5 SE-27-066- SE-27-066- SAMPLE DESCRIPTION: 18W4M 18W4M SAMPLE TYPE: Soil Soil DATE SAMPLED: 2018-10-02 2018-10-02 Parameter Unit G / S RDL 9607452 9607454 Naphthalene mg/kg 0.005 <0.005 <0.005 2-Methylnaphthalene mg/kg 0.005 <0.005 <0.005 Quinoline mg/kg 0.05 <0.05 <0.05 Acenaphthylene mg/kg 0.005 <0.005 <0.005 Acenaphthene mg/kg 0.005 <0.005 <0.005 Fluorene mg/kg 0.02 <0.02 <0.02 Phenanthrene mg/kg 0.02 <0.02 <0.02 Anthracene mg/kg 0.004 <0.004 <0.004 Fluoranthene mg/kg 0.01 <0.01 <0.01 Pyrene mg/kg 0.01 <0.01 <0.01 Acridine mg/kg 0.05 <0.05 <0.05 Benzo[a]anthracene mg/kg 0.02 <0.02 <0.02 Chrysene mg/kg 0.05 <0.05 <0.05 Benzo[b+j]fluoranthene mg/kg 0.03 <0.03 <0.03 Benzo[k]fluoranthene mg/kg 0.02 <0.02 <0.02 Benzo[a]pyrene mg/kg 0.03 <0.03 <0.03 Indeno[1,2,3-cd]pyrene mg/kg 0.02 <0.02 <0.02 Dibenzo[ah]anthracene mg/kg 0.005 <0.005 <0.005 Benzo[ghi]perylene mg/kg 0.05 <0.05 <0.05 B[a]P TPE mg/kg 0.023 0.023 0.023 IACR (Fine Soil) 0.11 0.11 0.11 IACR (Coarse Soil) 0.05 0.05 0.05 Surrogate Unit Acceptable Limits 2-Fluorobiphenyl (PAH) % 50-150 92 97 p-Terphenyl-d14 (PAH) % 50-150 92 97

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CERTIFICATE OF ANALYSIS (V1) Page 5 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD Certificate of Analysis EDMONTON, ALBERTA CANADA T6B 3P9 AGAT WORK ORDER: 18E394500 TEL (780)395-2525 FAX (780)462-2490 PROJECT: 734-1718280602 | SE-27-066-18W4M http://www.agatlabs.com CLIENT NAME: TRANSCANADA PIPELINES LTD. ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Polyaromatic Hydrocarbon Analysis in Soil

DATE RECEIVED: 2018-10-03 DATE REPORTED: 2018-10-12

Certified By:

CERTIFICATE OF ANALYSIS (V1) Page 6 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Soil Analysis

RPT Date: Oct 12, 2018 DUPLICATE REFERENCE MATERIAL METHOD BLANK SPIKE MATRIX SPIKE Method Acceptable Acceptable Acceptable Sample Blank Measured Limits Limits Limits PARAMETER Batch Dup #1 Dup #2 RPD Recovery Recovery Id Value Lower Upper Lower Upper Lower Upper

Landfill - Inorganics - Class II pH (1:1 Water:Soil extraction) 280 9604127 7.96 7.96 0.0% < 99% 90% 110% Free Liquid 280 9604127 NEG NEG 0.0% N/A Antimony - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 97% 80% 120% 94% 80% 120% Arsenic - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 96% 80% 120% 90% 80% 120% Barium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 112% 80% 120% 101% 80% 120%

Beryllium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 108% 80% 120% 102% 80% 120% Boron - Leachate 282 9606807 0.8 0.7 NA < 0.5 107% 80% 120% 101% 80% 120% Cadmium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 108% 80% 120% 97% 80% 120% Chromium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 107% 80% 120% 99% 80% 120% Cobalt - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 103% 80% 120% 93% 80% 120%

Copper - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 102% 80% 120% 101% 80% 120% Iron - Leachate 282 9606807 0.5 <0.5 NA < 0.5 110% 80% 120% 102% 80% 120% Lead - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 104% 80% 120% 97% 80% 120% Mercury - Leachate 282 9606807 <0.1 <0.1 NA < 0.1 87% 80% 120% 100% 80% 120% Nickel - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 107% 80% 120% 101% 80% 120%

Selenium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 102% 80% 120% 107% 80% 120% Silver - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 95% 80% 120% 74% 80% 120% Thallium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 98% 80% 120% 95% 80% 120% Uranium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 117% 80% 120% 99% 80% 120% Vanadium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 108% 80% 120% 102% 80% 120%

Zinc - Leachate 282 9606807 <1 <1 NA < 1 105% 80% 120% 104% 80% 120% Zirconium - Leachate 282 9606807 <0.5 <0.5 NA < 0.5 108% 80% 120% 96% 80% 120%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated. If Matrix spike value is NA, the spiked analyte concentration was lower than that of the matrix contribution. With multi element runs, a maximum of 10% for each QC parameter may fail to an absolute maximum of 10%.

Particle Size by Sieve Sieve Analysis - 75 microns 284 9614359 42 42 0.0% < 1 97% 80% 120% NA NA

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QUALITY ASSURANCE REPORT (V1) Page 7 of 13 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. RPDs calculated using raw data. The RPD may not be reflective of duplicate values shown, due to rounding of final results. Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Trace Organics Analysis

Petroleum Hydrocarbons (BTEX/F1-F4) in Soil (CWS) (Methanol Field Stabilized) Benzene 1934 9606105 <0.005 <0.005 NA < 0.005 101% 80% 120% 91% 80% 120% 88% 60% 140% Toluene 1934 9606105 <0.05 <0.05 NA < 0.05 106% 80% 120% 92% 80% 120% 89% 60% 140% Ethylbenzene 1934 9606105 <0.01 <0.01 NA < 0.01 90% 80% 120% 83% 80% 120% 86% 60% 140% Xylenes 1934 9606105 <0.05 <0.05 NA < 0.05 100% 80% 120% 83% 80% 120% 80% 60% 140% C6 - C10 (F1) 1934 9606105 <10 <10 NA < 10 85% 80% 120% 86% 80% 120% 117% 60% 140%

C10 - C16 (F2) 1270 9606105 10 30 NA < 10 107% 80% 120% 108% 80% 120% 102% 60% 140% C16 - C34 (F3) 1270 9606105 160 150 6.5% < 10 115% 80% 120% 99% 80% 120% 95% 60% 140% C34 - C50 (F4) 1270 9606105 60 50 18.2% < 10 119% 80% 120% 113% 80% 120% 113% 60% 140% Moisture Content 1270 9606105 21 18 15.4% < 1

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Polyaromatic Hydrocarbon Analysis in Soil Naphthalene 470 9606105 <0.005 <0.005 NA < 0.005 106% 70% 130% 87% 70% 130% 81% 70% 130% 2-Methylnaphthalene 470 9606105 <0.005 <0.005 NA < 0.005 86% 70% 130% 79% 70% 130% Quinoline 470 9606105 <0.05 <0.05 NA < 0.05 113% 70% 130% 92% 70% 130% 90% 70% 130% Acenaphthylene 470 9606105 <0.005 <0.005 NA < 0.005 85% 70% 130% 74% 70% 130% 78% 70% 130% Acenaphthene 470 9606105 <0.005 <0.005 NA < 0.005 97% 70% 130% 85% 70% 130% 88% 70% 130%

Fluorene 470 9606105 <0.02 <0.02 NA < 0.02 98% 70% 130% 87% 70% 130% 89% 70% 130% Phenanthrene 470 9606105 <0.02 <0.02 NA < 0.02 117% 70% 130% 93% 70% 130% 86% 70% 130% Anthracene 470 9606105 <0.004 <0.004 NA < 0.004 108% 70% 130% 83% 70% 130% 82% 70% 130% Fluoranthene 470 9606105 <0.01 <0.01 NA < 0.01 96% 70% 130% 79% 70% 130% 76% 70% 130% Pyrene 470 9606105 <0.01 <0.01 NA < 0.01 101% 70% 130% 84% 70% 130% 81% 70% 130%

Acridine 470 9606105 <0.05 <0.05 NA < 0.05 115% 70% 130% 86% 70% 130% 81% 70% 130% Benzo[a]anthracene 470 9606105 <0.02 <0.02 NA < 0.02 90% 70% 130% 77% 70% 130% 80% 70% 130% Chrysene 470 9606105 <0.05 <0.05 NA < 0.05 81% 70% 130% 91% 70% 130% 80% 70% 130% Benzo[b+j]fluoranthene 470 9606105 <0.03 <0.03 NA < 0.03 95% 70% 130% 89% 70% 130% 73% 70% 130% Benzo[k]fluoranthene 470 9606105 <0.02 <0.02 NA < 0.02 103% 70% 130% 86% 70% 130% 84% 70% 130%

Benzo[a]pyrene 470 9606105 <0.03 <0.03 NA < 0.03 82% 70% 130% 77% 70% 130% 73% 70% 130% Indeno[1,2,3-cd]pyrene 470 9606105 <0.02 <0.02 NA < 0.02 91% 70% 130% 77% 70% 130% 75% 70% 130% Dibenzo[ah]anthracene 470 9606105 <0.005 <0.005 NA < 0.005 77% 70% 130% 76% 70% 130% 77% 70% 130% Benzo[ghi]perylene 470 9606105 <0.05 <0.05 NA < 0.05 101% 70% 130% 76% 70% 130% 77% 70% 130%

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Landfill - Organics - Class II Flash point (Closed Cup) 2171 Butanol 39 40 2.5% < 111% 80% 120% Benzene (Leachate) 1839 9608530 <0.005 <0.005 NA < 0.005 98% 80% 120% 93% 80% 120% 92% 70% 130% Toluene (Leachate) 1839 9608530 <0.005 <0.005 NA < 0.005 99% 80% 120% 92% 80% 120% 92% 70% 130% Ethylbenzene (Leachate) 1839 9608530 0.005 <0.005 NA < 0.005 103% 80% 120% 93% 80% 120% 94% 70% 130% Xylenes (Leachate) 1839 9608530 0.008 0.008 NA < 0.005 106% 80% 120% 96% 80% 120% 98% 60% 140%

QUALITY ASSURANCE REPORT (V1) Page 8 of 13 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. RPDs calculated using raw data. The RPD may not be reflective of duplicate values shown, due to rounding of final results. Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Quality Assurance

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: Trace Organics Analysis (Continued)

Comments: If the RPD value is NA, the results of the duplicates are under 5X the RDL and will not be calculated.

Certified By:

QUALITY ASSURANCE REPORT (V1) Page 9 of 13 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. RPDs calculated using raw data. The RPD may not be reflective of duplicate values shown, due to rounding of final results. Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com QA Violation

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer

RPT Date: Oct 12, 2018 REFERENCE MATERIAL METHOD BLANK SPIKE MATRIX SPIKE Acceptable Acceptable Acceptable Measured Limits Limits Limits PARAMETER Sample Id Sample Description Recovery Recovery Value Lower Upper Lower Upper Lower Upper Landfill - Inorganics - Class II Silver - Leachate 9606807 DNTVL-GRVL-1-18 SE-27-066-18W4M 95% 80% 120% 74% 80% 120%

QUALITY ASSURANCE REPORT (V1) Page 10 of 13 AGAT Laboratories is accredited to ISO/IEC 17025 by the Canadian Association for Laboratory Accreditation Inc. (CALA) and/or Standards Council of Canada (SCC) for specific tests listed on the scope of accreditation. AGAT Laboratories (Mississauga) is also accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA) for specific drinking water tests. Accreditations are location and parameter specific. A complete listing of parameters for each location is available from www.cala.ca and/or www.scc.ca. The tests in this report may not necessarily be included in the scope of accreditation. Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Method Summary

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: PARAMETER AGAT S.O.P LITERATURE REFERENCE ANALYTICAL TECHNIQUE Soil Analysis pH (1:1 Water:Soil extraction) INOR-171-6207 HENDERSHOT 2007 PH METER Free Liquid INOR-171-6012 EPA SW- 846-9095B Paint Filter Test Antimony - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Arsenic - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Barium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Beryllium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Boron - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Cadmium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Chromium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Cobalt - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Copper - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Iron - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Lead - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Mercury - Leachate SOIL 0420; INST 0140 In-House Leachate; EATON 2005 ICP/OES Nickel - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Selenium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Silver - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Thallium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Uranium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Vanadium - Leachate INOR-171-6011, INOR-6201 In-House Leachate;EATON 2005 ICP/OES Zinc - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Zirconium - Leachate INOR-171-6011, INOR-6201 In-House Leachate; EATON 2005 ICP/OES Sieve Analysis - 75 microns INOR-171-6009 KROETSCH 2007; SHEPPARD 2007 SIEVE

METHOD SUMMARY (V1) Page 11 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Method Summary

CLIENT NAME: TRANSCANADA PIPELINES LTD. AGAT WORK ORDER: 18E394500 PROJECT: 734-1718280602 | SE-27-066-18W4M ATTENTION TO: Stephen Bauer SAMPLING SITE: SAMPLED BY: PARAMETER AGAT S.O.P LITERATURE REFERENCE ANALYTICAL TECHNIQUE Trace Organics Analysis Flash point (Closed Cup) ORG-170-5210 ASTM D93-02A PENSKY-MARTENS CLOSED CUP Benzene (Leachate) ORG-170-5100, -5430, -5440 EPA 624 & SW-846 5030 GC/MS Toluene (Leachate) ORG-170-5100, -5430, -5440 EPA 624 & SW-846 5030 GC/MS Ethylbenzene (Leachate) ORG-170-5100, -5430, -5440 EPA 624 & SW-846 5030 GC/MS Xylenes (Leachate) ORG-170-5100, -5430, -5440 EPA 624 & SW-846 5030 GC/MS Toluene-d8 (BTEX) ORG-170-5100/5430/5440 In-House Leachate GC/MS ORG-170- Benzene EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 ORG-170- Toluene EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 ORG-170- Ethylbenzene EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 ORG-170- Xylenes EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 ORG-170- C6 - C10 (F1) CCME Tier 1 Method-S L GC/FID 5110/5140/5430/5440 ORG-170- C6 - C10 (F1 minus BTEX) CCME Tier 1 Method-S L GC/FID 5110/5140/5430/5440 C10 - C16 (F2) ORG-170-5120/5300 CCME Tier 1 Method-S H GC/FID C16 - C34 (F3) ORG-170-5120/5300 CCME Tier 1 Method-S H GC/FID C34 - C50 (F4) ORG-170-5120/5300 CCME Tier 1 Method-S H GC/FID Gravimetric Heavy Hydrocarbons ORG-170-5120/5300 CCME Tier 1 Method-S H GC/FID Moisture Content LAB-175-4002 CCME Tier 1 Method-S % GRAVIMETRIC ORG-170- Toluene-d8 (BTEX) EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 ORG-170- Ethylbenzene-d10 (BTEX) EPA SW-846 8260-S GC/MS 5110/5140/5430/5440 o-Terphenyl (F2-F4) ORG-170-5120/5300 CCME Tier 1 Method-S H GC/FID Naphthalene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS 2-Methylnaphthalene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Quinoline ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Acenaphthylene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Acenaphthene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Fluorene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Phenanthrene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Anthracene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Fluoranthene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Pyrene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Acridine ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Benzo[a]anthracene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Chrysene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Benzo[b+j]fluoranthene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Benzo[k]fluoranthene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Benzo[a]pyrene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Indeno[1,2,3-cd]pyrene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Dibenzo[ah]anthracene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS Benzo[ghi]perylene ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS 2-Fluorobiphenyl (PAH) ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS p-Terphenyl-d14 (PAH) ORG-170-5420 EPA SW846 8270 D/3540 C/3570 GC/MS B[a]P TPE ORG-170-5420 CCME CALCULATION IACR (Fine Soil) CCME CALCULATION

METHOD SUMMARY (V1) Page 12 of 13 Results relate only to the items tested. Results apply to samples as received. 6310 ROPER ROAD EDMONTON, ALBERTA CANADA T6B 3P9 TEL (780)395-2525 FAX (780)462-2490 http://www.agatlabs.com Method Summary

METHOD SUMMARY (V1) Page 13 of 13 Results relate only to the items tested. Results apply to samples as received.