TRANS QUÉBEC & MARITIMES PIPELINE INC. (TQM) TQM REINFORCEMENT AND ASSET PURCHASE PROJECT

Environmental and Socio-Economic Assessment

August 2019

TQM Pipeline Environmental and Socio-Economic Assessment TQM REINFORCEMENT AND ASSET PURCHASE PROJECT

TRANS QUÉBEC & MARITIMES PIPELINE INC. (TQM) TQM REINFORCEMENT AND ASSET PURCHASE PROJECT

Environmental and Socio-Economic Assessment

Prepared by: ______

Mélanie Brisson Léveillé B.Sc.

______Diane Langlois, Geographer, M. Env.

Reviewed by: ______Annabelle Landry B.Sc., M. Env.

Project number: 19-32500-800

August 22, 2019

Groupe Conseil UDA inc. Consulting services in agriculture, forestry and environment since 1978 TQM Pipeline Environmental and Socio-Economic Assessment TQM REINFORCEMENT AND ASSET PURCHASE PROJECT

Table of Content

List of Appendices ...... iii List of Tables ...... iv List of Acronyms and Abbreviations ...... vi 1 INTRODUCTION ...... 1-1 Trans Québec & Maritimes Pipeline Inc...... 1-1 The TQM Reinforcement and Asset Purchase Project...... 1-1 Regulatory Context ...... 1-2 Federal ...... 1-2 Provincial & Municipal ...... 1-2 Assessment Scope ...... 1-3 Project Team ...... 1-3 Concordance with the NEB Filing Manual ...... 1-3 ESA Report Structure ...... 1-6 2 CONSULTATION AND ENGAGEMENT ...... 2-1 Public consultation ...... 2-1 Bromont CS ...... 2-1 Sabrevois Asset Purchase ...... 2-2 Saint-Basile Interconnect ...... 2-3 Regulatory Consultation ...... 2-3 Aboriginal Engagement ...... 2-4 Ongoing Engagement ...... 2-4 3 PROJECT DESCRIPTION ...... 3-1 Need for the Project ...... 3-1 Alternatives to the Project ...... 3-1 Overview of Project Components and Key Technical Features ...... 3-1 Bromont CS ...... 3-2 Sabrevois Asset Purchase ...... 3-5 Saint-Basile Interconnect ...... 3-5 Temporary Workspace Area ...... 3-6 Construction ...... 3-6 Bromont CS ...... 3-6 Sabrevois Asset Purchase ...... 3-8 Saint-Basile Interconnect ...... 3-8 Operations ...... 3-9 Decommissioning and Abandonment ...... 3-9 4 OVERVIEW OF BASELINE CONDITIONS ...... 4-1 Methodological Considerations ...... 4-1 Approach ...... 4-1 Existing Data ...... 4-1 Detailed Field Surveys at Bromont CS ...... 4-2 Field Reconnaissance for the Sabrevois Asset Purchase ...... 4-2

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Field Reconnaissance for the Saint-Basile Interconnect ...... 4-2 Spatial Boundaries ...... 4-2 Biophysical Environment ...... 4-3 Physical and Meteorological Environment ...... 4-3 Soil and Soil Productivity ...... 4-5 Water Quality and Quantity ...... 4-6 Fish and Fish Habitat ...... 4-7 Vegetation ...... 4-9 Wetlands ...... 4-11 Wildlife and Wildlife Habitat ...... 4-12 Species at Risk or Species of Special Status ...... 4-18 Air and Greenhouse Gas Emissions ...... 4-18 Acoustic Environment ...... 4-19 Socio-Economic Environment ...... 4-20 Human Occupancy and Resource Use ...... 4-20 Heritage Resources ...... 4-23 Navigation and Navigation Safety ...... 4-23 Traditional Land and Resource Use ...... 4-23 Social and Cultural Well-Being ...... 4-23 Human Health and Aesthetics ...... 4-24 Infrastructures and Services ...... 4-25 Employment and Economy ...... 4-26 5 ASSESSMENT METHODOLOGY ...... 5-1 Approach ...... 5-1 Valued Components and Potential Effects ...... 5-1 Spatial Boundaries ...... 5-3 Temporal Boundaries ...... 5-3 Mitigation Measures ...... 5-3 Characterization of Residual Effects and Determination of Significance...... 5-3 Significance of the Residual Effects Assessment...... 5-4 Cumulative Effects ...... 5-5 6 EFFECTS ASSESSMENT ...... 6-1 Biophysical Environment ...... 6-1 Soil and Soil Productivity ...... 6-1 Water Quality and Quantity ...... 6-3 Fish and Fish Habitat ...... 6-6 Vegetation ...... 6-8 Wetlands ...... 6-10 Wildlife and Wildlife Habitat ...... 6-12 Species at Risk or Species of Special Status ...... 6-17 Air and Greenhouse Gas Emissions ...... 6-17 Acoustic Environment ...... 6-22 Socio-Economic Environment ...... 6-24 Human Occupancy and Resource Use ...... 6-24 Social and Cultural Well-Being ...... 6-27 Human Health and Aesthetics ...... 6-28

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Infrastructure and Services ...... 6-29 Employment and Economy ...... 6-31 Effects of the Environment on the Project ...... 6-32 Cumulative Effects ...... 6-33 Vegetation ...... 6-34 Wetlands ...... 6-34 Wildlife and Wildlife Habitat ...... 6-34 Species at Risk or Species of Special Status ...... 6-34 Air and GHG Emissions ...... 6-34 Acoustic Environment ...... 6-35 Human Occupancy and Resource Use ...... 6-35 Human Health and Aesthetics ...... 6-35 Infrastructure and Services ...... 6-35 7 INSPECTION, MONITORING AND FOLLOW-UP ...... 7-1 Environmental Inspection ...... 7-1 Environmental Follow-Up and Monitoring...... 7-2 Environmental Compliance during Operations ...... 7-2 8 ACCIDENTS AND MALFUNCTIONS ...... 8-1 Process Upset ...... 8-2 Fire ...... 8-3 Hazardous Materials and Contaminant Release ...... 8-3 Vehicle Accident ...... 8-4 Damage to Existing Pipelines and/or Facilities ...... 8-5 Summary of Accidents and Malfunctions ...... 8-5 9 SUMMARY ...... 9-1 10 REFERENCES ...... 10-1

List of Appendices

Appendix A: Figures Appendix B: Ecological Characterization Report Appendix C: Noise Study Appendix D: Air Emission Study Appendix E: Environmental Protection Plan

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List of Tables

Table 1-1 Overview of Approvals to be Obtained in the Context of the Project ...... 1-2 Table 1-2 Overview of the Studies Supporting the Project ...... 1-3 Table 1-3 Concordance with Guide A Facility Application – A.2 ESA of the NEB Filing Manual ...... 1-4 Table 2-1 Summary of Issues – Bromont CS ...... 2-2 Table 2-2 Summary of Issues – Sabrevois Asset Purchase ...... 2-3 Table 2-3 Summary of Issues – Saint-Basile Interconnect ...... 2-3 Table 3-1 Bromont CS Components ...... 3-3 Table 3-2 Piping Materials for the Saint-Basile Interconnect ...... 3-6 Table 3-3 Summary of Construction Sequencing and Duration for the Bromont CS ...... 3-7 Table 3-4 Summary of Construction Sequencing and Duration for the Saint-Basile Interconnect ...... 3-9 Table 4-1 Meteorological Stations Considered in the Climate Analysis ...... 4-4 Table 4-2 Monthly Average, Min. and Max. Daily Temperatures in °C at the Sabrevois, Farnham, Granby and Sainte-Madeleine Meteorological Stations ...... 4-4 Table 4-3 Rain and Snow Precipitations at the Sabrevois, Farnham, Granby and Sainte-Madeleine Meteorological Stations ...... 4-5 Table 4-4 Monthly Average Wind Speed in km/h and Most Frequent Wind Direction at Montréal-Saint-Hubert Meteorological Station ...... 4-5 Table 4-5 Biophysical Characteristics of Watercourses within 30 m of the Bromont CS PDA ...... 4-8 Table 4-6 Biophysical Characteristics of Watercourses within 30 m of the Saint-Basile Interconnect PDA ...... 4-9 Table 4-7 Native Vegetation Cover within the Bromont CS PDA ...... 4-9 Table 4-8 Summary of Vegetation Cover in the Saint-Basile Interconnect PDA ...... 4-11 Table 4-9 Wetland Areas within the PDA and its Surrounding 30 m ...... 4-11 Table 4-10 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Bromont CS ...... 4-13 Table 4-11 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Saint-Basile Interconnect .... 4-15 Table 4-12 Number of Days of Poor Air Quality (AQI) ...... 4-18 Table 4-13 Number of Smog Days due to Fine Particulate Matter and Ozone ...... 4-19 Table 4-14 Ambient Noise Level ...... 4-19 Table 4-15 Summary of Reconnaissance Surveys for the Sabrevois Asset Purchase ...... 4-22 Table 4-16 Distribution of the Population by Municipalities, Cities or MRCs ...... 4-24 Table 4-17 Median Total Income by Municipalities, Cities or MRCs ...... 4-26 Table 4-18 Distribution of the Labour Force Population Aged 15 years and over According to the NAICS* Sectors by Territorial Entities ...... 4-28 Table 4-19 Level of Education for the Population Aged 15 years and over by Territorial Entities ...... 4-29 Table 5-1 Valued Components Interaction with the Project and Potential Effects Considered ...... 5-2 Table 5-2 Valued Components Interaction with the Project and Potential Effects Not Considered ...... 5-2 Table 5-3 Residual Effects Characterization Criteria ...... 5-4 Table 5-4 Significance of the Residual Effect ...... 5-5 Table 6-1 Change in Soil Capability during Construction ...... 6-2 Table 6-2 Change in Soil Quality during Construction ...... 6-2 Table 6-3 Soil Contamination and Discovery of Historical Soil Contamination during Construction ...... 6-3 Table 6-4 Change in Surface Water Quality during Construction ...... 6-5 Table 6-5 Alteration of Riparian or Instream Habitat Function during Construction ...... 6-7 Table 6-6 Long-Term, Medium-Term and Short-Term Loss of Native Vegetation at the Bromont CS and the Saint- Basile Interconnect ...... 6-9 Table 6-7 Change to Native Vegetation Communities ...... 6-9

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Table 6-8 Introduction or Spread of Invasive and Non-Native Plant Species during Construction ...... 6-10 Table 6-9 Loss or Disturbance of Wetlands in the Bromont CS PDA ...... 6-11 Table 6-10 Loss or Disturbance of Wetlands ...... 6-12 Table 6-11 Change in Habitat Availability ...... 6-14 Table 6-12 Change in Habitat Connectivity and Wildlife Movement ...... 6-16 Table 6-13 Change in Mortality Risk during Construction ...... 6-17 Table 6-14 Change to Ambient Air Quality during Construction ...... 6-18 Table 6-15 Release of GHGs during Construction ...... 6-19 Table 6-16 Estimated Air Contaminants and GHG Emissions during Operation of the Compressor Unit (A2) and the APU, and Anticipated Fugitive and Venting Emissions ...... 6-20 Table 6-17 Compressor Unit Air Emissions during Operation / Comparison to Regulatory Air Quality Criteria .... 6-21 Table 6-18 Change in Ambient Air Quality during Operation ...... 6-21 Table 6-19 Release of GHGs during Operation ...... 6-22 Table 6-20 Temporary Increase in Local Noise Levels during Construction ...... 6-23 Table 6-21 Estimated Noise Level of the Compression Units ...... 6-24 Table 6-22 Increase in Local Noise Levels during Operation ...... 6-24 Table 6-23 Temporary Disruption of Agricultural Activities during Construction ...... 6-25 Table 6-24 Loss of Agricultural Lands ...... 6-26 Table 6-25 Disruption of Recreational Activities during Construction ...... 6-26 Table 6-26 Disruption of Surrounding Community and Landowner during Construction ...... 6-27 Table 6-27 Alteration of Viewsheds ...... 6-28 Table 6-28 Increase in Demands for Accommodations and Other Community Services during Construction ...... 6-30 Table 6-29 Increase in Traffic Volumes during Construction ...... 6-31 Table 8-1 Potential Interactions Between VCs and Accidents, Malfunctions and Unplanned Events ...... 8-1

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List of Acronyms and Abbreviations

°C ...... Degree(s) Celsius µg/m3 ...... Microgram(s) per cubic metre AARQ ...... Atlas des amphibiens et des reptiles du Québec AFM...... Agence forestière de la Montérégie APU ...... Auxiliary Power Unit AQI ...... Air Quality Index ARDA ...... Aménagement rural et développement de l’agriculture ARPALAA...... Act Respecting the Preservation of Agricultural Land and Agricultural Activities ASL ...... Above Sea Level ASME ...... American Society of Mechanical Engineers Avg ...... Average BV4 ...... Block valve 4 CARTHY ...... Corporation d’aménagement récréotouristique de la Haute-Yamaska inc. CDPNQ ...... Centre de données sur le patrimoine naturel du Québec CEA Act, 2012...... Canadian Environmental Assessment Act, 2012 CEA Agency ...... Canadian Environmental Assessment Agency CEHQ ...... Centre d’expertise hydrique du Québec CIUSSS ...... Centre intégré universitaire de santé et des services sociaux de l’Estrie

CH4 ...... Methane CHUS ...... Centre hospitalier universitaire de Sherbrooke cm ...... Centimeter(s) CO ...... Carbon monoxide

CO2 ...... Carbon dioxide

CO2eq ...... Carbon dioxide equivalent COSEWIC ...... Committee on the Status of Endangered Wildlife in Canada COVABAR...... Comité de concertation et de valorisation du bassin de la rivière Richelieu CP ...... Cathodic Protection CPTAQ ...... Commission de protection du territoire agricole du Québec CS ...... Compressor Station CSA ...... Canadian Standards Association dBA ...... A-weighted decibel(s) DUC ...... Ducks Unlimited Canada ECCC ...... Environment and Climate Change Canada EDA ...... Eastern Delivery Area EI ...... Environmental Inspector(s) Énergir...... Énergir, L.P. EPP ...... Environmental Protection Plan ESA ...... Environmental and Socio-economic Assessment ESD ...... Emergency Shutdown g/GJ...... Gram(s) per Gigajoule(s) g/kWh ...... Gram(s) per kilowatt hour

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g/MJ ...... Gram(s) per Megajoule(s) GHG ...... Greenhouse Gas GJ/y ...... Gigajoule(s) per year GST ...... Goods and Services Sales Tax ha ...... Hectare(s) IBA ...... Important Bird Area IN 98-01 ...... Instruction Note 98-01 IRDA...... Institut de recherche et de développement en agroenvironnement ISQ ...... Institut de la statistique du Québec km ...... Kilometre(s) km/h ...... Kilometre(s) per hour kV ...... Kilovolt(s) LAA ...... Local Assessment Area LEMV ...... Loi sur les espèces menacées ou vulnérables LPTAA ...... Loi sur la protection du territoire et des activités agricoles m ...... Metre(s) MAMH ...... Ministère des Affaires municipales et de l’Habitation MAMOT ...... Ministère des Affaires municipales et de l'Occupation du territoire MAPAQ ...... Ministère de l’Agriculture, des Pêcheries et de l’Alimentation du Québec MCC ...... Ministère de la Culture et des Communications MDDELCC ...... Ministère du Développement durable, de l’Environnement et de la Lutte contre les changements climatiques MELCC...... Ministère de l’Environnement et de la Lutte contre les changements climatiques MERN...... Ministère de l’Énergie et des Ressources naturelles du Québec MFFP ...... Ministère des Forêts, de la Faune et des Parcs MLV ...... Mainlines Valves mm ...... Millimetre(s) MRC ...... Municipalité régionale de comté MSS ...... Ministère de la Santé et des Services sociaux MTMDET ...... Ministère des Transports, de la Mobilité durable et de l’électrification dans les transports MTQ ...... Ministère des Transports du Québec MW ...... Megawatt(s) N/A ...... Not Applicable

N2O ...... Nitrous oxide NAICS ...... North American Industry Classification System NBC...... National Building Code NEB ...... National Energy Board NGOs ...... Non-government organizations

NO2 ...... Nitrogen dioxide

NOx...... Nitrogen oxides most relevant for air pollution NPRI :...... National Pollutant Release Inventory NPS ...... Nominal Pipe Size NRC ...... Natural Resources Canada

O3 ...... Ozone

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OCC ...... TransCanada’s Operations Centre OPP...... Overpressure Protection OPR ...... Onshore Pipeline Regulations PDA ...... Project Development Area PM ...... Particulate Matter

PM2.5 ...... Particulate Matter less than 2.5 micrometres in diameter

PM10 ...... Particulate Matter less than 10 micrometres in diameter PNGTS ...... Portland Natural Gas Transmission System ppb ...... Parts per billion Program ...... TQM Reinforcement Program Project ...... TQM Reinforcement and Asset Purchase Project PST ...... Provincial Sales Tax RAA ...... Regional Assessment Area RDOCECA : ...... Regulation respecting mandatory reporting of certain emissions of contaminants into the atmosphere ROW ...... Right-of-Way SAR ...... Species at Risk SARA ...... Species at Risk Act SCADA ...... Supervisory Control Data Acquisition System SNC-Lavalin ...... SNC-Lavalin GEM Québec Inc.

SO2 ...... Sulfur dioxide SOMC ...... Species of Management Concern SIH ...... Système d'informations hydrogéologique TC Energy ...... TC Energy Corporation TCPL ...... TransCanada PipeLines Limited TOC...... Total Organic Compound(s) TQM ...... Trans Québec & Maritimes Pipeline Inc. TWS ...... Temporary Workspace UDA...... Groupe Conseil UDA inc. UPS ...... Uninterruptible Power Supply VC ...... Valued Component VFD ...... Variable Frequency Drive VOC ...... Volatile Organic Compound(s) WSP ...... WSP Canada Inc.

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1 INTRODUCTION

TRANS QUÉBEC & MARITIMES PIPELINE INC.

Trans Québec & Maritimes Pipeline Inc. (TQM) is an energy carrier with a mandate to develop and operate its pipeline system safely, efficiently and profitably across Québec. The company is mandatary for the TQM Pipeline and Company, Limited Partnership owned equally by two major Canadian companies involved in the natural gas industry: Énergir, L.P. (Énergir) and TransCanada PipeLines Limited (TCPL), an affiliate of TC Energy Corporation (TC Energy). TQM's regulated assets include 572 km of pipeline and auxiliary infrastructures. In addition, the TQM pipeline has 31 delivery points and two compressor stations (CS).

THE TQM REINFORCEMENT AND ASSET PURCHASE PROJECT

The TQM Reinforcement and Asset Purchase Project (the ‘Project’) is part of an overall program (TQM Reinforcement Program (the ‘Program’)) that encompasses a joint facility planning effort between TQM, Énergir, and TCPL. The TQM Reinforcement Program is required meet existing contractual obligations on the TCPL Canadian Mainline to the Énergir Eastern Delivery Area (EDA) where Énergir holds a distribution franchise. Growing demand from natural gas consumers in Énergir’s distribution system in the Montérégie and Estrie regions is driving a shift in load consumption within the EDA. The Program will provide a long-term facility solution to manage increasing loads and changes in how gas is consumed and transported on the TCPL Canadian Mainline, TQM System and Énergir’s distribution system in the Montérégie and Estrie regions. The Program will also reinforce the security of supply through the TQM System while minimizing the construction of new facilities by TQM, Énergir, and TCPL. The Project has three components:  The construction and operation of a new CS to be built by TQM in the City of Bromont on a greenfield site located adjacent to the TQM right-of-way (ROW) (Bromont CS).  The acquisition and continued operation of the Sabrevois Delivery Station, the Sabrevois Pipeline (64 km), 7 lateral lines (11 km), and auxiliary infrastructure (Sabrevois Assets or the Sabrevois Asset Purchase).  The construction and operation of a new interconnection, by TQM, to the Énergir new Delivery Station in the City of Saint-Basile-le-Grand (Saint-Basile Interconnect). Subject to regulatory approval, Project construction is planned to start in Q3 2021 with an in service date of November 2022. TCPL and Énergir are also pursuing two additional components that make up the overarching TQM Reinforcement Program:  A C1 Unit Addition at the existing TCPL Station 802 facility in Saint-Philippe to be permitted and constructed separately by TCPL.  The permitting and construction of a new delivery station and odourization facilities.in Saint-Basile-le-Grand by Énergir. All the above-mentioned components are necessary for the Program to meet its objectives. Figure 1 (Appendix A) provides an overview map of the Program components.

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REGULATORY CONTEXT

An overview of the key federal and provincial approvals required for the Project is included in Table 1-1. Table 1-1 Overview of Approvals to be Obtained in the Context of the Project

Regulatory Authorities Project Component Régie de l’énergie CPTAQ1 MELCC2 NEB3 1. Bromont CS X X 2. Sabrevois Asset Purchase X X 4 3. Saint-Basile Interconnect X Notes: 1 Commission de protection du territoire agricole du Québec 2 Ministère de l’Environnement et de la Lutte contre les changements climatiques 3 National Energy Board 4 Due to their common utility, the three aforementioned Project components will be part of a single application to the NEB.

FEDERAL

The Project requires approvals from federal and provincial authorities prior to its implementation. The Project is subject to the regulatory authority of the NEB pursuant to sections 52, 58 and 74 of the NEB Act and will require a Certificate of Public Convenience and Necessity and related approvals to construct the Bromont CS and the Saint-Basile Interconnect, and to acquire the Sabrevois Assets, which will be operated as part of the TQM System. An order pursuant to section 52 will authorize the continued operation of the Sabrevois Assets. An order pursuant to section 58 will authorize the construction and operation of the Bromont CS and the Saint-Basile Interconnect. An order pursuant to section 74 will grant TQM leave to purchase the Sabrevois Assets from Énergir, in accordance with the Sale Agreement. Application to the NEB under section 52 and 58 of the NEB Act requires the preparation of an Environmental and Socio-economic Assessment (ESA) report. Activities associated with the Project are not listed on the Regulations Designating Physical Activities; therefore, they do not require an environmental assessment under the Canadian Environmental Assessment Act, 2012 (CEA Act, 2012). As part of the TQM Reinforcement Program, this Application is being submitted to the Board concurrently with TCPL’s submission of a section 58 application for the Station 802 C1 Unit Addition project. Since the Project does not affect any navigable watercourses, the Navigation Protection Act does not apply. The Species at Risk Act (SARA) applies to all extirpated, endangered or threatened wildlife species listed in Schedule 1 as being at risk and to their critical habitat within all federal lands in Canada. Environment Canada is responsible for administering the SARA for terrestrial species. An authorization pursuant to section 73 of SARA might be required if it is determined that the Project will have an effect on a listed wildlife species, any part of such species’ critical habitat, or the residences of such critical species.

PROVINCIAL & MUNICIPAL

The Régie de l’énergie under the Loi sur la Régie de l’énergie (RLRQ c R-6.01)1 shall reconcile the public interest, consumer protection and the fair treatment of the electric power carrier and of distributors. It shall promote the satisfaction of energy needs in a manner consistent with the Government’s energy policy objectives and in keeping with the principles of sustainable development and individual and collective equity. For the Sabrevois Asset Purchase, Énergir requires an

1 Act respecting the Régie de l’énergie.

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authorization to dispose of the Sabrevois Assets. Further, as a part of the TQM Reinforcement Program, Énergir will require an authorization for its proposed Saint-Basile Delivery Station to which the TQM System will interconnect with. The CPTAQ1 is responsible for the designation and protection of the agricultural lands under the Loi sur la protection du territoire et des activités agricoles (LPTAA), (RLRQ c P-41.1)2. The LPTAA also ensures the protection of sugar bushes covering an area of at least 4 ha, and assumed to be suitable for the production of maple syrup, located within a designated agricultural zone. The Bromont CS and Saint-Basile Interconnect will be implemented in designated agricultural land protected by the CPTAQ, and as such, a request to use the land for purposes other than agriculture must be submitted to the CPTAQ. TQM will comply with relevant and applicable provincial and municipal laws. An application for a Certificate of Authorization for an industrial project will be prepared and filed with the MELCC for the Bromont CS. The Loi sur les espèces menacées ou vulnérables (LEMV) (RLRQ c E-12.01)3 applies to threatened or vulnerable wildlife and plant species designated under Division 3 of the LEMV and live in Québec or are imported into Québec. The Centre de données sur le patrimoine naturel du Québec (CDPNQ) is the provincial agency that manages data regarding these species. The CDPNQ is managed jointly by the MELCC for floristic species and the Ministère des Forêts, de la Faune et des Parcs (MFFP) for wildlife species.

ASSESSMENT SCOPE

Scoping is the process of identifying the physical facilities and activities to include within the ESA, and which biophysical and socio-economic elements are likely to be affected. The full Project scope is provided in Section 3. Biophysical and socio-economic elements likely to be affected by the Project were considered. Details on Valued Components (VCs) assessed within this ESA, and rationale for their selection, are further detailed in Section 5. Potential effects of decommissioning or abandonment activities will be assessed in accordance with applicable regulatory requirements at the time of decommissioning or abandonment.

PROJECT TEAM

This ESA report was prepared by Groupe Conseil UDA inc. (UDA), with the assistance of two subcontractors. The companies responsible for the various studies supporting the Project are presented in Table 1-2. Table 1-2 Overview of the Studies Supporting the Project ESA Supporting Studies Company Ecological characterization report UDA Air assessment SNC-Lavalin GEM Québec Inc. (SNC-Lavalin) Noise study WSP Canada Inc. (WSP) Environmental Protection Plan (EPP) UDA

CONCORDANCE WITH THE NEB FILING MANUAL

In order to assist the regulators in locating the NEB requirements in this ESA report, the following Table 1-3 was prepared based on the NEB Filing Manual (NEB, 2017) as a reference.

1 Québec Commission for Protection of Agricultural Land. 2 Act respecting the preservation of agricultural land and agricultural activities (ARPALAA). 3 Act respecting threatened or vulnerable species

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Table 1-3 Concordance with Guide A Facility Application – A.2 ESA of the NEB Filing Manual Filing Section in Manual Filing Requirement this ESA No Report A.2.5 Description of the Environmental and Socio-Economic Setting 1. Identify and describe the current biophysical and socio-economic setting of each element (i.e., baseline information) in the area where the Project is to be carried out. 2. Describe which biophysical or socio-economic elements in the study area are of ecological, economic or human importance and require more detailed analysis taking into account the results of consultation (see Table A-1 for examples). Where circumstances require more detailed information in an ESA, see:  Table A-2 – Filing Requirements for Biophysical Elements; or  Table A-3 – Filing Requirements for Socio-Economic Elements. 3. Provide supporting evidence (e.g., references to scientific literature, field studies, local and traditional knowledge, previous environmental assessment and monitoring reports) for:  Information and data collected; 4  Analysis completed;  Conclusions reached; and  The extent of professional judgment or experience relied upon in meeting these information requirements, and the rationale for that extent of reliance. 4. Describe and substantiate the methods used for any surveys, such as those pertaining to wildlife, fisheries, plants, species at risk (SAR) or species of special status, soils, heritage resources or traditional land use, and for establishing the baseline settings for the atmospheric and acoustic environment. 5. Applicants must consult with other expert federal, provincial or territorial departments and other relevant authorities on requirements for baseline information and methods. A.2.6 Effects Assessment Identification and Analysis of Effects Describe the methods used to predict the effects of the Project on the biophysical and socio-economic 1. 5 elements, and the effects of the environment on the Project. Predict the effects associated with the proposed Project, including those that could be caused by construction, operations, decommissioning or abandonment, as well as accidents and malfunctions. Also 2. include effects the environment could have on the Project. For those biophysical and socio-economic 6 elements or their VCs that require further analysis (see Table A-1), provide the detailed information outlined in Tables A-2 and A-3. Mitigation Measures Describe the standard and Project specific mitigation measures and their adequacy for addressing the 1. Project effects, or clearly reference specific sections of company manuals that provide mitigation measures. 6 Ensure that referenced manuals are current and filed with the NEB. Ensure that commitments about mitigation measures will be communicated to field staff for implementation 2. 7 through an EPP. Describe plans and measures to address potential effects of accidents and malfunctions during construction 3. 8 and operation of the Project. Evaluation of Significance After taking into account any appropriate mitigation measures, identify any remaining residual effects from 1. 6 the Project. Describe the methods and criteria used to determine the significance of adverse effects, including defining 2. 5 and 6 the point at which any particular effect on a VC is considered “significant”. Evaluate the significance of residual adverse environmental and socio-economic effects against the defined 3. criteria. 6 Evaluate the likelihood of significant, residual adverse environmental and socio-economic effects occurring 4. and substantiate the conclusions made.

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Table 1-3 Concordance with Guide A Facility Application – A.2 ESA of the NEB Filing Manual Filing Section in Manual Filing Requirement this ESA No Report A.2.7 Cumulative Effects Assessment Scoping and Analysis of Cumulative Effects Identify the VCs for which residual effects are predicted, and describe and justify the methods used to 1. 5 predict any residual effects. For each VC where residual effects have been identified, describe and justify the spatial and temporal 2. 5 and 6 boundaries used to assess the potential cumulative effects. Identify other physical works or activities that have been or will be carried out within the identified spatial 3. and temporal boundaries for the cumulative effects assessment. Identify whether the effects of those physical works or activities that have been or will be carried out would 4. be likely to produce effects on the VCs within the identified boundaries. Where other physical works or activities may affect the VCs, for which residual effects from the applicant’s proposed Project are predicted, continue the cumulative effects assessment, as follows: 6  Consider the various components, phases and activities associated with the applicant’s Project that could interact with other physical work or activities; 5.  Provide a description of the extent of the cumulative effects on VCs;  Where professional knowledge or experience is cited, explain the extent to which professional knowledge or experience was relied upon and justify how the resulting conclusions or decisions were reached. Mitigation Measures for Cumulative Effects Describe the general and specific mitigation measures, beyond Project-specific mitigation measures 1. 6 already considered, that are technically and economically feasible to address any cumulative effects. Evaluation of Significance of Cumulative Effects After taking into account any appropriate mitigation measures for cumulative effects, identify any remaining 1. 6 residual cumulative effects. Describe the methods and criteria used to determine the significance of remaining adverse cumulative 2. effects, including the defining point at which each identified cumulative effect on a VC is considered 5 “significant”. 3. Evaluate the significance of adverse residual cumulative effects against the defined criteria. Evaluate the likelihood of significant, residual adverse cumulative environmental and socio-economic 6 4. effects occurring and substantiate the conclusions made. A.2.8 Inspection, Monitoring and Follow-up Describe inspection plans to ensure compliance with biophysical and socio-economic commitments, 1. consistent with sections 48 (EPP), 53 (General Compliance), and 54 (Construction Inspection) of the Onshore Pipeline Regulations (OPR). Describe the surveillance and monitoring program for the protection of the pipeline, the public and the 7 2. environment, as required by section 39 of the OPR. Consider any particular elements in the Application that are of greater concern and evaluate the need for a 3. more in-depth monitoring program for those elements. For CEA Act designated projects, identify which elements and monitoring procedures would constitute a 4. N/A* follow-up under the CEA Act, 2012.

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Table 1-3 Concordance with Guide A Facility Application – A.2 ESA of the NEB Filing Manual Filing Section in Manual Filing Requirement this ESA No Report Table A-2 Filling Requirements for Biophysical Elements  Physical and meteorological environment  Soil and soil productivity  Vegetation  Water quality and quantity  Fish and fish habitat  Wetlands 4 and 6  Wildlife and wildlife habitat  SAR or Species of Special Status  Air emissions  Greenhouse Gas (GHG) emissions  Acoustic environment Table A-3 Filling Requirements for Socio-Economic Elements  Human occupancy and resource use  Heritage (Historic) resources  Navigation and navigation safety  Traditional land and resource use 4 and 6  Social and cultural well-being  Human health and aesthetics  Infrastructure and services  Employment and economy Note : Not Applicable (N/A): Project activities associated with the Project are not listed on the Regulations Designating Physical Activities. Therefore, the Project does not require an environmental assessment under the CEA Act, 2012.

ESA REPORT STRUCTURE

The ESA report is presented in the following sections:  Section 1: Introduction.  Section 2: Consultation and Engagement – provides an overview of stakeholder consultation and any key environmental and socio-economic issues raised during the consultation program.  Section 3: Project Description – provides a description of the need for the Project, alternatives to the Project, an overview of the Project components, the activities foreseen during construction and operation, and the Project’s schedule.  Section 4: Baseline Conditions – provides a description of the existing environmental and socio-economic baseline conditions in the Project surroundings.  Section 5: Assessment Methodology – provides a description of the effects assessment methodology, including descriptors used to characterize residual effects and significance criteria.  Section 6: Effects Assessment – identifies potential source of effects for each selected VC, recommends key mitigation measures to avoid or reduce potential effects, characterizes and determines significance of residual effects for each selected VC, evaluates the effects of the environment on the Project and provides an assessment of cumulative effects.  Section 7: Inspection, Monitoring and Follow-Up – outlines the proposed activities foreseen during inspection, monitoring, and follow-up programs.  Section 8: Accidents and Malfunctions – provides an overview of the Project-specific EPP, and the Project-Specific Emergency Response Plans.  Section 9: Summary – provides an overview of the ESA and its conclusions.  Section 10: References – offers a bibliography of all the sources used for the preparation of the ESA report.

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2 CONSULTATION AND ENGAGEMENT

Stakeholder engagement for the Project was designed and conducted by TQM in accordance with the principles of TQM’s stakeholder engagement, as well as community relations and communications best practices and guidance provided in the NEB Filing Manual (NEB, 2017). Project stakeholder engagement is designed to:  Foster positive relationships with stakeholders.  Provide opportunities for stakeholder input to the Project planning and development process.  Provide information for stakeholders that minimizes uncertainty and increases clarity. TQM’s stakeholder engagement is undertaken in a phased approach and implemented using open communication and stakeholder participation practices. The phases of engagement include:  Identification of stakeholders and development of notification materials.  Notification and engagement.  Continuous communication with respect to Project updates. TQM initially identified stakeholders from the following stakeholder groups:  Landowners and occupants whose lands are crossed by the Sabrevois Assets or other Project components;  Community members;  Municipal elected officials or representatives (municipalities and municipalités régionales de comté (MRCs)1;  Elected officials (provincial and federal);  Government agencies;  Agricultural unions;  Non-government organizations (NGOs); and  Emergency responders.

PUBLIC CONSULTATION

TQM has identified landowners and communities within the MRCs Brome-Missisquoi, de la Haute-Yamaska, du Haut- Richelieu and de La Vallée-du-Richelieu, federal and provincial elected officials and regulatory agencies, governmental organizations, NGOs, as well as other stakeholders who would potentially be affected by and interested in the Project. A notification letter has been sent or will be sent to all stakeholders, including a Project fact sheet and NEB brochures.

BROMONT CS

Regarding the Bromont CS component of the Project, public consultation has included:  Meetings, telephone calls, and emails with the City of Bromont (ongoing since March 2019).  Presentation to the City of Bromont on March 25, 2019 about the Project including specific information regarding the proposed construction of the Bromont CS.  Negotiations with landowners regarding the purchase of lands.  Organization of an existing TQM compressor station site tour for municipal councillors on August 21, 2019.  Meeting with a campground (Camping Vélo Bromont) in the City of Bromont on August 20, 2019.  Meeting with emergency responders planned for August 2019.  Sending notification letters and notification packages to citizens in Bromont on August 13, 2019.  Open house planned in collaboration with the City of Bromont in late September 2019.

1 Regional county municipalities.

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Questions were raised regarding the following issues by landowners and stakeholders regarding the Bromont CS. A summary of concerns raised by stakeholders are outlined in Table 2-1.

Table 2-1 Summary of Issues – Bromont CS

Comment or Issue TQM’s Response(s) Visual Impact A visual impact assessment will be completed. During the detailed engineering phase of the Project, mitigation measures will be considered to reduce any potential visual impact. Noise During Operations, the compressor station will comply with noise requirements, according to MELCC Instruction 98-01 which is dependent on baseline levels: • The maximum decibel that the compressor station can emit is 45 A-weighted decibels (dBA) during the day and 40 dBA at night at the residences (see Appendix C for more information). • The maximum decibel that the compression station can transmit at the property boundary is 70 dBA.

TQM will put in place any measures that are necessary in order to comply with the noise requirements. Forest clearing The project is subject to the laws and regulations in force which include environmental requirements. TQM will respect all environmental regulations related to the protection of forests and will minimize tree cutting related to the project to the extent practical.

Engagement with the City of Bromont and stakeholders is on-going and TQM will continue to respond to questions and address concerns as they arise. Although TQM is not aware of any outstanding concerns, TQM will continue to respond to questions or address concerns as they arise.

SABREVOIS ASSET PURCHASE

For the Sabrevois Asset Purchase component of the Project, consultation has included:  Sending notification letters and notification packages to landowners on December 13, 2018.  Sending notification letters and notification packages to identified stakeholders on December 13, 2018.  Sending updated notification letters and notification packages to landowners on August 12, 2019. Questions were raised regarding the following issues by landowners and stakeholders regarding the Sabrevois Asset Purchase. A summary of issues raised by stakeholders are outlined in Table 2-2.

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Table 2-2 Summary of Issues – Sabrevois Asset Purchase

Comment or Issues TQM’s Response(s) Required construction activities The Sabrevois Asset Purchase does not involve construction work, but simply an asset transfer between two companies. Safety Considerations TCPL, operating on behalf of TQM, has an operations and maintenance program that includes measures to assure the safety of citizens. Also, the ROW is frequently patrolled by foot or aerially to verify any infringement or prohibited activities. Landowner restrictions along the ROW The current obligations of landowners whose properties are traversed by the existing pipeline are similar despite the potential jurisdictional change from a provincial to federally regulated pipeline. In this case, the land rights acquired by Énergir along its servitude recognize that the operation and maintenance of natural gas pipelines is the primary function of the pipeline within the easement. The terms and conditions of these servitudess prohibit any work or traffic within the easement's ROW, without prior written approval from Énergir. The same is true for landowner obligations under NEB regulated pipelines, as certain activities in the ROW and in the 30 metre prescribed zone can not be undertaken without the prior approval of the pipeline owner or the NEB.

Although TQM is not aware of any outstanding concerns, TQM will continue to respond to questions or address concerns as they arise.

SAINT-BASILE INTERCONNECT

For the Saint-Basile Interconnect component of the Project, consultation has included:  Meeting with the municipality of Saint-Basile presenting information on the Project on November 21, 2018.  Sending Project information (including the Project fact sheet) to the MRC of Vallée-du-Richelieu and emergency responders on January 2019.  Sending Project information (including the Project fact sheet) to the municipality of Saint-Basile, the fire department, emergency responders and the MRC of Vallée-du-Richelieu on August 20, 2019. Questions were raised regarding the following issues by landowners and stakeholders regarding the Saint-Basile Interconnect. A summary of issues raised by stakeholders are outlined in Table 2-3.

Table 2-3 Summary of Issues – Saint-Basile Interconnect

Comment or Issue TQM’s Response(s) Regional road Construction work might overlap with the construction of the Saint-Basile Interconnect. The municipality requested that TQM coordinate construction schedules to prevent any disruption of the road construction. TQM agreed to this request.

Although TQM is not aware of any outstanding concerns. TQM will continue to engage with stakeholders to provide updated Project information and to address any questions or concerns that might arise.

REGULATORY CONSULTATION

TQM has engaged with the MELCC, and with municipal representatives of the cities of Bromont and Saint-Basile-le- Grand. The City of Bromont expressed no concerns during the meetings that occurred on March 25, 2019 and June 18, 2019. Engagement with the City of Bromont is ongoing and TQM will continue to address questions or concerns as they arise. TQM has communicated with Environment and Climate Change Canada (ECCC) and its Canadian Wildlife Service as well as with the MELCC and MFFP for data regarding the CDPNQ. They indicated the known occurrence of a federally

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and provincially listed species, core wildlife habitats and critical habitats. Furthermore, ECCC provided links to other sites of interest regarding wildlife Species of Management Concern (SOMC)1. TQM met with MELCC representatives on November 15, 2018. No substantive concerns were raised during the meeting. To date, all issues or concerns raised during TQM consultation and engagement program have been addressed.

ABORIGINAL ENGAGEMENT

As a result of the assessment conducted in accordance with the NEB’s Filing Manual, TQM did not identify any Aboriginal groups that would be potentially affected by the Project. TQM intends to communicate employment and contracting opportunities to the Mohawks, Algonquins, and Abenakis as the Project progresses. For more details on TQM’s Aboriginal Engagement Program, see Section 13 of the Application.

ONGOING ENGAGEMENT

TQM will continue to engage stakeholders throughout all stages of the Project and respond to questions and concerns.

Once the Project components are in service, regionally based TC Energy liaisons will continue to build and maintain relationships through consistent and ongoing communication with stakeholders.

1 SOMC include species listed at the federal level under the SARA (S.C. 2002, c 29) or by the COSEWIC (2018a) and species listed under Québec’s LEMV (L.R.Q. c. E-12.01) or considered by the MFFP as species likely to be designated threatened or vulnerable (MFFP, 2018b).

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3 PROJECT DESCRIPTION

NEED FOR THE PROJECT

The Project is required to meet existing contractual obligations in the Énergir EDA used by the distributor to serve its franchise, to reinforce security of supply through the TQM System, and provide a long-term facility solution to manage increasing loads and changes in how gas is consumed and transported on the TQM System and Énergir’s distribution system, in the Montérégie and Estrie regions. The Project is the result of a collaborative facilities planning effort between TQM, Énergir and TCPL, and results in the lowest cost facility solution for the Énergir network while also enhancing security of supply for the province of Québec. The Énergir franchise has experienced increasing loads and changes in the distribution of gas consumption between/within the Montérégie and Estrie regions. The Project is part of a long-term facility solution (the TQM Reinforcement Program) to address the shifts in the transportation and distribution of gas in order to continue to meet existing contractual obligations in the EDA as well as reinforce the security of supply to this region. The Project will increase the capacity of the TQM system to serve these markets while minimizing the construction of new facilities by TQM, Énergir, and TCPL. The Program is the result of a collaborative facilities planning effort between TQM, Énergir, and TCPL. The Project, as part of the overall TQM Reinforcement Program, results in the lowest cost facility solution, provides flow path diversity to TQM and Énergir and reinforces the security of gas supply for the pipeline network in Québec. All components of the TQM Reinforcement Program, including the Project are interdependent and required to meet the needs of the TQM Reinforcement Program. The Project therefore will only proceed if all components of the TQM Reinforcement Program receive the necessary regulatory authorizations to proceed.

ALTERNATIVES TO THE PROJECT

Alternatives to or “alternative means” are the various technically and economically feasible ways under consideration that would allow a project to be carried out (Canadian Environmental Assessment Agency (CEA Agency), 2015). The use of interim pressure agreements, which have been utilized while the Project is under development are not sustainable over the long term as these agreements are subject to changes in future demand on any one of the Énergir, TQM or TCPL systems. Thus, these agreements were not considered as long-term solutions to manage Énergir’s flow distribution changes. The Project provides the needed TQM System capacity to enable the redistribution of flows on the TQM and Énergir systems while also reinforcing both pipeline networks and minimizing the facilities required between TQM, Énergir and TCPL. More information is provided in the System Design section of the Application.

OVERVIEW OF PROJECT COMPONENTS AND KEY TECHNICAL FEATURES

The following section provides an overview of the components and technical features for the Project to be located in the administrative region of the Montérégie, in the southwest part of Québec. Project location maps are presented in Appendix A (Figure 2). The Project has three components:  Bromont CS: Construct and operate a new CS in the City of Bromont. This facility will pull gas from the Sabrevois Pipeline, compress it to a higher pressure, and then inject the gas onto the TQM East Hereford Mainline. It will maintain capacity while completing the required flow shift for Énergir.  Sabrevois Asset Purchase: Acquire a pipeline and associated assets currently owned by Énergir, namely the Sabrevois Assets. The latter will provide a new custody transfer point between the TCPL and TQM Mainlines at the Sabrevois Delivery Station.

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 Saint-Basile Interconnect: Construct and operate a new interconnection in the City of Saint-Basile-le-Grand, namely the Saint-Basile Interconnect. Énergir’s proposed Saint-Basile Delivery Station will serve as a new delivery point for Énergir to redistribute a portion of the flow from the existing Saint-Mathieu Meter Station (connected to the TCPL system). Relative to the Saint-Mathieu Meter Station, Énergir’s proposed Saint-Basile Delivery Station will be interconnected to a pipeline operating at a higher pressure (TQM East Hereford Mainline) and will be closer to Énergir’s critical customers. TQM will design and construct the interconnect from the TQM East Hereford Mainline to the proposed Saint-Basile Delivery Station, while Énergir will be responsible for the design and the construction of the new delivery station. The latter is not subject to the regulatory agency of the NEB and is not included in the scope of this document.

BROMONT CS

The Bromont CS is to be built on lot No. 2 593 399 near the Bergeron East Road in the City of Bromont. The Project component is entirely located on private land and will require approximately 8.31 ha of new land. The Bromont CS component PDA will be approximately 8.31 ha and comprised of the following components:  3.29 ha for the CS footprint (2.84 ha native vegetation (woodland (about 1.91 ha), wetland (about 0.78 ha) and early successional vegetation (about 0.15 ha)), 0.24 ha bare ground, and 0.22 ha mown field).  1.81 ha buffer zone surrounding the CS footprint (1.81 native vegetation (woodland (about 0.89 ha), wetland (about 0.70 ha) and early successional vegetation (about 0.23 ha)). The buffer zone is an area required for security purposes (i.e. fire) between the Bromont CS and its surroundings.  2.46 ha TWS of which 1.04 ha overlaps the buffer zone (1.47 ha native vegetation (woodland (about 1.21 ha), wetland (about 0.02 ha) and early successional vegetation (about 0.24 ha)), 0.98 ha cultivated land, and 0.01 ha existing graveled path.  1.79 ha permanent access road (1.31 ha cultivated land, 0.43 ha existing graveled path, and 0.05 ha bare ground). The CS will be comprised of one electric motor driven 7 megawatts (MW) (ISO-rated power output) compressor package and one gas turbine driven 7 MW (ISO-rated power output) compressor package. Each compressor package will be housed in its own designated compressor building. The gas turbine compressor package is intended to run during times where the electric motor driven unit is unavailable, including primary utility outages and routine maintenance. A gas-fired Auxiliary Power Unit (APU) is required to provide the electrical capacity to the gas turbine compressor package and other critical auxiliary support systems during a loss of primary utility power. The gas turbine compressor package is estimated to run 19% of the time, while the APU is estimated to run 5% of the time. It should be noted that this represents an estimation made by TQM of the operating time, based on anticipated needs, and that this estimate could be adjusted according to unforeseen conditions. In addition to the two compressor buildings, their units and the APU, the Bromont CS will also include the following:  Aerial coolers to cool the discharge gas.  Two designated steel frame compressor buildings each designed with noise attenuation equipment and capacity to house either the electric motor driven or gas turbine-driven compressor package.  A skid-mounted electrical/control building to contain the motor control center, station control panel and Uninterruptible Power Supply (UPS).  An electrical transformer to provide station power from the electrical utility provider (to be validated during detailed design).  A skid-mounted Variable Frequency Drive (VFD) and transformer building to house the VFD and transformer (required for operation of the electric motor driven compressor package).  VFD coolers to cool the VFD during operation.

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 A skid-mounted mechanical building to house air compressors, air dryers, air receiver, glycol heating system (i.e., boilers, pumps, an expansion tank) and corresponding interconnecting piping.  A skid-mounted personnel building will be used to house the Supervisory Control Data Acquisition System (SCADA) and provide general office space.  A skid-mounted utility gas building.  A heated storage building for spare parts and equipment storage.  Interconnect suction and discharge piping and associated station suction and discharge isolation valves to connect the Bromont CS to the TQM pipeline. A technical description of the facility components is provided in Table 3-1.

Table 3-1 Bromont CS Components Components Description Type and power of electric motor 7 MW turbo-compressor package (nominal ISO 8.3 MW) consisting of an electric motor driven compressor package (unit A1) driven compressor (9,000 HP). Type and power of gas turbine 7 MW turbo-compressor package (nominal ISO 8.3 MW) consisting of (dry low emissions) compressor package (unit A2) engine and centrifugal compressor. Fuel type for the gas turbine Fuel type is pipeline quality sweet natural gas. The fuel source is taken from the suction yard compressor package (unit A2) piping and conditioned (filtered, regulated, and heated) prior to injection into the gas turbine combustors. Piping outside diameter, wall Large bore CS piping will consist of the following: thickness, material type and grade − 610 mm (NPS1 24) x 15.0 mm WT, GR. 483, CAT II, -45°C − 610 mm (NPS 24) x 14.3 mm WT, GR. 483, CAT II, -45°C − 508 mm (NPS 20) x 15.9 mm WT, GR. 414, CAT II, -45°C − 406 mm (NPS 16) x 14.3 mm WT, GR. 414, CAT II, -45°C − 406 mm (NPS 16) x 7.1 mm WT, GR. 414, CAT II, -45°C − 305 mm (NPS 12) x 17.5 mm WT, GR. 241, CAT II, -45°C, Inlet and outlet design pressure 10,275 kPag Maximum operating pressure 9,930 kPag Inlet and outlet temperature -45ºC to +75ºC Station schematic of buildings, relief Based on the current preliminary design and plot plan, the planned facility will consist of two valves compressor enclosures to house the electric motor driven and gas turbine compressor packages. Auxiliary enclosures (APU) generator skid, heated and cold storage, utility gas, and electrical, VFD, mechanical, etc. to house control and operating equipment. The compressor enclosures will be prefabricated, structural steel, completed with acoustically designed wall and roof panels, and will incorporate fire and gas detectors. The auxiliary enclosures will be skid mounted and supported on appropriate subsurface structures as recommended through the design. All enclosures where personnel may be required to enter will be completed with appropriate heating and ventilation equipment. Basic description of the surge control Pressure control is provided by TC Energy’s Operations Control Centre (OCC). The OCC is system, pressure control and a 24-7 operation that monitors and controls real time pipeline pressures through a SCADA overpressure control system. System pressures are proactively monitored and analyzed for trends by the Control Centre Operators to ensure operational efficiency and Overpressure Protection (OPP). In the event of overpressure, the Cathodic Protection (CP) will be protected by the following employed OPP measures: − The recycle (anti-surge) valve for each unit will be connected downstream of the respective compressor unit discharge valve and upstream of the respective unit discharge check valve. The recycle valve will increase the flow through the compressor as required to maintain the operating point away from surge by circulating more gas flow and reducing compressor head. − The equipment as provided by the vendor will monitor actual inlet flow and differential pressure across the compressor unit through a pressure differential transmitter, and is equipped with algorithms to detect and avoid surge. − The station pressure control will be maintained by increasing or decreasing the compressor speed. The station suction and discharge pressure will be monitored using pressure transmitters. The station pressure set points are set by the OCC.

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Table 3-1 Bromont CS Components Components Description − A self-contained and independent station discharge pressure-relief device will provide the last level of station OPP. TQM will verify that the OPP system design contains: − OPP design drawings, including a process and instrument diagram or as-built drawings. − Planned maintenance programs for OPP devices and systems, including its frequency and type of maintenance. − Operational philosophy that details all reasonable emergency scenarios that could apply to the OPP system, such as loss of power or valve failure (i.e., TQM will ensure the pressure control system and the OPP system operates independently so that a failure in one system does not cause the other system to become inoperative). − OPP device calibration and maintenance records. With respect to verification and monitoring of OPP, TQM ensures that the maintenance programs and their frequency meet the latest available revision (at the commencement of detailed engineering) of CSA Z662. The OPP system will be automatic and continuously operating without relying on manual intervention. Basic description of An Emergency Shutdown (ESD) pushbutton will be installed at all exit doors in the emergency shutdown compressor buildings and near the scrubber. Perimeter ESD pushbuttons will be added to all fence egress gates and tied-in to the single fence ESD. The site ESD pushbutton at the control panel in the electrical/control building will trigger a station ESD. Fire or gas detection in the compressor building will also trigger a station ESD. As such, the ESD system can be initiated from multiple locations throughout the CS and at each egress point from the CS. The ESD system will trigger the following hard-wired functions during a station ESD: − The gas will be blocked out of the station by the triggered closure of the two station suction side valves and the two station discharge side valves, isolating the station from the mainlines. Subsequently, the discharge blowdown valve will be triggered open to blow down the station piping. − The operating compressor unit will be triggered to stop immediately and depressurized throughout the station piping. The unit will be completed with a control system that allows multiple types of shutdowns based on different events or scenarios (e.g., one level of shutdown will bring the unit to a complete stop as quickly as possible while maintaining auxiliaries, such as the lube oil system). The blowdown valve(s) and blowdown piping will be installed in a location to discharge gas at a safe distance from the compressor buildings, auxiliary equipment and the surrounding area. The ESD system will be capable of isolating the CS from the mainlines and depressurizing the CS. The ESD system will be powered by an Uninterruptible Power Supply (UPS) system, but will be wired fail safe, so that in the event of power loss it will isolate and depressurize the facility to put it into a safe state. The ESD design will be finalized during detailed engineering. Description of boilers and pressure The following boiler and pressure vessels are anticipated to be installed as part of the CS vessels design: − The fuel gas system will include new fuel gas filter separators and a new fuel gas coalescing filter. − The utility gas system will include a new odorant tank and utility gas heaters. − All new pressure vessels listed above will be built to TC Energy’s specification for pressure vessels TES-ME-PV1-GLE. − The glycol heating system will include natural gas boilers. Description of corrosion control The CS piping and facilities will be cathodically protected by CP systems and will include elements appropriately located and sized anode groundbeds and power sources (i.e., rectifiers and thermoelectric generators) as determined by detailed design. The CP systems will be designed in conjunction with the upstream and downstream pipeline systems. In addition, sacrificial anodes might be used at specific locations. Notes: 1Nominal Pipe Size

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Electricity will need to be brought to site, with the implementation of an electric tie-in line from the existing grid, which is outside of the scope of this assessment. The Bromont CS will be designed, constructed and tested in accordance with the provisions of the NEB’s OPR, TC Energy’s specifications and the applicable standards.

SABREVOIS ASSET PURCHASE

TQM will acquire the Sabrevois Delivery Station, 64 km of pipeline between Sabrevois and Shefford, seven (7) lateral lines totaling 11 km and related infrastructure. The delivery station occupies an area of 0.21 ha on lot No. 4 565 500 alongside the chemin des Patriotes (Route 133) in the municipality of Sainte-Anne-de-Sabrevois. The Sabrevois Asset Purchase comprises the following components:  Sabrevois Delivery Station, including 406 mm (NPS 16) Launcher for 406 mm (NPS 16) Mainline.  Énergir Mainline SE28000 from Sabrevois to Shefford (64 km, 406 mm [NPS 16]).  Seven (7) lateral lines: o Granby Lateral (5.49 km, 102 mm [NPS 4]); o Cowansville Lateral (4.98 km, 102 mm [NPS 4]); o Bromont Lateral (0.597 km, 102 mm [NPS 4]); o Farnham Lateral (0.27 km, 102 mm [NPS 4]); o Saint-Alexandre Lateral (3 m, 51 mm [NPS 2]; o Sainte-Brigide Lateral (3 m, 51 mm [NPS 2]; and o Brigham Lateral (3 m, 203 mm [NPS 8]. This lateral previously abandoned, remaining pipe is a pup which was previously cut and capped).  Seven (7) Mainlines Valves (MLV) along the Énergir mainline.  Two (2) anode beds.  Shefford receiver and kicker line.

SAINT-BASILE INTERCONNECT

The Saint-Basile Interconnect is to be implemented on lot No. 3 076 120 alongside Route 116 in the City of Saint-Basile-le-Grand. The Interconnect footprint will be located within TQM’s existing ROW. As part of the TQM Reinforcement Program, Énergir plans to acquire the land on which the Saint-Basile Interconnect is located for its proposed Delivery Station. The Interconnect will require TWS on land to be acquired by Énergir as part of their Saint- Basile Delivery Station project, a provincially regulated project. The Énergir property will be used for the construction and the implementation of Énergir’s proposed Saint-Basile Delivery Station and the Saint-Basile Interconnect component. Therefore, the PDA will be common to both projects. Énergir is scheduled to clear the PDA for construction as part of their project prior to the Saint-Basile Interconnect construction start date. The PDA is approximately 1.04 ha and entirely located on private land. Land use in the PDA consists of: 0.48 ha of cultivated land (46.7%); 0.36 ha of early successional vegetation (34.3%), 0.19 ha of invasive species (18.2%) and 0.009 ha of graveled land (0.8%). The PDA will be approximately 1.04 ha and includes the following components:  0.012 ha for the Interconnect footprint for the expansion of the existing TQM block valve 4 (BV4) (0.009 ha graveled land and 0.003 ha early successional vegetation).  0.12 ha of TWS including temporary access (up to 0.12 ha of early successional vegetation).  The remainder of the PDA will be used for Énergir’s proposed Saint-Basile Delivery Station.

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The exact location of the TWS will be defined within the PDA prior to construction. The piping materials that will be used to build the Saint-Basile Interconnect are presented in Table 3-2.

Table 3-2 Piping Materials for the Saint-Basile Interconnect

Saint-Basile Interconnect Piping Outside Diameter 324 mm (NPS 12) Wall Thickness 12.7 mm Material Type and Grade ASTM A333 Grade 6 Seamless or CSA Z245.1 Grade 241 or Grade 359 Seamless or Electric Resistance Welded (ERW) Material Grades Utilized in Valves, The selection of materials for valves, fittings, and assembly piping will be in accordance with TC Fittings, and Assembly Piping Energy specification TES-MATL-MD1.1 Length Approximately 20 m Coating Internal coating – N/A External coating – As per TC Energy specification TES-CO-EPU-GL,TES-CO-FBE-GL, or TES- CO-PAINT-GL Note: All values, including but not limited to outside diameter, length, grade, coating, and wall thickness, are based on preliminary design and could be subject to change. All material shall be CSA Z662-19 compliant in accordance with TC Energy specification TES-MATL-MD1. Auxiliary and utility piping will be specified per TC Energy material specifications.

TEMPORARY WORKSPACE AREA

It is expected that Project work within the Bromont CS TWS will be conducted entirely on private land to be purchased or leased by TQM. It is expected that all Project work for the Saint-Basile Interconnect component, including the TWS, will be conducted entirely on the existing TQM ROW and private land to be acquired by Énergir. TQM will sign an agreement with Énergir for the TWS, once the property is acquired by Énergir. No additional TWS will be needed during construction outside of the above-mentioned areas.

CONSTRUCTION

BROMONT CS

Subject to regulatory approval, the Bromont CS construction is planned to start in Q3 2021. TQM will employ conventional construction methods and industry best practices. Construction will be done in accordance with the applicable TC Energy specifications, standards and operating practices and with the EPP for this Project.

Construction Activities Construction activities for the Bromont CS will include:  Installation/use of TWS trailers;  Surveying;  Site preparation, including clearing;  Grading;  Installing subsurface structures;  Installing foundations;  Installing compressor building(s) and units;  Installing generators;  Installing auxiliary buildings and equipment;

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 Piping and pressure testing;  Conducting electrical work;  Installing the instrumentation system;  Installing controls;  Commissioning;  Conducting pre-start-up safety review; and  Conducting final site clean-up. A construction team of approximately 50 workers, with a maximum of 200 workers at the peak of construction, will be mobilized on-site. The construction activities are expected to occur 5 days a week, 10 hours a day. Construction equipment and machinery likely to be used for the Bromont CS site include brushing and clearing equipment, excavators, pick-up trucks, bulldozers, drilling equipment and hydrovac trucks.

Construction Sequencing The Bromont CS construction will start with clearing and grubbing, followed by grading activities then installation of foundations and underground services. This will be followed by installation of compressor buildings foundations and ancillary equipment. Structural steel pre-assemblies and structural steel supports will be installed on foundations to accommodate piping, electrical, and instrumentation to and from the compressors, and ancillary equipment. Compressors will be placed on a prepared foundation, piping will be connected, and alignments completed. Modularized electrical equipment shelters will be installed on foundations and cable trays will be installed to and from the equipment. Electrical and instrumentation cables will be pulled out to equipment and terminated. The station will have power supplied from the electrical utility provider to a transformer located on-site. Steel structures will be installed, and transformer mounted on the foundation. Cabling will be run to a low-voltage area within electrical building area of the facility and grounding systems installed. Tie-in from the grid will be scheduled with local utility providers when system completion is reached. Temporary on-site diesel generators will be required for construction until the connection with the electrical utility provider is completed. A summary of the sequencing, description and duration of the main construction activities for the Bromont CS is provided in Table 3-3.

Table 3-3 Summary of Construction Sequencing and Duration for the Bromont CS Duration Main Step Description Activities Period (Estimate) Mobilization to site  Workers, equipment and  Surveying 2-4 months Q3-Q4 machinery mobilization  Delivery 2021  TWS set-up  Circulation  Temporary access road  Trucking improvement or construction  Grading and levelling Site preparation  CS site preparation  Clearing, stripping and 2-4 months Q3-Q4 topsoil storage 2021  Excavating  Site grading Infrastructure and  Drilling or piling  Drilling or piling and 5-8 months Q3 2021- foundation work  Casing installation installing pile caps Q2 2022  Concrete pouring  Concrete works  Concrete curing  Trucking  Backfilling with material from a local quarry

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Table 3-3 Summary of Construction Sequencing and Duration for the Bromont CS Duration Main Step Description Activities Period (Estimate) Equipment delivery,  Equipment delivery and storage  Delivery 12-14 months Q4 2021- installation and  Installing compressors  Trucking Q4 2022 connection  Prefabricated and new equipment  Prefab and equipment installation installation (crane truck)  Piping and valve installation  Welding  Placing heated storage building  Specialized manual work  Installing electrical equipment, wiring and building  Cables racks installation  Instrumentation  Final grading and fencing Hydrovac & NDE for tie-in  Soil excavation by hydrovac to  Soil characterization 1 month TBD to pipeline expose existing piping  Hydrovac excavation  Trucking (hydrovac) to approved disposal site Pre-operating  Piping hydrostatic testing  Specialized manual work 2-4 months Q2-Q3 2022 verifications  Technical, mechanical, electrical verification before start-up Compressor unit start-up  Start up and anomalies detection  Specialized manual work 1-3 months Q3-Q4 2022 Construction site  Workers, equipment and  Traffic 1-3 months Q4 2022- demobilization, temporary machinery demobilization  Trucking Q1 2023 installation dismantling  Clean-up and removal of waste  Grading and levelling and reclamation and debris  Decompaction, if needed  Seeding of disturbed areas with native seeding

SABREVOIS ASSET PURCHASE

Activities considered in the assessment include the ongoing operation and maintenance of the transferred assets. Routine operations and maintenance activities are anticipated to be confined to the existing ROWs and facility sites.

SAINT-BASILE INTERCONNECT

The Saint-Basile Interconnect will connect the TQM mainline at the existing BV4. This new delivery point will serve the Énergir Montérégie region by redistributing a portion of the flow from TCPL’s existing Saint-Mathieu Meter Station. The Saint-Basile Interconnect consists of a tee and valve that will serve to connect the East Hereford Mainline on the TQM System to an Énergir delivery station planned for construction in 2021 as part of the Program. The Interconnect will be located on TQM’s existing ROW and the TWS will be located on land to be acquired by Énergir. TQM will sign an agreement with Énergir for TWS, once acquired. A construction team of about 15 to 20 workers will be required for a period of 4 to 5 weeks. Construction equipment and machinery likely to be used for the Saint-Basile Interconnect site include brushing and clearing equipment, excavators, pick-up trucks, bulldozers, drilling equipment and hydrovac trucks. The construction activities are expected to occur 5 days a week, 10 hours a day. A summary of the sequencing, description and duration of the main construction activities for the Saint-Basile Interconnect is provided in Table 3-4.

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Table 3-4 Summary of Construction Sequencing and Duration for the Saint-Basile Interconnect Duration Main Step Description Activities Period (Estimate) Mobilization  Workers, equipment and machinery  Surveying 3 days Q3-Q4 to site mobilization  Delivery 2021  TWS set-up  Circulation  Temporary access road  Trucking improvement or construction  Granular material spreading Site preparation  Interconnect site preparation  Grading and levelling 3 days Q3-Q4  Stripping and topsoil storage 2021  Excavating

Equipment delivery,  Equipment delivery and storage  Delivery 7 days Q3-Q4 installation and  Prefabricated and new equipment  Trucking 2021 connection installation  Prefab and equipment installation  Final grading and fencing (crane truck)  Welding  Specialized manual work Hydrovac & NDE for  Soil excavation by hydrovac to  Soil characterization 1 days Q3-Q4 tie-in to pipeline expose existing piping  Hydrovac excavation 2021  Trucking (hydrovac) to approved disposal site

Pre-operating  Piping hydrostatic testing  Specialized manual work 2 days Q3-Q4 verifications  Technical, mechanical, electrical 2021 verification before start-up Construction site  Workers, equipment and machinery  Traffic 3 days Q3-Q4 demobilization, demobilization  Trucking 2021 temporary installation  Clean-up and removal of waste and  Grading and levelling dismantling and debris reclamation  Decompaction, if needed

OPERATIONS TCPL operates the TQM System pursuant to an operating agreement between TCPL and TQM. TCPL, on behalf of TQM, will operate the Project in accordance with all applicable legislation, codes and standards, including the NEB’s OPR and CSA Z662-19: Oil and Gas Pipeline Systems (CSA Z662-19), and approval conditions. The TC Energy OCC in Calgary monitors and controls TQM System operations. TCPL applies TC Energy’s corporate policies and operating procedures in its operations of the TQM System that are common to TCPL's operation of other TC Energy federally regulated pipelines.

DECOMMISSIONING AND ABANDONMENT

The Project has been designed to operate for many years. There is no specific timeline for the future decommissioning and eventual abandonment of the facilities. A decision on when to abandon these facilities will be influenced by future service requirements. At the end of Project life, the facility operator will apply to decommission or abandon the facility, as applicable, according to the regulations in force at the time. As specified in section A.2.6.1 of the NEB Filling Manual (2017-01), a separate ESA specific to decommissioning or abandonment activities will be undertaken when the facilities are ready to be decommissioned or abandoned. Mitigation measures will be implemented to reduce effects on VCs that may be affected while undertaking decommissioning or abandonment activities. Accordingly, decommissioning and abandonment are not considered further in this assessment.

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4 OVERVIEW OF BASELINE CONDITIONS

The following section provides an overview of the existing baseline conditions for each of the three Project components. Information was collected from existing literature and Project-specific field surveys.

METHODOLOGICAL CONSIDERATIONS

APPROACH

As described in the NEB Filing Manual, the nature of the Project, together with the environmental and socio-economic setting, establish the extent of interactions between the Project and the environment. Those interactions form the basis on which effects are predicted, and for understanding the appropriate level of detail needed about the setting, interactions, and predicted effects. Accordingly, the supporting level of detail required varies (as per Table A-1 of the NEB Filing Manual – NEB, 2017) depending on the setting and issues raised about the Project. The environmental and socio-economic baseline conditions are presented according to the three Project components defined in Section 3.3. When relevant and appropriate, for certain of the VCs, the description of the environmental and socio-economic baseline conditions is presented inclusively for all three components into a single section. Alternatively, when required, the description of the environmental and socio-economic baseline conditions is done separately with the appropriate level of detail based on the existing circumstances and interactions anticipated.

EXISTING DATA

Existing data has been gathered to identify baseline conditions and plan field surveys. The information is primarily drawn from, but not limited to, the following sources:  Atlas des amphibiens et des reptiles du Québec (AARQ);  Ducks Unlimited Canada (DUC);  Centre de données sur le patrimoine naturel du Québec (CDPNQ);  Centre d’expertise hydrique du Québec (CEHQ);  Committee on the Status of Endangered Wildlife in Canada (COSEWIC);  Commission de protection du territoire agricole du Québec (CPTAQ);  Environment and Climate Change of Canada (ECCC);  Institut de recherche et de développement en agroenvironnement (IRDA);  Institut de la statistique du Québec (ISQ);  Ministère de la Culture et des Communications (MCC);  Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec (MAPAQ);  Ministère de la Santé et des Services sociaux (MSS);  Ministère de l’Énergie et des Ressources naturelles (MERN);  Ministère de l’Environnement et de la Lutte contre les changements climatiques (MELCC);  Ministère des Affaires municipales et de l'Habitation (MAMH);  Ministère des Forêts, de la Faune et des Parcs (MFFP);  Ministère des Transports du Québec (MTQ);  Municipalities and MRCs;  Regroupement QuébecOiseaux;  Health Canada; and  Statistics Canada.

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DETAILED FIELD SURVEYS AT BROMONT CS

The objectives of the field surveys carried out at the Bromont CS site were to characterize the environmental conditions. More specifically, the surveys delineated forest stands and wetlands, characterized the vegetation cover, searched for species of interest, located watercourses, characterized and surveyed fish communities found in some watercourses, and identified wildlife and wildlife habitat within a 22.08 ha survey area. These surveys were carried out in May and June 2019. Appendix B presents the detailed results of these surveys.

FIELD RECONNAISSANCE FOR THE SABREVOIS ASSET PURCHASE

In order to present an updated description of land use, a walk-through of the permanent ROW of the pipeline segments included in the asset purchase was conducted during the months of September and October 2018. The observations were grouped into 13 different land uses (e.g., cultivation, meadow, pasture, early successional vegetation) to assess the current state of the permanent ROW. Also, watercourses present in the permanent ROW were confirmed. Finally, a summary table was prepared to document the results of the reconnaissance survey (Table 4-15).

FIELD RECONNAISSANCE FOR THE SAINT-BASILE INTERCONNECT

The objectives of the field reconnaissance carried out at the Saint-Basile Interconnect were to characterize the environmental conditions. More specifically, the field reconnaissance confirmed the absence of forest stands and wetlands, characterised the vegetation cover, searched for species of interest, located and characterized watercourses, identified wildlife and wildlife habitat, and characterized the type of crop and its homogeneity within the 2.69 ha survey area. This field reconnaissance was carried out on June 28, 2019.

SPATIAL BOUNDARIES

. Bromont CS

The spatial boundaries used to describe the baseline conditions for the Bromont CS were established based on the direct and indirect areas of influence of the Project component and include the following:  Project Development Area (PDA) which comprises the new CS footprint, the buffer zone, the TWS needed during construction as well as the access road to the station. The PDA is approximately 8.31 ha.  Local Assessment Area (LAA) – encompasses the area of influence of effects that are felt locally beyond the PDA. For all VCs, the LAA corresponds to a 1.5 km-radius centred on the PDA.  Regional Assessment Area (RAA) – encompasses the regional area of influence where effects are generally felt regionally beyond the LAA. For socio-economic VCs the RAA corresponds to the MRC Brome-Missisquoi. For the atmospheric environment the RAA considered is the province of Québec. The RAA is also considered for the cumulative effects assessment.

. Sabrevois Asset Purchase

The Sabrevois Asset Purchase involves the acquisition and continued operation of a portion of the Énergir mainline, seven laterals within existing ROWs and related facilities. No physical works are proposed by TQM as part of the Sabrevois Asset Purchase. Consequently, the spatial boundaries for the purposes of this ESA are limited to the existing permanent ROW and facility sites.

. Saint-Basile Interconnect

The spatial boundaries used to describe the baseline conditions for the Saint-Basile Interconnect were established based on the direct and indirect areas of influence of the Project component and include the following:

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 PDA which comprises the new Interconnect footprint inside the TQM ROW (0.012 ha) as well as the 0.12 ha of TWS needed during construction. The PDA is about 1.04 ha, and is common to both the Saint-Basile Interconnect and Énergir’s proposed Saint-Basile Delivery Station project (a provincially regulated project).  LAA encompasses the area of influence of effects that are felt locally beyond the PDA. For all VCs, the LAA corresponds to a 1.5 km-radius centred on the PDA.  RAA encompasses the regional area of influence where effects are generally felt regionally beyond the LAA. For socio-economic VCs the RAA corresponds to the MRC de la Vallée-du-Richelieu. For the atmospheric environment the RAA considered is the province of Québec. The RAA is also considered for the cumulative effects assessment.

BIOPHYSICAL ENVIRONMENT

PHYSICAL AND METEOROLOGICAL ENVIRONMENT

Physical Environment

The three Project components are located in the St. Lawrence Lowlands natural region, which is characterized by uniform and fairly flat terrain with an altitude generally less than 100 m Above Sea Level (ASL), sedimentary Paleozoic bedrock with some faulting (i.e., sandstone and limestone), and marine surface deposits primarily composed of clay, silt and sand left by the Champlain Sea. (NEB, 1998; Ministère du Développement durable, de l’Environnement et de la Lutte contre les changements climatiques (MDDELCC), 2017; MERN, 2017). The St. Lawrence Lowlands are bordered by the Appalachian region to the east. Although the Bromont CS is located in the St. Lawrence Lowlands, it sits on the fringe of the Appalachian region where the topography gradually becomes undulating. Although earthquakes can and do occur throughout most of eastern Canada, the level of historical seismic activity is low in the Montérégie region. The Project components lie to the east of the Western Québec seismic zone, a vast territory that encloses the Ottawa Valley from Montreal to Temiscaming, as well as the Laurentians and Eastern Ontario. The urban areas of Montreal, Ottawa-Hull and Cornwall are located in this zone (NRC, 2016). There are no potential landslide areas within the PDAs of the three Project components and no flood zones are identified in the MRC’s land-use and development plans (MRC de la Vallée-du-Richelieu, 2007; MRC de la Haute Yamaska, 2014; MRC Brome-Missisquoi, 2018). The Project is not anticipated to affect the morphology of unique physical features or other natural hazards. Therefore, additional detailed information regarding the physical environment is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

Meteorological Environment

The three Project components are located in Montérégie. The Montérégie climate is moderate and humid, with a long growing season. Mean annual temperatures range between 4.7 °C and 6.6 °C, whereas they are below 5 °C almost everywhere else in the province. The annual rainfall can vary between 800 and 1,360 mm, which is fairly representative of southern Québec. The growing season extends from 180 to 209 days, conditions found almost exclusively in southwestern Québec (Gérardin and McKenney, 2001). Average temperature, precipitation and wind data from ECCC were gathered to describe climatic conditions applicable to all three components of the Project. The available dataset covers the period 1981-2010. Out of the 168 meteorological stations currently in operation in the province of Québec, four are considered in the Climate Analysis (Table 4-1) due to their spatial location and availability of measurements.

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Table 4-1 Meteorological Stations Considered in the Climate Analysis

ID Station Name Latitude Longitude ASL Elevation (m) 7026734 Sabrevois 45°13'00,000" N 73°12'00,000" W 38.1 7022320 Farnham 45°18'00,000" N 72°54'00,000" W 68.0 7022800 Granby 45°23'00,000" N 72°43'00,000" W 175.0 7027517 Sainte-Madeleine 45°37'00,000" N 73°08'00,000" W 30.0 7027320 Montréal/Saint-Hubert A* 45°31'00.000" N 73°25'00.000" W 27.4 Note: Montreal/Saint-Hubert A* Considered for wind parameters only (unavailable for the other stations) Source: ECCC, 2018a

Monthly average, minimum and maximum daily temperatures compiled between 1981 and 2010 for the Sabrevois, Farnham, Granby and Sainte-Madeleine meteorological stations are shown in Table 4-2. In the RAA of all three Project components, the warmest monthly temperatures are typically observed in July while the coolest temperatures are recorded in January. Temperatures below freezing are typically observed from December to March. Table 4-2 Monthly Average, Min. and Max. Daily Temperatures in °C at the Sabrevois, Farnham, Granby and Sainte-Madeleine Meteorological Stations Temp. Year Station Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. °C Avg1 Avg. -9.7 -7.5 -1.7 6.6 13.4 18.4 20.6 19.6 15.4 8.3 2.4 -5.4 6.7 Sabrevois Min. -14.6 -12.5 -6.3 1.3 7.6 12.9 14.9 13.9 9.7 3.5 -1.3 -9.7 1.6 Max. -4.9 -2.6 2.9 11.8 19.2 23.9 26.2 25.2 21.0 13.0 6.2 -1.2 11.7 Avg. -10.0 -8.3 -2.3 6.3 13.0 18.2 20.5 19.4 15.0 8.3 2.2 -5.5 6.4 Farnham Min. -15.1 -13.6 -7.4 1.1 7.1 12.5 14.8 13.7 9.3 3.4 -1.8 -9.9 1.2 Max. -4.9 -3.0 2.7 11.6 18.9 23.8 26.1 25.0 20.6 13.1 6.2 -1.1 11.6 Avg. -9.8 -7.8 -2.2 6.0 12.8 17.8 20.2 19.2 14.8 8.1 1.8 -5.7 6.3 Granby Min. -14.2 -12.2 -6.5 1.1 7.6 12.7 15.3 14.3 10.0 3.9 -1.9 -9.5 1.7 Max. -5.3 -3.3 2.2 10.9 18.0 22.9 25.2 24.1 19.6 12.2 5.4 -1.8 10.8 Avg. -10.2 -8.7 -2.6 6.1 13.4 18.6 20.6 19.5 15.1 8.2 2.0 -6.0 6.3 Sainte- Min. -15.1 -13.9 -7.4 0.9 7.4 12.9 15.0 13.9 9.5 3.5 -2.0 -10.2 1.2 Madeleine Max. -5.2 -3.5 2.3 11.3 19.4 24.3 26.1 25.1 20.6 12.9 5.9 -1.7 11.5 Note : 1Average Source: ECCC, 2018a. Monthly rain and snow precipitations compiled between 1981 and 2010 for the Sabrevois, Farnham, Granby and Sainte-Madeleine meteorological stations are shown in Table 4-3. According to the data, February is the month with the least precipitations, rain and snow combined. The rainiest months are from June through September. Yearly rain precipitations in the RAA of all three Project components average 907.40 mm, while snowfalls average 214.07 cm yearly with the snowiest months typically recorded in December and January (Government of Québec, 2012).

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Table 4-3 Rain and Snow Precipitations at the Sabrevois, Farnham, Granby and Sainte-Madeleine Meteorological Stations

Station Precipitation Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual Rain (mm) 22.2 18.1 30.3 68.3 87.8 99.0 112.9 100.8 92.6 96.1 77.7 40.6 846.2

Sabrevois Snow (cm) 40.8 35.8 28.8 11.3 0.0 0.0 0.0 0.0 0.0 0.9 14.3 38.6 170.4 Precipitation 63.0 53.9 59.1 79.3 87.8 99.0 112.9 100.8 92.6 97.0 91.9 79.3 1,016.5 (mm) Rain (mm) 27.4 21.3 38.5 81.8 92.2 103.1 119.8 110.1 96.2 107.7 89.1 44.7 931.7

Farnham Snow (cm) 50.4 43.0 31.0 9.1 0.0 0.0 0.0 0.0 0.0 1.1 14.9 51.1 200.5 Precipitation 77.7 64.3 69.5 90.7 92.2 103.1 119.8 110.1 96.2 108.8 103.9 95.8 1,132.0 (mm) Rain (mm) 32.4 21.7 39.4 73.2 96.2 115.6 118.1 122.8 104.7 99.1 79.4 41.6 944.3

Granby Snow (cm) 65.0 51.5 47.4 16.9 0.9 0.0 0.0 0.0 0.0 3.4 25.5 60.7 271.3 Precipitation 97.4 73.1 86.9 89.9 97.1 115.6 118.1 122.8 104.7 102.5 104.8 102.4 1,215.4 (mm) Rain (mm) 28.0 18.5 36.9 76.3 85.6 97.1 102.5 98.7 87.2 102.6 85.3 38.7 857.4 Sainte- Snow (cm) 43.0 34.0 29.2 12.0 0.0 0.0 0.0 0.0 0.0 1.2 15.8 45.8 181.0 Madeleine Precipitation 71.0 52.5 67.8 87.8 85.6 97.1 102.5 98.7 87.2 103.8 101.2 84.5 1,039.7 (mm) Source: ECCC, 2018a.

Monthly average wind speed and direction compiled between 1981 and 2010 for the Montréal/Saint-Hubert A meteorological station are shown in Table 4-4. Wind speed measurements are only available for this station in the vicinity of the Project considered for the Climate Analysis. Wind speed is generally stable across time and most frequently from the west. Table 4-4 Monthly Average Wind Speed in km/h and Most Frequent Wind Direction at Montréal-Saint-Hubert Meteorological Station

Station Parameters Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Annual Montreal/ Speed (km/h) 16.9 16.1 16.4 16.5 15.1 14.1 12.8 11.9 13.1 14.7 15.9 15.9 15.0 Saint- Most Frequent W W W N S SW SW SW S W W W W Hubert A Direction Source: ECCC, 2018a.

Potential effects associated with extreme weather events are discussed in the context of Effects of the Environment on the Project (Section 6.3).

SOIL AND SOIL PRODUCTIVITY

. Bromont CS

The dominant soils within the PDA are sandy loam and gravely loam soil series (MAPAQ, 1998-2006). The agricultural capability within the PDA is described as having moderate to extreme limitations (classes 2, 3, 5 and 7) due to soils that hold low fertility, minor cumulative effects, stony soils as well as an overabundance of water (ARDA, 2013). Located within the CPTAQ designated agricultural zone, a portion of the PDA is cultivated. A review of existing information contained in the MELCC and the Treasury Board of Canada Secretariat (2018) contaminated soils databases have not revealed the presence of any known contaminated sites within the PDA or the LAA, the closest known contaminated site is at 2.4 km southeast of the PDA (MELCC, 2017).

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. Sabrevois Asset Purchase

The soils along the Sabrevois Asset Purchase vary from clay loam series in the western part to loam and sandy loam moving east along the asset with patches of organic soils in the Farnham area. The overall agricultural capability is moderate (class 2) to severe limitations (class 4) for soils (ARDA, 2013). All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding the soil and soil productivity is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

The dominant soil within the PDA is composed of the silty clay soil series (MAPAQ, 1998-2006). The agricultural capability within the PDA is classified as having moderate limitations (class 2) due to an overabundance of water (ARDA, 2013). Located within the CPTAQ designated agricultural zone, a portion of the PDA is cultivated. The review of existing information contained in the MELCC (2017) and the Treasury Board of Canada Secretariat (2018) contaminated soils databases have not revealed the presence of any known contaminated sites within the PDA, the closest known contaminated site being at approximately 1.5 km southwest of the PDA.

WATER QUALITY AND QUANTITY

4.3.3.1 Surface Water Quality and Quantity

. Bromont CS

This Project component is located within the Yamaska River watershed. Covering a land area of 478,400 ha, this watershed receives the water of three tributaries: the Noire, Yamaska Nord and Yamaska Sud-Est rivers. Water quality of the Yamaska River is considered to be poor (Organisme de bassin versant de la Yamaska, 2012). The intensive agricultural activity across the watershed is the major source of contaminants in the watercourses (MDDEP, 2008). There is no watercourse located within the PDA, but a permanent watercourse (Beaudry Brook) is located within 30 m of the PDA. This watercourse flows toward the Guay Brook approximately 441 m downstream which then drains into the Noir Brook and then to the Yamaska River. Refer to Table 4-5 in Section 4.3.4 and Figure 3 for additional information. Three drainage ditches cross through the PDA, two across the access road and one in the south section of the Bromont CS footprint. (Figure 5). The drainage ditches going across the access road flow toward the Noir Brook at about 191m and 194 m form the PDA which then drains into the Yamaska River. The other drainage ditch flows toward one of the two drainage ditches stated above.

. Sabrevois Asset Purchase

The Sabrevois Asset Purchase is crossed by 59 watercourses; 19 of which are considered permanent. Larger-sized streams are found along the Sabrevois/Shefford pipeline, namely the Yamaska and the Yamaska Sud-Est rivers. The Granby lateral crosses the Yamaska-Nord River (Figure 7). All assets included in the Sabrevois Asset Purchase are in place and operating and no physical works are needed. Therefore, additional detailed information regarding surface water quality and quantity is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

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. Saint-Basile Interconnect

This Project component is located within the Richelieu River watershed and about 1.5 km from the Richelieu River (Figure 8). The overall water quality of the Richelieu River is considered satisfactory. Municipal and industrial discharges and agricultural activities across the watershed are the main sources of contaminants in the watercourses (Comité de concertation et de valorisation du bassin de la rivière Richelieu (COVABAR), 2015). There are no watercourses within the PDA, but one intermittent watercourse is found within 30 m of the PDA (Info-sols, 2019; MRC de la Vallée-du-Richelieu, 2019). The unnamed intermittent watercourse flows into the Bernard Ouest Brook at about 1.5 km downstream, which drains into the Richelieu. Refer to Table 4-6 in Section 4.3.4 and Figure 8 for additional information.

One existing drainage ditch is located within the PDA going through the middle of lot No. 3 076 120 (Figure 9). It flows toward the south into the previously stated unnamed watercourse.

4.3.3.2 Groundwater Quality and Quantity

. Bromont CS

According to the MRC Brome-Missisquoi land-use planning and development plan, there is one groundwater well intended for commercial use that provides water to more than 20 people in the LAA. This well is used by Camping Vélo Bromont and is located at approximately 879 m from the PDA (MRC Brome-Missiquoi, 2018). There is currently no known use of groundwater in the PDA. According to the MELCC database (Système d'informations hydrogéologique (SIH) Data) 39 wells are found within a 1.5 km radius of the PDA. There are 3 commercial wells, 29 private wells and 7 wells of unknown type (MELCC, 2015). A survey was carried through in order to identify more precisely the location of the wells archived near the PDA. No wells were identified within the PDA, the nearest well is located about 21 m from the PDA west of the proposed access road.

. Sabrevois Asset Purchase

No groundwater wells were located within the ROW during the reconnaissance survey. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding groundwater quality and quantity is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

There are no groundwater wells in the Saint-Basile Interconnect PDA. According to the SIH Data, there is one groundwater well within the LAA. This well of unknown type is located at about 1.3 km from the PDA (MELCC, 2015).

FISH AND FISH HABITAT

. Bromont CS

A request was made to the CDPNQ regarding data on the fish SOMC occurrences within 5 km of the Bromont CS. Based on this existing historical data (CDPNQ, 2019a) no known fish SOMC are identified within the Beaudry Brook. There are 76 fish species present in the Yamaska River and its three main tributaries (MFFP, 2018a). Based on the number of fish species collected by the MFFP it can be inferred that there is a spawning potential for these rivers. Fish and fish habitat field surveys were carried out on June 3, 2019. Surveys aimed at characterizing fish communities and fish habitats, including species of interest to commercial, recreational or aboriginal fisheries as well as SOMC.

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Aquatic habitats were characterized in the central, upstream, and downstream sections of each survey station. Spawning potential was also assessed during the field survey. Three watercourses were characterized (Figure 5): an unnamed watercourse, the Desroches Brook and the Beaudry Brook. The Beaudry Brook is the only watercourse within 30 m the PDA. For further details on the fish and fish habitat survey of the unnamed watercourse and Desroches Brook, please refer to the Ecological Characterization Report attached in Appendix B. Four fish species were observed within the Beaudry Brook: Brook stickleback (Culaea inconstans); Fantail darter (Etheostoma flabellare); Eastern blacknose dace (Rhinichthys atratulus); and Creek chub (Semotilus atromaculatus). These species are not at risk and are commonly observed in small watercourses and streams. According to the physical characteristics of the fish-bearing watercourse a moderate spawning potential was established. No sensitive habitats were observed in the watercourse downstream of the PDA. Table 4-5 summarizes the main biophysical characteristics of the Beaudry Brook.

Table 4-5 Biophysical Characteristics of Watercourses within 30 m of the Bromont CS PDA Location Regarding Width at Species Watercourse Watercourse Species the Project High-Water Documented SOMC Name1 Type2 Surveyed Component Mark (m) historically Beaudry In LAA, ≈10 m Small Fantail darter, Brook stickleback, Creek 2.3 None None Brook from the PDA Permanent chub, Eastern blacknose dace Notes: 1 Name of the watercourse is based on the Base de données topographiques du Québec (MERN, 2007-2017). 2 A watercourse classified as small permanent flows continuously throughout the year (may freeze in winter) and has a width of 5 m or less at high-water mark. An intermittent watercourse would usually dry out in the summer.

. Sabrevois Asset Purchase

The Sabrevois Asset Purchase is crossed by 59 watercourses; 19 of which are considered permanent. Larger-sized streams are found along the Sabrevois/Shefford pipeline, namely both Yamaska and Yamaska Sud-Est rivers. The Granby lateral crosses the Yamaska-Nord River. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding fish and fish habitat is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

A request was made to the CDPNQ regarding data on the fish SOMC occurrences within 5 km of the Saint-Basile Interconnect. Based on this existing historical data (CDPNQ, 2019b) no known fish SOMC are located within the unnamed watercourse located within 30 m of the PDA. However, there are 96 fish species present in the Richelieu River (MFFP, 2018a). Based on the number of fish species collected by the MFFP it can be inferred that there is a spawning potential in the Richelieu River. A field reconnaissance was carried out on June 28, 2019. One unnamed watercourse was characterized (Figure 9). The unnamed watercourse is located within 30 m of the PDA. The biophysical characteristics of the unnamed watercourse were surveyed and are presented in Table 4-6. No fish survey was carried out due to low water levels.

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Table 4-6 Biophysical Characteristics of Watercourses within 30 m of the Saint-Basile Interconnect PDA Location Regarding Width at Watercourse Name1 Watercourse Type2 the Project Component High-Water Mark (m) Unnamed watercourse In LAA, 15 m of the PDA Small intermittent 2.3 Notes: 1 Name of the watercourse is based on the Base de données topographiques du Québec (MERN, 2007-2017). 2 A watercourse classified as small permanent flows continuously throughout the year (may freeze in winter) and has a width of 5 m or less at high-water mark. An intermittent watercourse would usually dry out in the summer.

VEGETATION

. Bromont CS

The Bromont CS is found in the Coteaux de l’Estrie ecoregion which is characterized by deciduous forests mainly composed of maple stands and tolerant hardwoods such as American beech (Fagus grandifolia), white ash (Fraxinus americana) and yellow birch (Betula alleghaniensis) (Gosselin, 2007). The topography of the ecoregion is varied, ranging from generally even terrain within the St. Lawrence plain to hilly terrain in the Appalachian region. Based on existing historical data from the MFFP (2017) and MELCC (2019a), there are no known rare forest, forest sanctuary, old growth forest, maple stand or protected area within the PDA (Figure 4). However, two known old-growth forest, one Canadian hemlock (Tsuga canadensis) stand and one sugar bush, are located within 30 m of the PDA. During the months of May and June 2019, field surveys were carried out in order to characterize the vegetation cover within the 22.08 ha survey area. During the site visit, the Canadian hemlock stand was confirmed as an old-growth forest and is considered of high market value. This stand is directly adjacent to the PDA. As for the sugar bush located approximately 5 m from the PDA, it is more of a young uneven aged stand presenting a short-term maple syrup potential of 60 notches per hectare and a medium-term potential of 65 notches per hectare (Figure 5). This is not sufficient to justify its use for maple syrup production. No rare forest or forest sanctuary was observed in the survey area. No merchantable timber was observed in the PDA. The salvaged timber will be offered to the former landowner, disposed of, or donated. Non-merchantable vegetation will be disposed of by mechanical means (e.g., mulching). There will be no burning of vegetation. The PDA is composed of 5.07 ha of native vegetation cover which represents 61% of its total area. The remaining area is occupied by cultivated land, bare ground, mown field and a gravel path. Three invasive species were identified within the PDA, namely the Alder buckthorn (Frangula alnus), the Reed canary grass (Phalaris arundinacea), and the Common reed (Phragmites australis). Their presence is marginal compared to the total number of species observed (see Appendix B). A summary of the main types of native vegetation cover within the limits of the PDA is presented in the Table 4-7. No native vegetation is located within the proposed access road footprint.

Table 4-7 Native Vegetation Cover within the Bromont CS PDA Type of Vegetation Compressor Station Buffer Zone (ha) TWS (ha) PDA (ha) Cover Footprint (ha) Woodland 1.91 0.89 1.21 3.19 Wetland 0.78 0.70 0.02 1.48 Early Successional 0.15 0.23 0.24 0.41 Vegetation Other 0.45 0.00 0.99 3.23 Total 3.29 1.81 2.46 8.31

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A request was made to the CDPNQ regarding data on the floristic SOMC occurrences within 5 km of the Bromont CS. Based on this existing historical data CDPNQ (2019c) and the ECCC (2019a) data, there is a potential presence of nine vegetation SOMC within 5 km of the PDA (Appendix B). Two vegetation species with federal conservation status, the American ginseng (Panax quinquefolius) and the Butternut tree (Juglans cinerea), are possibly present in a 5 km radius of the PDA. The American ginseng and the Butternut tree are both presently listed as federally endangered and protected under SARA and COSEWIC. The ECCC identified an American ginseng critical habitat at 2 km from the center of the PDA. No vegetation species with federal conservation status were observed during the May and June 2019 field surveys. Field surveys identified two species listed as vulnerable to harvest under Québec’s LEMV within the survey area, namely the Two-leaved toothwort (Cardamine diphylla) and the Ostrich fern (Matteuccia struthiopteris), however, they are not present within the PDA. More information is provided in Appendix B.

. Sabrevois Asset Purchase

The Sabrevois Asset Purchase is found in the Coteaux de l’Estrie ecoregion which is characterized by deciduous forests mainly composed of maple stands and tolerant hardwoods such as American beech, white ash and yellow birch (Gosselin, 2007). The topography of this ecoregion is varied, ranging from generally level within the St. Lawrence plain to hilly terrain in the Appalachian region. The most common land uses encountered by the Sabrevois assets are: field crops for about 30.6 km (41%); early successional vegetation for about 14.2 km (19%); hay and pasture for about 13.8 km (18.5%); and early successional vegetation with wetlands for about 10.1 km (13.4%). These land uses represent 92% of the Sabrevois Asset Purchase. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding vegetation is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

This Project component is also found in the Coteaux de l’Estrie ecoregion which is characterized by deciduous forests mainly composed of maple stands and tolerant hardwoods such as American beech, white ash and yellow birch (Gosselin, 2007). The topography is varied, ranging from generally even terrain within the St. Lawrence plain to hilly terrain in the Appalachian region. Based on existing historical data from the MFFP (2017) and MELCC (2019a), there are no known forest stands or protected area within the PDA. On June 28, 2019, a field reconnaissance was carried out in order to characterize the vegetation cover within the 2.69 ha survey area (Figure 9). During the site visit, six invasive species were identified within the survey area, namely the Common reed (Phragmites australis), Common valerian (Valeriana officinalis), Reed canary grass (Phalaris arundinacea), Smooth brome (Bromus inermis), Wild chervil (Anthriscus sylvestris) and Wild parsnip (Pastinaca sativa). The land is mostly covered by an early successional vegetation with embankment that are infested at 95% with invasive plants (Common reed). The unnamed watercourse and the drainage ditch going along the road named Rang des Trente are covered with invasive plants (Common reed). A heterogeneous presence of Common reed due to infestation by the watercourse and the drainage ditch vegetation was observed on the site. The vegetation covering the drainage ditch passing through the PDA was composed of two species of cattail, namely the broad-leaved cattail (Typha latifolia) and the narrow-leaved cattail (Typha angustifolia). The area in which the Saint-Basile Interconnect will be implemented is previously disturbed cultivated land and was mowed in the recent past. The PDA is composed of 0.36 ha of native vegetation cover which represents 34.6 % of its total area. The remaining area is occupied by invasive species, cultivated land, and a graveled land. A summary of the main types of vegetation cover within the limits of the PDA is presented in the Table 4-8.

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Table 4-8 Summary of Vegetation Cover in the Saint-Basile Interconnect PDA Component TWS (ha) Interconnect Footprint (ha) PDA (ha) Early Successional Up to 0.12 0.003 0.36 Vegetation Common Reed Up to 0.12 0.000 0.19 Other Up to 0.12 0.009 0.68 Total 0.12 0.012 1.04

A request was made to the CDPNQ regarding data on the floristic SOMC occurrences within 5 km of the Saint Basile Interconnect. Based on this existing historical data from the CDPNQ (2019d) and the data from ECCC (2019b), a potential presence of 19 SOMC within 5 km of the PDA. Three vegetation species with federal conservation status, the American ginseng (Panax quinquefolius), the Butternut tree (Juglans cinerea) and the Broad beech fern (Phegopteris hexagonoptera), are potentially present in a 5 km radius of the PDA. The American ginseng and the Butternut tree are presently listed as federally endangered and the Broad beech fern is listed as special concern. All three species are protected under SARA and COSEWIC. The ECCC identified an American ginseng critical habitat at 3.5 km from the center of the PDA. No vegetation species with federal or provincial conservation status were observed during the June 2019 field reconnaissance. No plant SOMC are known to occur in the PDA, and none was observed during the field reconnaissance.

WETLANDS

. Bromont CS

Based on the existing data, there are 82.77 ha of wetland areas across the LAA (DUC, 2013). Field surveys were conducted in May and June 2019 to identify the presence of wetlands within the 22.08 ha survey area (see Figure 5). A total of 13 wetlands were identified within the survey area namely seven treed swamps (MH-1, MH-5, MH-6, MH-7, MH- 8, MH-9 and MH-11), three shrubby swamps (MH-2, MH-12 and MH-13), two ponds (MH-3 and MH-4) and one marsh (MH-10). Table 4-9 presents the area of surveyed wetlands that are present within the PDA and its surrounding 30 m. No wetlands are located within the proposed access road footprint.

Table 4-9 Wetland Areas within the PDA and its Surrounding 30 m Area within Area within Area of Area within the Area within Type of the CS the Buffer Area within 30 m PDA and its the PDA Wetland Footprint Zone the TWS (ha) Surrounding Surrounding 30 (ha) (ha) (ha) the PDA (ha) m (ha) Treed swamp 0.14 0.26 0.00 0.40 0.18 0.58 (MH-1) Shrubby swamp 0.00 0.02 0.02 0.02 0.00 0.02 (MH-2) Pond 0.05 0.00 0.00 0.05 0.00 0.05 (MH-3 et MH-4) Treed swamp 0.00 0.00 0.00 0.00 0.22 0.22 (MH-5) Treed swamp 0.59 0.42 0.00 1.01 0.25 1.27 (MH-6) Treed swamp 0.00 0.00 0.00 0.00 0.01 0.01 (MH-7) Treed swamp 0.00 0.00 0.00 0.00 0.02 0.02 (MH-8) Total 0.77 0.70 0.02 1.48 0.68 2.15

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. Sabrevois Asset Purchase

Early successional vegetation and wetlands represent approximately 13.5% (10.1 km) of the total length of the Sabrevois Asset Purchase including laterals. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding wetlands is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

Based on the existing data, there are 1.9 ha of wetlands within the LAA (DUC, 2013). No wetlands are known to overlap with the PDA or are within 30 m of the PDA. The field reconnaissance confirmed the absence of wetlands within 30 m of the PDA. Therefore, additional detailed information regarding wetlands is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

WILDLIFE AND WILDLIFE HABITAT

The most common wildlife species found in the Montérégie are White-tailed deer (Odocoileus virginianus) and the Wild turkey (Meleagris gallopavo). Moose (Alces alces) and Black bears (Ursus americanus) are present in the area but are considered marginal in the region (AFM, 2017). There are no Important Bird Areas (IBA) (IBA Canada, 2018) or provincially protected areas (MELCC, 2019a) across the LAAs. The region’s mild winters and agroforestry characteristics offer favourable conditions for the establishment of an abundant population of White-tailed deer. A White-tailed deer wintering yard is located within the LAA of the Bromont CS (AFM, 2017). The Montérégie region, including the Monteregian Hills which consist of a series of small hills formed from intrusive igneous rocks, contains diverse wildlife habitats. This region also hosts small game including Ruffed grouse (Bonasa umbellus), Cottontail rabbit (Sylvilagus sp.), Snowshoe hare (Lepus americanus), Gray partridge (Perdix perdix), Woodcock (Scolopax sp.), and furbearer species, the most common being the Muskrat (Ondatra zibethicus). A total of 70 designated Muskrat habitats have been identified in Montérégie (AFM, 2017). None are found in the Project PDAs or LAAs. Montérégie birdlife is particularly rich offering habitat to about 300 bird species, including nearly 175 breeding bird species. Birds of prey are particularly well represented in Montérégie where these species benefit from the presence of large waterbodies during their migrations or from special habitats (SOS-POP, 2018). A request was made to the CDPNQ and the ECCC regarding data on the wildlife SOMC occurrences and critical habitats within 5 km of the Bromont CS and the Saint-Basile Interconnect components and a 500 m radius along the Sabrevois Asset Purchase. The provincial and federal wildlife SOMC identified within a 5 km radius of the PDAs are listed in Tables 4-10 and 4-11 for the Bromont CS and the Saint-Basile Interconnect Project components respectively. The potential presence of SOMC within the PDA has been determined based on the data from the CDPNQ and ECCC, the preferential habitats of the SOMC and the field survey results.

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Table 4-10 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Bromont CS Potential Federal Status Presence in the Species Latin Name Provincial Status COSEWIC Preferential Habitat Presence (SARA) LAA within the PDA Amphibians & Reptiles Common Snapping Chelydra Slow moving water with a soft mud bottom -- Special concern Special concern -- No turtle2 serpentina and dense aquatic vegetation3 Four-toed Hemidactylium Likely to be threatened Peatlands and swamps with presence of -- Not at risk Yes Yes salamander1 scutatum or vulnerable sphagnum moss4 Northern dusky Desmognathus Likely to be threatened Intermittent and small watercourses in -- Not at risk Yes Yes salamander1 fuscus or vulnerable mostly forested areas4 Northern ringneck Diadophis Likely to be threatened Deciduous and mixed forests/Rocky -- Candidate No Yes snake1 punctatus or vulnerable hills/Watercourse’s surrounding habitats4 Northern spring Gyrinophilus Cool, well-oxygenated, low-order, perennial Vulnerable Threatened Special concern No No salamander1-2 porphyriticus mountain streams5 Clear, meandering rivers and streams with Glyptemys sandy or gravely-sandy bottoms with Wood turtle1-2 Vulnerable Threatened Threatened Yes No insculpta moderate current and frequent oxbows/Surrounding terrestrial habitats6 Birds Cardellina Likely to be threatened Wet, mixed deciduous-coniferous forest, Canada warbler2 Threatened Threatened -- Yes canadensis or vulnerable well-developed shrub layer7 Likely to be threatened Hollow trees, cave walls and artificial Chimney swift 1-2 Caetura pelagica Threatened Threatened No No or vulnerable structures (chimneys, barns and wells)8 Likely to be threatened Common Nighthawk2 Chordeiles minor Threatened Special concern Open habitats/ Mixed and coniferous forests9 -- No or vulnerable Eastern wood- Mature and intermediate-age deciduous and Contopus virens -- Special concern Special concern -- Yes pewee2 mixed forests with an open understory10 Large areas of grassland/Tall dense grass Ammodramus Henslow’s sparrow2 -- Endangered Endangered cover/Thick thatch layer/ Lack of emergent -- No henslowii woody vegetation/ Low-lying wet areas11 Marshes and shrubby swamps within the boundaries of the high-water mark/Emergent Least bittern2 Ixobrychus exilis Vulnerable Threatened Threatened Yes No herbaceous and/or woody vegetation interspersed with areas of open water12 Steppes and tree-lined, bushy or hedged Loggerhead shrike1 Lanius ludovicianus Threatened -- Endangered No No pastures13

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Table 4-10 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Bromont CS Potential Federal Status Presence in the Species Latin Name Provincial Status COSEWIC Preferential Habitat Presence (SARA) LAA within the PDA Cliffs or buildings for nesting and open Peregrine falcon1-2 Falco peregrinus Vulnerable Special concern Not at risk landscapes for foraging/ large rivers or lakes No No nearby14 Red-headed Melanerpes Open deciduous forest/ Old growth forests Threatened Threatened Endangered No No woodpecker1 erythrocephalus (main species are oak and beech)15 SOURCES : 1CDPNQ, 2019a 2ECCC, 2019a 3COSEWIC, 2008a 4Desroches and Rodrigues, 2004 5COSEWIC, 2011a 6COSEWIC, 2007a 7COSEWIC, 2008b. 8COSEWIC, 2007b 9COSEWIC, 2018b 10COSEWIC, 2012a 11COSEWIC, 2011b 12COSEWIC, 2009 13COSEWIC, 2014 14COSEWIC, 2007c 15COSEWIC, 2007d.

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Table 4-11 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Saint-Basile Interconnect Potential Provincial Federal Status Presence in Species Latin Name COSEWIC Preferential Habitat Presence Status (SARA) the LAA within PDA Amphibians & Reptiles Common snapping Slow moving water with a soft mud bottom and dense Chelydra serpentina -- Special concern Special concern -- No turtle2 aquatic vegetation 3 Rivers, lakes, streams and creeks that are well- Graptemys Northern map turtle1-2 Vulnerable Special concern Special concern oxygenated / Basking sites adjacent to deep water and No No geographica provide and unobstructed view4 Likely to be Northern ringneck Deciduous and mixed forests/Rocky hills/Watercourse’s Diadophis punctatus threatened or -- Candidate No No snake1 surrounding habitats5 vulnerable Rivers, marshy creeks, bayous, oxbows, lakes, Spiny softshell turtle1-2 Apalone spinifera Threatened Threatened Threatened impoundments with soft bottom, sparse aquatic No No vegetation and sandbars or mudflats6

Western Chorus frog1-2 Pseudacris triseriata Vulnerable Threatened Threatened Early successional vegetation, bushes and forests7 No No

Wood turtle1 Glyptemys insculpta Vulnerable Threatened Threatened Rivers and surrounding terrestrial habitats8 No No

Birds A wide variety of natural and anthropogenic (herein referred to as artificial) habitats, including: lake and Bank swallow2 Riparia riparia -- Threatened Threatened ocean bluffs; stream and river banks; sand and gravel -- No pits; road cuts; and piles of sand, topsoil, sawdust, coal ash, and other materials9 Cerulean warbler1-2 Setophaga cerulea Threatened Endangered Endangered Mature deciduous forests10 No No Likely to be Hollow trees, cave walls and artificial structures Chimney swift1-2 Chaetura pelagica threatened or Threatened Threatened No No (chimneys, barns and wells)11 vulnerable Mature and intermediate-age deciduous and mixed Eastern wood-pewee2 Contopus virens -- Special concern Special concern -- No forests with an open understory12 Marshes and shrubby swamps within the boundaries of the high-water mark/Emergent herbaceous and/or Least bittern1-2 Ixobrychus exilis Vulnerable Threatened Threatened Yes No woody vegetation interspersed with areas of open water13 Likely to be Grasslands, arctic tundra, taiga, bogs, marshes, old Short-eared owl2 Asio flammeus threatened or Special concern Special concern -- No pastures and sand-sage14 vulnerable

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Table 4-11 Occurrences for Wildlife SOMC within a 5 km radius of the PDA for the Saint-Basile Interconnect Potential Provincial Federal Status Presence in Species Latin Name COSEWIC Preferential Habitat Presence Status (SARA) the LAA within PDA Moist, deciduous hardwood or mixed stands, often Wood thrush2 Hylocichla mustelina -- Threatened Threatened previously disturbed/Dense deciduous undergrowth/Tall -- No trees15 Mammals Likely to be Coniferous and mixed forest, Urban areas, near Eastern red bat1 Lasiurus borealis threatened or -- -- No No clearings, water points or rivers16 vulnerable Likely to be Coniferous and deciduous forest, near water bodies or Hoary bat1 Lasiurus cinereus threatened or -- -- No No clearings16 vulnerable Likely to be Lasionycteris Silver-haired bat1 threatened or -- -- Forest along lakes, pounds or water courses16 No No noctivagans vulnerable SOURCES : 1CDPNQ, 2019b 2ECCC, 2019b 3COSEWIC, 2008a 4COSEWIC, 2012b 5Desroches and Rodrigues, 2004 6COSEWIC, 2016 7COSEWIC, 2008c 8COSEWIC, 2007a 9COSEWIC, 2013 10COSEWIC, 2010 11COSEWIC, 2007b 12COSEWIC, 2012a 13COSEWIC, 2009 14COSEWIC, 2008d 15COSEWIC, 2012c 16Prescott and Richard, 1982

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. Bromont CS

Based on existing historical data from the CDPNQ (2019a), ECCC (2019a), MELCC (2019a) and AARQ (2018), there are no known occurrences in the PDA for any of the SOMC listed in Table 4-10. Wildlife SOMC identified as having potential to occur in the PDA are listed in Table 4-10. Critical habitats of the Golden-winged warbler (Vermivora chrysoptera) and the Wood turtle (Glyptemys insculpta) have been designated within 5 km radius of the PDA by the ECCC. The critical habitats for the Golden-winged warbler and the Wood turtle are located at approximately 3.2 km and 132 m from the PDA respectively. No occurrences of the Golden-winged warbler are recorded by the ECCC and the CDPNQ within the 5 km radius of the PDA. According to the data from CDPNQ, the Wood turtle, the Four-toed salamander (Hemidactylium scutatum) and the Northern dusky salamander (Desmognathus fuscus) have occurred within the LAA. The habitats present within the PDA do not correspond to the Wood turtle’s preferential habitat. The forest stands, the wetlands and the watercourses found within the PDA and the LAA may provide suitable habitats for certain amphibians, reptiles or birds SOMCs. Preferential habitats of the Canada warbler (Setophaga cerulean), Eastern wood-pewee (Contopus virens), Four-toed salamander; Northern dusky salamander, and Northern ringneck snake (Diadophis punctatus) are likely to be present near or within the PDA. A targeted survey was performed within the preferential habitats of these species. The Canada warbler’s preferential habitat includes wet, mixed deciduous-coniferous forest with a well-developed shrub layer. This type of habitat is present in the PDA. This species is recognized provincially as likely to be threatened or vulnerable, and is federally listed as threatened and protected under SARA and COSEWIC. This species was not found during the field survey. The Eastern wood pewee’s preferential habitat includes mature and intermediate-aged deciduous and mixed forests with an open understory. This type of habitat is present in the PDA. This species is federally listed as special concern and protected under SARA and COSEWIC, but does not have a provincial status. This species was not found during the field survey. The Four-toed salamander’s preferential habitat includes swamps with presence of sphagnum. This type of habitat is present within the PDA. This species has a likely to be threatened or vulnerable provincial status, but is not recognized as a SOMC by the federal government. During field surveys, the Four-toed salamander was found within the PDA and at two other locations within the survey area. The environments that correspond to its preferential habitat have been recorded across the property, see Appendix B for further details. The Northern dusky salamander’s preferential habitat includes forested intermittent and small watercourses. This type of habitat is present within 30 m of the PDA. This species is recognized provincially as likely to be threatened or vulnerable, but is not recognized as a SOMC by the federal government. This species was not found during the field survey. The Northern ringneck snake’s preferential habitat includes deciduous stands, mixed forests and watercourses surrounding habitats. Such habitats are present within the PDA. This species is recognized provincially as likely to be threatened or vulnerable provincial status, but is not recognized as a SOMC by the federal government. This species was not found during the field survey. During the field survey, incidental observations of the following non SOMC bird and mammal species were made: Wild turkey (Meleagris gallopavo); Hairy woodpecker (Picoides villosus); Black-capped chickadee (Poecile atricapillus); Snowshoe hare (Lepus americanus); White-tailed deer (Odocoileus virginianus); and Red squirrel (Sciurus vulgaris).

. Sabrevois Asset Purchase

All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding wildlife and wildlife habitat is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

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. Saint-Basile Interconnect

Based on existing historical data from the CDPNQ (2019b), ECCC (2019b), MELCC (2019a) and AARQ (2018), there are no known occurrences for any of the SOMC listed in 4-11 in the PDA. Wildlife SOMC identified as having potential to occur in the PDA are listed in 4-11. Critical habitats of the Spiny softshell turtle (Apalone spinifera) and the Western chorus frog (Pseudacris triseriata) have been designated within 5 km radius of the PDA by the ECCC. The critical habitats for the Spiny softshell turtle and the Western chorus frog are located at 1.5 km and 3.4 km from the PDA respectively. According to the data from CDPNQ, the Least bittern (Ixobrychus exilis) has occurred within the LAA (Figure 9). The habitats present within the PDA does not correspond to the Least bittern’s preferential habitat. During the field reconnaissance, no wildlife SOMC observation was made. One non SOMC bird species, the Red-winged blackbird (Agelaius phoeniceus), was observed and one nest was found within the PDA. The Saint-Basile Interconnect is located in a designated agricultural area. The land is cultivated and disturbed annually so it has limited potential for wildlife habitat. Therefore, additional detailed information regarding wildlife and wildlife habitat is not warranted as per Table A- 1 of the NEB Filing Manual (NEB, 2017).

SPECIES AT RISK OR SPECIES OF SPECIAL STATUS

SAR or species of special status and their related habitats are considered under the Vegetation, Fish and Fish Habitat, and Wildlife and Wildlife Habitat elements.

AIR AND GREENHOUSE GAS EMISSIONS

The Air Quality Index (AQI) is calculated by the MELCC and takes into account hourly concentrations of ozone (O3), fine particulate matter (PM2.5), sulfur dioxide (SO2), nitrogen dioxide (NO2) and carbon monoxide (CO). According to the value of the AQI, three categories of air quality are distinguished (MELCC, 2018):  Air quality is "poor" when the AQI is greater than 51.  Air quality is "’fair" when the AQI is between 26-50.  Air quality is "good" when the AQI is less or equal to 25. On a regional scale, a poor air quality day occurs when AQI is deemed "poor" (greater than 51) at one station, for a minimum of one hour. The number of "poor" air quality days in the AQI regions which intercepts the RAA ("Estrie" and "Vallée-du-Richelieu") are shown in Table 4-12. The AQI Region of "Rive-Sud de Montréal" is used in the analysis as a comparative due to its closer location to the urban areas of the Greater Montreal.

Table 4-12 Number of Days of Poor Air Quality (AQI) Number of Days AQI Region 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Estrie 16 25 7 11 4 3 7 2 1 2 2 0 0 0 Vallée-du-Richelieu 48 45 21 18 10 12 9 12 9 8 4 8 2 5 Rive-Sud de Montréal 21 48 15 15 11 26 21 20 26 23 14 11 5 10 Source: MELCC, 2019b Compared to the AQI Region of ‘‘Rive-Sud de Montréal’’ the two AQI which intercept the RAA have fewer numbers of "poor" air quality days. Overtime, the air quality is generally good since the RAA is primarily located in agricultural lands characterized with limited emission sources of air contaminants and low levels of pollutants. Main sources of air pollutants in rural environment are typically limited to vehicle traffic, agricultural activities (which is an important source of fine particulate matter), and residential wood burning. Smog Days occur when atmospherics emissions and meteorological conditions are suitable to induce high concentrations of fine particulate matter or ozone, which build up over time and space. They are characterized by their

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intensity, Duration and Extent. Accordingly, the MELCC consider a record of a Smog Day, when the average fine particulate matter concentrations are greater than 35 micrograms per cubic metre (µg/m3), or when the ozone concentration is greater than 82 parts per billion (ppb). Additionally, these high concentrations must be representative for the entire administrative region and observed over a minimum of 3 hours (MELCC, 2018). The number of Smog Days in the Montérégie and Montréal administrative regions, where the three Project components are located, are shown in Table 4-13.

Table 4-13 Number of Smog Days due to Fine Particulate Matter and Ozone Administrative Number of Days Region 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Montérégie 16 28 7 7 5 11 8 8 14 7 7 7 1 3 Montreal 24 34 11 15 30 35 26 21 19 13 9 5 8 7 Source: MELCC, 2018 There will be no burning to support Project activities. The nearest residence is located about 497 m south and 30 m north of the Bromont CS footprint and Saint-Basile Interconnect, respectively. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed.

ACOUSTIC ENVIRONMENT

. Bromont CS

WSP was commissioned by UDA on behalf of TQM to conduct a quantitative study of the Bromont CS acoustic environment. To support the study, ambient noise was measured at the three nearest measure points (M1 to M3) between June 6, 2019 and June 9, 2019 (WSP, 2019; in Appendix C). The results of the ambient noise survey are shown in Table 4-14.

Table 4-14 Ambient Noise Level

Leq,1h Day (dBA)1 Leq,1h Night (dBA)1 Measure points Minimum Maximum Minimum Maximum M1 49 58 49 60 M2 41 45 37 74 M3 40 45 32 45 Note: 1Noise level rounded at 1 dBA, ref. 2x10-5 Pa The Bromont CS will be located in a wooded area next to agricultural land and some 500 m from a campground and nearby the cycling path named Estriade. The nearest residence is located approximately 497 m south of the CS footprint. Main sources of noises registered are related to the traffic of the Highway 10 as well as nature (insects and birds).

. Sabrevois Asset Purchase

In general, the acoustic environment in the vicinity of the Sabrevois Asset Purchase is characterized by a mix of natural sounds and sounds from human activities, such as rail traffic, overhead aircraft, commercial and agricultural activities, residential life, and local vehicular traffic. All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding the acoustic environment is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

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. Saint-Basile Interconnect

The Saint-Basile Interconnect will be located near Route 116, a busy divided 4-lane Blvd. Ambient noise in the vicinity of the Project component is higher in the daytime on week days due to traffic, with higher volumes early morning and at the end of the work day. The nearest residence is located approximately 30 m north of the PDA. The Saint-Basile Interconnect will not result in an increase in noise emissions during operations aside from vehicle and equipment use during site-specific maintenance. Therefore, further detailed information is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

SOCIO-ECONOMIC ENVIRONMENT

HUMAN OCCUPANCY AND RESOURCE USE

. Bromont CS

This Project component is located in the City of Bromont which is part of the MRC Brome-Missisquoi in the Montérégie administrative region of the Province of Québec (Ministère des Affaires municipales et de l’Occupation du Territoire (MAMOT), 2017). It is located at the edge of the City of Bromont near the Granby and Canton de Shefford municipalities. The LAA is located in the MRCs Brome-Missisquoi and la Haute-Yamaska. The two predominant land uses in the LAA are agricultural lands (including forested areas) and residential areas. Approximately 16% of the population within the MRC Brome-Missisquoi lives in Bromont. Between 1986 and 2011, the city had a 20.9% population increase, the largest increase in the MRC (MRC Brome-Missisquoi, 2018). Bromont is now the second most populated city of the MRC (MRC Brome-Missisquoi, 2019). It was founded based on two lines of development: recreational tourism and high technology industry (Ville de Bromont, 2014a). It is a center of employment and research in the MRC (MRC Brome-Missisquoi, 2018). There are 86 residences in the LAA and the majority are located northwest of the PDA near the Estriade cycling path and northeast near Saxby S. Road. The closest residence from the PDA is owned by the current landowner at about 26 m west of the access road and 497 m south of the CS footprint. In Québec, since 1978, designated agricultural areas have been defined and protected by the CPTAQ under the LPTAA. The PDA is entirely located within the designated agricultural area, partly on cultivated land and partly on forested land. According to the Brome-Missisquoi and la Haute-Yamaska MRC’s land-use planning and development plans (MRC de la Haute-Yamaska, 2014; MRC Brome-Missisquoi, 2018), the LAA is mostly located within land zoned for agricultural and agroforestry activities, but also partly within land zoned for recreational tourism and urban planning activities. The Brome-Missisquoi and La Haute-Yamaska MRCs are hosts to an array of recreational activities. Ski Bromont is the principal touristic attraction in the RAA (MRC Brome-Missisquoi, 2018). A campground, Camping Vélo Bromont, is located in the LAA at approximately 500 m from the PDA. It is a campground of 72 sites available for rent in the summer, which welcomes all types of recreational vehicles as well as cyclists that use the adjacent Estriade cycling path (Camping Vélo Bromont, n.d.). A provincially protected White-tailed deer wintering yard is found in the LAA and no known federally protected areas are found in the LAA. During field surveys, some hunting blinds have been observed in the vicinity of the PDA. At least one seemed to be operational. Based on this information, a potential for hunting and trapping activities in the vicinity of the Bromont CS is present. The PDA is entirely located on private land. The land use in the PDA consists of: 3.19 ha of woodland (38.4%), 2.29 ha of cultivated land (27.6%), 1.48 ha of wetland (17.8 %), 0.44 ha of graveled land (5.3%), 0.41 ha of early successional vegetation (4.9%), 0.29 ha of bare ground (3.5%) and.0.22 ha of mown field (2.6%).There is no commercial timber harvesting, due to the absence of merchantable timber. The salvaged timber will be offered to the former landowner, disposed of, or donated. Any additional vegetation will be disposed of by mechanical means (e.g., mulching).

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. Sabrevois Asset Purchase

A summary of the results of the reconnaissance survey conducted by walking the pipeline segments to be acquired by TQM (Sabrevois Pipeline and laterals) is presented in Table 4-15, complete results are shown in Figure 7 of Appendix A. The Sabrevois Pipeline is mainly located in a designated agricultural area (58 km, 91.2%) as is the Granby lateral (3.8 km, 69.9%), while only 2.3 km (46.4%) of the Cowansville lateral is in designated agricultural area. The Farnham and Bromont laterals are both located entirely in non-designated agricultural areas. The Sabrevois Pipeline is mainly parallel to existing infrastructure (gas pipeline, power line, bicycle path, railway and public roads), for a total of some 48.5 km (64.7%). Note that Cowansville, Bromont and Granby laterals are also parallel to existing infrastructure for 91.4% (4.6 km), 100% (0.54 km) and 93.8% (5.2 km) respectively.

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Table 4-15 Summary of Reconnaissance Surveys for the Sabrevois Asset Purchase Lateral Lines (m) Main Component Sabrevois/ Pipeline (m) Total (m) Farnham Cowansville Bromont Granby Land use Field crops 29,543 -- 598 -- 484 30,625 Hay and pasture 11,123 -- 795 42 1,875 13,835 Early successional vegetation 10,466 158 1,456 476 1,705 14,261 Early successional vegetation with wetlands 7,537 102 1,559 23 856 10,077 Wooded private road 318 ------318 Residential land 1,242 -- 503 -- 466 2,211 Commercial land 201 ------24 225 Community, sports land and parks 705 ------705 Storage 353 ------353 Equestrian activity 68 ------68 Airport, skydiving 440 ------440 Major watercourse 60 ------26 86 Various infrastructure1 1,525 13 105 -- 65 1,708 TOTAL 63,581 273 5,016 541 5,501 74,912 Designated agricultural zone Designated agricultural zone 58,040 -- 2,327 -- 3,841 64,208 Watercourse Permanent 16 ------3 19 Intermittent 36 -- 3 -- 1 40 Adjacent to an existing infrastructure Pipeline 190 ------190 Power line 9,317 -- 1,935 -- 5,162 16,414 Bicycle path 2,199 ------2,199 Rail Road 18,457 -- 86 -- -- 18,543 Public roads 8,033 17 2,564 541 -- 11,155 TOTAL 38,196 17 4,585 541 5,162 48,501

1 Highways, roads, rail roads, bicycle paths

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. Saint-Basile Interconnect

The Saint-Basile Interconnect is located in the City of Saint-Basile-le-Grand in the MRC de la Vallée-du-Richelieu. The land north of Route 116 (Sir Wilfrid-Laurier Blvd) is in the designated agricultural area. The PDA is located on the north side of Route 116, east of Rang des Trente and the land is zoned for agricultural use (MRC de la Vallée-du-Richelieu, 2016). Land use in the PDA consists of: 0.48 ha of cultivated land (46.7%), 0.36 ha of early successional vegetation (34.3%), 0.19 ha of invasive species (18.2%) and 0.009 ha of graveled land (0.8%) (Figure 9). Just on the other side of the Rang des Trente, to the west of the Saint-Basile Interconnect site, are two small businesses: a greenhouse called ‘’Les serres Jean-François Dauphinais’’; and a farmers’ market. The nearest residential area is located 30 m north of the PDA. In addition to the Richelieu River where recreational boating is popular during the summer, there are two main areas in the LAA where summer and winter recreational activities are carried out: the Parc national du mont Saint-Bruno, about 5 km to the west and the mont Saint-Hilaire Nature Center, further east, offer a variety of outdoor activities such as hiking, bird watching, running and cross-country skiing. The CN railway also runs parallel to Route 116 on the south side of the road. The main land use in the LAA is agriculture.

HERITAGE RESOURCES

Project activities will include ground disturbance (e.g., vegetation clearing, grading, excavating) for the Bromont CS and Saint-Basile Interconnect. There are no known archaeological or heritage resources present in the Bromont CS PDA (MCC, 2019a) or the Saint-Basile Interconnect PDA (MCC, 2019b).

NAVIGATION AND NAVIGATION SAFETY

Project activities will not be located in, on, over, under, through or across a navigable waterway. Therefore, no further description is warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

TRADITIONAL LAND AND RESOURCE USE

The closest Aboriginal community for all three Project components is the Mohawk community at Kahnawake. This community is located southwest to all the components at approximately 74 km from the Bromont CS, 33 km from the Sabrevois Asset Purchase and 31 km from the Saint-Basile Interconnect. Although all components of the Project are located within the asserted traditional territories of the Mohawks, Algonquins, and Abenakis, all components are located entirely on privately held lands.

SOCIAL AND CULTURAL WELL-BEING

According to Statistics Canada’s 2016 Census (Statistics Canada, 2017), the City of Bromont is home to a population of 9,041 inhabitants, the majority (63.3%) is aged between 15 and 64 and the average age is 42.2 years old (Table 4-16). As well, this table shows that the City of Saint-Basile-le-Grand is home to a population of 17,059 inhabitants, the majority (66.8%) is aged between 15 and 64 and the average age is 37.9 years old. As presented in Table 4-16, the population of all the MRCs along the Sabrevois Asset Purchase are mainly aged between 15 and 64 years old (Statistics Canada, 2017). The main language spoken in the MRC du Haut-Richelieu, MRC Brome-Missisquoi, MRC de la Haute Yamaska and MRC de la Vallée-du-Richelieu is French (Statistics Canada, 2017).

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Table 4-16 Distribution of the Population by Municipalities, Cities or MRCs 0-14 15-64 65 years 85 years Average Municipalities, Cities and MRC Population years years and over and over Age (%) (%) (%) (%) MRC du Haut-Richelieu 117,443 16.7 65.0 18.3 2.0 41.9 Sainte-Anne-de-Sabrevois 2,039 16.7 67.6 15.4 1.2 40.8 Saint-Alexandre 2,495 22.3 67.0 10.7 0.6 36.6 Sainte-Brigide-d’Iberville 1,402 19.9 66.5 13.2 0.4 38.1 MRC Brome-Missisquoi 58,314 15.5 61.7 22.8 2.5 44.9 Sainte-Sabine 1,085 20.3 66.8 12.4 0.5 38.7 Farnham 8,909 18.9 61.9 19.1 2.9 41.8 Brigham 2,306 16.7 66.2 17.1 0.4 42.6 Cowansville 13,646 15.1 62.5 22.4 3.0 44.2 Bromont 9,041 18.3 63.3 18.5 1.2 42.2 MRC de la Haute-Yamaska 88,306 16.6 63.5 19.9 2.3 43.0 Shefford 6,947 17.9 67.3 14.7 0.4 41.2 Granby 66,222 15.7 62.6 21.6 2.8 43.8 MRC de la Vallée-du-Richelieu 124,420 19.5 65.2 15.3 1.5 39.8 Saint-Basile-le-Grand 17,059 21.5 66.8 11.8 1.1 37.9 Source: Statistics Canada, 2017

HUMAN HEALTH AND AESTHETICS

The environmental elements associated with the Project that may be related to human health include: water quality and quality, air emissions, and acoustic environment. The baseline conditions for water quantity and quality, air emissions, and acoustic environment are provided in Sections 4.3.3, 4.3.10, and 4.3.11, respectively. Visual aesthetics are addressed below.

. Bromont CS

The CS and associated facilities are situated above ground. The construction of the CS and associated facilities could affect the viewsheds for landowners and land users in the vicinity of this Project component. In terms of visual aesthetics, the Bromont CS footprint is located within a mainly wooded area approximately 650 m north of the Bergeron East Road. This location limits observation angles.

. Sabrevois Asset Purchase

All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding human health is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile-Interconnect

The Interconnect will be situated above ground and will be implemented in the existent BV4. In terms of visual aesthetics, the Saint-Basile Interconnect is located in adjacent to existing TQM ROW in a viewshed previously altered by agricultural and gas activities.

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INFRASTRUCTURES AND SERVICES

. Bromont CS

The Bergeron East Road is the main road located just south of the PDA and to which is connected an existing small path leading to the CS site. This path will be upgraded to become the CS access road. The Bergeron East Road connects to Bromont Blvd, Saxby S. Road and Highway 10 (Eastern Township Hwy) at the roundabout of exit 78 to the east and to Pierre-Laporte Blvd to the west. No data is available for the annual average daily traffic for this route (Ministère des Transports, de la Mobilité durable et de l’électrification dans les transports (MTMDET), 2019). The Estriade bicycle path is located approximately 146 m northeast the PDA. This cycling path is part of an 82 km regional network that connects the cities of Granby, Bromont and Waterloo (Corporation d’aménagement récréotouristique de la Haute-Yamaska inc.(CARTHY), 2016a). The network offers a cultural experience by exhibiting sculptures from international artists along the paths in this open-air museum (CARTHY, 2016b). No sculpture is located within the LAA (Artria, 2019). In 2017, this network was travelled by approximately 205 000 individuals (Vélo Québec, 2017). The cycling path is also part of the Québec national cycling network (La Route Verte) which connects more than 15 regions of the province and larger cities such as Montréal and the city of Québec (Vélo Québec, 2018). A segment of this cycling path, namely the Estriade, connects Granby to Waterloo and consists of a 21 km paved cycling path (CARTHY, 2016a). The nearest service centers are in the city of Bromont located approximately 3 km south of the PDA. Bromont has diversified lodging and restaurants, as well as tourism and health services (Tourisme Bromont, n.d.). The nearest hospital is in Granby approximately 10 km from the PDA. It provides an array of medical services including an emergency room and is affiliated hospital to the Centre intégré universitaire de santé et des services sociaux de l’Estrie – Centre hospitalier universitaire de Sherbrooke (CIUSSS-CHUS) (Government of Québec, 2019). The city of Bromont has its own police department, which is responsible for the area covering the Project component. The nearest police station is located approximately 3 km form the PDA (Ville de Bromont, 2014b). Fire safety on the Bromont territory is ensured by the Bromont, Brigham and Saint-Alphonse-de-Granby Fire Department. The nearest fire station is located approximately 3 km from the PDA (Ville de Bromont, 2014c). As for electrical utility infrastructure, a 120 kV electricity power line runs parallel to the TQM pipeline, approximately 390 m south of the Bromont CS footprint. There is also a Hydro-Quebec substation, Cleveland substation, to which the line is connected on the north side of Bergeron East Road near the intersection with Pierre-Laporte Blvd (MRC de la Haute-Yamaska 2014). One of the six Brome-Missisquoi MRC’s transformer substation is also located near the Project component approximately 3 km to the south of the PDA (MRC Brome-Missisquoi, 2018).

. Sabrevois Asset Purchase

All assets included in the Sabrevois Asset Purchase are in place and operating. No physical works are needed. Therefore, additional detailed information regarding infrastructure and services is not warranted as per Table A-1 of the NEB Filing Manual (NEB, 2017).

. Saint-Basile Interconnect

The Saint-Basile Interconnect will be located near Route 116, a busy divided 4-lane Blvd. In 2017, the annual average daily traffic volume on this route was 24,000 vehicles (MTMDET, 2019). The summer average daily traffic is higher, reaching 25,900 vehicles, whereas the winter average daily traffic is 21,500 vehicles. Overall, 3% of the traffic is heavy-vehicle.

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The nearest services are in the City of Beloeil, located less than 5 km east of the proposed Saint-Basile Interconnect site. There are many lodging opportunities and restaurants, as well as government and health services, all within a 20 km radius. There are two hospitals (Pierre-Boucher and Charles-Lemoyne) less than 20 km from the Saint-Basile Interconnect site, both located in Longueuil. They provide an array of medical services including an emergency room. Charles-Lemoyne Hospital is affiliated with the CIUSSS-CHUS (Government of Québec, n.d.a; Government of Québec, n.d.b). The Régie intermunicipale de police Richelieu Saint-Laurent is the police department with jurisdiction in most towns of the MRC de la Vallée-du-Richelieu and covers the Saint-Basile Interconnect area. Fire safety is provided by the Saint-Basile-le-Grand Fire Department. The fire station is located approximately 10 km from the Saint-Basile Interconnect site.

EMPLOYMENT AND ECONOMY

Labour force and Income

According to Statistics Canada’s 2016 Census (Statistics Canada, 2017), the median total income in 2015 among recipients in MRC Brome-Missisquoi, was $31,873, while the average total income of the City of Bromont was of $41,705 (see Table 4-17). As well, this table shows that the average total income of the MRC de la Vallée-du-Richelieu, in 2015, was of $42,501, whereas the median total income of the City of Saint-Basile-le-Grand was of $45,667.

Labour Force by Industry Sector

The labour force of the MRC Brome-Missisquoi, based on the North American Industry Classification System (NAICS), works in three main industry sectors, namely manufacturing (17%), retail trade (12%) and health care and social assistance (11%) (Statistics Canada, 2017). A fair percentage (20%) of the labour force works in other industry sectors than those listed in Table 4-18. Bromont is the city that procures the most employment in industrial processing in the MRC with large industries that employ a high volume of people (MRC Brome-Missisquoi, 2018). The three main sectors of activity in the MRC de la Vallée-du-Richelieu are the same as those for the MRC Brome-Missisquoi as indicated in Table 4-18.

Education and skill levels

Within the MRC Brome-Missisquoi, 53% of the population aged 15 years and over has completed a post-secondary certificate, diploma or degree, while 22% has no certificate, diploma or degree. The portion of the population over 15 years of age that has attended university is 32% (Table 4-19, Statistics Canada, 2017). In the MRC de la Vallée-du-Richelieu, the portion of the population with a post-secondary certificate and the portion that has attended university is higher, at 65 and 35% respectively (Table 4-19).

Table 4-17 Median Total Income by Municipalities, Cities or MRCs

Municipalities, Cities and MRC Median Total Income in 2015 Among Recipients ($) MRC du Haut-Richelieu 33,816 Sainte-Anne-de-Sabrevois 32,832 Saint-Alexandre 34,889 Sainte-Brigide-d’Iberville 32,213 MRC Brome-Missisquoi 31,873 Sainte-Sabine 32,981 Farnham 30,455

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Table 4-17 Median Total Income by Municipalities, Cities or MRCs Municipalities, Cities and MRC Median Total Income in 2015 Among Recipients ($) Brigham 32,996 Cowansville 29,097 Bromont 41,705 MRC de la Haute-Yamaska 31,740 Shefford 39,075 Granby 31,095 MRC de la Vallée-du-Richelieu 42,501 Saint-Basile-le-Grand 45,667 Source: Statistics Canada, 2017

The distribution of the labour force population according to the NAICS sectors by territorial entities is presented in Table 4-18 whereas the distribution of level of education by territorial entities is presented in Table 4-19.

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Table 4-18 Distribution of the Labour Force Population Aged 15 years and over According to the NAICS* Sectors by Territorial Entities

Municipalities, Cities and MRCs 11 23 31-33 44-45 48-49 54 61 62 72 91 Others 1,620 4,700 8,510 8,140 3,240 3,125 3,675 7,680 3,795 4,095 12,730 MRC du Haut-Richelieu (2.6%) (7.7%) (13.9%) (13.3%) (5.3%) (5.1%) (6%) (12.5%) (6.2%) (6.6%) (20.8%) 80 130 120 130 55 25 60 145 60 35 260 Sainte-Anne-de-Sabrevois (7.3%) (11.8%) (11%) (11.8%) (5%) (2.3%) (5.5%) (13.2%) (5.5%) (3.2%) (23.6%) 165 155 230 150 70 45 95 155 50 45 250 Saint-Alexandre (11.7%) (11%) (16.3%) (10.6%) (4.9%) (3.2%) (6.7%) (11%) (3.5%) (3.2%) (17.7%) 160 40 155 80 20 25 30 115 40 20 130 Sainte-Brigide-d’Iberville (19.6%) (4.9%) (19%) (9.8%) (2.5%) (3.1%) (30.7%) (14%) (5%) (2.5%) (16%) 1,885 1,900 4,895 3,475 1,115 1,550 1,680 3,145 1,815 1,120 5,775 MRC Brome-Missisquoi (6.6%) (6.7%) (17.3%) (12.3%) (4%) (5.5%) (6%) (11%) (6.4%) (4%) (20.4%) 130 85 120 80 25 25 20 65 10 10 65 Sainte-Sabine (20.5%) (13.3%) (18.9%) (12.6%) (3.9%) (3.9%) (3.1%) (10.2%) (1.6%) (1.6%) (10.2%) 325 305 870 575 230 165 130 515 290 170 790 Farnham (7.4%) (7%) (20%) (13.1%) (5.3%) (3.8%) (3%) (11.7%) (6.6%) (3.9%) (18.1%) 30 75 270 175 60 35 95 155 45 40 235 Brigham (2.5%) (6.2%) (22.2%) (14.4%) (5%) (2.9%) (7.8%) (12.8%) (3.7%) (3.3%) (19.3%) 135 390 1,230 1,020 130 160 380 775 495 270 1,080 Cowansville (2.2%) (6.4%) (20.3%) (16.8%) (2.1%) (2.6%) (6.3%) (12.8%) (8.2%) (4.5%) (17.6%) 125 260 825 440 120 485 345 515 325 240 1,105 Bromont (2.6%) (5.4%) (17.2%) (9.2%) (2.5%) (10.1%) (7.2%) (10.8%) (6.8%) (5%) (23.1%) 1,205 2,600 10,110 5,620 1,280 1,980 2,715 5,260 2,860 1,260 9,020 MRC de la Haute-Yamaska (2.7%) (5.9%) (23%) (12.8%) (2.9%) (4.5%) (6.2%) (12%) (6.5%) (2.9%) (20.5%) 115 325 740 430 115 260 325 385 205 105 830 Shefford (3%) (8.5%) (19.3%) (11.2%) (3%) (6.8%) (8.5%) (10%) (5.3%) (2.7%) (21.6%) 500 1,695 7,485 4,370 875 1,420 2,045 4,115 2,130 900 6,570 Granby (1.6%) (5.3%) (23.3%) (13.6%) (2.7%) (4.4%) (6.4%) (12.8%) (6.6%) (2.8%) (20.5%) 1,070 5,210 7,285 8,545 2,720 5,520 5,705 7,825 3,115 4,145 17,935 MRC de la Vallée-du-Richelieu (1.5%) (7.5%) (10.5%) (12.4%) (3.4%) (8%) (8.3%) (11.3%) (4.5%) (6%) (26%) 65 690 840 1,165 405 800 890 1,115 435 600 2,760 Saint-Basile-le-Grand (0.7%) (7.1%) (8.6%) (12%) (4.1%) (8.2%) (9.1%) (11.4%) (4.5%) (6.1%) (28.3%) Notes : NAICS* Code : 11 Agriculture, forestry, fishing and hunting 23 Construction 31-33 Manufacturing 44-45 Retail trade 48-49 Transportation and warehousing 54 Professional, scientific and technical services 61 Educational services 62 Health care and social assistance 72 Accommodation and food services 91 Public administration Source: Statistics Canada, 2017

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Table 4-19 Level of Education for the Population Aged 15 years and over by Territorial Entities University Certificate, No Certificate, Secondary (high) Post-secondary Apprenticeship or College, CEGEP or University Certificate Municipalities, Diploma or Degree at Diploma or Achool Diploma Certificate, Diploma Trades Certificate Other Non-University or Diploma Below Total Cities and MRCs Bachelor Level or Degree or Equivalency or Degree or Diploma Certificate or Diploma Bachelor Level Above 21,155 22,890 51,085 19,505 16,645 2,900 12,030 95,125 MRC du Haut-Richelieu (22.2%) (24%) (53.7%) (38.2%) (32.6%) (5.7%) (23.5%) (100%) 475 415 800 410 250 40 100 1,690 Sainte-Anne-de-Sabrevois (28.1%) (24.6%) (47.3%) (51.2%) (31.3%) (5%) (12.5%) (100%) 495 425 1,010 470 295 75 165 1,935 Saint-Alexandre (25.6%) (21.2%) (52.2%) (46.5%) (29.2%) (7.4%) (16.3%) (100%) 205 280 630 295 230 20 85 1,120 Sainte-Brigide-d’Iberville (18.3%) (25%) (56.3%) (46.8%) (36.5%) (3.2%) (13.5%) (100%) 10,365 11,990 25,200 7,980 7,425 1,770 8,030 47,550 MRC Brome-Missisquoi (21.8%) (25.2%) (53%) (31.7%) (29.5%) (7%) (31.9%) (100%) 195 215 425 195 150 20 65 835 Sainte-Sabine (23.4%) (25.7%) (50.9%) (45.9%) (35.3%) (4.7%) (15.3%) (100%) 2,280 1,670 3,095 1,515 955 175 450 7,050 Farnham (32.3%) (23.7%) (43.9%) (48.9%) (30.9%) (5.7%) (14.5%) (100%) 365 540 1,015 370 355 65 220 1,920 Brigham (19%) (28%) (52.8%) (36.5%) (35%) (6.4%) (21.7%) (100%) 2,870 2,980 4,865 2,015 1,365 295 1,165 10,690 Cowansville (26.8%) (27.9%) (45.2%) (41.7%) (28.2%) (6.1%) (24.1%) (100%) 730 1,595 5,010 950 1,370 400 2,290 7,335 Bromont (10%) (21.7%) (68.3%) (19%) (27.3%) (8%) (45.7%) (100%) 17,695 18,195 35,300 13,430 11,205 2,130 8,535 71,190 MRC de la Haute-Yamaska (24.9%) (25.6%) (49.6%) (38%) (31.7%) (6%) (24.2%) (100%) 905 1,320 3,405 985 1,090 230 1,100 5,630 Shefford (16.1%) (23.4%) (60.5%) (29%) (32%) (6.8%) (32.3%) (100%) 13,440 13,895 26,270 9,670 8,485 1,615 6,505 53,610 Granby (25.1%) (25.9%) (49%) (36.8%) (32.3%) (6.1%) (24.8%) (100%) 13,845 20,985 63,185 16,220 20,280 4,480 22,205 98,020 MRC de la Vallée-du-Richelieu (14,1%) (21.4%) (64.5%) (25.7%) (32.1%) (7.1%) (35.1%) (100%) 1,655 2,630 8,915 2,120 2,815 700 3,275 13,195 Saint-Basile-le-Grand 12.5%) (20%) (67.6%) (23.8%) (31.6%) (7.9%) (36.7%) (100%) Source: Statistics Canada, 2017

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5 ASSESSMENT METHODOLOGY

APPROACH

The ESA is a process through which the direct and indirect environmental and socio-economic impacts potentially resulting from a proposed project are identified and assessed early in the planning process. The ESA represents a proactive, preventative approach to environmental management and protection. The ESA has been completed using methods that meet the requirements of the NEB Act. The ESA focuses on VCs that are of particular value or interest to regulators and communities and those that are likely to be directly or indirectly affected by the Project. Biophysical and socio-economic VCs are selected for assessment based on guidelines provided in Table A-1 of the NEB Filing Manual (NEB, 2017) and the assessment team’s professional judgment and experience. The potential Project-related effects were identified and assessed for each of the VCs. The effect assessment takes into account the mitigation measures that help to reduce or avoid the potential effect. The residual effects that remain after mitigation are characterized using criteria described in Section 5.6. The ESA methods address residual and cumulative effects and are based on the NEB Filing Manual. Residual effects are changes in the biophysical or socio-economic environment that are caused as a result of the development of the Project and that are present after mitigation measures are applied. Cumulative effects are changes in the biophysical or socio-economic environment that are likely to result from the Project in combination with other past, present, and reasonably foreseeable projects and activities (NEB, 2017).

VALUED COMPONENTS AND POTENTIAL EFFECTS

Tables A-2 and A-3 in the NEB Filing Manual (NEB, 2017) were used to guide the determination of the VC considered. The list of VCs was developed based on potential interaction between the Project components and the environment. For each VC, one or more potential Project-related effects were identified considering the potential interactions between the Project components and the environmental components. The VCs identified for the Project and the potential effects considered are listed in Table 5-1. Also, Table 5-2 lists the biophysical and socio-economic elements where no potential interaction was identified along with the appropriate rationale.

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Table 5-1 Valued Components Interaction with the Project and Potential Effects Considered

Valued Potential Effects Considered Components Bromont CS Sabrevois Asset Purchase Saint-Basile Interconnect Biophysical Environment  Change in soil capability during construction N/A – No physical works required  Change in soil capability during construction Soil and Soil Productivity  Change in soil quality during construction  Change in soil quality during construction  Soil contamination and discovery of historical soil contamination during construction  Soil contamination and discovery of historical contamination of soils during construction Water Quality and Quantity  Change in surface water quality during construction N/A – No physical works required  Change in surface water quality during construction (surface water) Fish and Fish Habitat  Alteration of riparian or instream habitat function during construction N/A – No physical works required  Alteration of riparian or instream habitat function during construction  Change in native vegetation communities N/A – No physical works required  Change in native vegetation communities Vegetation  Introduction or spread of invasive and non-native plant species during construction  Introduction or spread of invasive and non-native plant species during construction Wetlands  Loss or disturbance of wetlands N/A – No physical works required  N/A - No wetland within 30 m of the PDA  Change in habitat availability N/A – No physical works required  Change in habitat availability Wildlife and Wildlife Habitat  Change in habitat connectivity and wildlife movement  Change in habitat connectivity and wildlife movement  Change in mortality risk during construction  Change in mortality risk during construction Species at Risk or Species of  Refer to potential effects in the Sections on Vegetation, Fish and Fish Habitat, and Wildlife and Wildlife Habitat. N/A – No physical works required  Refer to potential effects in the Sections on Vegetation, Fish and Fish Habitat, and Wildlife and Wildlife Habitat. Special Status  Change to ambient air quality during construction N/A – No physical works required  Change to ambient air quality during construction  Release of GHGs during construction  Release of GHGs during construction Air and GHG Emissions  Change to ambient air quality during operation  Release of GHGs during operation  Temporary increase in local noise levels during construction N/A – No physical works required  Temporary increase in local noise levels during construction Acoustic Environment  Increase in local noise levels during operation Socio-Economic Environment  Temporary disruption of agricultural activities during construction N/A – No physical works required  Temporary disruption of agricultural activities during construction Human Occupancy and  Loss of agricultural lands Resource Use  Disruption of recreational activities during construction Social and cultural Well-being  Disruption of surrounding community and landowner during construction N/A – No physical works required  Disruption of surrounding community and landowner during construction Human Health and  Alteration of viewsheds N/A – No physical works required  Refer to the Water Quality and Quantity, Acoustic Environment and Air and GHG Emissions elements. Aesthetics  Refer to the Water Quality and Quantity, Acoustic Environment and Air and GHG Emissions elements.  Increase in demands for accommodations and other community services during construction N/A – No physical works required  Increase in demands for accommodations and other community services during construction Infrastructure and Services  Increase in traffic volumes during construction  Increase in traffic volumes during construction Employment and Economy  Increase in employment and economy during construction N/A – No physical works required  Increase employment and economy during construction

Table 5-2 Valued Components Interaction with the Project and Potential Effects Not Considered Elements Rationale Biophysical Environment Physical and Meteorological environment  The Project is not expected to interact with physical environment (general topography, ground instability and wind or water erosion), because it is not located within areas of instable terrain, erosion-prone land or permafrost. Water Quality and Quantity (groundwater)  The Project is not expected to interact with groundwater, because no wells are located within the PDAs. Socio-Economic Environment Heritage Resources  No known archaeological or heritage resources are identified or expected to be present in the local environment.  The Project will not affect the Heritage Resources. Navigation and Navigation Safety  The Project will not affect Navigation and Navigation Safety (no navigable waterways in the area of the Project). Traditional Land and Resource Use  The Project is located 31 km from nearest Aboriginal community.  Interaction with Traditional Land and Resource Use is not anticipated since all PDAs for new construction are located on private lands, while the existing Sabrevois Assets cross limited municipal and provincial lands.

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SPATIAL BOUNDARIES

The spatial boundaries considered for the potential, residual and cumulative effects were established to take into account the direct and indirect areas of influence of the Project and include:  PDAs encompass the area of Project activities which comprise: o Construction of the Bromont CS which comprises the new CS footprint, the buffer zone, the TWS needed during construction as well as the access road to the station. Total area required for this component is approximately 8.31 ha. o Existing permanent ROW for the ongoing operation of the Sabrevois Asset Purchase (about 20 m wide and 64 km long as well as seven laterals totalling 11 km in length). o Construction of the Saint-Basile Interconnect which comprises the new Interconnect footprint inside the TQM ROW (0.012 ha) as well as the 0.12 ha of TWS needed during construction. The PDA is about 1.04 ha, and is common to both the Saint-Basile Interconnect and Énergir’s proposed Saint-Basile Delivery Station project (a provincially regulated project).  LAAs encompasses the area of influence of effects that are felt locally beyond the PDA. For all VCs, the LAA corresponds to a 1.5 km-radius centred on the PDAs.  RAAs encompasses the regional area of influence where effects are generally felt regionally beyond the LAA. For socio-economic VCs the RAA corresponds to the MRC Brome-Missisquoi (for the Bromont CS) and MRC de la Vallée-du-Richelieu (for the Saint-Basile Interconnect). For the atmospheric environment the RAA considered is the province of Québec. The RAA is also considered for the cumulative effects assessment.

TEMPORAL BOUNDARIES

The temporal boundaries take into account the different stages of implementation and Project timeframe. They are defined based on the timing and duration of Project effects with respect to each VC. The temporal boundaries established for the purposes of this ESA are the duration of construction (approximately 18 months for the Bromont CS component and about 4-5 weeks for the Saint-Basile Interconnect component) and the period of time over which the residual effects extend. Temporal boundaries are described in Table 5-3.

MITIGATION MEASURES

To mitigate the potential effects anticipated during the construction and operation of the Project, mitigation measures specific to each VC will be implemented. These are based on corporate TC Energy standards, industry practices, the Project’s team of experts and its consultants’ professional experience, as well as on lessons learned from similar projects in Québec and in the rest of Canada. Overall, the proposed mitigation measures focus on complying with the applicable regulations, using construction methods adapted to local biophysical conditions and that will minimize the effects on the environment, using equipment suited to the work and in good condition, complying with time-sensitive activities for wildlife, and using control measures to limit the geographical extent of the effects on water, air and soil. Mitigation measures to be implemented during construction are provided in the Project Specific EPP (Appendix E).

CHARACTERIZATION OF RESIDUAL EFFECTS AND DETERMINATION OF SIGNIFICANCE

The characterization of residual effects was carried out based on the characteristics of the potential interaction between the Project components and the VC after implementation of the mitigation measures that will reduce or even prevent the anticipated effects, using the criteria shown in Table 5-3.

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Table 5-3 Residual Effects Characterization Criteria Criteria Description Importance Direction Direction refers to the expected  Positive: The effect results in a positive change in the VC. trend of the anticipated biophysical  Negative: The effect results in a negative change or deterioration in the VC. or socio-economic effects.  Neutral: The change is neither positive nor negative. Magnitude Magnitude refers to the amount of  Low: The effect on the quality, use, or integrity of the VC is barely change in a measurable parameter perceptible. or variable relative to baseline case.  Moderate: The effect increases or decreases the quality or use of the VC, without compromising its integrity.  High: The predicted effect threatens the integrity of the VC or brings about a substantial, irreversible change in the VC or the way that it is used. Geographic Geographic Extent refers to the  PDA: The effect affects a very limited area within the project footprint, or is Extent geographic area within which an only felt by a few people in the study area. effect of a defined magnitude is  LAA: The effect affects a relatively small area adjacent to, or at a short expected to occur. distance from the PDA, or is only felt by some of the people living in the study area.  RAA: The effect affects a large area extending a considerable distance from the PDA, or is felt by all or most of the people living in the study area. Duration/ Duration refers to the period of time  Short-term / Reversible: The effect is felt over a limited period, generally Reversibility that is required until the VC returns corresponding to the time it takes to construct the project or start activities. to its baseline condition, or the  Medium-term / Reversible: Effect is continuously felt over a longer period, effect can no longer be measured but generally shorter than the project lifespan or the period during which or otherwise perceived. activities are carried out. Reversibility refers to the likelihood  Long-term / Reversible: Effect is continuously felt over the lifespan of the that a measurable parameter will project or the duration of activities. recover from an effect.  Permanent / Irreversible: The effect is felt long after the decommissioning of the project and the pre-construction condition cannot be reclaimed. Frequency Frequency refers to how often the  Single event: The effect is associated with one event. environmental effect occurs and the  Multiple irregular events: The effect can occur many times during project number of times during the Project construction or operation but the frequency cannot be determined. or a specific project phase that an  Multiple regular events: The effect can occur many times during project environmental effect might occur. construction or operation and its frequency can be determined.  Continuous event: The effect is felt throughout construction or operation of the project.

SIGNIFICANCE OF THE RESIDUAL EFFECTS ASSESSMENT

The significance of residual effects is determined based on the importance of effects. This involves, where practical, establishing and applying clearly defined threshold criteria beyond which a residual effect would be considered significant. A qualitative assessment was considered the most appropriate method to evaluate the significance of the potential effects given the limited scope of the Project. This qualitative assessment relied on available literature research and the professional judgment of the assessment team. In general, biophysical and socio-economic effects are considered significant when the direction, magnitude, geographic extent, duration, frequency or irreversibility cause a change in the VC that will alter its status or integrity beyond an acceptable level. The definition of residual effects significance is presented in Table 5-4.

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Table 5-4 Significance of the Residual Effect Significance Definition Biophysical The effect might be detectable, but is not predicted to result in a change that will alter the sustainability of the Not significant VC beyond an acceptable level. The effect is measurable, and is predicted to result in a change to the VC that will alter its sustainability Significant beyond an acceptable level. Socio-economic The effect is measurable at the individual, family, or community level, and strong enough to be detectable at Not significant the population level, but is not expected to result in substantial change in the well-being of defined populations and communities. The effect is clearly distinguishable and can result in strong interest or concern, or results in substantial Significant change in the well-being of defined populations and communities.

CUMULATIVE EFFECTS

The cumulative effects assessment evaluates likely residual effects associated with the Project in combination with other past, present, and reasonably foreseeable projects and activities. The assessment methodology for cumulative effects follows the approach and regulatory guidance outlined in the previous sections for assessing potential effects. To determine if the Project acts cumulatively with other projects and activities, the two following conditions must be met:  The Project has residual effects on the VC.  The Project residual effects act cumulatively with residual effects of other projects and activities within the defined spatial and temporal boundaries. Where the Project’s environmental effects act cumulatively with other physical activities a cumulative effects assessment is undertaken to determine whether they are significant. Significance of the Project’s contribution to potential cumulative effects was determined based on the same significance definitions as those used for the assessment of project-residual effects.

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6 EFFECTS ASSESSMENT

As mentioned in the Assessment Methodology (Section 5), a residual effects assessment was undertaken only for the VCs where there is an interaction with the Project. The following sections list the standard mitigation measures that will be implemented to minimize potential effects on particular VCs. The Project Specific EPP (Appendix E), contingency and management plans also contain standard construction methods and mitigation measures. The following assessment applies to both the Bromont CS and the Saint-Basile Interconnect. No VCs were carried through for the Sabrevois Asset Purchase considering that no physical activities are going to take place for this Project component. Énergir is scheduled to clear the PDA for construction as part of its Saint-Basile Delivery Station Project prior to the Saint- Basile Interconnect construction start date. The effect assessment is based on the land conditions at the time of application (i.e. not yet cleared). At the time of writing, the land use in the PDA consists of: 0.48 ha of cultivated land (46.7%), 0.36 ha of early successional vegetation (34.3%), 0.19 ha of invasive species (18.2%) and 0.009 ha of graveled land (0.8%). Within the PDA, TQM anticipates needing up to 0.12 ha for its TWS (TWS and temporary access). The exact location of the TWS within the PDA will be defined prior to construction.

BIOPHYSICAL ENVIRONMENT

SOIL AND SOIL PRODUCTIVITY

Generally defined as the capacity of soil to support plant growth (Karlen, 2005), soil productivity strongly affects ecosystem functions, environmental cycles and the ability of other organisms, including humans, to use and benefit from natural resources (Weis, 2013). Soil quality and productivity are essential for agricultural land use (Weis, 2013). This VC was carried through because construction activities may affect soil capability and quality and could result in physical soil disturbance. Construction activities have the potential to interact with soil and soil productivity through, for example, mixing of topsoil and subsoil, loss of topsoil, soil compaction, soil rutting, soil contamination as well as discovery of historical soil contamination. No potential effects on soils and soil productivity are anticipated during the operation phase of the Project. As provided in Table 5-1, potential effects associated with the construction of the Project on soil and soil productivity are:  Change in soil capability during construction.  Change in soil quality during construction.  Soil contamination and discovery of historical soil contamination during construction. These potential effects are applicable to the Bromont CS and the Saint-Basile Interconnect Project components. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6- 1 to 6-3. An evaluation of significance is not required for those effects where no residual effect is identified.

Change in Soil Capability

Construction activities may alter soil capability within the Bromont CS and the Saint-Basile Interconnect PDAs. No soil disturbance is anticipated for the Bromont CS buffer zone that is located outside TWS areas. Soil loss during construction activities can occur through two main mechanisms: erosion and inappropriate soil handling practices. The soil capability within the Bromont CS and the Saint-Basile Interconnect PDAs will be modified by the Project components’ activities in two ways:  Mixing of the topsoil and subsoil.  Loss of topsoil due to wind and water erosion.

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Table 6-1 Change in Soil Capability during Construction Project Phase Construction Operation Main Mitigation  Topsoil/strippings from areas of temporary disturbance will be stockpiled and reused for site reclamation. Measures  Topsoil/strippings from the area that will become the permanent footprint of the facility will be salvaged and conserved. The topsoil/strippings will be stockpiled in a designated location, in a manner that will not cause erosion or sedimentation.  Site grade plans will be designed to ensure construction footprint surface drainage is directed toward appropriate locations.  Any excess grade material not required to establish final site contours will either be stockpiled on or disposed of at a location approved by the Company. If stockpiled, the stockpile will be contoured to a stable profile to prevent erosion and allow vegetation management. The stockpile will be covered with topsoil/strippings of sufficient depth to support vegetation and then seeded, unless otherwise directed by the Company.  Ensure grade material does not spread off the construction footprint.  Following salvage of the topsoil/strippings, if warranted, stabilize topsoil/strippings windrows and stockpiles where the potential for erosion exists. Refer to the Soil Erosion Contingency Plan (EPP - Appendix 1E) for additional information.Soil handling practices should be followed as outlined in the EPP (EPP - Appendix E).  The level of clean-up on all lands will ensure equivalent land capability is maintained.  Replace topsoil/stripping to a uniform depth, on all portions of the construction footprint that were stripped. Match topsoil/stripping depth to the unstripped edges of the construction footprint.  Postpone replacement of topsoil/strippings during wet weather or high winds to prevent erosion and/or damage to the soil structure. Residual Effect Yes No Following Mitigation

There will be no residual effects regarding the change in soil capability following application of the above mitigation measures.

Change in Soil Quality

The use of TWS for both the Bromont CS and the Saint-Basile Interconnect during construction could have an effect on soil quality through compaction and rutting, due to the use of heavy equipment and machinery. Soil compaction and rutting affects soil structure and reduces the ability of soil to support plant growth. Several factors may increase compaction and rutting including climatic conditions, moisture content, spring thaw, the nature of the soils, and human activities. In addition, compaction increases water runoff, which can lead to increased water erosion and less available water and nutrients for plants.

Table 6-2 Change in Soil Quality during Construction Project Phase Construction Operation Main Mitigation  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to Measures safety and road closure regulations.  In the event of adverse weather that could result in rutting, sedimentation and erosion, and/or compaction, the Environmental Inspector(s) or designate(s), in consultation with the Construction Manager, may implement contingency measures as outlined in the Adverse Weather Contingency Plan (EPP - Appendix 1E). A soils specialist and/or the responsible regulatory agency may be consulted if warranted.  If wet/thawed soil conditions occur, implement the Wet Soils Contingency Plan (EPP - Appendix 1E). Residual Effect Yes No Following Mitigation

There will be no residual effects regarding the change in soil quality following application of the above mitigation measures.

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Contamination and Discovery of Historical Soil Contamination

This potential effect is applicable to the Bromont CS and the Saint-Basile Interconnect. Construction activities could have an effect on soil contamination due to the presence of heavy equipment and machinery that could lead to fuel or other contaminant leaks or spills. Construction activities could also lead to the discovery of historical soil contamination through the excavation activities. Table 6-3 Soil Contamination and Discovery of Historical Soil Contamination during Construction Project Phase Construction Operation Main Mitigation  In the event contaminated soils are encountered during construction, implement the Contaminated Soils Measures Contingency Plan (EPP – Appendix 1E) and the TC Energy Waste and Hazardous Materials Management Manual.  Appropriate release prevention and response, containment and recovery equipment will be maintained at all work sites, in accordance with the Chemical and Waste Management Plan (EPP - Appendix 1F).  The Contractor will ensure equipment is monitored regularly and free of fluid leaks.  Bulk fuel trucks, service vehicles, and pick-up trucks equipped with box-mounted fuel tanks shall carry release prevention, containment, and clean-up materials that are suitable for the volume of fuels or oils carried, in accordance with the Chemical and Waste Management Plan (EPP - Appendix 1F).  Release contingency material carried on bulk fuel and service vehicles, stationed near watercourses or waterbodies, or in environmental response units shall be suitable for use on land and water.  Do not allow fuel, oil, or hazardous material storage within 100 m of a watercourse or waterbody except where secondary containment is provided.  Conduct refuelling at least 100 m away from any watercourse or waterbody, when feasible.  Employ the following measures to reduce the risk of fuel releases in water: Where equipment refuelling is required within 100 m of a watercourse, ensure that: − all containers, hoses, nozzles are free of leaks; − all fuel nozzles are equipped with automatic shut-offs; and − always have operators stationed at both ends of the hose during fueling.  If an accidental release does occur, measures to control, contain, recover and clean up the release are to be implemented immediately to reduce the potential for adverse environmental and human health effects, or to ensure the release does not spread or increase in size. Refer to the Release Contingency Plan (EPP - Appendix 1E). Residual Effect Yes No Following Mitigation

There will be no residual effects regarding soil contamination and the discovery of historical soil contamination following application of the above mitigation measures.

WATER QUALITY AND QUANTITY

6.1.2.1 Surface Water Quality and Quantity

Surface water quality and quantity resources are an essential part of a wider natural ecosystem and are of critical importance to natural and human environments (McGill University, 2019). The distribution and occurrence of waterbodies not only affect ecosystem functions, but also environmental cycles and the ability of other organisms, including humans, to use and benefit from natural resources (McGill University, 2019). This VC was carried through because construction activities may contribute to soil erosion, increase sediment runoff within watercourses as well as surface water contamination. No potential effects on surface water quality and quantity are anticipated during the operation phase of the Project. As provided in Table 5-1, potential effect associated with the construction of the Project on surface water quantity and quality is the change in surface water quality. This potential effect is applicable to the Bromont CS and Saint-Basile Interconnect Project components. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-4. An evaluation of significance is not required for those effects where no residual effect is identified.

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Construction activities of both the Bromont CS and Saint-Basile Interconnect have the potential to alter surface water quality through erosion that could cause sedimentation of surface water. It is possible for some erosion to occur as a result of the use of heavy machinery, surface water runoff, and vegetation clearing. Although erosion and sedimentation may occur during construction, the mitigation measures are expected to reduce the magnitude of sedimentation on surface water. Construction activities of both the Bromont CS and Saint-Basile Interconnect also have the potential to alter surface water quality through potential equipment fuel or hydraulic leaks/spills. Due to mitigation measures in place to reduce the potential for spills reaching waterbodies and affecting surface water quality, the probability is low, the quantities are generally small, limited in extent and duration, and unlikely. Hydrostatic testing needed for the Bromont CS and the Saint-Basile Interconnect will be undertaken using water sourced in accordance with applicable permits, licenses, or access rights. Following hydrostatic testing, the water will be tested and disposed of appropriately. At the Bromont CS site, construction activities could have an effect on one small permanent watercourse (Beaudry Brook) that is located 10 m from the PDA. At the Saint-Basile Interconnect site, construction activities could have an effect on one small intermittent watercourse that might be located 15 m from the PDA. No watercourse crossings are planned as part of the Project.

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Table 6-4 Change in Surface Water Quality during Construction Project Phase Construction Operation Main Mitigation  Direct grading away from waterbodies. Do not place fill material in a waterbody during grading. Measures  Refrain from clearing within 10 m of a watercourse to protect riparian areas. This area will be clearly marked prior to clearing operations.  Where practical, leave stumps in place, particularly on streambanks, to provide surface stability.  Fell trees away from watercourses where feasible. Immediately remove trees, debris or soil inadvertently deposited below the high watermark of a watercourse.  If the working surface is unstable, do not permit clearing equipment within the 10 m riparian buffer unless approved by the Environmental Inspector(s) or designate(s). Following clearing, the 10 m riparian buffer will remain intact (i.e., consisting of low-lying understory vegetation).  Install erosion and sediment control at all watercourses and/or waterbodies as directed by the Environmental Inspector(s) or designate(s).  Where water erosion is evident, and there is potential for runoff from the construction footprint site to flow into a watercourse, refer to the Soil Erosion Contingency Plan (EPP – Appendix 1E).  Appropriate release prevention and response, containment and recovery equipment will be maintained at all work sites, in accordance with the Chemical and Waste Management Plan (EPP - Appendix 1F).  If an accidental release does occur, measures to control, contain, recover and clean up the release are to be implemented immediately to reduce the potential for adverse environmental and human health effects, or to ensure the release does not spread or increase in size. Refer to the Release Contingency Plan (EPP - Appendix 1E).  If machine clean-up cannot be completed prior to spring break-up, ensure cross drainage is re-established, and sedimentation and erosion controls are installed to protect the construction footprint and sensitive environmental features. Final clean-up and reclamation will generally occur during the following fall and/or winter, or as soon as conditions permit.  Following an adverse weather event, the Contractor will confirm the efficacy of sediment and erosion control measures and whether corrective action is required.  All equipment, including mats, must arrive at the Project site clean and free of soil or vegetative debris. Equipment will be inspected by the Environmental Inspector(s) or designate(s), or designate, and if deemed to be in appropriate condition will be approved for use and identified with a suitable marker or tag. Any equipment, including mats, which do not arrive in appropriate condition shall not be allowed on the construction footprint until it has been cleaned, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use.  The Contractor will collect all construction debris and other waste materials and dispose of at an approved facility and in accordance with the Chemical and Waste Management Plan (EPP – Appendix 1F) and the Release Contingency Plan (EPP - Appendix 1E) unless otherwise authorized by the Environmental Inspector(s) or designate(s).  The Contractor will ensure equipment is monitored regularly and free of fluid leaks.  Bulk fuel trucks, service vehicles, and pick-up trucks equipped with box-mounted fuel tanks shall carry release prevention, containment, and clean-up materials that are suitable for the volume of fuels or oils carried, in accordance with the Chemical and Waste Management Plan (EPP – Appendix 1F).  Release contingency material carried on bulk fuel and service vehicles, stationed near watercourses or waterbodies, or in environmental response units shall be suitable for use on land and water.  Do not allow fuel, oil, or hazardous material storage within 100 m of a watercourse or waterbody except where secondary containment is provided.  Conduct refuelling at least 100 m away from any watercourse or waterbody, when feasible.  Employ the following measures to reduce the risk of fuel release into water: Where equipment refuelling is required within 100 m of a watercourse or waterbody, ensure that: − all containers, hoses, nozzles are free of leaks; − all fuel nozzles are equipped with automatic shut-offs; and − always have operators stationed at both ends of the hose during fueling.  In the event of a release, refer to the Release Contingency Plan (EPP - Appendix 1E).  Do not wash equipment or machinery within 30 m of watercourses or waterbodies. Residual Effect Yes No Following Mitigation

There will be no residual effect regarding change in surface water quality following application of the above mitigation measures.

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FISH AND FISH HABITAT

Fish and fish habitat play a fundamental role in the functioning of natural ecosystems as well as in recreational and economic activities. Riparian vegetation and bank stability are important watercourse characteristics as they influence the rate of riparian soil erosion, provide filtration of runoff from the surrounding land, and provide cover, shade and food (i.e. terrestrial invertebrates) for fish (Berges, 2009). Loss of riparian habitat as a result of construction activities might reduce cover, increase water temperature and affect invertebrate populations (Sweeney et al., 2004). The introduction of deleterious substances may potentially affect fish and fish habitat (Sweeney et al., 2004). In the context of the Project, the term deleterious substance broadly includes suspended or deposited sediments and hydrocarbons. The degree of anticipated effects is species specific and may differ according to fish tolerance level. This VC was carried through because construction activities may contribute to soil erosion and increase sediment runoff within watercourses, thereby affecting suitability/availability of existing riparian and instream fish habitats. Also, fish habitat contamination may occur due to equipment fuel/hydraulic leaks. Potential leaks/spills are essentially related to petroleum products. However, the quantities are generally small and such events are limited in extent and duration. No potential effects on fish and fish habitat are anticipated during the operation phase of the Project. No change in fish movement, migration and fish passage or in fish mortality is anticipated since no construction activities are taking place in a watercourse or within a riparian strip. As provided in Table 5-1, potential effect associated with the construction of the Project on fish and fish habitat is the alteration of riparian or instream habitat function during construction. This potential effect is applicable to the Bromont CS and to a lesser extent the Saint-Basile Interconnect. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-5. An evaluation of significance is not required for those effects where no residual effect is identified. At the Bromont CS site, based on existing historical data from the CDPNQ (2019a), no known fish SOMC are present within the Beaudry Brook located within 30 m of the PDA. This small permanent watercourse is a fish-bearing watercourses with a moderate potential for spawning. A total of 4 fish species have been surveyed during stream fisheries. There were no surveyed fish SOMC in this watercourse. At the Saint-Basile Interconnect site, based on existing historical data from the CDPNQ (2019b), no known fish SOMC are present within the small unnamed intermittent watercourse located within 30 m of the PDA. The fish composition of this watercourse was not determined as no fish survey was carried out due to low water levels. The Bromont CS and the Saint-Basile Interconnect construction work might alter riparian or instream habitat function from sediment deposition resulting from erosion from the construction site. At the Bromont CS site, construction activities could have an effect on one small permanent watercourse that is located 10 m from the PDA (Beaudry Brook). At the Saint-Basile Interconnect site, construction activities could have an effect on one small intermittent watercourse which is be located 15 m from the PDA.

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Table 6-5 Alteration of Riparian or Instream Habitat Function during Construction Project Phase Construction Operation Main Mitigation  Direct grading away from waterbodies. Do not place fill material in a waterbody during grading. Measures  Refrain from clearing within 10 m of a watercourse to protect riparian areas. This area will be clearly marked prior to clearing operations.  Where practical, leave stumps in place, particularly on streambanks, to provide surface stability.  Fell trees away from watercourses where feasible. Immediately remove trees, debris or soil inadvertently deposited below the high watermark of a watercourse.  If the working surface is unstable, do not permit clearing equipment within the 10 m riparian buffer unless approved by the Environmental Inspector(s) or designate(s). Following clearing, the 10 m riparian buffer will remain intact (i.e., consisting of low-lying understory vegetation).  Install erosion and sediment control at all watercourses and/or waterbodies as directed by the Environmental Inspector(s) or designate(s).  Where water erosion is evident, and there is potential for runoff from the construction footprint to flow into a watercourse, refer to the Soil Erosion Contingency Plan (EPP – Appendix 1E).  Appropriate release prevention and response, containment and recovery equipment will be maintained at all work sites, in accordance with the Chemical and Waste Management Plan (EPP - Appendix 1F).  If an accidental release does occur, measures to control, contain, recover and clean up the release are to be implemented immediately to reduce the potential for adverse environmental and human health effects, or to ensure the release does not spread or increase in size. Refer to the Release Contingency Plan (EPP - Appendix 1E).  If machine clean-up cannot be completed prior to spring break-up, ensure cross drainage is re-established, and sedimentation and erosion controls are installed to protect the construction footprint and sensitive environmental features. Final clean-up and reclamation will generally occur during the following fall and/or winter, or as soon as conditions permit.  Following an adverse weather event, the Contractor will confirm the efficacy of sediment and erosion control measures and whether corrective action is required.  All equipment, including mats, must arrive at the Project site clean and free of soil or vegetative debris. Equipment will be inspected by the Environmental Inspector(s) or designate(s), or designate, and if deemed to be in appropriate condition will be approved for use and identified with a suitable marker or tag. Any equipment, including mats, which do not arrive in appropriate condition shall not be allowed on the construction footprint until it has been cleaned, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use.  The Contractor will collect all construction debris and other waste materials and dispose of at an approved facility and in accordance with the Chemical Waste Management Plan (EPP - Appendix 1F) and the Release Contingency Plan (EPP - Appendix 1E) unless otherwise authorized by the Environmental Inspector(s) or designate(s).  Bulk fuel trucks, service vehicles, and pick-up trucks equipped with box-mounted fuel tanks shall carry release prevention, containment, and clean-up materials that are suitable for the volume of fuels or oils carried, in accordance with the Chemical Waste Management Plan (EPP - Appendix 1F).  Release contingency material carried on bulk fuel and service vehicles, stationed near watercourses or waterbodies, or in environmental response units shall be suitable for use on land and water.  Do not allow fuel, oil, or hazardous material storage within 100 m of a watercourse or waterbody except where secondary containment is provided.  Conduct refuelling at least 100 m away from any watercourse or waterbody when feasible.  Employ the following measures to reduce the risk of fuel release into water: Where equipment refuelling is required within 100 m of a watercourse or waterbody, ensure that: − all containers, hoses, nozzles are free of leaks; − all fuel nozzles are equipped with automatic shut-offs; and − always have operators stationed at both ends of the hose during fueling.  In the event of a release, refer to the Release Contingency Plan (EPP - Appendix 1E).  Do not wash equipment or machinery within 30 m of watercourses or waterbodies. Residual Effect Yes No Following Mitigation

There will be no residual effect regarding change in riparian or instream habitat function following application of the above mitigation measures.

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VEGETATION

Vegetation is fundamental to the functioning of natural ecosystems. The native vegetation composition as well as its distribution, occurrence and ecological communities, strongly affect ecosystem functions, environmental cycles and the ability of other organisms, including humans, to use and benefit from natural resources (CNVC, 2013). This VC was carried through because construction activities will affect native vegetation and could result in a change in plant communities. No potential effects on vegetation are anticipated during the operation phase of the Project. As provided in Table 5-1, potential effects associated with the construction and operation of the Project on vegetation are:  Change in native vegetation communities.  Introduction or spread of invasive and non-native plant species during construction. These potential effects are applicable to the Bromont CS and to a lesser extent the Saint-Basile Interconnect. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-7 and 6-8. An evaluation of significance is not required for those effects where no residual effect is identified. At the Bromont CS site, there are no known plant species or ecological communities of management concern in the PDA (CDPNQ, 2019c; ECCC, 2019a). During the field surveys, no floristic SOMC were identified. However, three invasive plant species were identified within the PDA, namely the Alder buckthorn, the Reed canary grass, and the Common reed within the PDA. About 61.0% of the PDA is covered by native vegetation. The land use in the PDA consists of: 3.19 ha of woodland (38.4%), 2.29 ha of cultivated land (27.6%), 1.48 ha of wetland (17.8 %), 0.44 ha of graveled land (5.3%), 0.41 ha of early successional vegetation (4.9%), 0.29 ha of bare ground (3.5%) and.0.22 ha of mown field (2.6%).The presence of invasive species within the PDA is marginal compared to the total number of species observed (see Appendix B). At the Saint-Basile Interconnect, there are no known plant species or ecological communities of management concern in the PDA (CDPNQ, 2019d; ECCC, 2019b). During the field reconnaissance, no SOMC were identified. However, six invasive plant species were identified within the PDA, namely the Common reed, the Common valerian, the Reed canary grass, the Smooth brome, the Wild chervil, and the Wild parsnip. Land use in the PDA consists of: 0.48 ha of cultivated land (46.7%), 0.36 ha of early successional vegetation (34.3%), 0.19 ha of invasive species (18.2%) and 0.009 ha of graveled land (0.8%).

Change in Native Vegetation Communities

During construction, native vegetation cover will be removed within the Bromont CS PDA. The existing native vegetation cover within the Bromont CS PDA will be modified by the construction activities in two ways:  Long-term loss of native vegetation communities due to the CS footprint and the buffer zone.  Medium-term loss of native vegetation communities due to the TWS needed for the construction of the CS and due to the growth time needed for plant species (i.e. trees). During construction, the existing native vegetation cover within the Saint-Basile Interconnect PDA will be modified by the construction activities in two ways:  Long-term loss of native vegetation communities due to the Interconnect footprint.  Potential short-term loss of native vegetation communities due to the TWS needed for the construction of the Interconnect and due to the growth time needed for plant species (i.e. early successional vegetation). Following construction, TQM will do the reclamation throughout its TWS for both the Bromont CS (TWS outside the buffer zone) and the Saint-Basile Interconnect. Table 6-6 presents the loss or potential loss of native vegetation for the Bromont CS and the Saint-Basile Interconnect.

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Long-term loss of native vegetation communities for the Bromont CS and the Saint-Basile Interconnect will be felt during operation since the vegetation will not regenerate due to maintenance activities.

Table 6-6 Long-Term, Medium-Term and Short-Term Loss of Native Vegetation at the Bromont CS and the Saint-Basile Interconnect Short-Term Loss Project Component Long-Term Loss (ha) Medium-Term Loss (ha) Total Loss (ha) (ha) Bromont CS 4.65 0.42 - 5.07 Saint-Basile 0.003 - Up to 0.12 Up to 0.123 Interconnect

Table 6-7 Change to Native Vegetation Communities Project Phase Construction Operation Main Mitigation  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere Measures to safety and road closure regulations.  Clear timber, stumps, brush and other vegetation within the marked construction footprint boundaries. Clearing methods will take into account land use and landowner/leaseholder requirements.  Merchantable timber will be salvaged in accordance with landowner preference.  During clearing, fell trees towards the construction footprint wherever feasible. Recover trees that inadvertently fall into adjacent undisturbed vegetation.  Conduct grubbing only where stripping and grading is required.  Use a stump mulcher rather than grubbing on areas where stripping and grading is not necessary.  Reduce grubbing near watercourses, muskeg, and other wet areas to facilitate the restoration of shrub communities.  If previously unidentified rare plants or rare ecological communities are found on the construction footprint prior to or during construction, implement the Plant Species and Ecological Communities of Concern Discovery Contingency Plan (EPP - Appendix 1E).  The level of clean-up on all lands will ensure equivalent land capability is maintained.  Natural recovery is the preferred method of reclamation in non-agricultural areas on level terrain where erosion is not expected. Where natural recovery is not preferred, seed disturbed areas as per site requirements and as specified by the Environmental Inspector(s) or designate(s).  On privately owned lands such as pasture and hay land, base the final seed mix on input from landowners and the availability of seed at the time of reclamation.  Landowners are responsible for seeding cultivated lands.  Use only Certified No. 1 seed, unless Certified No. 1 is not available for select reclamation seed species (i.e., native species).  Seeding will follow as close as feasible to final clean-up and topsoil/strippings replacement pending seasonal or weather conditions.  Seed riparian and erosion prone areas with a cover crop and/or seed mix that has been approved by the responsible regulatory agency and/ or landowner, as soon as feasible after construction, prior to spring freshet wherever possible.  Restrict vehicle access over newly seeded areas. Residual Effect Yes: A loss or alteration of native vegetation No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/Reversibility Short-term Medium-term Long-term Permanent Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

For the Bromont CS TWS located outside of the buffer zone, the residual effect on native vegetation is predicted to be medium-term considering that the vegetation will regenerate after construction and due to the growth time needed for

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plant species (i.e. trees). The residual effect is long-term within the CS footprint and the buffer zone. For the Saint-Basile Interconnect, the residual effect on native vegetation is predicted to short-term on the TWS due to the growth time needed for plant species (i.e. early successional vegetation ), and long-term within the Interconnect footprint. With application of mitigation measures, the residual effect on native vegetation communities is considered to be reversible and low in magnitude. A significant effect is not likely to occur.

Introduction or Spread of Invasive and Non-Native Plant Species

During construction, vehicular traffic, exposed soil and increased human presence may introduce or spread invasive and non-native plant species. Weeds may unintentionally be spread by construction activities or may rapidly populate sites disturbed by construction.

Table 6-8 Introduction or Spread of Invasive and Non-Native Plant Species during Construction Project Phase Construction Operation Main Mitigation  All equipment, including mats, must arrive at the Project site clean and free of soil or vegetative debris. Measures Equipment will be inspected by the Environmental Inspector(s) or designate(s), and if deemed to be in appropriate condition will be approved for use and identified with a suitable marker or tag. Any equipment, including mats, which do not arrive in appropriate condition shall not be allowed on the construction footprint until it has been cleaned, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use.  Post signs at areas identified as having noxious weed infestations prior to start of construction.  If previously unidentified locations with listed weed infestations are found on the construction footprint during construction, the Environmental Inspector(s) or designate(s) will be contacted and will establish the appropriate mitigation or control procedures prior to continuing construction activities in the area.  Conduct basic shovel and sweep or compressed air cleaning before moving equipment from any locations identified as having a noxious weed infestation.  Monitor topsoil/strippings piles for weed growth during the course of construction and implement corrective measures (e.g., spraying, mowing, hand pulling) to avoid infestation when warranted.  Unless a certificate of weed analysis is provided, all construction material sources used for supplies of sand, gravel, rock, straw and mulch will be visually inspected to ensure they are free of listed weeds to the extent practical. If sources are suspected as having listed weeds, they shall be sampled and lab analyzed to ensure they meet the requirements of the responsible regulatory agency prior to obtaining or transporting any material to the Project site.  Implement Post-Construction Monitoring and treat listed weed infestation on the construction footprint as needed. Residual Effect Yes No Following Mitigation

There will be no residual effect regarding the introduction and propagation of invasive and non-native species following application of the above mitigation measures.

WETLANDS

Wetlands are fundamental to the functioning of natural ecosystems. Examples of wetland functions include maintaining biodiversity, storing water, carbon and energy, trapping and storing sediments, recharging aquifers, filtering water, reducing and dissipating energy and creating primary productivity (Ambrose et al., 2009). The distribution and occurrence of wetland habitats and its associated biodiversity not only affect ecosystem functions, but also environmental cycles and the ability of other organisms, including humans, to use and benefit from natural resources. This VC was carried through because construction activities may contribute to sedimentation, reduction of vegetation cover as well as fragmentation of wetlands, thereby affecting wetland functions. No potential effects on wetlands are anticipated during the operation of the Project. As provided in Table 5-1, potential effect associated with the construction and operation of the Project on wetlands is the loss or disturbance of wetlands.

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This potential effect is applicable to the Bromont CS Project component only as no wetlands are present in or within 30 m of the Saint-Basile Interconnect PDA. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-10. The PDA overlaps 5 wetland areas (MH-1 to MH-4 and MH-6) as listed in Table 4-9 of Section 4.3.6 (Figure 6). Permanent loss of wetlands is predicted for the wetlands located within the CS footprint. Medium-term loss or disturbance is predicted for the wetlands located within the buffer zone and the TWS. Table 6-9 presents the predicted loss or disturbance of each type of wetlands within the Bromont CS PDA.

Table 6-9 Loss or Disturbance of Wetlands in the Bromont CS PDA Medium-Term Disturbance Total Area of Wetland Loss Type of Wetland Permanent Loss (ha) (ha) and Disturbance (ha) Treed swamps 0.73 0.68 1.41 Shrubby swamp 0.00 0.02 0.02 Ponds 0.05 0.00 0.05 Total 0.78 0.70 1.48

The Bromont CS construction activities will require the removal of vegetation cover which may modify the biophysical conditions (hydrology and herbaceous vegetation composition) due to increased sun and wind exposure. Fragmentation of wetlands as well as sedimentation may also occur during construction. Potential temporary indirect disturbance may be applicable to wetlands within 30 m of the PDA during construction only. Long-term loss of wetlands will also be felt during operation since the vegetation will not regenerate due to maintenance activities.

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Table 6-10 Loss or Disturbance of Wetlands Project Phase Construction Operation Main Mitigation  The Company will obtain regulatory approval for construction activities occurring within wetlands, as Measures required. Construct the wetland crossings in accordance with the applicable regulatory requirements.  If wet/thawed soil conditions occur, implement the Wet Soil Contingency Plan (EPP - Appendix 1E).  Replace trench material as soon as feasible, and re-establish preconstruction contours within wetland boundary to facilitate cross right-of-way drainage. The Company will obtain regulatory approval prior to infilling wetlands, where required. Minimize the removal of vegetation in wetlands to the extent possible.  Implement financial compensation for the loss of wetlands as per the Loi concernant la conservation des milieux humides et hydriques (LQ 2017, c 14)1.  Direct grading away from wetlands.  Minimize grading within wetland boundaries. Do not use TWS within the boundaries of wetlands, unless required for site-specific purposes. TWS within the boundary of a wetland must be approved by the Environmental Inspector(s) or designate(s).  The Contractor will use berms, cross ditches, sediment fencing and/or other appropriate measures to prevent erosion and siltation into adjacent wetland areas, unless otherwise directed by the Company. Refer to the Soil Erosion Contingency Plan (EPP - Appendix 1E) for additional measures.  Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. Residual Effect Yes: Alteration of wetland function No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

No residual effects are predicted for the CS footprint since permanent loss of wetland will be financially compensated according to Loi concernant la conservation des milieux humides et hydriques (LQ 2017, c 14).The residual effect on the alteration of wetland functions is predicted to be medium-term within the buffer zone and the TWS. Considering recommended mitigation measures, the residual effect on wetlands is considered reversible and low magnitude. A significant effect is not likely to occur.

WILDLIFE AND WILDLIFE HABITAT

Wildlife and wildlife habitat play a key role in the proper functioning of natural ecosystems and the biodiversity it supports. Wildlife habitats are referred to as environments in which wildlife species find sufficient biophysical elements necessary for its survival and reproduction. Wildlife and wildlife habitats, in particular game species and furbearers, are important to the public in terms of economics and recreational activities (i.e. hunting and trapping) (MFFP, 2019). This VC was carried through because construction and operation activities may affect the availability and connectivity of habitats as well as the mortality risk of the species present. Construction and operation activities have the potential to interact with wildlife and wildlife habitat through clearing of vegetation, grading, trenching, noise, vibration, luminosity, soil and topsoil piles, on-site materials storage as well as through vehicle movement. As provided in Table 5-1, potential effects associated with the construction and operation of the Project on wildlife and wildlife habitat are:  Change in habitat availability.  Change in habitat connectivity and wildlife movement.

1 Act respecting the conservation of wetlands and bodies of water

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 Change in mortality risk during construction. These potential effects are applicable to the Bromont CS and to a lesser extent the Saint-Basile Interconnect. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-11 to 6- 13. At the Bromont CS site, based on existing historical data from the CDPNQ (2019a), ECCC (2019a), MELCC (2019a) and AARQ (2018), there are no known occurrences in the PDA for any of the SOMC listed in Table 4-10. However, considering this existing data and preferential habitats, the Canada warbler, the Eastern wood-pewee, the Four-toed salamander, the Northern dusky salamander, and the Northern ringneck snake have the potential to be found within the PDA or its surrounding 30 m. The Four toed salamander was found within the PDA during the field survey. This species is provincially recognized as likely to be threatened or vulnerable, but is not recognized as a SOMC by the federal government. A survey (wildlife sweep) shall be conducted to validate the presence of SOMC in the PDA prior to construction. Where required, appropriate mitigation measures will be identified and put in place. At the Saint-Basile Interconnect site, based on existing historical data from the CDPNQ (2019b), ECCC (2019b), MELCC (2019a) and AARQ (2018), there are no known occurrences within the PDA for any of the SOMC listed in Table 4-11. During the field reconnaissance, no wildlife SOMC were found within the PDA or its surrounding 30 m and no habitats matched any of the SOMC preferential habitats.

Change in Habitat Availability

Habitat availability refers to the existence of conditions suitable for the life requirements of wildlife. This potential effect is applicable to the Bromont CS and the Saint-Basile Interconnect. For both the Bromont CS and the Saint-Basile Interconnect components, construction activities require clearing of vegetation, grading and trenching, which may cause direct short-term to medium-term loss and long-term loss of habitat for wildlife. During construction, wildlife shelters such as nests, dens, burrows and hibernacula may also be lost or disturbed. Associated sensory disturbance (noise, vibration and luminosity) during construction and operation may also result in habitat avoidance or reduced habitat effectiveness for some species. For the Bromont CS component, although changes to habitat availability will be most pronounced during construction, operation may continue to have an influence on wildlife and wildlife habitat associated long-term disturbance (noise) at the CS. For the Saint-Basile Interconnect component, no potential effects on habitat availability are anticipated during its operation phase.

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Table 6-11 Change in Habitat Availability Project Phase Construction Operation Main Mitigation  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to Measures safety and road closure regulations.  Clear timber, stumps, brush and other vegetation within the marked construction footprint boundaries. Clearing methods will take into account land use and landowner/leaseholder requirements.  Natural recovery is the preferred method of reclamation in non-agricultural areas on level terrain where erosion is not expected. Where natural recovery is not preferred, seed disturbed areas as per site requirements and as specified by the Environmental Inspector(s) or designate(s).  If previously unidentified listed or sensitive wildlife species or their site-specific habitat (e.g., dens, nests) are identified during the Project construction, report to the Environmental Inspector(s) or designate(s) and implement the Wildlife Species of Concern Discovery Contingency Plan (EPP - Appendix 1E).  In the event clean-up activities are scheduled to occur within the Primary Nesting Period for the Bird Conservation Region for migratory birds, refer to the Breeding Bird and Nest Management Plan (EPP - Appendix 1F).  In the event an active nest is found, it will be subject to site-specific mitigation measures (i.e., clearly marked protective buffer around the nest and/or non-intrusive monitoring) based on the Breeding Bird and Nest Management Plan (EPP - Appendix 1F).  Ensure that noise abatement equipment on machinery is in good working order.  The Contractor will monitor the open trench for trapped wildlife. Should any wildlife be identified, the Contractor will contact the Environmental Inspector(s) or designate(s) and Construction Manager; The Environmental Inspector(s) or designate(s) will contact the responsible regulatory agency or a Wildlife Resource Specialist, where required, for direction.  The Contractor will erect the appropriate signage and supply and install amphibian/reptile exclusion fencing, as directed by the Environmental Inspector(s) or designate(s) in consultation with the Wildlife Resource Specialist.  If required, conduct area searches of the fenced Project footprint and remove listed salamanders and snakes encountered within the exclusion area (distance and location to be determined). Obtain applicable permits (i.e., SEG permit) for handling salamanders and snakes from the MFFP.  Exclusion fencing should not be removed until construction is complete. Residual Effects Yes: Loss or alteration of wildlife habitat No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High For the Bromont CS, potential residual effects on habitat availability would be long-term on the CS footprint and the buffer zone. However, even though the availability of forested wildlife habitats will be reduced in these areas, the buffer zone could provide habitat to other species, such as those preferring shrubby or herbaceous vegetation. Potential residual effects would be short-term to medium-term within the TWS (outside the buffer zone) where regeneration of vegetation is anticipated. The land use in the PDA consists of: 3.19 ha of woodland (38.4%), 2.29 ha of cultivated land (27.6%), 1.48 ha of wetland (17.8 %), 0.44 ha of graveled land (5.3%), 0.41 ha of early successional vegetation (4.9%), 0.29 ha of bare ground (3.5%) and.0.22 ha of mown field (2.6%). For the Saint-Basile Interconnect, potential residual effects would be long-term on the Interconnect footprint and short- term on the TWS where regeneration of vegetation is anticipated. Land use in the PDA consists of: 0.48 ha of cultivated land (46.7%), 0.36 ha of early successional vegetation (34.3%), 0.19 ha of invasive species (18.2%) and 0.009 ha of graveled land (0.8%). Considering the recommended mitigation measures, the residual effect of loss or alteration of wildlife habitat for both Project components is reversible and of low magnitude. A significant effect is not likely to occur.

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Change in Habitat Connectivity and Wildlife Movement

Habitat connectivity refers to the ability of the landscape to maintain local or regional wildlife movements. This potential effect is applicable to the Bromont CS and the Saint-Basile Interconnect. For the Bromont CS component, construction activities have the potential to result in changes to daily and seasonal movement patterns for wildlife as well as habitat fragmentation. The access road to the CS, soil and topsoil piles, as well as on-site materials storage could act as short-term physical barriers to daily species movement or seasonal migration for amphibians, reptiles and small mammals. Furthermore, the vegetation clearing will fragment wetlands and forest stands which results in short-term to medium-term or long-term reduced habitat integrity and connectivity and has the potential to alter movement patterns of wildlife. During operation of the CS, noise and vibration disturbances may also alter wildlife movement on the long-term as some species may try to avoid such conditions and change trajectories. For the Saint-Basile Interconnect component, construction activities have the potential to result in changes to daily and seasonal movement patterns for wildlife. Soil and topsoil piles, as well as on-site materials storage could act as short- term or long-term physical barriers to daily species movement or seasonal migration for amphibians, reptiles and small mammals. No potential effects on habitat connectivity and wildlife movement are anticipated during the operation phase of this Project component.

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Table 6-12 Change in Habitat Connectivity and Wildlife Movement Project Phase Construction Operation Main Mitigation  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere Measures to safety and road closure regulations.  Clear timber, stumps, brush and other vegetation within the marked construction footprint boundaries. Clearing methods will take into account land use and landowner/leaseholder requirements.  Natural recovery is the preferred method of reclamation in non-agricultural areas on level terrain where erosion is not expected. Where natural recovery is not preferred, seed disturbed areas as per site requirements and as specified by the Environmental Inspector(s) or designate(s).  If previously unidentified listed or sensitive wildlife species or their site-specific habitat (e.g., dens, nests) are identified during the Project construction, report to the Environmental Inspector(s) or designate(s) and implement the Wildlife Species of Concern Discovery Contingency Plan (EPP - Appendix 1E).  In the event clean-up activities are scheduled to occur within the Primary Nesting Period for the Bird Conservation Region for migratory birds, refer to the Breeding Bird and Nest Management Plan (EPP – Appendix 1F).  In the event an active nest is found, it will be subject to site-specific mitigation measures (i.e., clearly marked protective buffer around the nest and/or non-intrusive monitoring) based on the Breeding Bird and Nest Management Plan (EPP – Appendix 1F).  Ensure that noise abatement equipment on machinery is in good working order.  The Contractor will monitor the open trench for trapped wildlife. Should any wildlife be identified, the Contractor will contact the Environmental Inspector(s) or designate(s) and Construction Manager; The Environmental Inspector(s) or designate(s) will contact the responsible regulatory agency or a Wildlife Resource Specialist, where required, for direction.  The Contractor will erect the appropriate signage and supply and install amphibian/reptile exclusion fencing, as directed by the Environmental Inspector(s) or designate(s) in consultation with the Wildlife Resource Specialist.  If required, conduct area searches of the fenced Project footprint and remove listed salamanders and snakes encountered within the exclusion area (distance and location to be determined). Obtain applicable permits (i.e., SEG permit) for handling salamanders and snakes from the MFFP.  Exclusion fencing should not be removed until construction is complete. Residual Effects Yes: Change in habitat connectivity and wildlife movement No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/Reversibility Short-term Medium-term Long-term Permanent Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

For the Bromont CS, potential residual effects on habitat connectivity and wildlife movement would be long-term on the CS footprint and the buffer zone, while it would be short-term to medium-term within the TWS (outside the buffer zone) where regeneration of vegetation is anticipated. For the Saint-Basile Interconnect, potential residual effects would be long-term on the Interconnect footprint and short-term on the TWS. Considering the recommended mitigation measures, the residual effect of change in habitat connectivity and wildlife movement is reversible and low magnitude. A significant effect is not likely to occur.

Change in Mortality Risk

Construction activities of both the Bromont CS and the Saint-Basile Interconnect may increase wildlife mortality risk through several mechanisms including destruction of nests, dens, burrows and hibernacula as well as through collisions with vehicles. The degree of effects on wildlife mortality risk is species specific. During operation, no interaction with wildlife and wildlife habitat is anticipated with the Project components.

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Table 6-13 Change in Mortality Risk during Construction Project Phase Construction Operation Main Mitigation  In the event clean-up activities are scheduled to occur within the Primary Nesting Period for the Bird Measures Conservation Region for migratory birds, refer to the Breeding Bird and Nest Management Plan (EPP - Appendix 1F).  In the event an active nest is found, it will be subject to site-specific mitigation measures (i.e., clearly marked protective buffer around the nest and/or non-intrusive monitoring) based on the Breeding Bird and Nest Management Plan (EPP - Appendix 1F).  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to safety and road closure regulations.  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.  If previously unidentified listed or sensitive wildlife species or their site-specific habitat (e.g., dens, nests) are identified during the Project construction, report to the Environmental Inspector(s) or designate(s) and implement the Wildlife Species of Concern Discovery Contingency Plan (EPP – Appendix 1E).  Unanticipated wildlife issues encountered during construction will be discussed and resolved by the Environmental Inspector(s) or designate(s), Wildlife Resource Specialist(s), and the responsible regulatory agencies, if necessary.  Do not harass or feed wildlife or livestock. Do not permit construction personnel to have dogs on the construction footprint. Firearms are not permitted in Project vehicles or on the construction footprint, or at associated Project facilities. In addition, prohibit the recreational use of all-terrain vehicles or snowmobiles by construction personnel on the construction footprint. Report any incidents with wildlife to the Environmental Inspector(s) or designate(s) or designate(s) immediately.  The Contractor will erect the appropriate signage and supply and install amphibian/reptile exclusion fencing, as directed by the Environmental Inspector(s) or designate(s) in consultation with the Wildlife Resource Specialist.  If required, conduct area searches of the fenced Project footprint and remove listed salamanders and snakes encountered within the exclusion area (distance and location to be determined). Obtain applicable permits (i.e., SEG permit) for handling salamanders and snakes from the MFFP.  Exclusion fencing should not be removed until construction is complete. Residual Effect Yes: Increased wildlife mortality risk No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Potential residual effects on mortality risk are predicted to be short-term for both the Bromont CS and the Saint-Basile Interconnect Project components. Considering the recommended mitigation measures, the residual effect of increased wildlife mortality risk is reversible and low magnitude. A significant effect is not likely to occur.

SPECIES AT RISK OR SPECIES OF SPECIAL STATUS

Refer to the Fish and Fish Habitat (Section 6.1.3), Vegetation (Section 6.1.4) and Wildlife and Wildlife Habitat (Section 6.1.6) elements.

AIR AND GREENHOUSE GAS EMISSIONS

The atmospheric environment sustains life and maintains the health and well-being of numerous organisms (humans, animals, vegetation, etc.). Greenhouse gas emissions accumulating in the atmosphere are known for contributing to global warming, which is in turn responsible for a number of other changes in the atmosphere, soils, oceans and human health (Ouranos, 2011).

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This VC was carried through because construction and operation activities may affect the ambient air quality and release GHGs. Effects on air quality and GHGs are expected during the construction of both the Bromont CS and the Saint-Basile Interconnect Project components. However, effects on air quality and GHGs during operation is only expected for the Bromont CS. For the purpose of clarity, the two phases of the Project will be treated separately. Construction

Construction activities can generate air contaminants and GHG emissions through operation of vehicles and construction equipment. No burning of any form of construction/clearing debris is anticipated. As provided in Table 5-1, potential effects associated with the construction of the Project on air and GHG emissions are:  Change to ambient air quality during construction.  Release of GHGs during construction. These potential effects are applicable to the Bromont CS and the Saint-Basile Interconnect components. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-14 and 6-15.

Change to Ambient Air Quality

For both the Bromont CS and the Saint-Basile Interconnect Project components, construction activities may affect the local air quality considering:

 Project-related SO2 will be released through the combustion of fuels primarily during the construction phase. This includes emissions from vehicles and the construction equipment fleet.

 Project-related emissions of NOX include emissions from functioning vehicles and construction equipment exhaust.

 Project-related particulate matter emissions are associated primarily with construction equipment exhaust (PM2.5, PM10 and TSP).  Project-related CO emissions will result from incomplete combustion of fuel, mainly from vehicles and construction equipment.

Table 6-14 Change to Ambient Air Quality during Construction Project Phase Construction Operation Mitigation Measures  Reduce idling of equipment, where possible.  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.  The Contractor will ensure equipment is well maintained.  Where traffic as a result of the Project has the potential to create a hazardous or irritating level of dust to nearby residents, dust control on existing access roads will be achieved through the application of water or calcium chloride (or equivalent). Only water will be used for dust control on the construction footprint. Residual Effect Yes: Change to ambient air quality during construction No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

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Even with the application of the recommended mitigation measures, air quality may be temporarily affected locally. Residual effects associated with the construction phase on air quality are predicted to be short-term, of low magnitude and reversible. A significant effect is not likely to occur.

Release of GHGs

For both the Bromont CS and the Saint-Basile Interconnect components, construction activities will result in GHG emissions, thereby contributing to provincial, national and global GHG emission totals. Use of best practices is proposed to reduce releases of GHGs as much as possible during construction.

Table 6-15 Release of GHGs during Construction Project Phase Construction Operation Mitigation Measures  Reduce idling of equipment, where possible.  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.  The Contractor will ensure equipment is well maintained. Residual Effect Yes: Release of GHGs during construction No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA International Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Although the release of GHGs to atmospheric GHG concentrations are irreversible, the magnitude is low because the Bromont CS and Saint-Basile Interconnect contribution to GHG emissions during construction will be small and not reportable. A significant effect is not likely to occur. Operation

Operation activities will generate air contaminant and GHG emissions through the operation of the gas turbine compressor package and the APU. As provided in Table 5-1, potential effects associated with operation of the Project on air and GHG emissions are:  Change to ambient air quality during operation.  Release of GHGs during operation. These potential effects are applicable to the Bromont CS component only. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-18 and 6-19. During normal operation, the Bromont CS will be electrically driven most of the time and will not produce air emissions. However, the gas turbine compressor package and APU that are intended to run during times where the electric motor driven unit is unavailable, including due to primary utility outages and routine maintenance, will release air contaminants and GHGs during operation. The primary compressor unit (A1) to be installed, an electric motor drive, will not emit any contaminants or GHGs during operation. The gas driven back-up unit (A2) and its APU have the potential to generate air contaminant and GHG emissions. The gas turbine is expected to operate about 19% of the time. As mentioned in Section 3.3, a gas-fired APU is also estimated to work 5% of the time. In addition, fugitive and venting emissions have been estimated. Venting will occur once a year during annual maintenance.

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The estimated air contaminant and GHG emissions for the turbine of the additional compressor unit (Unit A2) and the APU as well as anticipated fugitive and venting emissions are presented in Table 6-16. All PM emissions are considered to be under 2.5 microns. The complete air and GHG emissions report (SNC-Lavalin, 2019) is in Appendix D.

Table 6-16 Estimated Air Contaminants and GHG Emissions during Operation of the Compressor Unit (A2) and the APU, and Anticipated Fugitive and Venting Emissions Fugitive Compressor APU Venting Total Contaminants Emissions Reporting Unit (A2) Thresholds In use frequency 19% 5% NA Once a year NPRI1 RDOCECA2 Fuel consumption (GJ/y) 158,654 3,878 NA NA 162,532

GHG (CO2eq)

Carbon dioxide (CO2) 7,776 190 1.0 0.21 7,967

Methane (CH4) 197 4.8 1,269 272

Nitrous oxide (N2O) 62 1.5 NA NA 63

CO2eq 8,034 196 1,269 272 9,772 Main atmospheric contaminants (tons/year)

Nitrogen oxides (NOX) 6.1 0.94 NA NA 7.1 20 Carbon monoxide (CO) 3.7 0.61 NA NA 4.4 20

Sulfur dioxide (SO2) 0.012 0.0003 NA NA 0.013 20 Volatile organic compound (VOC) 0.14 0.13 NA NA 0.27 10 Total organic compound (TOC) 2.2 0.8 NA NA 2.9 NA

Particulate matter (PM, PM10 and PM2.5) 0.45 0.032 NA NA 0.48 20 / 0.5 / 0.33 Notes: 1National Pollutant Release Inventory 2Regulation respecting mandatory reporting of certain emissions of contaminants into the atmosphere 3 Declaration thresholds for PM Total / PM10 / PM2.5

Change to Ambient Air Quality

For the Bromont CS Project component air contaminant emissions, section 52 of Québec’s Clean Air Regulation would apply for the compressor unit since the turbine could be used in situations other than an emergency, such as for normal compressor operation when the existing unit is out of service for maintenance purpose. The federal Proposed Guidelines for the Reduction of Nitrogen Oxide Emissions from Natural Gas-Fuelled Stationary Combustion Turbines set standards for NOx emissions that also apply for the compressor unit. The section 52 does not apply to the APU since it will only be used in case of an emergency. However, since September 2016, the federal Multi-sector Air Pollutants Regulations - Part 2: Stationary Spark-ignition Engines applies to both the compressor unit and the APU for NOx, even if the APU is only used in emergency situations. The air emissions estimated by the A2 Unit and APU manufacturers comply with the applicable emissions performance of the provincial and federal guidelines and regulations are shown in Table 6-17. Emissions will be reported to provincial and/or federal regulatory authorities based on actual usage when reporting thresholds are met or exceeded.

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Table 6-17 Compressor Unit Air Emissions during Operation / Comparison to Regulatory Air Quality Criteria Compressor Unit (A2) Unit (A2) and APU Combined Multi-sector Air Proposed Guidelines Québec’s Clean Air Turbine Pollutants Regulations - Combined Contaminant for Stationary Regulation Emissions Part 2: Stationary Spark- Emissions Combustion Turbines Thresholds (g/MJ) (g/MJ) ignition Engines (g/MJ) Thresholds (g/GJ)1 Thresholds (g/kWh)

Nitrogen oxides (NOX) 2.5 140 0.039 2.7 <2.68 Carbon monoxide (CO) 1.8 - 0.024 - - Total hydrocarbons 2.2 - 0.014 - - Note: 1 Proposed Guidelines for the Reduction of Nitrogen Oxide Emissions from Natural Gas-Fuelled Stationary Combustion Turbines stipulates that for combustion turbines rated between 4 and 70 MW, the limit for NOx emissions is 15% O2 when set at 25 ppm or 140 g/GJ energy output. Source: SNC-Lavalin 2019 The operation of the Bromont CS component will emit air contaminants, however, these emissions will be below applicable reporting thresholds (SNC-Lavalin, 2019) except for fine particulate matter (PM2.5) that is above the reporting thresholds. Reporting to the provincial regulator will be required.

Table 6-18 Change in Ambient Air Quality during Operation Project Phase Construction Operation Mitigation Measures  Reduce idling of equipment, where possible.  The compressor and APU will be low NOx-emission equipment.  Implement TC Energy’s Fugitive Emission Detection and Repair Program during operations to identify and reduce fugitive emissions. Residual Effect Yes: Change in ambient air quality during operation No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Considering recommended mitigation measures, the residual effects associated with the operation of the Bromont CS on ambient air quality are long-term, reversible after decommissioning and abandonment and of low magnitude. A significant effect is not likely to occur.

Release of GHGs

Operation of the Bromont CS will emit GHGs. The estimated GHG emissions related to this Project component are 9,772 t CO2eq/year, including fugitive and blowdown emissions (SNC-Lavalin, 2019). According to the Québec Regulation respecting mandatory reporting of certain emissions of contaminants into the atmosphere, any person or municipality operating an establishment that emits GHGs equal to or greater than 10,000 metric tons of CO2 equivalent (CO2eq) into the atmosphere is required to report its emissions by June 1 each year. Since the estimated GHG emissions are below this threshold, at 9,772 t CO2eq/year, no reporting is required. Use of best practices is proposed to reduce releases of GHGs as much as possible during operation.

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Table 6-19 Release of GHGs during Operation Project Phase Construction Operation Mitigation Measures  Reduce idling of equipment, where possible.  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.  The Contractor will ensure equipment is well maintained.  The compressor and APU will be low NOx-emission equipment. Residual Effect Following Yes: Release of GHGs during operation No Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA International Duration/Reversibility Short-term Medium-term Long-term Permanent Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Considering recommended mitigation measures, the residual effects associated with the operation of the Bromont CS on GHG emissions are irreversible, however they are of low magnitude and irregular in frequency. A significant effect is not likely to occur.

ACOUSTIC ENVIRONMENT

The acoustic environment is often characterized by a mixture of noises from human activities and natural sounds. Acoustic environment quality can be defined as the perceived sound levels attributed to all noise sources (Brown et al., 2015). This VC was carried through because construction and operation activities will generate noise. Although most Project activities have the potential to emit noise, this assessment focuses on the evaluation of activities that are expected to generate noise that might result in an increase of overall sound levels at identified receptors. Potential effects on the acoustic environment are associated with the construction and operation phases. Effects on the acoustic environment are expected during the construction phase of the Bromont CS and the Saint-Basile Interconnect Project components. However, effects on the acoustic environment during the operation phase is only expected for the Bromont CS. For the purpose of clarity, the two phases of the Project will be treated separately. Construction

Construction activities will generate noise through functioning vehicles and the construction equipment fleet. As provided in Table 5-1, the potential effect associated with the construction of the Project on the acoustic environment is the temporary increase in local noise levels. This potential effect is applicable to both the Bromont CS and the Saint-Basile Interconnect components. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-20. Typical noise sources associated with construction include diesel powered mobile equipment such as: dozers, excavators, graders as well as drilling and sandblasting equipment. The frequency will be multiple irregular and short- term in duration.

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Table 6-20 Temporary Increase in Local Noise Levels during Construction Project Phase Construction Operation Mitigation Measures  Ensure that noise abatement equipment on machinery is in good working order. Take reasonable measures to control construction related noise near residential areas.  Reduce idling of equipment, where possible.  Construction activities are expected to occur 5 days a week for up to 10 hours during daytime hours.  Address complaints in a timely manner and determine if additional mitigation is required. Residual Effect Yes: Increase in noise from construction activities No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

With the application of mitigation measures, residual effects on the acoustic environment resulting from construction are predicted to be reversible in the short-term and of low magnitude. A significant effect is not likely to occur. Operation

Operation activities at the Bromont CS will generate noise that may contribute to the overall local noise level through the A1 compressor and the back-up compressor unit (A2) and auxiliary equipment. No noise will be generated during the operation of the Saint-Basile Interconnect. As provided in Table 5-1, the potential effect associated with the operation of the Bromont CS on the acoustic environment is the increase in local noise levels. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-22. Preliminary noise modelling was conducted for four receptor points (P1 to P4) situated at the three nearest residences and at the Camping Vélo Bromont to evaluate predicted noise level contribution of this Project component on the ambient acoustic environment. Two of these receptor points, P1 and P2, were located in the City of Bromont, while P3 and P4 were located in the Canton de Shefford. Applicable noise level thresholds are defined based on zoning by the MELCC through the Instruction Note 98-01 (IN 98- 01), dealing with noise complaints and requirements to the companies that generate it. Municipal bylaws may provide additional standards regarding the noise that applies in their respective municipalities. Out of the three municipalities located in the Bromont CS LAA, only the City of Bromont has a municipal noise bylaw that includes quantitative noise criteria standards (Bylaw No. 1026-2015) (refer to Appendix C for details). Therefore, the municipal bylaw is only applicable for the receptor points P1 and P2. The results of the noise modelling are presented in Table 6-21. Refer to Appendix C for full noise modelling report.

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Table 6-21 Estimated Noise Level of the Compression Units Estimated Noise Level IN 98-01 City of Bromont (dBA) Based on Receptor Threshold (dBA) Threshold (dBA) point Location Municipality Modelling

Day Night Day Night Unit A1 Unit A2

P1 Residence Bromont 49 49 55 50 34 37 Camping Vélo P2 Bromont 50 45 55 50 34 40 Bromont P3 Residence Shefford 45 40 N/A N/A 30 36 P4 Residence Shefford 45 40 N/A N/A 34 37

Based on preliminary equipment selection and design, noise modelling results indicate that the A1 unit (electric compressor) and the gas-fired compressor (unit A2) will not result in exceedances to the applicable noise level thresholds at all four receptor points. Therefore, the preliminary noise modeling meets the IN 98-01 and the Bylaw No. 1026-2015 standards. Mitigation measures will be included in the final equipment selection and design during detailed engineering to ensure compliance with regulatory noise level thresholds at sensitive receptors located near the Project component.

Table 6-22 Increase in Local Noise Levels during Operation Project Phase Construction Operation Mitigation Measures  Minimum acoustic specifications for compressor enclosure, ventilation elements and piping insulation, where applicable, will be incorporated into Project design and engineering.  Ensure design elements that act as noise controls are implemented to achieve compliance with regulatory limits for noise. Refer to the Noise Impact Assessment (Appendix C).  Address complaints in a timely manner and determine if additional mitigation is required. Residual Effect Yes: Increased noise from compressor units No Following Mitigation during operation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

With the application of recommended mitigation measures, potential adverse effects on the acoustic environment for the operation of the Bromont CS are predicted to be of low magnitude and reversible. A significant effect is not likely to occur.

SOCIO-ECONOMIC ENVIRONMENT

HUMAN OCCUPANCY AND RESOURCE USE

Human occupancy and resource use refers to current and future proposed occupancy as well as public and private use of land and resources by humans. It involves various uses, such as residency, commercial enterprises, recreational activities and enjoyment of land and resource. This VC was carried through because construction activities will result in a change of land use. Construction activities have the potential to interact with human occupancy and resource use through the disruption of land activities and land use. No potential effects on the human occupancy and resource use are anticipated during the operation phase of the Project.

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As provided in Table 5-1, potential effects associated with construction and operation of the Project on human occupancy and resource use are:  Temporary disruption of agricultural activities during construction.  Loss of agricultural lands.  Disruption of recreational activities during construction. Potential effects on the human occupancy and resource use are applicable to the Bromont CS and the Saint-Basile Interconnect. However, the potential effect of loss of agricultural lands and the disruption of recreational activities is only applicable for the Bromont CS component. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-23 to 6-25. An evaluation of significance is not required for those effects where no residual effect is identified.

Temporary Disruption of Agricultural Activities

Agricultural activities in the PDA of both the Bromont CS and the Saint-Basile Interconnect will be disrupted during the construction phase. Construction activities may result in general disturbance and nuisances to agricultural activities due to noise, dust, temporary relocation or disruption of existing access and circumvention of TWSs. Agricultural activities will return to normal once the final clean-up and reclamation is completed. For the Bromont CS, a portion of the TWS will be located on cultivated land (0.98 ha) and will result in short-term disruption of agricultural activities. For the Saint-Basile Interconnect, TWS might be located on cultivated land (up to 0.12 ha) and construction activities might result in the short- term disruption of agricultural activities.

Table 6-23 Temporary Disruption of Agricultural Activities during Construction Project Phase Construction Operation Mitigation Measures  Notify potentially affected landowners, lessees and nearby residents of the intended Project schedule before the start of construction to avoid or reduce impacts to their operations or activities.  Post signage to discourage unauthorized public access onto the construction footprint during construction.  Arrange for landowners to harvest crops, if practical. Mow, cut or bale any remaining crops and remove from the construction footprint to facilitate topsoil handling.  Leave gaps in windrows (e.g., topsoil/strippings, grade spoil, rollback, snow) and strung pipe at obvious drainages and wildlife trails, and to allow for livestock and vehicle/machinery passage across the construction footprint.  Conduct topsoil salvage on all arable or potentially arable lands to promote successful reclamation and ensure this resource is returned to an equivalent land capability.  The level of clean-up on all lands will ensure equivalent land capability is maintained.  Machine clean-up activities will follow completion of construction activities as closely as feasible.  The Environmental Inspector(s) or designate(s) will determine the locations where subsoil compaction is an issue. Prior to topsoil/strippings replacement, rip compacted subsoils on the construction footprint with a multi-shank ripper or breaking disc to a depth of 30 cm or the depth of compaction, whichever is deeper. If soils are moist, postpone ripping of subsoils until soils dry to ensure that the soils fracture when ripped.  Landowners are responsible for seeding cultivated lands.  On privately owned lands such as pasture and hay land, base the final seed mix on input from landowners and the availability of seed at the time of reclamation. Landowners are responsible for seeding cultivated lands. Residual Effect Yes: Disruption of agricultural activities No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

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Residual effects on agricultural activities for both the Bromont CS and the Saint-Basile Interconnect will be low in magnitude, short term in duration and reversible following completion of construction activities. With the application of mitigation measures, a significant effect is not likely to occur.

Loss of Agricultural Lands

For the Bromont CS, the CS footprint will be located in a mostly wooded area where no merchantable harvest is present within the PDA. The proposed access road footprint is located partly on an existing path, but mostly on cultivated land, and may result in long-term loss of agricultural lands (1.31 ha).

Table 6-24 Loss of Agricultural Lands Project Phase Construction Operation Mitigation Measures  Topsoil/strippings from the area that will become the permanent footprint of the facility will be salvaged and conserved. The topsoil/strippings will be stockpiled in a designated location, in a manner that will not cause erosion or sedimentation.  Notify potentially affected landowners, lessees and nearby residents of the intended Project schedule before the start of construction to avoid or reduce impacts to their operation or activities.  Inform all responsible federal and provincial resource agencies and interested municipal officials of the Project developments as warranted. Residual Effect Yes: Loss of agricultural lands No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction Low Moderate High confidence The residual effect is long-term and reversible for the agricultural lands within the proposed access road footprint at the Bromont CS. With the application of mitigation measures, the residual effect on agricultural lands is considered to be low in magnitude. A significant effect is not likely to occur.

Disruption of Recreational Activities

At the Bromont CS site, construction activities may result in disturbance/nuisances to the land users’ recreational activities. Potential effects may include a temporary disturbance of trapping or hunting activities. Construction activities may result in the sensory disturbance of the Estriade cycling path and the Camping Vélo Bromont.

Table 6-25 Disruption of Recreational Activities during Construction Project Phase Construction Operation Mitigation Measures  Notify potentially affected landowners, lessees and nearby residents of the intended Project schedule before the start of construction to avoid or reduce impacts to their operations or activities.  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to safety and road closure regulations.  Follow measures outlined in the Traffic Control Management Plan (EPP - Appendix 1F).  Clearly delineate areas that have access restrictions. Restrict access to construction personnel only.  Post signage to discourage unauthorized public access onto the construction footprint during construction. Residual Effect Yes No Following Mitigation There will be no residual effects regarding the disruption of recreational activities following application of the above mitigation measures.

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SOCIAL AND CULTURAL WELL-BEING

Social and cultural well-being refers to community quality of life and may be influenced by many factors such as, demography, traditional and cultural institutions, maintenance of heritage, access to recreation amenities, arts and cultural activities, etc. This VC was carried through because construction activities may affect the community and landowners’ lives. Construction activities have the potential to interact with social and cultural well-being through, for example, interaction with transient workers. As provided in Table 5-1, potential effect associated with construction of the Project on social and cultural well-being is the disruption of surrounding community and landowner. This potential effect is applicable to the Bromont CS and to a lesser extent the Saint-Basile Interconnect Project components. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-26. An evaluation of significance is not required for those effects where no residual effect is identified. At the Bromont CS, the estimated workforce is approximately 50 workers on average and 200 at peak and the duration of construction is about 18 months. At the Saint-Basile Interconnect, the estimated workforce is approximately 15 to 20 workers and the duration of construction is about 4 to 5 weeks. During construction of both the Bromont CS and the Saint-Basile Interconnect, transient workers may interact with landowners, small local businesses (one greenhouse and one farmer’s market near the Saint-Basile Interconnect and the Camping Vélo Bromont near the Bromont CS), and local communities, potentially disrupting community and landowner life. However, The Project has a limited scope, relatively small workforce, short duration of construction and long hours of shift work that will minimize community interaction. Therefore, there are limited predicted interactions with social and cultural well-being.

Table 6-26 Disruption of Surrounding Community and Landowner during Construction Project Phase Construction Operation Mitigation Measures  Notify potentially affected landowners, lessees and nearby residents of the intended Project schedule before the start of construction to avoid or reduce impacts to their operations or activities.  Inform all responsible federal and provincial resource agencies and interested municipal officials of the Project developments as warranted.  Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to safety and road closure regulations.  Ensure that noise abatement equipment on machinery is in good working order. Take reasonable measures to control construction related noise near residential areas.  Reduce idling of equipment, where possible.  Follow measures outlined in the Traffic Control Management Plan (EPP - Appendix 1F).  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.  Employees and contractors will adhere to TC Energy’s Alcohol and Drug Policy.  Employees and contractors will adhere to TC Energy’s Health, Safety and Environment Commitment Statement.  Onsite Orientations will include a discussion of respectful behaviour and interaction with neighbouring communities.  See mitigation to address the potential effects on Infrastructure and Services related demand on community services in Section 6.2.3. Residual Effect Yes No Following Mitigation With the application of mitigation measures, no residual effects for the disruption of community and landowners’ lives are predicted.

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HUMAN HEALTH AND AESTHETICS

Human health and aesthetics are important parts of a community dynamic. Human health largely relies on the quality of the environment and its sensory perception as aesthetics depends on the integration of the surrounding landscape. This VC was carried through because construction activities may change the existing environmental setting related to visual aesthetics (beauty) or other sensory conditions. Environmental elements associated with the Bromont and Saint-Basile Project components that may be related to Human Health include Water Quality and Quantity, Air Emissions, and Acoustic Environment. These elements have been reviewed to identify any potential effects to human health in Sections 6.1.2 Water Quality and Quantity, 6.1.8 Air and GHG Emissions and 6.1.9 Acoustic Environment. For this reason, no summary table of the mitigation measures and of the significance evaluation of potential residual effects is presented in this section. There are limited predicted interactions with human health during construction and operation, and with the implementation of regulatory requirements, industry best practice and identified mitigation measures, routine construction and operation activities are not likely to result in any residual effect for any of these elements that would pose a risk to human health. As provided in Table 5-1, potential effects associated with construction and operation of the Project on human health and aesthetics is the alteration of viewsheds. The potential alteration of viewsheds effect is applicable to the Bromont CS only. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Table 6-27.

Alteration of Viewsheds

During construction the visual quality of the landscape adjacent to the Bromont CS PDA may be adversely affected. Clearing of vegetation for the CS will be restricted to the PDA. The CS location was chosen in part to reduce the visibility of the project component. The construction of the Bromont CS will alter the landscape for local residents due to the presence of the new facility. The CS footprint will be located in a mostly wooded area, 497 m from the nearest residence and 660 m from the nearest road (Bergeron East Road). Table 6-27 Alteration of Viewsheds Project Phase Construction Operation Mitigation Measures  Notify potentially affected landowners, lessees and nearby residents of the intended Project schedule before the start of construction to avoid or reduce impacts to their operations or activities.  Restrict all construction activities to the approved construction footprint.  Follow measures outlined in the EPP for clean-up and reclamation.  Follow municipal requirements for development aesthetics, as required.  If deemed appropriate, complete a visual impact assessment of the site, and implement mitigation as required. Residual Effect Yes - Alteration of viewsheds No Following Mitigation: Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High Considering the proposed mitigation measures and the location of the CS footprint, the residual effect is considered to be low magnitude and reversible in the long-term. In addition, TQM is committed to ongoing communication with affected residents to ensure that any concerns are addressed and relationships are maintained.

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INFRASTRUCTURE AND SERVICES

Infrastructure and services provided to local populations through public and government funding and programs as well as infrastructure are in place to meet societal needs. It includes: public infrastructure (i.e. roads, schools, water or electricity distribution), emergency response (i.e. police, fire and medical), housing, accommodations, health and social services. This VC was carried through because construction activities might affect the local road circulation and the demands on local services and infrastructure such as accommodation, health and emergency services, policing and transportation. Construction activities have the potential to interact with infrastructure and services through, for example, the presence of a workforce in the community as well as use of local roads with personal vehicles and Project-related vehicles. No potential effects on infrastructure and services are anticipated during the operation phase of the Project. As provided in Table 5-1, potential effects associated with the construction of the Project on infrastructure and services are:  Increase in demands for accommodations and other community services during construction.  Increase in traffic volumes during construction. These potential effects are applicable to the Bromont CS and to a lesser extent the Saint-Basile Interconnect. A summary of the mitigation measures and the significance evaluation of potential residual effects is provided in Tables 6-28 and 6- 29.

Increase in Demands for Accommodation and Other Community Services

For both the Bromont CS and the Saint-Basile Interconnect, construction will require the workforce to be mobilized for a relatively short duration (about 18 months in Bromont and 4 to 5 weeks in Saint-Basile). The influx of workers will drive increased demand for temporary accommodation. Mobile workers are those who work outside of commuting distance of their home community. They might reside elsewhere in the RAA or in other regions. Mobile workers needed for the construction will increase demands on local accommodation. The short-term nature of both Project components’ construction phase will mostly drive demand for temporary accommodation, such as local campgrounds, hotels and motels. The RAA is expected to have sufficient capacity to accommodate Project-related construction workers. The Bromont CS and Saint-Basile Interconnect mobile workforce (approximately 50 workers on average and 200 at peak in Bromont and 15 to 20 workers in Saint-Basile), could also draw on local community services mainly located in the City of Bromont and the City of Saint-Basile-le-Grand respectively. This may include an increased demand on existing emergency, protective (i.e. police, fire, and ambulance), health care, and social services. In addition, project activities are expected to generate an increase in solid, liquid, and hazardous waste, which will be hauled to landfills, transfer stations, hazardous waste centres, and wastewater treatment facilities as applicable.

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Table 6-28 Increase in Demands for Accommodations and Other Community Services during Construction Project Phase Construction Operation Mitigation Measures  Inform all responsible federal and provincial resource agencies and interested municipal officials of the Project developments, as warranted.  Consult and coordinate with local authorities, service providers and businesses with respect to worker accommodation, as required.  Ensure all workers and visitors to the site participate in a safety orientation prior being allowed on-site.  Adhere to TC Energy’s Contractor Alcohol and Drug Policy.  Adhere to TC Energy’s Health, Safety and Environment Commitment Statement.  Provide first aid and medical services on site as per the regulatory requirements for Health and Safety.  The Contractor will collect all construction debris and other waste materials and dispose at an approved facility and in accordance with the Chemical and Waste Management Plan (EPP – Appendix 1F) and the Release Contingency Plan (EPP – Appendix 1E) unless otherwise authorized by the Environmental Inspector(s) or designate(s). Residual Effect Yes No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/ Short-term Medium-term Long-term Permanent Reversibility Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Considering mitigation measures and the Bromont CS and the Saint-Basile Interconnect’s relatively small workforce, short duration of construction and long hours of shift work that will limit community interaction, effects of the Project components on demands for accommodations and other community services are considered short-term and low in magnitude. A significant effect is not likely to occur.

Increase in Traffic Volumes

For both the Bromont CS and the Saint-Basile Interconnect, increased traffic during construction due to transportation of material, equipment and workers will occur over a relatively short duration (about 18 months in Bromont and 4 to 5 weeks in Saint-Basile). Long work shifts will reduce the pressure on infrastructure and services however project related traffic may disrupt existing traffic patterns, which may impact a limited number of motorists. No public road upgrades are required for the Project. Project-related traffic would be greatest approximately before 7 a.m. (start of shift) and after 5 p.m. (end of shift) and would occur near the entrance of the Bromont CS and Saint-Basile Interconnect PDAs, as well as other arterial roads and provincial highways.

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Table 6-29 Increase in Traffic Volumes during Construction Project Phase Construction Operation Mitigation Measures  Restrict all construction activities to the approved construction footprint. All Project-related vehicles will follow applicable traffic, road-use and safety laws.  The speed limit on the construction footprint will be designated by the Contractor. Speed limits may be lowered under specific conditions such as areas with poor visibility, steep terrain or areas where specific wildlife concerns have been identified.  Implement the Traffic Control Management Plan (EPP – Appendix 1F).  Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites. Residual Effect Yes No Following Mitigation Direction Positive Negative Neutral Magnitude Low Moderate High Geographic Extent PDA LAA RAA Duration/Reversibility Short-term Medium-term Long-term Permanent Reversible Irreversible Frequency Single event Multiple irregular Multiple regular Continuous Significance Not significant Significant Prediction confidence Low Moderate High

Considering the proposed mitigation measures, the residual effect is considered to be short-term, reversible and of low magnitude. A significant effect is not likely to occur.

EMPLOYMENT AND ECONOMY

Employment and economy refers to provincial, regional and local interactions between the community and companies through the means of employment, purchase, contracts as well as tax revenues. This VC was carried through because construction and operation activities will offer employment and business opportunities, and government tax revenues to the municipal, provincial and federal governments. There will be direct and indirect employment opportunities, including those directly related to construction (i.e. management and supervisory roles, inspection services, trades, semi-skilled and unskilled labour, security, health and safety positions) as well as those indirectly related to the Project, such as supplies, and goods and services. These opportunities are expected to extend into the LAAs and RAAs. Existing TQM resources are expected to be sufficient for operating the Project, with no anticipated workforce additions. As provided in Table 5-1, potential effect associated with the construction of the Project on infrastructure and services is the increase in employment and economy. This potential effect is applicable to the Bromont CS and Saint-Basile Interconnect components. No summary table of the mitigation measures and the significance evaluation of potential residual effects is required as the residual effects on employment and economy are expected to be positive in direction. During construction, both the Bromont CS and the Saint-Basile Interconnect components are expected to generate a demand for goods, services and workers, which in turn would generate taxable direct, indirect and induced business revenues and employment income. These revenues and income will generate federal and provincial tax revenues from taxes such as personal income taxes, Provincial Sales Tax (PST) and Goods and Services Sales Tax (GST), etc. Once operating, the Project components will pay municipal property tax revenues to the City of Bromont and the City of Saint- Basile-le-Grand. The residual effects on municipal, provincial and federal government revenues are expected to be of low magnitude and positive in direction.

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EFFECTS OF THE ENVIRONMENT ON THE PROJECT

Effects of the Environment on the Project are associated with risks of natural hazards and influences of nature on the Project. Typically, potential effects of the environment on any project are a function of that project or infrastructure design in the context of its receiving environment, and ultimately how it is affected by nature. These effects may arise from physical conditions, land forms, and site characteristics or other attributes of the environment which may act on a project such that its components, schedule, and/or costs could be substantively and adversely changed. All three components of the Project have the potential to interact with the Environment. The Project will employ best management and engineering practices and, as such, it will be designed to withstand extreme environmental conditions. These conditions may refer to the following:  Geological and hydrogeological hazards (earthquake, landslide, bank erosion and bed scour);  Severe weather including: o Heavy precipitation; o Extreme snow events and ice storms; o Lightning; o High winds; and o Floods.  Forest fires resulting from causes other than the Project. The environmental attributes listed above have the potential to affect the Project in several ways. For example, effects may include:  Reduced visibility and inability to manoeuver construction and operation equipment;  Delays in receipt of materials and/or supplies (i.e. construction materials, reagents) and/or in delivering products;  Changes to the ability of workers to access the site (i.e. if a road were to wash out);  Damage to above or below ground infrastructure;  Increased structural loading; and/or  Loss of electrical power resulting in potential loss of production. These and other changes to the Project by the environment are generally characterized as delays or damage to the Project processes, equipment, and vehicles. As a result, the effects analysis for Effects of the Environment on the Project is focused on the following effects:  Delays in Construction and/or Operation schedules; and  Damage to above or below ground infrastructure. As outlined in the introduction to this section, the Project will be designed in accordance with best management and engineering design practices. As a factor of safety, and a matter of responsible engineering practice, the design and materials to be chosen for construction of the Project will be selected so that it will withstand environmental stressors that could occur from various natural and environmental phenomena (i.e. extreme storms, increased precipitation and other factors arising from climate change, and others). Through proper planning, engineering design and construction practices, environmental stressors can be anticipated and managed within the receiving environment for all infrastructure and during all Project phases. Through application of mitigation measures—to be determined during detailed engineering and design—potential adverse effects of the environment on the Project are predicted to be not significant. Prediction confidence is high because of past project experience, application of best management practices and engineering design that meets or exceeds industry standards.

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CUMULATIVE EFFECTS

This cumulative effects assessment evaluates the likely adverse residual environmental and socio-economic effects directly associate with the Project in combination with the likely residual effects arising from other projects and activities that have been or will be carried out in the RAA. The potential likely adverse residual effects associated with the Project construction and operation on each VC are identified in Section 6.2. As per Guides A.2.6 and A.2.7 of the NEB Filing Manual, VCs included in the cumulative effects assessment should meet the following criteria:  The VC has a likely adverse environmental or socio-economic residual effect.  The residual effects could act cumulatively spatially and in time with likely residual effects of other physical projects or activities. Reasonably foreseeable Projects considered for the cumulative effects assessment were identified through the following organizations:  Ministère de l’Environnement et de la Lutte contre les changements climatiques (MELCC);  Commission de protection du territoire agricole du Québec (CPTAQ);  Bureau d’audiences publiques sur l’environnement;  Ministère des Transports du Québec;  Hydro-Québec; and  MRCs, cities, and municipalities met with during consultations. Past or existing physical activities, including agricultural activities, residential developments, infrastructure and energy network development (power lines, pipelines, roads) as well as commercial and industrial activities have affected various VCs within the RAA. There is evidence of human occupancy near the proposed PDAs (Bromont CS and Saint-Basile Interconnect). The Bromont CS and the Saint-Basile Interconnect will be entirely located on land zoned as designated agricultural land and does not encompass any areas that are zoned for urban development. Therefore the project does not directly interfere with reasonably foreseeable residential development. In terms of future projects, one reasonably foreseeable physical activity has been identified to have the potential to contribute to cumulative effects within the Bromont CS RAA, namely the Hydro-Québec Conversion of the Cleveland- Waterloo Line to 230 kV. This project will mainly be located within the LAA and passes through the PDA, crossing at the proposed access road. This project will involve rebuilding the line connecting Cleveland substation with the tap line to Waterloo substation at a voltage of 230 kV. The double‑circuit line will be approximately 12 km long and will initially be operated at 120 kV. Related work will also be necessary at Cleveland and Waterloo substations. This project is currently under study and construction is planned in 2020-2021 with commissioning in 2021, but a confirmed construction schedule for this project is not available (Hydro-Québec, 2019). Our understanding of the Hydro-Québec’s Conversion of the Cleveland-Waterloo Line to 230 kV project is that the work will occur within the existing power line ROW and at the Cleveland and Waterloo substations. The Énergir Delivery Station Project has also been identified to have a potential to contribute to cumulative effects with the Saint-Basile Interconnect. This project will involves the construction and operation of a new delivery station on the land shared with the Saint-Basile Interconnect. This new delivery point will serve the Énergir Montérégie region by redistributing a portion of the flow from TCPL’s existing Saint-Mathieu Meter Station. The following cumulative effects assessment applies to the Bromont CS and the Saint-Basile Interconnect considering that reasonably foreseeable physical activities has been identified to have the potential to contribute to cumulative effects for these Project components.

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VEGETATION

Vegetation, including SOMC, within the RAAs has been altered due to existing activities such as ongoing agriculture, forestry, pipeline operation and maintenance, and urban development. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on vegetation within the RAAs will act cumulatively with existing activities and disturbances, however, the magnitude is considered low due to the limited areal extent and mitigation measures. For the Bromont CS, the cumulative effect is considered reversible in the medium-term (TWS outside the buffer zone) to long-term (CS footprint and buffer zone). Therefore, a significant effect is not likely to occur. For the Saint-Basile Interconnect, the cumulative effect is considered reversible in the short-term (TWS) to long-term (Interconnect footprint). Therefore, a significant effect is not likely to occur.

WETLANDS

Wetlands, including SOMC specific to wetlands, within the Bromont CS RAA have been altered due to existing activities such as ongoing agriculture, forestry, pipeline operation and maintenance, and urban development. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on wetlands within the Bromont CS RAA will act cumulatively with existing activities and disturbances, however, the magnitude is considered low due to the limited areal extent and mitigation measures, including wetland compensation measures. The cumulative effect is considered reversible in the medium- term (Bromont CS TWS and buffer zone) to long-term (Bromont CS footprint). Therefore, a significant effect is not likely to occur.

WILDLIFE AND WILDLIFE HABITAT

Wildlife and wildlife habitat, including SOMC, within the RAAs has been altered due to existing activities such as ongoing agriculture, forestry, pipeline operation and maintenance, and urban development. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on wildlife and wildlife habitat within the RAAs will act cumulatively with existing activities and disturbances. However, the magnitude is considered low due to the limited areal extent and mitigation measures. For the Bromont CS, the cumulative effect is considered reversible in the short-term to medium-term (Bromont CS TWS outside the buffer zone) to long-term (Bromont CS footprint and buffer zone). A significant effect is not likely to occur. For the Saint-Basile Interconnect, the cumulative effect is considered reversible in the short-term (TWS) to long-term (Interconnect footprint). A significant effect is not likely to occur.

SPECIES AT RISK OR SPECIES OF SPECIAL STATUS

Refer to the Vegetation (Section 6.4.1) and Wildlife and Wildlife Habitat (Section 6.4.4) elements.

AIR AND GHG EMISSIONS

Air quality within the RAAs is generally good. Activities carried out within the RAAs have the potential to alter air quality through activities such as road traffic, agriculture, forestry and urban development. It is expected that operators of

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reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on air quality will act cumulatively with existing activities and disturbances, however, it is considered to be of low magnitude and reversible in the long-term. A significant effect is not likely to occur. Cumulative effects associated with the releases of GHGs are a global phenomenon. Given the residual effect of GHG emissions from the Project is not significant, the scale of the proposed Project, and the global nature of GHG cumulative effects, an assessment of the cumulative effects of GHG emissions, including the Project’s potential contribution to these effects, is beyond the scope of this assessment.

ACOUSTIC ENVIRONMENT

Ambient noise within the RAAs has the potential to be altered through activities such as road traffic, agriculture, forestry and urban development. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. For the Bromont CS, the cumulative sound level at the nearest receptors comply with relevant regulatory guidance after mitigation. The Noise Impact Assessment (Appendix C) and the assessment of effects on the Acoustic Environment (Section 6.1.9) completed for the Project are cumulative, and no further effects assessment is required.

HUMAN OCCUPANCY AND RESOURCE USE

Human occupancy and resource use within the RAAs has been altered due to existing activities such as ongoing agriculture, forestry, pipeline operation and maintenance, and urban development. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on Human occupancy and resource use will act cumulatively with existing activities and disturbances, however, it is considered to be of low magnitude and reversible in the long-term. A significant effect is not likely to occur.

HUMAN HEALTH AND AESTHETICS

Visual Aesthetics within the RAAs have been altered by existing activities such as ongoing agriculture, forestry, urban development, and existing linear infrastructure, such as power transmission lines and pipelines. It is expected that operators of reasonably foreseeable developments (i.e. Hydro-Québec, Énergir) will also implement mitigation measures developed in accordance with industry and provincial regulatory guidelines. The Project’s contribution to cumulative effects on Human Health and Aesthetics use will act cumulatively with existing activities and disturbances, however, it is considered to be of low magnitude and reversible in the long-term. A significant effect is not likely to occur.

INFRASTRUCTURE AND SERVICES

The Project’s effects relating to infrastructure and services in the RAAs are anticipated during construction only. Potential for cumulative effects on infrastructure and services can occur as a result of increased demands on accommodations, on community services and on transport infrastructure. The Project’s contribution to cumulative effects on infrastructure and services will act cumulatively with existing activities and disturbances, however, it is considered to be of low magnitude and reversible in the short-term. A significant effect is not likely to occur.

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7 INSPECTION, MONITORING AND FOLLOW-UP

The NEB Filing Manual (NEB, 2017) specifies the need for EPPs and programs to anticipate, prevent, mitigate and manage potentially adverse environmental effects over the life of a project. Inspection plans must be developed for compliance with biophysical and socio-economic commitments, as required by section 27 of the OPR. This is achieved through a detailed Project-specific EPP that demonstrates adequacy and effectiveness. A Project Specific EPP has been prepared for the Project. This EPP outlines environmental protection measures to avoid or reduce potential effects during construction of the Project. The EPP includes both general and site•specific environmental protection measures which have been developed based on past project experience, corporate standards, current industry best management practices, and input from stakeholders and regulators during public consultations, where applicable. The EPP will specifically:  Outline environmental protection measures related to Project activities;  Provide instructions for carrying out construction activities to reduce adverse environmental effects; and  Serve as reference information to construction staff and personnel to support decision-making and provide links to more detailed information. The following contingency plans will support the EPP:  Release Contingency Plan;  Adverse Weather Contingency Plan;  Flood and Excessive Flow Contingency Plan;  Wet Soils Contingency Plan;  Fire Suppression Contingency Plan;  Soil Handling Contingency Plan;  Soil Erosion Contingency Plan;  Contaminated Soils Contingency Plan;  Plant Species and Ecological Communities of Concern Discovery Contingency Plan;  Wildlife Species of Concern Discovery Contingency Plan; and  Cultural Resource Discovery Contingency Plan. Additionally, the following Management plans support the EPP:  Chemical and Waste Management Plan;  Traffic Control Management Plan;  Hydrovac Slurry Handling Management Plan;  Breeding Bird and Nest Management Plan; and  Access Management Plan.

ENVIRONMENTAL INSPECTION

Environmental inspection will occur during construction by an Environmental Inspector (EI) or designate that will be on- site to monitor activities for compliance with regulatory commitments and mitigation measures as outlined in the EPP. The main responsibility of the EI or designate will be to ensure that all environmental commitments, undertakings and conditions of authorizations are met and that work is completed in compliance with applicable environmental regulations and Company policies, procedures and specifications in the most efficient and effective way possible. The EPP describes further the responsibilities and required qualifications of the EI or designate.

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The EI or designate will become familiar with the Project specific documentation before the start of construction, support environmental orientation for other construction staff, and will review environmentally sensitive aspects of the Project prior to construction. During construction, the EI or designate will monitor Project activities and mitigation measures implemented and prepare daily reports documenting activities and conditions. Where mitigation measures are found to be insufficient, the EI or designate in consultation with the Construction Manager or the Environmental Advisor will identify the appropriate action/measures and initiate a change in procedure accordingly with the change management procedure outlined in the EPP. The EI or designate will be assisted, where required, by a multidisciplinary team of environmental resource specialists.

ENVIRONMENTAL FOLLOW-UP AND MONITORING

The post construction monitoring program will be initiated at the end of the construction phase and will extend to the end of the first full growing season after final clean-up, or as required based on regulatory requirements.

ENVIRONMENTAL COMPLIANCE DURING OPERATIONS

TQM’s commitment of avoiding or reducing environmental effects will continue into the operations as well as the decommissioning and abandonment phases of the Project. TC Energy’s Operational Management System will be applied throughout the life of the Project, including operations. Priorities for TC Energy’s Environmental Specialists in assimilating the Project into their routine operations will ensure that any specific commitments made in the regulatory approvals are followed through and will ensure that follow-up recommendations made in the post construction monitoring program is addressed, particularly with respect to any unresolved issues. Operations and maintenance procedures contain the day-to-day procedures for a safe and efficient operation and maintenance of all Project components, and include general reference information as well as safety and emergency response procedures.

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8 ACCIDENTS AND MALFUNCTIONS

The effects of accidents and malfunctions with the potential to occur during Project construction and operation are considered in accordance with the NEB Filing Manual (NEB, 2017). Accidents and malfunctions are unplanned events not part of routine Project activities during any Project phase. These could occur as a result of abnormal operating conditions, wear and tear, acts of nature, extreme weather events, human error, equipment failure, and other possible causes. However, many accidents and malfunctions are preventable, and can be readily addressed or prevented by good planning, design, equipment selection and maintenance, hazard analysis and corrective action, emergency response planning, and mitigation. Accidents and malfunctions could result in adverse effects on human health, property, or the environment. While Accidents and Malfunctions are predicted to be unlikely for all Project activities, the potential consequences are evaluated so emergency response and contingency planning can be identified to mitigate risk. Accidents and Malfunction has the potential to interact with all three Project components. The Project will be designed, constructed and operated in a manner that prevents and reduces potential hazards and risks to the safety and security of the public, employees, property, TQM facilities and the environment. As mentioned in Section 3 of this document, TCPL, on behalf of TQM, will operate the Project in accordance with all applicable legislation, codes and standards, including the NEB’s OPR and CSA Z662-19: Oil and Gas Pipeline Systems, and approval conditions. The TC Energy OCC in Calgary monitors and controls TQM System operations. TCPL applies TC Energy corporate policies and operating procedures in its operations of the TQM System that are common to TCPL's operation of other TC Energy federally regulated pipelines. Through selecting and implementing construction materials and methods that meet or exceed applicable industry standards and regulatory requirements (i.e., legislation, codes, standards, and conditions of approval) and TC Energy’s Standards and Specifications, TQM’s projects are designed and constructed in a manner that reduces the risk of accidents and malfunctions from occurring. Similarly, the risk of an unplanned event occurring during construction and operations is reduced through implementing TC Energy’s Corporate Security Policy, and is also reduced during operations by implementing TC Energy’s Damage Prevention and Integrity Management Programs. The potential accidents and malfunctions during construction and operation are as follows:  Process upset;  Fire;  Hazardous materials and contaminant release;  Vehicle accident; and  Damage to existing pipelines and/or facilities. Accidents, malfunctions and unplanned event scenarios that could affect specific VCs are outlined in Table 8-1.

Table 8-1 Potential Interactions Between VCs and Accidents, Malfunctions and Unplanned Events Process Hazardous Vehicle Valued Component Fire Damage Upset Materials Release Accident Soil capability –   – – Vegetation    – – Wetlands    – – Water quality and quantity – –  – – Fish and fish habitat – –  – – Wildlife and wildlife habitat     – Atmospheric environment   – –  Acoustic environment – – – – – Human occupancy and resource use    – 

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Table 8-1 Potential Interactions Between VCs and Accidents, Malfunctions and Unplanned Events Process Hazardous Vehicle Valued Component Fire Damage Upset Materials Release Accident Heritage resources – – – – – Navigation and navigation safety – – – – – Traditional land and resource use – – – – – Social and cultural well-being – – – – – Human health and aesthetics   –  – Infrastructure and services –  –   Employment and economy – – – – –

In the unlikely event of an accident or malfunction, such unplanned events are effectively managed through implementing contingency measures during construction from the Project-specific EPPs, as well as through implementing the Project-Specific Emergency Response Plans, and during operations through TC Energy’s overarching Emergency Management Corporate Program Manual, emergency shut down, and facility isolation procedures that limit the potential for and volume of a release.

PROCESS UPSET

Process upsets are defined as any malfunction or unplanned event that occurs outside the realm of normal operations. Process upsets include, but are not limited to, mechanical breakdown of process equipment, and power interruptions. Commissioning activity could result in short-term process upsets as well, which would be similar in magnitude, extent and duration to process upsets that occur during operation. The likelihood of occurrence of process upset will be considerably reduced as the Project will comply with design, construction and operation standards and regulatory requirements. The potential effects would vary based on the extent of leakage or rupture, and the ignition or not of the natural gas and explosion. Gas leakage would result in an effect on air quality, but the released natural gas will disperse quickly in the atmosphere. Indeed, since natural gas is lighter than air, natural gas escaping as a result of an accident or malfunction would dissipate to the atmosphere with limited potential to affect the surrounding environment. Natural gas is also considered non-toxic and has low solubility in water, and the proposed Project will transport and compress sweet natural gas that meets TC Energy’s Gas Quality Specifications outlined in its tariff. Although the probability of an explosion or fire event is considered unlikely and infrequent, in such event, residual effects may be expected to occur on vegetation, wetlands, wildlife habitat, air quality, human occupancy and resource use, and human health and aesthetics. The implementation of the following mitigation measures reduces the likelihood and repercussions of such events:  The Project will be designed, constructed and operated in order to meet or exceed applicable industry standards and regulatory requirements.  The design of facilities includes OPP and the ability to be remotely monitored 24/7. These measures reduce the potential for an unplanned natural gas release at our facilities.  During construction, contingency measures presented in the Project-Specific EPP and Emergency Response Plan will be implemented.  An Integrity Management Program, Damage Prevention Program and Corporate Security Policy will be implemented to protect and maintain reliability of the new asset, thereby reducing the potential for adverse environmental effects, and protecting property, the safety of employees and the public.  In the unlikely event of an accident or malfunction during operations, TC Energy will implement its overarching Emergency Management Corporate Program Manual as well as contingency measures such as emergency shut down and facility isolation procedures to limit the potential for a volume of a release.

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Despite the implementation of these mitigation measures, it is still possible that a process upset could occur, but it would be infrequent and unlikely. However, if it occurs, the process would be quickly shut down to address the issue, and residual effects, as a result, would be low to high magnitude, local to regional in extent, and short to long-term in duration. With implementation of preventative and response measures, the effects of a process upset on the environment is predicted to be not significant.

FIRE

Tree cutting activities will be limited to the Bromont CS PDA and there will be no burning of brush. Therefore, accidental fire caused by burning activities is unlikely to occur. Storage of combustible material or waste at work sites or dry conditions could lead to an unintentional fire during Project construction or operation. The effects include potential for alteration of soil capacity, vegetation, wetlands, wildlife habitat, land and resource use, human health and aesthetics, increase in demand for emergency and protective services, as well as a change of air quality. The implementation of the fire-prevention measures and brush disposal methods as indicated in the EPP will reduce the likelihood of a fire occurring as a result of the Project. During construction and operation the following mitigation measures will be applied:  Ensure that personnel are made aware of the proper disposal methods for welding rods, cigarette butts and other hot or burning material.  Smoke only in designated areas.  Ensure the Contractor has the necessary firefighting equipment on hand that is capable of controlling any fire that may occur as a result of their activities, as identified by provincial regulations and responsible government agencies.  In the event of a fire or fire hazard conditions, follow the measures outlined in the Fire Suppression Contingency Plan. Despite the implementation of these mitigation measures, it is still possible that an accidental fire occurs, but would be infrequent and contained. A large fire could result in particulate matter levels greater than the ambient air quality standard over several km, but such fires would be infrequent and are not expected to occur because of the limited nature of the Project. Although this predicted residual effect is unlikely, if it occurs, it would result in residual effects that are considered of low to high magnitude, local to regional in extent, and short to medium-term in duration. With implementation of preventative and response measures, the effects of a fire on the environment are predicted to be not significant.

HAZARDOUS MATERIALS AND CONTAMINANT RELEASE

Improper handling, use or storage of hazardous materials could result in a release. Accidental spills of hazardous material and contaminants are mainly associated with the following activities during construction and operation:  Equipment maintenance;  Fuelling activities;  Fuel storage; and  Engine or transformer leaks/failure or hydraulic hose breakage. Accidental spills are generally less than a few litres, limited to a small area and rapidly controlled and cleaned up by on- site teams with appropriate material and equipment. In the event of a large release, contamination could affect soil, vegetation, wetlands, groundwater, fish and fish habitat, wildlife habitat and local land use. Preventing spills of hazardous materials and contaminants is a top priority for TCPL, along with response training and site remediation, in case of discharge. A Chemical and Waste Management Plan is part of the EPP and presents spill prevention measures for all staff and contractors. This plan provides environmental guidelines for purchasing, handling,

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storing and disposal of chemical products and waste. Implementing this plan will reduce the probability of potentially hazardous material spills in the environment. In the event of a spill or leak, TCPL will implement the Release contingency plan included in the EPP which describes the notification requirements, general measures, and procedures for initial response, containment, recovering of the spilled product and clean-up of the contaminated area. TQM confirms that emergency management during Project construction will be governed by the Project-specific Emergency Response Plan, and during operations by TC Energy’s overarching Emergency Management Corporate Program Manual and related operating procedures. As part of Project consultation activities TQM provides information concerning Emergency Preparedness and Response to potentially affected stakeholders and landowners, and TC Energy publishes its Emergency Management Corporate Program Manual in accordance with NEB Order MO-002-2017. In the event of an emergency TC Energy’s Emergency Response process would be activated. TCPL employees and contractors receive training for emergency events and if there is an incident, will work closely with landowners and impacted persons or groups, as well as authorities and emergency responders to manage the incident. Potential residual effects due to an accidental spill or leak of hydrocarbon liquids would vary accordingly with the extent of the spill (volume and area), nature of the substance, affected biophysical element and response and clean-up activities. If a hazardous material release results in the contamination of soil, vegetation, wetlands, groundwater, fish and fish habitat, wildlife habitat, site assessment and remediation may be required. The potential occurrence of a release is expected to be infrequent, limited in volume and area, and can be cleaned up by on-site crews using standard equipment. However, if it occurs, it would result in residual effects that are considered short to medium-term in duration, local, and of low to high magnitude. With the implementation of preventative and response measures, the residual effects of a release on VCs considered in this assessment are predicted to be not significant.

VEHICLE ACCIDENT

A vehicle accident could potentially occur during all phases of the Project, resulting in a need for support from local emergency services. During construction, worker traffic and truck traffic to and from the site, and the operation of construction equipment on-site have the potential to result in a vehicle accident. During operation vehicle accident opportunities are significantly reduced and associated with operations and maintenance activities. A vehicle accident could result in increased mortality of wildlife species, including SAR and other wildlife SOMC as well as potential effects to human health. An accident may require support from local emergency services. It is possible that during construction, vehicle accidents happen. To limit the extent of such event, all construction activities will be restricted to the approved construction footprint and all construction traffic will adhere to safety and road closure regulations. Project personnel and Project-related vehicles will observe all traffic rules and local, provincial and federal highway regulations. Trucking activity for construction of the Project will take place on designated truck routes and observe speed limits and weight restrictions, and will adhere to the measures set out in the Project EPP. The speed limit on the construction footprint will be determined by the Contractor. Speed limits may be lowered under specific conditions such as areas with poor visibility, steep terrain or areas where specific wildlife concerns have been identified. Contractors and subcontractors will have to have a drug and alcohol program in place. Additionally, TC Energy policies prohibit distracted driving by all Project-related vehicle operators. In the event of a vehicle accident, onsite emergency response personnel would coordinate with local emergency service providers. The occurrence of a vehicle accident is expected to be infrequent, but would be more likely during the construction phase due to increased vehicle traffic and personnel movement. The Project will comply with applicable traffic rules and regulations and with TQM policies and procedures for traffic management and emergency response. Although this predicted residual effect is unlikely, if it occurs, it would result in residual effects that are considered short term in duration, local, and of low to moderate magnitude. With implementation of preventative and response measures, the residual effects of a vehicle accident on VCs considered in this assessment are predicted to be not significant.

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DAMAGE TO EXISTING PIPELINES AND/OR FACILITIES

To minimize the potential of damage to existing pipelines, facilities and others, all foreign lines and cables will be marked and located within the PDA using utility locate services (Info-Excavation) before the start of construction. Moreover, excavation activities will be performed in accordance to TC Energy’s operating procedures to reduce the potential for pipeline damage. In the event of damage to existing infrastructure, Project personnel will contact the appropriate emergency contacts, which will be listed in the Project’s Site-Specific Safety Plan. Damage to existing pipelines and facilities, or foreign utilities is unlikely due to the implementation of mitigation measures such as TC Energy’s Ground Disturbance Policy, site planning, and use of Québec’s Info-Excavation service, and due to the limited nature of the Project. Although this predicted residual effect is unlikely, if it occurs, it would result in residual effects that are considered short term in duration and of low to high magnitude. With implementation of preventative and response measures, residual effects of gas release and damage to existing pipelines, facilities, and/or foreign utilities are not anticipated to be significant.

SUMMARY OF ACCIDENTS AND MALFUNCTIONS

The Project will be designed, constructed and operated in a manner that prevents and reduces potential hazards and risks to the safety and security of the public, employees, property, TQM facilities and the environment. Through selecting and implementing construction materials and methods that meet or exceed applicable industry standards and regulatory requirements (i.e., legislation, codes, standards, and conditions of approval) and TC Energy’s Standards and Specifications, TQM’s projects are designed and constructed in a manner that reduces the risk of accidents and malfunctions from occurring. Similarly, the risk of an unplanned event occurring during construction and operations is reduced through implementing TC Energy’s Corporate Security Policy, and is also reduced during operations by implementing TC Energy’s Damage Prevention and Integrity Management Programs. In the unlikely event of an accident or malfunction, such unplanned events are effectively managed through implementing contingency measures during construction from the Project-specific EPPs, as well as through implementing the Project-Specific Emergency Response Plans, and during operations through TC Energy’s overarching Emergency Management Corporate Program Manual, emergency shut down, and facility isolation procedures that limit the potential for and volume of a release. Additionally, since natural gas is lighter than air, natural gas escaping as a result of an accident or malfunction would dissipate to the atmosphere with limited potential to affect the surrounding environment. Natural gas is also considered non-toxic and has low solubility in water, and the proposed Project will transport sweet natural gas that meets TC Energy’s Gas Quality Specifications outlined in its Tariff, General Terms and Conditions, Article 3, Gas Quality.

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9 SUMMARY

TQM is applying to the NEB in order to approve the construction and operation of a CS in Bromont, the purchase of the Sabrevois Assets, and the construction and operation of an interconnection in Saint-Basile-le-Grand under sections 52, 58 and 74 of NEB Act. The engagement undertaken by TQM was designed and conducted in accordance with community relations best practices, and guidance provided in the NEB Filing Manual (NEB, 2017). Public consultation and engagement were thus performed to inform potentially affected parties about the Project and to understand concerns or issues that may arise from the proposed development. The Project is specifically aimed at meeting existing contractual obligations in the Énergir EDA, ensuring security of supply for the TQM System and providing a long-term facility solution to manage increasing loads and distribution shifts on TQM and Énergir’s Montérégie and Estrie regions. The Project is the result of a collaborative facilities planning effort between TQM, Énergir and TCPL, and results in the lowest cost facility solution while also enhancing security of supply for the province of Québec. The biophysical VCs identified for the Project are Soil and Soil Productivity, Water Quality and Quantity, Fish and Fish Habitat, Vegetation, Wetlands, Wildlife and Wildlife Habitat, Air and GHG Emissions and the Acoustic Environment. The socio-economic VCs are Human Occupancy and Resource Use, Social and Cultural Well-being, Human Health and Aesthetics, Infrastructure and Services as well as Employment and Economy. The potential Project-related effects were identified and assessed for each of the above VCs. Mitigation measures were then identified and residual effects remaining following mitigation were assessed. Residual effects from Project construction are anticipated on Vegetation, Wetlands, Wildlife and Wildlife Habitat, Air and GHG Emissions, Acoustic Environment, as well as Human Occupancy and Resource Use, Human Health and Aesthetics and Infrastructure and Services. Residual effects from construction on Air and GHG emissions, Acoustic Environment and Infrastructure and Services are mostly related to functioning vehicles, construction equipment fleet and related traffic. Residual effects on Vegetation, Wetlands, Wildlife and Wildlife Habitat, Human Occupancy and Resource Use as well as Human Health and Aesthetics are related to loss, alteration or disturbance of the VC. Considering the mitigation measures implemented, no significant effects are predicted for the Project construction. During Project construction, low magnitude positive effects on Employment and Economy are also expected (employment and business opportunities). During Project operation, residual effects are anticipated on Wildlife and Wildlife Habitat, Air and GHG emissions, and the Acoustic Environment. However, air contaminant emissions as well as noise levels will comply with regulatory thresholds and the residual effects are thus considered not to be significant. During operation, the Project will pay municipal property tax revenues to the cities of Bromont and Saint-Basile-le-Grand. No significant cumulative effects are anticipated. The Project’s contribution to cumulative effects on Vegetation and Wetlands, Wildlife and Wildlife Habitat, Human Occupancy and Resource Use, as well as Human Health and Aesthetics within the RAA will act cumulatively with existing activities and disturbances, however, the magnitude is considered low due to the limited areal extent and mitigation measures. The Bromont CS component operation will contribute cumulatively to the overall Air and GHG Emissions and the Acoustic Environment of the local area. However, design and mitigation measures will ensure compliance with regulatory thresholds, and thus cumulative effects from Air and GHG Emissions as well as on the Acoustic Environment are not considered significant. A Project Specific EPP has been prepared for the Project and will be applied during Project construction. The post construction monitoring program will be initiated at the end of the construction phase and will extend to the end of the first full growing season after final clean-up, or as required based on regulatory requirements.

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Many safety measures are integrated in the design, construction, and operation of the Project in order to reduce the risk of accidents and malfunctions. TQM is committed to meet applicable standards and codes, and industry best practices for safety during design, construction and operation. In the unlikely event of an accident or malfunction during construction, such unplanned events are effectively managed through implementing the Project-Specific Emergency Response Plans, and during operations through TC Energy’s overarching Emergency Management Corporate Program Manual, emergency shut down, and facility isolation procedures.

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10 REFERENCES

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Gérardin, V. and D. McKenney, 2001. Contribution du Service de la cartographie écologique, n° 60. Une classification climatique du Québec à partir de modèles de distribution spatiale de données climatiques mensuelles : vers une définition des bioclimats du Québec. Québec, Ministère de l’Environnement, Direction du patrimoine écologique et du développement durable, 40 p. Gosselin, 2007. Guide de reconnaissance des types écologiques de la région écologique 2c - Coteaux de l'Estrie, ministère des Ressources naturelles et de la Faune, Forêt Québec, Direction des inventaires forestiers, Division de la classification écologique et productivité des stations. Government of Québec, 2012. 2013-2020. Government Strategy for Climate Change Adaptation. A collective effort to strengthen the resilience of Québec society. Quebec in Action. Greener by 2020. Government of Québec, 2019. Hôpital de Granby. Available online: http://www.sante.gouv.qc.ca/repertoire- ressources/ressource/?nofiche=1135 Government of Québec, n.d.a Hôpital Charles-Le Moyne. Available online : https://santemonteregie.qc.ca/en/installations/hopital-charles-le-moyne Government of Québec, n.d.b Hôpital Pierre-Boucher. Available online : https://santemonteregie.qc.ca/installations/hopital-pierre-boucher Hydro-Québec, 2019. Conversion of the Cleveland-Waterloo Line to 230 kV. Available online: https://www.hydroquebec.com/projects/cleveland-waterloo-line/ Important Bird Areas Canada (IBA Canada), 2018. IBA Database provided by Bird Studies Canada and Nature Canada. Info-sols, 2019. Information géographiques sur les terres agricoles. Available online : http://www.info-sols.ca/carte.php Karlen, D.L., 2005. Productivity. Encyclopedia of Soils in the Environment. Reference Module in Earth Systems and Environmental Sciences. Available online: https://www.sciencedirect.com/science/article/pii/B0123485304002411. McGill University, 2019. Water is Life! Available online: https://www.mcgill.ca/waterislife/. Ministère de la Culture et des Communications (MCC), 2019a. Database extraction within a 6.5 km radius within the study area (Bromont). Inventaire des sites archéologique du Québec (ISAQ). Ministère de la Culture et des Communications, 2019b (MCC). Database extraction within a 6.5 km radius within the study area (Saint-Basile). Inventaire des sites archéologique du Québec (ISAQ). Ministère de l’Agriculture, des Pêcheries et de l’Alimentation du Québec (MAPAQ), 1998–2006. Cartes pédologiques: digital data. Institut de recherche et de développement en agroenvironnement (IRDA). Digitization scale: 1 / 20 000, digitization year: 1998-2006. Original scale: 1 / 63 360 except Portneuf: 1 / 50 000. Multiple sheets. Ministère de l’Énergie et des Ressources naturelles (MERN), 2007-2017. La base de données topographique du Québec à l’échelle de 1/20 000 (BDTQ 20k). Available online: http://geoboutique.mern.gouv.qc.ca/edel/pages/recherche/critereRechercheEdel.faces Ministère de l’Énergie et des Ressources naturelles (MERN), 2017. Les grands ensembles géologiques du Québec. Available online: https://mern.gouv.qc.ca/mines/geologie/geologie-apercu.jsp Ministère de l’Environnement et de la Lutte contre les changements climatiques du Québec (MELCC), 2015. Système d'information hydrogéologique (SIH). Available online: http://www.sih.mddep.gouv.qc.ca/index.html Ministère de l’Environnement et de la Lutte contre les changements climatiques (MELCC), 2017. Répertoire des terrains contaminés Available online : http://www.environnement.gouv.qc.ca/sol/terrains/terrains- contamines/recherche.asp Ministère de l’Environnement et de la Lutte contre les changements climatiques de Québec (MELCC), 2018. Portrait statistique : smog. Available Online : http://www.mddelcc.gouv.qc.ca/air/info-smog/portrait/index.htm Ministère de l’Environnement et de la Lutte contre les changements climatiques (MELCC), 2019a. Registre des aires protégées. Carte interactive. Available online : environnement.gouv.qc.ca/biodiversite/aires_protegees/carte- interactive.htm.

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Ministère de l’Environnement et de la Lutte contre les changements climatiques du Québec (MELCC), 2019b. Statistiques sur l’indice de la qualité de l’air 2004-2017. MELCC. Available online: http://www.environnement.gouv.qc.ca/air/iqa/statistiques/index.htm Ministère des Affaires municipales et de l’Occupation du Territoire (MAMOT), 2017. Profil financier Édition 2017- Bromont. Available online: https://www.mamh.gouv.qc.ca/fileadmin/publications/finances_indicateurs_fiscalite/information_financiere/pr ofil_financier/2017/PF201746078.pdf Ministère des Forêts, de la Faune et des Parcs (MFFP) 2017. Couches écoforestière du Québec méridional. Available online : geoegl.msp.gouv.qc.ca/igo/mffpecofor/ Ministère des Forêts, de la Faune et des Parcs du Québec (MFFP), 2018a. Banque de données des résultats de pêches expérimentales- ‘’Feuilles de pêche’’- données de 1928 à 2017. Direction de la gestion de la faune de l’Estrie, de Montréal, de la Montérégie et de Laval. ~ 270 000 enregistrements. Ministère des Forêts, de la Faune et des Parcs (MFFP), 2018b. Liste des espèces désignées menacées ou vulnérables au Québec et Liste des espèces fauniques susceptibles d’être désignées menacées ou vulnérables. Available online: http://www3.mffp.gouv.qc.ca/faune/especes/menacees/liste.asp Ministère des Forêts, de la Faune et des Parcs, 2019. Évaluation de la qualité des habitats. Available online: https://mffp.gouv.qc.ca/faune/habitats-fauniques/evaluation-qualite.jsp Accessed August, 2018. Ministère des Transports, Mobilité durable et Électrification des transports (MTMDET), 2019. Débit de circulation Available online: https://geoegl.msp.gouv.qc.ca/igo2/apercu- qc/?context=mtq&visiblelayers=circulation_routier Ministère du Développement durable, de l’Environnement et de la Lutte contre les changements climatiques du Québec (MDDELCC), 2017. Aires protégées au Québec, Les provinces naturelles – Province A – Les Appalaches. Available online: http://www.mddelcc.gouv.qc.ca/biodiversite/aires_protegees/provinces/partie4a.htm Ministère du Développement durable, de l’Environnement et des Parcs (MDDEP), 2008. État de l’écosystème aquatique – Bassin versant de la rivière Yamaska. Available online: http://www.mddep.gouv.qc.ca/eau/bassinversant/bassins/yamaska/FS_Yamaska.pdf MRC Brome-Missisquoi, 2018. Schéma d’aménagement et développement révisé. Available online: https://mrcbm.qc.ca/fr/docu_reglement.php#schema_amen MRC Brome-Missisquoi, 2019. Documentation - Population et superficie. Available online: https://mrcbm.qc.ca/fr/docu_population.php MRC de La Haute-Yamaska, 2014. Schéma d’aménagement révisé, 4e remplacement. Available online: http://www.haute-yamaska.ca/documents/07_Schema_amenagement_revise/14_- _Version_refondue_du_schema_sans_plan_pour_site_web.pdf MRC de la Vallée-du-Richelieu, 2007. Schéma d’aménagement révisé. Available online: http://www.mrcvr.ca/territoire_amenagement.php?menu2=2 MRC de la Vallée-du-Richelieu, 2016. Synthèse des grandes affectations du territoire. Available online: http://www.mrcvr.ca/images_upload/file/Amenagement-pdf/Carte_affectations_du_sol2017.pdf MRC de la Vallée-du-Richelieu, 2019. Localisation des cours d’eau. Demande 32502-201. National Energy Board (NEB), 1998. Comprehensive Study Report – Trans Québec & Maritimes Pipeline Inc. – PNGTS Extension. GH-1-97, February 1998. National Energy Board (NEB), 2017. Filling Manual. 140 p. + appendix. Available online: neb- one.gc.ca/bts/ctrg/gnnb/flngmnl/nsrt/2017-01nsrt-eng.pdf Natural Resources Canada (NRC), 2016. Earthquake zones in Eastern Canada. Available online: http://www.seismescanada.rncan.gc.ca/zones/eastcan-en.php#LSLSZ Organisme de bassin versant de la Yamaska, 2012. Portrait du bassin versant. Available online: http://www.obv- yamaska.qc.ca/portrait-du-bassin-versant

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Ouranos, 2011. L’influence des changements climatiques sur la qualité de l’air. Rapport préparé par Marie-France Sottile pour le ministère du Développement durable, de l’Environnement et des Parcs du Québec. Available online: http://www.environnement.gouv.qc.ca/climat/surveillance/Rapport_Ouranos.pdf. Accessed August 2019. Prescott, J., Richard, P., 1982. Mammifère du Québec et de l’est du Canada. Éditions France-Amérique. ISBN2-89001- 123-2. 199 p. SNC-Lavalin, 2019. Estimation des émissions atmosphériques, nouvelle station de compression à Bromont SOS-POP, 2018. Banque de données sur les populations d'oiseaux en situation précaire au Québec [version du 24 mai 2018]. Regroupement QuébecOiseaux, Montréal, Québec. Statistics Canada, 2017. Census Profile. 2016 Census. Statistics Canada Catalogue no. 98-316-X2016001. Ottawa. Released February 8, 2017.Available online: https://www12.statcan.gc.ca/census-recensement/2016/dp- pd/prof/index.cfm?Lang=E Sweeney, B.W., Bott, T.L., Jackson, J.K., Kaplan, L.A., Newbold, J.D., Standley, L.J., Hession, W.C., Horwitz, R.J., 2004. Riparian deforestation, stream narrowing, and loss of stream ecosystem services. Johns Hopkins University. Available online: https://www.pnas.org/content/101/39/14132. Tourisme Bromont, n.d. Tourisme Bromont. Available online: https://tourismebromont.com/en/ (consulted 05-30-2019) Treasury Board of Canada Secretariat. 2018. Federal Contaminated Sites Inventory – Open Datasets. Available online: https://www.tbs-sct.gc.ca/fcsi-rscf/opendata-eng.aspx Vélo Québec, 2017. Rapport de comptage 2017. Available online: https://www.routeverte.com/content/uploads/2018/11/Rapport_de_comptage_2017_web.pdf Vélo Québec, 2018. La route verte. Available online : https://www.routeverte.com/en/discover/?carte=https://carte.routeverte.com/rv/?locale=en Ville de Bromont, 2014a. Histoire. Available online: https://www.bromont.net/choisir-bromont/histoire/ Ville de Bromont, 2014b. Service de police. Available online: https://www.bromont.net/services-aux-citoyens/service- police/ Ville de Bromont, 2014c. Service des incendies. Available online: https://www.bromont.net/services-aux- citoyens/service-des-incendies Weis, T., 2013. The Ecological Hoofprint: The Global Burden of Industrial Livestock. Zed Books. 188 pages. WSP, 2019. Étude environnementale prévisionnelle, Nouvelle station de compression de Gazoduc TQM, à Bromont

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