ENVIRONMENTAL PROTECTION PLAN FOR THE PROPOSED NOVA GAS TRANSMISSION LTD. 2021 NGTL SYSTEM EXPANSION PROJECT SECTION 58 FACILITIES AND ACTIVITIES

July 2020

Note: This EPP applies to Forested and Agricultural Area projects. It includes both frozen and non-frozen mitigation measures, and across multiple land uses.

NOVA Gas Transmission Ltd.

A Wholly Owned Subsidiary of TransCanada PipeLines Limited, an affiliate of TC Energy Corporation Calgary, Alberta

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

TABLE OF CONTENTS Page 1.0 INTRODUCTION ...... 1 1.1 Section 58 Components ...... 1 1.2 Scope of the EPP ...... 1 2.0 PURPOSE ...... 3 3.0 ENVIRONMENTAL PROTECTION PLAN ORGANIZATION ...... 4 3.1 Organization ...... 4 3.2 Environmental Setting ...... 5 3.3 Extent and Limits of the Environmental Protection Plan ...... 6 4.0 ENVIRONMENTAL COMPLIANCE ...... 13 5.0 NOTIFICATION ...... 18 6.0 CONSTRUCTION PREPARATION ...... 19 7.0 PROJECT-SPECIFIC ENVIRONMENTAL PROTECTION MEASURES ...... 20 8.0 PROJECT CONSTRUCTION ...... 33 8.1 General Environmental Protection Measures ...... 33 8.2 Clearing and Vegetation Removal ...... 41 8.3 Topsoil/Strippings Salvage and Grading ...... 44 8.4 Watercourse Crossings ...... 47 8.5 Pipe Activities (Trenching, Stringing, Bending, Coating, Lowering-In) ...... 55 8.6 Backfill ...... 57 8.7 Hydrostatic Testing ...... 59 8.8 Clean-Up and Reclamation ...... 60 9.0 POST-CONSTRUCTION MONITORING ...... 65 10.0 REFERENCES ...... 67

LIST OF APPENDICES APPENDIX 1A EMERGENCY CONTACTS APPENDIX 1B CONTACTS APPENDIX 1C ALBERTA STANDARD PERMIT LIST APPENDIX 1D TYPICAL DRAWINGS APPENDIX 1E CONTINGENCY PLANS APPENDIX 1F MANAGEMENT PLANS APPENDIX 1G REGULATIONS, GUIDELINES AND INDUSTRY BEST PRACTICES

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

TABLE OF CONTENTS (cont’) Page

LIST OF FIGURES Figure 1a: Section 58 Facilities and Activities Valhalla and Elmworth Sections ...... 7 Figure 1b: Section 58 Facilities and Activities Karr and Deep Valley Sections ...... 8 Figure 1c: Section 58 Facilities and Activities Deep Valley and Colt Sections ...... 9 Figure 1d: Section 58 Facilities and Activities Robb and Dismal Creek Section ...... 10 Figure 1e: Section 58 Facilities and Activities Brewster Section ...... 11 Figure 1f: Section 58 Facilities and Activities Beiseker and Didsbury ...... 12

LIST OF TABLES TABLE 1: SECTION 58 COMPONENTS-SPECIFIC MITIGATION MEASURES ...... 21 TABLE 2: SUMMARY OF WATERCOURSE CROSSINGS ...... 54

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

1.0 INTRODUCTION This Environmental Protection Plan (EPP) outlines environmental protection measures to avoid or reduce potential adverse effects during construction and post-construction reclamation phases of the Section 58 facilities and activities specific to the 2021 System Expansion Project (the Project), proposed by NOVA Gas Transmission Ltd. (the Company), a wholly owned subsidiary of TransCanada PipeLines Limited (TransCanada), an affiliate of TC Energy Corporation.

The proposed expansion of the existing Grand Prairie and Edson Mainlines consists of separate looping sections with a cumulative length of 344 km of 1,219 mm O.D. (NPS 48) pipe. The Project will transport natural gas from a tie in about 50 km northwest of Grand Prairie (29-75-09 W6M) to a location about 25 km west of Rocky Mountain House (14-39-10 W5M). The Project also includes three 30 MW (ISO-rated power output) gas turbine compressor package unit additions at existing compressor stations.

The Canada Energy Regulator (formerly National Energy Board) issued Order XG-001-2020 on 19 February 2020 pursuant to Section 58 of the National Energy Board Act. The order contained several conditions, including the submission of an EPP specific to Section 58 Facilities and Activities that describes the criteria for implementation of environmental protection procedures, mitigation measures, and monitoring commitments, as set out in NGTL’s Project Application (NGTL 2018), subsequent filings, or agreed to through the hearing process (Condition 5) (CER 2020).

1.1 Section 58 Components This EPP of Section 58 facilities and activities for the Project currently has an anticipated 61 sites across the Project, including 15 mud sumps, three launcher/receiver pads, nine temporary access roads, three stockpile yards, three valve sites, four contractor yards, three laydown sites, 15 staging areas, three workforce temporary accommodation sites, the Nordegg, Didsbury, and Beiseker compressor station unit additions, and the January Creek Control Valve. Existing camps which are being expanded for use by the Project but are under the control of third party operators have not been included in this Section 58 EPP, however, are described in the Project’s Environmental and Socio-economic Protection Plan for workforce temporary accommodations (Section 58, Condition 8) and will adhere to the Workforce Accommodation Plan (Section 58, Condition 7).

The Section 58 facilities and activities locations listed are those known now in preparation for construction, however, as contractors are selected and they review the Project in more detail, it is anticipated there will be changes based on Project need and additional field considerations. This EPP applies mitigation and includes management plans for a wide variety of activities, which will also apply to any additions, alterations or new sites, including temporary access. Should there be unique attributes of any of the sites where change has occurred requiring mitigation not identified here, this will be managed through the construction management change process. For example, should additional mud sump sites be required, the mitigation in this document will apply to additional mud sump sites or to existing sites that are relocated or resized. Site-specific mitigation will be added through the construction management process and tracked. All Section 58 changes will be included in the Project as built reporting process and submitted in a report to the Canada Energy Regulator (CER) after the completion of the Project.

1.2 Scope of the EPP The EPP is written in construction specification format and should be read in conjunction with Project-specific environmental documents. This EPP provides Project-related environmental protection measures and commitments to be considered during the detailed engineering design, and implemented during the construction and post-construction reclamation phases of the Project.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

The EPP is based on:

• TransCanada’s Health, Safety and Environment Commitment; • TransCanada’s Health, Safety and Environment Management System; • feedback obtained through consultation and ongoing engagement; • results of biophysical field programs; • commitments made in Project-specific environmental documents (e.g., ESA, permits and approvals); and • professional experience. Revisions to the EPP may occur as a result of:

• results of supplemental studies; • commitments made during the regulatory review process including information requests; • regulatory approval conditions; and • ongoing engagement with stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups. Construction activities for the Section 58 facilities and activities are expected to begin Q3 2020, prior to pipeline construction in Q4 2020 with a targeted in-service date of April 2021. Cleanup and post-construction reclamation will start immediately following construction, or as soon as ground and weather conditions allow.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

2.0 PURPOSE The purpose of the EPP is to describe the environmental protection measures and commitments to be carried out by the Company, its Contractor(s) and subcontractor(s) (hereafter, Contractor(s)) during the construction and post-construction reclamation phases of the Project to avoid or reduce potential adverse environmental effects of the Project. The EPP includes both general and Project-specific environmental protection measures which have been developed and refined over time based on past project experience, input from stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups during consultation, and reflect current industry best management practices where applicable to Project activities.

The EPP serves as reference information to construction personnel to support decision making and provides references to more detailed information, and will also be used as a guide for identifying and implementing environmental protection measures for the Project operation phase.

One of the primary purposes of the EPP, for this Project, is the mechanism to prepare site-specific mitigation arising from input and concerns shared with NGTL during ongoing engagement with Aboriginal Groups and consultation with stakeholders (e.g., municipalities; regulators) and landowners as well as input that may come from field surveys.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

3.0 ENVIRONMENTAL PROTECTION PLAN ORGANIZATION This section provides an overview of the organization of the EPP.

3.1 Organization This EPP provides Project-related environmental protection measures and commitments to be carried out during the construction and post-construction reclamation phases of the Project. A large portion of environmental protection measures are standard practice for all TransCanada projects. Additional Project- specific environmental protection measures are identified in Section 7.0 of the EPP.

The EPP applies to the approved Project construction footprint (the construction footprint). The construction footprint may include but is not limited to a pipeline right-of-way (ROW), temporary workspace (TWS), permanent and temporary access roads, staging areas, facility sites, construction yards, office site, and pipe and/or equipment storage areas. If there are lease agreements in place for some Project areas, then there may also be conditions in those lease agreements that will also apply to those specific areas.

Environmental protection measures are identified under the headings below in accordance with the typical progression of construction activities, and are intended to be read in conjunction with the Environmental Alignment Sheets or Environmental Figures, where applicable. The Environmental Alignment Sheets and Environmental Figures identify specific locations where environmental protection measures will be applied.

The EPP is intended to provide the Company and personnel from its Contractor(s) with an understanding of the general environmental setting of the Project, extent and limitations of the EPP, specific or unique environmental protection measures for the Project, and general environmental protection measures or industry best management practices that are typically applied to each construction activity in sequence.

Sections 1 to 3 outline the purpose and organization of the EPP, summarizes the environmental setting and context with respect to geographic location, and identifies where information can be found throughout the EPP.

Section 4 "Environmental Compliance" provides information about the tools and process to facilitate compliance with all regulatory approvals, permits, commitments and specific requirements of the EPP.

Section 5 "Notification " provides details on specific activities to be followed for notification of Project activities to relevant stakeholders, landowners and Aboriginal groups before commencing construction.

Section 6 "Construction Preparation" outlines activities to clearly delineate the boundaries of approved work areas and to ensure environmentally sensitive features are properly identified prior to any ground disturbance. Proper identification avoids potential impacts to resource features and ensures that the Company and its Contractor(s) are aware of the limits of the approved work areas.

Section 7 "Project-Specific Environmental Protection Measures" outlines procedures to be undertaken to protect environmental and cultural features that were identified pursuant to the environmental assessment or that are unique to the Project. Information in Section 7 is documented and displayed on the Environmental Alignment Sheets or Environmental Figures, where applicable.

Section 8 "Project Construction" outlines the environmental protection measures associated with general Project construction, topsoil handling, strippings salvage, grading, water crossings, pipe installation activities, backfill, pressure testing, and clean-up and reclamation activities that will be executed. These measures are applicable to the construction footprint.

Section 9 "Post-Construction Monitoring" outlines activities to take place once construction and post-construction reclamation activities have been completed to evaluate the success of reclamation activities, compliance with commitments and the stability of the disturbed lands.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Appendices to the EPP include drawings, Project contacts, contingency plans and management plans to support the specific environmental protection measures identified in the EPP and provide guidance to decision making processes should conditions arise that require implementation of contingency measures.

3.2 Environmental Setting Design, construction and operation of the Section 58 facilities and activities will comply with all applicable codes, standards and regulations. Construction activities are expected to begin in Q3 2020 (clearing, access development, grading, trenchless watercourse crossings, mainline pipe installation) with a targeted in-service date of April 2021. Cleanup and post-construction reclamation will start immediately following construction, or as soon as ground and weather conditions allow.

The Section 58 facilities and activities are located within three major watersheds (Athabasca, North Saskatchewan and Peace River basins). Watercourses crossed by Section 58 facilities and activities comprise one Class C watercourse (crossed at two different locations) and one Class D watercourse. The temporary watercourse crossings on the Class C watercourse have a restricted activity periods (RAP) from 01 September to 30 June (there is not a RAP associated with Class D watercourses). There are 18 fish species in the regional study area of these two watercourses. Fish species with a provincial listing other than secure are Arctic grayling and spoonhead sculpin (May Be At Risk); bull trout and Athabasca River watershed populations of rainbow trout (At Risk); and finescale dace and pearl dace (undetermined). Federally listed species under the Species at Risk Act include the Athabasca River watershed rainbow trout listed as Endangered.

No vegetation species with special conservation status (i.e., listed as endangered, threatened or special concern) under Schedule 1 of the Species at Risk Act are known to occur within or adjacent to the Section 58 facilities and activities. Schedule 1 plant species are the only species in Alberta with legal protection. No vegetation species listed on Schedule 6 of the Wildlife Regulation under the Alberta Wildlife Act are known to occur within or adjacent to the Section 58 facilities and activities. No known occurrences of tracked ecological communities are documented within or adjacent to the Section 58 facilities and activities.

The Section 58 facilities and activities do not overlap with any plant species in the Alberta Conservation Information Management System (ACIMS) database. Species tracked and watched by ACIMS (listed as S1 to S3) have no protected status in Alberta.

Five Section 58 facilities and activities in the Deep Valley Section are within the Little Smoky Caribou Range, including two mud sumps, a valve site (on ROW), as well as a contractor yard and associated access overlapping 9.0 ha of the caribou range which was considered in the ESA submitted in June 2018 (NEB Filing ID A92619, Wood 2018) and may include activities during the RAP of 15 February to 15 July. The desired management outcomes in caribou ranges are to reduce disturbance, reduce human-caused direct mortality and manage excessive predator caused mortality (see Figures 1a to 1f).

Fourteen Section 58 facilities and activities overlap approximately 21.3 ha of key wildlife biodiversity zones in the Deep Valley, Karr and Elmworth pipeline sections. Temporary accesses to two watercourse crossings (Smoky River and Wapiti River) overlap or are located entirely within key wildlife biodiversity zones, as are five staging areas, two staging area accesses, and one stockpile yard. These zones were established to protect the integrity of ungulate winter ranges, river corridors, and biodiversity areas where species concentrate, to protect locally and regionally significant wildlife movement corridors, and to preserve areas rich with habitat diversity. Key wildlife biodiversity zones have winter timing restrictions (RAP 15 January to 30 April). Thirty Section 58 facilities and activities overlap approximately 113.2 ha of secondary grizzly bear zones.

No parks are found within or adjacent to the Section 58 facilities and activities.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

3.3 Extent and Limits of the Environmental Protection Plan Contents of the EPP apply to construction and post-construction reclamation activities occurring under non- frozen and frozen ground conditions. There may be a need to revise or refine specific measures as a result of ongoing consultation with stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups, or to address unforeseen site-specific conditions that may arise during construction. If this were to occur, the Company will resolve the issue with the appropriate construction and environmental personnel, in consultation with the responsible regulators, as required.

The Company confirms assurance of its commitment to taking responsibility for potential environmental effects of the Project through informed environmental planning, assessment, mitigation and reclamation. Indefinite terms may be included in some environmental protection measures in order to provide flexibility needed during construction and reclamation phases to accommodate unique situational circumstances where general environmental protection measures must be refined or site-specific environmental protection measures applied as part of the adaptive management process.

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S 2020 NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

4.0 ENVIRONMENTAL COMPLIANCE

Introduction Environmental compliance is facilitated through sharing of information, providing orientations/training, hiring qualified personnel and providing onsite inspection of activities through a proactive and adaptive inspection program.

Objectives The objectives of these environmental protection measures are to ensure that:

• The Company, its authorized representatives, Contractor(s) are aware of relevant environmental regulatory requirements; • processes are in place that allow the Company, its authorized representatives, Contractor(s) and to access Project environmental information to aid in decision making at the field level; and • Environmental Inspector(s) or designate(s) assigned to the Project are qualified and properly trained.

Activity Preparation Measures Approvals 1. The Company will ensure all necessary licenses and approvals are acquired before the commencement of construction. The Company, its authorized representatives, and Contractor(s) will comply with all conditions as presented to the Company on permits, approvals, licences, certificates and orders. Resolve any inconsistencies between permit conditions and contract documents as they arise. Information Sharing 2. The Environmental Inspector(s) or designate(s) and the Environmental Advisor will facilitate the transfer of environmental information and updates to all Company field personnel and the Contractor in a timely manner.

3. Maintain a complete set of Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents at the construction site. EPP and Distribution 4. Provide controlled copies of the EPP and associated environmental documents to key Project construction personnel and the Contractor prior to the start of construction.

5. The EPP serves as the construction guide for managing potential environmental issues and commitments and includes all pertinent environmental information from the ESA and/or other Project-specific environmental documents.

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Activity Preparation Measures Project-Specific 6. The Environmental Alignment Sheets, Environmental Figures and/or other Environmental Project-specific environmental documents provide information regarding Documents and environmental requirements and serve as detail to the Construction Alignment Preconstruction Sheets and/or other construction documents. Surveys 7. Provide all key Contractor and Project construction personnel with relevant results of preconstruction surveys to identify known locations of environmentally sensitive features. Indicate specific environmental protection measures for these sites on the Environmental Alignment Sheets, Environmental Figures or Project-specific environmental documents and corresponding tables (e.g., Project Specific Mitigation Measures). Identify sites with suitable markers and/or record GPS locations for post-construction monitoring (PCM) requirements. Landowner Line List 8. Review landowner requests as they appear on the landowner line list, or as they arise in the field to ensure conformance with the environmental commitments. Legislation, 9. Legislation, guidelines, and industry best practices have been considered in Guidelines, and the creation of this EPP. Refer to the list of Regulations, Guidelines, and Industry Best Industry Best Practices (Appendix 1G). Practices Environmental 10. The Environmental Inspector(s) or designate(s) hired for the Project are Inspector(s) or required to have experience in environmental inspection and/or planning. The Designates(s) Environmental Inspector(s) or designate(s) will have an understanding of Qualifications pipeline and/or facility construction techniques and will take a proactive approach to environmental issues. In addition, the Environmental Inspector(s) or designate(s) will be supported by appropriate Environmental Resource Specialists who have expertise in the particular issues associated with the Project and who will be available onsite or consulted, as required. Environmental 11. The Environmental Inspector’s or designate’s main responsibility is to ensure Inspection that all environmental commitments, undertakings and approval conditions are Responsibilities met and that work is completed in compliance with applicable environmental legislation and Company policies, procedures and specifications in the most efficient and effective way possible.

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Activity Preparation Measures Environmental 12. Other responsibilities of the Environmental Inspector(s) or designate(s) include: Inspection • providing expert advice and guidance on decisions or courses of action to Responsibilities (cont’d) deal with environmental conditions and issues; • reporting releases in accordance with federal and/or provincial legislation and advising Company management on the clean-up and disposal of the material and any affected soils or vegetation; • monitoring delivery of environmental orientation presentations to the Company, regulatory, and Contractor personnel, as directed by the Construction Manager and the Environmental Advisor; • preparing daily reports; • preparing, collecting, organizing, and disseminating all environmentally- related information and documentation that arises during construction; • liaising with responsible government agencies; • supervising the Environmental Resource Specialists that may be required to support the Project; • organizing onsite meetings as the need arises, to address site-specific issues; • participating in discussions with stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups, as requested; • reviewing construction methodologies with the Project team; and • collecting environmental information throughout construction for documentation and Project reporting. Project Training and 13. Hire the Environmental Inspector(s) or designate(s) before the commencement Orientation of construction with sufficient lead time to enable training and participation in the orientation of the Company and Contractor personnel, as well as sufficient on site time to facilitate review of environmentally sensitive aspects of the Project. 14. The Environmental Inspector(s) or designate(s) will be briefed by the Environmental Advisor on the environmentally sensitive aspects of the Project, and the environmental processes and approvals that have taken place to date. 15. The Environmental Inspector(s) or designate(s) will review all relevant Project- related information. 16. The Company will develop an environmental orientation that will be delivered to ensure that all personnel working on Project construction are informed of Project-specific environmental requirements and sensitivities, before being allowed access to the Project site. 17. The Company will ensure the environmental orientation is provided to the Contractor. The Contractor will present the environmental orientation to all Project construction personnel. The Contractor will keep a log of all personnel that have received the environmental orientation and will provide to the Company upon request.

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Activity Preparation Measures Non-Compliances 18. The Environmental Inspector(s) or designate(s) will be notified by the and Resolution responsible person onsite when a non-compliance is identified and it will be his/her responsibility to contact the Construction Manager. If the Construction Manager is not available during a non-compliance situation, the Environmental Inspector(s) or designate(s) have the authority to modify work procedures, refine environmental protection measures, or initiate work stoppage. 19. The Construction Manager will make a determination to either modify the work procedure or shut the activity down until corrective actions are determined and implemented. The Environmental Inspector(s) or designate(s) will provide input to this decision making process. 20. If the work is shut down, it will resume only when corrective actions have been developed and approved by the Company. Once approved by the Company, the Contractor will inform the work crew and work will proceed following the corrective action plan.

21. The Environmental Inspector(s) or designate(s) are responsible for documenting all procedure modifications, refinements to environmental protection measures, and environmental non-compliances.

Change Management During the course of construction, it may be necessary to modify or create new procedures to address site conditions not anticipated in the EPP. This procedure outlines the process to be followed.

Activity Preparation Measures Modifications 22. Contact the Environmental Inspector(s) or designate(s) if site conditions warrant a change in work procedure that may have environmental implications. 23. Develop the modification to the procedure in co-operation with the Construction Manager, Environmental Inspector(s) or designate(s), and the Company's Project Management Team. 24. The modification to the work procedure will include the following: • description of the modification; • location; • rationale for change; • environmental considerations reviewed as part of modification request; • environmental objectives considered as part of the modification request; • equivalent or approved standard environmental protection measures; • refinements to existing or additional environmental protection measures required; • site sketch or photo documentation; and • documented sign-off by the Construction Manager, Environmental Inspector(s) or designate(s), Environmental Advisor and/or Project Manager.

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Activity Preparation Measures Modifications 25. If the modification meets environmental objectives, and there is no specific (cont’d) regulatory licence or approval required to implement the modification, no additional discussions with regulatory agencies are necessary. 26. Modifications that are a variance from Project approval conditions will be discussed with the Regulator, and approval will be obtained, if required. Issue Resolution and 27. Environmental issues or inquiries that arise will be reviewed and resolved by Escalation the Environmental Inspector(s) or designate(s) following consultation with construction personnel, and when additional expertise is required, the Environmental Resource Specialist (e.g., soils specialist, wildlife biologist, archaeologist, etc.). If escalation is required for resolution, the Environmental Inspector(s) or designate(s) will review the issue and consult with the Construction Manager to consider potential options and impacts to other aspects of the Project prior to making a decision. 28. Should issues arise that cannot be resolved at the field level the Construction Manager and Environmental Inspector(s) or designate(s) will consult with the Project Manager and the Environmental Advisor or designate to fully consider potential options and impacts to other aspects of the Project prior to making a decision. 29. Project commitments related to environmental compliance will not be compromised as a result of the issue resolution. Final decision making authority and accountability remains with the Project Manager.

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5.0 NOTIFICATION

Introduction Notification of the construction schedule and timing of specific construction activities will facilitate awareness of upcoming activities, and allow stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups to plan as appropriate for construction in the Project area.

Objectives The objectives of these environmental protection measures are to ensure:

• interruptions to other land use activities are avoided or reduced during Project construction; • stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups are aware of Project activities; and • communication is maintained with relevant regulatory agencies throughout construction.

Contacts Measures Federal, Provincial 1. Inform all responsible federal and provincial resource agencies and interested and Municipal municipal officials of the Project developments as warranted. Agencies Landowners and 2. Notify potentially affected landowners, lessees and nearby residents of the Lessees intended Project schedule before the start of construction to avoid or reduce impacts to their operations or activities. Potentially Affected 3. Provide potentially affected Aboriginal groups with the Project construction Aboriginal Groups schedule and maps. Trappers 4. Notify registered trappers at least 10 days prior to construction.

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6.0 CONSTRUCTION PREPARATION

Introduction The following measures will be implemented by the Company's Contractor(s) before initiating ground disturbance activities.

Objectives The objectives of these environmental protection measures are to ensure:

• all environmental resources are properly identified and marked in the field before the initiation of ground disturbance to avoid or reduce potential adverse Project effects; • the construction footprint is properly delineated to prevent inadvertent trespass; and • all access to and from the work sites are properly marked to maintain safety and environmental compliance.

Activity/Concern Mitigation Measures Staking 1. To prevent inadvertent trespass, stake the approved construction footprint to clearly delineate all boundaries. 2. Mark and locate all foreign lines and cables using One-Call services before the start of construction. Environmental 3. Prior to the start of construction activities, clearly mark all sensitive resources Resource as identified on the Environmental Alignment Sheets, Environmental Figures Delineation and/or other Project-specific environmental documents and in the Project- specific mitigation tables (Tables 1 and 2). 4. Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. 5. The Environmental Inspector(s) or designate(s) will confirm the accuracy of all environmentally sensitive resource locations, and will ensure marking is maintained during construction. 6. The Environmental Inspector(s) or designate(s) will identify and notify the Contractor of the appropriate locations for wildlife gaps. Access Delineation 7. Clearly delineate areas that have access restrictions. Restrict access to construction personnel only. Hot Line Exposure/ 8. Salvage topsoil prior to hydrovac use in all areas with agricultural potential. Hydrovac 9. Empty the hydrovac truck onto subsoil at approved locations (e.g., at road crossings where the topsoil has been stripped). Ensure that hydrovac material is contained within the designated release area (i.e., will not migrate to a waterbody or onto topsoil). Refer to the Hydrovac Slurry Handling Management Plan (Appendix 1F). Grade Plan 10. The Contractor shall provide a grade plan to the Company, or as specified in the contract documents. The grade plan will be reviewed by the Environmental Inspector(s) or designate(s) to ensure identified environmental resources are addressed as per Project commitments.

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7.0 PROJECT-SPECIFIC ENVIRONMENTAL PROTECTION MEASURES

Introduction This section of the EPP describes the Project-specific environmental protection measures that will be used to protect sensitive environmental features, and are in addition to the general environmental protection measures provided in other sections of the EPP. All Project-specific mitigation measures are identified in Table 1, Table 2, the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents.

Objectives The objectives of these environmental protection measures are to:

• ensure the identification and protection of biophysical and cultural resources identified in Project- specific environmental documents; and • implement Project-specific construction and reclamation mitigation measures to minimize disturbance to environmental features, where avoidance is not technically or economically feasible. Table 1 summarizes the required Project-specific mitigation measures.

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TABLE 1: SECTION 58 COMPONENTS-SPECIFIC MITIGATION MEASURES

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y WATERSHED – GENERAL WS-02 See comments See comments Whirling Disease Whirling Disease • Prior to equipment commencing work at a watercourse or waterbody site, follow equipment cleaning Entire Project is in the (yellow Decontamination Risk requirements in Environmental Protection Plan (EPP) Section 8.1 – Equipment Cleaning. yellow zone, with the zone) Zone • Prior to equipment that has worked at any watercourse or waterbody site leaving the Project footprint, exception of the also follow requirements in EPP Section 8.1 – Equipment Cleaning. Brewster section between KP 0 KP 8 • Latest map of the Red and Yellow Zones can be found here: +063 which is in the https://open.alberta.ca/publications/whirling-disease-decontamination-risk-zone-map. red zone. WILDLIFE – GENERAL N/A Migratory Birds Primary Nesting Period • Schedule clearing and construction activities outside of the breeding bird window (01 May to 10 August) Entire Project (01 May to 10 August) to the extent practical. • In the event construction 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 (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. WD-04 Bears 01 November to 01 May • Refer to Bear Management Plan (Appendix 1F). Entire Project • If construction occurs during the bear denning period, where potential bear denning habitat is present, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with Alberta Environment and Parks (AEP) to determine appropriate mitigation. VALHALLA SECTION Staging Area 1 N/A NE-29-75-09-W6M N/A • No site-specific mitigation measures. Staging Area 2 N/A NE-20-72-09-W6M N/A • No site-specific mitigation measures. Staging Area 3 N/A SE-17-72-09-W6M SW-17-72-09-W6M N/A • No site-specific mitigation measures. Staging Area 4 N/A SW-17-72-09-W6M N/A • No site-specific mitigation measures. Mud Sump Site C N/A SW-32-75-09-W6M N/A • No site-specific mitigation measures. Mud Sump Site D N/A SW-32-75-09-W6M N/A • No site-specific mitigation measures. ELMWORTH SECTION N/A 04-05-69-07-W6M 09-10-070-08-W6M 08+885 24+515 369251 6089777 536598 6105675 Clubroot • All soil handling equipment used in and leaving the Municipal District of Greenview must follow the equipment cleaning requirements in the EPP Section 8.1 – Equipment Cleaning for Clubroot #33. Kickoff – Cross Over Valve & Staging Area 1 WT-01 NW-24-068-07-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company.

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y Mud Sump Site 1 N/A SW-04-70-07-W6M N/A • No site-specific mitigation measures. Mud Sump Site 3 N/A SW-22-69-08-W6M N/A • No site-specific mitigation measures. Staging Area 2 WD-03 SW-02-70-08-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the Key Wildlife Biodiversity Zone (KWBZ) restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). Staging Area 6 WD-03 SE-10-70-08-W6M SW-11-70-08-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). Access to Wapiti River HDD Site – South Side WT-01 Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-03 SE-10-70-8 W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and SW-11-70-8 W6M Biodiversity Zone Protection Plan (Appendix 1F). NW-11-70-8 W6M NE-10-70-8 W6M HR-02 SE-10-70-08-W6M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. However, sites are SW-11-70-08-W6M within the Project footprint. NGTL and the Contractor are to be aware and vigilant of increased potential NE-10-70-08-W6M for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. NW-11-70-08-W6M HR-05 SW-11-70-08-W6M Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Access to Wapiti River HDD Site – North side Access to Wapiti River HDD Site – North side WD-03 NW-10-70-08-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and NE-10-70-08-W6M Biodiversity Zone Protection Plan (Appendix 1F). SE-15-70-08-W6M SW-15-70-08-W6M HR-02 NW-10-70-08-W6M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. However, sites are NE-10-70-08-W6M within the Project footprint. NGTL and the Contractor are to be aware and vigilant of increased potential SE-15-70-08-W6M for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. SW-15-70-08-W6M

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y HR-05 NW-10-70-08-W6M Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is NE-10-70-08-W6M on-site to monitor construction activities. SE-15-70-08-W6M • Should significant palaeontological resources be encountered during the conduct of the monitoring SW-15-70-08-W6M program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Staging Area 3 WD-03 NW-10-70-08-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). HR-02 NW-10-70-08-W6M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. However, sites are within the Project footprint. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. HR-05 NW-10-70-08-W6M Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Staging Area 4 WD-03 W1/2 15-70-08-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). HR-02 W1/2 15-70-08-W6M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. However, sites are within the Project footprint. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. HR-05 W1/2 15-70-08-W6M Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Staging Area 5 N/A SE-12-71-10-W6M N/A • No site-specific mitigation measures. NE-01-71-10-W6M KARR SECTION GPM 60 N/A NW-28-63-01-W6M N/A • No site-specific mitigation measures.

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y Latornell Staging Area A WT-01 NW-28-63-01-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet, and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. GPM 70 N/A N1/2-25-65-03-W6M N/A • No site-specific mitigation measures. S1/2-36-65-03-W6M Site B Camp N/A N1/2-12-067-04-W6M • No site-specific mitigation measures. S1/2-13-67-04-W6M Mud Sump Site 2 N/A NE-23-67-05-W6M • No site-specific mitigation measures. Access to Smoky River HDD Entry Site WD-03 NW-29-67-04-W6M NW-29-67-04-W6M 52+992 52+980 398336 6076984 398256 6076983 Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). HR-02 NW-29-67-04-W6M NW-29-67-04-W6M 52+992 52+980 398336 6076984 398256 6076983 Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. However, sites are within the Project footprint. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. HR-05 NW-29-67-04-W6M NW-29-67-04-W6M 52+992 52+980 398336 6076984 398256 6076983 Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Access to Smoky River HDD Exit Site WD-03 NW-30-67-04-W6M NW-30-67-04-W6M 53+927 54+221 397309 6077020 397024 6077013 Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). HR-02 NW-30-67-04-W6M NW-30-67-04-W6M 53+927 54+221 397309 6077020 397024 6077013 Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan.

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y HR-05 NW-30-67-04-W6M NW-30-67-04-W6M 53+927 54+221 397309 6077020 397024 6077013 Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Mud Sump Site 3 N/A SE-34-67-04-W6M N/A • No site-specific mitigation measures. Mud Sump Site 4 N/A NE-22-67-04-W6M • No site-specific mitigation measures. NW-23-067-04-W6M Gold Creek Staging Area N/A NE-26-67-05-W6M N/A • No site-specific mitigation measures. SE-26-67-05-W6M DEVCO Stockpile Site WT-01 SE-03-68-05-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Site Information Sheet, and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. DEEP VALLEY SECTION SITE D Contractor Yard N/A NW-11-59-23-W5M N/A • No site-specific mitigation measures. NE-10-59-23-W5M DVS/Colt DML4 Contractor Yard WD-04 W1/2-17-59-23-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Mud Sump Site 2 WD-04 NW-04-60-25-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). SW-09-60-25-W5M • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. WD-05 NW-04-60-25-W5M Little Smoky Caribou Range 15 February to 15 July • Schedule clearing and construction activities outside of the RAP unless authorized by the regulator SW-09-60-25-W5M • If construction activities occur within the Caribou restricted timing window, implement the Caribou Protection Plan Mud Sump Site 3 WD-04 NW-13-61-26-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). NE-14-61-26-W5M • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y WD-05 NW-13-61-26-W5M Little Smoky Caribou Range 15 February to 15 July • Schedule clearing and construction activities outside of the RAP unless authorized by the regulator. NE-14-61-26-W5M • If construction activities occur within the Caribou restricted timing window, implement the Caribou Protection Plan Valve Site GPM 40 WD-04 SW-10-61-26-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. WD-05 SW 10-61-26-W5M Little Smoky Caribou Range 15 February to 15 July • Schedule clearing and construction activities outside of the RAP unless authorized by the regulator. • If construction activities occur within the Caribou restricted timing window, implement the Caribou Protection Plan SITE A Contractor Yard Site WT-01 SW-14-062-27-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-04 SW-14-62-27-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). SE-15-62-27-W5M • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. WD-05 SW-14-062-27-W5M Little Smoky Caribou Range 15 February to 15 July • Schedule clearing and construction activities outside of the RAP unless authorized by the regulator. SE-15-062-27-W5M • If construction activities occur within the Caribou restricted timing window, implement the Caribou Protection Plan DVN DML 2 Campsite and/or Contractor Yard / Stockpile WT-01 N1/2-24-62-01-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required.

WD-04 N1/2-24-62-01-W6M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). S1/2-25-62-01-W6M • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Site G Contractor Yard Site WD-03 NW-02-63-01-W6M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). WD-04 NW-02-63-01-W6M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Deep Valley South Staging Area WD-03 E1/2-25-58-24-W5M Key Wildlife Biodiversity Zones 15 January to 30 April • If construction activities occur within the KWBZ restricted timing window, implement the Key Wildlife and Biodiversity Zone Protection Plan (Appendix 1F). WD-04 E1/2-25-58-24-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation.

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y Latornell Staging Area B WT-01 NW-28-63-01-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. DVN Contractor Yard /Stockpile WT-01 E1/2-34-64-02-W6M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-07 E1/2-34-64-02-W6M Western Toad 01 April to 30 September • A non-intrusive amphibian sweep will be conducted by a qualified Environmental Inspector or wildlife resource specialist to identify active breeding areas in advance of construction activities. • For known or newly discovered amphibian breeding areas, site-specific mitigation measures will be implemented as per the Amphibian Management Plan (e.g., marked protective buffer around breeding area, fencing, recovery and relocation). • Obtain a wildlife research permit and collection license from AEP prior to handling of western toads. • If toads/toadlets are located within the construction area, drift fences will be erected, and the toads will be captured and relocated out of the construction area. ROBB SECTION Mud Sump Site 5 N/A NW-01-52-18-W5M N/A • No site-specific mitigation measures. Mud Sump Site 4 N/A NE-17-52-17-W5M N/A • No site-specific mitigation measures. Mud Sump Site 3 N/A SW-12-53-18-W5M N/A • No site-specific mitigation measures. Laydown Site 3 HR-02 NE-02-53-18-W5M SE-11-53-18-W5M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. Northern HDD Access HR-02 NE-02-53-18-W5M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y Southern HDD Access HR-02 SE-35-52-18-W5M NW-36-52-18-W5M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan. HR-05 SE-35-52-18-W5M NW-36-52-18-W5M Palaeontological Site • No excavation activities are to take place in the area until a professional consulting palaeontologist is on-site to monitor construction activities. • Should significant palaeontological resources be encountered during the conduct of the monitoring program, the Royal Tyrrell Museum of Palaeontology must be contacted. It may then be necessary for Alberta Culture, Multiculturalism and Status of Women to issue further instructions regarding these resources. • Should HDD fail and open-trenching contingency is required, fossil deposits must be: (1) quarried prior to pipeline construction in order to collect significant palaeontological resources and document the local geological setting; and (2) monitored during excavation of the pipeline trench in order to salvage any additional fossils that may be exposed. Laydown Site 1 N/A NW-23-49-16-W5M N/A • No site-specific mitigation measures. Laydown Site 2 WT-01 SE-24-52-18-W5M NW-20-52-17-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. DISMAL CREEK SECTION Kickoff Launcher/Receiver (DC-1 & DC-4) WT-01 NW-03-047-14-W5M NW 03-047-14 W5M 0+309 0+368 569168 5875746 569140 5875798 Wetland WLDC01 • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-04 SW-03-47-14-W5M NW 03-047-14 W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Stockpile Site 4 WD-04 NE-09-47-14-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y HR-02 NE-09-47-14-W5M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan Stockpile Site 3 WD-04 NW-07-47-14-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Mud Sump Site 3 WD-04 NE-22-048-15-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Mud Sump Site 1 N/A NE-02-49-16-W5M N/A • No site-specific mitigation measures. Mud Sump Site 2 WD-04 SE-01-49-16-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). SW-01-49-16-W5M • If construction commences during the bear denning period, a field survey for bear dens will be conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Contractor Yard Site 5 HR-02 04-24-049-16-W5M Listed Historical Resources • Historical resource sites have been mitigated and no further mitigation is required. NGTL and the Contractor are to be aware and vigilant of increased potential for additional resources in the vicinity of the site. In the event of a chance find during project activities, see the Cultural Resources Discovery Contingency Plan Access DC-5 WD-04 NE-07-47-14-W5M SE-07-47-14-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). Access DC-6 WT-01 NW-31-47-14-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-04 NW-31-47-14-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). Access DC-7 WT-01 SW-16-48-15-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y WD-04 SW-16-48-15-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). Access DC-8 WT-01 NW-29-48-15-W5M NE-29-48-15-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-04 NW-29-48-15-W5M NE-29-48-15-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). Access DC-9 WD-04 NE-31-48-15-W5M NW-32-48-15-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). Campsite and Contractor Yard Site 6 WT-01 NE-12-47-14-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction NW-07-47-13-W5M activities occurring within wetlands, as required. SE-12-47-14-W5M • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the SW-07-47-13-W5M Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. WD-04 NE-12-47-14-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). NW-07-47-13-W5M SE-12-47-14-W5M SW-07-47-13-W5M BREWSTER SECTION WS-01 (red 07-14-039-10-W5M 08-05-040-10-W5M 0+000 8+063 477505 5798346 472944 5804843 Whirling Disease Whirling Disease • Prior to equipment commencing work at a watercourse or waterbody site, follow equipment cleaning zone) Decontamination Risk requirements in EPP Section 8.1 – Equipment Cleaning. Zone • Prior to equipment leaving the Whirling Disease Red Zone (KP 0 – 8+063) and/or the Project footprint, that has worked at any watercourse or waterbody site, follow requirements in EPP Section 8.1 – Equipment Cleaning. • Latest map of the Red and Yellow Zones can be found here: https://open.alberta.ca/publications/whirling-disease-decontamination-risk-zone-map. WS-02 08-05-040-10-W5M 11-20-043-12-W5M 8+063 49+136 472944 5804843 452269 5839008 Whirling Disease Whirling Disease • Prior to equipment commencing work at a watercourse or waterbody site, follow equipment cleaning (yellow Decontamination Risk requirements in EPP Section 8.1 – Equipment Cleaning. zone) Zone • Prior to equipment that has worked at any watercourse or waterbody site leaving the Project footprint, , also follow requirements in EPP Section 8.1 – Equipment Cleaning. • Latest map of the Red and Yellow Zones can be found here: https://open.alberta.ca/publications/whirling-disease-decontamination-risk-zone-map. Kickoff Staging Area N/A N/A • No site-specific mitigation measures. B-1 Launcher/Receiver N/A N/A • No site-specific mitigation measures.

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Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y Mud Sump Site 3 N/A NE 12-40-10-W5M N/A • No site-specific mitigation measures. SE 12-40-10-W5M Mud Sump Site 4 WD-04 NW 05-40-10-W5M Grizzly Bear Secondary Zone 01 November to 01 May • Implement Bear Management Plan (Appendix 1F). NE 05-40-10-W5M • If construction commences during the bear denning period, a field survey for bear dens will be SW 08-40-10-W5M conducted by a qualified wildlife resource specialist. If an active den is discovered, consult with AEP to determine appropriate mitigation. Mud Sump Site 5a N/A NW-34-33-10-W5M N/A • No site-specific mitigation measures. Mud Sump Site 5b N/A NW-34-33-10-W5M N/A • No site-specific mitigation measures. End of Line Launcher/Receiver (B-6) WT-01 SE-20-43-12-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction NE-20-43-12-W5M activities occurring within wetlands, as required. NW-20-43-12-W5M • Prior to the start of construction activities, clearly mark all sensitive resources as identified on the Environmental Alignment Sheets or other Project-specific environmental documents and in the Project specific mitigation tables. • Following clearing, re-mark all sensitive resources as necessary and supplement markings with signage. • Refer to the Environmental Alignment Sheet and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard measures identified in Section 8 of the EPP. • Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. NORDEGG COMPRESSOR STATION WT-01 E1/2-20-43-12-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Refer to the Environmental Site Information Sheet, and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard wetland mitigation measures identified in Section 8.1 of the EPP. BEISEKER COMPRESSOR STATION EQC-01 E1/2-24-27-25-W4M Creeping thistle (noxious) • Any equipment coming into contact with vegetation (i.e., mowing/clearing) or handling topsoil (i.e., Single occurrence stripping or replacing topsoil) will be cleaned prior to leaving the area of weed infestation. (i.e., hand (refer to ESIS) removal/sweeping/hand washing or compressed air). • The method of cleaning will be determined by the Environmental Inspector at the time of soil handling activities. (i.e., shovel and sweep, pressure wash, etc.). • Follow general noxious weed mitigation outlined is section 8.1 of the EPP. DIDSBURY COMPRESSOR STATION N/A SE-29-30-02-W5M • No site-specific mitigation measures. JANUARY CREEK CONTROL VALVE WT-01 NE-27-54-14-W5M Wetland • The Company will obtain regulatory approval and follow conditions and requirements for construction activities occurring within wetlands, as required. • Refer to the Environmental Site Information Sheet, and applicable typical drawings for specific mitigation related to wetlands. In addition, adhere to the standard wetland mitigation measures identified in Section 8.1 of the EPP.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Location Timing Windows Description of Mitigation LSD Start LSD End UTM Start UTM End Issue and/or Regulatory Mitigation Occurrence/ Code KP KP Guidelines Other Comments Start End X Y X Y WD-07 NE-27-54-14-W5M Western toad 01 April to 30 September • A non-intrusive amphibian sweep will be conducted by a qualified Environmental Inspector or wildlife resource specialist to identify active breeding areas in advance of construction activities. • For known or newly discovered amphibian breeding areas, site-specific mitigation measures will be implemented as per the Amphibian Management Plan (e.g., marked protective buffer around breeding area, fencing, recovery and relocation). • Obtain a wildlife research permit and collection license from AEP prior to handling of western toads. • If toads/toadlets are located within the construction area, drift fences will be erected, and the toads will be captured and relocated out of the construction area.

Notes: All locations are approximate. See Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents for additional details.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

8.0 PROJECT CONSTRUCTION

8.1 General Environmental Protection Measures

Introduction The general environmental protection measures provided below are applicable to all work areas and activities throughout the construction phase.

Objective The objective of these environmental protection measures is to:

• avoid or reduce the potential adverse environmental effects associated with construction activities.

Activity/Concern Mitigation Measures Regulatory Contact 1. Document all field regulatory contacts and forward to the Construction Manager and the Environmental Advisor. Access 2. Post signage to discourage unauthorized public access onto the construction footprint during construction. 3. Use frost packing, snow, ice, geotextile and fill, rig mats, swamp mats or access mats for access through wet areas. 4. Restrict all construction activities to the approved construction footprint including temporary access such as shoeflies. All construction traffic will adhere to safety and road closure regulations. 5. For other access measures and guidelines on the construction footprint and associated access roads, refer to the Traffic Control Management Plan (Appendix 1F). Water Tanks 6. The Contractor is to ensure all tanks intended for water storage or transportation (i.e., water trucks, hydrovac equipment, frac tanks, etc.) are clean prior to use. Upon request by the Company, the Contractor must provide documented proof of cleanliness. Secondary 7. Ensure pumps, generators, light towers, frost fighters, hand-held fuel Containment containers used within 100 m of a water body have secondary containment that can hold 125% of the fuel tank. This applies to secondary containments that are constructed on site. Where equipment includes double-walled or Enviro tank in the design, the minimum requirement shall be 110% of the fuel tank. 8. All fuel tanks, hazardous materials and chemicals shall be stored within appropriate secondary containment per requirements outlined in the Chemical and Waste Management Plan (Appendix 1F). 9. Do not allow fuel, oil, or hazardous material storage within 100m of a watercourse or waterbody except where secondary containment is provided.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Activity/Concern Mitigation Measures Erosion Controls – 10. The location of all discharge areas shall be approved by the Environmental Water Pumping Inspector(s) or designate(s). 11. Water pumping from the construction footprint shall be released onto stable surfaces in a manner that does not cause erosion of soils, or sedimentation of the watercourse. 12. Using filter bags or other appropriate sediment filtering devices, pump water onto stable, well vegetated areas, tarpaulins, sheeting, rocks, sand bags, or into settling ponds. Complete dewatering in a manner that does not cause erosion or allow sediment to re-enter a watercourse or waterbody. 13. Do not permit pumped water to flow directly into any watercourse. If water is released onto private land, landowner consent must be acquired prior to release. 14. The Contractor will ensure the pump intake is elevated to minimize the pumping of sediment. 15. The Contractor will ensure hoses and pumps are of sufficient length and capacity to transfer water to the desired location. 16. The Contractor will ensure hoses are in good working condition, and hoses with tears or ruptures will be repaired or replaced. Water Wells 17. Based on the evaluation of water well logs, regional geological information, or site-specific information collected, provide shallow domestic well owners the option to participate in a water well monitoring program prior to construction to determine baseline quality and quantity conditions. Hydrology 18. If springs and ground water are encountered, the Company will review the area and determine the appropriate mitigation. 19. Leave gaps in windrows, at obvious drainages, on side-hill terrain and wherever seepage occurs to reduce interference with natural drainage patterns. Wildlife 20. 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. Locations where wildlife gaps are appropriate will be determined in the field by the Environmental Inspector(s) or designate(s). These gaps should align. 21. 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. 22. If wildlife or livestock are discovered in the trench, or in association with any other activity or facility, report to the Environmental Inspector(s) or designate(s) who will contact the responsible regulatory agencies, as required. In the case of livestock, the land agent assigned to the Project will contact the landowner. 23. Project personnel are not permitted to hunt or fish on the construction footprint.

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Activity/Concern Mitigation Measures Wildlife (cont’d) 24. 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 (ATVs) or snowmobiles by construction personnel on the construction footprint. Report any incidents with wildlife to the Environmental Inspector or designate(s) immediately. Listed or Sensitive 25. If previously unidentified listed or sensitive wildlife species or their site-specific Wildlife Species habitat (e.g., dens, nests) are identified during Project construction, report to the Environmental Inspector(s) or designate(s) and implement the Wildlife Species of Concern Discovery Contingency Plan (Appendix 1E). 26. Report sightings of Project-specific species of interest to the Environmental Inspector(s) or designate(s). Specific protection measures may be implemented and the sighting will be recorded. Rare Plants / 27. If previously unidentified rare plants or rare ecological communities are found Rare Ecological on the construction footprint prior to or during construction, implement the Plant Communities Species and Ecological Communities of Concern Discovery Contingency Plan (Appendix 1E). 28. Clearly mark identified rare plant locations prior to the start of Project construction. 29. Review mitigation for rare plants / rare ecological communities with Contractor personnel in advance of construction to ensure there is full understanding of the procedures involved. Equipment Cleaning 30. All equipment, including mats, must be clean and free of soil or vegetative debris prior to use on site. 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 to perform any work until it has been cleaned, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use. 31. Prior to equipment arriving at any watercourse or waterbody site, the Contractor shall provide to the Company the cleaning procedure(s) utilized for all equipment (e.g., pumps, hoses, tanks, hydrovac trucks, water trucks, bridges) to be used in or adjacent to the watercourses or waterbodies. Procedures must meet the Alberta Level 1 Decontamination Protocol (Clean, Drain, Dry), or provincial equivalent, and documented proof of cleanliness is required. Prior to equipment being used in or adjacent to any watercourse or waterbody site, the Contractor shall conduct inspections for signs of dirt, debris and contamination. Prior to equipment being used in or adjacent to any watercourse or waterbody site, the Environmental Inspector(s) or designate(s) working on behalf of the Company shall receive and review all Contractor-supplied cleaning procedures and documented proofs of cleanliness. The Environmental Inspector(s) or designate(s) will confirm equipment cleaning procedures meet, at a minimum, the Alberta Level 1 Decontamination Protocol (Clean, Drain, Dry), or provincial equivalent, prior to use on site, and conduct on-site visual inspections of equipment and document the results of their inspections in their daily report(s).

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Activity/Concern Mitigation Measures Equipment Cleaning 32. To minimize the potential for transporting clubroot to the construction footprint, (cont’d) following thorough cleaning to remove all soil and vegetative debris, all equipment including mats, shall be sanitized by misting with a weak disinfectant solution (i.e., 1-2% bleach), prior to its arrival on the Project, unless otherwise directed by the Environmental Inspector(s) or designate(s). Weeds 33. Apply mitigations for locations identified as having listed weed infestations according to applicable regulatory requirements, as identified in the Project- Specific Mitigation Measures Table (Table 1). 34. Salvage and store topsoil/strippings separately where listed weed infestations are identified on the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents. 35. 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. 36. 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. 37. Unless a certificate of weed analysis can be 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. 38. Where straw is required, it will be sourced from the Project area to the extent feasible. Should local sources not be available, approval from the landowner and responsible regulatory agency, where required, will be secured prior to importing from outside of the Project area. Potential source locations will be inspected to the extent practical for listed weeds. Prior to securing straw from any source (other than from the landowner supplied straw) provisions will be taken (assessment of field(s), and / or straw testing from an independent lab for weed analysis) to prevent the introduction or spread of listed weeds. Use of Herbicides 39. Use of herbicides on the construction footprint is prohibited unless otherwise approved by the Company. 40. Prohibit the general application of herbicide near rare plants or rare ecological communities. Spot spraying, wicking, mowing, or hand-picking are acceptable measures for weed control in these areas. 41. Prohibit the use of herbicides within 30m of an open body of water, unless the herbicide application is conducted by ground application equipment, or otherwise approved by the responsible regulatory agency. Wetlands 42. The Company will obtain regulatory approval for construction activities occurring within wetlands, as required. Construct the wetland crossings in accordance with the applicable regulatory requirements. 43. Minimize the removal of vegetation in wetlands to the extent possible.

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Activity/Concern Mitigation Measures Wetlands (cont’d) 44. Conduct ground level cutting/mowing/mulching of wetland vegetation instead of grubbing. The method of removal of wetland vegetation is subject to approval by the Company. 45. Direct grading away from wetlands. 46. Minimize grading within wetland boundary. 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). 47. If ground conditions are encountered that create potential for rutting, admixing or compaction, minimize ground disturbance by using a protective layer such as frost packing, snow, ice, geotextile and fill, rig mats, swamp mats or access mats between wetland root/seed bed and construction equipment. 48. Replace trench material as soon as feasible, and re-establish preconstruction contours within wetland boundary to facilitate cross ROW drainage. 49. 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 (Appendix 1E) for additional measures. 50. Where there are permanent or temporary access roads, maintain cross- drainage to allow water to move from one side of the access road to the other. 51. Natural recovery is the preferred method of reclamation in wetlands. Do not seed wetland areas unless otherwise directed by the Company. 52. The Company will obtain regulatory approval prior to infilling wetlands, where required. Historical and 53. If historical or palaeontological features (e.g., arrow heads, modified bone, Palaeontological pottery fragments, fossils) not previously identified are found on the Resources; Potential construction footprint during construction, implement the measures outlined in Human Remains the Cultural Resource Discovery Contingency Plan (Appendix 1E). 54. Prohibit the collection of Historical Resources by Project personnel. 55. If potential human remains are found on the construction footprint during construction, implement the measures outlined in the Cultural Resource Discovery Contingency Plan (Appendix 1E). Traditional Land Use 56. If traditional land use (TLU) sites not previously identified are found on the Sites construction footprint during construction, implement the Cultural Resource Discovery Contingency Plan (Appendix 1E). Waste Disposal 57. 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 (Appendix 1F) and the Release Contingency Plan (Appendix 1E) unless otherwise authorized by the Environmental Inspector(s) or designate(s).

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Activity/Concern Mitigation Measures Contaminated Soils 58. In the event contaminated soils are encountered during construction, implement the Contaminated Soils Contingency Plan and the Environmental Management of Industrial and Hazardous Wastes Standard. Fire Prevention 59. Ensure that personnel are made aware of the proper disposal methods for welding rods, cigarette butts and other hot or burning material. 60. Smoke only in designated areas. 61. Prior to commencement of construction, the Contractor will designate one of his staff as Fire Boss. The Fire Boss will be familiar with fire-fighting techniques and equipment. 62. Necessary fire-fighting equipment will be on site in accordance with the requirements of the responsible regulatory authority. 63. All motorized equipment must carry a fully charged fire extinguisher. The Fire Boss will ensure that fire extinguishers are present and fully charged and all fireline equipment is present and in working order. 64. Ensure the Contractor has the necessary fire-fighting 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. 65. The fire equipment and water supply on site will be increased as the fire hazard increases. 66. Only burn slash if permission is granted from the regulating authorities and if conditions permit. If burning is delayed, store slash on the construction footprint. All burning will be completed in accordance with the applicable regulations and permits. 67. For activities conducted during the fire season as determined by the applicable jurisdiction, determine the Fire Danger Class for the location, and communicate it to onsite personnel on a regular basis. 68. In the event of a fire or elevated fire hazard conditions according to applicable guidelines or regulations, follow the measures outlined in the Fire Suppression Contingency Plan (Appendix 1E). Release Prevention 69. In the event of a release of any size, the Contractor shall immediately report and Containment the release to the Environmental Inspector(s) or designate(s). 70. 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 (Appendix 1F). 71. 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 (Appendix 1E).

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Activity/Concern Mitigation Measures Release Prevention 72. All equipment shall arrive on the Project free of leaks and in good working and Containment condition. Any equipment which does not arrive free of leaks and in good (cont’d) working condition shall not be allowed to perform any work until it has been repaired, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use. 73. The Contractor will ensure equipment is monitored regularly and free of fluid leaks. 74. Do not wash equipment or machinery within 30 m of watercourses or waterbodies. 75. Equipment to be used in or adjacent to a watercourse or waterbody will be clean or otherwise free of external grease, oil or other fluids, mud, soil and vegetation, prior to entering the waterbody. 76. 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 (Appendix 1F). 77. 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. Significant Adverse 78. In the event of a release, refer to the Release Contingency Plan (Appendix 1E). Effects on the 79. Contact the Company’s Regulatory Compliance team within 2 hours of a Environment release of any chemical or physical substance at a concentration or volume sufficient to cause or potentially cause an irreversible, or long-term, or continuous change to the environment in a manner that causes harm to human life, wildlife, or vegetation. Equipment Refuelling 80. Conduct refuelling at least 100 m away from any watercourse or waterbody, and Servicing when feasible. 81. Employ the following measures to reduce the risk of fuel releases 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 fuelling. 82. In the event of a release, refer to the Release Contingency Plan (Appendix 1E).

Air Quality/Emissions 83. Reduce idling of equipment, where possible. 84. The Contractor will ensure equipment is well-maintained. 85. Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Dust Control 86. 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. Noise 87. Ensure that noise abatement equipment on machinery is in good working order. Take reasonable measures to control construction related noise near residential areas. Fences 88. Properly brace all fences cut for construction and equip with temporary gates. Temporary gates will be a minimum of three-wire. Keep gates closed, except during passage of vehicles.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

8.2 Clearing and Vegetation Removal

Introduction The following measures will be implemented by the Company’s Contractor during the clearing phase of Project construction.

Objectives The objectives of these environmental protection measures are to:

• restrict the construction footprint to approved workspace; • limit the disturbance to vegetation (i.e., crops and native vegetation) to the extent practical; and • minimize surface disturbance to the extent practical.

Activity/Concern Mitigation Measures Minimal Surface 1. To assist in maintaining an intact ground surface in areas where grading is not Disturbance necessary, implement minimum surface disturbance techniques such as mulching, brushcutters, brushhogs or other equipment. Non-merchantable timber shall be mulched or skidded to the closest burn pile location. 2. Where stripping and grading is not required during frozen ground conditions or in Crown non-agricultural land use, implement minimal surface disturbance techniques in accordance with the typical drawing (Appendix 1D, Dwg. STDS-03-ML-05-445), and as indicated on the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents. Clearing 3. 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. 4. Remove trees that are a safety hazard during construction activity off of the construction footprint, following consultation with the Environmental Inspector(s) or designate(s). 5. Fell all trees damaged during clearing and construction immediately. A damaged tree is defined as one that has fractures or bark loss for 50% of its circumference. 6. Conduct clearing near watercourses or wetlands as described in Section 7.0 and 8.4 of this EPP. 7. During clearing, fell trees towards the construction footprint wherever feasible. Recover trees that inadvertently fall into adjacent undisturbed vegetation. 8. Avoid disturbance to environmentally sensitive features during clearing as identified by the appropriate signage and/or fencing. The Environmental Inspector(s) or designate(s) and appropriate Environmental Resource Specialist will determine the size of avoidance buffer surrounding these features, if appropriate. 9. Where practical, leave stumps in place, particularly on streambanks, to provide surface stability. Stumps that are removed will be used as rollback or will be disposed of by burning or chipping, where approved.

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Activity/Concern Mitigation Measures Known 10. Do not permit clearing in proximity to known archaeological sites unless Archaeological Sites otherwise approved by the responsible regulatory agency. Rollback 11. Where segments of the construction footprint require rollback for access management or erosion control, ensure sufficient timber of appropriate size is available. 12. In consultation with landowner(s) or the responsible regulatory agency, determine potential rollback locations and material to be used, if applicable, in accordance with the typical drawings (Appendix 1D, Dwgs. STDS-03-ML-05- 312 and STDS-03-ML-05-313). 13. Place rollback in a manner that does not create or enhance a fire hazard on the construction footprint. Wet Terrain/Muskeg 14. Where non-frozen soils are encountered during construction, refer to the Wet Soils Contingency Plan (Appendix 1E). Install corduroy, wooden mats or equivalent, or geotextile and soil ramp (excluding topsoil or other surface materials) as approved by the Company, in areas of wet soils to reduce terrain disturbance and soil structure damage. These materials will be removed during clean-up. Merchantable/ 15. Merchantable timber shall be cut and salvaged as outlined within the Timber Salvageable Timber Salvage Plan and to the Forest Management Agreement (FMA) holder’s specifications. All timber shall be cut as close to the ground as feasible to reduce the quantity of woody debris following clearing operations. 16. Do not bulldoze salvageable timber. 17. Suspend timber skidding operations or implement alternative measures if the potential exists for merchantable timber to be damaged through contact with wet or muddy soils. Decking Sites 18. Locate deck sites in previously disturbed areas, wherever practical. 19. In forested lands, avoid stripping and grading at deck sites, unless otherwise directed by the Company. Merchantable timber shall be skidded to the closest log deck (outside of log deck), where timber is to be processed (i.e., de-limbed and topped) and then placed into log deck. Tops and limbs shall be burned on trench line adjacent to the deck location. 20. In freehold and designated crown agricultural lands, salvage topsoil at deck sites, unless otherwise directed by the Company. Grubbing 21. Conduct grubbing only where stripping and grading is required. 22. Grub tree roots, where required, with a hoe and thumb or alternate equipment to preserve surface organic material. 23. Use a stump mulcher rather than grubbing on areas where stripping and grading is not necessary. 24. Reduce grubbing near watercourses, muskeg, and other wet areas to facilitate the restoration of shrub communities.

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Activity/Concern Mitigation Measures Vegetation Disposal 25. Timber and brush disposal options are subject to agreements with landowners, occupants and the responsible regulatory agency where public lands are intersected. 26. Dispose of all timber material not salvaged for merchantability or required for access control and/or erosion control through burning or mulching, unless otherwise directed by the Environmental Inspector(s) or designate(s) and Construction Manager. 27. Obtain applicable permits prior to burning. Follow guidance in the applicable legislation. 28. Do not undertake burning within 100 m of a waterbody, unless otherwise authorized by the Environmental Inspector(s) or designate(s). 29. Implement techniques to limit smoke production including limiting pile size, minimizing moisture content and maintaining loose burning piles with minimal soil. 30. Avoid locating burn piles on peat rich areas where residual fires could persist after construction. Burn piles will be located along trench line or on approved areas where strippings have been removed. 31. If timber and brush are disposed of by mechanical means (i.e., mulching), the maximum depth of mulch is 5cm or in accordance with the applicable provincial legislation, whichever depth is less. Obtain landowner authorization prior to initiating mulching activity on private land.

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8.3 Topsoil/Strippings Salvage and Grading

Introduction Soil will be salvaged as indicated on the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents. Soil salvage depths and handling procedures have been determined through existing land use and/or through field soil surveys to ensure that appropriate material handling procedures are implemented. Topsoil/strippings handling measures for both frozen and non- frozen conditions have been included.

Objectives The objectives of these environmental protection measures are to:

• avoid or reduce impacts of construction on all lands; • maintain equivalent land capability on lands within the construction footprint (excluding aboveground facilities); • minimize effects to soil capability, surface drainage patterns, land use, and wildlife habitat; • comply with commitments made to the landowner or responsible land manager; and • employ environmentally and economically responsible construction practices at all times and in accordance with applicable industry standards.

Activity/Concern Mitigation Measures Minimal Surface 1. Where stripping and grading is not required during frozen ground conditions or Disturbance in Crown non-agricultural land use, implement minimal surface disturbance techniques in accordance with the typical drawing (Appendix 1D, Dwg. STDS-03-ML-05-445) and as indicated on the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents. Snow/surface organic material mixture refers to snow and mulch only. Land Preparation - 2. Arrange for landowners to harvest crops, if practical. Mow, cut or bale any Non-Frozen remaining crops and remove from the construction footprint to facilitate topsoil Conditions handling. (Agricultural Land) 3. Disc the construction footprint prior to topsoil stripping, unless otherwise approved by the Environmental Inspector(s) or designate(s).

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Activity/Concern Mitigation Measures General Topsoil/ 4. Salvage topsoil/strippings as indicated on the Environmental Alignment Strippings Salvage Sheets, Environmental Figures and/or other Project-specific environmental Requirements documents and in accordance with the typical drawings. 5. If wet/thawed soil conditions occur, implement the Wet Soil Contingency Plan (Appendix 1E). 6. Typical drawings for topsoil/strippings handling (non-frozen and frozen) are provided in Appendix 1D of this EPP. 7. Snow and topsoil/strippings will be salvaged and stockpiled separately. 8. 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 for additional information (Appendix 1E). 9. Should high winds or heavy rains damage the tackifier during construction, contingency measures outlined in the Adverse Weather Contingency Plan (Appendix 1E) will be implemented. 10. Should construction traffic or other related construction activity disturb the topsoil/strippings piles and there is a potential for wind erosion, apply additional water and/or tackifier, if warranted. Topsoil Salvage 11. Conduct topsoil salvage on all arable or potentially arable lands to promote Requirements successful reclamation and ensure this resource is returned to an equivalent (Agricultural Land) land capability. 12. Depending on site-specific conditions, including forested agricultural potential land use, topsoil salvage techniques may include full width, blade width, ditch and spoil side, or ditch and work side. The topsoil salvage technique to be used will be determined by the Environmental Inspector(s) or designate(s), Construction Manager, and the appropriate Environmental Resource Specialists, where required. 13. Where full width stripping is not conducted, salvage a greater width of topsoil at sharp sidebends and at crossings of watercourses, roads and foreign lines to accommodate a wider and deeper trench. 14. Topsoil handling procedures may be modified based on the need to meet the objective of protecting the soil resources, as directed by the Environmental Inspector(s) or designate(s). Soil storage areas will be approved by the Environmental Inspector(s) or designate(s). 14. Implement the Soil Handling Contingency Plan (Appendix 1E) if any of the following are encountered: little to no topsoil present; uneven boundary between topsoil and subsoil; uneven surface on pasture; request for alternate soil handling methods by a landowner; or soil pulverization and high winds. 15. A soils specialist will be available as needed to work with the Environmental Inspector(s) or designate(s), inspection team and Contractor to address soils resource issues as they may arise during topsoil stripping operations, as well as during adverse weather conditions to ensure the soils resources are protected and equivalent land capability is maintained.

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Activity/Concern Mitigation Measures Topsoil Salvage 16. Consult with the Environmental Inspector(s) or designate(s) to ensure that Requirements – topsoil stripping activities leading up to the onset of frozen conditions do not Frozen Conditions allow for topsoil/subsoil admixing. Refer to the Soil Handling Contingency Plan for additional information. (Agricultural Land) 17. In the event that topsoil is stripped during frozen conditions, the Environmental Inspector(s) or designate(s) in consultation with the Construction Manager and soils specialist, if warranted, will ensure that proper equipment (i.e., frozen topsoil cutter, grinder or equivalent) is used to minimize the mixing of topsoil and subsoil layers, and the equivalent land capability is maintained. 18. Snow and topsoil will be salvaged and stockpiled separately. Snow Management 19. In the event of excessive snow depths discuss snow management with the responsible regulatory agency. Adverse Weather 20. 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 (Appendix 1E). A soils specialist and/or the responsible regulatory agency may be consulted, if warranted. 21. Following an adverse weather event, the Contractor will confirm the efficacy of sediment and erosion control measures and whether corrective action is required. Grading 22. Undertake all grading with the understanding that original contours and drainage patterns will be re-established during clean-up unless otherwise authorized by the Environmental Inspector(s) or designate(s), or identified on Project-specific drawings. 23. Salvage topsoil/strippings from areas to be graded. 24. Ensure grade material does not spread off the construction footprint. Known 25. Do not permit grading in proximity to known archaeological sites unless Archaeological Sites otherwise approved by the responsible regulatory agency.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

8.4 Watercourse Crossings

Introduction At watercourse crossings, the method of vehicular crossing and pipeline crossing has taken into consideration engineering and constructability requirements, fisheries values and protection of riparian habitats. The environmental protection measures outlined in this section apply to all watercourses identified on the construction footprint. Where watercourses are present, details on specific watercourse crossing protection measures are provided in Table 2.

Objectives The objectives of these environmental protection measures are to:

• avoid or reduce potential adverse impacts; • comply with the fisheries protection provisions of the Fisheries Act; • comply with all provincial and federal regulatory requirements; • comply with all regulatory approval conditions; • employ environmentally responsible construction practices that are technically and economically feasible, in accordance with applicable industry best practices and standards; • maintain equivalent habitat quality at crossing locations; • protect riparian areas in proximity to watercourse crossings; and • maintain the ecosystem function of riparian areas.

Activity/Concern Mitigation Measures Permits and 1. The Company will obtain and follow all applicable federal and provincial Approvals approvals prior to the commencement of construction and in-stream activities. Notification 2. The Company will notify an inspector, fishery officer or prescribed authority of any occurrence that results in serious harm to fish that is not authorized, or when there is an imminent risk of such an occurrence. 3. Ensure all watercourse crossing notifications are completed in accordance with applicable guidelines, environmental protection measures, approval conditions or legislation. Signage 4. Install warning signs along the banks both upstream and downstream of the crossing to caution users of a navigational hazard, where appropriate. 5. Post signs at watercourses immediately following clearing (include name, number and KP). Signs will be posted 100 m from the watercourse or at the top of the valley slope, whichever is greater, to alert the Contractor of the upcoming watercourse.

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Activity/Concern Mitigation Measures Fisheries Timing 6. Refer to Table 2 for the appropriate fisheries timing windows associated with Windows the watercourse crossings traversed by the Project. 7. No construction activity in a watercourse will occur outside of the appropriate fisheries timing window unless: • it is dry or frozen to the bottom at the time of construction; • trenchless techniques are employed; • approval from the responsible regulatory authority is obtained. Riparian Buffers 8. Prohibit clearing of extra TWS within a 10m (minimum) riparian buffer from top of bank of the watercourse. This area shall be clearly marked prior to clearing operations. The ROW will be narrowed through the riparian area, if feasible. 9. Limit clearing of trees and shrubs at watercourse crossings to the trench line and work side areas that are required for vehicle crossings. 10. Fell trees away from watercourses where feasible. Immediately remove trees, debris or soil inadvertently deposited below the high watermark of a watercourse. 11. 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). Grading 12. Delay grading of the primary banks of watercourses until immediately before construction of the crossing. If required, appropriate temporary erosion and sediment control structures shall be installed at the discretion of the Environmental Inspector(s) or designate(s), upon initial disturbance of the vegetative mat and strippings. 13. Direct grading away from waterbodies. Do not place fill material in a waterbody during grading. 14. Ensure that grubbing, stripping and grading on approach slopes to watercourses is restricted to an amount required to allow the safe passage of equipment, excavation of the trench, and installation of the pipeline. 15. Do not allow grading within the 10 m riparian buffer immediately adjacent to the watercourse crossing until installation of the vehicle crossing. Erosion Control 16. Install erosion and sediment control at all watercourses and/or waterbodies as directed by the Environmental Inspector(s) or designate(s) (Appendix 1D, Dwgs. STDS-03-ML-05-001, STDS-03-ML-05-131, STDS-03-ML-05-132, STDS-03-ML-05-137). 17. 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 (Appendix 1E).

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Activity/Concern Mitigation Measures Vehicle Crossings - 18. Do not permit fording of watercourses, unless otherwise approved by the General Company. 19. Where approved by the Company, for the one-time (over and back) fording of equipment without a temporary crossing structure, use streambank and bed protection methods (e.g., matting), as directed by the Environmental Inspector(s) or designate. 20. Construct or install temporary vehicle access across waterbodies, shorelines, and riverbanks in a manner that protects the banks from erosion, maintains the flows in the waterway, and is completed in accordance with applicable guidelines, environmental protection measures, approval conditions or legislation, including applicable DFO Measures to Protect Fish and Fish Habitat (DFO 2019a). 21. Construct/install all watercourse vehicle crossings as outlined in Table 2 and in accordance with the typical drawings (Appendix 1D, Dwgs. STDS-03-ML-05- 101, STDS-03-ML-05-103 and STDS-03-ML-05-104). 22. Construct all bridges (single-span or ice and snowfill) beyond the ends of the banks and with a minimum depth of 0.5m of snowfill or fill material at each bank. Do not place fill within primary banks for bridge abutment construction, unless approved by the responsible regulatory agency. 23. If hauling in of fill material is required during the construction of bridge abutments with wings, place geotextile fabric between the fill material and the surface layer. 24. Line single-span bridges with impervious geotextile. All watercourse crossing structures must have a minimum of 30cm high side boards. Side containment for single span bridges must be constructed of plywood. Snow bridges can use watered snow. 25. Install and remove temporary vehicle crossings in a manner that protects the banks from erosion and maintains flow. Temporary vehicle crossings will be returned to their preconstruction condition. 26. Consider alternate methods of vehicle crossings on a site-specific basis. The decision making process will include the Contractor, Construction Manager and the Environmental Inspector(s) or designate(s). Decision criteria will include protection of the riparian vegetation and fisheries values associated with the crossing, and applicable legislation and approval conditions. Vehicle Crossings – 27. Under frozen conditions, and where conditions permit, employ ice and snowfill Frozen Conditions bridges as temporary crossing structures. Install ice and snowfill bridges using water drawn from an approved source and/or clean snow ploughed in from surrounding areas or produced through snowmaking.

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Activity/Concern Mitigation Measures Vehicle Crossings – 28. If water withdrawal is necessary for the construction of a temporary crossing, Frozen Conditions ensure that necessary provincial approvals are in place and apply DFO (cont’d) Measures to Protect Fish and Fish Habitat. Ensure water withdrawal is in compliance with site-specific permit or license conditions. Pump intakes should not disturb the streambed. Pumps must be screened with a maximum mesh size of 2.54 mm and have a maximum screen approach velocity of less than 0.038 m/s where fish habitat is present. Follow design requirements of DFO interim code of practice: end-of-pipe fish protection screens for small water intakes in freshwater (DFO 2019). 29. Use only clean ice/snow for construction of an ice/snowfill or ice bridge. Approaches to the bridge will be constructed with compacted snow and ice of sufficient thickness to protect the stream channel and banks. Sand, gravel and soils are not to be used for ice bridge approaches. 30. Ensure that ice bridges or snowfills do not interfere with or impede winter flows. 31. Snowfills and ice bridges shall be regularly maintained to remove soil, mud and other debris prior to affecting water quality, as directed by the Environmental Inspector or designate(s). 32. If conditions will not support the construction of ice bridges or snowfills, then employ other temporary crossing structures approved by the Environmental Inspector(s) or designate. Beaver Dams and 33. In the event that beaver dams or lodges will be disturbed or removed, provide Lodges notification to or obtain the necessary permits from the responsible regulatory agency prior to commencing activities, if required. Engage the registered trapper(s). 34. Breach the beaver dam slowly to avoid the rapid release of water that could cause flooding, fish entrapments and/or erosion of the bed and banks resulting in subsequent siltation of downstream waters. Watercourse 35. The Contractor shall develop a detailed site-specific watercourse crossing plan Crossing Plans and submit the plan to the Company for approval prior to initiating watercourse crossing activities. Pipeline Installation 36. Complete watercourse crossings in a timely manner. Before the installation of the watercourse crossing and the commencement of instream activity, the Contractor will ensure that all necessary equipment and materials are available and are onsite. 37. Construct/install all pipeline crossings as outlined in Table 2 and in accordance with the typical and/or Project-specific drawings (Appendix 1D). 38. Develop water quality monitoring plans to monitor for sediment events during instream construction activities, where required by the applicable regulatory approvals or as identified by an Aquatic Resource Specialist. If monitoring reveals sediment values are approaching threshold values, the water quality monitors will alert the Environmental Inspector(s) or designate(s) and work with them to develop corrective actions. If corrective actions are not successful, construction activities will be temporarily suspended until effective solutions are identified.

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Activity/Concern Mitigation Measures Pipeline Installation 39. The Contractor shall weld, coat, and weight the portion of the pipe crossing the (cont’d) watercourse prior to starting instream trenching activities. To reduce the length of time of instream activity, the Contractor shall trench, lower-in, and backfill water crossings during the same working day, unless otherwise approved by the Company. 40. When implementing a trenched (i.e., open cut or isolated) pipeline installation method, and where practical, salvage the upper 0.5m (minimum) of granular material if present. Stockpile separately from the remainder of the trench spoil so that the salvaged, native granular material can be used to cap the upper portion of the trench. 41. If spoil is likely to be highly saturated, excavate a pit or construct berms of packed earth to prevent spoil from flowing back into the watercourse. Locate containment berms and spoil outside of the 10m riparian buffer area (Dwg. STDS-03-ML-05-131). 42. Ensure that the hydraulic, fuel and lubrication systems of equipment working instream are in good repair. 43. Ensure no vehicles or equipment, which contain petroleum, oil, or lubricants are parked or stationed in a watercourse at any time except for equipment that is required for that immediate phase of construction. Typical Open Cut 44. Conduct typical open cut of seasonally dry or frozen to the bottom watercourses Crossings and drainages in accordance with applicable DFO Measures to Protect Fish and Fish Habitat. Refer to Appendix 1D, Dwg. STDS-03-ML-05-105. 45. Store excavation material outside the watercourse during the open cut. Isolated Open-Cut 46. Refer to Table 2 for locations where an isolated crossing method is proposed. Crossings Refer to Appendix 1D, Dwgs. STDS-03-ML-05-111 and STDS-03-ML-05-112. 47. Conduct isolated crossings of watercourses in accordance with applicable DFO Measures to Protect Fish and Fish Habitat. 48. Do not use earthen berms to isolate the crossing construction area. 49. Ensure maintenance of downstream flow at all times when constructing an isolated crossing. 50. Ensure water from flumes, dam and pumps, diversion or other methods do not cause erosion or introduce sediment into the channel. 51. Ensure water and pump intakes avoid or reduce disturbance of the streambed and are screened with a maximum mesh size of 2.54 mm and approach velocity of 0.038 m/s. Follow design requirements of DFO interim code of practice: end-of-pipe fish protection screens for small water intakes in freshwater. To accomplish this, where pumps larger than 15 cm diameter are used, place the intakes in a mesh cage (2.54 mm) to reduce the approach velocity that fish are exposed to and prevent them from being impinged on the intakes. Maintain the screens free of debris. If a deeper sump is required for success of the isolated crossing refer to Environmental Inspector(s) or designate(s).

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Activity/Concern Mitigation Measures Fish Salvage 52. Obtain the required permits for conducting fish salvage, prior to conducting instream work.

53. The Contractor shall notify the Company 72 hours before construction of any watercourse crossing or diversions to ensure fish salvage operations are conducted, where required. 54. If an isolated method is employed, and where recommended by a qualified environmental professional, conduct a fish salvage led by an Aquatic Resource Specialist (i.e., Qualified Aquatic Environmental Specialist or provincial equivalent). 55. Conduct fish salvage, in accordance with permit conditions, using appropriate methods and equipment. Release all captured fish to areas downstream of the crossing that provide suitable habitat. Trenchless Crossings 56. Conduct trenchless crossings in accordance with the applicable sections of the (also applies to Trenchless Crossing Management Plan (Appendix 1F). trenchless crossings 57. For pipeline crossings conducted using a trenchless crossing method, apply of facilities or applicable DFO Measures to Protect Fish and Fish Habitat. infrastructure) 58. Excavate entry and exit sites back from the ordinary high watermark and far enough from the watercourse to provide for containment of sediments and other deleterious substances above the high watermark. Vegetation removal for the entry and exit sites is only to occur within the approved construction footprint. 59. Ensure that water from dewatering entry and exit sites with a high sediment load is not discharged or allowed to flow into any waterbody. Remove the sediment load (e.g., filter or discharge into a vegetated area) before discharge water is allowed to enter any watercourse. 60. Where warranted, develop a water quality monitoring plan with input from an Aquatic Resource Specialist that includes monitoring for TSS and/or turbidity if trenchless methods are used. 61. Prior to the start of the drill, ensure that the Contractor’s Horizontal Directional Drill Execution Plan is consistent with the Trenchless Crossing Management Plan and the Drilling Mud Release Contingency Plan. 62. In the event of sediment or deleterious substance releases during the construction of the trenchless crossings implement the Drilling Mud Release Contingency Plan (Appendix 1E). 63. Dispose of all waste drilling fluid and drilling solids according to and in conformance with Project plans and pertinent regulatory requirements. Flood and Excessive 64. Assess the capability to handle the expected flow rate with the proposed Flow crossing method. 65. If use of the proposed crossing method is determined to be feasible by the Company, the crossing will proceed. 66. If use of the proposed crossing method is determined NOT to be feasible by the Company due to excessive flows or flood conditions, follow the Flood and Excessive Flow Contingency Plan (Appendix 1E).

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Activity/Concern Mitigation Measures Backfill Trench 67. Place only imported clean coarse material (gravel or rock), or native material removed from the trench, as the final 0.5 m of backfill. Imported material must be obtained from a Company approved off-site facility. Reclamation 68. Return the bed and banks of each watercourse as close as feasible to their original preconstruction contours. Do not realign or straighten watercourses or change their hydraulic characteristics. 69. Implement permanent bank reclamation measures to re-establish riparian vegetation and fish habitat as a part of backfill operations (Refer to Appendix 1D, Dwgs. STDS-03-ML-05-601, STDS-03-ML-05-602, STDS-03- ML-05-603, STDS-03-ML-05-604, STDS-03-ML-05-606 and STDS-03-ML-05- 608). Biodegradable materials shall be utilized unless otherwise specified by the Company. 70. Seed disturbed banks and riparian areas with an approved native seed mixture and/or cover crop as directed by the Environmental Inspector(s) or designate(s). The Environmental Inspector(s) or designate(s) will determine onsite whether other restoration methods need to be applied to stabilize banks (e.g., soil wraps, brush layers and matting).

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TABLE 2: SUMMARY OF WATERCOURSE CROSSINGS

UTM UTM Temp. Temp. Watercourse Historical Species Crossing Coordinates Coordinates Watercourse/ Fish Fish Habitat Vehicle/Equipment Vehicle/Equipment Section Class/Restricted Presence Comments/Notes ID (Zone 11) - (Zone 11) - Legal Description Inventory3 Description Crossing - Open Crossing - Frozen/Dry Activity Period1 (FWIMT2) Easting Northing Water Conditions Conditions ARGR, BKTR, BLTR, Narrow channel (<2.5 m); shallow BRST, BURB, FNDC, Fish salvage and water quality Unnamed Tributary to depths (<0.3 m); habitat primarily class 3 C – Sept. 1 to LKCH, LNDC, LNSC, No fish captured during Clear span bridge Clear span bridge monitoring recommended if R-WC01A.2 Robb 530705 5934072 McLeod River/ run; riffle habitat limited; substrate June 30 MNWH, NRPK, PRDC, field surveys (STDS-03-ML-05-101) (STDS-03-ML-05-101) water present; not required if SE 11-053-18-W5M composed of fine materials; low fisheries RNTR, SLSC, SPSC, dry or frozen to bottom potential TRPR, WALL, WHSC ARGR, BKTR, BLTR, Narrow channel (<2.5 m); shallow BRST, BURB, FNDC, Fish salvage and water quality Unnamed Tributary to depths (<0.3 m); habitat primarily class 3 C – Sept. 1 to LKCH, LNDC, LNSC, No fish captured during Clear span bridge Clear span bridge monitoring recommended if R-WC01A.3 Robb 530600 5933955 McLeod River/ run; riffle habitat limited; substrate June 30 MNWH, NRPK, PRDC, field surveys (STDS-03-ML-05-101) (STDS-03-ML-05-101) water present; not required if SE 11-053-18-W5M composed of fine materials; low fisheries RNTR, SLSC, SPSC, dry or frozen to bottom potential TRPR, WALL, WHSC No fish captured during Dry within construction area with limited Culvert (STDS-03-ML- Icebridge (STDS-03- All crossing types can be Didsbury field surveys (fished channel development; no indication of To be Hicklon Creek/ NE and 05-103) or clear span ML-05-104) or clear installed at any time without Compressor To be determined D – no RAP No fish data connected dugout ~400 m fluvial scour or deposition and is typical determined SE 29-30-02 W5M bridge (STDS-03-ML- span bridge (STDS-03- isolation and without QAES4 Station downstream of proposed of a vegetated swale; no fisheries 05-101) ML-05-101) recommendations construction area) potential

Notes: 1 Alberta Environment and Parks (AEP) Code of Practice class of waterbody: Class C = moderate sensitivity; habitat areas are sensitive enough to be potentially damaged by unconfined or unrestricted activities within a waterbody; broadly distributed habitats supporting local fish species populations. Class D = low sensitivity; fish species as defined under the Code of Practice not present. 2 According to AEP’s Fish and Wildlife Internet Mapping Tool (FWIMT). 3 Fish inventory surveys were not conducted at sites with available historical information; sites without historical information may not have been fished due to poor site conditions (e.g., too shallow/too narrow of a channel). 4 QAES = Qualified Aquatic Environmental Specialist. ARGR = Arctic grayling; BKTR = brook trout; BLTR = bull trout; BRST = brook stickleback; BURB = Burbot; FNDC = finescale dace; LKCH = lake chub; LNDC = longnose dace; LNSC = longnose sucker; MNWH = mountain whitefish; NRPK = northern pike; PRDC = pearl dace; RNTR = rainbow trout; SLSC = slimy sculpin; SPSC = spoonhead sculpin; TRPR = trout perch; WALL = walleye; WHSC = white sucker. Bolded = Athabasca population of rainbow trout is listed under Schedule 1 of the Species at Risk Act. Also see general watershed mitigation measures listed in Table 1.

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8.5 Pipe Activities (Trenching, Stringing, Bending, Coating, Lowering-In)

Introduction The following environmental protection measures will be implemented on Projects that include pipe installation as a component of the Project, during trenching, stringing, bending, coating and lowering-in activities.

Objectives The objectives of these environmental protection measures are to:

• prevent impacts to watercourses and waterbodies; • reduce interference with other land uses; and • prevent harming wildlife.

Activity/Concern Mitigation Measures Wet Soils 1. Implement the Wet Soils Contingency Plan (Appendix 1E), as required. Soil Pulverization 2. Where pulverization of soils has the potential of causing soil loss or long-term structural impact, refer to the Soil Handling Contingency Plan (Appendix 1E). Trenching 3. To facilitate free movement of livestock and wildlife, follow trenching operations as closely as feasible with lowering-in and backfill operations, unless for construction purposes there is a need to have the trench open for an extended period of time. 4. Minimize the amount of open trench at any one time. 5. 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. 6. As trenching proceeds, identify areas of potential trench wall instability that may affect unstripped topsoil areas. Strip a wider area if the trench walls slough into the trench and the potential for mixing of topsoil and subsoil exists. Back slope trench wall until stable. 7. If unstripped topsoil is sloughing into the trench, suspend trenching operations until the topsoil is stripped wide enough to prevent loss. Spoil Handling 8. Place spoil to maintain an adequate separation between topsoil/strippings and subsoil piles. Avoid overlap of the spoil and topsoil in agricultural lands. If the potential of overlap is identified, move the topsoil, or in some space restricted cases, protect with a geotextile cover. 9. Where construction occurs under frozen conditions, do not mix snow with spoil material.

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Activity/Concern Mitigation Measures Water Management 10. Monitor water levels in all open trenches. 11. Where practical, grade the construction footprint to divert surface water away from the open trench. 12. Where the open trench has the potential to dewater a wetland, undertake trenching in a manner that prevents the flow of water along the trench. Welding Waste 13. Collect shavings continuously as beveling proceeds. Collect all welding refuse generated by each welding rig and dispose of at an approved waste facility. Coating 14. Where spray or paint-on coatings are applied, use a tarp or alternative device of sufficient size to block coating from contacting the ground. Clean-up coating that comes in contact with the ground.

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8.6 Backfill

Introduction The following environmental protection measures will be implemented during pipeline and/or facility backfill operations.

Objectives The objectives of these environmental protection measures are to:

• protect the pipeline and/or other underground facilities and prevent trench subsidence; • ensure excavated materials from the trench are replaced and properly compacted; and • properly re-establish surface and subsurface drainage.

Activity/Concern Mitigation Measures Padding 1. Do not use topsoil/strippings as backfill under any circumstances. 2. Where sand padding has been employed on agricultural land resulting in excess spoil, remove the displaced spoil that cannot be adequately feathered out on the construction footprint to an approved location. Rock in Backfill 3. Do not backfill large rocks into the upper 0.5 m of the trench on agricultural lands. 4. Pick all rocks greater than 10cm in width in the top 30cm of subsoil and remove from the construction footprint, unless otherwise directed by the Environmental Inspector(s) or designate(s). On forested land, rock and root picking will be in accordance with landowner or regulatory agency guidance. Backfill Trench 5. In agricultural areas, avoid scalping the sod layer in pasture and hay land during backfill. 6. Backfill the trench as soon as practical, following lowering-in, to minimize hazards to wildlife. 7. Place spoil back into the trench in such a way as to prevent loss or mixing of topsoil/strippings. Winter Construction 9. Do not mix snow with spoil material during backfill. 10. To reduce the potential for subsidence, roach all available spoil over the trench to allow for settlement. If necessary, rework spoil material to break-up frozen clumps prior to backfilling the trench. 11. Do not attempt to compact trench material until it has completely thawed. 13. Leave openings in the trench crown and all windrows at appropriate locations to allow for temporary and permanent cross drainage. 14. Ensure that all backfill is complete prior to spring break-up, unless otherwise authorized by the Company.

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Activity/Concern Mitigation Measures Trench Compaction- 15. Backfill trench material in lifts and compact after each lift. Non-Frozen Conditions 16. Return all excavated material back into the trench minus the displacement of the pipe and other pipeline materials, such as weights. 17. Feather out spoil material displaced by the pipe and other pipeline materials that will not fit back into the trench, across the stripped portion of the ROW with a maximum 10cm crown measured over the trench line.

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8.7 Hydrostatic Testing

Introduction Hydrostatic testing is the use of water to pressure test sections of pipe. Water is typically withdrawn from nearby dugouts, lakes, watercourses, or municipal sources in accordance with applicable permits for withdrawal of water. Alternative test and drying mediums (e.g., glycol or methanol) may be required.

Objectives The objectives of these environmental protection measures are to:

• ensure pressure testing activities are conducted in accordance with all approval conditions, and applicable commitments to stakeholders (e.g., municipalities; regulators), landowners and Aboriginal groups; • minimize effects to watercourses, wetlands and contamination of agricultural soils.

Activity/Concern Mitigation Measures Permits and 1. Conduct all hydrostatic testing activities in accordance with all applicable Approvals federal and/or provincial legislation and approval conditions, including the handling, containment and disposal of all test and drying mediums used. 2. The Contractor shall provide a hydrostatic test plan for approval by the Company, as specified in the contract documents. The Contractor’s test plan shall include the water withdrawal sources and associated access, volumes, water conveyance methods and discharge locations. Water Withdrawal 3. Ensure water withdrawal is conducted in compliance with site-specific approval conditions. Isolate Pumps 4. Ensure any leaks in the fill and discharge lines are controlled to prevent erosion. Screen Intake 5. Screen all water intakes in accordance with the intermittent code of practice: end-of-pipe fish protection screens for small water intakes in freshwater. Maintain screens so they are clear of debris. Dewatering 6. Where applicable, shunt test water ahead from test section to test section to the extent practical to minimize water hauling, water usage and number of dewatering points. 7. Prior to discharge of hydrostatic test water, ensure that the appropriate testing and treatment measures are implemented in accordance with local regulatory requirements.

8. Discharge hydrostatic test water into the same drainage basin from which it was withdrawn, unless otherwise approved by the responsible authority.

9. Discharge water into a well-vegetated area. Provide scour protection and an energy diffuser at the discharge site as directed by the Company. 10. Preserve water quality, including preventing the introduction of foreign material (debris, sediment, etc.) into the receiving waterbody / watercourse. 11. Monitor the discharge area for erosion and sedimentation.

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8.8 Clean-Up and Reclamation

Introduction Clean-up and reclamation are important steps in returning the construction footprint to a condition similar to preconstruction. For winter construction within Crown non-agricultural lands, clean-up is generally a two- phase process, with machine clean-up being completed immediately following construction, and final clean- up occurring the following winter, or as soon as conditions permit. For winter construction within freehold and designated crown agricultural lands, clean-up is generally a two-phase process, with machine clean- up being completed immediately following construction, and final clean-up occurring the following summer, or as soon as conditions permit. For summer construction, clean-up is generally completed immediately following construction, or as soon as conditions permit.

Objectives The objectives of these environmental protection measures are to:

• effectively use reclamation techniques that prevent topsoil/strippings loss from wind and water erosion; • establish a vegetative cover compatible with surrounding vegetation and land uses; • comply with approval conditions, including permits and landowner commitments; • re-establish the construction footprint to a stable condition acceptable for operational requirements; and • maintain equivalent land capability on lands within the construction footprint (excluding aboveground facilities), ensuring the ability of the land to support various land uses similar to the uses that existed before construction, but not necessarily identical.

Activity/Concern Mitigation Measures Clean-Up Schedule 1. Machine clean-up activities will follow completion of construction activities as closely as feasible. 2. 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. 3. In freehold and designated crown agricultural lands, schedule final clean-up to occur under non-frozen conditions, when soil moisture conditions permit. 4. If reclamation is postponed, contact the relevant regulatory agencies and landowners before the initiation of the reclamation activities and notify upon completion, as required. Schedule – Migratory 5. In the event clean-up activities are scheduled to occur within the Primary Birds Nesting Period for the Bird Conservation Region for migratory birds, refer to the Breeding Bird and Nest Management Plan (Appendix 1F). Level of Clean-up 6. The level of clean-up on all lands will ensure equivalent land capability is maintained. Staking 7. Remove all flagging and signage from the Project area and dispose of it appropriately following the completion of construction.

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Activity/Concern Mitigation Measures Matting 8. Remove all matting and geotextile and other materials from all locations on the construction footprint following clean-up, once site conditions are deemed stable. Wet Soils 9. If saturated conditions exist at the time of clean-up refer to the Wet Soils Contingency Plan (Appendix 1E). If necessary, suspend final clean-up activity until soil conditions are appropriate. Secondary Stripping 10. Where trenching occurred during frozen ground conditions, and where reduced (Agricultural Land) width topsoil stripping was conducted, final clean-up will require stripping of a wider area (secondary stripping) to maintain land capability. 11. Strip back topsoil on both sides of the trench line to ensure sufficient space is available for trench compaction, feathering excess soil, and subsoil preparation. 12. Once subsoil preparation is complete, replace topsoil uniformly over the stripped area. Grade Replacement 13. Replace grade material to preconstruction contours, except if otherwise specified in the contract document or directed by the Company. 14. Re-establish surface drainage patterns; install drainage and erosion control measures, and complete the installation of sedimentation control measures at all watercourse crossings. Grade Replacement – 15. Some regrading under non-frozen conditions may be required to touch up areas Frozen Conditions and to ensure pre-disturbance contours are maintained. Compacted Subsoils 16. 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. 17. In areas where the topsoil is in place, use special equipment such as a paratiller to relieve compaction with reduced potential for admixing at the discretion of the Environmental Inspector(s) or designate(s) in consultation with the Construction Manager. Subsoil Preparation 18. Re-grade areas with vehicle ruts or erosion gullies. 19. Smooth and level the ripped subsoil surface to prevent admixing of subsoil and topsoil/strippings during replacement. Trench Compaction 20. Where trenching has been conducted under frozen ground conditions, delay final trench compaction until the subsoil has completely thawed. 21. Backfill trench material in lifts and compact after each lift. 22. Return all excavated material back into the trench minus the displacement of the pipe and other pipeline materials, such as weights. Trench Crown – 23. Feather out spoil material displaced by the pipe and other pipeline materials Agricultural Land that will not fit back into the trench across the stripped portion of the ROW with a maximum 10 cm crown measured over the trench-line.

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Activity/Concern Mitigation Measures Root and Rock 24. On freehold or designated crown agricultural lands, pick rocks and roots to an Picking equivalent size and distribution of that on adjacent land, unless otherwise directed by the Environmental Inspector(s) or designate(s). 25. Dispose of all rock material collected at an appropriate location off of the construction footprint, as directed by the Environmental Inspector(s) or designate(s). Topsoil/Strippings 26. Replace topsoil/strippings to a uniform depth, on all portions of the construction Replacement footprint that were stripped. Match topsoil/strippings depth to the unstripped edges of the construction footprint. 27. On freehold or designated crown agricultural lands, if construction occurs under frozen ground conditions, delay topsoil/strippings replacement until the topsoil/strippings pile and trench spoil has completely thawed. 28. Postpone replacement of topsoil/strippings during wet weather or high winds to prevent erosion and/or damage to the soil structure. Cultivation 29. On agricultural land, disc or cultivate the areas on which topsoil has been replaced to restore soil tilth, unless otherwise approved by the Environmental Inspector(s) or designate(s). Cultivation depth will not exceed the topsoil depth. 30. Under extremely dry soil conditions use a cultivator, rather than a disc. Access Removal 31. Remove bar ditch ramps and reclaim all temporary access trails and shoo-flies to stable conditions. Re-contour to preconstruction conditions and seed accordingly. 32. Remove all mats and ramps used so that they do not impede the restoration of natural drainage patterns. 33. Remove all temporary vehicle crossing structures. Ensure that removal of access does not disturb the bed or banks at the crossing. Access Removal – 34. Remove all temporary vehicle crossing structures, prior to spring break-up. Frozen Conditions Remove or breach snow or ice bridges to ensure they do not impede flow. Cover Crop 35. Use a cover crop to assist in weed and erosion control where warranted, or where requested by the landowner. Apply cover crops to the approach slopes of all water crossings where there is a risk of wind and water erosion. Seeding and 36. Use only Certified No. 1 seed, unless Certified No. 1 is not available for select Revegetation reclamation seed species (i.e., native species). 37. Certificates of Analysis for all components of seed mixes and cover crops shall be reviewed by the Company. Individual seed components shall not be used or blended to specified mixes until approval is provided by the Company. 38. Seeding will follow as close as feasible to final clean-up and topsoil/strippings replacement pending seasonal or weather conditions. 39. 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. 40. Landowners are responsible for seeding cultivated lands.

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Activity/Concern Mitigation Measures Seeding and 41. Natural recovery is the preferred method of reclamation in non-agricultural Revegetation (cont’d) 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). 42. 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. 43. Use natural recovery in wetlands unless otherwise specified by the Company. 44. Restrict vehicle access over newly seeded areas. Seed Mix Application 45. Use broadcast application on steep terrain, forested areas, fence lines, road ditches, watercourse banks, etc. 46. Apply seed at a rate of 8-14 kg/ha for drill seeding and 15-35 kg/ha for broadcast seeding. Drill seeding is the primary method of seed application in freehold and designated crown agricultural lands, unless otherwise specified by the Environmental Inspector(s) or designate(s). Sedimentation/ 47. Remove unnecessary silt fence or other temporary erosion control measures Erosion Control not required, as specified by the Environmental Inspector(s) or designate(s). 48. Install sedimentation and erosion control measures, where required, in accordance with Dwgs. STDS-03-ML-05-001, STDS-03-ML-05-132, STDS-03- ML-05-603, STDS-03-ML-05-604, STDS-03-ML-05-606 and STDS-03-ML-05- 608 in Appendix 1D, unless otherwise approved by the Environmental Inspector(s) or designate(s) to adjust for site conditions and suitability. 49. The Environmental Inspector(s) or designate(s) will determine the location of sedimentation and erosion control measures. 50. Install cross ditches and berms on moderately steep and steep slopes on pasture, bush and forested lands in order to prevent runoff and subsequent erosion. Install berms in accordance with the typical drawings (Appendix 1D, Dwgs. STDS-03-ML-12-221 or STDS-03-ML-12-222) 51. Biodegradable materials shall be utilized for installation of permanent sedimentation and erosion control measures, unless otherwise specified by the Company. Straw Crimping 52. Straw crimping may be used to prevent wind erosion and reduce evapotranspiration on pasture, cultivated lands, and erosion prone soils as specified by the Environmental Inspector(s) or designate(s). 53. To prevent the introduction or spread of listed weeds, inspect all potential source locations for listed weeds before procurement of the straw.

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Activity/Concern Mitigation Measures Rollback 54. Install rollback as specified by the Environmental Inspector(s) or designate(s) and approved by the responsible regulatory agency or the landowner. 55. Rollback slash and small diameter, non-merchantable timber on erosion prone slopes. Walk down erosion control rollback with a dozer. (Refer to Appendix 1D, Dwg. STDS-03-ML-05-313). 56. Install rollback to prevent access along portions of the construction footprint as directed by the Environmental Inspector(s) or designate(s). Spread evenly over the construction footprint. Do not walk over access control rollback. (Refer to Appendix 1D Dwg. STDS-03-ML-05-312). Tackifiers 57. The Environmental Inspector(s) or designate(s) will determine locations where tackifier will be used, if required. 58. Review areas where tackifier has been applied and other potential erosion areas to ensure soils stabilization is effective where topsoil piles/windrows are left in place through winter construction and spring thaw. Follow-up monitoring and applications will be conducted as required. Fencing 59. Install fencing to exclude livestock where required. Discuss fencing options with landowners and occupants. 60. All fences will be replaced and will match the number of wires in the connecting fence. 61. New posts and bracing will be installed to match the connecting fence. Burn Piles 62. Confirm burn piles are properly extinguished. Conduct infrared scanning of burn pile locations to locate hot spots. Weed Control 63. Implement Post-Construction Monitoring and treat listed weed infestation on the construction footprint as needed.

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9.0 POST-CONSTRUCTION MONITORING

Objectives The objectives of Post Construction Monitoring (PCM) are to:

• assess the success of environmental protection measures implemented during construction; • visually inspect the Project Footprint to capture previously unidentified environmental issues; • recommend remedial measures, if warranted, to be implemented to address outstanding environmental issues in a timely manner; • review the success of re-establishing equivalent land capability; and • document opportunities for procedural learnings and continuous improvement.

Process The Project will follow the Company’s PCM methodology as outlined in the ESA and/or other Project- specific environmental documents, which ensures compliance with specific reclamation performance expectations and applicable regulatory requirements. Mitigation methods will be based on the principle that success of land reclamation is measured against adjacent representative site conditions while taking into consideration the status of reclamation of the time of assessment.

Preliminary assessments are conducted during the most appropriate time of the season, which depends on the various biophysical resources and their growth stage or life cycle. This is usually in the spring/summer, and involves identifying deficiencies and proposing recommendations for corrective actions.

The methodology may entail specifically designed evaluation criteria depending on the concerns and issues that were highlighted through the ESA and/or other Project-specific environmental documents, or encountered during the construction process. Seasonal influences and/or species lifecycle or habitat periods may require evaluations to be conducted during specific periods throughout the year.

Deficiencies discovered or opportunities for enhancement will result in developing proposed recommendations for corrective actions. The remedial actions are to be implemented as soon as practical during the most appropriate season, preferably summer, but may be outside this period due to environmental timing restrictions (e.g., reproductive periods, migration periods), field and weather conditions, or concerns expressed by stakeholders, landowners and Aboriginal groups. A final assessment would then be scheduled for the fall, or as deemed appropriate to ensure the remedial actions are stable and successful.

Areas of terrain or slope instability will be monitored on a routine basis for the life of the pipeline and/or facility, as needed. Remedial work will be conducted where warranted to protect pipeline and/or facility integrity.

The construction footprint will be inspected during operations to identify areas of erosion, as required. Remedial work will be conducted where warranted to protect pipeline and/or facility integrity in a timely manner.

Areas that are susceptible to erosion or difficult to revegetate (e.g., due to high salinity) will be identified, and records maintained of remedial measures implemented and the success of these measures. This information will be made available to construction Contractors and supervisors prior to and during operation and maintenance activities to allow implementation of adaptive mitigation management strategies to minimize impacts on soil and soil capability

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The Company will record locations of issues identified during construction related to listed weeds, vegetation establishment, general construction footprint conditions, water crossing stability, regeneration of wetlands, and reclamation success. This issues list will identify the success of environmental protection measures used during Project construction, and to ensure outstanding issues are investigated, resolved and reported during PCM for the Project.

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10.0 REFERENCES CAPP (Canadian Association of Petroleum Producers). 2004. Planning Horizontal Directional Drilling for Pipeline Construction. CAPP Guideline, Publication No. 2004-0022. Prepared by TERA Consultants. September 2004.

CAPP, CEPA and CGA (Canadian Association of Petroleum Producers, Canadian Energy Pipeline Association, and Canadian Gas Association). 2012. Pipeline associated watercourse crossings, 4th Edition. Prepared by TERA Environmental Consultants. Calgary, AB. 217 pp.

Canada Energy Regulator (CER). 2019. Canada Energy Regulator Act. Available from: https://laws- lois.justice.gc.ca/eng/acts/C-15.1/.

CEPA. 2013. Migratory Birds Convention Act: A Best Management Practice for Pipelines. Draft for Discussion. Prepared by Stantec Consulting Ltd. Available at: http://www.cepa.com/wp- content/uploads/2014/01/Migratory-Birds-Sept-26-2013-for-Publication.pdf.

CSA (Canadian Standards Association). 2015. CSA Z662-15: Oil and Gas Pipeline Systems.

DFO. 2019. Interim code of practice: end-of-pipe fish protection screens for small water intakes in freshwater. Available at: http://www.dfo-mpo.gc.ca/pnw-ppe/codes/screen-ecran- eng.htmlhttp://www.dfo-mpo.gc.ca/Library/223669.pdf

Environment Canada. 1994. Migratory Birds Convention Act. Available at: https://laws- lois.justice.gc.ca/PDF/M-7.01.pdf

Environment Canada. 2013a. Birds Protected in Canada Under the Migratory Birds Convention Act, 1994 and Regulations. Website: http://www.ec.gc.ca/nature/default.asp?lang=En&n=496E2702-1

Environment Canada. 2013b. Guide for Developing Beneficial Management Practices for Migratory Bird Conservation. Website: https://www.canada.ca/en/environment-climate-change/services/avoiding- harm-migratory-birds/developing-beneficial-management-practices.html

Environment Canada. 2014. General Nesting Periods of Migratory Birds in Canada. Website: https://www.canada.ca/en/environment-climate-change/services/avoiding-harm-migratory- birds/general-nesting-periods/overview.html

Environment Canada. 2015a. Incidental Take of Migratory Birds in Canada. Available at https://www.ceaa- acee.gc.ca/050/documents/p80054/121249E.pdf

Environment Canada. 2015b. Avoidance Guidelines. Website: https://www.canada.ca/en/environment- climate-change/services/avoiding-harm-migratory-birds/guidelines.html

Environment Canada. 2015c. Technical Information: Risk Factors for Migratory Birds. Website: https://www.canada.ca/en/environment-climate-change/services/avoiding-harm-migratory- birds/reduce-risk-migratory-birds.html

Environment Canada and Climate Change. 2017. Safeguarding Migratory Birds: Technical Information. Website: https://www.ec.gc.ca/paom-itmb/default.asp?lang=En&n=8D910CAC-1#_03

GOA (Government of Alberta). 2017. Master Schedule of Standards and Conditions. June 28, 2017.

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GOA. 2012. Caribou Protection Plan Guidelines and Caribou Calving Information. Integrated Resource Management Planning Division. September 14, 2012.

GOA. 2011. Recommended Land Use Guidelines for Protection of Wildlife Species and Habitat within Grassland and Parkland Natural Regions of Alberta. Fish and Wildlife Division, Alberta Sustainable Resource Development. April 28, 2011. 5 pp.

GOA. 2014. Environmental Quality Guidelines for Alberta Surface Waters. Available at: http://esrd.alberta.ca/water/education-guidelines/documents/EnvironmentalQualitySurfaceWaters- 2014.pdf

GOA. 2013. Integrated Standards and Guidelines – Enhanced Approval Process (EAP). Effective April 1, 2013. Available at: http://srd.alberta.ca/FormsOnlineServices/EnhancedApprovalProcess/ EAPManualsGuides/documents/EAP-IntegratedStandardsGuide-Mar28-2013.pdf

GOA. 2012. Forests Act Timber Management Regulation. Alberta Regulation 60/1973, with amendments up to and including Alberta Regulation 170/2012. Available at: http://www.qp.alberta.ca/ documents/Regs/1973_060.pdf

GOA. 2006a. Code of Practice for Pipelines and Telecommunications Lines Crossing a Water Body. Available at: http://www.qp.alberta.ca/documents/codes/PIPELINE.PDF

GOA. 2006b. Code of Practice for the Temporary Diversion of Water for Hydrostatic Testing of Pipelines. Available at: http://www.qp.alberta.ca/documents/codes/DIVERSE.PDF

GOA. 2006c. Code of Practice for Watercourse Crossings. Available at: http://www.qp.alberta.ca/ documents/codes/CROSSING.PDF

GOA. 2000a. Forest and Prairie Protection Act. Chapter F-19 current as of May 27, 2013. Available at: http://www.qp.alberta.ca/documents/Acts/F19.pdf

GOA. 2000b. Wildlife Act, Revised Statutes of Alberta 2000, Chapter W–10. Current as of May 29, 2012. Available at: http://www.qp.alberta.ca/documents/Acts/w10.pdf

GOA. 2000c. Historical Resources Act. Chapter H-9. Current as of June 12, 2013. Available at: http://www.qp.alberta.ca/documents/Acts/h09.pdf

GOA. 2000d. Environmental Protection and Enhancement Act. Chapter E-12. Current as of December 17, 2014. Available at: http://www.qp.alberta.ca/documents/Acts/E12.pdf

GOA (Government of Alberta). 1999. Code of Practice for the Release of Hydrostatic Test Water from Hydrostatic Testing of Petroleum Liquid and Gas Pipelines. Available at: http://www.qp.alberta.ca/documents/codes/RELEASE.PDF

GOC (Government of Canada). 2012. Canadian Environmental Assessment Act, 2012, SC 2012, c 19, s 52, http://laws-lois.justice.gc.ca/eng

GOC. 2002. Species at Risk Act. S.C. 2002, c.29. Assented to 2002-12-12. Available at: http://laws- lois.justice.gc.ca/eng/acts/S-15.3/index.html

GOC. 1985a. Navigation Protection Act. R.S.C., 1985, c. N-22. Last amended on April 1, 2014. Current to November 16, 2015. Available at: http://www.tc.gc.ca/eng/programs-632.html

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GOC. 1985b. Fisheries Act. RSC 1985, c. F-14. Current to March 16, 2014. Minister of Justice.

RSBC (Revised Statutes of British Columbia). 1996a. Heritage Conservation Act. Chapter 187. Current as of November 11, 2015. Available at: http://www.bclaws.ca/Recon/document/ID/ freeside/00_96187_01

RSBC. 1996b. Water Act. Chapter 483. Current as of November 11, 2015. Available at: http://www.bclaws.ca/civix/document/id/complete/statreg/96483_01

RSBC. 1996c. Forest Act. Chapter 157. Current as of November 11, 2015. Available at: http://www.bclaws.ca/civix/document/LOC/complete/statreg/--%20F%20-- /Forest%20Act%20[RSBC%201996]%20c.%20157/00_Act/96157_01.xml

RSBC. 1996d. Land Act. Chapter 245. Current as of November 11, 2015. Available at: http://www.bclaws.ca/civix/document/id/complete/statreg/96245_01

SBC. 2008. Oil and Gas Activities Act. Chapter 36. Current as of November 11, 2015. Available at: http://www.bclaws.ca/Recon/document/ID/freeside/00_08036_01SBC (Statutes of British Columbia).

SBC. 2004. Wildfire Act. Chapter 31. Current as of November 11, 2015. Available at: http://www.bclaws.ca/civix/document/id/complete/statreg/04031_01

SBC. 2003. Environmental Management Act. Chapter 53. Current as of November 11, 2015. Available at: http://canlii.ca/t/520xn

SBC. 2002. Forest and Range Practices Act. Chapter 169. Current as of November 11, 2015. Available at: http://www.bclaws.ca/Recon/document/ID/freeside/00_02069_0

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APPENDIX 1A

EMERGENCY CONTACTS

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Emergency Contacts

Contact Contact information

RCMP – Grand Prairie (780) 830-5701 or 911

RCMP - Edson (780) 723-8822 or 911

RCMP – Rocky Mountain House (403) 845-2281 or 911

RCMP - Didsbury (403) 335-3381 or 911

RCMP - Beiseker (403) 947-3420 or 911

Ambulance – Grand Prairie and Edson 911

Ambulance – Rocky Mountain House (403) 845-2642 or 911

Ambulance – Olds – Guardian Emergency (403) 556-1160 or 911

Ambulance – Irricana – Emergency Medical 911 Response provided by Rocky View Fire Service

Hospital – Grande Prairie (780) 538-7100 or 911

Hospital – Sundre (403) 638-3033 or 911

Hospital – Olds Hospital (403) 556-3381 or 911

Hospital – Calgary – Peter Lougheed Centre (403) 943-4555 or 911

Healthcare Centre - Edson (780) 723-3331 or 911

Healthcare Centre – Rock Mountain House (403) 845-3347

Healthcare Centre – Didsbury District Health (403) 335-9393 or 911 Services

Healthcare – Beiseker Medical Clinic (403) 947-3440

Fire – Grand Prairie (780) 538-0393 or 911

Fire - Edson (780) 723-3178 or 911 Fire – Rocky Mountain House – Volunteer Fire (403) 845-2123 or 911 Station 60

Fire – Clearwater Regional Fire Rescue Services (403) 845-4444 or 911 Fire – Didsbury (403) 335-3222 or 911

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Contact Contact information Fire – Irricana – Station 108 operated by Rocky View 911 County Fire Service

Alberta Energy and Environmental 24-Hr Response 1-800-222-6514 Line

Alberta Forest Fire Reporting 310-3473

Environment and Climate Change Canada Paul Gregoire (780) 951-8695 Wildlife Biologist/Acting Manager of Environmental Assessment (CWS) Andrea McLandress (204) 983-1813 Regional Director

DFO Fisheries Protection - 1-855-852-8320 Alberta/Saskatchewan/Manitoba/Ontario/Nunavut/ [email protected] NWT

Provincial Wildlife Management (AEP) Peace: Moyles, Dave (780) 62406465 Senior Wildlife Biologist Regional Resource Management Upper Athabasca: Hobson, Dave (780) 723-8518 Senior Wildlife Biologist Regional Resource Management Red Deer/North Saskatchewan: Hubbs, Anne (403) 845-8235 Senior Wildlife Biologist Regional Resource Management South Saskatchewan: Boukall, Brett (403) 851-2147 Senior Wildlife Biologist Resource Management Program

Brewster Kenton Neufeld (403) 845-8235 Senior Fisheries Biologist

Julia Wachowski (403) 845-8308 Lands Officer/Interim Wildlife Biologist

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Contact Contact information Colt/Dismal/Robb (780) 723-8208 Mike Blackburn Senior Fisheries Biologist

Kevin Downing (780) 723-8518 Wildlife Biologist

Karr/Deep Valley/Elmworth/Valhalla Adrian Meinke Senior Fisheries Biologist (780) 538-8208

Mike Russell Senior Wildlife Biologist (780) 833-4370

Colt/Dismal Ryan Cox (780) 723-8520 Fisheries Biologist

Deep Valley (Caribou) Megan Watters Senior Species at Risk Biologist (780) 538-5263

George Duffy Caribou Range Planning Lead (780) 422-0567

Provincial Resource Management (AEP)

Peace: Hervieux, Dave (780) 538-561 Regional Resource Manager

Regional Resource Management

Upper Athabasca: Bradbury, Steve (780) 723-8329 Resource Manager

Regional Resource Management

Red Deer/North Saskatchewan: Avis, Lisa (780) 643-1874 Regional Resource Manager Regional Resource Management

South Saskatchewan: Simieritsch, Rob (403) 297-8713 Regional Resource Manager Resource Management Program

Deep Valley Cynthia Chand Integrated Resource Planner – Caribou Range (780) 644-3374 Planning

Jennifer Renton Integrated Resource Planner (North) (780) 664-5041

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Contact Contact information

Provincial Water Management (AEP)

Athabasca – deferred to Peace (2018) Guy Hancock (780) 960-8638 Water Administration Officer

Athabasca/Peace/All Sections North of Brewster

Barry Cox Water Technologist (780) 538-8050 Brewster Angela Fulton (780) 644-5041 Water Approvals Team Leader

Provincial Land Use Management (AEP)

Peace – Grande Prairie Office: (780) 738-8097 Dion Lawrence

Approvals Manager

Upper Athabasca – Edson Office: Dave Hugelschaffer (780) 723-8531 Approvals Manager

Red Deer/North Saskatchewan – Rocky Mountain House Office: Don Livingston (780) 675-8232 Acting Approvals Manager

South Saskatchewan – Calgary Office: Henri Soulodre (403) 845-8236 Approvals Manager, Lands Karr/Deep Valley/Elmworth/Valhalla Brent Bochon (780) 538-8071 Lands Team Lead Brewster Lisa Schrader Senior Lands Officer (403) 638-3805

Dismal/Robb Darren Bath (780) 865-6959 Senior Lands Officer Colt/LO coordination for approvals Larry Matwie (780) 865-6966 Senior Lands Officer Karr/Deep Valley Chris Yaremchuk (780) 538-8053 Lands Officer

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Contact Contact information

Elmworth 3/Valhalla (780) 538-8976 Stacey Boeyenga Land Management Specialist

Canada Energy Regulator (Calgary) 1-800-899-1265

Transport Safety Board Emergency / Incident Line 1-819-997-7887 (Calgary)

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APPENDIX 1B

CONTACTS

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Contacts

Brian West TC Energy Project Manager Project Manager TC Energy Corporation 450 - 1st Street SW Calgary, Alberta T2P 5H1 Phone: (403) 920-6981 Fax: (403) 920-2322 Email: [email protected]

Steve Morck TC Energy Environmental Advisor Senior Environmental Advisor TC Energy Corporation 450 - 1st Street SW Calgary, Alberta T2P 5H1 Phone: (403) 920-7464 Fax: (403) 920-2322 Email: steve_morck@ tcenergy.com

Craig Fazakas, B.Sc., P.Biol., R.P. Bio. Environmental Consultant Project Manager Wood 1925 – 18th Avenue NE Calgary, Alberta T2E 7T8 Phone: (403) 387-1715 Fax: (403) 248-2188 Email: [email protected]

Murray Lobb Heritage Resource Specialist Senior Archaeologist Wood 1925 – 18th Avenue NE Calgary, Alberta T2E 7T8 Phone: (403) 387-1925 Fax: (403) 248-2188 Email: [email protected]

Secretary of the Commission Canada Energy Regulator Contact Canada Energy Regulator Suite 210, 517 – 10th Avenue SW Calgary, Alberta T2P 0A8 Phone: (403) 292-4800 Email: [email protected]

Environment and Climate Change Canada – Alberta Office General Environment and Climate Change 4999 – 98th Avenue, Room 200 Canada Contact Edmonton, Alberta T6B 2X3 Phone: (780) 951-8695 Fax: (780) 495-2615 Email: [email protected]

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Fisheries and Oceans Canada – Edmonton Office DFO Representative: Notify in event that 1028 Parsons Road SW Contingency Water Crossing Measures or Edmonton, Alberta T6X 2X3 Emergency works are to be implemented Phone: (780) 495-4220 Fax: (780) 495-8606 Email: [email protected]

See Provincial Wildlife contacts in Table 1A In the event of Wildlife concerns

See Provincial Land Use Management contacts in In the event of Weed or Disease Concerns Table 1A

Darryl Bereziuk In Case of Discovery of Archaeological, Director, Archaeological Survey Palaeontological or Historical Site Alberta Culture, Multiculturalism and Status of Women (Archaeological Survey Historic Resources Management Branch) Old St. Stephen's College, 8820 – 112th Street Edmonton, Alberta T6G 2B8 Phone: (780) 431-2316 Email: [email protected]

Alberta Environmental Hotline In the Event of a Release Phone: 1-800-222-6514

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APPENDIX 1C

ALBERTA STANDARD PERMIT LIST

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ALBERTA STANDARD PERMIT LIST

FEDERAL Approval / Permit Issuing Agency Certificate of Public Convenience and Necessity / Leave to Construct / Leave to Open CER Section 58 Order Water Crossings Navigation Protection Act approval (vehicle crossings of all navigable watercourses or TC CER pipeline crossings of large watercourses only) Authorization under Section 35 under the Fisheries Act DFO (CER) Species at Risk Act (SARA) Permit DFO

ALBERTA Permit/License Issuing Agency Surface Rights DLO (for access roads) - AEP AEP (CER) (Provincial) DML (Department Miscellaneous Lease) - AEP DPL (Department Pipeline Agreement) – AEP TFA (Temporary Field Authorization) – AER/AEP Master Land Withdrawal and Consent Agreement – FMA Holder FMA Holder Water Crossings AEP Notification under the Water (Ministerial) Regulation and the Code of Practice for Pipelines and Telecommunication Lines Crossing a Water Body Notification under the Code of Practice for Watercourse Crossings Approval under the Water Act and Water (Ministerial) Regulation Temporary diversion licence under the Water (Ministerial) Regulation and the Code of Practice for Diversion of Water for Hydrostatic Testing of Pipelines Notification or registration for release of hydrostatic test water under the Water (Ministerial) Regulation and the Code of Practice for the Release of Hydrostatic Test Water from Hydrostatic Testing of Petroleum Liquid and Gas Pipelines Fish Collection Permit (for salvage of fish) Damage Control Licence (for beaver and beaver dam removal) Historical Resources Act Clearance ACMSW Burning Permit LFD/CTY/MD ______

ACTMSW = Alberta Culture, Multiculturalism and Status of Women AEP = Alberta Environment and Parks AER = Alberta Energy Regulator AT = Alberta Transportation CER = Canada Energy Regulator CTY = Counties of Grande Prairie, Yellowhead, Mountain View, Rocky View and Clearwater DFO = Fisheries and Oceans Canada F&W = Fish and Wildlife, Alberta Environment and Parks FMA Holder = Weyerhaeuser Company Ltd, Canadian Forest Products Ltd, ANC Timber Ltd, West Fraser Mills Ltd, Sundance Forest Industries Ltd, and Sundre Forest Products Inc LFD = Public Lands and Forests Division, Alberta Environment and Parks MD = Municipal District of Greenview

TC = Transport Canada

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APPENDIX 1D

TYPICAL DRAWINGS

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Drawing Number Revision Title

STDS-03-LA-SK-001 00 Typical Horizontal Directional Drill STDS-03-ML-03-101 01 Typical Ditch, Creek and Minor River Crossing STDS-03-ML-03-102 01 Pipeline River Crossings Typical Pipe Burial Details Within Active Stream Channels STDS-03-ML-03-214 02 Drain Tile Restoration STDS-03-ML-05-001 01 Typical Erosion and Sediment Control Measures STDS-03-ML-05-002 00 Wetland Mitigation Open Water Crossing (Sheet 1 of 2) STDS-03-ML-05-003 00 Wetland Mitigation Open Water Crossing (Sheet 2 of 2) STDS-03-ML-05-004 00 Wetland Mitigation Typical Crossing (Sheet 1 of 2) STDS-03-ML-05-005 00 Wetland Mitigation Typical Crossing (Sheet 2 of 2) STDS-03-ML-05-006 00 Peatland Materials Conservation Trench Spoil 2 Lift (Sheet 1 of 2) STDS-03-ML-05-007 00 Peatland Materials Conservation Trench Spoil 2 Lift (Sheet 2 of 2) STDS-03-ML-05-101 01 Temporary Clear Span Bridge Crossings STDS-03-ML-05-103 01 Pipeline Vehicle Crossing – Culvert with Native Fill Material STDS-03-ML-05-104 01 Temporary Snowfill/Ice Bridge Crossing STDS-03-ML-05-105 00 Typical Open Cut Watercourse Crossings STDS-03-ML-05-111 01 Flume Watercourse Crossings STDS-03-ML-05-112 01 Dam and Pump Watercourse Crossings STDS-03-ML-05-113 01 Dragline Typical Watercourse Crossings STDS-03-ML-05-131 01 Soil Retaining Berm STDS-03-ML-05-132 01 Sediment Control - Silt Fence Construction STDS-03-ML-05-137 01 Sediment Control Check Dam/Filter STDS-03-ML-05-301 01 Timber Salvage Quality and Defects STDS-03-ML-05-302 01 Salvage of Merchantable Timber STDS-03-ML-05-312 02 Typical Rollback for Access Control STDS-03-ML-05-313 01 Typical Rollback for Erosion Control STDS-03-ML-05-314 00 Mounding and Habitat Restoration (Sheet 1 of 2) STDS-03-ML-05-315 00 Mounding and Habitat Restoration (Sheet 2 of 2) STDS-03-ML-05-316 00 Habitat Restoration Seedling Planting for Line of Sight (Sheet 1 of 3) STDS-03-ML-05-317 00 Habitat Restoration Seedling Planting (Sheet 2 of 3) STDS-03-ML-05-318 00 Habitat Restoration and Line of Sight Seedling Planting Notes (Sheet 3 of 3) STDS-03-ML-05-401 01 Topsoil Conservation Full-Width Stripping STDS-03-ML-05-402 02 Topsoil Conservation Ditchline and Spoil Side STDS-03-ML-05-404 01 Topsoil Conservation Blade Width STDS-03-ML-05-410 00 Topsoil Conservation Ditch and Workside Stripping STDS-03-ML-05-411 01 Topsoil Conservation Ditchline (Winter Construction) STDS-03-ML-05-412 01 Topsoil Conservation Foreign Pipeline Crossings (Winter Construction) STDS-03-ML-05-421 01 Topsoil Conservation for Side Hill Grading in Agriculture Land STDS-03-ML-05-424 01 Soil Handling for Ramped Line Crossing STDS-03-ML-05-426 00 Topsoil Conservation Full-Width Stripping 3 Lift STDS-03-ML-05-431 01 Secondary Stripping for Spoil Displacement STDS-03-ML-05-443 01 Grubbing and Topsoil Conservation for Treed Land STDS-03-ML-05-445 00 Frozen Forested Lands Right-of-Way Preparation (Minimal Surface Disturbance) STDS-03-ML-05-446 00 Non-Frozen Forested Lands Surface Materials/Stripping Conservation STDS-03-ML-05-601 01 Streambank Reclamation - Rootwad STDS-03-ML-05-602 01 Streambank Reclamation - Deflectors STDS-03-ML-05-603 01 Streambank Reclamation - Log Wall STDS-03-ML-05-604 01 Streambank Reclamation - Brush Layer in Cross Cut Slope STDS-03-ML-05-606 01 Streambank Reclamation - Vegetated Geotextile Installation STDS-03-ML-05-607 01 Streambank Reclamation – Tree Revetment

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STDS-03-ML-05-608 01 Water Crossing Bank Erosion Protection STDS-03-ML-12-202 01 Typical Bentonite Ditch Plug STDS-03-ML-12-203 01 Typical Bentonite Ditch Plug Using Nudrain or Equivalent STDS-03-ML-12-204 01 Typical Polyurethane Foam Breaker STDS-03-ML-12-211 01 Typical Subdrain Using Gravel STDS-03-ML-12-212 01 Typical Subdrain STDS-03-ML-12-221 01 Typical Diversion Berms STDS-03-ML-12-222 01 Typical Diversion Berms with Flow Channel STDS-03-ML-12-223 01 Typical Stub Berm

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TBE00059-GAL-EN-RP-0022

PLAN SHOWING: NOVA GAS TRANSMISSION LTD. 2021 NGTL EXPANSION PROJECT TEMPORARY ICE BRIDGE (WITH SNOWFILL CAP)

No. DATE REVISION / ISSUED STATUS JOB No. NOT TO SCALE 0 DEC. 18, 2019 PLAN ISSUED IFU PA-0027-18 1 DEC. 19, 2019 REVISED NOTES IFU PA-0027-18 2 JAN. 22, 2020 REVISED SKETCH IFU PA-0027-18 3 3 MAR. 2, 2020 REVISED NOTES IFU PA-0027-18 REVISION Document No.: 000796-2019-MP-08-0135_03

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

APPENDIX 1E

CONTINGENCY PLANS

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

TABLE OF CONTENTS

1.0 RELEASE CONTINGENCY PLAN ...... 1 2.0 ADVERSE WEATHER CONTINGENCY PLAN ...... 5 3.0 FLOOD AND EXCESSIVE FLOW CONTINGENCY PLAN ...... 6 4.0 WET SOILS CONTINGENCY PLAN ...... 7 5.0 FIRE SUPPRESSION CONTINGENCY PLAN ...... 8 6.0 SOIL HANDLING CONTINGENCY PLAN ...... 10 7.0 PERMAFROST CONTINGENCY PLAN ...... 11 8.0 SOIL EROSION CONTINGENCY PLAN ...... 12 9.0 CONTAMINATED SOILS CONTINGENCY PLAN ...... 14 10.0 DRILLING MUD RELEASE CONTINGENCY PLAN ...... 16 11.0 PLANT SPECIES AND ECOLOGICAL COMMUNITIES OF CONCERN DISCOVERY CONTINGENCY PLAN ...... 19 12.0 WILDLIFE SPECIES OF CONCERN DISCOVERY CONTINGENCY PLAN ...... 20 13.0 CULTURAL RESOURCE DISCOVERY CONTINGENCY PLAN ...... 21

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1.0 RELEASE CONTINGENCY PLAN Introduction During construction, an accidental release incident (i.e. spill) has the potential to occur. The majority of releases on a construction project are categorized as small or low impact releases (spot spill). Depending upon the location, substance and quantity of the release, the release incident may be reportable to applicable federal and/or provincial authorities. The following contingency plan identifies the appropriate measures required to be employed.

If an accidental release does occur, measures to control, contain, recover and clean up the release are to be implemented in a timely manner to minimize the potential for adverse environmental and human health effects. The effective containment of a release onto land or into a waterbody or watercourse depends on a variety of factors including: the composition of the release material, duration and extent of the release in addition to ground cover, topography, hydrogeology, solubility of the material, viscosity of the liquid, water currents, soil permeability, climatic, seasonal and local weather conditions of the release site.

If a Contractor specific Release Response Plan (or equivalent) is required, the plan will be reviewed by a Company Representative to ensure that the Contractor Release Response Plan is in alignment and meets the requirements of the Company’s Release Contingency Plan.

General Environmental Protection Measures The following general environmental protection measures are to be adhered to during all phases of construction:

1. Appropriate release containment (spill kits) and recovery equipment and materials will be maintained at all work sites, in accordance with the Chemical and Waste Management Plan (Appendix 1F). 2. Specific instructions regarding applicable notifications and appropriate response actions to be taken in the event of a release will be included in project orientations. 3. The first person on the scene will take immediate action to control the scene as identified in the Company reviewed Contractor Release Response Plan (or equivalent) or the Company’s Release Contingency Plan. 4. Ensure the release is reported to the Environmental Inspector(s) or designate(s). 5. The Release Report Form (below) or other equivalent form shall be used to document the details of the release. Do not wait for all the details to fill-in and provide the form to the Company. 6. When notified of a release of any type, a Company Representative will: • determine if the release is reportable as per applicable provincial and/or federal regulations; • refer to the Emergency Contacts list for the appropriate reporting information (Appendix 1A); • notify the appropriate responsible provincial regulatory agency if the release incident is reportable as soon as practical and within 24 hours of detection. o In the event of a significant, or potentially significant, adverse effect on the environment, or other immediately reportable event as defined under the Canada Energy Regulator (CER) Event Reporting Guidelines, the Company’s Regulatory Compliance team will determine federal reportability and notify the CER within three hours of the incident being discovered. . Such incidents include, but are not limited to: “frac outs” released into a watercourse during an HDD; the release of a toxic substance into a sensitive environment (e.g., watercourse, wetland) or into a designated national/ provincial areas (e.g., national park, provincial park, wildlife refuge), or in an area where there is a pathway to a receptor nearby (e.g., where groundwater or surface water is used for drinking, irrigation, or is consumed by livestock); or, the destruction of critical habitat for Species At Risk Act-listed species.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

7. The Environmental Advisor or designate will document the incident in the TC Energy EHSM Incident Management system within 24 hours of the incident; 8. Where applicable, prepare a detailed reclamation plan and follow-up reports that may be required by regulations or information request. Hazardous Materials Emergency Response Measures The following actions will be taken upon initial detection of a hazardous materials release:

1. The first person on the scene will take immediate action to control the scene as identified in the Contractor Release Response Plan and will notify both the Contractor and a Company Representative of the nature of the release incident; 2. When notified of a hazardous materials release, the Contractor will immediately ensure that: • action is taken to control potential danger to human life including the appointment of an Onsite Safety Supervisor; • the necessary equipment is mobilized and measures are implemented immediately to control and contain the release; and • all resources are made available to contain and safely recover the release. Containment, Recovery and Cleanup At a minimum, the following general measures are to be followed to contain, recover and clean up low impact spot releases onto the Project footprint from construction equipment or similar sources:

1. Assess the safety hazards of the situation; 2. Pump out any material remaining within the source of the release, if applicable; 3. Remove sources of ignition, if safe to do so; 4. Identify the product, stop source, and physically contain release as soon as is safe to do so; 5. Take immediate steps to contain and clean up the release to minimize potential for the release to spread or increase in size; 6. Delineate and clearly flag the entire release and containment area and avoid equipment traffic and ground disturbance activities in the area until clean-up is complete; 7. Avoid use of water or fire extinguishing chemicals on non-petroleum product spills unless it is necessary to control a fire or prevent an explosion, since many chemicals react violently with water and chemical extinguishing agents may release toxic fumes. In addition, chemicals may be soluble in water and dispersal makes containment and clean-up more difficult; 8. Use natural depressions or berms constructed with available materials in proximity to the site to physically contain a release onto land; 9. Determine clean-up options and appropriate methods to recover and dispose of potentially contaminated soil or vegetation at an approved facility; 10. Recover the released materials from the defined containment area using equipment suitable to the nature and extent of the release; 11. Cleanup the release and containment areas. Consultation with a qualified remediation specialist and/or Company Representative may be required; and 12. Dispose of containment materials, and contaminated soil and vegetation at an approved facility.

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Releases Adjacent to or into a Watercourse or Waterbody At a minimum, the following general measures are to be implemented to recover and remediate an accidental release adjacent to, or into, a watercourse or waterbody.

1. Recover the released materials from the containment area using equipment suitable to the nature and extent of the release; 2. Deploy booms, skimmers, sorbent pads or a functionally equivalent containment structure to contain releases in or near a watercourse or waterbody; 3. Recover spilled product; 4. Cleanup the release and containment areas. Consult with a qualified remediation specialist and/or Company Representative, where required; and 5. Dispose of containment materials, and contaminated soil, vegetation and water at an approved facility.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

RELEASE REPORT FORM

Type of Material Released: Gasoline Diesel Lube Oil Hydraulic Fluid Vehicle Antifreeze Other (specify)

Date and Time of Release or Discovery: Source of Release: Area of Release (m2): Depth of Release (cm): Volume of Release (L): Estimated Release Rate: Duration of Release: Location (land, water, land and water): Soil Type (e.g., sandy, clay, etc.): Location: Easting ______; Northing ______UTM Zone ____; KP _____

Land Use:

Environmentally sensitive areas potentially affected:

Weather conditions at time of discovery:

Procedures taken to minimize, control or stop the release:

Remediation plan and schedule of implementation, if required:

Current status of the remediation program:

(dd/mm/yy) (hr:min):

Form Completed by: Name: ______(printed) ______(signed)

Date: ______

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2.0 ADVERSE WEATHER CONTINGENCY PLAN The Environmental Inspector(s) or designate(s) are responsible for monitoring and implementing all procedures and will liaise with the responsible regulatory agencies, when required. If necessary, a meeting will be held in the field to ensure that all involved parties mutually understand concerns.

Where adverse weather conditions and activities have the potential to cause adverse environmental effects, the Environmental Inspector(s) or designate(s) will suspend that phase of the operation until weather conditions abate or effective mitigation procedures have been implemented. The following represents mitigation measures that may be applied. Specific environmental mitigation is subjective and dependent upon construction footprint conditions and the Project schedule.

The following table outlines mitigation measures that allow for the continuation of activities and reduce potential adverse environmental effects.

WIND EROSION Mitigation Options to Consider 1 Uniformly apply mulch or tackifier to topsoil/strippings piles and/or other areas affected by wind erosion. 2 Water identified areas when activities or sufficient winds have created the potential for topsoil/strippings erosion. 3 Apply straw to topsoil/strippings and/or other areas where winds have created the potential for soil erosion. Straw sources are subject to landowner or regulatory approval, and must be approved by the Environmental Inspector(s) or designate(s). When clean straw is unavailable, seeding a clean, unpalatable annual crop at half the normal rate is acceptable. WATER EROSION Temporary Berms / Silt Fence 1 Temporary berms, silt fence and/or other appropriate mitigation measures (e.g., wattles, erosion control matting) will be implemented along the trench crown, surface material piles, and/or other areas where the potential for water erosion has been identified. 2 To prevent ponding and/or erosion, cross right-of-way drainage will be maintained. Appropriate measures (e.g., sumps, pumping excess water) to prevent deleterious material from entering a watercourse or waterbody will be implemented, when and where required. Construction Footprint Maintenance / Stabilization 1 During adverse weather conditions, the Company will direct the Contractor to reduce unnecessary traffic and the number of vehicles on the construction footprint. Better planning of activities will be required by the Contractor to either tighten up, or spread out the work crews as warranted (e.g., close proximity of ditching, lower in, and backfill operations). To reduce effects, a one trip in, one trip out philosophy will be implemented for all construction footprint access. 2 Traffic will be restricted to the construction footprint. The responsible regulatory agency will need to approve any activities outside of the construction footprint. 3 The traffic pattern on the construction footprint will be changed to avoid repeated driving in the same areas. 4 Under adverse weather conditions, the Contractor will be required to back-blade the construction footprint during and at the end of the day. Back-blading of the construction footprint fills in tire tracks, thereby assisting in the prevention of water erosion and re-establishing a firm working surface. 5 Under adverse weather conditions, topsoil/surface material and/or subsoil may be stripped and placed at the edge of the construction footprint if approved by the Environmental Inspector(s) or designate(s). Topsoil, surface material and/or subsoil will be redistributed evenly across the construction footprint during clean- up. 6 Under spring thaw condition and/or where identified by the Company, and in consultation with the responsible regulatory agency, vehicle watercourse crossing techniques may be modified and/or replaced with other appropriate crossing techniques. 7 When available and practical, tracked equipment may be required for specific activities. 8 Work in highly sensitive areas may be stopped and shifted to less sensitive areas. 9 If all mitigation fails, Project activities may be suspended until adverse weather conditions abate, thereby incurring a schedule delay. Project shut-down will be based upon discussions between the Construction Manager, Contractor, Environmental Advisor and the Project Management Team. Recommencement of work must be authorized by the Construction Manager, in consultation with the Environmental Inspector(s) or designate(s) prior to restart.

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3.0 FLOOD AND EXCESSIVE FLOW CONTINGENCY PLAN The weather conditions will be monitored by the Environmental Inspector(s) or designate(s) on a daily basis. If a major storm is predicted or occurs, qualified personnel will inspect all watercourse crossings where construction is in progress or has been completed, to determine whether any corrective actions need to be implemented.

At watercourses where an isolated crossing method is recommended, the proposed isolation crossing techniques may not be feasible during periods of excessive flow or unusually wet seasons.

The following contingency measures will be implemented progressively or individually, as warranted, if excessive flow or flood conditions are anticipated prior to commencing watercourse crossing construction.

1. Assess the capability to handle the expected flow rate with the proposed crossing method. If use of the proposed crossing method is determined to be feasible by the Company, the crossing will proceed. 2. Defer water crossing construction to a later time when flows have subsided, if it is determined by the Company that the proposed crossing method is not feasible. 3. Alternatively, where the expected flow rates and window limitations combine to preclude the proposed crossing method, request approval from the responsible regulatory agencies to use an alternate crossing method. The following contingency measures will be implemented progressively or individually, as warranted, if excessive flow or flood conditions should occur during watercourse crossing construction. 1. Assess the capability to handle the anticipated flow rate with the proposed crossing method. If use of the proposed crossing method is determined to be feasible by the Company, the crossing will proceed. 2. Increase the quantity of materials required to perform the crossing. Reinforce or replace the isolation and/or bypass structure(s) if necessary. 3. Withdraw all equipment or tanks containing fuel, oil or other hazardous materials from potential flood areas. 4. Remove all stationary and mobile equipment deployed at the crossing site to a safe area above the anticipated high water level. 5. Remove any instream flume or dam equipment that may impede streamflow, as safe work conditions allow. 6. Relocate all topsoil/strippings piles at the direction of the Environmental Inspector(s) or designate(s). 7. Relocate spoil piles, to the extent feasible, to a position above the anticipated high water level. 8. Evaluate vehicle crossing structure to determine whether adequate free-board is present on bridges and adequate capacity is available in culverts. Take corrective measures as appropriate to avoid flooding of adjacent lands. 9. Import sandbags and place strategically to help stabilize and add height to banks to prevent flooding of nearby areas, especially where vegetation has been removed.

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4.0 WET SOILS CONTINGENCY PLAN The Company will assign Environmental Inspector(s) or designate(s) with sufficient training and soils- related experience to be able to identify soils that are too wet for a particular activity and when the soils are sufficiently dry or frozen to allow the activity to resume. The decision to continue or suspend particular construction activities on lands with excessively wet soils will be made by the Construction Manager in consultation with the Environmental Inspector(s) or designate(s).

Soils are considered to be excessively wet when the planned activity could cause unacceptable damage to soils either due to rutting by traffic through the surface layer into the subsoil; soil structure damage during soil handling; or compaction and associated pulverization of surface material due to heavy traffic.

In order to minimize terrain disturbance and soil structure damage through rutting or compaction due to wet soil conditions, construction alternatives will be employed, as necessary, in the event of excessively wet soils. The contingency measures listed below will be implemented individually or in combination, as necessary, based on site-specific conditions.

Wet Soil Contingency Measures 1. Restrict construction traffic, where feasible, to equipment with low-ground-pressure tires or wide pad tracks. 2. Postpone construction until evening or early morning when the ground is frozen. 3. Install geotextile, swamp mats, rig mats, access mats, or corduroy or equivalent, if approved by the Company, in problem areas. 4. Under frozen conditions, employ frost inducement measures such as snow packing or plowing to increase the load-bearing capacity of thawed ground. 5. Suspend timber skidding operations or implement other measures (e.g., use tarps or plastic sheeting) if the potential exists for salvageable timber to be damaged through contact with wet soils. 6. Suspend construction until soils dry out or freeze.

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5.0 FIRE SUPPRESSION CONTINGENCY PLAN Necessary fire-fighting equipment will be on site in accordance with the requirements of the responsible regulatory authority. In addition, all motorized equipment must carry a fully charged fire extinguisher. The Fire Boss will ensure that fire extinguishers are present and fully charged and all fireline equipment is present and in working order. The fire equipment and water supply on site should be increased as the fire hazard increases.

In the Event of a Fire The following mitigation measures will be implemented in the event of a fire.

1. Commence fire suppression measures immediately upon detection of fire provided that fire conditions allow personnel to safely proceed under the direction of the Fire Boss. 2. Personnel working on the Project must report the location of fire as well as size of fire and wind direction, to Fire Boss immediately. 3. Fire Boss or the Company designate, will report wild fires and relevant information to the Company’s Environmental Advisor, Construction Manager. The Fire Boss will supply necessary information for the Company designate to report wild fires to the responsible regulatory authority, municipal By-Law officers and applicable local fire departments. Reporting to provincial authorities must be completed immediately. Refer to the Fire Report Form for guidance when reporting fires to regulatory agencies. 4. Fire Boss will deploy fire-fighting equipment and crew to clear fire breaks or extinguish the fire directly if possible. All equipment and personnel shall be made available to control the fire. Effort of fire control will be limited, if warranted, due to safety issues and will take into consideration fire conditions, safety, fitness of personnel and equipment availability. 5. Fire Boss will inspect the fire site as soon as possible and take charge of directing suppression measures until relieved of this duty by the applicable provincial authority or until conditions become unsafe. 6. Fire Boss will deploy additional crew and machinery as needed and the Company will request assistance of the responsible regulatory authority, local fire department and applicable municipal government if Contractor resources are inadequate (see contact list and phone numbers below). Fire suppression measures shall continue until the fire is extinguished or until otherwise notified by the responsible regulatory agency. 7. Moveable material, particularly explosive or flammable materials, vehicles, etc. will be promptly moved to a safe location whenever there is a possibility of being endangered by fire. 8. Fire Boss will ensure that all burning embers are extinguished and will monitor burn area for smouldering material. Employ infrared scanning equipment to detect any hot spots. 9. Refer to Appendix 1A of the EPP for emergency fire reporting numbers.

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FIRE REPORT FORM

General Date and Time of Fire or Discovery: Source (if known):

Location of Fire LSD ______of section _____ Township _____ Range _____ W _____ Mer. Easting ______; Northing ______UTM Zone ____; KP _____

Other description of location:

Site Information Fire is burning in the: ground bush (timber type) agricultural land Other

Rate of spread is: not moving moderate (less than a normal walk?) fast (more than a normal walk?)

Any people at the fire? Yes _____ No _____ Don’t know _____ Is property threatened? Yes _____ No _____ Don’t know _____ Is road access available? Yes _____ No _____ Don’t know _____ Is water readily available? Yes _____ No _____ Don’t know _____ Any other observations? (e.g., lightning, recreation, vehicles)

Smoke Information When unable to see fire, only smoke visible: Colour: light grey ______Column: intermittent ______medium grey ______scattered ______dark grey ______light ______black ______heavy ______

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

6.0 SOIL HANDLING CONTINGENCY PLAN While soils handling criteria presented in this EPP address the key soils handling questions that could occur during construction, the following minor problems may arise during construction that may result in loss of soil capability if not addressed. Mitigation measures are provided to lessen the potential impacts associated with construction in agricultural land use.

Condition/Concern Mitigation Options Little or no topsoil on 1. Follow direction provided in the Soil Survey as provided on the cultivated, pasture or hay Environmental Alignment Sheets. lands Poor colour separation 2. Identify subsoil by texture and structure for any site-specific between topsoil/strippings adjustments to depth. and subsoils 3. Use topsoil/strippings depths indicated in the soil assessment and the Environmental Alignment Sheets as a guide. Stony subsoils or 4. Attempt to use conventional equipment to strip topsoil/strippings. topsoil/strippings 5. Employ backhoe, if above measures are ineffective. 6. Pick rocks after backfilling and after grade restoration. 7. Pick rocks after replacement of topsoil/strippings. Shallow bedrock 8. Ripping is preferred over blasting where rock trenching is encountered. 9. Bedrock is not to be backfilled into the upper 0.5 m of the trench on agricultural lands. 10. Excess bedrock will be disposed of at locations approved by the Company and responsible regulatory agency, where applicable. 11. Import additional or replacement backfill if warranted from locations approved by the Company, and responsible regulatory agency, where applicable. Alternate soil handling 12. Discuss benefits of proposed soil handling with landowner. measure or no 13. If the landowner maintains the request following discussions, conduct topsoil/upper surface topsoil/strippings handling operations in compliance with the material stripping landowner’s request. requested by landowner Uneven interface between 14. Utilize equipment capable of fine depth adjustments when salvaging topsoil/strippings and topsoil/strippings. subsoil Soil pulverization 15. Minimize traffic on the construction footprint. 16. Where pulverization of soils has the potential of causing soil loss or long-term structural impact, salvage topsoil/strippings, regrade and/or stabilize the construction footprint using a tackifier or water, as directed by the Environmental Inspector(s) or designate(s). High winds 17. Suspend topsoil/strippings handling during high wind conditions. Frozen Ground Conditions 18. If frozen ground conditions become permanent and standard non- frozen construction procedures can no longer be achieved without affecting soil quality and land capability, then frozen ground stripping procedures will be fully employed.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

7.0 PERMAFROST CONTINGENCY PLAN Permafrost tends to be confined to poorly-drained organic bogs where the thick layers of peat provide insulating properties to protect the permafrost from thawing.

In the unlikely event that isolated pockets of permafrost are identified throughout the Project during construction, the following mitigation measures will be implemented to the extent practical.

1. NGTL will inform the NEB Compliance Inspector with a report identifying and describing each permafrost location encountered at the site. The report will include the depth, extent, terrain, vegetation and mitigation measures implemented. 2. NGTL will attempt to adjust the location of permanent facilities (fenced area and access road) to avoid direct impact to areas of permafrost, if feasible. 3. Construction schedule will allow site preparation in frozen conditions only, in areas where permafrost may be encountered. 4. Snow and ice will be used to create a level surface to facilitate construction at the site. Grubbing and grading over the area of permafrost will be avoided, if feasible. 5. Any strippings or subsoil will be placed on a snow layer in the permafrost area to prevent damage to the upper surface materials over the permafrost.

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8.0 SOIL EROSION CONTINGENCY PLAN If wind or water erosion is evident during the construction phase of the Project, all necessary Contractor equipment and personnel will be made available to control the erosion. During the construction phase, the Environmental Inspector(s) or designate(s) in consultation with the Company’s Environmental Advisor will determine appropriate procedures to be implemented to control soil erosion and other soil handling problems encountered.

This table provides a list of control options to be implemented as appropriate. Similar procedures should be followed during the operational phase.

Concern Mitigation Options Water Erosion 1. Implement one or a combination of the following mitigation techniques: • install silt fences near the base of slopes; • regrade furrows and gullies; • construct cross ditches and berms decreasing the spacing on steeper slopes or on more erodible soils; • construct temporary berms of subsoil, sandbags, wattles, bio-degradable geotextiles or geo-ridge during construction activities; • armour the upslope face of berms with geotextile, rock, logs or sandbags; • import small diameter slash then roll back and walk down; • reseed an annual cover crop as soon as feasible after construction; • transplant native shrubs, plant willow stakes or use other bioengineering techniques; • install slope indicators at locations where the risk of slope failure, or creep exists; consult a geotechnical engineer; and/or • shut down construction until the risk of erosion has been reduced or the conditions improve. Wind Erosion 2. Shut-down or relocate construction activities until winds dissipate and conditions improve. 3. Consider using the following techniques if wind erosion of the topsoil/strippings windrow is of concern: • apply water to the topsoil/strippings windrow; • windrow snow (if available) over the topsoil/strippings windrow; • tackify (at rate recommended by the distributor) the topsoil/strippings windrow; and/or • pack the topsoil/strippings windrow with a sheepsfoot packer or other suitable equipment. 4. Consider using the following techniques if wind erosion is of concern after topsoil/strippings replacement: • seed cereal or sterile hybrid cover crop; • employ straw crimping at 2-2.5 tonnes/ha; • apply hydromulch or tackifier; • import small diameter slash for use as rollback - walk down slash; • add locally available manure and cultivate; and/or • install wind fences. 5. Implement one or a combination of the following mitigation techniques:

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Concern Mitigation Options Erosion of or • install vegetated geogrid; Failure of • install coir logs; Streambanks • install log cribwall bank protection; • install biodegradable erosion control matting; • plant willow stakes in the spring; • transplant willow clumps, install willow wattles, or brush layering; • install tree revetments; and/or • install rock gabions or line the banks with riprap (subject to Company approval and applicable regulatory requirements).

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9.0 CONTAMINATED SOILS CONTINGENCY PLAN The excavation of soils is required during Project construction. During these activities, there is a potential to encounter soil or water contamination. The purpose of this contingency plan is to set out the recommended steps for consistent, safe and environmentally responsible handling of contaminated soil (and accompanying water).

Goals The contingency plan outlined below has been developed and will be employed to:

• minimize adverse effects to an acceptable level as per applicable provincial and/or federal guidelines. • ensure appropriate federal and provincial reporting (see Release Contingency Plan). • maintain a safe working environment on the construction footprint. • employ environmentally and economically responsible construction practices at all times and in accordance with applicable industry standards. The Company, its contractor, and sub-contractor are responsible for implementing and maintaining all mitigation measures unless otherwise specified.

Known Contaminated Sites Contaminated soils will be excavated and stored on the construction footprint in approved locations for disposal.

1. Contaminated soils will be manifested and disposed of in accordance with the Company waste management plan and applicable regulatory requirements. 2. If conditions pose an environmental risk to adjacent properties, the Company will direct the Contractor to install additional measures such as an impervious berm around the work area; lined sediment ponds; and additional soil and water testing to monitor the potential for offsite migration and contamination. Unknown Contaminated Sites In the event a suspected contaminated area is encountered, the procedure will be as follows:

1. The Company will suspend all work in the immediate area. 2. The Company will immediately notify the Construction Manager and Environmental Inspector(s) or designate(s) of the situation. 3. The Company will conduct a preliminary site assessment to determine whether the soil in question is contaminated. 4. The Company will assess whether the soil in question could potentially be contaminated based on: • the specific location of the suspect/contaminated soil • adjacent land uses • how it was encountered (excavated, oozing, flowing, solid, etc.) 5. Based on the site indicators, including olfactory and visual indicators, the Company might decide a third party consultant is required to conduct additional site assessment. 6. The appropriate regulatory reporting will be completed as needed.

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7. The Contractor will secure the area and any suspect excavated soil, and any unnecessary contact/disturbance of the soil will be avoided. Potential securing methods include: • placing the excavated soil on a impervious liner • covering the excavated soil with an impervious membrane to isolate it from weather events • storing the excavated soil away from any watercourses, wetlands, or crops • placing impermeable berms around the excavated material to isolate and contain the soil 8. If an excavation can be safely left open, the area will be secured until further direction can be obtained. If the excavation cannot be safely left open, it will be backfilled with its own excavated materials. 9. Work will be suspended if: • continuing to excavate in a suspect/contaminated site could pose a threat to the health and safety of the worker(s) (see applicable regulatory guidelines) • issues of non-compliance with environmental legislation might result from continuing to work in areas of contaminated soils 10. Resolution of the management of contaminated materials will include the following points: • completion of the work • ensuring compliance concerns are addressed • ensuring health and safety concerns are addressed (see applicable regulatory guidelines) • ensuring proper manifesting, removal, treatment, and disposal of any soil and/or water where the Company has responsibility (see Release Contingency Plan) 11. The Company will determine the appropriate cleanup and disposal of materials based on analytical results and applicable regulatory requirements. Contaminated soils will be excavated, stockpiled, manifested, and disposed of at an approved facility.

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10.0 DRILLING MUD RELEASE CONTINGENCY PLAN During a trenchless crossing, an accidental release of drilling mud to the terrestrial environment, adjacent to or into a watercourse or waterbody could adversely affect the environment. The following contingency plan has been developed to ensure that appropriate measures are in place to minimize the risk of adverse effects during trenchless crossings, including watercourse or waterbody, facility and/or infrastructure crossings.

Both the Contractor and the Company must be diligent during all aspects of directional drilling to ensure that the potential for an instream drilling mud release is minimized; or if it does occur, that environmental effects are minimized. Should the Contractor have an instream drilling mud release contingency plan in place, both plans will be reviewed by the Company with the Contractor to ensure that the most stringent conditions of both plans apply.

10.1 Emergency Response The loss of drilling mud into seams of coarse material, fissures, etc. routinely occurs during drilling operations. Since drilling fluid does not always flow to the surface, a loss does not necessarily indicate that the drilling mud has been released onto near shore areas or into the watercourse or waterbody. Nevertheless, a release of drilling mud into a watercourse or waterbody can adversely affect fish and fish habitat.

General Emergency Response Measures 1. Suspend drilling operations immediately if excessive loss of drilling mud or significant or unusual changes in annular pressure is noted and conduct a detailed examination of the drill path and surrounding area for evidence of a release to the surface. 2. Immediately notify both the Construction Manager and the Environmental Inspector(s) or designate(s) if a drilling mud release is observed. The Environmental Inspector(s) or designate(s) will inform the Environmental Advisor. 3. Contain the release to prevent drilling mud from migrating away from release location or entering the watercourse or waterbody from near shore areas by installing a berm of subsoil, sandbags or other material approved by the Environmental Inspector(s) or designate(s). 4. If the volume of mud released is not great enough to allow practical containment and recovery, the mud release will be allowed to dry and dissipate naturally. 5. If the drilling mud release enters a watercourse or waterbody the Environmental Inspector(s) or designate(s) will immediately notify the Construction Manager and Environmental Advisor. 6. Any drilling mud release that enters a watercourse or waterbody or that may cause or is causing an adverse effect is reportable. The Environmental Inspector(s) or designate(s) or Environmental Advisor will report the incident to the regulatory agency responsible for emergency spill response coordination as soon as possible and within 24 hours of the release. Refer to Emergency Reporting Contacts (Appendix 1A). 7. The Environmental Advisor or designate will document the incident in the TransCanada EHSM Incident Management system within 24 hours of the incident. 8. The Environmental Inspector(s) or designate(s) will prepare a report summarizing the events leading up to the release as well as the environmental protection measures taken following the release in preparation for follow-up regulatory reporting. 9. Continue to conduct water quality sampling as prescribed by the Water Quality Monitoring Plan, and as directed by the Environmental Inspector(s) or designate(s).

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Containment and Recovery (Instream) Isolate the drilling fluid release from the watercourse or waterbody to the extent practical. Site specific limitations (e.g. deep water, higher flow or inaccessible areas) may not allow for a practical isolation of the release location.

1. Consider the following options for isolating the drilling fluid release area: • Construct a dam and pump set-up on smaller watercourses or waterbodies, if practical. • Install a flume to divert water past the release area. • Install coffer dams made of sandbags or sheet metal. • Attempt to contain the release point within an area isolated with aquadams or sheet metal, etc. 2. Consider the following options for removal of mud from instream: • Use trash pumps or hydrovac truck. If trash pumps are used, ensure that the pump-off area does not drain directly into the watercourse or waterbody, or construct a holding area. • If a hydrovac truck is used, ensure that all activities comply with the regulatory waste disposal requirements. • Recover accumulated drilling fluid from the watercourse or waterbody by hand, pump, or hoe. • In consultation with the responsible regulatory agency, leave mud in place if watercourse or waterbody flow velocity or depth limits safe recovery operations or if recovery will result in unacceptable terrain or instream damage. 3. Dispose of drilling fluid in accordance with appropriate waste management requirements. Containment and Recovery (Onshore) 1. For onshore mud release, consider the following options for immediate containment. • If accessible by heavy equipment, immediately construct berms or excavate a sump for containment. Use trash pumps or hydrovac truck. • If not accessible by heavy equipment, construct weirs using logs, sand bags, silt fence, rolls of matting, shovel trenches, and/or filter cloth and a containment area where appropriate. 2. Before allowing filtered water to enter the watercourse or waterbody, ensure that the TSS or turbidity level is within applicable regulatory water quality guidelines.

Plans for Potential Continuance of Drilling Drilling will only be allowed to resume if the potential for significant adverse effects on the environment is low, as determined by project management in consultation with environment and aquatic specialists, and drilling or geotechnical consultant (if warranted).

1. Implement measures to prevent the further release of drilling mud into the watercourse or waterbody. Appropriate measures will vary depending on the lessons learned during the previous drill attempt. 2. Progressively implement the following measures to prevent the further release of drilling mud into the watercourse or waterbody. a) Ensure that appropriate structures, materials, equipment and personnel are in place and available in the event of a subsequent release of drilling mud. b) Reduce drilling mud pressures if practical. c) Plug fissures/fracture with nontoxic sealers or plugging agents pumped into the drill hole and left undisturbed for an appropriate period of time whereupon drilling will be resumed. If the sealing agents are not successful, drilling will be suspended and the plan reviewed and revised.

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d) Employ downhole cementing to either seal off the problem zone for re-drilling or seal off a large portion of the existing drill hole to a point where a new drill path (generally at a lower elevation) can be attempted. If these measures are unsuccessful, then drilling will be suspended and the plan reviewed and revised. e) Move the drill and attempt to re-drill from a new location employing the same protection measures implemented on the initial drill if conditions indicate that a second drill will be successful. Prior to commencing the re-drill, the proposed drill path will be reviewed and revised accordingly.

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11.0 PLANT SPECIES AND ECOLOGICAL COMMUNITIES OF CONCERN DISCOVERY CONTINGENCY PLAN In the event that previously unidentified rare plants or ecological communities are discovered, the plant or ecological community will be assessed and appropriate mitigation measures will be determined. The appropriate site-specific mitigation measures will be determined following an assessment by a vegetation specialist, which will consider the following:

• the location of the plant or ecological community on the construction footprint; • the relative rarity of the plant or ecological community (regionally, nationally, etc.); • the local abundance of the plant or ecological community; • the growth habit and propagation strategy of the plant or ecological community; and • the habitat preferences of the plant or ecological community. The suite of mitigations that may be implemented includes the following:

• narrow down the proposed area of disturbance and protect the site using snow fencing and signage; • inform all users of access restrictions in the vicinity of fenced sites; • temporarily cover the site with snow (given the season), geotextile pads, flex net, swamp mats, or equivalent; • extend road or watercourse bores to avoid or minimize effects on the site; • realign the route to avoid the site; or • propagate rare plants or specific portions of sensitive ecological communities, via vegetative or reproductive means (e.g., harvesting of seed from the construction footprint or adjacent area, salvaging and transplanting portions of sod and surrounding vegetation or collecting of cuttings). Any new mitigation will be communicated to appropriate Project personnel including the Contractor.

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12.0 WILDLIFE SPECIES OF CONCERN DISCOVERY CONTINGENCY PLAN Wildlife Species of Concern Discovery Prior to Construction In the event that wildlife species of concern or their site-specific habitat is discovered during future wildlife studies, the discovery will be assessed and appropriate mitigation measures will be determined. The wildlife or habitat will be assessed by wildlife specialists based on the following criteria:

• the location of the wildlife or habitat feature with respect to the proposed area of development; • the presence of topographic features or vegetation to effectively screen the wildlife or habitat from construction activities; • the timing of construction versus the critical timing constraints for the species; and • the potential for an alteration of construction activities to minimize or avoid sensory disturbance. The suite of mitigation options that may be implemented includes the following:

• abide by seasonal timing constraints within the recommended set back distances; • abide by daily timing restrictions on construction activities; narrow down the proposed area of disturbance and protect the site using snow fencing and signage; • alter or delay construction activities to avoid sensory disturbance (e.g., no burning); • extend road or watercourse bores to avoid or minimize effects on the site; • inform all users of access restrictions in the vicinity of fenced sites; • realign the route to avoid the site; • install nest boxes or platforms or otherwise replace or enhance habitat during reclamation or restoration; and • relocate nests or other habitat features or individuals if practical and monitor post-construction response. In the event a discovery is made during supplemental wildlife surveys, the appropriate mitigation will be implemented and the Environmental Alignment Sheets and/or other Project-specific environmental documents will be amended to incorporate these measures.

Wildlife Species of Concern Discovery During Construction In the event that wildlife species of concern or their site-specific habitat are discovered during construction, the discovery will be assessed based on the criteria provided above and appropriate mitigation measures will be implemented from the list outlined below.

1. Suspend work immediately in the vicinity of any newly discovered wildlife species of concern. Work at that location may not resume until the measures below are undertaken. 2. Notify the Environmental Inspector(s) or designate(s) who will notify the Construction Manager. 3. The Environmental Inspector(s) or designate(s) will assess the discovery and either allow construction to be resumed or, in the event of a confirmed or potential discovery, proceed by notifying: • applicable government agencies (e.g., provincial regulator, Environment Canada) as required (Appendix 1B); and • the Company’s Wildlife Consultant. 4. The Company’s Wildlife Consultant may deem it necessary to visit the site to develop an appropriate mitigation plan in consultation with the Company’s Environmental Advisor. The mitigation measures available include those listed above.

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13.0 CULTURAL RESOURCE DISCOVERY CONTINGENCY PLAN If unanticipated cultural resources are identified during construction activities, the Cultural Resource Discovery Contingency Plan will be implemented. This plan applies to all personnel of the Company, their Contractor(s) and subcontractors during construction of the Project and is designed to address the following unanticipated cultural resource sites:

• traditional land and resource use (TLRU) sites • heritage sites, including historic, archaeological and paleontological resources • human remains In the event of the discovery of an unanticipated cultural resource site during construction, regardless of site type, the Company will rely on the following four steps to inform decision-making.

Step 1 – • Suspend work immediately near the suspected find; do not further disturb the location. Encounter • Immediately notify the Environmental Inspector of the location and nature of the suspected find, who will notify the Company’s Construction Manager or designate and Environmental Advisor. • A temporary protective buffer area may be necessary to immediately protect the site, as determined by the Environmental Inspector. The size of the buffer will reflect the nature and extent of the site. Step 2 – • The Environmental Inspector(s) will determine if a travel lane can be accommodated and Initial maintained without affecting the integrity of the site. Access will be restricted or prohibited as Assessment necessary to ensure no additional disturbance to the site occurs. The Construction Manager or designate will be responsible for determining what travel is essential and ensuring restrictions are met. • The Environmental Inspector(s) will work with the Construction Manager or designate to collect information and undertake an initial non-invasive assessment of the site. The Environmental Inspector(s) will ensure any necessary interim protective measures (e.g., flagging, temporary fencing/barriers) are promptly implemented. • Upon advice of the Environmental Advisor, a Heritage Resource Specialist will be consulted to aide in the initial assessment of the site as necessary. If human remains are suspected but not confirmed, the Construction Manager or designate will immediately contact the Heritage Resource Specialist to determine if the measures for human remains must be enacted. • No materials are to be collected by personnel except for the Environmental Inspector(s) or the Heritage Resource Specialist where collection is warranted to ensure preservation/protection. Any materials collected by the Environmental Inspector(s) will be provided to the Heritage Resource Specialist for appropriate analysis and curation, as necessary. • If human remains are suspected, no collection of any kind is permitted and the site must be secured. • If the initial assessment does not indicate cultural origin or human remains, no further action is necessary and construction can resume Step 3 – • The activities in this step are dependant on the outcomes of the initial assessment and will be Consultation implemented as identified below. and TLRU Heritage Sites Human Remains1 Engagement • The Heritage Resource • The Heritage • If there are clear visible indications that Specialist will develop Resource Specialist the remains are human, the Company an appropriate will develop an will contact the RCMP or regional mitigation plan in appropriate police immediately (Law Enforcement) consultation with the mitigation plan in (see Appendix 1B of the EPP). Environmental Advisor. consultation with the • If the remains are confirmed to be • Any potentially affected Environmental human and appear to be of some Aboriginal groups will Advisor and the antiquity (e.g. buried, aged), the be informed of the responsible Heritage Resource Specialist will discovery and the Provincial provide initial notification to the mitigation to be ministry/agency. Provincial ministry/agency responsible implemented. for heritage resources.

1 If the remains are not human, the activities listed below “Heritage Sites” of this step will be implemented.

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Step 3 TLRU Heritage Sites Human Remains (cont’d) • The Environmental • The Environmental • The Company will also provide Advisor and/or the Advisor and/or the notification to potentially affected Heritage Resource Heritage Resource Aboriginal groups to determine Specialist will review Specialist will review appropriate next steps, as guided by the planned mitigation the planned the Provincial ministry/agency strategy with potentially mitigation strategy responsible for heritage resources. affected Aboriginal with the responsible • Project personnel will allow Law groups. Provincial Enforcement to conduct their ministry/agency and investigation without interference. The will implement Construction Manager or designate will additional measures serve as point of contact for Law if required. Enforcement personnel and any other officials (e.g. coroner, forensic specialists) associated with any investigation, until such a time that a Company communication or management representative assumes a liaison role, if necessary. • If Law Enforcement determines that the site is a crime scene: • Subsequent procedures will follow applicable regulations for found human remains, and Law Enforcement will manage the site. The Construction Manager or designate will support the investigation and work will not resume until the investigation is complete and authorization to resume construction is received from Law Enforcement. • If Law Enforcement determines that the site is not a crime scene: • Law Enforcement will engage the appropriate Provincial ministry/agency responsible for heritage resources, or will advise the Construction Manager or designate or Heritage Resource Specialist to engage the agency directly. The responsible Provincial ministry/agency has the authority and responsibility to determine the appropriate course of action in relation to found human remains of an archaeological nature. • In consultation with the Environmental Advisor, the Heritage Resource Specialist will either support or complete an investigation as required by applicable provincial laws, regulations, permits and guidelines pertaining to found burial sites. • If Aboriginal origin is suspected, the Company will provide notification to appropriate Aboriginal groups and engage to determine appropriate next steps, as guided by the responsible Provincial ministry/agency. • The Construction Manager or designate will ensure that other potentially affected parties are engaged as appropriate (e.g., the landowner or local land authority).

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Step 4 – • The find will be handled in accordance with all applicable requirements and permits, and in Resolution consideration of the recommendations of potentially affected Aboriginal groups to the degree that provincial regulations allow. • Approved mitigation will be implemented to the satisfaction of the responsible Provincial ministry/agency. Additional agreed-upon mitigation between the Company and potentially affected Aboriginal groups may also be implemented, if applicable. • Work may resume once all obligations are met as verified by the Environmental Inspector(s) and/or the Construction Manager or designate.

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APPENDIX 1F

MANAGEMENT PLANS

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

TABLE OF CONTENTS Page 1.0 CHEMICAL AND WASTE MANAGEMENT PLAN ...... 1 1.1 Purpose ...... 1 1.2 Guiding Principles ...... 1 2.0 TRAFFIC CONTROL MANAGEMENT PLAN ...... 7 2.1 Purpose ...... 7 2.2 Preconstruction ...... 7 2.3 Construction ...... 7 2.4 Post-Construction ...... 8 3.0 HYDROVAC SLURRY HANDLING MANAGEMENT PLAN ...... 9 3.1 Purpose ...... 9 3.2 Scope ...... 9 3.3 Pre-Excavation Contamination Risk Screening ...... 9 3.4 Low Risk of Contamination or Non-Contaminated ...... 9 3.5 Potential Risk of Contamination ...... 10 3.6 Additional Requirements ...... 10 4.0 TRENCHLESS CROSSING MANAGEMENT PLAN ...... 12 4.1 General Measures...... 12 4.2 Emergency Response Equipment ...... 12 4.3 Monitoring ...... 13 5.0 BREEDING BIRD AND NEST MANAGEMENT PLAN ...... 15 5.1 Regulations, Guidelines, and Codes of Practice ...... 15 5.2 Breeding Bird and Nest Management ...... 16 6.0 ACCESS MANAGEMENT PLAN ...... 21 6.1 Purpose ...... 21 6.2 Goals and Objectives of the Access Management Plan ...... 21 6.3 Selection of Access Management Measures and Locations ...... 22 6.4 Access Management Measures ...... 22 6.5 Access Management Measures Monitoring ...... 26 7.0 KEY WILDLIFE AND BIODIVERSITY ZONE PROTECTION PLAN ...... 27 7.1 Project Background ...... 27 7.2 Key Wildlife And Biodiversity Zone Guidelines ...... 32 7.3 Approval Standards and Conditions ...... 34 7.4 Project Protection Measures ...... 35 7.5 Consultation ...... 41 7.6 References ...... 41 8.0 AMPHIBIAN MANAGEMENT PLAN ...... 42 8.1 Purpose ...... 42 8.2 Definitions ...... 42 8.3 Mitigation Measures ...... 43 8.4 Regional Considerations and Permits...... 46 8.5 References ...... 46

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TABLE OF CONTENTS (cont'd) Page 9.0 BEAR MANAGEMENT PLAN ...... 47 9.1 Background ...... 47 9.2 Objectives ...... 47

LIST OF FIGURES Figure 5-1: Migratory Bird Nesting Zones in Canada ...... 17 Figure 5-2: Primary Nesting Periods by Nesting Zones and Broad Habitat Types ...... 18 Figure 5-3: Breeding Bird Nest Search ...... 20 Figure 7-1: Section 58 Facilities and Activities – Key Wildlife Biodiversity Zones Overview Elmworth Section ...... 28 Figure 7-2: Section 58 Facilities and Activities – Key Wildlife Biodiversity Zones Overview Karr Section ...... 29 Figure 7-3: Section 58 Facilities and Activities – Key Wildlife Biodiversity Zones Overview Deep Valley Section ...... 30 Figure 7-4: Section 58 Facilities and Activities – Key Wildlife Biodiversity Zones Overview Deep Valley Section ...... 31

LIST OF TABLES Table 6-1: Potential Access Management Measures ...... 23 Table 7-1: Number of Project Components that Intersect KWBZs ...... 27 Table 7-2: Preliminary Project Schedule ...... 32 Table 7-3: Project Specific Non-standard Mitigation for KWBZ ...... 34 Table 7-4: Project Protection Measures1...... 35 Table 7-5: Applicable Regulatory Consultation ...... 41 Table 8-1: Amphibian Species of Management Concern ...... 43

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1.0 CHEMICAL AND WASTE MANAGEMENT PLAN

1.1 Purpose The Chemical and Waste Management Plan has been prepared to provide guidelines for dealing with the generation of Project waste, and to provide guidelines for dealing with the procurement, storing and handling of hazardous materials and chemicals required for the Project.

This plan outlines specific measures to be followed by all Company employees and contractors involved with the construction of the Project. The plan is designed to ensure that chemicals and wastes are procured, handled, stored and disposed of in an environmentally responsible manner, thereby maintaining ecological and cultural integrity. This plan will reduce the likelihood of an accidental release of potentially hazardous waste products into the environment during construction.

This plan applies to all employees, contractors and consultants who conduct work on behalf of the Company during construction of the Project. All employees, contractors and consultants will abide by all federal, provincial and local requirements for the storage, handling, transport, disposal and release reporting requirements of all products and waste materials that are potentially hazardous to human health and the environment.

The Environmental Inspector(s) or designate(s) are responsible for ensuring compliance with TransCanada’s Environmental Guidelines and all applicable codes, regulations and industry standards for waste management and handling chemicals. Where a discrepancy occurs, the most stringent requirements apply. In the event of a release (i.e., spill), the Release Contingency Plan (see Appendix 1E of this EPP) will be implemented. The Release Contingency Plan sets forth the lines of communication and procedures to follow in order to facilitate containment and clean-up should a release occur.

1.2 Guiding Principles The Company is committed to performing its activities in an environmentally responsible manner. The following general guiding principles have been incorporated into this plan:

• reasonable preventative measures will be taken to avoid the release of wastes and hazardous materials into the environment;

• all waste and hazardous material releases will be reported to the Environmental Inspector(s) or designate(s) and to the appropriate authorities, if warranted;

• all waste and hazardous material releases will be cleaned up promptly and thoroughly; and

• waste and hazardous materials will, to the extent feasible, be recycled, disposed of or moved to an approved area as required.

1.2.1 Application This Chemical and Waste Management Plan applies to the construction footprint, all staging areas, construction yards and public roadways being used in association with the Project. Awareness of these requirements will be integrated as appropriate into preconstruction training and orientations.

1.2.2 Description of Wastes and Chemicals Potential Project related wastes have been divided into two categories for discussion of storage, handling and disposal procedures.

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Solid Nonhazardous Wastes – include garbage and debris generated through the activities of personnel during construction and construction footprint reclamation. These wastes are nontoxic in nature and include, but are not necessarily limited to:

• food wastes; • pipe tape and coating; • spent welding rods; • grinder pads; • styrofoam and plastics; • wood; • wire; • survey stakes/flagging tape; • used geotextile; and • metal strapping.

Hazardous Wastes – each province has its own criteria for determining if waste is hazardous and this varies from province to province. Most jurisdictions identify hazardous waste by listed substances and by characteristics defined in their respective regulations. Hazardous waste generally has one or more of the following characteristics:

• flammable; • reactive; • corrosive; • toxic; • leachable toxic (e.g., metals and BTEX); and • radioactivity (e.g., activity levels for Naturally Occurring Radioactive Materials (NORMs)).

Industrial Wastes - include wastes and products generated or utilized during construction. These materials may contain quantities of potentially toxic substances in the form of residues and include, but are not necessarily limited to:

• used oils (engine oil, transmission/drive train oil, hydraulic/lube oil, gear oils, lubricating greases); • used lube filters; • spent grease cartridges; • used antifreeze (containers and cans of ethylene glycol, propylene glycol); • contaminated soil, vegetation and/or absorbents that may contain hydraulic fluid, gasoline, diesel or lube oil; • used solvents; • used batteries (automotive/equipment); • film processing waste liquids; • spent cleaning products and associated materials rags; • NORMs; • polychlorinated biphenyls (PCBs); and • asbestos.

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Potential Project related chemicals that are likely to be found on the construction sites include, but are not necessarily limited to:

• batteries; • cleaning` products; • fuels (gasoline, diesel, propane); • lubricants (engine oil, transmission/drive train oil, hydraulic oil, gear oil, lubricating grease); • coolants (ethylene glycol, propylene glycol); • paints and solvents; • film processing chemicals; and • glues (including epoxy and urethane coating products) and cements.

1.2.3 Mitigation Measures All employees, contractors and consultants of the Company will be required to comply with applicable regulations for the containment, handling, storage, use and disposal of wastes and chemicals. The following are minimum requirements.

General Measures

1. Construction yards and staging areas that are designated as an industrial waste or chemical storage area will be selected and designed to: • avoid wetlands, watercourses, sensitive vegetation, highly permeable soils, steep slopes and water supply wells when feasible; • prevent vehicle incidents by providing unobstructed access (for delivery, disposal and emergency vehicles); • provide safe storage areas, including secondary containment, for all chemical liquids and hazardous wastes in accordance with applicable regulatory requirements; and • provide unobstructed access/egress to/from emergency response materials and equipment.

2. All Project staff with waste management and hazardous materials responsibilities will be educated in accordance with regulatory requirements specific to the Project. All personnel shall understand their responsibilities for proper handling, identification, documentation and storage of wastes and hazardous materials. 3. An appropriate number of portable toilets shall be made available to ensure each crew has ready access to washroom facilities. The facilities will be serviced and cleaned regularly and will be adequately secured. All site personnel are to use portable toilets as provided. 4. The Company shall ensure that a hazardous waste generator number or equivalent is in place, for inclusion on appropriate shipping documentation. Release Prevention and Response Equipment

1. The Contractors' equipment will be clean and in good operating condition. 2. Appropriate measures will be taken immediately to limit the spread of the contamination, in accordance with the Release Contingency Plan (see Appendix 1E of this EPP). 3. Prior to construction kick-off, the Contractor will ensure that all release containment (spill kits) and recovery equipment and materials are onsite or readily available.

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4. Bulk fuel trucks, service vehicles, and pick-up trucks equipped with box-mounted fuel tanks will carry: • fire extinguishers; • shovels; • an impermeable barrier for placing under vehicles to be serviced; and • hydrocarbon release containment (spill kit) complete with a minimum of 10 kg of sorbent material for clean-up of small releases.

5. Equipment containing fuel or other hazardous materials or chemicals shall have release containment (spill kit) included with the unit. In the case of non-mobile equipment or equipment stationed at a project location for an extended period of time, release containment shall be placed adjacent to the location. 6. Sorbents, barrier materials (e.g., impermeable liners, etc.), shovels, a water boom, and 210 L storage drums will be stockpiled at the Contractor yards/staging areas to respond to small releases. 7. When working in or near (i.e., within 100 m) of a watercourse or waterbody, release containment (spill kits) shall include booms, sorbent pads or a functionally equivalent containment structure, and they shall be onsite in the unlikely event of an accidental release of chemicals, hazardous materials or waste.

Waste and Chemical Handling

1. Personnel who will be handling waste materials will possess valid WHMIS training. 2. Personnel who will be handling or transporting waste or chemicals will have current Transportation of Dangerous Goods (TDG) certification. 3. During waste and chemical handling activities, employees and/or contractors will use appropriate personal protective equipment to prevent any contact with material. 4. Procedures for safe loading and unloading of products will be followed • service vehicles will be equipped with automatic shut-off valves; • brakes will be set; • the vehicle will be grounded if the product is flammable; • the operator will observe loading and unloading activities at all times; and • when complete, the operator will examine all outlets for leakage and take corrective action if warranted. Waste and Chemical Storage

1. An appropriate number of waste and recycling receptacles will be made available during the Project. 2. Designated industrial waste storage areas at a facility shall be designed to meet all applicable federal and provincial regulations. 3. Hazardous materials will be stored in designated storage area(s). Short term hazardous material storage on the right-of-way (ROW) may be designated at the discretion of the Environmental Inspector(s) or designate(s), if required for specific tasks. 4. Hazardous materials and industrial wastes will be stored greater than 100 m from a wetland, watercourse or waterbody, where feasible. 5. Designated storage areas will be clearly identified and secured. Waste stored in any containers must be clearly labelled to comply with TDG Act, WHMIS regulations, Canada Occupational Health and Safety Regulations (SOR/86-304) and National Fire Code of Canada as well as applicable provincial regulations. 6. Hazardous wastes and chemicals will be segregated according to the hazard present as per the National Fire Code of Canada as well as applicable provincial regulations.

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7. Secondary containment may be required depending on the location, type, volume and duration of the waste or chemical being stored. Secondary containment will be in accordance with applicable federal, provincial and municipal requirements. 8. Containment devices will be constructed from suitable metallic or non-metallic materials capable of containing the stored product. Liners used for secondary containment shall be placed and maintained to ensure their effectiveness and intended use. 9. Secondary containment areas not protected from the elements will be monitored regularly to ensure that ice, snow, or rainwater have not decreased the volumetric capacity for storage of a release to be less than 110% of the aggregate storage volume of the containment area. Water accumulated within a secondary containment structure may be removed if authorized by the Environmental Inspector(s) or designate(s). If there is visible hydrocarbon sheen, the water will be collected for proper storage and disposal. 10. Containers and tanks will be closed when not in use. Drain valves will be locked to prevent accidental or unauthorized releases. 11. Secured non-hazardous materials (i.e., skids, geotextiles, survey stakes etc.) that pose no threat to the surrounding ecosystem will be neatly stockpiled in locations along the ROW for disposal. The disposal frequency is dependent upon the type of material stockpiled and will be determined by the Environmental Inspector(s) or designate(s). 12. The Contractor will visually inspect designated hazardous material and chemical storage areas and aboveground tanks on a regular basis, as well as when fuel tanks are refilled. The Contractor shall maintain inspection records in accordance with applicable federal, provincial and local requirements, and upon request provide the inspection records to the Company. Identified problems or deficiencies shall be corrected in a timely manner. 13. The Contractor will remove all secondary containment structures at the end of the construction phase, and return the impoundment area to its original contours and appearance, including establishing appropriate drainage patterns and vegetation cover.

Waste Disposal

1. All waste materials will be disposed of in accordance with federal and provincial legislation and municipal/regional regulations as required. 2. Each construction site will be equipped with adequate garbage receptacles for solid non-hazardous wastes and debris. These materials will be collected as required and disposed of at approved locations. Food wastes will be stored in animal proof (bear-proof) containers and transported to an appropriate landfill site. 3. Receptacles for industrial wastes generated during construction will be provided in order to keep them segregated from non-hazardous waste. Used oil and oil filters will be placed in sealed containers and delivered for disposal by a qualified service contractor. 4. Receptacles for recycling various products (e.g., paper and tin) will be available at Project construction yards and camps and will be hauled to appropriate recycling depots. 5. NORMs will be transferred to approved locations by a qualified contractor for final disposal. 6. PCB treatment or disposal facilities must be pre-approved by the Company. This includes third party waste brokers, consultants and contractors. PCB concentration must be thoroughly characterized prior to special treatment or disposal.

Documentation and Record Keeping

1. Safety Data Sheets (SDSs) will be available for each product stored at a particular construction yard or staging area.

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2. The Contractor will maintain a record of the routine inspections performed on the industrial waste storage area(s). The Contractor will furnish the Company construction office with any and all inspection reports monthly. 3. Shipping documents for hazardous waste (e.g., Federal Movement Document, manifests, recycle docket, etc.) will be reviewed and signed by an authorized Company representative with current TDG certification when hazardous waste is transferred from a temporary storage facility for transport to a final disposal location. In some provinces, a copy of the manifest must be sent to the regulator. 4. The Environmental Inspector(s) or designate(s) will be provided with copies of hazardous waste shipping documents. Hazardous waste shipping documents (e.g., Federal Movement Document, manifests, recycle docket, etc.) must be reconciled. Until notification that the waste has been received at its final disposal location, the waste is the responsibility of the Company.

Provincial Timeframes for Sending in Copy #1 of the Manifest/Movement Document and Manifest Reconciliation

Timeframe for Timeframe to Reconcile Province Authority Sending Manifests to Manifests Authority British Columbia BC Ministry of 3 days No timeframe specified. Environment (MOE) Note: If the receiver does not receive Copy 6 from the consignee, the consignor is required to notify the Ministry within 10 days after the shipment occurred. Alberta Alberta Environment 2 business days No timeframe specified. and Parks (AEP) Note: Receiver must send Copy #6 to the generator within 2 days of receipt. Alberta Alberta Energy 60 days 60 days Regulator (AER) Saskatchewan N/A Not required. Not required. Manitoba Manitoba Sustainable Not required. 10 days Development Ontario ON Ministry of 3 working days No timeframe specified. Environment & Climate Change (MOECC) Note: The receiver removes Copy 6 (Brown) of the manifest and returns it to the generator shown on the manifest within three working days after the transfer. Quebec N/A Not required. Not required.

5. Copies of manifest records must be kept in a central location for a minimum of two years after the waste has arrived at its final disposal location. Shipping documents for hazardous wastes must be kept with the Project files or at the nearest Company facility or office, in accordance with provincial requirements. All provinces stipulate a two-year retention schedule.

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2.0 TRAFFIC CONTROL MANAGEMENT PLAN This plan deals with the management and control of construction traffic on the construction footprint and temporary access routes. It covers activities during preconstruction, construction and post-construction phases of the Project.

2.1 Purpose The Traffic Control Management Plan provides guidelines for vehicular use on the construction footprint and associated access roads. The intent is to minimize disturbance resulting from construction on these lands, particularly in riparian areas and in areas of high erosion hazard. All vehicle and equipment operators will adhere to the contingency measures for wet/thawed conditions outlined in the Wet Soils Contingency Plan (see Appendix 1E of this EPP).

The plan objectives will be accomplished by minimizing the development of access routes, selecting appropriate access routes that cause the least disturbance, managing traffic on these routes and determining appropriate as-left treatment at the completion of the Project.

2.2 Preconstruction The applicable provincial authorities will be notified of all access road upgrading requirements and the Company will accommodate continued public access during construction whenever feasible.

The Project will adhere to the following principles:

1. To prevent inadvertent trespass, stake the approved construction footprint to clearly delineate all boundaries. 2. All motorized vehicle traffic, including ATV, Argo and snowmobile traffic, will be confined to the approved route, access roads or trails except where specifically authorized by the appropriate authority. 3. Vehicle travel across wetlands and riparian areas should be reduced to the extent feasible.

The development and maintenance of access roads required prior to, or during construction, will adhere to the relevant requirements set out in this EPP.

2.3 Construction

During construction, traffic will adhere to the following guidelines:

1. All Project personnel and other visitors to the ROW will participate in the Contractor orientation program. 2. All access points to the construction footprint will be flagged and signed to discourage public use. 3. All vehicular traffic will be restricted to the approved and staked construction footprint. 4. Construction and inspection personnel and visitors to the construction footprint and other work sites will receive instruction on locations suitable for parking vehicles and equipment. 5. The Company, Contractor and all subcontractor personnel will avoid areas that are fenced or staked and abide by any restrictions on in/out privileges that are implemented in areas requiring special protection. 6. The Company, Contractor and all subcontractor personnel will limit unnecessary travel on the construction footprint during the course of the work. 7. Special measures such as the limiting of construction traffic or implementing of swamp mats or matting may be warranted in areas with poorly-drained and organic soils (see the Wet Soils Contingency Plan in Appendix 1E of this EPP). 8. Construction personnel will be transported between construction yards and the construction site by multi-passenger vehicles to the extent practical, in order to minimize vehicle traffic.

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9. Control measures may be put in place to ensure traffic adheres to special restrictions that are in effect (e.g., narrowing of work space to limit impact on a species of concern). 10. 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. 11. All Project-related vehicles will follow applicable traffic, road-use and safety laws. 12. All vehicle traffic will avoid unnecessary wheel spin. 13. During non-frozen conditions, equipment travel, particularly that of heavy and/or tracked equipment, will make use of the stripped and graded areas for travel and passing. 14. Stringing trucks require extra turning radius. Consequently, approaches to the ROW or existing public roads will be wider when used for stringing trucks. Where turnarounds are required on the ROW, extra space will be required on the travel side of the ROW. Previously disturbed areas will be used for this purpose, when feasible. Stringing trucks will be limited to access roads developed for their use. Turn around areas require approval by applicable government agencies.

2.4 Post-Construction After construction is complete, restoration efforts will be initiated and traffic will adhere to the following principles to ensure there is as little disturbance as practical.

1. All temporary construction access roads and shoo-flies will be reclaimed to preconstruction conditions or restored as per this EPP. Newly created access points will be blocked unless otherwise directed by the Company or the responsible regulatory agency. 2. Vehicle traffic will be minimized on newly seeded areas until ground cover is re-established. 3. Routine access to the construction footprint for operation, maintenance and monitoring activities will be by way of pre-existing roads and trails wherever feasible. Where travel on the construction footprint in the vicinity of important vegetation is required (e.g., during reclamation monitoring) foot travel will be used whenever feasible. ATV/Argos will be used if necessary. 4. Efforts to control off-road vehicle use will be coordinated with the appropriate authorities and will continue until the construction footprint has been satisfactorily reclaimed. Methods to control access may include one or a combination of the following: • posting of appropriate signage at all points of access; • create a visual barrier to reduce line of sight; • installation of locking gates and fencing; and/or • installation of slash or rock barriers.

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3.0 HYDROVAC SLURRY HANDLING MANAGEMENT PLAN

3.1 Purpose To provide a management plan for hydrovac slurry handling during construction activities in a manner that is protective of the environment demonstrates compliance with applicable regulations. This management plan applies to all hydrovac slurry generated as a result of construction activities in Canada.

3.2 Scope This plan is to be used in conjunction with any relevant TransCanada standards for excavation activities and applies to all new projects, facility upgrades and modifications for all operating entities in Canada.

3.3 Pre-Excavation Contamination Risk Screening The management of hydrovac slurry must be proportional to the environmental risk inherent to the Project or undertaking. Requirements for sampling hydrovac slurry is managed through a risk based approach. The determination of the potential for contamination is conducted during the pre-excavation contamination risk screening.

Selection of hydrovac slurry management methods is determined based on the likelihood of encountering contamination within the planned hydrovac excavation area. Historical information/records within the area(s) proposed for hydrovac excavation will be reviewed where available. Contaminant risk screening will consider the following questions to determine if there is a low risk or a potential risk of contamination.

1. Are there any visual indications of potential contamination [surface staining, leaking gas, frozen soil (not in winter), stressed vegetation]? 2. Does the project involve upgrading and/or decommissioning and/or maintenance of existing facility infrastructure (e.g., valves, risers, launchers/receivers, but excluding line pipe outside of fenced facilities.)? 3. Is the project being completed on an existing facility site and/or in the vicinity of existing or historical facilities/equipment that are a potential source of contamination? 4. Is the adjacent surrounding land considered commercial or industrial land use and is there a risk for onsite contamination due to migration from these sites?

If the answer to all of these questions is NO, the hydro excavation area is considered low risk (Section 3.4). If any of these questions are answered YES, the hydro excavation area is considered potential risk (see Section 3.5).

3.4 Low Risk of Contamination or Non-Contaminated Low risk of contamination refers to slurry which is anticipated to be free of impact from suspected contaminants based on the pre-excavation contamination risk screening or pre-construction sampling.

• Hydrovac slurry from new disturbances is generally of mineral soil and water content and has a low risk of contamination, therefore onsite disposal is the preferred method if subsidence is not a concern. The disposal area must be in a location that has had the surface materials removed. If a soil berm is required to contain slurry, soil material used to construct the berm shall be of subsoil or an alternative material capable of containing the slurry. This decision must be approved by the TransCanada Environmental Advisor or designated environmental field representative.

• Non-contaminated slurry can either be temporarily stored onsite in bermed containment (or in other containers approved by the Project) to ensure no uncontrolled surface run-off or release into the ground or transported to an approved storage or disposal facility.

• Non-contaminated slurry may be released into the hydrovac excavation if future subsidence of the site is not a concern and the area is fenced until the tailings are dry.

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• Non-contaminated slurry may be used as clean fill onsite or at another TransCanada property only. Water from non-contaminated slurry can be pumped on site or removed as non-contaminated, following approved dewatering and water management practices.

• If, during hydro excavation, evidence of contamination is encountered, manage the slurry as Potential Risk of Contamination (Section 3.5).

3.5 Potential Risk of Contamination Slurry shall be considered potentially contaminated where results from the pre-excavation risk screening indicated a potential for contamination, pre-construction sampling has confirmed the presence of contamination, or contamination is encountered during hydro excavation. Appropriate storage, characterization and disposal of the slurry is required. Arrangements must be made for temporary storage of slurry onsite in adequate structures, approved transportation, and final disposal when working in this scenario. Waste receiver facilities must have the required permits/approvals from the provincial regulator to accept contaminated slurry wastes. If there is insufficient room for storage, arrange for appropriate temporary storage offsite.

If sufficient characterization sampling and analytical review is conducted on the slurry phases to ensure that the sediment and water are not contaminated, the material can be managed as per the Low Risk Scenario in section 3.4. Known or potentially contaminated slurry shall be kept separate from non- contaminated slurry.

Known or potentially contaminated hydrovac slurry may be temporarily stored in bermed and lined impermeable containment until a disposal location for the slurry has been determined. Known or potentially contaminated hydrovac slurry MUST NOT be allowed to drain onto or into the ground.

3.6 Additional Requirements • The Contractor is responsible to ensure that all hydrovac equipment and more specifically the equipment holding tanks are clean and free of contaminants prior to arriving on site to prevent any potential for introduction of new contaminants. Hydrovac equipment will be inspected and approved for cleanliness, by the Environmental Inspector(s) or designate(s). Upon request by the Company, the Contractor must provide written proof of cleanliness. If temporary storage is to be constructed with subsoil (e.g., sump or bermed area), the surface materials must be removed from the area. The area constructed must be able to contain slurry and prevent any migration in a vertical and horizontal direction.

• The hydrovac contractor may temporarily store slurry in their trucks or at a site that is designed to safely store slurry. Use clean oilfield storage tanks or metal slop bins for temporary storage if other more practical storage options (i.e., temporary pits) are not desirable for the site.

• Only hydrovac slurry is to be put into a hydrovac slurry storage system. Do not mix other waste materials into an area designated for management of hydrovac slurry. Water used as part of the hydrovac system is permitted but storage capabilities need to be considered.

• The Contractor will ensure that the Environmental Inspector(s) or designate(s) have reviewed and approved disposal site prior to starting hydrovac operations.

• Hydrovac slurry storage areas must be secure to ensure no hazards to TransCanada personnel, contractors, public and/or wildlife.

• If near water bodies and/or environmentally sensitive areas, utilize any topographical features that may create a physical barrier that would prevent the migration of slurry towards the sensitive area.

• Slurry storage areas are not to be placed on known and/or previously contaminated areas.

• Ensure road weight restrictions are adhered to.

• Salvage topsoil prior to hydrovac use in all areas with agricultural potential.

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• Wet hydrovac slurry cannot be sent to a landfill even if it is not contaminated. Wet hydrovac slurry can be disposed of by the hydrovac contractor to a licensed treatment or disposal facility where accepted. Appropriate documentation must be provided to the Company to verify that hydrovac slurry disposal is in accordance with regulatory requirements and to the satisfaction of the Company

• DO NOT pump hydrovac slurry water into a watercourse or waterbody. DO NOT pump onto a landowner’s property unless approval is provided by the Company.

• Contaminated and potentially contaminated slurry needs special handling, storage, and disposal requirements. Any slurry that is contaminated and has the potential to be hazardous requires even more stringent precautions. If contamination is encountered during hydro excavation, ensure characterization of the slurry occurs before it is transported (to temporary storage or disposal facility) so that it can be classified appropriately (e.g., Hazardous Waste classification/ Transportation of Dangerous Goods).

• All hydrovac holes shall be adequately back filled with mineral soil or other materials as directed by the owner of the facilities, to ensure settling of material does not pose a hazard for wildlife, livestock or the general public.

• Monitoring of the slurry for indications of contamination should be ongoing during the hydrovaccing activities.

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4.0 TRENCHLESS CROSSING MANAGEMENT PLAN

4.1 General Measures

1. Ensure that supervisory personnel are aware of this management plan prior to commencement of drilling activity. 2. Arrange for access beyond the boundaries of the Project’s surface rights agreement along the drill path to monitor, contain and clean-up potential inadvertent drilling fluid releases. 3. Ensure that drilling mud composition is limited to bentonite-based systems (e.g., bentonite, water and industry standard additives) or polymer-based systems (e.g., synthetic or modified natural polymers such as guar gum, xanthan gum, starch, water and industry standard additives). All bentonite- and polymer-based systems shall meet applicable regulatory requirements and shall be limited to those that in its composition and concentration, should an interaction with the environment occur, do not result in a significant adverse effect to the environment. At the Company’s request the Contractor shall provide all product Safety Data Sheets (SDSs) and Microtox reports for review and approval of the products and/or additives proposed in the drilling system. 4. The Company must approve all drilling mud additives and concentrations prior to use. 5. Construct a sump and berm at the entry and exit points with a capacity adequate to capture anticipated volumes of drilling mud that could be released during pullback and other drilling operations. 6. Ensure there is sufficient storage capacity (i.e., sumps or tanks) at the entry and exit pads for containment of drilling mud during all drilling operations. If HDD mud sumps are proposed for storage, (i.e., not associated with entry or exit pits) they must be approved by the Company prior to excavation. 7. Develop a clean-up plan, prior to drilling. The plan will be prepared by the drilling contractor in consultation with the Company inspection staff. Acquire the appropriate approvals to access the release area if off the construction footprint and for mud pump-off. 8. Reclaim entry and exit sumps that contained drilling mud immediately after completion of drilling activities to meet equivalent land capability objectives as per the applicable regulatory requirements.

4.2 Emergency Response Equipment

1. The following equipment and supplies shall be onsite in sufficient quantities at the entry and exit points prior to commencement of drilling operations. The equipment and supplies shall be maintained and restocked as required during drilling operations to ensure sufficient quantities are available to contain any inadvertent drilling mud releases: • Sandbags, filled; • filter cloth (e.g., silt fence); • T-bar posts; • post pounders; • light towers, flashlights or headlamps; • shovels; • 6 mil polyethylene; and • 2-trash pumps c/w sufficient lengths of leak-free hose and suction heads.

2. Vacuum truck(s) shall be onsite during pilot hole, reaming and pullback phases. During the pilot hole phase, when intercept drilling operations are taking place, vacuum trucks shall be located on the entry and exit sides. During reaming and pullback phase, vacuum truck(s) are required on the side to which fluids are returning, at minimum.

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3. Maintain the appropriate water quality sampling equipment onsite during drilling operation to ensure that accurate water quality samples can be taken. Onsite equipment to be provided by the Company or their Contractor may include: • turbidity meter; • sampling pole; • chest waders; • water sample bottles (approximately 30 - 500 ml bottles); • boat; and • coolers.

4. Ensure that the water quality sampling program, if implemented, is in place prior to drilling and includes the following information: • sample locations (both an upstream control site as well as appropriate downstream sites); • frequency of sampling; and • sampling procedures.

The program will be amended if warranted by conditions.

5. Ensure that a minimum of three sets of walkie-talkies with spare batteries are onsite and available for use during monitoring operations. 4.3 Monitoring

1. Implement water quality monitoring plans to monitor for sediment events during drilling activities. Water quality monitoring will be used to avoid exceedance of the Canadian Council of Ministers of the Environment (CCME) (2001) guidelines and provincial limits for total suspended solids (TSS) and as early warning signs to potential problems during construction. 2. Supervisory personnel will be onsite at all times during drilling, reaming and pullback operations to ensure that emergency response measures will be implemented immediately and effectively. The Company will also assign inspection personnel to the site during all phases of drilling of the watercourse. 3. Monitor and record annular pressures throughout drilling. 4. Monitor and record the amount of fluid return to the mud tank/pit and the amount of make-up drilling fluid required in the mixing tanks during drilling of the pilot hole and hole opening (reaming). Maintain a detailed log of all drilling activities in order to correlate drilling status with potential inadvertent drilling fluid release events. 5. For the duration of drilling operations, monitor onshore portions of the drill path and surrounding area (i.e., within 50m either side of the drill path) for signs of drilling mud release. Onshore monitoring will be conducted approximately every 2 hours during drilling operations. Night-time monitoring will only be conducted beyond the drill path if a loss of circulation is suspected. Monitoring will continue for at least two hours after pipe pullback is complete. Personnel will be equipped with walkie-talkies to observe and communicate any sign of a release of drilling mud to the surface or in the watercourse. Monitoring walks should be logged and maintained on a tracking list at the drill location and shall be available for review. 6. Ensure that contact is maintained at all times between monitoring and drilling personnel. 7. Where site conditions warrant, establish instream monitoring stations to obtain water samples for visual inspection or turbidity measurement. The number and locations of monitoring stations will be determined by the Company, in consultation with a resource specialist and will vary depending on site- specific water crossing characteristics. The stations could be located approximately at the noted locations and intervals if pressurized drilling fluids or water are used.

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Downstream Monitoring Sampling Interval Sample Sites (approx.) (approx.) 25 m 2 hours 100 m 2 hours 200 m 4 hours 400 m 4 hours

Sampling frequency may be adjusted by the Company, in consultation with a resource specialist. Sampling intervals may increase if monitoring of drilling mud returns indicates that a release may have occurred; and may decrease if site conditions or monitoring to date indicates a lower risk of an inadvertent drilling fluid release. 8. On watercourses with ice cover, onsite conditions may allow visual monitoring of water quality by observing open reaches or, if safe, by augering and maintaining an open hole in the ice for sampling. Supply monitors with practical safety gear (e.g., ropes, ladders, inflatable boat, flotation coveralls) for traversing ice. Continue to evaluate ice conditions throughout the monitoring program. 9. If monitoring reveals sediment values are approaching threshold values, the Environmental Monitors will alert the Environmental Inspector(s) or designate(s) and work with them to develop corrective actions. If corrective actions are not successful, construction activities will be temporarily suspended until effective solutions are identified. 10. If the watercourse is frozen to the bottom, onsite conditions will not allow visual monitoring of water quality by observing open reaches or by augering and maintaining an open hole in the ice for sampling. Continue to visually monitor areas where early detection of an inadvertent drilling fluid release to surface would most likely occur.

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5.0 BREEDING BIRD AND NEST MANAGEMENT PLAN This Breeding Bird and Nest Management Plan (BBNMP) describes the implementation of standard measures employed by TransCanada for reducing the risk of ‘incidental take’ of birds. Incidental take is the inadvertent disturbance to, or destruction of, a bird or its nest or egg, which for most bird species is a contravention of federal, provincial, and territorial legislation (Environment Canada 2015a). The BBNMP is applicable to all TransCanada projects in Canada, although for new infrastructure projects (e.g., new pipelines, new facilities involving wildlife surveys), additional Project-specific BBNMP mitigation measures may be developed following the guidance provided in this Plan.

The Breeding Bird and Nest Management Plan applies to all employees, contractors and consultants who conduct work on behalf of TransCanada during construction. The plan has been prepared using guidance from Environment Canada regarding protection of migratory birds, but the mitigation measures described will apply to all breeding birds.

5.1 Regulations, Guidelines, and Codes of Practice

5.1.1 Federal There are legal obligations in Canada regarding the protection of migratory birds, as well as non-migratory birds. The following regulations apply to the protection of birds in Canada:

• Migratory Birds Convention Act, 1994 • Migratory Birds Regulation • Species at Risk Act, 2002, Section 32

The Migratory Birds Convention Act (MBCA) and the Migratory Birds Regulation (MBR) prohibit the disturbance or destruction of migratory birds and their nests and eggs in Canada. “Migratory bird” is defined by Section 2 of the MBCA, and generally includes most migratory species that are native or naturally occurring in Canada (Environment Canada 2013a). The MBCA and MBR apply to all lands and waters in Canada, regardless of ownership. Environment Canada is responsible for administering the MBCA on behalf of the federal government.

Birds not covered by the MBCA include grouse, quail, pheasants, ptarmigan, hawks, owls, eagles, falcons, cormorants, pelicans, crows, jays, kingfishers, and some species of blackbird. Although not covered by the MBCA, Provincial setbacks or other protection may apply to these birds.

Some bird species, including migratory and non-migratory bird species are protected under the Species at Risk Act (SARA). The Species at Risk Public Registry provides the current list of species protected under SARA. It is prohibited to remove the nest of any threatened or endangered species at any time if the species is likely to re-use that nest. Environment Canada is responsible for administering SARA.

5.1.2 Provincial and Territorial Provincial and territorial governments share responsibility with Environment Canada for the management of birds in Canada. Bird species not listed under the MBCA and SARA may, or may not, also be protected under provincial or territorial legislation. The following legislation applies to the protection of birds within each jurisdiction:

• Wildlife Acts (Alberta, British Columbia, Manitoba, Northwest Territories, Nova Scotia, Nunavut, Saskatchewan, Yukon) • Fish and Wildlife Act (New Brunswick) • Wild Life Act (Newfoundland) • Wildlife Conservation Act (Prince Edward Island)

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• Fish and Wildlife Conservation Act (Ontario) • An Act Respecting the Conservation and Development of Wildlife (Quebec)

Provincial or territorial legislation may include year-round protection of inactive nests of some species, and in some provinces or territories a permit may be authorized for the removal of an inactive nest of some species. In some jurisdictions, legislation may include species-specific protection, or exemption from protection (e.g., pest species that damage crops).

5.1.3 Guidelines and Codes of Practices Environment Canada provides avoidance guidelines to help make proactive decisions for reducing the risk of incidental take of migratory birds and their nests and eggs. Environment Canada cannot provide authorizations or permits for incidental take, and activities that affect migratory birds or their nests and eggs can result in violations of the Migratory Birds Regulation. Due diligence and best management practices must be followed to prevent contravention of the MBCA.

The following information sources were reviewed in the development of the BBNMP, and should be referred to for additional detail in the development of Project-specific BBNMPs:

• Environment Canada’s Avoidance Guidelines (2015b), and Guide for Developing Beneficial Management Practices for Migratory Bird Conservation (2013b).

• Draft Migratory Birds Convention Act: A Best Management Practice Developed for the Canadian Energy Pipeline Association document prepared for the (CEPA 2013).

• Other (e.g., provincial) applicable guidance documents and best management practices.

5.2 Breeding Bird and Nest Management

5.2.1 Breeding Bird General Mitigation and Management TransCanada is committed to avoiding incidental take of breeding birds. The following guiding principles, as stated by Environment Canada (2015a), have been incorporated into the BBNMP:

• Know your legal obligations;

• Avoid engaging in potentially destructive or disruptive activities in sensitive periods and locations in order to reduce the risk of affecting breeding birds; and,

• Develop and implement appropriate preventative and mitigation measures to avoid the risk of incidental take and to help maintain sustainable populations of birds.

TransCanada will use the regional nesting zones and nesting periods identified by Environment Canada to identify the risk of incidental take of migratory birds in Canada (Figure 5-1). The primary nesting period is the period when 10% or more of the species within a given nesting zone are expected to be breeding, as interpreted from Environment Canada’s nesting calendars (Environment Canada 2014). The primary nesting period is the period of time when risk of incidental take is substantially higher than at other times of the year.

The nesting calendars provide nesting activity for migratory birds for three broad habitat types: wetland, open field, and forest. Primary nesting periods for each nesting zone in Canada, by broad habitat type and consolidated, are provided in Figure 5-2.

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Figure 5-1: Migratory Bird Nesting Zones in Canada

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Figure 5-2: Primary Nesting Periods by Nesting Zones and Broad Habitat Types

Consolidated Primary Wetland Open Field Forest Nesting Nesting Period Zone Start End Start End Start End Start End A1 March 28 July 27 April 9 August 8 April 1 August 7 March 28 August 8 A1a March 29 July 25 April 10 August 10 April 5 August 7 March 29 August 10 A2 April 9 July 27 April 23 August 7 April 12 August 7 April 9 August 7 A3 April 16 July 29 May 2 August 8 May 1 August 7 April 16 August 8 A4 April 25 August 2 May 7 August 8 May 3 August 7 April 25 August 8 A5 April 29 August 2 May 7 August 8 May 3 August 7 April 29 August 8

B3 April 16 July 29 May 2 August 12 April 21 August 12 April 16 August 12 B4 April 26 July 30 May 5 August 15 April 25 August 12 April 26 August 15 B5 May 1 August 2 May 8 August 10 May 3 August 9 May 1 August 10 B6 May 5 August 2 May 10 August 5 May 7 August 7 May 5 August 7 B7 May 12 August 4 May 14 August 7 May 12 August 8 May 12 August 8 B8 May 15 August 7 May 16 August 10 May 15 August 8 May 15 August 10 B9 May 17 August 8 May 22 August 8 May 17 August 9 May 17 August 9

C1 April 3 August 12 April 16 August 11 April 9 August 11 April 3 August 11 C2 April 10 August 12 April 20 August 11 April 15 August 9 April 10 August 9 C3 April 15 August 2 April 25 August 13 April 21 August 11 April 15 August 13 C4 April 21 July 29 April 29 August 14 April 25 August 8 April 21 August 14 C5 April 27 July 29 May 7 August 14 May 1 August 8 April 27 August 14 C6 May 2 August 2 May 8 August 4 May 5 August 7 May 2 August 7 C7 May 7 August 4 May 13 August 2 May 9 August 7 May 7 August 7 C8 May 15 August 6 May 18 August 3 May 15 August 7 May 15 August 7

D3-4 April 20 July 28 May 27 July 29 May 23 August 7 April 20 August 7 D5 April 27 July 30 May 6 August 1 May 1 August 7 April 27 August 7 D6 May 7 August 3 May 15 August 4 May 10 August 7 May 7 August 7 D7 May 12 August 7 May 16 August 5 May 15 August 7 May 12 August 7

N8 May 22 August 7 May 22 August 7 N9 May 22 August 9 May 22 August 9 N10 May 30 August 7 May 30 August 7 Source: Environment Canada 2014

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Potentially destructive or disruptive activities should be scheduled to occur outside of the nesting zone primary nesting period, to the extent practical. However, avoidance of the primary nesting period must be considered in a broader context and balanced with other environmental considerations (e.g., beneficial timing for soil conservation, restricted activity periods for fish and other wildlife species in the Project area, etc.) Examples of where it may not be practical to avoid the primary nesting period include routine maintenance of facilities for safe operation, emergency response, and geophysical, habitat, or climatic constraints related to construction or maintenance activities.

In the event that clearing or construction activities cannot be avoided during the migratory bird nesting period, non-intrusive methods should be used to conduct an area search for evidence of nesting within seven days of activities that are scheduled to occur. The process to be followed in the event that a migratory bird nest search is warranted is outlined in Figure 5-3.

In some circumstances, depending on the intensity of the activity to be conducted and the presence of other mitigating factors (e.g., existing disturbance in the Project area), a non-intrusive nest search completed by a Wildlife Resource Specialist may not be warranted. A decision to modify the nest search requirements will be made by the Environmental Advisor as well as the Project Manager and the determination will be made following a risk assessment considering the intensity of proposed activity, land use, and potential for incidental take.

Outside of the primary nesting period (i.e., when fewer than 10% of species in a nesting zone are breeding), a search for migratory bird nests is generally not required, unless recommended on a Project-specific basis. Any discoveries of active or protected nests will be documented and mitigated through the TransCanada Wildlife Species of Concern Discovery Contingency Plan. A Wildlife Resource Specialist will be consulted for additional guidance as needed.

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Figure 5-3: Breeding Bird Nest Search

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6.0 ACCESS MANAGEMENT PLAN The Access Management Plan (AMP) is intended to work in coordination with the Environmental Protection Plan (EPP) and other management plans in the EPP. Access management planning will occur prior to the Project construction phase with minor adjustments potentially required during construction to address unforeseen site conditions. The specific measures in the plan will typically be completed during the final cleanup stage of the Project construction phase. Should trenchless techniques be prescribed, they will be executed at the appropriate time of the construction phase. This will ensure the intent of the plan is achieved and potential elements such as limited clearing or no clearing and access management are addressed.

Access management is not applicable where it cannot be effective, such as where cleared linear features are constructed adjacent to one another. Placing access management measures on a Project ROW adjacent to pre-existing or maintained industrial clearings or other linear developments that have no measures in place would be ineffective as an access deterrent.

Access management is an established method for minimizing new access to an area. Access management is a requirement and key element of applicable federal and provincial guidelines.

The Environmental Inspector(s) or designate(s) are responsible for ensuring implementation of the plan and compliance with TransCanada’s environmental guidelines and all applicable codes, regulations and industry standards.

6.1 Purpose The purpose of the Access Management Plan is to provide guidance and measures for managing motorized human access for the Project in areas where new or expanded human access has been identified as potentially disruptive to the habitat, behaviour, and populations of wildlife species and pre-existing traditional land use practices. Project construction and associated traffic are relatively short term activities, however long term access to an area can result in enduring effects to the local area as a result of human access.

Access management will be designed to deter human motorized access along the Project rights-of-way, with the objectives of maintaining access levels at or near preconstruction conditions and ensuring effectiveness of individual access management measures.

6.2 Goals and Objectives of the Access Management Plan The goals of the AMP are to:

1. Implement access management measures where applicable to deter an increase in motorized public access: • along new pipeline rights-of-way, • on new temporary construction access, • into existing linear disturbances that intersect the Project ROW;

2. Maintain accessibility necessary for safe pipeline and facility operations and be compliant with applicable regulations and guidelines; and 3. Maintain existing access at locations identified during the Project consultation and planning stage. This includes disturbances and/or dispositions that are or could be utilized by others.

The goals and objectives of the AMP will be achieved by identifying areas that require access management along the Project ROW and temporary construction access, and implementing the appropriate site-specific measures. Emphasis for access management will be placed on areas of intersecting open disturbance (e.g., existing rights-of-way, seismic lines and roads), non-contiguous segments of the pipeline rights-of-way, new temporary construction access and areas sensitive to increased access.

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The access management measures will be monitored as a component of Post-Construction Reclamation Monitoring (PCRM), and adaptive management will occur where appropriate if objectives are not being achieved. The objectives of monitoring access management are to:

1. Determine pre-construction levels of access along the proposed ROW; 2. Determine the effectiveness of access management measures for the Project by evaluating post- construction access levels with pre-construction conditions and previous monitoring; 3. Identify access management measures or locations that are ineffective, and determine contingency measures to supplement or replace measures found to be ineffective.

6.3 Selection of Access Management Measures and Locations A combination of one or more measures selected from Table 6-1 will be implemented to achieve the goals and objectives of access management. Selection of access management locations will focus on areas where the measures have the possibility to be effective. Locations and type of measures for access management will be refined based on factors such as availability of access management measures construction material and storage space.

Potential locations where access management strategies could be implemented will be determined during Project planning and construction and will consider the following:

• segments of the ROW that deviate from paralleling existing linear features (i.e., non-contiguous), temporary access (i.e., shoo-flies) and false rights-of-way used to string pipe at trenchless crossings are priority areas for access management measures;

• intersections of the Project footprint with other linear features (i.e., roads) where trenchless crossing methods may be extended to retain intact vegetation, and where construction access may be limited or where alternate access may be used;

• areas that are accessible to restoration crews and equipment;

• locations where suitable material is available for rollback or berms;

• locations where construction requirements allow and where trees are present along the edge of the ROW, which may be felled over the right-of-way following construction;

• soil characteristics that are conducive to mounding; and

• upland, well-drained sites that are conducive to seedling planting and establishment.

6.3.1 Timber Utilization, Fire and Forest Health The selection of access management measures considers commercial forestry (timber utilization) and fire and forest health values, as woody debris rollback in targeted areas is one of the most practical and widely used techniques for managing access on pipeline rights-of-way.

6.4 Access Management Measures Table 6-1 provides a summary of potential access management measures that may be applied to linear developments, and includes available information on type and implementation specifications. The mitigation type selected will be based on site specific conditions, e.g., the availability of timber or brush for roll-back or slash berms (i.e., may be limited or unavailable in some project areas). Existing site conditions will be taken into consideration during access management planning. A combination of short and long-term measures that can effectively achieve access management goals and objectives can be implemented.

The following table provides a list of access management options which are not Project specific, but may be applicable depending on local site conditions. Site specific opportunities for access management not found in Table 6-1 may be identified during planning and/or construction and will be evaluated on their

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020 merits with respect to access management goals and objectives. The access management measures that are selected to meet the objectives will be applied in consultation with the applicable regulatory authority.

Table 6-1: Potential Access Management Measures

Type of Measure Specifications Comments Minimal surface • Width of grubbing is limited to the trench • The objective is to minimize impacts on disturbance area and where grading is required, and the soils and vegetation substructure, reduces the need for soil salvage over with the goal of allowing the Project wider areas of the footprint footprint to re-vegetate to a similar • In non-frozen ground conditions, and pre-construction condition, subject to where indicated in Project specific land-use guidelines specific to the documentation, minimize disturbance disposition (e.g., limit traffic) beyond the stripped • May be limited to construction during areas prior to pipe handling activities winter conditions, constrained by • Reduces disturbance to vegetation and existing ground topography and to root systems by cutting, mowing or areas where grading isn’t required walking down; mulching stumps, shrubs • In site specific circumstances and and trees that are non-merchantable at conditions, matting may be appropriate ground level (mulch depths maximum for short distances to meet the intent of 5 cm), and limiting traffic to stripped this measure areas. Intact root systems and seed bed • Minimal surface disturbance can facilitate rapid regeneration of construction methods reduce impacts vegetation to soil structure and leads to the rapid • Within riparian areas surrounding regeneration of native vegetation. This watercourse crossings (i.e., designated method aids in achieving the goal of buffer zone), mulching is not permitted access control unless approved by the Company • Beyond the ditchline area, work on top of mulch layer where possible. This is achieved by freezing in mulch and allowing a layer of packed snow or ice to form grade level of ROW, using frost induction techniques (i.e., watering, utilizing snow, dragging tires, snow making) to form a protective layer where travel can be accommodated Snow ramping • Trees and shrubs are walked down • Snow ramping can be combined with using construction equipment and piled some elements of Minimal Surface with layers of snow to create a ramp for Disturbance, with the intent to minimize disturbance to small shrubs and vehicle traffic, if there is enough snow understory, thereby encouraging the cover during winter construction trees and shrubs to recover to a level • Small coniferous trees can also be similar to their original shape and walked down, but only in years when create access control and provide there is a higher than normal snow fall. habitat When the snow melts in the spring • Snow making may be required in site following construction, the trees and specific circumstances to address the intent of this measure shrubs recover their original configuration and create access control Trenchless • Trenchless construction techniques • Extending these types of crossings in construction (e.g., bore) are used to install pipe under some cases may provide opportunities techniques transecting disturbances (e.g., to retain natural vegetation screens watercourses, roads, third party utility that block access between the ROW rights-of-way) and the intersecting disturbance

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Type of Measure Specifications Comments Woody debris • Rollback density should be • Rollback can be effective immediately rollback approximately 200–300 m3/ha. Lengths following implementation, provided of 50 – 100 m have been found to be adequate material is available and sufficient to deter access and will also properly applied (Vinge and Pyper allow space between the debris to 2012). Long rollback segments are facilitate seedling planting. Location and more effective at managing access extent of rollback is subject to availability because ATV riders will be less of appropriate material inclined to try to ride through the debris • Woody debris should be spread evenly or traverse around it in adjacent forest and must extend across the entire stands footprint width (i.e., no gaps between • Placement of woody debris rollback edge of standing timber and tops/ butt of can conserve soil moisture, moderate the placed rollback) at a coverage/ soil temperatures and provide nutrients density that will not restrict the ability to as debris decomposes, prevent soil plant seedlings or limit planted or natural erosion, provide microsites for seed seedling growth germination and protection for planted • Utilization of merchantable quality timber tree seedlings (Pyper and Vinge 2012; requires approval from the applicable Vinge and Pyper 2012) regulatory authority. • Fire risk can be minimized through • The placement of woody debris needs to proper storage and placement of consider risks from a forest fire materials (Pyper and Vinge 2012). A perspective 25 m rollback-free fuel break placed at 250 m intervals along rollback • Rollback can be implemented in isolation segments is recommended by the or in combination with other treatments Integrated Standards and Guidelines (e.g., rollback combined with signs or for the Enhanced Approval Process with revegetation measures such as (AER 2013) seeding or planting) Mounding • Mounding involves the excavation and • In addition to access management, inversion of soil beside the hole, and mounding can create suitable capping with a layer of mineral soil. This microsites for revegetation treatment creates a mosaic of high and low-lying areas • For access management purposes, mounds should be created using an excavator. Excavations are typically 0.75 m deep Berms • Berms may be constructed of slash and • Promote rapid shrub/tree regeneration timbers. Supported berms resemble log at ends of berms (e.g., bio-engineering, fences or walls, constructed using timber seedling planting) to increase cleared from the ROW effectiveness as access management • To be effective, berms should be constructed to an approximate height of 2 m

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Type of Measure Specifications Comments Tree felling • Tree felling is the process of deliberately • Tree felling requires simpler site cutting trees at the margin of a clearing requirements than rollback and less to fall over the linear disturbance. Trees specialized equipment than mounding are felled from both sides of the linear • Tree felling can promote natural disturbance to create access control. It revegetation by increasing cone may be applicable in specific locations deposition onto the ROW, creating where adjacent trees are tall enough to microsites through shading and cover the entire width of the ROW dropped dead woody debris, and protecting planted seedlings from extreme weather, wildlife trampling and damage from access Bio-engineering and • Bio-engineering is the use of live • Species and planting densities used for shrub staking vegetation to stabilize and revegetate a bio-engineering are site dependent site (e.g., transplants; installing cuttings), • Nursery-grown shrub seedlings may be and is a technique often used on slopes planted where staking is not practical or riparian banks due to lack of available material, • Vegetation used for bio-engineering is limitations associated with collecting either found at the site to be treated, or material off-site, or where restoration collected nearby in the form of cuttings prescription calls for shrub planting of • Species are determined based on the species that do not readily regenerate biophysical characteristics of the site, through cuttings/staking (e.g., alder) adjacent forest stand composition, and • Conifer seedling planting is considered restoration objectives (e.g., low an effective access control measure palatability for ungulates) (effectiveness is expected to take • Planting densities depend on several longer than 10 years) factors, including habitat type (upland, riparian, wetland), ecosystem, tree/shrub species and minimum density target • Planting is conducted in non-frozen ground conditions, and in the season following winter final cleanup Transplanting • Transplanting involves moving trans- • Transplanting has the advantage of plantable vegetation (e.g., small trees immediately establishing relatively and shrubs) from off ROW to the ROW large trees/shrubs (e.g., saplings) and as a vegetation access management providing immediate-term access measure management • Transplanting programs often result in the storage of plant materials under less-than-ideal conditions due to seasonal factors (i.e., extreme weather). Other access management options such as seedling planting have been shown to be more successful • Limitations to implementation of transplanting include inconsistent availability of vegetation suitable for transplant, and the potential for degradation of neighbouring vegetation communities if transplants are sourced from adjacent tree stands

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

Type of Measure Specifications Comments Gates and fencing • Gates or fencing can be placed at the • Gates allow access by authorized start of new permanent roads to restrict individuals for operations and unauthorized, motorized access maintenance • Signage may be implemented in • Gates and fencing should be extended conjunction with gates to explain the across the ROW to prevent motorized purpose of access restrictions vehicles from circumnavigating the barrier Signs • Signs may be installed at potential access points to explain why motorized access is being managed in the area, as well as why the restrictions are in place Road deactivation • Road deactivation involves ripping the roadbed, removal of stream crossing structures, recontouring cut and fill slopes and re-establishing native vegetation to entirely eliminate the roadbed • Reclamation of the treated road surface should occur as part of the road deactivation process

6.5 Access Management Measures Monitoring Access management monitoring will be conducted concurrently with PCRM and may be combined with operational or maintenance activities, such as corrosion or leak detection surveys and pipeline surveillance flights, where opportunities exist.

6.5.1 Monitoring Implemented Access Management Measures Aerial overflights and ground surveys are methods that could be used to check the integrity of access management measures, identify evidence of motorized access, and identify changes in land use and new development that may affect access management on the Project ROW. Surveys are intended to provide evidence that a specific access management measure was (or was not) effective. The principle of continual improvement will be used to refine access management in order to see improving access management results.

6.5.2 Reporting Implemented Access Management Measures The access management measures described in this management plan will be monitored and communicated via reporting to applicable regulatory authorities during the post construction reclamation monitoring phase.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

7.0 KEY WILDLIFE AND BIODIVERSITY ZONE PROTECTION PLAN NOVA Gas Transmission Limited (NGTL), an affiliate of TC Energy Limited (TC Energy), applied to the National Energy Board (NEB) under Section 52 of the NEB Act for authorization to construct, own and operate new pipeline facilities in Alberta. These facilities are referred to as the 2021 NGTL System Expansion Project (Project). The Canada Energy Regulator (CER) issued Order XG-001-2020 on 19 February 2020 pursuant to Section 58 of the NEB Act, to permit the construction of certain facilities and activities of the Project. These Section 58 facilities and activities are described in more detail in Section 1.0 of the EPP.

The Section 58 facilities and activities are located on Crown land and will overlap several key wildlife and biodiversity zones (KWBZs) (AEP 2018a) (Figures 7-1 to 7-5).

On Crown lands, the Section 58 facilities and activities will require a Departmental Pipeline Agreement (DPL) from Alberta Environment and Parks (AEP). NGTL has engaged AEP to discuss the Project and potential activities within the KWBZs (Section 7.5). This KWBZ Protection Plan has been developed to support the DPL application by addressing the Section 58 facilities and activities planning, construction, reclamation, and operations activities in the designated KWBZs. Mitigation prescriptions that will be implemented during and after construction in the KWBZs are also summarized (Section 7.4). Updates to the KWBZ Protection Plan will be ongoing as Section 58 facilities and activities planning develops and engagement continues.

NGTL confirms assurance of its commitment to taking responsibility for potential environmental effects of the Section 58 facilities and activities through informed environmental planning, assessment, mitigation, and reclamation. Flexible terms may be included in some mitigation measures in order to provide the flexibility needed during construction to accommodate site-specific or unique situational circumstances where standard mitigation measures must be refined, or non-routine mitigation measures applied as part of the adaptive management process.

7.1 Project Background The Project is required to expand pipeline capacity to transport gas from areas of increasing natural gas production in the Peace River Project Area to intra-Alberta and export markets. The growing natural gas production in the Peace River Project Area includes a shift of production from other areas on the NGTL System to the northwest portion of the NGTL System.

Project Section 58 facilities and activities overlap with existing KWBZs were identified using current wildlife sensitivity layers provided by the Fish and Wildlife Internet Mapping Tool (AEP 2018b). The number of Section 58 facilities and activities that intersect KWBZs are provided in Table 7-1 and presented in Figures 7-1 to 7-4.

Table 7-1: Number of Project Components that Intersect KWBZs

No. of Main Area/Compressor Station/ Pipeline Section Project Components Control Valve that Overlap KWBZ Valhalla 0 Grande Prairie West Area Elmworth 6 Karr 4 Grande Prairie South Area Deep Valley 3 Robb 0 Edson South Area Dismal Creek 0 Brewster 0 Nordegg Compressor Station Unit Addition – 0 Didsbury Compressor Station Unit Addition – 0 Beiseker Compressor Station Unit Addition – 0 January Creek Control Valve – 0 Total 13

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R8 W 6

Grande Prairie

Edmonton 0 0 0 4 0 1 6

Calgary

T70 0 0 0 2 0 1 6 M A

2 3 : 1 3 : 1 1

1 2 - 7 0 - 0 2

n o s l i w . m i k

: T S Y L

A Key W ildlife a nd Biodiversity Zone N A

Open W a ter d x W a tercourse m . V O

Highwa y Z B Roa d W K

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_ Sta ging Area 3 \ g n i l Sta ging Area 4 i F t s Sta ging Area 6 o P _

\ Sta ging Area 6 Access S I G c r A

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T QA/QC: KW CF JB T69

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0 Alb erta , Ca na da . 2

_ - Route Rev. 6 (Octob er 1, 2019) 3 1

8 4 0

\ 362000 364000 366000 y g r e n E

C 250 0 250 T \ E C \ s Section 58 Facilities and Activities t Metres c e j 1:25,000 o r Key Wildlife Biodiversity Zones Overview P

\ 2021 NGTL s i July G \ : System Expansion Project Elmworth Section Figure 7-1

S 2020 R5 R4 W 6

Grande Prairie

T68

Edmonton

Calgary 6078000

T67 6076000

KeyWildlife and Biodiversity Zone OpenWa ter W a tercourse Road ExistingPipeline 2021 NGTL Expansion Project ComAdditionStationUnit pressor Control VaControl lve Pipeline Section 58 Activity AccessSm to okyRiver HDD SiteEntry AccessSm to okyRiver HDD SiteAccessEntry AccessSm to okyRiver HDD ExitSite AccessSm to okyRiver HDD ExitSiteAccess

Projection NAD UTM1983: Zone 11N QA/QC KW CF: JB Sources ABCadaTPR,Centre for : Ma stral nagemGeom ent, aCanada tics . - Contains informa- licensed tion under theOpen Governm licence ent – Alberta,Canada . - Route 2019)Rev.(October 6 - 1, 396000 398000

250 0 250

Section 58 Facilities and Activities Metres 1:25,000 2021 NGTL Key Wildlife Biodiversity Zones Overview July System Expansion Project Karr Section Figure7-2

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Grande

6034000 Prairie

Edmonton

Calgary

T63 6032000 6030000

KeyWildlife an dBiodiversity Zone O penWa ter W a tercourse Road ExistingPipeline 2021 NGTL Expansion Project CompressorStation UnitAddition T62 ControlValve Pipeline Section 58 Activity SiteG

Projec tion NAD UTM1983 : Zone 11N QA/QC KW CF: JB Sources ABTPR,Cen Cada : for tre Man stral a gemGeoma en t, Can tics a da . - Contains - informa licen tion sedunder theOpen Governm enlicen t c e– Alberta,Can a da . - RouteRev.(Oc2019) 6 1, tober- 432000 434000

250 0 250

Section 58 Facilities and Activities Metres 1:25,000 2021 NGTL Key Wildlife Biodiversity Zones Overview July System Expansion Project Deep Valley Section Figure7-3

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Grande Prairie T59

Edmonton

5990000 Calgary

T58 5988000

KeyWildlife an dBiodiversity Zone O penWa ter W a tercourse Road ExistingPipeline 2021 NGTL Expansion Project CompressorStation UnitAddition ControlValve Pipeline Section 58 Activity DeepValley SouthStaging Area

5986000 DeepValley SouthStaging Area Acc ess

Projec tion NAD UTM1983 : Zone 11N QA/QC KW CF: JB Sources ABTPR,Cen Cada : for tre Man stral a gemGeoma en t, Can tics a da . - Contains - informa licen tion sedunder theOpen Governm enlicen t c e– Alberta,Can a da . - RouteRev.(Oc2019) 6 1, tober- 470000 472000 474000

250 0 250

Section 58 Facilities and Activities Metres 1:25,000 2021 NGTL Key Wildlife Biodiversity Zones Overview July System Expansion Project Deep Valley Section Figure7-4

S:\Gis\Projec ts\CE\TCEnergy\04813_2021NGTL\ArcGIS\_PostFiling\_Sec tion58\OverviewFigures\Fig 7-4 KW BZ OV.mxd ANALYST: kim.wilson 20-07-08 7:06:37 AM 7:06:37 20-07-08 kim.wilson ANALYST: OV.mxd KW BZ 7-4 tion58\OverviewFigures\Fig ts\CE\TCEnergy\04813_2021NGTL\ArcGIS\_PostFiling\_Sec S:\Gis\Projec 2020 NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

The total Project Footprint for Section 58 facilities and activities within KWBZs is approximately 21 ha, including temporary workspace (TWS). All Section 58 facilities and activities footprints will be outlined within the Section 58 facilities and activities’ DPL survey plans and will be discussed with AEP.

No new permanent access is anticipated for the Section 58 facilities and activities. Access to the Section 58 facilities and activities will primarily be from existing access points and ROWs, where safe to do so and permission is granted. Where existing access is not sufficient or available, access may be improved along existing roads or trails where necessary during construction by widening, matting, regrading or by other means.

Construction activities for the Section 58 facilities and activities are expected to begin Q3 2020, prior to pipeline construction. Construction activities for the pipeline sections are expected to begin in Q4 2020 (clearing, access development, grading, horizontal directional drillings [HDDs], mainline pipe installation) with an anticipated in-service date of April 2021. Table 7-2 presents a high-level Project schedule. As construction plans are developed for the Project, the table will be updated to include the planned timing of pipeline construction components within KWBZs (e.g., access and site preparation, pipe stringing and welding, etc.).

Table 7-2: Preliminary Project Schedule

Activity Planned Start Planned End Preliminary Project Planning Q3 2017 Q1 2018 Engagement Activities Q3 2017 ongoing Environmental and Engineering Fieldwork Q3 2017 Q4 2019 Federal Regulatory Review Process Q2 2018 Q3 2020 Provincial Regulatory Application Process Q1 2019 Q3 2020 Detailed Engineering and Construction Planning Q4 2018 Q3 2020 Early Works and Pipeline Construction Q3 2020 Q1 2021 Commissioning Q1 2021 April 2021

7.2 Key Wildlife And Biodiversity Zone Guidelines AEP, working with the Alberta Energy Regulator, has consolidated and clarified numerous guidelines and conditions in support of balancing environmental stewardship with prudent development of natural resources in Alberta. The result is the Master Schedule of Standards and Conditions (AEP 2018b). As outlined in the Master Schedule of Standards and Conditions (MSSC), disposition applicants must ensure the following:

• Desired outcomes are met in all application submissions.

The MSSC (GOA 2018) outline the following desired outcomes for Key Wildlife and Biodiversity Areas: 1. Protect the integrity of ungulate winter ranges, river corridors, and biodiversity areas where species tend to concentrate. 2. Protect locally and regionally-significant wildlife movement corridors. 3. Protect areas with rich habitat diversity and regionally-significant habitat types and habitat diversity. 4. Protect hiding and thermal cover. 5. Protect the complex biological structure and processes of identified riparian areas. 6. Reduce excessive mortality of wildlife from all sources. 7. Protect ungulate energy reserves, body condition and reproductive potential.

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• Applicant is responsible for ensuring desired outcomes can still be achieved within the proposed mitigation. If the desired outcomes are not addressed, proposed mitigation may not be sound, and application may be refused.

• Best Management Practices (BMPs) are followed in the planning and siting of the proposed activity.

NGTL will meet desired outcomes for the KWBZs through the application of relevant mitigation measures, outlined within this document as well as the Project’s Environmental Protection Plan (EPP) and Environmental Alignment Sheets. Sections 7.2.1 to 7.2.2 detail how NGTL’s mitigation measures will achieve the desired outcomes and demonstrate how BMPs are followed in the planning and siting of the Section 58 facilities and activities.

7.2.1 Desired Outcomes for Key Wildlife and Biodiversity Zones A primary strategy for achieving all desired outcomes for KWBZs identified in the MSSC is to avoid or minimize clearing and activities. NGTL has minimized the amount of area required for Project construction and operations within KWBZs by paralleling existing NGTL ROW and other existing linear disturbances. This allows the potential for existing ROWs to be utilized for access and TWS, reducing the overall footprint and disturbance of the Section 58 facilities and activities.

Reducing or avoiding the amount of new access also supports the MSSC’s desired outcomes for KWBZs. Access management is further discussed in Section 7.2.1 below.

Through the above measures, NGTL has minimized and avoided clearing and limited activities within the KWBZs. Standard industry practices and avoidance measures, along with Project-specific mitigation measures (outlined in the Section 58 facilities and activities EPPs and summarized in this Plan) will be implemented during construction in order to meet desired outcomes.

7.2.2 Best Management Practices The MSSC (GOA 2018) also provides BMPs that are applicable to pipeline projects outlined below:

• Applicants should plan the access option that uses existing temporary access or to strive to access resources from outside the zone (e.g., directional drill, remote production); • Oil and gas wells should be remotely operated and well sites should have sufficient resources (e.g., methanol tanks) on-site to allow for reduce site visits; • effective public access control is desirable along all Class IV or V access roads; • long-term and permanent access routes should not be developed below the valley ‘breaks’ of rivers, except in isolated cases for river crossings; and • reforestation should occur within two years of pipeline construction and should match the adjacent forest type across the entire width of the pipeline cover, with the exception of 1.5 m on each side of the trenchline (note: tree planting densities should be consistent with the Timber Supply Analysis for the area). Reforestation should occur using an ILM approach.

NGTL’s approach to applicable BMPs, with the overall purpose of achieving the desired outcomes, are described in the following sections.

Access Management Two of the BMPs that are outlined in the MSSC (GOA 2018) refer to access management. During construction of the Project, primary access to the ROW will be by existing public and privately owned roads, shoo-flies and ROWs. No new permanent access roads (winter or all-weather) will be constructed as part of the Project.

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NGTL will review any additional access requested by the construction contractor prior to use. NGTL will ensure the selected pipeline construction contractor develops and implements a suitable traffic and access management plan with the goal of preventing unauthorized access to the ROW and related access points during construction.

With regards to access management following construction, the Project is parallel to other ROWs, including third party pipelines, and utilizes NGTL's existing ROWs. Access control will not be installed in areas where the route is parallel to an existing disturbance.

Reclamation Timing NGTL recognizes expedient reclamation is needed post-construction within KWBZs. To reduce the need for soil salvage and, therefore, reduce adverse effects on soils, vegetation and wetlands, minimal surface disturbance techniques will be employed under frozen conditions. Under non-frozen conditions, where grading is not required and conditions are soft, rig mats, swamp mats, geotechnical mats, or access mats may be installed to allow access for clearing and site preparations. These mitigations will reduce the disturbance to the root zone and seedbed and as a result, intact roots and seedbed will rapidly revegetate following construction. Where grading is necessary, NGTL conserves the surficial material which is replaced during construction clean-up. Research has shown that conserving forest floor materials accelerates natural revegetation (de Grosbois et al. 1991; Mackenzie and Naeth 2010; van Rensen et al. 2015).

Following construction, NGTL will complete detailed post-construction monitoring, and will use adaptive management to ensure reclamation goals are met. Post-construction monitoring will include evaluation of vegetation species composition, density and identification of noxious or prohibited noxious weed species.

7.3 Approval Standards and Conditions The MSSC (GOA 2018) includes conditions that can further be broken down into two categories: approval standards and conditions. Using the Landscape Analysis Tool (LAT), NGTL generated a list of applicable approval standards and conditions for the Project. Prior to filing DPL applications with AEP, NGTL discussed with AEP proposed non-standard mitigations for the Project, including those applicable to the KWBZs. Feedback from AEP was considered and used to refine non-standard mitigations as well as Project planning.

Table 7-3: Project Specific Non-standard Mitigation for KWBZ

Number AEP Approval Standard and Conditions NGTL’s Response 1880-AS Between January 15 and April 30, the It is NGTL’s intent to meet this AS; however, it is Disposition Holder must not conduct any unlikely that all construction activities will be activities for all areas North of Highway completed within the timeframe. (HWY) #1 with the following exceptions As the Project traverses Key Wildlife and under favourable (non-adverse) ground Biodiversity Zones, a Project specific KWBZ Plan conditions: has been developed. Project planning includes a) Well tie-in activities, within 1.6 km radius schedule, construction activities and specific of the wellsite which can be initiated and mitigations as well as input from regulatory wildlife completed while ground conditions are specialists and wildlife resource consultants. favourable; Project planning will focus on avoiding the KWBZ b) All wellsite or pipeline installations restricted activity period, however due to short accessed using Class IV or V roads; winter construction windows in winter-access only and areas, not all activities can be scheduled outside the RAP. When activities carry into the RAP, c) Portions of the activities occurring within regulatory bodies will be consulted in advance and 100 m of existing arterial all-weather updated regularly. roads can be initiated at any time provided ground conditions are When construction activities continue into the favourable and may continue until KWBZ restricted activity period, the Disposition adverse ground conditions are Holder will work with Regulatory specialists to encountered. confirm altered construction schedule and activities and determine additional mitigation through the Project specific KWBZ Plan.

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NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

7.4 Project Protection Measures To mitigate potential effects on vegetation communities, including vegetation species, and on wildlife and wildlife habitat from the Project Section 58 facilities and activities, NGTL will employ the mitigations outlined in Table 7-4 within the KWBZs during the construction, reclamation and operations phases of the Section 58 facilities and activities. The following mitigations are included within the Project’s EPPs.

Table 7-4: Project Protection Measures1 Activity/Concern Mitigation Measures Project Training and 1. Develop and implement an environmental orientation program Orientation to ensure that all personnel working on the construction of the Project are informed of the environmental requirements and sensitivities. 2. The Environmental Inspector(s) will be briefed by the Environmental Advisor on the environmentally sensitive aspects of the Project, and the environmental processes and agreements that have taken place to date. 3. The Environmental Inspector(s) will ensure the environmental orientation program is presented to the Contractor and all Project construction personnel. 4. Environmental Inspector(s) will be hired before the commencement of construction with sufficient lead time to enable training and participation in the orientation of other construction personnel, as well as sufficient on site time to facilitate review of environmentally sensitive aspects of the Project. 5. The Environmental Inspector(s) will review all Project-related information. Environmental Resource 6. Prior to the start of clearing, clearly mark all sensitive Delineation resources as identified on the Environmental Protection Plan and/or other Project-specific documents and in the site-specific mitigation tables. 7. The Environmental Inspector(s) will identify and notify the Contractor of the appropriate locations for wildlife gaps. Equipment Cleaning 8. All equipment, including mats, must be clean and free of soil or vegetative debris prior to use on site. 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 to perform any work until it has been cleaned, re-inspected by the Environmental Inspector(s) or designate(s), and deemed suitable for use.

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Activity/Concern Mitigation Measures Equipment Cleaning 9. Prior to equipment arriving at any watercourse or waterbody (cont’d) site, the Contractor shall provide to the Company the cleaning procedure(s) utilized for all equipment (e.g., pumps, hoses, tanks, hydrovac trucks, water trucks, bridges) to be used in or adjacent to the watercourses or waterbodies. Procedures must meet the Alberta Level 1 Decontamination Protocol (Clean, Drain, Dry), or provincial equivalent, and documented proof of cleanliness is required. Prior to equipment being used in or adjacent to any watercourse or waterbody site, the Contractor shall conduct inspections for signs of dirt, debris and contamination. Prior to equipment being used in or adjacent to any watercourse or waterbody site, the Environmental Inspector(s) or designate(s) working on behalf of the Company shall receive and review all Contractor-supplied cleaning procedures and documented proofs of cleanliness. The Environmental Inspector(s) or designate(s) will confirm equipment cleaning procedures meet, at a minimum, the Alberta Level 1 Decontamination Protocol (Clean, Drain, Dry), or provincial equivalent, prior to use on site, and conduct on- site visual inspections of equipment and document the results of their inspections in their daily report(s). 10. To minimize the potential for transporting clubroot to the construction footprint, following thorough cleaning to remove all soil and vegetative debris, all equipment including mats, shall be sanitized by misting with a weak disinfectant solution (i.e., 1 to 2% bleach), prior to its arrival on the Project, unless otherwise directed by the Environmental Inspector(s) or designate(s). Weeds 11. Apply mitigations for locations identified as having listed weed infestations according to applicable regulatory requirements, as identified in the Project-Specific Mitigation Measures Table (Table 1). 12. Salvage and store topsoil/strippings separately where listed weed infestations are identified on the Environmental Alignment Sheets, Environmental Figures and/or other Project-specific environmental documents. 13. 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. 14. 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.

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Activity/Concern Mitigation Measures Weeds 15. Unless a certificate of weed analysis can be provided, all (cont’d) 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. 16. Where straw is required, it will be sourced from the Project area to the extent feasible. Should local sources not be available, approval from the landowner and responsible regulatory agency, where required, will be secured prior to importing from outside of the Project area. Potential source locations will be inspected to the extent practical for listed weeds. Prior to securing straw from any source (other than from the landowner supplied straw) provisions will be taken (assessment of field(s), and/or straw testing from an independent lab for weed analysis) to prevent the introduction or spread of listed weeds. 17. Use of herbicides on the construction footprint is prohibited unless otherwise approved by the Company. 18. Prohibit the general application of herbicide near rare plants or rare ecological communities. Spot spraying, wicking, mowing, or hand-picking are acceptable measures for weed control in these areas. 19. Prohibit the use of herbicides within 30m of an open body of water, unless the herbicide application is conducted by ground application equipment, or otherwise approved by the responsible regulatory agency. Access 20. Clearly delineate areas that have access restrictions. Restrict access to construction personnel only. 21. Restrict all construction activities to the approved construction footprint. All construction traffic will adhere to safety and road closure regulations. 22. Where practical and applicable, use multi-passenger vehicles for the transport of crews to and from job sites. 23. Use geotechnical matting, rig mats, swamp mats or access mats for access through wet areas. 24. Use low ground pressure equipment and vehicles to access KWBZs, where appropriate (e.g., nodwell or hagglunds). 25. If wet/thawed soil conditions occur, implement the Wet Soil Contingency Plan (EPP, Appendix A). Wildlife 26. Leave gaps in windrows (e.g., topsoil/strippings, grade spoil, ditch 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. Locations where wildlife gaps are appropriate will be determined in the field by the Environmental Inspector(s). Gaps should align.

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Activity/Concern Mitigation Measures Wildlife 27. Unanticipated wildlife issues encountered during construction (cont’d) will be discussed and resolved by the Environmental Inspector(s), Wildlife Resource Specialist(s), and the responsible regulatory agencies, if necessary. 28. If wildlife or livestock are discovered in the trench, or in association with any other activity or facility, report to the Environmental Inspector(s) who will contact the responsible regulatory agencies, as required. In the case of livestock, the land agent assigned to the Project will contact the landowner. 29. Project personnel are not permitted to hunt or fish on the construction footprint. 30. 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 (ATVs) or snowmobiles by construction personnel on the construction footprint. Report any incidents with wildlife to an NGTL Representative immediately. Listed or Sensitive Wildlife 31. If previously unidentified listed or sensitive wildlife species or Species their site-specific habitat e.g., dens, nests are identified during construction of the Project, report to the Environmental Inspector(s) and implement the Wildlife Species of Concern Discovery Contingency Plan (Appendix 1E). 32. Report sightings of Project-specific species of interest to the Environmental Inspector(s). Specific protection measures may be implemented and the sighting will be recorded. Noise 33. Ensure that noise abatement equipment on machinery is in good working order. Take reasonable measures to control construction related noise near residential areas. Clearing and Grubbing 34. Vegetation clearing will be limited to daylight hours (i.e., ~12 hours per day), where practical, to reduce sensory effects and allow wildlife movement across the Project footprint. 35. Avoid disturbance to environmentally sensitive features during clearing as identified by the appropriate signage and/or fencing. The Environmental Inspector(s) and/or appropriate Environmental Resource Specialist will determine the size of avoidance buffer surrounding these features, if appropriate. 36. Where practical, leave stumps in place, particularly on streambanks, to provide surface stability. Stumps that are removed will be used as rollback or will be disposed of by burning or chipping, where approved. 37. Conduct grubbing only where stripping and grading is required. 38. Grub tree roots, where required, with a hoe and thumb or alternate equipment to preserve surface organic material. 39. Reduce grubbing near watercourses, muskeg, and other wet areas to facilitate the reclamation of shrub communities.

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Activity/Concern Mitigation Measures Clearing and Grubbing 40. Use a stump mulcher rather than grubbing on areas where (cont’d) stripping and grading is not necessary. 41. If previously unidentified rare plants or rare ecological communities are found on the construction footprint during construction, implement the Plant Species and Ecological Communities of Concern Discovery Contingency Plan (EPP, Appendix A). If wet/thawed soil conditions occur, implement the Wet Soil Contingency Plan (EPP, Appendix A). Grading 42. The Contractor shall provide a grade plan for approval, as specified in the contract documents. The grade plan will be reviewed by the Environmental Inspector(s) to ensure identified environmental resources are not impacted as a result of grading activities. Trenching 43. To facilitate free movement of livestock and wildlife, follow trenching operations as closely as possible with lowering-in and backfill operations, unless for construction purposes there is a need to have the trench open for an extended period of time. 44. Minimize the amount of open trench at any one time. 45. The Contractor will monitor the open trench for trapped wildlife. Should any wildlife be identified, the Contractor will contact the Environmental Inspector(s) and Construction Manager. The Environmental Inspector(s) will contact the responsible regulatory agency or a Wildlife Resource Specialist, where required, for direction. Clean-up 46. Remove all matting and non-biodegradable geotextile from all locations on the construction footprint following clean-up, once site conditions are deemed stable. 47. The Contractor will collect all construction debris and other waste materials and dispose of daily at an approved facility and in accordance with the Chemical and Waste Management Plan and the Release Contingency Plan (EPP, Appendix A). 48. Remove all flagging and signage from the Project area and dispose of it appropriately following the completion of construction. 49. Remove bar ditch ramps and reclaim all temporary access trails and shoo-flies to stable conditions. Re-contour to preconstruction conditions and seed accordingly. 50. Remove all mats and ramps used so that they do not impede the restoration of natural drainage patterns. 51. Remove all temporary vehicle crossing structures. Ensure that removal of access does not disturb the bed or banks at the crossing. 52. Remove all temporary vehicle crossing structures, prior to spring break-up. Remove or breach snow or ice bridges to ensure they do not impede flow.

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Activity/Concern Mitigation Measures Reclamation 53. Use a cover crop to assist in weed and erosion control where warranted, or where requested by the landowner. 54. Individual seed components shall not be used or blended to specified mixes until approval is provided by the Company. 55. Seeding will follow as close as possible to final clean-up and topsoil/surface material replacement pending seasonal or weather conditions. 56. Unless a certificate of weed analysis can be 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 noxious weeds to the extent possible. If sources are suspected as having noxious 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 Construction site. 57. Certificates of Analysis for all components of seed mixes and cover crops shall be reviewed by the Company. Individual seed components shall not be used or blended to specified mixes until approval is provided by the Company. 58. On Crown land allow for natural regeneration, or seed as directed by the responsible Land Administrator. Natural recovery is the preferred method of reclamation in non- agricultural areas on level terrain where erosion is not expected. 59. Use only Certified No. 1 seed, unless Certified No. 1 is not available for select reclamation seed species (i.e., native species). 60. 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. 61. Restrict vehicle access over newly seeded areas. 62. Implement Post Construction Monitoring and treat weed infestation on the construction footprint as needed.

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7.5 Consultation NGTL has consulted and will continue to consult with the relevant provincial regulatory agency (AEP) regarding this Plan. Table 7-5 outlines current relevant consultation efforts and will be updated as consultation continues.

Table 7-5: Applicable Regulatory Consultation

Date Comment Outcome May 1, 2018 Meeting, NGTL discussed the Project’s proximity AEP (Brent Bochon) commented that the AEP Grande Prairie to KWBZ EW-3, associated with the lands within the KWBZ area are all Freehold Office Wapiti River private and cultivated; therefore, no concerns or requirement for KWBZ protection plan submission associated with this KWBZ. November 18, 2019, Conditions and alternate mitigations for It is NGTL’s intent to meet KWBZ timing AEP Land Officer the Project were reviewed with the Land constraints; however, it is unlikely that all Team Meeting Officer team for guidance on non-routine construction activities will be completed mitigations or acceptance. within the timeframe. When activities carry into the RAP, regulatory bodies will be consulted in advance and updated regularly.

7.6 References Alberta Environment and Parks (AEP). 2018a. Wildlife Sensitivity Data Sets. Available at https://www.alberta.ca/wildlife-sensitivity-maps.aspx Accessed March 2020.

Alberta Environment and Parks (AEP). 2018b. Master Schedule of Standards and Conditions. Available at: https://open.alberta.ca Accessed March 2020.

Alberta Environment and Parks (AEP). 2018. Fisheries and Wildlife Management Information System (FWMIS) – Internet Mapping System. Available at: https://maps.alberta.ca/FWIMT_Pub/Viewer/ ?TermsOfUseRequired=true&Viewer=FWIMT_Pub.

De Grosbois T., G.P. Kershaw and J.R. Eyton. 1991. The Regrowth Production and Allocation of Salix arbusculoides in Three Growing Seasons Following Right-of-Way Clearing. Canadian Journal of Forest Research 21: 1171-1179.

Mackenzie, D.D. and M.A. Naeth. 2010. The Role of The Forest Soil Propagule Bank in Assisted Natural Recovery after Oil Sands Mining. Restoration Ecology, 18(4), 418-427. van Rensen, C.K., S.E. Nielsen, B. White, T. Vinge, and V.J. Lieffers. 2015. Natural Regeneration of Forest Vegetation on Legacy Seismic Lines in Boreal Habitats in Alberta’s Oil Sands Region. Biological Conservation 184: 127-135.

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8.0 AMPHIBIAN MANAGEMENT PLAN This Amphibian Management Plan (the Plan) for upland hibernators, such as the Western toad, provides technical guidance and field techniques to implement mitigation identified in the environmental protection plan (EPP) updates for new pipeline segments. In consultation with the Environmental Inspector (EI), the Wildlife Resource Specialist is responsible for determining the most effective mitigation design for a site and completing all monitoring and relocations of amphibians. The contractor is responsible for installing all fencing under the direction of the EI or Wildlife Resource Specialist. The contractor will also facilitate mitigation by delaying daily equipment activities to allow time for monitoring and area searches and any relocations required by the Wildlife Resource Specialist.

Appropriate provincial and federal animal handling permits for the jurisdiction must be obtained prior to the initiation of mitigation efforts.

8.1 Purpose The purpose of this plan is to reduce mortality of amphibian species of management concern (SOMC) by removing or preventing them from entering the Construction Footprint prior to construction and on a daily basis through construction.

Amphibian species at risk (SAR) and SOMC are defined in Sections 11 and 12 of the ESA as well as below in Section 1.2.1. The applied mitigation for amphibian SOMC depends on how and where the species hibernates (i.e., in the surrounding upland or in wetlands) and season of construction. Winter construction is preferred as it avoids the need for exclusion fencing and relocations.

8.2 Definitions

8.2.1 Species of Management Concern For the purpose of this plan, amphibian SAR are:

• listed under Schedule 1, Schedule 2 or Schedule 3 of the federal Species at Risk Act (SARA) as endangered, threatened or of special concern (Government of Canada 2018); or • listed by provincial legislation as: • endangered or threatened under the Alberta Wildlife Act

SOMC include all SAR as well as amphibian species that are:

• listed by the Committee on the Status of Endangered Wildlife in Canada as endangered, threatened or of special concern (COSEWIC 2017) • recognized in any federal species management or guidance documents (Environment Canada 2009) • listed by the Alberta Endangered Species Conservation Committee (AESCC 2016) as special concern • listed by the General Status of Alberta Wild Species (AEP 2017) as at risk, may be at risk or sensitive

8.2.2 Timing Windows and Setbacks Table 8-1 presents information on amphibian SOMC active periods and associated restricted activity periods (RAPs) and setback distances that apply. Note that the RAP for upland hibernator species focuses on the period when these species are active on the landscape and does not include the hibernation period due to the variety of habitat used and difficulty in detecting hibernation sites for upland hibernator species.

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Table 8-1: Amphibian Species of Management Concern

Restricted Setback Species Province(s) Active Season1 Activity Period2 Distance,,3,4,5 Upland hibernators Western toad AB April 1 to September 30 Year-round4,5 100 – 4005 m Western tiger salamander AB April 1 to September 30 Year-round4,5 100 m Wetland hibernators Northern leopard frog6 AB April 1 to September 30 Year-round 4,5 100 – 4005 m 1 Includes the breeding period (April to end of June 30) and when amphibians are active on the landscape 2 Restricted activity periods only apply to breeding wetlands for both upland and wetland hibernators. Does not apply to upland hibernation sites for species such as western toad, see Section 8.3 for an explanation. Although the waterbody has a year-round restriction, mitigations (as described below) are only required in the active season. 3 Setback distances are to breeding locations and represent a combination of setbacks for applicable provinces. Project-specific setbacks will be discussed during regulatory consultation 4 Government of Alberta 2017 5 Environment Canada 2009 6 Northern Leopard frog – not found during 2018 field surveys and have limited range relative to the Project location and have a low probability of occurrence

8.3 Mitigation Measures The recommended mitigation measures apply only to wetlands and water bodies where amphibian SOMC have been identified for the Project. Specific resource protection measures for amphibian breeding wetlands and water bodies are marked on the environmental alignment sheets (EAS) and are provided in Table 1 of the EPP.

Amphibian mitigation measures for the Project take into consideration seasonal timing of construction, as well as the type of wetland (i.e., ephemeral or temporary wetlands vs. open water wetlands) where breeding activities may take place and the amphibian species is present. For the purposes of the mitigation presented below, the focus is primarily on breeding wetlands as these can be more effectively determined, as opposed to overwintering habitat. Overwintering habitat for western toad (see Table 8-1), is variable, more opportunistic, and can be very difficult to determine. Western toad hibernation in the boreal forest is highly variable with hibernating individuals recorded in burn areas and coniferous forest with use of squirrel middens and decayed route channels (Brown and Paszkowski 2010). Western toads disperse widely from breeding areas to overwintering habitats and are found in low numbers and it a variety of habitats (Brown and Paszkowski, 2010). Brown and Paszkowski (2010) noted western toad movements in boreal forest environment in excess of 1900 m from breeding wetlands, while Davis (2000) noted western toad movements from breeding sites up to 7 km. Mitigation therefore focuses on breeding wetlands during the active season.

Mitigation measures are focused on:

• Construction activities overlapping the amphibian SOMC active season (April 1 to September 30; non- frozen conditions) where there are identified amphibian SOMC breeding wetlands intersecting the Construction Footprint. The amphibian active season of April 1 to September 30 can be seasonally adjusted based on expertise of the Wildlife Resource Specialist

For breeding wetlands within 100 m of but not intersecting the construction footprint, if there are incidental observations of amphibian SOMC as a result of monitoring for amphibians, then the Wildlife Species of Concern Discovery Contingency Plan will be implemented (see Appendix 1E).

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8.3.1 Upland Hibernator Mitigation

Activity/Concern Mitigation Measures Pre-construction 1. If construction activities are scheduled to occur within the active Confirmatory Sweeps season, a Wildlife Resource Specialist will conduct pre-construction sweeps to confirm presence or absence of amphibian SOMC, at previously identified amphibian breeding wetlands or water bodies marked on the EAS, and confirm wetland boundaries and setback boundaries where mitigation will be applied.

Project Planning and 2. Limit or modify activities within 100 m of identified amphibian breeding Routing wetlands and water bodies, and where possible, maintain this setback year-round to protect dormant amphibian species during dry or frozen conditions.

Amphibian Breeding If an amphibian SOMC breeding wetland is intersected by the construction Wetlands intersected by footprint the following mitigation measures will be implemented if the Construction Footprint construction is scheduled to occur within the active season (see Table 8.1): Construction planned 3. For amphibian SOMC breeding wetlands intersected by the during non-frozen ground construction footprint, install exclusion fencing along both edge(s) of conditions the construction footprint within the wetland zone (if feasible) and the (amphibian active 100 m setback distance. Where not feasible, conduct area searches season; April1 to September 30, or as and relocate amphibians away from the construction footprint (at seasonally adjusted by a appropriate distances and locations as determined by the wildlife wildlife resource resource specialist). specialist) 4. If the wetland is dry (e.g., it is an ephemeral or temporary wetland), install exclusion fencing through the wetland zone. Otherwise, place exclusion fencing up to the edge of the water. 5. Extent of fencing and the need for additional mitigation measures (e.g., artificial cover or crossing features) will be determined by Wildlife Resource Specialist in conjunction with the Company and Environmental Inspector(s). 6. The contractor will install the appropriate signage within the setback distance, in consultation with the Wildlife Resource Specialist. 7. For breeding wetlands with open water intersected by the construction footprint, install exclusion fencing around margin of open water section. 8. Conduct regular area searches of the fenced construction footprint (including the open trench) and remove amphibians encountered within the exclusion area and relocate to a suitable wetland or upland area (at appropriate distances and locations as determined by the wildlife resource specialist). 9. The Wildlife Resource Specialist in consultation with the EI determine the need for additional mitigation such as artificial ramps or soft plugs with backsloping so amphibians can be effectively removed from the open trench 10. Exclusion fencing will remain in place until the start of hibernation; however, monitoring will cease once environmental conditions (i.e., temperatures) are conducive for hibernation to commence.

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Activity/Concern Mitigation Measures Construction planned 11. If isolation methods are used for crossing open water wetlands or during non-frozen ground drawing down wetlands to allow for pipe installation, a Wildlife conditions Resource Specialist will be present to relocate amphibians during any (amphibian active water drawdown and to install exclusion fencing along the edge(s) of season; April1 to September 30, or as the drawdown location. seasonally adjusted by a 12. Relocation of amphibians will be to suitable wetland or upland areas. wildlife resource specialist) (cont’d)

Amphibian Breeding In the event that amphibian SOMC breeding wetlands are encountered Wetlands within 100 m within 100 m but not intersecting the construction footprint, the following but not intersecting the mitigation measures will be implemented if construction is scheduled to Construction Footprint occur within the active season (see Table 8.1): Construction planned 13. Monitor for the presence of amphibians when working within setback during non-frozen ground distance to ensure no amphibians are trapped within construction conditions footprint or open trench. (amphibian active 14. Conduct regular area searches and relocate amphibians away from season; April1 to September 30, or as the construction footprint (at appropriate distances and locations as seasonally adjusted by a determined by the wildlife resource specialist). wildlife resource 15. The Wildlife Resource Specialist in consultation with the EI determine specialist) the need for additional mitigation such as artificial ramps or soft plugs with backsloping so amphibians can be effectively removed from the open trench. 16. The contractor will install the appropriate signage within the setback distance, in consultation with the Wildlife Resource Specialist. 17. Monitoring will cease once environmental conditions (i.e., temperatures) are conducive for hibernation to commence.

Exclusion Fencing For the installation and maintenance of exclusion fencing, the following will be considered: 18. Exclusion fencing will be keyed into the soil or pinned down. If pinned down, soil or sandbags or other suitable material should be used to eliminate any pockets or areas that can trap small amphibians between the geotextile and the ground. Each end of the exclusion fence shall be installed with a J-hook, designed to curve towards the habitat area and to redirect animals away from the exclusion area. 19. Fencing will be installed to prevent holes under the fence or from becoming loose. The exclusion fence will be inspected during the duration of construction and repaired, as necessary. 20. Where necessary, gaps between the fence and the ground can be filled by placing sandbags or soil on top of the bottom edge (flap) of the fence.

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8.4 Regional Considerations and Permits

8.4.1 Alberta Preconstruction amphibian surveys will follow the Alberta Sensitive Species Inventory Guidelines (ESRD 2013). Amphibian relocations will require a Wildlife Research Permit and Collection Licence from Alberta Environment and Parks, and the safe capture and handling of amphibians will be in accordance with the Alberta Wildlife Animal Care Committee Class Protocol #003 – Capture and Handling of Amphibians (ESRD 2012).

8.5 References AESCC (Alberta Endangered Species Conservation Committee). 2015. Species Assessed by Alberta’s Endangered Species Conservation Committee: Short List. Alberta Environment and Sustainable Development. Updated April 11, 2016. Available at: https://open.alberta.ca/dataset/0b3421d5- c6c1-46f9-ae98-968065696054/resource/b0e7a2e5-f171-42e0-8c91- 4012dd8ae130/download/speciesassessedconservation-2014.pdf.

AEP (Alberta Environment and Parks). 2017. The General Status of Alberta Wild Species. 2015. Available at: http://esrd.alberta.ca/fish-wildlife/species-at-risk/wild-species-status-search.aspx.

Browne, C.L. and C.A. Paszkowski, 2010. Hibernation sites of Western toads (Anaxyrus Boreas): Characterization and management implications. Herpetological Conservation and Biology 1: 49-63.

Davis, T.M. 2000. Ecology of the Western Toad (Bufo boreas) in forested areas on Vancouver Island. Final Report. Forest Renewal B.C. Ministry of Forests, Victoria, BC.

COSEWIC (Committee on the Status of Endangered Wildlife in Canada). 2017. Canadian Wildlife Species at Risk – October 2017. COSEWIC. Available at: http://www.registrelep.gc.ca/virtual_sara/files/species/Csar2017-Eng.pdf.

Environment Canada. 2009. (Updated Nov. 2011). Petroleum Industry Activity Guidelines for Wildlife Species at Risk in the Prairie and Northern Region. Canadian Wildlife Service, Environment Canada, Prairie and Northern Region, Edmonton, Alberta. 64 pp.

ESRD (Alberta Environment and Sustainable Resource Development). 2013. Alberta Government Sensitive Species Inventory Guidelines. Edmonton, AB. 128 pp.

ESRD (Alberta Environment and Sustainable Resource Development). 2012. Alberta Wildlife Animal Care Committee Class Protocol #003. Wildlife Management Branch. 6 pp. Available at: http://esrd.alberta.ca/fish-wildlife/wildlife-research-collection/documents/WRClassProtocol003- CaptureHandlingAmphibians.pdf

GOA (Government of Canada). 2018. Species at Risk Public Registry. Available at: http://www.sararegistry.gc.ca.

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9.0 BEAR MANAGEMENT PLAN

9.1 Background Interactions with bears (both grizzly and black bear) may occur during construction and operation of the Project. Project clearing could interact with bear dens and denning activity if construction occurs within the bear denning period (e.g., November to 01 May), which may increase the risk of bear mortality. The current construction schedule should not present a risk to denning bears; however, if clearing is delayed to later in the year, then additional mitigation within this plan may need to be implemented. Although efforts will be made to avoid, limit or mitigate potential effects on bears and their habitat, potential conflicts may occur.

Where conflict is unavoidable, Project personnel will consult with the appropriate regulatory agencies and, as appropriate, interested and affected Aboriginal groups to identify possible mitigation measures to be implemented to reduce potential conflicts.

All Project personnel and other visitors to the ROW will participate in NGTL’s environmental awareness training program which will include a discussion of the contents of this Bear Management Plan.

9.2 Objectives The primary objective of the Bear Management Plan is to provide direction to and assist Project personnel in reducing or avoiding bear-human conflicts during the construction and operation of the Project. The goals of the Bear Management Plan are to provide guidelines to prevent direct and indirect mortality of bears. Measures developed to avoid or reduce effects on wildlife and wildlife habitat during construction of the Project are also provided in Section 8.0 in this Environmental Protection Plan (EPP).

9.2.1 Pre-construction Bear Den Surveys The risk of an adverse interaction between the Project and an active bear den can be reduced by locating den sites in advance of clearing, which will allow NGTL additional time to plan appropriate mitigation. If Project clearing is scheduled to occur after 01 November, a pre-construction bear denning survey is recommended for all pipeline Project components. Special attention to the core and secondary grizzly bear areas on the Deep Valley section, and the secondary zones on the McLeod, Dismal and Brewster Creek sections may be necessary if clearing potentially overlaps grizzly bear denning activity. The approach to avoiding or reducing potential interactions with bear dens or denning activity includes the measures listed below:

• Conduct ground surveys for signs of active bear dens or denning activity on or within 200 m of the Project Footprint for areas that will be cleared after 01 November. Since surveys do not expire, conduct the surveys just prior to bear hibernation, typically between October and November. • If an active bear den is discovered on, or within 200 m of, the Project Footprint, halt construction activities within 750 m of the active den until appropriate mitigation is determined through consultation with NGTL Project environmental specialist, NGTL consultant Wildlife Resource Specialist and AEP. • Appropriate buffers and mitigation will be established by the Wildlife Resource Specialist and the Environmental Inspector, in consultation with AEP. • If a bear den is discovered during construction, follow the Wildlife Species of Concern Discovery Contingency Plan in Appendix E of this EPP.

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APPENDIX 1G

REGULATIONS, GUIDELINES AND INDUSTRY BEST PRACTICES

NOVA Gas Transmission Ltd. Environmental Protection Plan 2021 NGTL System Expansion Project Section 58 Facilities and Activities July 2020

REGULATIONS, GUIDELINES AND INDUSTRY BEST PRACTICES

Federal

• Canada Energy Regulator Act, regulations, and guidelines; • National Energy Board Act, regulations, and guidelines; • Impact Assessment Act, 2019; • Canadian Navigable Waters Act; • Migratory Birds Convention Act, 1994, schedules and regulations; • Species at Risk Act, regulation, policies and guidelines; • Fisheries Act, regulations, and guidelines, including; • Fisheries and Oceans Canada (DFO) Measures to protect fish and fish habitat; • DFO Standards and codes of practice including the DFO Interim code of practice: End-of-pipe fish protection screens for small water intakes in freshwater. • Transportation of Dangerous Goods Act, 1992, and regulation; and • Canadian Environmental Protection Act, 1999 and regulations.

Alberta

• Water Act, regulations, codes of practice, and guidelines, including: • Code of Practice for Pipelines and Telecommunication Lines Crossing a Water Body; • Code of Practice for the Temporary Diversion of Water for Hydrostatic Testing of Pipelines; • Code of Practice for the Release of Hydrostatic Test Water from Hydrostatic Testing of Petroleum Liquid and Gas Pipelines; • Code of Practice for Watercourse Crossings; and • Alberta Wetland Policy. • Public Lands Act and guidance documents, including: • Alberta Government Master Schedule of Standards and Conditions. • Forests Act and regulations; • Forest and Prairie Protection Act; • Wildlife Act, and regulation; • Historical Resources Act; • Environmental Protection and Enhancement Act and regulations; and • applicable Alberta Energy Regulator Directives.

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