TransCanada PipeLines Limited - Contaminated Sites Management Final Audit Report - Compliance

Sep 12, 2026

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The Canada Energy Regulator (CER) conducted a Contaminated Sites Management operational compliance audit of TransCanada PipeLines Limited between 14 October 2022 and 11 January 2023. The audit verified that contaminated sites are managed as a component of the company’s Environmental Protection Program in accordance with the Canadian Energy Regulator Onshore Pipeline Regulations. Fourteen audit protocols were assessed, and no issues were identified; all protocols were deemed compliant. The report notes that TransCanada’s management system supports identifying, assessing, and remediating contaminated sites. No further actions were required, subject to the audit closeout and potential redaction requests.

LanguageEnglish

CategoryGeneral

FormatPDF

Pages50

Reading Time18 min

AccessFree to download

Executive Summary

Audit authority and purpose

Audit scope and objective

Summary of findings

Table of Contents

Background

Objectives and Scope

Methodology

Summary of Findings

Discussion

Next Steps

Conclusion

Appendix 1: Audit Assessment

Appendix 2: Terms and Abbreviations

List of Tables

Suite 210, 517 Tenth Avenue SW Calgary, Alberta T2R 0A8 Final Audit Report TransCanada PipeLines Limited Contaminated Sites Management CV2223-233 File OF-Surv-OpAud-T211-2022-2023 0101 23 March 2023 Executive Summary The Canada Energy Regulator (CER) expects pipelines and associated facilities within the Government of Canada’s authority, to be constructed, operated, and abandoned in a safe and secure manner that protects people, property, and the environment. To this end, the CER conducts a variety of compliance oversight activities, such as audits. Section 103 of the Canadian Energy Regulator Act (S.C. 2019, c.28, s. 10) (CER Act) authorizes inspection officers to conduct audits of regulated companies. The purpose of these audits is to assess compliance with the CER Act and its associated Regulations. The purpose of operational audits is to ensure that regulated companies have established and implemented both a management system and its associated programs, as specified in the Canadian Energy Regulator Onshore Pipeline Regulations (SOR/99-294) (OPR) . The CER conducted a Contaminated Sites Management Audit (Audit) of TransCanada PipeLines Limited (TransCanada , or the Auditee) between 14 October 2022 and 11 January 2023. The objective of this Audit is to verify that the Auditee manages contaminated sites as a component of its Environmental Protection Program (EPP) as per the requirements of the OPR. There were 14 audit protocols considered and no issues were identified among each of them. The results of the Audit were that all 14 protocols were deemed to be compliant. Table 1 in thereport summarizes the Audit findings. Detailed assessments can be found in Appendix 1. All findings are specific to the information assessed at the time of the Audit as related to the Audit scope. Overall, within the scope of this Audit , TransCanada demonstrated a well laid out and functional management system. TransCanada’s management system appears to be able to identify, assess, and remediate contaminated sites across their system. Given that there were no issues identified by the CER Auditors (the Auditor/s) with any of the company’s responses to the audit protocol and information request, or during interviews, no further actions are required by TransCanada. An Audit closeout letter will be sent to TransCanada and the Final Audit Report will be made available to the public on the CER website once TransCanada has advised the CER if it has any requests for redactions. Table of Contents 1.0 Background ......................................................................................................................4 Introduction .....................................................................................................................4 Description of Audit Topic ................................................................................................4 Company Overview .........................................................................................................4 2.0 Objectives and Scope.......................................................................................................5 3.0 Methodology.....................................................................................................................6 4.0 Summary of Findings........................................................................................................7 5.0 Discussion ...................................................................................................................... 10 6.0 Next Steps...................................................................................................................... 10 7.0 Conclusion ..................................................................................................................... 10 Appendix 1: Audit Assessment.........................................................................................

FAQs

What was the purpose of the CER operational audit for contaminated sites management?

The audit aimed to verify that the auditee manages contaminated sites as a component of its Environmental Protection Program in line with the Onshore Pipeline Regulations.

When was the Contaminated Sites Management Audit conducted?

The CER conducted the audit from 14 October 2022 to 11 January 2023.

What were the results of the audit protocols assessed?

Fourteen audit protocols were considered, and no issues were identified; all fourteen protocols were deemed compliant.

Sep 12, 2026

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