The Canada Energy Regulator (CER) cited Trans Mountain Corporation for failing to properly maintain environmental protections near Abbotsford, B.C. after recent flooding. The regulator ordered the company to address issues including inadequate watercourse isolation, wildlife fencing, soil coverings, and dewatering pump and sump setups, and to develop a comprehensive water management plan.

On January 31, 2024, during an inspection following recent heavy rainfall near Abbotsford, BC, the Canada Energy Regulator identified several environmental non-compliance issues at the Trans Mountain Pipeline Expansion project. The issues included inadequate watercourse isolation, insufficient wildlife fencing, improper soil coverings, and problematic dewatering arrangements at the construction site.

The Canada Energy Regulator ordered Trans Mountain Corporation to halt its oil pipeline expansion work in a wetland area near Abbotsford, BC due to environmental and safety non-compliance, citing breaches of the CER Act and mitigation requirements.

Trans Mountain Corporation has opted for a more disruptive open-trenching construction method near the sacred Pípsell (Jacko Lake) site, overriding Indigenous community concerns and following a ruling by the Canada Energy Regulator that sided with the company's technical and cost arguments. The decision has raised issues of regulatory capture and unethical business practices that neglect the rights of Indigenous peoples.

The Canada Energy Regulator issued two separate financial penalties totaling $164,000 to Trans Mountain following a 2020 workplace fatality on the Trans Mountain Expansion Project, citing failures in hazard identification, worker training, and supervision. The investigation revealed systemic shortcomings in safety processes.

In 2020, a worker died while disassembling equipment during the Trans Mountain pipeline expansion project. The Canada Energy Regulator fined Trans Mountain Corporation $164,000 for failing to ensure adequate safety, with additional charges from Alberta Occupational Health and Safety.

The Canada Energy Regulator fined Trans Mountain Corporation $164,000 for failing to ensure worker safety, leading to the fatality of a worker on Oct. 27, 2020 during the pipeline expansion project near Edmonton. Charges were also laid by Alberta Occupational Health and Safety.

Trans Mountain Corporation was fined a total of $164,000 by the Régie de l'énergie du Canada following a fatal accident on its pipeline expansion project in October 2020. The regulatory investigation found significant lapses in hazard identification, worker safety protocols, and training, which led to severe administrative sanctions and the termination of contracts with affected contractors.