Compliance Verification Activity Report: CV2122-364 - Trans Mountain Pipeline ULC


Compliance verification activity type: Field Inspection

Activity #: CV2122-364
Start date: 2022-02-28
End date: 2022-03-02


Regulated company: Trans Mountain Pipeline ULC

Operating company: Trans Mountain Pipeline ULC

Province(s) / Territory(s):


Related events:

Rationale and scope:

Inspection of repair work from the November 2021 floods. Follow up to the 2122-349 inspection as well as sites not inspected during that time.

Compliance tool(s) used:

Facility details


Regulatory requirements

Regulatory requirements that apply to this activity:

Observations (no outstanding follow-up required)

Observation 1 - General Observation

Date & time of visit: 2022-02-28 16:00

Discipline: Environmental Protection




On November 14th and 15th 2021, flood events over the South Coast and Thompson/Okanagan Regions caused scour erosion and exposures of the Trans Mountain pipeline. In response to the flooding events, Trans Mountain (TM) has been conducting emergency works to maintain the integrity of the pipeline. Construction has occurred at numerous locations including, temporary and permanent river diversions, bank restoration and armouring, channel stabilization, bridge construction/removal, slope stabilization, log debris removal and fish salvage. Operation and Maintenance Notifications were provided to the Canada Energy Regulator at locations where instream works were being conducted.

TM representatives stated:


General Observations:

KP 939.37 (Site 19) Coldwater River


KP 949.36 (Site 8) Juliette Creek


KP 952.8 (Site 21) Coldwater River

KP 955 (Site 7) Coldwater River


KP 954.36 (Site 15) Coldwater River

- The contractor had completed work approximately 2 weeks prior to the inspection and the work took approximately 17 days.

- Requirements in the DFO Fisheries Act Authorization were met and no fish mortalities were observed.

- Fish salvage and water quality monitoring plans were followed, and turbidity levels were recorded during the removal of the log jam. There were some spikes as expected but no high exceedances.

- A company Indigenous Monitor was on site during construction actives.

- Potential offsets will be determined this spring.

- Additional sediment and erosion control measures were not required.

- A large berm was constructed using a degradation of rocks to protect the left bank and equipment accessed the area using a temporary bridge. Temporary fording did not occur at this location.


KP 963.2 (Site 22) Coquihalla River

- The pipeline was approximately 6 m from the encroachment and some trees had fallen into the river creating a dam.

- A fish salvage was completed prior to construction activities and turbidity levels were monitored.

- The deposited trees were removed and the bank was lined with riprap to prevent further scour. 

-There was no instream work only bank armouring with infill above the former high-water mark to align with pre-flood channel conditions.


KP 962 (Site 14) Unnamed Tributary to the Coquihalla


KP 990.8, 990.58 and 990.3  (Sites 12, 24 and 28) Coquihalla River



Compliance tool used: No compliance tool used

Observations (company follow-up required)

Identified non-compliances to company plans or procedures are non-compliances either to:

- the condition of an authorization document that requires the implementation of that plan or procedure; or

- the relevant section of the regulations that requires implementation of that plan or procedure including those sections that require implementation of plans or procedures as a part of a Program