Pipeline Profiles: Trans Mountain

Pipeline description

Section updated March 2024


The Pipeline Profiles interactive maps provide publicly accessible information about CER-regulated pipeline systems. These maps provide information about the pipeline systems we regulate and allow the user to zoom in and view nearby communities and other geographic features.

The information displayed on this map is not meant to be comprehensive, and some datasets have been filtered to show only the most relevant information. Please see the Interactive Pipeline Map to see a more comprehensive picture of CER-regulated pipelines.

This information is also not intended for locating pipelines for construction activities or any other soil disturbance in the area around a pipeline. Please check our Damage Prevention Website for information on where to Click Before you Dig.

Terms of Use

The Canada Energy Regulator (CER) provides this information for personal and non-commercial uses. The information contained in this map is based on externally sourced information. The CER makes no representations regarding the accuracy of this information. The CER accepts no responsibility or liability for inaccuracies, errors or omissions in the data and any loss, damage or costs incurred as a result of using or relying on the map data in any way.

The pipeline data contained in this map is subject to licensing terms and may not be reproduced, published, distributed or transferred in whole or in part. The map also contains information license under the Open Government License - Canada.

The Canadian Energy Regulator is bound by the Official Language Act and relevant Treasury Board policies. However, some material on these pages originates from organizations not subject to the Official Languages Act and is made available on this project page in the language in which it was written.

Sources and Description


The information contained in these maps is obtained from the following sources: Alberta Energy Regulator (AER) and British Columbia Oil and Gas Commission (BCOGC) (Provincially Regulated Pipelines), CER, from various reports (Oil and Gas Resources) U.S. Energy Information Administration (EIA) (U.S. Pipelines); Environmental Systems Research Institute, Inc. (ESRI) (The Community Map of Canada); Geomatics Data Management Inc. (GDM) (CER-regulated pipelines); Government of Canada: Natural Resources Canada, and Surveyor General Branch (Indigenous Lands); Government of Canada: Crown-Indigenous Relations and Northern Affairs Canada (Modern and Historic Treaties); North American Cooperation on Energy Information (NACEI) (Power Plants).


This map displays the Trans Mountain Pipeline. The Trans Mountain Pipeline extends from Edmonton, Alberta to Burnaby, British Columbia, with delivery points in Kamloops, Sumas, and Burnaby, B.C. This map also displays the U.S. section of the Trans Mountain Pipeline in the northwest of Washington state.


  • The Trans Mountain Pipeline was built in 1953. The pipeline has been modified over the years to ship a variety of crude oils and refined products, and to respond to changing customer needs.
  • The Trans Mountain Pipeline serves markets in British Columbia, Washington State, California, and Asia. It currently has a capacity of approximately 300,000 barrels per day.
  • Once the Trans Mountain Expansion project is operational, the pipeline’s capacity will increase to 890,000 barrels per day. It will be the second-highest capacity oil pipeline in Canada.

Recent events and projects

  • The Anchor Loop Project [Folder 399196] was approved in 2006 to install a second pipeline (loop) next to the existing pipeline from Hinton, Alberta, to a location near Rearguard, British Columbia.
  • This pipeline extends through Jasper National Park and Mount Robson Provincial Park. This project increased the capacity of the pipeline by 40,000 barrels per day.
  • The Anchor Loop Project also involved the deactivation of the existing pipeline. This was maintained in a deactivated state until additional capacity was needed.
  • The deactivated pipeline from this project was one of the two sections that will be reactivated as part of the Trans Mountain Expansion project.
  • The Trans Mountain Expansion project was proposed in 2013 [Folder 2392873] by the Trans Mountain Pipeline ULC. At the time, it was owned and operated by Kinder Morgan.
  • The scope of the expansion project includes:
    1. Building a second pipeline to twin the existing pipeline in Alberta and British Columbia
    2. New and modified pump stations and tanks
    3. An expansion of the Westridge Marine Terminal in Burnaby, British Columbia
  • It is now owned and operated by a federal crown corporation (the Trans Mountain Corporation). Pipeline construction started in 2019 in the Edmonton area.
  • In 2020, 8% of Canada’s crude oil exports were by marine vessel (tankers).
  • Exports from Burnaby, British Columbia, from the Westridge Marine Terminal are shipped to Asia and the U.S. West Coast on the Salish Sea.
  • In January 2020, the Trans Mountain Corporation submitted a plan for marine spill and prevention and response [Document 3902029].
  • This included a $150 million investment in the Western Canadian Marine Response Corporation [Document 2454322].
  • In November 2021, severe flooding throughout the lower mainland of British Columbia resulted in the shutdown of the Trans Mountain Pipeline for 21 days, the longest period in the pipeline’s history.
  • There were no leaks or injuries associated with the pipeline caused by the flooding.
  • To learn more about how the CER responds to emergencies, check out this video.

Indigenous Monitoring

  • Indigenous peoples, the Government of Canada, and the CER worked together to create the Indigenous Advisory and Monitoring Committees (IAMCs).
  • The IAMC-TMX Indigenous Monitoring Program supports Indigenous Monitors to participate in verifying compliance activities through in-field inspections.
  • Involving Indigenous monitors has enhanced the CER’s awareness and understanding of the diversity of Indigenous traditional and cultural practices, including specific expertise in traditional land use, sacred sites, and historical knowledge.
  • Indigenous monitors have participated in over 100 compliance verification inspections on the Trans Mountain Expansion project and existing pipeline.
  • See the CER’s Indigenous Monitoring program page for more details.

The Trans Mountain Pipeline transports crude oil and refined petroleum products from Edmonton, Alberta to refineries and terminals in British Columbia and Washington State. Crude oil is also shipped to offshore markets in Asia and the U.S. west coast via the Westridge Marine Terminal in Burnaby, British Columbia.

Trans Mountain started operations in 1953 and is unique among the major pipelines out of the Western Canadian Sedimentary Basin in that it ships the full spectrum of oils (from refined petroleum products to heavy crude oil) in a single line. CER-regulated assets include approximately 1 330 km of operating pipeline and various auxiliary infrastructure.

The Trans Mountain Pipeline has oil receipt points at Edmonton, Alberta and Kamloops, B.C. At Kamloops it also delivers products. At the Sumas delivery point, the Trans Mountain Pipeline connects with the Puget Sound Pipeline, owned by Trans Mountain Pipeline (Puget Sound) LLC, which delivers oil to four refineries on the west coast of Washington State.

At the Burnaby Terminal, connecting pipelines enable deliveries of crude oil and refined petroleum products to Parkland’s Burnaby Refinery and to Suncor’s Burrard refined products marketing terminal.

The Westridge Marine Terminal is located approximately three kilometres from the Burnaby Terminal. It facilitates marine exports from the Trans Mountain Pipeline to coastal refineries, such as those on the U.S. West Coast or in Asia.

Official CER documents related to the construction, operation and maintenance of the Trans Mountain Pipeline can be found here: Trans Mountain pipeline regulatory documents [Folder 454627].

You can see the Trans Mountain Pipeline and all CER-regulated pipelines on the CER’s Interactive Pipeline Map. The map shows more detailed location information, the products carried by each pipeline, the operating status and more. You can also see a map on Trans Mountain’s website.

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Throughput and capacity

Section updated quarterly (early March, mid-May, mid-August and mid-November)

Select key point:

Select units:

Key Point Map
Key Point Trends
Key Point Description

Note: The physical capacity of a pipeline is based on many factors such as the products being carried, direction of flow, pipeline pumping capacity, and maintenance work or other pressure restrictions. The actual physical capacity of the pipeline may, at times, be higher than the assumed operational capacity stated here.

Dashboard instructions
  • Click on a key point button above the chart & map to view traffic at a different location. The map shows approximate locations on the pipeline where throughputs & capacity are recorded by the pipeline operator.
  • Click and drag your mouse on the area chart to zoom into the desired date range. Click on the Reset Zoom button to reset the full date range.
  • Click on the chart legend items below the chart to remove & add sections of data as required.
  • The key point trends are calculated using quarterly average traffic at the key point. Natural gas throughput trends are displayed year over year (last full quarter of data compared to the same quarter last year). Crude oil and liquids key point trends are displayed quarter over quarter (last full quarter of data compared to the previous quarter).

Note: The five-year average is calculated for natural gas key points using the total throughput across all trade types and direction of flows. For bi-directional key points (both export and import) the throughput is displayed for both directions, instead of the five-year average.

Source and description

Data Source: Open Government

Description: The above dashboard displays pipeline throughput and capacity at key point(s) along the system. Where possible, the five-year average and five-year range for throughput is shown with the current year throughput to better highlight the trends. For pipeline key points with a defined location, a map is displayed next to the graph showing the approximate key point location where pipeline throughput and capacity are recorded.

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Section updated December 2021

On December 16, 2013, Trans Mountain submitted an application to the NEB for the Trans Mountain Expansion project [Folder 2392873]. The project includes:

  • Pipeline facilities that complete a twinning of the existing Trans Mountain pipeline system in Alberta and British Columbia, with about 991 km of new buried pipeline;
  • New and modified facilities, such as pump stations and tanks;
  • Additional tanker loading facilities at the Westridge Marine Terminal in Burnaby;
  • Reactivation of 193 km of pipeline between Edmonton and Burnaby; and
  • Increasing Trans Mountain’s shipping capacity from 300 000 bbl/d to 890 000 bbl/d.

For more information, see the Trans Mountain Expansion project CER information page.

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Nomination and Verification Procedures

Section updated December 2021

Pipeline tariffs specify the procedures by which shippers are to submit nominations for transportation service, including the form and timing of nominations. The tariffs also set out the rights and authorities of pipeline companies to verify nominations. The CER regulates and determines compliance with tariffs for pipelines under its jurisdiction, which include the major export pipelines from western Canada. Pipeline companies and shippers are required to follow the rules and regulations of transportation service as set out in the tariffs.

Trans Mountain uses different types of verification, depending on the circumstances. For each shipper’s nomination, Trans Mountain requires written third-party verification from the interconnected upstream facility that the shipper has the capability to tender product to satisfy its nominated volume. Trans Mountain also requires written third-party verification from the downstream delivery destination that the shipper has the capability to remove its nominated volume from the pipeline. If a shipper cannot provide upstream verification or destination verification from unaffiliated third parties, Trans Mountain requires the shipper to provide a certificate executed by an officer that addresses both supply and destination verification.

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Section updated March 2024

A shipper must submit nominations each month it wishes to move its oil on a pipeline. Shippers must submit nominations for both committed (or contracted) transportation service, if available, as well as uncommitted transportation service. If the total volume of nominations for uncommitted capacity is more than what is available, the pipeline company must “apportion” the nominations.

Apportionment is the percentage by which each shipper’s nominated volume is reduced in order to match the pipeline’s uncommitted capacity. Generally, apportionment is applied equally across all shippers seeking to use that capacity: for example, if shipper A nominates 100 barrels and shipper B nominates 1 000 barrels, then, under 10% apportionment, shipper A will be able to ship 90 barrels, and shipper B will ship 900 barrels.

The interactive graph below shows data for nominations and apportionment on the pipeline system.

Select units:

Source and description

Data Source: Open Government

Description: The above chart displays pipeline nomination data for the pipeline system. Original nominations are shown as a blue area on the chart, with available pipeline capacity shown as a yellow line. If available, the apportionment percent can be toggled onto the chart as a green line by clicking on “Apportionment Percent” directly below the chart.

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Section updated August 2021

A toll is the price charged by a pipeline company for transportation and other services. Tolls allow pipeline companies to safely operate and maintain pipelines. Tolls also provide funds for companies to recover capital (the money used to build the pipeline), pay debts, and provide a return to investors. The interactive graph below shows the tolls for key paths on the pipeline.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available.

Trans Mountain currently operates under a three-year Incentive Toll Settlement (2019-2021 ITS). Tolls have fluctuated as over or under-recoveries of revenues are transferred to future years. Tolls are based on the quality of crude oil, the volumes and the specific pipeline path.

Official CER documents related to the traffic, tolls and tariffs for the Trans Mountain Pipeline can be found here: Trans Mountain Pipeline toll documents [Folder 552980].

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Abandonment funding

Section updated January 2024

The CER requires all pipelines to set aside funds to safely cease operation of a pipeline at the end of its useful life. In 2016, Trans Mountain estimated it would cost $368 million to do this. These funds will be collected over 40 years and are being set aside in a trust.

Table 1: Trans Mountain Pipeline’s abandonment trust fund balance
  2018 2019 2020 2021 2022
Trust fund balance ($) 56,091,000 73,246,000 92,731,000 99,837,000 92,266,000

Official CER documents related to abandonment funding can be found here, sorted by year and by company: abandonment funding documents [Folder 3300366].

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Pipeline financial information

Financial resource requirements

Section updated June 2021

The Canadian Energy Regulator Act requires major oil pipeline companies to set aside $1 billion to pay for the costs of any incident that occurs, such as a spill. See sections 136 to 142 of the Act for more information. Trans Mountain Pipeline ULC demonstrated that it has financial resources in excess of $1 billion dollars. Official CER documents related to the Trans Mountain’s financial resources can be found here: Trans Mountain financial resources documents [Folder 2949657].

Trans Mountain Pipeline financial information

Section updated January 2024

Pipeline companies report important financial information to the CER quarterly or annually. A strong financial position enables companies to maintain their pipeline systems, attract capital to build new infrastructure, and meet the market’s evolving needs. The data in this table comes from Trans Mountain’s incentive toll settlement filings with the CER [Folder 552980].

Table 2: Trans Mountain Pipeline financial dataFootnote 1
  2014 2015 2016 2017 2018 2019 2020 2021 2022
Total Revenues (million $) 292 275 286 287 295 321 318 342 382
Revenue requirement (million $) 292 293 270 287 283 327 293 327 383
Equity Return (million $) 36 38 47 43 47 38 44 47 56
Total average rate base (million $) 994 1,005 1,005 985 971 965 981 999 1,033
Deemed equity ratio (%) 45 45 45 45 45 45 45 45 45
Rate of return on common equity (%) 8.06 8.50 10.43 9.69 10.83 8.84 10.07 10.46 12.13
Corporate financial information

Section updated December 2021

The Trans Mountain Pipeline is owned by Trans Mountain Corporation, which is a federal Crown corporation. It is accountable to Parliament through the Canada Development Investment Corporation (CDEV). As a wholly-owned subsidiary of CDEV it is governed by an independent Board of Directors.

Financial regulatory audits

Section updated December 2021

The CER audits pipeline companies to confirm compliance with the Canadian Energy Regulator Act, regulations, CER orders and CER decisions. Financial regulatory audits focus on toll and tariff matters such as detecting cross-subsidies. Trans Mountain’s last audit was completed in February 2008. Official CER documents related to Trans Mountain’s financial regulatory audits can be found here: [Folder 571482].

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Safety and Environment

Conditions Compliance

Section updated March 2024

Every pipeline company in Canada must meet federal, provincial or territorial, and local requirements. This includes Acts, Regulations, rules, bylaws, and zoning restrictions. Pipelines are also bound by technical, safety, and environmental standards along with company rules, protocols and management systems. In addition to these requirements, the Commission may add conditions to regulatory instruments that each company must meet. Conditions are project-specific and are designed to protect public and the environment by reducing possible risks identified during the application process.

Condition compliance is part of the CER's oversight and enforcement action is taken when required.

Conditions can be related to a specific region, or apply to the pipeline project as a whole. The map below displays the number of in progress and closed conditions mapped to economic regions as defined by Statistics Canada.

Conditions can typically be either in-progress or closed. The CER follows up on in-progress conditions.


This status refers to conditions that continue to be monitored by the CER. This happens when:

  • condition filings have not yet been received by the CER; or,
  • filings have been received but are under review or do not yet meet requirements; or,
  • a project is not completed and it has conditions, which have not been met; or,
  • a project has a post-construction condition, but a requirement has not yet been completed; or,
  • some conditions may be active indefinitely or refer to the continued operation of a pipeline.

This status refers to:

  • condition requirements that have been satisfied, and no further submissions from the company are required; or
  • conditions whose filings or actions apply to a specific phase that have been fulfilled as the phase is completed (i.e. a specific filing during construction phase). Note: comments on the required actions can still be received.

Dashboard instructions
  1. Click on a region to view conditions info
  2. Click map area outside of regions to hide info

Note: Some conditions apply to multiple regions. Conditions may be double counted across regions, resulting in a higher number of conditions than the totals seen in the buttons above.

Source and description

Data Source: Open Government

Description: The above map displays the number of CER conditions associated with projects approved by the Commission. The map is split into two tabs which show in-progress and closed conditions separately, mapped to an economic region. If a company has no in-progress conditions specific to an economic region, the dashboard will default to show the closed conditions by region. An additional view is available which contains the number of in-progress and closed conditions that don't have a corresponding economic region in the dataset. The map regions are shaded based on the number of conditions, with lighter coloured regions containing fewer conditions compared to darker colors. Conditions that apply to more than one region are double counted in the map, and these conditions will appear in the map region total and map region breakdown for each applicable region. The condition counts contained in the map navigation buttons represent total conditions without region double counting.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available [CSV].

Have you checked out the CER's interactive conditions data visualization? This tool offers a deep dive into the CER's conditions compliance data and process, exploring conditions across all CER regulated companies by keyword, project, and location.

Reported Incidents

Section updated March 2024

The information presented here is based on CER data (2008 to current) for incidents reported under the Onshore Pipeline Regulations and the Processing Plant Regulations. New data is added quarterly. Learn more on how incident data collection has evolved since the NEB (now the CER) was established in 1959.

Companies must report events, such as incidents, to the CER in accordance with the CER Event Reporting Guidelines. Knowing what happened, and why, helps us find ways to prevent them from happening again.

What is an incident? (Onshore Pipeline Regulations (OPR))

As defined in the OPR, “incident” means an occurrence that results in:

  1. the death or serious injury to a person;
  2. a significant adverse effect on the environment;
  3. an unintended fire or explosion;
  4. an unintended or uncontained release of low vapour pressure (LVP) hydrocarbons in excess of 1.5 m³
  5. an unintended or uncontrolled release of gas or high vapour pressure (HVP) hydrocarbons;
  6. the operation of a pipeline beyond its design limits as determined under CSA Z662 or CSA Z276 or any operating limits imposed by the CER.
What is an incident? (Processing Plant Regulations (PPR))

As defined in the PPR, “incident” is defined as an occurrence that results or could result in a significant adverse effect on property, the environment, or the safety of persons. For the purposes of incident reporting in the PPR, events that fall under this definition include, but are not limited to:

  1. the death or serious injury to a person;
  2. a significant adverse effect on the environment;
  3. an unintended fire or explosion that results in or has the potential to result in damage to company, public/crown or personal property;
  4. an unintended or uncontained release of low vapour pressure (LVP) hydrocarbons in excess of 1.5 m³
  5. an unintended or uncontrolled release of gas, HVP hydrocarbons, hydrogen sulfide or other poisonous gas; or
  6. the operation of a plant beyond its design limits or any limits imposed by the CER.
Incidents and the CER

Companies self-report incidents and are expected to take a precautionary approach in doing so. This means that even when there is doubt as to whether an incident should be reported, the company must report it. The approach is, “When in doubt, report.” This is consistent with CER-regulated companies’ responsibility for anticipating, preventing, mitigating and managing incidents of any size or duration.

The CER reviews all reported incidents to assess whether companies have taken the appropriate corrective actions and to identify potential trends in incidents. Each incident is given a status indicating the current stage of the CER's incident review.

CER Status
  • Initially Submitted: The company has notified the CER that an incident has occurred and provided preliminary information. A review has been initiated.
  • Submitted: The company has submitted all of the required information and the CER is reviewing the incident.
  • Closed: The CER’s incident review has been completed and the file is closed.
Incident type definitions: one incident can have multiple types
  • Release of Substance (featured in the dashboard) - Any time a product is unintentionally released. (Releases of non-gas low pressure products in volumes of less than 1.5 m³ are exempt from reporting.)
  • Adverse Environmental Effects - When any chemical substance is released at a concentration or volume that has the potential to change the ambient environment in a manner that would cause harm to human life, wildlife or vegetation (e.g., glycol, potassium carbonate, methanol, methanol mix from hydrostatic testing, etc.).
  • Explosion - An unintended explosion
  • Fatality - Any death involving employees, contractors or members of the public related to the construction, operation, maintenance or abandonment of pipelines
  • Fire - An unintended fire
  • Operation Beyond Design Limits Includes situations, such as:

    • over-pressures - i.e., pressures that are higher than the maximum the equipment was designed to safely handle;
    • vibration beyond design limits;
    • slope movements causing movement in the pipeline beyond design limits;
    • pipe exposures in rivers or streams; and
    • introduction of an inappropriate product (e.g., sour gas in excess of CSA limits)

    Operation beyond design limit is typically linked to an over-pressure of the product in the pipe; however, if a pipe was exposed to excessive vibration and was not designed for this, this could be considered operation beyond design limits. Operation beyond design limits does not include equipment contacting the pipe, or corrosion pits, etc.

  • Serious Injury (CER or Transportation Safety Board) - Any serious injury involving employees, contractors or members of the public related to the construction, operation or maintenance of pipelines.

Are there any incidents near me?
Select range (100km):
Source and description

Data Source: Open Government

Description: The above map displays the location of product release incidents that have occurred on the pipeline system since 2008. The map defaults to show incidents as bubbles which are coloured based on the substance released. Incidents on the map can be re-categorized based on the most recently available status of the CER's incident review, the year in which the incident was reported, and the province/territory where the incident occurred. The incident map bubble can be switched to show the estimated volume of product released, with larger map bubbles showing larger release volumes relative to other product releases on the system. The incident data can also be toggled to display a stacked bar chart of incidents over time by clicking on the incident trends button above the map. The stacked bars display the number of product release incidents by year, with bar colour segments corresponding to the various products released. Similar to the map, incidents can be re-categorized by clicking on the side buttons to view a breakdown of incidents by status, what happened, why it happened, and province/territory.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available [CSV].

Have you checked out the CER's interactive incident data visualization? This tool offers a deep dive into the CER's incident data trends, exploring incidents across all CER regulated companies.

Operations and Maintenance Activities

Section updated March 2024

Oil and gas pipeline companies regularly conduct routine operations and maintenance (O&M) activities on CER regulated pipelines. These activities include things such as pipeline repairs, investigative and integrity digs, and many other activities while promoting safety, security, environmental protection, economic efficiency, and respect for the rights of those that may be affected.

Companies are required to adhere to Canadian Energy Regulator Act’s Onshore Pipeline Regulations and operate their facilities in a manner that is safe and protects the environment. Authorizations for pipelines typically allow companies to construct and operate a facility, and companies are not required to apply for additional approval to undertake most O&M activities. In certain circumstances, companies are required to notify the CER in advance with sufficient information to make a determination as to whether to inspect O&M activities that could result in safety consequences to landowners or the public, environmental consequences, or a negative impact on normal third-party use of the right-of-way (ROW) or adjacent property.

What activities are O&M activities (eligible activities)?

Operations and maintenance activities include:

  1. All activities necessary to safely operate an existing pipeline;
  2. Maintenance activities, upgrades or repairs to an existing pipeline or part of a pipeline that do not increase the approved maximum operating pressure (MOP), the stress level or diameter of the pipeline; or
  3. Physically removing an existing section of pipe up to 5 km in length, and putting a new section of pipe in its place, as long as this replacement does not increase the approved MOP, stress level or diameter of the pipeline.
What O&M Activities require CER approval (restrictions on eligible activities)?

Where any of the following restrictions exist, the company must apply to the Commission in accordance with the CER Act and the related regulations and may not carry out the proposed activity until approval from the Commission has been obtained. The restrictions apply where:

  1. The work includes welding on an in-service pipeline by a pipeline company that has not previously performed in-service welding in accordance with the requirements of CSA Z662-15, Clause 7.17, ‘Welding on In-Service Piping’, or the equivalent clause in the most recent edition of CSA Z662; or
  2. The work involves the construction of an aerial crossing, excluding work on company owned or leased land relating to facilities (e.g., terminal stations, processing plants, compressor/pump stations).
What kinds of activities are not O&M activities (ineligible activities)?

O&M activities do not include:

  1. Upgrades that result in increases above previously approved and specified levels to:
    • the MOP,
    • stress levels,
    • the diameter of the pipeline, and/or
    • airborne emissions or noise levels.
  2. "Looping" (i.e., adding pipe parallel or adjacent to, and interconnected with, an existing pipeline for the general purpose of increasing capacity);
  3. Construction of a new pipeline; or
  4. Deactivation (for longer than 12 months), reactivation (where a pipeline has been deactivated for more than 12 months), decommissioning, or abandonment.
The dashboard and figures presented below only include O&M activities from 2015 onwards that require notification to the CER. Consult the O&M Requirements and Guidance Notes for a list of O&M event activities that call for notification to be filed with the CER.

Source and description

Data Source: Open Government

Description: The above bar chart displays the number of O&M activities from 2015 to current, arranged based on the starting year of the activity. Each bar is stacked based on several parameters, with the default view showing the province/territory where the O&M activity occurred. Navigation buttons to the right of the bar chart provide the option to view the number of O&M activities by province/territory, if the activity includes an integrity dig, if in-stream work is required, if there are fish present, and if there are species at risk present.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available [CSV].

View the requirements and guidance notes (O&M Guidelines) for more information on how these events are regulated while promoting safety, security, environmental protection, economic efficiency, and respect for the rights of those that may be affected.

Contaminated Sites and Remediation

Section updated March 2024

As part of the CER’s environmental protection activities, we require companies to manage and remediate contamination throughout the lifecycle of the facilities. As a first step, regulated companies are required to report contamination to the CER through the online submission of the Notification of Contamination (NOC).

After the NOC is submitted, companies must demonstrate they are actively managing the contamination according to the Remediation Process Guide. The progress and current status of remediation at the contaminated site are captured in the annual update submitted by a company each year for a contaminated site.

Third party contamination is on-site contamination that is shown to not be emanating or migrating from the company’s facilities or company-owned or leased lands or Right-of-Way. While third-party contamination is not the result of company activities, the CER still requires that this contamination is reported to the CER through the submission of the NOC.

The dashboard below contains information that is contained in the NOC's and annual updates found in REGDOCS. The CER publishes NOCs that have been submitted to the CER since August 2018, when the CER started collecting this information electronically and annual updates that have been submitted since 2021. For information on contaminated sites for which NOCs were submitted prior to August 2018, email remediation@cer-rec.gc.ca.

There are many different methods and approaches to remediate contamination. Thus, when a company submits a plan for remediation (i.e., remedial action plan) for CER review, they are required to include an options analysis to support the remedial method chosen, select appropriate remediation criteria and demonstrate engagement with potentially affected persons, among other requirements. CER analysts also review closure reports submitted by the company once the remediation is completed to ensure remediation has been completed appropriately.

Are there any contaminated sites near me?
Select range (100km):
Source and description

Data Source: Open Government

Description: The above map displays the approximate location of contaminated sites that have been reported since August 2018. The map defaults to show contaminated sites as bubbles which are coloured based on the year the Notice of Contamination was submitted. Contaminated sites on the map can be re-categorized based on the province/territory, if the site is within 30 metres of a water body, and the applicable land use at the site. The contaminated sites can also be toggled to display a stacked bar chart of events over time by clicking on the contaminated sites trends button above the map. The stacked bars display the number of contaminated sites reported by year. Like the map, contaminated sites can be re-categorized by clicking on the side buttons to view a breakdown of contaminated sites by site status, activity at time of discovery, pipeline or facility, and contaminant type.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available [CSV].

Damage Prevention Regulations Contravention Reports

Section updated March 2024

Damage prevention is where people and pipelines meet; it is the proactive process that keeps people, the environment, and pipelines safe.

The CER takes action to protect Canadians and the environment. Some of these actions include having safety requirements for activities near the pipelines that we regulate. Unauthorized activities on or around pipelines are unsafe and illegal. If pipelines are contacted or damaged, the result could be very serious.

The CER Damage Prevention Regulations (DPRs) outline the obligations of the pipeline companies to have robust damage prevention and public awareness programs that provide people living and working near pipelines the information to ensure those activities near their pipelines are done safely with respect to the pipeline. The DPRs also outline the requirements for people living and working near pipelines to communicate with pipeline companies when they are planning any construction activity (digging, building, driving on the right-of-way) and to follow the instructions that the pipeline company gives them.

Damage prevention is a shared responsibility, and we all play a part in making sure that everyone stays safe when working near a pipeline.

Pipeline companies must immediately report to the CER any activity near their pipelines that does not follow the rules and specifications set out in the DPRs. These violations are called contravention reports. The CER provides an Open Government dataset containing information on each reported contravention. Some summary statistics and a dashboard displaying this data is available below.

Are there any DPR contraventions near me?
Select range (100km):
Source and description

Data Source: Open Government

Description: The above map displays the location of DPR contravention reports that have been reported for the pipeline system over the past five plus years. The map defaults to show DPR contravention reports as bubbles which are coloured based on whether the pipe was damaged. DPR contravention reports on the map can be re-categorized based on whether there was a ground disturbance, the year, and who discovered the event. The DPR contravention reports data can also be toggled to display a stacked bar chart of events over time by clicking on the DPR Contravention Reports Trends button above the map. The stacked bars display the number of DPR contravention reports by year, with bar colour segments corresponding to the event type. Similar to the map, DPR contravention reports can be re-categorized by clicking on the side buttons to view a breakdown of events by whether pipe was damaged, who discovered the event, and method of discovery.

Open data can be freely used and shared by anyone for any purpose. The data for these graphs are available [CSV].

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Emergency management

Section updated December 2021

The CER checks to make sure companies are keeping pipelines safe by doing inspections, in-depth safety audits, and other activities. Yet, even with these precautions, an emergency could still happen. Sound emergency management practices improve public safety and environmental protection outcomes, and provide for more effective emergency response.

The CER holds its regulated companies responsible for anticipating, preventing, mitigating, and managing incidents of any size or duration. Each company must have an emergency management program that includes detailed emergency procedures manuals to guide its response in an emergency situation. We oversee the emergency management program of a regulated company’s projects as long as they operate.

The CER requires companies to publish information on their emergency management program and their emergency procedures manuals on their websites so Canadians can access emergency management information. To view Trans Mountains’ Emergency Response Plan, go to its Emergency Response Plans website.

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