Line 21 (Norman Wells Pipeline) Segment Replacement Project

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Line 21 (Norman Wells Pipeline) Segment Replacement Project

Information Update: October 2018

We are pleased to announce the completion of the Line 21 Segment Replacement Project. The Horizontal Directional Drill (HDD) under the Mackenzie River was successful, and the original pipeline segment has been fully decommissioned. Enbridge submitted a Leave to Open (LTO) Application with the National Energy Board (NEB) in August 2018, which was approved by the NEB on September 24, 2018. The service of the line has since been safely restarted.

Learn more about the latest activity on the Line 21 Segment Replacement Project by reading our Fall 2018 community newsletter.


Information Update: July 2018

Construction has begun on the Line 21 Segment Replacement Project. Enbridge finished construction of the 11 km matted access road, installed the bridge at Manners Creek, set up the South Side camp, prepared and finished North Work Site and North Camp, established a water taxi with a dock installed at the North Side, and started the horizontal directional drilling (HDD) under the Mackenzie River.

Learn more about the latest activity on the Line 21 Segment Replacement Project by reading our Summer 2018 community newsletter.


Information Update: September 2017

The Line 21 Segment Replacement Project is an essential safety and integrity-driven maintenance project.

Through the ongoing monitoring program for Line 21, Enbridge identified increased rates of slope movement around the south slope of the Mackenzie River crossing, approximately 10 kilometres southeast of Fort Simpson.  As a result, in November 2016 , as a precautionary measure, Enbridge took action to shut down the pipeline, purging and isolating the section of pipe under the Mackenzie River and the south slope.  In order to protect the pipeline and the surrounding environment in the event of further slope movement, Enbridge plans to decommission the segment of pipeline in the active slope and install a new section of pipe under the river, by using a horizontal directional drill, so that safe operation of Line 21 may resume.  The reason we are doing this work is to protect the environment, protect the water, and protect the land.


REGULATORY TIMELINE

The National Energy Board (NEB) will be holding a public hearing in Fort Simpson the week of October 23, 2017. This hearing will be held in conjunction with the Mackenzie Valley Land and Water Board oral hearing, also being held in Fort Simpson the week of October 23, 2017. 

The National Energy Board (NEB) has committed to release its decision on the project within 12 weeks following the close of the hearing.


Information Update: May/June 2017

A public hearing has been scheduled to commence the week of Aug. 8 in Fort Simpson, Northwest Territories and the National Energy Board (NEB) has committed to release its decision on the project within 12 weeks following the close of the hearing.

Enbridge is supportive of a full and fair hearing of our regulatory applications. This is a safety-driven preventative maintenance project, designed to resume operation of an existing pipeline that has been in place since 1985.

REVISED PROJECT TIMELINE

In our regulatory applications, Enbridge had proposed a construction start date of June 2017; however, with the regulatory timeline now clarified, that schedule is no longer feasible. Pending regulatory approval, we now plan to execute the Project in the summer of 2018 as follows:

May/June 2018 – mobilize crews and equipment

July 2018 – begin horizontal directional drilling (HDD)

September 2018- anticipated completion of project activities

In the meantime, Enbridge continues to engage stakeholders, including Indigenous communities, with respect to the Line 21 Segment Replacement Project as we progress through the regulatory process.

The NEB will be holding a community meeting in Fort Simpson on June 6, to provide hearing participants with information on how the regulatory process will unfold and to answer questions.

Later in June, Enbridge plans to host a Community Open House at the Recreation Centre in Fort Simpson. Further details will be provided in a mail notification to Fort Simpson residents.

MACKENZIE VALLEY LAND AND WATER BOARD APPLICATIONS

Enbridge's applications for a Type ‘A’ Land Use Permit and Type ‘B’ Water License were deemed complete by the Mackenzie Valley Land and Water Board on April 19. On May 31, the MVLWB provided further direction to Enbridge and is seeking additional information and submissions from reviewers and Enbridge by before continuing with the regulatory process, with a final submission deadline of June 21.

INDIGENOUS ENGAGEMENT

Enbridge has been consulting with potentially impacted Indigenous communities about the proposed project since January 2017.

We will continue to engage with stakeholders in open and transparent dialogue throughout the regulatory process, as well as through project construction and operations.

We will continue to offer meaningful opportunities to engage for the purposes of exchanging information regarding the project, responding to inquiries, hearing and responding to any interests and concerns that may arise, including those related to potential economic opportunities.

HORIZONTAL DIRECTIONAL DRILLING

Enbridge is proposing to install the replacement pipeline segment via HDD, which is recognized as an industry best practice crossing method that minimizes environmental risk to waterbodies through construction and operations.

The NEB describes HDD as the most common type of trenchless crossing which can be used to avoid congested or environmentally sensitive areas such as large or sensitive waterbodies (see Crossing Rivers and Streams,

https://www.neb-one.gc.ca/bts/nws/rgltrsnpshts/2016/10rgltrsnpsht-eng.html#wb-sec

HDD is the most technically feasible means of installing the replacement segment of pipe. Enbridge has successfully completed numerous HDD installations in both Canada and the United States.

In 2016, Enbridge successfully completed a segment replacement by HDD under the Mississippi River, the largest river in North America.


Information Update: April/May 2017

Enbridge has filed regulatory applications for the Line 21 Segment Replacement Project with the National Energy Board (NEB) and the Mackenzie Valley Land and Water Board (MVLWB).

On April 19, 2017, the MVLWB accepted Enbridge’s applications for a Type A Land Use Permit and Type B Water License in support of the project. The land use permit and water license applications are available for stakeholder review and comment on the MVLWB’s Online Review System until May 9, 2017.

Enbridge staff and contractors will be visiting the proposed project area in mid-May to do some preliminary, non-intrusive surveying and assessments. As a result of further planning, there have been several updates to the proposed project scope: Temporary workspace requirements have been refined. Revisions include increased work space at the North and South work sites, a laydown area near the South Camp, and turnaround pullouts along the access route on the south side of the Mackenzie River crossing.

  • Camp requirements have been revised to include two land-based camps, one on each side of the river crossing. Enbridge has applied for a 40-person camp to be established adjacent to the pipeline Right-of-Way on the north side of the Mackenzie River pipeline crossing, and an 80-person camp adjacent to the pipeline Right-of-Way near the Liard ferry landing. Barge-based camp accommodations will not be used.
  • As a minor scope addition, Enbridge is proposing to relocate an existing pipeline valve approximately 60 metres downstream on the pipeline to allow activities at the South work site. Valve relocation is a routine pipeline construction activity and the work will be confined to the existing pipeline Right-of-Way.

Enbridge continues to engage stakeholders with respect to the Line 21 Segment Replacement Project as we focus on working diligently to comply with the National Energy Board’s requests for additional project information.

In the meantime, we continue to work with our customer to evaluate the scope of this project, including scheduling.


Information Update: March 2017

In January and February, we began work to investigate replacing the pipe segment that runs under the Mackenzie River using horizontal directional drilling (HDD). We have now completed borehole drilling and geophysical survey work on both sides of the river crossing, and on the river ice, within the Enbridge pipeline right of way.

On March 10, Enbridge filed regulatory applications with the National Energy Board (NEB) for the proposed Line 21 Segment Replacement Project. At the same time, we sent a notification letter to potentially affecting stakeholders indicating that the applications have been filed.

The regulatory applications can be viewed at:
http://docs.neb-one.gc.ca/fetch.asp?language=E&ID=A82026

We are proposing to use horizontal directional drilling (HDD) to install a new pipe segment and to decommission an existing segment that crosses the Mackenzie River, approximately 10 km east of Fort Simpson, Northwest Territories.

HDD is an engineered solution which would ensure the long-term protection of the Mackenzie River and optimize safety and protection of the pipeline from instability along the valley slopes, river banks and the waterway.

Subject to regulatory and customer approval, drilling would begin in August with completion targeted for late October.

The existing pipe segment would be decommissioned in place. Decommissioning in place is the safest and least disruptive option – it avoids the added disturbance and significant construction activities that excavation and removal would bring and significantly reduce the risk of future soil and slope instability.

A link to filed materials is provided below. These materials are now on the public record, accessible to anyone through the NEB’s online registry. Enbridge has sent a notification letter to the Project’s potentially affected stakeholders indicating that the applications are filed.


Information Update: February 2017

In January and February, we began work to investigate replacing the pipe segment that runs under the Mackenzie River using horizontal directional drilling (HDD).

We conducted borehole drilling and geophysical survey work on both sides of the river crossing, within the Enbridge pipeline right of way, followed by drilling on the river ice.

The purpose of the borehole drilling we’ve been doing is to collect core samples for analysis which will provide critical information for planning the HDD.

HDD is an engineered solution which would ensure the long-term protection of the Mackenzie River and optimize safety and protection of the pipeline from instability along the valley slopes, river banks and the waterway.

In the case of large rivers or certain sensitive crossings, Enbridge uses HDD technology where feasible, to install underground pipelines. HDD projects are designed to minimize environmental and stakeholder impact, particularly in sensitive areas.

We plan to file regulatory applications with the National Energy Board (NEB) in March to install a new pipe segment using HDD and to decommission the existing pipeline segment that crosses the Mackenzie River.

Subject to regulatory and customer approval, drilling would begin in August with completion targeted for late October.

The existing pipe segment would be decommissioned in place. Decommissioning in place is the safest and least disruptive option – it avoids the added disturbance and significant construction activities that excavation and removal would bring and significantly reduce the risk of future soil and slope instability.