Spring 2018

Enbridge is committed to continued dialogue with local Aboriginal communities and stakeholders in the interest of sharing Project-related information and identifying Line 21 and resolving any questions or concerns associated with planned activities. Segment You can get in touch with us any time: By phone: 1-888-263-3654 By email: [email protected] Replacement

On the web: www.enbridge.com/line21 Project

enbridge.com/line21 blog.enbridge.com & Twitter / Facebook visit please more, out Find — at us Find

[email protected] 1.888.263.3654 or or at us to out reach please

If you have any questions about the Line 21 Segment Replacement Project or the deactivation, deactivation, the or Project Replacement Segment 21 Line the about questions any have you If

M K 10 5 0

A A T T R R E E ALB ALB A MBI U L O C H ITIS R B

Zama

River

Mackenzie

Fort Simpson Simpson Fort Fort

ea r a

River

Liard Liard

ed t impac

Slope

Trout Lake Trout Trout Lake Trout

[email protected] 992-0997 1-888- or by email at at email by or at us contact can

Cormack Lake Cormack

if you have any questions, concerns or input you may have regarding the Line 21 Project. You You Project. 21 Line the regarding have may you input or concerns questions, any have you if

Lake

Slave Slave

River

Mackenzie Mackenzie

Project-related interests and concerns that may arise. Please do not hesitate to reach out to us us to out reach to hesitate not do Please arise. may that concerns and interests Project-related Liard

Great Great Mackenzie

and stakeholders, and are committed to listening, understanding, and responding to any any to responding and understanding, listening, to committed are and stakeholders, and

River

South Nahanni South

Fort Simpson Fort Fort Simpson Fort

We look forward to continued engagement with all interested Aboriginal communities communities Aboriginal interested all with engagement continued to forward look We

River website (enbridge.com/line21) as well as on the NEB’s and MVLWB’s websites. MVLWB’s and NEB’s the on as well as (enbridge.com/line21) website

North Nahanni North

etc. Enbridge’s submissions to meet these conditions can be accessed through our Line 21 21 Line our through accessed be can conditions these meet to submissions Enbridge’s etc.

submit regular engagement reports, an updated engagement plan, a camp management plan, plan, management camp a plan, engagement updated an reports, engagement regular submit

Y R O RIT R TE Y R TO I RR E T

Both the NEB and the MVLWB approved the Project with conditions, which include the need to to need the include which conditions, with Project the approved MVLWB the and NEB the Both

U Y N N O K KO YU

Wrigley Wrigley

Wrigley Wrigley

schedule and some construction safety awareness information. information. awareness safety construction some and schedule

to begin in mid-March. To keep you informed, this newsletter contains a proposed construction construction proposed a contains newsletter this informed, you keep To mid-March. in begin to

S IE R O T I R R E T T ES W H T R O N S IE OR IT RR E T EST W H T R O N

to begin construction on the Line 21 Segment Replacement Project. Construction is expected expected is Construction Project. Replacement Segment 21 Line the on construction begin to

the National Energy Board (NEB) and the Mackenzie Valley Land and Water Board (MVLWB) (MVLWB) Board Water and Land Valley Mackenzie the and (NEB) Board Energy National the

We are pleased to announce that we have received the regulatory approvals necessary from from necessary approvals regulatory the received have we that announce to pleased are We

—

d a o R

n w o T / y t i C n o i t a t S Tulita

March 2018 March

n o i g e R u t h a S l a n i m r e T

n o i g e R o h C h e D e n i l e p i P e g d i r b n E

Great Bear River Bear Great Bear Great

Line 21 Pipeline 21 Line Update Project

Norman Wells Norman Norman Wells Norman

. c In ) W N ( s e n i l e p i P e g d i r b n E

KEEPING YOU INFORMED YOU KEEPING Spring 2018 Spring Summer 2017 Line 21 Segment Replacement Project

CONSTRUCTION Horizontal Directional Drilling Specialized construction for large waterways and sensitive areas — Horizontal directional drilling (HDD) is recognized as an industry best practice crossing method that minimizes environmental risk to waterbodies through construction and ongoing operation. In addition to being among the least intrusive options available, HDD is the safest and most technically feasible means of installing the replacement segment of pipe deep below the . This construction technique involves drilling a tunnel under the river, and pulling the replacement pipe through the drilled underground tunnel.

Enbridge will be hosting an Information Session in Fort Simpson in June 2018 to discuss detailed, technical information relating to HDD activity as well as emergency response. We will communicate the time and location of this Information Session at a later date.

North Slope South Slope

Mackenzie River

Proposed Line 21 segment replacement (HDD) ~140m below river bed

*This image is not to scale

Line*This 21 isim 12”age in is diameter not to sc andale is currently located approximately 4 meters under the Mackenzie River. The Line 21 Segment Replacement Project will locate the pipeline approximately 140 meters under the Mackenzie River.

CONSTRUCTION SCHEDULE SAFETY AWARENESS Proposed Construction Construction Schedule Safety Awareness — — Safety is a core value at trucks—driving on highways • Bus crews to and from Enbridge. Safe driving and and roads in order to the construction site the safe use of the roads complete our work. where possible in your community are important to us. Our focus is As a condition of the NEB • Actively communicate to make sure that our work is approval, Enbridge is with the local community done safely, and that Project required to develop a Traffic on any disruptions to personnel are using the roads Management Plan, including normal traffic patterns in a safe manner. a work plan to address any community impacts due to • Pay strict adherence to While most of the increased barge and water mandated noise limits construction work for taxi traffic and increased • Install and maintain the Line 21 Segment traffic and heavy equipment proper signage at work Replacement Project will traffic. sites, road and temporary take place on the existing access crossings right-of-way, you can still Traffic safety and mitigation expect to see an increase of measures will also include: • Build protective traffic for Project activities • Move heavy equipment structures to prevent March to May 2018 May to October 2018 over the next few months— across roads during damage to road surfaces including heavy-haul off-peak hours and facilitate equipment Pre-Construction Activities – March 2018 • South Camp Set-up (mid- to late May 2018) vehicles, buses, and crew and truck crossings • Transporting mats for storage • Preparation of North Work Site and North • Transportation of camp buildings Camp Set-up (mid-June 2018)

Winter Construction – mid-March 2018 • HDD drilling (July to September 2018) to May 2018 • Hydrotest newly-installed pipeline segment • Construction of matted access road (August 2018 to Septemer 2018) within the existing right-of-way • Decommissioning activities, such as filling • Installation of clear span bridge at the decommissioned pipe segment with Manners Creek grout (mid-September 2018)

• Clearing of temporary work spaces • Demobilization of North Work Site and • Preparation of South Work Site North Camp (mid- to late September 2018) • Demobilization of South Work Site and South Camp (October 2018)

Line 21 Segment Replacement Project / Spring 2018