Tracking Number: 100286633 | Version 1.0 | Submitted Date: (waiting for outstanding consent forms and/or payment) Page 1 of 5

Change Approval and Notification (Changes In andAbout a Stream)

Tracking Number: 100286633

Applicant InformationIf approved, will the authorization be issued to an Individual or Company/Organization?

Company/Organization

What is your relationship to thecompany/organization?

Employee

APPLICANT COMPANY / ORGANIZATION CONTACT INFORMATIONPlease enter the contact information of the Individual/Organization who is acting on behalf of the applicant.

Name: British Columbia Hydro & Power Authority FW/2019Doing Business As:Phone: 604-699-5178Fax:Email: alex.gray@bchydro.comBC Incorporation Number:Extra Provincial Inc. No:Society Number:GST Registration Number:Contact Name: Michael McArthurMailing Address: 9th Floor-1111 West Georgia Street

Vancouver BC V6E 4M3

CORRESPONDENCE E-MAIL ADDRESSIf you would like to receive correspondence at a different email address than shown above, please provide the correspondence emailaddress here. If left blank, all correspondence will be sent to the above given email address.

Email: Karen.vonmuehldorfer@bchydro.comContact Name: Karen von Muehldorfer

ELIGIBILITYPlease answer the following questions related to your Change Approval/Notification.

Question Answer WarningIs this application to support oil and gas activity that is being

authorized by the Oil and Gas Commission?No

TECHNICAL INFORMATION

GOVERNMENT AND FIRST NATION FEE EXEMPTION REQUEST

Do you belong to, are you applying on behalf of, or are you:• A provincial government ministry• The Government of Canada• A First Nation for water use on reserve land• A person applying to use water on Treaty Lands• A Nisga'a citizen• An entity applying to use water from the Nisga'a Water Reservation?

No

APPLICATION BY GOVERNMENTPlease indicate if you are someone who works in the government OR you are working on behalf of the government.

Are you, or are you applying on behalf of, agovernment entity?

No

Tracking Number: 100286633 | Version 1.0 | Submitted Date: (waiting for outstanding consent forms and/or payment) Page 2 of 5

TYPE OF WORKSPlease select the type of Notifications/Approvals you want to apply for as part of this application.

Please select the type of worksto be undertaken:

Notification Road Crossing Culvert - Construction / Maintenance / Removal Clear Span Bridge - Construction / Maintenance / Removal Pipeline Crossing – Construction / Maintenance Dry Hydrant – Construction / Maintenance Pier, Wharf, (including docks) – Construction / Maintenance / Removal Cutting of annual vegetation in a stream channel Dike or Erosion Protection Works - Repair / Maintenance Storm Sewer Outfalls – Construction / Maintenance Control of Eurasian Watermilfoil or other invasive aquatic vegetation Ice Bridge / Winter Ford or Snowfill - Construction / Maintenance Maintenance of minor and routine nature by a public utility Removal of a beaver dam (as authorized under the Wildlife Act) Construction of a temporary ford Construction of a temporary diversion around a worksite

Approval:

Bank Erosion Protection Bridge (other than clear span) - Construction / Maintenance / Removal Stream Diversion Large Debris Removal by machine - Plan required Gravel removal Other

Please note that the ultimate decision whether this constitutes a Notification or a Change Approval lies with the Province of BritishColumbia

SITESClick on the Add Sites button to add one or more sites.

SITE

Location ID: Highway 29 Bridge Replacement

STREAM

Name of the Stream: Halfway RiverSource Flows Into: Peace River

PROPOSED WORKS

Detailed Description of Works: Instream works for pier construction as part of highway realignment bridgecrossing over the Halfway River. See attached Descriptions of Activities for fulldetails.

Footprint of Project: 162 m2

PROPOSED TIMING FOR WORKS

Start Date: Aug 1, 2019End Date: Dec 31, 2021Is the proposed timing within the approved

regional timing window?No

If works are proposed outside the listed windows the proponent must engagea qualified professional to assess species and habitats present and determine ifa site specific plan can be developed to ensure compliance with the Fisheries

Tracking Number: 100286633 | Version 1.0 | Submitted Date: (waiting for outstanding consent forms and/or payment) Page 3 of 5

Act

Reason to do work outside of approvedtiming window:

The least risk work window for protection of fall and spring spawning fishbegins in mid-July, however flows in the Halfway River may be elevated prior toAugust, and hence in-channel works around Pier 11 have been planned tocoincide with the summer low flows. Due to the amount of constructionrequired, the in-channel works will need to extend beyond the end of the workwindow (mid August).

LOCATION OF WORKS

Provide a legal description of the land(s)where works are proposed:

Unsurveyed (theoretical) Crown Land, the Peace River and the beds and shoresof the Peace River lying within Section 29 Township 83 Range 22 West of The6th Meridian Peace River District

Geographic Coords of Works: 56.2216700, -121.4422200Photo of Works Location:

LAND OWNERSHIP AT THE WORKS

Land Ownership: Applicant owns land Land is Crown Land but applicant has tenure Land is Crown Land but tenured to Ministry of Transportation A third Party owns the land but the applicant has lease or tenure A third Party owns the land but applicant has written consent Land is Crown Land but the applicant does not have a tenure

Land Tenure or Mine Tenure Number: LOO Licence #816077

LOCATION INFORMATION

LAND DETAILS

DRAWINGSA Drawing to Scale is required that meets the Application Drawing Standards. Choose one of the options below to submit the requiredmap/drawing.

Additionally, it is recommended that you provide a topographical map showing the general location of the property where the water isproposed to be used and the works constructed in relation to nearby communities, highways, railways and other water sources.

(this additional map will not be necessary if your Drawing to Scale is provided using the Geomark Service or a spatial file such as .KML or.KMZ)

I have created my map(s) using my own Geographic Information System (GIS)SPATIAL FILES

Do you have a spatial file from your GIS system? You can upload it here.

NOTE: If uploading a .shp, please ensure that it is a polygon that has been projected in BC Albers in NAD83 format.

Description FilenameDBF file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

KMZ file showing footprint of inchannel bridge works. HalfwayRiver_InChannelFootp...

PRJ file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

Tracking Number: 100286633 | Version 1.0 | Submitted Date: (waiting for outstanding consent forms and/or payment) Page 4 of 5

SBN file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

SBX file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

SHP file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

SHX file for the bridge instream works footprint. HalfwayRiverBridge_In_Chann...

ATTACHED DOCUMENTS

Document Type Description FilenameOther Description of Activities, including maps and drawings Description-of-Activities-a...

PRIVACY DECLARATIONPRIVACY NOTE FOR THE COLLECTION, USE AND DISCLOSURE OF PERSONAL INFORMATIONPersonal information is collected by FrontCounter BC under the legal authority of section 26 (c) and 27 (1)(a)(i) of the Freedom ofInformation and Protection of Privacy Act (the Act). The collection, use, and disclosure of personal information is subject to the provisions of the Act. The personal information collected byFrontCounter BC will be used to process your inquiry or application(s). It may also be shared when strictly necessary with partneragencies that are also subject to the provisions of the Act. The personal information supplied in the application package may be used forreferrals or notifications as required. Personal information may be used by FrontCounter BC for survey purposes.For more informationregarding the collection, use, and/or disclosure of your personal information by FrontCounter BC, please contact FrontCounter BC at1-877-855-3222 or at:FrontCounter BC Program DirectorFrontCounter BC, Provincial Operation441 Columbia StreetKamloops, BC V2C 2T3 Check here to indicate that you have read and agree to the privacy declaration stated above.

REFERRAL INFORMATIONSome applications may also be passed on to other agencies, ministries or other affected parties for referral or consultation purposes. Areferral or notification is necessary when the approval of your application might affect someone else's rights or resources or those of thecitizens of BC. An example of someone who could receive your application for referral purposes is a habitat officer who looks after thefish and wildlife in the area of your application. This does not apply to all applications and is done only when required.

Please enter contact information below for the person who would best answer questions about your application that may arise fromanyone who received a referral or notification.

Company / Organization: British Columbia Hydro & Power Authority FW/2019Contact Name: Michael McArthurContact Address: 9th Floor-1111 West Georgia Street

Vancouver BC V6E 4M3Contact Phone: 604-699-5108Contact Email: michael.mcarthur2@bchydro.com

I hereby consent to the disclosure of the information contained in this application to other agencies, government ministries orother affected parties for referral or First Nation consultation purposes.

APPLICATION AND ASSOCIATED FEESApplication and Associated Fees: $250.00 CAD plus applicable taxes

OFFICE

Office to submit application to:

PROJECT INFORMATION

Is this application for an activity or project whichrequires more than one natural resource

No

Tracking Number: 100286633 | Version 1.0 | Submitted Date: (waiting for outstanding consent forms and/or payment) Page 5 of 5

authorization from the Province of BC?

OFFICE USE ONLYOffice File Number Project Number

Disposition ID Client Number

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Site C Clean Energy Project Description of Activities and Works Water Sustainability Act Section 11

Highway 29 – Halfway River Crossing – Construction

1. Introduction

Highway 29 is two-lane rural arterial undivided highway under the jurisdiction of the British Columbia Ministry of Transportation and Infrastructure (MOTI) that connects Hudson’s Hope to Fort St. John on the north side of the Peace River. Segments of the highway will be inundated or otherwise rendered unusable by the Site C reservoir, resulting in the need to realign approximately 30 km of existing highway at Lynx Creek, Dry Creek, Farrell Creek, Halfway River, and Cache Creek, as described in the Site C Project’s EIS Volume 1 Section 41. Construction of the Halfway River crossing segment, is planned to commence in fall 2019 and be completed by the end of 2021 or in 2022.

BC Hydro and/or its agents are requesting Water Sustainability Act Section 11 Approval to undertake works in and about stream as part of Highway 29 construction, required for the Site C Clean Energy Project (the Project). This application is for the works needed to construct a bridge pier on the right bank of the Halfway River.

This document supports the Section 11 WSA applications by providing information on existing conditions, proposed activities and works, schedule of work, access and equipment, and future use of the area. Additional applications submitted under separate cover to support the proposed highway construction works, include:

Forest Act Occupant Licence to Cut

Land Act Licence of Occupation

Mines Act Notice of Work for Peaceview Pit (permit to be removed before the end of 2019)

Water Sustainability Act Application for Short Term Use of Water (WSA s.10)

2. Existing Conditions

Channel Characteristics

The Halfway River (WSC 235-004500) is a 7th order stream that flows into the Peace River. Located at ~1,200m upstream of Halfway River confluence is the proposed bridge crossing location. The 12 km reach where the bridge crossing is located was assessed to have a 9.2/20.1/70.7% riffle/pool/run habitat distribution and 180 ha of habitat. The instream works would be located within riffle-pool habitat, of which there is estimated to be 53 ha of similar habitat in the same reach. At the highway crossing alignment, the average channel width is ~98m and has a 0.5% gradient. The location of the instream works is on the right bank, extending ~14m into the channel, as measured from the high water mark.

Flows in the Halfway River are at seasonal lows during the November – April period and peak flows typically occur in the June – July period.

1 BC Hydro. 2013. Site C Clean Energy Project Environmental Impact Statement. Dated January 25,

2013; Amended August 2, 2013. Volume 1: Introduction, Project Planning, and Description. Available

from: http://www.ceaa-acee.gc.ca/050/documents_staticpost/63919/85328/Vol1_Introduction_etc.pdf

2019-04-29

Fish Use

Published river studies have reported fish and fish habitat assessments in the lower Halfway River between 2008 and 20122. The river section adjacent to the proposed bridge pier and abutment construction work functions as rearing and spawning for sucker and minnows as well as rearing for juvenile Mountain Whitefish and Bull Trout foraging habitat3.This river section has a more general function of providing a migratory habitat for fish moving between the Peace River and further upstream in the Halfway River and its tributaries.

3. Description of Work

The instream works are in support of construction of a pier (Attachment A) with its footprint in the Halfway River. Pier 11 is one of 12 piers that would be required to support the 2 lane highway bridge (1,060m in length). Each pier is comprised of eight concrete-filled steel piles (1,219mm in diameter) that are placed into bedrock.

The Pier 11 work requires construction of a concrete pile cap (14m wide, 2.5m above existing ground elevation). The pile cap represents ~14% of the bankful channel width. Riprap will be placed around Pier 11 for scour protection, with top of the rip rap being at the existing ground elevation (Attachment B, General Arrangement Sheet 4). This riprap would be a permanent feature and left in place. The contractor is expected to require a temporary granular rock work pad to be constructed in the low flow period adjacent to Pier 11 to allow machine access (see Attachment C).

Once constructed, the new bridge will have the hydraulic capacity to pass flows which exceed the 1 in 200 year peak instantaneous flow, in accordance with the Water Sustainability Regulation.

Location

The coordinates of the Halfway River Project Site is 56.22167 N, 121.44222 W. This site is located ~50km east of Fort St. John and ~40km southwest of Hudson’s Hope. The proposed bridge is located approximately 560m upstream of the existing Highway 29 bridge.

Instream Footprint & Effects to Fish & Fish Habitat

The Pier 11 concrete pile cap has a permanent instream footprint of 162m2. The permanent ripap area around Pier 11 (2,160 m2, Attachment B, General Arrangement Sheet 4) represents a channel bed habitat alteration and hence is not considered to be an instream footprint. The riprap would continue to support the existing habitat functions for this river section such as migration and rearing. The granular work pad is estimated to have a temporary footprint area of 2,160 m2 due it being placed above the existing channel bed elevation. This work pad is anticipated to be removed during a period that avoids high flow river conditions.

The present habitat function in the Halfway River channel areas that are near the work area are expected to continue with minimal change during construction. A QEP self-assessment of

2 Golder Associates, Technical Memorandum prepared for BC Hydro, “Fish and Fish Habitat Assessments

3 Site C Environmental Impact Statement, Volume 2, Section 12.4.1.1.

2019-04-29

predicted effects to fish and fish habitat will be provided to representatives from Fisheries and Oceans Canada and FLNRO prior to commencement of instream works.

4. Legal Description / Tenure

The proposed instream works for pier 11 are location on land with the following description:

Unsurveyed (theoretical) Crown Land, the Peace River and the beds and shores of the Peace River lying within Section 29 Township 83 Range 22 West of The 6th Meridian Peace River District

5. Schedule of Proposed Works

Works within the riparian area are scheduled to begin as early as August 2019 and construction is expected to be completed by the end of 2021 or, potentially, 2022. Because of the project schedule for completing all the segments of the Highway 29 realignment, the Halfway bridge works are planned to take place on a year-round basis, with the instream works around Pier 11 anticipated to be in place between August and April. The least risk work window for protection of fall and spring spawning fish begins in mid-July, however flows in the Halfway River may be elevated prior to August, and hence in-channel works around Pier 11 have been planned to coincide with low flow periods. Due to the amount of construction required, the in-channel works will need to extend beyond the end of the least risk work window (mid-August).

6. Access

Construction equipment access to the Project corridor will be by way of existing tote roads from Highway 29 and construction of temporary tote roads. The tote roads will follow existing accesses or be built by the construction contractor.

7. Environmental Management and Monitoring

Environmental protection during bridge pier construction and associated highway construction will comply with the Highway 29 Environmental Management Plan (EMP) as well as Contractor’s Environmental Protection Plan (EPP). A copy of the EMP is provided with this Section 11 Approval Application, however the EPP has not been drafted at the time of this application. A copy of the EPP will be provided to FLNRO ahead of the bridge works commencing. Environmental Requirements described in Section 2.1 of the Site C Project’s Construction Environmental Management Plan (CEMP) provide supporting information.

Construction procedures and mitigation works to protect water flow and quality will be defined in the Contractor’s EPP, which will be prepared in advance of construction works by a Qualified Environmental Professional with expertise relevant to site preparation and construction activities. The EPP will be provided to FLNRO staff prior to work commencing.

The EPP will describe measures to [1] protect water quality (including containment of erodible material generated during construction), [2] avoid impacts on fish and fish habitat, and [3] comply with existing environmental Best Practices.

The following mitigation measures apply to all in-channel works and will be implemented, as appropriate.

Construction activities within the stream channel are anticipated to occur during the period when the streams are at low flow. However, if the stream is flowing at the time of instream activities, the Contractor will isolate the work area so as to convey clean stream water around the construction zone. This system will be in place and fully functioning for the duration of the period in which it is required.

2019-04-29

If the stream is flowing at the time of the instream activities, erosion and water quality protection measures will be installed as described in the Contractor’s Erosion and Sediment Control Plan (ESCP). This may include the installation of dams upstream and downstream to isolate the construction zone.

Suspended sediment (i.e. contaminated water) will be contained to prevent release to the stream channel. The methods for containment will be appropriate to the site works and developed in consideration of the Contractor’s work plan.

If generated, sediment-laden water will be pumped from the construction site to prevent release to the river. If an appropriate site is identified, contaminated water may be pumped to an upland settlement area to allow for dispersal and infiltration. If an appropriate nearby upland location is not available, contained contaminated water may be hauled off site for disposal to a suitable location. Alternatively, collected water may be treated on site, for example, by settlement in a portable baffled water treatment container, and released back to the stream provided it meets water quality objectives as outlined in the project CEMP, and provincial water quality guidelines.

Isolation from flowing water during the curing of cast-in-place concrete used for bridge construction or other activities that require concrete placement. This isolation will be for a minimum period of 72 hours to ensure there is no discharge of contaminated water to the stream that is toxic to aquatic organisms.

Fish salvage of the in-channel areas isolated from flowing water (e.g. water inside a cofferdam around Pier 11 pile construction zone).

Works will be audited by an independent environmental monitor retained by BC Hydro. Construction activities and Halfway River water quality will be routinely monitored by the Contractor’s environmental monitor. The contractor’s monitoring plan will comply with Section 22 (Water Quality Management Plan) of the Highway 29 EMP .

8. Future Use

Once the new bridge and associated realigned Highway 29 roadworks are completed, vehicle traffic will be permanently routed along the new highway.

Closure

Michael McArthur, MSc, RPBio. Senior Environmental Coordinator Site C Clean Energy Project

2019-04-29

Attachment A Overview Figure of Halfway River Hwy 29 Bridge Crossing

1016-N11-00379-1 R 0Mar 5, 2019Cons truction of the Site C Clean Energy Project is s ubject to required regulatory and permitting approvals.

Date DWG NO

Map Notes:1. Datum: NAD832. Projection: UTM Zone 10N3. Base Data: Province of B.C.4. Imagery: Main Map: ESRI Online Basemapping. Inset Map: LiDAR Acquisition 2015.5. Proposed reservoir area (461.8m maximum normal elevation) from Digital Elevation Models (DEM) generated from LiDAR data acquired July/August, 2006.6. Reservoir elevation 461.8 m does not consider realignment.

1:10,000

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© BC Hydro 2019 – all rights reserved. This map is for information purposes only and accuracy is not guaranteed.

Halfway

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Peace R

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Highway 29 Realignment:Halfway River

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LegendHighway 29 RealignmentProposed Revised BridgePierAbutmentRipRap

Maximum NormalReservoir Level (461.8 m)!.

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Index

Taylor

Hudson's Hope

Fort St. John

General arrangement of Highway 29 realignment segment at Halfway River,

per revised bridgeImagery

See Inset - Halfway River Bridge

0 250 500125m

Halfway River

Pier 1Pier 2

Pier 3

Pier 4

Pier 5

Pier 6

Pier 7Pier 8

Pier 9

Pier 10

Pier 11Pier 12 East

Abutment

West Abutment

Halfway River Bridge0 200100 m

Area Within In Channel Footprint Area (m2) Pile Cap for Pier 11 163Riprap for Pier 11 1,324

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Attachment B Halfway River Hwy 29 Bridge

General Arrangement Drawings

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Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

PRELIMINARY

NOT ISSUED FOR CONSTRUCTION

Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

PRELIMINARY

NOT ISSUED FOR CONSTRUCTION

Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

PRELIMINARY

NOT ISSUED FOR CONSTRUCTION

Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

PRELIMINARY

NOT ISSUED FOR CONSTRUCTION

C

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Northern Region

Ministry of TransportationBRITISHCOLUMBIA & Infrastructure

PRELIMINARY

NOT ISSUED FOR CONSTRUCTION

2019-04-29

Attachment C Pier 11 Construction Access Pad and Permanent Riprap Design Drawing

6.000

1

21.000

2.200

1.000

TEMPORARY OVER-STEEPENED FACE TOALLOW CONSTRUCTION OF FORMWORK

POLY-WRAPPEDBULK- BAGISOLATIONBERM

COMPACTED GRANULAR FILLFOR EQUIPMENT ACCESS

CONTINGENCY RIPRAP PROTECTIONIN THE EVENT OF A HIGH FLOW EVENTDURING CONSTRUCTION OF PIER 11

RAISED PILE CAP OPTION

PIER 11

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LFW

AY

RIV

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6.000

9.000

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PIER 12POLY-WRAPPED BULK-BAG ISOLATION BERM

TRACK-COMPACTEDEQUIPMENT ACCESS PAD

PIER 11

CONTINGENCY RIPRAP

27 Mar 201930 Gostick PlaceNorth Vancouver, BC V7M 3G3CanadaOffice: 604.980.6011Fax: 604.980.9264www.nhcweb.com

PROJECT NUMBER

FIGURE NO.

REVISIONSHEET SIZE

DESIGNED BY

K L

DRAWING NUMBER

REVISIONS

DRAWN BY

CHECKED BY

DATE

DRAWING INFORMATION

D (22" x 34")

SITE C HYDRO PROJECTHIGHWAY 29 RELOCATION - HALFWAY RIVER BRIDGE

3002619

3002619-7.2

7.2B

DJG

KEH

DJG

A 26 FEB 2019 ISSUED FOR INFORMATIONB 27 MAR 2019 ISSUED FOR INFORMATION, PILE CAP AND PAD ELEV'S REV'D

PLAN VIEW - PIER11 CONSTRUCTION ACCESS PADSCALE: 1:1000

ELEVATION - PIER 11 CONSTRUCTION ACCESS PADSCALE: 1:250

C (11" x 17")

NOTES:1. ALL DIMENSIONS ARE IN METRES2. EXPOSED PILE CAP BASED ON 50% DETAILED BRIDGE DESIGN BY WSP (JAN 25, 2019)3. THE TEMPORARY CONSTRUCTION ACCESS PAD LAYOUT PRESENTED ABOVE

ASSUMES THE PAD WILL ONLY BE IN PLACE DURING THE PERIOD AUGUST - MARCH(HISTORICAL LOW FLOW PERIOD)

4. TOTAL INSTREAM FOOTPRINT (INCLUDING ISOLATION BERM) IS 2,980m2

PIER 11 CONSTRUCTON ACCESS PADPLAN AND SECTION