Project Description - Port of Vancouver · Project Description 175 Duncan Street, New Westminster, BC . 307071-01144-00-EN-REP-0003_R1.docx . Advisian 7 . Table 2-1 Construction Activities

Project Description 175 Duncan Street, New Westminster, BC

14 August 2018

307071-01144 – 00-EN-REP-0003

Advisian Suite 500, 4321 Still Creek Drive Burnaby, BC V5C 6S7 CANADA Phone: +1 604 298 1616 Facsimile: +1 604 298 1625 www.advisian.com

© Copyright 2018 WorleyParsons Canada Services Ltd.

Anthem Duncan Developments Ltd. Project Description

175 Duncan Street, New Westminster, BC

307071-01144-00-EN-REP-0003_R1.docx Advisian ii

Contents 1. Introduction ................................................................................................................................................................................... 1

2. Construction Activities ............................................................................................................................................................... 3

3. Schedule ........................................................................................................................................................................................ 13

4. Other Permitting Requirements ........................................................................................................................................... 14

5. References .................................................................................................................................................................................... 15

Figures

Figure 1-1 Site Location .................................................................................................................................................................. 2

Figure 2-1 Habitat Classifications, Risk Management Areas, and Dike Footprint ................................................... 4

Figure 2-2 Miscellaneous Debris Fronting Project Site ...................................................................................................... 5

Figure 2-3 Condition Rating Scale - On-Site Trees.............................................................................................................. 6

Photographs

Photo 2-1 View Depicting the Concrete Retaining Wall to be Removed ................................................................ 10

Photo 2-2 Riparian Area Fronting the Site: a) West Foreshore Looking West; b) Mid Foreshore Looking West; c) East Foreshore (immediately E of RMA #3) Looking West .................................... 11

Photo 2-3 Tree(s) on a) Western Boundary (N001-N007) and b) Eastern Foreshore (Tree 943) of the Site .......................................................................................................................................................................... 12



307071-01144-00-EN-REP-0003_R1.docx Advisian iii

Tables

Table 2-1 Construction Activities Proposed to Occur in Foreshore Regions within VFPA Jurisdiction ..................................................................................................................................................................... 7

Table 2-2 Areas and Volumes of Sediment to be excavated within the Risk Management Areas and VFPA Jurisdiction ................................................................................................................................................ 9

Appendices

Appendix 1 Drawings



307071-01144-00-EN-REP-0003_R1.docx Advisian 1

1. IntroductionAnthem Duncan Developments LP (Anthem) is planning to construct a townhouse development (the Development) at 41 and 175 Duncan Street, New Westminster, British Columbia (BC), which was previously an industrial facility (the Site). The Project is located in the Queensborough neighbourhood of New Westminster, BC, on northeast Lulu Island, facing the south side of Poplar Island (49˚ 11.475’N, 122˚ 55.829’W, see Figure 1-1). Lulu Island and Annacis Island (south of Lulu) are between the north and south arms of the Fraser River.The following further construction activities (the Project) could affect land or water within VFPA jurisdictionand are described in this Project Description:

1. Removal of Foreshore Structures: Demolition of remaining marine structures and debris removal.

2. Sediment Remediation: soil remediation works within retained areas on the foreshore.

3. Construction of the foreshore dike including a ramp on the western edge (dike footprint is outside ofVFPA jurisdiction).

4. Removal of trees and vegetation for both the townhouse development and dike construction

The VFPA has indicated that these activities will require a Category C Permit.

The demolition of existing structures that were not embedded in sediment and the removal of piles were permitted by the VFPA (Demolition Works) (VFPA, 2017, Permit No. 16-154), and was completed in Fall 2017. These works will not be discussed further in this Project Description (PD)

Anthem plans to undertake the Project under a single construction contract.

Poplar Island

Fraser River

122°55'0"W122°56'0"W

49°12'0"N

5050005450000

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USER NAME: kenneth.w.ritchie

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FILE LOCATION: U:\YVR\307071\01144_AP_DuncanDike\10_Eng\16_Geomatics\01_Mxd\CEMP\Sediment_Remediation_and_Dike_Construction\Contractor_CEMP\2018-07-24_Figure1-1_Location.mxd

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"This drawing is prepared for the use of our customer as specified in the accompanying report. WorleyParsons Canada Ltd.assumes no liability to any other party for any representations

contained in this drawing."

CUSTOMER:A SHEET

WORLEYPARSONS PROJECT No: FIG No: REV

DATE:

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Site Location

Service Layer Credits: Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community

Esri, HERE, DeLorme, MapmyIndia, © OpenStreetMap contributors, and the GIS user community

Legend

Limit of VFPA Jurisdiction

Site Location

0 100 200 30050

Metres ±

ANTHEM PROPERTIES

SITE LOCATION




2. Construction ActivitiesThe proposed construction activities are described in the following sections and summarized in Table 2-1.

The proposed foreshore dike is above the HWL, and the majority of the footprint is not within the VFPA jurisdiction.

Engineering drawings showing dike construction are provided in Appendix 1

307071-01144-00-CI-DGA-1010 – General Notes and Design Criteria

307071-01144-00-CI-DGA-1011 – Plan and Profile

307071-01144-00-CI-DGA-1012 – Lockblock Wall Elevation View

307071-01144-00-CI-DGA-1013 – Sections and Details (Sheet 1)

307071-01144-00-CI-DGA-1014 – Sections and Details (Sheet 12)

The proposed construction activities are described in the following sections and summarized in Table 2-1 with the area depicted in Figure 2-1.

kj

kjkj

Approximate location of Retaining Wall(to be removed)

1 2 3

West Foreshore Mid Foreshore East Foreshore

#A

#B

#C

#D

#E

# F

#G

See Inset for detail

943

N007 HEDGEROW

N006

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49°11'49"N

49°11'48"N

49°11'47"N

49°11'46"N

49°11'45"N

49°11'44"N

505000 505100 505200 505300

5449200

5449300

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"This drawing is prepared for the use of our customer as specified in the accompanying report. WorleyParsons Canada Ltd.assumes no liability to any other party for any representations

contained in this drawing."


Service Layer Credits: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

Lot information from City of New Westminster.VFPA Jurisdiction supplied by Port of Vancouver.

Legend

kj Tree

High High Water Level

Low Low Water Level

RAR 30m Buffer

Dike Layout

Limit of VFPA Jurisdiction

Lot Boundary (Approx.)

Risk Management

Ground Truth ClassificationBased On Survey

Low Productivity

Moderate Productivity

0 10 205

Metres ±ANTHEM PROPERTIES

HABITAT CLASSIFICATIONS,RISK MANAGEMENT AREAS AND DIKE FOOTPRINT

2-1 0

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N006

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307071-01144 0

01/08/2018

"This drawing is prepared for the use of our customer as specified in the accompanying report. WorleyParsons Canada Ltd.

assumes no liability to any other party for any representations contained in this drawing."


Service Layer Credits: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

ANTHEM PROPERTIES

MISCELLANEOUS DEBRIS

FRONTING PROJECT SITE

1

2

3 4 5

6

K.R.

V.B.

Victoria.Coutts

Typewritten Text

Victoria.Coutts

Typewritten Text

Victoria.Coutts

Typewritten Text

Victoria.Coutts

Typewritten Text

2-2




Figure 2-3 Condition Rating Scale - On-Site Trees

Source: Arbortech (2017)




Table 2-1 Construction Activities Proposed to Occur in Foreshore Regions within VFPA Jurisdiction

Project Activity

Task No.

Description Photo, Figure reference

Foreshore Location

Engineering Drawing Section

Construction Approach

Removal of Foreshore Structures

3.1A

Miscellaneous anthropogenic debris is scattered along the Site foreshore.

Other miscellaneous debris that could not be removed during the previous demolition phase will be removed, as required.

Excavators may be used where debris is embedded. Excavation is described in Item 3.2A below.

Figure 2-2 All Areas NA

Debris will be removed primarily using land-based equipment in ‘out-of-water’ tidal conditions.

If any debris is embedded, excavation around the debris will only occur in ‘out-of-water’ tidal conditions.

3.1B The primary component of the remaining demolition is the removal of the retaining wall and associated soil contained behind it that extends beyond the HWL.

Photo 2-1

Figure 2-1

Mid Foreshore Area and RMA No. 2

East of D

The soil that is landward of the retaining wall will be removed first with a land based excavator so that it will not be eroded into the marine environment. The soil will be placed in an appropriately sized truck for daily removal from Site. Soil will be disposed of at a provincially approved disposal facility (Approved Facility). The concrete retaining wall will also be removed with a land based excavator and removed by truck to an Approved Facility. The area falls within the Risk Management Area (RMA) and therefore the remaining sediments will be remediated, as per Item 3.2B, ahead of dike construction.

3.1C Removal of existing concrete surface. None Mid Foreshore Area and RMA No. 2

C Removal of the concrete surface will be done in ‘out-of-water’ tidal conditions using land based equipment.

3.1D Disposal of construction debris, structures, and soil/sediment will be managed to prevent any materials from entering the marine environment.

NA NA NA

The soil will be placed into an appropriately sized truck for daily removal from Site. Soil will be disposed of at an Approved Facility.

The concrete retaining wall will be removed with a land-based excavator and trucked from Site to an Approved Facility.

Sediment Remediation

3.2A Excavation of sediment out-of-water to 0.5 m depth.

RMA No. 1 (West Foreshore)

RMA No. 2 (Mid Foreshore)

RMA No. 3 (East Foreshore)

NA

A pad will be constructed above the HWL to facilitate access for the crane/excavator and disposal trucks.

Material will be loaded directly into sealed truck or bins for transportation to an Approved Facility.

3.2B

Keystone has conducted several sediment survey programs to identify areas below the HWL that require remediation for the dike construction. Keystone (2017) refined previously established RMAs for metals, hydrocarbons and organo-metals to provide Anthem with remediation recommendations.

Excavation or dredging will be to 0.5 m below existing grade, as per the remediation plan (Keystone 2017). Clean native material will be used to fill the excavated areas.

Figure 2-1 details the RMAs, the VFPA jurisdiction limits, and the dike footprint.

The surface area and volumes of the RMAs are provided in Table 2-2

RMA No. 1 (West Foreshore)

RMA No. 2 (Mid Foreshore)

RMA No. 3 (East Foreshore)

NA

Sediments within the RMAs will be excavated with land or marine-based equipment depending on the location and the reach of equipment. The location of equipment staging (land/marine-based) will primarily be determined by equipment reach

Marine-based excavation will occur using a spudded barge with a crane derrick and clamshell bucket.

Activity will be planned to occur at high tide when feasible. Dredged material will be placed in a sealed barge and transported to Approved Facility.

Land-based excavation will occur for soil remediation with access via




Project Activity

Task No.

Description Photo, Figure reference

Foreshore Location

Engineering Drawing Section

Construction Approach

existing roads at the Site.

3.2C Transportation and disposal of sediment. NA NA

It will be necessary to dewater and/or solidify the sediment for transportation. Dewatering would occur within the barge with water pumped into storage tanks for transport to the Approved Facility. It may be necessary to use an additive to solidify the sediment within the barge or truck. Cement is typically used for this purpose. If so, the additive will be stored and applied so that it cannot enter the Fraser River. There will be no release or discharge of water from the barge or the truck.

Foreshore Dike

3.3.1 A small volume of sediment will be excavated from within the VFPA jurisdiction to allow for the construction of the dike. The total volume is approximately 3 cubic metres (m3) of material.

Drawing No. 1013, Section D, Appendix 2.

East Foreshore, Mid Foreshore

A, B, C, D

The sediment will be excavated using land-based equipment during out-of-water tidal conditions.

Sediment will be transported by sealed barge or truck depending on method of removal (marine-based or land-based) and delivered to an Approved Facility.

Clean native material will be used to fill the excavated areas. The total volume is approximately 3 cubic metres (m3) of material.

3.3.2

Construction of dike ramp.

The ramp will be approximately 7 m long and have a 5% grade. The ramp will be used for access during construction, and will remain in place subsequent to construction.

see Drawing No 1011, west end of profile drawing

West Foreshore, East Foreshore

307070-01144-00-CI-DGA-1010

See construction Specification 5.0 of drawing 307070-01144-00-CI-DGA-1010.

Vegetation and Tree Removal

3.4A

There are trees that will be required to be cleared for both the Project and the Development, which are both within and adjacent to VFPA jurisdictional boundary of the VFPA. The existing vegetation is sparse and provides very little value as riparian habitat for the Fraser River.

An arborists report was completed in January 2017, where all trees assessed were categorized as ‘unsuitable’ (Figure 2-3 for ratings).

Tree 943 within VFPA jurisdiction N001 – N007 – outside of VFPA and along the western boundary of the Site.

Photo 2-2 (vegetation),

Photo 2-3 (trees)

East Foreshore, RMA 3

NA Vegetation and trees will be removed using land based equipment




Table 2-2 Areas and Volumes of Sediment to be excavated within the Risk Management Areas and VFPA Jurisdiction

Risk Management Area

Constituent of Concern Surface Area (m2)

Volume (m3)

1 Organo-metal: Tributyltin 180 90

2

Metals: arsenic, copper, lead, mercury, zinc

PAHs: acenaphthene, anthracene, benzo(a)anthracene, benzo(a)pyrene, chrysene, fluoranthene, fluorene, phenanthrene, pyrene

Organo-metal: Tributyltin

1,604 802

3

Metals: arsenic, copper, lead, mercury, zinc

PAHs: acenaphthene, anthracene, benzo(a)anthracene, benzo(a)pyrene, chrysene, fluorene, phenanthrene, pyrene

719 360

Total 2,503 1,252

Source: Keystone (2017)




Photo 2-1 View Depicting the Concrete Retaining Wall to be Removed




Photo 2-2 Riparian Area Fronting the Site: a) West Foreshore Looking West; b) Mid Foreshore Looking West; c) East Foreshore (immediately E of RMA #3) Looking West




Photo 2-3 Tree(s) on a) Western Boundary (N001-N007) and b) Eastern Foreshore (Tree 943) of the Site




3. Schedule The Project is planned to commence in the 2019-2020 least risk season window (beginning June 2019), and is expected to be completed within four to six months. All works are planned to be completed within DFO’s recommended least-risk work windows (June 16 to February 28) (DFO 2014: Area 28 Vancouver: Fraser River Estuary [Oak Street Bridge/George Massey Tunnel to Mission Bridge]) (DFO, 2014).

The sediment remediation is expected to only require a total of three to four days of effort, based on the small volume of material to be excavated and/or dredged. Similarly, the removal of the soil and retaining wall that extends into the VFPA jurisdiction is expected to be a total of three to four days and will be scheduled to coincide with the construction of the related section of dike. These activities may not be continuous, i.e. may be spread over a longer period, depending on coordination with other components of construction and accessibility, such as tidal restrictions.

Construction activity is anticipated to be scheduled between 7:00 a.m. and 8:00 p.m. on weekdays and 9:00 a.m. and 6:00 p.m. on a.m. Saturdays, conforming to the New Westminster Construction Noise Bylaw No. 6063, 1992 (City of New Westminster, 1992) and to the Port Authority’s standard work hours (Port of Vancouver, 2018). The Contractor will apply for a Request for Construction Noise Bylaw Exemption in the event it is required for works dictated by tidal cycles.




4. Other Permitting Requirements In addition to the VFPA permit, the following regulatory components are planned for the Project:

Minor works or permitted work under the Navigation Protection Act. Anthem will liaise with Transport Canada.

A self-assessment under the Fisheries Act.




5. References Arbortech (2017) Tree Management Report For Development Application Purposes. Proposed Townhouse

Development. 175 Duncan Street, New Westminster. January 18, 2017 19p

DFO. (2014). Projects Near Water: British Columbia Marine/Estuarine Timing Windows for the Protection of Fish and Fish Habtat – South Coast and Lower Fraser Areas. Available at: http://www.dfo-mpo.gc.ca/pnw-ppe/timing-periodes/bc-s-eng.html#area-28. Accessed: January 2018.

Keystone (Keystone Environmental Ltd.), 2017. Draft #1 (December 21 2017) Recommended Sediment Management Areas VFPA Water Lot – 177 Duncan Street, New Westminster, BC. Project No. 13008. 41p.

Port of Vancouver. (2018). Projects and Environmental Review – Guidelines – Request to Conduct Construction Outside Regular Work Hours. February 2018. Available at: https://www.portvancouver.com/wp-content/uploads/2018/02/2018-2-15-FINAL-Construction-Outside-of-Regular-Work-Hours-Guideline_CheckboxForm.pdf Accessed: April 2018.

VFPA (Vancouver Fraser Port Authority), 2017. Anthem Duncan Developments LP. Vancouver Fraser Port Authority Project and Environmental Review Report and Permit. Permit Number: 16-154. Date of Approval: May 12, 2017. Date of Expiry: February 28, 2018.

http://www.dfo-mpo.gc.ca/pnw-ppe/timing-periodes/bc-s-eng.html#area-28

http://www.dfo-mpo.gc.ca/pnw-ppe/timing-periodes/bc-s-eng.html#area-28

https://www.portvancouver.com/wp-content/uploads/2018/02/2018-2-15-FINAL-Construction-Outside-of-Regular-Work-Hours-Guideline_CheckboxForm.pdf





Appendix 1 Drawings

Documents

Project Description - Port of Vancouver · Project Description 175 Duncan Street, New Westminster, BC . 307071-01144-00-EN-REP-0003_R1.docx . Advisian 7 . Table 2-1 Construction Activities