FINANCE, RISK AND SUPPLY CHAIN MANAGEMENT Supply …Office, City of Vancouver, 453 West 12th Avenue, Vancouver, British Columbia, Canada, V5Y 1V4. Envelopes submitted by courier or

FINANCE, RISK AND SUPPLY CHAIN MANAGEMENTSupply Chain Management

City of Vancouver, Finance, Risk and Supply Chain Management 453 West 12th Avenue Vancouver, British Columbia V5Y 1V4 Canada tel: 604.873.7263 fax: 604.873.7057 vancouver.ca

June 14, 2019

INVITATION TO TENDER “ITT” NO. PS20190704 PROVISION OF CONTRACTOR SERVICES FOR EARTHFILL DIKE WORKS

ADDENDUM NO. 1

RE: APPENDIX 3 – SPECIFICATIONS & DRAWINGS – DRAWING LIST

Please add the following drawings (attached):

Parkland White Pines Development Ltd. dated Nov 20, 2013 (8 pages) Kinross Outfall drawing AC62-2BC-504 (1 page)

RE: APPENDIX 3 – SPECIFICATIONS & DRAWINGS – GEOTECHNICAL REPORTS

Please add the following reports:

Fill Materials for Flood Management Structures (R1) - East Fraser Lands Area 2 Flood Protection (11 pages), dated June 28, 2018 (attached)

Geotechnical Exploration – Factual Report - East Fraser Lands Area 2 Flood Protection (113 pages), dated October 17, 2018 NOTE: This report is 16Mb so please email Philip at [email protected] to receive the report via email.

This addendum must be completed, and attached to your Proposal form.

If you have already submitted your Tender, this addendum shall be submitted to the Purchasing Services Office, City of Vancouver, 453 West 12th Avenue, Vancouver, British Columbia, Canada, V5Y 1V4. Envelopes submitted by courier or otherwise in-person should be delivered to: Supply Chain Management, 453 West 12th Avenue, 4th Floor (Bid Submission Box) Vancouver City Hall, Vancouver, British Columbia, in an envelope clearly marked “Addendum No. 1 to Invitation to Tender No. PS20190704: Contractor Services for Earthfill Dike Works before the closing time of 3:00:00 pm, Wednesday, June 26, 2019.

NAME OF VENDOR

Signature of Authorized Signatory

Date Philip Lai Buyer II

5th Floor, East Asiatic House1201 West Pender StreetVancouver BC Canada V6E 2V2

www.pwlpartnership.com

T 604.688.6111F 604.688.6112

partnership

PWL Partnership Landscape Architects Inc

REVISIONS AND ISSUES

DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE

Copyright. All rights reserved. Reproduction in whole or in part is prohibited. This drawing as aninstrument of service is the property of the Consultant and may not be used in any way without thewritten permission of this office.

PROJECT NO.

REVIEWED

PLOTTED

NO. DATE DESCRIPTION

1161 EFL Area 2BC Details.vwx

DETAILS

EAST FRASERLANDSAREA 2B / 2C STREET

AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:03 AM

L5.01

2012/07/12 ISSUED FOR 100%DESIGN SUBMISSION

2013/11/20 ISSUED FOR 100% CITY REVIEW



T 604.688.6111F 604.688.6112

partnership


L5.01


DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED



DETAILS


AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:07 AM

L5.02





T 604.688.6111F 604.688.6112

partnership



DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED



DETAILS


AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:13 AM

L5.03





T 604.688.6111F 604.688.6112

partnership



DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED



DETAILS


AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:18 AM

L5.04





T 604.688.6111F 604.688.6112

partnership


L5.04


DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED



DETAILS


AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:22 AM

L5.05





T 604.688.6111F 604.688.6112

partnership



DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED



DETAILS


AMB CS

1161

NOVEMBER 15, 2010

11/19/13 at 9:51:26 AM

L5.06





T 604.688.6111F 604.688.6112

partnership



DRAWING TITLE

PROJECT

DRAWN

DATE

FILE NAME

DRAWING

NORTH SCALE


PROJECT NO.

REVIEWED

PLOTTED


1161 EFL Area 2BC Plan.vwx

Street Layout Plan

East Fraserlands - Area 2B/CStreetscape Design

AMB CS

1161

October 31, 2011

11/19/13 at 9:53:08 AM

1:200

L 1.01



2012/02/29 ISSUED FOR TENDER

2012/05/18 Issed for Review

2012/05/01 ISSUED FOR CONSTRUCTION

2012/06/01 FINAL DRAWINGS APPROVED BY COV



T 604.688.6111F 604.688.6112

partnership


275 – 3001 Wayburne Drive, Burnaby, BC V5G 4W3, Canada T: 604.874.1245 F: 604.874.2358 ● www.exp.com

ISO

9001:2015 REGISTERED

June 28, 2018 Reference: VAN-00244166-A0 Kerr Wood Leidal Associates Ltd. 200 - 4185A Still Creek Drive Burnaby, BC V5C 6G9 Email: [email protected] Attention: Andrew Kolper, P.Eng., Stormwater Project Engineer Re: Fill Materials for Flood Management Structures (R1)

East Fraser Lands Area 2 Flood Protection Vancouver, BC

Dear Sir: 1.0 INTRODUCTION This memorandum provides EXP Services Inc.’s (“EXP”) geotechnical recommendations on the type and zoning of fill in the Flood Management Structure (“FMS”) embankments in Area 2 of the East Fraser Lands Flood Protection Project. EXP’s scope of services is limited to the geotechnical aspects of flood protection for the FMS. The geotechnical-related aspects of the design of surficial elements, such as paving and park landscaping is understood to be outside EXP’s scope of services for this project; however, the details of these elements should be provided to EXP for review. Reference information for this memorandum includes:

• EXP Services Draft Geotechnical Report, dated May 2, 2018.

• KWL Draft Preliminary Design Drawings, dated March 2, 2018.

• US Army Corps of Engineers (USACE), 2000. Design and Construction of Levees. Seepage analysis was carried out using Seep/W (GeoStudio 2018, version 9.0.2, Build 15352). Sample outputs from the results of this analysis are attached in Appendix A. Zoning of fill materials was based on the results of the seepage analysis, filter compatibility and availability of local materials. 2.0 SITE DESCRIPTION / PROJECT UNDERSTANDING The site is located on the north bank of the Fraser River North Arm, extending about 600m east of Kerr St. It is understood that the site was historically an industrial site, and it is now under development, with low-rise residential buildings. Several buildings in the west of the site have been completed, and some groundworks may have taken place across the rest of the site. It is understood that the proposed FMS would be a total of about 700m in length. The FMS would mostly consist of an earth embankment, and there would also be a flood wall about 170m long. The current project proposes to raise the crest of the FMS to 4.85m geodetic elevation, and to consider a future crest rise to accommodate an additional 1m of sea level rise. The FMS would be landscaped to function as a public park.

EXP Services Inc.

Fill Materials for Flood Management Structures - East Fraser Lands Area 2 Flood Protection (R1) Vancouver, BC

Reference No.: VAN-00244166-A0 June 28, 2018

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3.0 SUBSOIL CONDITIONS The subsoil conditions are described in EXP’s Draft Geotechnical report. Typically, the site is underlain by up to about 4.0m of Sand/Silt Fill and Organic-Rich Fill, which is underlain by Organic Silt/Clay and Clayey Silt. Groundwater levels are expected to be influenced by the water levels of the adjacent Fraser River. 4.0 DESIGN WATER LEVELS For this assessment, the Designated Flood Level (“DFL”) has been considered as shown in the table below (reproduced with modification from EXP’s draft geotechnical report). An allowance for regional subsidence and local settlement of the FMS has been made to account for the settlement of the land relative to sea level.

Table 1: Designated Flood Level Elevations

Design Case Sea Level

Rise Designated Flood Level

Regional Geological Subsidence

Local Settlement

Current Equivalent Water Level

Current Proposed

FMS 1.0m 3.0m 0.2m(1) 0.05m 4.25m

Conceptual Future FMS

2.0m 3.0m 0.2m(1) 0.05m 5.25m

Notes:

1. Considers 100 years of regional geological subsidence 5.0 DISCUSSION AND RECOMMENDATIONS 5.1 Subgrade Preparation Subgrade preparation should include removal of all vegetation, grass sod and organic-rich materials. On completion of subgrade preparation, and before any fill is placed, EXP should be contacted to review the prepared subgrade. 5.2 FMS Fill Materials and Fill Zoning The recommended FMS fill materials and fill zoning are shown on Figures 1 and 2 attached. EXP recommends the use of three material types, summarized in the tables below. All fill should be placed in lifts less than 300mm thickness and compacted to at least 95% of Modified Proctor maximum dry density (MPMDD) as per ASTM D1557.

EXP Services Inc.



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Table 2: Zone 1: FMS Core Fill

Sieve Size (mm)

Percent Passing (%)

4.75 100

2.00 90 to 100

0.85 80 to 100

0.43 30 to 100

0.25 0 to 80

0.15 0 to 20

0.08 0 to 8

Table 3: Zone 2a: Filter Blanket

Sieve Size (mm)

Percent Passing (%)

75.00 100

38.00 60 to 100

19.00 35 to 80

9.50 25 to 60

4.75 20 to 40

2.36 15 to 30

1.18 10 to 20

0.60 5 to 15

0.08 3 to 10

Material to consist of crushed gravel with particles having 100% fracture count.

Table 4: Zone 2b: Gravel Drain

Sieve Size

(mm)

Percent Passing

(%)

10.00 100

5.00 70 to 100

2.50 10 to 40

1.25 0 to 10

0.08 0 to 1

These fill materials were designed following the recommendations in USACE (2000). Zones 2a and 2b are recommended for relatively narrow FMS sections with crest widths less than 30m (Figure 1), and are not required where the crest width is greater than 30m (Figure 2). The purpose of the fill materials and zones is as follows:

• Zone 1: FMS Core Fill. This material has been selected to control the flow of groundwater through the FMS, with low risk of piping.

• Zone 2a: Gravel Filter Blanket. This material has been selected to filter Zone 1 and prevent internal erosion of the FMS, from groundwater flow through the FMS.

• Zone 2b: Gravel Drain. This material has been selected to collect groundwater flowing through the foundation soils beneath the FMS.

EXP Services Inc.



- 4 -

The gravel drain has been designed considering a future FMS raise to accommodate a total of 2 m of sea-level rise. It is not required in the present FMS design, but installation at this stage may prevent rework of the landside of the FMS is future upgrades. 5.3 HDPE Perforated Drainage Pipe As shown on Figure 1, attached, a perforated High Density Polyethylene (“HDPE”) Drain Pipe is recommended within the gravel drain to prevent ponding of water on the land side of the FMS. This pipe should discharge to a suitable outlet, and should be sized to accommodate a flowrate of at least 0.2 L/s per linear meter of FMS. This drainage pipe may be omitted it ponding on the land side of the FMS is permitted. 5.4 Utilities Passing Through the FMS New utilities crossing the FMS should cross perpendicular to the FMS alignment. To minimize the risk of preferential flow paths developing around the utility ducting, they should be installed a minimum of 2m below the existing site grade. For narrow FMS sections, utility backfill below the location of future crest should consist of Zone 1 Fill Material; Zone 2b material should be used as backfill within 4m of the landside of the future crest.

Recommended Trench Backfill "Narrow" FMS Section

For wide FMS sections, a minimum 8m long zone of Zone 1 material should be used to backfill new utility trenches, placed beneath the location of the future FMS raise.

EXP Services Inc.



- 5 -

Recommended Trench Backfill "Wide" FMS Section

Where existing utilities cross the FMS alignment, the upper 1.5m of the utility trench backfill should be excavated and replaced with fill materials zoned as per new utility crossings described above. Several existing steel pipes have been observed protruding from the river bank. Given the change in use of the site, it is possible that these pipes no longer serve their original purpose and may have been disconnected or abandoned. Existing piping such as these should be examined to ensure that they do not allow flood waters to bypass the FMS. Non-return valves should be installed on pipes such as these which are still in use. Pipes which have been disconnected or abandoned should either be permanently plugged or removed from the FMS footprint.

INTERPRETATION & USE OF STUDY AND REPORT

1. STANDARD OF CARE This study and Report have been prepared in accordance with generally accepted engineering consulting practices in this area. No other warranty, expressed or implied, is made. Engineering studies and reports do not include environmental consulting unless specifically stated in the engineering report. 2. COMPLETE REPORT All documents, records, data and files, whether electronic or otherwise, generated as part of this assignment are a part of the Report which is of a summary nature and is not intended to stand alone without reference to the instructions given to us by the Client, communications between us and the Client, and to any other reports, writings, proposals or documents prepared by us for the Client relative to the specific site described herein, all of which constitute the Report. IN ORDER TO PROPERLY UNDERSTAND THE SUGGESTIONS, RECOMMENDATIONS AND OPINIONS EXPRESSED HEREIN, REFERENCE MUST BE MADE TO THE WHOLE OF THE REPORT. WE CANNOT BE RESPONSIBLE FOR USE BY ANY PARTY OF PORTIONS OF THE REPORT WITHOUT REFERENCE TO THE WHOLE REPORT. 3. BASIS OF THE REPORT The Report has been prepared for the specific site, development, building, design or building assessment objectives and purpose that were described to us by the Client. The applicability and reliability of any of the findings, recommendations, suggestions, or opinions expressed in the document are only valid to the extent that there has been no material alteration to or variation from any of the said descriptions provided to us unless we are specifically requested by the Client to review and revise the Report in light of such alteration or variation. 4. USE OF THE REPORT The information and opinions expressed in the Report, or any document forming the Report, are for the sole benefit of the Client. NO OTHER PARTY MAY USE OR RELY UPON THE REPORT OR ANY PORTION THEREOF WITHOUT OUR WRITTEN CONSENT. WE WILL CONSENT TO ANY REASONABLE REQUEST BY THE CLIENT TO APPROVE THE USE OF THIS REPORT BY OTHER PARTIES AS “APPROVED USERS”. The contents of the Report remain our copyright property and we authorise only the Client and Approved Users to make copies of the Report only in such quantities as are reasonably necessary for the use of the Report by those parties. The Client and Approved Users may not give, lend, sell or otherwise make the Report, or any portion thereof, available to any party without our written permission. Any use which a third party makes of the Report, or any portion of the Report, are the sole responsibility of such third parties. We accept no responsibility for damages suffered by any third party resulting from unauthorised use of the Report. 5. INTERPRETATION OF THE REPORT a. Nature and Exactness of Descriptions: Classification and identification of soils, rocks, geological units, contaminant materials, building

envelopment assessments, and engineering estimates have been based on investigations performed in accordance with the standards set out in Paragraph 1. Classification and identification of these factors are judgmental in nature and even comprehensive sampling and testing programs, implemented with the appropriate equipment by experienced personnel, may fail to locate some conditions. All investigations, or building envelope descriptions, utilizing the standards of Paragraph 1 will involve an inherent risk that some conditions will not be detected and all documents or records summarising such investigations will be based on assumptions of what exists between the actual points sampled. Actual conditions may vary significantly between the points investigated and all persons making use of such documents or records should be aware of, and accept, this risk. Some conditions are subject to change over time and those making use of the Report should be aware of this possibility and understand that the Report only presents the conditions at the sampled points at the time of sampling. Where special concerns exist, or the Client has special considerations or requirements, the Client should disclose them so that additional or special investigations may be undertaken which would not otherwise be within the scope of investigations made for the purposes of the Report.

b. Reliance on Provided information: The evaluation and conclusions contained in the Report have been prepared on the basis of conditions in evidence at the time of site inspections and on the basis of information provided to us. We have relied in good faith upon representations, information and instructions provided by the Client and others concerning the site. Accordingly, we cannot accept responsibility for any deficiency, misstatement or inaccuracy contained in the report as a result of misstatements, omissions, misrepresentations or fraudulent acts of persons providing information.

c. To avoid misunderstandings, exp Services Inc. (exp) should be retained to work with the other design professionals to explain relevant

engineering findings and to review their plans, drawings, and specifications relative to engineering issues pertaining to consulting services

provided by exp. Further, exp should be retained to provide field reviews during the construction, consistent with building codes guidelines

and generally accepted practices. Where applicable, the field services recommended for the project are the minimum necessary to

ascertain that the Contractor’s work is being carried out in general conformity with exp’s recommendations. Any reduction from the level of

services normally recommended will result in exp providing qualified opinions regarding adequacy of the work.

6.0 ALTERNATE REPORT FORMAT When exp submits both electronic file and hard copies of reports, drawings and other documents and deliverables (exp’s instruments of professional service), the Client agrees that only the signed and sealed hard copy versions shall be considered final and legally binding. The hard copy versions submitted by exp shall be the original documents for record and working purposes, and, in the event of a dispute or discrepancy, the hard copy

versions shall govern over the electronic versions. Furthermore, the Client agrees and waives all future right of dispute that the original hard copy signed version archived by exp shall be deemed to be the overall original for the Project. The Client agrees that both electronic file and hard copy versions of exp’s instruments of professional service shall not, under any circumstances, no matter who owns or uses them, be altered by any party except exp. The Client warrants that exp’s instruments of professional service will be used only and exactly as submitted by exp. The Client recognizes and agrees that electronic files submitted by exp have been prepared and submitted using specific software and hardware systems. Exp makes no representation about the compatibility of these files with the Client’s current or future software and hardware systems.

EXP Services Inc.



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Figures

Embankment Fill Types, FMS Crest less than 30m wide Figure 1

Embankment Fill Types, FMS Crest greater than 30m wide Figure 2

Figure 3: Sample Seepage Analysis Output Figure 3

3

1

1.0m

0.6m

Minimum 0.5m Thick

Filter Blanket

FMS-Approved Planting

With root barriers

Minimum Crest Width 4.0m

HDPE Perforated

Drainage Pipe

Gravel Drain

(Optional in this Phase of FMS design)

Topsoil Cover (by others)

Existing Grade

Conceptual Future FMS Raise

Proposed FMS Raise

1

2a

2b

Zone 1 Fill (Core)

Sieve Size (mm) % Passing

4.75 100

2.00 90 to 100

0.85 80 to 100

0.43 30 to 100

0.25 0 to 80

0.15 0 to 20

0.08 0 to 8

Zone 2a Fill (FIlter Blanket)


75.00 100

38.00 60 to 100

19.00 35 to 80

9.50 25 to 60

4.75 20 to 40

2.36 15 to 30

1.18 10 to 20

0.60 5 to 15

0.30 3 to 10

0.08 0 to 5

Material to consist of crushed gravel with particles

having 100% fracture count

Zone 2b Fill (Gravel Drain)


10.00 100

5.00 70 to 100

2.50 10 to 40

1.25 0 to 10

0.08 0 to 1

Planting in this area to be

removable in Future FMS RaiseLand Side River Side

exp Services Inc.

VAN-0244166-A0

Flood Management Structures

SCD

Kerr Wood Leidal East Fraser Lands Area 2

SCD BM 2018-06-05

FMS Crest Less than 30m Wide

NTS

FMS Embankment Fill Types

Figure 1

Reference:

Section A, KWL Area 2 Flood Management Works, Typical Sections (Draft Preliminary Design), dated March 2, 2018

1

Existing Grade

Proposed FMS Raise

Conceptual Future FMS Raise

Planting in this area to be

removable in Future FMS Raise

Zone 1 Fill (Core)


4.75 100

2.00 90 to 100

0.85 80 to 100

0.43 30 to 100

0.25 0 to 80

0.15 0 to 20

0.08 0 to 8

Land Side River Side

exp Services Inc.

VAN-0244166-A0

Flood Management Structures

SCD

Kerr Wood Leidal East Fraser Lands Area 2

SCD BM 2018-06-05

FMS Crest Greater than 30m Wide

NTS

FMS Embankment Fill Types

Figure 2

Reference:

Section B, KWL Area 2 Flood Management Works, Typical Sections (Draft Preliminary Design), dated March 2, 2018

Documents

FINANCE, RISK AND SUPPLY CHAIN MANAGEMENT Supply …Office, City of Vancouver, 453 West 12th Avenue, Vancouver, British Columbia, Canada, V5Y 1V4. Envelopes submitted by courier or