Wood Environment & Infrastructure Solutions, Kamloops, BC V2C … · 2020. 5. 1. · Wood...

Wood Environment & Infrastructure Solutions,

a Division of Wood Canada Limited

913 Laval Crescent

Kamloops, BC V2C 5P4

Canada

T: 250-374-1347

Technical Memo

To: Michael George, P.Eng.

From: Nick Felsing, P.Eng. Reviewer: David Lang, P.Eng.

Cc: Paul O’Sullivan, P. Eng. Wood File: KX13772B14.001

Date: 6 December 2019

Re: Environmental Testing for Concrete Deterioration: Highway 1 Chase Creek Road to

Chase West, Chase, BC

Introduction

Wood Environment & Infrastructure Solutions, a division of Wood Canada Limited (Wood) have been

retained by BC Ministry of Transportation & Infrastructure (BCMOTI) to undertake an additional borehole

investigation program. The scope of work for this task was described in the project brief (email

Michael George, BCMOTI /Paul O’Sullivan, Wood, (07/22/2019). Authorisation to proceed with this

assignment was provided by email (Michael George, BCMOTI /Nick Felsing, Wood 08/26/2019). The

purpose of the investigation was to provide supplementary information for geotechnical assessment of

the proposed new underpass structures. A settlement analysis for the proposed pedestrian underpass was

completed, and this is reported together with the borehole logs under separate cover. This memo

provides a summary of the fieldwork and laboratory test program undertaken to complete soil and nearby

water quality testing for evaluation of the environmental exposure to concrete.

Project Understanding

The objective of the investigation was to drill two additional boreholes at the proposed site of two new

underpass structures. The two structures under consideration are the pedestrian underpass at

L100-Line Stn., 109+70.698 and the cattle underpass at Stn., 108+14 of the Highway 1 Chase Creek Road

to Chase West project.

Included in the project brief was guidance on sampling and testing as summarised below.

• One soil sample be taken between a depth of 0.3 m to 1.2 m,

• One soil sample be taken at the groundwater table or within 1.5 m below the lowest groundwater

elevation, and

• One surface water sample be collected from all surface water bodies within 350 m of the concrete

element.

Field Program

The two boreholes were advanced on September 6, 2019 utilizing a solid-stem auger drill rig, operated by

Mud Bay Drilling Ltd. The borehole and river test locations are shown on the attached Figure 1- Site Plan.

Environmental Testing for Concrete Deterioration: Highway 1 Chase Creek Road to Chase West

Chase, BC

Wood File: KX13772B14.001 | 06 December 2019

Soil samples were retrieved as grab samples collected from the auger flights. A sample was retrieved at a

depth of 1 m below ground surface (bgs) in each borehole (BH19-01 and BH19-02). A second sample was

retrieved at a depth of 1.7 to 2.1 m below the inferred groundwater table for BH19-01 and 1.3 to 1.6 m

below the inferred groundwater table for BH19-02. These samples were taken at associated depths of

17.7 mbgs and 10.5 mbgs for BH19-01 and BH19-02, respectively.

Ground Conditions

Laboratory Testing

The four retrieved borehole samples were sent to Caro Analytical Services (Caro) in Richmond, BC for

environmental testing comprising water-soluble sulphate content and soluble chloride content in

accordance with the details in Table 1 below. A surface water sample collected from the South

Thompson River was sent to ALS Environmental (ALS) in Kamloops, BC to test for pH and sulphate content

in accordance with the details in Table 1 below.

Table 1: Scope of Laboratory Testing

Test Type Test Name Test Standard No. of

Tests

Test

Lab

Soil Testing

Chemical Water Soluble Sulfate CSA A23.2-3B / CSA A23.2-2B 4 CARO

Chemical Water Soluble Chloride CSA A23.2-4B 4 CARO

Surface Water Testing (South Thompson River)

Chemical Water soluble sulfate EPA 300.1 (mod) 1 ALS

Chemical pH APHA 4500-H pH Value 1 ALS

Discussion of Results

The results of the analytical testing conducted on water and soil samples at the site location have been

presented in Table 2 below and also included in Appendix A. The test results are intended to allow the

design engineer to assess the requirements for the appropriate type of cement to be used in construction

and the need for corrosion protection of steel reinforcing elements.

The soil materials encountered were logged in accordance with a modified version of the Unified Soil

Classification System (USCS) (Wood PLC, 2008). The soil conditions at BH19-01 consisted of sand and

gravel to 3.4 mbgs underlain by clayey silt to 9.1 mbgs underlain by sand with varying amounts of silt to

the termination depth of 19.8 m. Based on the observed moisture profile, the groundwater table was

interpreted at 15.9 mbgs, corresponding to an elevation of 345.8 m. The soil conditions at BH19-02

consisted of silty sand to 3 m, underlain by silt to the termination depth of 10.7 m. Based on the observed

moisture profile at the time of drilling the groundwater table was interpreted at 9.0 mbgs corresponding

to an approximate elevation of 345.1 m. Groundwater table elevation was measured within a previously

installed well at BHA16-02 (refer to Figure 1) on September 4, 2019 the groundwater table was measured

to be 343.9 m.

In addition to the retrieved soil samples, a surface water sample was collected from the South Thompson

River at a location within 350 m of the pedestrian underpass (refer to Figure 1).


Chase, BC


Table 2: Summary of Laboratory Testing Results

Sample

Location

Sample

Elevation

Water soluble

Sulphate in sample

(%)

Water soluble

Chloride in sample

(%)

pH

BH19-01 1.0 mbgs <0.050 <0.010 N/A

BH19-01 17.7 mbgs <0.050 <0.010 N/A

BH19-02 1.0 mbgs <0.050 <0.010 N/A

BH19-02 10.5 mbgs <0.050 <0.010 N/A

River Surface Elevation 0.005 N/A 8.17

Note: N/A = Not Applicable

The soluble sulfate content analyses for representative soil and water sample tested indicate a sulfate

concentration of 500 mg/kg (0.050 %) and 50 mg/L (0.005 %) in soil and water respectively. Comparing

the soil water-soluble sulphate content to Canadian Standards Association (CSA) Standards A23.1 for

sulphate attack potential on concrete structures, the risk for sulphate attack on concrete material is

“negligible” and the design engineer should consider this in the selection of concrete mix.

The soluble chloride content of the selected soil samples was also compared with the threshold level and

as this was less than the reporting limit of 100 mg/kg (0.010%), present negligible concrete corrosion

potential.

The pH value for the water sample was reported to be 8.17, indicating a durable condition against

corrosion. These results were evaluated using Table C1 of Building Research Establishment (BRE) Special

Digest 1 (2005). The pH is greater than 5.5 indicating the concrete will not be exposed to attack from

acids.


Chase, BC


References

Wood PLC. (2008). Geotechnical Investigation Reference Guide.

BRE (2005). Concrete in Aggressive Ground, Building Research Establishment (BRE) Special Digest 1;2005,

Third Edition, BRE Construction Division, 2005.

CSA (2018). Concrete materials and methods of concrete construction/Test methods and standard practices

for concrete, Canadian Standards Association (CSA), Standards A23.1-14/ A23.2-14., CSA Group, Reprinted

June 2018.

SurfaceWaterSampleLocation

Kam

loop

s-Sh

usw

apR

oad

Tran

s-Can

ada

Highway

Sout

h Th

omps

on R

iver

BH19-02BH19-01

N/APROJECTION:

N/ADATUM:

SITE PLAN

PROJECT:

TITLE:

REV. NO.:

PROJECT NO.:

KX13772B14

A

CLIENT: DWN BY:

CHK'D BY:

OCTOBER 2019DATE:

SCALE:

NF

NOT TO SCALE

BB

SUPPLEMENTARY SITE INVESTIGATION AND CONCRETEDETERIORATION TESTING FOR PEDESTRIAN UNDERPASS:

HIGHWAY 1 CHASE CREEK ROAD TO CHASE WESTCHASE, BC

This drawing was originally produced in colour.

FIGURE 1

Wood Environment & Infrastructure Solutionsa Division of Wood Canada Limited (Wood)

913 Laval CrescentKamloops, BC, CANADA V2C 5P4

Tel. (250) 374-1347 Fax (250) 374-2944

BC MINISTRY OF TRANSPORTATION ANDINFRASTRUCTURE

Notes:1. All locations are approximate.2. Plan provided by R.F. Binnie & Associates Ltd. drawing number 'R2-982-103', dated April 2019.3. Key map orthophoto provided by Bing Maps Aerial - © 2019 Microsoft Corporation © 2019

DigitalGlobe ©CNES (2019) Distribution Airbus DS.

Legend

Borehole Location

Surface Water Sample Location

KEY PLAN

Appendix A

Laboratory Test Results

REPORTED TO Wood E&I Solutions (Kamloops)

Kamloops, BC V2C 5P4

Authorized By:

#110 4011 Viking Way Richmond, BC V6V 2K9 | #102 3677 Highway 97N Kelowna, BC V1X 5C3 | 17225 109 Avenue Edmonton, AB T5S 1H7

1-888-311-8846 | www.caro.ca

913 Laval Crescent

Client Service Representative

Team CARO

CERTIFICATE OF ANALYSIS

Introduction:

CARO Analytical Services is a testing laboratory full of smart, engaged scientists driven to make the world a safer and

healthier place. Through our clients' projects we become an essential element for a better world. We employ methods

conducted in accordance with recognized professional standards using accepted testing methodologies and quality

control efforts. CARO is accredited by the Canadian Association for Laboratories Accreditation (CALA) to ISO

17025:2005 for specific tests listed in the scope of accreditation approved by CALA.

Big Picture Sidekicks

You know that the sample you collected after

snowshoeing to site, digging 5 meters, and

racing to get it on a plane so you can submit it

to the lab for time sensitive results needed to

make important and expensive decisions

(whew) is VERY important. We know that too.

We've Got Chemistry

It�s simple. We figure the more you

enjoy working with our fun and

engaged team members; the more

likely you are to give us continued

opportunities to support you.

Ahead of the Curve

T h r o u g h r e s e a r c h , r e g u l a t i o n

knowledge, and instrumentation, we

are your analytical centre for the

technica l knowledge you need,

BEFORE you need it, so you can stay

up to date and in the know.

ATTENTION Nick Felsing

PO NUMBER

PROJECT KX13772B14

RECEIVED / TEMP 2019-09-11 09:00 / 15°C

REPORTED 2019-10-02 09:06

PROJECT INFO

Work Order Comments:

This is a revised report; please refer to Appendix 3 for details.

WORK ORDER 9091394

If you have any questions or concerns, please contact me at [email protected]

Page 1 of 5Rev 2017-11-07 Caring About Results, Obviously. Page 1 of 5


REPORTED 2019-10-02 09:06

TEST RESULTS

PROJECT KX13772B14

WORK ORDER 9091394

Analyte Result RL Units Analyzed Qualifier

BH19-01 (G01) (9091394-01) | Matrix: Solid | Sampled: 2019-09-06 09:30

General Parameters

%< 0.050Sulfate, Water-Soluble 2019-09-160.050

% dry< 0.010Chloride, Water-Soluble 2019-09-200.010


General Parameters




General Parameters




General Parameters





REPORTED 2019-10-02 09:06

APPENDIX 1: SUPPORTING INFORMATION

PROJECT KX13772B14

WORK ORDER 9091394

Technique LocationAnalysis Description Method Ref.

Chloride, Water-Soluble in Solid CSA A23.2-4B Hot Water Extraction / Potentiometric Titration Richmond

Sulfate, Water-Soluble in Solid CSA A23.2-3B / CSA

A23.2-2B

Extraction (HCl) / Gravimetry (Barium Sulfate Precipitation) Richmond

Glossary of Terms:

RL Reporting Limit (default)

Percent%

Percent (dry weight basis)% dry

Less than the specified Reporting Limit (RL) - the actual RL may be higher than the default RL due to various factors<

CSA Canadian Standards Association Chemical Test Methods

General Comments:

The results in this report apply to the samples analyzed in accordance with the Chain of Custody document. This

analytical report must be reproduced in its entirety. CARO is not responsible for any loss or damage resulting directly or

indirectly from error or omission in the conduct of testing. Liability is limited to the cost of analysis. Samples will be

disposed of 30 days after the test report has been issued unless otherwise agreed to in writing.

Results in Bold indicate values that are above CARO's method reporting limits. Any results that are above regulatory

limits are highlighted red. Please note that results will only be highlighted red if the regulatory limits are included on the

CARO report. Any Bold and/or highlighted results do not take into account method uncertainty. If you would like method

uncertainty or regulatory limits to be included on your report, please contact your Account Manager:[email protected]



REPORTED 2019-10-02 09:06

APPENDIX 2: QUALITY CONTROL RESULTS

PROJECT KX13772B14

WORK ORDER 9091394

The following section displays the quality control (QC) data that is associated with your sample data. Groups of samples are prepared

in �batches� and analyzed in conjunction with QC samples that ensure your data is of the highest quality. Common QC types include:

� Method Blank (Blk): A blank sample that undergoes sample processing identical to that carried out for the test samples. Method

blank results are used to assess contamination from the laboratory environment and reagents.

� Duplicate (Dup): An additional or second portion of a randomly selected sample in the analytical run carried through the entire

analytical process. Duplicates provide a measure of the analytical method's precision (reproducibility).

� Blank Spike (BS): A sample of known concentration which undergoes processing identical to that carried out for test samples, a l so

referred to as a laboratory control sample (LCS). Blank spikes provide a measure of the analytical method's accuracy.

� Matrix Spike (MS): A second aliquot of sample is fortified with with a known concentration of target analytes and carried through

the entire analytical process. Matrix spikes evaluate potential matrix effects that may affect the analyte recovery.

� Reference Material (SRM): A homogenous material of similar matrix to the samples, certified for the parameter(s) listed.

Reference Materials ensure that the analytical process is adequate to achieve acceptable recoveries of the parameter(s) tested.

Each QC type is analyzed at a 5-10% frequency, i.e. one blank/duplicate/spike for every 10-20 samples. For all types of QC, the

specified recovery (% Rec) and relative percent difference (RPD) limits are derived from long-term method performance averages

and/or prescribed by the reference method.

Analyte Result RL UnitsSpike

Level

Source

Result% REC

REC

Limit% RPD

RPD

LimitQualifier

General Parameters, Batch B9I1255

Blank (B9I1255-BLK1) Prepared: 2019-09-16, Analyzed: 2019-09-16

%Sulfate, Water-Soluble < 0.050 0.050

General Parameters, Batch B9I1631

Blank (B9I1631-BLK1) Prepared: 2019-09-19, Analyzed: 2019-09-20

% dryChloride, Water-Soluble < 50.0 50.0

Duplicate (B9I1631-DUP1) Prepared: 2019-09-19, Analyzed: 2019-09-20Source: 9091394-03

% dryChloride, Water-Soluble < 0.010< 50.0 250.010

Reference (B9I1631-SRM1) Prepared: 2019-09-19, Analyzed: 2019-09-20

80-120111% dryChloride, Water-Soluble < 50.0 50.0 0.0656



REPORTED 2019-10-02 09:06

APPENDIX 3: REVISION HISTORY

PROJECT KX13772B14

WORK ORDER 9091394

AnalysisChangeChangedSample ID Analyte(s)

RL Revised2019-10-029091394-01 Chloride, Water-Soluble (CSA) Chloride, Water-Soluble





[This report shall not be reproduced except in full without the written authority of the Laboratory.]

10-SEP-19

Lab Work Order #: L2344502

Date Received:Wood Environmental & Infrastructure Solutions

913 Laval CrescentKamloops BC V2C 5P4

ATTN: Nikolaus Felsing FINAL 17-SEP-19 16:51 (MT)Report Date:

Version:

Certificate of Analysis

ALS CANADA LTD Part of the ALS Group An ALS Limited Company

____________________________________________

Selam WorkuAccount Manager

ADDRESS: 8081 Lougheed Hwy, Suite 100, Burnaby, BC V5A 1W9 Canada | Phone: +1 604 253 4188 | Fax: +1 604 253 6700

Client Phone: 250-374-1347

KX13772312.003Job Reference: NOT SUBMITTEDProject P.O. #:

C of C Numbers:Legal Site Desc:

17-SEP-19 16:51 (MT)

Sample ID Description

Client ID

Sampled Date

Grouping Analyte

Sampled Time

ALS ENVIRONMENTAL ANALYTICAL REPORT

L2344502 CONTD....

2PAGE of

Version: FINAL

3

WATER

Water10-SEP-19

#1

L2344502-1

12:27

pH (pH)

Sulfate (SO4) (ug/L)8.17

5000

Physical Tests

Anions and Nutrients

Reference Information 17-SEP-19 16:51 (MT)

L2344502 CONTD....

3PAGE of

EC-SCREEN-VA

PH-PCT-VA

SO4-IC-N-VA

Conductivity Screen (Internal Use Only)

pH by Meter (Automated)

Sulfate in Water by IC

Qualitative analysis of conductivity where required during preparation of other tests - e.g. TDS, metals, etc.

This analysis is carried out using procedures adapted from APHA Method 4500-H "pH Value". The pH is determined in the laboratory using a pH electrode

It is recommended that this analysis be conducted in the field.

Inorganic anions are analyzed by Ion Chromatography with conductivity and/or UV detection.

ALS Test Code Test Description

Water

Water

Water

APHA 2510

APHA 4500-H pH Value

EPA 300.1 (mod)

Method Reference**

** ALS test methods may incorporate modifications from specified reference methods to improve performance.

Matrix

The last two letters of the above test code(s) indicate the laboratory that performed analytical analysis for that test. Refer to the list below:

Laboratory Definition Code Laboratory Location

VA ALS ENVIRONMENTAL - VANCOUVER, BRITISH COLUMBIA, CANADA

GLOSSARY OF REPORT TERMSSurrogate - A compound that is similar in behaviour to target analyte(s), but that does not occur naturally in environmental samples. Forapplicable tests, surrogates are added to samples prior to analysis as a check on recovery.mg/kg - milligrams per kilogram based on dry weight of sample.mg/kg wwt - milligrams per kilogram based on wet weight of sample.mg/kg lwt - milligrams per kilogram based on lipid-adjusted weight of sample.mg/L - milligrams per litre.< - Less than.D.L. - The reported Detection Limit, also known as the Limit of Reporting (LOR).N/A - Result not available. Refer to qualifier code and definition for explanation.

Test results reported relate only to the samples as received by the laboratory.UNLESS OTHERWISE STATED, ALL SAMPLES WERE RECEIVED IN ACCEPTABLE CONDITION.Analytical results in unsigned test reports with the DRAFT watermark are subject to change, pending final QC review.

Test Method References:

Chain of Custody Numbers:

Version: FINAL

3

Quality Control ReportPage 1 of

Client:

Contact:

Wood Environmental & Infrastructure Solutions913 Laval Crescent Kamloops BC V2C 5P4Nikolaus Felsing

Report Date: 17-SEP-19Workorder: L2344502

Test Matrix Reference Result Qualifier Units RPD Limit Analyzed

PH-PCT-VA

SO4-IC-N-VA

Water

Water

R4806449

R4800697

Batch

Batch

CRM

LCS

MB

WG3158708-2

WG3158707-2

WG3158707-1

VA-PH7-BUFpH

Sulfate (SO4)

Sulfate (SO4)

7.03

100.6

<0.30

13-SEP-19

11-SEP-19

11-SEP-19

6.9-7.1

90-110

pH

%

mg/L 0.3

3

Quality Control ReportPage 2 ofReport Date: 17-SEP-19Workorder: L2344502

Limit ALS Control Limit (Data Quality Objectives)DUP DuplicateRPD Relative Percent DifferenceN/A Not AvailableLCS Laboratory Control SampleSRM Standard Reference MaterialMS Matrix SpikeMSD Matrix Spike DuplicateADE Average Desorption EfficiencyMB Method BlankIRM Internal Reference MaterialCRM Certified Reference MaterialCCV Continuing Calibration VerificationCVS Calibration Verification StandardLCSD Laboratory Control Sample Duplicate

Legend:

3

Quality Control ReportPage 3 ofReport Date: 17-SEP-19Workorder: L2344502

ALS Product Description Sample

ID Sampling Date Date Processed Rec. HT Actual HT

Physical Tests

1 10-SEP-19 12:27 13-SEP-19 13:44 0.25 73pH by Meter (Automated)

EHTR-FM

Qualifier

Legend & Qualifier Definitions:

The ALS Quality Control Report is provided to ALS clients upon request. ALS includes comprehensive QC checks with every analysis to ensure our high standards of quality are met. Each QC result has a known or expected target value, which is compared against pre-determined data quality objectives to provide confidence in the accuracy of associated test results.

Please note that this report may contain QC results from anonymous Sample Duplicates and Matrix Spikes that do not originate from this Work Order.

Hold Time Exceedances:

Notes*:Where actual sampling date is not provided to ALS, the date (& time) of receipt is used for calculation purposes.Where actual sampling time is not provided to ALS, the earlier of 12 noon on the sampling date or the time (& date) of receipt isused for calculation purposes. Samples for L2344502 were received on 10-SEP-19 13:40.

ALS recommended hold times may vary by province. They are assigned to meet known provincial and/or federal governmentrequirements. In the absence of regulatory hold times, ALS establishes recommendations based on guidelines published by theUS EPA, APHA Standard Methods, or Environment Canada (where available). For more information, please contact ALS.

Units

hours

EHTR-FM: EHTR: EHTL: EHT: Rec. HT:

Exceeded ALS recommended hold time prior to sample receipt. Field Measurement recommended.Exceeded ALS recommended hold time prior to sample receipt.Exceeded ALS recommended hold time prior to analysis. Sample was received less than 24 hours prior to expiry.Exceeded ALS recommended hold time prior to analysis.ALS recommended hold time (see units).

3

Appendix B

Limitations


Chase, BC

Wood File: KX13772B14.001 | 04 December 2019 Limitations

Limitations

1. The work performed in the preparation of this report and the conclusions presented herein are subject to the

following:

a) The contract between Wood and the Client, including any subsequent written amendment or Change

Order dully signed by the parties (hereinafter together referred as the “Contract”);

b) Any and all time, budgetary, access and/or site disturbance, risk management preferences, constraints or

restrictions as described in the contract, in this report, or in any subsequent communication sent by Wood

to the Client in connection to the Contract; and

c) The limitations stated herein.

2. Standard of care: Wood has prepared this report in a manner consistent with the level of skill and care ordinarily

exercised by reputable members of Wood’s profession, practicing in the same or similar locality at the time of

performance, and subject to the time limits and physical constraints applicable to the scope of work, and terms and

conditions for this assignment. No other warranty, guarantee, or representation, expressed or implied, is made or

intended in this report, or in any other communication (oral or written) related to this project. The same are

specifically disclaimed, including the implied warranties of merchantability and fitness for a particular purpose.

3. Limited locations: The information contained in this report is restricted to the site and structures evaluated by

Wood and to the topics specifically discussed in it, and is not applicable to any other aspects, areas or locations.

4. Information utilized: The information, conclusions and estimates contained in this report are based exclusively on:

i) information available at the time of preparation, ii) the accuracy and completeness of data supplied by the Client

or by third parties as instructed by the Client, and iii) the assumptions, conditions and qualifications/limitations set

forth in this report.

5. Accuracy of information: No attempt has been made to verify the accuracy of any information provided by the

Client or third parties, except as specifically stated in this report (hereinafter “Supplied Data”). Wood cannot be held

responsible for any loss or damage, of either contractual or extra-contractual nature, resulting from conclusions that

are based upon reliance on the Supplied Data.

6. Report interpretation: This report must be read and interpreted in its entirety, as some Sections could be

inaccurately interpreted when taken individually or out-of-context. The contents of this report are based upon the

conditions known and information provided as of the date of preparation. The text of the final version of this report

supersedes any other previous versions produced by Wood.

7. No legal representations: Wood makes no representations whatsoever concerning the legal significance of its

findings, or as to other legal matters touched on in this report, including but not limited to, ownership of any

property, or the application of any law to the facts set forth herein. With respect to regulatory compliance issues,

regulatory statutes are subject to interpretation and change. Such interpretations and regulatory changes should be

reviewed with legal counsel.

8. Decrease in property value: Wood shall not be responsible for any decrease, real or perceived, of the property or

site’s value or failure to complete a transaction, as a consequence of the information contained in this report.

9. No third-party reliance: This report is for the sole use of the party to whom it is addressed unless expressly stated

otherwise in the report or Contract. Any use or reproduction which any third party makes of the report, in whole or

in part, or any reliance thereon or decisions made based on any information or conclusions in the report is the sole

responsibility of such third party. Wood does not represent or warrant the accuracy, completeness, merchantability,

fitness for purpose or usefulness of this document, or any information contained in this document, for use or

consideration by any third party. Wood accepts no responsibility whatsoever for damages or loss of any nature or

kind suffered by any such third party as a result of actions taken or not taken or decisions made in reliance on this

report or anything set out therein. including without limitation, any indirect, special, incidental, punitive or

consequential loss, liability or damage of any kind.

Environmental Testing for Concrete Deterioration:

Highway 1 Chase Creek Road to Chase West, Chase, BC


10. Assumptions: Where design recommendations are given in this report, they apply only if the project contemplated

by the Client is constructed substantially in accordance with the details stated in this report. It is the sole

responsibility of the Client to provide to Wood changes made in the project, including but not limited to, details in

the design, conditions, engineering or construction that could in any manner whatsoever impact the validity of the

recommendations made in the report. Wood shall be entitled to additional compensation from Client to review and

assess the effect of such changes to the project.

11. Time dependence: If the project contemplated by the Client is not undertaken within a period of 18 months

following the submission of this report, or within the time frame understood by Wood to be contemplated by the

Client at the commencement of Wood’s assignment, and/or, if any changes are made, for example, to the elevation,

design or nature of any development on the site, its size and configuration, the location of any development on the

site and its orientation, the use of the site, performance criteria and the location of any physical infrastructure, the

conclusions and recommendations presented herein should not be considered valid unless the impact of the said

changes is evaluated by Wood, and the conclusions of the report are amended or are validated in writing

accordingly.

Advancements in the practice of geotechnical engineering, engineering geology and hydrogeology and changes in

applicable regulations, standards, codes or criteria could impact the contents of the report, in which case, a

supplementary report may be required. The requirements for such a review remain the sole responsibility of the

Client or their agents.

Wood will not be liable to update or revise the report to take into account any events or emergent circumstances or

facts occurring or becoming apparent after the date of the report.

12. Limitations of visual inspections: Where conclusions and recommendations are given based on a visual inspection

conducted by Wood, they relate only to the natural or man-made structures, slopes, etc. inspected at the time the

site visit was performed. These conclusions cannot and are not extended to include those portions of the site or

structures, which were not reasonably available, in Wood’s opinion, for direct observation.

13. Limitations of site investigations: Site exploration identifies specific subsurface conditions only at those points

from which samples have been taken and only at the time of the site investigation. Site investigation programs are a

professional estimate of the scope of investigation required to provide a general profile of subsurface conditions.

The data derived from the site investigation program and subsequent laboratory testing are interpreted by trained

personnel and extrapolated across the site to form an inferred geological representation and an engineering opinion

is rendered about overall subsurface conditions and their likely behaviour with regard to the proposed development.

Despite this investigation, conditions between and beyond the borehole/test hole locations may differ from those

encountered at the borehole/test hole locations and the actual conditions at the site might differ from those

inferred to exist, since no subsurface exploration program, no matter how comprehensive, can reveal all subsurface

details and anomalies.

Final sub-surface/bore/profile logs are developed by geotechnical engineers based upon their interpretation of field

logs and laboratory evaluation of field samples. Customarily, only the final bore/profile logs are included in

geotechnical engineering reports.

Bedrock, soil properties and groundwater conditions can be significantly altered by environmental remediation

and/or construction activities such as the use of heavy equipment or machinery, excavation, blasting, pile-driving or

draining or other activities conducted either directly on site or on adjacent terrain. These properties can also be

indirectly affected by exposure to unfavorable natural events or weather conditions, including freezing, drought,

precipitation and snowmelt.

During construction, excavation is frequently undertaken which exposes the actual subsurface and groundwater

conditions between and beyond the test locations, which may differ from those encountered at the test locations. It

is recommended practice that Wood be retained during construction to confirm that the subsurface conditions

throughout the site do not deviate materially from those encountered at the test locations, that construction work

has no negative impact on the geotechnical aspects of the design, to adjust recommendations in accordance with

conditions as additional site information is gained and to deal quickly with geotechnical considerations if they arise.

Environmental Testing for Concrete Deterioration:

Highway 1 Chase Creek Road to Chase West, Chase, BC


Interpretations and recommendations presented herein may not be valid if an adequate level of review or inspection

by Wood is not provided during construction.

14. Factors that may affect construction methods, costs and scheduling: The performance of rock and soil materials

during construction is greatly influenced by the means and methods of construction. Where comments are made

relating to possible methods of construction, construction costs, construction techniques, sequencing, equipment or

scheduling, they are intended only for the guidance of the project design professionals, and those responsible for

construction monitoring. The number of test holes may not be sufficient to determine the local underground

conditions between test locations that may affect construction costs, construction techniques, sequencing,

equipment, scheduling, operational planning, etc.

Any contractors bidding on or undertaking the works should draw their own conclusions as to how the subsurface

and groundwater conditions may affect their work, based on their own investigations and interpretations of the

factual soil data, groundwater observations, and other factual information.

15. Groundwater and Dewatering: Wood will accept no responsibility for the effects of drainage and/or dewatering

measures if Wood has not been specifically consulted and involved in the design and monitoring of the drainage

and/or dewatering system.

16. Environmental and Hazardous Materials Aspects: Unless otherwise stated, the information contained in this

report in no way reflects on the environmental aspects of this project, since this aspect is beyond the Scope of Work

and the Contract. Unless expressly included in the Scope of Work, this report specifically excludes the identification

or interpretation of environmental conditions such as contamination, hazardous materials, wild life conditions, rare

plants or archeology conditions that may affect use or design at the site. This report specifically excludes the

investigation, detection, prevention or assessment of conditions that can contribute to moisture, mold or other

microbial contaminant growth and/or other moisture related deterioration, such as corrosion, decay, rot in buildings

or their surroundings. Any statements in this report or on the boring logs regarding odours, colours, and unusual or

suspicious items or conditions are strictly for informational purposes

17. Sample Disposal: Wood will dispose of all uncontaminated soil and rock samples after 30 days following the release

of the final geotechnical report. Should the Client request that the samples be retained for a longer time, the Client

will be billed for such storage at an agreed upon rate. Contaminated samples of soil, rock or groundwater are the

property of the Client, and the Client will be responsible for the proper disposal of these samples, unless previously

arranged for with Wood or a third party.

Wood Environment & Infrastructure Solutions, Kamloops, BC V2C … · 2020. 5. 1. · Wood...

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