ADDENDUM NO. 1 REQUEST FOR PROPOSAL NO. 9117-17-7043 …

Michael Pacholok Director

Purchasing and Materials Management Division City Hall, 18th Floor, West Tower 100 Queen Street West Toronto, Ontario M5H 2N2

Joanne Kehoe Manager Professional Services

February 27, 2017 Posted via PDF – (4 pages + 4 attachments)

ADDENDUM NO. 1

REQUEST FOR PROPOSAL NO. 9117-17-7043

For: Professional Services for Zebra Mussel Control System and Lake Current Monitoring

Upgrades at R.C Harris, R.L Clark, and F.J. Horgan Water Treatment Plants

CLOSING DATE: MARCH 09, 2017, 12:00 NOON (LOCAL TIME)

Please refer to the above Request for Proposal (RFP) document in your possession and be advised of the following: I. REVISIONS

R1-1. Add into section 2.4.1 after item z, additional item aa as follows:

aa. Prepare Standard Operating Procedure (SOP) documents for the on-shore and

off-shore pre-chlorination system, and for the Lake Current Monitoring System.

Refer to the SOP template, provided in Appendix E, as a sample of general

format and level of detail required.

R1-2. Create "APPENDIX F – FJ HORGAN INSPECTION REPORTS" and Add attachment A into

Appendix F

Attachment A – FJ Horgan WTP Inspection and Maintenance Report 2015, is included as Attachment 1 of Addendum No.1.

R1-3. Create "APPENDIX G – RC HARRIS INSPECTION REPORTS" and Add attachment B into Appendix G

Attachment B – RC Harris WTP Intake Tunnel ROV Inspection Report Sept 2016, is included as Attachment 2 of Addendum No.1.

R1-4. Add attachment C into Appendix G

Attachment C – RC Harris WTP East and West Intake Pipeline ROV Inspection Report Oct 2016, is included as Attachment 3 of Addendum No.1.

R1-5. Create "APPENDIX H – RL CLARK INSPECTION REPORTS" and Add attachment D into Appendix H

Attachment D – RL Clark WTP Intake Cleaning Report April 2014, is included as Attachment 4 of Addendum No.1.

2

R1-6 Replace item 2.3.1.c.9.e, entirely, with the following: For the On-Shore Raw Water Sampling System, demolish the existing in its entirety from the

Intake Surge Well to the Discharge Pipe on Level S2 in the Administration Building. Design a

replacement system including pumps, pipes, valves, instruments, accessories and controls.

Instruments to be replaced shall include, but are not limited to, the existing turbidimeter,

pH/temperature transmitter, particle counter, and level transmitter at the S10 level. Provide the

ability for the on-shore sample to be directed to the analytical station. Design a new analytical

station.

R1-7 Add item 2.3.1.c.9.s, with the following: Review the Contractor's draft Interference/Relocation Request (IRR) forms for activities that may

interfere with the Horgan WTP's normal operations or require the plant's assistance, before the

Contractor submits the final IRR to the Plant for approval.

R1-8 Create section 2.3.1.c.13 "Scope Common to All Water Treatment Plants," and Add the

following sections:

Add item 2.3.1.c.13.a with the following: Design pipes and electrical conduits/cables, and design support systems for pipes and cable

trays, in accordance with the requirements of the OBC Division B, part 5, Article 4.1.8.18 for

post-disaster structures. Design, select and locate supports, guides, seismic bracing, expansion

joints, anchors, and seismic restraint systems required for final layout. Provide design details

including load information, design calculations and illustrative drawings, stamped, signed and

dated by a Professional Engineer registered in the Province of Ontario. The Vendor is to

perform this work as part of Detailed Design Engineering Services, and depict all fabrication

details on the Contract Drawings, including weldments.

R1-9 Add item 2.3.1.c.13.b, with the following: Provide information about all equipment, valves, instruments etc. that will be specified, with

manufacturers and model numbers to the Plant for review and comment.

R1-10 Add item 2.3.1.c.13.c, with the following: Submit to the City the Vendor's draft submittal review comments concerning the Contractor's

submittals/shop drawings/samples, and allow at least three (3) working days for the City to

review and make suggestions, before finalizing and returning the submittal review comments to

the Contractor.

R1-11 Add item 2.3.1.c.13.d, with the following: Verify all materials delivered to site by the Contractor against approved submittal/shop

drawings/samples for contract compliance, and keep a copy of each packing slip.

R1-12 Add item 2.3.1.c.13.e, with the following:

Design replacement systems that are operable both locally and remotely and fully controllable

via SCADA. Include monitoring by SCADA for all new flowmeters provided in the clause above.

3

R1-13 Add item 2.3.1.c.13.f, with the following:

For each and every new penetration through building walls and floors - for pipes, electrical

metallic tubing, conduits, teck cables, etc. - include on the Contract Drawings a detail of fire

stopping certified by UL for a 4-hour F rating. Obtain custom engineering judgements as

necessary. Show in the detail other penetration requirements such as sleeves with or without

water stops/fins/seep rings, and escutcheon plates.

R1-14 Add item 2.3.1.c.13.g, with the following:

For each existing pipe penetration through structure walls and floors from dry to wet

(underwater) or vice versa, include in the Contract the removal and replacement of the metal

embedded in concrete.

R1-15 Add item 2.3.1.c.13.h, with the following:

Specify components such as pipes and valves to be NSF 61 and NSF 372 certified if commercially

available. Do not rely on the stainless steel and Teflon NSF exclusion clause in the City's

MOECC permit.

R1-16 Add item 2.3.1.c.13.i, with the following:

For demolition of existing underwater pipes and installation of new underwater pipes, determine

during the detailed design phase whether any temporary holes in existing building walls will be

necessary to enable removal/installation of long lengths.

R1-17 Add item 2.3.1.c.13.j, with the following:

For all replacement devices requiring electrical power and/or signal cables, replace the entire

length of existing cables from the device to the power source/control panel.

RI-18 Replace item 2.5.6, entirely, with the following: Base scope includes all demolition/refurbishment required to accommodate changes within the

existing structures/areas to allow work noted in scope. Develop and prepare demolition drawings

where required, as part of the tender documents. Decommissioned equipment, materials,

components, instrumentation and pipes shall not be abandoned in place – they are to be removed

as part of the demolition/refurbishment work.

R1-19 Replace item 2.11.1.a, entirely, with the following: The requirements to submit updated As-Built documentation includes all construction drawings,

Operation and Maintenance Manuals, PCNs and SOPs. All updates shall be submitted to the City

to reflect changes during post-construction period.

R1-20. Replace item 3.4.7.f, entirely, with the following:

The project team shall include the services of a senior scheduler with minimum of ten (10) years

of experience. Provide information regarding relevant background and experience. Provide

detailed CV in Appendix.

4

II. QUESTIONS AND ANSWERS

Q1: Do the old chlorine solution lines in the intake need to be removed or can they simply be

abandoned? A1: The old chlorine solution lines in the intake must be removed. Demolition drawings are required

to provide details for the construction contractor.

Q2: Will the City provide the latest intake inspection reports and videos? A2: The City will provide the latest intake inspection reports as attachments to this Addendum No.1,

see revisions R1-2 through R1-5 above. The corresponding intake inspection videos will only be

shared with the Vendor. Q3: Please clarify the requirements for a senior scheduler. A3: The minimum requirement for the project's senior scheduler is 10 years of relevant experience.

See revision R1-6 above.

Should you have any questions regarding this addendum contact Candida Charles at 416-392-7326 or by email at [email protected]. Please attach this addendum to your RFP document and be governed accordingly. Proponents are to acknowledge receipt of all addenda in the space provided on the Proposal Submission Form as per Section 1.4 –Proposal Process. All other aspects of the RFP remain the same.

Robert Nichols Acting Supervisor Professional Services

APPENDIX F

FJ HORGAN INSPECTION REPORTS

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CITY OF TORONTO

FJ HORGAN WATER TREATMENT PLANT

INTAKE STRUCTURE

INSPECTION AND MAINTENANCE

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INSPECTION AND MAINTENANCE

PERFORMED BY:

GENERAL DIVING CONTRACTORS INC.

OCTOBER 23, 2015

GENERAL DIVING CONTRACTORS INC. 28 Fair Rd., Brantford, ON., N3T 5M1 www.generaldiving.com 905-518-0178

http://www.generaldiving.com/

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F.J. HORGAN WATER TREATMENT PLANT

TABLE OF CONTENTS

Page 4 Introduction

Page 4 Scope

Page 4 Observations

Page 5 Recommendations

Page 6-14 Photographs

Page 15 Video Time References

Page 16 -17 Ministry of Labour Notice of Project

Page 18 Binder Contents and DVD Titles

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INTRODUCTION

General Diving Contractors (GDC) provided commercial diving services for the City of Toronto’s F.J.

Horgan Water Treatment Plant to complete inspections and maintenance of the water intake structure. A

meeting was held to discuss the inspection, expected conditions, and lock-out procedures. It was noted in the

meeting that no mussel control was in use and it was unknown if a marker buoy was present.

SCOPE

INTAKE STRUCTURE

- Locate offshore intake structure

- Inspect intake structure in “as found” conditions

- Clean intake screens

- Re-inspect intake structure for post cleaned conditions

MARKER BUOY

- Locate marker buoy

- Inspect marker buoy hardware

OBSERVATIONS

Intake Structure

- Inspection and maintenance operations were performed on October 23rd, 2015

- The intake structure was located at the co-ordinates provided by City of Toronto.

- A marker buoy was in position at this location.

- No physical damage was observed to the intake structure.

- The top of the intake structure was located in approximately 32’ of water.

- The lakebed bottom and bottom of the intake structure was located in approximately 65’ of water.

- Lakebed and surround conditions were observed with no concerns or presumed changes in recent

times.

- The intake structure was initially observed with heavy mussel coverage on all surfaces internally and

externally.

- The intake screens we 30% to 50% obstructed with mussel growth

- Approximately 20% to 30% of the cathodic system wiring had corroded to the point of failure.

- The anodes were observed to be sufficient in size, however, initial sizes are unknown.

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OBSERVATIONS – cont.

Marker buoy

- A marker buoy was located adjacent to the water intake structure location.

- The marker buoy was located approximately 50’ from the intake structure.

- The marker buoy above water was observed with no physical damage.

- The chain connection to the marker buoy was observed in good condition with no signs of accelerated

wear.

- The chain connection to the anchor block was observed in good condition with no signs of accelerated

wear.

- The chain where it contacts the lake bed bottom was observed with some wear, estimated wear was

30% to 40%

RECOMMENDATIONS

Intake Structure

- Due to the heavy growth of mussels internally and (presumed) in the intake riser and pipeline, further

cleaning and inspections should be performed to determine the extent of coverage.

- **Due consideration should be given for complete cleaning before chlorine is re-established at the

intake structure as a significant kill off of mussels will occur with possible resulting problems

downstream**

- Repair of cables connected to cathodic system.

- Replacement of anodes if required.

Marker Buoy

- Replacement of marker buoy chain in the next 12 – 18 months.

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“As Found” view

of intake screens,

note heavy

mussel growth

“As Found” view

of intake screens,

note heavy

mussel growth

“As Found” view

of intake screens,

note heavy

mussel growth

INTAKE

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“As Found” view

of intake screens,

note heavy

mussel growth

View of of an

anode

“As Found” view

of intake structure

screens

INTAKE

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“As Found” view

of corner of intake

screens

View looking into

intake structure,

note heavy

mussel growth

View looking into

intake structure,

note heavy

mussel growth

INTAKE

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“As Found” view

of base of intake

structure

“As Found” view

of bottom of

intake screens

and base of intake

structure

Complete view of

intake structure

from lake bed

bottom

INTAKE

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Complete view of

cleaned intake

structure from

lake bed bottom

“As Found”

condition, note

broken cathodic

protection cable

View of cleaned

intake structure

screen, note

broken cathodic

protection cable

INTAKE

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View of cleaned

intake structure

screen

View of cleaned

intake structure

screen looking

down

View of cleaned

intake structure

screen

INTAKE

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View of cleaned

intake structure

screen

View of top of

intake structure

and anodes

View of marker

buoy anchor block

INTAKE

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View of

attachment of

marker buoy

chain to anchor

block and swivel

Stainless steel

marker buoy

chain on bottom

(slack in chain)

View of

attachment and

chain swivel at the

marker buoy

MARKER BUOY

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View of worn

stainless steel

chain

View of worn

stainless steel

chain

MARKER BUOY

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VIDEO DISCRIPTIONS AND TIME REFERENCES

VIDEO – FJ HORGAN WTP 2015

00:00:37 – 00:09:37 View of intake screens before cleaning

00:00:43 View of intake screen

00:01:12 View of cathodic cables (some broken) right side of structure

00:01:26 View of underside of intake structure roof

00:01:33 View of cathodic cables

00:02:29 View of top of intake structure and anodes

00:03:15 View of anode

00:03:34 View of broken cathodic cable (top)

00:04:00 View of sample plates (?)

00:04:17 View broken cathodic cable

00:07:02 View of interior of intake



00:07:57 View of intake structure base

00:09:53 – 00:15:25 Navigation from intake structure to gate house

00:09:53 View of marker buoy block

00:10:24 View of marker buoy connection to block

00:10:53 View of chain swivel

00:11:05 View of worn area of chain

00:11:32 View worn chain links

00:13:24 View of marker buoy connection to chain

00:14:52 View of lake bed bottom where worn clean by excess chain dragging on bottom

00:15:28 – 00:22:12 Views of cleaned intake screens

00:15:38 View of cleaned screens from bottom

00:16:20 View of cleaned screens

00:18:23 View of cathodic cable

00:20:38 View of cathodic cable

00:22:12 – 00:24:56 Views of top of intake structure and anodes

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Ministry of Labour Notice of Diving Operations

Notification No.eD- 43365098 The following notice of Diving Operation is given pursuant to subsection 5(4) of Ontario Regulation 629/94, made

under the Occupational Health and Safety Act.

At least 24 hours before the diving operation begins: - Written or oral notice must be given to the Ministry of Labour regional dive office closest to the diving operation.

- Note: Notice must be written where a breathing mixture other than air is expected to be used.

In the event of an emergency dive for recovery, inspection or repair: - Oral notice must be given before any diving equipment is moved to the dive site.

If oral notice of a dive is given to the Ministry of Labour, then: - This notification form must be completed and submitted to the Ministry of Labour regional dive office closest to

the diving operation within 5 days after the day on which the diving operation begins.

In addition, pursuant to subsection 5(6), oral notification must be given to the Ministry of Labour regional dive office

closest to the diving operation as soon as possible in the event of any departure from the dive plan described in

this notice. This notice is required to be available at the dive site for inspection. See page 2 for contact

information.

Employer Information (of Diver)

Employer Operating Name General

Diving Contractors Business No.

Employer Legal Name

Employer Address

Unit No. Street No. 28

Street Name FAIR RD

Street Type Street Direction Postal Code N3T 5M1

PO Box City/Town BRANTFORD

Province ON

Telephone No.

(905) 518-0178 ext.

Fax No.

Owner Information (of Workplace) Owner Operating Name

CITY OF TORONTO

Owner Legal Name

Owner Address

Unit No. Street No.

100

Street Name QUEEN ST WEST

Street Type Street Direction Postal Code

M5H 2N2

PO Box City/Town TORONTO

Province ON

Telephone No.

(416) 392-2489 ext.

Fax No.

F.J. HORGAN WTP 154 COPPERFIELD RD, SCARBOROUGH

City/Town/Village Region/County/District

Location of Diving Operation ( Directions )

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Postal Code (if available) GPS Coordinates WGS 1984 (if available)

Latitude Longitude

Please choose the Ministry of Labour Regional Office closest to the diving operation. Central West - GREEN LINE/HWY 404 NEWMARKET

0069E (2014/03) © Queen's Printer for Ontario, 2014 Disponible en français

Page 1 of 2 Description of Diving Operation

INSPECT WATER INTAKE

Last Name of Supervisor in charge of Diving Operation First Name of Supervisor in charge of Diving Operation

CROY ANDY

Unit No. Street No Street Name Street Type Street Direction Postal Code

PO Box City/Town Province Telephone No.

ext.

Fax No.

Notice of Project No. W.S.I.B. Firm No.

Acknowledgement

I confirm that I am authorized to complete and submit this form.

I hereby certify that the information provided is true and correct to the best of my knowledge. Last name of person completing this form First name of person completing this form

CROY ANDY

Position Date (yyyy/mm/dd) DIRECTOR 2015/10/22 Email Address

[email protected]

Location Breathing Mixture Depth

Start Date ) yyyy/mm/dd ( Start Time 24h ) hh:mm ( Anticipated Completion Date yyyy/mm/dd (

Classification

70

8:00 2015/10/23 2015/10/23

Construction Industrial Emergency Services Mining Environmental

Metres Feet Air Mixed Gas Off Shore On Shore

Is this work part of a Construction Project?

Operating Name of Constructor Business No.

Constructor Address

Yes No

Legal Name of Constructor

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Binder Contents

2015 F.J. Horgan Water Treatment Plant Report and Cover pages (18 total)

DVD Video – INSPECTION FJ HORGAN WTP 2015



APPENDIX G

RC HARRIS INSPECTION REPORTS

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CITY OF TORONTO

R.C. HARRIS WATER TREATMENT PLANT

INTAKE TUNNEL ROV INSPECTION

SEPTEMBER 19, 2016



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R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION

TABLE OF CONTENTS

PAGE 3 INTRODUCTION AND SCOPE PAGE 4 OBSERVATIONS AND RECOMMENDATIONS PAGE 5 – 14 PHOTOGRAPHS

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R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION INTRODUCTION

General Diving Contractors Inc. (GDC) provided long distance ROV inspection services for the City of Toronto facility R.C. Harris Water Treatment Plant. Inspection was planned for the intake tunnel portion of the intake system. Approximate inspection distance from the low lift facility was estimated at 1100 meters. SCOPE Intake Tunnel

- A general condition assessment of the intake tunnel from the low lift facility with an initial decent

through a vertical shaft of 33 meters followed by a horizontal inspection distance of approximately 1100 meters to a vertical shaft.

- Travelling screens and bays (4) were inspected for general conditions and sediment / mussel / debris accumulations.

- Piping for 2 diffusers at the bottom of the vertical shaft at the plant were inspected for general conditions.

- The 2 diffusers at the bottom of the vertical shaft were inspected for general conditions. - Compile video and report.

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R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION

OBSERVATIONS

- The intake tunnel was inspected on September 19th, 2016 - The intake tunnel was inspected from the low lift pump facility down the vertical shaft approximately

30 meters and then horizontally through the intake tunnel for approximately 1100 meters. The inspection was terminated at the bottom of the second vertical shaft at the connection to the marine intake pipelines.

- The inspection was conducted while the R.C. Harris WTP was in operation in a low flow state. - The general condition of all areas inspected was observed to be in normal operating conditions, with

the exception of the bottom of the vertical shaft at the water treatment plant. The bottom of the shaft was observed with a large accumulation of mussel shells

- All observed tunnel surfaces were free of any mussel growth and / or any bio-growth. - All observed tunnel surfaces and joints were free of any physical defects. - Mineral deposits (white in colour) were observed at the pipeline joints and on the tunnel surfaces - Very minimal to nil accumulations of sediment or mussel shells were observed throughout the entire

tunnel distance inspected, with the exception of the bottom of the intake shaft at the water treatment plant.

- The offshore shaft was observed to be free of any accumulations of mussel shells or sediment at the bottom.

- The ladder secured to the offshore shaft was observed with a break in it. - Heavier accumulations of mineral infiltration was observed on the walls / joints at the terminus of the

intake tunnel / offshore shaft. - The service line piping in the water treatment plant shaft was observed to be in normal operating

conditions. One exception was noted on the HDPE piping, some potential blistering was observed. See picture #9

RECOMMENDATIONS

- Removal of accumulated mussel shells at the bottom of the vertical riser at the water treatment plant. - Inspection of the diffusers by divers and pressure testing.

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Picture #1

View of sluice gate operating stem

and general conditions of the concrete

walls in the low lift facility, no active

mussel or bio-growth on the walls /

floors / surfaces

Picture #2

View of the bottom of a sluice gate in

the low lift facility, outside one of the

travelling screens

Picture #3

View of typical sluice gate rail into a

travelling screen bay, and typical wall

conditions

R.C. Harris WTP ROV Intake Tunnel Inspection

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Picture #4

View of pathway into a travelling

screen bay, some mussel shell

accumulation

Picture #5

View of a travelling screen bay and

some mussel shell accumulation

Picture #6

View of service lines and bracket as

they descend the vertical shaft


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Picture #7

View of service lines in the low lift

facility as they are heading vertically

down into the intake shaft, stainless

steel piping on the left and HDPE on

the right

Picture #8

View of the service lines in the vertical

shaft

Picture #9

View of the service lines in the shaft

and possible blistering on the HDPE

line


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Picture #10

View of service lines and red gasket

material, perhaps used in the

bracketing

Picture #11

View of the service lines as they

terminate at the diffusers

Picture #12

View of the diffuser and bracketing


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Picture #13

View of the service line bolted flanges

at the diffusers

Picture #14

View of the diffusers

Picture #15

View of the diffuser where it attaches

to the intake shaft wall


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Picture #16


Picture #17


Picture #18

View of the diffusers from below


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Picture #19

View of the stainless steel service line

terminations, note lines are now up

stream of the diffuser and not stained

Picture #20

View of the stainless steel service line

terminations, note lines are now up

stream of the diffuser and not stained

Picture #21

View of top of the elbow at the

bottom of the intake shaft as it

transitions to the horizontal run


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Picture #22

View of mussel shells at bottom of the

intake riser

Picture #23


intake riser

Picture #24


intake riser, note slope angle of

accumulation, indicating much of the

elbow is full of shells


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Picture #25

Typical intake tunnel wall and floor

conditions will little to nil, sediment,

shells, and / or bio growth

Picture #26

View of mineral infiltration into the

tunnel

Picture #27


tunnel


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Picture #28


tunnel in larger amounts at the

terminus of the tunnel at the offshore

vertical shaft

Picture #29

View of ladder in offshore vertical

shaft

Picture #30

View of ladder break in offshore

vertical shaft


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REPORT TO: Erik Lepik DATE: November 28, 2016 OF: Toronto Water, R.C. Harris WTP PHONE: EMAIL: [email protected] CELL: FROM: Andy Croy PHONE: 905-518-0178 EMAIL: [email protected] FAX: RE: East and West Intake Pipeline ROV inspection WEB: www.generaldiving.com Erik; Enclosed is the report from the ROV inspection of the East and West intake pipelines at the R.C. Harris WTP Please do not hesitate to contact me if you have any questions. Andy Croy General Diving Contractors Inc.

28 FAIR RD, BRANTFORD, ONTARIO, N3T 5M1 905-518-0178 www.generaldiving.com

mailto:[email protected]

mailto:[email protected]


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Introduction

General Diving Contractors Inc. (GDC) utilized a ROV inspection system with 2000m of tether in conjunction with a dive vessel and diving crew to provide an inspection of the East and West intake pipelines at the R.C. Harris WTP. Inspections were completed from the offshore water intake structures to the intake pipeline junction point approximately 1500m inshore. Located at this junction point are large butterfly valves. The inspection on the East intake pipeline was halted at the butterfly valve as the ROV could not navigate past it due to material surrounding it. The inspection on the West intake pipeline was halted just beyond the butterfly valve due to concrete columns impeding further progress inside the junction point. The R.C. Harris water treatment plant was in operation at the time of the inspection, operating with its lowest flow possible. The inspection was completed on October 26th, 2016. Both pipelines are constructed of concrete and are of similar diameter and physical shape. The two pipelines did exhibit significant differences in general conditions in relation to mussel growth and shell deposits in the lower circumference of the pipeline. Observations

East Intake Pipeline

- The intake structure was covered with moderate to heavy growth of mussels. Beyond the point of discharge

of chlorine the mussel growth was nil. No live mussels were observed beyond a short distance from the point of chlorine application.

- No mussels and or bio-growth was observed on the pipeline walls. - Several large accumulations of mussel shells were observed in the lower circumference of the pipeline. - A large number of the pipeline joints had what looked like repairs or stone placed. Several locations the

material was very significant rising off the bottom several feet. - The physical determination of the intake pipeline condition was difficult to judge due to all the material at the

pipeline joints. - A section of abandoned pipe was embedded in the joint material while the other end remained free, posing a

risk to the ROV. - The terminus of the intake pipeline had significant stone / or repair material built-up to the point where the

butterfly valve is no longer operational. West Intake Pipeline

- The intake structure was covered with moderate to heavy growth of mussels. Beyond the point of discharge

of chlorine the mussel growth was nil. No live mussels were observed beyond a short distance from the point of chlorine application.

- A significant amount of mussels were observed on the pipeline walls. It was observed that all the mussel growth was dead and had turned white.

- Large accumulations of mussel shells were observed in the lower circumference of the pipeline through-out the entirety of the intake pipeline.

- The pipeline was observed to be free of physical damage and in normal physical operating condition. - The butterfly valve was observed with some debris accumulation at its base. - The area beyond the butterfly valve was free of mussel growth and some accumulations of shells were

observed.

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Diver waiting for ROV to assist it with entering the pipeline View looking down into intake, note heavy live mussel growth View from bottom of intake riser looking into pipeline, note certain surfaces receiving chlorine while others are not

East Intake

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View from near the intake, live mussel growth visible on bottom of pipeline and nil growth on the top of the pipeline, indicating chlorine is not fully mixed at this point View from near the intake, live mussel growth visible on bottom of pipeline and nil growth on the top of the pipeline, indicating chlorine is not fully mixed at this point View of where live mussel growth stops (dark area) and dead mussel shells begin, approximately 15 meters in from point of chlorine application.

East Intake

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View of typical manhole access View of large accumulation of mussel shells View of pipeline repairs or large debris in the bottom of the pipeline

East Intake

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View of clean section of pipeline View of pipeline repairs or large debris in the bottom of the pipeline at pipeline joint Closer view of above

East Intake

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View of upstream end of abandoned piece of pipe in the intake, embedded at this end in debris/repair View of loose end of pipe View of ROV tether under pipe

East Intake

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View of more repairs /debris at a pipeline joint View of more repairs /debris at a pipeline joint View of more repairs /debris at a pipeline joint, significant height above bottom of pipeline

East Intake

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Same view as above of more repairs /debris at a pipeline joint, significant height above bottom of pipeline View of more repairs /debris at a pipeline joint \ View of more repairs /debris at a pipeline joint

East Intake

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View of a large repair or over pour at butterfly valve Same view as above of a large repair or over pour at butterfly valve View of butter fly valve and material poured through it

East Intake

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View of butter fly valve and material poured through it View of butter fly valve and material poured through it View looking outside from inside of the intake waiting for diver to recover ROV through narrow opening

East Intake

P a g e | 12

Diver waiting for ROV to assist it with entering the pipeline View just downstream of the chlorine point of application, note live mussel growth and bare concrete View just downstream of the chlorine point of application, note live mussel growth and bare concrete

West Intake

P a g e | 13

Another view of the area where the live mussel growth moves to nil growth as the mixing of the chlorine is complete View approximately 15 meters downstream of the chlorine point of application, note no live mussel growth yet dead mussels attached to pipeline walls Typical view of the intake pipeline with mussel shells on the bottom of the pipeline from the 4:30 position to the 7:30 position of a clock face, and mussels attached to the pipeline walls

West Intake

P a g e | 14

Another typical view of the intake pipeline with mussel shells on the bottom of the pipeline from the 4:30 position to the 7:30 position of a clock face, and mussels attached to the pipeline walls View of butterfly valve and debris at the bottom Another view of the butterfly valve

West Intake

P a g e | 15

View of chamber tying in both intake pipelines, note concrete columns View inside chamber and view of mussel shell collection at East intake tie in Another view looking towards East Intake connection

West Intake

P a g e | 16

Typical view of West Intake pipeline conditions View looking from bottom of intake riser up and out of intake structure, note area ROV umbilical has swept clean View looking outside intake structure while ROV is waiting inside for the diver to assist with removal

West Intake

APPENDIX H

RL CLARK INSPECTION REPORTS

Documents

ADDENDUM NO. 1 REQUEST FOR PROPOSAL NO. 9117-17-7043 …