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

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1 Michael Pacholok Director Purchasing and Materials Management Division City Hall, 18 th 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 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 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 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 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 c.13 "Scope Common to All Water Treatment Plants," and Add the following sections: Add item 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 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 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 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 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 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. 2

3 R1-13 Add item 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 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 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 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 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 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 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. 3

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 or by at candida.charles@toronto.ca. 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 4

5 APPENDIX F FJ HORGAN INSPECTION REPORTS

6 P a g e 1 CITY OF TORONTO FJ HORGAN WATER TREATMENT PLANT INTAKE STRUCTURE INSPECTION AND MAINTENANCE

7 P a g e 2 INSPECTION AND MAINTENANCE PERFORMED BY: GENERAL DIVING CONTRACTORS INC. OCTOBER 23, 2015 GENERAL DIVING CONTRACTORS INC. 28 Fair Rd., Brantford, ON., N3T 5M

8 P a g e 3 F.J. HORGAN WATER TREATMENT PLANT TABLE OF CONTENTS Page 4 Page 4 Page 4 Page 5 Page 6-14 Page 15 Page Page 18 Introduction Scope Observations Recommendations Photographs Video Time References Ministry of Labour Notice of Project Binder Contents and DVD Titles

9 P a g e 4 F.J. HORGAN WATER TREATMENT PLANT 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 23 rd, 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.

10 P a g e 5 F.J. HORGAN WATER TREATMENT PLANT 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 months.

11 P a g e 6 INTAKE 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

12 P a g e 7 INTAKE As Found view of intake screens, note heavy mussel growth View of of an anode As Found view of intake structure screens

13 P a g e 8 INTAKE 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

14 P a g e 9 INTAKE 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

15 P a g e 10 INTAKE 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

16 P a g e 11 INTAKE View of cleaned intake structure screen View of cleaned intake structure screen looking down View of cleaned intake structure screen

17 P a g e 12 INTAKE View of cleaned intake structure screen View of top of intake structure and anodes View of marker buoy anchor block

18 P a g e 13 MARKER BUOY 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

19 P a g e 14 MARKER BUOY View of worn stainless steel chain View of worn stainless steel chain

20 P a g e 15 F.J. HORGAN WATER TREATMENT PLANT VIDEO DISCRIPTIONS AND TIME REFERENCES VIDEO FJ HORGAN WTP :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 00:07:23 View of interior of intake 00:07:52 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

21 P a g e 16 Ministry of Labour Notice of Diving Operations Notification No.eD 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 Owner Information (of Workplace) Owner Operating Name Province ON Telephone No. (905) ext. Fax No. CITY OF TORONTO Owner Legal Name Owner Address Unit No. Street No. PO Box 100 City/Town TORONTO Street Name QUEEN ST WEST Location of Diving Operation ( Directions ) F.J. HORGAN WTP 154 COPPERFIELD RD, SCARBOROUGH Province ON Street Type Street Direction Postal Code M5H 2N2 Telephone No. Fax No. (416) ext. City/Town/Village Region/County/District

22 P a g e 17 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 Location Breathing Mixture Depth Off Shore On Shore Air Mixed Gas Start Date ( yyyy/mm/dd ) Start Time 24h ( hh:mm ) Anticipated Completion Date ( yyyy/mm/dd 2015/10/23 8: /10/23 70 Metres Feet Classification Construction Industrial Emergency Services Mining Environment Last Name of Supervisor in charge of Diving Operation CROY First Name of Supervisor in charge of Diving Operation ANDY Is this work part of a Construction Project? Yes No Operating Name of Constructor Business No. Legal Name of Constructor Constructor Address Unit No. Street No Street Name Street Type Street Direction Postal Code PO Box City/Town Province Telephone No. Fax No. ext. 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 Address INFO@GENERALDIVING.COM

23 P a g e 18 F.J. HORGAN WATER TREATMENT PLANT Binder Contents 2015 F.J. Horgan Water Treatment Plant Report and Cover pages (18 total) DVD Video INSPECTION FJ HORGAN WTP 2015 GENERAL DIVING CONTRACTORS INC. 28 Fair Rd., Brantford, ON., N3T 5M

24 APPENDIX G RC HARRIS INSPECTION REPORTS

25 P a g e 1 CITY OF TORONTO R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION SEPTEMBER 19, 2016 GENERAL DIVING CONTRACTORS INC. 28 Fair Rd., Brantford, ON., N3T 5M

26 P a g e 2 R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION TABLE OF CONTENTS PAGE 3 PAGE 4 PAGE 5 14 INTRODUCTION AND SCOPE OBSERVATIONS AND RECOMMENDATIONS PHOTOGRAPHS

27 P a g e 3 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.

28 P a g e 4 R.C. HARRIS WATER TREATMENT PLANT INTAKE TUNNEL ROV INSPECTION OBSERVATIONS - The intake tunnel was inspected on September 19 th, 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.

29 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 5 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

30 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 6 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

31 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 7 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

32 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 8 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

33 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 9 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

34 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 10 Picture #16 View of the diffusers Picture #17 View of the diffusers Picture #18 View of the diffusers from below

35 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 11 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

36 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 12 Picture #22 View of mussel shells at bottom of the intake riser Picture #23 View of mussel shells at bottom of the intake riser Picture #24 View of mussel shells at bottom of the intake riser, note slope angle of accumulation, indicating much of the elbow is full of shells

37 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 13 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 View of mineral infiltration into the tunnel

38 R.C. Harris WTP ROV Intake Tunnel Inspection P a g e 14 Picture #28 View of mineral infiltration into the 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

39 P a g e 1 REPORT TO: Erik Lepik DATE: November 28, 2016 OF: Toronto Water, R.C. Harris WTP elepik@toronto.ca PHONE: CELL: FROM: Andy Croy PHONE: andy@generaldiving.com RE: East and West Intake Pipeline ROV inspection FAX: WEB: 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 5M

40 P a g e 2 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 26 th, 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.

41 P a g e 3 East Intake 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

42 P a g e 4 East Intake 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.

43 P a g e 5 East Intake 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

44 P a g e 6 East Intake 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

45 P a g e 7 East Intake 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

46 P a g e 8 East Intake 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

47 P a g e 9 East Intake 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

48 P a g e 10 East Intake 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

49 P a g e 11 East Intake 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

50 P a g e 12 West Intake 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

51 P a g e 13 West Intake 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

52 P a g e 14 West Intake 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

53 P a g e 15 West Intake 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

54 P a g e 16 West Intake 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

55 APPENDIX H RL CLARK INSPECTION REPORTS

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