PARKS CANADA AGENCY
DRAG LAKE DAMS REHABILITATION
SPECIFICATIONS
Rev. 2 - Issued for Tender June 17, 2016
Prepared by KGS Group
TABLE OF CONTENTS
Section Number Title
01 11 00 Summary of Work
01 14 00 Work Restrictions
01 22 01 Measurement and Payment
01 31 19 Project Meetings
01 33 00 Submittal Procedures
01 35 29 Health and Safety Requirements
01 35 43 Environmental Procedures
01 45 00 Quality Control
01 52 00 Construction Facilities
01 56 00 Temporary Barriers and Enclosures
01 71 00 Examination and Preparation
01 74 11 Cleaning
01 77 00 Closeout Procedures
01 78 00 Closeout Submittals
02 41 19 Selective Structure Demolition
03 10 00 Concrete Forming and Accessories
03 20 00 Concrete Reinforcing
03 30 00 Cast-in-Place Concrete
03 37 26 Underwater Placed Concrete
05 12 23 Structural Steel
05 51 29 Metal Stairs
31 11 00 Clearing and Grubbing
31 68 13 Post-Tensioned Anchor
35 20 21 Cofferdam and Dewatering
14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 01 14 00: Work Restriction .2 Section 01 33 00: Submittal Procedures .3 Section 01 35 43: Environmental Procedures .4 Section 01 45 00: Quality Control .5 Section 01 71 00: Examination and Preparation
1.2 DEFINITIONS .1 Departmental Representative: Parks Canada Agency (PCA) .2 Consultant: KGS Group .3 Contractor: General Contractor who assumes the role of Constructor
1.3 WORK COVERED BY CONTRACT DOCUMENTS .1 Work of this Contract comprises rehabilitation of Drag Lake North Dam and South Dam, located on the Drag River in the Burnt River watershed at the outlet of Outlet Bay (on Drag Lake), near Haliburton, Ontario. .2 The Construction Work includes but is not limited to the following: .1 Temporary Site Access; .1 Access to staging areas and structures .2 Design, construct, and maintain temporary staging areas; .3 Provide public/recreational traffic control/detours; .4 Provide drainage, sediment and erosion control, and other environmental protection as specified in the Basic Impact Assessment; .5 Obtaining regulatory permits and certificates of authorization and approvals; .6 Design, install, and maintain dewatering of work area, including supply of the dewatering system and cofferdam construction (applicable only if Contractor elects to construct cofferdam or other means in lieu of using barge); .7 Protection of existing adjacent structures/properties, services, and utilities; .8 Relocate or temporarily remove existing services and utilities as required; .9 Clearing and grubbing of localized tree and vegetation growth; .10 Installation of post-tensioned anchors, load cells, and cables; .11 Removal of sediment and debris from river bed upstream of sluiceways as required to facilitate concrete repairs and concrete sill beams installation; .12 Relocation of rocks from river bed as required to avoid interference with safety booms during low water level and to permit mobilization, operation, and demobilization of construction barge(s). Rocks to be moved to a similar water depth adjacent to the existing site; .13 Concrete rehabilitation includes: 14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 2
.1 Refacing of sluiceway structures; .2 Installation of concrete topping on deck; .3 Localized repairs and grout injection; .4 Replacement of existing steel gains; .5 Installation of jacking pins; .6 Installation of steel liner; .7 Underwater concrete repair; .8 Replacement of existing steel grating above intake (South Dam only); .9 New concrete block under penstock .10 Surface preparation and painting of existing stoplog rails .14 Installation of service gains on upstream face of piers; .15 Installation of new steel walkways and stairs with associated concrete foundations; .16 Replacement of guardrails; .17 Modification and extension of safety booms and installation of new in-water and on-shore anchors; .18 Installation of safety signage; .19 Supply and testing of five new winches complete with breaker, wire rope, hook and handle; .20 Fabrication and installation of winch support frames; .21 Removal and disposals as required to facilitate the works stated above; .22 Removal of temporary works; .23 Site reinstatement and restoration.
1.4 TIME OF COMPLETION .1 Commence work in accordance with notification of acceptance of offer and complete the work within the dates outlined in the contract.
1.5 CONTRACT METHOD .1 Construct Work under combined lump sum and unit price contract.
1.6 EXAMINATION OF SITE .1 Visit the site before submitting tender. Examine site, adjacent premises, means of access and egress. Investigate and be fully informed of the nature and extent of the work required, difficulties in performing the work, facilities available for delivery and placing of materials. .2 Be completely familiar with every detail and intent of these specifications and scope of work to be performed, environmental restrictions, and all regulatory requirements governing the Work. .3 The Contractor is advised that all elevations and dimensions shown on the plans are approximate only. The Contractor will be required to verify all existing dimensions and grades before preparing and submitting shop drawings and before planning and 14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 3
undertaking any construction work. The Contractor will immediately report all discrepancies, in writing, to the Departmental Representative. .4 Refer to Section 01 71 00 for additional requirements.
1.7 WORK BY OTHERS .1 The Contractor shall for the purpose of the Ontario Occupational Health and Safety Act and Regulations for Construction Projects, and for the duration of the Work of the Contract: .1 Assume the role of Constructor in accordance with the Authority Having Jurisdictions.
1.8 SCHEDULING .1 Within ten (10) days of award of the Contract, provide Departmental Representative with a copy of the construction schedule. .1 Progress schedule must include the quantity of work to be accomplished within each two (2) week timeframe. .2 Ensure that it is understood that award of Contract or time of beginning, rate of progress, Certificate of Substantial Performance and Certificate of Completion as defined times of completion are of essence of this contract. .3 Commencement of work will not be permitted until a detailed schedule, has been reviewed by Departmental Representative, and revised and resubmitted by the Contractor. .1 No progress payments will be made until the construction progress schedule is approved. .2 Submit together with the progress schedule a cost breakdown for each lump sum and unit price payment items. .4 The Contractor shall submit an updated progress schedule with all progress claims or upon requested, within ten (10) working days .5 Resubmit the schedule with all revisions made to show the progress of the work and to show any changes which are required to meet the approved completion required to meet the approved completion dates. .6 Do not make changes to the approved schedule, without Departmental Representative’s approval. .7 The requirements of Section 01 33 00 apply to the construction progress schedule. .8 Notify Departmental Representative at least forty-eight (48) hours prior to work being carried out during “off-hour” periods. .9 Provide a schedule for the submission of shop drawings, plans and procedures. .10 If progress of work should fall behind, take steps required to bring work back to schedule. Do not change schedule without Departmental Representative’s approval. .1 Weather related delays with their remedial measures will be discussed and negotiated. 14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 4
1.9 WORK SEQUENCE .1 Construct Work in stages to allow the Owner to operate one of the two dams for water diversion during construction. .2 Plan and schedule in-water work and any tree removal work as to not interfere with restricted time periods as outlined in Section 01 14 00. .3 If barge is used, plan and schedule works to avoid mobilizing barge during low water level period. Refer to Section 01 14 00 Work Restrictions. .4 Maintain fire access/control to work area and adjacent properties at all time.
1.10 CONTRACTOR USE OF PREMISES .1 Unrestricted use of site (North and South Dams) until Substantial Performance, subject to Parks Canada Agency (PCA) needs for gate and stoplog operations when necessary. .2 Limit use of staging areas as stated below: .1 Staging Area 1 is owned by the municipality, and is used by school bus to turn- around. It may be used for loading/unloading of construction materials only outside of school bus schedule. Parking, trailers, and storage of construction materials are not permitted in Staging Area 1. .2 Staging Area 2 is privately owned, it maybe used for construction trailers, loading/unloading of construction materials, parking, and storage of construction materials. .3 Staging Area 3 is privately owned. .1 Minimize the extent of tree removal as required for construction of walkway. .2 Obtain approval from Departmental Representative for the extent of tree removal, and the amount and type of construction materials or equipments to be stored on the island. .3 Contractor shall take necessary measures to minimize the impact on the environment of the island. .4 Allow public/recreational access at the public boat launch (Staging Area 4), obtain applicable permit from local authority and Departmental Representative to use Staging Area 4 for loading/unloading of construction equipments and materials. .3 Obtain and pay for use of additional storage or work areas needed for operations under this Contract, if applicable.
1.11 OWNER FURNISHED ITEMS .1 Owner Responsibilities: .1 Supply of the following items: .1 Stoplogs; .2 Safety booms; .3 Dam safety buoy (above in-water anchor of safety booms). .2 Delivery of owner furnished items to staging area. 14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 5
.2 Contractor Responsibilities: .1 Receive and unload products at staging area. .2 Inspect deliveries jointly with Owner; record shortages, and damaged or defective items. .3 Mobilize products from staging area to site or temporary storage. .4 Handle products at site, including uncrating and storage. .5 Protect products from damage, and from exposure to elements. .6 Assemble, install, connect, adjust, and finish products. .7 Provide installation inspections. .8 Repair or replace items damaged by Contractor or subcontractor on site (under his control).
1.12 EXISTING SERVICES .1 Notify Departmental Representative and utility companies of intended interruption of services and obtain required permission. .2 Provide alternative routes for pedestrian and vehicular traffic as required. .3 Establish location and extent of service lines (including all buried utilities) in area of work before starting Work. Notify Departmental Representative of findings. .4 Submit schedule to and obtain approval from Departmental Representative for any shut- down or closure of active service or facility including power and communications services. Adhere to approved schedule and provide notice to affected parties. .5 Where unknown services are encountered, immediately advise Departmental Representative and Consultant and confirm findings in writing. .6 Protect, relocate or maintain existing active services. When inactive services are encountered, cap off in manner approved by authorities having jurisdiction. .7 Record locations of maintained, re-routed and abandoned service lines. .8 Construct barriers in accordance with Section 01 56 00 - Temporary Barriers and Enclosures.
1.13 QUALITY CONTROL .1 Refer to Section 01 45 00 – Quality Control.
1.14 ENVIRONMENTAL PROTECTION .1 All PCA projects must be executed to a high level of environmental protection standards, meeting and exceeding the industry’s standard practice, provincial and local jurisdiction. .2 Refer to Section 01 35 43 Environmental Procedures for environmental requirements.
1.15 WATER MANAGEMENT AND CONTROL .1 The owner (PCA) will continue their responsibility of water management and control on the TSW throughout the duration of the construction period. PCA will instruct the Contractor on any water control issues. 14-1538-002 Section 01 11 00 June 2016 SUMMARY OF WORK Drag Lake Dam Rehabilitation Page 6
.2 Plan and schedule North Dam and South Dam works in sequence, but not simultaneously. During construction at the North Dam, the water level will be controlled by operating the South Dam sluiceway, and vice versa. .3 The Contractor is solely responsible for planning and adjustment of construction activities according to the projected as well as actual water levels. Workboat and barge access may be restricted during low water level period. .4 For target water levels, refer to Section 01 14 00 – Work Restrictions.
1.16 REGULATORY REQUIREMENT .1 Liaise with the Owner (PCA) on permit and regulatory requirements. All fees associated to permits will be paid by PCA.
1.17 DOCUMENTS REQUIRED .1 Maintain at job site, one copy each document as follows: .1 Contract Drawings. .2 Specifications. .3 Addenda. .4 Reviewed Shop Drawings. .5 List of Outstanding Shop Drawings. .6 Change Orders. .7 Other Modifications to Contract. .8 Field Test Reports. .9 Copy of Approved Work Schedule. .10 Site Specific Health and Safety Plan and Other Safety Related Documents. .11 Manufacturers’ installation and application instructions. .12 Environmental Protection Plan .13 Other documents as specified.
Part 2 Products
2.1 NOT USED .1 Not used.
Part 3 Execution
3.1 NOT USED .1 Not used.
END OF SECTION 14-1538-002 Section 01 14 00 June 2016 WORK RESTRICTIONS Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 ACCESS AND EGRESS .1 Design, construct and maintain temporary "access to" and "egress from" work areas, including stairs, runways, ramps or ladders, and scaffolding, independent of finished surfaces and in accordance with relevant municipal, provincial and other regulations.
1.2 USE OF SITE AND FACILITIES .1 Execute work with least possible interference or disturbance to normal use of adjacent premises. Make arrangements with Departmental Representative to facilitate work as stated.
1.3 EXISTING SERVICES .1 Notify Departmental Representative and utility companies of intended interruption of services and obtain required permission. .2 Provide for pedestrian, boat, and vehicular traffic control. .3 Construct barriers in accordance with Section 01 56 00 - Temporary Barriers and Enclosures.
1.4 SPECIAL REQUIREMENTS .1 Ensure Contractor's personnel employed on site become familiar with and obey regulations including safety, fire, traffic and security regulations. .2 Keep within limits of work and avenues of ingress and egress. .3 Coordinate all operations for Work so that environmental mitigation measures are followed. Refer to Section 01 35 43. .4 Blasting for demolition and rock excavation is prohibited.
1.5 ROAD RESTRICTIONS .1 Minimize construction traffic along access roads and maintain safe speed in accordance to local authorities and regulations. .2 Where work involves disruption to site and rerouting of vehicular traffic, provide Department Representative with a Traffic Control Plan to the requirement of the local authorities and the standards set out in the Ontario Traffic Manual Book 7, Temporary Conditions. .3 Provide a minimum of three (3) weeks formal notification for alternations to the local road access to the Departmental Representative, local authorities, emergency services, Canada Post and residents. .4 Install road closure and construction advertising signs, two (2) weeks in advance of planned access changes. 14-1538-002 Section 01 14 00 June 2016 WORK RESTRICTIONS Drag Lake Dam Rehabilitation Page 2
1.6 REGIONAL ROAD LOAD RESTRICTIONS .1 Contractor will be responsible to obtain authorization from the Regional Municipality beforehand, and provide a copy of the authorization to the Department Representative. .2 Should authorization not be given, the Contractor is responsible to make alternative arrangements at no additional cost to the project.
1.7 ENVIRONMENTAL RESTRICTIONS .1 Section 01 35 43 – Environmental Procedure lists environmental restrictions and time frames that need to be considered in the planning of the Work. .2 The spawning and nursery periods for the Drag Lake fishery are between March 15 and July 15. There shall be no in-water work during this time, unless approved by PCA. In- water work and work adjacent to open water is to be done accordance with Section 01 35 43 – Environmental Procedures. .3 Tree cutting and clearing work during the migratory bird nesting season is to be done in accordance with Section 01 35 43 and Section 31 11 00.
1.8 WATER LEVELS .1 The end of spring Trent-Severn Waterway (TSW) target level for Drag Lake is EL. 353.8m. The TSW target level is typically maintained from May to June. Then, the water level starts dropping towards the winter TSW target level (EL. 353.1m). For reference, the top of apron elevation of the North Dam and South Dam are EL 351.85 and EL 351.61, respectively. Elevations mentioned above are based on CGVD28 (HTV2.0) datum, as per survey conducted in May 2012, using static GPS (PPP) observations. .2 The Contractor is solely responsible for making their own interpretation of the data included herein, and any received from PCA. .3 The Contractor is solely responsible for planning and adjustment of construction activities according to the projected as well as actual water levels. Workboat and barge access may be restricted during low water level period. .4 Daily water level variation graphs, together with historical high and low water levels can be seen on the following at: http://www.pc.gc.ca/lhn-nhs/on/trentsevern/visit/ne- wl/trent_e.asp. .5 The Contractor is cautioned that, while the Trent-Severn Waterway / PCA / Departmental Representatives endeavors to manage the water levels within the indicated ranges, it cannot be held responsible for events, or the result of natural occural events, that are not under its control.
1.9 PARKING .1 Limit parking of personal vehicles at construction site.
Part 2 Products
2.1 NOT USED .1 Not Used. 14-1538-002 Section 01 14 00 June 2016 WORK RESTRICTIONS Drag Lake Dam Rehabilitation Page 3
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 SECTION INCLUDES .1 This section provides a list of work items that need to be covered under the Contract Lump Sum Price and the procedures for payment that will be applied to these work items. .2 This section covers the measurement of work for payment purposes, and the scope of work included in the pay items in the Lump Sum Table.
1.2 APPLICATIONS FOR PROCESS PAYMENT .1 Make applications for payment on account as provided in Agreement as Work progresses. .2 Date applications for payment last day of payment period and ensure amount claimed is for value, proportional to amount of Contract, of Work performed and products delivered to place of work at that date. .3 Submit to Departmental Representative schedule of values of Contract Amount, at least 14 days before first application for payment, so as to facilitate evaluation of applications for payment.
1.3 SCHEDULE OF VALUES .1 Provide schedule of values supported by evidence as Consultant may reasonably direct and when accepted by Consultant, be used as basis for applications for payment. .2 Include statement based on schedule of values with each application for payment. .3 Support claims for products delivered to Place of Work but not yet incorporated into Work by such evidence as Consultant may reasonably require to establish value and delivery of products.
1.4 PREPARING SCHEDULE OF LUMP SUM TABLE ITEMS .1 Submit separate schedule of lump sum price items of Work requested in Bid form.
1.5 LUMP SUM PRICE ITEMS .1 Lump Sum Price – All work other than that which is specifically designated in the Unit Price Table, shall be included in Contract Lump Sum Price. This item includes all costs to undertake the Work. .2 The items of work listed below are not intended to be complete, but are provided to give an indication to the Contractor how the Contract Lump Sum Price will be broken down for payment purposes. As such, it is the Contractor’s responsibility to ensure that all items of work not covered under the Lump Sum Price Table are covered in the Contract Lump Sum Price. .3 Items of work to be considered in the Contract Lump Sum Price are, but not limited to: .1 Mobilization/Demobilization (Payment Group 1), including: .1 General site preparation, clearing and grubbing, soils stripping etc; 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 2
.2 General maintenance and cleaning of work site, site access, and haul routes; .3 Site security; .4 Snow removal; .5 Construction control and monitoring; .6 Temporary utilities; .7 Temporary facilities; .8 Contractor’s and Departmental Representative/Consultant’s Site Office; .9 Construction fencing and perimeter security measures around work area; .10 Shop drawings; .11 Submittals, approvals, permits and fees (other than specified below); .12 Close - out submission; .13 Other items in Contract Documents that are noted as being included in Lump Sum Price; .2 Environmental Protection (Payment Group 2), including: .1 Temporary drainage, sediment and erosion control and treatment at work area, construction, maintenance and removal, for items such as silt fencing, mulch diversion ditches or berms, revegetation, and etc.; .2 Dust and noise management; .3 Control work to provide effective environmental water body protection such as turbidity curtain(s), water quality monitoring, etc.; .4 Waste water management, including but not limited to filtering effluent to ensure deleterious materials not entering watercourse .3 Concrete Demolition and Repair – South Dam (Payment Group 3), including: .1 Removal and disposal of concrete from pier, sluiceway, deck, and bulkheads as shown on the drawings, including overbreak concrete and associated works; .2 Removal of existing handrails and signage; .3 Removal of sediment and debris from river bed on upstream face as required to facilitate concrete repairs; .4 Refacing of sluiceway structure; .5 Installation of concrete curbs on sluiceway; .6 Installation of concrete topping on deck; .7 Localized repairs and grout injection; .8 Removal of existing gain liners; .9 Fabrication and installation of new gain liners with jacking pin system; .10 Fabrication and installation of steel liners on piers; .11 Installation of tremie concrete and/or grout behind steel liners on piers; .12 Underwater concrete repair on upstream face; .13 Replace grating on the lower-deck above intake and reroute existing electrical cable and conduit; 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 3
.14 Installation of steel encased concrete pedestals with anchor bolts for new winch supports. .15 Surface preparation and painting of existing stoplog rails. .4 Concrete Demolition and Repair – South Dam Penstock Block (Payment Group 4), including: .1 Repair concrete block under penstock; .2 Install weep holes; .3 Install grout around penstock. .5 Concrete Demolition and Repair – North Dam (Payment Group 5), including: .1 Removal and disposal of concrete from pier, sluiceway, deck, and bulkheads as shown on the drawings, including overbreak concrete and associated works; .2 Removal of existing handrails and signage; .3 Refacing of sluiceway structure; .4 Installation of concrete topping on deck; .5 Installation of concrete stairs; .6 Localized repairs and grout injection; .7 Removal of existing gain liners; .8 Fabrication and installation of new gain liners with jacking pin system; .9 Underwater concrete repair on upstream face; .10 Installation of steel encased concrete pedestals with anchor bolts for new winch supports. .11 Surface preparation and painting of existing stoplog rails. .6 Metal Guardrails (Payment Group 6, 7), including: .1 Removal of existing guardrails; .2 Cut existing anchor bolts, grind flush and paint; .3 Installation of new guardrails including anchors. .7 New Service Gains & Concrete Sill Beam (Payment Group 8, 9), including: .1 Removal of sediment and debris from river bed on upstream face as required to facilitate installation of concrete sill beam; .2 Installation of concrete sill beam underwater; .3 Fabrication and installation of metal service gains on upstream face of piers; .4 Installation of stoplogs (stoplogs supplied by Owner); .5 Removal of stoplogs upon completion of construction. .8 Post-Tensioned Anchors (Payment Group 10, 11), including: .1 Partial demolition of concrete for anchor heads; .2 Supply of double corrosion protected (DCP) strand anchors; .3 Drilling, flushing and water testing of anchor holes .4 Consolidation grouting of anchor holes (up to 1.5 times the cumulative theoretical hole volume) 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 4
.5 Redrilling, flushing, and retesting of anchor holes; .6 Installation, primary grouting, and tensioning of anchors; .7 Supply and installation of two load cells; .8 Supply one load cell readout device, and provide training; .9 Supply anchor re-stressing assemblies. .9 Steel Walkway and Stairs (Payment Group 12), including: .1 Fabrication and erection of steel walkway, stairs, and handrails. .10 Walkway Foundations (Payment Group 13), including: .1 Excavation and install lean concrete as required; .2 Installation of reinforced concrete foundations on the island. .11 Dam Safety Signage (Payment Group 14), including: .1 Fabrication and installation of safety signage, including anchorage. .12 Safety Booms (Payment Group 15), including: .1 Removal of rocks from river bed as required to avoid interference with safety booms during low water level and to permit mobilization & demobilization of construction barge. .2 Install new in-water anchor and on-shore anchor; supply and install connecting hardwares. .3 Install an additional unit of safety boom; .13 Winches (Payment Group 16), including: .1 Supply of five new winches complete with breaker, cable, hook and handle; .2 Install four winches on support frames, and provide one winch to PCA as a backup winch. .14 Winch Support Frames (Payment Group 17), including: .1 Removal of existing winch support frames and anchor bolts; .2 Fabrication and installation of new winch support frames.
1.6 CONTRACT LUMP SUM PRICE WORK ITEMS PAYMENT PROCEDURES
.1 Items of Work will be paid within Contract Lump Sum Price at completion of the particular item of work, as set out below.
.1 Payment Group 1:“Mobilization/Demobilization” — 40% initial mobilization, 30% on completion of demobilization/acceptance of submittals, and 30% pro—rated over duration of contract. .2 Payment Group 2: “Environmental Protection’ — 20% initial activities (program development and approvals/installation of measures/initial work) , 10% removal of measures/reporting and 70% maintenance/monitoring pro-rated over duration of the work item. 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 5
.3 Payment Group 3: “Concrete Demolition and Repair – South Dam” — 100% pro-rated over duration of the work item. Work items with multi- items may be broken into individual items. .4 Payment Group 4: “Concrete Demolition and Repair – South Dam Penstock Block” — 100% construction activities. .5 Payment Group 5: “Concrete Demolition and Repair – North Dam” — 100% pro-rated over duration of the work item. Work items with multi- items may be broken into individual items. .6 Payment Group 6: “Metal Guardrails– South Dam” — 100% construction activities. .7 Payment Group 7: “Metal Guardrails– North Dam” — 100% construction activities .8 Payment Group 8: “New Service Gains & Concrete Sill Beam – South Dam” — 70% construction activities, 30% removal of stop logs. .9 Payment Group 9: “New Service Gains & Concrete Sill Beam- North Dam” — 70% construction activities, 30% removal of stop logs. .10 Payment Group 10: “Post-Tensioned Anchors – South Dam” — 100% construction activities .11 Payment Group 11: “Post-Tensioned Anchors- North Dam” — 100% construction activities .12 Payment Group 12: “Steel Walkway and Stairs” —10% shop drawing approval, 40% upon delivery to site, 50% pro-rated over duration of erection. .13 Payment Group 13: “Walkway Foundations” — 100% construction activities. .14 Payment Group 14: “Dam Safety Signage Installation” — 100% construction activities .15 Payment Group 15: “Safety Boom Installation” — 100% construction activities .16 Payment Group 16: “Winches” — 80% upon delivery to site; 20% installed and tested on site .17 Payment Group 17: “Winch Support Frames” — 10% shop drawing approval, 40% upon delivery to site, 50% completion of erection.
1.7 PROGRESS PAYMENT .1 Consultant will issue to Owner, no later than 10 days after receipt of an application for payment, certificate for payment in amount applied for or in such other amount as Consultant determines to be due. If Consultant amends application, Consultant will give notification in writing giving reasons for amendment.
1.8 SUBSTANTIAL PERFORMANCE OF WORK .1 Prepare and submit to Consultant comprehensive list of items to be completed or corrected and apply for a review by Consultant to establish Substantial Performance of Work or substantial performance of designated portion of Work when Work is 14-1538-002 Section 01 22 01 June 2016 MEASUREMENT AND PAYMENT Drag Lake Dam Rehabilitation Page 6
substantially performed if permitted by lien legislation applicable to Place of Work designated portion which Owner agrees to accept separately is substantially performed. Failure to include items on list does not alter responsibility to complete Contract. .2 No later than 10 days after receipt of list and application, Consultant will review Work to verify validity of application, and no later than 7 days after completing review, will notify Contractor if Work or designated portion of Work is substantially performed. .3 Immediately following issuance of certificate of Substantial Performance of Work, in consultation with Consultant, establish reasonable date for finishing Work.
1.9 FINAL PAYMENT .1 Submit application for final payment when Work is completed. .2 Consultant will, no later than 10 days after receipt of application for final payment, review Work to verify validity of application. Consultant will give notification that application is valid or give reasons why it is not valid, no later than 7 days after reviewing Work. .3 Consultant will issue final certificate for payment when application for final payment is found valid.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 31 19 June 2016 PROJECT MEETINGS Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Not Used.
1.2 ADMINISTRATIVE .1 Attend project meetings throughout the progress of the work at the frequency of every two (2) weeks or at the call of Departmental Representative. .2 Provide physical space and make arrangements for meetings. .3 Representative of Contractor, Subcontractor and suppliers attending meetings will be qualified and authorized to act on behalf of party each represents.
1.3 PRECONSTRUCTION MEETING .1 Within 10 days after award of Contract, Departmental Representative will schedule a meeting of parties in contract to discuss and resolve administrative procedures and responsibilities. .2 Departmental Representative, EA Officer, Consultant, Contractor, major Subcontractors, and field inspectors will be in attendance. .3 Agenda to include: .1 Appointment of official representative of participants in the Work. .2 Schedule of Work. .3 Health and Safety – site specific safety plan. .4 Environmental Protection Plan .5 Schedule of submission of shop drawings, samples, colour chips. Submit submittals in accordance with Section 01 33 00 - Submittal Procedures. .6 Requirements for temporary facilities, site sign, offices, storage sheds, utilities, fences in accordance with Section 01 52 00 - Construction Facilities. .7 Site security in accordance with Section 01 56 00 - Temporary Barriers and Enclosures. .8 Proposed changes, change orders, procedures, approvals required, mark-up percentages permitted, time extensions, overtime, administrative requirements. .9 Owner provided products. .10 Record drawings in accordance with Section 01 33 00 - Submittal Procedures. .11 Maintenance manuals in accordance with Section 01 78 00 - Closeout Submittals. .12 Take-over procedures, acceptance, warranties in accordance with Section 01 78 00 - Closeout Submittals. .13 Monthly progress claims, administrative procedures, photographs, hold backs. .14 Appointment of inspection and testing agencies or firms. .15 Insurances, transcript of policies. 14-1538-002 Section 01 31 19 June 2016 PROJECT MEETINGS Drag Lake Dam Rehabilitation Page 2
1.4 PROGRESS MEETINGS .1 Contractor, major Subcontractors involved in Work, Departmental Representative and Consultant are to be in attendance. .2 Agenda to include the following: .1 Review, approval of minutes of previous meeting. .2 Health and safety updates including incidents and near misses. .3 Review of Work progress since previous meeting. .4 Field observations, problems, conflicts. .5 Problems which impede construction schedule. .6 Review of off-site fabrication delivery schedules. .7 Corrective measures and procedures to regain projected schedule. .8 Revision to construction schedule. .9 Progress schedule, during succeeding work period. .10 Review submittal schedules: expedite as required. .11 Maintenance of quality standards. .12 Review proposed changes for affect on construction schedule and on completion date. .13 Other business.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 33 00 June 2016 SUBMITTAL PROCEDURES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 024119 – Selective Structure Demolition .2 Section 031000 – Concrete Forming and Accessories .3 Section 032000 – Concrete Reinforcing .4 Section 033000 – Cast-in-Place Concrete .5 Section 051223 – Structural Steel
1.2 REFERENCES .1 Not Used.
1.3 ADMINISTRATIVE .1 Submit to Departmental Representative and Consultant submittals listed for review. Submit promptly and in orderly sequence to not cause delay in Work. Failure to submit in ample time is not considered sufficient reason for extension of Contract Time and no claim for extension by reason of such default will be allowed. .2 Do not proceed with Work affected by submittal until review is complete. .3 Present shop drawings, product data, samples and mock-ups in SI Metric units. .4 Where items or information is not produced in SI Metric units converted values are acceptable. .5 Review submittals prior to submission to Departmental Representative and Consultant. This review represents that necessary requirements have been determined and verified, or will be, and that each submittal has been checked and co-ordinated with requirements of Work and Contract Documents. Submittals not stamped, signed, dated and identified as to specific project will be returned without being examined and considered rejected. .6 Notify Departmental Representative and Consultant, in writing at time of submission, identifying deviations from requirements of Contract Documents stating reasons for deviations. .7 Verify field measurements and affected adjacent Work are co-ordinated. .8 Contractor's responsibility for errors and omissions in submission is not relieved by Departmental Representative's and Consultant's review of submittals. .9 Contractor's responsibility for deviations in submission from requirements of Contract Documents is not relieved by Departmental Representative and Consultant review. .10 Keep one reviewed copy of each submission on site.
1.4 SHOP DRAWINGS AND PRODUCT DATA .1 The term "shop drawings" means drawings, diagrams, illustrations, schedules, performance charts, brochures and other data which are to be provided by Contractor to illustrate details of a portion of Work. 14-1538-002 Section 01 33 00 June 2016 SUBMITTAL PROCEDURES Drag Lake Dam Rehabilitation Page 2
.2 Submit drawings stamped and signed by professional engineer registered or licensed in Province of Ontario of Canada. .3 Indicate materials, methods of construction and attachment or anchorage, erection diagrams, connections, explanatory notes and other information necessary for completion of Work. Where articles or equipment attach or connect to other articles or equipment, indicate that such items have been co-ordinated, regardless of Section under which adjacent items will be supplied and installed. Indicate cross references to design drawings and specifications. .4 Allow 5 working days for Departmental Representative's and Consultant's review of each submission. .5 Adjustments made on shop drawings by Departmental Representative and Consultant are not intended to change Contract Price. If adjustments affect value of Work, state such in writing to Departmental Representative and Consultant prior to proceeding with Work. .6 Make changes in shop drawings as Departmental Representative and Consultant may require, consistent with Contract Documents. When resubmitting, notify Departmental Representative and Consultant in writing of revisions other than those requested. .7 Accompany submissions with transmittal letter, containing: .1 Date. .2 Project title and number. .3 Contractor's name and address. .4 Identification and quantity of each shop drawing, product data and sample. .5 Other pertinent data. .8 Submissions include: .1 Date and revision dates. .2 Project title and number. .3 Name and address of: .1 Subcontractor. .2 Supplier. .3 Manufacturer. .4 Contractor's stamp, signed by Contractor's authorized representative certifying approval of submissions, verification of field measurements and compliance with Contract Documents. .5 Details of appropriate portions of Work as applicable: .1 Fabrication. .2 Layout, showing dimensions, including identified field dimensions, and clearances. .3 Setting or erection details. .4 Capacities. .5 Performance characteristics. .6 Standards. .7 Operating weight. 14-1538-002 Section 01 33 00 June 2016 SUBMITTAL PROCEDURES Drag Lake Dam Rehabilitation Page 3
.8 Wiring diagrams. .9 Single line and schematic diagrams. .10 Relationship to adjacent work. .9 After Departmental Representative's and Consultant's review, distribute copies. .10 Submit electronic copy of shop drawings for each requirement requested in specification Sections and as Departmental Representative or Consultant may reasonably request. .11 Submit electronic copy of product data sheets or brochures for requirements requested in specification Sections and as requested by Departmental Representative or Consultant where shop drawings will not be prepared due to standardized manufacture of product. .12 Submit electronic copy of test reports for requirements requested in specification Sections and as requested by Departmental Representative or Consultant. .1 Report signed by authorized official of testing laboratory that material, product or system identical to material, product or system to be provided has been tested in accord with specified requirements. .2 Testing must have been within 3 years of date of contract award for project. .13 Submit electronic copy of certificates for requirements requested in specification Sections and as requested by Departmental Representative or Consultant. .1 Statements printed on manufacturer's letterhead and signed by responsible officials of manufacturer of product, system or material attesting that product, system or material meets specification requirements. .2 Certificates must be dated after award of project contract complete with project name. .14 Submit electronic copy of manufacturers instructions for requirements requested in specification Sections and as requested by Departmental Representative or Consultant. .1 Pre-printed material describing installation of product, system or material, including special notices and Material Safety Data Sheets concerning impedances, hazards and safety precautions. .15 Submit electronic copy of Manufacturer's Field Reports for requirements requested in specification Sections and as requested by Departmental Representative or Consultant. .16 Documentation of the testing and verification actions taken by manufacturer's representative to confirm compliance with manufacturer's standards or instructions. .17 Submit electronic copy of Operation and Maintenance Data for requirements requested in specification Sections and as requested by Departmental Representative or Consultant. .18 Delete information not applicable to project. .19 Supplement standard information to provide details applicable to project. .20 If upon review by Departmental Representative and Consultant, no errors or omissions are discovered or if only minor corrections are made, copies will be returned and fabrication and installation of Work may proceed. If shop drawings are rejected, noted copy will be returned and resubmission of corrected shop drawings, through same procedure indicated above, must be performed before fabrication and installation of Work may proceed. 14-1538-002 Section 01 33 00 June 2016 SUBMITTAL PROCEDURES Drag Lake Dam Rehabilitation Page 4
.21 The review of shop drawings is for sole purpose of ascertaining conformance with general concept. .1 This review shall not mean approval of detail design inherent in shop drawings, responsibility for which shall remain with Contractor submitting same, and such review shall not relieve Contractor of responsibility for errors or omissions in shop drawings or of responsibility for meeting requirements of construction and Contract Documents. .2 Without restricting generality of foregoing, Contractor is responsible for dimensions to be confirmed and correlated at job site, for information that pertains solely to fabrication processes or to techniques of construction and installation and for co-ordination of Work of sub-trades.
1.5 CERTIFICATES AND TRANSCRIPTS .1 Immediately after award of Contract, submit Workers' Compensation Board status. .2 Submit transcription of insurance immediately after award of Contract.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 GENERAL REQUIREMENTS .1 Comply with Ontario Occupational Health and Safety Act, Canada Labour Code Part II, and Canada Occupational Safety and Health Regulations. .2 Develop written Site Specific Health and Safety Plan based on hazard assessment prior to commencing any site work and continue to implement, maintain, and enforce plan until final demobilization from site. Health and Safety Plan must address project specifications. .3 Relief from or substitution from any portion or provisions of minimum Health and Safety Guidelines specified herein or reviewed site-specific Health and Safety Plan must be submitted to the Departmental Representative in writing. Departmental Representative will respond in writing either accepting or requesting improvements.
1.2 REFERENCES .1 Canada Labour Code, Part 2, Canada Occupational Safety and Health Regulations .2 Province of Ontario .1 Occupational Health and Safety Act and Regulations for Construction Projects, R.S.O. 1990, c.0.1, as amended and O. Reg. 213/91 as amended - Updated 2005, and .1 Regulations for Construction Projects, 0. Reg. 213/91 as amended. .2 Regulations for Diving Operations, 0. Reg. 629/94 as amended. .2 Workplace Safety and Insurance Act, 1997. .3 Municipal statutes and authorities. .3 Canadian Standards Association (CSA) Canada .1 CSA S350—M1980(R2003), Code of Practice for Safety in Demolition of Structures. .4 National Building Code 2010 (NBC) .1 NBC 2010, Division B, Part 8 Safety Measures at Construction and Demolition Sites. .5 Health Canada/workplace Hazardous Materials Information System (WHMIS) .1 Material Safety Data Sheets (MSDS) .6 Fire Commissioner of Canada (FCC): .1 FC—301 Standard for Construction Operations, June 1982. .2 FC—302 Standard for Welding and Cutting, June 1982.
Labour Program Fire Protection Engineering Services 4900 Yonge Street 8th Floor 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 2
North York, Ontario M2N 6A8 Copies may be obtained from: Human Resources and Social Development Canada Labour Program Fire Protection Engineering Services Ottawa, Ontario K1A 0J2
1.3 SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Submit site-specific Health and Safety Plan: Within 7 days after date of Notice to Proceed and prior to commencement of Work. Health and Safety Plan must include: .1 Results of site specific safety hazard assessment. .2 Results of safety and health risk or hazard analysis for site tasks and operation found in the work plan. .3 Measures and controls to be implemented to address identified safety hazards and risks. .4 Safety communication plan including contact information for all key contacts. .5 Contingency and Emergency Response Plan addressing standard operating procedures specific to the project site to be implemented during emergency situations. Coordinate plan with existing Emergency Response requirements and procedures provided by Departmental Representative. .6 Emergency Preparedness Plan (EPP) to be prepared by the Contractor for external use, defining hazards posed by the working situation, the role and responsibilities of all parties and notification to be made. The EPP is to be prepared in accordance with the latest edition of the Canadian Dam Association Dam Safety Guidelines. Coordinate plan with local municipalities and Provincial Authorities. .7 Contractor’s Health and Safety Policy. .8 Name of Health and Safety Coordinator and his/her alternate. .3 If diving work is required, submit a separate site-specific Health and Safety Plan for Diving Operations, at least 7 days prior to commencement of diving work. Health and Safety Plan must include: .1 Site-specific safety hazard assessment and measures to be taken to address the anticipated hazards associated with diving work. .2 Diving Contractor’s and Contractor’s Safety Communication Plan. Must include contract information for all key contacts. .3 Contingency and Emergency Response Plan addressing standard operating procedures specific to the Diving Operations to be implemented during emergency situations. .4 Diving Contractor’s Health and Safety Policy. .5 Name of Health and Safety Coordinator. .4 Departmental Representative will review Contractor's site-specific Health and Safety Plan and provide comments to Contractor within 7 days after receipt of plan. Revise plan 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 3
as appropriate and resubmit plan to Departmental Representative within 5 days after receipt of comments from Departmental Representative. .5 Departmental Representative's review of Contractor's final Health and Safety plan should not be construed as approval and does not reduce the Contractor's overall responsibility for construction Health and Safety. .6 Submit records of Contractor’s Health and Safety meetings or daily tailgate meeting for diving operations when requested. .7 Submit copies of Contractor's authorized representative's work site health and safety inspection reports to Departmental Representative monthly. .8 Submit Construction safety Checklists after completion. .9 Submit copies of reports or directions issued by Federal, Provincial and Territorial health and safety inspectors. .10 Submit copies of incident and accident reports. .11 Submit WHMIS MSDS - Material Safety Data Sheets for materials brought to site. .12 Medical Surveillance: where prescribed by legislation, regulation or safety program, submit certification of medical surveillance for site personnel prior to commencement of Work, and submit additional certifications for any new site personnel to Departmental Representative.
1.4 FILING OF NOTICE .1 File Notice of Project with Provincial authorities prior to commencement of Work. .2 If project requires diving, a separate Notice of Project needs to be filled with Provincial authorities prior to commencement of work. .3 Submit copies of Notice(s) of Project to Departmental Representative. .4 File all other required notices in accordance with Acts and Regulations of Province of Ontario. .5 Keep copy of Notice of Project on site at all times.
1.5 SAFETY ASSESSMENT .1 Perform site specific safety hazard assessment related to project.
1.6 MEETINGS .1 Schedule and administer Health and Safety meeting with Departmental Representative prior to commencement of Work.
1.7 REGULATORY REQUIREMENTS .1 Comply with the Acts and regulations of the Province of Ontario. .2 Comply with specified standards and regulations to ensure safe operations at site. .3 In the event of conflict between any provisions of specified standards and regulations, the most stringent provision governs. 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 4
1.8 PROJECT/SITE CONDITIONS .1 Hazards on-site include but are not limited to: .1 Working near or under electrical wires. .2 Working around moving equipment and heavy machinery. .3 Working near or above water. .4 Working under water. .5 Falling, tripping and slipping surfaces and hazards. .6 Animals and pests. .7 Extreme temperatures or weather conditions. .2 Work at site will involve contact with the following hazardous materials: .1 Silica/silica dust from concrete demolition. .2 Pressure treated lumber (existing timber under deck of dam). .3 Bird droppings on the structure. .4 Benzene in fuel/oil, and adhesives. .5 Arsenic and acrylonitrile in adhesives. .6 Fresh concrete, concrete admixtures and bonding agents. .7 Corroded metals. .3 Steep and slippery embankments can make accessing the downstream side of the dam hazardous. .4 Leakage through stoplogs will cause significant suction force upstream of dam.
1.9 GENERAL REQUIREMENTS .1 Develop written site-specific Health and Safety Plan based on hazard assessment prior to beginning site Work and continue to implement, maintain, and enforce plan until final demobilization from site. Health and Safety Plan must address project specifications. .2 Site-specific Health and Safety Plan needs to cover all sub-trades utilized on the project, with the exception of diving operations, which require a separate site-specific Health and Safety Plan. .3 Departmental Representative may respond in writing, where deficiencies or concerns are noted and may request re-submission with correction of deficiencies or concerns either accepting or requesting improvements.
1.10 REPONSIBILITY .1 Be responsible for health and safety of persons on site, safety of property on site and for protection of persons adjacent to site and environment to extent that they may be affected by conduct of Work. .2 Contractor will be responsible and assume the role of Constructor as described in the Ontario Occupational Health and Safety Act and Regulations for Construction Projects. .3 Comply with and enforce compliance by employees with safety requirements of Contract Documents, applicable federal, provincial, territorial and local statutes, regulations, and ordinances, and with site-specific Health and Safety Plan. 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 5
1.11 COMPLIANCE REQUIREMENTS .1 Comply with Ontario Occupational Health and Safety Act, R.S.O. 1990, c. 0.1 and Ontario Regulations for Construction Projects, O. Reg. 213/91. .2 If diving is required, comply with Ontario Occupational Health and Safety Act, Regulation 629/94.
1.12 UNFORSEEN HAZARDS .1 Should any unforeseen or peculiar safety-related factor, hazard, or condition become evident during performance of Work, immediately stop work and advise Departmental Representative verbally and in writing. .2 Follow procedures in place for Employee's Right to Refuse Work as specified in the Occupational Health and Safety Act for the Province of Ontario.
1.13 HEALTH AND SAFETY COORDINATOR .1 Employ and assign to Work, competent and authorized representative as Health and Safety Coordinator. Health and Safety Coordinator must: .1 Have site-related working experience specific to activities associated with similar dam reconstruction projects. .2 Have working knowledge of occupational safety and health regulations. .3 Be responsible for completing Contractor’s Health and Safety Training. Sessions and ensuring that personnel not successfully completing required training are not permitted to enter site to perform Work .4 Be responsible for implementing, enforcing daily and monitoring site-specific Contractor’s Health and Safety Plan. .5 Be on site during execution of Work and report directly to Site Supervisor. .6 Health and Safety Coordinator must not be Site Supervisor.
1.14 POSTING OF DOCUMENTS .1 Ensure applicable items, articles, notices and orders are posted in conspicuous location on site in accordance with Acts and Regulations of Province having jurisdiction, and in consultation with Departmental Representative. .2 Provide documents as follows and post on site: .1 Contractor’s Health and Safety Policy. .2 Contractor’s Name. .3 Notice of Project. .4 Name, trade, and employer of Health and Safety Coordinator. .5 Ministry of Labour orders and reports. .6 Occupational Health and Safety Act and Regulations for Construction Projects for Province of Ontario. .7 Address and phone number of nearest Ministry of Labour office. .8 Material Safety Data Sheets. .9 Written Emergency Response Plan. 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 6
.10 Site Specific Health and Safety plan. .11 Copy of valid certificate of first-aid personnel on duty. .12 WSIB “In Case of Injury At Work” poster. .13 Location of toilet and cleanup facilities. .14 Any specific handling or procedures specific to the site. .3 Comply with Provincial general posting requirements.
1.15 CORRECTION OF NON-CONFORMANCE .1 Immediately address health and safety non-compliance issues identified by authority having jurisdiction or by Departmental Representative. .2 Provide Departmental Representative with written report of action taken to correct non- compliance of health and safety issues identified. .3 Departmental Representative may stop Work if non-compliance of health and safety regulations or a potential issue is not corrected.
1.16 BLASTING .1 Blasting or other use of explosives is not permitted without prior receipt of written instruction by Departmental Representative.
1.17 POWDER ACTUATED DEVICES .1 Use powder actuated devices only after receipt of written permission from Departmental Representative.
1.18 WORK STOPPAGE .1 Give precedence to safety and health of public and site personnel and protection of environment over cost and schedule considerations for Work. .2 Assign responsibility and obligation to Health and Safety Coordinator to stop or start Work when, at Health and Safety Coordinator’s discretion, it is necessary or advisable for reasons of health or safety. Departmental Representative or his/her designate may also stop Work for health and safety considerations
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used. 14-1538-002 Section 01 35 29 June 2016 Health and Safety Requirements Drag Lake Dam Rehabilitation Page 7
END OF SECTION Parks Canada Site Specific Safety Plan Parcs Canada
SITE SPECIFIC SAFETY PLAN
General Contractor Name:
Project Name:
Project Location:
Date:
1. General Contractor Health and Safety Personnel
Position Name Cell Phone Site Superintendent
Site Foreman
Safety Representative
2. Main Site Activities or Tasks
Number Description 1
2
3
4
5
1 Parks Canada Site Specific Safety Plan Parcs Canada
3. Activity Hazards and Mitigation Measures
Activity Activity Hazards Control Measures to Mitigate Identified Required No. Description Hazards Training/Certification and Equipment 1
2
3
2 Parks Canada Site Specific Safety Plan Parcs Canada
Activity Activity Hazards Controls Measures to Mitigate Identified Training/Certification No. Description Hazards Required 4 .
5
6
3 Parks Canada Site Specific Emergency Parcs Canada Response Plan
SITE SPECIFIC EMERGENCY RESPONSE PLAN
1. Emergency Contact List
Fire: 9-1-1 Ambulance: 9-1-1 Police: 9-1-1
Contractor Name: Phone: ( )
Main Office Address:
Site Superintendent: Cell Phone1: ( )
Site Foreman: Cell Phone1: ( )
Safety Representative: Phone: ( )
1 On-Site personnel listed as emergency contacts are to be readily available by cell phone at all times while job site is active.
Parks Canada Project Manager: Cell Phone: ( )
Parks Canada Site Manager: Cell Phone: ( )
2. Emergency Response
In the event of an injury on the site the following emergency procedure shall be followed:
1) Secure the area and make the casualty safe from further injury.
2) Administer first aid immediately. (NOTE: First Aid kits are located in the .
3) Have the nature and severity of the injury assessed by a person qualified in first aid. (NOTE: The following personnel are qualified in first aide: .
4) Transport the casualty to receive medical attention immediately.
Minor Injury: The casualty will be transported by company vehicle to the nearest hospital 2.
2 Map and/or directions to nearest hospital emergency room is attached.
Major (Life or Non - Life Threatening Injury): Dial 9 - 1 - 1 to dispatch an ambulance.
Direct the ambulance to the project site: (list address of the project site)
5) Report the incident to the site foreman, site supervisor and Parks Canada Project Manager.
6) Assign a worker to meet the ambulance at the main entrance to the facility and direct them to the work area.
1 Parks Canada Site Specific Safety Policy Parcs Canada
SITE SPECIFIC SAFETY HAZARDS REVIEW AND SAFETY PLAN POLICY
Project Name:
We, are committed to identifying and controlling safety hazards on the project. By completing the Site Specific Safety Plan and the Emergency Response Plan and following applicable Health and Safety Regulation requirements, we accept responsibility to enforce the hazard control measures to protect the general health and safety of all persons on the job site and surrounding areas that may become affected as a result of the work.
Responsibilities
Management (Prior to Commencement of Work and Ongoing)
1. Initialize development of Site Specific Safety Plan and Emergency Response Plan.
2. Designate site supervisor responsible for job safety.
3. Review and identify with supervisor all foreseeable safety hazards and indicate controls to eliminate or mitigate consequences of each.
4. Provide a signed copy of the completed Safety Hazard Review to the Parks Canada Departmental Representative for approval.
5. Provide all required training as part of methods of control.
6. Ensure actions are taken by supervisor and workers to address all hazards identified.
Supervisor (Ongoing)
1. Identify all foreseeable hazards to Management and provide recommendations on how to eliminate or control said hazards.
2. Discuss hazards and controls with workers and collect concerns. Ensure all workers read the Site Specific safety plan and understand its requirements. Keep a copy at the work site.
3. Respond to workers’ concerns immediately.
4. Ensure the form addresses the concern(s) and the actions to be taken. Revise form accordingly.
5. Provide any revised copies of the completed Safety Hazard Review Form to Parks Canada Departmental Representative for approval.
Worker (Ongoing)
1. Inspect workplace for perceived hazards prior to work.
2. Report any perceived hazards that may be un-addressed verbally to the site supervisor.
1 Parks Canada Site Specific Safety Policy Parcs Canada
3. Provide recommendations to the supervisor on how to eliminate or control the hazards.
4. Inform management immediately if the supervisor does not respond to concerns.
Contractor Agreement
I, , on behalf of , confirm our commitment to health and safety on the job site. Methods of hazards control as identified in this Safety Hazards Review and applicable safety regulations will be enforced for the duration of work.
Signature Company Representative Date
Site Specific Safety Plan Received By:
Parks Canada Departmental Date Representative
The Departmental Representative, on behalf of Parks Canada, reserves the right to stop work at any time if it is deemed that methods of control are not being properly enforced and/or do not adequately address the needs of the hazards as identified in this Safety Hazards Review, as well as if any unforeseen hazards arising during work are being overlooked.
2 Attestation and Proof of Compliance with Occupational Health and Safety (OHS)
Submission of this completed form, satisfactory to Parks Canada, is a condition of gaining access to the work place.
Instructions: Prime contractor must sign this form for all projects undertaken at Parks Canada work places.
This form is to be administered by the Project Manager and completed by the Prime Contractor AFTER contract award.
Parks Canada recognizes that federal OHS legislation places certain specific responsibilities upon Parks Canada as owner of the work place. In order to meet those responsibilities, Parks Canada is implementing a contractor safety regime that will ensure that roles and responsibilities assigned under Part II of the Canada Labour Code and the Canada Occupational Health and Safety Regulations are implemented and observed when involving contractor(s) to undertake works in Parks Canada work places.
Parks Canada Responsible Authority/Project Lead Address Contact Information
Project Manager/Contracting Authority (delete as required)
Prime Contractor
Subcontractor(s) (add additional fields as required)
Location of Work
General Description of Work to be Completed
Page 1 of 2 Mark “Yes” where applicable.
A meeting has been held to discuss hazards and access to the work place and all known and foreseeable hazards have been identified to the contractor and/or subcontractor(s) The contractor and/or its subcontractor(s) will comply with all federal and provincial/territorial legislation and Parks Canada's policies and procedures, regarding occupational health and safety. The contractor and/or its subcontractor(s) will provide all prescribed safety materials, equipment, devices and clothing. The contractor and/or its subcontractor(s) will ensure that its employees are familiar with and use all prescribed safety materials, equipment, devices and clothing at all times. The contractor and/or its subcontractor(s) will ensure that its activities do not endanger the health and safety of Parks Canada employees. The contractor and/or its subcontractor(s) has inspected the site and has carried out a hazard assessment and has put in place a health and safety plan and informed its employees accordingly, prior to the commencement of the work. Where a contractor and/or its subcontractor(s) will be storing, handling or using hazardous substances in the work place, it will place warning signs at access points warning persons of the presence of the substances and any precautions to be taken to prevent or reduce any hazard of injury or death. The contractor and/or its subcontractor(s) will ensure that its employees are instructed in respect of any emergency procedures applicable to the site.
I, ______(contractor), certify that I have read, understood and attest that my firm, employees and all sub-contractors will comply with the requirements set out in this document and the terms and conditions of the contract.
Name ______Signature ______
Date ______
Page 2 of 2 14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Parks Canada EIA Best Management Practice for Project Site Dewatering .2 Parks Canada Basic Impact Analysis (BIA) .3 Parks Canada Suggested Project Site-Specific Environmental Management Plan Contents – Requirements of EMP for Small Projects .4 Parks Canada EIA Best Management Practice for Dam Safety Boom Installation .5 Parks Canada EIA Best Management Practice for Working with Concrete in/around Water .6 Parks Canada EIA Best Management Practice for Vegetation Removal
1.2 REFERENCES .1 Definitions: .1 Environmental Pollution and Damage: presence of chemical, physical, biological elements or agents which adversely affect human health and welfare; unfavourably alter ecological balances of importance to human life; affect other species of importance to humans; or degrade environment aesthetically, culturally and/or historically. .2 Environmental Protection: prevention/control of pollution and habitat or environment disruption during construction. .2 Reference Standards: .1 U.S. Environmental Protection Agency (EPA)/Office of Water .1 EPA 832/R-92-005-92, Storm Water Management for Construction Activities, Chapter 3. .2 EPA General Construction Permit (GCP) 2012.
1.3 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Submit all environmental inspection reports and testing results within 24 hours of inspection or testing. .3 Product Data: .1 Submit manufacturer's instructions, printed product literature and data sheets for admixtures, curing compounds, grouts and include product characteristics, performance criteria, physical size, finish and limitations. .2 Submit 2 copies of WHMIS MSDS in accordance with Section 01 35 29 - Health and Safety Requirements. .4 The mitigation as identified in the Drag Lake Dams BIA shall be adhered to.
14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 2
.5 Before commencing construction activities or delivery of materials to site, submit Environmental Protection Plan for review and approval by Departmental Representative and/or independent environmental representative hired by PCA. Environmental Protection Plan shall be prepared by a qualified environmental consultant. Contractor shall refer to Parks Canada BIA when preparing their Environmental Protection Plan. .6 Allow up to ten (10) working days for Departmental Representative's review of each submission. .7 Construction shall not be commenced prior to the approval of Environmental Protection Plan by Departmental Representative. .8 Any works conducted prior to the approval of Environmental Protection Plan will be stopped at no cost to PCA until approval of Environmental Protection Plan and mitigation measures taken in place to the satisfaction of Departmental Representative. .9 Environmental Protection Plan must include comprehensive overview of known or potential environmental issues to be addressed during construction. .10 Address topics at level of detail commensurate with environmental issue and required construction tasks. .11 Include in Environmental Protection Plan: .1 Names of persons responsible for ensuring adherence to Environmental Protection Plan. .2 Names and qualifications of persons responsible for manifesting hazardous waste to be removed from site. .3 Names and qualifications of persons responsible for training site personnel. .4 Descriptions of environmental protection personnel training program. .5 Erosion and sediment control plan identifying type and location of erosion and sediment controls to be provided including monitoring and reporting requirements to assure that control measures are in compliance with erosion and sediment control plan, Federal, Provincial, and Municipal laws and regulations. .6 Drawings indicating locations of proposed temporary excavations or embankments for haul roads, stream crossings, material storage areas, structures, sanitary facilities, and stockpiles of excess or spoil materials including methods to control runoff and to contain materials on site. .7 Traffic Control Plans including measures to reduce erosion of temporary roadbeds by construction traffic, especially during wet weather. .1 Plans to include measures to minimize amount of material transported onto paved public roads by vehicles or runoff. .8 Work area plan showing proposed activity in each portion of area and identifying areas of limited use or non-use. .1 Plan to include measures for marking limits of use areas and methods for protection of features to be preserved within authorized work areas. .9 Spill Control Plan to include procedures, instructions, and reports to be used in event of unforeseen spill of regulated substance. .10 Non-Hazardous solid waste disposal plan identifying methods and locations for solid waste disposal including clearing debris.
14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 3
.11 Air pollution control plan detailing provisions to assure that dust, debris, materials, and trash, are contained on project site. .12 Contaminant Prevention Plan identifying potentially hazardous substances to be used on job site; intended actions to prevent introduction of such materials into air, water, or ground; and detailing provisions for compliance with Federal, Provincial, and Municipal laws and regulations for storage and handling of these materials. .13 Waste Water Management Plan identifying methods and procedures for management and discharge of waste waters which are directly derived from construction activities, such as concrete curing water, clean-up water, hydro demolition water, dewatering of ground water, disinfection water, hydrostatic test water, and water used in flushing of lines. .14 Historical, archaeological, cultural resources biological resources and wetlands plan that defines procedures for identifying and protecting historical, archaeological, cultural resources, biological resources and wetlands. .15 Pesticide treatment plan to be included and updated, as required. .16 Fish rescue and relocation plan including measures to capture and relocate fish upstream and/or downstream of the dam, prior to dewatering, that may otherwise be harmed due to the dewatering and in-water works activities. Fish rescue and relocation shall be done by qualified environmental consultant with scientific collectors permit. .17 Water quality monitoring.
1.4 FIRES .1 Fires and burning of rubbish on site is not permitted.
1.5 DRAINAGE .1 Develop and submit Erosion and Sediment Control Plan (ESC) identifying type and location of erosion and sediment controls provided. Plan to include monitoring and reporting requirements to assure that control measures are in compliance with erosion and sediment control plan, Federal, Provincial, and Municipal laws and regulations, Erosion and Sediment Control Guidelines by Greater Golden Horseshoe Area Conservation Authorities, and EPA 832/R-92-005, Chapter 3. .2 Storm Water Pollution Prevention Plan (SWPPP) to be substituted for erosion and sediment control plan. .3 Provide temporary drainage and pumping required to keep excavations and site free from water. .4 Ensure pumped water into waterways, sewer or drainage systems is free of suspended materials or contaminants. .5 Discharge any water over energy dissipation mats to reduce potential erosion and control sedimentation before water re-enters any water body or watercourse. .6 Control disposal or runoff of water containing suspended materials or other harmful substances in accordance with local authority requirements. Monitor pH and turbidity. Turbidity shall not exceed the Canadian Water Quality Guidelines for the Protection of Aquatic Life.
14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 4
1.6 SITE CLEARING AND PLANT PROTECTION .1 Protect trees and plants on site and adjacent properties as indicated. .2 Protect trees and shrubs adjacent to construction work, storage areas and trucking lanes, and encase with protective wood framework from grade level to height of 2 m minimum. .3 Protect roots of designated trees to dripline during excavation and site grading to prevent disturbance or damage. .1 Avoid unnecessary traffic, dumping and storage of materials over root zones. .4 Minimize stripping of topsoil and vegetation. .5 Restrict tree removal to areas indicated or designated by Departmental Representative.
1.7 WORK ADJACENT TO WATERWAYS .1 Construction equipment to be operated on land only. .2 Waterways to be kept free of excavated fill, waste material and debris. .3 Should site conditions at the site indicate that there are unforeseen negative impacts to fish or their habitat, all works shall cease until the problem has been corrected and/or any required input can be obtained from PCA.
1.8 IN-WATER WORKS .1 Contractor shall submit proposed methodology, schedule, and list of equipments to Departmental Representative for review and approval prior to in-water works.
1.9 WORK RESTRICTION PERIODS .1 Migratory Bird Nesting Protection: .1 Do not schedule removal of vegetation between March 31 to July 31 to avoid destruction of active migratory bird nests, breeding, migrating/staging, hibernation or nursing periods. .2 If tree cutting and clearing work during the nesting seasons, a nest survey will need to be conducted by a qualified avian biologist immediately (within two days) prior to commencement of work to identify and locate active nests of species. .3 If active nest are present, the Contractor shall develop a mitigation plan to address any potential impact on migratory birds or their active nests. The plan will need to be reviewed by PCA prior to implementation. .2 Fish Habitat and Spawning Protection: .1 Do not schedule in-water works between March 15 and July 15 to avoid fish spawning restriction. .2 Any work done within the in-water works restriction period as defined above, will require an exemption from PCA. .1 Contractor shall submit document outlining work to be completed, reason to complete work during restriction period, applicable drawings, and mitigation measures.
14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 5
1.10 POLLUTION CONTROL .1 Maintain temporary erosion and pollution control features installed under this Contract. .2 Control emissions from equipment and plant in accordance with local authorities' emission requirements. .3 Prevent sandblasting and other extraneous materials from contaminating air and waterways beyond application area. .1 Maximum increase of 8 NTU from background levels for any short term exposure (24 hour period). .2 pH of any discharge water shall be between 6.5 and 9.0. .3 Provide temporary enclosures as required and where directed by Departmental Representative. .4 Cover or wet down dry materials and rubbish to prevent blowing dust and debris. Provide dust control for temporary roads. .5 Spill of deleterious substances: .1 Immediately contain, limit spread and clean up in accordance with provincial regulatory requirements .2 Report immediately to Ontario Spills Action Centre: 1800-268-6060. .3 Further information on dangerous goods emergency cleanup and precautions including a list of companies performing this work can be obtained from the Transport Canada 24-hour number (613)-996-666 collect. .4 Using appropriate safety precautions collect liquid or solidify liquid with an inert, noncombustible material and remove for disposal. .5 Be responsible for all costs of cleaning up any spills to the satisfaction of the Departmental Representative. .6 Have an environmental emergency response plan in place and a spill kit readily available.
1.11 OPERATION AND MAINTENANCE OF EQUIPMENT .1 Provide drip trays to prevent the discharge of oil, grease, antifreeze, or any other materials into the ground. .2 Provide spill clean-up equipment and materials at all construction areas and on the barge(s). .3 Equipment and heavy machinery used to meet or exceed all applicable emission requirements. .4 Only eco or vegetable based oils shall be used in cluding but not limited to hydraulics and chain oil for saw. .5 Leave machinery running only while in actual use, except where extreme temperatures prohibit shutting machinery down. .6 Limit use of heavy equipment on local roadways.
14-1538-002 Section 01 35 43 June 2016 ENVIRONMENTAL PROCEDURES Drag Lake Dam Rehabilitation Page 6
1.12 NOTIFICATION .1 Departmental Representative will notify Contractor in writing of observed noncompliance with Federal, Provincial or Municipal environmental laws or regulations, permits, and other elements of Contractor's Environmental Protection plan. .2 Contractor: after receipt of such notice, inform Departmental Representative of proposed corrective action and take such action for approval by Departmental Representative. .1 Take action only after receipt of written approval by Departmental Representative. .3 Departmental Representative will issue stop order of work until satisfactory corrective action has been taken. .4 No time extensions granted or equitable adjustments allowed to Contractor for such suspensions.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 CLEANING .1 Progress Cleaning: clean in accordance with Section 01 74 11 - Cleaning. .1 Leave Work area clean at end of each day. .2 Ensure public waterways, storm and sanitary sewers remain free of waste and volatile materials disposal. .3 Final Cleaning: upon completion remove surplus materials, rubbish, tools and equipment in accordance with Section 01 74 11 - Cleaning.
END OF SECTION
April 2016
Parks Canada Basic Impact Analysis
1. PROJECT TITLE & LOCATION: a. Drag Lake Dams Concrete Rehab b. Access to the site is from Outlet Bay Lane, off Fred Jones Road via County Road 118; approximately 2 km east of the town of Haliburton 450 03’ 04” N, 780 28’ 33”W
Figure 1: Drag Lake dams location
2. PROPONENT INFORMATION Parks Canada, Trent-Severn Waterway National Historic Site P.O. Box 567, 2155 Ashburnham Drive Peterborough, ON K9J 6Z6
3. PROPOSED PROJECT DATES
Planned commencement: 2016-07-01 Planned substantial completion: 2017-02-28 Planned final completion: 2017-009-01
4. FILE NUMBERS
INTERNAL PROJECT FILE: 452691
Impact Assessment Tracking: TSW-2016-0007(I)
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5. PROJECT DESCRIPTION
Project Background Drag Lake Dams are located on the Drag River in the Burnt River watershed at the outlet of Outlet Bay (on Drag Lake). The Drag Lake Dams are comprised of two concrete structures: the North Dam and the South Dam. The two dams are separated by a center granite rock island. The North Dam comprises a one-sluice, stop-log controlled sluiceway, north and south gravity bulkhead sections and a wing wall to the south of the dam and perpendicular to it. The South Dam is comprised of a one-sluice, stop-log controlled sluiceway, a penstock intake structure and north and south gravity bulkhead structures. The dams act as a reservoir dam for the Trent-Severn Waterway (TSW) and control water levels on Drag Lake and Spruce Lake; in the Municipality of Dysalt et al., County of Halliburton.
Figure 2: Drag Lake North Dam Drag Lake South Dam
Project Scope
The Dam Safety Review for the dams required the following project scope to address deficiencies:
• Repair/reface concrete on the North and South Dams • Tremie concrete to extend the sill 0.5m upstream • Construct service gains • Install a raised walkway over the gravity bulkheads • Install new guardrails in all required locations • Install post-tensioned anchors on the North and South Dams • Install/replace signage as per the 2011 CDA Public Safety Guidelines. • Adjust orientation of safety booms to permit self-rescue. • Replace all winches with modernized winches (hand operated) including the winch stands.
In order to carry out the above scope of work the following project components were also assessed for their potential environmental impacts:
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• Vegetation removal requirements Vegetation removal is anticipated to be minimal. Select trees are physically in the way of construction activities and will be removed. Minor vegetation removal may be required in the lay down area (existing road/parking area on private land) and in the immediate vicinity of the dams. These requirements will be detailed in the contractors Environmental Management Plan and reviewed and approved by the PCA project manager and EIA officer.
• Coffer dam/dewatering requirements Work is expected to be conducted by barge on the south dam. Dewatering of the sluice will be conducted after the new sill is constructed immediately upstream of the dam and dewatering stop-logs installed.
The north dam repairs may be similarly conducted, however it is anticipated that full dewatering with a constructed coffer dam may be required at the boom location immediately upstream dewatering an area of approximately 200m2.
Downstream dewatering of the channels will likely occur after flow is stopped at each dam. The existing channel is comprised of bedrock cascades for approximately 30 m downstream to a point where the two channels connect.
• Diversion channel requirements Since there are two operable dams at this location work will be conducted on one while the other passes base flows downstream. Once work is complete on the first dam it will be operated while work is conducted on the second dam
• Laydown area and site access The barge will access the lake from the northeast end of Drag Lake at a public boat launch. The primary laydown area will be located on private land in the existing laneway area adjacent to the PCA access point to the dams. The center island area will be minimally impacted and the areas immediately downstream of the dams will be accessed by machinery.
• Concrete removal and new concrete placement Concrete will be removed from each structure by mechanical and/or hydraulic means and removed from the site. New concrete will be placed below the water (tremmie) for the new sills, and in the dry for the remaining repair work. Heavy Equipment will be required for this work. Concrete may be placed for boom anchors
• Sediment/rock removal for upstream work requirements Minor sediment removal is required in the area of the form placement for the sills. Minor rock relocation may be required for the cofferdam and boom placement.
• Barge work Launching the barge and travel across the lake will be required. Carrying materials and supplies may be required. Once the barge is in place in front of the dams means of stabilizing will be required.
Schedule
Work is expected to begin shortly after award in July and will be completed over the winter. If required, work may be conducted in two phases with the second commencing in mid to Late May in 2017 after Walleye spawn, if approved by PCA.
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BIA decision rational
This project was considered to be a low risk project because there are predictable environmental impacts for the concrete rehabilitation and associated work components including the following reasons:
• Existing and Draft Best Management Practices cover portions of the work (Boom Placement, vegetation removal, working with concrete and dewatering) • The nature of having the north and south dam allow for the operation of one during the rehabilitation of the other thereby eliminating the need for a bypass channel construction • The dewatering methodology for each dam has been reduced to a very small footprint (a few square meters) and if required a larger footprint of 200m2 can be conducted during the appropriate timing window fish for spawning and nursery periods • CRM issues are considered to be insignificant • There are no impacts on Terrestrial or Aquatic SAR within the projects area • Impacts on the downstream and upstream fishery can be fully mitigated • Terrestrial impacts can easily be mitigated
6. VALUED COMPONENTS POTENTIALLY AFFECTED
Water/Fish Fish species in Drag Lake and Drag River include, Rock bass, Smallmouth Bass, Brown Trout, Cisco, Lake Trout, White Sucker and Walleye (OMNRF fish-on-line). Known walleye spawning (from Head Lake) is located downstream of the dam located in the town of Haliburton. Maintaining sufficient flows during spawning is a limiting factor for success.
There are spawning areas for Lake Trout upstream of the dams however they are a considerable distance away and the project will have no impact on these areas and therefore, the cool/warm water timing restrictions will be used for the project (March 15 – July 15).
A NHIC search indicated Prickly Hornwart (Aquatic species under no protection) was in the vicinity of the Project however the project will not affect any aquatic vegetation.
Birds Drag Lake lies in the western portion of 10x10m UTM grid square 17PK99, used for the Atlas of the Breeding Birds of Ontario (http://www.birdsontario.org/atlas/index.jsp ). The bird list for square 17PK99 contains 124 separate species. Because vegetation will be disturbed, however minor, there is potential to affect breeding birds. For Environment Canada nesting zone C3, within which the project area lies, there are 84 species known to nest in open habitats and 84 species known to nest in forest habitats. The nesting period may be as early as end of March to the end of August, depending on species. For forest birds, which have the greatest potential to be disturbed, the primary nesting period falls between May 24th and July 22nd. The earliest nesting for smaller species
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occurs on April 2nd and ends as late as August 30th. Large birds of prey (raptors and owls) would potentially begin nesting as early as January and February.
There are four species that are listed federally or designated species at risk by COSEWIC: chimney swift (THR), barn swallow (THR-COSEWIC), bobolink (THR-COSEWIC), golden winged warbler (THR). There is no functional habitat for these species at this location. The study area for this project lies within a zone of identified Critical Habitat for Golden-winged Warbler (Vermivora chrysoptera) classified as Threatened under the Species at Risk Act (SARA).
Fauna Drag Lake lies in the grid square 17QK09. The Ontario Reptile and Amphibian Atlas Program (http://www.ontarionature.org/protect/species/herpetofaunal_atlas.php ) lists 18 species and 100 records (1980-2015). Table 1: Reptile and amphibian summary Turtles 2 species and 17 records Snapping Turtle† (7), Midland Painted Turtle (10)
Snakes 6 species and 15 records Dekay’s Brownsnake (1), Eastern Gartersnake (5), Eastern Ribbonsnake† (4) Ring- necked Snake (3) Northern Watersnake (1) Red-bellied Snake (1)
Lizard No records
Salamanders 2 species and 7 records Eastern Red-backed Salamander (3) Spotted Salamander (4)
Frogs and Toads 8 species and 61 records American Bullfrog (4) American Toad (9) Gray Treefrog (10). Green Frog (9) Mink Frog (1) Northern Leopard Frog (4) Spring Peeper (20) Wood Frog (4)
Species at risk The following table summarizes the federally and provincially listed species in the Drag Lake dam area Table 2: ESA/SAR species list Common Name Scientific COSEWIC SARA Status ESA Habitat Preferred Name Status Poten Habitat tial on Projec BIRDS i Golden- Vermivora Threatened Threatened Special No Regeneration areas winged chrysoptera Concern (old fields, hydro right- Warbler1 of- ways) surrounded by mature forest Chimney Swift3 Chaetura Threatened Threatened Threat Not Nests almost exclusively in pelagica ened likely man-made chimneys,
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Barn Swallow3 Hirundo Threatened No Status Threat Possib Nest almost exclusively rustica ened le on man-made structures Bobolink3 Dolichonyx Threatened No Status Threat No Bobolink nest in tall oryzivorus ened grass prairie and other open meadows, including hayfields.
Reptiles and Amphibians Snapping Turtle4 Chelydra Special Special Special Likely Usually found in large serpentina Concern Concern Concern bodies of water, but will Sometimes inhabit small ponds. Rarely leave water except to nest and migrate to overwintering habitat.
Eastern Ribbon- Thamnophis Special Special Special Possi The eastern ribbonsnake Snake sauritus Concern Concern Concern ble is semi-aquatic and is almost always found close to water, such as wetlands and the shorelines of lakes and rivers. The species may rely on forested areas to provide upland habitats that it uses for overwintering and birthing sites.
Soil & landforms The project site has sands, coarse loams and shallow soils over bedrock and rock.
Flora The area consists mainly of coniferous trees with underlying small deciduous trees and shrubs.
Cultural resources The cultural resource level of the Drag Lake dams is identified as “Other” in the former Cultural Resource Inventory prepared for the TSW in 1994-95. The designation “Other” was used to indicate that the resources were evaluated under the Cultural Resource Management Policy, but were not considered to meet the criteria to be recognized as a cultural resource for Parks Canada’s management purposes (either cultural resources of national historic significance / formerly known as Level I cultural resources - or cultural resources of other heritage value / formerly known as Level II cultural resources). Therefore, there is no cultural resource management obligations related to the North and South Dams. According to the CRM Policy (4.-b.), these resources should be managed under other policies, such as the management of materiel or real property and Parks Canada Asset Management Directive and Standards. However, after preliminary investigation and discussions, it has been determined that further historic research for the Haliburton Sector will be required in order to better understand this area, its heritage value, cultural resources, character-defining elements and landscapes.
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The general recommendations and guidelines for the rehabilitation of Drag Lake Dam that were considered and incorporated into the design include the following:
• Repairing deteriorated parts of constructed elements in a manner that is physically and visually compatible with the engineering work; • Repairing constructed elements or their components using recognized conservation methods. Repairs might include limited replacement in kind, or partial replacement with an appropriate substitute material, of irreparable or missing components, based on physical or documentary evidence.
The addition, modification and extension, components of project scope follow the guidelines which recommends:
• Balancing the need to alter constructed elements to meet current safety codes and standards with the need to preserve the heritage value of the work’s functionality and operation; • Designing and installing new mechanical or electrical systems or equipment when required for the continued use, in a manner that minimizes adverse effects on the cultural resource; • Adding new features to meet health, safety or security requirements, in a manner that conserves the constructed elements and minimizes impact on the heritage value of the engineering work; • Designing addition, modification and extension to a constructed element in a manner compatible with the engineering work and respects its heritage value.
Archeology There is known remnants of the previous timber dam located immediately upstream of the two existing dams. Mitigation may be required for this cultural resource and if required will be provided by CRM. See attached Archaeological Overview Assessment – Drag Lake Dams Rehabilitation – Budget 2014 Project RPA n°344
7. EFFECTS ANALYSIS
Water/Fish There is expected to be little to no effect on water resources due to the nature and scale of the project. In terms of project extent, it would be considered a “Low Risk” – a localized effect; a small portion of the ecological unit of Drag Lake. Since the project is to be a repair, there will be little change to the existing footprint of the dams.
The dewatering methodology for each dam has been reduced to a very small footprint (a few square meters). The proposed dewatering methods for construction involve the installation of a dewatering gain immediately upstream of the dam which does not require a large footprint coffer dam. The nature of having the north and south dam allow for the operation of one during the rehabilitation of the other thereby eliminating the need for a bypass channel construction. Should a cofferdam be required for the north dam, standard mitigation including turbidity control and fish relocation will be required as per the BMP for Dewatering. Fish are to be released upstream of the dam.
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The areas immediately downstream of each dam that may be dewatered during construction have little habitat value as there is a cascade/pool on bedrock. Fish removal will be conducted if required and fish placed in the downstream area.
The potential environmental effects of project activities on fish and fish habitat include interference with biological time periods (i.e., migration or spawning), the addition of suspended solids to the water column through erosion and sedimentation, temporary flow reduction and reduced oxygenation in the stream below the fixed-bridge, potential stranding of fish during dewatering and direct mortality of fish.
Erosion and sedimentation events may occur as a result of project activities, potentially increasing the amount of suspended solids in the water column. Such events can cause increased sediment loads potentially harming fish by altering foraging behavior and causing physical damage to gills and scales. Increased sediment loads can also smother benthic invertebrates (a primary food source for many fish species) and cover/infill course spawning habitat as silt settles.
Spills of fuels or hydraulic fluid from construction equipment could negatively impact surface water quality.
Despite the potential effects of project activities, with the proper implementation of mitigation measures to protect against sedimentation, to protect against spills, and to ensure work does not occur during sensitive timing windows, it is not anticipated that there will be residual negative impacts to aquatic resources.
All in-water works will be conducted outside the timing restriction of March 15 – July 15 to mitigate impacts to the spawning and nursery periods for fish approximately 2 km downstream in the village of Halliburton.
Water quality will not be diminished throughout the project and mitigation identified in the Working With Concrete BMP (Attached) will be followed.
Birds Migratory birds, their nests and eggs are protected under the Migratory Birds Convention Act (1994). Project works that are potentially disruptive activities to nesting birds, such as vegetation clearing, should be avoided during the nesting period.
Since the majority of the project area including staging areas are located on private land (exception of the dam) the impacts to existing trees and other flora will be minimized. A barge will be utilized to access the dam from the water, minimizing the need to move equipment through forested areas. Any Tree removal requirements will be done after August 27.
There is critical habitat for golden-winged warbler identified at the project area (Attachment 3). However, the project site is small, at the edge this identified zone and the October 2015 construction timing (fall/winter) will avoid negative impacts on this species, if it is still in the area. In addition the area does not meet the functional habitat requirements for this species.
Mitigation contained in the Vegetation Removal BMP (attached) will be followed to ensure impacts on Breeding birds is eliminated.
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Removal of vegetation surrounding the two dams will result in direct loss of habitat for migratory birds; however, the habitat loss is short-term (vegetation will grow back quickly) and negligible when looking at the amount of vegetation within the entire study area. Construction activity/disturbance also has the potential to displace foraging birds from around the project site, but the displacement will be temporary in duration and will cover a very small footprint.
Species at Risk As identified in Table 2, a number of species at risk have the potential to be present in the project area. For species that do not have critical habitat identified through a recovery strategy, either the planned works will not impact their habitat or individuals, or mitigation measures will be employed to protect individuals and their habitat.
Barn Swallow Although there is no evidence of Barn Swallow nesting under either dam in this project, general protection will be afforded by respecting the migratory bird nesting timing window of April 1st to August 27st. Work outside of this window will not impact nesting Barn Swallows.
Critical Habitat The Species at Risk Act (SARA) provides protection to all species at risk listed under Schedule 1 of the Act. Under SARA, critical habitat is defined as “the habitat that is necessary for the survival or recovery of a listed wildlife species and that is identified as the species’ critical habitat in the recovery strategy or in an action plan for the species”. Section 41 (1)(c) of SARA requires that recovery strategies include an identification of the species’ critical habitat to the extent possible, as well as examples of activities that are likely to result in its destruction. As outlined in Table 1, the project area lies in zones of critical habitat identified in the recovery strategy of Golden-winged Warbler.
Golden-winged Warbler The recovery strategy for Golden-winged Warbler (Environment Canada, 2014) defines nesting and foraging habitat for the Golden-winged Warbler as a variety of early successional forest types (or habitats that exhibit early successional characteristics) that include extensive patches of dense shrubby growth, interspersed with dense herbaceous growth and adjacent to a forested edge. When defining critical habitat for the Golden-winged Warbler, there are two main criteria to be considered; first, on the broader landscape scale, Golden-winged Warblers required 50-75% forest cover over a 5 km x 5 km area, and the forest must be primarily deciduous or mixed forest, with <30% coniferous. Second, within the appropriate forest habitat, nesting and foraging habitat includes in entire forest/open edge habitat as well as 200 m into the appropriate forest habitat and 200 m into the appropriate open/shrub habitat. The habitat at the project site does not meet the biophysical attributes of open/shrub critical habitat for Golden-winged Warbler so the loss of a few shrubs and trees will not impact the critical habitat of this species.
Turtles and Snakes Species at risk turtles and snakes may be encountered on site during construction. Exclusionary fencing shall be installed around the worksite to prevent turtles and snakes from entering the site; however, exclusionary fencing is not fail safe. If species at risk turtles and snakes are encountered, work in the area will cease and the Parks Canada Project Manager will be contacted to provide guidance.
Soil & landforms The project site has sands, coarse loams and shallow soils over bedrock and rock. There may be
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increased soil exposure on the laydown areas and areas immediately adjacent to the dam and wing- walls where workers will be staging, resulting in potential for erosion and downslope watercourse sedimentation. Also machinery traffic on unpaved roads can lead to stability and potential erosion.
Placement of any dredged material from immediately upstream of the dam can cause unwanted sedimentation to adjacent areas including the lake and river downstream.
Working from the barge will minimize impacts from machinery on the soils. The laydown area is already an existing gravel roadway that will not be impacted from the machinery and materials. Any spoils transported by the barge will require mitigation to prevent any escaping into the water.
Terrestrial Vegetation Project activities will require the removal of a small amount of terrestrial vegetation immediately surrounding the two dams. The vegetation removed may include a few common trees, shrubs, and grasses. This loss of vegetation will be short-term in nature, since the area will be re-vegetated with native species after construction, and the amount of vegetation lost is negligible when looking the whole study area.
Fauna (specify, including SAR)
Two species of special concern, the snapping turtle and the eastern ribbonsnake have the potential to interact with the project area. Since the project activities are outside of the breeding season and basic exclusionary mitigation can be employed there is no expected impacts on the species.
Cultural resources
Drag Lake dams project is not required to meet requirements of the CRM Policy, it is clear that these dams have played an “important role in the early lumbering days, and later with the development of business, hydro development, and recreation use by cottagers”. For these reasons, although a cultural resource impact analysis won’t be required, we would recommend a holistic approach that would be in accordance with the Standards and Guidelines for the Conservation of Historic Places in Canada.
An Archeology assessment of the upstream original dam remnants will be conducted and any recommendations will be incorporated into the mitigation measures for the project.
8. MITIGATION MEASURES
Mitigation measures will primarily follow the following BMP’s : • Boom Installation • Vegetation Removal • Working with concrete • Dewatering
In addition to the above BMP’s the mitigation in Appendix A is specified
9. PUBLIC/STAKEHOLDER ENGAGEMENT & ABORIGINAL CONSULTATION
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9 a) Indicate whether public/stakeholder engagement was undertaken in relation to potential adverse effects of the proposed project: ☐ No ☒ Yes (describe the process to involve relevant parties and indicate how comments were taken into consideration).
Although not a formal consultative process, consultation with the local power company on how we can work with them to minimize disruption to their operations. We also consulted the private land owner on the project, identified their concerns and will formalize an agreement with the owner for the project.
9 b) Indicate whether Aboriginal consultation was undertaken in relation to potential adverse effects of the proposed project: ☒ No ☐ Yes (describe the process to involve relevant parties and how the results were taken into consideration).
Following internal review of the proposed project, a determination was made that the project would not impact Aboriginal or Treaty Rights and is considered routine maintenance on the infrastructure of the Trent Severn Waterway. No formal consultation was deemed necessary. In early April 2016 a letter was sent to the 7 Williams Treaties First Nations Chiefs advising them of the FIP projects and their status.
10. SIGNIFICANCE OF RESIDUAL ADVERSE EFFECTS
There are no residual adverse effects for this projects as the effects are well understood and appropriate mitigation will be employed.
11. SURVEILLANCE ☐ Surveillance is not required ☒ Surveillance is required (provide details such as the proposed schedule and the focus of inspections)
Surveillance and BMP monitoring will be conducted on all FII projects to ensure that environmental compliance is being maintained.
12. FOLLOW-UP MONITORING Follow-up monitoring is: ☒ not required ☐ legally required (e.g. under the Species at Risk Act or Fisheries Act) ☐ required in accordance with the Parks Canada Cultural Resource Management Policy
13. SARA NOTIFICATION Notification is: ☒ not required ☐ required under the Species at Risk Act (outline the nature of and response to any notification).
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Include Parks Canada experts. Add as many entries as necessary for the project. Department/Agency/Institution: Date of Request: 2016-02-08 OMNRF Expert's Name & Contact Information: Title: IRM Technical Specialist Kris Windover Expertise Requested: Fisheries information and permit requirements Response: Telephone conversation regarding timing windows. Walleye spawning to dam in the town of Haliburton. Spring flows are the limiting factor to success. Operations are the biggest factor in maintaining flows. Cold water timing restriction is not required for this project. This project should follow the cool water restrictions to protect the downstream walleye. No permit required.
Department/Agency/Institution: Date of Parks Canada, Species Conservation and Management, Request: May Natural Resource Conservation 19, 2016
Expert's Name & Contact Information: Title: Joanne Tuckwell Species Conservation Specialist Expertise Requested: Approach to assessing SAR Critical Habitat Response: Provided clarity to assessing critical habitat in general, and the habitat of Golden-winged Warbler in particular. Agreed that dam work would not have a negative impact on critical habitat.
Department/Agency/Institution: Date of Request: Parks Canada, March 22, 2016 Expert's Name & Contact Information: Title: Natalie Desrosiers Federal Infrastructure CRM officer Expertise Requested: CRM assessment of the Drag Lake Dams area Response: Provided an overview of the history and archaeological potential of the Drag Lake Dams
15. DECISION Taking into account implementation of mitigation measures outlined in the analysis, the project is: ☒ not likely to cause significant adverse environmental effects. ☐ likely to cause significant adverse environmental effects.
NOTE: If the project is identified as likely to cause significant adverse effects, CEAA 2012 prohibits approval of the project unless the Governor in Council (Cabinet) determines that the effects are justified in the circumstances. A finding of significant effects therefore means the project CANNOT go ahead as proposed.
FOR SARA REQUIREMENTS: ☐ There are no residual adverse effects to species at risk and therefore the SARA-Compliant Authorization Decision Tool was not required OR, the SARA-Compliant Authorization Decision Tool (Appendix 2) was used and determined:
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☐ There is no contravention of SARA prohibitions ☐ Project activities contravene a SARA prohibition and CAN be authorized under SARA ☐ Project activities contravene a SARA prohibition and CANNOT be authorized
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16. RECOMMENDATION AND APPROVAL (Add additional blocks as required) Prepared by: Date: 2016-06-20 EIA author (name & position): Christopher Strand, EA Officer
Recommended by: Date: 2016-06-20 Functional manager of the project (name): Valerie Minelga
Approved by: Date: YYYY-MM-DD Name & position: (Field Unit Superintendent, Director of a Waterway): Jewel Cunningham
Signature:
17. ATTACHMENTS
18. NATIONAL IMPACT ASSESSMENT TRACKING SYSTEM ☒ Project registered in tracking system ☐ Not yet registered (CEAA 2012 requires PCA submit a report to Parliament annually. EIAs must be entered in the tracking system by the end of April to enable reporting.
***Ensure that all required mitigation measures and conditions (e.g. follow-up monitoring requirements) are included in project permits and authorizations***
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Appendix 1 Environmental Impact Analysis Tools: Effects Identification Matrix
Section A focuses on direct effects of the project and Section B on indirect effects that are caused by changes to the environment.
A. Direct Effects Valued components potentially directly affected by the proposed project Natural Resources Cultural Resources
rossings,
c (specify, Air etc.) values values Flora (specify, including SAR) including SAR) Insert heritage Insert heritage Fauna Water (surface, Soil & landforms ground, ground,
Associated Phase Activities Supply and storage of ☐ ☒ ☒ ☒ ☐ ☐ ☐ materials Burning ☐ ☐ ☐ ☐ ☐ ☐ ☐ Clearing ☐ ☒ ☐ ☒ ☒ ☐ ☐ Demolition ☐ ☐ ☒ ☐ ☒ ☐ ☐ Disposal of ☐ ☐ ☒ ☐ ☐ ☐ ☐ waste Blasting/ Drilling ☐ ☐ ☐ ☐ ☐ ☐ ☐ Dredging ☐ ☒ ☒ ☐ ☒ ☐ ☐
Drainage ☐ ☒ ☒ ☐ ☐ ☐ ☐ Excavation ☐ ☐ ☐ ☐ ☐ ☐ ☐ Grading ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐ ☐
/ Operation / Decommissioning Backfilling
Use of ☒ ☐ ☒ ☐ ☐ ☐ ☐ machinery
Project Components Project Transport of ☐ ☒ ☒ ☐ ☐ ☐ ☐ materials/ equipment Building of fire ☐ ☐ ☐ ☐ ☐ ☐ ☐ breaks Use of ☐ ☐ ☒ ☐ ☐ ☐ ☐
Preparation / Construction / Preparation Chemicals Set up of ☐ ☒ ☒ ☒ ☒ ☐ ☐ temporary facilities Other… ☐ ☐ ☐ ☐ ☐ ☐ ☐
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A. Direct effects continued
Valued components potentially affected by the proposed project Natural Resources Cultural Resources
(specify,
Air etc.) values values Flora (specify, including SAR) including SAR) Insert heritage Insert heritage Water (surface, Fauna Soil & landforms ground, crossings,
Examples of Phase Associated Activities Waste disposal ☐ ☐ ☐ ☐ ☐ ☐ ☐ Wastewater ☐ ☐ ☒ ☒ ☒ ☐ ☐ disposal Maintenance ☐ ☐ ☐ ☐ ☐ ☐ ☐ Use ☐ ☐ ☐ ☐ ☐ ☐ ☐ Use/Removal of ☐ ☒ ☐ ☒ ☐ ☐ ☐ / Operation / temporary facilities Use of ☐ ☐ ☐ ☐ ☐ ☐ ☐ Chemicals Active fire stage ☐ ☐ ☐ ☐ ☐ ☐ ☐
Decommissioning Prescribed burn ☐ ☐ ☐ ☐ ☐ ☐ ☐ Project Components Project cleanup Planting ☐ ☒ ☐ ☐ ☐ ☐ ☐ Culling ☐ ☐ ☐ ☐ ☐ ☐ ☐ Preparation / Construction / Preparation Vehicle Traffic ☐ ☐ ☐ ☐ ☐ ☐ ☐ Other… ☐ ☐ ☐ ☐ ☐ ☐ ☐
16
June 2015
B. Indirect Effects (all phases) Impacts as a result of changes to the environment With respect to With respect to visitor experience With respect to Aboriginal non-Aboriginal peoples: peoples: Health and Health & Current use of Access & Recreation & Safety socio-economic socio- lands and services accommod’n conditions economic resources for opportunities conditions traditional purposes Natural resource Phase components affected by the project Could impacts to air ☐ ☐ ☐ ☐ ☐ ☐
lead to adverse effects on… Could impacts to soils ☐ ☐ ☐ ☐ ☐ ☐ and landforms lead to adverse effects on… Could impacts to water ☒ ☒ ☐ ☐ ☒ ☐
decommissioning (e.g. surface, ground water and water
/construction crossings) lead to adverse effects on… Could impacts to flora ☐ ☐ ☐ ☐ ☐ ☐ (including SAR) lead to reparation reparation implementation/ adverse effects on… P Could impacts to fauna ☐ ☐ ☐ ☐ ☐ ☐ (including SAR) lead to adverse effects on… operation/ ☐ ☐ ☐ ☐ ☐ ☐ Other…
17
June 2015
Appendix A: Project Mitigation
General 1. Inform Environmental Officer, Christopher Strand - Trent-Severn Waterway in Peterborough (705) 750-4931 regarding any changes to project plans and/or scheduling. Any changes not assessed under this Basic Impact Analysis will require approval from PCA and may require further mitigation measures; 2. Project commencement upon submission and Parks Canada approval of an Environmental Management Plan (EMP) that outlines all the measures to be implemented by the contractor on the project site to eliminate or reduce environmental effects; 3. The Parks Canada Environmental Officer, Trent-Severn Waterway will outline all the following mitigation measures, including those found in BMP’s, in a construction start- up meeting with the project manager and the contractor, to ensure that all on-site personnel are aware of these mitigation measures; 4. Should conditions at the work site indicate that there are unforeseen negative impacts to fish, wildlife or cultural resources at any time, all works shall cease and Parks Canada shall be contacted immediately (Christopher Strand – (705) 750-4931). The Rideau Canal has the right to require that work be altered or ceased immediately.
Staging Area 5. All machinery and equipment shall be clean, free of leaks, in optimal working condition; 6. Use well‐maintained heavy equipment and machinery, preferably fitted with fully functional emission control systems/muffler/exhaust baffles, engine covers, etc.; machines shall not be left to unnecessarily idle in order to avoid emissions; 7. Maintain equipment to avoid leakage of fuels and liquids and ensure measures are in place to minimize impacts of accidental spills; 8. Maintain equipment to avoid leakage of fuels and liquids. Ensure measures are in place to minimize impacts of accidental spills; an emergency spill kit shall be kept on-site and employed immediately should a spill occur. In case of a spill, the Ontario Spill Action Centre shall be notified immediately at 1-800-268-6060 and the Parks Canada Project Manager shall also be notified; Should a spill occur, further mitigation and/or remediation measures may be required; 9. Store all oils, lubricants, fuels and chemicals in secure areas on impermeable pads; 10. Refuelling of equipment and maintenance shall be conducted off slopes and away from water bodies on impermeable pads to allow full containment of spills at a recommended distance of 30 meters from any watercourse; 11. There shall be no discharge of chemicals and cleaning agents in or near aquatic habitats, all such substances shall be disposed of at a facility licensed to receive them; 18
June 2015
12. No tools, equipment, temporary structures or parts thereof, used or maintained for the purpose of this project, shall be permitted to remain at the site after completion of the project; 13. Provide turtle exclusionary fencing and/or erosion and sediment control fencing as required.
Access road construction/infill areas (if required) 14. Use clean approved fill with negligible fines; 15. No acid-bearing rock shall be used.
Fish & fish habitat 16. Coffer dam installation to remain outside the in-water work restriction for cool and warm water species (March 15 to July 15); 17. All work is to be completed in the dry except where otherwise assessed above. A Dewatering Plan shall be submitted to Parks Canada for review and approval prior to any dewatering; 18. Any fish be found within the dewatered area will be removed and placed downstream. The Parks Canada Environmental Assessment Officer shall be advised 24 hours prior to fish rescue; 19. CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life will form the baseline for water and streambed quality; 20. Maximum increase of suspended sediment concentrations by more than 25 mg L-1 over background levels during any short-term exposure period (e.g., 24-h). For longer term exposure (e.g., 30 d or more), average suspended sediment concentrations shall⋅ not be increased by more than 5 mg L-1 over background levels;
21. Maximum increase of 8 NTU from⋅ background levels for a short-term exposure (e.g., 24- h period). Maximum average increase of 2 NTU from background levels for a longer term exposure (e.g., 30-d period); 22. All debris on bed (including unused aggregate/concrete rubble) shall be completely removed and area restored to original state upon completion of work.
Water Quality 23. Ontario Drinking Water Quality Guidelines cannot be exceeded (beyond parameters that currently exist) due to project activities.
Vegetation removal/road construction 24. Limited tree removal is expected. The trees that require removal should be discussed with PCA Environmental Assessment Officer prior to removal;
19
June 2015
25. Migratory birds, their nests and eggs are protected under the Migratory Birds Convention Act (1994). Project works or activities are potentially disruptive activities to birds and should be avoided during breeding times. No vegetation shall be removed from April 1st to August 27th to protect nesting birds. Given the proposed timing of the project, vegetation clearing should not be an issue. 26. If bird nests, other than pigeon, are found on either bridge structure, the Parks Canada Environmental Assessment Officer at (705) 750-4931 or [email protected] for guidance on how to proceed; 27. Sediment and erosion control measures shall be implemented prior to work and maintained during the work phase, to prevent entry of sediment into the water where site access or other activities cause exposed soil; 28. All sediment and erosion control measures shall be inspected daily to ensure they are functioning properly and are maintained and/or upgraded as required to prevent entry of sediment into the water; 29. If sediment and erosion control measures are not functioning properly, no further work shall occur until the sediment and/or erosion problem is addressed; 30. All disturbed areas of the work site shall be stabilized immediately with erosion protection. All exposed areas should be covered with erosion control blankets or other measures such as mulch to keep the soil in place and prevent erosion until vegetated in the spring; 31. Sediment and erosion control measures shall be left in place until all areas of the work site have been stabilized; 32. Upon completion of the work all debris shall be completely removed and the area restored to its original state or better. Repair all damages to property due to project activities; 33. All materials and equipment used for the purpose of site preparation and project completion shall be operated and stored in a manner that prevents any deleterious substance (e.g. petroleum productions, debris etc.) from entering the water; 34. Any stockpiled materials shall be stored and stabilized a safe distance away from any watercourse, drainage course or swales to prevent erosion and subsequent entry into the water body OR removed from the site, in accordance with all federal, municipal and provincial regulations.
Species at Risk 35. The EMP must detail procedures (e.g. exclusion fencing) for preventing turtle entry/nesting within disturbed project gravels/soils should the project activity extend into the breeding season; 36. The EMP must demonstrate procedures for avoiding disturbance/harm to wildlife;
20
June 2015
37. If applicable (spring to early summer), the EMP must demonstrate procedures for avoiding disturbance/harm to nesting birds; 38. Should any suspected species at risk be encountered or if there is potential to negatively impact SAR (or wildlife generally), contact PCA EA staff (705) 750-4931 for guidelines on how to proceed; 39. Species at risk training shall be provided to all employees before they begin work on site (materials can be part of the Environmental Protection Plan). Employees must be able to identify potential species at risk and know the proper procedures to follow when they encounter a species at risk. Noise 40. Monitor and mitigate public complaints by keeping a record of complaints and addressing any issues raised by the public. Cultural Resources 41. Forward all additional information and construction drawings for the Project to Parks Canada’s Terrestrial and Underwater Archaeology sections for further review; 42. As per the Ontario Heritage Act and the Ministry of Tourism, Culture and Sport, a Stage 1 Archaeological Assessment is required for all Project lands not under federal jurisdiction. The recommendations from the Stage 1 Archeaological Assessment, or subsequent assessments, are to be complied with in conjunction with the attached Archaeological Overview Assessment by Parks Canada; 43. Coffer dams should not be installed on top of any submerged cultural resources, wherever possible; 44. The remnans of the historical dams have historical value and should not be impacted during the Project. This historical value should also be accounted for in any future hydraulic modeling of water flows through these sections to minimize impacts to the resource; 45. Should any historical dam(s) be exposed during de-watering activities, it is recommended that archaeological recording of the historical feature(s) be undertaken, in conjunction with provincial and federal archaeological requirements (when applicable). Archaeological recording of the feature(s) will include documenting the location and physical characteristics of the feature(s), and recording the construction techniques through scaled drawings, photographs and archaeological site plan, in an attempt to determine the age of the feature(s) and to contribute to the knowledge of the site. 46. If unrecorded archaeological resources (i.e. structural remains and/or artifact concentrations) or any other cultural resource be encountered, work shall cease until the item can be reviewed by a PCA or PCA appointed archaeologist, the situation reviewed and direction for mitigation measures is provided to the Environmental Assessment Coordinator and Project Manager. Ensure that all exposed underwater cultural materials are kept submerged and/or wet while waiting for direction.
21
June 2015
Erosion Control 47. Mandatory submission – and approval by Parks Canada – of an Erosion and Sediment Control Plan, as stand along or part of the EMP, demonstrating: a) The area to be controlled. In addition to the construction site, it is necessary to identify adjacent areas that could be negatively impacted by construction activities; b) Drainage areas and patterns based on pre-construction topography and construction design; c) How sediment-laden run-off will be directed to detention or retention facilities on-site. Large drainage areas can produce a significant amount of run-off, resulting in a need for large detention or retention structures; d) How clean storm run-on will be diverted around the site and away from exposed areas; e) Channels that are designed and constructed to the necessary design discharge; f) Temporary and permanent erosion control needs for all drainage channels; g) Consideration of project schedule in selecting, designing and laying out environmental controls; h) Consideration of seasonal requirements (for longer-term projects); select and design controls and practices for controlling erosion and sedimentation including shutdown periods.
48. Avoid activity during excessively wet weather conditions; monitor forecasts for heavy rainfall watches & warnings; 49. Should conditions at the work site indicate that there are unforeseen create negative impacts to fish or their habitat, all work shall cease until the problem has been corrected and Environmental Assessment Officer 705-750-4931 has been consulted;
Waste Disposal 50. Recyclable material and waste shall be removed from the site, in accordance with all federal, provincial and municipal regulations, to disposal facilities licensed to receive them; 51. Waste generated will be disposed according to regulations (i.e., O. Reg. 102/94 and O. Reg. 558/00, R.R.O. 1990, 347).
Concrete 52. Concrete leachate is alkaline and highly toxic to fish and aquatic life. Measures must be taken to prevent any incidence of concrete or concrete leachate from entering the watercourse. Maintain complete isolation of all cast-in-place concrete and grouting from fish-bearing waters for a minimum of 48 hours if ambient air temperature is above 0°C and
22
June 2015
for a minimum of 72 hours if ambient air temperature is below 0°C or until significantly cured to allow the pH to reach neutral levels; 53. Ensure that all works involving the use of concrete will not deposit, directly or indirectly, sediments, debris, concrete, concrete fines, wash or contact water into or about any watercourse; 54. Wash equipment away from water and provide containment facilities for the wash-down water from concrete delivery trucks, concrete pumping equipment, and other tools and equipment; 55. Concrete debris shall be placed into an enclosed container daily, or more frequently if required; 56. Turbidity curtains shall be used to limit impact of pouring concrete on the surrounding water column 57. pH shall not to exceed 9 in the water column. Machinery around water 58. Operate machinery from stable location; 59. Only the working end of machinery shall directly enter the water. The working end of machinery will be clean and maintained free of leaks. Complete the in-water activity as quickly as possible to minimize the time equipment is in the water; do not leave equipment in water during breaks in work activity. Dam Commissioning 60. Stop logs will be placed to reduce flows through the sluices during demolition/removal of the old portions of the dam; 61. If elevated turbidity beyond 8 NTU from background levels for a short-term exposure (e.g., 24-h period) is observed, PCA will assess potential impact to the aquatic environment. A determination will be made by PCA as to whether subsequent flushing is permitted. If not, additional mitigation measures may be required; 62. Rock capping material may be placed inside the area of the downstream coffer dams, if necessary, in order to mitigate turbidity from the former construction area as it is re- flooded; 63. Turbidity curtains shall be placed on during coffer dam removal.
64. See additional attached BMPs for project activity mitigation measures:
o BMP: Working with Concrete in/around water o BMP for Project Site Dewatering o BMP for vegetation Removal o BMP for Safety Boom Installation
23
June 2015
24
June 2015
Appendix B: Photographs
North Dam
25
June 2015
South Dam
26
June 2015
South Dam Boom
27
June 2015
South Dam
28
June 2015
South Dam Cascade/pool (North Dam outflow on left)
29
June 2015
Laydown area in parking/roadway
30
14-1538-002 Section 01 45 00 June 2016 QUALITY CONTROL Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Not Used.
1.2 INSPECTION .1 Allow Departmental Representative and Consultant access to Work. If part of Work is in preparation at locations other than Place of Work, allow access to such Work whenever it is in progress. .2 Give timely notice requesting inspection if Work is designated for special tests, inspections or approvals by Departmental Representative instructions, or law of Place of Work. .3 If Contractor covers or permits to be covered Work that has been designated for special tests, inspections or approvals before such is made, uncover such Work, have inspections or tests satisfactorily completed and make good such Work. .4 Departmental Representative and Consultant may order part of Work to be examined if Work is suspected to be not in accordance with Contract Documents. If, upon examination such work is found not in accordance with Contract Documents, correct such Work and pay cost of examination and correction. If such Work is found in accordance with Contract Documents, Departmental Representative shall pay cost of examination and replacement.
1.3 INDEPENDENT INSPECTION AGENCIES .1 Independent Inspection/Testing Agencies will be engaged by Departmental Representative for purpose of inspecting and/or testing portions of Work. Cost of such services will be borne by Departmental Representative. .2 Provide equipment required for executing inspection and testing by appointed agencies. .3 Employment of inspection/testing agencies does not relax responsibility to perform Work in accordance with Contract Documents. .4 If defects are revealed during inspection and/or testing, appointed agency will request additional inspection and/or testing to ascertain full degree of defect. Correct defect and irregularities as advised by Departmental Representative at no cost to Departmental Representative. Pay costs for retesting and reinspection.
1.4 ACCESS TO WORK .1 Allow inspection/testing agencies access to Work, off site manufacturing and fabrication plants. .2 Co-operate to provide reasonable facilities for such access.
1.5 PROCEDURES .1 Notify appropriate agency and Departmental Representative in advance of requirement for tests, in order that attendance arrangements can be made. 14-1538-002 Section 01 45 00 June 2016 QUALITY CONTROL Drag Lake Dam Rehabilitation Page 2
.2 Submit samples and/or materials required for testing, as specifically requested in specifications. Submit with reasonable promptness and in orderly sequence to not cause delays in Work. .3 Provide labour and facilities to obtain and handle samples and materials on site. Provide sufficient space and facilities to store and cure test samples.
1.6 PRODUCTS .1 Products, materials, equipment (excluding construction equipments), and articles (referred to as products throughout specifications) incorporated in Work shall be new, not damaged or defective, and of best quality (compatible with specifications) for purpose intended. .2 Should any dispute arise as to quality or fitness of products, decision rests strictly with Department Representative based upon requirements of Contract Documents. .3 Unless otherwise indicated in specifications, maintain uniformity of manufacture for any particular or like item throughout the project. .4 Store packaged or bundled products in original and undamaged condition with manufacturer’s seal and labels intact. Do not remove from packaging or bundling until required in Work. .1 Unless otherwise indicated in specifications, install or erect products in accordance with manufacturer’s instructions. DO not reply on labels or enclosures provided with products. Obtain written instructions directly from manufacturers.
1.7 REJECTED WORK .1 Remove defective Work, whether result of poor workmanship, use of defective products or damage and whether incorporated in Work or not, which has been rejected by Departmental Representative or Consultant as failing to conform to Contract Documents. Replace or re-execute in accordance with Contract Documents. .2 Make good other Contractor's work damaged by such removals or replacements promptly. .3 If in opinion of Departmental Representative or Consultant it is not expedient to correct defective Work or Work not performed in accordance with Contract Documents, Owner will deduct from Contract Price difference in value between Work performed and that called for by Contract Documents, amount of which will be determined by Departmental Representative.
1.8 REPORTS .1 Submit electronic copy of inspection and test reports to Departmental Representative. .2 Provide copies to subcontractor of work being inspected or tested.
1.9 TESTS AND MIX DESIGNS .1 Furnish test results and mix designs as requested. 14-1538-002 Section 01 45 00 June 2016 QUALITY CONTROL Drag Lake Dam Rehabilitation Page 3
.2 Cost of tests and mix designs beyond those called for in Contract Documents or beyond those required by law of Place of Work will be appraised by Departmental Representative and may be authorized as recoverable.
1.10 MILL TESTS .1 Submit mill test certificates as required of specification Sections.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 52 00 June 2016 CONSTRUCTION FACILITIES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 REFERENCES .1 Canadian General Standards Board (CGSB) .2 Canadian Standards Association (CSA International) .1 CSA-A23.1-14/A23.2-14, Concrete Materials and Methods of Concrete Construction/Methods of Test and Standard Practices for Concrete. .2 CSA-0121-08(R2013), Douglas Fir Plywood. .3 CAN/CSA-S269.2-M92(R2013), Access Scaffolding for Construction Purposes. .4 CAN/CSA-S269.3-M92 (R2013), Concrete Formwork. .5 CAN/CSA-Z321-96(R2006), Signs and Symbols for the Occupational Environment. .6 CAN/CSA-Z797-09(R2014), Code of Practice for Access Scaffold.
1.2 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures.
1.3 INSTALLATION AND REMOVAL .1 Prepare site plan indicating proposed location and dimensions of area to be fenced and used by Contractor, number of trailers to be used, avenues of ingress/egress to fenced area and details of fence installation. .2 Identify areas which have to be gravelled to prevent tracking of mud. .3 Indicate use of supplemental or other staging area. .4 Provide construction facilities in order to execute work expeditiously. .5 Remove from site all such work after use.
1.4 SCAFFOLDING .1 Scaffolding in accordance with CAN/CSA-S269.2. .2 Provide and maintain scaffolding, ramps, ladders, and temporary stairs, (if applicable).
1.5 HOISTING .1 Provide, operate and maintain hoists/cranes required for moving of workers, materials and equipment. Make financial arrangements with Subcontractors for their use of hoists. .2 Hoists/cranes to be operated by qualified operator.
1.6 SITE STORAGE/LOADING .1 Confine work and operations of employees by Contract Documents. Do not unreasonably encumber premises with products. .2 Do not load or permit to load any part of Work with weight or force that will endanger Work. 14-1538-002 Section 01 52 00 June 2016 CONSTRUCTION FACILITIES Drag Lake Dam Rehabilitation Page 2
1.7 CONSTRUCTION PARKING .1 Limit parking of personal vehicle on-site. .2 Provide and maintain adequate access to project site. .3 If authorized to use existing roads for access to project site, maintain such roads for duration of Contract and make good damage resulting from Contractor’s use of roads.
1.8 SECURITY .1 Provide and pay for suitable measures and methods to guard site and contents of site after working hours and during holidays. To be submitted and approved by Department Representative.
1.9 OFFICES .1 Provide office heated to 22 degrees C, lighted 750 lx and ventilated, of sufficient size to accommodate site meetings and furnished with drawing laydown table. .2 Provide marked and fully stocked first-aid case in a readily available location. .3 Subcontractors to provide their own offices as necessary.
1.10 EQUIPMENT, TOOL AND MATERIALS STORAGE .1 Provide and maintain, in clean and orderly condition, lockable weatherproof sheds for storage of tools, equipment and materials. .2 Locate materials not required to be stored in weatherproof sheds on site in manner to cause least interference with work activities.
1.11 SANITARY FACILITIES .1 Provide sanitary facilities for work force in accordance with governing regulations and ordinances. .2 Post notices and take precautions as required by local health authorities. Keep area and premises in sanitary condition.
1.12 CONSTRUCTION SIGNAGE .1 Provide and erect project sign, within three weeks of signing Contract, in a location designated by Departmental Representative. .2 Construction sign 1.2 m x 2.4 m, of wood frame and plywood construction painted with exhibit lettering produced by a professional sign painter. .3 Indicate on sign, name of Owner, Contractor, of design style as approved by Departmental Representative. .4 No other signs or advertisements, other than warning signs, are permitted on site. .5 Provide project identification site sign comprising foundation, framing, and one 1200 x 2400 mm signboard as detailed and as described below. .1 Foundations: 15 MPa concrete to CSA-A23.1 minimum 200 mm x 900 mm deep. .2 Framework and battens: SPF, pressure treated minimum 89 x 89 mm. 14-1538-002 Section 01 52 00 June 2016 CONSTRUCTION FACILITIES Drag Lake Dam Rehabilitation Page 3
.3 Signboard: 19 mm Medium Density Overlaid Douglas Fir Plywood to CSA O121. .4 Paint: alkyd enamel to CAN/CGSB-1.59 over exterior alkyd primer to CAN/CGSB 1.189. .5 Fasteners: hot-dip galvanized steel nails and carriage bolts. .6 Vinyl sign face: printed project identification, self adhesive, vinyl film overlay. .6 Direct requests for approval to erect Consultant/Contractor signboard to Departmental Representative. For consideration general appearance of Consultant/Contractor signboard must conform to project identification site sign. Wording in both official languages. .7 Signs and notices for safety and instruction in both official languages Graphic symbols to CAN/CSA-Z321. .8 Maintain approved signs and notices in good condition for duration of project, and dispose of off site on completion of project or earlier if directed by Departmental Representative.
1.13 PROTECTION AND MAINTENANCE OF TRAFFIC .1 Maintain and protect traffic on affected roads during construction period except as otherwise specifically directed by Departmental Representative. .2 Provide measures for protection and diversion of traffic, including provision of watch- persons and flag-persons, erection of barricades, placing of lights around and in front of equipment and work, and erection and maintenance of adequate warning, danger, and direction signs .3 Protect travelling public from damage to person and property. .4 Contractor's traffic on roads selected for hauling material to and from site to interfere as little as possible with public traffic. .5 Verify adequacy of existing roads and allowable load limit on these roads. Contractor: responsible for repair of damage to roads caused by construction operations. .6 Construct access and haul roads necessary. .7 Haul roads: constructed with suitable grades and widths; sharp curves, blind corners, and dangerous cross traffic shall be avoided. .8 Provide necessary lighting, signs, barricades, and distinctive markings for safe movement of traffic. .9 Dust control: adequate to ensure safe operation at all times. .10 Lighting: to assure full and clear visibility for full width of haul road and work areas during night work operations. .11 Provide snow removal during period of Work. .12 Remove, upon completion of work, haul roads designated by Departmental Representative.
1.14 CLEAN-UP .1 Remove construction debris, waste materials, packaging material from work site daily. 14-1538-002 Section 01 52 00 June 2016 CONSTRUCTION FACILITIES Drag Lake Dam Rehabilitation Page 4
.2 Clean dirt or mud tracked onto paved or surfaced roadways. .3 Store materials resulting from demolition activities that are salvageable. .4 Stack stored new or salvaged material not in construction facilities.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 TEMPORARY EROSION AND SEDIMENTATION CONTROL .1 Provide temporary erosion and sedimentation control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to requirements of authorities having jurisdiction. .2 Inspect, repair, and maintain erosion and sedimentation control measures during construction until permanent vegetation has been established. .3 Remove erosion and sedimentation controls and restore and stabilize areas disturbed during removal.
END OF SECTION 14-1538-002 Section 01 56 00 June 2016 TEMPORARY BARRIERS AND ENCLOSURES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 REFERENCES .1 Canadian General Standards Board (CGSB) .1 CGSB 1.59-97, Alkyd Exterior Gloss Enamel. .2 CAN/CGSB 1.189-00, Exterior Alkyd Primer for Wood. .2 Canadian Standards Association (CSA International) .1 CSA-O121-08(R2013), Douglas Fir Plywood. .3 Province of Ontario .1 Occupational Health and Safety Act and Regulations for Construction Projects, R.S.O. 1990 as amended .2 Air Pollution – Local Air Quality (O. Reg. 419/05) .4 Ontario Provincial Standard Specifications (OPSS) and Ontario Provincial Standard Drawings (OPSD). .5 Ontario Ministry of Transportation, Book 7 of the Ontario Traffic Manual – Temporary Conditions.
1.2 INSTALLATION AND REMOVAL .1 Provide temporary controls in order to execute Work expeditiously. .2 Remove from site all such work after use.
1.3 HOARDING .1 Provide barriers around trees and plants designated to remain. Protect from damage by equipment and construction procedures.
1.4 GUARD RAILS AND BARRICADES .1 Provide secure, rigid guard rails and barricades around deep excavations, open shafts, open stair wells, open edges of floors and roofs, and identified falling hazards. .2 Provide as required by governing authorities.
1.5 DUST TIGHT SCREENS .1 Provide dust tight screens to localize dust generating activities, and for protection of workers, finished areas of Work and public. .2 Maintain and relocate protection until such work is complete.
1.6 ACCESS TO SITE .1 Provide and maintain access roads, sidewalk crossings, ramps and construction runways as may be required for access to Work. 14-1538-002 Section 01 56 00 June 2016 TEMPORARY BARRIERS AND ENCLOSURES Drag Lake Dam Rehabilitation Page 2
1.7 PUBLIC TRAFFIC FLOW .1 Provide and maintain competent signal flag operators, traffic signals, barricades and flares, lights, or lanterns as required to perform Work and protect public.
1.8 FIRE ROUTES .1 Maintain access to property including overhead clearances for use by emergency response vehicles.
1.9 PROTECTION FOR OFF-SITE AND PUBLIC PROPERTY .1 Protect surrounding private and public property from damage during performance of Work. .2 Be responsible for damage incurred.
1.10 WASTE MANAGEMENT AND DISPOSAL .1 Separate waste materials for recycling or safe disposal.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 71 00 June 2016 EXAMINATION AND PREPARATION Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Not Used.
1.2 REFERENCES .1 Owner's identification of existing survey control points and property limits. .2 Local benchmark identified on design drawing with reference to CGVD28 (HTv2.0) datum.
1.3 QUALIFICATIONS OF SURVEYOR .1 Qualified registered land surveyor, licensed to practice in Place of Work, acceptable to Departmental Representative.
1.4 SURVEY REFERENCE POINTS .1 Locate, confirm and protect control points prior to starting site work. Preserve permanent reference points during construction. .2 Make no changes or relocations without prior written notice to Departmental Representative. .3 Report to Departmental Representative when reference point is lost or destroyed, or requires relocation because of necessary changes in grades or locations. .4 Require surveyor to replace control points in accordance with original survey control.
1.5 SURVEY REQUIREMENTS .1 Establish two permanent bench marks on site, referenced to established bench marks by survey control points. Record locations, with horizontal and vertical data in Project Record Documents. .2 Establish lines and levels, locate and lay out, by instrumentation. .3 Stake batter boards for foundations. .4 Establish foundation elevations. .5 Reference to CGVD28 (HTv2.0) datum throughout construction.
1.6 RECORDS .1 Maintain a complete, accurate log of control and survey work as it progresses. .2 On completion of foundations and major site improvements, prepare a certified survey showing dimensions, locations, angles and elevations of Work. .3 Record locations of maintained, re-routed and abandoned service lines.
1.7 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit name and address of Surveyor to Departmental Representative. 14-1538-002 Section 01 71 00 June 2016 EXAMINATION AND PREPARATION Drag Lake Dam Rehabilitation Page 2
.2 On request of Departmental Representative, submit documentation to verify accuracy of field engineering work. .3 Submit certificate signed by surveyor certifying and noting those elevations and locations of completed Work that conform and do not conform with Contract Documents.
1.8 SUBSURFACE CONDITIONS .1 Promptly notify Consultant in writing if subsurface conditions at Place of Work differ materially from those indicated in Contract Documents, or a reasonable assumption of probable conditions based thereon. .2 After prompt investigation, should Consultant determine that conditions do differ materially, instructions will be issued for changes in Work as provided in Changes and Change Orders.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 74 11 June 2016 CLEANING Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 REFERENCES .1 Not Used
1.2 PROJECT CLEANLINESS .1 Maintain Work in tidy condition, free from accumulation of waste products and debris, including that caused by Owner or other Contractors. .2 Remove waste materials from site at daily regularly scheduled times or dispose of as directed by Departmental Representative. Do not burn waste materials on site, unless approved by Departmental Representative. .3 Clear snow and ice from access to work area, bank/pile snow in designated areas only. .4 Make arrangements with and obtain permits from authorities having jurisdiction for disposal of waste and debris. .5 Provide on-site containers for collection of waste materials and debris. .6 Provide and use marked separate bins for recycling. .7 Dispose of waste materials and debris off site. .8 Store volatile waste in covered metal containers, and remove from premises at end of each working day. .9 Provide adequate ventilation during use of volatile or noxious substances. .10 Use only cleaning materials recommended by manufacturer of surface to be cleaned, and as recommended by cleaning material manufacturer. .11 Schedule cleaning operations so that resulting dust, debris and other contaminants will not fall on wet, newly painted surfaces nor contaminate building systems.
1.3 FINAL CLEANING .1 When Work is Substantially Performed remove surplus products, tools, construction machinery and equipment not required for performance of remaining Work. .2 Remove waste products and debris other than that caused by others, and leave Work clean and suitable for occupancy. .3 Prior to final review, remove surplus products, tools, construction machinery and equipment. .4 Remove waste products and debris. .5 Remove waste materials from site at regularly scheduled times or dispose of as directed by Departmental Representative. Do not burn waste materials on site. .6 Make arrangements with and obtain permits from authorities having jurisdiction for disposal of waste and debris. .7 Inspect finishes, fitments and equipment and ensure specified workmanship and operation. 14-1538-002 Section 01 74 11 June 2016 CLEANING Drag Lake Dam Rehabilitation Page 2
.8 Broom clean and wash exterior walks, steps and surfaces; rake clean other surfaces of grounds. .9 Remove dirt and other disfiguration from exterior surfaces. .10 Sweep and wash clean paved areas. .11 Remove debris and surplus materials from crawl areas and other accessible concealed spaces.
1.4 WASTE MANAGEMENT AND DISPOSAL .1 Separate waste materials for recycling.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 77 00 June 2016 CLOSEOUT PROCEDURES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Not used.
1.2 ADMINISTRATIVE REQUIREMENTS .1 Acceptance of Work Procedures: .1 Contractor's Inspection: Contractor: conduct inspection of Work, identify deficiencies and defects, and repair as required to conform to Contract Documents. .1 Notify Departmental Representative in writing of satisfactory completion of Contractor's inspection and submit verification that corrections have been made. .2 Request Departmental Representative inspection. .2 Departmental Representative's Inspection: .1 Departmental Representative and Contractor to inspect Work and identify defects and deficiencies. .2 Contractor to correct Work as directed. .3 Completion Tasks: submit written certificates that tasks have been performed as follows: .1 Work: completed and inspected for compliance with Contract Documents. .2 Defects: corrected and deficiencies completed. .3 Equipment and systems: tested and fully operational. .4 Work: complete and ready for final inspection. .4 Final Inspection: .1 When completion tasks are done, request final inspection of Work by Departmental Representative. .2 When Work incomplete according to Departmental Representative, complete outstanding items and request re-inspection. .5 Declaration of Substantial Performance: when Departmental Representative considers, dam is ready for operation, deficiencies and defects corrected and requirements of Contract substantially performed, make application for Certificate of Substantial Performance. .6 Commencement of Lien and Warranty Periods: date of Owner's acceptance of submitted declaration of Substantial Performance to be date for commencement for warranty period and commencement of lien period unless required otherwise by lien statute of Place of Work. .7 Final Payment: .1 When Departmental Representative considers final deficiencies and defects corrected and requirements of Contract met, make application for final payment. 14-1538-002 Section 01 77 00 June 2016 CLOSEOUT PROCEDURES Drag Lake Dam Rehabilitation Page 2
.8 Payment of Holdback: after issuance of Certificate of Substantial Performance of Work, submit application for payment of holdback amount in accordance with contractual agreement.
1.3 FINAL CLEANING .1 Clean in accordance with Section 01 74 11 - Cleaning. .1 Remove surplus materials, excess materials, rubbish, tools and equipment.
Part 2 Products
2.1 NOT USED .1 Not Used.
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 01 78 00 June 2016 CLOSEOUT SUBMITTALS Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Not used.
1.2 REFERENCES
1.3 ADMINISTRATIVE REQUIREMENTS .1 Pre-warranty Meeting: .1 Convene meeting one week prior to contract completion with Departmental Representative, in accordance with Section 01 31 19 - Project Meetings to: .1 Verify Project requirements. .2 Review warranty requirements. .2 Departmental Representative to establish communication procedures for: .1 Notifying construction warranty defects. .2 Determine priorities for type of defects. .3 Determine reasonable response time. .3 Contact information for bonded and licensed company for warranty work action: provide name, telephone number and address of company authorized for construction warranty work action. .4 Ensure contact is located within local service area of warranted construction, is continuously available, and is responsive to inquiries for warranty work action.
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures.
1.5 AS -BUILT DOCUMENTS AND SAMPLES .1 Maintain, at site for Departmental Representative one record copy of: .1 Contract Drawings. .2 Specifications. .3 Addenda. .4 Change Orders and other modifications to Contract. .5 Reviewed shop drawings, product data, and samples. .6 Field test records. .7 Inspection certificates. .8 Manufacturer's certificates. .2 Store record documents and samples in field office apart from documents used for construction. .1 Provide files, racks, and secure storage. 14-1538-002 Section 01 78 00 June 2016 CLOSEOUT SUBMITTALS Drag Lake Dam Rehabilitation Page 2
.3 Label record documents and file in accordance with Section number listings in List of Contents of this Project Manual. .1 Label each document "PROJECT RECORD" in neat, large, printed letters. .4 Maintain record documents in clean, dry and legible condition. .1 Do not use record documents for construction purposes. .5 Keep record documents and samples available for inspection by Departmental Representative.
1.6 RECORDING INFORMATION ON PROJECT RECORD DOCUMENTS .1 Record information on set of black line opaque drawings, and in copy of Project Manual, provided by Departmental Representative. .2 Use felt tip marking pens for recording information. .3 Record information concurrently with construction progress. .1 Do not conceal Work until required information is recorded. .4 Contract Drawings and shop drawings: mark each item to record actual construction, including: .1 Measured depths and dimensions of foundations. .2 Field changes of dimension and detail. .3 Changes made by change orders. .4 Details not on original Contract Drawings. .5 References to related shop drawings and modifications. .5 Specifications: mark each item to record actual construction, including: .1 Manufacturer, trade name, and catalogue number of each product actually installed, particularly optional items and substitute items. .2 Changes made by Addenda and change orders. .6 Other Documents: maintain manufacturer's certifications, inspection certifications, field test records, required by individual specifications sections. .7 Provide digital photos, if requested, for site records.
1.7 FINAL SURVEY .1 Submit final site survey certificate in accordance with Section 01 71 00 - Examination and Preparation, certifying that elevations and locations of completed Work are in conformance, or non-conformance with Contract Documents.
1.8 EQUIPMENT AND SYSTEMS .1 For each item of equipment and each system include description of unit or system, and component parts. .1 Give function, normal operation characteristics and limiting conditions. .2 Include performance curves, with engineering data and tests, and complete nomenclature and commercial number of replaceable parts. 14-1538-002 Section 01 78 00 June 2016 CLOSEOUT SUBMITTALS Drag Lake Dam Rehabilitation Page 3
.2 Operating Procedures: include start-up, break-in, and routine normal operating instructions and sequences. .1 Include regulation, control, stopping, shut-down, and emergency instructions. .2 Include summer, winter, and any special operating instructions. .3 Maintenance Requirements: include routine procedures and guide for trouble-shooting; disassembly, repair, and reassembly instructions; and alignment, adjusting, balancing, and checking instructions. .4 Provide servicing and lubrication schedule, and list of lubricants required. .5 Include manufacturer's printed operation and maintenance instructions. .6 Include sequence of operation by controls manufacturer. .7 Provide original manufacturer's parts list, illustrations, assembly drawings, and diagrams required for maintenance.
1.9 WARRANTIES AND BONDS .1 Develop warranty management plan to contain information relevant to Warranties. .2 Submit warranty management plan, 30 days before planned pre-warranty conference, to Departmental Representative approval. .3 Warranty management plan to include required actions and documents to assure that Departmental Representative receives warranties to which it is entitled. .4 Provide plan in narrative form and contain sufficient detail to make it suitable for use by future maintenance and repair personnel. .5 Submit, warranty information made available during construction phase, to Departmental Representative for approval prior to each monthly pay estimate. .6 Assemble approved information in binder, submit upon acceptance of work and organize binder as follows: .1 Separate each warranty or bond with index tab sheets keyed to Table of Contents listing. .2 List subcontractor, supplier, and manufacturer, with name, address, and telephone number of responsible principal. .3 Obtain warranties and bonds, executed in duplicate by subcontractors, suppliers, and manufacturers, within ten days after completion of applicable item of work. .4 Verify that documents are in proper form, contain full information, and are notarized. .5 Co-execute submittals when required. .6 Retain warranties and bonds until time specified for submittal. .7 Except for items put into use with Owner's permission, leave date of beginning of time of warranty until Certificate of Substantial Completion is issued. .8 Certificate of Substantial Completion will not be issued until both Drag Lake Sam Dam and Drag Lake North Dam are both substantially completed. .9 Conduct joint 10 month warranty inspection, measured from time of acceptance, by Departmental Representative. 14-1538-002 Section 01 78 00 June 2016 CLOSEOUT SUBMITTALS Drag Lake Dam Rehabilitation Page 4
.10 Include information contained in warranty management plan as follows: .1 Roles and responsibilities of personnel associated with warranty process, including points of contact and telephone numbers within the organizations of Contractors, subcontractors, manufacturers or suppliers involved. .2 Listing and status of delivery of Certificates of Warranty for extended warranty items. .3 Provide list for each warranted equipment, item, feature of construction or system indicating: .1 Name of item. .2 Model and serial numbers. .3 Location where installed. .4 Name and phone numbers of manufacturers or suppliers. .5 Names, addresses and telephone numbers of sources of spare parts. .6 Warranties and terms of warranty: include one-year overall warranty of construction. Indicate items that have extended warranties and show separate warranty expiration dates. .7 Cross-reference to warranty certificates as applicable. .8 Starting point and duration of warranty period. .9 Summary of maintenance procedures required to continue warranty in force. .10 Cross-Reference to specific pertinent Operation and Maintenance manuals. .11 Organization, names and phone numbers of persons to call for warranty service. .12 Typical response time and repair time expected for various warranted equipment. .4 Contractor's plans for attendance at 10 month post-construction warranty inspections. .5 Procedure and status of tagging of equipment covered by extended warranties. .6 Post copies of instructions near selected pieces of equipment where operation is critical for warranty and/or safety reasons. .11 Respond in timely manner to oral or written notification of required construction warranty repair work. .12 Written verification to follow oral instructions. .1 Failure to respond will be cause for the Departmental Representative to proceed with action against Contractor.
Part 2 Products
2.1 NOT USED .1 Not Used. 14-1538-002 Section 01 78 00 June 2016 CLOSEOUT SUBMITTALS Drag Lake Dam Rehabilitation Page 5
Part 3 Execution
3.1 NOT USED .1 Not Used.
END OF SECTION 14-1538-002 Section 02 41 19 June 2016 SELECTIVE STRUCTURE DEMOLITION Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 013543 – Environmental Procedures .2 Section 033000 – Cast-in-Place Concrete
1.2 DESCRIPTION .1 This Section specifies the methods and procedures for selective demolition of the existing structure and the removal of various items as described by the Contract drawings and the specifications. .2 The work includes but is not necessarily limited to: .1 The demolition, excavation, and disposal including any recycling of materials: .1 Partial demolition of existing vertical concrete face of the piers and bulkhead by means of saw cutting and high pressure waterblasting to a minimum depth of 200mm. .2 Partial demolition of gravity section and piers by mechanical chipping for installation of post-tensioned anchors. .3 .4 Partial demolition of gain liners for installation of new gain liners. .5 Partial demolition of penstock anchor block by means of high pressure waterblasting to a depth determined by Field Engineer. .2 Preparation of all surfaces against which new concrete is to be cast, i.e. waterblasting. .3 Disposing off site all concrete debris, removed steel members, steel reinforcement and all garbage generated during Work as described in this Section.
1.3 REFERENCES .1 CSA International .1 CSA S350-M1980(R2003), Code of Practice for Safety in Demolition of Structures. .2 Federal Legislation .1 Canadian Environmental Assessment Act (CEAA), 1992, c .37 .2 Canadian Environmental Protection Act (CEPA), 1999, c .33 .3 Transportation of Dangerous Goods Act (TDGA), 1992, c .34 .3 Ontario Occupational Health and Safety Act (OHSA) .4 U.S. Environmental Protection Agency (EPA)/Office of Water .1 EPA 832/R-92-005, Storm Water Management for Construction Activities: Developing Pollution Prevention Plans and Best Management Practices. 14-1538-002 Section 02 41 19 June 2016 SELECTIVE STRUCTURE DEMOLITION Drag Lake Dam Rehabilitation Page 2
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Submit copies of certified bills of lading from authorized disposal sites and reuse and recycling facilities for material removed from site to Departmental Representative upon request. .3 Prior to beginning of Work on site, submit detailed Waste Management Workplan and indicate: .1 Descriptions and anticipated quantities of materials to be recycled and landfilled. .2 Number and location of dumpsters. .3 Anticipated frequency of tippage. .4 Name and address of haulers and waste facilities.
1.5 SITE CONDITIONS .1 Take precautions to protect environment. .2 If material resembling spray or trowel-applied asbestos or other designated substance listed as hazardous be encountered, stop work, take preventative measures, and notify Departmental Representative immediately. .3 Proceed only after receipt of written instructions have been received from Departmental Representative.
Part 2 Products
2.1 EQUIPMENT .1 Measure shall be provided to protect site works to remain and other temporary measures installed by the Contractor for the construction. .1 Leave equipment and machinery running only while in use, except where extreme temperatures prohibit shutting down. .2 Equipment shall be sized adequately for the work so as not to induce any damage to those parts of the structure which are to remain. .3 Minimize machinery running time to only while in use. .4 Machinery used for concrete demolition must minimize air borne pollution.
Part 3 Execution
3.1 EXAMINATION .1 Inspect site with Departmental Representative and verify extent and location of items designated for removal, disposal, alternative disposal, recycling, salvage and items to remain. .2 Locate and protect utilities. Preserve active utilities traversing site in operating condition. .3 Notify and obtain approval of utility companies before starting demolition. 14-1538-002 Section 02 41 19 June 2016 SELECTIVE STRUCTURE DEMOLITION Drag Lake Dam Rehabilitation Page 3
.4 Disconnect, cap, plug or divert, as required, existing public utilities within the property where they interfere with the execution of the work, in conformity with the requirements of the authorities having jurisdiction. Mark the location of these and previously capped or plugged services on the site and indicate location (horizontal and vertical) on the record drawings. Support, shore up and maintain pipes and conduits encountered. .1 Immediately notify Departmental Representative and utility company concerned in case of damage to any utility or service, designated to remain in place. .2 Immediately notify the Departmental Representative should uncharted utility or service be encountered, and await instruction in writing regarding remedial action.
3.2 PREPARATION AND DEMOLITION .1 Temporary Erosion and Sedimentation Control: .1 Provide temporary erosion and sedimentation control measures in accordance with Section 01 35 43. .2 Protection of In-Place Conditions: .1 Prevent movement, settlement, or damage to adjacent structures, utilities, and landscaping features to remain in place. Provide bracing and shoring required. .2 Keep noise, dust, and inconvenience to occupants to minimum. .3 Protect existing systems, services and equipment. .4 Provide temporary dust screens, covers, railings, supports and other protection as required. .5 Do Work in accordance with Section 01 35 29 - Health and Safety Requirements. .3 Demolition/Removal: .1 Obtain Departmental Representative’s approval to commence demolition part of the work. .2 Remove items as indicated. .3 Materials removed are property of Contractor, unless noted otherwise by Departmental Representative. .4 Demonstrate to the Departmental Representative the methodology of demolition will not result in physical or structural damage to existing structures. .5 Saw cut to a depth of 75mm or otherwise indicated on the Contract Drawings. .6 Removal concrete to the demolition limits indicated on the Drawings by: .1 Mechanical means such as hand operated chippers (max 15kg) for pockets of post-tensioned anchors. .1 Contractor must maintain jackhammer chipping bits sharp, so as to minimize micro-cracking in the concrete layer behind the area of removal. .2 High pressure waterblasting for concrete removal on vertical faces of piers and gravity sections. .1 Do not discharge the hydro demolition water directly to the watercourse. Direct the water to a settling pond, or filter before releasing to the watercourse. See Section 01 35 43. 14-1538-002 Section 02 41 19 June 2016 SELECTIVE STRUCTURE DEMOLITION Drag Lake Dam Rehabilitation Page 4
.3 Other demolition methods to be approved by the Consultant .7 Demolish in a manner to minimize dusting. Wetting of materials is to be conducted to the extent that there is no surface runoff from the structure being demolished. Provide other temporary measures to prevent the migration of air- borne particulate. .8 Maintain structural integrity of existing structure. .9 Remove materials that cannot be salvaged for reuse or recycling and dispose of at licensed facilities. .10 Stockpile materials in a safe manner for workers and equipment until removed from the work area. Remove all stockpiled materials from the construction area at the end of each day. .11 At the end of each day’s work, leave Work in safe and stable condition. .4 Concrete Surface Preparation .1 Surface preparation of the remaining concrete shall be performed in accordance with the requirements of Section 03300 – Cast-in-Place Concrete, Clause 3.2. .5 Processing .1 Keep processing area clean and free of excess debris. .2 Supply separate, marked disposal bins for categories of waste material. .3 Separate processed materials into organized piles for stockpiling. Provide collection area for materials processed.
3.3 CLEANING .1 Progress Cleaning: clean in accordance with Section 01 74 11 - Cleaning. .1 Leave Work area clean at end of each day. .2 Final Cleaning: upon completion remove surplus materials, rubbish, tools and equipment in accordance with Section 01 74 11 - Cleaning. .1 Reinstate areas affected by Work to condition which existed prior to beginning of Work
END OF SECTION 14-1538-002 Section 03 10 00 June 2016 CONCRETE FORMING AND ACCESSORIES Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 03 20 00 – Concrete Reinforcing .2 Section 03 30 00 – Cast-in-Place Concrete
1.2 REFERENCES .1 Canadian Standards Association (CSA International) .1 CSA-A23.1-14/A23.2-14, Concrete Materials and Methods of Concrete Construction/Methods of Test and Standard Practices for Concrete. .2 CSA-O86S1-05, Supplement No. 1 to CAN/CSA-O86-01, Engineering Design in Wood. .3 CSA O121-08(R2013), Douglas Fir Plywood. .4 CSA O151-09 (R2014), Canadian Softwood Plywood. .5 CSA O153-13, Poplar Plywood. .6 CAN/CSA-O325-07(R2012), Construction Sheathing. .7 CSA O437 Series-93(R2011), Standards for OSB and Waferboard. .8 CSA S269.1-1975(R2013), Falsework for Construction Purposes. .9 CAN/CSA-S269.3-M92(R2003), Concrete Formwork, National Standard of Canada .2 Underwriters' Laboratories of Canada (ULC) .1 CAN/ULC-S701-11, Standard for Thermal Insulation, Polystyrene, Boards and Pipe Covering.
1.3 ACTION AND INFORMATIONAL SUBMITTALS .1 Submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Submit shop drawings for formwork and falsework. .1 Submit drawings stamped and signed by professional engineer registered or licensed in the Province of Ontario, Canada. .3 Submit WHMIS MSDS - Material Safety Data Sheets. .4 Indicate method and schedule of construction, shoring, stripping and re-shoring procedures, materials, arrangement of joints, special architectural exposed finishes, ties, liners, and locations of temporary embedded parts. Comply with CSA S269.1 for falsework drawings. Comply with CAN/CSA-S269.3 for formwork drawings. .5 Indicate formwork design data: such as permissible rate of concrete placement, and temperature of concrete, in forms. Where self consolidating concrete is used, show that the formwork has been designed to withstand the full hydrostatic pressure of the concrete in addition to other applicable forces. .6 Indicate sequence of erection and removal of formwork/falsework. 14-1538-002 Section 03 10 00 June 2016 CONCRETE FORMING AND ACCESSORIES Drag Lake Dam Rehabilitation Page 2
1.4 DELIVERY, STORAGE AND HANDLING .1 Store and manage hazardous materials in accordance with applicable Canadian and Ontario standards. .2 Waste Management and Disposal: .1 Separate waste materials for recycling. .2 Place materials defined as hazardous or toxic in designated containers. .3 Divert wood materials from landfill to a recycling facility as approved by Departmental Representative. .4 Divert plastic materials from landfill to a recycling facility as approved by Departmental Representative. .5 Divert unused form release material from landfill to an official hazardous material collections site as approved by the Departmental Representative.
Part 2 Products
2.1 MATERIALS .1 Formwork materials: .1 For concrete without special architectural features, use wood and wood product formwork materials to CSA-O121, CAN/CSA-O86, CSA O437 Series, and CSA- O153. .2 For concrete with special architectural features, use formwork materials to CSA- A23.1/A23.2. .2 Form ties: .1 For concrete not designated 'Architectural', use removable or snap-off metal ties, fixed or adjustable length, free of devices leaving holes larger than 25 mm diameter in concrete surface. .2 For Architectural concrete, use snap ties complete with plastic cones and light grey concrete plugs. .3 Form liner: .1 Plywood: high density overlay Douglas Fir to CSA O121, Canadian Softwood Plywood to CSA O151, Poplar to CSA O153. .4 Form release agent: non-toxic, biodegradable, low VOC. .5 Form stripping agent: colourless mineral oil, non-toxic, biodegradable, low VOC, free of kerosene, with viscosity between 15 to 24 mm2/s at 40 degrees C, flashpoint minimum 150 degrees C, open cup. .6 Falsework materials: to CSA-S269.1. .7 Sealant: as approved by Consultant. 14-1538-002 Section 03 10 00 June 2016 CONCRETE FORMING AND ACCESSORIES Drag Lake Dam Rehabilitation Page 3
Part 3 Execution
3.1 FABRICATION AND ERECTION .1 Verify lines, levels and centres before proceeding with formwork/falsework and ensure dimensions agree with drawings. .2 Fabricate and erect falsework in accordance with CSA S269.1. .3 Do not place shores and mud sills on frozen ground. .4 Provide site drainage to prevent washout of soil supporting mud sills and shores. .5 Fabricate and erect formwork in accordance with CAN/CSA-S269.3 to produce finished concrete conforming to shape, dimensions, locations and levels indicated within tolerances required by CSA-A23.1/A23.2. .6 Align form joints and make watertight. .1 Keep form joints to minimum. .7 Use 25 mm chamfer strips on external edges, unless specified otherwise. .8 Form chases, slots, openings, drips, recesses, expansion and control joints as indicated. .9 Build in anchors, sleeves, and other inserts required to accommodate Work specified in other sections. .1 Ensure that anchors and inserts will not protrude beyond surfaces designated to receive applied finishes, including painting. .10 Line forms for following surfaces: .1 Exposed faces of abutments, wingwalls, and piers: do not stagger joints of form lining material and align joints to obtain uniform pattern. .11 Clean formwork in accordance with CSA-A23.1/A23.2, before placing concrete.
3.2 REMOVAL AND RESHORING .1 Leave formwork in place for following minimum periods of time after placing concrete. .1 4 days for footings and abutments. .2 For self-consolidating concrete, refer to Section 03 30 00. .2 Remove formwork when concrete has reached 50 % of its design strength or minimum period noted above, whichever comes later, and replace immediately with adequate reshoring. .3 Re-use formwork and falsework subject to requirements of CSA-A23.1/A23.2.
END OF SECTION 14-1538-002 Section 03 20 00 June 2016 CONCRETE REINFORCING Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 031000 – Concrete Forming and Accessories .2 Section 033000 – Cast-In-Place Concrete
1.2 PRICE AND PAYMENT PROCEDURES .1 Measurement and Payment: .1 No measurement will be made under this Section. .1 Include reinforcement costs in items of concrete work in Section 03 30 00 - Cast-In-Place Concrete.
1.3 REFERENCES .1 American Concrete Institute (ACI) .1 SP-66-04, ACI Detailing Manual 2004. .2 ASTM International .1 ASTM A82/A82M-07, Standard Specification for Steel Wire, Plain, for Concrete Reinforcement. .2 ASTM A143/A143M-07, Standard Practice for Safeguarding Against Embrittlement of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embrittlement. .3 ASTM A185/A185M-07, Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete. .4 ASTM A775/A775M-07b, Standard Specification for Epoxy-Coated Reinforcing Steel Bars. .3 CSA International .1 CSA-A23.1-14/A23.2-14, Concrete Materials and Methods of Concrete Construction/Test Methods and Standard Practices for Concrete. .2 CAN/CSA-A23.3-14, Design of Concrete Structures. .3 CSA-G30.18-09 (R2014), Carbon Steel Bars for Concrete Reinforcement. .4 CSA-G40.20/G40.21-13, General Requirements for Rolled or Welded Structural Quality Steel/Structural Quality Steel. .5 CAN/CSA-G164-M92(R2003), Hot Dip Galvanizing of Irregularly Shaped Articles. .6 CSA W186-M1990(R2012), Welding of Reinforcing Bars in Reinforced Concrete Construction. .4 Reinforcing Steel Institute of Canada (RSIC) .1 RSIC-2004, Reinforcing Steel Manual of Standard Practice. 14-1538-002 Section 03 20 00 June 2016 CONCRETE REINFORCING Drag Lake Dam Rehabilitation Page 2
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Prepare reinforcement drawings in accordance with [RSIC Manual of Standard Practice] SP-66. .3 Shop Drawings: .1 Submit drawings stamped and signed by professional engineer registered or licensed in Ontario of Canada. .1 Indicate placing of reinforcement and: .1 Bar bending details. .2 Lists. .3 Quantities of reinforcement. .4 Sizes, spacings, locations of reinforcement and mechanical splices if approved by [Departmental Representative] [DCC Representative] [Consultant], with identifying code marks to permit correct placement without reference to structural drawings. .5 Indicate sizes, spacings and locations of chairs, spacers and hangers. .2 Detail lap lengths and bar development lengths to CAN/CSA-A23.3.
1.5 QUALITY ASSURANCE .1 Submit in accordance with Section 01 45 00 - Quality Control. .1 Mill Test Report: provide Departmental Representative with certified copy of mill test report of reinforcing steel, minimum 4 weeks prior to beginning reinforcing work. .2 Submit in writing to Departmental Representative proposed source of reinforcement material to be supplied.
1.6 DELIVERY, STORAGE AND HANDLING .1 Deliver, store and handle materials in accordance with manufacturer’s written instructions. .2 Delivery and Acceptance Requirements: deliver materials to site in original factory packaging, labelled with manufacturer's name and address. .3 Storage and Handling Requirements: .1 Store materials in dry location and in accordance with manufacturer's recommendations in clean, dry, well-ventilated area. .2 Replace defective or damaged materials with new. .4 Develop Construction Waste Management Plan related to Work of this Section. 14-1538-002 Section 03 20 00 June 2016 CONCRETE REINFORCING Drag Lake Dam Rehabilitation Page 3
Part 2 Products
2.1 MATERIALS .1 Substitute different size bars only if permitted in writing by Consultant. .2 Reinforcing steel: billet steel, grade 400, deformed bars to CSA-G30.18, unless indicated otherwise. .3 Cold-drawn annealed steel wire ties: to ASTM A82/A82M. .4 Epoxy Coating of non-prestressed reinforcement: to ASTM A775/A775M. (if applicable) .5 Chairs, bolsters, bar supports, spacers: to CSA-A23.1/A23.2. .6 Mechanical splices: subject to approval of Consultant.
2.2 FABRICATION .1 Fabricate reinforcing steel in accordance with CSA-A23.1/A23.2, and Reinforcing Steel Manual of Standard Practice by the Reinforcing Steel Institute of Canada. .2 Obtain Consultant's written approval for locations of reinforcement splices other than those shown on placing drawings. .3 Upon approval of Consultant, weld reinforcement in accordance with CSA W186. .4 Ship bundles of bar reinforcement, clearly identified in accordance with bar bending details and lists.
2.3 SOURCE QUALITY CONTROL .1 Provide Consultant with certified copy of mill test report of reinforcing steel, showing physical and chemical analysis, minimum 4 weeks prior to beginning reinforcing work. .2 Submit to Consultant for review proposed source of material to be supplied.
Part 3 Execution
3.1 FIELD BENDING .1 Do not field bend or field weld reinforcement except where indicated or authorized by Consultant. .2 When field bending is authorized, bend without heat, applying slow and steady pressure. .3 Replace bars, which develop cracks or splits.
3.2 PLACING REINFORCEMENT .1 Place reinforcing steel as indicated on placing drawings in accordance with CSA- A23.1/A23.2. .2 Prior to placing concrete, obtain Consultant's approval of reinforcing material and placement. .3 Ensure cover to reinforcement is maintained during concrete pour. 14-1538-002 Section 03 20 00 June 2016 CONCRETE REINFORCING Drag Lake Dam Rehabilitation Page 4
3.3 CLEANING .1 Progress Cleaning: clean in accordance with Section 01 74 11 - Cleaning. .1 Leave Work area clean at end of each day. .2 Final Cleaning: upon completion remove surplus materials, rubbish, tools and equipment in accordance with Section 01 74 11 - Cleaning.
END OF SECTION 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 013543 – Environmental Procedures .2 Section 024119 – Selective Structure Demolition .3 Section 031000 – Concrete Forming and Accessories .4 Section 032000 – Concrete Reinforcing .5 Section 033726 – Underwater Placed Concrete .6 Section 051223 – Structural Steel
1.2 PRICE AND PAYMENT PROCEDURES .1 Measurement and Payment: .1 Measurement Procedures: in accordance with Section 01 22 01 – Measurement and Payment. .2 The unit of measurement will be lump sum.
1.3 REFERENCES .1 Abbreviations and Acronyms: .1 Portland Cement: hydraulic cement, blended hydraulic cement (XXb - b denotes blended) and Portland-limestone cement. .1 Type GU, GUb and GUL - General use cement. .2 Fly ash: .1 Type F - with CaO content less than 15%. .3 GGBFS - Ground, granulated blast-furnace slag. .4 SCC – Self consolidating concrete. .2 Reference Standards: .1 ASTM International .1 ASTM C260/C260M-10a, Standard Specification for Air-Entraining Admixtures for Concrete. .2 ASTM C309-11, Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete. .3 ASTM C494/C494M-15a, Standard Specification for Chemical Admixtures for Concrete. .4 ASTM C1017/C1017M-13e1, Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete. .5 ASTM C1610/C1610M-14, Standard Test Method for Static Segregation of Self Consolidating Concrete by Column Technique. .6 ASTM C1621/C1621M-14, Standard Test for Passing Ability of Self- Consolidating Concrete by J-Ring. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 2
.2 CSA International .1 CSA A23.1/A23.2-14, Concrete Materials and Methods of Concrete Construction/Methods of Test and Standard Practices for Concrete. .2 CSA A283-06(R2011), Qualification Code for Concrete Testing Laboratories. .3 CSA A3000-13, Cementitious Materials Compendium (Consists of A3001, A3002, A3003, A3004 and A3005).
1.4 ADMINISTRATIVE REQUIREMENTS .1 Pre-installation Meetings: convene pre-installation meeting one week prior to beginning concrete works. .1 Ensure site supervisor, Departmental Representative, and Consultant attend. .1 Verify project requirements. .2 Review construction sequence and schedule.
1.5 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Provide testing results for review by Consultant and do not proceed without written approval when deviations from mix design or parameters are found. .3 Concrete pours: provide accurate records of poured concrete items indicating date and location of pour, quality, air temperature and test samples taken as described in PART 3 - FIELD QUALITY CONTROL. .4 Concrete hauling time: provide for review by Consultant deviations exceeding maximum allowable time of 120 minutes for concrete to be delivered to site of Work and discharged after batching. .5 Provide two copies of WHMIS MSDS in accordance with Section 01 35 29.06 - Health and Safety Requirements, and 01 35 43 - Environmental Procedures. .6 The Contractor shall submit the following supporting documentation for Self Consolidating Concrete: .1 Trial batch test data, including the following: .1 Plastic concrete test results: .1 Concrete temperature .2 Air content including target value for air content .3 Slump flow including target value for slump flow .4 Visual stability index .5 J-ring flow .6 Column segregation
.2 Hardened concrete test results: .1 28-Day compressive strength .2 Air void system .3 Rapid chloride permeability 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 3
.4 Linear shrinkage .5 Visual evaluation of segregation .3 The trial batch test data shall not be more than 12 months old at the time it is submitted.
.2 A certificate from the manufacturer of the viscosity modifying admixture (if used), verifying that no chlorides were added to the viscosity modifying admixture during its manufacture and that it meets the requirements for Type S admixture when tested according to ASTM C 494. The admixture and its dosage shall be identified.
1.6 QUALITY ASSURANCE .1 Quality Assurance: in accordance with Section 01 45 00 - Quality Control. .2 Provide Consultant, minimum 4 weeks prior to starting concrete work, with valid and recognized certificate from plant delivering concrete. .1 Provide test data and certification by qualified independent inspection and testing laboratory that materials and mix designs used in concrete mixture will meet specified requirements. .3 Minimum 4 weeks prior to starting concrete work, provide proposed quality control procedures for review by Consultant on following items: .1 Falsework erection. .2 Hot weather concrete. .3 Cold weather concrete. .4 Curing. .5 Finishes. .6 Formwork removal. .7 Joints. .8 Dowel installation and testing. .4 Quality Control Plan: provide written report to Departmental Representative and Consultant verifying compliance that concrete in place meets performance requirements of concrete as established in PART 2 - PRODUCTS. .5 Records: .1 Before unloading at Site, have concrete producer submit to the Departmental Representative a delivery ticket (with each batch of concrete) on which is printed, stamped or written the following information: .1 Name and location of batching plant. .2 Date and serial number of ticket. .3 Name of Contractor. .4 Specific designation of job (name and location). .5 Approved mix code, specified strength, and specific class or designation of concrete indicated in Concrete Mixes article specified. .6 Amount of concrete in cubic meters. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 4
.7 Truck number, cumulative total, and/or load number. .8 Time loaded or time of first mixing of cement and water/aggregate. .9 If water added on site, show amount and have this information initialed by the Departmental Representative. .10 Include the following information, which is to be registered by producer's representative on at least two copies of the delivery ticket, after discharge has been completed: .1 Time that load arrived on Site. .2 Time that discharge of load was started. .3 Time that discharge of load was completed. .4 Type and amount of admixtures, if added on Site. .5 Amount of water, if added on Site. .6 Location of placed concrete and any issues encountered. .7 Volume of concrete returned. .11 Maintain accurate records of cast-in-place concrete elements. Include in records the following information: .1 Date of placing concrete element. .2 Location of concrete element. .3 Specified strength of concrete. .4 Air and form temperature when concrete was placed. .5 Temperature of concrete when placed in the form. .6 Test samples taken and results of test samples.
1.7 DELIVERY, STORAGE AND HANDLING .1 Delivery and Acceptance Requirements: .1 Concrete hauling time: deliver to site of Work and discharged within 120 minutes maximum after batching. .1 Do not modify maximum time limit without receipt of prior written agreement from Consultant and concrete producer as described in CSA A23.1/A23.2. .2 Deviations to be submitted for review by Consultant. .2 Concrete delivery: ensure continuous concrete delivery from plant meets CSA A23.1/A23.2. .3 Prevent admixture and additive materials from entering drinking water supplies or streams. Using appropriate safety precautions, collect liquid or solidify with insert, non-combustible material and remove for disposal. Dispose of waste in accordance with applicable local, Provincial and National regulations. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 5
Part 2 Products
2.1 DESIGN CRITERIA .1 Performance : to CSA A23.1/A23.2, and as described in MIXES of PART 2 - PRODUCTS.
2.2 PERFORMANCE CRITERIA .1 Quality Control Plan: ensure concrete supplier meets performance criteria of concrete as established by Consultant and provide verification of compliance as described in PART 1 - QUALITY ASSURANCE.
2.3 MATERIALS .1 Portland Cement: to CSA A3001, Type GU. .1 Reduction in cement from Base Mix to Actual Supplementary Cementing Materials (SCMs) Mix, as percentage. .2 Blended hydraulic cement: Type GUb to CSA A3001. .3 Supplementary cementing materials: with minimum 20% Type F fly ash replacement, by mass of total cementitious materials to CSA A3001. .4 Water: to CSA A23.1. .5 Aggregates: to CSA A23.1/A23.2. .1 Hard, dense, well graded aggregates of normal mass-density. .2 Aggregates to be free from materials identified as having deleterious reactions with certain constituents of cements. Minimal amounts of these reactive materials will be given consideration for inclusion - the basis of consideration will be: .1 Conformance to the requirement of CAN/CSA-A23.1/A23.2; and/or .2 The performance criteria as given in Clause 5.9 of CAN/CSA- A23.1/A23.2. .6 Admixtures: .1 Air entraining admixture: to ASTM C260. .2 Chemical admixture: to ASTM C494, ASTM C1017. Consultant to approve accelerating or set retarding admixtures during cold and hot weather placing. .3 Superplasticizer shall be used in SCC, added at the point of job site. .4 A viscosity modifying admixture (VMA) may be used in SCC. .7 Shrinkage compensating grout: premixed compound consisting of non-metallic aggregate, Portland cement, water reducing and plasticizing agents to CSA A23.1/A23.2. .1 Compressive strength: 35 MPa at 28 days. .2 Net shrinkage at 28 days: maximum 2%. .8 Curing compound: to CSA A23.1/A23.2, white or with fugitive dye. .9 Hydrophilic waterstop 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 6
.1 Rectangular profile measuring 7mm thick x 25mm wide and incorporating hollow longitudinal compression openings. .2 Comprised of non-bentonite synthetic chloroprene rubber. .3 Co-extruded hydrophilic and non-hydrophilic composition. .4 Hardness exceeding 50 (ASTM-D2240). .5 Tensile strength exceeding 30kg/m2. .6 Elongation of synthetic chloroprene rubber exceeding 600% (ASTM D412). .7 Elongation of chloroprene rubber only exceeding 400% (ASTM D412). .8 Volume expansion capability exceeding 3 times original size. .9 Adhesive and sealant as recommended by waterstop manufacturer. .10 Premoulded joint fillers: .1 Bituminous impregnated fiber board: to ASTM D1751. .11 Embedded steel items .1 For embedded steel plates and sections, refer to Section 051223 – Structural Steel.
2.4 MIXES .1 Performance Method for specifying concrete: to meet Consultant performance criteria to CSA A23.1/A23.2. .1 Ensure concrete supplier meets performance criteria as established below and provide verification of compliance as in Quality Control Plan. .2 Concrete shall be self-consolidating concrete (SCC) as defined in CSA A-23.1, Clause 8.6. and shall meet the requirements of CSA A 23.1. .3 Concrete mixes shall be designed in accordance with CSA A23.1 so that concrete will be homogeneous, uniformly workable, readily placeable into corners and angles of forms and around reinforcement by methods of placing and consolidation employed on the Work but without permitting materials to segregate or excessive free water to collect on the surface. The concrete, when hardened shall have the qualities specified as proved by previous mix experience documented by an independent testing agency satisfactory to the Consultant.
.4 The equivalent sodium oxide (Na2O) content of the concrete mix shall not exceed 3.0 kg in any cubic metre of concrete where Equivalent Na2O = Equivalent Na2O (cement, flyash, slag, admixtures and water) + 0.76 Chloride (Cl) ions (aggregates). .5 The use of calcium chloride is not permitted. .6 Provide concrete mix to meet following plastic state requirements: .1 Uniformity: no segregation. .2 Workability: free of surface blemishes, loss of mortar, colour variations, and segregation, and in accordance with CSA A23.1 Table 24. .3 Finishability: to satisfaction of the Consultant. .4 Set time: to condition of pour and to acceptance of the Consultant. .7 Provide concrete mix to meet following hard state requirements: 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 7
.1 Durability and class of exposure: F-1 and F-2. .2 Compressive strength at 28 days: 30 MPa minimum. .3 Intended application: water retaining structure and foundation. .4 Aggregate size 20 mm maximum. .5 Air content: 5-8% .6 Maximum water cement ratio: 0.4 .8 For tremie concrete, refer to Section 03 37 26. .9 Provide quality management plan to ensure verification of concrete quality to specified performance. .10 Concrete supplier's certification: both batch plant and materials meet CSA A23.1 requirements.
Part 3 Execution
3.1 PREPARATION .1 Obtain Consultant's written approval before placing concrete. .1 Provide 24 hours minimum notice prior to placing of concrete. .2 Place concrete reinforcing in accordance with Section 03 20 00 - Concrete Reinforcing. .3 During concreting operations: .1 Development of cold joints not allowed. .2 Ensure concrete delivery and handling facilitates placing with minimum of re- handling, and without damage to existing structure or Work. .4 Pumping of concrete is permitted only after approval of equipment and mix. .5 Ensure reinforcement and inserts are not disturbed during concrete placement. .6 No vibrators shall be used to consolidate SCC. .7 For placement of SCC, the maximum horizontal distance between the discharge point of the SCC and its final position shall be 10m. .8 Prior to placing of concrete obtain Consultant's approval of proposed method for protection of concrete during placing and curing in adverse weather. .9 Protect previous Work from staining. .10 Clean and remove stains prior to application for concrete finishes. .11 Maintain accurate records of poured concrete items to indicate date, location of pour, quality, air temperature and test samples taken. .12 In locations where new concrete is dowelled to existing work, drill holes in existing concrete. .1 Place steel dowels of deformed steel reinforcing bars and pack solidly with epoxy grout to anchor and hold dowels in positions as indicated. .13 Do not place load upon new concrete until authorized by Consultant. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 8
3.2 SURFACE PREPARATION .1 Remove all loose or defective concrete, fractured concrete and other foreign materials from surfaces of previously hardened concrete that has been recently poured, from surfaces of old concrete against which new concrete is to be cast, and from the surface of the concrete remaining after deteriorated concrete has been removed by mechanical means, waterblasting or other methods acceptable to the Consultant. .2 Expose but do not undercut coarse aggregate on surface against which new concrete is to be cast. .3 Five categories of surface preparation are specified below, depending upon the type of surface being prepared. .1 For surface preparation of unformed surfaces of recently placed concrete in lieu of mechanical means, it is acceptable to “green cut” the surface of the previously placed concrete to remove all surface mortar and laitance. To avoid premature green cutting, a suitable retarding agent shall be placed on the fresh concrete surface on completion of placement and green cutting shall be performed after the concrete below the surface has had time to harden. The surface may become dull with lime coating or become contaminated during subsequent reinforcing steel or formwork installation. Should this occur, the surface shall be cleaned prior to concreting using waterblasting at a pressure suitable to remove the coating. .2 Surface preparation of formed faces of recently placed concrete shall be by high pressure waterblasting to remove the outer layer of mortar and expose, but not undercut, the coarse aggregate. The minimum water pressure for waterblasting in this category shall be 70 MPa and the minimum water flow shall be 38 litres per minute. Waterblasting equipment to be used in this category must be capable of waterblasting to a maximum pressure of 138MPa and a flow of 38 litres per minute. .3 For surface preparation of the concrete remaining after all the deteriorated concrete has been removed by mechanical means and against which new concrete is to be poured, or if all the deteriorated concrete is to be removed by high water pressure waterblasting, the surface of the concrete shall be waterblasted to remove all loose, fractured or otherwise defective concrete, contaminated or other foreign material that maybe on the surface of the concrete against which the new concrete is to be cast. The minimum water pressure for waterblasting in this category shall be 70MPa and the minimum water flow shall be 38 litres per minute. Waterblasting equipment to be used in this category must be capable of waterblasting to a maximum pressure of 138MPa and a flow of 38 litres per minute. .4 For surface preparation of old concrete where little of no deterioration is present and against which new concrete is to be cast, the surface of the old concrete shall be waterblasted to remove the outer layer of mortar, to expose the coarse aggregate and to remove any loose or defective concrete, foreign material or contamination that may prevent a good bond from forming between the old and new concrete. The minimum water pressure for waterblasting in this category shall be 70MPa and the minimum water flow shall be 38 litres per minute. At existing construction joints or cracks that are not matched by construction joints in the new concrete, the concrete shall be removed until the remaining concrete at 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 9
the joint or crack is tight and not deteriorated. Where the joint or crack remains open, it shall be cut back, sealed with mortar and bridged with geotextile as directed by the Engineer. Extent of removal shall be to the satisfaction of the Consultant. .5 For surface preparation of rock against which new concrete is to be cast, the surface of rock shall be cleaned of all foreign material by waterblasting. Dental concrete shall be placed in open joints and fissures prior to the new concrete being case, to seal all open joints and fissures to prevent leakage of mortar from the plastic concrete into these joints or fissures. Dental concrete shall have the same mix proportions as the new concrete that is to be cast against the rock surface.
3.3 INSTALLATION/APPLICATION .1 Do cast-in-place concrete work to CSA A23.1/A23.2. .2 Bonding fresh concrete to hardened/existing concrete .1 All new concrete shall be well bonded to surface of the concrete or rock against which it is cast. To achieve this good bond, the surface of the old concrete, recently poured concrete or rock is to be prepared to the requirements given in Section 3.2 above in addition to the following requirements. .2 Continuous water saturation of the existing concrete surface shall be carried out for a minimum of 12 hours before casting the new concrete, unless otherwise permitted by the Consultant. If necessary, in cold weather conditions, provide heating to prevent freezing of the saturation water. .3 Bonding agents shall not be used to bond the fresh concrete to hardened concrete. .4 Immediately prior to casting the new concrete, remove all standing water from the surface against which the new concrete is to be cast and from the pockets in the uneven surface, if these are present, to ensure that no free water is present to dilute and weaken the cement paste of the new plastic concrete at the construction joint. Concrete condition shall be saturated-surface dry. .5 Ensure no groundwater, precipitation or water from any other sources enters the area being concreted until final set of the concrete has taken place. .6 Immediately prior to casting the new concrete, removal all loose debris, foreign material and contamination of the surface against which the new concrete is to be cast, to ensure a good bond between the new concrete and the surface against which it is being cast. Ports shall be installed in forms as necessary to ensure this can be achieved. .7 Use an industrial vacuum cleaner if necessary to achieve a satisfactory surface condition and complete cleanup. .3 Concrete placement .1 Placement of concrete shall be in accordance with CAN/CSA-A23.1. The temperature of plastic concrete, as placed, shall not exceed 27°C. During cold weather, the temperature of concrete, as placed, shall not be less than 10°C. Concrete shall be maintained at a temperature of not less than 10°C for 72 hours after placing. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 10
.2 The maximum time limit of 120 min. from initial mixing to complete discharge shall be observed. Water shall be added on job site only if instructed by concrete supplier and as per clause 5.2.4.3.2 of CAN/CSA-A23.1-09. Topping up with superplasticisers on job site shall be done as per clause 5.2.4.3.3 of CAN/CSA- A23.1. .3 For tremie concrete, refer to Section 03 37 26. .4 Anchor bolts: .1 Set anchor bolts to templates in co-ordination with appropriate trade prior to placing concrete. .2 Grout anchor bolts in preformed holes or holes drilled after concrete has set only after receipt of written approval from Consultant. .1 Drilled holes: to manufacturers' recommendations. .3 Protect anchor bolt holes from water accumulations, snow and ice build-ups. .4 Set bolts and fill holes with epoxy grout. .5 Grout under base plates using procedures in accordance with manufacturer's recommendations which result in 100 % contact over grouted area. .6 Finishing and curing: .1 Finish concrete to CSA A23.1/A23.2. .2 Use procedures as reviewed by Consultant to remove excess bleed water. Ensure surface is not damaged. .3 Use curing compounds compatible with applied finish on concrete surfaces. Provide written declaration that compounds used are compatible. .4 Finish concrete floor to CSA A23.1/A23.2. Class A. .5 SCC shall be moist cured for a minimum period of 7 days, unless otherwise specified by concrete supplier. .6 All exposed surfaces shall have a smooth, dense finish free from cracks, pits, honeycombing, etc. .7 Unless otherwise specified or permitted by the Consultant, tie holes, honeycombs, and other concrete surface defects shall be repaired in accordance with CAN/CSA-A23.1 Clause 7.7.3, as soon as practical after form removal while concrete is still green. Patches exposed to view shall blend with surrounding surfaces. .8 Curing is extreme temperatures shall be in accordance with CSA A23.1, Section 7.4.1.8 and to the satisfaction of the Consultant. .7 Toppings: .1 Topping mixture to be pre-blended, synthetic fibre reinforced, high performance cementitious concrete mix as specified on design drawing. .2 Comply with manufacturer’s recommendations for surface preparation and mixing requirements. .3 Place to CSA A23.1/A23.2 and topping manufacturer's recommendations. .4 Finish concrete surface shall be a smooth surface with no exposed fibers. .8 Waterstops: 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 11
.1 Install waterstops to provide continuous water seal. .2 Do not distort or pierce waterstop in way as to hamper performance. .3 Install waterstop in accordance with manufacturer’s recommendations .9 Embedded parts .1 Set embedded parts as indicated on design drawings. .2 Embedded parts must be rigidly secured against displacement during concreting. Any displacement whether caused by movement of forms or movement of embedded parts relative to the forms, shall be corrected to their specified location. .3 Re-check locations and sizes of embedded parts prior to concrete pouring.
3.4 SURFACE TOLERANCE .1 Concrete tolerance to CSA A23.1.
3.5 FIELD QUALITY CONTROL .1 Site tests: conduct tests as follows and in accordance with Section 01 45 00 - Quality Control and submit report as described in PART 1 - ACTION AND INFORMATIONAL SUBMITTALS. .1 Concrete pours. .2 Slump. .3 Air content. .4 Compressive strength at 7, 28 and 56 days. .5 Air and concrete temperature. .2 Slump and temperature shall be measured at point of discharge for every truck prior to addition of superplasticizer. Slump shall also be tested at point of placement. .3 Air content shall be tested at point of discharge after addition of superplacticizer. Cylinder specimens for air void analysis shall be cast and tested as required by the Consultant. Random tests for air content following addition of superplasticizer shall be performed at point of placement or point of discharge as required by the Consultant. .4 Compressive strength testing specimens shall be prepared on each day that concrete is placed at 7, 28 and 56 days. Separate testing shall be performed for each pier. Four standard cylinders shall be cast for laboratory curing and testing. One specimen shall be tested at 7 days, two shall be tested at 28 days. One cylinder shall be retained for 56 days for testing as considered necessary by the consultant. .5 Additional specimens shall be prepared and cured on site for estimating in-place concrete strength for form removal purposes. .6 Inspection and testing of concrete and concrete materials will be carried out by testing laboratory designated by Departmental Representative for review to CSA A23.1/A23.2. .1 Ensure testing laboratory is certified to CSA A283. .7 Ensure test results are distributed for discussion at pre-pouring concrete meeting between testing laboratory, Departmental Representative, and Consultant. .8 Departmental Representative will pay for costs of tests. 14-1538-002 Section 03 30 00 June 2016 CAST-IN-PLACE CONCRETE Drag Lake Dam Rehabilitation Page 12
.9 Departmental Representative will take additional test cylinders during cold weather concreting. Cure cylinders on job site under same conditions as concrete which they represent. .10 Non-Destructive Methods for Testing Concrete: to CSA A23.1/A23.2. .11 Inspection or testing by Consultant will not augment or replace Contractor quality control nor relieve Contractor of his contractual responsibility. .12 Verify dimension, location, and elevation of all works with respect to the design drawing and with reference to the same datum system used on design drawing.
3.6 CLEANING .1 Clean in accordance with Section 01 74 11 - Cleaning. .2 Waste Management: separate waste materials for recycling. .1 Provide appropriate area on job site where concrete trucks and be safely washed. .2 Do not dispose of unused admixtures and additive materials into sewer systems, into lakes, streams, onto ground or in other location where it will pose health or environmental hazard. .3 Prevent admixtures and additive materials from entering drinking water supplies or streams. .4 Using appropriate safety precautions, collect liquid or solidify liquid with inert, noncombustible material and remove for disposal. .5 Dispose of waste in accordance with applicable local, Provincial/Territorial and National regulations.
END OF SECTION 14-1538-002 Section 03 37 26 June 2016 UNDERWATER PLACED CONCRETE Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 013543 – Environmental Procedures .2 Section 033000 – Cast in-place concrete.
1.2 REFERENCES .1 Definitions: .1 Tremie concrete: concrete placed underwater through tube called tremie pipe. .2 Tremie pipe: pipe has hopper at upper end and may be open ended or may have foot valve, plug or travelling plug to control flow of concrete.. .1 Concrete is placed in hopper and sufficient head of concrete is maintained in tremie pipe to provide desired rate of flow. .3 Pumped concrete method: method of placing concrete underwater uses concrete pump with discharge line used in similar manner to tremie pipe. .2 Reference Standards: .1 CSA International .1 CSA A23.1/A23.2-14, Concrete Materials and Methods of Concrete Construction/Test Methods and Standard Practices for Concrete.
1.3 ADMINISTRATIVE REQUIREMENTS .1 Concrete pre-placement meeting; conduct pre-placement meeting 2 weeks minimum before tremie operation. .1 Ensure meeting includes as minimum attendees as follows: .1 General contractor. .2 Ready-mix concrete supplier. .3 Admixture supplier. .4 Placing/formwork sub-contractor. .5 Reinforcing sub-contractor. .6 Testing agency representative. .7 Departmental Representative. .8 Structural engineer (Consultant). .2 Distribute minutes to attendees including copies of concrete mix designs, aggregate physical properties, placing schedule, rate of delivery, testing program, and, contingency plan for delay and breakdown.
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Product Data: 14-1538-002 Section 03 37 26 June 2016 UNDERWATER PLACED CONCRETE Drag Lake Dam Rehabilitation Page 2
.1 Submit manufacturer's instructions, printed product literature and data sheets for concrete and include product characteristics, performance criteria, physical size, finish and limitations.
1.5 DELIVERY, STORAGE AND HANDLING .1 Deliver, store and handle materials in accordance with manufacturer's written instructions. .2 Delivery and Acceptance Requirements: deliver materials to site in original factory packaging, labelled with manufacturer's name and address. .3 Storage and Handling Requirements: .1 Store materials in dry location and in accordance with manufacturer's recommendations in clean, dry, well-ventilated area. .2 Store and protect concrete from nicks, scratches, and blemishes. .3 Replace defective or damaged materials with new.
Part 2 Products
2.1 MATERIALS .1 Concrete materials: to Section 03 30 00 - Cast-in-Place Concrete.
2.2 CONCRETE MIXES .1 Refer to Section 033000 for performance method for specifying concrete, except if otherwise specified. .2 Use type GU cement. .3 Minimum compressive strength at 28 days: 30MPa. .4 Class of exposure: F-1. .5 Maximum water cement ratio by mass: as per CSA A23.1 Table 2. .6 Nominal size of coarse aggregate: 20 mm.. .7 Slump: 150mm ± 20mm, prior to addition of superplasticizer. Maximum slump for concrete to which superplasticizer has been added is 180mm. .8 Air content: as per CSA A23.1 Table 4. .9 Admixtures: as approved in writing by Consultant. Anti-washout admixtures and/or superplasticizers and/or other admixtures must be used to make underwater pouring possible without any piping clogging and to decrease the percentage of concrete fines released to the water column. .1 Consultant may withdraw prior approval of admixture if conditions encountered during course of work indicate unsatisfactory results. .2 Do not use calcium chloride or materials containing calcium chloride. .3 Submit admixtures to produce self consolidating concrete to Consultant for review. 14-1538-002 Section 03 37 26 June 2016 UNDERWATER PLACED CONCRETE Drag Lake Dam Rehabilitation Page 3
Part 3 Execution
3.1 EXAMINATION .1 Verification of Conditions: verify that conditions of substrate previously installed under other Sections or Contracts are acceptable for concrete placement installation in accordance with manufacturer's written instructions. .1 Visually inspect substrate in presence of Consultant. .2 Inform Consultant of unacceptable conditions immediately upon discovery. .3 Proceed with installation only after unacceptable conditions have been remedied and after receipt of written approval to proceed from Consultant.
3.2 PREPARATION .1 Where concrete must bond to existing surfaces, clean surfaces before starting concrete placement. .1 Use water jets, mechanical scrapers or other means, and when quantities of mud or rock cuttings are present, remove by air lift.
3.3 INSTALLATION .1 Do concrete work in accordance with Section 03 30 00 - Cast-in-Place Concrete and Section 03 20 00 - Concrete Reinforcing and to CSA A23.1/A23.2. Testing for concrete to CSA A23.1/A23.2. .2 Where concrete placement extends above water surface, protect concrete from direct contact with air at temperature below 5 degrees C in accordance with CAN/CSA A23.1. .3 Place concrete in one continuous operation to full depth required. .1 Supply complete equipment for every phase of operation. .2 Provide sufficient supply of concrete to complete pour without interruption. .4 Tremie method: .1 Provide water-tight tremie pipe sized to allow free flow of concrete. .2 Provide hopper at top of tremie pipe and means to raise and lower tremie pipe. .3 Provide plug or foot valve at bottom of tremie pipe to permit filling pipe with concrete initially. .4 Start placement with tremie pipe full of concrete. Keep bottom of pipe buried in freshly placed concrete to depth as required. .5 If seal is lost, allowing water to enter pipe, withdraw pipe immediately. Refill pipe, and continue placing as specified. .6 If tremie operation is interrupted so that horizontal construction joint has to be made, cut surface laitance by jetting, and remove loose material by pumping or air lifting before placing next lift. .7 Do not vibrate, disturb or puddle concrete after placement.
3.4 CLEANING .1 Progress Cleaning: clean in accordance with Section 01 74 11 - Cleaning. 14-1538-002 Section 03 37 26 June 2016 UNDERWATER PLACED CONCRETE Drag Lake Dam Rehabilitation Page 4
.1 Leave Work area clean at end of each day. .2 Final Cleaning: upon completion remove surplus materials, rubbish, tools and equipment in accordance with Section 01 74 11 - Cleaning.
END OF SECTION 14-1538-002 Section 05 12 23 June 2016 STRUCTURAL STEEL Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 05 51 29 – Metal Stairs
1.2 REFERENCES .1 ASTM International Inc. .1 ASTM A36/A36M-14, Standard Specification for Carbon Structural Steel. .2 ASTM A123/A123M-15, Standard Specification for Zinc (hot-Dip Galvanized) Coatings on Iron and Steel Products. .3 ASTM A193/A193M-15a, Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature or High-Pressure Service and Other Special Purpose Applications. .4 ASTM A32514, Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. .5 ASTM A490M-14a, Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength. .2 Canadian General Standards Board (CGSB) .1 CAN/CGSB-85.10-99, Protective Coatings for Metals. .3 Canadian Standards Association (CSA International) .1 CSA G40.20/G40.2113, General Requirements for Rolled or Welded Structural Quality Steel/Structural Quality Steel. .2 CAN/CSA-S16-14, Limit States Design of Steel Structures. .3 CAN/CSA-S136-12, North American Specifications for the Design of Cold Formed Steel Structural Members. .4 CSA W47.1-09(R2014), Certification of Companies for Fusion Welding of Steel. .5 CSA W48-14, Filler Metals and Allied Materials for Metal Arc Welding. .6 CSA W55.3-08(R2013), Resistance Welding Qualification Code for Fabricators of Structural Members Used in Buildings. .7 CSA W59-13, Welded Steel Construction (Metal Arc Welding). .4 The Society for Protective Coatings (SSPC) and National Association of Corrosion Engineers (NACE) International
1.3 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Shop Drawings: .1 Provide drawings stamped and signed by professional engineer registered or licensed in Province of Ontario, Canada. 14-1538-002 Section 05 12 23 June 2016 STRUCTURAL STEEL Drag Lake Dam Rehabilitation Page 2
.2 The Consultant's review of shop drawings will not relieve the Contractor from their responsibility for ensuring that the work is complete, accurate, and in accordance with applicable codes, Drawings and Specifications. .3 Erection drawings: .1 Submit erection drawings indicating details and information necessary for assembly and erection purposes including: .1 Description of methods. .2 Sequence of erection. .3 Type of equipment used in erection. .4 Temporary bracings. .4 Fabrication drawings: .1 Submit fabrication drawings showing designed assemblies, components and connections are stamped and signed by qualified professional engineer licensed in the Province of Ontario, Canada. .5 Welding Procedures and Certificates .1 Submit all prequalified welding procedures that will be used on the project. Such procedures to be prepared and sealed by a CSA registered Welding Engineer. .2 Non-destructive Examination (NDE) certifications and procedures shall be submitted to the Consultant upon request. .3 Submit certificate verifying certification by the Canadian Welding Bureau to the requirements of CSA W47.1 and copies of welding qualification certificates and identification cards for welders or welding operators. .4 Manufacturer’s certification stating conformity of the welding filler materials to this specification. .6 Source Quality Control Submittals: .1 Submit 1 copy of mill test reports 4 weeks prior to fabrication of structural steel. .1 Mill test reports to show chemical and physical properties and other details of steel to be incorporated in project. .2 Provide mill test reports certified by metallurgists qualified to practice in Province of Ontario, Canada. .7 Fabricator Reports: .1 Provide structural steel fabricator's affidavit stating that materials and products used in fabrication conform to applicable material and products standards specified and indicated. .8 Schedule
.1 The Contractor shall prepare and submit schedules for detailing, shop drawing submittal, fabricating, delivering, and erecting the steel work.
1.4 DELIVERY, STORAGE AND HANDLING .1 Deliver, store and handle materials in accordance with manufacturer’s written recommendations. 14-1538-002 Section 05 12 23 June 2016 STRUCTURAL STEEL Drag Lake Dam Rehabilitation Page 3
.2 Deliver materials in manufacturer's original, undamaged containers with identification labels intact. .3 Storage and Handling Requirements: .1 Store materials in accordance with manufacturer's recommendations in clean, dry, well-ventilated area. .2 Replace defective or damaged materials with new.
Part 2 Products
2.1 DESIGN REQUIREMENTS .1 Detail connections as shown on design drawings. .2 Design connections and other work not detailed on drawings, but necessary for completion of the Work, in accordance with requirements of Ontario Building Code and CAN/CSA-S16.
2.2 MATERIALS .1 Structural steel: to CSA-G40.20/G40.21 as listed below: .1 WWF, W, WT, and S shapes Grade 350 W .2 HSS sections Grade 350 W Class C .3 Angles and channels Grade 300 W .4 Steel pipe ASTM A53, Type “S”, Grade B .2 Bolts, nuts and washers: to ASTM A325 or ASTM A325M. .3 Welding materials: to CSA W59, Series E49XX low hydrogen type dry welding electrodes and certified by Canadian Welding Bureau. .4 Hot dip galvanizing: galvanize steel, to ASTM A123, minimum zinc coating of 600 g/m2. .5 Shear studs: to CSA W59, Appendix H. .6 Floor Plate: minimum 6 mm thick (exclusive of raised pattern), with skid resistant, raised medium pattern, and conform to ASTM A36 and A786. .7 Grating: .1 Conform to Metal Bar Grating Manual ANSI/NAAMM MBG531.00. .2 Type 19-W-4 with bearing bar size 38mm x 4.8mm, serrated, unless noted otherwise. .3 Hot-dip galvanized in accordance with ASTM A123. .4 Band ends of grating panel. Banding bars to be of the same height as the main bearing bar.
2.3 FABRICATION .1 Fabricate structural steel in accordance with CAN/CSA-S16, CISC Code of Standard Practice for Structural Steel, and in accordance with reviewed shop drawings. .2 Install shear studs in accordance with CSA W59. 14-1538-002 Section 05 12 23 June 2016 STRUCTURAL STEEL Drag Lake Dam Rehabilitation Page 4
.3 Fabricate work square, true, straight and accurate to required size, with joints closely fitted and properly secured. .4 Where possible, fit and shop assemble work, ready for erection. .5 Ensure exposed welds are continuous for length of each joint. File or grind exposed welds smooth and flush.
2.4 GALVANIZING .1 Unless noted otherwise, all structural steel members, miscellaneous steels, and connections shall be zinc ‘hot-dip’ galvanized after fabrication in accordance with all pertinent ASTM standards and primarily ASTM A123/A123M. The minimum average zinc coating thickness is dictated in Table 1 of the ASTM A123/A123M standard and shall generally meet or exceed 600 g/m2. Where welding after galvanizing is necessary, the zinc shall be removed by grinding and the damage repaired in accordance with ASTM A780/A780M.
Part 3 Execution
3.1 APPLICATION .1 Manufacturer's Instructions: comply with manufacturer's written recommendations, including product technical bulletins, handling, storage and installation instructions, and datasheets.
3.2 GENERAL .1 Structural steel work: in accordance with CAN/CSA-S16. .2 Welding: in accordance with CSA W59. .3 Companies to be certified under Division 1 or 2.1 of CSA W47.1 for fusion welding of steel structures and/or CSA W55.3 for resistance welding of structural components.
3.3 CONNECTION TO EXISTING WORK .1 Verify dimensions and condition of existing work, report discrepancies and potential problem areas to Consultant for direction before commencing fabrication.
3.4 MARKING .1 Mark materials in accordance with CSA G40.20/G40.21. Do not use die stamping. When steel is to be left in unpainted condition, place marking at locations not visible from exterior after erection. .2 Match marking: shop mark bearing assemblies and splices for fit and match.
3.5 ERECTION .1 Erect structural steel, as indicated and in accordance with CAN/CSA-S16, CISC Code of Standard Practice for Structural Steel, and in accordance with reviewed erection drawings. .2 Field cutting, drilling, or altering structural members: to approval of Consultant. 14-1538-002 Section 05 12 23 June 2016 STRUCTURAL STEEL Drag Lake Dam Rehabilitation Page 5
.3 All high-strength bolts are to be installed to a snug tight condition in accordance with CAN/CSA-S16 and CISC Code of Standard Practice for Structural Steel.
3.6 FIELD QUALITY CONTROL .1 Inspection of materials and workmanship will be carried out by Consultant. .2 Provide safe access and working areas for testing on site, as required by Consultant. .3 Inspection by Consultant will not augment or replace Contractor quality control nor relieve Contractor of his contractual responsibility.
3.7 FIELD PAINTING .1 The Contractor is responsible for field touch-up coating. Field touch-up coating must provide an unbroken coating film equal to the original coating in accordance with this specification. .2 All welds on galvanized members, and where galvanizing has been damaged during erection and handling, are to be touched up with galvafroid zinc rich paint .3 Submit touch-up paint datasheet and painting procedures for Consultant’s approval. .4 Prepare surface and paint in accordance with SSPC and manufacturer’s recommendations.
3.8 CLEANING .1 Clean in accordance with Section 01 74 11 - Cleaning.
END OF SECTION 14-1538-002 Section 05 51 29 June 2016 METAL STAIRS Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 05 12 23 – Structural Steel
1.2 REFERENCES .1 American National Standards Institute/National Association of Architectural Metal Manufacturers (ANSI/NAAMM) .1 ANSI/NAAMM MBG 531-09, Metal Bar Grating Manual. .2 ASTM International .1 ASTM A53/A53M-12, Standard Specification for Pipe, Steel, Black and Hot- Dipped, Zinc-Coated Welded and Seamless. .2 ASTM A123/A123M-15, Standard Specification for Zinc (hot-Dip Galvanized) Coatings on Iron and Steel Products. .3 ASTM A325M-14, Standard Specification for Structural Bolts, Steel, Heat Treated, 830 MPa Minimum Tensile Strength [Metric]. .3 Canadian General Standards Board (CGSB) .1 CAN/CGSB-1.40-97, Anti-corrosive Structural Steel Alkyd Primer. .2 CAN/CGSB-1.181-99, Ready-Mixed Organic Zinc-Rich Coating. .4 CSA International .1 CSA G40.20/G40.21-13, General Requirements for Rolled or Welded Structural Quality Steel/Structural Quality Steel. .2 CSA W59-13, Welded Steel Construction (Metal Arc Welding). .5 Health Canada / Workplace Hazardous Materials Information System (WHMIS) .1 Material Safety Data Sheets (MSDS). .6 National Association of Architectural Metal Manufactures (NAAMM) .1 AMP 510-06, Metal Stair Manual. .7 The Society for Protective Coatings (SSPC) .1 Systems and Specifications Manual, Volume 2, 2008 Edition.
1.3 ACTION AND INFORMATIONAL SUBMITTALS .1 Submit in accordance with Section 01 33 00 - Submittal Procedures. .2 Product Data: .1 Submit manufacturer's instructions, printed product literature and data sheets for stairs and include product characteristics, performance criteria, physical size, finish and limitations. .3 Shop Drawings: 14-1538-002 Section 05 51 29 June 2016 METAL STAIRS Drag Lake Dam Rehabilitation Page 2
.1 Submit drawings stamped and signed by professional engineer registered or licensed in Province of Ontario, Canada. .2 Indicate construction details, sizes of steel sections and thickness of steel sheet.
1.4 QUALITY ASSURANCE .1 Test Reports: submit certified test reports showing compliance with specified performance characteristics and physical properties. .2 Certifications: submit product certificates signed by manufacturer certifying materials comply with specified performance characteristics and criteria and physical requirements.
1.5 DELIVERY, STORAGE AND HANDLING .1 Deliver, store and handle materials in accordance with manufacturer's written instructions. .2 Delivery and Acceptance Requirements: deliver materials to site in original factory packaging, labelled with manufacturer's name and address. .3 Storage and Handling Requirements: .1 Store materials in dry location and in accordance with manufacturer's recommendations in clean, dry, well-ventilated area. .2 Store and protect stairs from nicks, scratches, and blemishes. .3 Replace defective or damaged materials with new.
Part 2 Products
2.1 SYSTEM DESCRIPTION .1 Design Requirements: .2 Design metal stair, balustrade and landing construction and connections to NBC vertical and horizontal live load requirements. .3 Detail and fabricate stairs to NAAMM Metal Stairs Manual.
2.2 MATERIALS .1 Steel stringer sections (channels): to CSA G40.20/G40.21 Grade 300 W. .2 Steel tubing: to CSA G40.20/G40.21, Grade 350W, square, wall thickness, sizes and dimensions as indicated. .3 Metal bar grating: to ANSI/NAAMM MBG 531, steel, Type W-19-4, with checkered plate nosings, serrated 38mm x 4.8mm bearing bar, hot dip galvanized. .4 Welding materials: to CSA W59. .5 High strength bolts: to ASTM A325M.
2.3 FABRICATION .1 Fabricate in accordance with NAAMM, Metal Stair Manual. 14-1538-002 Section 05 51 29 June 2016 METAL STAIRS Drag Lake Dam Rehabilitation Page 3
.2 Weld connections where possible, otherwise bolt connections. Countersink exposed fastenings, cut off bolts flush with nuts. Make exposed connections of same material, colour and finish as base material on which they occur. .3 Accurately form connections with exposed faces flush: .1 Make mitres and joints tight. .2 Make risers of equal height. .4 Grind or file exposed welds and steel sections smooth. .5 Shop fabricate stairs in sections as large and complete as practicable.
2.4 PLATE/GRATING STAIRS .1 Form treads from 6 mm thick steel plate to profile indicated, and secure to stringers with L 35 x 35 x 5 supports. Form landings from 6 mm thick steel plate, reinforced by L 55 x 55 x 6 spaced at 600 mm on centre. .2 Form steel grating treads and landings from metal bar grating to profile indicated and secure to stringers and supports as indicated. Form landings of steel grating and reinforce as required. .3 Form stringers from C250 x 23, unless noted otherwise on design drawings.
2.5 PIPE/TUBING BALUSTRADES .1 Construct balusters and handrails from steel tubing. .2 Cap and weld exposed ends of balusters and handrails. .3 Terminate at abutting wall with end flange.
2.6 FINISHES .1 Galvanizing: hot dipped galvanizing with zinc coating 600 g/m2 to ASTM A123.
Part 3 Execution
3.1 EXAMINATION .1 Verification of Conditions: verify conditions of substrates previously installed under other Sections or Contracts are acceptable for metal stairs and ladders installation in accordance with manufacturer's written instructions. .1 Visually inspect substrate in presence of Consultant. .2 Inform Consultant of unacceptable conditions immediately upon discovery. .3 Proceed with installation only after unacceptable conditions have been remedied and after receipt of written approval to proceed from Consultant.
3.2 INSTALLATION OF STAIRS .1 Install in accordance with NAAMM, Metal Stair Manual. 14-1538-002 Section 05 51 29 June 2016 METAL STAIRS Drag Lake Dam Rehabilitation Page 4
.2 Install plumb and true in exact locations, using welded connections wherever possible to provide rigid structure. Provide anchor bolts, bolts and plates for connecting stairs to structure. .3 Hand items over for casting into concrete or building into masonry to appropriate trades together with setting templates. .4 Do welding work in accordance with CSA W59 unless specified otherwise. .5 Touch up shop primer to bolts, welds, and burned or scratched surfaces at completion of erection.
3.3 INSTALLATION OF PLASTIC HANDRAIL .1 Apply plastic handrails in accordance with manufacturer's printed instructions, using recommended tools. .2 Make joints and mitres neat, tight and inconspicuous. Remove surplus material from joint. Provide solid return at exposed ends of handrail.
3.4 CLEANING .1 Progress Cleaning: clean in accordance with Section 01 74 11 - Cleaning. .1 Leave Work area clean at end of each day. .2 Final Cleaning: upon completion remove surplus materials, rubbish, tools and equipment in accordance with Section 01 74 11 - Cleaning.
3.5 CLEANING .1 Perform cleaning as soon as possible after installation to remove construction and accumulated environmental dirt. .2 Clean and wax plastic handrails immediately prior to final inspection. .3 Upon completion of installation, remove surplus materials, rubbish, tools and equipment barriers.
3.6 PROTECTION .1 Protect installed products and components from damage during construction. .2 Repair damage to adjacent materials caused by metal stairs and ladders installation.
END OF SECTION 14-1538-002 Section 31 11 00 June 2016 CLEARING AND GRUBBING Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 RELATED REQUIREMENTS .1 Section 013543 – Environmental Procedures
1.2 MEASUREMENT PROCEDURES .1 Fixed price payment will be made for: .1 Clearing. .2 Close cut clearing. .3 Clearing isolated trees. .4 Grubbing.
1.3 REFERENCES .1 U.S. Environmental Protection Agency (EPA)/Office of Water .1 EPA 832R92005, Storm Water Management for Construction Activities: Developing Pollution Prevention Plans and Best Management Practices.
1.4 DEFINITIONS .1 Clearing consists of cutting off trees and brush vegetative growth to not more than specified height above ground and disposing of felled trees, previously uprooted trees and stumps, and surface debris. .2 Close-cut clearing consists of cutting off standing trees, brush, scrub, roots, stumps and embedded logs, removing at, or close to, existing grade and disposing of fallen timber and surface debris. .3 Clearing isolated trees consists of cutting off to not more than specified height above ground of designated trees, and disposing of felled trees and debris. .4 Underbrush clearing consists of removal from treed areas of undergrowth, deadwood, and trees smaller than 50 mm trunk diameter and disposing of fallen timber and surface debris. .5 Grubbing consists of excavation and disposal of stumps and roots, boulders and rock fragments of specified size to not less than specified depth below existing ground surface.
1.5 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Samples: .1 Submit 3 samples of each material listed below for approval prior to delivery of materials to project site. .2 Tree wound paint: one liter can with manufacturer's label. .3 Herbicide: one liter can with manufacturer's label. 14-1538-002 Section 31 11 00 June 2016 CLEARING AND GRUBBING Drag Lake Dam Rehabilitation Page 2
.3 Submit certificates signed by manufacturer certifying that materials comply with specified performance characteristics and physical properties. .4 Submit manufacturer's installation instructions.
1.6 QUALITY ASSURANCE .1 Do construction occupational health and safety in accordance with Section 01 35 29 - Health and Safety Requirements. .2 Safety Requirements: worker protection. .1 Workers must wear gloves, long sleeved clothing, eye protection, protective clothing when applying herbicide materials. .2 Workers must not eat, drink or smoke while applying herbicide material. .3 Clean up spills of preservative materials immediately with absorbent material and safely discard to landfill.
1.7 STORAGE AND PROTECTION .1 Prevent damage to trees, site appurtenances, water courses, root systems of trees which are to remain. .1 Repair damaged items to approval of Departmental Representative. .2 Replace trees designated to remain, if damaged, as directed by Departmental Representative.
1.8 WASTE MANAGEMENT AND DISPOSAL .1 Separate waste materials for recycling. .2 Consider felled timber from which saw logs, pulpwood, posts, poles, ties, or fuel wood can be produced as saleable timber.
Part 2 Products
2.1 MATERIALS .1 Bituminous based paint of standard manufacture specially formulated for tree wounds. .2 Soil Material for Fill: .1 Excavated soil material: free of debris, roots, wood, scrap material, vegetable matter, refuse, soft unsound particles, deleterious, or objectionable materials. .2 Remove and store soil material for reused.
Part 3 Execution
3.1 TEMPORARY EROSION AND SEDIMENTATION CONTROL .1 Provide temporary erosion and sedimentation control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to sediment and erosion control plan, specific to site, that complies 14-1538-002 Section 31 11 00 June 2016 CLEARING AND GRUBBING Drag Lake Dam Rehabilitation Page 3
with EPA 832/R-92-005 or requirements of authorities having jurisdiction, whichever is more stringent. .2 Inspect, repair, and maintain erosion and sedimentation control measures during construction. .3 Remove erosion and sedimentation controls and restore and stabilize areas disturbed during removal.
3.2 PREPARATION .1 Inspect site and verify with Consultant, items designated to remain. .2 Locate and protect utility lines: preserve in operating condition active utilities traversing site. .1 Notify Departmental Representative immediately of damage to or when unknown existing utility lines are encountered. .2 When utility lines which are to be removed are encountered within area of operations, notify Departmental Representative in ample time to minimize interruption of service. .3 Notify utility authorities before starting clearing and grubbing. .4 Keep roads and walks free of dirt and debris.
3.3 APPLICATION .1 Manufacturer's instructions: comply with manufacturer's written recommendations or specifications, including product technical bulletins, handling, storage and installation instructions, and datasheet.
3.4 CLEARING .1 Clearing includes felling, trimming, cutting of trees into sections and satisfactory disposal of trees and other vegetation designated for removal, including downed timber, snags, brush, rubbish occurring within cleared areas. .2 Clear as indicated by Departmental Representative, by cutting at height of not more than 300 mm above ground. .3 Cut off branches, cut down trees overhanging area cleared as directed by Departmental Representative. .4 Cut off unsound branches on trees designated to remain as directed by Departmental Representative.
3.5 CLOSE CUT CLEARING .1 Close cut clearing to ground level. .2 Cut off branches and cut down trees overhanging area cleared as directed by Departmental Representative. .3 Cut off unsound branches on trees designated to remain as directed by Departmental Representative. 14-1538-002 Section 31 11 00 June 2016 CLEARING AND GRUBBING Drag Lake Dam Rehabilitation Page 4
3.6 ISOLATED TREES .1 Cut off isolated trees as indicated by Departmental Representative at height of not more than 300 mm above ground surface. .2 Grub out isolated tree stumps. .3 Prune individual trees as indicated. .4 Trim trees designated to be left standing within cleared areas of dead branches 4 cm or more in diameter; and trim branches to heights as indicated. .5 Cut limbs and branches to be trimmed close to bole of tree or main branches. .6 Paint cuts more than 3 cm in diameter with approved tree wound paint.
3.7 UNDERBRUSH CLEARING .1 Clear underbrush from areas as indicated at ground level.
3.8 GRUBBING .1 Remove and dispose of roots larger than 7.5 cm in diameter, matted roots, and designated stumps from indicated grubbing areas. .2 Grub out stumps and roots to not less than 200 mm below ground surface. .3 Grub out visible rock fragments and boulders, greater than 300 mm in greatest dimension, but less than 0.25 m3. .4 Fill depressions made by grubbing with suitable material and to make new surface conform with existing adjacent surface of ground.
3.9 REMOVAL AND DISPOSAL .1 Remove cleared and grubbed materials off site to disposal area. .2 Burning of cleared or grubbed materials is prohibited, unless approved by Departmental Representative.
3.10 FINISHED SURFACE .1 Leave ground surface in condition suitable for construction to approval of Consultant.
3.11 CLEANING .1 Proceed in accordance with Section 01 74 11 - Cleaning. .2 On completion and verification of performance of installation, remove surplus materials, excess materials, rubbish, tools and equipment.
END OF SECTION 14-1538-002 Section 31 68 13 June 2016 POST-TENSIONED ANCHOR Drag Lake Dam Rehabilitation Page 1
Part 1 General
1.1 DESCRIPTION .1 This section specifies requirements for supply, installation and testing of double corrosion protected (DCP), post-tensioned anchors as shown on the Drawings and as specified herein, including but not limited to: .1 Drilling of anchor holes; .2 Supply and installation of anchors; .3 Grouting of anchors by primary grouting; .4 Post-grouting the anchors.
1.2 DEFINITIONS .1 ANCHOR: the complete anchor assembly consisting of anchorage and prestressing steel complete with corrosion protection, bond breaker in free stressing length, external centralizers and grout. .2 MULTISTRAND ANCHOR: anchor using prestressing steel elements consisting of multiple uncoated, seven-wire, low relaxation strands. .3 CORROSION PROTECTION: corrugated sheathing around the prestressing steel filled with grout. .4 PRIMARY GROUT: Portland cement grout that is injected into the anchor hole to allow the anchor to transfer load to the surrounding ground along the bond length of the anchor. .5 ANCHOR INSTALLATION: the complete operation including but not limited to, assembling the anchor components including the anchor head, strands, corrosion protection, grout tubes, insertion of the anchor, grouting, and stressing of anchors. .6 BOND LENGTH: the length of the grout body that transmits the anchor load to the surrounding soil or rock. .7 ANCHOR BOND LENGTH: the length of prestressing steel that is bonded to the grout. .8 FREE STRESSING LENGTH: the length of prestressing steel that is not bonded to the surrounding ground or grout during stressing.
1.3 REFERENCES .1 ASTM A36/A36M - Standard Specifications for Structural Steel. .2 ASTM A416 - Standard Specification for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete. .3 ASTM A722 - Standard Specification for Uncoated High-Strength Steel Bar for Prestressing Concrete. .4 ASTM Standard D1743 - Test Method for Corrosion Preventive Properties of Lubricating Grease. .5 ASTM Standard D4101 - Specification for Polypropylene Plastic Injection and Extrusion Materials.
14-1538-002 Section 31 68 13 June 2016 POST-TENSIONED ANCHOR Drag Lake Dam Rehabilitation Page 2
.6 ASTM A123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. .7 CSA A23.3 Design of Concrete Structures. .8 ACI 318 - Building Code Requirements for Structural Concrete. .9 Post-Tensioning Institute (PTI) - Recommendations for Prestressed Rock and Soil Anchors.
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Provide submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Contractor shall submit the following data for approval by the Consultant two (2) weeks prior to anchor installation: .1 certified mill report for the strand; .2 certified mill report for stressing head assembly; .3 certification for compressive and tensile strength of corrugated sheathing; .4 site certificate that sheathing is 100% "holiday" or pinhole free as determined by electrostatic testing or other approved testing method; .5 grout mix designs; .6 anchor installation and testing procedures; and .7 sample forms to record and document drilling, grouting operations, as well as stressing, and testing records .1 The Contractor shall submit detailed Shop Drawings thirty (30) days prior to anchor installation showing, for each anchor: .1 anchor length and positioning; .2 location, type, and size of spacers, centralizers, couplers; .3 grout tube lengths; .4 anchor head assembly, including trumpet, bearing plate, wedge plate, anchor nut, anchorage cover; .5 sheathing dimensions; .6 depth of hole, indicating bond length and free stressing length; and .7 description of grease, wax, or grout intended for use as a corrosion preventing compound. .2 Each Shop Drawing submission shall bear stamp and signature of qualified professional engineer registered or licensed to practice in the Province of Ontario. .3 The Contractor shall submit general descriptions of grouting, drilling, testing and stressing equipment to Consultant for acceptance a minimum of thirty (30) days prior to mobilizing to the Site.
1.5 QUALITY ASSURANCE .1 The Contractor shall provide sufficient experienced supervisory and operating personnel, labour, spare parts and tools to carry out each phase of the Work properly and expeditiously. .2 A qualified representative of the anchor manufacturer shall supervise the installation and performance testing of the first three anchors.
14-1538-002 Section 31 68 13 June 2016 POST-TENSIONED ANCHOR Drag Lake Dam Rehabilitation Page 3
.3 Inspection and testing of the cement grout for anchors shall be carried out by a testing laboratory designated by Departmental Representative in accordance with CSA A23.1. .4 A minimum of three 50 mm test cubes per daily grout batch shall be taken or more as directed by the Consultant.
1.6 ANCHOR SUPPLIERS .1 Submit name of anchor supplier, information on products, examples of shop drawings, any relevant project descriptions, identifying the size, type, and number of anchors installed. The Consultant shall review and approve the proposed supplier based on this submitted information.
Part 2 Products
2.1 ANCHORS .1 General Anchor Assembly .1 Each anchor shall consist of prestressing steel encased in sheathing, with the annular space between the sheathing and rock or soil filled with grout. .2 Multistrand anchors shall be low relaxation seven-wire strand (uncoated), conforming to ASTM A416. HDPE corrugated sheathing shall be provided over the full-length of the anchor. Strands shall be encapsulated in corrosion inhibitor and HDPE tubing to prevent bond in the free stressing length. The transition between bond length and free stressing length on each strand shall be sealed with a heat shrink sleeve. The bottom end of the corrugated sheathing shall be capped. .3 Each anchor shall be pre-assembled at the factory. The sheathing shall form a gas and watertight barrier around the pre-stressing steel. .4 A steel trumpet (pipe sleeve) shall guarantee continuity of corrosion protection under the anchor bearing plate. A cover cap will cover the anchor nut and/or wedge plate, and any load verification devices (if applicable). The trumpet and cover cap will be filled with a corrosion inhibiting compound to encapsulate the final installation. .2 Prestressing Steel: .1 Anchors shall be fabricated from prestressing steel strand as shown on the Drawings. .2 Prestressing steel strand shall be low relaxation seven-wire strand (uncoated), 15.24 mm (0.6 in.) diameter, Grade 1862 MPa (270 ksi), conforming to ASTM A416.
14-1538-002 Section 31 68 13 May 2016 POST-TENSIONED ANCHOR Drag Lake Dam Rehabilitation Page 4
.3 Anchorages: .1 The post-tensioned anchors shall be anchored at the top by transferring the stressing load from the jack to a suitably configured anchorage assembly whereby the strands are secured by anchor nuts or grippers and plates. .2 The anchor head for strand anchors shall include the multiple strand wedge plate, two or three part grippers, steel bearing plate, trumpet, cap, and any shims that may be required. Minimum yield strength of the steel shall be 300 MPa (43.5 ksi). All anchor heads shall be externally threaded, and re-stressing assemblies shall be supplied that will thread onto the anchor heads so that periodic lift-off tests can be performed in the future. .3 Bearing plates, trumpets, caps and any shims that may be required shall be hot- dip galvanized in accordance with ASTM A123, with a minimum zinc coating of 600 g/m2. .4 The wedge plate and grippers for stand anchors, shall be fully compatible and shall be designed to reduce seating losses. .5 The trumpet shall be fabricated from a steel pipe or tube conforming to the requirements of ASTM A53 for pipe or ASTM A500 for tubing, with a minimum thickness of 5 mm. .6 The protective steel cap, screwed to the wedge plate, complete with injection and vent ports for injection of corrosion inhibitor, shall have a minimum thickness of 2.3 mm. The joint between the cap and the bearing plate shall be made watertight with an o-ring gasket or silicone seal. The cap shall have a watertight exit port for load verification device cable (if required). .7 Additional anchor head encasement or cover plate shall be as detailed on the Drawings. .4 Corrosion Inhibiting Compounds: .1 Corrosion inhibiting compounds in the free stressing length or in the anchorage area shall be an organic compound with corrosion inhibiting additives and appropriate moisture-displacing, and self-healing properties. The compound shall stay viscous permanently and be chemically stable and non-reactive with the pre- stressing steel, the sheathing material, or the anchor grout. .2 The steel strand in the free stressing length of a multistrand anchor shall be protected with a PTI approved micro-wax that is applied to each individual wire of the pre-stressing strand and shall be encapsulated within HDPE tubing through one of the following two processes: .1 Extrusion Method - The micro-wax is heated to a liquid state and applied to each individual wire. Once it cools, HDPE sheathing is extruded over the strand. The resulting product should have a void-free annulus around and inside the strand that prevents the ingress of moisture under capillary or hydrostatic pressure. .2 Encapsulation Method - The strand travels through a spreader die, positioned inside a hot-liquid wax chamber and is then pushed into an HDPE tube. The finished product shall be “void-free” and resistant to hydrostatic water pressure.
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.3 The corrosion inhibiting compound inside the anchor cap shall be grease conforming to Section 2.4 of the PTI Field Procedures Manual for Unbonded Single Strand Tendons. .5 Plastic Sheathing: .1 Corrugated sheathing shall be HDPE, the smooth sheathing bond breaker for strand encapsulation shall be HDPE tubing, and all shall have the following properties: .1 free of water-soluble chlorides and other ingredients, which might enhance corrosion, hydrogen embrittlement or stress corrosion of the prestressing steel; .2 resistant to chemical attack from aggressive environment, grout or corrosion inhibiting compound; .3 gas and watertight (tightness shall be verified by holiday testing on site prior to installation); .4 resistant to aging by ultra-violet light; .5 non-detrimental to the tendon, and non-reactive with grout and its ingredients; .6 resistant to damage caused by abrasion, impact, crushing and bending during installation; .7 enable the tendon to elongate during testing and stressing; and .8 resistant to distortion caused by heat generated by the curing of the grout .2 The corrugated HDPE sheathing shall have a minimum compressive strength of 102 MPa (14,500 psi) and a minimum tensile strength of 50 MPa (7,250 psi). The inner diameter of the sheathing shall be as required by the manufacturer. .3 The corrugated HDPE sheathing shall be 1.3 mm (0.052 in.) minimum wall thickness. The profile of the corrugated HDPE sheathing shall have a sinusoidal or concentric profile with equal distances (approximately 10 mm) between adjacent crests and valleys. .4 Corrugated sheathing shall not be spliced. Splices in the smooth outer sheathing bond breaker shall be butt fusion welded to achieve the required length. .5 Outer sheathing centralizers shall be provided between the outer sheathing and the drill hole spaced at 3000 mm (120 in.) maximum to provide a minimum grout cover of 13 mm between the outer sheathing and the sides of the drill holes, or larger depending on the thickness of the external grout tubes or as recommended by the anchor supplier. All sheathing centralizers shall be plastic and designed to not restrict the flow of grout or to shift during the installation of the anchor. The centralizers shall also be designed so as not to cause crushing or damage to the outer sheathing. .6 The upper end of the outer sheathing shall terminate inside the transition pipe (trumpet) below the bearing plate. .7 If the corrosion protection sheathing is damaged prior to installation, the Consultant shall supervise the repair work using one of the following two methods: .1 For minor damage such as holes, nicks, and abrasions, the sheathing shall be wrapped in a self-bonding, mouldable rubber or silicone tape. The
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repair shall extend for a minimum of 50 mm in all directions, and shall be applied according to the manufacturer’s written recommendations. Acceptable products: Kearney Aqua Seal Tape & Patches, Nitto No. 15 Self-Fusing Tape, Cole-Flex type TYT200 Self-Fusing Silicone Tape .2 For significant damage such as tears, or complete separation, the sheathing shall be cut back to undamaged material, and the two ends shall be pulled together and fastened together with an approved self- bonding, mouldable rubber or silicone tape or sleeve. The splice shall be sufficiently robust for handling and installation. Acceptable products: Kearney Splice Wrap, Kearney Aqua Seal Tape, Nitto No. 15 Self- Fusing Tape, Cole-Flex type TYT200 Self-Fusing Silicone Tape. .8 If other sheathing repair methods are more suitable, the Consultant shall review and approve the method of repair of the damage as recommended by the anchor supplier. Damage considered unrepairable by the Consultant will be cause for rejection of the anchor assembly. .6 Grout Tubes: .1 Grout tubes for primary grouting shall be nominally 20 mm (0.75 in.) OD. Grout tubes shall have an ultimate bursting pressure of 3.4 MPa (500 psi). Means for reliably attaching the grout tubes to the outer sheathing shall be designed so as to not cause crushing or damage to the tubes. .2 Provide sufficient grout tubes to allow grouting of the outer annuluses of the anchor and include provision for grouting of the anchor head, for which smaller diameter grout tubes will be required.
2.2 GROUT MATERIALS .1 Consolidation Grout: .1 Consolidation grout shall use Type GU or HE Portland cement; .2 Contractor to submit grout mix design to Consultant for approval. Admixtures may be used to plastify and increase viscosity of the grout as well as provide an expanding component to reduce grout shrinkage. .2 Primary Grout: .1 Grout shall be Target Products Ltd. 1118 Unsanded Silica Fume Grout, Ocean Microsil Silica Fume Grout, or approved alternate. .2 Grout shall have a minimum strength of 30 MPa (4,350 psi) at time of stressing to guarantee load transfer between the sheathing and grout. Grout for inclined anchors shall have Sika Intraplast expansion admixture or equivalent.
2.3 ANCHOR LOAD VERIFICATION DEVICES: .1 Anchor heads, where indicated on the Drawings, shall be equipped with 6-wire vibrating wire load cells complete with bearing plates, pre-installed cables at the ends of cells and cable connectors at the ends of readouts. Acceptable products: Rocktest Ltd. VH-Series or approved equal. .2 Contractor shall supply a vibrating wire readout device that reads, displays, and logs vibrating wire sensors for all of the load cells supplied. Acceptable products: Campbell VW Analyzer or approved equal.
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.3 Contractor shall supply and install a NEMA Type 4X Keyed cabinet enclosure on site to store cable ends of load cells.
2.4 ANCHOR RE-STRESSING ASSEMBLIES: .1 Contractor will supply threaded anchor re-stressing assemblies, compatible with each size of threaded anchor head supplied, for future lift-off testing and load adjustment.
Part 3 Execution
3.1 GENERAL REQUIREMENTS .1 The Contractor shall supply, handle, maintain, operate, dismantle and protect from the weather all materials, and Contractor's Plant and Equipment required for the performance of the Work. The Contractor may use equipment of its own preference, except as specifically stated otherwise herein, and subject to requirements of performance and quality imposed by relevant clauses of this section and as shown on the Drawings. Equipment items, which, in the opinion of the Consultant, do not meet such requirements, shall be replaced forthwith by the Contractor with Contractor's Plant and Equipment meeting such requirements. .2 Equipment shall be maintained at all times in first class operating condition. Drip trays, containing oil absorbent material shall be located under all oil/grease-containing sections of the drilling equipment. These trays shall be cleaned out and the absorbent material replaced regularly. .3 The Contractor shall provide sufficient pump capacity and storage to ensure a continuous supply of clean water at all times for all washing and grouting operations.
3.2 DRILL HOLES FOR POST-TENSIONED ANCHORS .1 Drill Holes: The holes shall be drilled to the diameter, depth, line and tolerances indicated, with diameter at least 1 in. (25 mm) greater than the sheathing, or larger according to the recommendation of the anchor supplier. .2 Tolerances: Completed drill holes must be within the following tolerances .1 Location of collar within ± 0.5 in. (± 13 mm) of designated location; .2 Deviation from specified alignment shall not exceed ± 2 in. per 120 in. depth (±50 mm per 3000 mm depth) and 6 in. (150 mm) over the entire drilled depth; .3 Diameter + 0.5 in. (+ 13 mm), - 0; .4 Depth + 12 in. (+ 300 mm), - 0; and .5 Angle ± 0.5 degrees of planned location. .3 The Contractor shall check the alignment of each drill hole as directed by the Consultant using an instrument accepted by the Consultant for performing said measurements. Upon completion of a drill hole, Consultant shall sign off the hole if it is within the specified tolerance. .4 The Contractor may use drilling equipment of its own preference, except as otherwise specified. Such equipment shall be capable of drilling holes of the sizes and to the depths and tolerances and at the locations specified, and shall be capable of drilling through wood, concrete, reinforcing steel, form ties and other miscellaneous steel objects to the
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satisfaction of the Consultant, otherwise the equipment shall be removed from the Work Site and be replaced with suitable equipment at no additional cost to PCA. .5 Method of Drilling: Core drilling, rotary drilling, or down-the-hole hammer and / or bottom of the hole percussion rock drilling may be employed as the conditions warrant. Rod dope, grease or other lubricants shall not be used on drill rods or other equipment inserted into drill holes. Drilling fluid additives or foaming agents of any kind shall not be used except with the written permission of the Consultant. Steel reinforcement may be encountered near the surface of the existing concrete sections. .6 The contractor shall have provision to handle and control groundwater flow that may be encountered during drilling. .7 Spacing of Work: A minimum spacing of 3050 mm shall be maintained between a hole being drilled and a hole which is being grouted or which has been grouted within the past 24 hours. If grout flow, indicating interconnection of the holes, is encountered during drilling, drilling shall be suspended. .8 Capping of Holes: On completion of drilling and water pressure testing of each hole, the Contractor shall immediately cap or plug the hole with a wooden plug or steel cap and shall protect it from entry of grease, oil, dirt, muck, grout, surface water, or any other material. .9 Records: The Contractor shall, each day, provide the Consultant with an accurate record on an approved form, of all drilling carried out on the previous day. The information shall include list of equipment used, size and length of hole drilled, rate of drill penetration, nature and characteristics of materials encountered in each hole and the levels at which materials were encountered, levels at which water was encountered, levels at which cuttings, air or washwater were lost, encounters with foreign objects, bit usage and unusual incidents which occurred in the course of drilling. .10 Drill cuttings shall be contained within lined skip boxes and disposed of in a location designated by the Consultant. Contractor must prevent all drill cuttings from entering the waterway.
3.3 WATER PRESSURE TESTING OF ANCHOR HOLES .1 Pressure Testing: Each anchor hole shall be water pressure tested and monitored for water tightness at 0.35 atmosphere (5 psi) above static head pressure within the hole, or as directed by the Consultant. Holes shall be washed with water and air prior to pressure testing until return water is clean. If monitoring determines that water loss over a period of 10 minutes is greater than 1 litre/min, then the hole shall be consolidation grouted, re- drilled and re-tested. If necessary, this process will be repeated until satisfactory water tightness is achieved. .2 Pressure Testing Equipment: The water testing shall be done by the gravity method (i.e. filling the hole and monitoring water level drop in the hole). In lieu of a gravity test, the Consultant may require a pressure test using an apparatus subject to the approval of the Consultant. It shall be calibrated by the Contractor and shall be subject to periodic tests, as directed by the Consultant, for accuracy and operation satisfactory to the Consultant. Water under pressure shall be injected into each hole, either by direct connection to the collar of the hole or by use of packers at depth in the hole, as directed by the Consultant.
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.3 Records: The Contractor shall record and submit daily on a form approved by the Consultant the pressure, total quantity of water injected, quantity of water per foot of tested length, depth of test, type of test (packer, gravity, direct connection) for each water pressure test carried out. .4 Holes adjacent to a hole being tested for water tightness shall be observed by the Contractor during the test so that any inter-hole connection can be more easily detected. Observations will be recorded if the leakage exceeds that specified, and the hole shall be consolidated grouted. The Contractor shall monitor and record the quantity of consolidation grout used for comparison with the theoretical volume of the hole. .5 Re-drilling: Consolidation grouted holes shall be re-drilled commencing not sooner than 12 hours after the consolidation grout has been placed. Re-drilling shall be done when the grout strength is less than the strength of the surrounding rock. The holes shall be re-tested and if the second water pressure test does not meet the requirements specified above, the entire process shall be repeated.
3.4 GROUTING EQUIPMENT .1 The grout plant shall have a high-speed mixer and agitator and be capable of thoroughly mixing and agitating a grout mixture having a water-cement ratio between 0.25:1 and 5.0:1. All water-cement ratios are based on the weights of the materials. .2 Grouting equipment shall be of continuous mechanical mixing and pumping to produce a grout free of lumps and undispersed cement at a capacity of 1200 litres per hour and a minimum pumping pressure of 2000 kPa (300 psi) for primary grouting. Pumping distances between the grout plant and the grout hole shall not be greater than 15 m or as approved by the Consultant. .3 The Contractor shall test the accuracy of all water meters before starting the Work in the presence of the Consultant or shall provide the Consultant with a copy of the calibration. A strainer with a cleaning valve shall be provided in the water supply line upstream of the meter to prevent sand and other abrasive particles from entering the meter. Contractor shall test the meters periodically when required by the Consultant and shall repair such meters if necessary. .4 Pressure gauges shall suit the range of grouting pressures used. The Contractor shall provide a standard master gauge, against which all other gauges shall be checked periodically as directed by the Consultant for accuracy and satisfactory operation. .5 All rods, hoses valves, joints and couplings shall be capable of withstanding pressures 50% greater than the pump discharge pressure.
3.5 CONSOLIDATION GROUTING OF ANCHOR HOLES .1 Consolidation grouting of drill holes will be performed as and where directed by the Consultant. .2 If active flow of water is encountered or anticipated within the borehole, the Contractor shall submit a proposed grouting method which will prevent the loss of grout. Grout may be prepared with an anti-washout admixture compatible with the grout. The use of an anti-washout admixture, or special grouting procedures are subject to the review and approval of the Consultant.
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.3 Fill the drill hole with grout using a grout pipe or tremie, filling the drill hole from the bottom until clean, uncontaminated grout is observed flowing from the drill hole. .4 Install a pressure seal or suitable packer into the drill hole near surface and continue pumping grout at 35.0 kPa (5 psi) until the pressure can be maintained for five minutes. The packer or pressure seal shall be removed with the approval of the Consultant. .5 After a minimum of 24 hours, the drill hole shall be redrilled and water pressure tested to assure adequate sealing of the drill hole has been achieved. .6 Grout Mixing: Particular care shall be taken to ensure that: .1 The dry cement is free of lumps before mixing; .2 The mixing water is clean and free of injurious quantities of substances know to be harmful to Portland cement or pre-stressing steel such as chlorides, fluorides, sulphites, and nitrates. Mixing water shall be obtained from raw water source at the site and not from the chlorinated source located immediately downstream of the chlorination plant, unless otherwise approved or directed by the Consultant; .3 Additives are free of lumps; .4 All materials shall be carefully proportioned by weight according to submitted mix design, and added slowly in the following order: water, cement, and additive; and .5 The grout shall be continuously agitated even during grouting to prevent it from forming lumps and settling. Grout that has not been placed within 30 minutes after mixing shall be discarded. .7 Placing: Placement of the grout shall be in accordance with the following: .1 The quantity of grout placed in each hole shall be recorded. The Consultant shall be notified in advance when the grouting operation is to commence. When the air temperature is below 5°C, precautions shall be taken to ensure that the grout temperature does not fall below 10°C or that the grout becomes so stiff that it cannot be placed properly in the hole; .2 Grout pumping pressure at the top of the hole shall not exceed the prevailing reservoir pressure by more than 103 kPa, as determined by the Consultant; and .3 Adjacent anchor holes, drains, and piezometers shall be flushed during consolidation grouting as required by the Consultant. .8 Records: The following data concerning the grouting operations for each hole shall be recorded by the Contractor and submitted daily to the Consultant on an approved form: .1 Type of grouting; anchor or consolidation; .2 Water-cement ratio; .3 Types and proportions of additives; .4 Grout pressure, type and grouting connection; and .5 Quantity of grout in each stage of grouting.
3.6 INSTALLATION OF POST-TENSIONED ANCHORS .1 The anchor assembly shall be inserted carefully into the hole, using an off-coiler where feasible, to ensure that no damage occurs to the anchor, grout pipes, or accessories. The anchor shall be firmly fixed in position to prevent any movement during grouting. The
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anchor shall be securely supported from the collar of the hole to ensure that the bottom of the anchor and the bottom of the anchor end cap are completely encased in grout. The end cap shall not rest on the bottom of the hole. Care shall be taken by using anchor centralizers to ensure the anchor is centrally located in the hole.
3.7 PRIMARY GROUTING OF ANCHORS .1 Schedule: Anchors shall be grouted as soon as possible after installation. .2 Mixing: Particular care shall be taken to ensure that: .1 The dry cement is free of lumps before mixing. .2 The mixing water is clean and free of injurious quantities of substances known to be harmful to Portland cement or pre-stressing steel such as chlorides, fluorides, sulphites and nitrates. .3 Additives are free of lumps. .4 All materials shall be carefully proportioned by weight according to manufacturer’s recommendations, and added slowly in the following order: water, cement, and additive. .5 The grout shall be continuously agitated even during grouting to prevent it from forming lumps and settling. Grout that has not been placed within 30 minutes after mixing shall be discarded. .3 Placement: Placement of the grout shall be in accordance with the following: .1 Grout shall be placed continuously at a uniform rate. Placement of grout shall continue until the grout exiting at the top of the hole has the same consistency as that being injected into the hole. .2 Primary grout near the top of the hole that would interfere with the placement of the trumpet shall be extracted. .3 The quantity of grout placed in each hole shall be recorded. The Contractor shall notify the Consultant in advance when the grouting operation is to commence. When the air temperature is below 5°C, precautions shall be taken to ensure that the grout temperature does not fall below 10°C or become so stiff that it cannot be placed properly in the hole. .4 Grouted anchors shall remain undisturbed for a minimum of 2 days. .4 Records: The following data concerning the grouting operations for each hole shall be recorded by the Contractor and submitted daily to the Consultant on an approved form: .1 Type of grouting: anchor or consolidation; .2 Water-cement ratio; .3 Types and proportions of additives; .4 Grout pressure, type of grouting connection; and .5 Quantity of solid and liquid grout in each stage of grouting.
3.8 POST-TENSIONING AND TESTING OF ANCHORS .1 Schedule: Post-tensioning operations shall not begin prior to the anchor grout attaining a minimum unconfined compressive strength of 30 MPa based on field cured grout cubes.
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.2 Safety: anchors shall be stressed only by experienced personnel using hydraulic jacks. Safety precautions shall be taken during post-tensioning to minimize risk of injury to personnel. .3 Calibration: The hydraulic jacks complete with load cell and pressure gauge shall be calibrated allowing accurate reading and recording of the applied tension or pressure. The pressure gauges and load cell for the hydraulic jacks shall be calibrated immediately prior to being brought to the Site and shall be subject to periodic tests, as directed by the Consultant, for accuracy and operation satisfactory to the Consultant. A certified calibration curve shall be furnished for each jack gauge and load cell. .4 Stressing: The procedure for stressing and testing of anchors shall be as contained within. Any component of the anchoring system that has been damaged or has failed under test will be rejected and the Consultant will determine the disposition of the component. The Contractor shall remove the component from the Site if so directed by the Consultant. No work shall commence on replacing the rejected component without the written approval of the Consultant. The process of stressing shall be conducted so that the applied tension and the elongation of the anchor can be measured continuously and recorded. The Contractor shall keep the record for each anchor post-tensioned and shall show the elongation measurements at load increments specified herein. .5 Each anchor shall be tested by either a Performance Test or Proof Test as described below. .6 The maximum test load shall be in accordance with the Drawings and under no circumstance exceed 80% of the guaranteed ultimate tensile strength (GUTS) of the tendon. .7 Performance Test: .1 The first three anchors tested, selected at the discretion of the Consultant, shall be Performance Tested. A minimum of three anchors, and up to 10% of the anchors shall be selected at the discretion of the Consultant for Performance Testing. .2 Carry out the performance test by incrementally loading and unloading the anchor in accordance with the following schedule. At each increment record the movement of the tendon to the nearest 0.025 mm with respect to an independent fixed reference point. Monitor the jack load with a pressure gauge or load cell. P = design load for the anchor (as indicated on the design Drawings); AL = alignment load (5% GUTS). .3 Performance Test Schedule: .1 AL .2 0.25 P .3 AL .4 0.25 P .5 0.50 P .6 AL .7 0.25 P .8 0.50 P .9 0.75 P .10 AL
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.11 0.25 P .12 0.50 P .13 0.75 P .14 1.00 P .15 AL .16 0.25 P .17 0.50 P .18 0.75 P .19 1.00 P .20 1.20 P .21 AL .22 0.25 P .23 0.50 P .24 0.75 P .25 1.00 P .26 1.20 P .27 1.33 P (Test Load) .4 At each load increment, the total movement of the pulling head shall be recorded to the nearest 0.03 mm (0.001 in.) with respect to the independent fixed reference point. The load shall be held at each load increment just long enough to obtain the movement reading but no longer than 1 minute. Movement readings at Test Load shall be taken at 1, 2, 3, 4, 5, 6, and 10 minutes after reaching the Test Load. If the total creep movement between 1 and 10 minutes exceeds 1 mm (0.040 in.), the Test Load shall be maintained for an additional 50 minutes. Total movements shall then be recorded at 20, 30, 40, 50, and 60 minutes. .8 Proof Test: .1 Proof test all anchors that have not been performance tested. Perform the proof test by incrementally loading the anchor in accordance with the following schedule. At each increment, record the movement of the tendon to the nearest 0.025 mm with respect to an independent fixed reference point. Monitor the jack load with a pressure gauge or load cell as approved by the Consultant. P = Design load for the anchor as indicated on the Drawings. .2 Proof Test Schedule: .1 AL .2 0.25 P .3 0.50 P .4 0.75 P .5 P .6 1.20 P .7 1.33P (Test Load) .3 At each load increment, the total movement of the pulling head shall be recorded to the nearest 0.03 mm (0.001 in.) with respect to the independent fixed reference
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point. The load shall be held at each load increment just long enough to obtain the movement reading but no longer than 1 minute. Movement readings at Test Load shall be taken at 1, 2, 3, 4, 5, 6, and 10 minutes after reaching the Test Load. If the total creep movement between 1 and 10 minutes exceeds 1 mm (0.040 in.), the Test Load shall be maintained for an additional 50 minutes. Total movements shall then be recorded at 20, 30, 40, 50, and 60 minutes. .9 Compare proof test results with the performance test results. Any significant variation from the performance test results warrants making a performance test on the next anchor. .10 Acceptance Criteria: the Consultant shall investigate the anchor test results and determine whether the anchor is acceptable. An anchor shall be acceptable if all of the following are met: .1 The total elastic movement obtained from a performance test exceeds 80% of the theoretical elastic elongation of the stressing length and is less than the theoretical elastic elongation of the stressing length plus 50% of the bond length; .2 The creep amount shall not exceed 1.0 mm (0.040 in.) at Test Load during the period of 1 minute to 10 minutes. If this value is exceeded, then the total creep movement within the period of 6 to 60 minutes shall not exceed 2 mm. .11 After the anchor is accepted by the Consultant it shall be locked off as indicated on the design Drawings.
3.9 FINISHING WORK .1 The stressing tail shall be cut to its final length leaving at least a 0.5 in. (13mm) protrusion above the wedges or anchor nut. .2 The trumpet shall be filled completely with grout or corrosion inhibiting compound, as indicated on the drawings. All anchors shall remain unbonded in the free stressing length to allow for future lift-off readings and load adjustments. .3 The anchorage cover shall be placed over the anchor head and sealed against the bearing plate. Complete filling of the cover with grease is required.
3.10 PROTECTION FROM WEATHER AND ENVIRONMENTAL DAMAGE .1 Anchorage protection: Protect anchorages at all times to prevent contamination of mating surfaces and corrosion. Provide protection when anchorages are: .1 Exposed to weather. .2 Enclosed and subject to condensation. .3 Subject to any environmental hazard.
3.11 TRAINING .1 Provide PCA a copy of the product manual for the load cell, readout unit, and software. .2 Provide training to PCA staffs on using load cell readout unit to monitor the load cells, including but not limited to calibration, temperature correction, data transfer, and data management. .3 Schedule training with Departmental Representative.
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3.12 HEATING AND HOARDING REQUIREMENTS .1 A weatherproof, heated enclosure shall be constructed and maintained over each anchorage location during cold weather. Cold weather is considered as any period of forty-eight (48) hours or longer during which the air temperature is, or is expected to be at or below five degrees Celsius (5ºC). The provisions of this Section apply during Cold Weather. .2 The enclosure or hoarding shall be heated during grouting and concreting operations to maintain a floor air temperature of five degrees Celsius (5ºC). .3 All snow and ice shall be removed from within the anchorage hole and the enclosure prior to anchor construction activities. .4 During cold weather, the assembled rock anchor shall be stored in a space heated to 20 degrees Celsius for twenty four (24) hours prior to installation in the drill hole. The anchor shall be installed immediately into the drill hole to reduce the development of condensation of water on anchorage components. .5 Any combustion heaters used in the enclosure shall be arranged as to prevent combustion gases or heated air from being blown directly on any freshly placed grout or concrete. .6 Concrete and grout additives containing chloride products intended for cold weather placing shall not be used. .7 Hydration accelerators for concrete or grout shall be approved by the Consultant prior to use. .8 Fresh concrete and grout must be protected from freezing at all times. In the event of loss of heating, the Contractor shall provide sufficient insulating material or blankets to adequately protect the concrete or grout from freezing. Heating or insulation must be maintained for forty-eight (48) hours after placement unless otherwise directed by the Consultant. .9 Concrete and grout shall be maintained at or above temperature recommended by ACI 306R-88: Cold Weather Concreting. .10 Any water used for concrete, or grout shall be free of ice and maintained at a temperature above freezing or as otherwise directed. .11 All construction materials shall be protected from snow and ice, and shall be free of snow and ice prior to use.
END OF SECTION
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Part 1 General
1.1 DESCRIPTION .1 This section specifies the requirements of Cofferdam and Dewatering works for Drag Lake Dam rehabilitation. .2 During construction at the North Dam, the sluiceway at the South Dam will be used to divert water, and vice versa. .3 Construction of cofferdam is optional. This section applies only if the Contractor elects to construct cofferdam in lieu of using barges or other means. .4 The cofferdam must be designed for seasonal flows and winter conditions (if winter construction is expected). .5 Work includes but is not limited to: .1 The design, construction and maintenance of an upstream cofferdam system as required to facilitate the Work as described in Section 01 11 00 and as indicated on the Contract Drawings. .2 Design, provision and maintenance of a dewatering system for removal of water from the designated Work spaces and to maintain these areas in a dry state for the duration of the work, which meets Work and environmental regulation requirements. This shall include: .1 Methodology for removal of temporary works and for maintaining stability of new and existing Works during the re-watering of the worksite. .3 Implementation of dewatering works according to the Professional Engineer’s design. .4 Providing and maintaining all dewatering equipment for the duration of the Work. .5 Supply of standby equipment to replace dewatering equipment which malfunctions. .6 Removing temporary dewatering system at the end of the Work. .7 Restore shoreline and shoreland areas affected by the Work to original condition. .8 Complying with the provision of Section 01 35 43 – Environmental Procedures and Parks Canada EIA Best Management Practice for Project Site Dewatering with respect to turbidity and pollution control at all times.
1.2 RELATED REQUIREMENTS .1 Section 01 35 43 – Environmental Procedures .2 Parks Canada EIA Best Management Practice for Project Site Dewatering
1.3 REGULATORY REQUIREMENTS .1 Adhere to local, provincial and federal requirements relating to: .1 Protection of environment;
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.2 Safety of construction; and .3 Protection of workers. .2 The design, details for the construction and installation, and removal of cofferdams must be approved by PCA Environmental Assessment Officer. Include details for dewatering and diversion systems describing: methodology of construction, operation, monitoring, decommissioning schedule of work, the design of all works duly certified by a qualified professional engineer; environmental controls (sediment and erosion control, and protection of existing watercourse beyond the active work area; and for the fish capture and release as part of the dewatering; and such other information required by PCA and as identified in this Section. .3 PCA will assess the documentation provided in accordance with Section 35 of the Fisheries Act to determine if the work results in serious harm to fish habitat. Upon obtaining approval from PCA for the dewatering and diversion plans, implement the designed works. .1 If serious harm of fish habitat is determined due to the need for the construction of the dewatering work, the cost of the offsetting will be borne by PCA. .2 If serious harm of fish habitat is determined due to the extent, quality and/or schedule of the proposed works including the sediment and erosion control measures, or for the methodology of capture and release of fish within the working area, the Contractor shall modify their design and/or methodology to address the identified deficiencies and make a resubmission. .3 If serious harm is still determined after all identified deficiencies have been addressed, the cost of the offsetting will be borne by PCA. .4 Where a serious harm has been identified by PCA, the Contractor shall prepare an offsetting plan in consultation with PCA. The cost of the offsetting plan preparation shall be borne by PCA. Contractor shall obtain PCA’s written approval prior to execution of preparation of offsetting plan. There shall be no claims for delays for obtaining approval for the cofferdam and dewatering works.
1.4 ACTION AND INFORMATIONAL SUBMITTALS .1 Submittals in accordance with Section 01 33 00 - Submittal Procedures. .2 Submit shop drawings of all cofferdam(s) and dewatering systems, including seepage control, stability of structures and slopes within the work area. .1 Submit drawings stamped and signed by professional engineer registered or licensed in the Province of Ontario, Canada. .1 Shop drawings shall clearly demonstrate the materials to be employed and the methodology of installation, operation, maintenance, and removal. .2 Submit design criteria and calculations of (for each stage of construction): .1 Stability of cofferdam(s) and existing structures and slopes during dewatering; .2 Measures to control seepage, and surface drainage into the Work area.
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.3 Submit detail drawings as required to satisfy conditions for granting of permits by Regulatory Agency. .1 Modify detail drawings to meet Regulatory Agency requirements; .2 Revise details to address site conditions encountered during construction.
1.5 QUALIFICATIONS .1 Cofferdam and dewatering system to be designed by a Professional Engineer licensed to practice in the Province of Ontario with considerable experience and expertise in design of similar systems and structures. .2 Design Engineer shall: Make, check and sign all calculations; check, sign, and seal all drawings; inspect and verify conformance and safety of construction of dewatering structures and system on site; provide written notice to Departmental Representative stating that the temporary works have been constructed as per requirements and are ready for operation.
1.6 DESIGN CRITERIA .1 Design cofferdams to ensure maintenance of work spaces in a dry state for duration of work. .1 The Contract drawings show the location for the cofferdam(s) to undertake the Works. .2 Plan and design dewatering systems considering: .1 Safe access to cofferdam and access to any portion of the Work. .2 Provide measures to protect public from temporary works, including warning and advisory signage, and fencing. .3 Provide erosion control as required. .4 Sufficient and safe space required for crews to complete work in dewatered areas. .5 Sequence of Work. .6 Site constraints. .7 Environmental work restriction periods as stated in Section 01 35 43. .8 Minimize impact to adjacent cottages. .3 At all times, maintain environmental quality of water to Section 01 35 43. .4 Ensure that no phase of Work threatens safe performance of cofferdam. .5 Cofferdam shall be designed for 1 in 20 years storm event. Provide a minimum of 300mm freeboard above listed water levels and associated ice levels for winter work and ensure no overtopping for a 1 in 20 years storm event.
1.7 Water Levels and Flows .1 Refer to Section 01 14 00 – Work Restrictions. .2 It is the responsibility of the Contractor to fully familiarize itself with water levels and flow conditions in the lake and to anticipate impacts that may have on the Work.
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1.8 ENVIRONMENTAL REQUIREMENTS .1 Comply with the provision of Section 01 35 43 – Environmental Procedures and Parks Canada EIA Best Management Practice for Project Site Dewatering. .2 Dispose of water so it does not create a safety or health hazard; or cause damage to environment, to adjacent property or to any portion of Work, or cause erosion of channel banks. .3 Prior to dewatering the work area, remove any aquatic species (fish and turtles) according to approved environmental protection plan including fish capture and relocation condition as approved by PCA. Work to be supervised by a knowledgeable and competent fishery expert. .4 Turbidity limit: to Section 01 35 43. .5 During the installation of cofferdam, provide measures to mitigate sediment transport. .6 Do not release any silt or other materials into watercourse during construction and removal of cofferdam(s).
1.9 PROTECTION .1 Protect cofferdam and dewatered work spaces from damage due to flood, rain, ice, snow, or other adverse climatic conditions. .2 Carry out monitoring of earth embankments. .3 Train staff for safe operation of dewatering works. .4 Provide fencing to prevent public access onto the cofferdam and into the work area year round.
Part 2 Products
2.1 MATERIALS .1 Only use material in good condition, approved by Departmental Representative and suitable for their use in Work. .2 Do not use materials which may cause environmental damage to waterway or to land at or near site. This includes materials which would cause turbidity in excess of limits specified in Section 01 35 43. .3 Materials and methods proposed for use in dewatering of the site are to be approved by PCA. .4 Earth or granular materials with sand and fines is not acceptable for cofferdam. .5 If using sand bags for an interim measure, sand must be washed of fines before placing in the water. Bags are to be made of synthetic reinforced material suitable for the purpose intended. The Departmental Representative may request demonstration to confirm the filled bags can be installed and removed without any resulting turbidity. .6 Note that PCA prefer gravel/rockfill dams with rubber membrane, rubber dams, sand bags (using washed pea gravel), bulkbags, bolted pre-engineered frame type structures or other types of cofferdams which do not generate turbidity.
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Part 3 Execution
3.1 GENERAL .1 Evaluate, plan, and execute Work to the design criteria, in a professional and prudent manner giving due consideration to: .1 Climatic conditions which may occur at work location during period of construction in its entirety. .2 Safety of personnel and of general public including boating traffic. .3 Safety of Work and of adjacent property and structures. .4 Safety of removals. .5 Environmental requirements. .6 Clearance requirements for Work. .7 Irregularities of adjacent surfaces. .8 Changes in water levels. .9 Resolving site issues in a timely manner
3.2 CONSTRUCTION OF COFFERDAMS .1 Sufficiently watertight to permit Work to proceed in the dry. .2 Install temporary works of Cofferdam to not unduly compromise the existing structures and works. .3 Install temporary works including stability measures in a progressive manner without delays according to the approved schedule. .4 Operate temporary measures to minimize potential environmental damage, and in conformance with Section 01 35 43. .5 Turbidity within the curtain area shall not be above 8 NTU during dewatering.
3.3 DEWATERING .1 Dewater work spaces involved with the Work and maintain them in a fully dewatered state until Work is completed. .2 Continue dewatering operations to enable Work to proceed in the dry for the duration of Work. .3 Ensure all dewatering equipments are operated in compliance with Section 01 35 43 and in such a manner to avoid and contain spills. .4 Repeat entire dewatering procedures as often as may be necessary if flooding or other damage occurs before completion of Work. .5 Maintain the dewatered state by pumping from well-points and /or sumps. .6 Contractor shall be responsible for the performance and non-performance of the dewatering works. .7 Contractor shall be liable for any failure or the cofferdam(s), pumps, power supply, and associated works during the course of the Work and shall make good at no expense to
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PCA or the Consultant any delays or damage to the Works resulting from the failure of these systems to maintain the site in an adequately dewatered state.
3.4 WATCHKEEPER .1 Ensure continuity of dewatering by designating a Watchkeeper to make periodic checks both during the Work and at times when Work is not in progress. Watchkeeper’s qualifications under this Section are to be sufficient to perform on dewatering equipment, such duties as: .1 Preventive maintenance and refuelling of generators normally performed during any shift. .2 Emergency repairs of minor complexity. .3 Placing standby items in service.
3.5 EQUIPMENT .1 General: .1 Provide equipment in safe operating condition and maintain it in a safe operating condition for entire period of use and/or standby for use on Work. .2 Provide skilled operators for equipment. .3 Undertake service and maintenance of equipment according to approved environmental procedures. .2 Standards and performance: .1 Provide equipment of such quality and in such quantity as to provide sufficient capability to perform essential functions of Work to the approved schedule. .2 Equipment that is working in-water shall meet all environmental requirements. .3 Equipment shall be inspected and service regularly. Provide copies of equipment inspection and service records when requested by the Departmental Representative. .4 Provide emergency equipment for spills of deleterious substances. .5 Provide standby replacement for power supply, pumps and other essential dewatering equipment which may break down during Work. .6 Keep this replacement equipment available on site for immediate use.
3.6 REMOVALS OF COFFERDAMS .1 At approved stages in Work, remove all cofferdams, temporary improvements, and dewatering systems to original bottom level. .2 Remove all temporary measures. Restore the site to the original condition or better to the satisfaction of the Departmental Representative. .3 Dispose of all unwanted materials off-site as approved by the Departmental Representative. .4 Do not dispose any materials in creek or bay. .5 Undertake removals to the requirements of the regulatory permits and approvals, and to Section 01 35 43.
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.6 Turbidity curtain is to only be removed once cofferdam is removed.
END OF SECTION