Addendum 1 Page 1 - Near North District School Board€¦ · Flooring, Ceiling, Lighting, Fire...

Addendum 1

Flooring, Ceiling, Lighting, Fire Alarm & Septic Tank Replacement Project No. 217079 Magnetawan Central Public School Near North District School Board February 13, 2018

ADDENDUM NO. 1 Flooring, Ceiling, Lighting, Fire Alarm and Septic Tank Replacement Magnetawan Central Public School Magnetawan, Ontario The following Addendum shall be part of the Tendering Documents and shall supersede the drawings and/or Specifications and previously issued Addenda where applicable. This Addendum consists of 2 pages plus the listed attachments. Attachments: Revised Drawing A2.0 Section 02 81 00 Asbestos Abatement Requirements (1 page) Section 02 81 01 Asbestos Scope of Work (1 page) Section 02 82 00 Asbestos Assessment Report (1 page) Section 02 82 01 Type 1 Asbestos Abatement Requirements (7 pages) Section 02 82 02 Type 2 Asbestos Abatement Requirements (11 pages) Section 02 82 03 Type 3 Asbestos Abatement Requirements (11 pages) Mechanical / Electrical Addendum ME-01 (6 pages including attachments) 1. Section 00 21 12 Instructions to Bidders

.1 Replace 1.3.1. with the following:

“.1 Complete Tender Form, signed under seal, executed, and dated together submitted in sealed

envelopes, clearly marked "Flooring, Ceiling, Lighting Fire Alarm & Septic Tank Replacement – Magnetawan Central Public School" will be received until 14:00:00 local time February 27th, 2018 by the Purchasing Department of the Near North District School Board, 963 Airport Road, North Bay, Ontario, Include: “

.

2. Section 01 00 01 General Requirements .1 Replace 1.21.1. with the following:

“.1 Submit to the Consultant, 1 (one) paper copy and 1 (one) digital copy (submitted on portable thumb

drive) of operating and maintenance manuals and as-built drawings.” .3 Add the following new specification Sections, attached to this Addendum, to the Contract Documents: Section 02 81 00 Asbestos Abatement Requirements Section 02 81 01 Asbestos Scope of Work Section 02 82 00 Asbestos Assessment Report Section 02 82 01 Type 1 Asbestos Abatement Requirements Section 02 82 02 Type 2 Asbestos Abatement Requirements Section 02 82 03 Type 3 Asbestos Abatement Requirements

Addendum 1

Flooring, Ceiling, Lighting, Fire Alarm & Septic Tank Replacement Project No. 217079 Magnetawan Central Public School Near North District School Board February 13, 2018

4. Drawing A1.0 .1 Refer to Flooring Replacement Notes, add the following to the end of note 5:

“Complete abatement work in accordance with specification Section 02 82 01 Type 1 Asbestos Abatement and Section 02 82 02 Type 2 Asbestos Abatement.”

5. Drawing A2.0

.1 Replace originally issued drawing A2.0 with revised drawing attached with this addendum.

End of Addendum #1.

Piotrowski Consultants Ltd.

1820 Bond Street

North Bay, ON P1B 4V6

Telephone: (705) 472-2536

Fax: (705) 476-5105

Email: [email protected]

MAGNETAWAN CENTRAL PUBLIC SCHOOL

MAGNETAWAN, ONTARIO

FLOORING, CEILING, LIGHTING, FIRE ALARM & SEPTIC TANK REPLACEMENT

OUR PROJECT NUMBER: 6099

M/E ADDENDUM NO. 1 FEBRUARY 9, 2018

The following addendum shall be part and parcel of the tendering document and shall supersede the drawings and/or specifications where applicable. Upon receipt of same, staple it directly to the inside front cover of the specifications. 1. Re-support existing piping with new clevis hangers and rods (steel and copper type) in the corridor

area. 2. Re-insulate all piping within corridor ceiling space as per attached specification Section 15260 -

Thermal Insulation for Piping. Provide piping identification after insulation job completion. 3. Central corridor of the school will involve Type 3 asbestos abatement of piping insulation.

Contractor shall provide new supports for existing conduit using unistrut and threaded rod. All loose wiring to be bundled neatly and supported.

4. Corridor lighting fixture type has been revised as per sketch SK-18.01.31A _____________________________ Jerzy Bak, P.Eng.

Magnetewan Central Public School 15260 31 Sparks St., Magnetawan, ON THERMAL INSULATION FOR PIPING Flooring, Ceiling, Lighting, Fire Alarm & Septic Tank Replacement Project Number: 6099 Page 1 of 4


North Bay, Ontario February 2018

PART 1 - GENERAL

1.1. GENERAL

1. Division 1, General Requirements is part of this Section and shall apply as if repeated here.

1.2. REFERENCES

1. Do thermal insulation in accordance with ACNBC, ASTM E96-66(1972) and ASTM C411-61 (1975).

2. Fire hazard rating:

1. Meet NFPA 90A-2002, NFPA 225-1984 and CAN4-S102-M83 for all components of insulation system.

1.3. DEFINITIONS

1. “CONCEALED” - insulated mechanical services in chases, furred spaces, pipe shafts or hung ceilings.

2. “EXPOSED” - will mean “not concealed” as defined herein.

PART 2 - PRODUCTS

2.1. FORMED FIBROUS GLASS TO 200°C

1. Application: insulation system for piping, valves, heat exchangers, headers, fittings, etc. maximum temperature 200°C. On domestic hot water and recirculating piping, fittings and all hydronic heating hot water systems.

2. Materials:

1. CGSB 51-GP-9M, rigid mineral fibre sleeving for piping, including foilcraft laminate packet with open mesh fibre scrim reinforcing.

2. Acceptable materials: Knauff; Fibreglass Rigid-Wrap pipe insulation.

3. Thickness:

1. Domestic hot water and recirculating lines – located in conditioned spaces:

Line Size Nominal Thickness Nominal Up to NPS 1 1/4 25 mm (1")

NPS 1 1/2" and larger 40 mm (1 1/2") Run-outs to fixtures

For max. of 2.4 m (8') 25 mm (1")




2. Hydronic hot water and glycol heating media temperature up to 200°F/93°C:

Line Size Nominal Thickness Nominal

Run-outs Up to 3.7 m (12') 38 mm (1 1/2") NPS 3/4" to 1 1/4" 38 mm (1 1/2") NPS 1 1/2” to 8” 50 mm (2”)

2.2. FORMED FIBROUS GLASS WITH V.B. -14 TO 37°C

1. Application: insulation system for piping, valves, heat exchangers, headers, fittings, etc., for temperature range - 14 to 37°C. On domestic cold water, rain water leaders, above grade storm and condensate lines.

Media Temperature 41 to 56°F / 5 to 13°C Line Size Nominal Thickness Nominal Up to NPS 1 1/4” 13 mm (1/2") NPS 1 1/2 and over 25 mm (1")

2. Materials:

1. CGSB 51-GP-9M, rigid mineral fibre sleeving for piping, and CGBS 51-GP-52M vapour barrier jacket. Complete with factory applied foil laminate, reinforced with open mesh fibre scrim.

3. Thickness – Media temperature <41°F/<5°C:

Line Size Nominal Thickness Nominal Up to NPS 3/4” 13 mm (1/2") Up to NPS 1” - 6” 25 mm (1”) NPS 8” and larger 38 mm (1 ½")

2.3. FASTENINGS

1. Self-adhesive tape and 100% coverage lagging adhesives.

1. Self-adhesive tape rated under 25 for flame spread and under 50 for smoke development.

2. For vapour barrier:

1. Quick-setting adhesive for joints and lamps sealing of vapour barriers. Flame spread 10 smoke development 0.

2.4. JACKETS

1. Fire retardant PVC jackets.

1. Apply in exposed areas (classroom areas, storage rooms): compact, firm ULC listed,




fire rated.

2. On concealed valves and fittings use ULC listed, fire rated, plain weave cotton fabric at 120 g/m

2 (0.38 oz/Sq. Ft.)

PART 3 - EXECUTION

3.1. APPLICATION

1. Apply insulation after required tests have been completed and approved by Consultant. Insulation and surfaces shall be clean and dry when installed and during application of any finish. Apply insulation materials, accessories and finishes in accordance with manufacturer's recommendations and as specified herein.

2. On piping with insulation and vapour barrier, install high density calcium silicate black under hanger shield and metal saddle. Maintain integrity of vapour barrier over full length of pipe without interruption at sleeves, fittings and supports.

3.2. INSTALLATION

1. Install in accordance with ANSI/NFPA 90A and ANSI/NFPA 90B.

2. Perform insulation work using qualified insulation applicators, in accordance with latest trade application methods and to the Consultant’s approval.

3. Work to begin only when building is enclosed preventing insulation from getting wet due to elements such as rain, snow, construction, etc. All damaged or wet insulation to be replaced.

4. All piping (Section 15260) insulation to be continuous except at fire barriers.

5. Preformed: sectional up to NPS 12, sectional or curved segmented above NPS 12.

6. Multi-layered: staggered butt joint construction.

7. Vertical pipe over NPS 3: insulation supports welded or bolted to pipe directly above lowest pipe fitting. Thereafter, locate on 3 m, 15' centres.

8. Expansion joints in insulation: terminate single layer and each layer of multiple layers in straight cut at intervals recommended by manufacturer. Leave void of 25 mm, 1" between terminations. Pack void lightly with flexible mineral insulation.

9. Seal and finish exposed ends and other terminations with insulating cement.

10. Expansion joints in piping: provide for adequate movement of expansion joint without damage to insulation or finishes.

11. Orifice plate mounting flanges, flanges and unions at equipment, expansion joints, valves, other components requiring regular maintenance.

12. Insulation is not required for:




1. Chrome plated piping, valves and fittings.

3.3. FASTENINGS

1. Secure pipe insulation by tape at each end and centre of each section, but not greater than 1 m (36") on centres.

END OF SECTION 15260

THOMAS CONTRACTING 02 81 00 North Bay, Ontario ASBESTOS ABATEMENT REQUIREMENTS Page 1 of 1

Flooring, Ceiling, Lighting & Fire Alarm System Replacement Project No. TC - 201402 Magnetawan Public School Near North District School Board February 2018

PART 1 GENERAL

1.1 ASBESTOS CONSULTANT

The asbestos consultant for this project is Thomas Contracting. Any questions relating to the asbestos specifications, inspections or procedures shall be directed to:

Mr. Grant Johnson THOMAS CONTRACTING Telephone: (705) 499-8006 72 Ninovan Road Fax: (705) 752-2536 Callander, Ontario Email: [email protected] P0H 1H0

1.2 AIR MONITORING

From commencement of work until completion of cleaning operations air samples may be taken periodically by the asbestos consultant both inside and outside of the work area enclosures. Clearance levels for this project have been set at or less than 0.01 f/cc.

1.3 FAILED ABATEMENT INSPECTIONS

All return visits conducted by the asbestos consultant to perform follow-up air / inspections due to abatement contractor failing to meet project requirements in the original scheduled inspection will represent grounds by the Owner for application of a penalty (deduction) of up to $ 700.00 plus taxes (for each occurrence) to the original contract price.

1.4 LIABILITY INSURANCE

The asbestos abatement contractor is required to maintain no less than five million dollars ($5 million) of General Liability Insurance and no less than five million dollars ($5 million) of Asbestos Liability Insurance for this project. The Near North District School Board will be required to be named as “Additional Insured” on both policies. This is mandatory in order to bid for this work.

1.5 ABATEMENT ENCLOSURES / WORK AREAS

The asbestos abatement contractor is at all times responsible for the security and safety of their abatement enclosures and work areas. The asbestos abatement contractor is required to post contact names and phone numbers (in plain view) of company personal (approved to enter a Type 3 enclosure) on the entrance to the decontamination facility for the purpose of "after-hours" emergency entrance in to the enclosures / work areas. All walls on the decontamination and load-out facilities that are in direct contact to non-abatement workers requires a ½” plywood protective barrier be securely installed including lockable entrance / exit wood doors.

1.6 ASBESTOS WASTE BINS / VEHICLE

The asbestos abatement contractor is at all times responsible for the security and safety of their asbestos waste bins / vehicle(s). Only fully enclosed asbestos waste bins or vehicle(s) will be approved for this project and must be locked at all times when not directly supervised by personal from the abatement company. The asbestos consultant must approve all waste bins / vehicle(s) prior to use.

END OF SECTION 02 81 00

THOMAS CONTRACTING 02 81 01 North Bay, Ontario ASBESTOS SCOPE OF WORK Page 1 of 2


PART 1 GENERAL

1.1 SCOPE OF WORK

.1 Comply with the requirements of this section when performing the following required

asbestos abatement work under this contract. .1 The removal of all asbestos-containing pipe insulation located on both the existing

hot water heating pipes and domestic water pipes within Corridor A of the school. See Drawing # 1 (below) for corridor / area locations.

All work is to be performed under a Type 3 operation as stated within Section 02 82 03 of the project specifications and in accordance with Ontario Regulations 278/05.

.2 The removal of all existing non-friable asbestos-containing vinyl floor tiles located

within Classroom # 2 and the Janitors Room of the school. See Drawing # 1 (below) for room / area locations.

Work is to be performed under a Type 1 or Type 2 operation as stated within Section 02 82 01 and/or Section 02 82 02 of the project specifications and in accordance with Ontario Regulations 278/05.

.3 In some cases, the abatement contractor and / or the general contractor will be

responsible to coordinate the removal and storage of mobile items (ie. desks, chairs, tables...etc...) from within the work area(s) prior to abatement set-up work. The abatement contractor and / or the general contractor will be responsible to coordinate the reestablishment of all moved/stored items to existing locations.

THOMAS CONTRACTING 02 81 01 North Bay, Ontario ASBESTOS SCOPE OF WORK

Page 2 of 2



THOMAS CONTRACTING 02 82 00 North Bay, Ontario ASBESTOS ASSESSMENT REPORT Page 1 of 1


PART 1 GENERAL

1.1 ASBESTOS IDENTIFICATION, REMOVAL & DISPOSAL

.1 Investigations relating to the asbestos-containing materials covered under this project have been carried out by EHS Group, under their Survey & Assessment Report titled NNDSB Asbestos Data Base – Magnetawan Public School. Full asbestos survey report has been included in the project documents and will also be located at the school for viewing.

.2 The Survey & Assessment Report is hereby offered to the bidder in good faith for general information and guidance. The Consultant assumes no responsibility or liability for the completeness and accuracy of this report.

.3 The Contractor shall make their own interpretation of the factual results and carry out any asbestos removal, disposal and related work as identified in the Survey & Assessment Report, and further work as deemed necessary to perform the Scope of Work.

.4 Contractor shall not be entitled to extra payment and / or performance time conditions, which are reasonably inferable from this report.

.5 Should there be a discrepancy between recommendations contained in the report and the requirements of the Contract Documents, the latter shall govern. Advise the Consultant in writing prior to proceeding with the Work.


THOMAS CONTRACTING 02 82 01 North Bay, Ontario TYPE 1 ASBESTOS ABATEMENT Page 1 of 7


PART 1 GENERAL

1.1 OUTLINE OF WORK

1. Comply with the requirements of this Section when performing all Type 1 asbestos abatement operations as noted in the project specifications under Section 02 81 01 – “Asbestos Scope of Work”.

1.2 DEFINITIONS

.1 ACM: Asbestos-containing materials

.2 HEPA Vacuum: High Efficiency Particulate Air filtered vacuum equipment with a filter system capable of collecting and retaining fibres greater than 0.3 microns in diameter at 99.97% efficiency.

.3 Amended Water: Water with a non-ionic surfactant wetting agent added to reduce water tension to allow wetting of fibres.

.4 Authorized Visitors: the Consultant or his representative, and persons representing regulatory agencies.

.5 Work Areas: Areas where removal of ACM takes place. .6 Critical Barriers: polyethylene used to cover openings such as registers and diffusers,

heating units, radiators, windows, doors etc.

.7 Polyethylene sheeting sealed with tape: polyethylene sheeting of type and thickness specified sealed with tape along all edges, around penetrating objects, over cuts and tears and elsewhere as required to provide a continuous polyethylene membrane to protect underlying surfaces from water damage or damage by sealants, and to prevent escape of asbestos fibres through the sheeting into a clean area.

1.3 REGULATORY AGENCIES

.1 Comply with Federal, Provincial, and local requirements pertaining to asbestos provided that in any case of conflict among these requirements or with these specifications the more stringent requirement shall apply.

1.4 SUBMITTALS Before commencing asbestos work, submit to the Consultant the following:

.1 Copies of all necessary permits for transporting and disposal of asbestos waste. Ensure that dump operator is fully aware of nature of material being dumped, and proper methods of disposal. Submit proof satisfactory to Consultant that suitable arrangements have been made to receive and properly dispose of asbestos waste.

.2 Proof satisfactory to Consultant that all employees have had instruction on the hazards of

asbestos exposure, respirator use, dress, entry and exit from work areas, and all aspects of work procedures and protective measures. The Contractor's Supervisor shall have attended an asbestos abatement course, of not less than two days duration, approved by the Consultant. Submit proof of attendance in the form of a certificate (to be submitted with Tender).



.3 Documentation, including test results and MSDS sheets, for sealer and other materials proposed for use.

.4 Copy of the written respirator procedures (use, cleaning and maintenance).

1.5 EXISTING CONDITIONS

.1 Lab testing results of ACM taken from surfaces within the scope of work and work area(s) of this project is presented in Section 02 82 00. These are for general information only and are not necessarily representative of all ACM contained within the scope of this project or the work area(s).

.2 Notify the Consultant of friable ACM discovered during the work and not apparent from

the drawings, specifications or report, pertaining to the work. Do not disturb such material pending instructions from the Consultant.

1.6 INSTRUCTION & TRAINING

.1 Before commencing the work provide to the Consultant satisfactory proof that every worker has had instruction and training in the hazards of asbestos exposure, in personal hygiene and work practices, and in the use, cleaning and disposal of respirators and protective clothing. A qualified supervisor, who has completed an approved asbestos abatement course of at least two (2) day duration, must be on site and inside the enclosure during all work periods. The name(s) of the supervisor(s) assigned to the job and proof of training must be submitted to the Consultant.

.2 Instruction and training related to respirators shall include instruction and training related

to: .1 The limitations of the equipment. .2 The inspection and maintenance of the equipment. .3 The fitting of the equipment. .4 The disinfecting of the equipment.

1.7 WORKER PROTECTION

.1 Respirators: provide workers with personally-issued and marked respiratory equipment acceptable to Ontario Ministry of Labour as suitable for the asbestos exposure in the work area. If disposable-type filters are used, provide sufficient filters so that workers can install new filters following disposal of used filters and before re-entering contaminated areas.

.2 Protective Clothing: Provide workers with full body disposable-type coveralls that do not

readily retain or permit penetration of asbestos fibres, and consists of full-body covering including head covering with snug-fitting cuffs at wrists, ankles and neck. Every worker who enters the work area shall wear protective clothing.

.3 Eating, drinking, chewing and smoking are not permitted in the work area.



.4 Each worker shall:

.1 Put on respirator with new filters or reusable filters that have been tested as satisfactory, clean coveralls and head covers before entering the abatement work area. If reusable protective clothing is used, each worker shall don respirator only before entering the abatement work area where clothing is stored. All street clothes, uncontaminated footwear, towels and similar uncontaminated articles shall be stored in clean area outside the abatement work area.

.2 Remove gross contamination from clothing before leaving work area by HEPA

vacuuming, then place contaminated work suits in receptacles for disposal with other asbestos-contaminated materials. Leave reusable items, except respirator, in the abatement work area. Clean outside of respirator with soap and water supplied at the exit of the work area. Upon completion of asbestos abatement, dispose of footwear as contaminated waste or clean thoroughly inside and out using soap and water before removing from work area.

.3 Following cleaning of respirator, tape over filter openings immediately after exiting

the work area. If re-entering work area, follow procedures outlined in 1.7.4.1 above.

.4 Provide and post at the entrance to the abatement work area the procedures

described in 1.7 of this section.

1.8 VISITOR PROTECTION

.1 Provide protective clothing and approved respirators to authorized visitors to the work areas.

.2 Instruct authorized visitors in the use of protective clothing, respirators and procedures.

.3 Instruct authorized visitors in the proper procedures to be followed in entering into and

exiting from the work area(s).



PART 2 PRODUCTS

2.1 MATERIALS

.1 Drop & Enclosure Sheets:

.1 Polyethylene: 0.15 mm (6 mil) thick. .2 Rip-proof polyethylene: Orange thick woven fabric bonded both sides with

polyethylene.

.2 Wetting Agent: 50% polyoxyethylene ester and 50% polyoxyethylene ether mixed with water in a concentration to provide thorough wetting of ACM.

.3 Waste Containers: As required by Ontario Regulation 309, asbestos waste shall be

contained in a rigid, impermeable, sealable container of sufficient strength to accommodate the weight and nature of the waste. Where the container is a cardboard box, the waste must be sealed in a six-mil (0.15 mm) polyethylene bag before being placed within the box. All waste containers shall have a printed cautionary asbestos warning, clearly visible when ready for removal to the disposal site. The warning must be in large, easily legible letters that contrast in colour with the background, and consist of the word "CAUTION" in letters not less than 10 cm in height and the words:

CONTAINS ASBESTOS FIBRES Avoid Creating Dust and Spillage

Asbestos May be Harmful to Your Health Wear Approved Protective Equipment

Note that the above warning message must also be displayed on both sides of every vehicle used for the transportation of asbestos waste.

.4 Tape: Tape suitable for sealing polyethylene to surfaces under both wet conditions using

amended water, and dry conditions. .5 Slow Drying Sealer: Non-staining, clean, water dispersible type that remains tacky on

surface for at least 8 hours and designed for the purpose of trapping residual asbestos fibres. Sealer shall have flame spread and smoke developed rating less than 50 (and be compatible with new fireproofing).

.6 HEPA Vacuum (refer to definition).



PART 3 EXECUTION

3.1 PREPARATION

.1 Work Areas:

.1 Shut off air handling and ventilation systems to prevent contamination and fibre dispersal to other areas of the building during work phase.

.2 Clean proposed work areas using, where practicable, HEPA vacuum cleaning

equipment. If not practicable, use a wet cleaning method. Do not use methods that raise dust, such as dry sweeping or vacuuming using other than HEPA vacuum equipment.

.3 At each access to work areas install warning signs in upper case letters reading as

follows: "CAUTION ASBESTOS HAZARD AREA (24 mm) NO UNAUTHORIZED ENTRY (19 mm) WEAR ASSIGNED PROTECTIVE EQUIPMENT (19 mm) BREATHING ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM (7 mm)".

.4 Tape in place polyethylene drop sheets ensure drop sheets extend a minimum of 1

metre beyond the localized work area. .5 Drop sheets shall not to be reused. .6 Facilities for washing hands and face shall be made available and used by all

workers when leaving the work area. .7 Maintain emergency and fire exits from work areas or establish alternative exits

satisfactory to Fire Commissioner of Canada and Provincial Fire Marshall. .8 Where application of water is required for wetting ACM, shut off electrical power,

provide 24 volt safety lighting and ground fault interrupter circuits on power source for electrical tools, in accordance with CSA Standard. Ensure safe installation of electrical lines and equipment.

.2 Separation of Work Areas from Occupied Areas:

.1 Separate parts of the building required to remain in use from parts of the building

used for asbestos abatement by as per Section 02 81 00.

.3 Asbestos Abatement work shall not commence until: .1 Arrangements have been made for disposal of waste. .2 Work areas and parts of the building required to remain in use are effectively

segregated. .3 Tools, equipment and material and waste containers are on hand. .4 Warning signs specified in 3.1.1.5 are displayed where access to contamination

areas is possible. .5 All notifications have been completed and other preparatory steps have been

taken.



3.2 Asbestos Removal / Disturbance

.1 Before removing / disturbing asbestos

.1 Prepare site. .2 Spray asbestos-containing material with water containing the specified wetting

agent, using airless spray equipment capable of providing a "mist" application to prevent release of fibres. Saturate the asbestos material sufficient to wet it to the substrate without causing excess dripping. Spray the asbestos material repeatedly during work process to maintain saturation and to minimize asbestos fibre dispersion.

.2 Remove using non-powered hand-held tools the wetted asbestos-containing material in

small sections. Do not allow asbestos-containing material or debris to dry out. If it is being removed, pack the material in sealable plastic bags, 0.15 mm thick, with pre-printed asbestos warning labels. Double-bag to ensure integrity. If asbestos waste contains hard or sharp objects capable of puncturing the bags, bags must be immediately placed in rigid, watertight containers, appropriately labelled. No asbestos-containing material or drop sheets are to remain lying on the floor at the end of the work shift.

.4 After completion of the asbestos disturbance work, all surfaces from which asbestos has

been removed / disturbed / drilled or cut shall be nylon brushed and wet-sponged to remove all visible material / debris. During this work the surfaces shall be kept wet.

.5 Place polyethylene seals, tape, cleaning material, clothing, and other contaminated waste

in plastic bags and subsequently into sealed, labelled, rigid waste containers for transport (double plastic bags alone are not acceptable unless hauler is specifically licensed to transport asbestos waste in bulk).

.6 Frequently and at regular intervals during the doing of the work and immediately on

completion of the work,

.1 Dust, debris and waste shall be cleaned up and removed using a vacuum equipped with a HEPA filter, or by damp mopping or wet sweeping, and placed in a container as described in section 2.1.3, and

.2 Drop sheets shall be wetted and placed in a container as described in section

2.1.3, as soon as practicable after subparagraph .1 has been complied with. .3 Seal filled bags by "goose-necking" top and taping. Clean external surfaces of

bags/containers thoroughly by wet sponging.

.7 Where the Consultant decides complete removal of ACM is impossible due to obstructions such as structural members or major service elements, seal/encapsulate the material to the satisfaction of the owner.

.8 Barriers and portable enclosures shall not be reused unless they are rigid and can be

cleaned thoroughly. .9 Compressed air shall not be used to clean up and remove dust from any surface. .10 Eating, drinking, chewing or smoking shall not be permitted in the work area.



3.3 Air Monitoring .1 From commencement of work until completion of cleaning operations, air samples may

be taken periodically by Consultant both inside and outside of work areas. .2 If air monitoring shows that fibre concentrations outside of the work area have increased,

as compared to the background air samples, the Consultant may direct the Contractor to use more stringent procedures.

.3 Results of air monitoring inside the work areas will be used to verify that the proper type

of respirators is being worn. .4 Final clearance air samples may be collected upon completion of the asbestos

disturbance work. Results are to be available within four hours to minimize costly delays. If the results indicate airborne fibre levels of less than 0.01 f/ml the work area(s) will be cleared for re-occupation.

3.4 Re-establishment of Objects and Systems .1 When clean-up is complete:

.1 Re-establish objects moved to temporary locations in the course of work, in their proper positions.

.2 Re-establish mechanical and electrical systems in proper working order. If required, install new filters (supplied by Owner).

.3 Repair or replace objects damaged in the course of the work, as directed by the

Consultant.

3.5 Inspections by Consultant .1 The Contractor must inform the Consultant at the following stages of the asbestos

disturbance work before carrying out additional work in the specific area: .1 Work Area Pre-Inspection: subsequent to completion of asbestos work area

preparation and prior to disturbing any ACM’s. .2 Work Area Post Inspection: subsequent to the final clean-up. END OF SECTION 02 82 01



PART 1 GENERAL

1.1 OUTLINE OF WORK .1 Comply with the requirements of this Section when performing all Type 2 asbestos

abatement operations as noted in the project specifications under Section 02 81 01 – “Asbestos Scope of Work”.

1.2 WORK REQUIREMENTS

.1 In addition to the noted project specifications and Ontario Regulations 278/05 the

following requirements will also be enforced under Type 2 operations on this project:

.1 Negative Air Handling Units (NAHU’s) or HEPA equipped vacuums for small areas must be incorporated and used in all Type 2 enclosure.

.2 Proof of acceptable DOP testing results (within the last month) of Negative Air

Handling Units (NAHU’s) are mandatory and must include clearly visible / readable and signed labels from the testing company affixed to each unit if exhausting within the building or to highly accessible area(s) outside the school.

.3 At least one additional NAHU must be on-site and ready to be used as a back-up

while abatement work is being conducted. .4 All movement of asbestos waste from the work area must not be conducted

between the hours of 6:00 am to 6:00 pm if accessing through public areas of the school (not including weekends / holidays / summer break).

.5 Critical barriers used to seal all openings leading out of the work area(s) must

consist of blue polyethylene woven (rip-proof) material.

1.3 DEFINITIONS

.1 ACM: Asbestos-containing materials

.2 HEPA Vacuum: High Efficiency Particulate Air filtered vacuum equipment with a filter system capable of collecting and retaining fibres greater than 0.3 microns in diameter at 99.97% efficiency.

.3 Amended Water: Water with a non-ionic surfactant wetting agent added to reduce water tension to allow wetting of fibres.

.4 Authorized Visitor: the Consultant or his representative, and persons representing regulatory agencies.

.5 Work Areas: Areas where removal of ACM takes place.

.6 Critical Barriers: 6 mil polyethylene used to cover openings such as registers and diffusers, heating units, radiators, windows, doors etc.

.7 Polyethylene sheeting sealed with tape: 6 mil polyethylene sheeting of type and

thickness specified sealed with tape along all edges, around penetrating objects, over cuts and tears and elsewhere as required to provide a continuous polyethylene membrane to protect underlying surfaces from water damage or damage by sealants, and to prevent escape of asbestos fibres through the sheeting into a clean area.



.8 Negative Pressure: a system which extracts air directly from work area, filters such extracted air through a High Efficiency Particulate Aerosol filtering system, and discharges this air directly from the work area to exterior of building. This system shall maintain a minimum Pressure differential of 5 Pa. (0.02 in. of water) relative to adjacent areas outside of work area, be equipped with an alarm to warn of system breakdown.

.9 Airlock: a system for permitting ingress or egress without permitting air movement

between a contaminated area and an uncontaminated area. Doorways shall be at least 2 m apart.

.10 Curtained Doorway: an arrangement of closures to allow ingress and egress from one

room to another while permitting minimal air movement between rooms, typically constructed by placing two overlapping sheets of polyethylene over an existing or temporarily framed doorway, securing each long the top of the doorway, securing the vertical edge of one sheet along one vertical edge of the doorway and the other sheet along the opposite vertical side of the doorway. All free edges of polyethylene shall be reinforced with duct tape and the bottom edge shall be weighted to ensure proper closing. Each polyethylene sheet shall overlap openings not less than 1.5 m on each side.

.11 Sign In/Out Forms: an inventory of the names of the workers and the times that they

have entered/exited the enclosure.



1.5 SUBMITTALS

Before commencing asbestos work, submit to the Consultant the following:




.3 Documentation, including test results and MSDS sheets, for sealer and other materials

proposed for use. .4 Copy of the written respirator procedures (use, cleaning and maintenance). .5 Layout of proposed enclosures, decontamination facilities (Clean Room and Equipment

and Access Room) and locations of negative air units, for review.




.1 Lab testing results of ACM taken from surfaces within the scope of work and work area(s) of this project are attached in Section 02 82 00. These are for general information only and are not necessarily representative of all ACM contained within the scope of this project or the work area(s).





.2 Instruction and training related to respirators shall include instruction and training related

to: .1 The limitations of the equipment. .2 The inspection and maintenance of the equipment. .3 The fitting of the equipment. .4 The disinfecting of the equipment.



.2 Protective Clothing: Provide workers with full body disposable-type coveralls that do not

readily retain or permit penetration of asbestos fibres, and consists of full-body covering including head covering with snug-fitting cuffs at wrists, ankles and neck. Every worker who enters the work area shall wear protective clothing.

.3 Eating, drinking, chewing and smoking are not permitted in the work area. .4 Each worker shall:

.1 Sign in on the Sign In/Out Forms, which are to be, located either inside the Clean Room or outside of the enclosure. Remove street clothes in clean change room and put on respirator with new filters or reusable filters that have been tested as satisfactory, clean coveralls and head covers before entering Equipment and Access Room or work area. If reusable protective clothing is used, each worker shall don respirator only before entering Equipment and Access Rooms where clothing is stored. All street clothes, uncontaminated footwear, towels and similar uncontaminated articles shall be stored in clean change room.



.2 Remove gross contamination from clothing before leaving work area by HEPA

vacuuming, then proceed to Equipment and Access Room and remove all clothing except respirators. Place contaminated work suits in receptacles for disposal with other asbestos-contaminated materials. Leave reusable items, except respirator, in Equipment and Access Room. Clean outside of respirator with soap and water supplied within the Equipment and Access Room; When not in use in the work area, store work footwear in Equipment and Access Room. Upon completion of asbestos abatement, dispose of footwear as contaminated waste or clean thoroughly inside and out using soap and water before removing from work area or from Equipment and Access Room.

.3 Following cleaning of respirator, tape over filter openings prior to entering clean

room, proceed to clean change room, remove and wash and rinse the inside of the respirator and dress in street clothes at the end of each day's work, or in clean coveralls before eating, smoking or drinking. Sign out after each shift. If re-entering work area, follow procedures outlined in 1.7.4.1 above.

.4 Enter the unloading room from outside dressed in clean coveralls to remove waste

containers and equipment from the Holding Room of the Container and Equipment Decontamination Enclosure system. No worker shall use this system as a means to leave or enter the work area.

.5 Workers shall be full protected with respirators and protective clothing during

preparation of system of enclosures prior to commencing actual asbestos abatement.

.6 Provide and post in Clean Change Room and in Equipment and Access room the

procedures described in 1.7 of this section.








PART 2 PRODUCTS

2.1 MATERIALS


.1 Polyethylene: 0.15 mm (6 mil) thick. .2 Rip-proof polyethylene: Orange thick woven fabric bonded both sides with

polyethylene.

.2 Wetting Agent: 50% polyoxyethylene ester and 50% polyoxyethylene ether mixed with water in a concentration to provide thorough wetting of ACM.

.3 Waste Containers: As required by Ontario Regulation 309, asbestos waste shall be

contained in a rigid, impermeable, sealable container of sufficient strength to accommodate the weight and nature of the waste. Where the container is a cardboard box, the waste must be sealed in a 6 mil (0.15 mm) polyethylene bag before being placed within the box. All waste containers shall have a printed cautionary asbestos warning, clearly visible when ready for removal to the disposal site. The warning must be in large, easily legible letters that contrast in colour with the background, and consist of the word "CAUTION" in letters not less than 10 cm in height and the words:

CONTAINS ASBESTOS FIBRES Avoid Creating Dust and Spillage Asbestos May be Harmful to Your Health Wear Approved Protective Equipment





.6 Encapsulant: Foster Bridging Encapsulant 32–32, Childers CHIL-BRIDGE CP-211

Bridging Encapsulant or other equivalent encapsulant product approved by the Consultant.




PART 3 EXECUTION

3.1 PREPARATION

.1 Work Areas:

.1 Shut off air handling and ventilation systems to prevent contamination and fibre dispersal to other areas of the building during work phase.

.2 Critical Barriers: seal off all openings such as ducts, grilles and diffusers, with

polyethylene sheeting sealed with tape.

.3 Pre-clean moveable objects (and carpeting) within proposed work areas using HEPA vacuum and cover with polyethylene sheeting sealed with tape.

.4 Pre-clean fixed casework, plant and equipment within proposed work areas using

HEPA vacuum and cover with polyethylene sheeting sealed with tape. .5 Clean proposed work areas using, where practicable, HEPA vacuum cleaning


.6 Establish negative pressure system and operate continuously from the time the first

polyethylene is installed to seal openings until final completion of the work including final clean-up. Sufficient negative air units must be provided to maintain a minimum of four (4) air changes per hour within the work area (calculated at 75% efficiency of the units). Prior agreement from the Consultant is to be obtained for placement of the units. Exhaust ducting must be semi-rigid (i.e., wire-reinforced polyethylene).

.7 Seal off (critical barriers) the remainder of the openings such as corridors,

doorways, windows, skylights, etc., with polyethylene sheeting (6 mil) sealed with tape.

.8 Cover floor and wall surfaces with polyethylene sheeting sealed with tape. Use 1

layer of orange rip-proof to cover walls and 2 layers of orange rip-proof polyethylene to cover floor. Cover floors first so that polyethylene extends at least 300 mm up walls then cover walls to overlap floor sheeting.

.9 Build airlocks at all entrances to and exist from work areas so that work areas are

always closed off by one curtained doorway when workers enter or exit. .10 At each access to work areas install warning signs in upper case letters reading as

follows: "CAUTION ASBESTOS HAZARD AREA (24 mm) NO UNAUTHORIZED ENTRY (19 mm) WEAR ASSIGNED PROTECTIVE EQUIPMENT (19 mm) BREATHING ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM (7 mm)".

.11 After work area isolation, remove heating, ventilating, and air conditioning filters,

pack in sealed plastic bags 0.15 mm minimum thick and treat as contaminated asbestos waste. Remove ceiling-mounted objects such as lights, partitions, other fixtures not previously sealed off, and other objects that interfere with asbestos removal, as directed by Consultant. (Note -upon completion of removal, replacement of such objects and re-wiring shall be the responsibility of the Contractor, provided they are performing the re-instatement). Use localized water spraying during fixture removal to reduce fibre dispersal.



.12 Maintain emergency and fire exits from work areas or establish alternative exits satisfactory to Fire Commissioner of Canada and Provincial Fire Marshall.

.13 Where application of water is required for wetting ACM, shut off electrical power,


.2 Worker Decontamination Enclosure System:

Worker Decontamination Enclosure System shall consist of an Equipment / Access Room and a Clean Room, as follows:

.1 Equipment and Access Room: build an Equipment and Access Room between

Clean Room and work areas, with two curtained doorways, one to the Clean Room and one to work area using orange rip-proof polyethylene (2 layers on floor). Install waste receptor and storage facilities for workers' shoes and any protective clothing to be reused in work areas. The Equipment and Access Room shall be large enough to accommodate specified facilities, any other equipment needed and at least one worker allowing him sufficient space to undress comfortably.

.2 Clean Room: build a Clean Room between the Equipment and Access Room and

clean areas outside of the enclosure, with two curtained doorways, one to outside of enclosures and one to Equipment and Access Room using orange rip-proof polyethylene (2 layers on floor). Provide lockers or hangers for workers street clothes and personal belongings. Provide storage for clean protective clothing and respiratory equipment. Install a mirror to permit workers to fit respiratory equipment properly, and sufficient hangers and hooks.

.3 Container and Equipment Decontamination Enclosure System:

Container and Equipment Decontamination Enclosure System shall comprise of a Staging Area within the work area, a Wash Area, a Holding Room and an Unloading Room. The purpose of this system is to provide a means to decontaminate scaffolding, waste and material containers vacuum and spray equipment, and other tools and equipment for which the Worker Decontamination Enclosure System is not suitable.

.1 Staging Area: designate a Staging Area in the work area for gross removal of dust and debris from waste containers and equipment, labelling and sealing of waste containers, and temporary storage pending removal to Wash Area. Staging Area shall have a curtained doorway to the Wash Area.

.2 Wash Area: build a Wash Area between the Staging Area and Holding Room with

two curtained doorways, one to the Staging Area and one to the Holding Room using orange rip-proof polyethylene (2 layers on floor). Provide high-pressure low volume sprays for washing of waste containers and equipment. Provide piping and connect to water sources and drains.

.3 Holding Room: build a Holding Room between the Wash Area and Unloading

Room, with two curtained doorways, one to the Wash Area and one to the Unloading Room using orange rip-proof polyethylene. The Holding Room shall be of sufficient size to accommodate at least two waste containers and the largest item of equipment used.

.4 Unloading Room: build an Unloading Room between the Holding Room and

outside, with two curtained doorways, one to the Holding Room and one to outside using orange rip-proof polyethylene.



.4 Construction of Decontamination Enclosures: .1 Build suitable framing for enclosures and line with orange rip-proof polyethylene

sheeting sealed with tape. Use two layer of orange rip-proof polyethylene on floors.

.2 Build curtained doorways between enclosures so that when people move through

or when waste containers and equipment are moved through a doorway, one of the two closures comprising the doorway always remains closed.


.1 Separate parts of the building required to remain in use from parts of the building

used for asbestos abatement by means of an airtight barrier system constructed as follows:

.1 Build suitable floor to ceiling lumber or metal stud framing, cover with orange

rip-proof polyethylene sheeting sealed with tape, and apply 9 mm minimum thick plywood. Seal all joints between plywood sheets and between plywood and adjacent materials with duct tape, to create an airtight barrier.

.2 Cover plywood barrier with orange rip-proof polyethylene sealed with tape,

as specified for work areas.

.6 Maintenance of Enclosures

.1 Maintain enclosures in tidy condition. .2 Ensure that barriers and polyethylene liners are effectively sealed and taped.

Repair damaged barriers and remedy defects immediately upon discovery. .3 Visually inspect all enclosures at the beginning of each working period. .4 Use smoke methods to test effectiveness of barriers when directed by Consultant.

.7 Asbestos Abatement work shall not commence until: .1 Arrangements have been made for disposal of waste. .2 For wet stripping techniques, arrangements have been made for containing,

filtering and disposal of waste water. .3 Work areas and decontamination enclosures (and parts of the building required to

remain in use) are effectively segregated. .4 Tools, equipment and material and waste containers are on hand. .5 Arrangements have been made for building security. .6 Warning signs specified in 3.1.1.10 are displayed where access to contamination


taken. .8 The Consultant has approved the enclosure for removal.



3.2 Asbestos Removal

.1 Before removing asbestos .1 Prepare site. .2 Spray asbestos material with water containing the specified wetting agent, using

airless spray equipment capable of providing a "mist" application to prevent release of fibres. Saturate the asbestos material sufficient to wet it to the substrate without causing excess dripping. Spray the asbestos material repeatedly during work process to maintain saturation and to minimize asbestos fibre dispersion.

.2 Remove the saturated asbestos material in small sections. Do not allow saturated

asbestos to dry out. As it is being removed, pack the material in sealable plastic bags, 0.15 mm thick, with pre- printed asbestos warning labels. Double-bag to ensure integrity. If asbestos waste contains hard or sharp objects capable of puncturing the bags, bags must be immediately placed in rigid, watertight containers, appropriately labelled. No friable material is to remain lying on the floor at the end of the day shift.

.3 Seal filled bags by "goose-necking" top and taping. Clean external surfaces of

bags/containers thoroughly by wet sponging. Remove immediately from work area to Staging Area, and from there to decontamination Wash Area. Wash containers thoroughly in decontamination Wash Area, and store in Holding Room pending removal to Unloading Room and outside. Ensure that containers are removed from the Holding Room by workers who have entered from uncontaminated areas dressed in clean overalls. Place double-bagged waste in labelled, rigid containers (e.g., cardboard boxes, fibre or metal drums) for transport to dump, as required by Ont. Reg. 309 (double bags alone are not acceptable unless the hauler is specifically licensed to transport asbestos waste in bulk).

.4 After completion of stripping work, all surfaces from which asbestos has been removed

shall be nylon brushed and wet- sponged to remove all visible material. During this work the surfaces shall be kept wet.

.5 Where the Consultant decides complete removal of ACM is impossible due to

obstructions such as structural members or major service elements, seal/encapsulate the material to the satisfaction of the owner.

.6 After nylon brushing and wet sponging to remove visible asbestos and after sealing

asbestos-containing material impossible to remove, wet clean the entire work area including the Equipment and Access Room, and equipment used in the process. After inspection by Consultant, apply continuous coat of slow-drying sealer to all surfaces of workspace. Allow at least 4 hours with no entry, activity, ventilation or disturbance other than operation of negative pressure units during this period. A Final Air Sample will be collected inside the enclosure and the site will be approved for final clean-up if the fibre concentration of the air is less than 0.01 (f/cc).

3.3 Final Clean-up

.1 Following cleaning specified in 3.2.6 above proceed with final clean-up. Note: do not

remove any of the critical barriers until the polyethylene used to protect the flooring and walls has been removed, all areas have been cleaned and the Consultant has approved the clean-up.



.2 Remove polyethylene sheet by rolling it away from walls to centre of work area. Vacuum all visible asbestos-containing particles observed during clean-up immediately, using HEPA vacuum equipment. The work area is to remain enclosed and the negative air units running during this clean-up.

.3 Place polyethylene seals, tape, cleaning material, clothing, and other contaminated waste

in plastic bags and subsequently into sealed, labelled, rigid waste containers for transport (double plastic bags alone are not acceptable unless hauler is specifically licensed to transport asbestos waste in bulk).

.4 Work areas, Equipment and Access Room, and other enclosures that may be

contaminated shall be included in the clean-up.

.5 Sealed waste containers and all equipment used in the work shall be included in the clean-up and shall be removed from work areas, via the Container and Equipment Decontamination Enclosure System, at an appropriate time in the cleaning sequence.

.6 A final check shall be carried out to ensure that no dust or debris remains on surfaces as

a result of dismantling operations, and air monitoring, using aggressive methods, may be carried out again to ensure that asbestos levels in the building do not exceed 0.01 fibres/ml. Repeat cleaning using HEPA vacuum equipment, or set cleaning methods where feasible, in conjunction with sampling until levels meet this criteria.

.7 As work progresses, and to prevent exceeding available storage capacity on-site, remove

sealed and labelled containers containing asbestos waste from the site. Provide Consultant with a copy of the dump receipt for each load delivered to the landfill.

.8 Only when the area has been visually approved, subsequent to the removal of the

polyethylene from the floors and walls and the clean-up of the entire work area, will the critical barriers be permitted to be removed.

3.4 Air Monitoring .1 From commencement of work until completion of cleaning operations, air samples (non-

aggressive) will be taken periodically by Consultant both inside and outside of work area enclosures.

.2 If air monitoring shows that fibre concentrations outside of the work area have increased,


.3 Results of air monitoring inside work areas will be used to verify that the proper type of

respirators is being worn. .4 Final clearance air samples will be collected upon completion of the asbestos “lockdown”

settling period. Results are to be available within four hours to minimize costly delays in tear-down. If the results indicate airborne fibre levels of less than 0.01 f/ml, polyethylene barriers shall be removed and the area cleared for re-occupation. If results are greater than 0.01 f/ml, the area shall be re-cleaned and re-tested at the Contractor's expense until a satisfactory result is obtained





.2 Re-establish mechanical and electrical systems in proper working order. Install

new filters (supplied by Owner). .3 Repair or replace objects damaged in the course of the work, as directed by the

Consultant.

3.6 Inspections by Consultant .1 The Contractor must arrange for the Consultant to perform the following inspections

before carrying out additional work in the specific area: .1 Enclosure Inspection, prior to disturbing any ACM. .2 Contaminated Inspection, while removal work is in progress. .3 Visual Inspection # 1, prior to “lockdown” of the enclosure. .4 Visual Inspection # 2, subsequent to the final clean-up after the air test results

have indicated that the area may be re-occupied, but before removing the critical barriers.




PART 1 GENERAL

1.1 OUTLINE OF WORK

.1 Comply with the requirements of this Section when performing all Type 1 asbestos abatement operations as noted in the project specifications under Section 02 81 01 – “Asbestos Scope of Work”.

1.2 WORK REQUIREMENTS

.1 In addition to the noted project specifications and Ontario Regulations 278/05 the following requirements will also be enforced on this project:

.1 Proof of acceptable DOP testing results (within the last month) of Negative Air

Handling Units (NAHU’s) are mandatory and must include clearly visible / readable and signed labels from the testing company affixed to each unit if exhausting within the building or to highly accessible area(s) outside the school.

.2 At least one additional NAHU must be on-site and ready to be used as a back-up

while abatement work is being conducted. .3 All movement of asbestos waste from the work area must not be conducted

between the hours of 6:00 am to 6:00 pm if accessing through public areas of the school (not including weekends / holidays / summer break).

.4 All enclosure walls that are in direct contact to non-abatement workers requires a

½” plywood protective barrier be securely installed. .5 Critical barriers used to seal all openings leading out of the work area(s) must

consist of blue polyethylene woven (rip-proof) material.

1.3 DEFINITIONS

.1 ACM: Asbestos-containing materials .2 HEPA Vacuum: High Efficiency Particulate Air filtered vacuum equipment with a filter

system capable of collecting and retaining fibres greater than 0.3 microns in diameter at 99.97% efficiency.

.3 Amended Water: Water with a non-ionic surfactant wetting agent added to reduce water

tension to allow wetting of fibres.

.4 Authorized Visitor: the Consultant or his representative, and persons representing regulatory agencies.

.5 Work Areas: Areas where removal of ACM takes place. .6 Critical Barriers: polyethylene used to cover openings such as registers and diffusers,

heating units, radiators, windows, doors etc. .7 Polyethylene sheeting sealed with tape: polyethylene sheeting of type and thickness

specified sealed with tape along all edges, around penetrating objects, over cuts and tears and elsewhere as required to provide a continuous polyethylene membrane to protect underlying surfaces from water damage or damage by sealants, and to prevent escape of asbestos fibres through the sheeting into a clean area.



.8 Negative Pressure: a system which extracts air directly from work area, filters such extracted air through a High Efficiency Particulate Aerosol filtering system, and discharges this air directly from the work area to exterior of Building. This system shall maintain a minimum Pressure differential of 5 Pa. (0.02 in. of water) relative to adjacent areas outside of work area, be equipped with an alarm to warn of system breakdown.

.9 Airlock: a system for permitting ingress or egress without permitting air movement

between a contaminated area and an uncontaminated area. Doorways shall be at least 2 m apart.

.10 Curtained Doorway: an arrangement of closures to allow ingress and egress from one

room to another while permitting minimal air movement between rooms, typically constructed by placing two overlapping sheets of polyethylene over an existing or temporarily framed doorway, securing each long the top of the doorway, securing the vertical edge of one sheet along one vertical edge of the doorway and the other sheet along the opposite vertical side of the doorway. All free edges of polyethylene shall be reinforced with duct tape and the bottom edge shall be weighted to ensure proper closing. Each polyethylene sheet shall overlap openings not less than 1.5 m on each side.

.11 Sign In/Out Forms: an inventory of the names of the workers and the times that they

have entered/exited the enclosure.



1.5 SUBMITTALS

Before commencing asbestos work, submit to the Consultant the following:




.3 Documentation, including test results and MSDS sheets, for sealer and other materials

proposed for use. .4 Copy of the written respirator procedures (use, cleaning and maintenance). .5 Initial Project Schedule .6 Copy of Notice of Project sent to inspector at local office of Ontario Ministry of Labour. .7 Layout of proposed enclosures, decontamination facilities and locations of negative air

units, for review.




.1 Lab testing results of ACM taken from surfaces within the scope of work and work area(s) of this project is presented in Section 02 82 00. These are for general information only and are not necessarily representative of all ACM contained within the scope of this project or the work area(s).





.2 Instructions and training related to respirators shall include:

.1 The limitations of the equipment.

.2 The inspection and maintenance of the equipment.

.3 The fitting of the equipment.

.4 The disinfecting of the equipment.



.2 Protective Clothing: Provide workers with full body disposable-type coveralls that do not readily retain or permit penetration of asbestos fibres, and consists of full-body covering including head covering with snug-fitting cuffs at wrists, ankles and neck. Every worker who enters the work area shall wear protective clothing.

.3 Eating, drinking, chewing and smoking are not permitted in the work area.

.4 Each worker shall:

.1 Sign in on the Sign In/Out Forms, which are to be, located either inside the Clean Room or outside of the enclosure. Remove street clothes in clean change room and put on respirator with new filters or reusable filters that have been tested as satisfactory, clean coveralls and head covers before entering Equipment and Access Rooms or work area. If reusable protective clothing is used, each worker shall don respirator only before entering Equipment and Access Rooms where clothing is stored. All street clothes, uncontaminated footwear, towels and similar uncontaminated articles shall be stored in clean change room.



.2 Remove gross contamination from clothing before leaving work area, then proceed to Equipment and Access Room and remove all clothing except respirators. Place contaminated work suits in receptacles for disposal with other asbestos-contaminated materials. Leave reusable items, except respirator, in Equipment and Access Room. Still wearing the respirator, proceed naked to the showers. Clean outside of respirator with soap and water while showering; remove respirator; remove filters and wet them and dispose of filters in the container provided for the purpose; wash and rinse the inside of the respirator. When not in use in the work area, store work footwear in Equipment and Access Room. Upon completion of asbestos abatement, dispose of footwear as contaminated waste or clean thoroughly inside and out using soap and water before removing from work area or from Equipment and Access Room.

.3 Following showering and drying off, proceed to clean change room and dress in

street clothes at the end of each day's work, or in clean coveralls before eating, smoking or drinking. Sign out after each shift. If re-entering work area, follow procedures outlined in 1.9.4.1 above.

.4 Enter the unloading room from outside dressed in clean coveralls to remove waste

containers and equipment from the Holding Room of the Container and Equipment Decontamination Enclosure system. No worker shall use this system as a means to leave or enter the work area.

.5 Workers shall be full protected with respirators and protective clothing during

preparation of system of enclosures prior to commencing actual asbestos abatement.

.6 Provide and post in Clean Change Room and in Equipment and Access Room the

procedures described in 1.9 of this section.






1.10 NOTIFICATION

.1 Not later than ten (10) days before commencing work on this project, or as soon as possible after award of the contract, notify, orally and in writing, an inspector at the local office of the Construction Health and Safety Branch of the Ontario Ministry of Labour.



PART 2 PRODUCTS

2.1 MATERIALS


.1 Polyethylene: 0.15 mm (6 mil) thick. .2 Rip-proof polyethylene: Orange thick woven polyethylene.

.2 Wetting Agent: 50% polyoxyethylene ester and 50% polyoxyethylene ether mixed with

water in a concentration to provide thorough wetting of ACM.

.3 Waste Containers: As required by Ontario Regulation 309, asbestos waste shall be contained in a rigid, impermeable, sealable container of sufficient strength to accommodate the weight and nature of the waste. Where the container is a cardboard box, the waste must be sealed in a six-mil (0.15 mm) polyethylene bag before being placed within the box. All waste containers shall have a printed cautionary asbestos warning, clearly visible when ready for removal to the disposal site. The warning must be in large, easily legible letters that contrast in colour with the background, and consist of the word "CAUTION" in letters not less than 10 cm in height and the words:

CONTAINS ASBESTOS FIBRES Avoid Creating Dust and Spillage Asbestos May be Harmful to Your Health Wear Approved Protective Equipment





.6 Encapsulant: Foster Bridging Encapsulant 32–32, Childers CHIL-BRIDGE CP-211

Bridging Encapsulant or other equivalent encapsulant product approved by the Consultant.




PART 3 EXECUTION

3.1 PREPARATION

.1 Work Areas:

.1 Shut off air handling and ventilation systems to prevent contamination and fibre dispersal to other areas of the school during work phase.

.2 Critical Barriers: seal off all openings such as ducts, grilles and diffusers, with

polyethylene sheeting sealed with tape.

.3 Pre-clean moveable objects (and carpeting) within proposed work areas using HEPA vacuum and cover with polyethylene sheeting sealed with tape.

.4 Pre-clean fixed casework, plant and equipment within proposed work areas using

HEPA vacuum and cover with polyethylene sheeting sealed with tape. .5 Clean proposed work areas using, where practicable, HEPA vacuum cleaning


.6 Establish negative pressure system and operate continuously from the time the first

polyethylene is installed to seal openings until final completion of the work including final clean-up. Sufficient negative air units must be provided to maintain a minimum of four (4) air changes per hour within the work area (calculated at 75% efficiency of the units). Prior agreement from the Consultant is to be obtained for placement of the units. Exhaust ducting must be semi-rigid (i.e., wire-reinforced polyethylene). Note that for relatively small or confined Type 3 projects (i.e., removal of < 200 ft.2 of surfacing material, or removal in a confined area such as a small boiler room), the use of one or more large HEPA vacuums, discharging outside of the enclosure, to establish negative air is potentially acceptable, provided that the minimum requirement of 4 air changes per hour within the work area is maintained. Prior agreement from the Consultant is required in these cases.

.7 Seal off (critical barriers) the remainder of the openings such as corridors,

doorways, windows, skylights, etc., with polyethylene sheeting (6 mil) sealed with tape.

.8 Cover floor and wall surfaces with polyethylene sheeting sealed with tape. Use 1

layer of orange rip-proof to cover walls and 2 layers of orange rip-proof polyethylene to cover floor. Cover floors first so that polyethylene extends at least 300 mm up walls then cover walls to overlap floor sheeting.

.9 Build airlocks at all entrances to and exist from work areas so that work areas are

always closed off by one curtained doorway when workers enter or exit. .10 At each access to work areas install warning signs in upper case letters reading as

follows:

"CAUTION ASBESTOS HAZARD AREA” (24 mm) “NO UNAUTHORIZED ENTRY” (19 mm) “WEAR ASSIGNED PROTECTIVE EQUIPMENT” (19 mm) “BREATHING ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM” (7 mm)".



.11 After work area isolation, remove any heating, ventilating, and air conditioning filters, pack in sealed plastic bags 0.15 mm minimum thick and treat as contaminated asbestos waste. Remove ceiling-mounted objects such as lights, partitions, other fixtures not previously sealed off, and other objects that interfere with asbestos removal, as directed by Consultant. (Note -upon completion of removal, replacement of such objects and re-wiring shall be the responsibility of the Contractor, provided they are performing the re-instatement). Use localized water spraying during fixture removal to reduce fibre dispersal.

.12 Maintain emergency and fire exits from work areas or establish alternative exits

satisfactory to Fire Commissioner of Canada and Provincial Fire Marshall. .13 Where application of water is required for wetting ACM, shut off electrical power,


.2 Worker Decontamination Enclosure System:

Worker Decontamination Enclosure System shall consist of an Equipment / Access Room, a Shower Room and a Clean Room, as follows:

.1 Equipment and Access Room: build an Equipment and Access Room between

Shower Room and work areas, with two curtained doorways, one to the Shower Room and one to work areas using orange rip-proof polyethylene (2 layers on floor). Install waste receptor and storage facilities for workers' shoes and any protective clothing to be reused in work areas. The Equipment and Access Room shall be large enough to accommodate specified facilities, any other equipment needed and at least one worker allowing him sufficient space to undress comfortably.

.2 Shower Room: build a Shower Room between the Clean Room and Equipment

Room, with two curtained doorways, one to the Clean Room and one to Equipment and Access Room using orange rip-proof polyethylene (2 layers on floor). Provide one shower for every five workers. Provide a constant supply of hot and cold or warm water. Provide piping and connect to water sources. Provide soap, clean towels and appropriate containers for disposal of used respirator filters.

.3 Clean Room: build a Clean Room between the Shower Room and clean areas

outside of enclosures, with two curtained doorways, one to outside of enclosures and one to Shower Room using orange rip-proof polyethylene (2 layers on floor). Provide lockers or hangers for workers street clothes and personal belongings. Provide storage for clean protective clothing and respiratory equipment. Install a mirror to permit workers to fit respiratory equipment properly, and sufficient hangers and hooks.

.3 Container and Equipment Decontamination Enclosure System:

Container and Equipment Decontamination Enclosure System shall comprise of a Staging Area within the work area, a Wash Area, a Holding Room and an Unloading Room. The purpose of this system is to provide a means to decontaminate scaffolding, waste and material containers vacuum and spray equipment, and other tools and equipment for which the Worker Decontamination Enclosure System is not suitable.

.1 Staging Area: designate a Staging Area in the work area for gross removal of dust and debris from waste containers and equipment, labelling and sealing of waste



containers, and temporary storage pending removal to Wash Area. Staging Area shall have a curtained doorway to the Wash Area.

.2 Wash Area: build a Wash Area between the Staging Area and Holding Room with

two curtained doorways, one to the Staging Area and one to the Holding Room using orange rip-proof polyethylene (2 layers on floor). Provide high-pressure low volume sprays for washing of waste containers and equipment. Provide piping and connect to water sources and drains.

.3 Holding Room: build a Holding Room between the Wash Area and Unloading

Room, with two curtained doorways, one to the Wash Area and one to the Unloading Room using orange rip-proof polyethylene. The Holding Room shall be of sufficient size to accommodate at least two waste containers and the largest item of equipment used.

.4 Unloading Room: build an Unloading Room between the Holding Room and

outside, with two curtained doorways, one to the Holding Room and one to outside using orange rip-proof polyethylene.

.4 Construction of Decontamination Enclosures:

.1 Build suitable framing for enclosures and line with orange rip-proof polyethylene

sheeting sealed with tape. Use two layer of orange rip-proof polyethylene on floors.

.2 Build curtained doorways between enclosures so that when people move through

or when waste containers and equipment are moved through a doorway, one of the two closures comprising the doorway always remains closed.


.1 Separate parts of the building remaining in use from parts of the building used for

asbestos abatement by means of an airtight barrier system constructed as follows:

.1 Build suitable floor to ceiling lumber or metal stud framing, cover with orange rip-proof polyethylene sheeting sealed with tape, and apply 9 mm minimum thick plywood. Seal all joints between plywood sheets and between plywood and adjacent materials with duct tape, to create an airtight barrier.

.2 Cover plywood barrier with orange rip-proof polyethylene sealed with tape,

as specified for work areas.

.6 Maintenance of Enclosures

.1 Maintain enclosures in tidy condition. .2 Ensure that barriers and polyethylene liners are effectively sealed and taped.

Repair damaged barriers and remedy defects immediately upon discovery. .3 Visually inspect all enclosures at the beginning of each working period. .4 Use smoke methods to test effectiveness of barriers when directed by Consultant.

.7 Asbestos Abatement work shall not commence until:

.1 Arrangements have been made for disposal of waste.



.2 For wet stripping techniques, arrangements have been made for containing, filtering and disposal of waste water.

.3 Work areas and decontamination enclosures (and parts of the Building required to

remain in use) are effectively segregated. .4 Tools, equipment and material and waste containers are on hand. .5 Arrangements have been made for security at the Building. .6 Warning signs specified in 3.1.1.10 are displayed where access to contamination


taken. .8 The Consultant has approved the enclosure for removal.

3.2 Asbestos Removal

.1 Before removing asbestos .1 Prepare site. .2 Spray asbestos material with water containing the specified wetting agent, using

airless spray equipment capable of providing a "mist" application to prevent release of fibres. Saturate the asbestos material sufficient to wet it to the substrate without causing excess dripping. Spray the asbestos material repeatedly during work process to maintain saturation and to minimize asbestos fibre dispersion.

.2 Remove the saturated asbestos material in small sections. Do not allow saturated

asbestos to dry out. As it is being removed, pack the material in sealable plastic bags, 0.15 mm thick, with pre- printed asbestos warning labels. Double-bag to ensure integrity. If asbestos waste contains hard or sharp objects capable of puncturing the bags, bags must be immediately placed in rigid, watertight containers, appropriately labelled. No friable material is to remain lying on the floor at the end of the day shift.

.3 Seal filled bags by "goose-necking" top and taping. Clean external surfaces of

bags/containers thoroughly by wet sponging. Remove immediately from work area to Staging Area, and from there to decontamination Wash Area. Wash containers thoroughly in decontamination Wash Area, and store in Holding Room pending removal to Unloading Room and outside. Ensure that containers are removed from the Holding Room by workers who have entered from uncontaminated areas dressed in clean overalls. Place double-bagged waste in labelled, rigid containers (e.g., cardboard boxes, fibre or metal drums) for transport to dump, as required by Ont. Reg. 309 (double bags alone are not acceptable unless the hauler is specifically licensed to transport asbestos waste in bulk).

.4 After completion of stripping work, all surfaces from which asbestos has been removed

shall be nylon brushed and wet- sponged to remove all visible material. During this work the surfaces shall be kept wet.

.5 Where the Consultant decides complete removal of ACM is impossible due to

obstructions such as structural members or major service elements, seal the material to the satisfaction of the owner.



.6 After nylon brushing and wet sponging to remove visible asbestos and after sealing asbestos-containing material impossible to remove, wet clean the entire work area including the Equipment and Access Room, and equipment used in the process. After inspection by Consultant, apply continuous coat of slow-drying sealer to all surfaces of workspace. Allow at least 4 hours with no entry, activity, ventilation or disturbance other than operation of negative pressure units during this period. A Final Air Sample will be collected inside the enclosure and the site will be approved for final clean-up if the fibre concentration of the air is less than 0.01 (f/cc).

3.3 Final Clean-up

.1 Following cleaning specified in 3.2.6 above proceed with final clean-up. Note: do not

remove any of the critical barriers until the polyethylene used to protect the flooring and walls has been removed, all areas have been cleaned and the Consultant has approved the clean-up.

.2 Remove polyethylene sheet by rolling it away from walls to center of work area. Vacuum all visible asbestos-containing particles observed during clean-up immediately, using HEPA vacuum equipment. The work area is to remain enclosed and the negative air units running during this clean-up.

.3 Place polyethylene seals, tape, cleaning material, clothing, and other contaminated waste in plastic bags and subsequently into sealed, labelled, rigid waste containers for transport (double plastic bags alone are not acceptable unless hauler is specifically licensed to transport asbestos waste in bulk).

.4 Work areas, Equipment and Access Room, Washroom, Shower Room, and other enclosures that may be contaminated shall be included in the clean-up.

.5 Sealed waste containers and all equipment used in the work shall be included in the clean-up and shall be removed from work areas, via the Container and Equipment Decontamination Enclosure System, at an appropriate time in the cleaning sequence.

.6 A final check shall be carried out to ensure that no dust or debris remains on surfaces as a result of dismantling operations, and air monitoring, using aggressive methods, may be carried out again to ensure that asbestos levels in the Building do not exceed 0.01 fibres/ml. Repeat cleaning using HEPA vacuum equipment, or set cleaning methods where feasible, in conjunction with sampling until levels meet this criteria.

.7 As work progresses, and to prevent exceeding available storage capacity on-site, remove sealed and labelled containers containing asbestos waste from the site. Provide Consultant with a copy of the completed and signed shipping document, as required by the Transportation of Dangerous Goods Act.

.8 Only when the area has been visually approved, subsequent to the removal of the

polyethylene from the floors and walls and the clean-up of the entire work area will the critical barriers be permitted to be removed.

3.4 Air Monitoring .1 From commencement of work until completion of cleaning operations, air samples (non-

aggressive) will be taken periodically by Consultant both inside and outside of work area enclosures.

.2 If air monitoring shows that fibre concentrations outside of the work area have increased,




.3 Results of air monitoring inside work areas will be used to verify that the proper type of respirators is being worn.

.4 Final clearance air samples will be collected upon completion of the asbestos “lockdown”

settling period. Results are to be available within four hours to minimize costly delays in tear-down. If the results indicate airborne fibre levels of less than 0.01 f/ml, polyethylene barriers shall be removed and the area cleared for re-occupation.

.5 If results are greater than 0.01 f/ml, the area shall be re-cleaned and re-tested at the

Contractor's expense until a satisfactory result is obtained.



.2 Re-establish mechanical and electrical systems in proper working order. Install new filters (supplied by Owner).

.3 Repair or replace objects damaged in the course of the work, as directed by the

Consultant.

3.6 Inspections by Consultant .1 The Contractor must arrange for the Consultant to perform the following inspections

before carrying out additional work in the specific area: .1 Enclosure Inspection, prior to disturbing any ACM. .2 Contaminated Inspection, while removal work is in progress. .3 Visual Inspection # 1, prior to “lockdown” of the enclosure. .4 Visual Inspection # 2, subsequent to the final clean-up after the air test results

have indicated that the area may be re-occupied, but before removing the critical barriers.


PROJECT NORTH:

A2.0

DATE:

DRAWN BY:

PROJECT NO:

LIBRARY NO:

SCALE:

NO:

REF.:

SECTION:

As Noted

217079

217079 - FP

February 2018

JD / BD

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-

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MITCHELL

JENSEN

ARCHITECTS

705.474.3250 mitchelljensen.ca

124a Main St. E., North Bay, ON, P1B 1A8

Flooring, Ceiling, Lighting & Fire

Alarm System Replacement,

Magnetawan PS

S

LICENCE

TAO

N

ASIOR IO

N

O IAC

T

OF

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