EXECUTIVE SUMMARYToronto Catholic District School Board retained Pinchin Environmental Ltd. to investigate for possible mould growth at Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, Ontario. This assessment was conducted after concerns of possible mould growth were communicated to the School Board in two different areas of the school. The scope of this assessment, conducted on March 14, 2014 was limited to particular areas. The assessment included interviews with the school board safety officer and the caretaker of the school, physical inspections, limited testing, and limited intrusive inspections.
Mould growth was identified in Room 102A, the lunchroom and Rooms 106A, B, D and F. It was reported that during heavy precipitation events or snow melts, water flows down the duct and into Room 102. This is likely what has caused the vinyl floor tiles to delaminate. The duct also has accumulated dust which could have an effect on perceptions about indoor air quality in that room.
The mould air sample results indicated that air quality was not being impacted by airborne spore concentrations.
The client provided Pinchin with a Hazardous Materials Assessment Report, prepared by Jacques Whitford dated May 8, 2008. The disturbance of the asbestos-containing vinyl floor tiles must follow Type 1 procedures as required by Ontario Ministry of Labour Regulation 278/05. The disturbance of the asbestos-containing drywall joint compound must follow Type 2 procedures as required by Ontario Ministry of Labour Regulation 278/05.
The mould growth identified in this assessment in Room 102A was likely caused by the roof leak three years ago and the mould growth in the 106 rooms was likely caused by the large rain infiltration event in July 2013.
The following recommendations are offered to meet the requirements of current regulations and guidelines. Pinchin would be pleased to assist with providing names of experienced contractors and planning and inspection of abatement work.
1. Communicate the findings of this report to the occupants. Consider any necessary interim risk management measures.
2. Arrange for the preparation of a comprehensive work plan to define the mould abatement work recommended below.
3. Clean the supply air duct that is providing air into Room 102 of all accumulated dust.4. Make adjustments to the outdoor air intake to ensure water does not infiltrate through the
ductwork.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
5. Ensure a mould abatement firm with suitable experience and insurance coverage for mould/asbestos remediation is retained for this work.
6. Perform the following work using Environmental Abatement Council of Ontario Level 2 mould procedures and O. Reg 278/05 Type 2 asbestos procedures as indicated on Drawing 1:
a. Remove and dispose of all wall finishes to a height of two feet in Room 102A, the lunchroom, 106A, B, D and F.
7. Perform the following work using O. Reg 278/05 Type 1 asbestos procedures:a. Remove and replace vinyl floor tiles in Room 102.
8. Retain an environmental consultant to provide oversight inspections during the course of the cleanup project. As a minimum, the following inspections should be undertaken.
a. Milestone Inspection A – Clean Site PreparationInspection of the work area prior to the start of contaminated work, to reduce the risk of exposure to occupants in the building.
b. Milestone Inspection B – Post-Abatement Visual InspectionInspection of work area after mould removal and cleaning to document that the scope of work had been completed and the work area was acceptably clean.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
TABLE OF CONTENTS1.0 INTRODUCTION AND SCOPE ..........................................................................................1
1.1 Statement of Understanding ........................................................................................1 1.2 Scope of Work.............................................................................................................1
2.0 METHODOLOGY ................................................................................................................2 2.1 Interviews and Inspections ..........................................................................................2 2.2 Test Methods ...............................................................................................................2 2.3 Sample Analysis ..........................................................................................................2
3.0 FINDINGS.............................................................................................................................3 3.1 Results of Interview.....................................................................................................3 3.2 Facility Description .....................................................................................................3 3.3 Results of Inspections and Testing..............................................................................4
4.0 DISCUSSION........................................................................................................................5 4.1 Discussion of Mould Growth ......................................................................................5 4.2 Discussion of Causation ..............................................................................................6 4.3 Communication and Risk Management ......................................................................6
APPENDICESAppendix I Background on Mould Growth and Other Building-Related HazardsAppendix II PhotographsAppendix III DrawingAppendix IV-A Results of Bulk SampleAppendix IV-B Results of Spore Trap Air Samples
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
1.1 Statement of UnderstandingPinchin Environmental Ltd. was retained by Kathleen Wilson on behalf of Toronto Catholic District School Board to conduct an assessment for possible mould growth at 101 Mason Boulevard, Toronto, Ontario. The assessment was performed on March 14, 2014 by Cheryl Hunt, Project Technologist and the project was managed by Malissa McGuigan, Project Manager.
This assessment occurred due to concerns from the caretakers and teachers of possible mould growth in the caretaker’s office, Room 102 and 102A and also Classroom 106D and Office 106F.
Appendix I presents background information regarding indoor mould growth and other building-related hazards.
1.2 Scope of WorkThis assessment was limited to Rooms 102, 102A, and Rooms 106A, B, D, and F and involved the following activities:
Assessment of the building environment;
Development of a sampling strategy;
Inspection of building components including limited intrusive inspection;
Evaluation of the following parameters:o Moisture content in selected building components;o Relative humidity; ando Temperature.
Collection and analysis of the following samples, including reference and quality assurance samples:
o Four spore trap air samples to determine airborne mould spore concentrations;and
o One bulk sample to test for mould growth.
Quantification of suspect mould-contaminated materials; and
Photography of site conditions.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
2.1 Interviews and InspectionsThe investigator interviewed building staff and third party property manager to discuss the history of water damage, and any indoor air quality complaints.
The investigator performed a detailed walkthrough inspection for visual indications of suspect mould growth and water damage on accessible building materials.
The investigator did not perform any destructive work to inspect concealed conditions inside wall and/or ceiling cavities. Where deemed necessary, concealed conditions were examined via existing access panels or by lifting lay in ceiling tiles. Some limited examination of concealed conditions was undertaken; baseboards were peeled back to examine concealed conditions.
2.2 Test MethodsThe investigator used a Delmhorst Brand BD-2100 moisture meter to measure the moisture content of some accessible building materials. The moisture meter is useful for measuring elevated surface moisture, but would not detect moist conditions deep within a wall or ceiling cavity. The moisture meter is calibrated for moisture content of wood and drywall.Measurements made on other materials were compared to measurements made on the same materials in reference locations, believed to be unaffected by water damage.
The investigator measured temperature and relative humidity using a Testo thermohygrometer.
The investigator collected a bulk sample of visually identified mould growth for laboratory confirmation of the visual findings. Bulk and tape lift samples were collected using Pinchin Standard Operating Procedures.
The investigator collected spore trap air samples to assist in the identification of hidden mould growth and to determine if the air quality was being affected by mould growth. The spore trap samples were collected using Allergenco-D impactor cassettes and a constant-flow pump. The investigator calibrated the pump before and after sampling.
2.3 Sample AnalysisThe mould analysis was performed at the Pinchin Environmental Microbiology Laboratory, located at the Mississauga head office. The laboratory is accredited for both mould and Legionella analysis by the American Industrial Hygiene Association (AIHA) Environmental Microbiology Laboratory Accreditation Program (Laboratory ID Number 158835) and participates in the AIHA Environmental Microbiology Proficiency Analytical Testing Program. The laboratory also participates in a Canadian Analytical Laboratory Association
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
3.1 Results of InterviewKathleen Wilson, Safety Officer, reported the following:
In November 2012, two water infiltration issues occurred through the ductwork in Room 102.
Air samples were taken in November 2013 in Room 102 and showed elevated Aspergillus levels.
Service Quality Supervisor came in late November 2013 and removed an access panel in the floor to fix an on-going steam leak that was causing standing water under the wooden floor in Room 102A.
Service Quality Supervisor came back in on Feb 26, 2014 and confirmed the leak had been fixed.
He removed a block from the duct to ensure fresh air was coming into the room.
The caretaker reported that a roof leak occurred in Room 102A three years before. Room 102 and 102A are not being used for prolonged periods since the previous air sample results came back. During rainstorms and snow melt, water flows through the supply air duct and puddles to the floor. The July 8, 2013 rainstorm caused water to leak through the windows into Rooms 106 A, B, D and F. There was about an inch of water on the floor and no restoration company was called.
3.2 Facility DescriptionThe interior finishes of Rooms 102 and 102A are wood flooring, vinyl floor tiles, drywall and concrete walls and concrete ceilings.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
The interior finishes of Rooms 106A, B, D and F are drywall walls, concrete walls, terrazzo floors and baseboards, vinyl floor tile and baseboards and ceiling tiles.
The Jacques Whitford, Final Report Asbestos-Containing Building Materials Assessment, May 8, 2008 report confirms the presence of asbestos-containing building materials at the site.Asbestos-containing materials include ceiling tiles, pipe fittings, linoleum sheet flooring, vinyl floor tiles and drywall joint compound.
3.3 Results of Inspections and TestingAppendix II presents photographs taken during the assessment. Appendix III presents the drawing from the assessment. Appendix IV presents the mould analytical reports.
Table I – Summary of InspectionsLoretto Abbey Catholic School
Location
Estimated Extent of Mould
Growth,(ft2)
Moisture Content,(%) a
Temperature, (°C) &Relative Humidity,
(%) Tests
Room 102 0 Drywall: 0.1-0.2 Temp: 19.5RH: 31.4
Air Sample: 815523
Notes: Accumulated dust was observed in the supply air duct supplying air to the room (Photo 1). Vinyl floor tiles were delaminating, which likely indicates past water damage (Photo 2, Drawing 1). Indoor mould air sample results were below the detection limit.
Room 102A
15 Drywall: 0.2 Temp: 20.2RH: 32.7
Bulk Sample: B-01
Notes: Mould growth was identified on the south drywall wall in the south west corner (Photo 3, Drawing 1). Results of bulk sample analysis confirmed of the presence of Acremonium growth.
Room 106A-Computer Room
20 Drywall: 0.3 Temp: 23.9RH: 22.2
N/A
Notes: Mould growth was identified on the south, west and north drywall walls (Photo 4, Drawing 1). Water damage was observed under the window along the concrete wall (Photo 5).
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
Notes: Mould growth was identified on the east drywall wall (Photo 6, Drawing 1). Water damage was observed in the north west corner and along the north concretewall (Photo 7, Drawing 1).
Room 106D-Classroom
10 Drywall: 0.2 Temp: 23.4RH: 20.3
Air Sample:815522
Notes: Mould growth was identified on the north drywall wall (Photo 8, Drawing 1). Indoor spore trap air sample results were below the detection limit.
Room 106F-Office
3 Drywall: 0.1 Temp: 23.6RH: 22.8
N/A
Notes: Mould growth was identified on the east drywall wall (Photo 9, Drawing 1).
Lunchroom 5 Drywall: 0.2 Temp: 23.6RH: 22.8
N/A
Notes: Mould growth was identified on the east drywall wall (Photo 10).
Outdoors N/A N/A Temp: 3.2RH: 55.3
Air Sample:815544
Notes: It was sunny and windy. The outdoor air intake for Room 102 is at ground level outside of the school (Photo 11).
a Drywall with moisture content above 0.7% may support mould growth. 1
4.0 DISCUSSION
4.1 Discussion of Mould GrowthMould growth in buildings is a risk factor for adverse health effects and should be remediated as soon as possible following currently accepted procedures. Pinchin recommends that mould abatement follow the procedures set by the Environmental Abatement Council of Ontario
1 Janet Macher, Ed.; Bioaerosols: Assessment and Control; American Conference of Governmental Industrial Hygienists, Cincinnati, OH (1999).
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
(EACO), developed with the participation of the Ontario Ministry of Labour. Mould growth was identified in Room 102A, the lunchroom and Rooms 106A, B, D and F.
The air sample results indicated that air quality was not being impacted by airborne spore concentrations.
The disturbance of the asbestos-containing vinyl floor tiles must follow Type 1 procedures as required by Ontario Ministry of Labour Regulation 278/05.
The disturbance of the asbestos-containing drywall joint compound must follow Type 2procedures as required by Ontario Ministry of Labour Regulation 278/05.
Health Canada recommends that mould abatement work be inspected to standard protocols such as those of the American Industrial Hygiene Association. The EACO mould guidelinerecommends expert supervision of Level 2 and Level 3 projects. We recommend that Pinchin Environmental finalize the remediation plan and provide oversight inspections for the project.
It was reported that during precipitation events or melting, water flows down the duct and into Room 102. This is likely what has caused the vinyl floor tiles to buckle. The duct also has accumulated dust which could have an effect on the indoor air quality in that room.
4.2 Discussion of CausationThe mould growth identified in this assessment in Room 102A was likely caused by the roof leak three years ago and the mould growth in the 106 rooms was likely caused by the large rain event in July 2013.
4.3 Communication and Risk ManagementPinchin recommends that the findings of this report be communicated to the occupants as recommended by current mould guidelines. Furthermore, both federal and provincial occupational health and safety legislation require the employer to share this report with the health and safety committee or safety representative. The Client should also consider any interim risk management actions that would be appropriate until the mould growth can be abated. These might include isolating an area of the building or removing particularly sensitive individuals.
5.0 RECOMMENDATIONSThe following recommendations are offered to meet the requirements of current regulations and guidelines. Pinchin would be pleased to assist with providing names of experienced contractors and planning and inspection of abatement work.
1. Communicate the findings of this report to the occupants. Consider any necessary interim risk management measures.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
2. Arrange for the preparation of a comprehensive work plan to define the mould abatement work recommended below.
3. Clean the supply air duct that is providing air into Room 102 of all accumulated dust.4. Make adjustments to the outdoor air intake to ensure water does not infiltrate through the
ductwork.5. Ensure a mould abatement firm with suitable experience and insurance coverage for
mould/asbestos remediation is retained for this work.6. Perform the following work using Environmental Abatement Council of Ontario Level 2
mould procedures and O. Reg 278/05 Type 2 asbestos procedures as indicated on Drawing 1:
a. Remove and dispose of all wall finishes to a height of two feet in Room 102A, the lunchroom, 106A, B, D and F.
7. Perform the following work using O. Reg 278/05 Type 1 asbestos procedures:a. Remove and replace vinyl floor tiles in Room 102.
8. Retain an environmental consultant to provide oversight inspections during the course of the cleanup project. As a minimum, the following inspections should be undertaken.
a. Milestone Inspection A – Clean Site PreparationInspection of the work area prior to the start of contaminated work, to reduce the risk of exposure to occupants in the building.
b. Milestone Inspection B – Post-Abatement Visual InspectionInspection of work area after mould removal and cleaning to document that the scope of work had been completed and the work area was acceptably clean.
6.0 LIMITATIONSWork performed by Pinchin Environmental (Pinchin) was conducted in accordance with generally accepted engineering or scientific practices current in this geographical area at the time the work was performed. No warranty is either expressed or implied, or intended by the agreement executed with the Client, or by furnishing oral or written reports or findings. The Client acknowledges that subsurface and concealed conditions may vary from those encountered inspected. Pinchin could only comment on the conditions observed on the date(s) the assessment was performed. The work was limited to those areas of concern identified by the Client or outlined in our proposal. Other areas of concern may exist but were not investigated within the scope of this assignment. Any budget estimates provided are preliminary and subject to verification unless otherwise agreed.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
Pinchin makes no other representations whatsoever, including those concerning the legal significance of its findings, or as to other legal matters mentioned in this report, including, but not limited to, ownership of any property, or the application of any law to the facts set forth herein. With respect to regulatory compliance issues, regulatory statutes are subject to interpretations and these interpretations may change over time and we undertake no, and expressly disclaim, obligation to advise the Client of such change. Pinchin accepts no responsibility for consequential financial effects on transactions or property values, or requirements for follow-up actions and costs.
The liability of Pinchin or our officers, directors, shareholders or staff will be limited to the lesser of the fees paid or actual damages incurred by the Client. Pinchin will not be responsible for any consequential or indirect damages. Pinchin will only be liable for damages resulting from negligence of Pinchin. Pinchin will not be liable for any losses or damage if client has failed, within a period of two (2) years following the date upon which the claim is discovered within the meaning of the Limitations Act, 2002 (Ontario), to commence legal proceedings against Consultant to recover such losses or damage.
Information provided by Pinchin is intended for Client use only. Pinchin will not provide results or information to any party other than the Client, unless the Client, in writing, requests information to be provided to a third party or unless disclosure by Pinchin is required by law. Unless consented to by Pinchin, which consent may be reasonably and/or arbitrarily withheld,any use by a third party, or reports or documents authored by Pinchin, or any reliance by a third party on or decisions made by a third party based on the findings described in said documents, is the sole responsibility of such third parties. Pinchin accepts no responsibility for damages suffered by any third party as a result of decisions made or actions conducted by any party.
The information provided in this report is based upon analysis of available documents, analytical results, records and drawings, and personal contacts and interviews. In performing the assessment, Pinchin has relied in good faith on information provided by other individuals noted in this report. Pinchin has assumed that the documents, analytical results, records and drawings, and information provided by other individuals noted in this report, including information provided in contacts and personal interviews is factual and accurate. Pinchin accepts no responsibility for any deficiency, misstatement or inaccuracy contained in this report as a result of negligence, omissions, misinterpretations or fraudulent acts of persons interviewed or contacted, or contained in reports that were reviewed, and makes no representation or warranty as to the qualifications of any such persons or the reliability of information or reports provided by them, whether or not such persons were introduced to the Client by Pinchin.
Pinchin did not attempt to identify locations of deposition of mould spores or particles, or minor mould growth that would not exhibit any signs of spotting/staining on building materials.
Assessment of Mould Growth April 7, 2014Loretto Abbey Catholic School, 101 Mason Boulevard, Toronto, OntarioToronto Catholic District School Board Pinchin File: 92372
Pinchin would not be able to identify locations of concealed mould growth within wall cavities and other hidden locations without performing intrusive inspections. The degree of mould growth noted in the report may change with time if water or humidity issues continue or develop after the assessment date(s). Any sources of water infiltration or high humidity must be corrected to prevent the continuation or occurrence of mould growth. Air sampling results (if any) will apply only to the time and conditions of the testing and may not be used to reliably predict conditions on other days.
7.0 CLOSUREShould there be any questions regarding the contents of this report, please contact the project manager, Malissa McGuigan at 416-368-6555 ext. 1906.
1.0 HEALTH EFFECTS OF MOULD GROWTH IN BUILDINGSMould growth is considered by health and safety authorities to be a risk factor for health problems. Health Canada has concluded that living or working in a building with material mould damage is harmful to health.2 Health complaints might include headache, cough, respiratory tract irritation, eye irritation, rash, sinus congestion and allergic responses, such as asthma and hay fever-type symptoms. Not all occupants will react to indoor mould exposure. More severe health effects are rare and typically limited to individuals with suppressed immune systems, infants or persons with high occupational exposure such as farmers and possibly mouldremediation workers.
There are no accepted exposure limits for indoor airborne mould exposure. The accepted practice among leading authorities including Health Canada is the comparison of air samples in areas of concern with reference samples. An acceptable condition is indicated when concentrations of airborne mould spores and particles are not significantly elevated when compared to concentrations in the control samples, and the types of spores do not differ significantly from those present in the reference samples.
2.0 KEY REQUIREMENTS OF REGULATIONS AND GUIDELINES REGARDING MOULD IN BUILDINGS
All Canadian federal and provincial occupational health and safety and public health agencies consider mould growth in buildings to be a risk factor for health problems. Health Canada recommends that mould growth be prevented by appropriate and timely control of moisture sources and that mould growth is removed using established remediation protocols.
Provincial and national occupational health and safety guidelines include, but are not limited to:
Ontario Ministry of Labour: Alert – Mould in Workplace Buildings, Alert 20/12/00, ISSN 1195-5228. Ontario Ministry of Labour, Toronto, ON, (2000).
Manitoba Labour: Guidelines for the Investigation, Assessment, & Remediation of Mould In Workplaces, Workplace Safety and Health Division, Manitoba Labour, Winnipeg, MB, (March 2001).
Government of Alberta, Employment and Immigration: Best Practices Mould at the Work Site, Edmonton, AB, (2009).
WorkSafe BC: Guideline G4.79, Moulds and Indoor Air Quality, Richmond, BC, (June 2002, Revised February 2007).
2 Health Canada: Fungal Contamination in Public Buildings: Health Effects and Investigation Methods. Ottawa, ON, Health Canada (2004)
Assessment of Mould GrowthBackground on Mould Growth and Other Building-Related Hazards Appendix I
CCA: Mould Guidelines for the Canadian Construction Industry, Guide 82, Canadian Construction Association, Ottawa, ON, (2004).
EACO: Mould Abatement Guidelines, Environmental Abatement Council of Ontario, Richmond Hill, ON, (Edition 2, 2010).
Health Canada: Fungal Contamination in Public Buildings: Health Effects and Investigation Methods. Health Canada, Ottawa, ON, (2004).
Health Canada: Residential Indoor Air Quality Guidelines. Health Canada, Ottawa ON, (2007).
Some of the common features of these guidelines include:
Water-damaged materials should be dried within 48 hours to prevent mould growth.
Mould growth in buildings poses a risk of allergic, irritant, infective and possibly toxic responses.
All species of mould growth have the potential to cause adverse health effects and all should be remediated.
Mould growth must be abated as soon as possible after discovery.
Information on the presence of mould growth should be communicated to occupants.
The employer or others responsible for the facility should take necessary steps for interim risk management until mould remediation is completed. These measures might includenotifying the occupants of these findings and advising individuals with symptoms potentially related to mould exposure, and those with known sensitivities to mould to seek medical advice regarding continued occupancy.
Building wide evacuation in cases of confirmed mould growth is not indicated unless there is both widespread fungal contamination and confirmed linked illness. However, occupants with persistent health complaints potentially linked to mould exposure should be advised to seek medical attention, and should be given copies of environmental tests or reports. Persons diagnosed with fungal related disease should not return to the environment until remediation is completed.
Occupants with an underlying health condition posing an increased risk of reacting to mould (e.g., asthma triggered by mould, severe allergies, significantly compromised immune function) should not be present during mould abatement. Such susceptible individuals should be removed from areas adjacent to mould remediation work areas, during the remediation process.
Mould growth should be removed following work practices designed to contain airborne dust and debris, protect the workers performing the removal, and provide a clean
Assessment of Mould GrowthBackground on Mould Growth and Other Building-Related Hazards Appendix I
condition at completion. The rigor of these procedures is dependent on the extent of mould growth present.
Medium and large scale mould abatement work should be performed with the project design and quality assurance assistance of a health and safety professional experienced in mould assessment and remediation. Health Canada recommends that quality assurance inspections be provided in accordance with standard protocols such as those of the American Industrial Hygiene Associations.3
3.0 ASBESTOS BUILDING MATERIALSAsbestos was widely used in the past for the manufacture of building materials. Many buildings built in the 1980’s or earlier, including single family homes, will contain asbestos materials. Common asbestos materials include but are not limited to mechanical insulation, sprayed fireproofing or texture plaster, smooth plaster, ceiling tiles, floor tiles and sheet flooring, and asbestos-cement products. In Ontario, the disturbance of asbestos materials during construction or maintenance is governed by Ontario Regulation 278/05, Designated Substance – Asbestos on Construction Projects and in Buildings and Repair Operations. All construction or maintenance work must comply with the Regulation. This includes work performed for hire in a residence. All Ontario building owners (except for owners of residential buildings with 4 or fewer living units and occupied by the owner) must conduct a survey for asbestos materials and maintain information on the asbestos materials at the building. This information must be disclosed to contractors bidding on or performing work in the building, including work in a private dwelling.
During mould abatement, construction or maintenance workers may have to remove or otherwise disturb asbestos materials. The precautions required for these disturbances will depend on the operation being performed, dustiness (friability) of the material, and the extent of disturbance. The Ontario regulation classifies this work into Type 1, Type 2 or Type 3 operations and assigns work procedures for each class of work.
Asbestos-containing waste must be packaged, labelled, transported and disposed of in accordance with the requirements of the Ontario Ministry of Environment.
3 American Industrial Hygiene Association (AIHA): Assessment, Remediation, and Post-Remediation Verification of Mold in Buildings. Akron OH. AIHA. (2004).
APPENDIX II
PHOTOGRAPHS
Assessment of Mould Growth Appendix II - PhotographsLoretto Abbey Catholic School, 101 Mason Boulevard, Toronto, Ontario April 7, 2014Toronto Catholic District School Board Pinchin File: 92372
