Preliminary Mould Assessment & Scope of WorkPreliminary Mould Assessment & Scope of Work – August 2015 ii | P a g e Suite 4 – Plaster in closet (Approx. 1m 2). Suite 4 – Plaster

Preliminary Mould Assessment & Scope

of Work 159 Forward Avenue

Ottawa, ON

PRELIMINARY MOULD ASSESSMENT & SCOPE OF WORK

159 FORWARD AVENUE

OTTAWA, ONTARIO

Prepared For:

Darren O’Conner

Facility Supervisor

208-2120 Robertson Road

Ottawa, Ontario

K2H 5Z1

Prepared By: Review By:

Michelle Vala Richard Pope, A.Sc.T.

Environmental Technician Senior Project Manager

August 19, 2015

CM3 Project # DPM-1998

City of Ottawa – 159 Forward Avenue, Ottawa Preliminary Mould Assessment & Scope of Work – August 2015

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EXECUTIVE SUMMARY

CM3 Environmental Inc. (CM3) was retained by the City of Ottawa complete a preliminary mould

assessment and provide a scope of work for the removal of mould impacted materials at the City

of Ottawa Family Shelter located at 159 Forward Avenue, in Ottawa, Ontario. The investigation

was completed in order to address concerns of water ingress and mould propagation within the

basement.

The assessment is comprised of a non-intrusive visual investigation, the collection of data for

general air quality characteristics (i.e. Temperature and Relative Humidity), moisture content

measurements, and sampling of suspected mould propagation.

Based on the site reconnaissance the following observations were made:

• Isolated areas of mould growth were observed within the basement and confirmed by

laboratory analysis of bulk and/or lift samples. This is considered unacceptable by

industry standards.

• Elevated moisture content was detected in multiple surfaces through the basement.

Elevated moisture content is a concern as related to potential mould propagation.

• Multiple isolated areas of water damage were observed throughout the basement.

• Air samples collected within the building were found to be qualitatively similar and

quantitatively lower than the background samples collected at the time of the site

visit. This is considered acceptable by industry standards.

• Poor rain water drainage from roof. Water from eavestrough drains adjacent to the

building where water damage is observed.

• Brick mortar beneath the window gaps in the mansard roof are discoloured.

• Water accumulation around the roof for the boiler room.

• Water accumulation around the foundation at the main entrance (south elevation),

and at the north entrance (north elevation).

• Reportedly, drywall joint compound is asbestos-containing material.

Based on the observations, measurements and analytical results from the assessment and the

inherent limitations stated at the end of this report, CM3 recommends the following:

• Remove the mould and moisture impacted building materials in the following

locations:

� Suite 1 – Drywall along North wall (Approx. 10m2);

� Suite 1 – Drywall in closet (Approx. 4m2);

� Suite 1 – Drywall on half wall (Approx. 4m2);

� Suite 1 – Drywall on east wall below 60 meter from floor (Approx. 4m2);

� Suite 1 – Drywall below 60cm on South wall (Approx. 4m2).

� Suite 1 – Sheet vinyl floor (Approx. 20m2)

� Storage – Foundation parging. (Approx 3m2)

� Suite 6 – Plaster on column (Approx. 1m2).


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� Suite 4 – Plaster in closet (Approx. 1m2).

� Suite 4 – Plaster on column (Approx. 1m2).

� NOTE: A detailed scope of remediation is provided in Section 5.0.

• All of the above remedial actions should be completed following the measures and

procedures outlined in the Mould Guidelines for the Canadian Construction Industry.

• The single most effective way to prevent mould contamination within a building is the

prompt removal of any suspected contaminated material and repairing the structural

components of the building and mechanical failures that lead to moisture

accumulation or water infiltration. Emphasis should be placed on preventing

contamination through proper maintenance and prompt repair of any water-damaged

areas. In all situations, the underlying cause of water accumulation must be rectified

or the problem will reoccur.


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TABLE OF CONTENTS

1.0 BACKGROUND ............................................................................................................... 1

2.0 HEALTH EFFECTS, REGULATORY REQUIREMENTS AND GUIDELINES ................... 1

3.0 METHODOLOGY ............................................................................................................ 2

3.1Visual Assessment ......................................................................................................... 2

3.2Temperature and Humidity Readings ............................................................................. 2

3.3Moisture Content Readings of Building Materials ........................................................... 3

3.4Sampling Methodology ................................................................................................... 3

4.0 FINDINGS AND DISCUSSION ........................................................................................ 4

4.1Visual Assessment ......................................................................................................... 4

4.2Temperature & Humidity ................................................................................................ 4

4.3Moisture Measurements ................................................................................................. 4

4.4Mould Sampling ............................................................................................................. 5

5.0 CONCLUSIONS .............................................................................................................. 5

6.0 RECOMMENDATIONS (SCOPE OF MOULD REMEDIATION) ....................................... 6

6.1Level I Remediation ....................................................................................................... 6

6.2Level III Remediation (Suite 1) ....................................................................................... 7

7.0 CLOSURE ....................................................................................................................... 9

LIST OF APPENDICES

APPENDIX A: Laboratory Analytical Reports

APPENDIX B: Site Plan


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1.0 BACKGROUND

CM3 Environmental Inc. (CM3) was retained by the City of Ottawa to complete a preliminary

mould assessment and provide a scope of work for the removal of mould impacted materials at

the family shelter located at 159 Forward Avenue, in Ottawa, Ontario. The investigation was

completed to address concerns of building envelope failures, moisture ingress, and potential

mould propagation.

The assessment is comprised of a non-intrusive visual investigation, the collection of data for

general air quality characteristics (i.e. Temperature and Relative Humidity), moisture content

measurements, and sampling of suspected mould propagation.

The fieldwork was conducted on August 17th and 18th, 2015 by Mr. Richard Pope and Ms.

Michelle Vala, of CM3. CM3 was responsible for the overall project parameters including:

sample collection, personnel coordination, supervision, and reporting.

This assessment has been performed to determine the extent of mould growth and water

damage present within the basement in order to provide recommendations for appropriate

remedial actions and/or further investigative strategies, if necessary. Assessing potential health

risks to potential building occupants was beyond the scope of our investigation. Any decisions

regarding health risks posed by indoor mould growth and decisions to remove or return people

to affected areas should be based on a medical assessment made by a practioner who is

trained in occupational / environmental medicine or a related specialty and are knowledgeable

about these types of exposures.

This report summarizes results of our visual assessment, bulk sampling, moisture

measurements and temperature and humidity readings.

The subject facility is a multi-story building serving as an emergency housing shelter with office spaces, washrooms, common kitchen, etc. located at 159 Forward Avenue, in Ottawa, Ontario. The exterior of the building is masonry brick with a concrete foundation. The roof of the building is a mansard style with gaps in the overhang for windows.

The building is finished with drywall and plaster finishes present on all three levels. The building is heated by a perimeter hot water heating system. Cooling is provided to some areas with window air conditioners, and split fan systems. Common areas such as the hallways are mechanically ventilated. The tenant spaces accessed in the basement did not have mechanical ventilation. The outdoor air intake is located on the east side of the building.

2.0 HEALTH EFFECTS, REGULATORY REQUIREMENTS AND GUIDELINES

Mould spores are present in all indoor environments and cannot be completely eliminated. Cellulose-based building materials provide a nutrient base for many mould species; however, moulds generally do not grow unless an adequate amount of moisture is present.


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Since there are no clear regulatory limits for determining the exposure to moulds, there is therefore no numerical guideline for determining safe or unsafe concentrations of mould contamination. The guidelines listed below could be used to evaluate our visual inspection and sampling results:

• “Fungal Contamination in Public Buildings: Health Effects and Investigation Method” Health Canada, 2004.

• “Indoor Air Quality in Office Buildings: A Technical Guide” Health Canada, 2004.

• “Mould Guidelines for the Canadian Construction Industry” Canadian Construction Association.

• “S-500 Standard and Reference Guide for Professional Water Damage Restoration”, Institute of Inspection Cleaning and Restoration Certification (IICRC).

• “S-520 Standard and Reference Guide for Professional Mold Remediation”, IICRC;

• “Assessment, Cleaning, and Restoration of HVAC Systems”, National Air Duct Cleaners Association.

• “Bioaerosols Assessment and Control”, American Conference of Governmental Industrial Hygienists, ACGIH, 1999.

• “Field Guide for the Determination of Biological Contaminants in Environmental Samples”, American Industrial Hygiene Association, AIHA.

Currently, the potential or degree of exposure to moulds has been based on the quantity of moulds identified, assuming that potential exposure increases with an increase in overall mould concentrations.

NOTE: With respect to exposures to airborne concentrations of common environmental moulds and the air sampling results reported from the day of any assessments, only a physician who is familiar with symptoms that are typically associated with environmental moulds should render an opinion regarding exposure and risk.

3.0 METHODOLOGY

3.1 Visual Assessment

An inspection of all surfaces of the interior of the subject area was completed by CM3 to identify areas where apparent mould was most likely to proliferate (i.e., areas where water damage/staining was visible on building material surfaces). Destructive or intrusive assessments not were completed as part of this initiative. Material observed with black staining and/or a textured and discoloured appearance is described as apparent or suspect mould propagation, unless otherwise confirmed by laboratory analysis (i.e. bulk or lift sampling).

3.2 Temperature and Humidity Readings

Temperature and relative humidity readings (%RH) were collected from a direct read Extech

RH300 digital psychrometer. This device measures humidity, air temperature, dew point

temperature, and wet bulb temperature. For the purposes of this investigation only %RH and

temperature were recorded, however if required dew point and wet bulb temperatures were

evaluated to further determine the effects of the thermal conditions as it relates to mould

propagation.


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3.3 Moisture Content Readings of Building Materials

In order to determine the moisture content of building materials present within the residence,

moisture content (MC) readings were taken using a Delmhorst Tech Check Plus Moisture

Meter. The unit is designed to detect moisture content in building materials using two modes of

moisture measurement. For the detection of moisture beneath surfaces or from hard surfaces

such as concrete, ceramics, masonry, and plaster, the instrument is operated in Scan Mode.

This mode uses radio frequency technology to give instant relative measurements of moisture.

The secondary mode, Pin Mode, uses pin-type conductivity electrodes to give precise wood

moisture or drywall moisture equivalent measurements from non-conductive materials, such as

wood, drywall, and insulating materials.

Results of MC readings were used in conjunction with our visual assessment to further delineate

the extent of water damage. Elevated readings indicate recent or chronic water damage. In

addition, elevated MC readings indicate the potential for hidden mould growth on the unexposed

side of the material being measured. Elevated moisture content is a concern as related to

potential mould propagation.

3.4 Sampling Methodology

One (1) tape-lift sample was collected for the identification of mould from representative stained

and/or discoloured sections of suspect materials in the subject building. The tape-lift sample

was collected using clear one-sided tape by firmly pressing the tape on the surface, then

removing, and sticking it to a pre-cleaned plain microscopy slide (25x75x1mm). Samples were

placed in sealed plastic sampling bags and labelled accordingly.

One (1) bulk sample was collected for the identification of mould from representative stained

and/or discoloured sections of suspect materials in the subject building. The samples were

collected using an X-Acto knife an approximately 30x30x1mm sample of drywall paper was

removed. Samples were placed in a sealed plastic sampling bag and labelled accordingly.

Five (5) Air samples were collected with high volume air sampling pumps calibrated to collect 15

Litres (L) of air per minute. Samples were timed for 5 minutes to yield 75L air volume, for a

moderate traffic environment. This method allows for collection of a wide range of airborne

aerosols including both viable and non-viable mould spores.

Outdoor reference samples were collected for comparative purposes. Outdoor samples were

collected on the east side of the facility at the outdoor air intake grill. Samples were collected at

least 24hrs after a rainfall event.

All samples were submitted under chain of custody to an American Industrial Hygiene

Association (AIHA) accredited third party laboratory for analysis by microscopic examination.


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4.0 FINDINGS AND DISCUSSION

4.1 Visual Assessment

During the preliminary site investigation the following observations were made:

• Dark discolorations of suspect mould growth were observed in the following locations:

� Basement, Suite 1 – Along the bottom of drywall in closet (Approx. 1m2);

� Basement, Suite 1 – Along the base of the drywall on North wall (Approx. 2m2);

� Basement, Suite 1 – At the base of the half wall in the centre of the suite. (Approx.

2m2); and,

� Basement, Suite 1 – Under the sheet vinyl flooring in the closet (Approx. 1m2).

• Water damaged building materials were observed in the following locations:

� Basement, Suite 1 – Drywall damage on south wall near entrance (Approx. <1m2);

� Basement, Storage Room – Moisture impacts on north and west concrete walls

(Approx. 3m2);

� Basement, Suite 6 – Plaster damage on column at east window next to closet (Approx.

1m2);

� Basement, Mechanical Room – Water staining on duct insulation (Approx. <1m2);

� Basement, Mechanical Room – Moisture impacts on parging cement in southeast area

(Approx. 2m2);

� Basement, Hydro Room – Moisture impacts on south and west concrete walls (Approx.

2m2);

� Basement, Suite 4 – Plaster damage in closet (Approx. 1m2); and,

� Basement, Suite 4 – Water damage on northwest column next to window (Approx.

<1m2).

• Water accumulation was observed on the floor next to the refrigerator in Suite 1.

4.2 Temperature & Humidity

At the time of the site visit it was sunny, and humid. The temperature reading was

approximately 27.4ºC on the exterior of the building during the morning. Readings within the

residence were approximately 70.4%RH at 24.9 ºC. According to industry standards, a relative

humidity reading of above 60% is a concern as related to potential mould growth.

4.3 Moisture Measurements

Moisture mapping of building material surfaces was conducted during the site visit using a

Delmhorst moisture meter. Moisture readings were collected systematically throughout the

building, focusing on areas with visual moisture impacts.

According to the moisture meter elevated moisture was detected in the following locations:

• Basement, Suite 1– Drywall along North wall starting at the ceiling next to closet and

finishing at the floor of the East wall (Approx. 5m2);

• Basement, Suite 1 – Drywall in closet (Approx. 4m2);


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• Basement, Suite 1 – Drywall on half wall (Approx. 4m2);

• Basement, Suite 1 – Drywall on East wall below 1 meter from floor (Approx. 4m2);

• Basement, Suite 1 – Drywall below 1 meter on South wall (Approx. 4m2);

• Basement, Electrical Room – Dampness on West concrete wall (Approx. 2m2);

• Basement, Suite 4 – Elevated moisture content in plaster and drywall in closet (Approx.

2m2);

• Basement, Suite 4 – Elevated moisture content on North West window column (Approx.

<1m2).

Elevated moisture content in these areas is considered a concern as related to potential mould

growth.

4.4 Mould Sampling

Two (2) surface samples were collected from interior finishes for direct microscopic analysis of mould. One bulk sample (BS-01) and one lift sample (TS-01).

Bulk sample BS-01 was collected from the west side of the half wall in Suite 1. Extensive scolpulariopsis mould spore debris, and moderate aspergillus/penecillium-like spore, and cladosporium debris was recovered by laboratory analysis.

Tape-lift sample TS-01 was collected from the West side of the half wall in Suite 1. Extensive aspergillus/penecillium-like spore, and ulocladium spore debris was recovered by laboratory analysis. High relative amounts of bacteria were also recovered.

The mould spores recovered from the lift and bulk samples confirm the existence of mould propagation in these areas. Based upon industry standards this is considered unacceptable.

The analytical results from the air sampling within the building indicated that the airborne mould levels are consistent with the outdoor reference samples at the time of the site visit. The samples collected are quantitatively lower and qualitatively similar to the outdoor reference samples. This is considered acceptable by industry standards.

The analytical results are attached in Appendix B.

5.0 CONCLUSIONS

The single most effective way to prevent mould contamination within a building is the prompt removal of any suspected contaminated material and repairing the structural components of the building and mechanical failures that lead to moisture accumulation or water infiltration. Emphasis should be placed on preventing contamination through proper maintenance and prompt repair of any water-damaged areas. In all situations, the underlying cause of water accumulation must be rectified or the problem will reoccur.

Based on the observations, measurements, sampling and the inherent limitations stated at the

end of this report, the following conclusions are provided:

• Multiple isolated areas of mould growth were observed in Suite 1 and confirmed by

laboratory analysis of bulk and lift samples.


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• Elevated moisture content was detected in multiple surfaces. Elevated moisture

content is a concern as related to potential mould propagation.

• Multiple isolated areas of water damage were observed throughout the building.

• Due to the historical evidence of moisture intrusion, the quantity of mould and

water damaged observed throughout the building it is likely that additional mould

propagation exists within concealed areas such as wall cavities and ceiling spaces.

• Reportedly, asbestos containing drywall joint compound is present in the

basement.

6.0 RECOMMENDATIONS (SCOPE OF MOULD REMEDIATION)

Considering the confirmation of mould growth on building materials it is recommended that mould abatement protocols be completed in the basement, according to the “Mould Guidelines for the Canadian Construction Industry” Canadian Construction Association, 2004 (CCA-82). Further, areas with visible water damage and elevated moisture content should be removed in order to investigate the source of moisture. Due to the nature of mould and moisture impacts observed in the basement, it is recommended that a phased approach be adopted, to include Level I (<1m2) and Level III (>10m2) mould abatement measures and procedures. In addition, due to the presence of asbestos-containing drywall joint compound (chrysotile asbestos) asbestos abatement measures and procedures should be implemented, as per Ontario Regulation 278/05 “Regulation Respecting Asbestos on Construction Projects and in Buildings and Repair Operations” made under the Ontario Occupational Health and Safety Act. It is recommended that the following be performed by a qualified environmental abatement contractor, to remove the mould growth within the basement and to expose the foundation wall for inspection:

6.1 Level I Remediation

Level I measures and procedures should be implemented to remove the following building

materials:

• Storage – Foundation parging. (Approx 3m2)

• Suite 6 – Plaster on column (Approx. 1m2).

• Suite 4 – Plaster in closet (Approx. 1m2).

• Suite 4 – Plaster on column (Approx. 1m2).

The site plan presented in Appendix B are prepared to assist in delineation of the impacted

areas above.

The following Level I measures and procedures are prescribed for the aforementioned areas.

• Occupants should not be present within the remediated area.

• Workers performing Level I mould remediation shall wear a half-face piece air-purifying respirator fitted with replaceable filters (N95 minimum) or a filtering facepiece respirator (N95 minimum) and suitable eye protection. Filters shall be disposed of daily due to the potential growth of mould spores on damp filter media.

• Workers shall wear disposable coveralls and dust-impermeable gloves appropriate to the work being performed, and water-impermeable gloves when applying detergent or disinfectant. Workers can wear disposable boot covers or they should clean their boots before leaving the remediation area. Refer to the Material Safety Data Sheet (MSDS) for the selection of appropriate detergents, disinfectants, and gloves.


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• Turn off HVAC systems and seal overall system openings (e.g., diffusers and return air openings) within or immediately adjacent to the work area.

• Movable non-porous items within the work area shall be cleaned with a HEPA vacuum, followed by a suitable cleaning solution, and then removed from the work site. Fixed non-porous items within the work area shall be first cleaned by vacuuming and wet wiping, and then sealed under polyethylene sheeting, taped in place during remediation work.

• Wherever possible, place a drop sheet below the materials to be removed.

• Do not use compressed air mechanical devices to clean up or remove contamination.

• Dust suppression methods should be used where possible, prior to disturbing mouldy materials. Tape a section of plastic sheeting or duct tape over the material, or, lightly mist the mouldy material with water. Do not dry sweep or dry whisk. Power tools fitted with dust collection bags will reduce airborne particulates.

• Remove any porous substrate materials (ceiling tiles, drywall, etc.) well beyond the immediate areas of visible contamination; the minimum recommended distance is 30 cm in all directions.

• After bulk removal, clean all exposed surfaces within the work area. Begin by cleaning with a HEPA vacuum and appropriate tools. Do not use any other type of vacuum. If a HEPA vacuum is not available, wet wiping is adequate for Level I work.

• Remove all waste created by the remediation work, including, but not limited to, building debris, disposable coveralls, respirator cartridges, and plastic sheeting. Seal all waste into 6 mil nominal disposal bags. Wet wipe or clean the bags with a HEPA vacuum and finally double-bag in a second clean 6 mil nominal bag or suitable sealed container.

• Clean all equipment used in the remediation work (e.g., vacuum cleaner, knives, saws) using a HEPA vacuum and by wet wiping. Equipment that cannot be readily cleaned (e.g. vacuum hose or wire brushes) shall be HEPA vacuumed and sealed in 6 mil polyethylene bags or suitable sealed container before removal from the work area.

• Dispose of the waste material in compliance with local, provincial, and federal regulations.

• Wash face and hands, and clean and maintain respirator after completion of mould abatement.

• Leave all areas dry and visibly free from contamination and debris, and ensure that surfaces are adequately dry prior to installation of new materials.

• Upon clearance testing and approval by The Consultant reinstate the areas of demolition and/or abatement to match the existing interior finishes.

6.2 Level III Remediation (Suite 1)

Due to overall quantity of mould observed, and moisture impacted in Suite 1 Level III (Large Scale – areas >10m2) remedial actions are recommended:

• For Level III work areas, ensure that a two-stage containment is set up, and barriers are in constructed surrounding the area requiring removal or reparations. The containment areas should be under negative pressure, by use of a properly sized HEPA filter equipped negative air unit vented to the outdoors, to prevent migration of spores outside the containment areas.

• Isolate the work area from adjacent spaces using temporary hoarding, tape, and polyethylene sheeting, etc. Cover all walls that form part of the enclosure perimeter with


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one layer of polyethylene sheeting, taped in place. Where temporary walls form part of the enclosure perimeter, provide two separately sealed layers of polyethylene sheeting, one on each side of the temporary wall.

• Provide a Worker Decontamination Facility, to include a Clean Change Room and a Dirty Change Room. Install flap doors at each opening into and within the Decontamination Facility. Provide a wash station consisting of, at a minimum, a basin, fresh water, soap, and toweling in the Clean Change Room. Consider providing a shower for worker comfort. Construct and arrange the worker decontamination rooms in such a way that everyone entering or leaving the work area must pass through each room of the decontamination unit.

• Provide a negative pressure within the enclosure, by using portable, HEPA-filtered exhaust fans (negative air machines). Provide a minimum negative pressure of 5 Pascals (0.02 inches of water column) and a minimum of four air changes per hour. Where possible, discharge the filtered air outside the building and away from people. If venting to the outdoors is not possible, then venting outside of the containment is recommended only if the HEPA unit is DOP tested/certified to do so. It is also recommended that outdoor makeup air be supplied to the containments through slightly opened windows or doors, if possible.

• Workers shall wear a full-facepiece air purifying respirator fitted with P100 filters, or preferably, a tight-fitting positive-pressure full-facepiece Powered Air Purifying Respirator with high-efficiency particulate filters.

• Workers shall wear impermeable gloves and full-body dust-impervious coveralls, with attached hoods, tightly secured with tape at the ankles and wrists.

• Workers shall wear disposable boot covers or separate work boots that can be effectively cleaned with a HEPA vacuum or wiped clean prior to removal from the work area.

• No persons should enter the containment areas without proper personal protective equipment (PPE) according the guidelines noted below. Proper signage should be installed to indicate this.

• Confirm that all building materials be removed until the extents of all mould impacted water-damaged materials have been reached, leaving the wall framework in place.

• The following impacted materials should be removed during the remediation: � Basement, Suite 1 – Drywall along north wall.

� Drywall in closet.

� Drywall on half wall.

� Drywall on east wall below 120cm from floor.

� Drywall on south wall below 60cm.

� Sheet vinyl floor.

� The site plan presented in Appendix B are prepared to assist in delineation of

the impacted areas above.

• Upon removal of drywall finishes CM3 should be contacted to further assess the exposed wall cavity.

• Demolition should be completed with precautions to minimize particulate aerosolization. • All building material debris should be double bagged and sealed in a minimum of 3

millimeter polyethylene bags; 6 mil. is preferable.

• The removed building materials should be first placed into a single bag which should then be placed into the dirty room, and damp wiped, a worker from the outside should


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then take that bag and place it into a clean new bag while in the clean room, that bag should then be taken out of the containment and disposed of.

• The containment areas should be kept relatively clean throughout the demolition.

• At the end of each work day a general cleaning should be completed.

• Confirm that if a structural component must be removed due to mould impacts, please contact CM3 prior so that a structural engineer can assess the on-site conditions and recommend an appropriate course of action.

• Maintain proper humidity levels as per S500, S520 Guidelines.

• Ensure all remaining non-porous, and semi porous building materials be dried and cleaned according to standard practices listed below.

• Once demolition is complete and the containments are cleaned, the containments may then be air scrubbed internally, with minimal negative pressure remaining.

• Application of an anti-microbial coating may be required, depending on the condition of the foundation. The consultant to provide recommendations based on observations.

• Once the above is complete, the areas should be inspected by CM3 and the qualified mould remediation contractor, prior to the final cleaning and before the collection of clearance samples.

• Once the above is complete, CM3 is to be contacted to complete post remediation sampling for mould to record successful project completion and that acceptable background concentrations of airborne mould have been achieved.

• Upon clearance testing and approval by The Consultant reinstate the areas of demolition and/or abatement to match the existing interior finishes.

All of the mould abatement work is to be completed by a qualified mould remediation contractor, as per standard practices (Mould Guideline for the Canadian Construction Industry CCA-82, and the IICRC S500/S520 Guidelines).

NOTE: Due to the possibility of hidden mould in wall cavities and unexposed materials, the scope of work may change if additional mould or water impacted materials are discovered during the remedial abatement. Work should proceed in an investigative manner.

7.0 CLOSURE

The conclusions presented in this report are professional opinions based on data described in

this report. These opinions have been arrived at in accordance with currently accepted industry

and engineering standards and practices applicable to this location, and are subject to the

following inherent limitations:

1. CM3 derived the data in this report primarily from visual inspections, examination of

records in the public domain, and interviews with individuals having information about

the Site. The passage of time, manifestation of latent conditions, or occurrence of future

events may require further study at the site, analysis of the data, and re-evaluation of the

findings, observations, and conclusions in the report.

2. The data reported and the findings, observations, and conclusions expressed in the

report are limited by the Scope of Work and represent conditions present on that date or

time.


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3. Because of the limitations stated above, the findings, observations, and conclusions

expressed by CM3 in this report are not, nor should not be, considered an opinion

concerning the compliance of any past or present owner or operator of the Site with any

federal, provincial, or municipal law or regulation.

4. No warranty or guarantee, whether expressed or implied, is made with respect to the

data reported of findings, observations, and conclusions that are based solely upon site

conditions in existence at the time of investigation.

5. CM3 reports present professional opinions and findings of a scientific and technical

nature. The report shall not be construed to offer legal opinion or representations as to

the requirements of, nor compliance with, environmental laws, rules, regulations, or

policies of federal, provincial, or local government agencies. Any use of the report

constitutes acceptance of the limits of CM3’s liability. CM3's liability extends only to its

client and not to any other parties who may obtain the report.

6. The conclusions presented in this report are professional opinions based on data

described in this report. They are intended only for the purpose, site location, and

project indicated. This report is not a definitive study of contamination at the site and

should not be interpreted as such. A limited evaluation of the building’s air quality was

performed as part of this investigation. No sampling or chemical analyses of structural

materials or other media was completed as part of this study unless explicitly stated.

APPENDIX A

Laboratory Analytical Reports

Preliminary Mould Assessment & Scope of Work

159 Forward Avenue

Ottawa, ON

2120 Robertson Road, Suite 208

Ottawa, ON

K2H 5Z1

21-Aug-15

Tel: (613) 820-4343

Fax: (613) 820-7695

Attn: Richard Pope

Re: DPM-1998 Paracel Report No.: 1534121

CM3 Environmental Inc.

Please find attached the final assessment of sample(s) received on 18-Aug-15 and analyzed in our Ottawa West

Lab location. Information on common indoor/outdoor fungi may be found on our website at the link below;

however, interpretation of the results is the responsibility of the client.

Paracel Species Ecology List

Any use of these test results implies your agreement that our total liability in connection with this work,

however arising, shall be limited to the amount paid by you for this work, and that our employees or agents

shall not under any circumstances be liable to you in connection with this work. This report may not be

reproduced, except in full, without the written approval of the laboratory. This report is valid only with an

authorized signature. All samples and related slides/extracts are stored for three months from the time the

final analytical report was issued, unless otherwise requested in writing by the client.

Laboratory Director - Microbiology

Heather S.H. McGregor, BSc

Sincerely,

If you have any questions or comments regarding the enclosed information, please feel free to contact us any

Page 1 of 3

http://www.paracellabs.com/files/Species_Ecology_List.pdf

Client: Attn:

Project:

Paracel Report No.:

Received Date:

Report Date:

Ottawa, ON K2H 5Z1

18-Aug-15

Tel: (613) 820-4343

Fax: (613) 820-7695

21-Aug-15

Richard Pope2120 Robertson Road, Suite 208

DPM-1998

1534121


Microscopic - Air-O-Cell

Paracel I.D. Media Expiry

Date

Background

Debris**

% of

Trace

LOD

(Cts/m³)

Sample

Volume(L)

Total

Cts/m³

Propagule Identification Cts/m³ % of

Total

Counts*Sample

Date 35 38Low 8051534121-01 Client ID: AS-01/Basement Unit 12016/0618-Aug-15 75

537 67 14basidiospores

192 24 5Cladosporium spores

77 10 2Aspergillus/Penicillium-like spores

35 38Low 5751534121-02 Client ID: AS-02/Basement Hall2016/0618-Aug-15 75


77 13 2ascospores

35 38Low 11501534121-03 Client ID: AS-03/Third Floor Hall2016/0618-Aug-15 75



24 55Low 180711534121-04 Client ID: AS-04/Rear, Outside2016/0618-Aug-15 75


3724 21 68Cladosporium spores

876 5 16ascospores

219 1 4Alternaria spores


164 1 3pigmented mycelial fragments

110 1 2Drech., Exsero., Helminth., Bipol. spp.

55 <1 1Cercospora-like spores

55 <1 1pollen

55 <1 1unidentified spore

NA NA TraceEpicoccum spores

*Counts - Definitions:

Trace = 2 propagules or less noted per trace

Low = occupying < 10% of microscopic field

Moderate = 11-30% of microscopic field

**Background Debris - Definitions:



High = > 31% of microscopic field

ND - No fungal propagules detected, below limit of detection (LOD).

NA - Not applicable; calculations cannot be performed on non-numerical data.

Page 2 of 3

Client: Attn:

Project:

Paracel Report No.:

Received Date:

Report Date:

Ottawa, ON K2H 5Z1

18-Aug-15

Tel: (613) 820-4343

Fax: (613) 820-7695

21-Aug-15

Richard Pope2120 Robertson Road, Suite 208

DPM-1998

1534121


Microscopic - Tape Lift

Sample Date Propagule Summary Relative Amount*Background Debris**Sample I.D.

Low Client Sample Name:TS-01/Half Wall Drywall1534121-05 18-Aug-15

Aspergillus/Penicillium-like spores High

bacteria High

Ulocladium spores High

pigmented mycelial fragments Moderate

Scopulariopsis spores Moderate

*Relative Amount:

Trace = 2 propagules or less noted per mm² of tape surface

Low = 2-10 propagules noted per mm²

Moderate = 11-100 propagules noted per mm²





ND - No fungal propagules detected.


Microscopic - Bulk

Sample I.D. Background Debris** Propagule Summary Relative Amount*Sample Date

Moderate Client Sample Name:BS-01/Closet Wall, Suite 1 Drywall Paper1534121-06 18-Aug-15

HighScopulariopsis spores

ModerateAspergillus/Penicillium-like spores

ModerateCladosporium spores

*Relative Amount:

Trace = 2 propagules or less on entire slide

Low = < than 10 propagules noted per mm² of slide surface

Moderate = 11-100 propagules noted per mm² of slide surface





ND - No fungal propagules detected.


Page 3 of 3

APPENDIX B

Site Plan

Preliminary Mould Assessment & Scope of Work

159 Forward Avenue

Ottawa, ON

Documents

Preliminary Mould Assessment & Scope of WorkPreliminary Mould Assessment & Scope of Work – August 2015 ii | P a g e Suite 4 – Plaster in closet (Approx. 1m 2). Suite 4 – Plaster