Rinzo Renthlei, EIT Project Engineer Linda Hollingsworth, PE Department Manager Christopher M. Hundley Principal Consultant Report of Fungal and Indoor Air Quality (IAQ) Assessment Douglas MacArthur Swing Space 4643 Taney Avenue Alexandria, Virginia 22304 Prepared for Alexandria City Public Schools (ACPS) 1340 Braddock Place, 6th Floor Alexandria, VA 22314 Prepared by Professional Service Industries, Inc. 2930 Eskridge Road Fairfax, Virginia 22031 November 13, 2020 PSI Project Number 04481599
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Rinzo Renthlei, EIT Project Engineer
Linda Hollingsworth, PE Department Manager
Christopher M. Hundley Principal Consultant
Report of Fungal and Indoor Air Quality (IAQ) Assessment
Douglas MacArthur Swing Space 4643 Taney Avenue
Alexandria, Virginia 22304
Prepared for
Alexandria City Public Schools (ACPS) 1340 Braddock Place, 6th Floor
Alexandria, VA 22314
Prepared by
Professional Service Industries, Inc. 2930 Eskridge Road
Fairfax, Virginia 22031
November 13, 2020
PSI Project Number 04481599
Intertek-PSI 2930 Eskridge Road Fairfax, VA 22031
Tel 703.698.9300 Fax 703.698.4414 intertek.com/building
November 13, 2020
Alexandria City Public Schools 1340 Braddock Place, 6th Floor Alexandria, VA 22314
Attn: Mr. John Finnigan Acting Director of Educational Facilities Phone: (703) 619 8297 e-mail: [email protected]
Subject: Fungal and Indoor Air Quality (IAQ) Assessment Douglas MacArthur Swing Space 4643 Taney Avenue Alexandria, Virginia 22304 PSI Project Number: 04481599
Dear Mr. Finnigan:
Professional Service Industries, Inc. (PSI) performed Mold Assessment at the above referenced property. PSI provided its services in general accordance with the requirements contained in PSI’s proposal no. 0448-324502 dated October 15, 2020.
PSI thanks you for choosing us as your consultant for this project. Please contact us at (703) 698-9300 if you have any questions or we may be of further service.
Respectfully Submitted,
PROFESSIONAL SERVICE INDUSTRIES, INC.
Linda Hollingsworth, PE Christopher M. Hundley Department Manager Principal Consultant
5 CONCLUSIONS AND RECOMMENDATIONS ................................................................................. 10 6 WARRANTY .............................................................................................................................. 11
6.1 FUNGAL ASSESSMENT .......................................................................................................... 11 6.2 USE BY THIRD PARTIES ......................................................................................................... 11 6.3 UNIDENTIFIABLE CONDITIONS ............................................................................................. 11
LIST OF APPENDICES
APPENDIX A – LABORATORY MOLD SPORE TRAP REPORT AND SAMPLE CHAIN OF CUSTODY APPENDIX B – LABORATORY SURFACE FUNGI TAPE LIFT REPORT AND SAMPLE CHAIN OF CUSTODY APPENDIX C – SAMPLE LOCATION MAP APPENDIX D – PHOTOLOG
Project Number: 04481599 Fungal & IAQ Assessment Douglas MacArthur, ACPS
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1 EXECUTIVE SUMMARY
Professional Service Industries, Inc. (PSI), an Intertek Company, conducted a Fungal (Mold) and Indoor Air Quality (IAQ) Assessment within Douglas MacArthur Swing Space located at 4643 Taney Avenue in Alexandria, Virginia. The assessment was conducted to provide data on IAQ conditions within the specified areas of the building as it relates to the recognition, evaluation, and control of mold and moisture, and other parameters. PSI’s Mr. Rinzova Renthlei conducted the assessment on November 3, 2020 at the above referenced property.
This assessment was conducted at the request of Alexandria City Public Schools (ACPS).
The scope of the assessment included a walk-through inspection, interviews of the site contact to obtain information relative to specific fungal and/or moisture issues, and sample collection; measurements of temperature, relative humidity in the selected areas; sampling for total airborne fungal spores utilizing a high-volume pump with an Air-O-Cell™ spore trap cassettes for the collection of bioaerosol (i.e. mold) spores and surface sampling of suspected mold growth.
Findings / Conclusions
Based on methodologies described in this report, this assessment identified evidence of conditions conducive to interior fungal amplification. A summary of the assessment findings and sampling results are listed below.
Building Walk-thru / Observations
Visible mold was noted in Classroom 1058. Stains and evidence of moisture on ceiling tiles were noted in the ceiling tiles of Classrooms 1058, 1061 and hallway outside Classroom 1061. The moisture stained ceiling tile is evidence of a water intrusion issue.
Temperature and Relative Humidity
The temperature and relative humidity indoors were within ASHRAE acceptable limits or ranges. However, it should be noted that relative humidity was moderately higher in classrooms 1058, 1059, 1060, 1061 and 1061 as compared to the rest of the indoor assessed areas.
Airborne Mold Spores
The results of the air sampling indicated the presence of significantly elevated indoor airborne concentrations of Penicillium/Aspergillus Group fungal spores in classrooms 1058, 1059, 1061 and the cafeteria.
Surface Tape Lift for Mold
The results of surface fungi tape lift sampling identified the target mold species Cladosporium and Penicillium/ Aspergillus Group at heavy concentrations in Classroom 1058.
This summary does not contain all the information presented in the full report. The report should be read in its entirety to obtain a more complete understanding of the information provided and to aid in any decisions made or actions taken based on this information.
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2 INTRODUCTION
A Mold and IAQ assessment were conducted by PSI at Douglas MacArthur Swing Space located at 4643 Taney Avenue, Alexandria, Virginia. This assessment was conducted at the request of the client and was generally conducted in two phases as follows:
Phase 1 – Inspection and Data Collection - A preliminary evaluation was conducted by PSI which included a walk-through inspection, interview with the site contact providing information relative to specific fungal and/or moisture issues, and sample collection. Total airborne fungal spores were sampled utilizing a high-volume pump with an Air-O-Cell™ spore trap cassettes for the collection of bioaerosol (i.e. mold) spores. Suspect mold growth on building surfaces were tested using tape lift methodologies. Air and surface sampling methodology is presented in Section 3.
Phase 2 - Project Report - This report outlines the assessment findings based on the interviews, testing results and field observations. The report also discusses other observations concerning the workplace as they impacted the sampling events. This report includes a discussion of sampling methodology, locations, analytical methods, results, conclusions, and recommendations for remedial action.
2.1 AUTHORIZATION
Authorization to perform the assessment was provided by Mr. David F. Banks, Director of Procurement, of ACPS in the form of a signed Rider Agreement (ACPS Agreement No. 2020103) dated May 7, 2020. The work was performed in accordance with the scope and terms and conditions contained in PSI’s proposal number 0448-324502 dated October 15, 2020.
2.2 SITE DESCRIPTION
The subject property is located at 4643 Taney Avenue in Alexandria, Virginia and is an active public school. PSI understands the building consists of approximately 62,400 square feet (sf) of finished above grade one-story building.
2.3 PROJECT BACKGROUND
ACPS requested a Mold and IAQ Assessment to determine the absence or presence of potential fungal and air quality issues.
2.4 PURPOSE AND SCOPE
The purpose of this scope of services is to provide data on the conditions as it relates to the recognition, evaluation, and control of mold and IAQ within the subject property building. This assessment will provide data regarding potential fungal amplification and IAQ issues.
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3 ASSESSMENT ACTIVITIES
Field investigation and sampling activities were conducted on November 3, 2020. Prior to the commencement of assessment activities, management staff of ACPS provided site information and assisted in providing access to the facility.
3.1 WALK-THROUGH EVALUATION
The walk-through evaluation included a visual assessment of all the accessible compartments Douglas MacArthur Swing Space.
3.2 INTERVIEWS
PSI conducted interviews with ACPS Director of Safety & Security Services, Mr. John Contreras for the subject property building. According to the site contact, mold and past water intrusion issues have been observed in classrooms (CR) 1058, 1059, 1060 and 1061 of the subject property.
3.3 TEMPERATURE AND RELATIVE HUMIDITY MEASUREMENTS
Short-term, spot check measurements were made for temperature and relative humidity in select locations of the subject property. Areas were investigated using Extech® Humidity/Temperature Pen 445580.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) provides guidance on comfort ranges for temperature depending on season. These numbers generally range from 68 to 76 degrees Fahrenheit (o F) during the winter months and from 72 to 80o F during the summer months. The ranges are dependent on available humidity with the lower end of the temperature range coinciding with the higher humidity’s.
Measurement and recording of the relative humidity are used to indicate comfort level parameters associated with the indoor air. Overly dry as well as overly humid conditions are both indicators of air quality provided by the heating, ventilation, and air conditioning (HVAC) system. High humidity levels can cause concern regarding the potential for growth of fungi within the facility. ASHRAE Standard 62.1-2013, "Ventilation for Acceptable Indoor Air Quality", requires that relative humidity levels be designed to be limited to 65% or less for mechanical systems with dehumidification capability. For other mechanical system types or where spaces are not served by mechanical systems, Standard 62.1 has no humidity limitations. The U.S. Occupational Safety and Health Administration (OSHA) recommends humidity control in the range of 20% to 60%.
3.4 AIRBORNE FUNGAL SPORE SAMPLING
Total (viable and non-viable) airborne fungal spores were sampled utilizing a high-volume pump with an Air-O-Cell™ spore trap cassette for the collection of bioaerosol (i.e. mold) spores. Air-O-Cell™ spore traps that deposit the spores onto a slide where they are identified and enumerated microscopically were used as a sampling media. The Air-O-Cell™ spore trap was connected to a sampling pump calibrated to a flow rate of 15 liters per minute (LPM) with a sample time of 5 minutes for the collection of 75 liters of air per sample. A total of twenty (20) spore trap air samples (including 18 interior functional spaces and 2 outdoor).
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The advantage to using this method is quick turn-around time from the laboratory, as the samples are evaluated microscopically and do not require incubation. Please note that spores including viable and non-viable spores are counted. Fungal spores cannot be speciated using this method. 3.5 SURFACE FUNGI TAPE LIFT SAMPLING Samples were collected from surfaces within selected areas that are visually observed to have or exhibit potential signs of fungal growth for direct examination utilizing tape lift sample methodologies. Fungal analysis includes genus identification of viable and non-viable fungi present. However, utilizing this method it is not possible to differentiate between viable and non-viable fungi spore types. A total of four (4) surface tape lift samples were collected from visible water staining and mold. 3.6 LABORATORY
The microbial samples were transported under chain of custody to PSI’s Microbiological Laboratory located in 850 Poplar Street, Pittsburgh, Pennsylvania for analysis. Mold spores will be identified by microscopic observation. PSI’s laboratory is accredited by the AIHA and is accredited by EMLAP. Copies of the chain of custody forms and laboratory analytical reports are attached.
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4 ASSESSMENT RESULTS
PSI has performed a conducted a Mold and IAQ Assessment of the subject site in general accordance with PSI Proposal No. 0448-324502.
4.1 VISUAL ASSESSMENT
Prior to collecting airborne samples, PSI conducted a visual assessment of site. All observed mold growth and water damages are noted in the tabulation of the visual assessment shown in Table 1 below.
Classroom 1058 Observed water staining on acoustic ceiling tiles; mold growth on chairs Damp odor noted
Hallway outside Classroom 1060 Observed water staining on acoustic ceiling tile outside 1060 None noted
Classroom 1061 Observed water staining on acoustic ceiling tiles None noted
4.2 TEMPERATURE AND RELATIVE HUMIDITY MEASUREMENTS
As stated in Section 3.3, the interior and exterior were investigated using Extech® Humidity/Temperature Pen 445580. A summary of the measurements for temperature and relative humidity in the areas that were sampled and assessed are presented below in Table 2.
Table 2: Temperature and Relative Humidity Measurements
Location Relative Humidity (%)
Temperature (°F)
Lobby 23.4% 63.3°F Auditorium 21.3% 64.4°F
Media Center 21.1% 72.3°F Hallway outside Classrooms 1012 and 1125 26.3% 66.0°F
Hallway outside Classrooms 1073 and 1072 30.7% 64.9°F
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Location Relative Humidity (%)
Temperature (°F)
Health Suite 1111 28.9% 64.7°F Art Room 1027 30.7% 66.9°F
Outdoor conditions 17.1% 68.5°F
Indoor temperatures were within the ASHRAE recommendation of 68 to 76 degrees Fahrenheit (oF) for winter month. Relative humidity was also within the OSHA recommendation of 20% to 60%. For the purpose of this assessment, temperature and humidity should not be relied on due to the ongoing construction at the facility.
4.3 MOLD
Airborne Mold Sampling The interpretation of bioaerosol sample results is a challenge for the health and safety professional as there are at present no strict numerical guidelines which are appropriate for assessing whether the contamination in an area is acceptable or not. There are currently no regulatory standards for evaluating airborne fungi concentrations for this or any other facility. The standard of care in the industry involves the comparison of airborne fungal species from the indoor air environment to outdoor varieties and concentrations. The best scenario in this evaluation is to observe similar species indoors and outdoors, with the concentrations indoors being less than, or not significantly more than, the outdoor concentrations.
The ACGIH has recommended rank order assessment, as shown below, as a means of interpreting data. Because of the problems noted above, numerical guidelines cannot be used as the primary determinant of whether there is a problem.
1. Significant numbers of certain pathogenic fungi should not be present in indoor air. These includeAspergillus fumigatus, Histoplasma, and Cryptococcus. Bird or bat droppings in air intakes, ducts orrooms should be assumed to contain these pathogens. Corrective action should be taken accordingly inthe event of positive
2. The persistent presence of significant numbers of toxigenic fungi, Stachybotrys, toxigenic Aspergillus,Penicillium, and Fusarium species indicates that further investigation and remedial action should betaken accordingly
3. The confirmed presence of one or more fungal species occurring as a significant percentage of asample in indoor air samples and not similarly present in concurrent outdoor samples is evidence of afungal amplifier
4. The indoor airborne species of mold (mycoflora) and bacteria is qualitatively similar and quantitativelylower than that of outdoor air.
It is important to note in evaluating air sampling data that airborne concentrations may vary significantly based on variability in fungal growth, time of day, temperature, humidity and air movement. “Significantly elevated” conditions are present when the indoor sample concentration is observed to be at least one order of magnitude (10 times) above the average outdoor measured concentration. In evaluating airborne mold data, PSI also reviewed the total airborne mold spore concentrations, measured from indoor sample locations, to
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determine if they were “significantly elevated” when compared to total airborne spore concentrations measured from outdoor locations.
A total of twenty (20) air samples were collected, eighteen (18) indoors and two (2) outdoors. The indoor airborne mold spore concentrations were between 26 spores/m3 (spores per cubic meter of air) and 39,000 spores/m3 while the outdoor level were between 3,700 spores/m3 and 4,700 spores/m3. The types of mold identified indoors were generally similar to the outdoor types, but at lower concentrations. Table 3 shows only the same types of spores found inside as compared to outside or only found inside. Laboratory results for the airborne mold spore analyses are contained in Appendix A.
Total Spores (spores/m3) 330 230 4,700 3,700 Notes: Total spores have been rounded to two significant figures to reflect analytical precision “- “= Not Detected
* Unknown are spores without a distinctive morphology on spore traps and nonviable surface samples. The results of the air sampling indicated significant elevated indoor airborne concentrations of Penicillium/ Aspergillus Group fungal spores as compared to the outside ambient samples in classrooms 1058, 1059, 1061 and the cafeteria. Penicillium/ Aspergillus Group are commonly found in soil, decaying plant debris and in the air. Indoors, it can be commonly found in in house dust and water-damaged buildings. Surface Tape Lift Results A total of four (4) surface tape lift sample was collected from visually observed mold growth and surfaces that show water staining. Table 4 below shows the results of tape lift sampling. Laboratory results for the airborne mold spore analyses are contained in Appendix B.
Project Number: 04481599 Fungal & IAQ Assessment Douglas MacArthur, ACPS
Notes: “- “= Not Detected Quantification of fungal spores are graded from 1+ through 4+ as follows: 1+ = Occasional spores seen 2+ = Few spores seen 3+ = Moderate spores seen 4+ = Numerous spores seen
The results of surface fungi tape lift sampling identified the target mold species Cladosporium and Penicillium/ Aspergillus Group at heavy concentrations.
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5 CONCLUSIONS AND RECOMMENDATIONS
PSI has performed the Limited Fungal and Indoor Air Quality (IAQ) Assessment of the subject site in general accordance with PSI Proposal Number 0448-324502. Based on the methodologies and results of this monitoring, the following conclusions and recommendations have been developed.
CONCLUSIONS
Based on the methodologies described in this report, PSI has developed the following conclusions:
Building Walk-thru / Observations
Visible mold was noted in Classroom 1058. Stains and evidence of moisture on ceiling tiles were noted on the ceiling tiles of Classrooms 1058, 1061 and Hallway outside 1061. The moisture stained ceiling tile is evidence of a water intrusion issue.
Temperature and Relative Humidity
The temperature and relative humidity indoors were within ASHRAE acceptable limits or ranges. However, it should be noted that relative humidity was moderately higher in Classrooms 1058, 1059, 1060, 1061 and 1061 as compared to the rest of the indoor assessed areas.
Airborne Mold Spores
The results of the air sampling indicated the presence of significantly elevated airborne concentrations of Penicillium/Aspergillus Group fungal spores in Classrooms 1058, 1059, 1061 and the Cafeteria as compared to outside concentrations
Surface Tape Lift for Mold
The results of surface fungi tape lift sampling identified the target mold species Cladosporium and Penicillium/ Aspergillus Group at heavy concentrations on furniture in Classroom 1058
RECOMMENDATIONS
PSI recommends the following:
• Further investigation to determine the source of the water staining on the ceiling tiles of Classrooms1058, 1061 and Hallway outside 1061.
• Repair of any deficiency causing the water staining on the ceiling tiles.• Disposal of the identified water stained, and mold impacted furniture.• Cleaning and application of a mold inhibitor throughout Classrooms 1058, 1059, 1061 and the Cafeteria
followed by replacement of the water impacted ceiling tile.• Cleaning and sanitizing with a mold inhibitor of the HVAC system and duct work in Classrooms 1058,
1059, 1061 and the Cafeteria, followed by ensuring proper balance of the system.• Follow-up air testing in Classrooms 1058, 1059, 1061 and the Cafeteria upon completion of
remediation activities.
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6 WARRANTY
6.1 FUNGAL ASSESSMENT
The field observations, measurements, and research reported herein are considered sufficient in detail and scope to form a reasonable basis for a Mold and IAQ Assessment of this property. The assessment, conclusions, and recommendations presented herein are based upon the subjective evaluation of limited data. They may not represent all conditions at the subject site as they reflect the information gathered from specific locations. PSI warrants that the findings and conclusions contained herein have been promulgated in accordance with generally accepted industrial hygiene methodology and only for the site described in this report.
PSI warrants that the findings contained herein have been prepared with the level of care and skill ordinarily exercised by professionals practicing in the community. The scope of work addressed readily accessible and exposed interior building areas. Observation or sampling of inaccessible areas such as behind walls or within ductwork was performed only at specific locations as described in this report. PSI’s investigation did not address determining the source of moisture intrusion into the structure.
The sampling methods utilized by PSI in performing its services may have resulted in the disturbance or dispersal of mold spores. While we attempted to minimize such dispersal, we cannot eliminate it entirely. Client acknowledges that mold is ubiquitous to the environment with mold amplification occurring when building materials are impacted by moisture. Client further acknowledges that site conditions are outside of PSI’s control, and that mold amplification will likely occur, or continue to occur, in the presence of moisture. As such, PSI cannot and shall not be held responsible for the occurrence or reoccurrence of mold amplification.
No other warranties are implied or expressed.
6.2 USE BY THIRD PARTIES
This report was prepared pursuant to the contract PSI has with ACPS. That contractual relationship included an exchange of information about the subject site that was unique and between PSI and its client and serves as the basis upon which this report was prepared. Because of the importance of the communication between PSI and its client, reliance or any use of this report by anyone other than ACPS, for whom it was prepared, is prohibited and therefore not foreseeable to PSI. Reliance or use by any such third party without explicit authorization in the report does not make said third party a third-party beneficiary to PSI’s contract with ACPS. Any such unauthorized reliance on or use of this report, including any of its information or conclusions, will be at third party’s risk. For the same reasons, no warranties or representations, expressed or implied in this report, are made to any such third party.
6.3 UNIDENTIFIABLE CONDITIONS
This report is necessarily limited to the conditions observed and to the information available at the time of the work. Due to the nature of the work, there is a possibility that there may exist conditions which could not be identified within the scope of work or which were not apparent at the time of our site work. This report is also limited to information available from the client at the time it was conducted. The report may not represent all conditions at the subject site as it only reflects the information gathered from specific locations.
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APPENDIX A – LABORATORY MOLD SPORE TRAP REPORT AND SAMPLE CHAIN OF CUSTODY
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
PSI, Inc.2930 Eskridge RoadFairfax, VA 22031
Attn: Rinzova Renthlei
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
raw ct. spores/m3 % raw ct. spores/m3 % raw ct. spores/m3 %26 350 0.881 13 0.03
1 13 0.03
2 27 100.00 2920 39000 98.98
1 13 50.00 2 27 0.07
1 13 50.00
3 3 375 75 752 27 100 2 26 100 2950 39,000 100
Total % may not equal 100 due to rounding.
13
Air-O-Cell
006AAS-6
CR-1058
Please see last page13
Air-O-Cell
SPORE TRAP REPORT
TEST METHOD: PSI-WI-620-816
004AAS-4
Hallway -Outside 1012, 1014
13
Air-O-Cell
005AAS-5
Classsroom (CR)-1060
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
raw ct. spores/m3 % raw ct. spores/m3 % raw ct. spores/m3 %1 13 25.00 1 13 4.76
6 80 28.571 13 12.50 1 13 4.76
1 13 4.76
6 80 75.00 3 40 75.00 10 130 47.62
1 13 12.50 2 27 9.52
3 3 375 75 758 110 100 4 53 100 21 280 100
Total % may not equal 100 due to rounding.
13
Air-O-Cell
012AAS-12
Kitchen
13
Air-O-Cell
SPORE TRAP REPORT
TEST METHOD: PSI-WI-620-816
010AAS-10
Hallway Outside 1044
13
Air-O-Cell
011AAS-11
Ofiice 1047
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Page 8 of 8
Specific Sample Comments:
006A: Aspergillus conidiophores present.
General Report Comments:
* Unknown/brown are spores without a distinctive morphology on spore traps and non-viable surface samples.
** Background debris is the amount of particulate matter present on the slide and is graded from 1-5 with 1 being very little, while a debris rating of 5 is unreadable. The higher the rating the more likelihood spores may be underestimated. A rating of 4 should be interpreted as minimal counts and may actually be higher than reported. ‡ Total spores/m³ has been rounded to two significant figures to reflect analytical precision.
All samples were analyzed at 400x or 600x magnification unless noted.The reporting limit is one spore/item adjusted for volume. Entire trace was analyzed unless noted.
Results relate only to items tested as received. Results are not corrected for blank data.This report may not be reproduced except in full, without written approval of PSI, Inc.Samples will be disposed of within thirty (30) days unless notified in writing by the client.Results based on volume measurement provided by the client.Disclaimer : The laboratory is not responsible for interpretation of test results or for methods used during sampling.All samples were in acceptable condition unless noted.
Respectfully submitted, PSI, Inc.
Cathy McNamee, Approved Signatory
SPORE TRAP REPORT
Work Order: 2011086Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
PSI, Inc.2930 Eskridge RoadFairfax, VA 22031
Attn: Rinzova Renthlei
Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
www.intertek.com/building
APPENDIX B – LABORATORY SURFACE FUNGI TAPE LIFT REPORT AND SAMPLE CHAIN OF CUSTODY
Work Order: 2011088Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
PSI, Inc.2930 Eskridge RoadFairfax, VA 22031
Attn: Rinzova Renthlei
________________________________________________________ Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320
Page 2 of 2
Specific Sample Comments:
001A: No fungal spores detected.002A: Aspergillus conidiophores present.003A: No fungal spores detected.004A: No fungal spores detected.
General Report Comments:
* Unknown/brown are spores without a distinctive morphology on spore traps and non-viable surface samples.
Quantification of fungal spores are graded 1+ through 4+ with:1+ = Occasional spores seen2+ = Few spores seen3+ = Moderate spores seen4+ = Numerous spores seen
All samples were analyzed at 400x or 600x magnification unless noted.
Results relate only to items tested as received.This report may not be reproduced except in full, without written approval of PSI, Inc.Samples will be disposed of within thirty (30) days unless notified in writing by the client.
Disclaimer : The laboratory is not responsible for interpretation of test results or for methods used during sampling.All samples were in acceptable condition unless noted.
Respectfully submitted, PSI, Inc.
Cathy McNamee, Approved Signatory
DIRECT MICROSCOPIC EXAMINATION REPORT
Work Order: 2011088Reported: 11/6/20 Project Number: 04481599Analyzed: 11/6/20Received: 11/4/20Sampled: 11/3/20 Analyst: JM
DATE
Project Name: ACPS-IAQ
PSI, Inc.2930 Eskridge RoadFairfax, VA 22031
Attn: Rinzova Renthlei
Professional Service Industries, Inc. 850 Poplar Street, Pittsburgh, PA 15220 Phone 412-922-4000 Fax 412-922-4043 Rev.9 (TV) 030320