Report of Limited Indoor Air Quality Services

Transcription

1 Report of Limited Indoor Air Quality Services 301 Hale Street Harrisburg, Pennsylvania Prepared For: Harrisburg School District 1601 State Street Harrisburg, Pennsylvania February 2015

2 February 2015 Via Mr. John Gallagher Facilities Director Harrisburg School District 1601 State Street Harrisburg, Pennsylvania Subject: Report of Limited Indoor Air Quality Services Harrisburg, Pennsylvania Dear Mr. Gallagher: Aether Assessments, LLC. (AETHER) is pleased to present this report of our limited Indoor Air Quality (IAQ) services at the subject site. Our services were provided at your request based on your acceptance of AETHER Proposal 15009R. The report includes sections describing project information, scope of services, results and findings, and evaluations and conclusions. Also included are drawings indicating approximate sampling locations, indoor air quality data sheets, and a copy of the laboratory analytical results. Thank you again for the opportunity to provide services for your project. Should you have any questions, or if you require additional information, please do not hesitate to contact me at Respectfully, AETHER ASSESSMENTS, LLC. Eric A. Mercer, CIEC Owner-Principal

3 SECTION REPORT OF LIMITED INDOOR AIR QUALITY SERVICES Harrisburg, Pennsylvania TABLE OF CONTENTS PAGE SECTION PAGE INTRODUCTION LIMITED VISUAL ASSESSMENT CARBON DIOXIDE TESTING RELATIVE HUMIDITY TESTING TEMPERATURE TESTING CARBON MONOXIDE TESTING FUNGAL SPORE-TRAP TESTING CONCLUSIONS AND RECOMMENDATIONS 8 Appendix A: Appendix B: Appendix C: Project Drawings IAQ On-Site Testing Data Sheets Mold Analytical Sample Results

4 Limited IAQ Services February INTRODUCTION Based upon your acceptance of AETHER Proposal 15009R, AETHER conducted limited IAQ testing within the school facility on February 10, AETHER understands that our services were in response to concerns that have been expressed regarding specific IAQ components within the school building. In general, AETHER conducted a limited visual assessment, as well as testing for Carbon Dioxide (CO 2 ), Carbon Monoxide, Temperature ( F), Relative Humidity (%RH), and airborne fungal spore counts in areas using the following sampling location guideline: Representative portions of student accessible corridors and common areas. Those classrooms identified by school personnel as areas with known or perceived issues, and/or those rooms identified by Siemens as locations with potential issues regarding suspect mold growth or inoperable ventilation components that could directly impact IAQ (i.e. In operable outdoor air intake dampers, visible suspect mold growth on filters). Approximately 20% of the remaining classrooms. For this school, AETHER was not provided with classrooms that were suspected to contain issues. Limitations This survey was performed using procedures and a level of diligence typically exercised by professional consultants performing similar services. The results of our testing and any conclusions apply only to those areas tested at the time the samples were collected and should not be considered comprehensive enough to represent all areas of the structure. For this reason, care should be taken to recognize individual reports of concerns within specific areas and ensure that they are addressed rather than attempting to extrapolate findings contained herein to determine the validity of the concern. In many instances, teacher and student belongings may have obscured conditions. Interpretation of analytical data is subject to change based on input from licensed medical personnel or individual health conditions, so any conclusions contained herein should not be considered to apply in all cases and may need to be re-evaluated based on individual cases/concerns. AETHER was contracted to solely address the parameters and locations discussed in this report and this report is in no way a guarantee that other hazards are not present.

5 Limited IAQ Services February LIMITED VISUAL ASSESSMENT Within each selected sampling area, AETHER conducted a visual assessment. The assessment was limited to documenting visible indications of water damaged materials and/or suspect mold growth on exposed surfaces (ceiling tiles, walls, ventilation components). In addition, AETHER documented readily apparent observations of conditions that could have likely impacted other parameters tested for during our services. The survey did not include comprehensive building or mechanical evaluations to aid in the delineation of conditions which may be located within enclosed spaces such as, ceiling plenums, wall cavities, and internal ventilation components. The following table summarizes pertinent observations made within each sampling location: Location Outdoors Auditorium Ground has snow cover Minor dust visible on vents. Truncated Notes N. Corridor Visibly clean and no stains visible in area Gymnasium Visibly clean and no stains visible in area people. Forced air with dust on vents. 307 Vacant. Forced air with dust on vents people. Forced air with dust on vents. Otherwise visibly clean. SE Corridor Visibly clean and no stains visible in area 311 Forced air with dust on vents. 1 ceiling tile with small stain. 209 Recently vacant. Forced air with dust on vents people. Minor ceiling tile stains. Forced air with dust on vents. Library 16 people. Forced air with dust on vents. 400 Recently vacant. Forced air with dust on vents. W. Corridor Visibly clean and no stains visible in area 113 Recently vacant. Forced air with dust on vents. 104 Recently vacant. Forced air with dust on vents. Principal Office Visibly clean and no stains visible in area Please note that these are subjective notes. i.e. Visibly clean does not infer a complete absence of dust rather that exposed surfaces in the area appeared free of heavy or atypical accumulations of dust and debris.

6 Limited IAQ Services February CARBON DIOXIDE TESTING Within each selected sampling area, AETHER utilized an Extech CO250 direct-read instrument to document CO 2 concentrations at the sampling location. The instrument was pre-calibrated according to the manufacturer s recommendations. AETHER placed the instrument in a representative area within the room at a height approximately that of seated breathing level where it was allowed to stabilize for at least five (5) minutes. The stabilized readings were then recorded and have been summarized in the following graph: Carbon Dioxide Results Principal Office W. Corridor 400 Library SE Corridor Gymnasium N. Corridor Auditorium Outdoors Carbon Dioxide (ppm) Each of the selected sampling locations were within the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) recommendation of no more than 700 ppm greater than the outdoor concentration. This guideline is typically for comfort (perception of good air quality, body odor, etc.), and is not a ceiling value for air quality. It is important to note that although there are typically reports of increased drowsiness and perception of poor air quality in the 1,000 to 2,000 ppm range, CO 2 is not considered a contaminant or pollutant at these levels.

7 Limited IAQ Services February RELATIVE HUMIDITY TESTING Within each sampling area, AETHER utilized an Extech CO250 direct-read instrument to document RH levels at the sampling location. The instrument was pre-calibrated according to the manufacturer s recommendations. AETHER placed the instrument in a representative area within the room at a height approximately that of seated breathing level where it was allowed to stabilize for at least five (5) minutes. The stabilized readings were then recorded and have been summarized in the following graph: Relative Humidity Results Principal Office W. Corridor 400 Library SE Corridor Gymnasium N. Corridor Auditorium Outdoors Relative Humidity (%) The selected sampling locations fell within a range of % relative humidity. While there are no mandated lower limits for relative humidity, there is an optimum range and it is widely reported that indoor relative humidity levels below 30% can increase occupant discomfort, eye irritation, stuffy noses, aggravate allergies and potentially increase the survival and transmission of some viruses. However, in buildings where mechanical systems are not designed with humidity controls, it may not be practical to increase relative humidity so that it falls within the ideal range.

8 Limited IAQ Services February TEMPERATURE TESTING Within each sampling area, AETHER utilized an Extech CO250 direct-read instrument to document air temperature at the sampling location. The instrument was pre-calibrated according to the manufacturer s recommendations. AETHER placed the instrument in a representative area within the room at a height approximately that of seated breathing level where it was allowed to stabilize for at least five (5) minutes. The stabilized readings were then recorded and have been summarized in the following graph: Temperature (F) Principal Office W. Corridor 400 Library SE Corridor Gymnasium N. Corridor Auditorium Outdoors Temperature (F) Most of the selected areas fell within the ASHRAE recommended temperature range of F for winter, with Room 209 only slightly above the recommended limit. It is important to note that the ideal temperature range is based on occupant comfort for a majority of people and may not be suitable for everyone. However, in addition to increased occupant discomfort, higher temperatures in winter are associated with higher energy costs.

9 Limited IAQ Services February CARBON MONOXIDE TESTING Within each sampling area, AETHER utilized an Extech CO10 direct-read instrument to document CO levels at the sampling location. The instrument was pre-calibrated according to the manufacturer s recommendations. AETHER placed the instrument in a representative area within the room at a height approximately that of seated breathing level where it was allowed to stabilize for at least five (5) minutes. The stabilized readings were then recorded. No detectable concentrations of carbon monoxide were detected indoors during our testing services. For reference, 0-1 PPM CO is typically considered a normal background level for indoor air with 9 PPM being a maximum level for acceptable IAQ. Higher concentrations are permitted in regards to health standards.

10 Limited IAQ Services February FUNGAL SPORE-TRAP TESTING AETHER collected air samples from selected areas using Allergenco-D spore trap cassettes. Samples were collected using a sampling pump calibrated to a flow rate of 15 liters per minute for five (5) minutes in accordance with the manufacturer s recommendations. Following collection, the samples were shipped under chain of custody to EMSL Analytical in Cinnaminson, New Jersey and analyzed for total fungal spore count and genus identification. EMSL is accredited by the American Industrial Hygiene Association (AIHA) Environmental Microbiological Laboratory Accreditation Program (EMLAP). Total fungal counts have been summarized in the following graph: Total Fungal Count (count/m 3 ) Principal Office W. Corridor 400 Library SE Corridor Gymnasium N. Corridor Auditorium Outdoors Total Fungal Count (count/m3) Generally, it is desirable to have the inside concentrations of bioaerosols to be less than those found outside and with the same proportion of genera as outside. However, variations to this are often expected as the indoor air does not directly correlate with fluctuations in outdoor mold counts. In addition, during colder months with snow cover, outdoor fungal counts are often suppressed so outdoor samples may not be relevant. Therefore, samples from complainant areas are compared against baseline areas, or comparisons are made by looking at the results from multiple sampling locations. Inside concentrations that are significantly higher or consist of different genera than those found elsewhere may indicate amplification or reservoirs within that area. AETHER would consider results from 15 of the 16 indoor samples consistent with a normal indoor fungal ecology. Sample MA8 collected from Room 311 had a total fungal count of 790 counts per cubic meter consisting primarily of Aspergillus/Penicillium. Although the result is not alarming nor is it uncommon for normal indoor fungal counts to be greater than this result, it is notable in that it differs enough from the other samples to suggest it could have been influenced by some source or could have been a sampling anomaly. There was one (1) stained ceiling tile in the room and visible dust.

11 Limited IAQ Services February CONCLUSIONS AND RECOMMENDATIONS Our services did not indicate areas of significant concern within the school; however, deficiencies were noted that could promote poor indoor air quality or the perception of poor indoor air quality. AETHER provides the following conclusions and recommendations for the subject site: Carbon Dioxide The sampled locations fell within the recommended range. Relative Humidity As mentioned, relative humidity within the sampled locations fell below 30%. Your mechanical contractor should be consulted to determine if the ventilation systems have installed humidity control capabilities. Unfortunately, it may be that relative humidity is a variable that is not practical to control. However, you should be aware that this issue could contribute to many of the reported concerns regarding perceived poor indoor air quality since low humidity can increase occupant discomfort, cause eye irritation and stuffy noses, aggravate allergies and potentially increase the survival and transmission of some viruses. AETHER has found that during colder months many perceptions of poor air quality and complaints of suspect mold growth causing respiratory issues are actually the result of low relative humidity. Being aware of this condition oftentimes helps alleviate concerns that occupants have regarding air quality. Temperature Except for Room 209, all of the sampled locations were within the recommended range for temperature. The limited area that exceeded the upper threshold should be addressed to maintain proper temperatures. Although this primarily impacts occupant comfort, it also impacts operating costs. Maintaining temperatures at a lower level, still acceptable for the occupants, can result in energy savings as well as a more comfortable environment. Carbon Monoxide Detectable concentrations of Carbon Monoxide were not measured in the sampling locations. Mold AETHER did not observe suspect mold growth in the sampling locations and analytical results were consistent with a normal fungal ecology. Nonetheless, Sample MA8 from Room 311 differed enough from the other samples to suggest either a sampling anomaly or potential impact from a source. AETHER recommends the stained ceiling tile be replaced and the room cleaned of visible dust and debris. A repeated sampling event in this area would help confirm that either the corrective actions remedied the elevated fungal counts or that the initial result was an anomaly. Based on the observed conditions, in-house personnel can complete the ceiling tile replacement and cleaning, if policy permits. Visual Summary In general, exposed surfaces within the school were visibly clean. However, the following general observations were made in multiple locations: o Supply/return vents had minor accumulations of dust. AETHER recommends routinely vacuuming supply/return vents as needed to maintain them visibly clean. o Stained ceiling tiles were seen in various locations. AETHER recommends that sources of water intrusion be corrected, visually assess for mold and water damaged materials in the plenum and any stained or water impacted ceiling tiles be replaced promptly. It is important to note that the results are considered snap-shots in time and conditions can change from one area to another or over time. Care should be taken to recognize

12 Limited IAQ Services February 2015 individual reports of concerns within specific areas and ensure that they are addressed rather than attempting to extrapolate findings contained herein to determine the validity of the concern. Although these results should not be used to negate a concern within a specific area, it may be prudent to assume some of the observed deficiencies occur beyond the tested areas and they should be evaluated and corrected, if applicable.

13 Limited IAQ Services February 2015 APPENDIX A PROJECT DRAWINGS

14 Figure 1: Approximate Sampling Locations First Floor February 2015 Gymnasium MA3 Rm 304 MA4 Rm 307 MA5 MA7 Rm 8 MA6 Rm 311 MA8 MA2 Rm 210 MA10 Rm 209 MA9 Library MA11 Auditorium MA1 Rm 113 MA14 Rm 104 MA15 MA13 Principal MA16 Rm 400 MA12 Room location is listed first followed by the mold sample Number, (MA##), which also corresponds with other tests. Drawing provided by Siemens. Not to scale Limited IAQ Services Harrisburg, Pennsylvania

15 Limited IAQ Services February 2015 APPENDIX B IAQ On-Site Testing Data Sheets

16 Time Floor Location PROJECT:HARRISBURG SCHOOL DISTRICT IAQ PROJECT NUMBER: BUILDING:MARSHALL SCHOOL PERSONNEL: MERCER DATE: 2/10/15 Mold Sample # PAGE 1 of 1 Parameter P15005 CO2 RH Temp (F) CO 1351 OUTDOORS AUDITORIUM NORTH CORRIDOR GYMNASIUM SOUTH EAST CORRIDOR LIBRARY WEST CORRIDOR PRINCIPAL OFFICE OUTDOORS

17 Limited IAQ Services February 2015 APPENDIX C FUNGAL SPORETRAP ANALYTICAL RESULTS

18 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-1 Auditorium MA-2 North Corridor MA-3 Gymnasium Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Total Fungi Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 1 of 6

19 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-4 Rm MA-5 Rm MA-6 Rm 8 Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Total Fungi - None Detected - - None Detected Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 2 of 6

20 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-7 Southeast Corridor MA-8 Rm MA-9 Rm 209 Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores * 30* Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores * 10* Zygomycetes Total Fungi None Detected - Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 3 of 6

21 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-10 Rm MA-11 Library MA-12 Rm 400 Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes * 30* Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores * 10* Zygomycetes Total Fungi - None Detected Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 4 of 6

22 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-13 West Corridor MA-14 Rm MA-15 Rm 104 Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust 1* 10* Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Total Fungi None Detected - - None Detected - Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 5 of 6

23 EMSL Analytical, Inc. 200 Route 130 North Cinnaminson, NJ Phone/Fax: (800) / (856) / cinnmicrolab@emsl.com Order ID: Customer ID: Customer PO: Project ID: AETH Attn: Proj: Eric Mercer Aether Assessments, LLC 318 Indian Creek Drive Mechanicsburg, PA Phone: (717) Fax: Collected: 02/10/2015 Received: 02/11/2015 Analyzed: 02/11/2015 Test Report: Allergenco-D( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MA-16 Principal's Office MA-17 Outdoors Dummy Dummy Dummy Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces * 10* Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Total Fungi Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 13* * Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Farbod Nekouei, M.S., Laboratory Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ AIHA-LAP, LLC--EMLAP Lab Initial report from: 02/11/ :20:40 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 2/11/ :20:40PM Page 6 of 6

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