January 5, 2017 Ms. Alix Zapolski Zapolski Real Estate, LLC. 501 Washington Street Durham, NC 27701 Re: Limited Indoor Air Quality Assessment Women s Restroom 137 E. Franklin Street, Chapel Hill, NC UNC Institute for the Environment EI Project No. IHMO160216.00 Dear Ms. Zapolski: The EI Group, Inc. (EI) is pleased to present this report for the Limited Indoor Air Quality (IAQ) assessment performed at the Women s Restroom, which is located just outside of the UNC Institute for the Environment located on the sixth floor at 137 E. Franklin St., in Chapel Hill, North Carolina. Site Observations Mr. Chris Murray, CIH, visited the referenced location on Friday, November 11, 2016 to investigate the conditions. No visual evidence of fungal growth was noted. The exhaust fan did not appear to be working in the restroom, which may allow odors and moisture to build up creating conditions for potential indoor air quality issues. No dry drains/traps were found, eliminating a potentially concern for odors. Mold Sampling Air Sampling Methods and Results Sampling for airborne fungal spores was conducted in the above listed rooms inside the restroom to determine airborne fungal counts, the genera present, and the relative level of each genus. Air sampling was conducted utilizing ten Air-O-Cell spore-trap sampling media. All air samples were collected utilizing a high volume sampling pump, calibrated with the manufacturers supplied rotometer. The high volume sampling pump was calibrated to 15 liters per minute (LPM) with a sampling time of 5 minutes, giving a total sample volume of 75 liters. Following collection, each sample was given a unique tracking number, placed under chain of custody, and hand delivered to EMSL Analytical Laboratory, located in Morrisville, NC for analysis by direct optical microscopy. The American Industrial Hygiene Association accredits EMSL in environmental microbiology. One sample was also collected from the exterior of the building to establish baseline fungal concentrations of the exterior air. The baseline sample was collected after the collection of the indoor sample. Environmental, Health and Safety Solutions.
No quantitative limits exist for exposure to mold spores. Evaluation of the results obtained is performed by comparing spore levels indoors to those found outdoors at the time of sampling. Spores contained in samples collected inside should be equal to or less than, and similar in distribution, to those in outdoor air. Please reference Table 1 (below) for a summary of all sampling locations and findings. Airborne fungal spore concentrations identified in the sampled area was similar in type and lower in concentration as compared to the outdoor air control sample location. A summary of Fungal Spore Sampling Results is shown at Table 1 below and sampling data analytical results is enclosed at the Laboratory Analysis Report appendix at the end of this report. Aspergillus/Penicillium was present in the restroom sample but not in the outdoor sample. Because the women s restroom opens directly in the common hallway and elevator lobby it was determined this was not a significant finding as the spores could have originated from other areas. Sample Location Table 1: Summary of Fungal Spore Sampling Results Sample No. Total Spore Count (cts/m 3 ) Women s Restroom 6 th Floor 23610699 410 Outside 23610693 2930 Conclusions and Recommendations Results of the indoor air quality survey indicate that no excessive concentrations of airborne fungal spores are present in the area. No visual indications of suspect fungal growth were identified. The exhaust fan did not appear to be working in the restroom, which may allow odors and moisture to build up creating conditions for potential indoor air quality issues. No dry drains/traps were found, eliminating a potentially concern for odors. EI recommends that the exhaust fan be either repaired or replaced. The sampling and laboratory protocols used in this investigation are in accordance with standard industrial hygiene protocols for indoor air quality assessments and sampling protocol for environmental fungi. Qualifications and Limitations This report summarizes our evaluation of the conditions observed in the restroom of the sixth floor of 137 E. Franklin St., in Chapel Hill, North Carolina. Our findings are based upon our observations and sampling results obtained at the facility at the time of our visit. The report, results, and subsequent recommendations reported herein are also limited to the information available at the time it was prepared and investigated. Conditions may have been in effect prior to the sampling events that have changed over time and which The EI Group, Inc. 800.717.3472 www.ei1.com
cannot be predicated within the scope of this limited investigation. Any conditions discovered which deviate from the data contained in this report should be presented to us for our evaluation Alix, we sincerely appreciate the opportunity to provide our services to you and Zapolski Real Estate. Please feel free to contact me at (919) 657-7500, ext. 257 if you have any questions. Yours Truly, The EI Group, Inc. Christopher B. Murray, CIH, CSP Senior Vice President, Operations Enclosures The EI Group, Inc. 800.717.3472 www.ei1.com
EMSL Analytical, Inc. 2500 Gateway Centre Blvd., Suite 600 Morrisville, NC 27560 Tel/Fax: (919) 465-3900 / (919) 465-3950 http://www.emsl.com / raleighlab@emsl.com EMSL Order: 291608506 Customer ID: ENVI67 Customer PO: IHMO16 Project ID: Attn: Chris Murray Phone: (919) 657-7500 The EI Group, Inc. Fax: (919) 657-7551 2101 Gateway Centre Blvd, Suite 200 Collected: 11/11/2016 Morrisville, NC 27560 Received: 11/14/2016 Project: Franklin St. Analyzed: 11/14/2016 Test Report: Air-O-Cell( ) 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 291608506-0001 23610699 75 Women's Restroom 291608506-0002 23610693 75 Outside 291608506-9901 Dummy 9999 Dummy Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total - - - Alternaria - - - - - - - - - Ascospores - - - 1 40 1.4 - - - Aspergillus/Penicillium 5 200 48.8 - - - - - - Basidiospores 5 200 48.8 59 2600 88.7 - - - Bipolaris++ - - - - - - - - - Chaetomium - - - - - - - - - Cladosporium - - - 5 200 6.8 - - - Curvularia - - - - - - - - - Epicoccum - - - - - - - - - Fusarium - - - - - - - - - Ganoderma - - - - - - - - - Myxomycetes++ - - - 2 90 3.1 - - - Pithomyces - - - - - - - - - Rust 1* 10* 2.4 - - - - - - Scopulariopsis - - - - - - - - - Stachybotrys - - - - - - - - - Torula - - - - - - - - - Ulocladium - - - - - - - - - Unidentifiable Spores - - - - - - - - - Zygomycetes - - - - - - - - - Total Fungi 11 410 100 67 2930 100 - - - Hyphal Fragment - - - 1 40 - - - - Insect Fragment 1 40 - - - - - - - Pollen 1* 10* - - - - - - - Analyt. Sensitivity 600x - 44 - - 44 - - - - Analyt. Sensitivity 300x - 13* - - 13* - - - - Skin Fragments (1-4) - 3 - - 1 - - - - Fibrous Particulate (1-4) - 1 - - - - - - - Background (1-5) - 2 - - 1 - - - - Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut No discernable field blank was submitted with this group of samples. Alan Goldstein, Ph.D., 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 otherwise 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. Due to method stopping rules, raw counts in excess of 100 are extrapolated based on the percentage analyzed. EMSL maintains liability limited to cost of analysis. 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. Morrisville, NC AIHA-LAP, LLC--EMLAP Lab 173741 Initial report from: 11/14/2016 15:49:58 For information on the fungi listed in this report, please visit the Resources section at www.emsl.com MIC_M001_0002_0001 1.71 Printed: 11/14/2016 15:49 PM Page 1 of 1
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