2022-029-E-AMS-Sasser Companies-Rogers Road Community Center Remediation

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DocuSign Envelope ID:6A1278D6-4287-4002-98A9-C69C8C1D313E Indoor Environmental Air Quality Assessment Lab Result: Surface samples for microbial laboratory analysis were collected from several surfaces where suspect fungal growth was observed. Please see the"Chain of Custody Document below for specific sample locations. • The lab identified a trace(1)count of the toxigenic fungi Chaetomium in the hallway ceiling. o Toxigenic fungi are slow-growing and produce toxins in spores which are poisonous by inhalation. They tend to colonize building materials with high cellulose content and high moisture content and generally indicate a significant and prolonged moisture source. Five toxigenic types of fungi are designated as `zero-tolerance' in an occupied indoor environment by the American Society of Safety Engineers(ASSE). • The lab identified a loaded(4)count of the pathogenic Aspergillus/Penicillium-like in the Multipurpose room. • The lab identified a loaded(4)count of the pathogenic Aspergillus/Penicillium-like in the Library/Computer room. • The lab identified a loaded(4)count of the pathogenic Aspergillus/Penicillium-like in the Classroom. o See the description of this type of fungi above. • The lab identified a loaded(4)count of the allergenic Cladosporium at the Hallway Ceiling. • The lab identified a loaded(4)count of the allergenic Cladosporium in the Men's Bathroom. • The lab identified a loaded(4)count of the allergenic Cladosporium in the Women's Bathroom o Allergenic fungi appear outdoors at moderate and high levels and are often identified indoors at trace and low levels.Many people exposed to higher levels of these types of fungi may experience allergic-like reactions. Sensitive individuals may experience allergic-like reactions at lower levels. The lab uses a scoring system of I (trace), 2 (light), 3 (abundant), and 4 (loaded) to characterize the number of microbial spores identified in the sample. This scoring system is accepted by the IICRC S520 Standard for Professional Mold Remediation as indicative of normal fungal ecology should the score be a 1 or 2, and abnormal fungal ecology should the score be a 3 or 4. The lab also reports the number of hyphal fragments, or pieces of microbial material, which further support a characterization of either abnormal or normal fungal ecology. ESG Concludes: • The visible microbial growth and the extremely elevated amount of pathogenic fungi in the laboratory air samples samples indicate that the indoor environment was optimum for fungal growth, and it is likely that fungal spores have begun to colonize throughout the entirety of the building affected by elevated humidity. The toxigenic fungi identified at the hallway ceiling indicates that prolonged saturation of that building material likely occurred. Pathogenic fungal spores identified in the air at elevated amounts indicates that fungal spores have likely been dispersed onto the surfaces throughout the building at elevated amounts as well as the HVAC system. The likely cause of the elevated counts is a humidity/condensation issue related to the HVAC system that occurred during the hot humid summer months. o Due to the findings stated above,which especially include the extremely elevated counts of Aspergillus/Penicillium-like at the air sampling locations,ESG recommends that no one enter this building without proper PPE,which at a minimum should include a P100 respirator,until the indoor air quality and moisture issues are resolved. Environmental Solutions Group • 7 Maple Leaf Drive,Ste 104, Greensboro, NC 27410 • 336-373-1538 3 www.Go-ESG.com