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DocuSign Envelope ID:6A1278D6-4287-4002-98A9-C69C8C1D313E <br /> Indoor Environmental Air Quality Assessment <br /> sources),hygiene products, aerosols, and outdoor air infiltration. Porous contents can be <br /> difficult to fully clean and may harbor elevated amounts of dust and microbial spores. <br /> o Elevated 0.3 and 0.5-micron sizes are considered ultrafine particles that usually consist of <br /> fragments of organic particles such as bacteria,fungi,viruses,and insects, and often <br /> indicate outdoor air infiltration(such as common outdoor allergens),or combustion <br /> sources such as cooking or smoking. <br /> 0 1.0 and 2.5-micron sizes may include spores from pathogenic Aspergillus&Penicillium. <br /> o Methods to reduce general particulate levels include general particulate/dust reduction <br /> such as reducing porous contents when possible,proper cleaning methodology, increase <br /> in HVAC filtration, increase in air movement time, and increasing tightness of the HVAC <br /> system. More information regarding these methods is outlined in the conclusions below. <br /> • Measurements for relative humidity(RH), carbon monoxide, carbon dioxide,total volatile organic <br /> compounds(TVOCs),and temperature registered within the healthy indoor air threshold. <br /> • Refer to the IAQ data chart for more information. <br /> Lab Result: Air samples for laboratory analysis were collected in several rooms and outdoors to help <br /> determine airborne microbial levels. See the"Chain of Custody"document below for specific sample <br /> locations. Below are the significant findings. <br /> • A very elevated(>12000 counts/m3)level of the pathogenic fungi Aspergillus/Penicillium-like <br /> was identified in the Multipurpose room. <br /> • A very elevated(>12000 counts/m3)level of the pathogenic fungi Aspergillus/Penicillium-like <br /> was identified in the Classroom. <br /> • A very elevated(>12000 counts/m3)level of the pathogenic fungi Aspergillus/Penicillium-like <br /> was identified in the Kitchen. <br /> • A very elevated(>12000 counts/m3)level of the pathogenic fungi Aspergillus/Penicillium-like <br /> was identified in the Family Bathroom. <br /> • A very elevated(10100 counts/m3)level of the pathogenic fungi Aspergillus/Penicillium-like was <br /> identified in the Library/Computer room. <br /> o The normal indoor condition for Aspergillus/Penicillium-like ranges between 0-650 <br /> spores. Lower levels of pathogenic fungi are occasionally identified indoors. Elevated <br /> levels of these pathogenic types of fungi may cause stronger allergic symptoms and can <br /> create sick-like reactions in most people. Younger and older individuals, and those who <br /> have sensitivities or are immunocompromised, are especially vulnerable. Sensitive <br /> individuals may experience allergic-like reactions at lower levels. <br /> ■ Pathogen is defined as a substance capable of causing infection or disease in <br /> otherwise healthy people. Pathogenic molds cause illness by growing in or on <br /> human tissues and most often require professional remediation. <br /> ■ Aspergillus and Penicillium are two of the most commonly found pathogenic <br /> fungi in problem buildings. Because the spores of Aspergillus and Penicillium <br /> are very similar,they are not differentiated by microscopic analysis and are <br /> reported together. These fungal types are capable of producing potent <br /> mycotoxins and are considered an indication of a current or prior moisture issue <br /> in a building. <br /> Environmental Solutions Group • 7 Maple Leaf Drive,Ste 104, Greensboro, NC 27410 • 336-373-1538 2 <br /> www.Go-ESG.com <br />