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Indoor Environmental Air Quality Assessment <br /> <br />Environmental Solutions Group ● 7 Maple Leaf Drive, Ste 104, Greensboro, NC 27410 ● 336-373-1538 <br />www.Go-ESG.com <br />5 <br />▪ Structural materials that are significantly contaminated but cannot be removed (such <br />as wall framing) must be thoroughly cleaned using HEPA-vacuuming and anti- <br />microbial wiping as indicated in the “Protocol References” listed below. <br />• In some situations, the remediator may recommend encapsulating building <br />materials with anti-microbial paint, which should only be performed after <br />the remediation is complete and a passing PRV clearance test is achieved <br />(see Step 4). <br />▪ A licensed and/or certified HVAC contractor should be engaged to inspect and repair <br />and/or clean the entire HVAC unit(s) that services Room 7 if needed. This may or <br />may not be the remediation contractor. A National Air Duct Cleaning Association <br />(NADCA) certified firm should be engaged to clean the entire HVAC system and <br />ductwork. If the ductwork is insulated on the inside, it cannot be cleaned and will <br />have to be replaced. <br />• To continue to determine the effectiveness of the dehumidification of the <br />HVAC system, the HVAC unit should be inspected by a professional HVAC <br />contractor. Humidity levels should remain below 60%. <br />▪ Any porous possessions with visible suspect microbial growth should be replaced if <br />possible. All other possessions and contents should be cleaned. Air scrubbing, <br />antimicrobial fogging/wiping, and cleaning of the building materials, possessions and <br />hard surfaces should be performed. <br />▪ Non-porous and semi-porous contents within Room 7 should be thoroughly cleaned <br />using HEPA-vacuuming and anti-microbial wiping as indicated in the “Protocol <br />References” listed below. The interior of the room should be thoroughly cleaned <br />using HEPA-vacuuming and anti-microbial wiping to remove fungal growth, dust, <br />and potential settled fungal spores. The affected area should also be fogged by an <br />antimicrobial. <br />• These activities should occur under engineering controls such as air <br />scrubbing, pressurization, and containment. See more in in the “Protocol <br />References” listed below. <br />• The cleaning of any of the important porous contents should align with <br />industry standards along with the recommendations made by the remediation <br />contractor. <br />• Contents should not be removed and taken to a non-contaminated area before <br />they are cleaned by a professional remediation contractor. It is recommended <br />that any cleaned contents be tested before placing them in a non- <br />contaminated area. <br />o Step 4: Post Remediation Clearance Testing <br />▪ Following the remediation (prior to rebuild), ESG should be engaged to perform a <br />post remediation verification (PRV) to make sure the remediation is complete, that <br />the remediated areas are dry and clean, and that the building contains a normal fungal <br />ecology. See “Protocol References” below for more information and <br />recommendations regarding PRVs. <br />Equipment List: <br />• Delmhorst Moisture Meter <br />• GrayWolf IQ-610 Indoor Air Quality Probe <br />• Advanced Sense Pro Environmental Test Meter <br />DocuSign Envelope ID: 8114697F-F41C-43F1-AFE2-ADC7016F0955