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 building materials affected in the in the Condition 3 areas.It is possible that no additional signs of suspect microbial growth are observed outside of the known areas of wetness/growth but a thorough intrusive inspection by the remediation contractor will determine the condition. In order to fully inspect the wall framing system and determine the full extent of the moisture issues, removal of additional building materials may be necessary. • Structural materials that are significantly contaminated but cannot be removed(such as wall framing)must be thoroughly cleaned with an anti-microbial chemical and then HEPA-vacuumed as indicated below. Structural materials with previous visible fungal growth may be encapsulated with anti-microbial paint after the clearance test is complete. PHASE II: CLEANING(Condition 2 and 3 areas) • After all demolition has been completed, and all water issues are repaired,remaining building materials should measure<20%moisture content. Convert the negative air machines to air scrubber function. • Condition 2 and 3 areas should be cleaned by using traditional wiping and HEPA vacuuming techniques or by using blast media such as dry ice. Dry ice may be a more cost-effective method in some situations. This would include but not be limited to pipes,ductwork,wiring, framing members etc. • Wipe down all remaining exposed surfaces with an EPA-registered anti-microbial. Using a `green' product such as Benefect is recommended. • HEPA-vacuum all exposed surfaces. • Any carpets or rugs that remain should be cleaned using steam. Dehumidifiers should be used in conjunction with this step to ensure that moisture is removed from the space quickly. This should be one of the last steps before calling for a PRV. • The IICRC recommends that the remediation contractor conduct pre-clearance air quality monitoring to identify any remaining problem areas. A laser particle counter is ideal for this purpose. Checking air scrubber performance,any air supplies,and breathing zone air is an important part of the monitoring process. • It may be necessary to place plastic barriers at the cavities, especially if airborne particle counts continue to be an issue. Although these areas may appear to be clean,they may introduce some contaminants into the clean space, and you may not be able to fully control the air quality without barriers. • Power off all air scrubbers in the building and fog it with an EPA-registered anti-microbial intended for bioaerosol application. • Power on the scrubbers after the manufacturer's recommended dwell time has elapsed. • Allow the air scrubbers to remain in operation for a minimum of 24 hours prior to collection of air samples for clearance testing(or until airborne particle load indicates that the cleaned area is ready for a clearance assessment). • Power on the HVAC system once the mechanical contractor has completed their evaluation and remediation cleaning of the air handler and duct system. • Handling of materials removed from the building or that will remain in the building: o Certain items removed from the building require special handling for removal of fungal spores. o Hard-surfaced non-porous materials such as solid wood furniture,metal bed frames,non- porous decorative items, and glass may be HEPA-vacuumed,wiped down with an EPA- registered anti-microbial designed for wipe application,and HEPA-vacuumed one more Environmental Solutions Group • 7 Maple Leaf Drive,Ste 104, Greensboro, NC 27410 • 336-373-1538 27 www.Go-ESG.com