2021-482-E-AMS-Sasser Companies-Emergency Services 510 meadlowlands drive warehouse remediation

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Environmental Solutions Group ● 7 Maple Leaf Drive., Greensboro, NC 27401 ● 336-373-1538 ● www.Go-ESG.com 6 Report with Protocols for Remediation Environmental Solutions Group Leading people, companies and communities to live, work and prosper in a sustainable environment. • Applicable federal, state and local administrative codes, rules and statutes must be identified and followed. Preparatory Steps (to be performed by the remediation contractor): • Use blue painter’s tape under duct tape to prevent unnecessary damage to walls; use staples and duct tape and/or spray tack to seal the protective barriers. • Seal all exterior wall penetrations and window seals in the building with blue painter’s tape to keep outdoor air from being pulled into the building during depressurization (note: it will be necessary to remove blue tape to clean under it. Replace with new tape after cleaning). Since the warehouse is currently unconditioned and considered very ‘leaky’ to outdoor air, best efforts should be made to seal any gaps/openings and temporary dehumidification should be installed. • It may be necessary to remove certain content items before the remediation process begins. • All remaining contents removed from contaminated areas should be cleaned and tested before being moved to a non-contaminated space. Specialized items such as electronics should be cleaned by a remediator that specializes in cleaning these types of items. Not all remediation contractors have the ability or technology to clean these types of items. It is recommended that the remediator provide references to the facility manager before the contract is awarded. • Any paper content items such as files should be removed from the building. These items should be cleaned and handled in accordance with the IICRC S520. These items should not be taken to a non-contaminated building or area. In some cases, files can be copied or scanned electronically. It is recommended that these items be handled by a certified remediation contractor who has experience with this process. • Set up a zip-door at the warehouse main entry. The remediation team’s access to the area must include decontamination and egress chambers so that the indoor air quality professional has a clean area to dress and access the building at the clearance assessment. Consult with ESG as to how to configure the containment if you are unsure. • Position sufficient air scrubbers throughout the building to remove a minimum of four air volumes per hour. Approximately 5-15 extra-large air scrubbers are anticipated for the warehouse (this number may vary based on the remediator’s recommendations and the PRV testing strategy). Place equipment where it can move the most air and reposition as necessary. Air scrubbing equipment needs to remain in operation until the PRV assessment is complete and/or permission is granted by ESG to remove equipment. Note: the amount of air scrubbing equipment may be adjusted up or down based on airborne particle mass readings obtained during the remediation and upon ESG’s approval. • Use fans, air guns or leaf blowers once every 24 hours to stir up settled dust in the corners and near the floors, walls, and ceilings of the building (note: this will require the owner to remove some items). Direct dust towards the air scrubbers to be filtered out of the air. HEPA pre-filters inside the air scrubbers should be changed or cleaned daily or per the manufacturer’s recommendations. • Run drying equipment as needed to bring RH below 50%. Air movers and dehumidifiers may be required to effectively remove the moisture from the air and building materials. PHASE I: DEMOLITION NOTE: Any moisture issues identified in this report or uncovered during the remediation must be confirmed as having been repaired prior to the replacement of building materials. The main known moisture issue is likely due entirely to the elevated humidity built up within the warehouse being pulled in from the outdoors. It is DocuSign Envelope ID: A9A4637A-BE59-4285-99BE-D253C29FA836