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PREPARING FOR DAY ONE

• Set HVAC to normal operation settings • Set boilers and/or assisted cooling systems to normal operation settings • Set hot water heaters to normal operation settings • Verify operation and condition of water in cooling towers • If condenser water system has been inactive for a period of more than seven days, run diagnostics with water treatment contractor • Ensure appropriate testing in all high-risk locations, per ASHRAE 188 standards, for proper Legionella control • For wastewater treatment plants, return inspection and treatment schedule to normal operation settings Ventilation • Complete a fresh HVAC/IAQ review prior to re-occupancy. Sites should focus on maintaining slightly higher fresh air ventilation rates and filtration efficiency to the extent practical • Change existing filters prior to flushing the building, which will reduce the risk of spreading any lingering contamination Refer to manufacturer’s recommendations for filter selection. Use the highest efficiency-rated filter recommended/allowed by the manufacturer (If possible, MERV 13 or better) and reference any WHO guidelines. You can find Cushman & Wakefield’s recommendations for filter selection here. • When replacing air filters (including HEPA filters): • Use proper safety procedures and PPE • Avoid hitting, dropping or shaking the filter • Do not use compressed air to clean a filter, which could cause materials in the filter to become airborne • Properly dispose of used filters and PPE/gloves in a sealed plastic bag upon removal • Dispose filters in a manner to minimize exposure to property and immediately transport to waste collection via shortest or, ideally, outdoor routes. Avoid any typically occupied spaces and choose routes that include freight elevators and minimally used support spaces • Flush building with fresh air based on design standards to LEED, BREEM, WELL building standards, if possible, for a minimum of 24 hours and ideally for 48 to 72 hours • For specific Air Change plan, the rate can be calculated: n = 60 q / V where » n = air changes per hour (1/h) » q = fresh air (make up air) flow through the room (CFM) » V = volume of the room (Cubic Feet) • After the building is flushed, building engineers should: • Change the air filters as an added precaution, following manufacturer’s recommendations for filter reconditions • Increase fresh air intake

RECOVERY READINESS: TRI-STATE

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