EXP COVID-19 Offices White Paper

CONCLUSION | 31

PATH THREE (SMALL DROPLETS): PRIORITY • MERV 13+ air filtration • High ventilation rates and airflow patterns that direct fresh air to and draw contaminants out of the breathing zone • Negative pressurization from high-risk areas to low-risk areas • UVC to capture and inactivate pathogens that are entrained into the HVAC system ADDITIONAL SYSTEM MEASURES • Portable High-Efficiency Particulate Air (HEPA) with UVC air cleaning systems in high occupancy areas (e.g., lobbies, breakrooms and conference rooms) • Ionization in the HVAC system • Upper Air UVC • CosaTron air treatment in large open areas served by recirculating HVAC systems

PATH FOUR (FECAL ORAL): PRIORITY • High ventilation rates and airflow patterns that draw contaminants to the WC • Negative pressurization from high-risk areas to low-risk areas • Trap Primers and /or Trap Guards on all floor drains

• Exhaust at each WC (at WC rim) ADDITIONAL SYSTEM MEASURES • Upper Air UVC units

• WC Stall UVC with occupancy sensors and stall door interlock

• Ionization in the HVAC system

In addition to the proactive measure above, CDC guidelines should be followed. Each measure we take is a link to a chain reaction – effectively done can support the reduced transmission of COVID-19. Our team of experts believe these increased and robust efforts can support safe environments for employees and office visitors.