The Renew™ Air Treatment System dispenses Grignard Pure™, an antimicrobial air treatment solution. When deployed in mass transit environments, the system will help protect passengers, operators and other transit employees on-board transit buses and rail vehicles from the spread of the virus that causes COVID-19. Grignard Pure is expected to kill 98 percent of SARS-CoV-2 virus particles in the air, where transmission is most likely. The EPA has approved a Section 18 Public Health Emergency Exemption for the use of Grignard Pure in several states. Among the approved use sites are intrastate transit and transportation.