Redefining the home as a workplace and school environment
The following was sent earlier this week to Dr. Ron Chapman, Yolo County Health Officer, and the Yolo County Board of Supervisors:
“Dear Dr. Chapman and Supervisors,
This is a follow-up to my early queries and comments about advice on HVAC systems and ventilation of residences and more recently links I sent with evidence on how SARS-CoV-2 particles might be distributed even through normal respiration. It’s excerpted from what’s here.
Lately, many store workers in California have tested positive for COVID-19. There's now CDC guidance for essential workers that says to "… increase air exchange in the building.". The EPA also just sent out guidance on safety in school environments, which is still useful even though our schools are closed. It reminds schools to maintain their HVAC system. ASHRAE provides a link to an earlier version of the above-mentioned guidance from the CDC. Finally, there's also OSHA guidance on preparing workplaces for COVID-19. It's summarized here and says that the Engineering Control process includes "installing high-efficiency air filters" and "increasing ventilation rates in the work environment."










