From: "Frazier, Alicia S" <ASFrazier**At_Symbol_Here**MARATHONPETROLEUM.COM>
Subject: Re: [DCHAS-L] [EXTERNAL] [DCHAS-L] Atlantic Article on Ventilation
Date: Mon, 3 Aug 2020 19:11:25 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: SN1PR16MB230143490DAA2C98BFD9ADCDB94D0**At_Symbol_Here**

Most people, including the CDC, have been making all their guidance on assumptions that primary transmission is from large droplet entrainment of particulate which has never made sense to me.  And the fact that clusters been in cruise ships, meat packing plants and choir rooms where people are in close prolonged contact in poorly ventilated areas points to spread by aerosolization.   While HEPA filters or filters with MERV ratings of 15 or greater with an increase of outside air intake is not an absolute cure all it certainly would be a good place to begin to reduce the concentration of active virus particulate in the air, then address distancing and maximum number of people in a room.


Alicia Frazier  | 19100 Ridgewood Parkway | San Antonio, TX  78259

Direct: 210-626-6615 | Mobile: 210-412-3253  


From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Pam Auburn
Sent: Friday, July 31, 2020 3:30 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [EXTERNAL] [DCHAS-L] Atlantic Article on Ventilation


I am certainly not an expert on this subject and have been thinking about it as we plan for a limited return to campus


This piece certainly did not "clear it up" but did placed some of the arguments in perspective 


Pamela Auburn, PhD

2041 Branard

Houston TX 77098

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