From: Howard, Jodi  
Sent: Wednesday, September 03, 2014 2:33 PM 
To: 'Richard Krock' 
Cc: J.C. Walker; Clark, Susan; Simpson, Alice; (john.hobbs@wacker.com); Wyatt, Christina; Mary 
Bachynsky; Lassiter, Penny; Kataoka, Mark 
Subject: RE: Vinyl Institute Letter on Process Flow Diagrams for Copolymer S114 Request

Mr. Krock,

We have reviewed your “generic” process flow diagram and have found it to be acceptable for 
responding to the section 114 requests. I would ask that each of the facilities not only indicate the 
number of pieces of equipment, as you have shown, but also whether the equipment is atmospheric 
or rerouted to the recovery system or back into the process unit.

Thanks.

Jodi Howard


From: Richard Krock [mailto:rkrock@vinylinfo.org]  
Sent: Monday, August 25, 2014 2:36 PM 
To: Howard, Jodi; Lassiter, Penny; Kataoka, Mark; andrew.bouchard@epa.gov 
Cc: J.C. Walker; Clark, Susan; Simpson, Alice; (john.hobbs@wacker.com); Wyatt, Christina; Mary 
Bachynsky 
Subject: Vinyl Institute Letter on Process Flow Diagrams for Copolymer S114 Request

Dear Ms. Howard,

The attached letter and example process flow diagram are follow-up communication from our July 21, 
2014 discussion on the amount of detail necessary in process flow diagrams.   VI’s Copolymer Subgroup 
appreciates your consideration of the proposed simplification.  Please do not hesitate to contact me 
with any questions or additional information.  

Thank you.


