From: Davis, Carlos E. [Carlos.E.Davis@saint

- gobain.com]

Sent: Wednesday, June 08, 2011 9:00 AM

To: Hancy, Cindy Wang

Cc: Fairchild.Susan@epamail.epa.gov; Reeves, David; Alterman, Lauren P.; Angus Crane

Subject: Residual Risk Inquiry from EPA

- CertainTeed Insulation Response

Attachments: Wool Fiberglass Modeling Sources by Co 5 18 11

- CT.xls.zip; KC Labelled Photo.pdf.zip; Athens 2nd Aerial Photo with Stacks highlighted 5_31_11.pdf.zip; Athens Aerial View Showing Stacks 5_31_11.pdf.zip; Chowchilla Labelled Photo.pdf.zip; Athens PFD.pdf.zip

Ms. Hancy:

CertainTeed has reviewed the attached spreadsheet and has made corrections as needed:

<<Wool Fiberglass Modeling Sources by Co 5 18 11

- CT.xls.zip>>

Labeled the site photos with stacks and associated control devices:

<<KC Labelled Photo.pdf.zip>> <<Athens 2nd Aerial Photo with Stacks highlighted 5_31_11.pdf.zip>> <<Athens Aerial View Showing Stacks 5_31_11.pdf.zip>> <<Chowchilla Labelled Photo.pdf.zip >>

And I have converted the Athens Process Flow Diagram from AutoCad to an Adobe pdf.

<<Athens PFD.pdf.zip>>

Please let me know if you have any questions or need any additional information.

Best Regards,

Carlos E. Davis Manager

- Environment, Health a nd Safety Western Region

Saint

- Gobain North America

913

- 544

- 8888 (Cell)

913

- 342

- 6624, ext 53571 (Office)

EHS PortalFrom: Angus Crane [acrane@naima.org]

Sent: Monday, May 23, 2011 3:55 PM

To: Alterman, Lauren P.; Davis, Carlos E.

Subject: Residual Risk Inquiry from EPA

- Response Required

- IMPORTANT

- Availability for Call

Importance: High

Attachments: CertainTeed.zip; Wool Fiberglass Modeling Sources by Co 5 18 11

- CT.xls

Dear Lauren and Carlos:

Please find attached two f iles: 1) a zip file containing the aerial view of all your company’s wool fiber glass manufacturing facilities; and 2) Excel spreadsheets for each wool fiber glass facility with EPA’s data input, including EPA’s understanding of each source’s control dev ice, stack configuration, and stack parameters. EPA is specifically looking for clarification, for some sources, on whether emission sources are routed together to one stack or divided into separate stacks. EPA notes that this is an important
clarific ation for purposes of determining “how to model emissions correctly.”

Each row in the spreadsheet is essentially a “stack” associated with an emission source. For example, if for a particular row the source is listed as “forming, curing, cooling,” EPA understands those three sources to be routed together to one stack. If forming, curing, and cooling are listed in separate rows, EPA has concluded that those sources are routed to separate stacks. EPA requests the facilities to check that the Agency’s interpretation of the configuration is correct, as well as the stack parameters corresponding to the source (columns F

- I). If they are not correct, EPA requests that the facilities correct the spreadsheet. In addition, EPA requests each facility to do the following:

 Confirm the control device listed in Column F. If there is more than one control device, please have the facility list each control device in order (i.e., Furnace  Baghouse  Thermal

Incinerator  Stack).

 Confirm or fill in the Stack IDs in Column J and mark/label them on the aerial view jpg. EPA is only interested in stacks associated with furnaces and FCC processes. Facilities do not need to label or mark stacks associated with other processes. You can send the aer ial views directly to EPA; do not post them to the FTP site.

Please provide this information to Cindy Wang Hancy of RTI at chancy@rti.org and copy Susan Fairchild of EPA at Fairchild.Susan@epamail.epa.gov and David Reeves of RTI at dwreeves@rti.org.

In some instances, EPA asked for company specific information unique to certain locations. EPA was not able to open the file extension that contained the process flow diagram for CertainTeed’s Athens, Georgia facility. Can CertainTeed resend this.