MEMORANDUM

To:	Margaret Sheppard, U.S. EPA

From:	Charlotte Coultrap-Bagg, Reva Rubenstein, Mark Wagner, ICF
International 

Date:	March 31, 2008 

Re:	Review of Potential Foam Degradation Products from Formacel® B
Blowing Agent Blends

(EPA Contract Number EP-W-06-003, Task Order 18 Task 05).



At the request of the EPA COR, ICF reviewed DuPont Fluoroproducts’
SNAP submission for the use of Formacel® B blowing agent blends (blend
of HFC-1               ) for the Polystyrene, Extruded Boardstock and
Billet foam end uses. Specifically, ICF reviewed the information
provided on the potential breakdown products. 

Based on ICF’s review, there is sufficient information provided on the
potential breakdown products. The data provided indicate that there are
no risk issues since any impurities noted are present in trace
amounts.  Even testing at temperatures up to 200°C, no breakdown
products were apparent.

Please contact Reva Rubenstein at 202-337-6393 with any questions or
comments.

