It has been used extensively as a surfactant in the manufacture o f Teflon (DuPont, Wilmington, Delaware).

(dba Exygen Research) (Exygen) from DuPont Corporation.

It has been used extensively as a surfactant in the manufacture of Teflon (DuPont, Wilmington, Delaware).

P-1 "McCrea, Deborah" <mccrea@taftlaw.com> 11/02/2009 11:42 AM bcc Subject 11/02/2009 Letter To EPA Docket Center i 3 ^i0:35 Taft / Deborah McCrea / Legal Assistant Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800 Cincinnati, Ohio 45202-3957 Tel: 513.381.2838 Fax: 513.381.0205 www.taftlaw.com / mccrea@taftlaw.com Internal Revenue Service Circular 230 Disclosure: As provided for in Treasury regulations, advice (if any) relating to federal taxes that is contained in this communication (including attachments) is not intended or written to be used, and cannot be used, for the purpose of (1) avoiding penalties under the Internal Revenue Code or (2) promoting, marketing or recommending to another party any transaction or matter addressed herein.

Sponsor Representative Dupont Corporation Date Date Date TABLE OF CONTENTS T IT LE .........................................................................................................

(dba Exygen Research) (Exygen) from DuPont Corporation.

Study-No 2 Characterisation Data of the Test item Purity Appearance Water solubility Stability in water Density Yellowish solid wax 134 pg/L at 12 degree C, Std 29 pg/L, n=8 (DuPont, 2002) 137 pg/L at 25 degree C, Std 53 pg/L, n=17 (DuPont, 2002) Stable at test conditions Ca. 1.7g/cm 3 Expiry date Recommended storage Storage at testing facility Retention Identification parameter at testing facility Unlimited if stored under the recommended conditions.

"McCrea, Deborah" <mccrea cQr taftlaw.com> 11 /02/2009 11 :42 AM To NCIC OPPT@EPA cc "Bilott, Robert A ."

We first excluded individuals who had a self-reported history of employment by DuPont because of likely high exposure levels at the chemical plant (5%).

., Dupont Sandra R.

Giraud4 * Corresponding Author phone: (937)229-3604; fax: (937)229-2503; email: taylorp @ udri. udayton. edu 1 Environmental Engineering Group, University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0114 2 DuPont Chemical Solutions Enterprise, 4417 Lancaster Pike, BMP23-2233, Wilmington, DE 19805 3 DuPont Corporate Center for Analytical Sciences, P.O.

MATERIAL SAFETY DATA SHEET Sopyright, 19~7, Minneso_a Mining and Manufacturing Company.

Representatives of the DuPont Company (DuPont) selected three members (Drs.

It was reasonable for DuPont to conclude that two children with unrelated and very different congenital anomalies, who were born in 1978 and 1981 to mothers who worked at DuPont, were, at best, case reports that were not statistically significant, did not demonstrate causation, and did not warrant further investigation, since none of the criteria for establishing a causal relationship between exposure to PFOA and adverse reproductive and developmental effects were met. 4.]

Zonyl FSA was purchased from DuPont (Aldrich, Milwaukie, W l) prior to 2012.