( Z A l S _ }JLHl Haskell Laboratory for Toxicology and Industrial Medicine April 5, 2002 J& M - TO: Study in Rats epeated-Dose Oral Toxicity Gavage Range Finder cc: G.

RECYCLED T -hUtf - 9 V * W \ 04r5^o H90--2D46ay78O: raSluGbcahvraogneicStTuodxyiciintyRats TRADE SECRET Study Title H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats Volume 2 of 4 Laboratory Project ID: DuPont-6554 DuPont-6554 Test Guidelines: U.S.

AR226-3353 1 A Typical Fluorotelomer-Based Polymer ^ueous Dispersion of.... iQ-200 nm Polymeric Particles, > 3 4 ) Ready Biodegradation : Methods 6 8 F(CF2)7!

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3M Corporate Toxicolog\ and Regulator^ Services CERT1FIED MAII June 20, 2006 3M Center.

P-1 TSCADocument Processing Center Attn: Section 8(eVFYI yf fL 7 - 7 i- 3 7 3 S Attachment 2 p- 2 July 28,2006 Page 5 of 5 Axys Analytical Services Laboratory - Form 1A and Form 2 (2 pages) P-2 P-3 s r.......... 7 ' "r *'*.".* *'"' ______;______

Katherine E.

P-1 Taft/ Taft Stettinius & Hollister LLP eet, Suite 1800 /Cincinnati, Ohio 45202-395/ / lei: 513.381.2838 /Fax 513 381 0205 / www.taftlaw.com Cincinnati / Columbus / Cleveland / Dayton / Covington Robert A.

SEVERN TRENT STL STL Chicago 2417 Bond Slreel University Park, IL 50465 Tel: 70S 534 5200 Fax: 708 534 5211 www.stl-inc.com SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER; 232883 Prepared For: Weston Solutions/ Inc: 1400 W e s t o n Way .

A (L & & G - 0 7 / / ACUTE AQUATIC TOXICITY TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).

b4> NOTE TO FILE - OPPTS 50639 October 23, 2000 FROM: Karen Lannon SUBJECT: Revised PFOS Hazard Assessment M S A 6 _ 03lf-& Attached is a revised PFOS Hazard Assessment.

35pp. 3M Katherine E.