aN : eT ba mevan aopr E

5 PTRSONAL AND CONFIDENTIAL : .: AL2267~1619 cc: J.

eororol ines coun WILMINGTON.

- A226-/633 C-8 IN OFF-PLANT WATER SYSTEMS NONE DETECTED IN UPSTREAM PUBLIC WATER SYSTEM, o NONE DETECTED IN WASHINGTON WORKS' DRINKING WATER. o DETECTABLE LEVELS FOUND IN TWO DOWNSTREAM PUBLIC WATER SYSTEMS.

Al226- 1734 Study No.

AL2261770 arme DuPont Legal |3 hamAConrdporreaateVC.ouMnasellinowski DW1u0i0Pi7onngMtairoLkeneg,talDSteDrl-ea7ewt0a7r8e 19898 Foc" Smet E-mail: AMnadrleia.nVo.wski@usa.dupont.com FYI- 0S04. 0157 mn | or275_ 07 3 | T HARE ERRIT AERTII ET April 29, 2004 VIA OVERNIGHTMAIL CONTAINS NO CBI Mr.

BACK TO MAIN STABILITY IN WATER (PHOTOLYSIS) TEST SUBSTANCE Identity: Perfluorooctanesulfonate-potassium salt.

BACK TO MAIN ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: Perfluorooctanoic acid, tetrabutylammonium salt; may also be referred to as PFOA tetrabutylammonium salt, tetrabutylammonium perfluorooctanoate, N2803-2, or as a major component of L-13492.

BACK TO MAIN CEntrE Analud tica-l Laboratories.

E err1~ESEARCH AR226-1864 OccupatIonal andEnvironmental Health Analysts of perftuorooctenotCAcId (PFOA) In Human Serum Samples \ E~cygenReport No.

: ARa22.6-1896 : RoiIES IPCNORFNOOFTRIEMDCAETTNIITOOINNAULSNUBDBUEJSREICNTTEHSTESO `RTEODAXAINCCDTSOEUTDBHSFETRRAONLMCAETWSHSICSHODANOSTCRBUOEMLEENANCTT Toxicokinetic Screenof FC Title: Methyl Carboxamide (T-7483) In Rats.

February 1, 2005 Data ValOiadkatdiaolnefPorroPjeFcOtSIPFOA (MDH Sample Numbers 200501211-200501219) +dSe2almivCpelrueentdirldeicarneeaiclptytls:yisf.Sraommptlheesfiweeldreburtewcesirveednoitnognooicde.condSiatmiopnl.esSwaemrpelesstowreedreat C JtHoaonltuhdaeirnlygab2To7ri,amt2eo0sr0:y5.oSnaTJmhapenluaeansarlywye2sr5ie,s 2dc0ao0lt5le.ecwtaeAsdnaJwliaytnshuiisanro1yf42td5h,aey2ss0a0omf5plsaeansmdptwloeeokrcepolldaoeclaeivaenred No data were qualified.

AR226-2083 .,_..:-;;^.-.' . .,^^^.

,TestResi?

AR226-2243 /3?