August 7, 1981 TO: FROM: J.

PERSONAL AND CONFIDENTIAL CC: J.

^ 2.24- KoZQ CC: R.

i4l.-2fc-03T5 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identify: Perfluorooctanesulfonyl fluoride; may also be referred to as POSF, or FX-8. (1-Octanesulfonyl fluoride, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, CAS #30735-7).

AJP003593 AR226-1988 BEST COPY AVAILABLE $9 "K. y x. > ~Q4 4- *k a V ^a l"ur I- o -a 4- 4" s dj i i: ?

- 0 7 Q -!

Pathology and Toxicology Riker Laboratories, Inc. r"s Building 270-3S-05, 3M Center 'I St.

Internal Correspondence de: M.

W A 26- l/J-IO C-8 LEVELS IN DRINKING WATER DISTANCE FROM NO. 5 OUTFALL (KXX.CS ) PPB 1984 1987 1988 PARKERSBURG 7.50 UPSTREAM ND ND WASH WORKS 0.50 UPSTREAM ND ND ND LBECK WATER DISTRICT 0.25 DOWNSTREAM 0.25 DOWNSTREAM 1.1 1.9 1.8 1.5 1.9 1.4 LITTLE HOCKING 3.00 DOWNSTREAM 0.6 ND ND RVENSVOOD 29.0 DOWNSTREAM ND ND = NOT DETECTABLE 10 6 3 5-3 - 03/08/89 - WS C:kit A TTACHMENT 2 000006

BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, FC116, FC-126, FC-169, or FC-143.

f FOR DU PONT USE ONLY AR226-2942 Du Pont HLR 466-89 Study Title Inhalation Approximate Lethal Concentration (ALC) of Author Rudolph Valentine Study Completed On September 6, 1989 Performing Laboratory E.

E.

Experiment No.: Conducted At: Dates Conducted: Conducted By: ARXtG-0 237 Primary Skin Irritation Test with T-3608 in Albino Rabbits 0984EB0368 Pathology and Toxicology Riker Laboratories, Inc.

2 . 4 5 R C V t a -79 mm> tJTil.iSKEO'BO; E 1. d u P o n t d e N em o u r s & C o m p a n y IN C O R P O R A T E D W il m in g t o n .

i Z -45 R C V I* 79 E. ] .