BACK TO MAIN ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE_________________________________________ Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC-116, FC-126, FC-169, or FC-143.

BACK TO MAIN SOIL ADSORPTION (METHOD DEVELOPMENT / PILOT STUDIES) TEST SUBSTANCE_________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample was radiolabeled (isotope and labeling position not specified).

02/28/2001 ENVIRONMENTAL LABORATORY ARCHIVED FINAL REPORT B A C K T O MAIN LAB REQUEST NO. 8442 REQUESTOR NAME: EAR DEPARTMENT: 0535 PROJECT NO: 9970012600 DATE RECEIVED: 09/07/1982 DESC: ENVIRONMENTAL SCREEN ON L-6778 CONTRACT LAB(S): EXP COMP DATE: 11/12/1982 DATE COMPLETED: 11/09/1982 PROJECT LEAD: PHONE NO: 3M FAX NO: 651-778-6176 EVAPORATE TO DRYNESS UNDER AIR OR N2.

3M Medical Department Study: T-6295.12 Analytical Report: FACTTOX-110 LRN-U2849 Table 7: Ambient-Temperature Stability of PFOS in Rat Serum After 24 Hours Run 11 QC (Theoretical Cone.)

AR12&-0IOX DIETARY ACUTE MALLARD DUCK STUDY : -W TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder.

3M MEDICAL DEPARTMENT CORPORATE TOXICOLOGY ARUrO/50 To: Andrew Seacat 220-2E-02 cc: John Butenhoff 220-2E-02 From: MarvCase 220-2E-02 Subject: Pathology Review Date: 22 July 1999 On 19 July 1999 during my visit at Covance, Madison, I did a slide review of selected tissue sections on the PFOS six-month monkey toxicity study (Study 6329-223).

Attachments to Letter to C.

ARu .6-0337 ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: N-Ethylperfluorooctanesulfonamide; may also be referred to as U1464, EtFOSA, EtPOSA, F-6309, or FX-12. (1Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-N-ethyl-, CAS # 4151-50-2) Remarks: Material is a white solid.

BIOACCUMULATION (ANALYTICAL ONLY) AR23&0354 TEST SUBSTANCE_______________ Identity: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE Alcohol or FM-3422. (1-Octanesulfonamide,N-ethyl1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-, CAS #1691-99-2) Remarks: Material is an off-white, waxy solid of uncharacterized purity.

9n&uM/iuiL B IO - T E S T JaJxm iotiei,, Jnc. 1810 f r o n t a g e r o a d NORTHBROOK.

M AS6 - 07- ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE___________________________ Identity: Mixture containing periluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CF-X or FC-203CF. (1-Octanesulfonic acid) (CAS #2795-39-3).

Ar < - 0223 BIODEGRADATION (BOD/COD) TEST SUBSTANCE_____ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-600. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The 3M production lot number was not noted.

AA 6 - Oi3^ ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-600. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The 3M production lot number was 2367.

A ft. 3.6 - 0 & < f ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-600. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The 3M production lot number was not noted.

AR9.A 6 - $ l BIODEGRADATION (BOD/COD) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FX-3104. (1Octanesulfonic acid) (CAS # 2795-39-3).