BIODEGRADATION TEST SUBSTANCE Identity:Perfluorodecanesulfonatea,mmonium salt;may also be referred to as PFDS, FC-121-X, or 3M Sample E2112 and E2566-1.

ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity:Perfluorooctanoiaccid,ammonium salt;may alsobe referredto as PFOA tetrabutylammoniumsalt,Ammonium perfluorooctanoatePFO, FC-1 16, FC-1 26, FC-1 69, FC-1 43 or as a major component of FC-1015 or FC-1 015-X.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:Mixturecontainingperfluorooctanesulfonawtheich may alsobe referredto as PFOS, FG-95, or as a component ofFC-201 F. (1-Octanesulfonicacid,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-p,otassium salt,CAS # 2795-39-3) Remarks: The 3M productionlotnumber was not noted.

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component of FC-787 or FC787X. (1-Octanesulfoniacid)(CAS # 2795-39-3).

ATTACHMENT TO LETTER TO C.AUER DATED AUGUST 31,2000 SUPPLEMENTAL SUBMISSION PFOSAA Perfluorooetanesulfonylamido(ethyl)acetate MedicalSurveillancaend Epidemiologic See item I under PFOS: InterimReport #1, Determination of Serum Half-Livesof Several Fluorochemicals,June 8, 2000.

Katherine E .

36) Discussion of the determination of Air-Water partition coefficient of PFBS from vapor pressure and water solubility SANITIZED DEC 0 9 2003 Determination of the Air-Water Partition Coefficient of Perfluorobutane Sulfonate, potassium salt (PFBS) from its Vapor Pressure and Water Solubility Introduction: The air-water partition coefficient (KAw) is a unitless way of expressing the Henry's law constant (H) of a chemical substance.

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ARRARE --3512 404 i ARG _ 33% ~ TRANSLATION | SUMMARY OF BIOCONCENTRATION STUDY REPORT 1.