ADVANCED BIOANALYTICAL SERVICES, INC.

Subr:iittetdo: BIOSEARCH I.I@4C.

BIODEGRADATION TEST SUBSTANCE Identity:Perfluorooctylsulfonadtied,ecyldimethylammoniumsalt;may also be referredto as Fluoroalkyalmmonium derivative[.1Decaminium, N-decyl-N,N-dimethyl-s,altwith 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecaf-luoro-1 octanesulfoniaccid(1:1)C,AS # 251099-16-8] Remarks: The 3M productionlotnumber was Lot 1.

ACTIVATED SLUDGE RESPIRATION TEST SUBSTANCE INHIBITION TEST Identity:Perfluorooctylsulfonadtied,ecyldimethylammonium salt;may alsobe referredtoas Fluoroalkyalmmonium derivative[.1Decaminium, N-decyl-N,N-dimethyl-s,altwith 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafl-uoro-1 octanesulfoniaccid(1:1),CAS # 251099-16-8] Remarks: The 3M productionlotnumber was Lot 1.

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonawthei,ch may alsobe referredtoas PFOS, FC-95,oras a component ofFC-203. (1Octanesulfoniaccid)(CAS # 2795-39-3).

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (SCUD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonawthei,ch may alsobe referredtoas PFOS, FC-95,oras a component ofFC-203. (1Octanesulfoniaccid)(CAS # 2795-39-3).

EFFECT OF DEGRADATION ON FOAMING TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-203A or FC203 NFP. (1-Octanesulfoniacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredto as PFOS, FC-95, or as a component of FC-603F. (1Octanesulfonicacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredto as PFOS, FC-95, oras a component of FX-3103. (1Octanesulfoniaccid)(CAS # 2795-39-3).

IN VITRO MICROBIOLOGICAL MUTAGENICITY OF 3M COMPANY'S COMPOUND T-2997CoC ASSAYS --71 IF]y@ Final Report January 1981 By: L,,@ Kristien E.

ATTACHMENT TO LETTER TO C.AUER DATED AUGUST 31,2000 SUPPLEMENTAL SUBMISSION FOSA or PFOSA Perfluorooctanesulfonamide MedicalSurveillanacnedEpidemiologic See item I under PFOS: InterimReport #1,Determinationof Serum Half-Livesof SeveralFluorochemicals,June 8,2000.

ATTACHMENT TO LETTER TO C.

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