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AR.A3.6 - 07^6 A C T IV A T E D S L U D G E R E S P IR A T IO N IN H IBITIO N T E S T T E S T S U B S T A N C E ___________________________________________________ Identity: A mixture containing perfluorooctanesulfonate; m ay a lso be referred to a s P F O S , FC-95, or a s a com ponent of F C -2 0 3 C and L-5440. (1-Octanesulfonicacid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, C A S # 2795-39-3) R e m arks: The 3M production lot num ber w as 501.

M A A 6 - OZH3 ACUTE TO XICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE_______________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-602. (1Octanesulfonic acid) (CAS # 2795-39-3).

A R &S.6 _ O W BIODEGRADATION (BOD/COD) T E S T SU BSTAN CE___________________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFO S, FC-95, or as a component of FC-3041. (1Octanesulfonic acid) (C A S # 2795-39-3).

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A R W -o H IJ ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: [2-(N-Ethylperfluorooctanesulfonamido) ethyl acrylate; may also be referred to as B1228, D-1, EtFOSEA, or FX-13. (2-Propenoic acid, 2[ethyl[heptadecafluorooctyl)sulfonyl]amino]ethyl ester, CAS # 423-82- 5) Remarks: Material is an amber solid.

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-AH AS.G _ o 8 0 5 TO XICITY TO AQUATIC PLANTS TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate; may also be referred to as PFOS, FC-95, or as a component of FC-206C and 81-2/8. (1-Octanesulfonicacid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Rem arks: The test sample is FC-206C.

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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).

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AR.A3.6 - 07^6 A C T IV A T E D S L U D G E R E S P IR A T IO N IN H IBITIO N T E S T T E S T S U B S T A N C E ___________________________________________________ Identity: A mixture containing perfluorooctanesulfonate; m ay a lso be referred to a s P F O S , FC-95, or a s a com ponent of F C -2 0 3 C and L-5440. (1-Octanesulfonicacid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, C A S # 2795-39-3) R e m arks: The 3M production lot num ber w as 501.