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).

ACUTE AQUATIC TOXICITY TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may also be referredtoas PFOS, FC-95, or as a component of FC-203. (1Octanesulfoniaccid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (MUMMICHOG) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may also be referredto as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonicacid)(CAS # 2795-39-3).

BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatew,hich may also be referredto as PFOS, FC-95, or as a component of FC-600. (1-Octanesulfonicacid,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 productionlotnumber was not noted.

AR226-2760 FOR OU POUT USE ONLY cc; I.

my Copies to.

CorporatHeealthPhysics 3M Center2,20-2E-02 CorporatOeccupationMaeldicine PO Box 33220 CorporatPeroductResponsibility St.PaidM,N 55133-3220 CorporatTeoxicology 6517331110 3M MedicalDepartment SerumFluorochemictarlendsofout-of-counrteysidenitnsCLUE 1(1974a)nd CLUE ][([1989e)pidemiologiincvestigations.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:Perfluorooctanesulfonylamido(ethyl)acemtaaytea;lsobe referredtoas PFOSAA, FC-128 oras themajor component of FC-127, FC-129, FC-109,or FC-109-X.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:Perfluorooctanoiaccid;may alsobe referredtoas PFOA, FC26, or FX-1001.

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-- - i | | | | | - - AR2IE- 0106 EFE-I3 TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) EST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,56,6,7,7,8,8,8- heptadecafiuoro-, potassium salt, CAS # 2795-39-3) Remarks field: "The test substance is a white powder (3M Lot 583) of uncharacterized purity.

FE-RO ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: aPPceFirdOf,lSu1o,Dr1oE,o2Ac,t2s.aa3nl,et3,s,uF4lC,f4-o,9n59a,,t5e,o,6r,D63,EM7A,7S,saa8lm,t8p;,l8me-ahNyeop.atla2ds.eocba(fe1l-urOoecrftoea-rn,reescduoltfmoopnadis.c: with 2,2"iminobislethanol] (1:1), CAS # 70225-14-8) R(aepmparrokxism:atTeelsyt2s5am%ptleestissaubmsitxatnucree oafndth7e5te%stwastuebrs).tanAclevianlwuaetserreported relate to this mixture.

BIOSEARCH.

Submitted to: BIOSEARCH, INC.

BIOACCUMULATION (ANALYTICAL ONLY) TEST SUBSTANCE Identity: Perfluorooctanoiaccid,ammonium salt;may alsobe referredto as PFOA ammonium salt,Ammonium perfluorooctanoateF,C-1 16,FC-1 26, FC-169, or FC-143.