ARI6- 013 EE-/F MICROBICS MICROTOX TOXICITY TEST TEST SUBSTANCE Identity: Perfluorooctanesulfonate, Lithium salt; may also be referred to `as PFOS Li salt, FC-94, or FC-94-X. (1-Octanesulfonic acid, 1,1,2,2,3,34,4,55,6,6,7,7,8,8,8-heptadecafluoro-, lithium salt, CAS # 29457-72-5) Remarks: The test sample is a mixtureof the test substance in water (approximately 24.5% test substance and 75.5% water).

ARR26 - 0770 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST IESTSUBSTANCE~~~ Identity: Mixture containing perfiuorooctanesulfonate which may also be OrecftearnreesdutlofoansicPFacOiSd,) (FCC-A9S5#, 2o7r9a5s-3a9-c3o)m.ponent of FC-203FC. (1- Remarks: The 3M production lot number was not noted.

Toxicological Summary PFOS Dietary Acute Mallard Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: p1o-tOacstsainucsmuslaflot,niCcASa#cid2,7915,-13,92323,3,4:4,5,5,6,61.7,888-heptadecafluoro-, Remarks: Tsthoeredtesutndseubrsatamnbcieenits caonwdhiittieonpsoawndderpu(ri3tMy wloats#o2r1i7g)i.nalTlyhedestaemrpmlienedwatso bteech9ni0qu4es%.

AR226-2425 t-S.7 REV. 5-0% <TMi> E. 1.

AR226-3126 TRADE SECRET Study Title H-24119: Bacterial Reverse Mutation Test in Salmonella typhimurium and Escherichia coli Laboratory Project ID: DuPont-3220 TEST GUIDELINES: U.S.

ACUTE TOXICITY TO AQUATIC INVERTABRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity:Mixturecontainingperfluorooctanesulfonawtheich may also be referredto as PFOS, FC-95, oras a component of FC-201 F.

AR26- 0496 BIOCONCENTRATION ITEESTSSUUBSTANNCCEE 000000000 Identity: PPeFrOflAuoarmoomcotnaniouimc ascailtd,,Aammmmoonniiuumm psaelrtf;lmuacryoaolcstaoncbaeter,efPeFrrOe,d FtoC-as 116, FC-126, + ammonium FC-169, or salt, CAS# 3F8C2-51-4236.-1()Octanoic acid, pentadecafiuoro- Remarks: The test sample is FC-143.

ARY16-0525 ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC116, FC-126, FC-169, FC-143 or as the major component of FC1015.

QEHR - 0400. 373 (0008117828) 7 5.

AR 236 0873 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: ArefmeirxrteudretocaonstPaiFnOiSng, pFeCr-f9l5u,oroorocatsanaescuoimfponoanteen,twohficFhC-m3a01y7.also(1-be Octanesulfonic acid) (CAS# 2795-39-3).

AR226-1735 PFOS: A DIETARY LC50 STUDY WITH THE MALLARD WILDLIFE INTERNATIONAL LTD.

3M Environmental Technology and Services PO Box 33331 St.

AR226-2541 RESPONSETO INFORMATION REQUESTEDREGARDINGAPRIL 1992 VI REPORT (REFERENCE;EPA REGION III LETTER DATED HAY 5, OUPONT WASHINGTONWORKS 1997) WVD045875291 Responses to information requested in the referenced EPA letter are presented below.

92091 SPONSOR ElfAtochemSA.

AR226-3135 TRADE SECRET Study Title H-24256: Local Lymph Node Assay (LLNA) Laboratory Project ID: DuPont-3548 AUTHOR: Gregory S.