AR226-3015 Study Title Approximate Lethal Dose (ALD) of H-21095 in Rats Laboratory Project ID Haskell Laboratory Report No. 290-95 Author M.

AR226-3054 DuPont HtR-842-96 I 1vmph Node Assay Screen with H22051 The Local Lymph Node Assay (LLNA) screen with H 2 2 0 5 | B H | wf s conducted in female CBA/JHsd mice.

TRADE SECRET AR226-3081 DuPont HL-1997-00867 Study Title H-22762: Oral Approximate Lethal D ose (ALD) in Rats Laboratory Project ID: HL-1997-00867 Author: Tracy A.

P-1 3 7 Z > 3M ENVIRONMENTAL LABORATORY REPORT NO.

A R U & -0 0* 5 PFOS: A 96-HOUR TOXICITY TEST W ITH THE FRESHWATER ALGA (Selenastrum capricomutum) FINAL REPORT WILDLIFE INTERNATIONAL LTD.

CHRONIC TOXICITY TO FRESHWATER INVERTABRATES (Daphnia magna) 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: The test substance is a white powder.

ACTIVATED SLUDGE RESPIRATION INHIBITION TEST 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: The test substance is a white powder.

HAZLETON WASHINGTON 9 2 0 0 LEESBURG PIKE VIENNA.

H- NOTOX Safety & Environmental Research B.V.

CAS Number 335-77-3 (acid) & 67906-42-7 (ammonium salt) 3M Company 4 . a 6 j T 7 f Voluntary Use and Exposure Information Profile Perfluorodecane sulfonate I.

t4 R & H 6 - 077/ ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE________________________________________________ Identity: Mixture containing perfluorooctanesulfonate which may also be referred to as PFOS, FC-95, or as a component of FC-203FC. (1Octanesulfonic acid) (CAS # 2795-39-3).

M A S 1 6 -O S 4 4 TO XIC ITY TO AQUATIC PLANTS 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).

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received __________________ __________ DuPont-7473 TRADE SECRET Study Title Perfluorooctanoic Acid: Toxicokinetics in the Rat Laboratory Project ID: DuPont-7473 r-o CmO ~XJ i cn o"~--OoH TzxJ ~r. o o F3 o Test Guidelines: U.S.

AR226-2541 RESPONSE TO INFORMATION REQUESTED REGARDING APRIL 1992 VI REPORT (REFERENCE; EPA REGION III LETTER DATED MAT 5, 1997) DUPONT WASHINGTON WORKS WVD045875291 Responses to information requested in the referenced EPA letter are presented below.