AR226-1486 ENVIRONMENTAL AND HEALTH ASSESSMENT OF PERFLUOROOCTANE SULFONIC ACID AND ITS SALTS August 20, 2003 Prepared by 3M in consultation with Jack Moore, D.V.M., DABT, Hollyhouse, Inc.

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Test Substance: Toxicological Summary Pros Dietary Acute Northern Bobwhite Study Perfluorooctanesulfonate (PFOS) Structure: Remarks: p1o-tOacstsaineusmuslaflot,niCcASa#cid2,7951,.13,92..32.3,3,4,4,5,5,6,6,7,7.8,8,8-heptadecafluoro-, The test substance is stored under ambient caonwdhiittieonpsoawndderpuGriMty wloats#o21r7g)i.nallTyhedestaemrpmlienewdatso bteechn9i0q.ue4s9.% determined Ibny 10 a LsCu/bMsSeq,uen'tH-aHnaMlRy,sis "oFf-tNhMeRestandsubcslteamnecnet,alpuraintaylwysaess be 86.9%.

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AR226-2632 20 AR226-2632 DOR PROJECT SRCNAME THEME DATESMPL SMPLT SAMPLE_NUMBER TOP BOTTOM FILTERED CASNO A GW SAMPLING 3/03 05A Groundwater 3/11/2003 FS MW-05A T 3825261 F GW SAMPLING 3/03 118 Groundwater 3/11/2003 FS MW-118 T 3825261 F GW SAMPLING 3/03 119 GW SAMPLING 3/03 303 Groundwater Groundwater 3/11/2003 FS 3/11/2003 FS MW-119 MW-303 T 3825261 F T 3825261 F GW SAMPLING 3/03 308 Groundwater 3/11/2003 FS MW-308 T 3825261 F GW SAMPLING 3/03 311 Groundwater 3/12/2003 FS MW-311 T 3825261 F GW SAMPLING 3/03 314 Groundwater 3/11/2003 FS MW-314 T 3825261 F GW SAMPLING 3/03 315 Groundwater 3/10/2003 FS MW-315 T 3825261 F GW SAMPLING 3/03 316 Groundwater 3/12/2003 FS MW-316 T 3825261 F GW SAMPLING 3/03 317 Groundwater 3/12/2003 FS MW-317 T 3825261 F GW SAMPLING 3/03 GW TREATMENT 103 GW SAMPLING 3/03 GW TREATMENT 401 Other liquid Other liquid 3/11/2003 FS 3/11/2003 FS GW TREATMENT 103 GW TREATMENT 401 T 3825261 F T 3825261 F GW SAMPLING 3/03 N10-2 Groundwater 3/10/2003 FS MW-N10-2 T 3825261 F GW SAMPLING 3/03 N17-1 Groundwater 3/11/2003 FS MW-N17-1 T 3825261 F GW SAMPLING 3/03 N19-1 Groundwater 3/12/2003 FS MW-N19-1 T 3825261 F GW SAMPLING 3/03 N23-1 Groundwater 3/10/2003 FS MW-N23-1 T 3825261 F GW SAMPLING 3/03 N25-1 Groundwater 3/11/2003 FS MW-N25-1 T 3825261 F GW SAMPLING 3/03 N26-1 Groundwater 3/11/2003 FS MW-N26-1 T 3825261 F GW SAMPLING 3/03 N28-1 Groundwater 3/10/2003 FS MW-N28-1 T 3825261 F GW SAMPLING 3/03 SPAARBEKK Other liquid 3/11/2003 FS SPAARBEKK T 3825261 F GW SAMPLING 3/03 TAPWATER Other liquid 3/11/2003 FS TAPWATER T 3825261 F GW SAMPLING 3/03 W02-A Groundwater 3/11/2003 FS MW-W02-A T 3825261 F GW SAMPLING 3/03 WASTE TREATMENT 80 Other liquid 3/11/2003 FS WASTE TREATMENT 80 T 3825261 F GW SAMPLING 3/03 WASTE TREATMENT 82 Other liquid 3/11/2003 FS WASTE TREATMENT 82 T 3825261 F GW SAMPLING 6/03 MF11 Groundwater 6/25/2003 FS MF11 T 3825261 F C8 results Envista 111104.xls Page-l REVIEW METHODNO PREPMTHD 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None 01M-008-046 None PREPREP NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS DRY 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 LAB NUMB L34289-17 L34289-23 L34289-15 L34289-16 L34289-20 L34289-2 L34289-22 L34289-6 L34289-3 L34289-4 L34289-5 L34289-11 L34289-7 L34289-24 L34289-1 L34289-9 L34289-19 L34289-18 L34289-10 L34289-13 L34289-14 L34289-21 L34289-12 L34289-8 L34802-1 DOR RESULT 6100 34900 158000 7430000 131000 354000 50200 71300 1530000 2890000 9180 7910 15000 139 762 5500 3990 16100 14400 439 73.6 14700 4850000 3890000 29500 UNIT NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L MDL PQL 500 5000 1000 500000 10000 50000 5000 5000 500000 500000 500 1000 1000 50 50 500 500 1000 1000 50 50 1000 500000 500000 5000 DUPNO 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 C8 results Envista 111104.xls

AR226-2770 FOR DD POUT USE ONLY Haskell E* I. du Font de NeB-ure and Co,, Inc. laboratory for Toxicology and Industrial Elkton Road, P. 0.

FOR DU PONT USE ONLY AR226-2790 Approximate Lethal Concentration by Inhalation (ALC) of Ammonium Perfluorononanoate (C-9) Haskell Laboratory Report No. 293-85 Haskell E.

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AR226-2982 t$ art Rabbits &"ball tabot trial I4sdiains al Haskell Laboratory 4,801V# 14 . 20-93 DU Poet trio 2$ -!

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AR226-3094 TRADE SECRET FINAL REPORT Study Title H-23005: IN VITRO MAMMALIAN CELL GENE MUTATION TEST WITH AN INDEPENDENT REPEAT ASSAY LABORATORY PROJECT ID: HLO-1998-01211 AUTHORS: Richard H.C.