BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE April 2004 Click on Study Title to View Report April 16, 2004 Butenhoff, J.L., et al., "Characterization of Risk for General Population Exposure to Perfluorooctanoate," Regulatory Toxicology and Pharmacology 39 (2004) 363-380, April 16, 2004

BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE ATTACHMENT TO LETTER OF 1/18/05 Click on Study Title to View Report Multiple Chemicals Page: 1 1.

At*S-/ff Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Mallard Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoropotassium salt, CAS# 2795-39-3 Test Remarks: The test substance is a white powder (3M Lot #217).

Toxicological Summary PFOS Dietary Acute Northern Bobwhite Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS# 2795-39-3 Remarks: The test substance is a white powder (3M lot #217).

A m & -1105 Sponsor: 3M St.

AR226-2006 INTEROFFICE MEMORANDUM Date: From; Dept; Tel No; 14-Mar-1383 10:34om William A.

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AR226-2270 GIST MEETING M arch 5,2002 Dave Watkins, chairperson, called the meeting to order at 9:15 am on March 5,2002.

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AR226-2558 Andrew S Hartten 05/31/2001 03:29 PM To: wentworth.william@ epamall.epa.gov cc: Robert L Ritchey/CL/DuPont@ DuPont, Isidores J Zanikos/AE/DuPont@DuPont, Andrea V Malinowski/AE/DuPont@DuPont, Alison A Crane/AE/DuPont@DuPont Subject: Information on W ashington W orks Facility B ill, The following provides answers to your questions in the May 23 memo you sent me, which Is attached.

Date: January 9, 2006 AR SS.G - 36 70 Final Report Epidemiology, 220-6W-08 Medical Department 3M Company St.

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