3M MEDICAL DEPARTMENT CORPORATE TOXICOLOGY ARUrO/50 To: Andrew Seacat 220-2E-02 cc: John Butenhoff 220-2E-02 From: MarvCase 220-2E-02 Subject: Pathology Review Date: 22 July 1999 On 19 July 1999 during my visit at Covance, Madison, I did a slide review of selected tissue sections on the PFOS six-month monkey toxicity study (Study 6329-223).

MULTI-CITY STUDY FIELD REPORT FOR CLEVELAND TENNESSEE AND DECATUR ALABAMA - BATTELLE DUXBURY ACTIVITIES for Project Number N 100672-01 submitted to July 9,1999 Prepared by Scott C.

BACK TO MAIN Summary of Nave Rat/Rat Chow/Fish Meal Study Analyses Conducted by the 3M Environmental Lab (prepared 03/01/01) Nave Rats (Taken from summary report issued in 1998.)

ARZ%-ortH TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) 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.

C O RN IN G Hazleton MUTAGENICITY TEST ON ; IN AN /A VIVO MOUSE MICRONUCLEUS ASSAY FINAL REPORT AUTHOR Hemalatha Murli, Ph.D.

AfW-ossH ACUTE TOXICITY TO AQUATIC INVERTEBRATES (E.G.

HAZLETON WISCONSIN O s T O F F I C E BOX 754$ ADlSON.

m i-w 5j PROTOCOL DETERMINATION OF THE WATER SOLUBILITY OF PFOS BY THE SHAKE FLASK METHOD OECD Guideline for the Testing of Chemicals, 105 Water Solubility 3M Lab Request No.

A R 2 2 -0 ia -)3 ' ACUTE TO XICITY TO AQUATIC INVERTEBRATES (E.G..DAPHNIA) TEST SUBSTANCE___________________________________________ __ Identity: Perfluorooctanesulfonate, Lithium salt; may also be referred to as PFOS Li salt, FC-94, or FC-94-X. (1-Octanesulfonic acid, CAS # 29457-72-5) Rem arks: The test sample is a mixture of the test substance in water (approximately 24.5% test substance and 75.5% water).

BACK TO MAIN DIETARY ACUTE NORTHERN BOBWHITE STUDY REVISED Tissue analysis is now included.

ARnc-om 1 08/13/99 T-6316.15; ST-30 N-EtFOSE Bile 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Protocol for Study No.

AR. - 0 7 & f 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-203CF-X or FC-203CF. (1-Octanesulfonic acid) (CAS # 2795-39-3).

y ]-& & & & _ 0 7 % t MICROBIOS MICROTOX TOXICITY TEST TEST SUBSTANCE___________________________________________ _ Identity: Mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CF-X or FC-203CF. (1-Octanesulfonic acid) (CAS # 2795-39-3).

AR226-2430 INTEROFFIE MEMORANDUM Date: From; Dept; Tel No: 22-Jul-1993 07:59am DANIEL A WEBER WEBERDA POLYMER PRODUCTS 8-863-4415 TO: WALTER M.

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