Summary PFOS RabbitTeratology StudyNumbers: 3M T-6295.10,Argus418-012 Compound & Lot: PFOS (Perfluorooctanesulfona-teL)ot 217, 98.4% pure (SMD AnalyticalRequest 53030) AnalyticalDocumentation filedalong with finalreport.Note - same lotas used in two-yearrat PFOS carcinogenicitsytudy(T-6295,Covance 6329-183).

LaboratorRyeportA,nalysiosfFCs inSamplesofChildrenS'esra,May 21,1999 The datasubmitteodn perfluorooctanesulfcoonnattaeinasnalytdiactawhen certaigneneraclonditiohnasvebeenmet.

REPORT EVALUATION OF THE ABILITY OF T-5869 TO INDUCE CHROMOSOME ABERRATIONS IN CULTURED PERIPHERAL HUNAN LYMPHOCYTES (WITH INDEPENDENT REPEAT) NOTOX Project 115943 NOTOX Substance 38196 page 1 of 26 - 9 T-5869 STATEMENT OF GLP COMPLIANCE NOTOX Project 115943 NOTOX B.V., Is-Hertogenbosch, The Netherlands The study described in this report was conducted in compliance with the most recent edition of: The OECD Principles of Good Laboratory Practice which are essentially in conformity with: The United States Food and Drug Administration.

internCaolrrespondence pi cc: James Boyd - Chemolite 116-1 Eileen Pasbender - 116-1 ' F.

TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity:A mixturecontaininpgerfluorooctanesulfonawthei,ch may alsobe referretdoas PFOS, FC-95,or as a component of FC-603EF. (1Octanesulfoniaccid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-787 or FC787X. (1-Octanesulfoniacid)(CAS # 2795-39-3).

Interoffice Ei3rrespandenCE 3cwm~ Subject November 14, 1974 irc: H.

ARRAG - 3291 He AR 226 _ 3294 Dons TRADE SECRET Study Title H-25914: Influence on Growth and Growth Rateofthe Green Alga Selenastrum capricornutum AUTHORS: Robert A.

siotf ARR_ R Ju6 y3 i a7 000410 : ~oD ARRRG - 3442 TEFLONe FINE POWDER/DISPERSION OPERATORS C-8 BLOOD SAMPLE RESULTS | | | i " AY BD C-8 in Blood First Sample Second Sample 26.0 20.0 24.0 25.0 11.0 8.2 9.4 7.9 8.2 6.5 7.0 7.7 6.9 5.9 5.6 4.2 iss rx 4.3 5.6 3.9 3.6 3.6 2.7 3.5 2.1 2.9 2.8 2.8 2.8 2.6 2.4 2.5 1.8 2.5 2.5 2.1 1.6 1.6 1.5 1.5 1.2 13 1.1 (ppm) Change 6.0 +1.0 -2.8 to-L5 -17 +0.7 1.0 ~1.4 0.5 +1.3 ~0.3 ~0.9 ~1.4 -0.1 0.0 0.2 -0.7 0.0 0.5 -0.1 -0.3 -0.2 JWR:1dr/10/19/83 Days Between Samples 363 364 391 364 363 364 337 334 365 401 364 362 363 357 365 391 336 349 288 384 366 362 % Per Year Change -23 + ~24 -16 -21 +10 16 -27 .

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, organization for applied scientific CIVO research TldO-repor; ~- ac~p P o eo . 360 3700 A.: Ze .st Unecntseweg 40 Ze,st .

Taft/ Taft Stettinius & Hollister LLP f 425 Walnut Street, Suite 1800/ Cincinnati, OH 45202-3957 / Tel : 513 .381 .2838 / Fax : 513 .381 .0205 /www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing ROBERT A.