H-24516: Subchromc I'oxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations AR226-3201 DuPont-5368 TRADE SECRET Study Title H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations Volume 5 o f 5 Laboratory Project ID: DuPont-5386 Test Guidelines: U.S.

07A f L Z Z G - S/ TOXICITY 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-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

FLUOROCARBONS AND HUMAN HEALTH: STUDIES IN AN OCCUPATIO NAL C O HO RT A TH ESIS SUBM ITTED TO TH E FACULTY O F TH E GRADUATE SCHOOL O F TH E UN IVER SITY O F M INNESOTA BY FRANK DAVIS GILLILAND IN PARTIAL FULFILLMENT O F TH E REQUIREM ENTS FOR THE DEGREE OF DO CTOR O F PHILOSOPHY/ENVIRO NM ENTAL HEALTH OCTOBER, 1992 3M MN03112178 ACKNOW LEDG EM ENTS I am indebted to Dr.

FFIINNAALL RREEPPOORRTT PROTOCOL 418.011 PROTOCOL 418-011 ORAL ORAL (GAVAGE) (GAVAGE) DDEEVVEELLOOPPMMEEINNNTTRAAALLTTTSOOXXIICCIITTYY STUDY STUDY OOFF NN--EEtIFFOOSSEE IN RATS \ SSPPOONNSSOORR''SS SSTTUUDDYY NNUUMMBBEERR:: TT--66331166..77 FINAL REPORT DATE: 17 DECEMBER 1998 FINAL REPORT DATE: 17 DECEMBER 1998 22778888..00000011 1100117711118811 Exhibit 2788 rostivrtieiorl RN 3MA10083119 PPRROOTTOOCCOOLL 441188--001111 prot OORRAALL ((GGAAVVAAGGEE)) DDEEVVEELLOOPPMMEENNTTAALL TTOOXXIICCIITTYY SSTTUUDDYY OOFF NN--EEttFFOOSSEE IN RATS `SSPPOONNSSOORR''SS SSTTUUDDYY NNUUMMBBEERR:: TT--66331166..77 T TABLA EOOFB F CCOONL NTTEENE NTTS SSUUBBJJEECCTT | SUMMARY AND CONCLUSION I.

Perfluorooctane Sulfonate: Current Summary of Human Sera, Health and Toxicology Data 3M January 21,1999 000014: US00001667 January 21, 1999 TABLE OF CONTENTS EXECUTIVE SUMMARY...................................................................................................................................3 I.

PRIZE 20% 7 CHRONIC TOXICITY TO FRESHWATER INVERTABRATES (Daphnia magna) TESTSUBSTANCE Identity: Perfluorooctanesulfonate; FC-95. (1-Octanesulfonic may acid, a1l,s1o,2b,e2.r3e,f3e,r4r,e4d,5t,o5,a6s.6P,7F.O7,S8.o8r.8- heptadecafluoro-, potassium salt, CAS# 2795-38-3) 3ReMmlaort knsu:mbTehre21l7e.st sSuabmsptlaencweaiss astwohrietdeupnodwedrera.mbiSeanmtpcloendwiatsiontsakperniofrrtoom etelsetmienng.taPluraintayldyesteesrmteicnhendiqtuoesb.e 90.49% by LC/MS, 'H-HMR, '*F-NMR and METHOD Method: 1193-87 OPPTS 850.1300, OECD Guideline 211, and ASTM Standard E Type: Semi-Static Life-Cycle Toxicity GLP: Yes YSpeeacriceosm:pDlaepthendi:aSmtaugdynacompleted 1999.

, 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Protocol for Study No.

CORNINGHazleton MUTAGENICITY TEST ON o T6292 ; IN AN IN VIVO MOUSE MICRONUCLEUS ASSAY EINALREPORT AUTHOR Hemalatha Murli, Ph.D.

AR 226 _0821 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) IESTSUBSTANCE ~~~ 00000 Identity: A mixture containing perfluorooctanesulfonate; may also be referred to as PFOS, FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

AR 226 _ 0292 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, which may also be . referred to as PFOS, FC-95, or as a component of FC-3017. (1Octanesulfonic acid) (CAS # 2795-39-3).

Resume prof. dr. ir.

AR226-3039 Study Title Approximate Lethal Dose (ALD) of H-21460 in Rats Laboratory Project ID HaskeH Laboratory Report No. 176-96 Author Tracy A.

AR226-3186 TRADE SECRET Study Title H-24616: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations Volume 3 of 5 Laboratory Project ID: DuPont-4739 DuPont-4739 TEST GUIDELINES: U.S.

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BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95 or as a component of FC-201 AF. (1Octanesulfonicacid)(CAS # 2795-39-3).