; Paria si THO YEAR ORAL (DIET) TOXICITY / CARCINOGENICITY STUDY OF FLUOROCHEMICAL FC-143 IN RATS (RIKER Experiment No. 0281CRO012) VoLuwe 2 oF 4 ConpucteD DURING AeriL, 1981 - Mav, 1983 RIKER LABORATORIES, Inc. / 3M ConpANY ST.

Internal Correspondence cc: EJaimleesenBoFyadsbe-ndCehremo-li1t1e6-1116-1 F.

A R126-0507 ACUTE TOXICITY TO AQUATIC INVERTABRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC- 116, FC-126, FC-169, or FC-143.

BACK TO MAIN WATER SOLUBILITY TEST SUBSTANCE Identity: Decafluoro(pentafluoroethyl)cyclohexanesulfonate, DEA salt; may be referred to as CS-2070.

AR226-2460 Roger J Zipfel 06/04/99 06:00 PM To: cc: Subject: Katsunosuke Kitaaawa/PO/DuPont@DuPont Re: C-8 In ground water ^ Kitagawa-san, we have ground water levels as high as 1500 ppb in some places.

FOR DU PONT USE ONLY AR226-2909 W.

oral Toratology Study of T-314ICoC in Rabbits RECE!

ACUTE TOXICITY TO AQUATIC INVERTEBRATES TEST SUBSTANCE (DAPHNIA MAGNA) Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredto as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfoniaccid)(CAS # 2795-39-3).

MICROBICS MICROTOXS TOXICITY TEST TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component ofFC-206CE. (1Octanesulfoniaccid)(CAS # 2795-39-3).

- A T-2253 "AL ORIGINAL ARG -- 0965 w*ihUKEH, - 0800 - 37> anaAabtTseiorerspAutedimoDniinsiatnsdrtirBbaiutotitioronannosfafnoKdr-mEEtalhtiyimloinnFaOotfSiEoN-n-IEAotCfhCyialncbFOoeSneE-d14 Sanaary 19, 1983 gel 0 uo lh Conducted Att During: Conducted By: R3ikeCrentLearboratories, Inc.

April 2. 1'J")% Larryand JcffFor titcalt3CIICgdf2plISand tables.I did thefollowing: useddatafrom 1981 on (beforethatthecountsperyearwere low) fortheemployees in 1997.lookedback to 1981 forallpastfluonnemeasurements twisedthenwnber of fluorinenumaimments peremployee selectedgroupsbased an ountbcrof meLramenTs: 6+.7+,3+. 9+,and 1(>+ createdone chartand one tableforeach group The n- valueon thechatu isthemaximum number of uxfividualsselectedforthegroup.

Acute oral Toxicity Screen with T-3066CoC in Albino Rats 01981 Experiw.nt No.: Conducted At: Dates Conducted: Conducted By: 0981AR0146 Safety Evaluation Laboratory R:Lker Laboratories, Inc.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:Perfluorooctanoiaccid,ammonium salt;may alsobe referredto as PFOA ammonium saltA,mmonium perfluorooctanoateF,C116, FC-126, FC-169, or FC-143.

ST internal Comespondence +7AR226-048H eakts Eval.

AR Q26 - 0911 TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity: ArefmeirxrteudretocaonstPaiFnOiSng,pFeCr-f9lu5o,roorocatsanaescuolmfopnoanteen,twhoifcFhX-m3a1y03a.lso(1b-e Octanesulfonic acid) (CAS # 2795-39-3).