To: From: Subject: Date: Study Files of Riker Experiments Nos. 0680TR0008 0066880077R800002100 00668811778R00101905 Li G.

ARRRG - O04 ACUTE TOXICITY TO FISH (RAINBOW TROUT) TEST SUBSTANCE Identity: ArefmeirxrteudretocaonstPaiFnOiSng, pFeCr-f8l5u,oroorocatsanaescuolmfponoanteen,twhoficFhC-m3a0y52a.ls(o1b-e Octanesulfonic acid) (CAS # 2795-39-3).

BACK TO MAIN Executive Summary of Hydrolysis Studies 3M has completed a series of studies of the hydrolytic reactions of various fluorochemicals.

Wildlife International, Ltd. "1- Project Number 454A-105 PFOS: A 96-HOUR STATIC ACUTE TOXICITY TEST WITH THE FRESHWATER MUSSEL (Umo complamatus) ADDENDUM WILDLIFE INTERNATIONAL, LTD.

_--_--m--m .E n B RESEARCH Pen, gLeenn Ar2z26-194 9 APPT Cie 05APR25 AMI: [1 F< V4 3M Company Analysisof PFOA and PFOS In Water Samples from HastingsMunicipality : [E05-0186 Exygen Report No.

AR226-2228 EID295000 Emission Information 1823A 815D 8150 1353A Pre-Existing 614A 614A 781 1953 2365A Semiworks Application Semi-works Application Semiworks Application Semiworks Application 'This is the declared polential-to-emit for this emission point.

AR226-2250 Watershed Paniculate Phase Total Wet Dry Deposition Deposition Deposition (a/vr) (g/yr) (a/yr) Vapor Phase Wet Deposition (fl/yl Total (a/yr) Total (Ib/yr) Little Hocking 19449 12483 6966 1642 21091 46.5 Lake Washington 2686 803 1883 364 3050 6.7 Ohio River 103942 70335 33547 11612 115554 254.7

vim AR226-2370 Example calculation of chemical toadfngand groundwater response.

AR226-2438 CH-3134 WV. 7<92 [zjs - n;(-j- x ^^ ^ ^ REOUesT60BY 0 CHEMIST -1--------------""" .... ^,..

AR226-2458 t > i FT"-^ r'" i j Stephen Opp 05/17/99 01-.40 PM To: cc: Subject: Roger J 2ipfel/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont Andrew S Hartten/AE/DuPont@DuPont Washington Works Groundwater Results Summary Tables Roger and Bob; Attached you will find a spreadsheet that summarizes the 2 groundwater sampling events at Washington Works.

AR226-2506 ASH010154 ASH010155

AR226-2564 Andrew S'Rartlen "" ' ' '"11/6T/20dl'03':59PM'i To: cc: Subject: wen(worth.wlllfam@epamail.epa.gov Update on Things Bill, A couple of things I wanted to update you on.

AR226-2818 The Embryo-Fetal Toxicity and Teratogenic Potential of Ammonium Perfluorooctanoate (APFO) in the Rat (Work Done for Hire) Robert E.

AR226-2906 _______hag sdsJRistaggii orally so youag adolc Ie raca at repa?

AR226-2919 FOR DU FONT USE ONLY Copies to: Haskell E.