AR 226-0096 EEF CHRONIC TOXICITY TO EARLY LIFE STAGE OF FISH TESTSUBSTANCE Identity: PFeCr-f9l5u.oro(o1c-tOacnteasnuelsiuolnfaotnei;cmaaciyd,al1s,o1,b2e,2r.e3f,e3r,r4e,d4.t5o,5a,s6,P6,F7O.7S.8o.r8.8heptadecafluoro-, potassium salt, CAS# 2795-35-3) Remarks field: taken from 3M lot nuTmhbeerte2s1t7.subSsatmapnlcee is a white powder. was stored under Sample ambient was conditions prior HMR, "F-NMR atondtesetlinegm.enPtuarlitayndaeltyesremsitneecdhntioqubees.90.49% by LC/MS, 'H- METHOD TMyeptheo:d:FlOowE-CthDro2u1g0h, OPPTS chronic 850.1400 GLP: Yes SYpeeacriecso:mpPlietmeedp:halSetsudpyrcoommepllaested 1999.

-- - i | | | | | - - AR2IE- 0106 EFE-I3 TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) EST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,56,6,7,7,8,8,8- heptadecafiuoro-, potassium salt, CAS # 2795-39-3) Remarks field: "The test substance is a white powder (3M Lot 583) of uncharacterized purity.

EE ACUTE TOXICITY TO FISH ARLE 0 1] TEST SUBSTANCE.

Sxpertzent Hous contuctad aes sates contustats F---- prea shin Susisasion Seve IN tn Albino subnets esnasserse fsraetdheorloRgynaintvTiooexgtcsntodny auty 12, 1988 to avty 20, Tome 1s hrdeac, ory sechntctan S aiidy Oc.

SOIL ADSORPTION TEST SUBSTANCE Identity: NN--eEtthyFlOpSeErfAllucoorhooolctoarneFMs-u3lf4o2n2a.mi(d1oe-tOhcatnaonle;sumlafoynaalmsiodeb,eNr-eeftehryrle-d to as 1.1,222,3,3.4.4,5,5,6,6,7.7,8,8 8-heptadecafluoro-N-(2-hydroxyethyl)-, CAS #1691-99-2) Remarks: Material is an off-white, waxy solid of uncharacterized purity.

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opaoz size BossLOS Tsk CINCINNATI @oor/019 -19f TAFT, STETTINIUS & HOLLISTER wormemaronen LLP AR 226 1098 425 WALNUT STREET romanFREgeTonros CINGINNAT, OHIO 462023957 ERE os cEomRmangreen Ei coma WATE, wonstonon FREE, wk sa49H q .

Lo. 3 Spreeceialty Materials Si2tMP CmomeNorNa S11l0 AR226_ 1100 Glyfrp uuyly 161.6, 2002 F1z- 0702. 01372 0 '% BrgB y,eAeIi:c 55 3M DOfofciucmeoefnPtoClolnuttrioolnOPfrfeivceent(iDoCnOa)nd Toxics (OPPT) VIA FEDERAL EXPRESS EUPSAEnEvaistr,onRmoeontmal64P2r8otection Agency | Tr b 1201 Constitution Avenue, NW | IH i Washington, D.C. 20460 FI YI-0hil 8-001378 I Attention: Docket No.

AR &86- 1351 Page 1 EpidFemIiNoAloLgyR,E2P2O0-R3TW-05 Medical Department 3M Company St.

PECs and PIC I ; SeotchGand ARAR6.- ISOC p bt4 7 3 \ 44 COTCHGAR Toxic to animals & people.

Final Report July 2003 AR226-1521 STUDY OF THE ATMOSPHERIC FATE OF FLUORINATED ALCOHOLS RECEIVED OPPT NCIC 03 SEP 30 PM 13:30 CNRS-LCSR Contract with RAND Corp. for the Telomer Research Program Study of the atmospheric fate of fluorinated alcohols FOREWORD This work has been carried out by Georges LE BRAS (principal investigator, CNRSLCSR), Valrie BOSSOUTROT (Post-doc, CNRS-LCSR) and Isabelle MAGNERON (Post-doc, CNRS-LCSR).

70 PP AR226-1534 DUPONT TELOMER MANUFACTURING SITES: ENVIRONMENTAL ASSESSMENT OF PFOA LEVELS IN AIR AND WATER RECEIVED OPPT NCIC 2003 OCT-15 AM 8:10 Date: September 2003 Project No.: 508501 18983843.00003 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels In Air and Water Table of Contents TABLE OF CONTENTS Executive Summary ....................................................................................................... iv 1.0 Introduction............................................................................................................ 1 1.1 Chambers Works ........................................................................................... 1 1.2 Washington Works ........................................................................................ 2 2.0 Data Analysis and Analytical Reporting ................................................................. 3 3.0 Air Dispersion Modeling........................................................................................ 4 3.1 Chambers Works - ISC3 Modeling Methodology and Results ....................... 4 3.1.1 Emission Source Information............................................................ 4 3.1.2 Modeling Methodology .................................................................... 4 3.1.3 Modeling Results.............................................................................. 4 3.2 Washington Works - Screen3 Modeling Methodology and Results................ 6 3.2.1 Data and Modeling Procedures ......................................................... 6 3.2.2 Modeling Results.............................................................................. 8 4.0 Chambers Works Groundwater Sampling............................................................... 9 4.1 Background ................................................................................................... 9 4.2 Regional Geology.......................................................................................... 9 4.3 Site Geology.................................................................................................. 9 4.4 Site Hydrogeology....................................................................................... 10 4.5 Sample Location Selection........................................................................... 11 4.6 Sampling Activities and Results................................................................... 11 4.7 Summary of Results..................................................................................... 12 5.0 Chambers Works Surface Water Sampling ........................................................... 14 5.1 Site Effluent Sample Results........................................................................ 14 5.2 Chambers Works and Upstream Surface Water Intake Results..................... 14 5.3 Delaware River Surface Water Sampling ..................................................... 15 5.3.1 Delaware River - Discussion of Results.......................................... 16 5.4 Salem Canal................................................................................................. 17 5.5 Summary of Results..................................................................................... 17 6.0 Conclusions.......................................................................................................... 18 7.0 References............................................................................................................ 19 EnvironmentalAssessment.doc Oct. 1, 03 i Wilmington, DE DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels In Air and Water Table of Contents Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 TABLES CATT Established Screening Levels ...................................................... vi Summary of Air Dispersion Modeling Results ....................................... vi Summary of Groundwater Sampling Results-Chambers Works ............. vi Summary of Surface Water Sampling Results-Chambers Works ........... vi Chambers Works Stack Parameters and Emission Rates.......................... 5 Chambers Works Building Heights ......................................................... 5 Chambers Works Site Air Dispersion Modeling Results.......................... 6 Chambers Works Telomers Operations Air Dispersion Modeling Results6 Washington Works GEP Stack Heights................................................... 7 Chambers Work Groundwater Analytical Results ................................. 12 Chambers Works Outfall DSN001 Results............................................ 14 Chambers Works Surface Water Intake Results .................................... 15 Chambers Works Delaware River Sampling, June 9, 2003........................ ..................................................................................

: AR226- 0509 ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: P26e,rfolruoFrXo-o1c0t0a1no.ic(Oaccitda;nomiacyacailds,o pbeentraedfeecrarfeldutooroa-s, PCFAOSA,# F3C35-67-1) Remarks: The 3M production lot number was not noted.

AR 26-0537 TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) TT ESTE SUBSs TANCT E Sue0s 0y 00 ANCE Identity: Perfluorooctylsulfonate, didecyldimethylammonium salt; may also be referred to as Fluoroalkyl ammonium derivative.

PCoAsSsNuummePreat7uosrss3o0c3anesutos AR 226-0560 abort RSuMsEsndNouFrmmeeerenLatALNaTCosooonnosg --- ANALYTICAL LABORATORY REPORT oNTHE Determination of the Presence andConcentration of Potassium Perfluorooctanesulfonate (CAS Number: 2759-39-3) in the Serum and Liver of Sprague-Dawley Rats Exposed to PFOS via Gavage Laboratory Report No.