.

2ca%l o=s| E E| g3 8= go &| 3 > al 78 a @ & 5 = 8g 2.

AR226-2094 Test Results Sample Date Range Concentration Range AcHon Level Industrial 1/1/90 100% Sample Ot Sample Duration type Employee Name BTO; 08 IfiC: 701 TEFION FINE POWDER DRYER-EAST SIDEtfa: 1BO 8747 405 A 12(31/90 Pers Chemical 0.8/FC-143 BTO: 08 LOC; 702 TEFLON PINE POWDER DRYER CONTROL ROOM (ALSO SEE TTF081 1QSQ 294 3S6 A &a/FC-143 2/1460 320 2/14SO 3Z3 418 A 374 A C-WO-143 C-8/FC-143 3/1200 369 360 A C-e/FC-143 7/11/90 509 480 A CWC-143 BTO; 03 LOC: 703 TEFUON PIME POWDER PACKOUT ROOM 1/10(90 15515 355 P 7/1WO 611 480 A 8/10CO 638 330 A 09PJ C.WPC.143 &WC-143 &8fl;:C.143 BTO; 08 LOC: 704 TePLON A/8-FIM6 POWDER (>SWBQH HOOD 2/14BO 322 383 A 3/12(90 368 360 A BTO; 08 LOC; 706 TEPLOM DISPERSION PACK OUTAREA OBOOS-O 480 A BTO: 08 LOC: 708 TEFLON FINE POWDER DRYER S3 1/10(90 297 365 A 2/14(50 321 387 A Cfl/FC-143 C-WC-143 C.aPC-143 C-8/FC-143 C-8/F-C-143 BTO; 08 TEPLOM LOC!

AR226-2341 FL^oP^M^S.

AR226-2559 FILE No. 864 08/01 '01 13:01 ir>;DUDUPONTWILD. -8085-2 ' ^(SY * 123 * A 302 774 6474 07/30/01 (WE 2 16:03 0:02/08 N0;962 I.t^lwtf,1 VIW/ N^rt^ UNmro <TAT1(I ENVWROMNMIWNlMirTPARtO.

RECYCLED t.^1 AR226-2624 INS AR226-2624 JULY 2004 PFOA SAMPLING DUPONT CIRCLEVILLE WORKS CIRCLEVILLE, OHIO Date: August 2004 Project No.: 18984003.04005 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 July 2004 PFOA Sampling Introduction On July 8,2004, groundwater was sampled from two recovery wells and three production wells at the DuPont Circleville Plant.

AR226-2670 0 DuPont Legal Andrea V.

Copies to: E.

AR 246 _ 3277 481 R226. 3297 Duron 15308 ~.

AR226-3380 SSS^SSSSWSWS^S^^wwaw'iw.

FC-95/PhotolysisStudy Using SimulatedSunlight.

DraftReport 26-Week Capsule ToxicityStudy with PerfluorooctanSeulfonic Acid PotassiumSalt(PFOS; T-6295) in Cynomolgus Monkeys PREPAMD FOP, 3M COVANCE STUDY NUMBEP6329-223 VOLUME IOfn COVAW'C-E.-"'\ IM DEWSLOPMIWT SEMCU COMPANY Sponsor. 3M St.PauL Minnesota UNAUDrrED DRAFR April12,2000 FINAL REPORT Study Tide: 26-Week CapsuleToxicityStudywithPerfluorooctanSeulfonicAcid PotassiumSalt(PFOS; T-6295) inCynomolgus Monkeys Author.

FC-17-R Submitted to: BIOSEARCH, INC.

REPORT EVALUATION OF THE MUTAGENIC ACTIVITY OF T-5869 IN THE AMES SALMONELLA/MICROSOME TEST (WITH INDEPENDENT REPEAT) NOTOX Project 115965 NOTOX Substance 38196 page 1 of 23 - T-5869 STATEMENT OF GLP COMPLIANCE NOTOX Project 115965 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.

ntpeAnalyticaLlabopatopieIsn,c. 3048ResearchDrive Phone: (814)231-8032 StateCollege,PA 16801 Fax: (814)231-1253 or (814)231-1580 Ana@fi(;Raelport Fluorochemical Characterizationof Surface Water Samples Decatur,Alabama (Wl979) Centre AnalyticalLaboratory Report No. 023-007B Testing Laboratory CentreAnalyticaLlaboratoryI,nc. 3048 Research Drive StateCollege,PA 16801 3M Environmental Laboratory Contact Kent R.