AR226-2112 Sample Date Range Concentration Range Action Level Industrial H ygiene 1/1/84 12/31/84 100% Sample Dt Sample# Duration Type Employee Name BTO: 08 TEFLON LOC: 701 FINE POWDER DRYER-EAST SIDE#2 1/8/84 46247 390 Z 1/13/84 46248 380 Z 3/11/84 46249 360 z 4/10/84 46250 395 z 5/7/84 46251 380 z 6/3/84 46252 380 z 7/2/84 46253 360 z 7/30/04 46254 360 z 8/24/84 46255 330 z 9/23/84 46256 420 z 10/21/84 46257 360 z 12/17/84 46258 370 z Pers Chemical C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 Cone Unit Percent 82 MPB 146429%** 0.19 MPB 339% 0,31 MPB 55.4% OZI MPB 379% 0.47 MPB 839% 0.29 MPB 51.8% 0 .0 3 MPB 5.4% 0.26 MPB 509% QJ53 MPB 94.6% 0.62 MPB 110.7%** 056 MPB 64.3% 0.39 MPB 69.6% BTO: 08 TEFLON LOC : 702 FINE POWDER DRYER CONTROL ROOM (ALSO SEE TTF031 1/23/84 3656$ 345 z C-8/FC-143 1/27/84 36587 420 z C-8/FC-143 2/20/84 36568 360 z C-8/FC-143 3/17/84 36569 360 z C-8/FC-143 6/12/84 36570 385 z C-8/FC-143 7/8/84 36571 340 z C-8/PC-143 8/4/84 36572 420 z C-8/FC-143 10/2/84 36573 360 z ' C-8/FC-143 11/2484 36574 350 z C-8/FC-143 12/23/84 36575 340 z C-8/FC-143 0.62 MPB 0.51 MPB 038 MPB 0.37 MPB 0.S3 MPB 0.15 MPB 0.38 MPB 0.77 MPB 0.26 MPB 0.23 MPB <1 110.7%** 91.1% 679% 66.1% 94.6% 26.8% 67,9% 137.5%** 46.4% 41.1% BTO!

C harles J Zarzecki 02/24/2003 02:43 PM To: Catherine A Barton/AE/DuPont co: Subject: Slid e s Cathie, Here they are.

Katherine E.

TSCA Document Processing Center Attn: Section 8(e)/FYI M2.Z6 - 373V August 10,2006 Page 4 of 10 Attachment 1 July 19, 2006 "Note for settling parties" from the Science Panel (1 page) Note for settling parties We have prepared some outline protocols for several interlinked research components addressing the potential health effects of exposure to C8 around the Washington Works plant.

GRAIN SIZE DISTRIBUTION 100 95 90 85 80 75 70 . 65 60 m>- 55 O' 50 z 45 HI UCLJ 40 35 30 25 20 15 10 5 U S.

P # te 7 I UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 F V Z -O S o l- /3 7/ M arch 20, 2001 FYI-00-00137B a 9 6 - ,0 3 OFFICE OF PREVENTION.

GRAIN SIZE DISTRIBUTION 100 95 90 85 80 75 70 . 65 60 m>- 55 O' 50 z 45 HI UCLJ 40 35 30 25 20 15 10 5 U S.

27,2000 One Generation Reproduction Study of PFOS Mevalonic Add/Cholesterol Challenge and NOEL Investigation in Rats Draft Study Outline fS -2- Study Objectives: This study will serve as a follow-up study to Combined Oral (gavagel Fertility.

Submitted to; rC -tZ -% AR:O-02i?

BACK TO MAIN Biodegradation study Report The Aerobic Biodegradation of W-EtFOSE Alcohol by the Microbial Activity Present in Municipal Wastewater Treatment Sludge Thursday, November 02, 2000 Project Number 3M Project ID: LIMS E00-2252 Pace Contract Analytical Project ID: CA058 Pace Proposal ID: 000511.1 Principal Analytical Investigator Cleston C.

3 FLUOROCHEMICAL SUBMISSIONS JUNE 28, 2001 Click a Blue Item Below to Continue COVER LETTER TO USEPA TOXICOLOGY, EPIDEMIOLOGY & MEDICAL SUVEILLANCE ENVIRONMENTAL - PHYSICAL/CHEMICAL, FATE & EFFECTS AND MONITORING STUDIES BIBLIOGRAPHY OF ADDITIONAL PUBLISHED LITERATURE

BACK TO MAIN SOIL ADSORPTION TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder.

BACK TO MAIN 3M Environmental Laboratory Report No.

, ^ Dsr^ , 9 EHQ- 0 0 -0 0 3 73 y A R D 6-0543 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 February 25, 2000 ocbi 3M Company, Inc.

3M Cenerai Offices , ; 3M Center St.