EPL EXPERIM ENTA L PA THO LO G Y LA BO RATOR IES, INC.

Katherine E.

AR226-1838 DuPont/3M Meeting with EPA August 25,2004 1:00 P M -4:00 PM Agenda Background/Obj ectives Received OPPT NCIC 2004 SEP-3 Data Review Linear/Branched Study Worker Exposure Data Biology Review P air Forward v \ < e S i y ^Jc^L 5 H *- 'D .J '^ - V % r / o V !

TestResults AR226-2130 nie;///C|/WINDOWS/TEMP/PolymersC...2-2-8) thiu 8-24-01 121 pages.htm TestResults sample Data Range Concentration Range Action Level Industrial Hygiene 2/2/81 100% 8/24/01 Sample Dt Sample# Duration Type Employee Name Pers BTO: 18 TEFLON COPOLYMERS LOC : 001 FEP OVENSNORTH SIDE 1/4/83 39510 424 2 2/7/83 39511 415 2 ' 2/15/83 39512 458 Z 2/28/83 39513 424 z 3/21/83 39514 446 z 5/2/83 39515 428 z 6/28/83 39516 457 z 7/11/83 39517 452 z 8/2/83 39518 445 z 8/15/83 39519 510 z 8/29/83 39520 460 z 9/20/83 39521 469 z 10/7/83 39522 453' z 10/24/B3 39523 460 z 11/7/83 39524 451 z Chemical Cone u n it Percent C-8/FC-143 <0.03 MPB 5.4% C*8/FC-143 <0.03 MPB 5.4% C-8/FC-143 0.05 MPB 8.9% C-8/FC-143 0.16 MPB 28.6% C-8/FC-143 0.03 MPB 5.4% C-8/FC-143 0.07 MPB 12.5% C-8/FC-143 0.5 MPB 89.3% C-B/FC-143 0.09 MPB 16.1% C-8/FC-143 <0.03 MPB 5.4% C-8/FC443 0.08 MPB 14.3% C-8/FC-143 0.07 MPB 12.5% C-8/FC-143 C-8/FC-143 C-8/FC-143 0.05 MPB 0.06 MPB 0.06 MPB 8.9% 10.7% 10.7% C-8/FC-143 0.06 MPB 10.7% 1 o f 233 8'28/2001 5:0 EID129060 AJP006693 TestResults 11/7/83 39525 11/21/83 39526 12/5/83 39527 12/27/83 39528 1/31/04 39529 3/6/84 39530 3/6/84 39531 5/7/84 39532 6/19/84 39533 8/15/84 39534 10/19/84 39535 12/12/84 39536 2/11/85 39537 2/11/85 39538 3/19/85 39539 4/11/85 39540 451 Z 453 z 462 z 463 z 462 z 412 z 412 z 455 z 462 z 486 z 467 z 468 z 485 z 330 z 470 z 452 z Tuesday, August 28,2001 3:26:20 PM file:///C|/WTNDOWS/TEMP/Polymers C...2-2-81 ta u 8-24-01 121 pages.htm C -8/FC -143 0.06 MPB 10.7% C -8/FC -143 0.03 MPB 5.4% C -8/FC -143 0.04 MPB 7.1% C -8/FC -143 0.05 MPB 8.9% C -8/FC -143 0.08 MPB 14.3% C -8/FC -143 0.03 MPB 5.4% C -8/FC -143 0.03 M PB 5.4% C -8/FC -143 0.1 MPB 17.9% C -8/FC -143 0.23 MPB 41.1% C -8/FC -143 <0.03 MPB 5.4% C -8/FC -143 0.04 MPB 7.1% C -8/FC -143 0.08 MPB 14.3% - C -8/FC -143 0.11 MPB 19.6% - C -8/FC -143 0.3 MPB 53.8% C -8/FC -143 0.09 MPB 16.1% C -8/FC -143 0.15 MPB 26.8% Page 1 of 119 AJP006694 \ 2 o f233 Sample Dt Sample # Duration Type Employee Name Pers Chemical Conc Unit Percent 8/28/2001 5:05 EXD129061 1'estResults filc'.

AR226-2508 W ASHING TO N W O RKS - PER M IT W V 0001279 O CTOBER AND NOVEM BER 2001 FC -143 RESULTS (Letter, R .

Katherine E.

3M General Offices June 6, 2005 3M Center Si.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244436 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 03/06/2006 Signature Name: Richard C.

30 June 2003 To: Mary F.

3M GLP10-01-02; Interim Report 06 Analysis of PFBS, PFHS, and PFOS In Water Samples from Decatur, AL June/July 2010 GLP10-01-02: Interim Report 06 - Analysis o f PFBS.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 249892 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur Attention: Jai Kesari Date: 01/03/2007 Signature Name: Richard C.

AR226-1030A024 BACK TO MAIN Im p in g er Studies o f V o la tility o f FC -95 and FC -143 Intoduction and Purpose: Thermospray mass spectrometry was used to quantitate a number of samples for FC-143 and FC-95.

BACK TO MAIN Study Title Soil Adsorption/Desorption Study of Potassium Perfluorooctanesulfonate (PFOS) Data Requirement Based on OECD 106 Author Mark E.

m -OSTOO - /3 7/f Attachments to Letter to C.

3M General Offices 3M Center St.