AR226-2377 X-** RC*. t-73 CC: R .

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AR226-2700 AR226-2700 TORONTO WORKSHOP MATERIALS Septem ber 13-14,2004 ) A n (E-Tate (Perspective John Gannon DuPont Central Research & Development, Wilmington, DE M B fe I | The miracles o f scien ce] 1 isiderations for Thou What is the Source of PFCA's in the Environment?

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AR226-2821 1 Copies co: E I* du Pont de Nemours and Company Haskell Laboratory lor Toxicology and Industrial Medicine TEN-DOSE SUBACUTE ORAL TEST (RATS) Procedure : The test material (H-3824) was administered dally by stomach tube to each of six young adult ChR-CD male rats, five times a week for two weeks.

AR226-3008 Studv Sonsor: Ifi.qi ip Date: Document Reference No.: ELF ATOCHEM 9-Jan-95 95/SAE6/0304/HT . -------------------- .

3-267 443 M 2 & - }A G !

TRADE SECRET Study Title A flcL & - $ 3 & DuPont-13202 T e st G u id e l in e s : OECD Guideline 111 A u th o r : Bogdan Szostek, Ph.D.

AR226-3336 DuPont Fluoroproducts Washington Works Melts Technology Report Contribution Name: Stephen R.

'3/ Qb J f-y*oc-3l5~ Garfield water Department Client Sample ID: Gli B U M D C D PARX PUKP STATION HPLC Lot-Sample fi... ; D8C060309-001 Work Order f . : KH51C1AA Date Sampled__ : 03/05/08 09:00 Date Received..: 03/06/08 Prep Date..... : 03/10/08 Analysis Date..: 03/12/08 Prep Batch ff___: 8070135 Analysis Time..: 22:21 Dilution Pactor: 1 Method DEN -LC-0012 Matrix PARAMETER PROS PFOA RESULT 0 .0 2 1 0.038 REPORTING LIMIT UNITS 0.010 ug/L 0.015 ug/L SURROGATE 13C4 PFOA 13C4 PFOS PERCENT RECOVERY 67 41 * RECOVERY LIMITS (50 - 200) (50 - 200) BOIB(S): ________________ * Sum m it recovery ti outtide rated conirot lmiti

IRC Summary Analyte Peak Name PFBA2 PFPeA2 PFBS2 PFHxA 2 PFHpA2 PFHxS2 S_13C-PFBA S_13C-PFHxA p. 1 Created with Analyst Reporter Printed: 15/02/2010 2:34:00 PM cv- RT (Exp RT) 1.26 (1.27) 3.59(3.60) 4.23 (4.26) 0.00(5.31) 6.23 (6.22) 6.31 (6.32) 1.26 (1.26) 5.30(5.30) Area 93304 41237 5630 0 137320 18961 4107400 5157600 Modified?

CHAIN OF CUSTODY / ANALYSIS REQUEST FORM Tuscaloosa Testing Laboratory PAGE 1 o f j g T: 256-353-2910 PROJECT INFORMATION Client: Weston Solutions, Inc. 1400 Weston Way, Bldg. 5-2 West Chester, PA 19380 T: 610-701-3761 F: 610-701-7401 Project Manager: Jai Kesari emcail: j.kesari@westonsolutions.com Project Name: Reference No: Decatur, AL FSIA GP Investigation 02181-129-081-0001 1 ANALYSES REQUESTED Sampler: T.

AkaG- M i l l Centre Analytical Laboratories.

3 GLP10-01-02 Interim Report 12: Analysis for PFOS, PFHS and PFBS in Decatur, AL Off-Site Soils Collected September/October 2010 Study Title 3M Environmental Laboratory Analytical Protocol GLP-10-01-02: Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 Principle Analytical Investigator Cleston C.

BACK TO MAIN 3M Environmental Laboratory Biodegradation Studies Executive Summary of Biodegradation Studies 3M has completed a series of studies of the biodegradability of various fluorochemical materials based on EPA Guidelines OPPTS 835.3200, OPPTS 835.3210 and/or OPPTS 835.5045.