26 November 2004 AR226-1889 To: Mary F.

3M Specialty Materials 3M Center St.

AXYS METHOD MLA-031 Rev 01 pfos_s i_D2 Forni 1AI2 PERFLUORINATED SURFACTANT ANALYSIS REPORT CLIENT 1D: Sample Collection: 24-Nov-2004 14:30 Lab Name: AXYS ANALYTICAL SERVICES Project Name: NIA Contract No.: 4191 Lab Sample ID: L7415-1 Matrix: SOLID Sample Size: 17.0 g (dry) Sample Receipt Date: 25-NOV-2004 Initial Calibration Date: 17-Jan-20Q5 Extraction Date: 14-Jan-2005 instrument ID: LC-MS/MS Analyele Date: 17-Jan-2005 Time: 19:37:42 LC Column ID: Discovery C16 Extract Volume (mL): 2 Sample Datafile: PFS5G 004S29 Injection Volume (pL): 15.0 Blank Data Filename: PFS5G_004S19 Dilution Factor: N/A Cal.

AR226-1973 *. 1 - 1 T REV.1- CSUtUSKESBO Z E .

AR226-2004 W* *1 * February 8, 1988 /ZJ fO!

AR226-2216 Chris E Shoop 11/19/2001 03:08 P M _________ _______ _ To: Ralph M Aten/AE/DuPont@DuPont cc: Debbie J Mulrooney/AE/DuPont@DuPont Su bject Particulate / C -8 Em issions from Semiworks Ralph, In about August of this year 1used information from the semiworks air permit application that you were preparing to provide data to the state on total C-8 emissions for the site.

AR226-2325 ^ John W M ilro yJII 04/03/2003 05:41 PM To: co: Subject: Catherine A Barton/AE/DuPont@ DuPont Stephen R Hastings/DDE/DuPont@ DuPont, Ann K Masse/HO/DuPont@ DuPont, Charles J Zarzecki/AE/DuPont@ DuPont Re: Data fo r a ir dispersion modeling D This is the data for DuPont Dow, building 1163, C 8 release to the am osphere.

AR226-2808 DuPont-11561 TRADE SECRET Study Title H-24750: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-11561 Author: Carol Finlay, B.A.

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AR226-2899 FOR DP PONT USE ONLY E.

AR226-2961 DU FONT USE ONLY Du Pont HLR 448-91 Study Title STATIC, ACUTE, 96-HOUR LC50 OP TO FATHEAD MINNOWS (Pimepha Data Requirement Organisation for Economic Co-Operation and Development (OECD) Guideline for Testing Chemicals: 203 Author Keith B.

H-24889: In Vitro Chromosome Aberration Study in Human Peripheral Blood Lymphocytes AR226-3181 DuPont-6406 TRADE SECRET Testing Guidelines International Conference on Harmonisation (ICH) o f Technical Requirements for Registration o f Pharmaceuticals for Human Use.

Society of Environmental Toxicology & Chemistry Summary of DuPont Presentations AR226-3343 SETAC Europe 27 April - 1 May, 2003 Hamburg, Germany Biotransformation of the fluorotelomer 8-2 Telomer B Alcohol (8-2 TBA) in bacterial culture WangN.1, Folsom P.W. ', Szostek B.2, Capka V.2, Larsen B.S.1, Gannon J.T.1, and Buck R.C.3 1DuPont Central Research and Development, Wilmington, USA;2DuPont Haskell Laboratory; USA DuPont Chemical Solutions Enterprise, USA.

M XG _ lf-s l 55 > 0045l * POLYMER PRODUCTS DEPARTMENT MANUFACTURING DIVISION AR&6-ifSl March 19, 1990 TO: J- G.

fidA- 76 000719 DuPont Confidential Information Worker Monitoring Summary Background DuPont has manufactured fluorcfelcTner-bassd products its Chambers Works manufacturing plant for over tfnrigtfta y u n , Tlw Cfeawfecra Works is locatedin Deepwater.