AR226-2309 ^y Mark C Hause 03/12/2003 04:25 PM To: cc: Subject: David M Rurak/AE/DuPont@DuPont Catherine A Barton/AE/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont ISC Model Dave, Per our discussion, I have spoken with Cathie on the need to investigate the model and its validity for 1 and 8 hour periods.

AR226-2329 ""-.f / IreneALegiec___________04/TO/2003 09:58 AM To: cc: Subject: Mark D Richmond/AE/DuPorrt@DuPont, Carl E Camp/AE/DuPontQDuPont.

AR226-2347 Relevance of Soil Sampling in Screening Level Assessments PFOA October 22,2003 Discussion Topics Review soil sampling key learning^ Present site screening level assessmen conceptual model Messages For Today Soil sampling is not critical to site scre level assessments designed to evaluate overall human and environmental expo at a PFOA use facility.

AR226-2507 COMPILATION OF HISTORICAL C-8 DATA DUPONT WASHINGTON WORKS MAIN PLANT AND LANDFILLS Kate: Jattttiay 2002 Projtct Mo; D6WW7423 h ^ CORPORATC R6MEDIAT1CW GROUP ftnAlSancobetttwin DuPci^ and OfiS DimwntI Bailey Ml PteHi.

AR226-2599 ^ Andrew S Hartten 02/13/2003 02:32 PM To: ce: Subject: "Steve Williams" <steve.williams@epa.state.oh.us> @ DUPONT_MHUB "Michael Preston" <michael.preston@epa.state.oh.us>, "Sarah Wallace" <sarah.wallace@epa.state.oh.us>, M.

Analyse von Kltemittel-Emissionen der Klte- und K limaanlagen in Deutschland Aktuelle Analyse von rund 54.000 Anlagenbetreibern mit mehr als 238.000 Klte- und Klimaanlagen der VDKF-LEC-Nutzerdaten Zur Sicherstellung der geforderten und gesetzlich vorgeschriebenen Aufzeichnungspflichten sowohl fr den Klte-Klima-Fachbetrieb als auch fr Betreiber von Klte- und Klimaanlagen setzen mittlerweile ber 1.100 Fachbetriebe und Anlagenbetreiber in Deutschland und der EU auf VDKF-LEC.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 238586 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: 07/29/2005 Signature Name: Richard C.

A l W - o 157 3M Environmental Laboratory__________________________ Final Report- Analytical Study Single-Dose Intravenous Pharmacokinetic Study of T-6053 in Rabbits In-Vivo Study Reference Number: HWI#6329-136 Study Number: AMDT-010495.1 Test Substance: FC-99 (T-6053) Name and Address of Sponsor: 3M SCD Division 367 Grove Street St.

BACK TO MAIN STABILITY IN W A TE R (HYD RO LYSIS) TEST SUBSTANCE____________________ Identity: Perfluorooctanesulfonate-potassium salt.

3M Lifetime Drinking Water Health Advisory for Perfluorooctanoate - January 28, 2002 3M Lifetime Drinking Water Health Advisory for Perfluorooctanoate Authors: (7c^ ?

3M General Offices 3M Center St.

ARW>i65Attachments to Letter to C.

3M Specialty Materials 3M Center St.

\\G1 O.E P.A.

'Ui /Y R a 1 6 - 1176 2003 JH 15 IN THE CIRCUIT COURT OF WOOD COUNTY, WEST VIRGINIA JACK W.