STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Quail Serum and Quail Liver for `Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDYDIRECTOR Sean Gallagher UDY COMPLETED.

AR226-2159 Robert F Pinchot 07/12/2003 12:33 PM '. :: -.Ac-^l^'~ To: David M Rurak/AE/DuPontQDuPont, H David Ramsey/SE/DuPont@DuPbnt, Stephen J Gissy/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont, John J Mentink/CL/DuPorrt@DuPont, Chris E Shoop/AE/DuPont@DuPont, Bernard J Reilly/AE/DuPont@DuPont.

AR226-2277 Robert I Wevodau 05/21/2002 09:36 AM To: cc: Subject: George L Clowes_Jr/CL/DuPont@>DuPont, Ravinder Sinah/CL/DuPont@DuPont, Michael T Evans/AE,'DuPont@DuPont, Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont C8 Modeling We are anticipating that TERA will soon release an annual exposure level for C8.

AR226-2285 Frank P '^^ 05/10/200S2 0m2:4i2thPM_______________): To: cc: Sub(ect: James F Riley/CL/DuPont@DuPont, Catherine A Barton/AE/DuPont@DuPont.

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.

onciusions rrom rrevious Keview (15-bec-2003) AR226-3325 bOE Used to Screen Main Ef PFOA Levels I DuPont Confidential onpanystant.Doos 7!

AR226-3335 Datamemo Date: September 21,2000 To: Barbara S.

CorporatHeealthPhysics 3M Center2,20-2E-02 CorporatoeccupationMaeldicine PO Box33220 CorporatPeroductResponsibility st.PaulM,N 55133-3220 CorporatTeoxicology 6517331110 3M MedicalDepartment IdentificatoifFolnuorochemicailnHsuman Tissue Theobjcetiovfethisstudyistodetermitnheeconcentratriaotnioisn,humans,oflivetro serum,livertobileand biletoserum forperfluorooctanesulfon(aPtFeOS).

3M General Oflrices 3M Center St.Paul,MN 55144-1000 6127331110 May 4,2000 VIA FEDERAL EXPRESS Dr.CharlesAuer Director Chemical ControlDivision OfficeOf PollutioPnreventionAnd To)Cics UnitedStatesEnvironmentalProtectioAngency. 401 M Street,Southwest Room 403 EastTower (MailCode 7405) Washington,D.

Corporate Health Physics Corporate IndustrialHygiene & Ergonomics Corporate Occupational Medicine Corporate Toxicology 3M Medical Department 3M Center,Building220-2E-02 PO Box 33220 - St.Paul,MN 55133-3220 651 733 1110 May 3, 2000 Facsimile Dr.

3M EnvironmentaLlaboratory FinalReport-AnalyticSatludy Single-DoDsermalAbsorption/ToxiSctiutdyyofT-6053inRabbits In-VivSotudyReferencNeumber:HWI#6329-137 StudyNumber: AMDT-022195.1 TestSubstanceF:C-99(T-6053) Name andAddressofSponsor: 3M SCD Division 367 Grove Street St.Paul,MN 55106 Name and Address ofTestingFacility: 3M EnvironmentalTechnology& Services 935 Bush Avenue St.Paul,MN 55106 Method Numbers AMDT-M-1-0, AMDT-M-2-0, AMDT-M-4-0, AMDT-M-5-0, AMDT-M-8-0, and Revisions: Thermal Extractionof Fluorideby Means of a Modified Dohrmann DX2000 OrganicHalideAnalyzer-Liver FluorideMeasurement by Means ofan Orion EA940 Expandable Ion Analyzer ExtractionofFluorochemicalsfrom RabbitLiver AnalysisofRabbitLiverExtractforFluorochemicalsUsing ElectrospraMyass Spectrometry Analysisof FluorideUsing the SkalarSegmented Flow Analyzer with Ion SelectivEelectrode InitiatioDnate: See attachedprotocol Author:James D.