BACK TO MAIN TOXICITY TO FISH (Freshwater Rainbow Trout) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder of uncharacterized purity.

BACK TO MAIN Summary of Nalve Rat/Rat ChowFish Meal Study Analyses Conducted by the 3M Environmental Lab (prepared 03/01/01) Naive Rats (Taken from summary report issued in 1998.)

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BIOCONCENTRATION - REVISED TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample from 3M production lot number217.

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AR226-2001 To; R.D.

AR226-2334 Modellne - CAB - 5/7/03 Source ID 1 Z Description Pre-scrubber exit for fine powder scrubber (called "AC Scrubber' on map) Post-scrubber exit for fine powder scrubber (called "AC Scrubber' on map) .

AR226-2336 DuPont Modeling Methodology and Result DRAFT Shimizu Site June 2003 About the Model Industrial Source Complex Short Term 3 (ISC Sold/used globally, including in Japan http://www.phoenix-r.co.jp/products/products.htm Input Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour) Local meteorological data (Shizouka 1997, 98, 99 Output Ambient air concentrations in ug/m3 Max values and locations outside the property lin 'asr Prevailing wind Facility Ambien ground concent ug/ Model Calculations Ambient air concentrations based on Gaussia Equation Concentration a function of a vertical term a dispersion term Vertical term based on stack height, recepto elevation, plume rise, mixing Dispersion parameters describe distribution o pollutant in lateral and vertical '^f^^S^^?

AR226-2407 INTEROFFICE MEMORANDUM Date; From; Deptt Ti No: 13-Mar-1990 06;26pm Milliam E.

AR226-2552 -^ Washington Works EPA/COE Update Meeting July 18, 2002 Agenda Background/Receat Project Activity - RCRA Program Status - Multi-Media Consent Order Update - GW Modeling Project Review Preliminary GW Modeling Res RCRA Program Path Forward - RFI Report/EPA Review -El Status Meeting Objectives Provide brief overview of recent MMC activity at Washington Works Re-assess where we stand with regard t EPA Region HI RCRA program, determ next steps (i.e., RFI, EJ.s) Receive technical feedback from EPA/C on the newly constructed Wash Works Flow Model ^K Background/Recent Activi RCRA Program Status - EPA reviewing RFI report - C-8 screening levels needed for completio --- El evaluation also on hold pending C-8 screening levels - Ongoing GW Modeling project will addre EPA/COE 2001 comments on 1999/RFI version of GW Model Background/Recent Activi Multi-media Consent Order (WVDEP) Required Elements: - Toxicology/CAT: Develop RBC-Like screening levels for dw, soil, and air - GW/SW Investigation/GIST: Determme in groundwater & surface water at/near sit - Cap/reduce emissions to air & sw CAT Highlights Toxicology team met May 5-7.

AR226-2617 5 2003-DuET-??

AR226-2651 41 AR226-2651 Verification Study for Air Dispersion Modeling at Fenceline Draft Plan October 2003 Table of Contents I.

AR226-2840 BIOASSAY REPORT SUBMITTED TO E.

FOR DU PONT USE ONLY AR226-2945 Du Pont HLR 107-90 Study Title Approximate lethal Dose (ALO) of In Rats Author .

FORDUPONTUSEONLY AR226-2962 Du Pont HLO 432-91 StudyTitle Skin Sens itization Test with in Guinea Pigs StudyCompletedOn July 31, 1991 ContractingLaboratory Pharmakon Research International, Inc .