T herIm m u n e Research Corporation Sponsor: 3M Corporate Toxicology Building 220-2E-02, 3M Center St.

/)Rm-OHI Submitted to : BIOSEARCH, INC. p.o. box 8598 Philadelphia, Pennsylvania 19101 te leph one: (215) 848-4499 3M Company 3M Center S t .

AR0U'OM3 C O R N IN G Hazleton MUTAGENICITY TEST WITH // ^ '< A \ T-6342 i \* IN THE SALMONELLA - ESCHERICHIA COI//MAMMALIAN-MICRSOME REVERSE MUTATION ASSAY ir-- - ^ FINAL REPORT AUTHOR Timothy E.

Pathology and Toxicology RMcar Laboratories, Inc.

A R IO S I?

3M General Offices 3M Center St.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 DAYTON, OHIO OFFICE SUITE 900 110 NORTH MAIN STREET DAYTON, OHIO 45402-1786 937-228-2838 FAX: 937-228-2816 R o b e r t a .

AZ2Z(o- tf3C> February 1, 2005 Data Validation for PFOS/PFOA Oakdale Project (MDH Sample Numbers 200501211-200501219) Sample receipt: Samples were received in good condition.

AR226-2187 EXPOSURE EVALUATION FOR NEW PROCESS AT FAYETTEVILLE SITE Prepared by DuPont Engineering Technology Debbie Mulrooney Cathie Barton August 20, 2001 Revised February 20, 2002 EDD0068699 TABLE OF CONTENTS Executive Summary 1. introduction 2.

I AR226-2215 EID294840 il Vapor Scavenging Coeffioent Liquid Precipitation Frozen Precipitation C8 Particle Density 2.2 o/cm8 3 .0 -s .o 1.0 *3.0 0.5* 1.0 0.3 - 0.5 0.1 -0.3 f 1 |Lpif ill 13b ilia ifir li _ ' a te is based on testing conducted at the Washington Works site in September, 1996. 6 Particulate scavenging coefficients for liquid precipitation are from Figure 1*111nthe EPA ISC Users Guide (Volume II). 6According to Section 1.4 of the EPA ISC Users Guide (Volume II), the scavenging rate coefficients for frozen precipitation are expected to be reduced to about 1/3 of the values In Figure 1*11. 7.0% 12.5% 6.8% 31.5% 42.2% 5.5% 20,0% 0.25% 8.25% 66.0% 0.75% 1.75% 3.5% 25.0% 69.0% o;o% 16.5% 3.5% 42.0% 38.0%

AR226-2424 LETART LANDFIL-- groundwater MONITORING SUMMARY Of FC~143* ANALYTICAL RESULTS Sample location Upper Pond Lower Pond Upper Pond Lower Pond ` Well 1 Well 2A Well 3 Well ?

AR226-2474 To: Ton RoelenyEUR/DuPont@>DuPont, David M Rurak/AE/DuPont@DuPont, Katsunosuke Kitagaw a/PO /D uPont@ D uPont cc: Frenk Hulsebosch/EUR/DuPont@DuPont, Oscar T Garza/AE/DuPont@DuPont, Roger J ZipfeI/AE/DuPont@DuPont, Toni S Hess/HO/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, Patrick E Lindner/AE/DuPont@DuPont, Michael E McCord/AE/DuPont@DuPont Subject: TEST M ATRIX FOR C-8 FROM DIFFERENT SOURCES Ton, Dave and Kitagawa-san, Attached is a chart summarizing the tests performed (or successfully used) for C-8 from various sources.

AR226-2570 [Andrew S Hartten To: Mary A Kaiser/AE/DuPont@DuPont cc: John R Bowman/AE/DuPont@DuPont Subject: Sampling Program Mary, l6/0T/20di'Q5T02 PM t I'm a little concerned about the decision to contract Battellle to provide sampling services related to the Consent Order.

RECYCLED "I AR226-2630 00 AR226-2630 DuPont Modeling Methodology and Results Dordrecht Site June 2003 About the Model I Industrial Source Complex Short Term 3 (ISCST3) I Sold/used globally, including in The Netherlands http://www.phoenix-r.co.jp/products/products.htm I Input I Stack height, diameter i Flowrate, temperature I Mass of pollutant (mass per time) i Local meteorological data (Rotterdam, 1996 - 2000) 1 Output l Ambient air concentrations in ug/m3 I Max values and locations outside the property line Prevailing wind Facility Ambient annual ground level concentration in ug/m3 Model Calculations I Ambient air concentrations based on Gaussian Equation I Concentration a function of a vertical term and a dispersion term I Vertical term based on stack height, receptor elevation, plume rise, mixing I Dispersion parameters describe distribution of pollutant in lateral and vertical Dordrecht M odeling Inputs Stack Param eters PTFE S t a c k H eight (m) 20.95 S ta c k Diam.

Mm g. 690 TRADE SECRET Study Title EVALUATION OF THE BIODEGRADABILITY OF USING THE CLOSED BO?