3M General Offices 3M Center St.

BACK TO MAIN TOXICITY TO AQUATIC PLANTS (Freshwater alga, Anabaena flos-aquae) 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 number 217.

3M General Offices 3M Center St.

W 2 - Z 6 - II 7 7 REC EIV ED MAY - 6 2002 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION III 1650 Arch Street Philadelphia, Pennsylvania 19103-2029 APR 2 4 2002 Robert A.

R ep ort T itle Evaluation of the Northwest Bioanalytical Method V alidation Reports fo r PFOS and Related Analytes in Human Serum or Plasma in Meeting the Requirements o f the - _________EDA BioanalyticaLMethod Validation QAI Report No. 405-503 Data R equirem ent Full Validation o f Bioanalytical Method Author Nancy Benson Philippe Ourisson Quality Associates, Inc. 9017 Red Branch Road, Suite 102 Columbia, MD 21045 Sponsor 3M Environmental Laboratories 935 Bush Avenue Bldg 2-3E-09 St Paul, MN 55106 R eport Date December 31,2001 Report Number QAI 405-503 Number o f Pages 26 TABLE OF CONTENTS QAI Report No. 405-503 I.

Medical Center NEBRASKA'S HEALTH SCIENCE CENTER June 18, 2004 PATHOLOGY AND MICROBIOLOGY John L.

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amr r i 63050000008/S Monitoring and Reduction Efforts in Decatur, AL Daikin America November 8, 2004 Outline of Presentation Overall site objectives Waste Water and Sludge - Monitoring Results - Reduction Project to Reduce PFOA in Waste W ater Surface Runoff Monitoring Results Soil and Groundwater Monitoring Results Reduction of PFOA from Vaporizer Summary of Overall Site Reduction Overall Site Objectives Identify the major sources of PFOA through screening level monitoring - Daikin - Other/ Implement measures to reduce PFOA releases to the environment as soon as possible Waste Water Monitoring Waste W ater to Tennessee River (NPDES Permit AL0064351,DSN 001) Date 7/13/2003 9/25/2003 11/11/2003 12/10/2003 1/6/2004 2/23/2004 3/8/2004 4/12/2004 5/11/2004 6/2/2004 7/13/2004 8/5/2004 9/16/2004 10/7/2004 Sample 677 Duplicate Average' 700 689 Field Blank Units 1.11 ng/mL or ppb 1010 997 1004 ng/mL or ppb 1130 1100 1115 ng/mL or ppb 599 599 0.282 ng/mL or ppb 1260 1310 1285 1.8 ng/mL or ppb 546 546 ng/mL or ppb 761 874 818 ng/mL or ppb 1960 2030 1995 ng/mL or ppb 1610 1630 1620 ng/mL or ppb 1520 1520 ng/mL or ppb 901 901 ng/mL or ppb 426 424 425 ng/mL or ppb 1450 852 1540 851 1495 852 ng/mL or ppb ng/mL or ppb Type 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite Exygen Report# L34865 L35195 L0001297 L0001445 L0001562 L0002120 L0002044 L2328 L2477 L0002651 L0003031 L0003076 L0003412 L0003561 Sludge Monitoring Results Sludge from Utility (Sent to Subtitle D Landfill Permit # 40-08 by ADEM) Date 9/25/2003 12/10/2003 3/8/2004 5/11/2004 8/5/2004 10/7/2004 Sample 9.4 29.1 6.43 10.40 2.55 3.97 Duplicate 9.3 28.3 6.36 10.70 2.31 4.04 Average 9.3 28.7 6.4 10.6 2.4 4.0 % Solids 46.94 48.73 55.65 54.32 49.46 56.15 Units ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm Type 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite Reported on Dry Weight Basis Exygen Report # L35195 L0001445 L0002044 L2477 L0003076 L0003561 Telomer Finishing Facility Waste W ater from Telomer Finishing Facility to POTW (SID Permit IU 0852 00384, DSN 006) Date Sample Duplicate Average Field Blank Units 7/15/2003 153 163 158 ND ng/mL or ppb 12/11/2003 67 63 65 ng/mL or ppb 3/26/2004 15.7 15.7 ng/mL or ppb 5/12/2004 47.9 46 46.9 ng/mL or ppb 8/4/2004 54.4 54.4 ng/mL or ppb Type Grab from tank Grab from tank Grab from tank Grab from tank Grab from tank Exygen Report # L34865 L0001445 L2328 L0002651 L0003076 Project to Reduce PFOA in Waste Water PFOA Reduction Waste Water Stream PFOA Reduction Waste Water Stream PFOA Reduction Waste Water Stream Project Schedule: - Installation Complete: - Start-up/Commissioning - Normal Operation: July 04 Aug-Nov 04 Dec 04 Project Status: - Capital Cost: - Initial results shows well. - System nearing turnover to Operations.

January 28, 2005 KiX.VED PPT CBtC I&JII131 AH!

TestResults AR226-2118 r!

AR226-2204 F.

AR226-2223 f Mary A K a i s e r __________________ 12/04/2001 03:03 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Barbara S Larsen/AE/DuPont, Daryl P Cobranchi/AE/DuPont@DuPont Subject: Re: Mulit Media Consent Order APFO data requirements O Barbara Larsen, Daryl Cobranchi and I designed an experiment to get headspace concentrations (see your note below).

AR226-2235 Steven L Grise 12/14/2001 09:50:47 AM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont, Bernard J Reilly/AE/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont Steven L Grise/AE/DuPont@DuPont C.O.

AR226-2489 DuPom Washington Works P.0-.Bos':2!

Dupont Fluoroproducts AR226-2612 Chestnut Run Plaza P. 0 .