BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE October 2003 Click on Study Title to View Report October 16, 2003 "Review of proliferative lesions of the exocrine pancreas in two chronic studies in rat with ammonium perfluorooctanoate," S.R.

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AR226-1807 Estimated Quantities Of Aqueous Film Forming Foam (AFFF) In The United States RECEIVED OPPT NCIC 2004 AUG 26 Prepared for the Fire Fighting Foam Coalition Arlington, VA August 2004 Robert L.

3M General Offices f\ ti U L 1 'f - R?

September 17, 2004 By Certified Mail r, c~-o ?

A&M6-IHAO DuPont-13788 Review op Proliferative Lesions of t h e Exocrine Pancreas in Two Chronic Feeding Studies in Rats w ith A mmonium Perfluorooctanoate .

AR226-2285 Frank D S m ith 05/10/2002 02:42 P M To: Jam es F Riley/CL/DuPont@ DuPont, Catherine A Barton/AE/DuPont@DuPont, Kenneth N W ood/AE/DuPont@ DuPont, Craig L Bartletl/AE/DuPont@DuPont c c: Isidores JZan ikos/A E/D uP ont DuPont, M ichael J Lukas/AE/DuPontDuPont, R 0 3 3 E Austin/AE/DuPont@ DuPont@ DuPont, Bernard J Reilly/AE/DuPont@DuPont Subject: Parkersburg N ew s & Sentinel Coverage on C -8 Protective Level Circleville Team, In light of the new drinking water standard as discussed in the attached, we need to re-evaluate our sam pling plans for C ircleville.

AR226-2521 C-8 DATA SUMMARY REPORT CONSENT ORDER GWR-2001-019 DUPONT WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS ') Dale: February 2003 Project No.: 7423 18983753.00036 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 A SH 021621 BID639853 0 -8 Data Summary Report Table of Contents TABLE OF CONTENTS Executive Summary.... ,......................................... 1.0 Introduction ............................... 1.1 Document Organization....................... 2.0 C-8 Analyses and Analytical Reporting,,...,,,,, 2.1 Independent Quality Assurance Review 3.0 Washington Works Facility....... .......................................... .......-.................... 7 3.1 Introduction...................................................................... ................................ 7 3.2 Task A: Groundwater Well and Water-Use Surveying and C-8 Sampling,...,.,,,............................................. ...................................................... 7 3.2.1 One-Mile Radius Sampling............................... 7 3.2.2 Two-Mile Radius Sampling.... ................. 8 3.2.3 Ohio One-Mile Sampling.................................................................... 9 3.2.4 Ohio Two Mile Sampling ................. ................................... --9 3.3 Task B: Assessment of Existing Groundwater and Surface-water Monitoring Data....... ...................,...,............................................................ 10 3.3.1 Monitoring o f C-8 in Groundwater and Surface Water.....................10 3.3.2 Ohio River Water Quality,.....,...................................... 12 3.3.3 Public Water Supply Sampling.............................................. .. 13 3.4 Task C: Plume Identification/Groundwater Assessment..................14 3.4.1 Installation ofNew Wells at the Washington Works Facility...........14 3.4.2 Hydrogeologic Testing of New Wells at the Washington Works Facility...................................................... 14 3.4.3 Washington Works Groundwater Model Refinement....... ......... 15 3.4.4 Surface-water Field Reconnaissance at the Washington Works Facility........ ........................... 15 3.4.5 C-8 Monitoring in Groundwater and Surface Water at the Washington Works Facility...................................... 15 3.4.6 Washington Works Facility Site Conceptual Model Refinement....,..,....,....,........,.,.........,........ 16 3.5 Revised Site Conceptual Model......................... 16 3.5.1 Current Environmental Setting...........................................................16 3.5.2 Current Human Health and Ecological Exposure Pathways............. 21 3.6 Washington Works Facility Summary............. 24 4.0 Local Landfill................................... . ****>**!

Washington Works MH ao N >OB4 O EPA/COE Update Meeting M y 18, 2002 AR226-2552 EID781150 Agenda Background/Recent Project Activity --RCRA Program Status --Multi-Media Consent Order Update --GW Modeling Project Review Preliminary GW Modeling Results RCRA Program Path Forward --RFI Report/EPA Review --El Status Meeting Objectives Provide brief overview o f recent MMCO activity at Washington Works Re-assess where we stand with regard to EPA Region III RCRA program, determine next steps (i.e., RFI, E.I.s) Receive technical feedback from EPA/COE on the newly constructed Wash Works GW Flow Model Background/Recent Activity RCRA Program Status - EPA reviewing RFI report --C-8 screening levels needed for completion - El evaluation also on hold pending C-8 screening levels --Ongoing GW Modeling project will address EPA/COE 2001 comments on 1999/RFI version o f GW Model 1in0 cn 8Z0HSV Background/Recent Activity mH saow j Multi-media Consent Order (WVDEP) Required Elements: - Toxicology/CAT: Develop RBC-Like screening levels for dw, soil, and air - GW/SW Investigation/GIST: Determine extent in groundwater & surface water at/near sites - Cap/reduce emissions to air & sw EID781154 CAT Highlights Toxicology team met May 5-7.

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September 29,2006 Page 3 ATTACHMENT 2 Tables and excerpts from the draft protocols that contain raw data C-8 blood levels.

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INTERIM REPORT # 2-AnaIvsis of Surface Water Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE March 22, 2005 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.