: CAS Number 376-14-7 3M Company AR 826 OSES 1 Voluntary Use and Exposure Information Profile N-ethyl perfiuorooctanesulfonamido ethyl methacrylate I CHEMICAL IDENTIFICATION Chemical Name: N-ethyl perfluorooctanesulfonamido ethyl methacrylate (EtFOSEMA) CAS Number: 376-147 IL COMPANY IDENTIFICATION Company Name: 3M Site Location: 10746 Innovation Road Cottage Grove, MN 55016 1400 State Docks Road Decatur, AL 35601 Technical Contact: W.A.

AR 226 ~ 0782 ACUTE TOXICITY TO FISH (RAINBOW TROUT) IESTSUBSTANGE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206 or L- 3243. (1-Octanesulfonic acid) (CAS # 2795-39-3). 2R0e6ma(rLk-3s2:43).

AR 826-081) TOXICITY TO AQUATIC PLANTS TesTsusstance Identity: ArefmeirxrteudrteocaonstPaiFnOiSng, pFeCr-f9i5u,oroorocatsanaescuolmfponoanteen,twohficFhC-m2a0y6CaEls.o b(1eOctanesulfonic acid) (CAS # 2795-39-3).

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BACK TO MAIN STABILITY IN WATER (PHOTOLYSIS) TEST SUBSTANCE Identity: Remarks: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE alcohol. (1-Octanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2hydroxyethyl)-, CAS # 1691-99-2).

BACK TO MAIN BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, FC-109-X, FC-4351, or L-6778.

AR226-2097 Test R,, esul,ts Sample Date Range Concentration Range Action Level Industrial.Hygiene 1/1/97 12(31/97 100% Sample Dt Sample* Duration Type Emptoyee Name BTO; 07 TECHNICAL HOC: 252 BLDQ.3-QEN6RAL 6/25/97 6890 390 A Pers Chemical OWC-143 BTO; 08 TEFLON lOC; MS BLDG. 162 ROOF- GENERAL 7007 7137 362 A 7/EKI7 7138 362 A 7/2107 7139 7C1/97 7219 370 A 371 A 7/21/87 72 368 A 7/2207 7140 370 A 7/22B7 7220 374 A 7/22/97 72% 375 A 7/22S7 7232 384 A 7/2387 7141 7/23B7 7221 386 A <100 A 703(97 7227 374 A 7/23897 7233 331 A 7/24(97 7142 362 A 7/24(97 7222 381 A 7/2497 7228 338 A 7/247 7234 7C5S7 7223 7<2S(97 7229 366 A 354 A 351 A 7/25(97 7235 351 A 7C9S7 7230 8(507 7224 378 .A 378 A ?

AR226-2234 Steven L Grise 12/12/2001 03:26:26 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPont@DuPont Bernard J Reilly/AE/DuPont@DuPont, Robert P PinchoVDEV/AE/DuPont@DuPont Re: C.O.

AR226-2276 Privileged and C Draft Attorney Wo Figure 2 Privileged and C Draft Attorney Wo 4348500-1 4348000-4 4347500-^ 11l 11 1111 11 ++++++++++ + + + + + 4-4-4-4-4-4-4-4-4-+ + + + + + + + + + + + + 4-4-4-4-4-.+4-4-4-4- + + + + + + + + + +4-4- + ++ +++ + 1 + + + + 4- ++++++++++ + + + + +++-++++ + + + 4- + ++++++++++ + + + + +++-++++ + + + + 4-4-44-4-4- ++++++++++ ++++++++++ + + + + + + + + +++-++++ + + + + + 4-4-4- ++++++++++ + + + + + + + + + 4-4-4- ++++++++++ + + + + + + + 4347000-4 4346500H .

AR226-2359 DRAFT PHASE II QUALITY ASSURANCE PROJECT PLAN DUPONT WASHINGTON WORKS SITE WASHINGTON, WEST VIRGINIA Date: March 2004 Project No.: 507532 18983990.04006 ^ CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 EXP000431 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Quality Assurance Project Plan Table of Contents TABLE OF CONTENTS 1.0 Project 1 Management................................................................................................... 1.1 Project Background.....................--.--............................................................... 1 1.2 Project Description............................................................................................ 2 1.3 Project Organization..........................................................................................3 1.3.1 Project Director.................................................................................... 3 1.3.2 Project Manager................................................................................... 4 1.3.3 Health and Safety Officer.................................................................... 4 1.3.4 Project Geologist................................................................................. 4 1.3.5 Technical Consultants.......................................................................... 4 1.3.6 Technical and Support Staff................................................................ 4 1.3.7 Quality Assurance Officer................................................................... 5 1.3.8 Project Chemist................................................................................... 5 1.3.9 Laboratory Personnel........................................................................... 5 1.3.10 Data Review Responsibilities.............................................................. 5 1.4 Quality Objectives............................................................................................. 6 1.4.1 Data Quality Characteristics................................................................ 6 1.4.2 Data Quality Objectives....................................................................... 6 1.4.3 Measurement System Characteristics.................................................. 7 1.5 Training/Certification........................................................................................9 1.6 Documentation and Records............................................................................. 9 1.6.1 1.6.2 1.6.3 1.6.4 1.6.5 1.6.6 1.6.7 Document Control ...............................................................................9 Field Logbook...................................................................................... 9 Sample Log........................................................................................ 10 Laboratory Deliverables.................................................................... 10 Report Preparation............................................................................. 13 Electronic Data Deliverables............................................................. 13 Archival Requirements..............................,..........,.........----....--... 13 2.0 Data Generation and Acquisition............................................................................. 14 2.1 Sampling Process Design................................................................................ 14 2.1.1 Sample Naming ................................................................................. 14 2.2 Sampling Methods.........,......--...............--.................------.......------. 15 2.2.1 Preliminary Activities........................................................................ 15 2.2.2 General Instructions for All Sampling............................................... 16 2.2.3 Soil Boring and Soil Sampling.......................................................... 18 2.2.4 Well Construction in the LHWA Well Field..................................... 19 2.2.5 Well Development............................................................................. 19 2.2.6 Groundwater Sampling (Wells)......................................................... 19 2.2.7 Groundwater Sampling (Taps)...................-.........-.-.................-.... 21 2.2.8 Surface Water Sampling of Springs and Cisterns. ----......--........... 21 2.2.9 Air Modeling Verification Study Sampling.......--......----.................22 2.2.10 Meteorological Measurements..--.......----.--...------.---- .....23 <N 2.2.11 Surface Soil/Biota (Vegetation) Sampling .................................--..24 o -------------------------------------------------------------------------------------------------------------------------------------------------------------------- 0 0.-:'' Phase II Quality Assurance Project Plan_033004.doc I ~ .

AR226-2458 t > i FT"-^ r'" i j Stephen Opp 05/17/99 01-.40 PM To: cc: Subject: Roger J 2ipfel/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont Andrew S Hartten/AE/DuPont@DuPont Washington Works Groundwater Results Summary Tables Roger and Bob; Attached you will find a spreadsheet that summarizes the 2 groundwater sampling events at Washington Works.

AR226-2648 38 ^ ff ^ H- AR226-2648 TECHNICAL REPORT IN-SITU TREATMENT OF SURFACTANT-CONTAMINATED AQUIFER BY ELECTROCHEMICAL PROCESSES submited to Du Pont Company and Delaware State Research Partnership March, 1994 by 0 C.

AR226-2686 CO AR226-2686 Perfluorinated Surfactants 'Dupont / UvA / RIKZ Meeting, 07-05-200; "Perfluorinatecr" surfactants A desk study on the use and environmental effects of perfluorinated surfactants in the Netherlands Floris Hekster & Pirn de Voogt A desk study commissioned by the Dutch Ministry of Transport, Public Works ____ ____ ___and Water Management ____ EID676803 Perfluorinated Surfactants 'Dupont / UvA / RIKZ Meeting, 07-05-2002 Outline of the presentation -y Goals ne ble of contents report / Methodology Available knowledge Remaining questions/ uncertainties A desk study commissioned by the Dutch Ministry ot Transport, Public Wolks ____ __ and Water Management ______ ___ EID676804 Perfluorinated Surfactants ' Dupont / UvA / RIKZ Meeting, 07-05-20 The study has three major goals 1.