AR226-2467 W ..v,,- "Roger J .

AR226-2547 _____ Andrew S Hartten________________________04/12/1999 04:40 PM To: "Robert L.

RECYCLED N> AR226-2614 AR226-2614 DUPONT TELOMER MANUFACTURING SITES: ENVIRONMENTAL ASSESSMENT OF PFOA LEVELS IN AIR AND WATER Date: September 2003 Project No.: 508501 18983843.00003 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels in Air and Water______ Table of Contents TABLE OF CONTENTS Executive Summary..............................................................................................................iv 1.0 Introduction.....................................................................................................................1 1.1 Chambers W orks....................................................................... ........................ 1 1.2 Washington W orks............................................................................................ 2 2.0 Data Analysis and Analytical Reporting...................................................................... 3 3.0 Air Dispersion Modeling.............................................................................................. 4 3.1 Chambers Works - ISC3 Modeling Methodology and Results........................ 4 3.1.1 Emission Source Information................................................................. 4 3.1.2 Modeling Methodology......................................................................... 4 3.1.3 Modeling Results.................................................................................... 4 3.2 Washington Works - Screen3 Modeling Methodology and Results................. 6 3.2.1 Data and Modeling Procedures..............................................................6 3.2.2 Modeling Results.....................................................................................8 4.0 Chambers Works Groundwater Sampling.................................................................... 9 4.1 Background........................................................................................................... 9 4.2 Regional Geology................................................................................................. 9 4.3 Site Geology.......................................................................................................... 9 4.4 Site Hydrogeology...............................................................................................10 4.5 Sample Location Selection..................................................................................11 4.6 Sampling Activities and Results......................................................................... 11 4.7 Summary o f Results............................................................................................ 12 5.0 Chambers Works Surface Water Sampling................................................................ 14 5.1 Site Effluent Sample Results.............................................................................. 14 5.2 Chambers Works and Upstream Surface Water Intake Results....................... 14 5.3 Delaware River Surface Water Sampling..........................................................15 5.3.1 Delaware River - Discussion o f Results..............................................16 5.4 Salem Canal......................................................................................................... 17 5.5 Summary o f Results............................................................................................ 17 6.0 Conclusions...................................................................................................................18 7.0 References.....................................................................................................................19 EnvIronmentalAssessmentdoc Oct. 1, 03 Wilmington, DE DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels In Air and Water______ Table of Contents Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 TABLES CATT Established Screening Levels.......................................................... vi Summary o f Air Dispersion Modeling Results.......................................... vi Summary o f Groundwater Sampling Results-Chambers W orks...............vi Summary o f Surface Water Sampling Results-Chambers W orks............ vi Chambers Works Stack Parameters and Emission Rates.............................5 Chambers Works Building Heights.............................................................. 5 Chambers Works Site Air Dispersion Modeling Results.............................6 Chambers Works Telomers Operations Air Dispersion Modeling Results6 Washington Works GEP Stack Heights........................................................ 7 Chambers Work Groundwater Analytical Results..................................... 12 Chambers Works Outfall DSN001 Results.................................................14 Chambers Works Surface Water Intake Results........................................ 15 Chambers Works Delaware River Sampling, June 9, 2003.......................... .......................................................................................

AR226-2709 31 American Chemical Society (ACS) Summary of DuPont Presentations AR226-2709 Annual Meeting, August 2004 Extraction of Perfluorooctanoic Acid from Polytetrafluoroethylene Polymers and Determination by LC/MS/MS Barbara S.

AR226-2815 SPONSOR APME Avenue E. van Niewenhuyse 4 BOX 3 B-l 160 Brussels Belgium TESTITEM AMMONIUM PERFLUOROOCTANOATE (APFO) STUDY TITLE ALGAL INHIBITION TEST DATA REQUIREMENT Directive 92/69/EEC C.3,31st July 1992 OECD Guideline No. 201, 7th June 1984 US EPA/OPPTS 850.5400 Guidelines, April 1996 STUDYDIRECTOR Jacques LUaridon EXPERIMENTAL COMPLETIONDATE 7 March 2003 DATE OFISSUE J<G <eo(^ TEST FACILITY CIT BP 563 - 27005 Evreux - France LABORATORYSTUDY NUMBER 23685 EAA IFM Recherche S.N.C. au Capital de 846.092 7 0 8 0 6 0 46 2 R.C.S.

AR226-2859 Company Sanitized.

AR226-3049 Study Title Approximate Lethal Dose (ALD) of H-21953 in Rats I ohomtnry Project ID Haskell Laboratory Report No. 795-96 Author Tracy A.

AR226-3112 S ABIO TIC DEG RADATIO N: H YDRO LYSIS A S A FUN C TIO N O F pH (PR ELIM INA RY TEST) Sponsor DuPont Specialty Chemicals Jackson Laboratory Chambers Works Deepwater NJ 08023 USA Research Laboratory Huntingdon Life Sciences Ltd Eye Suffolk IP23 7PX ENGLAND Draft: 23 December 1998 Final: 2 February 1999 aswpssif SanHteed.

TRADE SECRET Study Title H-24943: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-6544 AR226-3195 DuPont-6544 Author: Carol Finlay, B.A.

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AR226-3350 Biotransformation of the 14C-labeled Fluorotelomer 8-2 Telomer B Alcohol* Wang N.1.

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3M Corporate Toxicology and Regulatory Services 3M Center, Building 0220-06-E-03 St.

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