O ff 3M 3\1 General Offices 3M Center ^ ' ^ 55IJ4-,00 * * 2 - 2 .1038 ftR 86H Q . -.& J O I - 0 5 1 3 September 5, 2001 Document Processing Center (7407) Office o f Toxic Substances U.S.

^ R5 G_ M-I Telomer Research Program (TRP) Update Presented to U.S.

M ^ s.6- M i r Wff Tcco:: SMtaerpyhDenomHinKiaokrz/DeCni/oUwSsEkPi AS/UteSp@heEnP.HA.

AAA6 - ll<W TWO-MILE RADIUS SURVEY AND C-8 SAMPLING REPORT DUPONT WASHINGTON WORKS FACILITY/LOCAL LANDFILL, WEST VIRGINIA (MARCH - MAY 2002) T 'O o cn ~Ui0*-77 Date: August 2002 Project No.: D6WW7423 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 CONTAJN NC 000365 Two-mile Radius Survey and C-8 Sampling Report Table of Contents TABLE OF CONTENTS 1.0 Introduction...................................................................................................................1 2.0 C-8 Analyses and Analytical Reporting...................................................................... 3 3.0 Washington Works Facility/Local Landfill Two-mile Radius Survey Summary of Results......................................................................................................5 4.0 Re-sampling of Selected Residences Located Within the One-Mile Radius..............6 5.0 Results for Additional Sampling Locations................................................................. 7 6.0 Path Forward................................................................................................................ 8 7.0 References.................................................................................................................... 9 Table 1 Table 2 Table 3 Table 4 TABLES Summary of Off-site Sampling Program (C-8 Sampling) Summary of C-8 Analytical Results in Groundwater and Surface Water (Off-site Wells, Springs, and Cisterns) Local Landfill Two-mile Radius Summary of C-8 Analytical Results in Drinking Water (Off-site Wells, Springs, and Cisterns)--One-mile Radius Re-sampling at Washington Works Facility/Local, Letart, and Dry Run Landfills Summary of Additional C-8 Analytical Results in Groundwater and Surface Water Figure 1 FIGURES Washington Works Facility and Local Landfill Two-mile Radius Map Appendix A Appendix B APPENDIX Two-mile Radius Well Survey Results--Washington Works Facility and Local Landfill DuPont Washington Works West Virginia Miscellaneous Groundwater Samples WV-2 report.doc Jul. 31, 02 Wilmington, DE 000366 i Two-mile Radius Survey and C-8 Sampling Report Introduction 1.0 INTRODUCTION A multi-media consent order (Order No.

TSCA NCIC Notification Form for CB!

a.a 6 -- TOXICITY TO TERRESTRIAL PLANTS 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: The test substance is a white powder.

2-4.

CC: H.

AR226-1742 PFOS: A PILOT REPRODUCTION STUDY WITH THE MALLARD FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

Enclosure 5 Analytical Report Fluorochemical Characterization of Water and Sediment Samples Decatur Bakers Creek #2 - July 2003 (E03-0561) Exygen Research Laboratory Report No.

Northwest Bioanalytical Study No.

3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE April 2004 Click on Study Title to View Report April 16, 2004 Butenhoff, J.L., et al., "Characterization of Risk for General Population Exposure to Perfluorooctanoate," Regulatory Toxicology and Pharmacology 39 (2004) 363-380, April 16, 2004

/dR226- ACUTE TOXICITY TO FISH 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, orFC-109-X.

A(U2rO51% PFOA and Associated Salts Ecotoxicity Elements Title Activated Sludge R espiration Inhibition T es t - F C -1 0 1 5 -X Acute Toxicity o f F C -1 01 5 to the Fathead Minnow, Pim ephales prom elas Growth and Reproduction Toxicity Test with F C -1 01 5 and the Freshw ater Alga, Selenastrum capricornutum Acute Toxicity o f F C -1 0 1 5 to the Daphnd, D aphnia m agna Laboratory or Author 3M Env.

3M General Offices March 17, 2000 3M Center 1 1 H Q - 0 3 0 0 - 0 0 3 7 3 u St.