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f\R &SL6 _ I 5 S T TWO-MILE RADIUS SURVEY AND C-8 SAMPLING REPORT WASHINGTON COUNTY, OHIO (JUNE - SEPTEMBER 2002) Date: December 2002 lte> A CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 Project No.: D6WW7455 18983637 ( N Tpm 0 ^ 5 30 0_3_ --m a o roo 000206 WVDEP 17198 Two-Mile Radius Survey and C-8 Sampling Report Table of Contents TABLE OF CONTENTS 1.0 Introduction................................................................................ 1 2.0 C-8 Analysesand Analytical Reporting.......................................................................3 3.0 Two-Mile Radius Survey Summaryof Results............................................ 5 4.0 References....................................................................................................................6 Table 1 Table 2 Figure 1 Figure 2 Figure 3 TABLES Summary of Off-site Sampling Program (C-8 Sampling), Ohio Two-Mile Radius C-8 Residential Sampling Summary of C-8 Results Zones A, B, and C, Ohio Two-Mile Radius C-8 Sampling Program FIGURES Two-Mile Radius Survey Area, Washington County Ohio Two-Mile Radius - Detailed C-8 Results, Washington County, Ohio One- and Two-Mile Radius - Summary C-8 Results, Washington County, Ohio APPENDICES Appendix A Two-mile Radius Well Survey Results--Washington County, Ohio OH-2 report.doc Dec. 9, 02 Wilmington, DE 000207 I Two-Mile Radius Survey and C-8 Sampling Report Introduction 1.0 INTRODUCTION A multi-media consent order (Order No.

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AR226-3588 ANALYTICAL REPORT STLS E V E R N TRENT STL Denver 4955 Yarrow Street Arvada, CO 80002 Tel: 303 736 0 1 0 0 Fax: 303 431 7171 www.stl-inc.com - M J 90 E.