AR226-2579 )Andrew's Hartten :-~----^JMI 0212712.QQ2'W:W W ^ To: co: Subject: M.

AR226-2583 Document 12 of 25 ASH018251 EID521411 I ^ I I I C-8 PLUME IDENTIFICAT10N/GROUNDWATER I ASSESSMENT WORK PLAN I DUPONT WASHINGTON WORKS FACILITY AND LOCAL, LETART AND I DRY RUN LANDFILLS I I I Dates May 2002 I Project No.; D6WW7423 I ^ I CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond I Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 I I I ASH018252 EID521412 I C-a Plums IdenflfledUon/GioundwatBr Assessment Wotk Plan __Introduction y TABLE OF CONTENTS 1.0 Introduction.......................................................................................................... 2 1.1 Document Organization..--......,........--........-,......--... .....,,..............,,..,,..-- ...,...3 1 2 . 12.0 Washingtoii Works Facility.....................................................................,.......,.,.,.4 Key Findings..............................................................................................4 2.2 Data Gaps,............................................................................................... ,.5 2.3 Summary--Recommended Activities to Fill Data Gaps.................................. 5 2.4 Detailed Justification..............................................................................6 1 1| H ^ 3 4 . . 3.0 Local LandfilL..................,.,..................,..,......................................-..........,.............8 KayFhldings.......................,,...................,...................,.................,..................,8 3.2 Summary--Recommended Activities to Fill Local Landfill Data Gaps ...........9 3.3 Detailed Justification................................................................................ 10 14.0 Letart Landfill...................................................................................................... 12 4.1 Key Findings--Letart Landfill.......................................................,...,,...,...12 Data Gaps for the Letart Landfill.........,................-...................,,.............,.....13 4.3 Summary--Recommended Activities to Fill Letart Landfill Data Gaps,.,......13 4.4 Detailed Justification .......,,,,.,,....................................................................14 25.0 Dry Run LandfiU...........................,.....,.....................................................-,.,...........16 5.1 Key Findings--Dry Run Landfill............................................................ 16 5.2 Summary--Data Gaps for the Dry Run Landfill............,,.,,,...............,.,,........]?

2195 Front Street Loaan,OH43138 ONBER& State of Ohio Envirnitirtcntal PretctHun Agency Southeast District Office TELE: (740) 385-aSQI PAX; (740) 385.64BO AR226-2608 Bob Taft, Bovsrror Christopher Jones, DIrBctor July 8,2002 Mr.

AR226-2753 Copies Co Material Tested Uccanoic ac id, pentadecafluoro- , ammonium saic* E.

^(* AR226-2762 FOR DU FONT DSE ONLY Copies to: E.

Study Sponsor: Issue Date: Document Reference No.: ATOCHEM 2-NOV-87 98797 AR226-2933 Acute Toxicity to Daphnia Magna Author(s): A.M.

FOR DU PONT USE ONLY AR226-2954 Du Pont HLO 19-91 Study Title Skin Sensi'tizati'on Test w1t)fB|in Guinea Pigs Study Coinpleted On March 25. 1991 Contracting Laboratory Pharmakon Research International, Inc.

CONFIDENTIAL AR226-3132 -J^/SJ 3^ DPT 443/984760 TOXICTTY STUDY BY ORAL ADMINISTRATION TO CD RATS FOR 4 WEEKS Sponsor DuPont Specialty Chemicals; Jackson Laboratory, Chambers Works, Deepwater, NJ 08023, U.S.A.

ARag6_ 343 | { | { 418 i | | || [5rarGov-- age Sty-- n Ra ih OneGerm Reprodstion Evations HAAG - 3236 RDeuvriosendsP3a8g6e "TRADE SECRET Study Title H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats `with One-Generation Reproduction Evaluations Revision No. 1 Volume 3 of 5 "TEST GUIDELINES: U.S.

ARA%6 _ 3282 464 AR2AG - BREA _ -- --------_ Duro-- n 11414 `TRADE SECRET Study Title H-25134: Four-Week Inhalation Toxicity Study in Male Rats TEST GUIDELINES: OECD Guideline for the Testing of Chemicals Section 4: Health Effects, Number 412 (1981) AUTHOR: Linda A.

ARaz6-- 3303 ~D [Swd| yNmoai0.1] ARAE - 3363 Study Report Volume 31 a i (fon-GLP study) October 16, 2003 Chemicals Evaluation and Research Institute, Japan Kurume Laboratory `Company Sanftized.

- r bE I \8S,FroAEn RliIss 1 " Attachment 2 Aezzg-/776- [ [ r I~ 1 | vc --_ i |- - | [ I te || Air Sampling Fluorochemical Report DuPont Washington Works -- Air Sampling Program Round 8 Exygen Research Report No.

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6-month toxicitsytudy withPFOS Monkeys Date: T-6295.7 Covance 6329-223 3/16/99 inCynomolgus Urobilinogen(UB) AnalysisResultsfrom Dr Joseph P.McConnell.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:N-methylperfluorooctanseulfonamidoethanolm;ay also be referredtoas N-MEFOSE Alcohol,FC-790, or FM-3925.