Have completed: - 1-mile water use survey & sampling (all sites) - 2-mile near Main Plant/Local LF - Ohio River PWS sampling (10 miles up/50 miles down)/1-4 events per location (15 sites) - Site monthly gw/sw sampling (4 consec. months) - Ohio River Sampling - Reports (Historical, Monthly, Summary) - Site(s) Investigation, 26 wells, ongoing - GW Model, expanded domain, ongoing EID781156 ASH027877 EID781157 EID781157 MMCO-Emissions Required: Cap air emissions at year 2000 levels Voluntary Efforts in Teflon: --Teflon Wastewater/Oberlin Filter (90% Reduction) - Air: New scrubbers installed in April, hope to g achieve 85% reduction oa a*4i EID781158 MMCO-Groundwater Modeling Project Little Hocking WA 12/2001 results provided near -term driver Objective: Is groundwater transport off C-8 possible from DuPont site to LHWA well field GIST Oversight Use team offregulatory technical experts (I.e., USGS, WVDEP, EPA, COE) throughout process Today's Objective: - Mid-term review offprogress to-date, including model set-up, conceptual model development, calibration runs, to obtain | early feedback and answer questions aoto 4 00 <40 EID781159 SH027860 EID781160 IID 78H 60

Dupont de Nemours & Co., Inc Dear Mr.

AR226-3371 DuPont Central Research and Development April 11, 1994 3M Center Bldg?

Part of PlasticsEurope, the group's members are 3M, AGC, Arkema, Chemours, Daikin Chemicals, DuPont, Gujarat Fluorochemicals, Honeywell, W.

DuPont Modeling Methodology and Results DRAFT Shimizu Site June 2003 AR226- 06/02/03 IO GJ GJ About the Model Industrial Source Complex Short Term 3 (ISCST3) Sold/used globally, Including in Japan http://www.phoenix-r.co.jp/products/products.htm Input Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour) Local meteorological data (Shlzouka 1997, 98, 99) Output Ambient air concentrations in ug/m3 Max values and locations outside the property line CAB000376 Prevailing wind -- *> R HD H CAB0OO377 Ambient annual ground level concentration in ug/m3 Model Calculations i Ambient air concentrations based onGaussian Equation Concentration a function of a vertical term and a i dispersion term i Vertical term based on stack height, receptor elevation, plume rise, mixing i B H O H Dispersion parameters describe distribution of pollutant in lateral and vertical CAB000378 m Ha<H1 ir CABO0037 9 Shimizu Modeling Inputs Stack Parameters Source ID 1 2 3 4 ssmPmPccoraarresuupp-tbbs))-scbbcreeurrrub((bbccbeaaerllDeereeeddxsxi""tciAAtfroiCfCportrifSSoifninccnerreuupbbpobboweewdrrd''eoeornnr DBCScrubber MP-2scrubber location DPlant DPlant pcolaEpnoPMtlyflaPomn-rp2teoP:rwbcFtuoydAippeldaoerinnlymdgm:iFceErroP- OOOOppppeeeepppprerrreeeOdddrdrrraaaappppaaaaptttteeeeyyyyeeeee,,rr,,rrssssryayy2y2112222eeete0788i44o44aaaa0000nrrrrhhhhddddsooooaaaauuuuyyyyrrrrssssssssj Height, m - Diameter, m 8 0.68(1) 15 0.6 18,2 0.6 16.1 10.6 assumed Flowrate m3/hr 2400 9600 1620 7500 r~ N> (1)GivenInemailof4/17/03from Hidetaka Hlromatsu: 600sommsquaredlametTer.

W e are especially grateful for the latter, so far only DuPont has been saying there are safe levels, we need to have an independent agency agree, we are hoping it would actuafy agree to higher levels than we have been saying, if for no other reason than we are exceeding the levels we say we set a s our own guideline, mostly because no one bothered to do the air modeling until now, and our water teat has completely inadequate (until next weak).

AR226-2336 DuPont Modeling Methodology and Result DRAFT Shimizu Site June 2003 About the Model Industrial Source Complex Short Term 3 (ISC Sold/used globally, including in Japan http://www.phoenix-r.co.jp/products/products.htm Input Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour) Local meteorological data (Shizouka 1997, 98, 99 Output Ambient air concentrations in ug/m3 Max values and locations outside the property lin 'asr Prevailing wind Facility Ambien ground concent ug/ Model Calculations Ambient air concentrations based on Gaussia Equation Concentration a function of a vertical term a dispersion term Vertical term based on stack height, recepto elevation, plume rise, mixing Dispersion parameters describe distribution o pollutant in lateral and vertical '^f^^S^^?

Attachment | Co Pagel AR226-1775 rath AIR DATA DUPONT WASHINGTON WORKS SITE "efTfhoirstss,ubbmoitthtaolfswuhmimcahriarzeesasasvoaciilaatbeldewiintfhorPmFatOiAonifnraoimr atthethfeoDlluoPwoinntg tWwaoshdiantgatcoonllWecotrikons site: 1.

BURGER ----------------- ,FPD BLOOD SAMPLING PROGRAM -C -8 In our communication of March 1, 1982 we s ta te d th a t n e ith e r DuPont nor 3M has detected, any adverse health e f f e c t s a t tr ib u t e d t o C -8 a t th e le v e ls measured in the blood o f employees.

I f DuPont Telom er Inform ation Meeting, M ay 2,2003 NAME O RGANIZATIO N A * . /$/& C o n t a in s N o C B I TELEPHONE # E-M AIL ADDRESS in r o r Kobe-W ^ m jlU U ktTc> (+t& ^~Q f< z x c f - ^ w _t I~ 3> U> uNul l/\fw<A- P z-i/ib g rth ;- h fL iA L& iu k.^ VO - V\l /| / Ia ' ,uT X } O** m ^ a A .

August 4, 2005 n: h' DuPont Haskell laboratory for Health and Environmental Sciences Elkton Road, P.0.

Petit English Translation of Report Summary for DuPont Chemical Solutions Enterprise 27-Jan-OS ^^^'^.Doesn, TRANSLATION ATOCHEM Levallois Applications Center Analysis - Environmental Services Eco-toxicology Laboratory TEST REPORT DETERMINATION OF AN INHIBITING EFFECT ON BACTERIAL PSEUDOMONAS PUTIDA CELL GROWTH according to proposed standard ISO TC147/SC5/WG1/N111 Substance studied: Name: Customer reference : Internal sample reference : Person responsible for test: Person carrying out test: Date test started: Date report written: J.

The FEP sump material contains 200-400 aptpmthCe-8L-etTarxts amou of C-B makes the waste material hazardous based on DuPont classifications ( C-8 is not a RCRA hazardous waste).

W e are especially grateful for the latter, so far only DuPont has been saying there are safe levels, we need to have an independent agency agree, we are hoping it would actuafy agree to higher levels than we have been saying, if for no other reason than we are exceeding the levels we say we set a s our own guideline, mostly because no one bothered to do the air modeling until now, and our water teat has completely inadequate (until next weak).

RAR _ SUE 400 AR226. 3218 -_-- wDuPeonmt.9w05w7 TRADE SECRET Study Title H-25183: Static, Acute, 96p-rHoomuerlSacsreening Test to Pimephales Laboratory Project ID: DuPont-9057 AUTHOR: Alan Samel, M.S, STUDY COMPLETED ON: January 16, 2002 -- PERFORMING LABORATORY: EH.aLskedlulPLoanbtodreatNoerymofuorrsHeaanldthCaonmdpEannvyironmental Sciences NElekwtaornk,RoDaedl,awP.aOr.e B1o9x71540-0050 PS `CompanySanitized.