AR226-2563 DuPont Fluoroproducts September 28, 2001 DuPont Fluafoproilucts Chestnut Run Plaza P.0.

AR226-2671 RECYCLED AR226-2671 SOIL COLUMN LEACHING STUDY FOR PFOA Date: August 2004 Project No.: 507423 18983990.04006 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 1.0 STUDY PURPOSE & PRINCIPLE A soil column leaching study for perfluorooctanoic acid (PFOA) was designed by DuPont to determine the vertical mobility or leaching o f air deposited ammonium perfluorooctanoate (APFO)/rainwater mobilized PFOA through clayey silt and silty clay soil.

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AR226-2833 9 w k M m ,' B I O -TEST 1810 FR O N T A G E RO AD NORTHBROOK, ILLINOIS 60062 9m .

FOR DU PONT USE ONLY cc : AR226-2908 .

FOR DU PONT USE ONLY AR226-2943 Ou Pont HLR 651-89 Study Title Inhalation Approximate Lethal Concentration and Pulmonary Pathology of Exposed Rats Author Rudolph Valentine Study Completed On November 22, 1989 Performing Laboratory E. !.

AR226-2975 TRACE SECRET Study Title STATIC, ACUTE, 48-HOUR EC50 OF H-19,519 TO Daphnia magria SafoBgauireroent Organisation for Economic Co-Operation and Development (OECD) Guideline for Testing Chemicals: 202 Author Keith B.

AR226-3043 Study Title Eye Irritation Test with H-2I987 in Rabbits Laboratory Project ID Haskel!

MU- & o 412 DuPont-8868 TRADE SECRET Study Title H-25171: Bacterial Reverse Mutation Test with an Independent Repeat Assay Authors Valentine O.

450 $#2&& - $ & & & Haskell Laboratory for Toxicology and Industrial Medicine March 13,2003 TO: MR] L Study in Rats Repeated-Dose Oral Toxicity Gavage Range Finder cc: G.

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AR226-3325 Conclusions From Previous Review Company Sanitized.

Op-) SfrOOO 0 9 J 000488 DATA SUMMARY Chemical: Perfluorooctanoic Acid Site: Washington Works, Parkersburg, West Virginia Date of Monitoring; 1979 Matrix: PFOA in Whole Blood Operation: Teflon Job Title Number Sampled Entire Cohort Males Females Operators Males Females Mechanics Males Females Laboratorians Males Females Supervision Males Females 72 72 0 61 61 0 5 5 0 2 2 0 4 4 0 Minimum Concentration (ppm) 0.1 0.1 - 0.1 0.1 - 0.6 0.6 - 0.31 0.31 - 0.53 0.53 - Mean (ppm) 4.99 4.99 - 5.74 5.74 - 0.71 0.71 - 0.52 0.52 - 1.14 1.14 - Median (ppm) 2.8 2.8 . 3.9 3.9 - 0.65 0.65 - 0.52 0.52 - 0.72 0.72 .- Maximum Concentration (ppm) 28.4 28.4 - 28.4 28.4 - 0.9 0.9 - 0.72 0.72 - 2.6 2.6 - Standard j Deviation i 6.24 6.24 - 6.48 6.48 - 0.13 0.13 - 0.29 0.29 - 0.99 0.99 - Comments: Samples analyzed by National Medical Services Data extracted from WW site database by site industrial hygienist Tony Playtis Descriptive statistics calculated using Microsoft Excel Operation indicates work assignment of person at time of sample and does not reflect past work history Prepared by: Barbara J.

POPs task force Pa|*e 1 of 1 Convention Home Chairs' reports M eetings Proposals for new POPs WGSR Convention homepage L in k s : World Meteorological Organization European Environment Agency EANET NARSTO IGAC UNEP POPs Convention on Long-range Transboundary Air Pollution Task Force on Persistent Organic Pollutants Follow ing the entry into force o f the 1998 Protocol on P ersisten t O rg a n ic Pollutants (PO Ps) in 2003, the Executive Body for the Convention established the Task Force on POPs at its twenty session in Decem ber 2003.

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