HECYCLEO 05 AR226-2656 AR226-2656 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed for the DuPont Washington Works facility to demonstrate that the emission limits included in the form R13 permits (815E, 1353B, 1953B, and 2365C) comply with the C-8 assessment o f toxicity (CAT) recommended airborne screening level of 1.0 ug/m3 at the property line fence.

RECYCLED AR226-2670 DuPont Legal Andrea V Malinowski * Corporate Counsel DuPont Legal D-8078 E.

FOR DU PONT USE ONLY AR226-2792 Subchronic Inhalation Toxicity of iln Rats Haskell Laboratory Report No. 273-85 MR No E.

FOR DU PONT USE ONLY AR226-2937 Du Pont HLR 784-88 .

V- P' S tudy Completed On May 20, 1991 I 1, Performing laboratory Haskell E.

TRADESECRET AR226-3083 DuPont H L-1997-01226 Study Title H-22994: Eye Irritation Test in Rabbits Laboratory Project ID: HL-1997-01226 Author: Tracy A.

TRADE SECRET AR226-3093 DuPont HL-1998-01316 Study Title H-23005: Bacterial Reverse Mutation Test L a b o r a t o r y Project ID: HL-1998-01316 Author: N.

AR226-3145 DuPont-4002 HASKELALNLDAIBNODRUASTTORRIAYLFMOERDTICOIXNIECOLOGY H-24390: STATIC, ATOCUDTaEph4n8ia-HmOaUgnRaSCREENING TEST PURPOSE: This is a rangefmding study designed to provide an estimate of aquatic toxicity using fixed test concentrations and data measurements at predetermined intervals.

H-24516: Subchromc I'oxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations AR226-3201 DuPont-5368 TRADE SECRET Study Title H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations Volume 5 o f 5 Laboratory Project ID: DuPont-5386 Test Guidelines: U.S.

437 TRADE SECRET 4*SU_ 3LT DuPont- 11269 Study Title H-25357: Oral Approximate Lethal Dose (ALD) in Rats Laboratory Project ID: DuPont-11269 A u t h o r : Carol Finlay, B.A.

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September 29,2006 Page 3 ATTACHMENT 2 Tables and excerpts from the draft protocols that contain raw data C-8 blood levels.

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INTERIM REPORT # 2-AnaIvsis of Surface Water Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE March 22, 2005 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

AR ff.s.6_ OGSG POSF Ongoing- ( 000279 06/22/00 T-7098.1 POSFPK PHARMACOKINETIC STUDY OF POSF IN RATS - STUDY OUTLINE Study Objective: The objective o f this study is to assess the potential for oral absorption, urinary and fecal clearance and biological persistence o f perfluorooctane sulfonyl fluoride (POSF) in male Sprague Dawley rats after a single oral dose.