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INTERIM REPORT #29 - Reanalvsis of Soil and Sludge 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 August 27, 2007 PERFORMING LABORATORY MPI Research, Inc. 3058 Research Drive State College, PA 16801 Phone:814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

STL Burlington Colchester, Vermont Sample Data Summary Package SDG: 117633 STLS E V E R N TRENT November 30, 2006 Mr.

ARa%-olHl 3M MEDICAL DEPARTMANT CORPORATE TOXICOLOGY To: John Butenhoff Andrew Seacat From: Marvin Case Date: 5 April 2000 Subject: Liver Slide Review I have completed my microscopic review of the liver sections of the 14-week sacrifice rats on the PFOS chronic study.

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Pathology and Toxicology Riker Laboratories, Inc.

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Centre Analytical Laboratories, Inc. 3048 Research Drive Phone: (814) 231-8032 State College, PA 16801 www.centrelab.com Fax: (814) 231-1253 or (814) 231-1580 Analytical Report Fluorochemical Characterization of Water and Sediment Samples Port St.

/ JaceAnalytical" -- Fi el dServices Division I 3M Prepared by: Pace Analytical Services, Inc.

AR226-1030A008 BACK TO MAIN Summary of Nave Rat/Rat Chow/Fish Meal Study Analyses Conducted by the 3M Environmental Lab (prepared 03/01/01) Nave Rats (Taken from summary report issued in 1998.)

BACK TO MAIN Larry R.

AR226-1030A031 BACK TO MAIN Analytical Data Summary PFOS, Primary Standard - Test Control Reference #TCR-00017-046 S o lu b ilit y in W a t e r , Na t u r a l S e a w a t e r , an A q u e o u s So lu tio n of 3.5% S o d iu m C h lo ride, and n-O ctano L with S ubsequent Calculation of the n-O c tan o l:Water Pa r t it io n Co e ff ic ie n t (KoW) of PFO S fo r each of t h e A q u e o u s Ma t r ic e s Author Mark E.

BACK TO MAIN - 1- PERFLUOROOCTANESULFONATE AND RELATED FLUOROCHEMICALS IN OYSTER, CRASSOSTREA VIRGINICA, FROM THE GULF OF MEXICO AND CHESAPEAKE BAY John P.