Construction Materials Engineering ami Testing g Environmental Engineering and Consulting Geotechnical Engineering m Analytical Sendees m T R A N S M IT T A L TO: Weston Solutions, Inc._________ __ DATE: March 23. 2005______ P.O.

TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE DOCUMENTS MULTIPLE CHEMICAL STUDIES STUDY TITLE LABORATORY OR DATE AUTHOR COMPLETED TYPE Hum an Sera/M edical Surveillance/Epidem iology M ortality Study of W orkers Em ployed at he 3M C ottage G rove Facility M ortality Study of W orkers Em ployed at the 3M D ecatur Facility Division of Environm ental and O ccupational Health, School of Public Health, U niversity of M innesota Division of Environm ental and O ccupational Health, School of Public Health, U niversity of M innesota Y ear 2000 Medical Surveillance Serum FC Levels Am ong Em ployee Participants of the Y ear 2000 D ecatur Fluorochem ical M edical S urveillance Program Serum FC Levels Am ong Em ployee Participants of the Y ear 2000 A ntw erp Fluorochem ical M edical S urveillance Program D escriptive Sum m ary of Serum Fluorochem ical Levels Am ong Building 236 W orkers An E pidem iologic A nalysis of Episodes of Care of 3M D ecatur Chem ical and Film Plant E m ployees, 1993-1998 04/26/01 04/26/2001 03/19/001 03/19/01 03/19/01 05/18/01 Final Report Final Report Report Report Final Report Final Report Id e n tifica tio n o f F lu o ro c h e m ic a ls in H um an T issu e 06/14/01 Final Report TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE DOCUMENTS MULTIPLE CHEMICAL STUDIES STUDY TITLE LABORATORY OR DATE AUTHOR COMPLETED TYPE Hum an Sera/M edical Surveillance/Epidem iology Serum Level Studies Id e n tifica tio n o f F lu o ro c h e m ic a ls in C h ild re n 's S era Id e n tifica tio n o f F lu o ro c h e m ic a ls in A m e ric a n Red C ro ss D onors Supplem ental notice for Sulfonate Based and C arboxylic-B ased Fluorochem icals, Reporting Results of Red Cross A dult and C hildren's Sera S tu d ie s 06/26/2001 06/26/2001 Final Report Final R eport 03/19/001 3m Letter to TSC A 8e Docket

3M Specially Materials 3M Center St.

Corporate Health Physics Corporate Industrial Hygiene & Ergonomics Corporate Occupational Medicine Corporate Toxicology 3M Medical Department 3M Center, Building 220-2E-02 PO Box 33220 St.

COVAH^ THE DEVELOPMENT SERVICES COMPANY Sponsor: 3M St.

A R 1 2 C - 0 1 ^Attachments to Letter to C.

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l&> 3M General Offices 3M Center St.

4R 2.2.G _ n o r 3M Lifetime Drinking Water Health Advisory for Perfluorooctanesulfonate Revision Date: April 19, 2002 Supercedes: July 7,1999 This document establishes a Lifetime Drinking Water Health Advisory (DWHA) o f 4 pg/L (ppb) for perfluorooctanesulfonate (PFOS).

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^ o a i'V v v AOO 2 0 I1DZ UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION III 1650 Arch Street Philadelphia, Pennsylvania 1 91 0 3-2(0 Robert A.

A d .16 / A 5 7 Ce: R.

\& 2> March 31, 2003 To: Mary F.

Afua- ir / / IN TH E C IR CU IT COURT OF WOOD COUNTY, W EST VIRGINIA JACK w.

/\RMG _ Ir/6 D u Po n t F u o ro p ro d u c ts Du Pont FI iioroproduct's Chestnut Run Phr/a P. ().