3M ENVIRONMENTAL LABORATORY REPORT NO.

3 GLP10-01-02 Interim Report 05: Analysis for PFOS, PFHS and PFBS in Avenue A Soils and Sediments Collected June/Julv 2010 Study Title 3M Environmental Laboratory Analytical Protocol GLP-10-01-02: Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 Principle Analytical Investigator Cleston C.

GLP10-01-02; Interim Report 30 - Analysis of PFBS, PFHS, and PFOS in Groundwater Samples Collected at Off-Site Wells on Bert Jeffries Property in Decatur, AL in April 2012 Study Title Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 P h o n e :610-701-3761 Author Susan W olf 3M Environmental Laboratory Interim Report Completion Date Date of signing Performing Laboratory 3M Environmental Health and Safety Operations Environmental Laboratory 3M Center, Bldg 260-05-N-17 St.

3M ENVIRONMENTAL LABORATORY REPORT NO.

INTERIM REPORT # 12 - Analysis of Vegetation 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 November 6,2006 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.

INTERIM REPORT # 9-Analvsis of Ground Water Samles 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 January 9,2007 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.

SEVERN T RENT STL STL Chicago 2 41/ Bond Street University Park, IL 6046b Tel: 708 534 5200 Fax; 708 534 5211 www.si/-jnc.com s iv e r n it r e M ANALYTICAL ::JOB :N C M B E K : i-2;33 6 2 9 Prepar ed For : ' /Weston o 1u tion s , Inc . 1,400 West o n Way Building " 5-2... ..

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244436 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 03/06/2006 Signature Name: Richard C.

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.

A RllG-o^ DETERMINATION OF THE VAPOR PRESSURE OF PFOS USING THE SPINNING ROTOR GAUGE METHOD WILDLIFE INTERNATIONAL LTD.

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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