Il Taft/ Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1 8 0 0 /Cincinnati, OH 4 5 2 0 2 -3 9 5 7 /Tel: 51 3.38 1.28 38/Fax: 513.381.0205 / www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing R obert A.

INTERIM REPORT #22 - Analysis of Soil 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 October 2,2006 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.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244549 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: 03/09/2006 Signature Name: Richard C.

6 -- D&S5 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

b4> NOTE TO FILE - OPPTS 50639 October 23, 2000 FROM: Karen Lannon SUBJECT: Revised PFOS Hazard Assessment M S A 6 _ 03lf-& Attached is a revised PFOS Hazard Assessment.

3 Analytical Report Determination of PFC Concentrations in Fish Collected from the Tennessee River in the Fall of 2012 Study Title Analytical Study ISO12-01-01-04: Tennessee River Fish Sample Analysis, October 2012 Project Coordinator(s) Jai Kesari, P.E., DEE and Charles Young Weston Solutions, Inc. 1400 Weston Way Westchester, MA 19380 Principal Analytical Investigator Cleston C.

^Precise Research.

Covance Studies The attached report summarizes the results from the assessment of mitochondrial bioenergetics of hepatic mitochondria isolated from rats treated for 3 weeks with one of 4 doses (plus control) of dietary FC10.

AR226-0(61 DT15 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY - ST-43: Standard Procedure fo r Liver Subcelular Fractionation - Study Objective: Perfluorochemical compounds such as perfluorooctane sulfonate (PFOS) have been linked with reduction in serum cholesterol levels and liver has been identified as the primary target site.

Pathology Review of Reported Tumorigenesis in a Two Year Study of FM-3924 in Rats November 25,1998 BY Pathology Associates International 6217 Centre Park Drive West Chester, Ohio 45069 Telephone (513) 779-9600 Fax (513) 779-9603 003099 Pathology Review of Tumors Reported in Rats Given FM-3924 Introduction: This report presents an independent assessment of tumorigenesis data obtained from a study to determine the chronic toxicity and carcinogenic potential of the fluorochemical FM-3924 in rats.

HAZLETON LABORATORIES AMERICA INC. 9 2 0 0 LEESBURG Tu ONPIKE VIENNA VIRGINIA 2 2 1BO U S A RAT TERATOLOGY STUDY T-3352 FINAL REPORT Submitted to 3M Comoanv St.

BACK TO MAIN SANITIZED REPORT EXPLORATORY 28-DAY ORAL TOXICITY STUDY WITH TELOMER ALCOHOL, TELOMER ACRYLATE.

BACK TO MAIN BACK TO MAIN I.

3M Specialty Materials 3M Center St.

'aceAnalytical F ie ld Services Division 3 Prepared by: Pace Analytical Services, Inc.