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3M General Offices = September 21, 2006 3M Center St.

p. 111 3 729 INTERIM REPORT # 23 - Analv03 of Sediment Samnles STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesuifonate (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 , DATRAEODIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFIt 792 STUDY DIRECTOR Jaisirnha Kesari P.E., DEE Weston Solutions, Inc. 140{?

Taft/ Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800 /Cincinnati, OH 45202-3957 /Tel : 513 .381 .2838 / Fax : 513 .381 .0205 /www .taftlaw .com Cincinnati / Clevelancl /Columbus / Dayton / Indianapolis / Nortnern Kentucky / Phoenix / Beijing RoBeRT A.

p. 1 Taft/ Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800/ Cincinnati, OH 45202-3957 / Tel : 513 .381 .2838 / Fax : 5 13 .381 .0205 /www .taftlaw .com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing ROBERT A.

M4* 32-pi-0 YO "McCrea, Deborah" <mccrea@taftlaw .com> 10/05/2009 01 :56 PM To NCIC OPPT@EPA cc "Bilott, Robert A."

: Fett pRanco 166 OHIO RIVER WATER SAMPLING .| RESULTS DUPONT WASHINGTON WORKS FACILITY AND THE LETART LANDFILL Date: November 2002 Project No.: DEWW7423 18983635.14000 18983632.00021 am CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 CONTAIN NO CBI 000028 `SRAT Ono Ruer Wate Samping Results Table of Contents TABLE OF CONTENTS J S---- m--_ 20 C-8 Analyses and Analytical REDOING .vrsnsnn 3 3.0 Ohio River Water C-8 Results Near The Washington Works Facility .......3 : 4.0 Ohio River Water C-8 Results Near the Letart Landfills] 5.0 OhioRiver Parameters...

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} TAFT, STETTINIUS & HOLLISTER LLP Com ay wl. 425 WALNUT STREET, SUITE 1800 CINCINNATaIxs, $aO13HmaIrOasi4e5n202-3957 ---- ed SZiEuFImia hi RSoCsionnrrgsAu.erBraonm AR226 _ 1188 October 25, 2002 TELECOPY AND REGULAR U.S.

AR RRC _ 1228 FINAL REPORT PROTOCOL 418-027 O`WRIATLH (TGHAEVRAEGPE)ROCDOUMCBTIINOEND/DREEVPEELAOTPEMDEDNOTSAELTTOOXXIICCIITTYYSSTCURDEYENOIFNTG7T5E99S.T7 SPONSOR'S STUDY NUMBER: T-7599 FINAL REPORT DATE: 25 MARCH 2003 PROTOCOL 418-027 - ORAL (GAVAGE) COMBINED REPEATED DOSE TOXICITY STUDYOF T 7599.7 WITH THE REPRODUCTION/DEVELOPMENTAL TOXICITY SCREENING TEST SPONSOR'S STUDY NUMBER: T-7599 SUBJECT TABLE OF CONTENTS L SUMMARY AND CONCLUSION Ll.

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BACK TO MAIN SOLUBILITY IN PURE WATER, METHA NOL, AND ACETONE - SHAKE FLASK METHOD TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA, PFOA ammonium salt, Ammonium perfluorooctanoate, FC-116, FC-126, FC-169, or FC-143.

BIOCONCENTRATION - REVISED TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample from 3M production lot number217.

Azas- 1750 Laboratory Rep-- o Revr isiton 1 Analytical Report of Data for PFOS Dietary LC50 Study in Northern Bobwhite (Sera and Liver) Laboratory Report No.

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