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AR226-2314 ^ Charles J Zarzecki ' 03/17/200311:09 AM To: Catherine A Barton/AE/DuPont cc: Subject A ER M O D Met Data Hope you're having a wonderful conference call.

\ AR226-2409 INTEROFFICE MEMORANDUM Dates From; Dept : Tel No 29-May~i99Q 12:23pm Peter D.

RECYCLEO ro AR226-2690 AR226-2690 Executive Summary - Biodegradation Screening Studies of 8-2 Telomer B Alcohol - The two studies described in the attached reports (EMSER 13-03/4842 and EMSER 15-03/4842) represent the screening phase for the biodegradability assessment of 8-2 Telomer B Alcohol (CAS# 678-39-7).

ANALYTICAL REPORT Centre Analytical Laboratories, Inc. 3048 Research Drive, State College PA 16801 814-231-8032 FAX 814-231-1253 Analytical Results W2336 Columbus, GA 3M Sample Identification MC-501H MC-503H MC-506H NA MC-507H NA MC-508H MC-584H NA Sample Description Site 1 P/N Surface Water Site 1 P/N Surface Water Duplicate Site 2 P/N Surface Water Site 2 P/N Surface Water Duplicate Site 3 P/N Surface Water Site 3 P/N Surface Water Duplicate Field Blank-P/N Empty Quiet Surface Water Quiet Surface Water Duplicate PFOS (ng/L) 63.8 59.9 76.6 83.3 55.4 55.4 <25 <25 < 25 J Compound is present, but below the reporting limit of 25 ng/L.

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ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES N-MeFOSE ALCOHOL S TU D Y TITLE LABORATORY OR AUTHOR DATE COMPLETED TYPE Environmental Fate and Transport P hotolysis Study on FM-3925 (direct and indirect) 3M Environm ental Lab P h o to lysis o f F M 3 9 2 5 in A q u e o u s s o lu tio n s (d ire ct) 3M Environm ental Lab D eterm ination of the Partition coefficient (N -O ctanol/W ater) of T-5874 by High Perform ance Liquid C hrom atography (HPLC) H ydrolysis R eactions of 2-(N -M ethylperfluooctanesulfonam ido)-E thyl alcohol (N-M eFO SE Alcohol) Notox B.V., 'sHertogenbosch, The 3M Environm ental Lab 08/06/80 11/07/80 06/07/94 03/30/01 Robust summary, Technical Report Robust summary, Technical Report R obust sum m ary, Final Report Robust summary, Technical Report

M I S lG - I 7 0 ^ n Analytical Report : f~ FKiorochemical Characterization of Water Samples Daikin America, Inc. n Exygen Research Laboratory Report No.

Wildlife International, Ltd. - 1- Project Number 454A -109 PFOS: A SEMI-STATIC LIFE-CYCLE TOXICITY TEST WITH THE CLADOCERAN (.Daphnia magna) ADDENDUM WILDLIFE INTERNATIONAL, LTD.

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A # 22 - (S 7 / Analytical Report \ Occupational and Environmental H ealth Analysis o f ^frfiuorooctanolo Add (PFOA) In Human Serum Samples \ Exygen Report No.

AR226-2315 Charles J Zarzecki 03/19/200311:31 AM To: Catherine A Barton/AE/DuPont cc: Subject VVV C8 Modeling Cathie, I took a look at the location of the maximum predictions in the W V C8 modeling summary.

RECYCLED CO AR226-2625 mm AR226-2625 DuPont Engineering Barley Mill Plaza - Bldg. 27 4417 Lancaster Pike Wilmington, DE 19805 October 19,2004 Mr.