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STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Mallard Serum and Mallard Liver for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 PERFORMING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

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TestResults flle:///C|/WINDOWS/TEMP/Polymers C-8 7-24-78 thru 1-3-98 23 pages.htm % I 1of43 AR226-2126 TestResulte sam ple Date Range C oncentration Range A ction Level Industrial Hygiene 7/24/78 100% 1/3/98 Sample D t Sam ple U D uration Type Employee Name Pars BTO : 18 TEFLON COPOLYMERS LOG: 001 FEP OVENS NORTH SIDE 12/18/79 47723 Z 1/15/80 47724 Z 1/22/80 47725 Z 8/8/80 47726 Z C hem ical Cone U nit Percent 0 8 0.0005 PPM 0.0% 0 8 0.0006 PPM 0.0% 0 8 0.0009 PPM 0.0% 0 8 0.0095 PPM 0.0% B TO : 18 TEFLON COPOLYMERS LOG : 002 FEP OVENS SOUTH SIDE 12/19/79 47601 z 1/25/80 47602 z 0 8 0.0001 PPM 0.0% 0 8 0.0031 PPM 0.0% AJP00694i BTO : 18 TEFLON COPOLYMERS LOC : 003 #1 OVEN COOLING TOWER 2/5/81 54696 z 2/11/81 54697 z 3/17/81 54698 z 5/23/81 54699 z 8/10/81 54700 z 8/11/81 54701 z . 0 8 0.0001 PPM 0.0% C-8 <0.0001 PPM 0.0% 0 8 0.0002 PPM 0.0% C-8 <0.0001 PPM 0.0% 0 8 0.0001 PPM 0.0% 0 8 <0.0001 PPM 0.0% 8/28/20014:49 PM E ID 140183 TestResults file:///C|/WINDOWSnTEMP/Polymers C-8 7-24-78 thru 1-3-98 23 pages.htm 8/12/81 64702 2 BTO: IO C : 18 TEFLON COPOLYMERS 004 #2 OVEN C 0 0 L IN 6 TOWER 2/5/81 61788 Z 2/11/81 61789 Z 3/17/81 61790 2 8/10/81 61791 2 8/11/81 61792 Z 8/12/81 61793 Z BTO: LOG: 18 TEFLON COPOLYMERS 183 FEP SHUTDOWN SAMPLES 5/12/81 61936 Z 5/12/81 81937 Z Tuesday, August 28,20013:24:20 PM C-8 <0.0001 PPM 0.0% C-8 0.0002 PPM 0.0% C-8 08001 PPM 0.0% C-8 0.0002 PPM 0,0% 0 8 0.0001 PPM 0.0% C-8 0.0001 PPM 0.0% C-8 <0.0001 PPM 0.0% C-8 <0.0001 PPM 0.0% C-8 <0.0001 PPM 0.0% Page 1 of 23 2 of43 AJP006942 Sample Dt Sam ple# D uration TYP Employee Name 5/12/81 61938 Z S/12/81 61939 2 5/12/81 61940 5/12/81 61341 5/12/81 61942 Z z z Pees Chem ical 08 08 08 08 . 08 Cone U nit Percent <0.0001 PPM <0.0001 PPM <0.0001 PPM <0.0001 PPM <0.0001 PPM 0.0% 0.0% 0.0% 0,0% 8/28/20014:49 PM E ID 140184 TesiResults file:///C|/WINDOWS/TEMP/Polymers C-8 7-24-78 thru 1-3-98 23 pages.htm 0.0% 5/13/81 61943 ) 5/13/81 61944 Z z C-8 <0.0001 PPM 0.0% C-8 <0.0001 PPM 0.0% 5/13/B1 61945 z C-8 <0.0001 PPM 0.0% 5/13/81 61946 z C-8 0.0001 PPM 0.0% 5/14/81 61947 z C-8 <0.0001 PPM 0.0% 5/14/81 61948 z C-8 <Q.0001 PPM 0.0% 5/14/81 61949 z 0 8 <0.0001 PPM 0.0% 5/14/81 61950 z O B <0.0001 PPM 0.0% 5/14/81 61951 z 0 8 <0.0001 PPM 0.0% 5/15/81 61952 2 0 8 <0.0001 PPM 0.0% 5/15/81 61953 Z 0 8 <0.0001 PPM 0.0% 5/15/81 61954 Z 0 8 <0.0001 PPM 0.0% 5/15/81 61955 Z 0 8 <0.0001 PPM 0.0% 5/15/81 61956 z 0 8 <0.0001 PPM 0.0% 5/18/81 61957 z 0 8 <0.0001 PPM 0 .0% 5/18/81 61958 z 0 8 <0.0001 PPM 0.0% 5/18/81 61959 z 0 8 <0.0001 PPM 0.0% 5/18/81 61960 z 0 8 <0.0001 PPM 0.0% 5/18/81 61961 z 0 8 <0.0001 PPM 0.0% 5/19/81 61962 Z ' 0 8 <0.0001 PPM 0.0% AJP006943 BTO: LOC: 18 184 TEFLON COPOLYMERS CLEAN-UP FOR SHUTDOWN 3 of 43 8/28/2001 4:49 PM E ID 140185 TestResults .j S/9/81 61900 S/9/B1 61901 5/9/B1 61902 5/10/81 61903 5/10/81 61904 5/10/81 61905 5/18/81 61906 file:///C|/WINDOWS/TEMP/Polymere C-8 7-24-78 thru 1-3-98 23 pages.hlm Z C-8 0.0002 PPM 0.0% Z C-8 0.0003 PPM 0.0% z C-8 0.0006 PPM 0.0% Z 0 8 0.0004 PPM 0.0% Z C-8 0.0004 PPM 0.0% Z 0 8 <0.0001 PPM 0.0% z C-8 <0.0001 PPM 0.0% BTO : 18 TEFLON COPOLYMERS LOG : 187 CONTRACTOR CLEANING AREAS 2/22/81 61816 z 3/12/81 61817 z Tuesday.

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AR226-2154 Catherine A Barton J 05/27/2001 03:24 PM , To: Debbie J Mulrooney/AE/DuPont DuPont, Robert F Pinchot/DEV/AH/DuPont@ DuPont cc: Catherine A Barton/AE/DuPont@ DuPont Subject: Recap of our meeting Ju st so w e're on the sam e page (and s o I can rem em ber what we sa id w e'd do a w eek from now), I've sum m arized som e notes from our meeting today, if any of this looks incorrect to either of you, please holler.

AR226-2155 C atherine A Barton j j 08/27/2001 03:24 PM ' To: Debbie J MuIrooney/AE/DuPont@ DuPont, Robert F Pinehot/DEV/AE/DuPont DuPont cc: Catherine A Bartan/AE/DuPorrt@ DuPont Subject: Recap of our meeting Just s o w e're on the sam e p age (and so l can rem em ber w hat w e sa id we'd do a w eek from now), I've sum m arized som e notes from our meeting today.

AR226-2231 December 10,2001 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr.

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AR226-2819 Route of Administration Oral Skin Absorption Inhalation Conclusion: ICC regulations?

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