BACK TO MAIN CEntrE Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com (814)231-8032 Fax: (814)231-1253or (814)231-1580 Analytical Report Fluorochemical Characterization of Sediment, POTW Sludge, and Landfill Leachate Samples Port St.

TITLE: SAMPLE TRACKING OF WILDLIFE SAMPLES ANALYZED FOR CONCENTRATIONS OF PERFLUORINATED COMPOUNDS BY: John L.

Toxicological Summary PFOS Dietary Acute Mallard Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: p1o-tOacstsainucsmuslaflot,niCcASa#cid2,7915,-13,92323,3,4:4,5,5,6,61.7,888-heptadecafluoro-, Remarks: Tsthoeredtesutndseubrsatamnbcieenits caonwdhiittieonpsoawndderpu(ri3tMy wloats#o2r1i7g)i.nalTlyhedestaemrpmlienedwatso bteech9ni0qu4es%.

AR226-1838 DuPont/3M Meeting with EPA August 25, 2004 1:00 PM-4:00:PM Agenda B ackgroundiObje.ctives Received OPPT NCIC 2004 SEP-3 Data Review Linear/Branched Study Worker Exposure Data Biology Review Path Forward `cA~ ~J~'L ~/~/0y.

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26 November 2004 AR226-1889 To: Mary F.

Lo mp 265 998 AR226-1954 Bladder Cancer inPerfluorooctanesulfonyl Fluoride Manufacturing Workers Final Report 3 Iwa:l Bruce H.

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AR226-2096 r ^ ,Sample Date Range Concentration Range Aettoii Level Industrial Efygiene 1/106 laaise 100% Sample Dt Sample f Duration type Employee Name BTO: 09 TEFLON@ UW: 113 PIS- SHIFT MECHANIC (5BMO) 1/1QB6 22569 330 P 8136136 24210 360 P Pen.

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AR226-2160 Chris E Shoop_ 07/12/2001 01:17 PM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont, Debbie J Mulrdoney/AE/DuPont@DuPont David M Rural</AE/DuPont@DuPont, H David Ramsey/SBDuPontQDuPont, Stephen J Gissy/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont, John J Mentink/CL/DuPont@DuPont.

AR226-2162 ^y H David Ramsey 07/16/2001 11:02 AM To: cc: Subject: Dawn D Jackson/CL/DuPont@DuPont, George A Ainsley/SE/DuPont@DuPont FW: Call From Jesse Hanshaw Three key notes - there are some of us who prefer the State and I both conduct modeling so it is more independent - Forwarded by H David Kamsey/SE/DuPont on 07/16/2001 11:01 AM -- John J Mentink 07/10/2001 08:30:49 AM To: cc: Subject: H David Ramsey/AE/DuPont@DuPont FW: Call From Jesse Hanshaw This is the note originally issued by Chris Shoop.

AR226-2196 From: To: cc Subject: Fred M Lentz on 08/28/2001 07:54 AM Ta-Wei Fu/SE/DuPont@DuPont Stephen J Gissy/AE/DuPont@DuPont, Oscar T Garza/AE/DuPont@DuPont, Robbin Banerjee/AE/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, David M Rurak/AE/DuPont@DuPont, Raymond C Butterworth/CL/DuPont@DuPont, John R Flynn/AE/DuPont@DuPont, Amy L Brown/AE/DuPontQDuPont, Thomas W Mahlberg/SE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Roger J Zipfel/AE/DuPont@DuPont.

AR226-2216 Chris E Shoop 11^/2001^)3:08 PM To: ce: Subject Ralph M Aten/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPont@DuPont Particulate / C-8 Emissions from SemiwoiKs Ralph, In about August of this year 1 used information from the semiworks air permit application that you were preparing to provide data to the state on total C-8 emissions for the site.