3M REPORT: BIOACCUMUIATION STUDIES -O200- b i t March 8, 1993 UA6-0370 Ca> -p .

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r t R S . 6 _ /ms Telomer Research Program Ciariant Report Title: In Vivo Rat Micronucleus Assay Author(s): Gregory L.

M *6 - C-o-N-F-I-D-E-N-T-I-A-L Location SUMMARY ORGANIC FLUORIDES IN BLOOD SAMPLES Job Group Number Sampled Range ppm Average ppm Washington Works Process Operators - TFE Process Operators - PEP Service Operators Mechanics Semi Works Tjaboratorians Monomer Operators* (*no service in polymer) 26 % 13 18 5 8 7 0.2-21.7 0.9-5.0 0.5-5.0 0.55-0.83 0.2-1.5 0.1-0.5 5.79 2.83 2.14 0.66 0.56 4 0.35 Wilmington Background Group Chambers Works Chambers Works -- PPD CD&P Operators (Fluoro Products) "Kalrez" Operators Experimental Sta.

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ENCLOSURE 4 Description of the 3M Decatur Inactive Landfill Containment Structure At the 3M Decatur site, a RCRA interim remedial measures (IRM) program is currently underway to construct a containment structure for an inactive landfill.

Fraunhofer ITEM Final Report 01 G 00 0 02 [Appendix H // EXYGEN Data] 28 Day Repeated Dermal Contact Study of 3M Test Articles in Sprague-Dawley Rats Page 1 of 13 Appendix H: PFOS, PFHS and M570 Residues in Rat Blood Serum (EXYGEN Data) Fraunhofer ITEM Final Report 01 G 00 0 02 [Appendix H // EXYGEN Data] 28 Day Repeated Dermal Contact Study of 3M Test Articles in Sprague-Dawley Rats Page 2 of 13 Sex // Gr.

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AM%-0S3& TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) TEST SUBSTANCE Identity: Perfluorooctylsulfonate, didecyldimethylammonium salt; may also be referred to as Fluoroalkyl ammonium derivative. [1Decaminium, N-decyl-N,N-dimethyl-, salt with 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1 octanesulfonic acid (1:1), CAS # 251099-16-8] Remarks: The 3M production lot number was Lot 1.

M&S.6 _ 0637 If Charles Auer ' 05/16/2000 03:42 PM To: waweppner@mmm.com, dchakes1@mmm.com cc: Oscar Hernandez/DC/USEPA/US@EPA, Jennifer Seed/DC/USEPA/US, Barbara Leczynski/DC/USEPA/US@EPA, Karen Lannon/DC/USEPA/US@EPA Subject: PFOS items Following up on my phone call with Bill Weppner on May 15, I want to confirm a few points: 3M has arranged a discussion with the Commission of the EU on May 24 in Brussels to discuss PFOS.

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AR226-2289 Robbin B anerjee 09/04/02 02:34 PM To: Oscar T Garza/AE/DuPont@ DuPont, Ta-W ei Fu/SE/DuPont@ DuPont cc: Stephen J Gissy/AE/DuPont@ DuPont, Kart G Kronberg/AE/DuPont@ DuPont, Fred M Lentz/SE/DuPont@ DuPont, Chris E Shoop/AE/DuPont@ DuPont Subject: CB report N O T Q U ITE SURE W H A T T H IS NUM BER M EANS Y E T ....F E N C E L IN E O R PO PULATIO N R EC EPTO R .....JU S T FO R IN FO ..... ----------------------------- Forwarded by Robbin Banerjee/AE/DuPont on 09/04/2002 05:33 PM -- ---------------------------------- From: Dawn D Jackson on 09/04/2002 04:48 PM To: Martha L Rees/AE/DuPont@ DuPont, John R Bowm an/AE/DuPont@ DuPont, David M Rurak/AE/DuPont@ DuPont, Diane R Shomper/AE/DuPont@ DuPont, Paul J Bosseri/AE/DuPont@ DuPont, H David Ram sey/SE/DuPont@ DuPont, George A Ainsley/SE/DuPont@ DuPont, Dawn D Jackson/CUDuPont@ DuPont, George H Senkler Jr/AE/DuPont@ DuPont, Robbin BanerJee/AE/DuPont@ DuPont, Kelli H Kukura/AE/DuPont@ DuPont, M.

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