G LP10-01-02; Interim Report 17 Analysis of P FBS, P FH S , and P FO S in Groundwater 1st Quarter Sampling - 2011 GLP10-01-02: Interim Report 17 - Analysis of PFBS.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244963 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Sue Stefanosky Date: 03/23/2006 Signature Name: Richard C.

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Attachments to Letter to C.

BACK TO MAIN 3M Environmental Laboratory Report No.

BACK TO MAIN 3M Environmental Laboratory Report No.

BACK TO MAIN Executive Summary of Photolysis Studies 3M has completed a series of studies of the direct and indirect photolytic reactions of four materials; Table 1 lists the materials, their chemical abbreviations, and the relevant 3M report numbers.

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^ tfe lT M .a S L G -/\2 l SRPT T-76.I MIN 315/022356 vZ <"2Ovr?

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

EVe( riR E S E A R C H X / m Precise Research.

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.

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.

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.

AR226-2810 DuPont-12989 TRADE SECRET Study Title H-24750: Influence on Growth and Growth Rate of the Green Alga Selenastrum capricomutum A u th o rs: Barbra D.