3M Specialty Materials 3M Center St.

31 October 2003 To: Mary F.

3M ENVIRONMENTAL LABORATORY REPORT NO.

INTERIM REPORT # 10 - Analysis of Fish and Clam Samples STUDY TITLE Analysis of Perflnorobutanesulfonata (PFBS), Perfluorohexanesulfonate (PFHS), and Perflnorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE May 09, 2006 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 Phone:814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

PFOA Attachments to Letter to C.

M & t-fW S Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Mallard Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoropotassium salt, CAS# 2795-39-3 Test Remarks: The test substance is a white powder (3M Lot #217).

&HH Attli-USri I '...

AR226-1891 Final Report Study Title (14C )-8-2 T e lo m e r B A lcohol: Adsorption/D esorption using a Batch Equilibrium M ethod Data Requirem ent Protocol designed to m eet the known requirem ents of OECD Guideline 106 (January 2000) A u th o r S Swales Sponsor Test Facility Katie Smythe, A dm inistrator Telom er Research Program The Rand Corporation 1200 South Hayes Street Arlington, V A 22202 USA C ovance Laboratories Ltd O tley Road, Harrogate North Yorkshire HG3 1PY ENGLAND R E C E IV E D O P P T NCIC 2004 D EC 22 A M 1 1 :20 Covance Study Num ber 2304/001 Covance Report Number 2304/001-D2149 Report Issued 16 July 2004 Page Number 1 of 89 Covance Study Number 2304/001 Final Report STATEMENT OF NO DATA CONFIDENTIALITY CLAIMS (14C)-8-2 Telomer B Alcohol: Adsorption/Desorption using a Batch Equilibrium Method No claim of confidentiality is made for any information contained in this study on the basis of its falling within the scope of FIFRA Sections 10(d)(1)(A), (B) or (C).

N E W S Minnesota Pollution Control Agency www.pca.state.mn.us Toll-free and TDD 1 (800) 657-3864 Saint Paul Brainerd Detroit Lakes Duluth Mankato Marshall Rochester Willmar FOR RELEASE: May 9, 2005 MPCA Media Contact: Michael Rafferty, (651) 297-8294 MDH Media Contact: Tannie Eshenaur, (651) 215-0916 MPCA Technical Contact: Ingrid Verhagen, (651) 296-7266 MDH Technical Contact: Jim Kelly, (651) 215-0913 GROUND-WATER INVESTIGATION CONTINUES TO FIND PFCS AT LOW LEVELS IN LAKE ELMO PRIVATE WELLS AS FOUR TEST ABOVE HEALTH-BASED CRITERIA St.

AR226-2115 r Test Results Industrial Hygiene Sam ple Date R ange 1/1/88 12/31/88 C oncentration R ange Action Level 100% Sam ple D t S am ple# D uration T ype Em ployee Name BTO: 08 TEFLON LOG: 0 ACIDNEUTPIT-GENERAL 5/4/88 40895 1440 Z Pere Chem ical C one Unit Percent C-8/FC-143 0 .0 3 MPB 5.4% BTO : 08 TEFLON LOC : 109 P /S - DAY POLY/MON ESI WIECH (COMB W/TMO10S) 7/27/88 14397 420 P none C-8/FC-143 0.03 MPB 5.4% BTO: 08 TEFLON LOG: 701 FINE POWDER DRYER-EAST SIDE #2 2/21/88 46265 Oqfvlwg Z 4/16/88 46286 6/14/88 46287 393 Z 450 2 9/5/88 46289 490 Z 9/25/88 46238 390 Z 11/13/38 46290 300 Z C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 BTO: 08 LOC: 702 TEFLON FINE POWDER DRYER CONTROL ROOM (ALSO SEE TTF031 2/10/88 36612 6/24/88 36615 6/25/88 36614 330 Z 420 z 420 z C-8/FC-143 C-8/FC-143 C-8/FC-143 8/20/88 36616 10/14/88 36617 330 z 330 z C-8/FC-143 C-8/FC-143 BTO; 08 TEFLON LOC: 703 FINE POWDER PACKOUT ROOM 1/17/88 34561 450 z 1/18/88 34560 360 z 2/29/88 34563 360 z 4/5/88 40678 420 z 4/26/88 34664 450 z 6/21/68 40903 381 z 6/23/88 40901 420 z 6/24/88 40902 420 z Tuesday, January 16,2001 9:41:56AM C-8/FC-143 C-8/FC-143 C S /F C -1 4 3 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 0.183 MPB <0.005 MPB 0.107 MPB 0.11 MPB 0 5 3 MPB 0.32 MPB 32.7% 0.9% 19.1% 19.6% 94.6% 57.1% 0.072 MPB <0.03 MPB <0.03 MPB 0.04 MPB <0.03 MPB 12.9% 5.4% 5.4% 7.1% 5.4% 0.065 MPB 0.1 MPB 0.068 MPB 0.034 MPB 0.006 MPB <0.03 MPB <0.03 MPB <0.03 MPB 11.6% 17.9% 12.1% 6.1% 1.1% 5.4% 5.4% 5.4% Page 1of 12 AJP003893 EJD113027 Sam ple Dt Sam ple# D uration T ype Em ployee Name 8/23/88 41082 9/5/88 41097 10/1/SB 41108 10(31/88 41124 370 Z 450 z 401 z 339 z BTQ : 08 TEFLON LQC i ' 704 A/S - FINE POWDER 0 8 WEIGH HOOD 1/17/88 34883 <0 z 6/13/88 34988 420 z 9/5/88 34090 4S0 z 9/25/88 34989 390 z BTO: 08 TEFLON LQC: 70S DISPERSION PACK OUT AREA 3/29/86 37381 450 z 8/18/88 37383 360 z BTO: 03 LQC: 706 TEFLON FINE POWDER DRYER #3 3/27/88 34271 360 z 4/25(88 34270 360 z 8/20(38 34273 330 z 8/28/88 34272 450 z 10/25/88 34278 420 z 11/11/88 34274 330 z 11/11/88 34275 330 z BTO: 0B L O t: 70S TEFLON P/S - FINE POWDER PACKOUT (08PJ) 4/14/88 14135 420 p 4/29/88 14147 420 p 6/23/88 14195 420 p 7/7/88 14349 420 p 7/18/88 14403 420 p 7/27/88 14399 420 p 8/1Q/B8 14394 420 p BTO: 08 TEFLON@ LOG: 710 FP8D AUTOCLAVE CONTROL ROOM 2/9/88 46048 ........................ . 330 z -------------- --------------- Tuesday, January 16,2001 9:41:56AM Pere Chemical C-/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 Cone Unit <0.03 MPB <0.03 MPB 0 .0 3 MPB 0 .0 3 MPB Percent 5.4% 5.4% 5.4% 5.4% C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 0.396 MPB 0.07 MPB >1.0 MPB >1,0 MPB 7D.7% 12.5% 178.6%** 178.6%** C-8/FC-143 C-8/FC-143 0.04 MPB 0.3 MPB 7.1% 53.6% C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C -8/F C 4 4 3 08/F C 443 08/FC -143 0.072 MPB 0.144 MPB 0 .0 3 MPB 0.04 MPB 0.16 MPB 0.1 MPB 0.07 MPB 12.9% 25.7% 5.4% 7.1% 28.6% 17.9% 12.5% none C-8/FC-143 none C-8/FC-143 none C-8/FC-143 acme C-8/FC-143 none C-8/FC-143 none C-8/FC-143 none C-8/FC-143 0.178 MPB 0 .0 3 MPB 0 .0 3 MPB 0 .0 3 MPB <0.03 MPB 0 ,0 3 MPB 0 ,0 3 MPB 31.8% 5.4% 5.4% 5.4% 5.4% 5.4% . 5.4% C -8 /F C 4 4 3 ....... . . 0.413 MPB 73.8% Page 2 of 12 AJP003894 EID 113028 Sample Dt Sam ple# Duration Type Employee Name 2/9/8B 46047 6/1/83 46049 6/13/B 46048 6/24/83 46050 8/28/88 46061 10/19/88'40052 10/19/88 46053 330 Z 435 Z 420 Z 420 Z 450 z 480 z 480 z BTO: 08 LOC : 712 TEFLON NORTH END OF DRYER #3 1/18/88 46332 360 z 6/13/88 46333 420 z 8/24/88 46334 375 z 10/25/88 46335 420 z BTO : CB LOC: 715 TEFLON SOUTH END DRYER#2 1/23/88 46008 357 z 6/13/88 46010 420 z 8/24/88 46011 360 z 10/14/88 46347 330 z BTO : 08 LOC: 717 TEFLON ROOF AREA-GENERAL 1/3/88 46083 330 Z " 6/1/88 46084 435 z 8/23/88 46085 360 z 10/31/88 46086 344 z BTO: 08 LOC: 719 TEFLON MOISTURE CHECK 2/3/88 46345 330 z 6/21/88 46346 386 z BTO : 08 LOC : 720 TEFLON INJECTION PUMP AREA 1/3/88 40596 330 z 4/25/88 40677 360 z 10/14/88 41109 330 z Tuesday, January 16,2001 9:41:56 AM Pera Chemical C-8/FC-143 C-8/FC-143 C-8/FC-143 C-S/FC-143 C-8/FC-143 C-S/FC-143 C-8/FC-143 Cone Unit 0.095 MPB 0.177 MPB OOS MPB 0 .0 3 MPB 0.03 MPB 0.06 MPB 0.1 MPB Percent 179% 31.6% 14.3% 5.4% 5.4% 10.7% 17.9% C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 0.155 MPB 0.087 MPB 0.05 MPB 0.1 MPB 27.7% 15.5% 8.9% 17.9% C-8/FC-143 C-S/FC-143 C-8/FC-143 C-S/FC-143 0.252 MPB 0.135 MPB 0 .0 3 MPB 0.35 MPB .0% 24.1% 5.4% 62.5% C-8/FC-143 C-8/FC-143 C-S/FC-143 C-8/FC-143 0 .0 3 MPB 0.196 MPB 0 .0 3 MPB 0.2 MPB 5.4% 35.0% 5.4% 35.7% C-S/FC-143 C-S/FC-143 0.091 MPB 0 .0 3 MPB 16t3% 5.4% C-8/FC-143 C-8/FC-143 C-8/FC-143 0.149 MPB 0.089 MPB 0.08 MPB 26.6% 15.9% 14.3% PageSof 12 AJP003895 EID 113029 Sam ple Dt S am ple# D uration Type Em ployee Name BTO : 08 TEFLON LOC : 726 AISLE IN FRONT OF WAX SEPARATOR 1/23/88 35497 345 Z 4/16/88 35499 369 Z 8/18/88 35504 360 Z BTO : 08 TEFLON LOC 727 FINE POWDER CELL AREA 8/18/08 3S177 360 Z BTO : 08 LOC: 728 TEFLON WAXROOM- B-162-1S T FLOOR 1/3/88 37197 330 Z 4/16/88 40682 329 Z 8/23/88 41083 350 Z 8/31/88 41098 360 Z BTO: 08 LOC : 731 TEFLON A/S - INSIDE F.P.

AR226-2297 David M Rurak 02/10/2003 06:52 PM To: Seiichi Tanaka/PO/DuPont@DuPont cc: Ta-Wei Fu/CL/DuPont@DuPont, Hidetaka Hiromatsu/PO/DuPont@DuPont, Katsunosuke Kitagawa/PO/DuPont@DuPont, Kazuaki Suzuki/PO/DuPont@DuPont, Akito Abe/AE/DuPont@DuPont, Catherine A Barton/AE/DuPont@DuPont Subject: R e : CEG Calculation at Shimizu Site D Tanaka-san, Please allow me to clarify a couple of items: 1) First of all, the C E G is not calculated for a plant site.

P hM6- % P ./ A/ RECEIVED V CPP T CRIC 'J?.

Katherine E.

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Telomer Research Program 1200 South Hayes S treet Arlington, Virginia 22202-5050 Tet (703)413-1100 45264 Fax (703)4158111 AR&3.G - /A71 G A IK I/V K ASAHI GLASS COMPANY Clariant February 14, 2003 Mary F.