STUDY TITLE Extraction o f Potassium Perfluorooctanesulfonate from Quail Serum and Quail Liver for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREM ENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COM PLETED ON September 06, 2001 PERFORM ING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

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.

AR226-2458 J Stephen Opp 0 5 /1 7 /9 9 0 1 :4 0 PM To: Roger J Zipfel/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont cc: Andrew S Hartten/AE/DuPont@DuPont Subject: Washington Works Groundwater Results Summary Tables Roger and Bob: Attached you will find a spreadsheet that summarizes the 2 groundwater sampling events at Washington Works.

WASHINGTON WORKS - PERMIT WV0001279 TREATED SUPERNATE DISCHARGE THROUGH FILTER SYSTEM (Letter, R.

RECYCLED \ CO AR226-2621 CWK PROJECT CLF LEACHATE SAMPLING 6/04 CLF LEACHATE SAMPLING 6/04 EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING, EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPUNG EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING EFFLUENT/RIVER SAMPLING SRCNAME THEME DATESMPL SMPLT SAMPLE NUMBER FBLK1 Blank Water 6/3/2004 FB CWK-K-FBLK1 SUMP 1,2,3,5-COMP Other liquid 6/3/2004 FS CWK-Z-SUMP 1,2,3,5-COMP AD3-JUNE10 Surface Water 6/11/2003 DUP CWK-W-AD3-JUNE10-2 AD3-JUNE10 Surface Water 6/11/2003 DUP CWK-W-AD3-JUNE10-2 AD3-JUNE10 Surface Water 6/11/2003 FS CWK-W-AD3-JUNE10 AD3-JUNE10 Surface Water 6/11/2003 FS CWK-W-AD3-J UNE10 AD3-JUNE2-8 Surface Water 6/11/2003 FS CWK-W-AD3-JUNE2-8 AD3-JUNE2-8 Surface Water 6/11/2003 FS CWK-W-AD3-JUNE2-8 AD3-JUNE9 Surface Water 6/10/2003 DUP CWK-W-AD3-JUNE9-2 AD3-JUNE9 Surface Water 6/10/2003 DUP CWK-W-AD3-JUNE9-2 AD3-JUNE9 Surface Water 6/10/2003 FS CWK-W-AD3-JUNE9 AD3-JUNE9 Surface Water 6/10/2003 FS CWK-W-AD3-JUNE9 DRI13 Surface Water 6/9/2003 FS CWK-W-DRH3 DRI13 Surface Water 6/9/2003 FS CWK-W-DRH3 DRI14 Surface Water 6/9/2003 FS CWK-W-DRH4 DRI14 Surface Water 6/9/2003 FS CWK-W-DRH4 DRH 5 Surface Water 6/9/2003 FS CWK-W-DRI15 DRH 5 Surface Water 6/9/2003 FS CWK-W-DRH5 DRH 6 Surface Water 6/9/2003 FS CWK-W-DRH6 DRI16 Surface Water 6/9/2003 FS CWK-W-DRH6 DRH 7 Surface Water 6/9/2003 FS CWK-W-DRH7 DRH 7 Surface Water 6/9/2003 FS CWK-W-DRI17 DRI18 Surface Water 6/9/2003 FS CWK-W-DRH8 DRH 8 Surface Water 6/9/2003 FS CWK-W-DRH8 DRH 9 Surface Water 6/10/2003 FS CWK-W-DRH9 DRI19 Surface Water 6/10/2003 FS CWK-W-DRH9 DR120 Surface Water 6/10/2003 FS CWK-W-DRI20 DRI20 Surface Water 6/10/2003 FS CWK-W-DRI20 DRI21 Surface Water 6/10/2003 FS CWK-W-DRI21 DRI21 Surface Water 6/10/2003 FS CWK-W-DRI21 DRI22 Surface Water 6/10/2003 FS CWK-W-DRI22 DRI22 Surface Water 6/10/2003 FS CWK-W-DRI22 DRI23 Surface Water 6/10/2003 FS CWK-W-DRI23 DRI23 Surface Water 6/10/2003 FS CWK-W-DRI23 DRI24 Surface Water 6/10/2003 FS CWK-W-DRI24 DRI24 Surface Water 6/10/2003 FS CWK-W-DRI24 DRO01 Surface Water 6/9/2003 DUP CWK-W-DRO01 -2 DRO01 Surface Water 6/9/2003 DUP CWK-W-DRO01-2 DRO01 Surface Water 6/9/2003 FS CWK-W-DRO01 DRO01 Surface Water 6/9/2003 FS CWK-W-DRO01 DRO010 Surface Water 6/9/2003 FS CWK-W-DRO010 DRO010 Surface Water 6/9/2003 FS CWK-W-DRO010 DRO011 Surface Water 6/9/2003 FS CWK-W-DRO011 DRO011 Surface Water 6/9/2003 FS CWK-W-DRO011 DRO02 Surface Water 6/9/2003 FS CWK-W-DRO02 C8 results Envista 111104.xls Page 1 TOP BOTTOM FILTERED CASNO ANALYTE RsItPost RsItVal UNITS Hit LAB_ANALYTE QUAL_EPA 0 T 3825261 FC-143 <10 5 NG/L 0 FC-143 0 T 3825261 FC-143 124000 124000 NG/L 1 FC-143 T 3825261 FC-143 81400 81400 NG/L 1 FC-143 T 2795393 PFOS 133 133 NG/L 1 PFOS T 3825261 FC-143 78600 78600 NG/L 1 FC-143 T 2795393 PFOS 161 161 NG/L 1 PFOS T 3825261 FC-143 139000 139000 NG/L 1 FC-143 T 2795393 PFOS 121 121 NG/L 1 PFOS T 3825261 FC-143 97400 97400 NG/L 1 FC-143 T 2795393 PFOS 131 131 NG/L 1 PFOS T 3825261 FC-143 96900 96900 NG/L 1 FC-143 T 2795393 PFOS 147 147 NG/L 1 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 <50 25 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS NQ 0 NG/L 0 PFOS T 3825261 FC-143 154 154 NG/L 1 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 56.7 56.7 NG/L 1 FC-143 T 2795393 PFOS NQ 0 NG/L 0 PFOS T 3825261 FC-143 140 140 NG/L 1 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 233 233 NG/L 1 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ . 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 50.9 50.9 NG/L 1 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 NQ 0 NG/L 0 FC-143 T 2795393 PFOS <50 25 NG/L 0 PFOS T 3825261 FC-143 378 378 NG/L 1 FC-143 QUALJNHOUSE REVIEW METHODNO PREPMTHD PREPREP DRY 01M-008-046 NS NS W 01M-008-046 NS NS W 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01 M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01 M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01 M-008-046 None NS 1 01 M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 1.M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 01M-008-046 None NS 1 C8 results Envista 111104.xls CWK LAB NUMBER RSLTMOD RESULT UNIT MDL PQL L000264-2 < 10 NG/L 10 50 L000264-1 124000 NG/L 10000 50000 L34720-42 81400 NG/L 5000 L34720-42 133 NG/L 50 L34720-45 78600 NG/L 5000 L34720-45 161 NG/L 50 L34720-16 139000 NG/L 10000 L34720-16 121 NG/L 50 L34720-23 97400 NG/L 5000 L34720-23 131 NG/L 50 L34720-26 96900 NG/L 5000 L34720-26 147 NG/L 50 L34720-17.

RECYCLED CO AR226-2642 AR226-2642 Shimizu C8 Modeling Results -10/4/04 Scenario Plan B-l (w/o DBS) Plan B-2 (w/o DBS) Plan B-3, DBS @95% Plan B-3, DBS @96% Plan B-3, DBS @98% Plan B-4, DBS @95% Plan B-4, DBS @96% Plan B-4, DBS @98% Maximum Annual Average (all concentrations in ug/m3) 1997 0.836 0.637 0.283 0.234 0.099 0.191 0.161 0.076 1998 0.992 0.762 0.338 0.279 0.118 0.233 0.196 0.092 1999 0.824 0.622 0.276 0.228 0.097 0.184 0.154 0.074 Note: All maximum predicted annual average concentrations occur on the plant fenceline.

RECYCLED O) o> AR226-2676 PROJECT ANNUAL C 8 SAMPLING 1991 ANNUAL C8 SAMPLING 1991 ANNUAL C8 SAMPLING 1991 ANNUAL C8 SAMPLING 1991 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1994 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 SRCNAME LOWER POND LOWER POND UPPER POND UPPER POND LM W -2A L M W -2A L M W -5B LM W -5B LOWER POND LOWER POND STREAM MN RD STREAM MN RD UPPER POND LMW-1 LM W -2A L M W -5B LM W -7 L M W -8 LOWER POND R T 33 STREAM TRIP BLANKS UPPER POND LMW-1 LM W -2A L M W -6 LM W -7 LM W -8 LOWER POND TRIP BLANKS UPPER POND EQUIPM ENT BLANKS LEACHATE LMW-1 L M W -2A LM W -3A L M W -5B LM W -7 L M W -8 LOWER POND RT 33 STREAM UPPER POND 002(LEACHATE BASIN) FIELD BLANKS LEACHATE LMW-1 C8 results Envista 111104.xls THEME O ther liquid O ther liquid O ther liquid O ther liquid Groundwater Groundwater Groundwater Groundwater O ther liquid O ther liquid O ther liquid O ther liquid O ther liquid Groundwater Groundwater Groundwater Groundwater Groundwater O ther liquid O ther liquid Blank W ater O ther liquid Groundwater Groundwater Groundwater Groundwater Groundwater O ther liquid Blank W ater O ther liquid Blank W ater O ther liquid Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater O ther liquid Surface W ater O ther liquid O ther liquid Blank W ater O ther liquid Groundwater DATESMPL SMPLT 11/22/1991 FS 12/27/1991 FS 11/22/1991 FS 12/27/1991 FS 3/15/1994 FS 9/20/1994 FS 3/15/1994 FS 9/20/1994 FS 3/15/1994 FS 9/20/1994 FS 3/15/1994 FS 9/20/1994 FS 3/15/1994 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 FS 7/23/1997 TB 7/23/1997 FS 5/28/1998 FS 5/28/1998 FS 5/28/1998 FS 5/28/1998 FS 5/28/1998 FS 5/28/1998 FS 5/28/1998 TB 5/28/1998 FS 7/19/1999 EB 7/20/1999 FS 7/20/1999 FS 7/20/1999 FS 7/19/1999 FS 7/20/1999 FS 7/20/1999 FS 7/20/1999 FS 7/19/1999 FS 7/20/1999 FS 7/19/1999 FS 7/25/2000 FS 7/24/2000 FB 7/25/2000 FS 7/24/2000 FS LTL SAMPLE NUMBER LOWER POND LOWER POND UPPER POND UPPER POND L M W -2A L M W -2A LM W -5B LM W -5B LOWER POND LOWER POND STREAM MN RD STREAM MN RD UPPER POND W W K-LMW -1 W W K-LMW -2A W W K-LMW -5B W W K-LMW -7 W W K-LMW -8 W W K-LOW ERPOND W W K-RT 33 STREAM W W K-TRIP BLANK W W K-UPPERPOND W W K-LT-LM W 1 W W K-LT-LMW 2A W W K-LT-LMW 6 W W K-LT-LMW 7 W W K-LT-LMW 8 W W K-LOW ERPOND TRIP BLANK W W K-UPPERPOND W WK-K-EQBLK W W K-G-LT-LEACHATE W W K-G-LT-MW -1 W W K-G-LT-MW -2A W W K-G-LT-MW -3A W W K-G-LT-MW -5B W W K-G-LT-M W -7 W W K-G-LT-MW -8 W W K-W -LT-LOW ER-POND W W K-W -LT-RT-33-STREAM W W K-W -LT-UPPER-POND LTL -W -002 LTL-K-FBLK-1 LTL-L-LEACHATE LTL-G -LM W -1 Page 1 oeoei!

AR226-2733 1 The miracles o f science Study Title ADSORPTION-DESORPTION SCREENING STUDIES OF AMMONIUM PERFLUOROOCTANOATE Author William R.

PRODUCT AREA: .

FOR DU FONT USE ONLY AR226-2779 E.

AR226-2794 FOR DU PONT USE ONLY Approximate Lethal Concentration by Inhalation (ALC) of Haskell Laboratory Peport No. 293-85 MR No U E.

TRADE SECRET AR226-3084 DuPont HL-1997-01291 Study Title H-23004: Oral Approximate Lethal Dose (ALD) in Rats Laboratory Project ID: HL-1997-01291 Author: Tracy A.

CONFIDENTIAL AR226-3110 DPT478/992105 This report is considered by the Study Director to be the `final drift''and has bien submitted fthe Huntingdon Life Scienees.Quality Assurance Department for Audit _ _ The Sponsor is requested to review this document and commnni|aterafi.y coipients^to^fc_S^Jdrectc-,as soon as possible.

M s. 2 6 - 3 2 7 7 M 1 2 6 -& 7 7 DR.U.NOACK-LABORATORIUM FR ANGEWANDTE BIOLOGIE Effects on the Development of Caenorhabditis elegans in a Water-Sediment System acc. to T r a u n s p u r g e r et al. (19 97 ) Sponsor Asahi Glass C la r ia n t Daikin In d u str ies Ltd D upont Author Gunda W inkelm ann Test Facility D r.U .N o ack-La bo ra to rium F r A n g e w a n d te B io lo g ie Kthe-Paulus-Strae 1 D-31157 Sarstedt Laboratory Prgiect ID Project-No.

AR226-3360 > ATMOMSPEHCAEHLRACINCOISHLMOIFSLESOTFCIMnFFEL2SnU+1OACNRHDO2CTDHEE2LGOORHMAEDRATION Valrie Bossoutrot*, Tanya Kelly#, Isabelle Magneron*, Wahid Mellouki*, Howard Sidebottom#, Klaus Wirtz and Georges Le Bras* * LaCbe*onrCtarthooeidmreeiEsdtsertyuCdDoimeopsbaAurtsmmtiboeinnetn,ettUaSlneyisvstedremslietMyseRCdoiatlelcertrgifesn,,eDCou,NbVRliaSnleO(nIcRrliLaa)(nSsP()F) SETAC Prague 18-22 April 2004 Context : Long chain perfluorinated carboxylic acids (PFCAs, CnF2n+1C(0)0H, n = 6-12) oPbFseCrAvesd:innfoisthgaenndermaallmymusaelsd directly in consumer or industrial m- parteesruimalasbly degradation products of precursor chemicals : potentially FTOHs Fluorotelomer alcohols (FTOHs, CnF2n+1CH2CH2OH) : --UPsreosd:uicnttieornm: e5dxi1a0te6skignymra1n(u(82f0a0%c%tupnroeolynomfpdoeirlvyicemraseperpipclricoadtuiocntss)) -- AOtbmseorsvpehdeirnicthsoeuartcmesos:pdheegrread(uaptioton 1o35poplgymnre3r) and non polymeric materials - EthxapteicntceodrtpoorpaatretiFtiToOn Hinsto(?