DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P .O .

Isidores J Zanikos/AE/DuPont, Andrea Malinowski/DPL/DUP, Michael J Lukas/AE/DuPont, DAWN D JACKSON <JACK80DD@VWVPS.A1.EMAILWPONrT.COM> C-8 AND DRINKING WATER.

Best regards and thank you, DuPont Deutschland Holding GmbH & Co.

DuPont. com/corp/email_disclaimer. hfcml - C.htm EXP000184

ATSttCn:A SDeocctuiomne8n(et)P/FroYcIessing Center Attachment 1 P-1 P-1 July 28,2006 Page 4 of 5 M Z26 _373J- Acronym codefor Tables 1 and 2 In Tables 1 and 2, the following acronyms are used: acronym meaning CW FW WW DuPont Chambers Works facility in Deepwater, New Jersey DuPont Fayetteville Works facility in Fayetteville, North Carolina DuPont Washington Works facility in Parkersburg, West Virginia PPPFFFHPBeAxAA PFHpA PPPPFFFFOUDNnAAAA PFDoA PFBS PPPFFFOHOSxSSA PPeerrfflluuoorroobpuentatannooicicaacicdid Perfluorohexanoic acid Perfluoroheptanoic acid Perfluorooctanoic acid Perfluorononanoic acid Perfluorodecanoic acid Perfluorotmdecanoic acid PPPeeerrrfffllluuuooorrrooobhdueoxtdaaennceaenssuoulilfcfooanncaaitdtee Perfluorooctane sulfonate Perfluorooctane sulfonamide Attachment 1 Spaed Matrix Lab Blank 1 cw # P % cw p 3 cw n m 34 CW (DUPLICATE) c w v 5 cw i cw < P * CW 7 cw qp ( CW WG18817-102 Y2 WG18817-101 Y1 L8789-1 Y1 LB789-2 Y1 L87B9-3 Y1 WG18817-103Y1 L8789-4 Y1 L8789-5 Y1 LB789-5 Y1 LB789-6 Y1 L8789-7 Y1 L8789-8 Y1 % Recovery ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL ng/mL WQ18817 W Q 18817 WQ18817 WQ18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 WG18817 PFBA 81.2 ND ND ND ND ND ND <1.44 <1.44 <1.44 NO ND PFPeA 79.0 ND ND ND ND ND ND ND NO ND ND ND PFHxA 85.8 ND 1.82 ND <0.900 <0.900 ND ND ND <0.900 ND <0.900 PFHpA 83.5 ND ND ND ND ND <1.41 3.71 3.71 11.7 6.91 ND PFO A 110 ND 7.71 9.72 24.1 21.6 42.8 13.4 13.4 111 56.7 26.6 PFNA 11B ND 4.28 2.90 7.10 6.78 18.3 4.22 4.22 53.1 29.2 2.37 PFDA 115 ND <1.06 <1.08 1.64 1.51 8.47 1.82 1.82 13.5 7.47 <1.08 PFUnA 128 ND <1.02 <1.02 2.37 2.60 1.70 <1.02 <1.02 3.99 1.55 ND PFDoA 60.9 ND ND ND <0.600 <0 600 0.943 <0.600 <0.600 1.10 0.737 ND PFBS 94.8 ND ND ND ND ND ND ND ND ND ND ND PFHxS 104 ND <3.72 <3.72 39.1 33.5 <3.72 <3.72 <3.72 4.28 <3.72 3.81 PFOS 112 ND 51.1 35.3 68.2 58.0 25.7 35.0 36.0 39.0 53.8 36.8 PFO SA 73.5 ND ND ND ND ND ND ND ND NO ND ND Attachment 1 PFBA PFPeA PFHxA PFHpA PFOA PFNA PFDA PFUnA PFDoA PFBS PFHxS PFOS PFOSA tp // CW ^ k F w t f f lV L8789-9 Y1 LS789-10Y1 L8789-11 Y1 ngftnL ngAnL WG1B817 WG18817 ngAmL WG18817 ND ND NO ND ND ND ND ND ND NO 1.48 ND 12.9 13.0 28.3 <1.53 3.97 2.28 ND <1.08 <1.08 ND <1.02 <1.02 ND ND ND ND ND ND <3.72 <3.72 6.64 30.7 46.9 37.2 ND ND ND t-2.

| Q Revised groundwater modeling by DuPont supports the previous conclusion that | no potential groundwater migration pathway exists beneath the Ohio River to the Little Hocking Well field.

May 27, 2009 Via Federal Express DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O.

Zipfel" <Z1PFEL@WWPS-A1 .EMA1L.DUPONT.COM> on 09/1 1/99 03:11:06 AM To: cc: Subject: Roger J Zipfel/AE/DuPont (C-8 DORDRECHT/09-Feb-1998)C-8 analytical results Date; Mon, 9 Feb 1998 15:13;00 EDT From; "Roger J.

Robert Rickard DuPont Haskell Laboratory Elkton Road, P.O.

The Ohio EPA recommends sampling the bottom of the water column at the selected location approximately 3 miles upstream of the DuPont facility near river mile marker 185.5.

SAMPLES FROM THE MER9EDE RIVER, Sample point . . .08 in ppb Hardinxveld, upstream Baanhoekbridge, upstream DuPont, downstream House te Hervede, downstream N.D. - make an action plan to N.D. reduce this emission. 7.1 7.0 * SAMPLES OF GEVUDO, 9AERSTREAH FROM DUPONT, Sample point Gevudo #i Gevudo #2 CS in ppb J ;53 * > 6.6 * < __ SAMPLES FROH DRINK9ATER VEILS, ....

DuPont-14809; 73 pages / 30 5

Mark H Russell 05/06/20021150 AM To: cc: Subject: Catherine A Barton/AE/DuPont DuPont Modeling soil concentrations Cathy, I tried calling you but you weren't in.

AR226-3145 DuPont-4002 HASKELALNLDAIBNODRUASTTORRIAYLFMOERDTICOIXNIECOLOGY H-24390: STATIC, ATOCUDTaEph4n8ia-HmOaUgnRaSCREENING TEST PURPOSE: This is a rangefmding study designed to provide an estimate of aquatic toxicity using fixed test concentrations and data measurements at predetermined intervals.

DuPont wou1~ be interested in the results of these studi{s.