ff 3M Specialty Materials May 23, 2000 3M Center St.

Attachments to Letter to C.

A 2 2 2 -lclort Report Title Evaluation of the Northwest Bioanalytical Method Validation Reports for P F O S and Related Analytes in Human Serum or Plasm a in Meeting the Requirements of the _________ EDABioanalyticaLM ethod Validation Q A I Report No. 405-503 Data Requirement Full Validation of Bioanalytical Method Author Nancy Benson Philippe O urisson Quality Associates, Inc. 9017 Red Branch Road, Suite 102 Columbia, M D 21045 Sponsor 3M Environmental Laboratories 935 Bush Avenue Bldg 2-3E-09 St Paul, M N 55106 Report Date December 31, 2001 Report Number QAI 405-503 Number of Pages 26 337 TABLE OF CONTENTS I.

3 February 2004 AR226-1938 To: Mary F.

Katherine E.

3M 30p Kather ine E.

AR226-2262 ISC Modeling Methodology and Results Emission Source Information The ISC3 model was used to calculate ambient ground-level vapor concentrations and deposition rates for year 2000 actual C8 emissions from the Washington Works site.

AR226-2581 GIST MEETING March 5,2002 Dave Watkins, chairperson, called the meeting to order at 9;15 am on March 5,2002.

AR226-2731 WAAPFSOHICNOGNATTOTANINWMOERNKTS Part II - Process Water Charts Prepared for Meetings at Shimizu Jan. 20-22, 2003 Company Sanitized.

AR226-3340 o2 \ % E.l.

Larry R.

NAME (Please p rin t clearly) /*!

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.

3M Corporate Toxicology and Regulatory Services 3M Center, Building 0220-06-E-03 St.

VIA OVERNIGHT MAIL August 12, 2008 Andrea V__________ Corporate Counsel /R22G-33a DuPont Legal Wilmington Office Buildings 1007 Market Street Wilmington, DE 19898 302-774-6443 " el 302-774-4812 Fax andrea.v.malinowski@usa.dupont.com E-mail Document Control Office US Environmental Protection Agency Office of Pollution Prevention and Toxics EPA East Building Room 6428 1201 Constitution Avenue, NW Washington, DC 20004 Re: EPA-HQ-OPPT-2003-0012 PFOA: Water Sample Results - New Jersey Dear Document Control Office: In response to an Open Public Records Act (OPRA) request submitted to the New Jersey Department of Environmental Protection (NJDEP), DuPont received documents containing results for PFOA water analysis from multiple public water districts located throughout New Jersey.