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.

Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800/Cincinnati, OH 45202-3957 /Tel: 513,381.2838 /Fax: 513.381.0205 / www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing Robert A.

cm & r "McCrea, Deborah" <mccrea@taftlaw.com> 06/07/2010 12:12 PM To NCIC OPPT@EPA cc "Bilott, Robert A." < bilott@taftlaw.com> bcc Subject 06/07/2010 Letter To EPA Docket Center T c l f t / Celebrating 125 Years Deborah McCrea / Legal Assistant Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800 Cincinnati, Ohio 45202-3957 Tel: 513.381.2838 Fax: 513.381.0205 www.taftlaw.com / mccrea@taftlaw.com o C_ ,, 'C' fv -- rjl Internal Revenue Service Circular 230 Disclosure: As provided for in Treasury regulations, advice (if any) relating to federal taxes that is contained in this communication (including attachments) is not intended or written to be used, and cannot be used, for the purpose of (1) avoiding penalties under the Internal Revenue Code or (2) promoting, marketing or recommending to another party any transaction or matter addressed herein.

3M 3M Environmental Laboratory Project No.

M A S 6 - 0 2 /5 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE________________________________________________ Identity: A mixture containing periluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR A56 - 0lOl ACUTE TO XIC ITY TO FISH (FATHEAD MINNOW ) TEST SUBSTANCE _________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC -3041. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR fi.S.6 - 0 *\o2> ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE___________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-3041. (1Octanesulfonic acid) (CAS # 2795-39-3).

"f\R. cZ fa U 03 To: Mary Dominiak/DC/USEPA/US@EPA, oppt.ncic@epamail.epa.gov cc: Subject: DuPont submission to AR-226 To : Mary F.

A R s.fi.6 _ \x q th Documents in TRP Database Source Title / D escription N o n -T R P Fluorinated Surfactants and Repellents (Kissa, 2001) Bioconcentration in Carp (study conducted for Japan METI) The First Environmental Survey of PFOS and Related Compounds in Japan Levels of PFOA and Other Related Compounds in the Blood of Japanese People 3M: Interactions of Fluorochemicals with Rat Liver Fatty Acid-Binding Protein 3M: Fluorochemicals in Human Blood (Dec. 2002) 3M: Branched vs.

3M Specialty Materials 3M Center St.

Summary N-EtFOSE Rat Teratology Study Numbers: 3MT-6316.7, Argus 418-011 Comoound & Lot: N-EtFOSE (N-Ethyl-Perfluoroocyanesulfonamido Ethanol) - Lot FM3923 (30035, 30037, 30039) 98.2% pure (SMD Analytical Request 52489) Analytical Documentation filed along with final report.

NOTICE: The information provided to the agency contains information that 3M voluntarily has submitted as part of our continuing discussions with the EPA regarding fluorochemistry.

3M ENVIRONMENTAL LABORATORY REPORT NO.

3M ENVIRONMENTAL LABORATORY REPORT NO.