From: To: CC: Sent: Subject: Attachments: Fletcher, Steven G CIV NAVSEA HQ, SEA 05 Hunstad, Mary P CIV NAVSEA HQ, SEA 05 (mary.hunstad@navy.mil) Berkoski, Daniel T CIV NAVSEA, SEA 05 2/8/2017 12:08:37 PM FW: GAO AFFF Questions_RESPONSE GAO 100947 - AFFF Questions Rev1 sgf (2).docx Mary, Here are my proposed responses to the GAO questions.

GAO Review of DOD Drinking Water Contaminants (code 100947) Follow-up Questions for the Department of the Navy Note: These questions are addressed to the Department of the Navy, to answer on behalf of both the Navy and the Marine Corps.

'ECHA EUROPEAN CHEMICALS AGENCY Committee for Risk Assessment (RAC) Committee for Socio-economic Analysis (SEAC) Opinion on an Annex XV dossier proposing restrictions on Perfluorooctanoic acid (PFOA), its salts and PFOA-related substances ECHA/RAC/RES-0-0000006229-70-02/F ECHA/SEAC/RES-0-0000006229-70-03/F Compiled version prepared by the ECHA Secretariat of RAC's opinion (adopted 8 September 2015) and SEAC's opinion (adopted 4 December 2015) US00007621 'ECHA EUROPEAN CHEMICALS AGENCY 8 September 2015 ECHA/RAC/RES-0-0000006229-70-02/F 4 December 2015 ECHA/SEAC/RES-0-0000006229-70-03/F Opinion of the Committee for Risk Assessment And Opinion of the Committee for Socio-economic Analysis on an Annex XV dossier proposing restrictions of the manufacture, placing on the market or use of a substance within the EU Having regard to Regulation (EC) No 1907/2006 of the European Parliament and of the Council 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (the REACH Regulation), and in particular the definition of a restriction in Article 3(31) and Title VIII thereof, the Committee for Risk Assessment (RAC) has adopted an opinion in accordance with Article 70 of the REACH Regulation and the Committee for Socio-economic Analysis has adopted an opinion in accordance with Article 71 of the REACH Regulation on the proposal for restriction of Chemical names: EC No.: CAS No.: Perfluorooctanoic acid (PFOA), its salts and PFOA-related substances 206-397-9 335-67-1 This document presents the opinions adopted by RAC and SEAC.

ORIGINAL DOES NOT CONTAIN CBI 3M Environmental, Health and Safety Operations 3M Center, Building 0224-05-W-03 St.

RECEIVED PFOS Ecotoxicological Testing Results OPlfyffQpprison of Effect Concentrations Calculated Using Different Sample Purity M H M rr^an {n fasured concentrations, except where * (nominal).

Andrew Seacat 04/28/04 01:44 PM To: Melinda M.

A R 2% -0 % \ Argus Research Laboratories, Inc. 905 Sheehy Drive, Building A Horsham, Pennsylvania 19044 T: (215) 443-8710 F: (215) 443-6587 PROTOCOL 418-008 SPONSOR'S STUDY NUMBER: 6295.9 STUDY TITLE: Combined Oral (Gavage) Fertility, Developmental and Perinatal/Postnatal Reproduction Toxicity Study of PFOS in Rats.

AR226-2096 Test R esulti Sample Date Range Concentration Range Action Level Industrial Hygiene 1/1/96 1201/96 100% Sample Dt Sample ff Duration Type Employee Name BTO: OS TEFLON LOC: 113 P/S-SHIFT MECHANIC (58MD) 1/1006 22569 330 P 8/26/96 24210 360 P Pets Chemical S8MD 08/FC-143 58MD C-8/FC-143 Cons Unit Percent 0.019 MPB 0.08 MPB 04% 5.4% BTO: 08 TEFLON t o c ; 70S P/S - FINE POWDER PACKOUT (08PJ) 3/1106 23060 360 P 12/996 24677 420 P 08PJ 08/F 0143 06PJ 08/FC-143 0.07 MPB 0.026 MPB 125% 4.6% BTO: 06 TEFLON LOC: 731 A/S - INSIDE FJ>.

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t4/U6_ 3<337 419 H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations TRADE SECRET Study Title H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations Revision No. 1 Volume 4 o f 5 3X37 Revised Page DuPont-5386 Test Guidelines: U.S.

AR226-3337 Migration QtAgEQ frQjn^IFE It was decided to develop a new method of extraction of APFO from PTFE samples (extraction during 8 h at reflux with 9 5 % ethanol at pH - 10 on finely ground material) as well as a new method of detection of APFO using capillary gas chromatography.

AR226-3380 Perfluorooctanoic Acid: Relationship Between Repeated Inhalation Exposures and Plasma PFOA Concentration in the Rat P.

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