BACK TO MAIN ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE_____________________ Identity: Perfluorooctanoic acid, tetrabutylammonium salt; may also be referred to as PFOA tetrabutylammonium salt, tetrabutylammonium perfluorooctanoate, N2803-2, or as a major component of L-13492.

\f vasr ntrA AUEnpnvoitinerdeoynSmtaetnetsal Protection flRl%-COOO A<C1no7dm03Pm}uubnhiecaAtilofsnirs*, SdaeaSem, Environm ental News FOR RELEASE: TUESDAY, MAY 16,2000 Following negotiations between EPA and 3M, the company today announced that it will voluntarily phase out and End substitutes for pcrfluorooctanyl sulfonate (PFOS) chemistry used to produce a range of products, ipppnolecartlnesuinssdtttiieonanlgpltyhsinaopsmotehseeeooueaftnrtvaihnsirekdoirntdomSeheveouentmltco*hpahgnsaauhvrbedesaaltliitntshuetrtsaoe.nsnd3gbMtytheeyndeedaanetravn'scisryueopnntopdmlafieeocndcrtuttohomveEueplrPartAothedeiiunnlcodthniicouganmtteeoardnfmttahh.neaEditrPtahiAnneivsmsoeulacvplheptediosmrsptuisrcoeatdshluseacnactdrose.mcvopeuarlyndy's eliminat"eTdo,daanyd'sppuhbaliscehoeuatlathnnaonudntcheemeennvtirboyn3mMenwt willilelnbseurperothteacttfeudt,u"rseaeidxpEoPsAureAtdomthineissetrcahtoemr CicaarloslwMil,lBbreowner.

Corporate Health Physics Corporate Occupational Medicine Corporate Product Responsibility Corporate Toxicology 3M Medical Department 3M Center, 220-2E-02 PO Box 33220 St.

fm-oi% BIODEGRADATION TEST SUBSTANCE Identity: Perfluorooctanesulfonate, Ammonium salt; may also be referred to as PFOS NH4+salt or FC-93. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, ammonium salt, CAS #29081-56-9) Remarks: The test sample is a mixture of the test substance in isopropanol and water (25% test substance, 20% isopropanol, 55% water).

ARM-OfFI 004635 3M's TSCA 8(e) FLUOROCHEMICAL SUBMISSIONS POCKET NOS. 8EHQ-*** *-0373/0374 8EHQ-****-0394 8EHQ-****-6006 8EHQ-****-6012 888EEEHHHQQQ---************---666000111568 8EHQ-****-6019 8EHQ-****-6023 88EEHHQQ--********--I84652946 GQ436 3M's TSCA 8(e) FLUOROCHEMICAL SUBMISSIONS Docket 8EHQ-****-373/374 SORTED by SUBMITTAL DATE DATE SUBMITTED (Date I-oggedAa HPA)ltcneil U> 11/19/80 8EHQ-1180-0373 S (11/24/80) 11/19/80 (11/24/80) 8EHQ-1180-0374S 2/20/81 (2/26/81) 2/20/81 (2/26/81) 8EHQ-0281-0374S 8EHQ-0281-0373S N-ethyl perfluoroctylsulfonamido ethanol Preliminary information from an ongoing teratology study N-ethyl perfluoroheptylsulfonamido ethanol FC-95 & FC-99 Potassium salt of perfluoro alkyl sulfonates Perfluoroalkyl Mixtures (FC95) Preliminary information from an ongoing teratology study 3M Technical Report regarding presence of fluorochemicals in the blood of some of 3M's plant employees.

Attachments to Letter to C.

Corning Hazleton Inc.

AR2X-05X BIOSEARCH, INC. p.o. box 8598 Philadelphia, Pennsylvania 19101 t el ephone: (215) 848-4499 Submitted to: Materi al : Sample Received: Date o f Report: T e s t: Object of Test: Procedure: R e s u lts : Conclus io n: 3M Company 3M Center S t.

Afc-o1 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, FC-109-X or R1904.

Internal Correspondence cc: R.

/ H U U -05 TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE________________________________________________ Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC116, FC-126, FC-169, FC-143 or as the major component of FC1015.

AfL ASL6 - 07A 3 ACUTE TO XIC ITY 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-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

V j-R _ O l S NITRIFICATION INHIBITION TEST SUBSTANCE______________________________________ Identity: Mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CF-X or FC-203CF. (1-Octanesulfonic acid) (CAS # 2795-39-3).

A A J2 .A 6 _ 0 2 X 3 ACUTE TOXICITY 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-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR&A6 _ lA & r T elomer Research Program 1200 South Hayes Street Arlington, Virginia 22202-5050 Tet (703)413-1100 d. 5264 Fac (703)4136111 DAiK iN ASAHI LASS COMPANY Clariant February 14, 2003 Mary F.