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Wildlife International, Ltd. " Project Number 4544-102 PFOS: A `WITH T96H-EHFOAUTRHSETAATDIMCIANCNUOTWE TOXICITY (Pimephales TEST promelas) ADDENDUM `WILDLIFE INTERNATIONAL, LTD.

BACK TO MAIN ACUTE ORAL TOXICITY TO TERRESTRIAL INVERTEBRATES (HONEY BEE) TEST SUBSTANCE Identity: Perfluorooctanesulfonate;may also be referredto as PFOS or FC-95. (1-0ctanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The 3M productionlot number was 217.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, N-EtFOSAA, FC-128 (acid form) or FC-129 acid.

BACK TO MAIN BIODEGRADATION STUDY REPORT The 18-Day Aerobic Biodegradation Study of Perfluorooctanesulfonyl-Based Chemistries PROJECT NUMBER 3M Project ID: Not Available Contract Analytical Project ID: CA097 STUDY DIRECTOR Cleston C.

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3M Specialty Materials February 13, 2003 3M Center St.

TL 3M General Offices Su oon rad mpgs genq- 0704- 15607 3M Certified Mail AL - 80S July 6, 2004 Document Processing Center OEUfPSfAitceEraoasftP-olRlouodomn6P4r2e8veAntttin:onSaencdtiToonx8i(cs) W1a2s0h0iPnegninosnylDvCani2a04A6v0e-n0u0e01NW RE: TprSoCtAci8v5e)maSteUrBiaSlTANTIAL RISK NOTICE ON: Dear Sirs: ItnauchreJdu,neM28,d2s0c0u4s,esdubsmoimsesisounpgplaermdeintnagltihnefosrmuatbion.testEnsucblsotsaendcepl(epsleesnedsee CD containing the supplemental report "Augmented acute (4-hour) inhalation toxicity study with T-7875 in rats."

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3M Specialy Miserils 3SStMhPCale,neMxN S144-1000 AR226--1215 RREFCTEICVERDI 3am Document Control Office Docket AR-226 37P120EP1A ECaosntstBiutiultdiionng,AvReo,oNm.W6.428 Washington, DC 20460 Phone: 202-564-8930 February 9,205 0sSrFeE8!

`EXY8eRESnEARCH "Fron Res. - 22671933 - Analytical Report a 3M Company Analysis of PFOA and PFOS in Water Samples from Cottage Grove - Municipality E04-0910 Exygen Report No.

IM 30p. = Stet ne. 3Enemas na rn ea A295 59 TH Certified Mail AR226-1953 April 29,2005 BEAQ05---/0 575 35 rico EPA East - Room 6428 Att: Section 8() Noemi sOffticeeofPollution Prevention and Toxics W1a2s0h0iPnegntnosnylDvCani2a04A6v0e-n0u0e01NW DRoEc:ket NTo.SC8AEHQ(E-)1S2U0P0-P1L48E3M7ENTAL SUBMISSION: Dear Sirs: FE) =2 22 -L r3eg zz 3= Septemberof2001 `IpneDrfelcueormoboecrtaonfes2u0l0f0o,ny3l Mflusourbimdiett(ePdOSaFd)r-abfatsreedpofrltuoofraochmeomrntiaclailtymasntuufdayoctfur3iMngemployees ata the above-referenced docket number.

AR226-2064 WASHINGTON WORKS INDUSTRIAL- HYGIENE REPORT FROM 1-Jan-1988 TO Sl-Oct-I'm AREAs FLUOROCARBONS - COPOLYMER8 Sl-Oct-lWl Page I CHEMICAL SAMPLE LOCATION ft;CONTROL C-8/FC-143 216 PERSONAL SAMPLE-WET FINISHING s DATEs ll-Apr-1988 NOTEBOOK; 31841,Pia5 EMPLOYEE 4K451E DURATIONS 0390 CONCs 0.116 MPB PERS CODEs SAMPLE TYPES P PERCENTAGE; El% C-8/FC-143 216 PERSONAL SAMPLE-WET FINISHING 8 DATE; lB-Apr-1988 NOTEBOOKS 31E41 ,P1S8 EMPLOYEE #04304 DURATION!

AR226-2096 r ^ ,Sample Date Range Concentration Range Aettoii Level Industrial Efygiene 1/106 laaise 100% Sample Dt Sample f Duration type Employee Name BTO: 09 TEFLON@ UW: 113 PIS- SHIFT MECHANIC (5BMO) 1/1QB6 22569 330 P 8136136 24210 360 P Pen.