Submitted to: BIOSEARCH, INC.

A R r ) & -o & 5 FINAL REPORT PROTOCOL 418-013 ORAL (GAVAGE) PHARMACOKINETIC STUDY OF PFOS IN RATS SPONSOR'S STUDY NUMBER: T-6295.12 FINAL REPORT DATE: 24 JUNE 1999 00780 PROTOCOL 418-013 ORAL (GAVAGE) PHARMACOKINETIC STUDY OF PFOS IN RATS SPONSOR'S STUDY NUMBER: T-6295.12 TABLE OF CONTENTS SUBJECT I.

1UL&.2.G - 6bQ If fl L_ Barbara Leczynski 05/05/2000 03:37 PM To: Karen Lannon/DC/USEPA/US@EPA, Mary Dominiak/DC/USEPA/US@EPA cc: Subject: followup to perfluorochemicals meeting on April 28 -------------------------Forwarded by Barbara Leczynski/DC/USEPA/US on 05/05/2000 03:31 PM Charles Auer ; 05/05/2000 12:03 PM ro om~ov i JHS- -o zx ro cn CO <=>za ~ ~~ oo om --rn O pq OO To: dchakes1@mmm.com cc: bob.sussman@lw.com, Oscar Hernandez/DC/USEPA/US@EPA, Neil Patel/DC/USEPA/US@EPA, Robert Perlis/DC/USEPA/US@EPA, Barbara Leczynski/DC/USEPA/US@EPA Subject: followup to perfluorochemicals meeting on April 28 Dear Bill and Dan, 3M, We found the meeting very helpful in furthering our understanding of the situation with regard to PFOS and other perfluorochemicals.

AP.&26 _ oG6 PFOA Acute Toxicity - X 000837 I?

y \ / U U . 06SI Life Cycle Waste Stream Estimates \j\JW August 2000 Ac3eChnMytattciartlmacleechadtWened"ruaiSfizssauetecalftanuSonrntediraxneetegaescmdtauinmtPEidevasretstfeiulmsuptuhoapmertleoymfscl"cuha,hroeydamriaonoitccefhfadaaelcsmAri:elpiipctUrioaiel.lrsSt2c.pa1oRnr,nede2tpel0faenr0raot0esmod.efbETppyrshootetBidemonauatbtctitjteaeellucl-eswtaivM1age9sete9.eom7fsoPtthrraeiiraastlmw1In:sosfrLtrkioitfuwmet-aebsototh huueEoFsonnifstrwdatiwsimvetme,aravatsaoiatetltpeeakrees,bescrin3auailMnitstwtotsytorauhhmospeeatfpxeseralpreyimnepmaarcnoiilpnhedrylitantemeiricmcnenieazfdefllaonaeutdrctciseaioeteldtnnicartgo.ismweiingnsSaseneeseaaeitrcsnfervuoidicanrnstaet3gdirnsvM,ejteuaatmh,smdmewgpaavmrnaoneorurueptslfunfotaoamtcrcfsctta3teurosusMerefr.iltinieaIn'egnsnsgsspptauolhrrormnoeoecdcpay1uuette9siiscaeoo9strd7nnssissmtdsseaiauupwnlbeberaoossstreuovedfvtqeistegtmuhhhrueeiaeeprnlnetgrpsteestrotsnooapegn1err9dcaa9ttmhsi7o.a,.ns pmcsrceptfmTsFiherntuuoxhrrihouseoonrlnpuoteumfcrldeacectyoeelhorwlulcttennclmuuhsltcylautyaaesryetrssetlsidssdsadeehvtsi.isaonerdssnode.todfbPawetTsspwleh"igttFymexohsruPahtrsOurepaehdatoFifiagscsecdaSilwsOmeeu,cgrhtatisuoopeeSttmsi,iihmesrqmuhttoorPtseeauloswunupdtcqFntiticlhovoamutatOoabt.hrealsiuthfeytaSvelmTiareysvotsraefnheoneiphietlosscstehletoarld,h(asienhysmitsn.ealonhrat,)nssepreevpfTt"rodlPsrchbbereu.hoiteoFieipsaomsiodlbleOsfrio"rtudenmetruohPgeSeceesiccarFniipstgenchnhtaonoOcraaaeadntaodtrnhliSmrdedt"nmidtyestfwhaadiesrpefprtecrfeeeciqoieeeialclortnwceursamleaebnsiidstitdtnedeetvaeaii-tmsituonsdaotcagd.eepanglsaeheecrdlPrsscgittanooeFabhhcoromtp"ldraaOasanseef"nedtlpaSralwCgtiasPotikhs.iisstruF8imneiesaulondRFsOltdmdsaonde1paet.Ssofshpthlq7soiwiaetnuououSafiItnnoemrntienn0tovedhnsds2cppalete.udeyaoiltroprllteiszofmIfogonrslhenodtuoencphypnuttsoerflhoedhtaiceaesrhberototnctmceoaaeettctiaas,tonldlnahsyiyrlreynsibseyisaenasntumoinsdcoacsmtoxiyeethhisphPaycnfg,parnealFPtrotttaadlhiOFsrdttodeteheOuunSapecdtSoyoityo.irfnatnre 3 Final Report Sulfonated Perfluorochemicals: U.S.

A R & A & - 0700 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE __________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95 or as a component of FC-201AF. (1Octanesulfonic acid) (CAS # 2795-39-3).

M 3 2 6 _ 0X37 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-600. (1-Octanesulfonic 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: The 3M production lot number was Belgium 2367.

Attachments to Letter to C.

AR226-0980 has actually been processed as 8EHQ-0101-0373 but is included here in FYI-0101-1378 as well as it was received as an attachment to this FYI.

qfifj S CDWMT 7-11 A TECHNICAL REPORT SUMMARY ORIGINALTO: TECHNICAL COMMUNICATIONS CENTER - 201-2CN , important -- I f report sprinted on both sides o f paper, send two copies to TCC

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AR2.A6 _ //> OCT 2 5 202 THIRD QUARTER 2002 SURFACE WATER AND GROUNDWATER MONITORING REPORT FOR WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS WASHINGTON, WV Date: October 2002 Project No.: D6WW7423.01 18983635.20000 A CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 oo CONTAIN NO CBI 000163 Surface water And Groundwater Monitoring Report Table of Contents TABLE OF CONTENTS 1.0 Introduction................................................................................................................... 1 2.0 C-8 Analytical Reporting............................................................................................. 2 3.0 Washington WorksFacility.......................................................................................... 3 4.0 Local Landfill................................................................................................................4 5.0 Letart Landfill...............................................................................................................5 6.0 Dry Run Landfill.......................................................................................................... 6 7.0 References..................................................................................................................... 7 Table 1.0 Table 1.1A Table 1.1B Table 2.0 Table 2.1A Table 2.

3M Medical Department Corporate Toxicology 3M Center, Building 220-2E-02 St.

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-- 1 3 6 /^ A SURVEY OF SELECTED FLUOROCHEMICALS IN THE DECATUR ALABAMA AREA 2002 SAMPLING Preparedfor: 3M St.