TestResults AR226-2118 r!

AR226-2489 DuPom Washington Works P.0-.Bos':2!

AR226-3166 ____________________ ____________________________ DuPont-4182 TRADE SECRET Study Title H-24159: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-4182 Author: Carol Finlay, B.A.

36a 2 ADDENDUM NUMBER 1 TO THE SECOND SEMIANNUAL PROGRESS REPORT FLUOROCHEMICAL (FC) SITE RELATED ENVIRONMENTAL ASSESSMENT PROGRAM 3M COTTAGE GROVE, MN FACILITY March 2006 Prepared for 3M Company fiy WESTON SOLUTIONS, INC.

3M tipp. 3M Center St.

Jean B.

P-1 Taft/ Taft Stettinius & Hollister LLP 425 W alnut Street.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245781 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 04/21/2006 Signature Name: Richard C.

if VsSb- V-. * 4 P R O l^ t4sa>_ M f.lt UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D C. 20460 DEC - 9 2002 OFFICE OF PREVENTION; PESTICIDES AND TOXIC SUBSTANCES Dear Interested Party: eMMdo2a7xnet50hoacfd0pierlnn3uicredme,hdrmadfaeayl,1nAadgu,1lndiootuD,nutrpwsag2foeerca,0acoshcv0ale.mtkeos2muTdlyu)ruwh.blelpmegeTesloaleruefhlrtai,l9eenafisc,omssaefo2nlitunpnfh0arsitoaue0tnreerllo2dtesarl(uuols(aPre6plfneFade7pqtnAehleueFeleixxSiemnRrscpc)etelteeoscu7rcrnsohds2mhutnueea8eremibsle5mcdmp4fiuiicrcr)acsioo.oasteameplpsTslsisoyh,otitosnaiwnhoesfpesfdhotfreetdifiorhrmcneuadehDafliuliescfpenciroicugpienuntenbuailcdmoeilblhfuinlisSbbecichmseoeitagoehcrfnindroec3"tidmmas1ifnnlii,eesaegc2watnsansh0runioel0efuftilfi2easeFfcNrcee.layetectnundhwttfiroeiovenstrUr,eieaycowasleoenveRan(eiurRaSeJsotg(Naeui6ofin"lUs7entutshNeaF(phorSr)eRysyNocedfino8r1Ufa,ri1ucR0aaln1)ilcly4oys,,n tpeeEaschuoasnanetrbrpdvaltmiNiibieeeerlsnoirosisstnnposseEh-mihufrCeoiabgttdenohshmhnsenoeettsistflatpdheietlodeacorfPdoedtrcrttnourkoihloetcageniitsutshateiecmlsoncrucuutIudeionbltmoonemfmtncmtohbskmirAeetamentrekertgon,auidOetnttOlnisegaPtoi.cPvmPmnpyAaPTraeiCTowllk-llac2ye-ieob2ne0nbclfe0g0teosedt02ihmtriet2h-neeli0-maesgn0a0tec,e0t4ttwhcncr4w3oaoete3.swnnmr.ETeoiwbYmcPhnmea.eAoeeltafunlhpdoydDteaoucset.

'rom 0#mfb j Reaiy an 10/04/2001 07 C2 PM rc a: Suoject Za*><J M Ruffc< Ag/DuPontigOuPont Rooeh F P'nchot/DEV'AE/D jPont@QuPont, M Ann Brici*y'ST8/0U3<i}DUP.

AR226-3340 ^0^1^ E.I.

PathologyAssociateslntemational A Company ofScienceApplicatioInnsternatioCnoarlporation May 30,2000 Dr.

3M ENVIRONMENTALLABORATORY PROJECT05-0210: INTERIMREPORT#20 Interim Report #20: Analysis of Water Samples from Northern Alabama Potable Water Systems, February 2006 Study Title ANALYSISOF PERFLUOROBUTANESULFO(PNFABTSE), PERFLUOROHEXANESULFONATE (PFHS), AND PERFLUOROOCTANESULFONATE(PFOS) IN WATER, SOIL, SEDIMENT, FISH, CLAMS, VEGETATION, SMALL MAMMALIVERAND SMALL MAMMALSERUM USING LC/MS/MS FOR THE 3M DECATURMONITORINGPROGRAM Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR 792 Author Susan T.

om Program Coed Lin Closed Landfill PogProgram Cod andl Closed Landfill Prose Program MPCA and 3M meeting regarding Perfluorochemicals (October 15, 2004) Se Acrmiin fo | Site Activity and Data Goal | Whig Coty oni | Qurtesy Motoring Dis 53provideda vsoT Washington County Landfill, Quarterly Monitoring Data. 3M provide data to evaluate removal LiF Grenwarmonwellsowere fi adcr otofvae t xyi Lake Elmo Ground water monitoring wells Were efficiency and cost of treating extracted Simpl for erorschmicls Api | pou w5r comply ihhe Heh sampled for perfluorochemicals in April ground water to comply with the Health 300kandom Tan 004.

\ seememan JGiesy@aol.com SA comma 03/26/2008 03:49 AM To wmgnanmisn To wkreagen@mmm.corn Wl WO cc JNewsted@entrix.com ikiPMehrle@entrix.com webcc Salary Subject Re: Entrix Consulting a mr pn I will forward the opportunities to you.