BACK TO MAIN SELECTED FLUOROCHEMICALS IN THE DECATUR, ALABAMA AREA Preparedfor: 3M St.

3M Manufacturing Facilities Analysis of Alfalfa Harvested from 3M Cordova, Illinois Plant Facility BACK TO MAIN Executive Summary 3M Environmental Laboratory June 21, 2001 In the fall of 2000, samples of alfalfa being grown on the 3M Cordova Plant (Cordova, Illinois) property were collected by plant personnel.

BACK TO MAIN ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE_____________________ Identity: Decafluoro(pentafluoroethyl)cyclohexanesulfonate, DEA salt; may be referred to as CS-2070.

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BACK TO MAIN TOXICITY TO AQUATIC PLANTS (Freshwater alga, Anabaena flos-aquae) TEST SUBSTANCE______________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (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: Sample from 3M production lot number 217.

BACK TO MAIN 3M Medical Department Study: T-6295.10 Analytical Report: FACT TOX-099 LRN-U2400 Study Title Oral (Stomach Tube) Developmental Toxicity Study of PFOS in Rabbits Analytical Laboratory Report Title Determination of the Concentration of Potassium Perfluorooctanesulfonate (PFOS) Fluorochemical in Rabbit Liver and Serum Specimens Data Requirement Not Applicable Author 3M Environmental Laboratory Analytical Phase Completion Date at signing Performing Laboratories Liver and Serum Extractions Liver and Serum Analyses Pace Analytical Services, Inc.

TSCA SANITIZED P-1 filili- 5% 33 CHARLES RIVER LABORATORIES (M in k a !

Quality Assurance Project Plan M ulti-City Study Sampling Task (N1Q0672) R226-0077 Amendment 1 to Revision No. : 1 Effective Date: Junel6, 1999 Page 1 o f3 Amendment 1 to the S j 'S S Quality Assurance Project Plan and Associated SOP's for Empirical Human Exposure Assessment Multi-City Study Sampling Task To (Confidential) June 16,1999 Prepared by Battelle 397 Washington Street Duxbury, MA 02332 (781) 934-0571 APPROVALS Donald Gunster Sampling Task Leader Rosanna Buhl Battelle Sampling Task QA Officer -- Marcia Nishioka ' Battelle Project Manager ---- Date Date .7/ .y ?

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m Z 'O ift Pathology Associates International A Company of Science Applications International Corporation SECOND DRAFT CELL PROLIFERATION REPORT 104-WEEK DIETARY CHRONIC TOXICITY AND CARCINOGENICITY STUDY W ITH PERFLUOROOCTANE SULFONIC ACID POTASSIUM SALT (PFOS;T-6295) IN RATS COVANCE STUDY NUMBER 6329-183 PREPARED FOR: 3M TOXICOLOGY SERVICES BUILDING 220-2E-02, 3M CENTER ST.

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\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.

A R ^ r O 40| ACUTE TOXICITY TO FISH 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, or FC-109-X.

CAS Number 1691-99-2 3M Company M SLAGjQ g/ Voluntary Use and Exposure Information Profile N-Ethylperfluorooctylsulfonamido ethanol I.

3M Specialty Materials 3M Center St.