Corporate Occupational Medicine 3M Center, Building 220-3W-05 St.

BACK TO MAIN i Attached are comments on the 3M Technical Report "Soil Thin Layer Chromatography - FC95, FC143, FM3422.

BIODEGRADATION (WARBURG) TEST SUBSTANCE Identity: rPeefrefrirueodrotoocatsanPeFsuOlSfAonAy,laFmCi-do1(2e8thoyrhaascetthaetem;ajmoarycoalmspoobneent of FC-127, FC-129, FC-109, or FC-109-X.

AR 286 -0296 SUMMARY FOR WORK PERFORMED FOR THE GERMAN GOVERNMENT AEXGTEINNCGYUIFSOHRINMGILFIOTAAMRYCTOEMCPHONUONLDOSGYFRAONMD MPURLOTCIPULREEMCOEMNPTAONNIEFSIRE TEST SUBSTANCE Identity: A mixture containing Perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-3017. (1Octanesulfonic acid) (CAS# 2795-39-3) Remarks: The 3M production lot number was not noted.

" v -\ i : 2618. 0800-373 FA<R-1/226-7009964 ORIGINAL oo Sell 2 ne EB) Bio/dynamics Inc.

MICROBIAL INHIBITION (DEHYDROGENASE TEST-SUBSTA ICE ACTIVITY TEST) Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-206 or L3243. (1-Octanesulfoniaccid)(CAS # 2795-39-3).

BACK TO MAIN Centre Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com ^P hone: (814) 231-8032 Fax: (814) 231-1253 or (814) 231-1580 Analytical Report Fluorochemical Characterization of Sediment and Sludge Samples Cleveland, TN (W1973) Centre Analytical Laboratory Report No. 023-014Q (Revision 1) Revision Date 3/27/01 Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environmental Laboratory Contact Kent R.

A R m -0138 International Research and Development Corporation r^ l SPONSOR: COMPOUND: SUBJECT: 3M Company Fluorad Fluorochemical Surfactant FC-95 90-Day Subacute Rhesus Monkey Toxicity Study.

M M 6 - 0175 BIODEGRADATION (BOD/COD) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-783. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR22-OSOM ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC116, FC-126, FC-169, orFC-143.

AR226-2860 Material Tested: , E.

I Centre Analytical Laboratories, Inc

BIOCONCENTRATION (DISTRIBUTION COEFFICIENT) TEST SUBSTANCE Identity:N-methylperfluorooctanseulfonamidoethanolm;ay alsobe referredtoas N-MEFOSE Alcohol,FC-790, or FM-3925. (1Octanesulfonamide,N-methyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-N-(2-hydroxyethyClA)S-,# 24448-09-7) Remarks: Materialisan off-whitew,axy solidofuncharacterizedpurity.

SOIL ADSORPTION TEST SUBSTANCE Identity:Perfluorooctanoiaccid,ammonium salt;may alsobe referredto as PFOA ammonium salt,Ammonium perfluorooctanoateP,FO, FC-116,FC-126,FC-169,orFC-143.

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