interofficeCorrespondence 3 cc: H.E.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:Perfluorooctanoiaccid,ammonium salt;may also be referredto as PFOA ammonium salt,Ammonium perfluorooctanoateP,FO, FC116, FC-126, FC-169, or FC-143.

BACK TO MAIN CEntrE Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com (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. 023-014 0 (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.

IN VITRO MICROBIOLOGICAL MUTAGENICITY ASSAYS OF 3M COMPANY COMPOUNDS T-2247 CoC AND T-2248 CoC Final Report 5 September 1978 By.: Vincent F.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:PerfulorooctanesuIfonylmaido(ethyla)cetate;may alsobe referredtoas PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-1 09, or FC-109-X.

ACUTE TOXICITY TO FISH (RAINBOW TROUT) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component ofFC-206 or L3243. (1-Octanesulfoniacid)(CAS # 2795-39-3).

lo BIOSEARCH.

AR 226 -- 079/ ACUTE TOXICITY TO FISH (BLUEGILL SUNFISH) TEST SUBSTANCE Identity: ArefmeirxrteudretocaosntPaiFnOiSn,g pFeCr-f9l5u,oroorocatsanaescuolmfponoanteen,twhoficFhC-m2a0y6aolfsoL-be. 3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

BACK TO MAIN BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: Potassium Decafluoro(pentafluoroethyl)cyclohexanesulfonate may also be referred to as FC-98.

AR226-1977 ;M7 BEV.

28 Day Percutaneous Absorption Study with FC-129 in Albino Rabbits Experiment No.: Conducted At: Dates Conducted: Conducted By: Reviewed By: dc: M.

Submitted to: BIOSEARCH.

AR 826 -- 026 ACUTE TOXICITY TO FISH (FATHEADMINNOW) IESTSUBSTANCE ~~~ 0 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, 11,22,3,3,4,4,556,6,7,7,8,8,8heptadecafiuoro-, potassium salt, CAS #2795-39-3) Remarks: The 3M production lot number was not noted.

ACUTE TOXICITY TO FISH (BLUEGILL SUNFISH) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonawthei,ch may alsobe referretdoas PFOS, FC-95,or as a component ofFC-203. (1Octanesulfoniaccid)(CAS # 2795-39-3).

ACUTE TOXICITY TO AQUATIC INVERTEBRATES TEST SUBQ@TANCE (DAPHNIA MAGNA) Identity: A mixture containingperfluorooctanesulfonate,which may also be referredtoas PFOS, FC-95, or as a component ofFC-206 or L3243. (1-Octanesulfoniacid)(CAS # 2795-39-3).