ACTIVATED SLUDGE RESPIRATION INHIBITION TEST * -z' TEST SUBSTANCE Identity: Periluorooctanesulfonate, DEA salt; may also be referred to as PFOS DEA salt, FC-99, or 3M Sample No. 2. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1), CAS # 70225-14-8) Remarks: Test sample is a mixture of the test substance in water (approximately 25% test substance and 75% water).

AR5.U-OH55 BIOSEARCH, INC. p.o. bo* 8598 Philadelphia, Pennsylvania 19101 telephone: (215) 848-4499 Submitted to: Material: Sample Received: Date of Report: Test: Object of Test: Procedure: ResuIts: Conclusion : 3M Company 3M Center St.

0 44t Repeat Application 28 Day Percutaneous Absorption Study with T-2618CoC in Albino Rabbits Experiment No.: Conducted At: Dates Conducted: Conducted By: 09790AB0485 Safety Evaluation Laboratory Riker Laboratories, Inc.

AK *26 - 0177 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-206 or L3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

M za.6 - 0 7 9 7 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE___________________________________________ Identity: Mixture containing Perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206A. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR036-O3& BIODEGRADATION TEST SUBSTANCE Identity: N-methylperfluorooctane sulfonamidoethanol; may also be referred to as 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-hydroxyethyl)-, CAS # 24448-09-7) Remarks: Material is an off-white, waxy solid.

AR226-1970 .

ARSL6- 0723* ACUTE TOXICITY TO FISH (RAINBOW TROUT) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).

Corporate Health Physics Corporate Occupational Medicine Corporate Product Responsibility Corporate Toxicology 3M Medical Department 3M Center, 220-2E-02 PO Box 33220 St.

Interoffice Correspondence V Subject : November 14, 1974 ire: H.

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SUBMITTED BY: PREPARED BY: APPROVED BY: ARm-0503 E G & G, Bionomics Aquatic Toxicology Laboratory 790 Main Street Wareham, Massachusetts June, 1978 Brenda F.

ftFU%-OHL BIOSEARCH, INC. p.o. box 8598 Philadelphia, Pennsylvania !

3M Report: Bioaccumulation Studies A R 2X -0351 j.w.

M A&6 - 0 ALGICIDAL ACTIVITY TEST SUBSTANCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).