y^e slsl& _ o z r i TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

- Olo^i ACUTE TO XICITY 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-3052. (1Octanesulfonic acid) (CAS # 2795-39-3).

M <256 _ 0 9 1 3 MICROBIOS MICROTOX TO XICITY TEST TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FX-3103. (1Octanesulfonic acid) (CAS # 2795-39-3).

A t 2 2 b - O '/ SOIL ADSORPTION - REVISED TEST SUBSTANCE_______________________________ _____________ Id e n tity : Perfluorooctanesulfonate; may also be referred to as PFOS or FC -95. (1Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Rem arks: The test substance is a white powder.

3M Specialty Materials f January 3, 2003 3M Center St.

A R 2 .6 - \ 0 H - M iW> CCAS t r,n f ntrr jo r .U m lyaii .Sciences Analytical Report William P.

C S.

September 10, 2003 Document Control Office (D CO ) Office of Pollution Prevention and To xics (O P P T ) US Environmental Protection Agency EP A East, Room 6428 1201 Constitution Avenue, NW Washington, DC 20460 A ISIi 1 ^ ^ 1S a M .

71 pp Ann K.

R*082 REV. i*<J cstaiushio hoi E. [ . du Pont de;ncNorpeo*mato( ours & C o m pany Wilm ington.

Precise Research.

3M Medical Department Study: T-6295.7 Report No.

3M Specialty Materials 3M Center St.

Northwest Bioanalytical Study No.

Benchm ark Doses for Liver Tumors in Sprague Dawley Rats fed Perfluorooctane Sulfonic Acid Potassium Salt (PFOS) David W.