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STATE OF MINNESOTA COUNTY OF HENNEPIN " 'L 9` F i l if 1 Mme-I: ~v U Mgy'i T" 7: 5 DISTRICT COURT FOURTH JUDICIAL DISTRICT State of Minnesota, by its Aflofl`gfiuw ' Lori Swanson, its Commissioner of Pollution Control, Paul Aasen, and its Commissioner of Natural Resources, Tom Landwehr, Case Type: Other Civil Civil File No. 27-CV-10-28862 Judge Margaret A.

STATE OF MINNESOTA COUNTY OF HENNEPIN State of Minnesota, by its Attorney General, Lori Swanson, its Commissioner of Pollution Control, Paul Aasen, and its Commissioner of Natural Resources, Tom Landwehr, Plaintiff, vs. 3M Company, Defendant

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22661177..00000011 E`E2xx6hh1iibb7iitt 2617 State of Minnesota v. 3M Co., Court File No. 27-CV-10-28862 STUDY SUMMARY FOR WORK PERFORMED DURING 1977-1979 TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4.4,5,5.6,6,7.7,88,8- heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The test substance is a white powder of uncharacterized purity.

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