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Attachments to Letter to C. Auer dated May 4, 2000 Perfluoroctane Sulfonate Studies Bibliography of Acute Toxicity Studies Not Submitted 1) Acute Oral Toxicity-Rats on Sample T-1389, Biosearch Inc., March 4, 1976 (FC95, Perfluorooctane Sulfonate potassium salt). 2) Acute Oral Toxicity-Rats on Sample T-1390, Biosearch Inc., March 4, 1976. [FC98] 3) Acute Oral Toxicity-Rats on Sample T-2297 CoC (Ammonium Perfluorooctane Sulfonate, FC-93 Solids), Biosearch, Inc. October 13, 1978. 4) Acute Oral Toxicity-Rats on Sample T-2275 CoC (FC-99 Old Formula, L-4299, NB 48490, which is 50 % of the Diethanolamine Salt of Perfluorooctane Sulfonate in water), Biosearch, Inc., September 25, 1978. 5) Primary Skin Irritation Test with T-2509CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 479EB0332, 3M Reference no. T-2509.4 (FC-99 New Formula, L-4509, 25 % Diethanolamine Salt of Perfluorooctane Sulfonate in water), June 28, 1979. 6) Acute Ocular Irritation Study with T-2509CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 479EB0333, 3M Reference no. T-2509.1 (FC-99 New Formula, L-4509, 25 % Diethanolamine Salt of Perfluorooctane Sulfonate in water), July 13, 1979. 7) Acute Inhalation Toxicity Study of T-2308 CoC in the Rat, Bio/dynamics, Inc., Project No. 78-7187, 3M Reference No. T-2308 (FC-98, Potassium Perfluoroethylcyclohexyl Sulfonate, presumed 100 %), April 12, 1979. 8) Acute Ocular Irritation Test with T-2960CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 0880EB0598, 3M Reference No. T-2960.2 (FC-90, L-4649, Diethanolamine Salt of Perfluoroethylcyclohexyl Sulfonate, 25 % in water), February 18, 1981. 9) Acute Dermal Toxicity Study with T-2960CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 0880AB0599, 3M Reference No. T-2960.1 (FC-90, L-4649, Diethanolamine Salt of Perfluoroethylcyclohexyl Sulfonate, 25 % in water), January 15, 1981. 10) Primary Skin Irritation Test with T-2960CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 0880EB0597, 3M Reference 004631 Attachments to Letter to C. Auer dated May 4, 2000 Perfluoroctane Sulfonate Studies No. T-2960.4 (FC-90, L-4649, Diethanolamine Salt of Perfluoroethylcyclohexyl Sulfonate, 25 % in water), January 15, 1981. 11) Acute Oral Toxicity Study with T-2960CoC in Albino Rabbits, Safety Evaluation Laboratory, Riker Laboratories, Inc., Experiment No. 0980AR0600, 3M Reference No. T-2960.3 (FC-90, L-4649, Diethanolamine Salt of Perfluoroethylcyclohexyl Sulfonate, 25 % in water), February 18, 1981. 12) Acute Oral Toxicity - Rats, Biosearch, Inc., 3M Reference No. T-2296 (FC-93, Ammonium Pefluorooctane Sulfonate, 25 % in 20 % Isopropyl Alcohol and 55 % Water), October 19, 1978. 004632