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LSL6- 0 6 lj- PFOS Medical Surveillance/Epi - t - 000023 Internal Correspondence August 2000 Memo to File re: OUS pooled samples Pursuant to a review of my file, there are raw data for several other pooled human sera sample results for PFOS dating from 1999.

AR N-Et FOSE alcohol IAcute Toxicity - 0002S8 International Research and Development Corporation SPONSOR: TEST MATERIAL: SUBJECT: 3M Company FM-3422 Acute Oral Toxicity (LD,n) Study in Rats.

A fL A Z G ACUTE TOXICITY TO FISH (GOLDEN ORFE) 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).

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4R 2.2.G _ n o r 3M Lifetime Drinking Water Health Advisory for Perfluorooctanesulfonate Revision Date: April 19, 2002 Supercedes: July 7,1999 This document establishes a Lifetime Drinking Water Health Advisory (DWHA) o f 4 pg/L (ppb) for perfluorooctanesulfonate (PFOS).

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