Document rpE7qDd1Bdy4qajvOp7p587d7

p. 1 3M General Offices 3M Center St . Paul . MN 55144-1(N10 G~ l 733 1 1 111 July 18, 2007 A&Q.2( Via Hand Delive ry 3M Document Control Offic e Docket AR-22 6 EPA East Building, Room 6428 1201 Constitution Ave., N.W. Washington, DC 20460 Attention : OPPT Docket No . AR-226 (Mary Dominiak - Room 4410) Re: Information on Perfluorooctane Sulfonate, Perfluorooctanoic Acid, and Related Compounds Dear Ms . Dominiak : This continues 3M's voluntary submissions of data on perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and related compounds . We are enclosing paper copies of the following environmental studies, along with a robust summary of each study : "PFOS: A 96-Hour Static-Renewal Acute Toxicity Test with the Spring Peeper Tadpole (Pseudacris crucifer)." Wildlife International, Ltd. Final report, April 12, ir 2007 . "PFOS : A 96-Hour Static-Renewal Acute Toxicity Test with Hyalella azteca ." Wildlife International, Ltd . Final report, March 29, 2007 . "PFOS : A 96-Hour Static-Renewal Acute Toxicity Test with Lumbriculus variegatus ." Wildlife Inte rnational, Ltd . Final report, March 15, 2007 . "PFOA : A 96-Hour Static-Renewal Acute Toxicity Test with Chrinomus tentans ." Wildlife International, Ltd. Amended final report, March 8, 2007 . Please feel free to contact me with any questions . Very truly yours, Michael A. *toro Director of Environmental Health Safety and Regulatory Affairs 3M Center, Building 236-I B-1 0 : : - St. Paul, MN 55144 651-733-6374 (phone) 651-733-1958 (fax ) Enclosure s E-mail: masantoro@mmm .com cc: Mr. Charles Auer (w/o attachments) Dr. Oscar Hernandez (w/o attachments) Dr. Jennifer Seed (w/o attachments) CONTAINS NO C4I J