ATTACHMENT TO LETTER TO C.

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BACK TO MAIN DESIGN AND STRUCTURE OF MULTI-CITY STUDY submitted to 3M Environmental Laboratory 935 Bush Avenue St.

COVAH^ THE DEVELOPMENT SERVICES COMPANY Sponsors: APME Ad-Hoc APFO Toxicology Working Group FINAL REPORT Study Title: 26-Week Capsule Toxicity Study with Ammonium Perfluorooctanoate (APFO) in Cynomolgus Monkeys Author: Peter J.

Aim G-O O & S Centre Analytical Laboratories, Inc. 3048 Research Drive Phone: (814) 231-8032 State College, PA 16801 Fax: (814) 231-1253 or (814) 231-1580 Analytical Report Fluorochemical Characterization of Drinking Water Samples Decatur, Alabama (W1979) Centre Analytical Laboratory Report No. 023-007B Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environmental Laboratory Contact Kent R.

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HAZLETON l a b o r a t o r ie s AMERICA, in c .

C O V /H H > THE DEVELOPMENT SERVICES COMPANY Sponsor: 3M St.

ARW.-03N5 BOILING POINT TEST SUBSTANCE_____________________________________________________ Identity: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE Alcohol, FC-10, or FM-3422. (1-Octanesulfonamide, Nethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2hydroxyethyl)-, CAS # 1691-99-2) Remarks: Material is an off-white, waxy solid.

CO RN ING Hazleton MUTAGENICITY TEST WITH T-6564 IN THE SALMONELLA - ESCHERICHIA COI//MAMMALIAN-MICROSOME REVERSE MUTATION ASSAY WITH A CONFIRMATORY ASSAY FINAL REPORT AUTHOR Timothy E.

Internal Correspondence cc: James Boyd - Chemolite 116-1 Eileen Fasbender - 116-1 F.

Internal Correspondence *7ARlTJo-OHtH oaJ To: D.

/)R Z X 6 -0 I MICROBIOS MICROTOX TOXICITY TEST TEST SUBSTANCE_______________________________________________ Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC-116, FC-126, FC-169, or FC-143.

/(o/2-c> e ^ `l 4-ro**-' Ac Attn: Bill Weppner and Dan Hakes, 3M fiHAS.6 _ 0 6 5 3 Dear Bill and Dan, I found today's phone call useful in helping to sharpen and clarify some of our priority needs for submission of test data in 3M's possession or control on the perfluorochemicals as discussed in my email message of April 7, 2000.