Document 6Rj6qaev4pvm7Qn8nzxbdkjRd

ol +25" 00(TE) 14:28 vor e ECCrponmt.e n . - ; C~oorrppo~rra~teeHHe~aallt~hh PhyP~hylsei~cs Corporate ~nd~strial ~ygie~e ~ Krgonomi~ Corpo~ze Occup'~tionai Medicine Corporate Tox[col~p' 33'i Medical Depar~m,e~ TTEELL::220022 449966 99006677 33MMCCeernv~eern, fBiuuiillddii~ngg 222200.-22E6-0022 B PO Box 33220, Sl BI e S~. PauL MN 55133-3220 6517331[10 P.002 3M 0 Susi . May 3, 2000 Fa~imile on srt Dr. Jenini[e[" Seed oBesE 202-260-1279 USEPA Headquarters Ariel gfoa Building A. 1200 Pennsylvania Avenue, N. W. Cid Washington, DC 20460 Ste RAHABA Re: Serum measurements for Argus Studies 418-013 (through lactation), and 418-015 (during gesatation) -- Dear Jennit'~r:, SR A HSA I am including in this fax the two sets of serum perfluorooctauesulfonate measurements fi'om the following ne two sradies: np m-- Oral (Garage) Pharmacokinetic P,~covery Stady of PFOS in Rats, Argus Laboratories Protocol No. i 418-.0 i 5, 3M Re ~erenee No. T-6295. ] 4, Advanced ~gloanalytleal,.~eru~ces,.,eludy No. FACT- TOX-Ill, Str tr tia LASER Ce SOARS Oral (Garage) Pharmacokinefie Study of PFOS in Pats, Argus Laboratories Pro[ocol No. 418-013, 3M I geferenc~ No. T-629_~.12, Adpaneed ~ioanalytical Services St~cdy No. FACT-TOX-IIO. Tomar a brinAeT The informna6on which I have inludd relates to the onaly~ica[ ~tudics indicated above in bum itali, . e ET m C i pe y Sot a luoludod a~e page~ I0-19 of F'ACT-TOX-III and pages 13-22 of FACT-TOX-! 10. 3M has previously SA p ey . sent the in-Life reports aa~ protocols for &e aaalk~i~al phase to the atten~on of Dr. H*raaadcz. I would be happy ~o meet with yOa and your EPA collaagues and consultan~ 1o prvvide whatever assistance you may desire ia un~lerstanding the ~oxiological information thaz is being provided. PPlleraasseeccoonnttaacctt mmeewwitithhaannyyqquue~ststiloonnssoorriiff yyoouuwwoouullddlilikkee t~oao arrranrgeaaamnmeeetgeitinnegg.. Sincerely, ETL John L, Burcnhoff, Ph.D., IH, DABT Ss Senior Laboratory Manager P Crr Corporate Toxiolo~ (651) 73%1962 11667799..00000011 Exhibit 1679 er 3MA00254228