: str I SKaatrhriiPn.riRseee PhD.

3M Company EPI-0027 Page 1 of 20 Final Report Epidemiology, 220-6W-08 Medical Department 3M Company St.

qeu6-3g15 Studies on the Toxicological and Environmental Properties of PFBA as of Julv 2008 I.

-~-----~-~~--~-

A R226 oo2y Attachments to April 21, 2000 letter to C.

ARY26-0063 | DESIGN AND STRUCTURE OF MULTI-CITY STUDY 1 | submitted to | | 3M Environmental Laboratory I | 935 Bush Avenue St.

Attachments to Letter to C.

cond EE ii N cerApp RsoelsnrengeasA.nsBeasoisrne TAFT, STETT'NIUS & HOLLISTER LLP 425WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 aol Fe --es--se--s November 6, 2002 a, AR226 -- 1169 I.

A Qo abort Buck <RebsrC.EECK@USA duzont coms on01/15/2003 09:24:45AM T2o2: MStaerpyhDeonmHinKosrkzienDiGoUwsSkEiP<SAtUeSp@hEenPHA,KooprpLznecinco@wepsekmsil@edUuppaSognAotvcom>, smyihe@ranordg Subject: TRP Study Reports:Submis0sAiR-o22n6 " MUZasEx,AysaE.sntv,iDroMomaniimnleinatCkaoldePr7o4t0eScHtion Agency W1a2s0h0inPgetnonns,ylvOCania20A4v6e0nue, NH Fron : Bob Buck, DuPont Subject : TRP Study Reports : Submission to AR-226 oGTneipoberetthasolnffosoifnwotArhdeeminTcieolsnotdnrueacrttiedvReebsyeRaerctchoherdTPRr2E2o6g.raarenThs(euTsbRe?

.

vo NOTE TO FILE - OPPTS 50639 AR 226 _ 0946 Vy DATE: October 23, 2000 FROM: Karen Lannon SUBJECT: Revised PFOS Hazard Assessment ---- e-- ee ----re-------- by these changes.

coma cu aL mgomn mres SeEl E Ress er seirnogsienro 50p.

AR226-2209 ^ Roger J Zipfel 11/02/2001 04:23 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPont@DuPont Info on C-8 density Debbie, attached is the msds for C-8 in the powder form.

AR226-2324 / Charles J Zarzecki 04/03/2003 01:34PM To: cc: Subject: Catherine A Barton/AE/DuPont Re: Beychok Article Q Cathie, I think they are really not 2separate issues- Part of the work is to look at future (raiment issues, and part of the work is to develop the required input parameters for c8 for the TOXCHEM model, which will be used to estimate c8 emissions from the wastewater treatment tanks.

.