Document m7Kkq00nzavj270OZ3goEyLO

C L wef e Spo e Y aM Comer m FIL- 0000-137, 651733 100 re. ARR26 - 0594 om 5 3M Contain NO CBI June 8,2000 ECan DiCrheecmtiocarl Control Division OUfnfiitceedoSftaPtoelsluEtnivoinrPornemveennttailonPraontdecTtoixoincAsgency 4R0o1oMm 4S0tr3eeEta,sStoTuotwhewers(tMail Code 7405) Washington, D.C. 20460 0 FYI-28-001378 >907) 9077 YH Re: InformationofPerfluorooctanoic Acid & Sa--lUtEIsP Form = @ neg S= = SSE= == sSs = = = Dear Charlie: p3eMrfilsuoernocolcotsainnogitchaecciodmapnldetsaeldts."Use and Exposure Information Profile" or "UEIP" for pWriotdhucreesspepcetrftlouoinrdouoscttrainaolihcyagciiedneanidnfsoarlmtsathiaosn,anyoiundsushtoruiladl hbyegiaewnairset tohnatsteaafcfhan3dMisplsaunptpothratted by a ecoxrppoosruartee aisnsduesstsrmiealnthyagnidecnoentgrroolu.p. Ex3poMsuriensduasrteriiadlenhtyigfiieedneanpdroagsrsaemssfeodcquusaelsitoantitvaelsyk-abnads/eodr `quaasnsieistsamteinvetlsy.incQluuadleittaatsikv-ebaassesdespsemresnontaslasreamppelrifnogrmfoerdcbeyrtaainn,insdpuesctirfiiacl fhlyguioernoicsth.emiQcuaalnstiatnadt/iovre ESonugricneeeorrianrgecaosntarmopllsinagr.e pTrhefeerrreesdu,lbtuofttpheresoansaslespsrmoetnecttsivseupepqouritpdmeecnitsimoansyobneeuxspeodsuorneacnonitnrtoelrim basis or when effective engineering control is not feasible. fIonrcaerstpaeicnifsiitcucatoimonpso,u3nMd ahnads hgaatshienrceldupdeerdstohnealpeirnsdousntarliailndhuysgtriieanlehayngdieanreead/astoauricnethmeonpirotfoilrei.ngThdaeta earmepal/osyouereceexspaomspulree rpeostuelnttsiaalnda/soprasrutorffaceexpwoispueresaamspsleessrmeesunlttsunadreerus3eMd'stoitnadrugsettriaarlcahsygwiietnhe vpirtohgrtahimsasnudbmairsesinoont.meInasouthreermseinttusatioofnsa,ctnueailtehemrplpeoryseoenaelxpsoasmuprlesi.ng Hdeatnacen,orthaeryeaa/rseounrotceidnactlaudheadve been collected for a specific chemical. "{Tshkeins]afmoprltehereasumlmtsonofiaunmysaailrt maonndittoor3iMn'gsarveolcuonmtaprayreedxptoostuhreeAgCuiGdIelHinTeL(EVG-)ToWfA o0.1fm0g.0/1m3mg/m3 (hmoiulrlitgirmaem-sweoifgfhltueodraovcehrenaigcea(lTpWerA)cubpiecrsmoentalerbroefaatih)infgorzotnhee aecxipdosaunrdescohdoisuemnstaolt.miTnhiemiEzGe is an 8potential for uptake. Page 2 Dr. Charles Auer Similar to the industrial hygiene program, each 3M facility that produces fluorochemicals has one: oernvmiorroenmeennvtiarlonormgeanntiazlateinogn.ineTehrse oenn-vsiirtoenamnedntiaslalesnogisnuepeprosrtaessdibstytahecoprrpoocreastseeanngdindeievrissiwointhlevel calculations and emission estimates. The corporate environmental organization developsmethods for analyzing emissions. In addition to these resources, several teams were established in recent years to identify, characterize and reduce specific fluorochemical emissions from the `manufacturing sites. `While analytical methods have improved over time, large variability still exists for certain "`mAalttrhiocuegshalnidmictoemdpmoounnidtso,risnogddaattaa availab exists, le for most this report is emission and mostly ofa quali waste estimates taarteibveasneatduruep.on `process models and engineering calculations. Engineering calculations, however, have limitations with respect to fluorochemicals because fluorochemical losses were not always included in the analysisofeach intermediate step. sep. The accuracyofthe em emissions are difficult issions data submitted varies due to to measure due to quickly changing several process factors. Batch process conditions, venting pre system ssures and difficulty in isolating processes to take measurements. Additionally, the unique cchoamrpacotuenrdisst,icasnodftphheyssiecaclomchpeomuincdasl cdaautaseprtohpeermttioesbearheavneotdaifvfaeirleanbtlley from for all conventional intermediate reaction Please do not hesitate to contact me at 651-733-6374 should you have any questions. Very truly yours, Aodtiois Q1-Iigprn'' William A. Weppner, Ph.D. Director Environmental, Health, Safety and Regulatory Affairs 3M Specialty Material Markets Group 3M Center, Building 236-1B-10 St. Paul, MN 55144-1000 651/733-6374 RC SAA 651/733-1958 (fax) Attachments