Document 15vO4xyKYmw45QnomZgyyeNmq

C(CAASS NNuummbebre:r: w--" wo 227975-939-53 .-._..*3*CCo9ommp3apna,yn:y: 33MMCCoommppaannyy_,SSMMM MDD_CCoottttaaggeeGGrorovveeFFacaicliliittyy Chemical Name * CAS No. Potass um I~rfluorooctanesnlfonate 2795-39-3 PPaaggeell I| S B hy San VI. ON-SI'I'E WORKPLACE EXPOSURE This information will assist EPA in characterizing the an tuber of workers potemially exposed and the magnitude, frequency, and duration of potential exposure. When providing monitoring data, ensure that data is linked with worker activities described in question 2. Estimate the number of ~.orkers potentially exposed routinely to the subject chemical for each of the exposure duration times. Ira worker is involved in more fl~an one activity,, enter i only his!her most Wpical activi~' in the table, Don't count a worker more than once. The total number in the table should equal the total number of ~,orkers potentially exposed, Days/Year Hours/Day < 10 = 1 1 1 <~25 e Tse .25-1 12 ees 1-8 6 TTTT >8 1 O- 100 23 23 I (10-250 >250 LS Describe the routine worker activities to which fl~e workers in question I are exposed: ssaammpplliinngg,, rreemmoovvaalloofffifliltteerr ccaakkee,, aanndd ddrruummmmiinnggooff lliiqquuiiddss,, mmaannuuffaaccttuurree aann aarrttiiccllee,, eettec.. FFoorr tthheessee aaccttiivviittiieess,, ddeessccrriibbee tthhee pphhyyssiiccaall ssttaatteeoofftthhee ssuubbjjeecctt cchheemmiiccaall ((lliiqquuiidd,, ggaass,, ppaarrttiiccuullaattee,, oorr aerosol, etc.) and, if in a mixture, the chemical's concentration: The chemical (2795-39-3) is a light, flee-flowing powder. Initially, the material is a wet slurry (within a reactor) and is then transfcrrcd to drying equipment for final processing and packaging The above employees operate and maintain the drying equipment, collect quality `ssaammpplleess., aannddaallssooppaacckkaa.g~ec((bbyyggrraa.vviitt~y.'oorrbbyyhhaannddssccooooppiinngg))ddrryy'ppoowwddeerrffrroommtthheeddr~y'iinnRg e`quie pmeq ntiinu nttoodi drruummp ss,,pm paaililsse ., aannn ddccaat nnss.. 22771188..00000011 Exhibit 2718 3MA01657924 CCAASS NNuummbebre.r: 2(2p77o99t55a:-s33s99i:-u33m perfluoCCroooommcpptaaannnyye:.s-:ulf33oMMniCCcoo)mmpapnayn,y, SSMMMMDD CCoottttaaggee GGrroovvee FFaacciilliittyy _ PPaaggee 1122 (potassium perfluorooctane sulfonate) (Part Vi continued...) (Part VI continued... ) 3. sPPraroomvpviliddieengiinnmddeuuststhtrroiidaallahhnyydggiieeexnnpeeosmmuoroneniitstocoreriinnangrgiddoaamttao,,,niiifftaaovvraeaidill,aabb5ll,ec,, wwdeiitshtchraibbbreriietehffeddescspscercciripifptiitcioonwnooorfkfttehhrec acsacacltmtiiuvvpdiiltteiiineegssanppmyeeerrpftfehoororsrmdomneeaaddnldbbiyyedexttnhphteoeifsiiiunnerddreisivvssiicdudecuunhaaallarssisommaomonwinootinrtookirtereoerdrd'.es.dFa,Foemor.grep.pr, riodirvveaasscccocryyiibacceloonntshsesiecidudsreepirrtaeaytctiiioufoincnrs,,wbploelreekawaesierstdhdeooannnyott da submited 0 EPA. include any personal identifiers data submtttcd to EPA. such as a worker's name or social security number with any oSfedertyhienagttcaqcuhiepdmetanbtleanfodrpaaicrkmegoinnitgoaricntigvidtaetsa.. ThesePsaasmt pslaemsplwecrccolcloelclteicotnedanddurainnaglyospiesrhaatison uotfidliuz,eidng37e:qumimpmNuenctlaenodpopracfkiagrincgaascttievistiewsi.th therPaasrtavsiammeptilec,coIllCePctiofonraKn+d) or LC analysis has utilized 37-ram Nacleopore filter cassettes with either gravimetric, ICP (for K+), or LC LIM. Wipe sample data for th chemical docs exit and has indicated significant els of aualvsis. The current method is art OSHA Versatile S,'unpler (OVS) tube analyzed by LC/MS. Wipe sample data for thc chcmical does cxist and has indicated significant levels of deconsandmexpiosnureaconttroileoffornts. this material on surfaces in the production area. The results were used for focusing decontamination and exposure control efforts. fr fluoroshemical a the plant. Ars'sourcesamplerosultsandlorsurface wipesample There has bccn arcaisou~ ce air ,no~fitorin~ data and/or surface wil)c samplin~ data collected for fluorochemicals at the plant. Area/source sample results and/or surface wipe sample results are not inelt,dcd with this submittal becat, se they are not always representative of aemmpplolyeeeexexpopsousrueress. PPririoorrttoo19199999,. iairraannddssuurrffaacceessaammplpilinnggmmeetthhooddsswweerreeccoonnssiiddeerreeddttoobbee sesmeim-si-avlaildidaatteedd..OOnlnylyimntthheeppaasstt1122mmoonntthhsshhaavveesvaalliiddatteeddssaammpplliinnggaanndd aannaahlyttiiccaall memtehtohdoodloologgiieessbbsesennddeevvsellooppeedd ffoortthhiissgrroouupp ooffssuullffoonnaattceddFFCCss.. The sample results of any air monitoring are compared to 3M's voluntary exposure .~uideline (EG) of 0.1 m~4/m~ (milligrams of" fluorochcmical compound p~r cubic meter of air) for PFOS brsahingzoneexposureshosentominimizepotentialforuptake. homologues such as FC-95 The EG is m~ 8-hour time-weighted average (TWA) personal breathing zone exposure chosen to minimize potential for uptake. EEaacchh33MMppllaanntt tthhaattpprroodduucceessssuullffoonnaatteeddffulnoororocchhecmmicicaallshhaassaanniinndduustsrtriiaall hhyyggiicenniissttoonnssttaaffff and is supported by a corporate hldustfial hygicnc group 3M's industrial hygicnc program is identified and assessed qualitatively andor quantitatively. Qualative sssesmentrse based ou the concept of" task-based exposure assessmcnt and control. Exposures are identified and assessed qualitatively and!or quantitatively. Qualitative assessments are samplingfor certain, specific Auorochemicals andlorsauce of rea sampling. The results of performed by an industrial hygienist. Quantitative assessments include task-based personal sampliqg for ccrtai,1, specific fluo,ocllcmicals and/or source o, a,ca sampling The results of" tbc assessments support decisions on exposure control. Engineering controls are preferred. 22771188..00000022 I3MmAAo0t1e6s577e9225s bt|l. personal proloctivc equipment may bc used on an interim basis or ~.~hcn effective e engninegerinigccn oonntetrroolleitssnrnoottiffeka:nsaisibbg llee,. ost 8839 psn sotrsa CAS# 2795-39-3 (potassium perfluorooctane sulfonate) Personal Air Monitoring Results eg NS. Area/Job I en Classification Sample Type # of Minium Maximum Geometric Geometric Samples Concentration Concentration Mean Standard pm Production Unit: I| Chemical Process Operator i Partial Shift (Sample Time Tm 10 0.00013 mg/m3 40 mg/m3 =0.050 rag/m3 Deviation 64.407 Range: fi 7-125 minules) PPiiolott pPlaanntt: | Technician Partial Shift 1 0.45 mg/m3 0.45 mgim3 NA NA (Sample Time: 70 minutes) . PT ---------- 4. Briefly dcscribe the engineering controls used to minimize exposure to this chemical: An--------arimre-- `TThheedrdy~iinnggaannddppaacckkaaggiinnggaactcitvivititiieessaarree ccoonnttaaiinneeddw~i\tithhiinnssmmalalll--rroooomm encclloossuurreesswwiitthh negative pressure and filtered exhaust ventilation. Local exhaust may be present directly at thtpheeappocoiinnkttoaoffgpaickna.~gin.g, +. B datea tt olea 5. Briefly list the personal protective equipment your workers regularly wear to prevent exposure of this chemical: tno ts Employees working within the above small-room enclosures use airline respirators, chemicalprotective coveralls (Tvvek) boot covers, ~d neoprene aloves. Come sins sic oso, csp Commcnts: (This scction is available to clari~~ thc rcsponscs givcn. Attach additional pagcs ifdcsircd.) 22771188..00000033 svar 3MA01657926