Document G24mMZ0M6qBME6my9jeE9ajr

@1132003 10:05 0y1/03 opie W DEP LEGAL SERVICES 915133010205 hese ilies E304 oz6 3738 ama Apa 9g | SOS @ ney 7012 McDCiovrikslieonAvoefnAei,rSoQuualEixtny TelepFhoanxe NNuurmsbbeerr::((330044))952266..33772319" West GDoonvweer Virginia Department of Environmental Protection StAepihraeneCRaTiivsmeSrenerreer March 13, 2003 CERTIFMIALE_D_ 7002 0860 0001 4581 3412 Paul J, Bossert Jr. Plant Manager DuPont Washington Works P.O. Box 1217 Parkersburg, WV 2610- 2-1217 Dear Mr. Bossent: A - : . RE: Addttional Obligations Notice E.I. DuPont de Nemours & Co., Inc. _ WGaWsRh-i2n0g0t1e-n0W1o9rks " Plant ID No. 107-00001 The West Virginia Department of Environmental Protection's Division of Air Qiumapllietmyen(tDaAtQi)onisohfetrheebpyropvriosviiodnianlgainratsiccreeteoniDnugPolnevte,l Woafs1h.i0nmgitcornogWroarmksp,erofctuhbeic mata (g/m?) ammonium perfluoraoctanaate (CB) concentration as developed by the C8 Assessment of Toxicity (CAT) Team pursuant to Atachment C of Consent Order GWR- 2001-019. `accessible The emissions by DuPont to the public. As stated in are the not to exceed the screening level in areas Consent Order, the air screening level aSdtaatpetsedEnbvyirtohnamCenAtTalTePraomtewcitlilobneAtgheenbcaysipsrofmarulcgoamtpelsia&nscteaunndtailrdsufcohr Gt8i.me as the United ~ Section XI (1.a.) of the Order requires DuPont to limit exposure of C8 to no more dtheatnertmhien1edgb/ym'mosdcerleienngi,n0g lNevoelm. orTehethDanAQ1.w0ilmlircerqougirreamDupePronctubtioclmimeitt eirts ienmaimssbiioennst,aairs `aasredaesfionuetdsibdye 4th0eCpFlaRntPfaertnc5e0.l1ine(eo).f nAamtboitehnetrwAiirseissguebnjeercatl1ly ccoonntsriodlleerdedactcoaisnsclbuyde all DuPont. Compliance shall accordance with Appendix be demonstrated by use of Air Dispersion Modeling in W to 40 GFR Part 1 (Guidelines an Air Quality Models). or site meteorology data (1986 or more recent calendar year), quantifiable stack-specific annualized C8 emission rates as and well the as most current and physical stack parameters. Vaadljuusetse"tdTohceaacDlceAonuQdnathrafyoseracironn2cd0rue0ca0tseesdtdacsakt-pasrcpekolchiiemfiiingcahrteymaminsodsdiecoolnnitsnrgodlaatanafaflaiycssisiesunmcoyif niCng8trheeempirfesisnseeinoptnoaswtiduvasering area and 1996 on-site metearological data provided by DuPont. The results of this 200/200m BDAIP ee ee 000310 LLVNIONID BaSL "Pro3hemathoy etnveiiroennmengt" 03/13/03 THU 10:04 (TI/RT No 80141 sozoteceIST ze coser/eo @132083 10:06 WU DEP LEGAL SERVICES 915133010205 : 01303 oslo BIO 928 3738 WV ATR QUALITY ozs oon Roos LeMtatrecrhto13,Pa2u0l0J3. Bosser, Jr. Page2 aenmailsyssiiosnIsndoifcCat8eatrheerreeaisllaocpaotteedntaimalafnogr DthuePovnartitoousexemciesesdiothnessotuarncdeasrdinifaamnanunanler wopheircahtianpgpraotamcahxeismtuhem upneirtmsiptteemdnicaipeadciatly,loewmaiblsesieomnispsaiiontnsl1e6ve3l-sE.11S,pe1c6ti3c-aEl2y6. awnhden242 could exceed the 1 pg/m? ground level screening standard. the aboIvnefirghetfeorfetnhceefdoorredgeorinhga,sthbeeerenpodrettienrgmmiencedhainnsiusffmiceisatnatbfloirsfhuetdurIen SCa8ctcioomnplX.i1a.ncoef daegmgornasgtartaet,itohnuss. gTihviengqauatrottearllfyorrespeovretrsapledciifffieerdenItn oSpeecrtaitoinngX.u1n.iwtsacsondteavienlionpgemdulatisptaen. edimsipsesrisoinonpomiondtse.liInngatrodeesrtfiomraDteAQcontcoebnetraabtlieontso mofanCi8toarrcooumnpdltihaencWeasthhironuggthonaiWr orks fwaiclillietlyi,miitniastiemnpeereadtiinvgattohamtaDkuePaahnyt arespsourmtpCt8ionmsitshsaitotnhseftoortaelaacmhoiunnditviodfuaelmisstsaciko.nsThwiesre arebloovaesetdheenCti8reslcyrfereonminsgelleevcetl.emission points, which could result in concentrations keepingThaernedfoRreep,orDtuiPnagn(tMsAhRa)llFsluabnmipturtsouDanAtQtofaGrWaRp-p2ro0v0a1l-a01Mo9niSteocrtiinogn, XRIellco"Arddditional Accotmipolnisa"nicneorwidtehrtthoeeCst8abslcirseheanipnrgaclteivceal.lly enforceable means of demonstrating basedProinorsttaockImsppelceimfeicnt2i0n0g0thcealMenRdRerpyleana,r aenmiisnistiiaolncdoamtpal,iwahniccehdienmcoonrsptorraattieosncosnhtalrlolte ecfofnitcrioelnsciypirnoccreesassiemsparsovweelmlenatssmordeiqufiireeddsbtyactkhecoanbfoigvuerartaifoenrsernecseudltoirndgerf.roCmoamdpdl-ioannce wuiptdhattheed Cp8rasccerseseniinnfogrlmeavtailonwilvliabe45dCetSeRr1m3inpeedrmbiytDaAppQliwciatthiionn(5s)0 tdoamyosdoiffyr/eucpeidvaitneg each cafhfaencgtaeds prreoqcueisrsedubniyt.CoTnhseenctomOprldeetre GrWevRi-s2e0d 0p1er-m0i1t9apsphallilcabtaiosnusbdmeiftitneidngtoopDerAaQtinonoallater than June 30, 2003. letter, DAQ' objectiva and thus Section is to Xill oifnctlhuedOeradlelrM,AwiRthrienqtuhierefamceinlittsy'ses4t5aCblSiRs3h0ed, pursuant to this Title V operating pdeermmointstvriaattihnegicndoimvpilduiaalnc4e5CfoSrRf1ut3urpoerompietrsa.tiTohnsusInavoplrvaicntgicCa8llyatenDfuoProcneta'bsleWamsehainnsgtoofn W4o5rCkSsA1fa3cilciotnyssthraulcltbioenoabntadimnoeddifbiycaitnicoonrppoerramtiitosn.of the MRR plan into DuPont's Team iAssdiDruaPctoendtaitscahwraornei,c tehxepopsrouvriesitoonatlhescpurbeleinc.ingHolweveevleers,taDbAliQshweildlbcyontdhuecCtAfTurther investigalian necessary to ipnrtostetchtetahpeplgiceanbelrlaitlypoufblwiocrkceulrseixdepotshuerfeacgiulitdy.elines for measures 200/c000) 000311 LIVNIONIO HSL 03/13/03 THC 10:04 (TX/RX NO 60141 SOZ0TCCTSTG 0TT Co/eT/0 ". 03/23/03 08:30 B04 926 3739 WY AIR QUALITY } @oos LaMtatrecrhto13,Pa2u0l0J3. Bosse, Jr. Page3 " =. a thres"hTohledAmmietrivcaalnusC(oTnLfVe)refanrceCBo.f GToLvVesmamreentguaildeIlnidnusetsrfioarl uHsygeibenyiisntdsushtarisaldehtyegiremniinsetds in making decisions ragarding safe levels af expasure to chemicals In the workplace. "The U.S. Occupational Safaty and Health Administration (OSHA) has not developed a Parmissible Emission Level (PEL) for C8. DAQ intends to seek information trom a variety of sources, including OSHA, the National Institute of Occupational Safety and HPeraolttehc,titohneAUg.eSn.cEynvInircoonnmneencttailonPrwaittahctthiiosniAsgsueen.cy, and the Ohio Environmental "Sincerely, `John A. Benedict Deputy Director aa a. 10073000) LIVIN oSL 000232 03/13/03 THU 10:04 (TI/RX NO 0141 S0Z0TRCCTSI@ cesT gosen/to