Document 3eVzLkBk672k1V9wydGyRZ4KO

DuPont Legal 136, Anis. snot RECEIVE HEY23 jit gi se Ar2z2-177 May 25, 2004 Mary Dominiak U.S. Environmental Protection Agency Office of Pollution Prevention and Toxics EPA East, Room 4410 ne 1201 Constitution Washington, DC Avenue, 20460 NW VIA OVERNIGHT MAIL Attention: Docket No. AR-226 and/or OPPT-2003-0012 Re: Submission of Air Data - DuPont Washington Works Facility Dear Mary: As discussed in various meetings with USEPA on monitoring around the DuPont `Washington Works facility in West Virginia (the Site), DuPont is in the process of conducting an Air Modeling Verification Study (the Study). The first partofthe Study, pertaining to air monitoring/modeling at the fencelineof the Site (Phase I), has been completed. The following data and information are attached with respect to the first part of this Study: 4 page document entitled Air Data (Attachment 1) this document provides comment on the Phase I work. Note that the Air Modeling Verification Study is not complete; therefore comments at this juncture represent only intermediate results. We are summarizing some ofthe observations to assist in understanding ofthe data being submitted with this letter. 000001  + ODfofciucemoefntPoClolnuttiroonlPOrfefviecnetion and Toxics May 25P,a2g0e024 9 analytical reports from Exygen Research, each entitled Air Sampling Fluorochemical Report (Attachme2n)t. dIinsatdrdiibtuitoino,n (DPuSPDo)ntofhaPsFuOnAdeirntaakmebnieanntotahierrateftfhoertSiatie.meTdhaitseevfaflourtatiisndgetshiegnpaerdtitcole size pverroivfiyd/eiedfwiniethintphuistslettotaeirr(dseepeoAstittaiconhmmeondtel3i,nAgn.alTythiecarlesRueltpsortot dfartoemfEorxythgiesnefRfeorsteaarrech entitled Study). FAluroerpoorcthedmoiccuamleCnhtairnagctreersiuzlatstifornoomfFtihletPearrtSiacmlpelSeisz;e Particle Size Distribution Distribution analysis is under review and will submitted to EPA upon its completion. oAfcEonpvyiroofnmtheinsteanltiPrreosteucbtmiiosnsiaonnd itshealOshoiboeiEnngviprroovnimdeendtatlo PtrhoetWecetsitonViArggeinnciya.Department Ifyou please need further clarification on the information contact me at the number provided above. and data presented with this letter, Very truly yours, Attachments Andrea V. Malinowski Counsel for E. 1. DuPont de Nemours and Company 000002 = + ODfofciucemoefnPtolClounttiroonlPOrfefviecnetion and Toxics May 25P,a2g0e034 ATTACHMENTS 1. Air Data -- DuPont Washington Works Site (4 pages) 2. TSahmepfloilnlgowFilnugoraorechbeomuincdalanRaelpyotritc:al reports from Exygen Research, all entitled Air Round I Report No. L0001277 Round 2 ~ Report No. L0001308 Round 4 Round 5 Report No. --Report No. L0001359 L0001400 Round 7 Report No. L0001444 Round 8 ~ Report No. L0001448 Round 9 ~ Report No. L0001508 Round Round 10 11 ~ -- Report Report No. No. L0001667 L0001668 Note that samples on November 17, were 2003, not analyzed for when the on-site Events 3 and 6. meteorological Event station 3 was conducted recorded 17 calm hadoeufrasulouttowfi2nd4shpoeuerds.vaTluheeoIfS1CSmeTt3ermopdeerlsewcoounld.d tBreeactatuhseesethceaslemdahtoaurasrebybeuisnigng ausseodppfoorsaedmtoodedlefianugltveirniffoircmaattiioonn.stuIdny,faacctt,uiatlidsartea,cowmhmeennpdoesdsibinlet,heshGouuilddelbieneusoend AacicruQruaatleiwtyheMnodneolmso(r4e0tChFanR6Pacratlm51h,oAuprpseoncdcuirx. WA)s athartesmuoldt,elthreesseulstasmaprleesmowsetre: nwohteannaitlywzaesd.deEtveernmtin6edwathsatatttheemmpatjeodrosnouDrecceesmobfePrF5O, 2A00i3n,thbeutmawnausfaacbtourrtiendg process were not operating that day. 3. BChoaurnacdtearniazlyattiicoanlofrFepiolrtterfrSoammpElxeysg;ePnarRteiscleearScihzeenDtiisttlreidbuFtliuoonroScthuemdiy~caRleport No. L0002178 000003