Document zQOawGwj60Y852RpoJoZM6wY7
fo.
CONFIDENTIAL
AR226-1307-4
DuPont Epidemiology Surveillance
Report
MORTALITY AND CANCER INCIDENCE SURVEILLANCE AT WASHINGTON WORKS
Requester: GeralAd. Ploeger
External Affairs/Litigation
Washington Works Judy Walrath, Ph.D. Senior Epidemiologist Haskell Laboratory
Central Research& Development
"Report Completion Date: 6/30/96
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CONFIDENTIAL
MORTALITY AND CANCER INCIDENCE SURVEILLANCE AT WASHINGTON WORKS
TABLE OF CONTENTS
INTERPRETATION OF EPIDEMIOLOGIC SURVEILLANCE DATA Sources of Surveillance Data Methods Tests of Statistical Significance Interpretation of Statistically Significant Results
CANCER INCIDENCE SURVEILLANCE - 1956-1992 Discussion and Recommendations Table 1. Observed/Expected Cancer Incidence Results for Male Employees Table 2. Observed/Expected Cancer Incidence Results for Female Employees
MORTALITY SURVEILLANCE - 1967-1993 Discussion and Recommendations Table 3. Observed/Expected Mortality Results for Male Employees Table 4. Observed/Expected Mortality Results for Female Employees
SUMMARY
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CONFIDENTIAL
INTERPRETATION OF EPIDEMIOLOGIC SURVEILLANCE DATA
Enclosed ara tables for Washington Works showing (1) cancer incidence surveillance
ft1rh8eo5m7nu1tm9hb5r6oeurtghohrfo1ou9bg8sh3e1ra9vme9od2ncagamsaoecnst/igvdeaecaettmihpvselo(eyOmeBpeSls)oyaiesnecdsopmaepnnadsri(oe2nd)emrtosor.tthaFleiontryuemsaubcrehvreiseplxelpcaienfccietcefcdraou(msEeX,P)
botababssleeerdivsoedndesttcohretihepetxipevexerpiteeecxnttcewedhoinfcuthmhbeseuermnstmiaorreficCzaoesmsepsta/hndeye.maatjhCosor(mfOpiBanSdri/inEsgXosP.n).is
made by the ratio of the
Accompanying each
`Sources of Surveillance Data
ipSnriintmchaeeriD1l9uy5Pb6oy,ndtciaCanagcnnecorsecerassReeegnsitstethrraeytd.oocTnchuArrcocauimgdohenn1tg98aa8nc,tdicvHaeesaeelmstphhlaIonvyseeuebrseaneicnnetrh(eeAp&oUrH.tS)e.dcaltraoeimtrhseecaRonerdgdiebsdytry
Foefemapctlahonycceeeerrtsia.fmicoSaintnegsceatch1ta9it8vae8c,ecmiopnmlspouyareanneycse.licfelBaieingmsisunrndaianntcgaeiacnrle1a9ib7me7si,nfirgleeugdissbetydrybtedonaaetsfaciecsrioaturariicenesdsoifwaedgrenecoseeassed
fCsiuaespntpcdleieramgRenengotisesedtdrbyayfdtCoearensrcenetoirtreRimenegcniltsutdoreryacRfaetseperosretmdpiflaogornymosmsesenudtbamtemirtomenidngabteyimopCnlodomuypaeaetnsoywrhephaoysssoeincsciaaonntsch.eerrTwthhaeasn
pension.
.
DtheeatDhusPtohnattMoocrctualriatymoRenggisatcrtyitvheaatnwdapseninsiitoianteedd ienm1p9l5o7y.eeDseianththseaUr.eS.idaenrteifrieecdotrhdreodugihn laimfeoinngsuermapnlceoyceleasimtsefrimliendbatyebdenweiftihcoiuatrpieenssoifondeacreeansoetdienmcpluldoeydeessi.nceDtehaetrhesitshnato oucnciufrorm mechanism for identification of these deaths.
Methods
Tisnpoeccididefetineccrfemoiran5n-edyeemxaoprretacagltieetdycnraauttemegbsoerfrioesrsD,ofugPceoansndetesre/dmaepnaldtohpysaeyferosorl(ltahcneldassptseann(ids.aie.ro,dnwiezaresgdefoarnoarmlosyrastliaaslr,iytcyr)ao,nlc),erare cwiodmepuitneciddefnorcaelamocrhtaclaiutsyeractaetsegaorreymsulhtoipwlnieidn btyhetehenccluomsueldattiavbelems.idT-yheeanr,ptohpeulCaotmiponanoyfegmepnldeoryeaensd(paanydroplelncsliaosnse,rosv,erwthheereenatpiprleicsatbuldey)pferroimode.acThheloscuatmioonf,thspeecpirfoicdfuocrtsaogvee,r all age groups is the expected numobfceasersordeaths.
nStuamnbdearrsdiaznedd aarnealbyasseesdaorne parcetfuearlrpeldabntecpoapuusleattihoenys.proInviidseolaagtee-dacdajsuesstwedheerxpeecatcecudrate
cpporopemuspleaanrttieeoddn.wdiIatnthatthahearsteeenaxonptaelacvytaseieldsa,dbleterh,ievpoerbdospfeorrrotvmieopdnradotipseotrirtinibcouitndiseownnocheficcoahrsomeocsrc/tuadrleitathtyrhaosnuagblhyyocsueatsutshaeereiesntire z
Company. Proportions can be misleading, however, as tis possible to have an unusual
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CONFIDENTIAL
dFiosrtreixbautmipolneo,f icf aaseplsa/ndteahtahssawiltohwoeurtdtehaetrhe rbaetiengfraonmyheeaxrctesdsisreaatseefotrhaannythsepercaitfeicincatuhese.
C(coommppaanryedastoatwhahtoloef,thteheenptriorpeoCrtoimopnaonfyd)eainthosrdferromthoatthperrocpoarutsieosnswofourladllbceaiunsfelasteaddd up
to 100 percent.
Tsaiobgsnteiefrsivtceawndhtalaytnhfderreoxmtph1ee.c0ot0be,sdwenreuvmeebtdeatrrosmeioxncpeceuctrthreeedpdrrbaotbyiaobcsihl(aiOntycBeSth/aaEltXotnPhe)e. gdTiifhvfieesnrepinrnoctbehaebbietltaibwtlyeeevsnadlitufhefeeris oSTtnbatttaihisetnitecwdaolf-lytraosimilgetndihfetiecPsato,nitsstisfaottinhsetpirpcorabolablbyaibsliiilgtinytiydfiivscatalrniutbeudteiifsiolcnie.tsssTahtsheawdneil0fl.fa1er0seuenscxeicneigssscthoeensstaiwrdoee-trdaeeidnloetdetde.st. Statistical significance is tested only ifeitherthe observed or expacted number of cases or deaths is four or more.
Interpretation of Statistically Significant Results
Tianghveeensdttaeistgiatgthinoeantpitlooanndtoe.fteaHrosmwtiaentvieestwrih,cealatlnhyeesrixgctnheiesfisecxamncateysesxaclmesaosysochocfatuverenbosecuccgauguresrseetdsofbtheeecnanvuiesreeodnomffoersnftouamrlethaenrd
Soriihgeirn,fascotcoirsoeacsosnoocmiiactesdtawtiutshoirngcerneeatsiecd
risks, such factors.
as
smoking,
diet,
alcohol,
ethnic
Csdtihaftafinesrtcieecnacalelsoiinngenaibmfoaiucytan1acc0ecoiosuutsnoettffaeotrve0a.r1sy0ta,1t0ios0ntieccoaslmhlpoyausrliigdsneiofxnipsceacdntut edtiotffofiecnrdhaanacnesc.teatWaislhtoeincena,llteyhvseeilgnenviwefhliceoanfnt
no specific causative factor is responsible.
"(CToOhrBerSem/saEpgXonPni)dt,iunmdgeuosprftotbahalebsioldibitfeyfecvroaenlnsuciee,dseehrxoepudrlidensbdseaetdcaoanissntitehdreeprrreeatdtaittoiooogfne.othbTeshreerinvOeBadSst/osEeeXxPpserscattmeioodeftannnhutdmebitesrs
difference between an observed and expected number.
Innteumcmeabseysrab,reitblhuyatfttothlheleodwioftbhfsaetreeranvcpeeadritsniuncmoultbaesrrtaaftgoiesrtnitacaapltalrytthsieicgupnlilafarincctaanmtua.syeInnisotthgirbseeaitnaesstrsaotnchciaean,ttiethddewoeiextshpentcohtteed
meboxydcdeearstasatmeforreobxmicdteihstesy.roeIrsfttmoohfrettahnlietypuliannmtot.hfabpAtlegsreroso,ouirnpt smwaaotuyltbhdeebptelodaoifnsftoioceunxlpfttoosroededfetftoeectcthtseobafegcaeannustaiegesonsftmdatilollu,btieon
manifested by excess morbidity or mortality.
=
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CONFIDENTIAL
CANCER INCIDENCE SURVEILLANCE - 1956-1992
MaleEmployees(Table1)
Among male employees at Washington Works from 1956-1992, 149 cancer cases are Sraetpaorryteadnadn1d.01732foerxmpaelcetewda.gTeheemptlotoayleoebss.erved/expected case ratio is 1.25 fomr ale
Bucavc ityac ndpa harl ynx
5mC1ao6nncoexgprasmcaoiflodet)hw.eabgOuencce(a9lc,caoasrseoehrsaalas,nbdcea3exv.ipn1teyrceelaxpepnodedr.ctpieAhednadsa)rityannocnxmediatcarhlelseimstltaeaasslttieassrteueirmcvalpilelpliyol(yls4iaecgneancsisefe(iusc1)pa0,dntacoltatyesheeetlrsherpvvaoaerutrtgesshdus o1f52m9ouatnhd(01.c3awsoe)u,ldorhoapvhearbyenaxn(e1 case), pharynx (2 cases) tongue (1 case) and salivary gland (1 case). fPGroeibnmapaceresynofrsimtsohkikfsianccgta.onrcsAelfrotr(heoo.ruga.glhtchsaoensvceeereramslpaolrcoecyuuepsdaetaiosofnmaselmtoagklr,eoluteepxsstsihlteaovoberacsbcteoeee,lnawlroceropkhooerlrtseudsatanogdehpaalvunemdbaenrs Sthde aatsiboleosgtyoosfwtoirksedriss)e,aoscec.upAantieoxncaelpetixopnosiusrtehsatapreernsootnssuesmppelcotyeeddtoinploacycuapamtaijoonrsrowliethin prolonged exposure to sunlight have a greater iskof lip cancar.
Recommend(aantdRiesoulntss):
D"sOemutotekroefmli1en0sescastsmoeobska,ci7cnogs,mhoIifskatevodarlicleiasgb,alrweei.ttthespaforrtiacunluamrbaetrtoefntyieoanrtso bienffoorremdaitaigonnosoins,u2seweorfe
nonsmokers and 1 case couldnotbe determined. Information on the use of smokeless
tobacco was not available."
SComnoskiedleerssusteoobfacecdoucaantdioinmaplomrattaenrciealosf: roegnutlhaer daednvtearlsheyhgelaelnteh veifsfietcstsinfsrcormeeunsienogf
`oSrAoascpliaecrtatynoctfeeorraust.ruWreelolnnessmsokperloegsrasmt,oabtlaiscsocroouuunrsscauegrvreeertnaotl apcrnlaiyncoitcnisceefwotrhopodeiiosstpralitebiuwtshekoAamacercreoiracdtaitnnegmCptatonitcnhegecltro
wueiltlnsemsoskianpgp.raiTshale,
The site has policy of only
allowing
smoking
outdoors
has
also
focused
attention
on
its dangers."
`"ATdhde w1o0rckasheiossntesohryyoeowafrnaoofnceeroatdhdmeiytmwioenoraelonhfciraeaexsdpei,otsatounrdpyerf.eorvAi2losouots,hwferoosr2rtkhcheaidssietasogrtnyhoersiedsvaitweeawsofowdif9ilaicgnanos&seiss.
yealrogseotfhfainring. Hace. Ofthe
Trheimsaiwnoiunlgd6mcaakseesi,t
u4nwliekreley
ctihgaatreetxlpeossumroekaetshaensdi2twwearse
nthoenscmaoukseerosf.the
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CONFIDENTIAL
Kidneyandotherurinarycancers
T`SAihtgetnihcfaiatcttaeingmtoei,rnyeomxfaalmkeiindeanmtepiyloocnyaoenfecwseo.rrakNnohdiksoittodhrneiereysucroiafnntachreeyr9ccacanascseaesrsshiaidsvenentobifleioeendngnerroepscotoartmtimesdotinscaaillnlicytey1t9h8a9t.
would suggest a workplace causality.
Multiple myeloma
Athree fold excess of multiple myeloma is seen among male employees (5 cases are o{inbhassnteart1visetedixcpvaelecrstsieugdns.if1i.Sc6taaentxciepst.eicctAaelmdos)i.nggnAiffniecmaadandlcieet,ieohmnopawlleocvyaeesree,s,wisa2osnclrayespetoserstwteeeddreionno1bf9so9eu0rr,vowerhdmiaocnrhderelcseausslsetss. r`aSduisapteicotneadnrdisiknfcarceloarssedfoargmeu.ltOipclceupmayteilonoamlagarroeufpasmitlhiaatl hhiasvteoryb,eeenxproespuorretetdo tioonhiazivneg "2whoriknecrrseeasxepdorsieskdotfa amrosretnaliict,yrfurbobmermuwlotrikpelresm,ypeeltormoalearuerfeafrinmeerrys,wocrokpepresrasnmdelwtoerrkers exposed to asbestos, plastics, cutting oil, wood dust and leather.
WRsuorervkecihloilsamtnocrmeieresesnoufl(dtaalslano7dntRcceaiassnueoclsetnwr)eirneciedxeanmceinweedreInIlsastuee1d9.92N,oshuonrutsluyaalftpeartttheemlsaswtere
hoibssteorrvyerdewviheiwchshwoouullddbbeeeixnpdaicnadteidveaonfdarceaosmsmeossnewdoarfktperlaicnecleuxspioosnuorfet.heThoinsework
additional case. "The additional case
does
not
change
the
previous
conclusion
of
no
commonality
of
exposure.
Otherlymphoma
wA(8hsectraatesiaestssic0va.el8rlyswusoisug3lni.df8ihceaaxvnpteebceetxeceden)s.esoxOpfenc`eotteahdded.ritlSiyoemnvpaelhnocmacasa'esechosansatribeneureeenspoarremtpoeodnrtgteodabllseimmnacalelei1ge9nm8apn9ltoyees
lymphoma, not otherwise-specified, and one is nodular lymphoma.
Olrceepcuoukrpetamotinialoaynraoelngrmeiosnrketrfaaallcilttoyyrgasrnaodrueipndeimdfoftrictouaglletittthoyerds.etutMdeoirremtsia,nldieetfyartfohrmsomtfhrleoymlmiaptlehlrolatmyumarpsehsahitanisccebcmeaoensncterressptouadrnitdeesd
10 be elevated consistently in
among several
chemists, rubber workers, petroleum other occupational groups.
refinery
workers,
and
less
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`J"oRWbeoocrrokmhwmioesrntkodraaitreiseoaonfcltu(hasnetd.e7rRcseaswsualertse)rneoptoardt.edTthherwoougrhk 1h9is8t9orhyadofbteheenoneexaamdidinteidonaanldcansoe should be determined and compared with those of the previously examined 7 work histories.
"The additional case does not change the previous conclusion of no commonality of exposure. Also, one case was diagnosed less than half a year after to transfer to the site!
Leukemia
Tishneoelleovnagteirosntaitnislteiuckalelmyisaigpnriefviicoanutsl(y9rceapsoersteadreamroepnogrtmeadlaenwda5g.e1 waonudladllbmeaelxepeecmtpeldo)yees beAt1w9e9e1ncwaosre-kcoinntaronlysatruedayoaft ltheeukpelamnitaaantdWadsevheilnogptmoennWtoorfklseufkoeumnida.noWaesswoiclilactoinotninue to monitor for any additional cases.
Malignantmelanoma
Irreenppcooirrdtteentdcheroaonfudgmh3a.l18i9g8en9xa.pnetcStimenedc.laatTnhhoeinms,af1iinscdeailnsegevwahataessdnbaoemteopnnrregespemonertntienidntahtnehdemso.a5sl5tawrroyeucrloaldnl,thwsaiuvtrheve8bielcleaansnecse weoxhbpseaercretvanedod.na-Inmndacni7ud.ae3lnecxwepoeirscktseerodsm.eawrTehhaiatts glproaewtaeitreetrmhrfaionslkletoxhwpsaenrcetmpeaodnrutisnalitnhwetohwrekaeggraensoerorflal,dlewpvioetplhuol5paitcinaogsne,s malignant melanoma. The effect, however, doesnotappear to be related to occupational
factors.
TI2nh0teyheemaagrjesonroefrraifslek.pfoapAcutllotarhtoiisuongb,heltaihneeveeixdnccteiosdbseenocfeexmocafalsmisagilnviaegnntsaumnnetllimgaehntloaemxnapoomhsaausrheba,esepbanreteriencpuolrairrstilenydgiinrnatpshiedevlfeyi.rrastl
`cohcecmuipcaatlioentailoleopgiidceamgieonltogiys
studies, no suspected.
consistent
pattems
have
been
seen
and
no
RSisienacccerumocailmailgmfnaaecnttnormdfe(olaaranantdfoaRimveaosoruIalnsbttlsshe)epmroosgntodseiasd.lyWfeorrmecoofmsmkienncdadnicsetrr,ibeuatriloyndoifagnosis
ldietsecrratiubreesacvhaairlaacbtleertihsrtoicusgohftmhoelleocsalwhbircahncmhaoyfiynoduircaAtmeetrhiecparneCsaenncceeroSfomcaileitgynwahntich
m`OeulraWneolmlnaeasnsdCotnhseulnteaendt fhoarsuprrgeepnatrepdroafnesesmipolnoalyemeedtriacianilngcopnascuklatagteioonn.the dangers of
skincancerwhich will be used in thenearfuture."
=
Athsea8psraelcaaruytrioollnacraysmeesatsoureen,suwree rtheactonmomjeonbds eoxrawmoirnkatairoenaosfatrheemwoorrekihnicsotomrmieosnof 2
than would be expected.
I
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CONFIDENTIAL
w"oTrhkeesde 8focra5seyseadros naottSaapvpaenanrathoRhiavveer aanndy caonmamthoenralwiotrykeofdefxopro1s0uryee.arOsnaet SiandbiivnieduRailver. cBoatshaslowcearteiodnsiapgrnoovsieded a4m-6plyeeaorpspoarfttuenrittryanfsofreerxtpootshueresitteo, swthriocnhg sisunslhiogrhtte.r Ttwhaonotthheer10-20 year latency period typical for melanoma.'
Eemale Employees(Table2)
fTehmearleeaermepnlooysteaetsistaitcaWlalsy hsiignngitfiocnanWtoerxkcsesdsuersinogr 1de9f5i6ci-t1s8i9n .theOvcearanlcle,r2e0xpcearniceenrcecaosfes wre reported and 14.9 expacled; 7ofthese cases ware breast cancar, compared with
5.2 expected. In the wage roll, 10 cases were observed versus 5.8 expected, and in
the salary roll, 10 cases versus 9.0 expected.
|
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ga simga:a vmen rsnr eoceoro nannasn e~csekuXnn NnKOsReNi RnmOsEMoCc On=SmgEEto NEeEEgn
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:$
ogiRisnNesAAIRNGN
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=
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:
CONFIDENTIAL
MORTALITY SURVEILLANCE - 1957-1993
`Male Employees and Pensioners (Table 3)
"The overall mortality experience of male wage and all male employees at Washington Works continues to be statistically significantly lower than expected. Forthe time period 1957-1993, a totalof444 deaths are observed among all male employees and pensioners at the site and 494 would have been expected based on DuPont mortality rates (Table 3).
All malignant neoplasms
wAasgteati(s7ti2cadlelaytshisgnviefircsaunst 8de8f.i6citeoxfpedcetaetdh)sainsdsaelelnmafolrealelmcpalnocyeeresscaonmdbipneendsiaonmearnsg(m1a15le
deaths showa
vsetartsiustsic1a4l1ly.3siegxnpifeicctaendt)d.efNicoitneinomfortthaeliitnyd.ividual
cancer
causeof
death
categories
tMohretialnictiydefnrcoem sluyrmvpehialtliacncaenrdeshuelmtsa,toipsocileotsiectnoeeoxppleacstmesd,. a category which is elevated in
Other heart disease
eMoxrpteacltietdy.frTohmis"octahteergoherayrhtadsissehaoswen" iasneleexvcaetsesd,inwiptrhev1i7oudseartehposrtrse,pobruttetdhaenrdat1io0.o7f orebssiedruvaledgrtoouepxipnegcctoemdpdreiastehssnhoans-snpoetcibfeiecn`hneoatrtsftaaitliusrtei'caallnydsiogtnhiefricialnlt-duenftiinlendodwe.scrTihpitsions paenrdiccarodmiptliis,caatciuotnes aonfdhesaurbtadciusteeaseen;doic.ea.rdaictuitse, aancudtcehmryoonciacrpdiutlimso,noatrhyerdidsiesaesaes,eaocfute dpyesrrirchayrtdhimuimasa.ndNeondoocccaurpdaitiuomn,aclarridsikofmayctooprasthayr,e csounsdpuecctteido.n disorders and cardiac
Arteriosclerosis
Tehmeprleoyies eass(ta4tdisetaitcahlslyvseirgsnuifsic1a.n3teexxpceecstesdo)f.dAerattehrsiofsrcloemraasritse,riaosccolnedriotsiisonacmhoanragctalelrimzaeldeby
Ytheiacrksenoifndgeaantdh
lossofelasticity are 1977, 1978,
of arterial 1992 and
walls, 1993,
has and
anogeksnaotwdneoactchuapratei5o0naalnrdis7k8fa(ctthoeres)..
Motorvehicle accidents
dMeoattohrsovehibclesaccaeidnednr3ta.l7vedxepaeetchtsdewde.rFeohuirghoefrtthheasne edxepaetchtsewdeirnetrheecmenatl,e 2sialnar1y99ro0lla, nwdith2 8 in 1993. There is a marked deficit of deaths from "other accidents" in the male wage roll.
There is a marked deficit of suicide among male wage and all male employees.
:
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CONFIDENTIAL
EemaleEmployeesandPensioners(Table4)
ANmooUnngusfueamlalpeatetmepmlsoayreeesseaenndwpietnhsrieosnpeercst, t1o6inddeiavtihdsuaalrceaoubsseerofveddeaatnhdca1t1e.g9oreixepse.cted.
12 )
=
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CONFIDENTIAL
SUMMARY
Ttohfeoflilrostw-durpafotonfptohsiistidvoecsuumrveenitllcaonncteafiinneddinrges.coTmhmeenfdianatlisounrsvefiolrlcaonncesirdeeproarttioinncblyudyeosur site
results of recommendations and follow-up actions taken by the site.
Results of these surveillance data were communicated to employees at the plant site.
15-
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EID121894
000030