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February1,2002
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Office ofPollutionPrevenantd Tioxoincs
USEPA
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Re: TSCA8() SUPPNL OTIE CE OMN:PE erfluN oroocTtancA sulfoL nate DSocEkeHtONo-s1180-374
DearSir:
`n3dMhPaserecreivfeddlrafutreoporrt (ooPfrFeOopSr)ocfdurcottmiWoainlsdtnuldiifeeesIonstfenrnouarttihloenranfl,boLobTwDh.ni,tieanadinctdamtaienlglard eafnfedctOsBCsDdeGsucirdiebleidbnee2l0o6w.aTnhdfeosltluodwieedswepirleodt onanegaec-cfoirnddiinnggsttouFdyItFhRaAtGwuaisddeleienmee7d14 i`nwcooenkcfleuesdiivnegassctoonttairniengaPRtOmS.eDnrratepf-rhorduiectilsveaefttfeecotdsr.epsTuhltaessartoatvhaiuwloebrldelebaatisotheidsgeotniy2nse1,``bmuotnatnhasl.yTthiecraelrfoosruel,soi ifssneortuymetapnodslsiivbelrelteovceolrsrweillaltneotthbeefionbdtianignseddefsocrraitbeldehasetrtewinowith presentlovelsofPFOSinwildlife
1. MallardDietaryStudyResults:
`16epaixrspoffoodrus2ckuwsorwekeesr.eTehxpeoSs0epdvpimaffoeaeddlfeovre2l g1rwoeuepkwsa;hsattecrhmliinnagtsewdesrtewreeearked7wdiutehtoout
bovuetrttersmiginnsaotfedtaotxiwceiteyk.Thdeue1t5o0opvperntfoseignlseovfetlogxricoiutpyw.aTshdero1p0pppeedntfoee2d0plpevmealgtrwoeuepk 3,
showednodifferenceinreproductiveperformancefromthecontrol,notreatmentrelated
d`imofrftearleintcieessf(raodmulttahnedcoynoturnogl),n,nodoiofvfeerrtesnicgeinsnodfetgoexniecriattyi,onno/abtordopyhwyeoifgshetomirnliifveerrowuesight tubulesfromthecontrol, no differenceinoggabellthicknessfomthecotro,nofeed
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`ocfofnespurminpgt.iHoonwdiefvfeerr,enrceedsufcreodm ttehsteecsosnitzreowlaansdnonloedofifnsp2rcionngdtirfoflemraelnecsesfanrdom7ttrheeatceodnmtarloels.
Histopathologyshowed 1controland 4treatedmaleshaddecreasedspermatogenesis.
`eTvhiedpeantcheoolfodgeycrreepaosretdnsopteerdmatthoatgetnheersiesd,uicsedtfeesattiucruelmarossitzeco,wnsiitshtoerntwwiitthhoeuatrmliycproosstc.opic:
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OfficeofPollutionPreveanntd Tioxoicns
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PFageebNor.u12,a2r00y2
reproductivephaseregressions, anormalphysiologicalphenomenon. The
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degeneration/atrophynotedinthecontrolandtreatedadultbirdsmaysimplyrepresent a
aterstageofthisnormalchange. However,theincreasedincidenceof reducedsize
suggeststhat treatmentmayhaveacceleratedthenormalpostreproductivephase
:
regression.
IL.NorthernBobwhiteQuail
16pairs ofnorthernbobwhitequail wereexposedfor21 weeks;hatchlingswerereared `dwuiethtoouotveexrptossiugraesfoofrto2xwiecietkys..TThheeS15O0ppppmmffeeeeddlleevveellggrroouuppwwaassdterrompipneadttedoat20wpepemka7t `week 3 and terminatedafi week 4duetoovertsignsoftoxicity. The 10ppm foedlevel cornotruopsl,hnoowfeodendocaodnuslutmpttrieostnmdeiaftfreerleantceedsmforrtoamlciotyn,trnoolb,nooddyiwffeeirgehntcedsififneoregngcaehseflrlom thicknessfromthecontrol,andnodifferencesinspermatogenesisormorphology of testesfromcontrol. However,thereweretreatmentrelatedeffects: -- rfeemdaulceeldirveearctwieoingthotsstwiemruleih,irguhfefrletdhaapnpceoanrtarnoclesa(nsddulltse)thargy (adults) -- moeffcsrporpisnygisnudrivicvaatlerdarteeduwcaesdatfefsetcetsesdiz(efienwe1rcnounmtbroelrmoafle14a-nddays7turrevaitveodrmsapleerseg(gadsusletts)) Nootherreproenddpouintcswetreiaffvecteed.
`eTvhiedpeantcheoolfogdyercerpeaosretdnsopteerdmtahtoagtenheesriesd,uicsedtfeesattiucruelmarossitzc,ownsiitshtoerntwwiitthhocuatrmliycproosstc-opic. rdeegpernoedruacttiiovnep/ahtarsoeprheygnroetsesdiionnst,haencoorntmraollpahnydsitorleoagteidcaaldpuhltebniormdesnmoany.sTihmeplyrepresent a lsautgegressttasgtehoafttthriesantomrenmtamlacyhahnagvee.aHccoewleevreart,edtthheeinncorremaasledpionstc-irdeepnrcoedoufctrievdeupcheadsseize
regression.
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Forfurtherinformation,please contactmeat 651-778-4331.
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StaffVicePresident,EnviromentalTechnology andSafetyServices
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