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AL2S26S:394
Taft/
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July 7, 2010
SnEPA Do Cortes Docket Center,MOMC2208L2T2Ter
EPA West, Room 3334
1200 Pennsylvania Avenue, NW Washington, D.C. 20460-0001
Re: OSuRbDm-i2s0s0i3o-n0t0o1I6RIS and AR-226 Database For PFOA/PFOS: TT EPA-HQ-
To IRIS Database for PFOA/PFOS:
sUuSlEfoPnAa'Itnse r(eef`sfPopFroOtnsSs"te)o tcwooitnthshiiendNetorhtepiecIrneftilesugosrruaoteoedcdtbRayinosUikScIEanPcfioAdrmo(an"tPiFFoenObASr"uy)asratynedm23p(,`eI2rRf0Il0Su"6)o,r,reo7go1actrFadenide.ngReg.
9333-9336 (Feb. 23, 2006), we are submitting the following additional information to USEPA for inclusion in that review, and for inclusion in the AR-226 database:
1
New Castle, Delaware, Municipal Services Commission Customer Flyer
on PFOA/PFOS Test Results (2010).
Ve ruly yoars)
mn
bert A. Bilott
Enclosure
[=
Gloria Post (NJDEP)w! encl. ) (via U.S. Mail) Helen Goeden (MDH)(w/ encl. ) (via U.S. Mail) Lora Wemer (ATSDR)w/ encl. ) (via U.S. Mail)
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WATER
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We Thought You Should Know
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If you have seen the latest editionof National Geographic magazine the whole issue is
devoted to the subject of water. Just as people are concerned about Global Warming
there are those who are trying to raise the public's awarenessofthe world's water supply
and the threats it is under.
Regulated and Unregulated Sources of Contamination
Every June the MSC publishes it's Consumer Confidence Report and mails it to every
residence in the City. The CCR discloses to the public all EPA (Environmental Protection Agency) regulated substances found in your drinking water and their Maximum Contaminate Levels (MCLs). Currently there is no regulated substance which exceeds the Maximum
CococnutrarimnigniannttheLeevnevlirionnymoeunrt darnidntkhionsgewtahtaetra.re Tmhaen-rmeagudlea.ted substances are both naturally
Teflon Precursors (PFOA and PFOS)
A customer requested the MSC test for the active chemicals foundin Teflon (PFOA and PFOS). This citizen was concerned about newspaper reports that trace amounts were showing
up in the drinking water supplies in New Jersey and Maryland. He felt there was a reasonable
expectation we may alsobe exposed since we share the same aquifer. The Commissioners agreed that the MSC should test for the presence even though the EPA does not regulate these two chemicals.
Test Results
Two sets of test were done and both showed the presence of PFOA and PFOS, the active
ingredients in Teflon in the MSC's source water. The MSC shared this information with the OfficeofDrinking Water and the State Toxicologist. Since these are not regulated substances the EPA has not set an MCL for its presence. The State suggested that we take samples at the
titaspctuostmoemaesrusreabiotsutprietss epnrceeseinncoeu.r treated water. The MSC willdothis but it feltitshould notify
Parts Per Billion
oe
Teflon precursors are measured in parts per billion. One (1) part per billioins theequivalent. 10 ateaspoon of water in an Olympic size pool (660,250 gallons) or a singlepennyin 2
a$1n0d,0P0F0O,0S00w.asTehqeuaMlStCo ofnoeunpdenanty.its highest concentration that PFOA was 1716 ofa singleipenny
ThCeoMnScClwuilsdioofunrther testing and keep is customers advised about any risk they may
be exposed to.
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July 2.2010
EPA Docket Center, MC 28227
U.S. Environmental Protection Agency
EPA 1200
West, Room 3334 Pennsylvania Avenue,
NW
i=
Washington, D.C. 20460-0001
Re:
Submission (0 IRIS and ORD-2003-0016___
AR-226 ~
Database
For
PFOAPFOS: oo
EPA-HQ- i
To IRIS Database for PFOAIPFOS:
USEPA'Insreefsfoprotnssteo tcoontshiedNeortpiecrefilsuosruoeodcbtaynoUiScEaPciAd o(n`PFFeObAr'u)araynd23p,er2f0l0u6o,roroecgtaarndeing s9u3l3f3o-n9a3te36(`(PFFebO.S"2)3,wi2t0h0i6n)t,heweInatregersautbemditRtiisnkgItnhfeorfmoaltlioowninSgyasdtdeitmio(n`aIRlISi"n)f,or7m1atFieodn. toReg. USEPA for inclusion in thal review, and for inclusion in the AR-226 database:
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Gbert A Bist
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Enclosures
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Review Paper
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Human detoxification of perfluorinated compounds
S.J. Genuis", D. Birkholz, M. Ralitsch, N. Thibault
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