Peter H. Pache on fri 5 oct 07
EPA has announced a 45-day public comment period for the draft document,"An Exploratory Study: Assessment of Modeled Dioxin Exposure in Ceramic Art Studios (External Review Draft)".
This draft is available at:
http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=154560
Regards,
Peter
NM
pdp1@EARTHLINK.NET on sat 6 oct 07
Hi Eduard, all,
Appearently, 'meat', dairy' and the non-metal containers various foods come
in, are the prime offenders -
http://a257.g.akamaitech.net/7/257/2422/14mar20010800/edocket.access.gpo.gov/cfr_2002/aprqtr/21cfr109.30.htm
I recall reading somehere, that those human Mothers who Nurse their Babys,
who show the highest rates of badly polluted Mother's Milk ( PCBs, Dioxin,
DDT, heavy Metals, you name it, in the ) are those whose diets include the
eaitng of Meat and Dairy...and Vegan Mothers showed the very least
concentrations.
Oye...
Phil
l v
Lynne and Bruce Girrell on sat 6 oct 07
Peter H. Pache wrote:
> EPA has announced a 45-day public comment period for the draft
> document,"An Exploratory Study: Assessment of Modeled Dioxin Exposure in
> Ceramic Art Studios (External Review Draft)".
Good god, now ball clay is going to get banned.
Bruce Girrell
pdp1@EARTHLINK.NET on sat 6 oct 07
Hi Larry, all...
If memory serve, PCBs are fat soluable...not Water Soluable...even if
dispersable in Water or hydrous materials.
I do not think that wet Hands would absorb them very well at all, from non
fat-bearing Clays.
So, I do not see how their supposed, inconstant, and infinitely minute
presence, supposedly in ( some?) Ball Clays, is going to bother anyone to
any degree honestly worth mentioning.
The amounts of PCBs possibly present in Clay dusts more than begs absurdity,
when more than 10 ppm of PCBs are admitted to be in most food packaging, to
be absorbed by the ( typically ) 'fat' containing foods so packaged...to be
absorbed by whatever poor pilgrim eats those foods.
If you want PCBs, just cover foods in 'HandiWrap' or 'Saran Wrap' or the
likes, and Microwave them.
One meal and you will have a few thousand lifetimes worth of what the Ball
Clay had to offer, and, in a nice fat soluable way you will definitely
absorb!
It's easy! A Cub Scout can do it..!
Too, in terms of the presence of PCBs in 'foods' themselves, aside from what
the foods absorb from packaging materials - 'meat' and 'dairy' contain the
highest amounts for you to absorb, by eating them.
So called 'Farm Raised' Fish, likewise...and maybe even more so.
One Pizza, one Steak, some 'Farm Raised Salmon', a few bowls of Ice Cream? -
any one of these should be worth the next several dozen life-times of
constant uninterupted bathing in Ball Clay Slip...
The concentrations of PCBs, Dioxin, DDT, Heavy Metals, and other CNS and all
round general inimicals, present in the milk of lactating human Mothers, who
are not Vegan and 'careful' even at that?
Prolly high enough to go off the charts...or high enough to qualify for the
EPA and HasMat teams to show up doing those 'Starsky and Huch'
four-wheel-drift skidding slide stops, running up in their 'moon-suits', and
putting them yellow non-adhesive 'tape' things across, with barracades soon
after, and an armed guard.
Lol...
Far as I know...
Phil
l v
----- Original Message -----
From: "Larry Kruzan"
> At the risk of appearing ill informed and a true country bumpkin (I
> confess
> on both counts) - Just what does this mean to me? Please use words with a
> limited syllable count. Should I start stock piling ball clay now before
> the EPA makes it "safe" and utterly useless for us?
>
> Larry
>
> -----Original Message-----
> From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Peter H.
> Pache
> Sent: Friday, October 05, 2007 8:42 AM
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: [CLAYART] EPA's review draft
>
> EPA has announced a 45-day public comment period for the draft
> document,"An
> Exploratory Study: Assessment of Modeled Dioxin Exposure in Ceramic Art
> Studios (External Review Draft)".
>
> This draft is available at:
> http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=154560
>
> Regards,
> Peter
> NM
Doric T. Jemison-Ball ll on sat 6 oct 07
Dear Bruce/Peter:
Fear not. I read the paper and they estimate only about an additional 10% of
the average daily exposure results from working in ceramic studios. 80% of
the average daily exposure comes from food. Since the EPA hasn't banned food
yet, they probably won't ban ball clay. However, it probably is a good idea
[for this and other reasons] not to breathe ball clay dust or prolong skin
exposure. I doubt, however, that throwing with rubber gloves on will catch
on.
Doric T.Jemison-Ball II
BBS-LA
14622 Ventura Blvd. #727
Sherman Oaks, CA 91403
707-884-5067 Voice
707-884-4449 FAX
818-606-6678 CELL
buffalo@bbs-la.com
http://www.bbs-la.com
"You can always cure the sausage that's too long"
Susan Gatherers
----- Original Message -----
From: "Lynne and Bruce Girrell"
To:
Sent: Saturday, October 06, 2007 4:55 AM
Subject: Re: EPA's review draft
> Peter H. Pache wrote:
>> EPA has announced a 45-day public comment period for the draft
>> document,"An Exploratory Study: Assessment of Modeled Dioxin Exposure in
>> Ceramic Art Studios (External Review Draft)".
>
>
> Good god, now ball clay is going to get banned.
>
>
> Bruce Girrell
Larry Kruzan on sat 6 oct 07
At the risk of appearing ill informed and a true country bumpkin (I confess
on both counts) - Just what does this mean to me? Please use words with a
limited syllable count. Should I start stock piling ball clay now before
the EPA makes it "safe" and utterly useless for us?
Larry
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Peter H. Pache
Sent: Friday, October 05, 2007 8:42 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: [CLAYART] EPA's review draft
EPA has announced a 45-day public comment period for the draft document,"An
Exploratory Study: Assessment of Modeled Dioxin Exposure in Ceramic Art
Studios (External Review Draft)".
This draft is available at:
http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=154560
Regards,
Peter
NM
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots2@visi.com
om on sat 6 oct 07
On Oct 5, 2007, at 6:41 AM, Peter H. Pache wrote:
> EPA has announced a 45-day public comment period for the draft =20
> document,"An Exploratory Study: Assessment of Modeled Dioxin =20
> Exposure in Ceramic Art Studios (External Review Draft)".
>
> This draft is available at:
> http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=3D154560
It sounds scary if the EPA has issued a report because of the mass =20
prejudice against all things chemical and mineral when technical =20
names are used (which encompasses every single atom in the =20
universe), but if you skip on down to page 56, under "Conclusions", =20
you can see that what they found isn't that frightening -- short =20
summary: ball claydioxin dose is about 10% of the normal daily =20
intake from background sources. If you're concerned about the extra =20
10% from clay, cut your daily calorie intake by 11% to offset it.
-------- EXCERPT-------
In the general population, adult daily intakes of CDD/CDFs and dioxin-=20=
like
polychlorinated biphenyls (PCBs) are estimated to average 43 and 23 =20
pg TEQ, respectively, for a
total intake of 66 pg TEQ/day (U.S. EPA, 2003). More than 90% of =20
this intake is derived from
food ingestion. These intake values are based on the =93administered=94 =
=20
dose or the amount taken
into the body before absorption. The hypothetical doses presented in =20=
this report are on an
absorbed dose basis. Thus, the background dose must be converted to =20
an absorbed basis to
compare it to the values presented here. U.S. EPA (2003) reports =20
that about 80% of dioxins in
foods are absorbed into the body. Applying this factor, the =20
background dose on an absorbed
basis is 34.4 and 18.4 pg TEQ/day for CDD/CDFs and dioxin-like PCBs, =20
respectively, for a total
intake of 52.8 pg TEQ/day. Comparing these values to the average of =20
the hypothetical doses for
the 10 subjects estimated here (3.45 pg TEQ/day) indicates that the =20
ball clay dose is 10% of the
background CDD/CDF dose and about 7% of the total CDD/CDF/PCB dose =20
(on a TEQ basis).
Note that the general population dioxin dose is a long-term average =20
and the hypothetical ball clay
dioxin dose is an estimate for a single day when exposure occurs. =20
Accordingly, this comparison
implies that ball clay use is a frequent event, so that the long-term =20=
daily average ball clay dose is
similar to the single-day dose. If ball clay use is infrequent, then =20=
the long-term average dose
from ball clay will be reduced and adjustments would be needed to =20
make a valid comparison to
the background dioxin dose.
--------------------------------=
Edouard Bastarache Inc. on sun 7 oct 07
Phil,
some known sources of dioxins :
SOURCES :
- contaminated products such as
chlorinated phenols and their derivatives
- polychlorinated biphenyls (PCBs)
- incineration of municipal, hazardous, and
hospital wastes
- sewage sludge
- automobile operations
- fossil fuel combustion
- emissions from fire involving PCBs
- production of chlorophenols and their
derivatives
- chlorophenol wood treatment
- chlorine bleaching in the pulp industry
- production and handling of iron, steel, and
other metals,
such as aluminium
- herbicide use
- from industrial and transportation incidents
- in occupational settings, exposure has occurred
in chemical manufacturing
processes and from handling the wastes from
these processes
- american ball clays
- one german china clay deposit (Westerwald)
- other materials including montmorillonite,
bentonite, ground clay, bulk clay,
Al-Ca-silicate and lime
- dioxins, in small amounts, are also produced
naturally by volcanoes and forest fires.
- etc.
Of the 23 categories of dioxin sources throughout
North America, the biggest are :
- municipal waste incinerators (25 percent)
- backyard trash burning (22 percent)
- cement kilns burning hazardous wastes (18
percent)
- medical waste incinerators (11 percent)
- secondary copper smelters (8 percent)
- iron sintering plants (7 percent)
Gis la revido,
(A la revoyure)
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
http://www.flickr.com/photos/30058682@N00/
http://myblogsmesblogs.blogspot.com/
----- Original Message -----
From:
To:
Sent: Sunday, October 07, 2007 12:17 AM
Subject: Re: EPA's review draft
> Hi Eduard, all,
>
>
>
>
> Appearently, 'meat', dairy' and the non-metal
> containers various foods come
> in, are the prime offenders -
>
>
> http://a257.g.akamaitech.net/7/257/2422/14mar20010800/edocket.access.gpo.gov/cfr_2002/aprqtr/21cfr109.30.htm
>
>
> I recall reading somehere, that those human
> Mothers who Nurse their Babys,
> who show the highest rates of badly polluted
> Mother's Milk ( PCBs, Dioxin,
> DDT, heavy Metals, you name it, in the ) are
> those whose diets include the
> eaitng of Meat and Dairy...and Vegan Mothers
> showed the very least
> concentrations.
>
>
>
> Oye...
>
>
>
>
> Phil
> l v
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or
> change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be
> reached at melpots2@visi.com
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition. Version: 7.5.488 /
> Virus Database: 269.14.1/1051 - Release Date:
> 2007-10-05 12:27
>
>
Ivor and Olive Lewis on sun 7 oct 07
Seems to me as though what has been given in the annals of Clayart about =
the incidence and quantity of Poly-Chlorinated Bi Phenol Oils is so well =
larded with technical jargon as to be meaningless.
If you read the extract with care the information seems to reside in the =
sphere of the hypothetical. Statistically, is a sample of ten subjects =
adequate data from which to draw conclusions.
<for the 10 subjects estimated here (3.45 pg TEQ/day) indicates that the =
=3D20 ball clay dose is 10% of the
background CDD/CDF dose and about 7% of the total CDD/CDF/PCB dose =3D20 =
(on a TEQ basis).>> seems like something from a Sci-Fi Novella.
And just which "Foods" carry Ball clay as an ingredient ?
Best regards,
Ivor Lewis.
Redhill,
South Australia.
| |
|
