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RE: Green Earth drycleaning, D5 solvent



Sheehan:

As the Kansas TAP, we have received several calls from dry cleaners asking
about the environmental benefits and regulatory burdens related to Green
Earth and found that a few facilities have made the switch.  I understand it
is costly, from a capital perspective, as specialized machines are needed.

This spring, we host a conference call between the solvent vendor in our
state and the regulator, KDHE.  We needed to clear up any possible
misinformation related to the use of the solvent in Kansas.  KDHE requires
Green Earth solvent dry cleaners to adhere to the same requirements that our
petroleum dry cleaners have.

Nancy J. Larson, RS
Industrial Pollution Prevention Specialist
KSU Pollution Prevention Institute
7001 West 21st Street North
Wichita, KS 67205
316/722-7721 ext. 104
800/578-8898
www.sbeap.org
NLarson@ksu.edu


-----Original Message-----
From: owner-p2tech@great-lakes.net
[mailto:owner-p2tech@great-lakes.net]On Behalf Of
Sheehan.Eileen@epamail.epa.gov
Sent: Tuesday, July 22, 2003 14:24
To: p2tech@great-lakes.net
Subject: Green Earth drycleaning, D5 solvent


I'm curious if those of you who work with drycleaners are 1) seeing
drycleaners convert to Green Earth solvent
(D5=decamethyloctapentasiloxane), and 2) aware of the new data EPA has
received on D5?  I've received calls from several TAPs asking me about
the new data submitted to EPA in February and suggesting I post this on
P2Tech.

D5 is marketed under the name Green Earth and is a volatile methyl
siloxane.  D5 is also used in various solvent cleaning operations not
just drycleaning.

EPA HQ  recently received some new information about D5/the Green Earth
drycleaning solvent. The data was filed under the TSCA Section 8(e)
docket - a notice of "substantial risk of injury to health or the
environment."  The preliminary results of an ongoing 24 month combined
chronic/oncogenicity study of D5 in rats indicates an increase in
uterine endometrial tumors for rats exposed for 12-24 months. See
<
http://www.epa.gov/opptintr/tsca8e/doc/8ehq/2003/february03/8EHQ-0203-15273A
.pdf
> for the actual submittal to EPA.

EPA's Office of Prevention, Pesticides and Toxic Substances reviewed the
new data at the request of California's Office of Environmental Health
Hazard Assessment and issued a statement that "At this time, the results
of this study indicate there is a potential carcinogenic hazard
associated with D5."   Dow Corning, which submitted the data to EPA
under an MOU called the Siloxane Product Stewardship Program, is
continuing further work.


Eileen Sheehan
Pollution Prevention Team
U.S. EPA Region 9
75 Hawthorne Street
San Francisco, CA  94105
Ph: 415 972-3287
sheehan.eileen@epa.gov


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