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Re: Green Earth drycleaning, D5 solvent



Sounds like a typical sustainability issue.  We identified PERC as "bad", and focused our efforts on getting at PERC, but various alternatives may prove "bad" as well.  

Anyway, to answer your question we have a group that helps small businesses with environmental compliance and P2.  One of their people keeps track of dry cleaner issues and he said:
"New solvents are much like the "bug-of-the-month" clean-up and remediation methods.  Competitors among those who see an opening market as the industry's primary cleaning solvent, perchloroethylene ("Perc," or PCE) falls into disfavor put new solvents on the market all the time.  The total market segment for ALL of the new solvents is less than 10% with Exxon's DF-2000 being the largest in that small segment.  "

Tomas Vinson-Peng
www.p2Plan.org

Fax: 512/239-3165
Phone: 512/239-3182

Engineering Specialist
Texas Commission on Environmental Quality
MC112
PO Box 13087
Austin, Tx 78711-3087
tvinson@tceq.state.tx.us


Disclaimer:  Regulatory guidance  e-mails are provided to quickly get you an answer to legal requirements.  They are not a substitute for compliance with the regulation, but guidance based on the best information available to the staff of TNRCC at the time.


>>> <Sheehan.Eileen@epamail.epa.gov> 07/22/03 02:24PM >>>
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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