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RE: today's question



Kathy--

Non-toxic, non-flammable CFCs substituted for toxic, flammable ammonia
and toxic sulfur dioxide as refrigerants. Also CFCs substituted for
flammable foam blowing, cleaning, and sterilizing agents.

At one time there were concerns that U.S. forests would be destroyed to
meet the need for railroad ties until creosote wood preservation
arose--saving trees and leaving behind some Superfund sites.

Arguably, lead and chromium containing paints and coatings could have
been viewed as environmentally beneficial compared to less effective
paints for protecting underlying substrates from corrosion and decay
and, thus, reducing leaks, structural collapses, disposal, and use of
virgin materials for replacement structures.


Rod

Rodney Sobin
Office of Small Business Assistance
Virginia Department of Environmental Quality
NOTE NEW--Postal: P.O. Box 1105, Richmond, VA 23218-1105
Street:  629 E. Main St., Richmond, VA 23219-2429
Tel. 804-698-4382       fax 804-698-4264 
rsobin@deq.virginia.gov 
________________________________________________________
Environmental Assistance for Small Businesses
http://www.deq.virginia.gov/osba 
Virginia Comprehensive Assistance Network
http://www.deq.state.va.us/osba/vacan/ 
DEQ Innovative Technology http://www.deq.virginia.gov/innovtech
DEQ Distributed Energy Resources
http://www.deq.virginia.gov/innovtech/der1.html

-----Original Message-----
From: owner-p2tech@great-lakes.net [mailto:owner-p2tech@great-lakes.net]
On Behalf Of Kathy Barwick
Sent: Monday, April 16, 2007 12:47 PM
To: p2tech@great-lakes.net
Subject: today's question

hi gang, happy Monday. Today's question: we're looking for examples of
chemical substitutions to address certain concerns that have had
negative or worse consequences. First one that comes to mind is
flammable solvents to chlorinated solvents to n-Hexane. Then there's the
MTBE one. Any others that you can think of off the top of your head?

thanks.

Kathy Barwick
Dept. of Toxic Substances Control
Office of Pollution Prevention
(916) 323-3381 or (916) 255-6421
fax (916) 255-3595


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This list is managed by the Great Lakes Regional Pollution
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