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Re: Solvent issue

Linda I appreciate your response. What I was looking for was either
interested individuals/companies or direction regarding the issue of
chemical/voc problems with facia/facade cleaning and how to minimize it.
Technology is now available from Europe which uses non-chemical cleaning
methods for this application. While the chemicals used for one building
may be minimal the ongoing use throughout even just New York City is
Your continued asistance is appreciated.

Pat Morrissey

linda_jekel_at_chppm3__apgea@chppm-ccmail.apgea.army.mil wrote:
>      Pat, it is not clear to me what your question is.  It sounds like you
>      have a lot of answers.
>      LJ
> ______________________________ Reply Separator
> _________________________________
> Subject: Solvent issue
> Author:  <p2tech@great-lakes.net > at internet-mail
> Date:    1/12/98 11:37 AM
> I joined this listserv as a result of my involvement in another listserv
> which is directly related to my field of historic preservation. One of
> the members on that list thought there might be some information here
> re:state issues on solvent use reduction.
> I realized after a very short time that the efforts of this group are on
> a much grander scale than my original intent.
> Before I un-subscribe I thought I would just pose a question and
> statement about my interests.
> In building facade cleaning chemicals (solvents) both highly acidic and
> highly alkaline are used to "restore" a structure either on a one time
> or periodic basis. The containment needs as well as some of the
> undesirable results are obvious, especially to this group.
> Working with a manufacturer of a non-chemical cleaning system known as
> JOS which uses air, limestone powder, and a small amount of water many
> of the same results are achieved. It is not a total replacement rather
> an alternative in many cases. It's primary use has been international in
> historic preservation but is now being used even on skyscrapers.
> While some stringent VOC laws are in effect, such as Boston and New York
> City (very similar) one area enforces with a vengeance while the other
> virtually ignores the situation. As the limestone is basically from an
> agricultural base the resultant effluent, depending on the material
> removed, is non-hazadrous.
> If anyone has some thoughts, or can recommend another listserv that
> might be more appropriate, please let me know.
> Thanks,
> Pat Morrissey