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RE: screw machine shops

1). If the solvent is haz before it is used, the waste is probably haz.  If
the solvent is not haz and the metals being cut have a RCRA metal alloyed,
then it could leach out.  Lead is a common alloy to improve the
machinability of the metal.  Zinc works also but is usually more expensive.
Very specific tin alloys are reported to be as good or better than lead and
are reported to be cheaper.

Steve Hillenbrand
Tennessee Valley Authority
400 West Summit Hill Drive
Knoxville, TN 37902
(865) 632-8489
(865) 632-3616 (Fax)
Internet address: sjhillenbrand@tva.gov
HomePage:  www.tva.gov/orgs/iwr

> ----------
> From: 	Vanessa Hinkle[SMTP:vanessa.hinkle@epa.state.oh.us]
> Reply To: 	Vanessa Hinkle
> Sent: 	Friday, January 07, 2000 4:45 PM
> To: 	P2tech@great-lakes.net
> Subject: 	screw machine shops
> I seem to have started my own screw machine shop initiative. If anyone can
> help me with the following questions, I would appreciate it.
> 1. How likely is it that waste solvent from screw machine shops will be
> hazardous for metals? Do most machine screw shops assume their waste
> solvent is hazardous? Do most shops have their waste tested?
> 2. Has anyone out there had problems with waste "Solvent 142" having a
> flash point below 142? What might be the reasons for this? Would most
> generators assume that if it was 142 when they bought it, it would be 142
> when they were done with it?
> 3. What are some P2 opportunities for screw machine shops?
> Vanessa Hinkle
> Division of Hazardous Waste Management
> Ohio EPA
> (614) 644-2974
> vanessa.hinkle@epa.state.oh.us