Chuck,

Your best bet is to perform a TCLP (Toxic Chelate Leachate Procedure) of a
representative sample at an Environmental Lab (check for EPA certification)
to see if  the regulated heavy metal concentration is in excess of the
permissible limit.  If you find that your boards , when ball milled and
soaked in acetic acid, don't leach land-banned concentrations of regulated
heavy metals, they would not be considered a hazardous waste.

Alternately, If the quantities are sufficient and the gold metal thick
enough, a metal refining house may take all your waste and return to you as
credit the difference between the refining charge and the value of the gold.


Ron VandenDolder
Telaxis Communications
SouthDeerfield, MA.

-----Original Message-----
From: Chuck Garth [mailto:[log in to unmask]]
Sent: Thursday, June 28, 2001 2:13 PM
To: [log in to unmask]
Subject: [TN] Circuit Board Disposal


I have to dispose a large quantify of circuit boards. Mostly FR2, some
HASL,bare copper, gold flashing. Can any one give me the proper procedure
for
disposing of these boards.
I understand that the dumpster may cause me problems with environmental
people.

Chuck Garth

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