Date: Tue, 19 May 1998 06:41:12 -0400
I was wondering how other companies are handling resist stripper skins.
Date: Thu, 21 May 1998 09:51:48 -0400
Rogelio --
Approximately 4 years ago, the IPC tried to get U.S. EPA to acknowledge
that stripped photoresist skins are not a hazardous waste in the aftermath
of a Region III ruling that trled that they were an "electroplating sludge"
and therefore a listed hazardous waste (F006).
Unfortunately, the EPA failed to issue a blanket exemption. Instead,
facilities can avoid an F006 listing for the stripped photo resist skins
only if they can ensure that two conditions are met:
1. the plating or etching equipment is not contiguous with the stripped
equipment, and
The objective of these conditions is to minimize any lead drag-out into the
stripping operation wastestream.
In addition, facilities must be prepared to demonstrate that the collected
skins do not fail other hazardous waste requirements such as the toxicity
characteristic leaching procedure (TCLP) or exhibit other characteristics
of hazardous waste (e.g., corrosivity).
Some states have determined that both resist skins and precipitated resist
sludge are non F006. You may want to check with your state regarding its
determination.
I know that this answer does not completely address your question; however,
I am hoping that it will prompt others to respond to your inquiry. Please
e-mail me directly (HollyEvans@ipc.org) if you have further questions.
Regards
Reply-To: "ComplianceNet E-Mail Forum."
Sender: ComplianceNet Mail Forum
From: Rogelio Horta
Organization: McCurdy Circuits
Subject: Resist stripper skins
ROGELIO HORTA
Reply-To: "ComplianceNet E-Mail Forum."
Sender: ComplianceNet Mail Forum
From: Holly Evans
Subject: Re: Resist stripper
X-To: Rogelio Horta
In-Reply-To: D053973A018DCED1@smtp.mccurdy.com
2. the boards being processed in the plating or etching equipment are
rinsed and dried prior to being taken to the stripper equipment.