Date: Tue, 23 Feb 2010 11:51:40 -0800
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Paul Sonnenfeld <p_sonnenfeld**At_Symbol_Here**HOTMAIL.COM>
Subject: Re: Decommissioning Fume Hoods/Traps
In-Reply-To: <4B83A82D.9B43.00BA.1**At_Symbol_Here**>

A few too many years ago I was working on lab renovating at th e Jet Propulsion Lab.  Some lessons learned include:
- The traps in the sinks may have accumulated heavy metals and chlorinated solvents tha t are denser than water.
- I'd suggest run the CAM 17 metals (RCRA 8, plus heavy metals regulated by the State of California such as tin, nicke l, cobalt) on your wipe samples. 
- Contact your hazardous was te vendor and get the VERY BEST price you can for incineration.  In 2009 PSC was charging about $2/pound for incineration. 
- Load " stuff" in UN-rated 5-wall cubic yard boxes.  The boxes weight less t han 20 pounds and hold the equivalent of 4 or 5 55-gallon drums.  Th e boxes cost about $50 from Clean Earth Systems in Florida and come with a 10-mil poly liner.
- Ultraviolet works for biological decontamination an d avoids potentially "exciting" reactions with chlorine bleach.

Paul Sonnenfeld, CPEA

> Date: Tue, 23 Feb 2010 10:04:30 -0500
> Fr om: mrakas**At_Symbol_Here**SMITH.EDU
> Subject: [DCHAS-L] Decommissioning Fume Hood s/Traps
> To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> Good mornin g,
> We're doing some laboratory renovations and I am interested in hearing from others who have decommissioned labs for your ren ovators...
> If you were requested to "evaluate laborato ry fume hoods for the potential of hazardous materials through wipe samplin g", and you knew no perchlorates were ever used, did you test for anyth ing else? (What materials actually CAN be analyzed this way? These are fu me hoods that need a wipe-down, but aren't showing signs of significant c ontamination)
> If you were requested to 'biologically a nd chemically decontaminate traps" for chemistry labs, what did you/your outside contractors do?
> I want tomake sure these areas are safe for the workers, and will contract out this work to a hazmat/ha zwaste specialty vendor, but I want to know what is reasonable to do...I have a fair idea of the history of most of the labs so if there is a 'flow chart' approach that would be very helpful.
> Many thank s!
> Margaret
> Margaret A. Rakas, Ph.D.
> Manager, Inventory & Regulatory Affairs
> C lark Science Center
> Smith College
> Northampton, MA. 01 063
> p: 413-585-3877
> f: 413-585-3786

Previous post   |  Top of Page   |   Next post

The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.