Please note: Older hoods with grey cement board liner probably contain entrapped asbestos fiber in the cement! Bob Haugen KEWAUNEE -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Ringen, Sonja G. Sent: Tuesday, February 23, 2010 2:27 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: Re: [DCHAS-L] Decommissioning Fume Hoods/Traps Greetings, We are replacing 14-18 fume hoods and have been considering how to decommission the hoods and ductwork. ANSI/AIHA Z9.11-2008 (Laboratory Decommissioning) provides the framework of our plan. It all starts with a needs assessment, and since you know the history of most of the labs, you have a good beginning. In our case, some of the hoods are >40 years old and memories are somewhat vague. However, we do know that certain types of research have never been done in the labs, including biological work. One of our largest concerns is disposal of the items. We know that acids, bases, and light solvents have been consistently used over the years. Therefore, wipe tests for heavy metals (the RCRA 8 plus Be and Ni), PCB's, asbestos (not only transite liners, but also in the ductwork), and radioactive materials will be taken using NIOSH procedures wherever possible. Based on the initial assessment, we'll have a better idea which hoods are of concern, and which materials are causing the concern. This applies both to the contractor removing the items, and the final disposal of the items. The appendices in the ANSI/AIHA Z9.11-2008 are helpful with choosing analytes, guidance for wipe sampling, regulated levels, and hazard ranking. Sonja Ringen Office of Safety, Health and Environment NIST/Boulder 325 Broadway, MC 173.02 Boulder, CO 80305 Phone: 303.497.7389 Mobile: 303.961.9251 -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of Margaret Rakas Sent: Tuesday, February 23, 2010 8:05 AM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] Decommissioning Fume Hoods/Traps Good morning, We're doing some laboratory renovations and I am interested in hearing from others who have decommissioned labs for your renovators... If you were requested to "evaluate laboratory fume hoods for the potential of hazardous materials through wipe sampling", and you knew no perchlorates were ever used, did you test for anything else? (What materials actually CAN be analyzed this way? These are fume hoods that need a wipe-down, but aren't showing signs of significant contamination) If you were requested to 'biologically and 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/hazwaste 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 thanks! Margaret Margaret A. Rakas, Ph.D. Manager, Inventory & Regulatory Affairs Clark Science Center Smith College Northampton, MA. 01063 p: 413-585-3877 f: 413-585-3786 The information transmitted is intended only for the person or entity to wh ich it is addressed and may contain confidential and/or privileged materia l. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, p lease contact the sender and delete the material from any computer, multime dia hand held device or phone service. Thank you.
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