From: 8524828hau**At_Symbol_Here**COMCAST.NET
Subject: Re: [DCHAS-L] Chlorine Dioxide Decontamination
Date: January 18, 2012 12:14:11 PM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <4F167D32.8648.0091.0**At_Symbol_Here**>

Have you considered using vapor-phase hydrogen peroxide, an agent often used to decontaminate small rooms in BLS-3 labs and equipment items in preparation for their removal from BSL-3 labs?

I suggest consulting with your agency's environmental compliance officer (or equivalent) about the intentional release of chlorine dioxide outdoors.  Release from laboratory HVAC systems via hoods is exempt as a "bench scale research" activity.  However, there may be regulatory implications for intentional outdoor release.  I have encountered this distinction for other hazardous gases for which researchers wished to release outdoors to test remote sensing devices. 

David Haugen (retired)

From: "Eric Clark" <erclark**At_Symbol_Here**PH.LACOUNTY.GOV>
Sent: Wednesday, January 18, 2012 10:04:29 AM
Subject: [DCHAS-L] Chlorine Dioxide Decontamination

Hello DCHAS,
I'm having a centrifuge decommissioned that was used in the tuberculosis lab for many years.  The company that's coming in to do the decontamination work is the same company that services the biosafety cabinets and fume hoods.  This is a large lab with 100+ employees, so ideally I'd like for them to do the work outside - perhaps in a cordoned off section of the parking lot. 
Has anyone got any experiences, thoughts, or warnings about this you'd like to share? 
Eric Clark, MS, CCHO, CHMM
Safety & Compliance Officer
Los Angeles County Public Health Lab

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