From: "Kohler, Christopher E" <cekohler**At_Symbol_Here**IU.EDU>
Subject: Re: [DCHAS-L] perchloric acid fume hoods
Date: March 3, 2013 9:39:11 AM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <A4BDFFCAC336824B8501F8FA6E1DA2D4D2BE07AA23**At_Symbol_Here**>

The gentleman's name at ORNL is Marwan Bader (baderm**At_Symbol_Here** 

They remediated a system for me about 10 years ago. Its wise to do this correctly. Our system was heavily contaminated. They were very competent.

He had a separate company set up to perform the remediation. If you have difficulty finding him I can look through my paper files and get you the name of the company.


Chris Kohler
Laboratory Safety Manager
Indiana University
1514 E Third Street
Bloomington, IN 47405

From: DCHAS-L Discussion List [dchas-l**At_Symbol_Here**] on behalf of Jeskie, Kimberly B. [jeskiekb**At_Symbol_Here**ORNL.GOV]
Sent: Saturday, March 02, 2013 9:58 AM
To: DCHAS-L**At_Symbol_Here**
Subject: Re: [DCHAS-L] perchloric acid fume hoods

The program that Rick and others followed was from ORNL. I can put you in contact with the program lead if you would like to talk to him about the approach

Sent with Good (

-----Original Message-----
From: Harry Elston [helston**At_Symbol_Here**FGI.NET]
Sent: Saturday, March 02, 2013 09:28 AM Eastern Standard Time
Subject: Re: [DCHAS-L] perchloric acid fume hoods

Mary Beth (and list):

Rick Kelly at LLNL wrote a very good piece on perchlorate hoods.  It is found here:

Kelly, Richard.  Disassembling a perchlorate-contaminated ventilation system.  Chem. Health Saf. 2000, 7(3), 5.

The DOI is here:

If you search on ScienceDirect, you will need to search Chemical Health and Safety, since the article was pre-"Journal of" days.


Harry Elston, Ph.D., CIH
Editor, Journal of Chemical Health & Safety

On Sat, Mar 2, 2013 at 7:08 AM, Reinhardt, Peter <peter.reinhardt**At_Symbol_Here**> wrote:
I recall an excellent presentation, years ago, from folks at from a large government lab who discovered this problem for many of their labs and came up with a good approach. This was part of a DivCHAS program at an ACS national meeting. Perhaps someone can remember the specifics, or if it was written up in JCHAS. -- Pete Reinhardt, Yale EHS

On Mar 1, 2013, at 9:18 PM, "Lanza, Mary Beth" <MaryBeth.Lanza**At_Symbol_Here**WEYERHAEUSER.COM> wrote:

Does anyone have experience with the removal of perchloric acid hoods from a lab?  Any information on the subject and references to resources capable of performing this task would be greatly appreciated.  I do realize there is a special procedure and tremendous cost associated with this, but I wanted to get a better idea of specifically what is involved.

Thank you.

Mary Beth Lanza
Scientist - Infrared Spectroscopy
Weyerhaeuser Analytical Chemistry
WTC Chemical Hygiene Officer
(253) 924-6013 (desk)
(253) 924-6290 (lab)
(253) 924-6654 (fax)

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