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---

Demystify: 

Date: Thu, 19 Nov 2009 12:14:19 -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: AL CLANCY <al.clancy**At_Symbol_Here**SBCGLOBAL.NET>
Subject: Re: Latex degradation, low humidity, Chinese drywall?
In-Reply-To: <8ea708400911191118m167205ccu88ff4be868980a77**At_Symbol_Here**mail.gmail.com>

--0-1306750007-1258661659=:78732

Is the lighting-latex degradation connection about UV?

--- On Thu, 11/19/09, Carol Lentz  wrote:

From: Carol Lentz 
Subject: Re: [DCHAS-L] Latex degradation, low humidity, Chinese drywall?
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Date: Thursday, November 19, 2009, 11:18 AM


What about the quality of the lighting? It might explain the hasty degradat
ion of latex, and the headaches. Low humidity (<40%) for MY nose could be t
he culprit for stuffy noses. Perhaps it isn't just one thing?
=C2=A0
Carol Lentz
Michigan State University

=C2=A0
On Thu, Nov 19, 2009 at 11:04 AM, Laurence Doemeny  wrote
:



Have you checked to ensure that all traps in sinks and floor drains are not
 dry?
=C2=A0

From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of De
bbie M. Decker
Sent: Wednesday, November 18, 2009 11:35 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Latex degradation, low humidity, Chinese drywall?
=C2=A0
Please excuse the cross-postings:
=C2=A0
I=E2=80=99m working with a group that works in a secured, containment facil
ity.=C2=A0 The supply air is one pass, the exhaust is HEPA filtered and air
 change rates are in the 10-15 ACH.=C2=A0 Rubber bands, latex gloves, the g
loves on a glove box, rubber stoppers, etc. degrade very quickly in this bu
ilding =E2=80=93 a matter of months.=C2=A0 This causes consternation among 
my building occupants =E2=80=93 "if latex degrades so quickly, what
 is this building doing to me?="
=C2=A0
I have done the following: =C2=A0datalogged temperature, %RH, CO and CO2 tw
ice, at different times of year, for a week.=C2=A0 First set showed extreme
ly low humidity =E2=80=93 below 20%rh =E2=80=93 all other measurements with
in customary.=C2=A0 Second round showed %rh in a more normal range =E2=80
=93 35-40%rh.=C2=A0 Magnetic fields were at or below background.=C2=A0 No r
adioactivity was detected.=C2=A0 The building doesn=E2=80=99t have any weir
d smells, evidence of mold or water intrusion.=C2=A0 The mechanical system 
is working as designed, filters in place and without high pressure drop, co
ils clean, etc., according to my building engineers.
=C2=A0
People complain of headaches and stuffy noses, general malaise after workin
g in the building for some period of time.=C2=A0 Someone has suggested Chin
ese drywall might be a culprit but I don=E2=80=99t know as it quite fits.
=C2=A0
Whaddya think?=C2=A0 All ideas welcome, at this point.
=C2=A0
Thanks,
Debbie
--------------------
=C2=A0
Debbie M. Decker, Campus Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA=C2=A0 95616
(530)754-7964/(530)752-4527 (FAX)
dmdecker**At_Symbol_Here**ucdavis.edu
Co-Conspirator to Make the World A 
Better Place -- Visit www.HeroicStories.com and join the conspiracy
=C2=A0
=C2=A0

--0-1306750007-1258661659=:78732



Is the lighting-latex degradation connection 
about UV?

--- On Thu, 11/19/09, Carol Lentz <lentzcw**At_Symbol_Here**GMAIL.
COM> wrote:


From: Carol Lentz <lentzcw**At_Symbol_Here**GMAIL.COM>
Su
bject: Re: [DCHAS-L] Latex degradation, low humidity, Chinese drywall?
T
o: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Date: Thursday, November 19, 2009, 11:18 AM
<
BR>

What about the quality of the lighting? It might explain the hasty deg
radation of latex, and the headaches. Low humidity (<40%) for MY nose co
uld be the culprit for stuffy noses. Perhaps it isn't just one thing?
 
Carol Lentz
Michigan State University


 
On Thu, Nov 19, 2009 at 11:04 AM, Laurence Doemeny
 <ldoemeny**At_Symbol_Here**cox.net> wrote:




Have you checked to ens
ure that all traps in sinks and floor drains are not dry?
 


From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list
.uvm.edu] On Behalf Of Debbie M. Decker
Sent: Wednesda
y, November 18, 2009 11:35 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Latex degradation, low humidity, Chinese drywall?
 
Please excuse the cross-postings:


    

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