--0-1306750007-1258661659=:78732 Is the lighting-latex degradation connection about UV? --- On Thu, 11/19/09, Carol Lentzwrote: 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
--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 LentzMichigan 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? SPAN>
Please excuse the cross-postings:
I=E2=80=99m working with a group that works in a secur ed, containment facility. The supply air is one pass, the exhaust is HEPA filtered and air change rates are in the 10-15 ACH. Rubber bands , latex gloves, the gloves on a glove box, rubber stoppers, etc. degrade ve ry quickly in this building =E2=80=93 a matter of months. This causes consternation among my building occupants =E2=80=93 "if latex degr ades so quickly, what is this building doing to me?="
I have done the following: datalogged temperatur e, %RH, CO and CO2 twice, at different times of year, for a week. Fir st set showed extremely low humidity =E2=80=93 below 20%rh =E2=80=93 all ot her measurements within customary. Second round showed %rh in a more normal range =E2=80=93 35-40%rh. Magnetic fields were at or below bac kground. No radioactivity was detected. The building doesn=E2 =80=99t have any weird smells, evidence of mold or water intrusion. T he mechanical system is working as designed, filters in place and without h igh pressure drop, coils clean, etc., according to my building engineers. DIV>
People complain of headaches and stuffy noses, general malaise after working in the building for some period of time. Someo ne has suggested Chinese drywall might be a culprit but I don=E2=80=99t kno w as it quite fits.
Whaddya think? All ideas welcome, at this point.
Thanks,
Debbie
--------------------
Debbie M. Decker, Camp us Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA 95616
(530)75 4-7964/(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
< /BLOCKQUOTE>
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