|
asb�sCOS". Habbellite is composed of a sr�ixrure of cement, limestone, copper and magnesium
<br />compounds, and proprietary addirives. According to the manufacturer, Hubt�ellste flooring is Fixc
<br />resistant, chemical resistant (includingsolvents), non-s�axltiii�g, and stario-disseminaring.
<br />Asbestos in "Soft" Concrete
<br />In 1998, the I;l�rl issued a memo alerring industry and labor organizarions of the potenrial fn�
<br />asbestos in "soft" concrete in the roofs of buildings. An inspecrion of a roof repair project on a
<br />government l�uilding revealed that the concrete material used for forming the roof surface in 1934
<br />contained a high concentrarion of asbestos.
<br />The asbesCas�concrete �nix�ure is called "soft concrete." Apparently, when the government building
<br />was built, asbestos was mixed with concrete ca make a Iighter and easier to use mixture than regular
<br />concrete. It was then used Eor creating the slopes on the roo£ The soft concrete layer ran between
<br />two and 10 inches in thickness on the roof of the inspected building. Analysis of the concrete
<br />revealed it had an asbestos content of beeare�n two and 10% by weight.
<br />��C Che tiine the memo was issued, �'�,tii��r4 had no data on how many buildings might have soft
<br />concrete on their roofs. It is possible that such a mixture was used on other roofs and, therefore, its
<br />presence could pose "significanthealth hazards during demolition or repair work". I�u�therrnore,
<br />employees occupying a building might be exposed to the asbestos from the roofs materials if there are
<br />openings in the building, particularly during re-roofing work.
<br />Military Formulation Insulation Cement
<br />�v�iliCaiy Formularion of Super Powerhouse insularion cemcnt (produced from 1957 to 1971)
<br />contained 5% chrvsaute asbestos and was developed to conform to gavcxn�n���t specificarion. This
<br />product was manufactured and sold exclusively for L7.$. government militaryinstallarions. ('�'he
<br />commercial formularion without asbestos continued in producrion.) ]3or1� products were dry,
<br />�ni:ciuzes containing spun mineral-wool, hydraulic setting binders, clays and other ingredients. Its use
<br />in or on concrete is not known.
<br />SOURCES:
<br />U.S. Envieonmcntal Pcoeccrion Agency Re�;ipn 4, Dcmaliliore Praciirer il nderthe�?€.rberto.�� ['V�SFi/� P, unclateti.
<br />CaliforniaDepartment ofToxic Substances Cuntro� "Public i,ivoiveni�nr ��actSl�ect,=}'�' l�ecpmmends
<br />3tesux�acui�; of Serpentine G�avcl Roads Uased � Ciarden \�allcy Study," At>ril 2005.
<br />Minnesota Pollution ControlAgency, IF.s� {,�,rti:}�fR? �rrM.,rrrPernritr#3.��, 5e�7mm1�er2004.
<br />TJ.S. Environmental Protection A�eficy Region 5, Air E�force,xa«ir lwcogc�Ax�, electxonic communication co
<br />1•y•�r- Olah, C;iti•r,ens Ar Safe Water Around �3adbef, May 27, 2005.
<br />Wisconsin Department ofNat��x�i Resources,Air IVlanagemenr. l�ivisic�c�, electronic co�a�municari�« to l,aura
<br />C?lah, Citizens for Safe �`: ;rr Around �3ad�;c�•, N�y 4,2005.
<br />�.$. �nviro3ir�entai Protection Agency, l�iructor:�tc of °i°echisical Support, I�azarc� Information Ii��li�tin,
<br />1'ntenriaL Asbestos Contamination in Soft Coneccre Infc�ra�aaon, October 8,1998.
<br />4�.�. Li�4.,L�sr.���,�.1 Pa�,r�cti��a h�co��, l�f fik Uf I�,�,r� �.iia:, I�srxi�o- �.r�� 'I axic �,,�fs�r.cs<.. � L-i� tiyf
<br />L}ullu�uu Lki+eucnuun orud 1�nics, J�sLtiswa, f`�bliraoun c�f Idcrrrif�up� Im6o�mahan, �Ac3�r�1 ll��gxas�, ����v• S+�
<br />15Stt' �l' 1'l�,+C' `:•la •;S7 �k ii�-L] , Ttir-t��, r1'1:Su;.rr I?, 177i1
<br />ThisF'u�t.$'heeti.s r.'ntsnded tofrii: r•�5�-,*ovvr.srr. of thej�otenliulfaras$estasns or on cancrede iti.i��Mr{S,�4s'fr ,;��; at US. +�'��+s�
<br />��.,,:: atJCllf I70i tItGL#StUC A��ii kna�vn LL-p:.�+u,4� �A�� a��:k:,trn
<br />1 �.4��.5,�nn�� .�:':�r � ��I� _��.-
<br />
|