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DEPARTMENT OF PUBUC HEALTH : ;-
Bureau (f Occupational Health' 1449 Teaple St., Suita 106
'^pslas, CtlKocnll 90026 - ... <
NOV 22 136$ . _
Hmsbtr 22, 1968 ,
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Califenit Xoarlitj Ccopany
758 Colorado Boulevard Los Angeles, Califorala 90041
Deer Slrai
'Enclosed la a copy of tho report of our industrial hygiene atudy of axpoauraa to asbestos duae at tha Bavarly Hi11a High School eonatruetloo '* site* This atudy vaa made at tha. request of tha California Division of
Znduatrlal Safety*
Tha operation studied involved i:he application of a cenantitlou' firs retardant material, Monococa' ', to structural "1" beans by naans of.
a pnaunatlc plaster gun assembly. . Atnospheric concentrations of asbestos- containing dust vara found to ba low on a count basis. However, on a weight basis, exposures ware touid to exceed our suggested Threshold Lisle Value for asbestos dust*
Therefore, because of the added carcinogenic properties of asbestos, -
recoBiaendatlons for additional personal protection are offered In this report*
Ve wish to thank Msssi t. Ray Rothfelder and Doyle D. Nigh for their '
cooperation during "he conduct of this study.
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Very truly yours,
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Thonas H. Milby, M.D., Chief
! ,*Bureau of Oca patlonai Health
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Hector P. Blejer, K.D., D.I.H. . . '
Medical Officer
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DEPARTMENT OF PUBLIC HEALTH
Bureau of Occupation*!. Healthy-.V\ * 1449 leaple f.t., Suita 106 ** **" %T'i#l*a Califotni* 90026 ' ... "
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Nevaaber 22. 1968 ?
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NOV 22 196S
California &><*Utj Ccopcay
7S8 Colorado Boulevard Lot Angeles, California 90041
Dear Slrsi
`Enelosed ia a copy of the report of our industrial hygiene study of exposures to asbestos dust at the Beverly Hills High School construction site. This study vas made at the. request of the California Division of
Industrial Safety.
The operation studied involved, r.he application of a ceaantltlou ' fire retardant aaterial, Monococet s to structural "X" beans by naans of
a pneuaatle plaster gw assembly. .Atnospherlc concentrations of asbestos- containing dust were feund to be low on a count basis. However, an e weight basis, exposures were found to exceed our 'suggested Threshold Llait Value for asbestos dust.
Therefore, because of the added carcinogenic properties of asbestos.
reeosmendations for additional personal protection are offered In this report.
Ve wish to thank Massi i. Bay Bothfeldet and Doyle D. Nigh for tb'elr ' coopers .-ion dux ing 'he conduct of this study.
Very truly yours. .. y
Thocias H. Milby, K.D.. Chief
/
1 `Bureau of Occi patlonaT Health
HPB/ld esc.
Hector P. Blejer, K.D., D.X.H. Medical Officer
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