Document 7MYVq2mqzr0vdR1NM52Zom0ka

0R4MI Ml>ltO n~\ tmMusmam* E. I. du Pont de Nemours & Company INCORPOAATTD CHAMBERS WORKS DKCFWATCft. NCW iCAtVY OMt) January 5, 1983 M. J. Fahsel, 1094 Bldg. (E) D. J. Klinke, Firehouse (F) J. R. Martin . Employee Relations Department BOD-1442 Wilmington EXPERIENCE WITH ASBESTOS MONITORING Here is a summary of personal asbestos air sampling - usually partial to full shift duration - unsegregated by activity. The majority of the data are from lagging removal or repair. These data cover the last thirteen months of personal air data for asbestos. Flber3/cc <0.01 0.01-0.09 0.10 0.11-0.57 5.01 8.2 No. of Samples 33 185 2 19 1 1 As you can see, the exposures are remarkably good. We do not use any "disposable" respirators for this work. We use half-face rubber respirators (e.g. Comfo II) with dust/mist/asbestos filters, or with high efficiency filters. Usually it's the dust/mist/asbestos filter. . Please "homogenize" these data in your communications so they are not site-specific. Please call if you have questions. D. T. Lefferts Environmental Health Section DTL/jb DUP 0909169 SC-DP-07595 /s /VW--A' - |^77 - St- 77^, '* ji^Ti iJr < L -vu-l r~ 4 s' dfoi<*0*^-> ^ 0. *2o> 2_ < d.r' - O. r- <./. 0 l* a , > <: 2.0 ^ ^.0 (3 A~vi_ "^6/2. 7 3 1 ^ ? ,1> t>*L / k ualj, o{ flfz.rG'Cno'O - -*0. 1 7^ pitt^/fcc- (mMkS jcC^uiMS. J^+tsXsfL, (7+t<i- >-> ~~ } /&p S*C \ \ / 1 j5'// y DUP 0909170