Document xzoXXz6067yrOjJDKynNanY1E

DownloadSearchable PDFRandom document
To-- Name S. C. Enders From-- Name L. Redmond SuOiecI: Asbestos ,. nrpamnfni. . Mgr.- Friction Products lVp.irlnu.nt Industrial Hygiene Dust Intar Company Co. .. -pondt .o File Code Divimrn Chemica1 Divi *ion Personnel April 3. 1972. Pl.int OMiCo C ** N<i**>* Trenton Chenicil Pijn| >Mici C:`.vi NumDCf Highland Park Ac Che requesc of Mr. E. R. Lombard, samples were obcained on March 21. 1972, Co determine asbescos dusc concencracinns creaced by Che opera cion of a Tennanc rider type vacuum sweeper. The resulcs, reporced as fiber counts, are Lisced on che accached data sheec. I EXHIBIT- CHR-26 Discussion The chreshold limic value for asbescos dusc was escablished ac 5.0 fibers per milliliter greater chan 5 microns in length. As indicated on the data sheet, airborne dust concentrations in the breathing zone of che driver of che Tennanc Sweeper ranged from 1.5 co 2.7 fibers per millilicer of air. Samples collected along both sides and behind che sweeper indicated chat airborne asbescos concencracions of 0.7 to 1.6 fibers per milliliter of air were created while it was operating. The data obcained during this survey indicated chat che util ization of the Tennai-t Sweeper did not create concentrations of asbescos dust in excess of che limit established by Federal statute. hm Attachment cc: W. F. Ravineer R. F. Rovers W. T. Diehl D. L. Eschelbach R. T. Gaskill vr. L. Knapp, M. D. T. J. Lang Z. R. Lomba rd R. D. McIntosh, M. D. r . E. Reoucci J. G. Shephe rd N. A. Trombley 84-110**3?9 P*v 10-7C Louis Redmond Industrial Hygienist Data Sheet Trenton Chemical Friction Mater: xiilding Asbestos Concentrations l 1471- Fibers of Asbestos Location per Milliliter of Air Threshold limit value (fibers longer than 5 microns) 5.0 Driver of Tennant Sweeper,driving on aisle S Driver of Tennant Sweeper,driving com pletely around outside aisle of building Walking alone both sides and behind Tennant Sweeper Driver of Tennant Sweeper, driving com pletely around outside aisle Walking along both sides and behind Tennant Sweeper 2.7 1.5 0.7 1.8 1.6 The samples were collected on membrane filters and Mine Safety Appliances Company personal monitor pumps.