Document k9a1jZvQd9wv5dDrwq884gegn

INTERNAL correspondence UNION CARBIDE CDRPQPA i lUN p.o box 579. A625 royal ave METALS DIVISION NIAGARA FALLS. NEW YORK 1*2302 To (Name) D-vision Locauon Area Copy to R. E. Byrne D. F. Kapral F. L. Smith Niagara Falls, NY Dace January 31, 1983 oroe.engo.0L TECHNOLOGY - Product Development Area Air Monitoring Dust Count Report Format t 530-10902 J. B. Rouse, UCC Law Department, has reviewed the Asbestos Dust Monitoring report insert pertaining to Procedures, Limits and Conditions. A couple of minor revisions have been recommended, see attached. I suggest we wait until the insert has cleared with the Labor Section before making any revisions. BLI/jl Attachments B. L. Ingalls A 2 0 sc.` r\:iECL.iVfc.D JAN 31 1983 UCC-CALIDRIA correspondence RECEIVED UNION CARBIDE CORPORATION p.o 57abox *ssJMdyAi}833= METALS DIVISION NIAGARA FALLS. NEW YORK 1^302 ----------------------------------------------------------------------------------------------------------------------------- '^_Dr_R0USE------ To (Name) OiviSiO1^ Location Area J. B. Rouse UCC Law Dept Section E-1280 Old Ridgebury Road Danbury, CT 06817 Copy co Messrs: R. E. Byrne D. F. Kapral J. L. Myers Date January 17, 1983 Orginatng Dept TECHNOLOGY - Product Development Area SwOtect Air Monitoring Dust Count Reports Format . 10902 Pursuant to our telephone conversation of January 14, 1983, enclosed you will find the insert to our dust count reports issued to customers which covers sample equipment and test procedures, comments regarding current regulations, calculations for fiber determinations and limits and conditions. Would you please review the current language of the attachment and let us know if it meets with your understanding and agreement. References regarding sample equipment, test procedures and the comments are currently being followed as stated. /jl Enclosure C^2 B. LTTngalls ; jjw-wTt jf I*** , , 'na ;~ 0^ &,L- jfM. ^ T h "fy -r "" J A . (V*' V* SAMPLE EQUIPMENT AND TEST PROCEDURES Sampling and dust counting are carried out in accordance with OSHA Regulation 1910.1001, based on NIOSH Analytical Method PSCAM 239 and OSHA methods; referenceOccupational Safety and Health Administration Methods. W. C. Dixon, pp 431, NBS special publication No. 506, U.S. Department of Commerce, November 1978. Battery-powered air pumps(M.S.A. type), calibrated to 2 liters per minute, are used to collect personal breathing zone and environmental samples on Millipore membrane filters of 0.8 micron porosity. Fiber counting is performed on a Nikon phase contrast microscope at 400X utilizing a Porton. reticle for sizing and field definition. Two results have been reported for each sample - they are: 1. Chrysotile Asbestos - All fibers having an aspect ratio >3 and a length >5y that are in the operator's judgement, chrysotile. In the ' event of doubt or the absence of further information, any fiber having the above physical dimensions is counted as chrysotile. 2. Possible Amphibole Asbestos - All amphibole asbestos fibers having an aspect ratio 23 and a length >5u. In the event of doubt or the absence of further information, any fiber of similar appearance and dimensions is counted as amphibole asbestos. COMMENTS The OSHA regulations permit a maximum limit of 2 fibers greater than 5 microns in length per cubic centimeter of air sampled on the basis of an 8-hour, timeweighted average (TWA). The formula Ci.T,i + Cc,Tl, + CnTn describes the TWA where C= fiber count in fibers/cc and T= time. The regulations also stipulate a ceiling concentration of 10 fibers/cc greater than 5 microns which is not to be exceeded at any time. LIMITS AND CONDITIONS 1. In compiling this report. Union Carbide followed procedures which it believes to be accurate and reliable but there may be other methods for evaluating asbestos fiber emissions which may produce different results 2. The air monitoring results reported herein are not necessarily repre sentative of the results which may be found at different locations or under different operating conditions. 3. Any use of or reliance upon the data or other information contained herein by yourself or any other party shall be without any recourse to or liability on the part of Union Carbide. 4. The breathing of asbestos dust may cause serious bodily harm and Union Carbide majces no warranty or, guei*e*t-ee that the results contained herein i'ndicafe-safe-levels of exposure. It is the responsibility of any user of asbestos or asbestos-containing product to ensure that safe handling procedures are employed and that applicable government regulations are complied with. Appropriate literature and other information concerning asbestos and health or regulations are available upon request. 5. Regardless of the results of these tests you should consider the advis ability of further air monitoring. TEST RESULTS The details of sample collection and resultant fiber counts are listed in the attached table(s).