Document Z4OwVXGXXkoYwL0d6E64owZVd

Into/ Ollice Mr. R. J. Vomac, Manager Ypsilanti Plant Peraonnel and Organization Stall 2 November 19^3 cc W. C. Cooper, D.O. R. Gainey J. Turner D. B. Vaughan G. H. Wolcott Subject: Industrial Hygiene Study ~ Ypsilanti Plant As requested by Mr. J. Turner, Safety Engineer, Ypsilanti Plant, an induetrial hygiene study was completed to evaluate employee exposures to airborne asbestos concentrations. The operations of concern were the injection molding of the molded commutator and armature machining operations. Also, bulk waste samples from these operations were submitted for asbestos analysis. The study, according to supervisory personnel, was completed under normal work conditions. Air sample durations were sufficient to represent employee eight-hour time-weighted average exposures. Results of this study and instrumentation are listed on the attached data sheets. Besed on evaluation of results, data collected, and observations of operations, the employees were not exposed to airborne concentrations of sBbeBtos to warrant a health hazard. The bulk sample test results reveal that all samples contained significant amounts of asbestos. Any handling, labeling and disposal of waste products must be in compliance with OSHA 29 CFR 1910,1001 regulation. It would be prudent that this knowledge be known to any outside contractors handling and disposing of these asbestos laden waste materials. jb Attachment C. E. Plasters, Industrial Hygiene Associate Industrial Hygiene Section Employee Health Services SCF-FORD-3377 PRODUCED BY FORD INDUSTRIAL HYGIENE SECTION ENVIRONMENTAL HEALTH AFFAIRS EMPLOYEE HEALTH SERVICES TpBilanti Plant Departments 452-4, 452-5 22 August 1983 PERMISSIBLE OCCUPATIONAL EXPOSURE LIMIT TO AIRBORNE CONTAMINANTS (PEL): Contaminant Medical Monitoring* Eight-Hour Time-Veighted Average Exposure Limit (TWAE)** Asbestos 0.1 fibers/cc 2.0 fibers/cc Fibers per oc = Fibers of asbestos greater than 5 microns in length por cubic centimeter of contaminated breathing zone air. * Reference Dr. Block's letter dated 2 May 1978. ** TWAE calculated from the following equation: TWAE = (Tl X Cl) 4 (Tp x Cp) 4 ... (Tn X Cn) Ttotal Where Cn = Concentrations measured Tn - Time exposed to Cn Ttotal = amount of time exposed RESULTS Employee/ Soc Sec Number Location General Area Adjacent to No. 1 Machine Hopper Injection Molding General Area Adjacent to No. 3 Machine Hopper Injection Molding E. H. Publiski (385-40-1505) Operator of No. 1 and 4 Machines Injection Molding R. R. OlozevBki (379-34-8928) Operator of No. 2 and 3 Machines Injection Molding C. Lane (405-40-5881) Operator of No. 1 Mechaneer Machine F. Linn (233-50-2774) Operator of No. 2 Mechaneer Machine T. L. Stumbo (371-58-5124 Operator of Lo Swing Lathe B.T. 133&94 Fibcrs/cc ND ND ND ND 0.04 ND ND Type of Sample Bulk Sample Bulk Sample Bulk Sample Location Pellet form Turnings from Mechaneer chip drag Vacuum Unit Type AabestoB Chrysotile Chrysotile Chrysotile Percent 42% 42% 25% ND = Not detectable. Detection limit is 1600 fibers which at air volumes sampled is less than 0.001 fibers per cubic centimeter of air. SO?"7 Cl 50 PRODUCED BY FORD Ypnilanti Plant -2- 22 August 1983 DATA RETRIEVAL NUMBERS s CEP 1432 through CEP l44l INSTRUMENTATION! Bendix BDX-55 personal sampling pumps with open face 0.8 dub AA filterB ANALYSIS: Counting by Ford Motor Company Industrial Hygiene Laboratory Phase-oontrast Microscopy performed by L. Latorre, Industrial Hygienist Senior Bulk by EPA Interim Method (Polarized Light Microscopy with Diapereion Staining) performed by X. Berry, Engineer, Metallurgy Department, Central Laboratory 11/2/83 ford motor company Industrial H/ejionc & Tcxic l-gy Laboratory Accredited & Cs.l'jd Dy American Industrial Hygiuno Association 1107 Cl 51 PRODUCED BY FORD