Document 7O2Dw5JoV08xr0a8q9e5yrLzo

O' COHFOTUU. S. C. EndersPlant Manager f^sst-***** 4 Oepnmc*t D. P. GlazierIndustrial Hygiene Int' Company Correspondence fn Cede oi ____ ____________________ June 2 3, .1 9.76 3 '4'0^ c int/ C 1,1"f Stamping b Trenton As sembly Chemical * Employee &/ fl.| Chrysler Ind. F elattons Center ^7u$ 453-C3-00 V,MS Nw"M' 417-05-19 ...... SEMI-ANNUAL ASBESTOS SURVEY In compliance with Section 1910. 93a, (0, of the OSHA Rules and Regulations, the writer conducted an investigation of employee exposure to airborne asbestos dust at the Trenton Chemical Plant during the month of May. The individual results of this survey are listed opposite the corresponding job or area location on the attached data sheets. It should be noted that samples (2), (23). i 36). 145) and (51) were obtained concurrently and immediately adjacent to air samples collected by Mr. C. Fedoronko of the Michigan Department of Public Health during the MIOSHA investigation conducted on May 20. 21 and 26. 1976. While none of the air samples obtained indicate employee exposure in excess of the current OSHA permissible exposure level. 'i~TTifmahl anaairia (l v bfc r in regard to compliance with the July 1, 1976, standard. The PtyeyffireYl1 ojS'ei-ation# have mtiifliWfiWnWfWtWOPWHIfdifi** ot'eraployee expoeure, to airbovn*. asbestos dudf. Borderline control exists at the #1 and *2 Bipel presses; but employees stationed at the #3. r4 and f5 Bipel presses were found to have asbestos exposures which are in excess of the July 1, 1976 allowable limit. It is evident that a<fiMttifllfeM4GiC%S(WroiS3M6ia'CS placards have fatTed'tOi-44~qi>4tly controt tirWrrne^aibesnydiay levels at the Bipel press work stations. IndtMfcrtai-Wygiwe s that cdMGttfire of the in dividual trand scales in an e*MHatlbea(dBaebhc#d would nonf ref of airborne asbestos dust at the Bipels. This or another technically feasible engineering control measure which would provide uncontaminated air to the individual Bipel press operator's breathing zone should be investigated by the appropriate plant personnel and discussed with this department prior to installation. MandattSrrjPpaapoiufci pet*ctivu*quip- ment in the form of approved air purifying'reepiraWrs will provide temporary under Section 1910.93a, (d). (l),(i) during the time period necessary to install the required engineering controls. The employees stationed at the east and west diedvbrak* loading stations on the Conforming Matrix washer were found to have asbeaSftanpxposiif es of 4.2 and > l fiber* p#T cubic centimetepof sir. It is our understanding that PLAINTIFF'S EXHIBIT CHR-173 S. C. Enders II Re: Semi-Annual Asbestos Survey 6-23-76 the slot grind line "defuzzera" will become operations! in the near future. The "defuzzer" consists of a rapidly rotating cylindrical brush located in an exhaust ventilated enclosure. The "deftutyr" cleaning operation is intended to reaoner'th*iooe asbestos fibsri's which adhere to the brake shoe after the slot grinding and flat finishing operations. The planned retnavs&vlthe'erieeae'aab'eVto^fib^Fs should the ^sgltitnds^*-* * the Conforming Matrix washer and else where when these parts must be inspected, loaded or assembled by hand. d ai personal equipment for the employees stationed at the washer during the time period necessary to install the required engineering controls. of the July 1, > air samples iuse they were not collected over an eight hour period. For example, air sample (45) wetgh-up, which is a time weighted average or TWA, is below the new OSHA limit, while air sample (44) weigh-up, which is not aTWA, is in excess of the two fiber standard. It is, therefore, evident that will 1>wyfejljiyisd4t the Jl'flfft i nn aiflbiAHRdopa^Une puckinf: sys order ts 3K3fiiiS8^&rgltOdettTWt|ttMMSLgniide of employee exposure at these job locations. mate rial %^ing of asbestos waste materials itemskw in order to prevent excessive airborne levels and vacuum cleaning equipment is evident throughout the plant, yet ` ear reluctant to use this equipment. E^UpS5ye1r fere imtr gloves, rags and hand*.to-eleanrupaabestos waste tbnl during the course of this survey. It is the responaitanagemefit to explain the rationale behind the use of the vacuum cleaning equipment and to enforce its usage in those areas where failure to do so will result in elevated airborne asbestos levels. D. P. GLAZIER Industrial Hygienist Attachment cc J. A. Lardie E. R. Lombard N. McCallum K. G. Mitchell W. M. O'Brien G. A. Sattelmeier Data Sheet TRENTON CHEMICAL ASBESTOS May 1976 Location Current OSHA Standard July 1, 1976 OSHA Standard Friction Products Buildine (1) Personal air sample, #1 Bipel operator (2) Personal air sample, #1 Bipel operator (time-weighted average concentration) (3) Personal air sample, #11 and #12 hot press operator (4) Personal air sample, #2 Bipel operator (5) Personal air sample, #3 Bipel operator (time-weighted average concentration) (6) Personal air sample, #4 Bipel operator including cleanup operations (7) Personal air sample, #15 and #16 hot press operator (8) General air sample, immediately adjacent to the #17 hot press (9) General air sample, immediately adjacent to the #3 Bipel press 110) Personal air .sample, #5 Bipel operator including cleanup operations Concent ration (Fibers, greater than five microns in length, per cubic centimeter of air) 5.0 2.0 1.6 1. 5 1.0 1. 8 3.9 2. 0 1.0 0. 7 0. 2 3. 1 t t \-- / Data Sheet - continued II Loc ation Concent ration (11) Personal air sample, #21 and #22 hot press operator (12) Personal air sample, #6 Bipel operator (13) Personal air sample, #7 Bipel operator and #26 hot press operator (14) General air sample, immediately adjacent to the #26 hot press (15) Personal air sample, #27 and #28 hot press operator (16) Personal air sample, #8 Bipel operator (17) General air sample, immediately adjacent to the #22 hot press (18) Personal air sample. #17 and #29 hot press operator (19) Personal air sample, #8 Bipel operator during cleanup operations only (20) Personal air sample, loading and unloading disc brake shoes at the Myr oven aluminum gasket bonding operation (21) Personal air sample, inspecting and packing disc brake shoes after Myr oven bonding, in cluding cleanup operations (22) Personal air sample, champ grinder operator #152774, Mopar line (23) Personal air sample, champ grinder operator #152774, Mopar line, (time-weighted average concentration) 0. 8 0. 3 0. 7 0. 7 0. 2 0. 2 0. 7 0. 7 1. 1 0. 5 2. 6 0. 4 0. 1 Data Sheet continued m Location Concentration (24) Personal air sample, Mopar line, proof testing on machine #152775 (25) Personal air sample, packing drum brakes into cardboard boxes on the Mopar line (26) Personal air sample, sealing replacement part boxes on the Mopar line (27) Personal air sample, grinding drum brake shoes at the belt sander which is adjacent to the overhead ovens (28) General air sample, directly adjacent to the #2 overhead oven at breathing zone level (29) Personal air sample, loading the #1 overhead oven (30) Personal air sample, #1 slot grinder inspector (31) Personal air sample, #2 proof test and slot grind operator (32) Personal air sample, #2 slot grinder inspector (33) Personal air sample, #3 proof test and slot grind operator (34) Personal air sample, #3 slot grind inspector (35) General air sample, five feet northeast of the #3 proof test operation (36) Personal air sample, #1 OEM grinder operator (time-weighted average concentration) 1.4 2. 8 0. 4 0. 7 0. 5 0. 2 < 0. 1 1. 7 0. 8 1. 3 1.0 < 0. 1 0. 4 / Data Sheet continued Location (37) Personal air sample, packing drum brakes on the #2 OEM line (38) Personal air sample, #1 and #2 saw line operator (39) Personal air sample, unloading drum brake linings after oven forming at the #1 and wZ saw lines (40) Personal air sample, aluminum gasket application (41) Personal air sample, loading disc brake shoes into the west side of the Conforming Matrix Washer (42) Personal air sample, loading disc brake shoes into the east side of the Conforming Matrix Washer (43) Personal air sample, weigh-up and H skip hoist loading (44) Personal air sample, weigh-up and #2 skip hoist loading (45) Personal air sample, weigh-up only (time-weighted average concentration) (46) Personal air sample, loading the #1 skip hoist (time-weighted average concentration) (47) Personal air sample, unloading the #4 lodige (time-weighted average concen tration) (48) Personal air sample, unloading the #4 lodige mixer IV Concent ration 0.7 1. 2 0.2 0.5 4. 1 4.2 1.0 2. 3 1.2 0. 1 0. 3 0.7 Data Sheet - continued Location (49) (50) Personal air sample. Tennant sweeper operator Personal air sample, janitor, cleaning rest rooms and skip hoist area Chemical Building (51) Personal air sample, loading the Day blender with resin grade asbestos (52) Personal air sample, loading the Day blender with Union Carbide 244 resin grade asbestos (20 bags) (53) Personal air sample, loading the #1 Readco blender V Concentration . 0. 1 0. 2 0. 6 0. 4 0. 5 All determinations of airborne asbestos fiber concentrations were made by the Industrial Hygiene Laboratory using the OSHA dictated membrane filter method at a magnification of 430x with phase contrast illumination.