Document Dv64NKbnb7EpX7Y8dwz695KXa

November 6, 1973 PLAINTIFF'S EXHIBIT DOW-641 R. C. Goheen Styrene Plastics Maintenance 759 Building cc: N. S. Kigar, Styrene Plastics Maintenance, 759 Building PERSONAL MONITORING RESULTS FOR ASBESTOS The results of the personal monitor worn by Ray Bowers while bagging and stripping a reactor in 658 Building are as follows: Master Number 27886 Operation Bagging and stripping asbestos insulation in 658 Building* Date 10/23/78 IHG Wearing respirator during operation Time (min.) 24.8 Asbestos fibers/cc 0.65 2.0 The results above indicate that no overexposure would have occurred even without the use of respirator protection. The good use of controls such as water, roping off the area, disposing in plastic bags and posting of warning signs should be commended. The only additional suggestion would be the use of rubber boots during asbestos demolition projects. S. L. S. Dombrowski Industrial Hygiene Laboratory Health and Environmental Research 1803 Building 636-2939 jdb ST000I 687 407360 yy<7 t /--/-- r. -t2Z4X December 11, 1978 J. J. Mikusko ICPD Maintenance 209 Building __ cc: W. Whelton, IC/SP Maintenance, 800 Building THE RESULTS OF THE PERSONAL SAMPLES TAKEN FOR ASBESTOS ON DECEMBER 4, 1978, IN 107 BUILDING Man Bill Hoffman pipecoverer Ed Kusmierz - multi craft . 8-hour TWA permissable exposure Time 315 315 Volumn (1) 559 578 F/cc 0.08 0.19 2.0 The results were without regard to respiratory protection. If you have any questions contact me. R A-OJLuta R. A. Olson H&ER Industrial Hygiene Laboratory 1803 Building 517-636-0221 If ST0001688 407361 CRI NUMBER R&D REPORT DOW CHEMICAL U.S.A. RESTRICTED: for use within The Dow Chemical Company only. DE p ARTMENT HES USA Industrial Hygiene Laboratory TITLE omem- LAoCrtA.uWiK HEH2.1-1-38(16) CATS ISSUED January 11, 1979 ACCOUNT NO. PROBLEM NUMBER 367 9085000 ' INDUSTRIAL HYGIENE SURVEY FOR ASBESTOS FIBERS, POWER MAINTENANCE, SOUTH POWER, 500 BUILDING, MICHIGAN DIVISION, AUGUST 9, 1978 F. L. Sabel REVIEWER'S SIGNATURE R. W. Bohl DESCRIPTIVE SUMMARY WITH CONCLUSIONS: -d-i&J? /-/S.-T?_________________________________ (Include in this spoce references to data books, and to earlier related reports, patents and publications*) An industrial hygiene survey was conducted at South Power, 500 Building, to evaluate employee's exposures to asbestos fibers during the application of asbestos insulating blankets to a large steam operated turbine generator. A personnel breathing zone sample of the "B" maintenance man was col lected with a battery operated pump with a calibrated air flowrate of 1.0 Lpm when connected to an inline 47 mm filter holder containing a 0.8 micron Type AA Millipore filter. An area sample was collected on top of the generator employing the above collection system at 20 Lpm. Asbestos fibers on the filter greater than 5 microns in length were counted using phase contrast microscopy according to the method of Bayer and Zumwalde, US. Public Health Service. RIB UTICIN: DOW C D. Woodcock, Powerhouse J. Yount, Pow erhouse, 500 Building R. A. Gaska, Basic Ope'rations, 256 Building R. D. Olson, Incustria 1 Hygiene Services, 607 Building D. G. Egnatz, Medical, 607 Building D. J. Roberts , USA RD , 2020 Building D. Laviolette , Safety, 256 Building Industrial Hygiene Contacts Central Report Index, 566 Building 407362 0001689 ^ C P C --JC34 L STOOoI69o The following concentrations of asbestos fibers were found Sample Location Sample Time (minutes) Breathing zone, maintenance clas sification 177 On top of generator 170 Dow IHG Sample Air Volume (L) 72 33 Asbestos Fibers/cc 0.10 0.003 2.0 The above results are within the Dow Industrial Hygiene Guide (IHG) of 2.0 fibers/cc of air and employee exposures to asbestos during the application 'of the asbestos blankets were judged acceptable. 407363