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INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: D. L. Johnson, 511-5518 Computer Ref. W-1040 CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 C. R. Johnson, 511-2009 D. R. Paugh, 511-2009 P. A. Perry, 511-5583 C. E. Richardson, 511-2149 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 PERSON MONITORED G. H. Landers Location #1 Powerhouse - Institutdlate 4/11/80 EXPOSURE RESULTS Sample 1 2 3 4 5 6 Cone. fibers > .35 5 gm/cm3 fibers > .42 5 pm/cm3 Sampling Time 60 minutes 105 minutes fibers > 08 5 pm/cm3 80 minutes fibers > .65 5 pm/cm3 38 minutes Comments A.M. - Stripping insulation A.M. - Stripping insulation P.M. - Stripping insulation P.M. - Stripping insulation cleaning area. Time-Weighted Average Concentration (TWA) 0.2 fibers > 5 urn/cm3 Ceiling Concentration __________________________ ALLOWABLE"EXPOSURE TWA 2 fibers > 5 pm/cm3 <^051%) Ceiling _OSHA UCC Other UCC Other COMMENTS Stripping suspected asbestos containing insulation from #2 boiler front and boiler front duct on second level of #1 Powerhouse at Institute. The last sample of the day was the highest concentration found. This may be attributed to the fact that they got in a hurry and didn't keep the insulation well wetted. Mr. Landers wore a disposable Norton dust respirator, and disposable coveralls during the stripping. UCC 024720 oo INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: D. L. Johnson, 511-5518 Computer Ref. W-1040 C. W. Carman, 725-105 G. F. Hurley, 701-334 C. R. Johnson, 511-2009 D. R. Paugh, 511-2009 PERSON MONITORED D. K. Naylor P. A. Perry, 511-5583 C. E. Richardson, 511-2149 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 Location #T Powerhouse -_______ Date Institute 4/11/80 EXPOSURE RESULTS Sample 1 2 3 4 5 Cone. fibers ^ .35 5 gm/cm: ! fibers ^ .81 5 gm/cnr ` .18 . 06 fibers ; > 5 gm/cm' * fibers : > 5 pm/cm' * Sampling Time 60 minutes 105 minutes 87 minutes 49 minutes Comments A.M. - Bagging insulation A.M. - Bagging insulation P.M. - Bagging insulation P.M. - Bagging insulation cleaning area 6 O Time-Weighted Average Concentration (TWA) Q, 3 libers > 5 |tm/cm Ceiling Concentration ALLOWABLE EXPOSURE TWA 2 fibers > 5 um/cm^ (fOSHA) Ceiling ____ ______ OSHA UCC UCC Other Other COMMENTS Bagging insulation that had been stripped from #2 boiler front and boiler front duct on second level of #1 Powerhouse at Institute. Mr. Naylor wore a disposable Norton dust respiratory and disposable coveralls during the bagging and cleanup. The insulation was placed in plastic bags for disposal and dropped from the second level to a truck below. At this point the full bags should be handled carefully It is suggested that they could be lowered on a rope to prevent the UCC 024721 INDUSTRIAL HYGIENE MONITORING FOR _______ ASBESTOS TO: D . L. Johnson, 511-5518 Computer Ref. w-1040 CC: C . w. Carman, 725-105 G . F. Hurley, 701-334 C . R. Johnson, 511-2009 .D R. Paugh, 511-2009 P. A. Perry, 511-5583 C. E. Richardson, 511-2149 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 PERSON MONITORED B. M. Beckett Location EXPOSURE RESULTS #1 Powerhouse Institute Date 4/11/80 Sample 1 2 3 4 5 6 Cone. fibers > .48 5 pm/cm ^ fibers ' > 1.24 5 pm/cm * Sampling Time 60 minutes 84 minutes Comments A.M. - Stripping insulation A.M. - Stripping insulation Time-Weighted Average Concentration (TWA) Not monitored long enough Ceiling Concentration ______to calculate TWA. ALLOWABLE" EXPOSURE TWA 2 fibers > 5 gm/cm3 (OSHA^) Ceiling ___________ OSHA UCC UCC Other Other COMMENTS Stripping suspected asbestos containing insulation from #2 boiler front and boiler front duct on second level of #1 Powerhouse at Institute. Mr. Beckett was not monitored in the afternoon because he was trans ferred to another job. During the stripping he wore a disposable Norton dust respirator and disposable coveralls. UCC 024722 INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: D. L. Johnson, 511-5518 Computer Ref. W-1041 CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 C. R. Johnson, 511-2009 D. R. Paugh, 511-2009 P. A. Perry, 511-5583 C. E. Richardson, 511-2149 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 PERSON MONITORED ______________D. K. Milan___________________________________ Location #1 Powerhouse - InstitutD&te 4/11/80 EXPOSURE RESULTS Sample 1 2 3 4 5 6 Cone. fibers > .69 5 gm/cm 3 fibers > 2.72 5 gm/cm 3 Sampling Time 68 minutes 27 minutes Comments P.M. - Stripping insulation P.M. - Stripping insulation Time-Weighted Average Concentration (TWA) Not monitored long enough Ceiling Concentration to calculate TWA. ALLOWABLET EXPOSURE TWA 2 fibers > 5 um/cm3 (JJSHa) Ceiling _________________________ OSHA UCC UCC Other Other COMMENTS Stripping insulation from #2 boiler front and boiler front duct on second level of #1 Powerhouse at Institute* Mr. Milan wore a disposable Norton dust respirator and disposable coveralls during the stripping. The insulators got in a hurry toward the end of the day and didn't keep the insulation well wetted. This resulted in the last value being higher. UCC 024723