Document G5G5ymmY5Vy9Qj8EqdXV6MgLm

DATE: PROJECT: DATE OF SAMPLES: SAMPLE 2-8874 TIME START 14:25 INDUSTRIAL HYGIENE RESULTS April 6, 1987. Monitor a pipefitter for asbestos exposure while removing an asbestos gasket. 1/16/87 TIME STOP 15:29 RESPIRATOR No RESULTS 0.035 fibers/cc DISCUSSION: RECOMMENDATIONS: METHOD OF ANALYSIS: DATA AND REPORT BY: ANALYSIS BY: COPY TO: This exposure was less than Che OSHA 8-hour Time Weighted Average Permissible Exposure Limit (PEL) of 0.20 f/cc and below the action level of 0.10 fibers/cc. Request I.H. monitoring when asbestos gaskets are being removed since we need to get more background data on such operations. Microscopy T. L. Grittie Kemron Environmental 'D. A. Boggs, E. L. Doerflein, C. A. Gorrell, W. V. Summers, Ralph Wilson, G. W. Wulfert TLG/le 5454A T. L. Grittie f UCC 002045 USV-0?-/f ^5*^ INDUSTRIAL HYGIENE RESULTS DATE: PROJECT: DATE OF SAMPLES: April 6, 1987. Monitor insulator and area near south corner o fluids lab while removing asbestos from heater. Insulator used glove bag method. 1/20/87 SAMPLE Z-8881 Z-8882 TYPE BZ A TIME START 10:33 10:35 TIME STOP 11:01 11:01 RESPIRATOR Comfo II HEPA Filter N/A RESULTS <0.032 fibers/cc 0.104 fibers/cc BZ breathing zone A = area DISCUSSION: Both results are below the OSHA permissible exposure limit TWA - 8 of 0.2 f/cc. The area sample was above the action level of 0.1 f/cc during the sampling period. However at the end of the monitoring period no further release of fibers was expected since the job was at that time completed. Therefore it can be assumed that over an 8 hour period the actual area concentration was well below the action level. RECOMMENDATIONS: Request further IH monitoring when similar jobs are being performed. Share this information with area and craft personnel. METHOD OF ANALYSIS: Microscopy DATA AND REPORT BY: C. R. McMillan/T. L. Grittie ANALYSIS BY: Kemron Environmental COPY TO: WJ". A. Boggs, E. L. Doerflein, T. W. Heiskell, J. K. Kyle, T. L. McHenry, K. B. Purintan, W. V. Summers, G. W. Wulfert. TLG/le 5452A Grittie UCC 002046 Wt/'O-L-rg (f Sy DATE: PROJECT: INDUSTRIAL HYGIENE RESULTS April 6, 1987. Monitor insulators for exposure to asbestos during che de-insulation of K-6 within the temporary negative pressure enclosure, Silanes Reactor Tower. DATE OF SAMPLES: 1/29/87 and 1/30/87 DATE SAMPLE 1/29/87 1/29/87 1/30/87 1/30/87 Z-8817 Z-8918 Z-8919 Z-8920 BZ Breathing Zone DISCUSSION: RECOMMENDATIONS: TIME START 2:35 2:36 12:53 12:57 TIME STOP 3:42 3:30 13:40 13:40 RESPIRATOR Airline Airline Airline Airline RESULTS 0.109 0.021 0.129 <0.026 TYPE BZ BZ BZ BZ All samples are below the PEL of 0.2 fibers/cc TWAg. Z-8917 and Z-8919 are above the action level for the monitoring period. Increased wetting may help. The insulators wore airline respirators during the entire monitoring period. Increase the amount of wetting agent (water) used. Continue using respiratory protection. Request further I.H. monitoring of similar tasks. Share this information with craftsmen. METHOD OF ANALYSIS: DATA AND REPORT BY: ANALYSIS BY: COPY TO: Microscopy T. L. Grittie Kemron Environmental `-'0. A. Boggs, E. L. Doerflein, J. K. Kyle, F. M. Plechaty, K. B. Purinton, W. V. Summers, G. W. Wulfert. TLG/le 5461A UCC 002047 DATE: PROJECT: DATE OF SAMPLES: SAMPLE Z-8889 TYPE BZ INDUSTRIAL HYGIENE RESULTS April 6, 1987. Monitor K-40 operator for asbestos exposure due to ambient air movement. The operator performed the regular duties of the K-40 operator. 1/22/87 TIME START TIME STOP RESPIRATOR? RESULTS 8:45 15:00 No <0.003 f/cc BZ * Breaching Zone DISCUSSION: The results (<0.003 fibers/cc) are well below the OSHA permissible exposure limit of 0.133 fibers/cc TWAj^ and also well below the action level of 0.667 fibers/cc (for 12 hours). This indicates that during a normal day the K-40 operator was not overexposed to asbestos. RECOMMENDATIONS: Request I.H. monitoring of other operators who may be concerned about asbestos exposure. This will assist in pinpointing any "trouble spots". Share this information with operators. METHOD OF ANALYSIS: Microscopy DATA AND REPORT BY: C. R. McMillan/T. L. Grittie ANALYSIS BY: Kemron Environmental COPY TO: LD. A. Boggs, E. L. Doerflein, D. L. Mullins, F. M. Plechaty, R. D. Smith, W. V. Summers TLG/le 5459A UCC 002048 U)U- o-2^?^3<*> INDUSTRIAL HYGIENE RESULTS DATE: April 6, 1987. PROJECT: Monitor Emulsion Building area as well aa an operator to determine the exposure potential due to exposed asbestos in the area. DATE OF SAMPLES: 2/4/87 SAMPLE TYPE TIME START TIME STOP RESPIRATOR RESULTS Z-8956 Z-8957 Area BZ 13:30 13:33 16:15 16:12 N/A No <0.007 fibers/cc <0.008 fibers/cc BZ * breathing zone DISCUSSION: RECOMMENDATIONS: The area sample was placed approximately 3 inches from exposed asbestos on a vibrating pipe. Both the personnel and the area samples show levels well below both the action level (0.0667 fibers/cc - 12 hour average) and the OSHA Permissible Exposure Limit (TWA12 of *133 f/cc). Where it is suspected that an exposure potential may exist, I.H. monitoring should be requested. Share these results with area operators. METHOD OF ANALYSIS: Microscopy DATA AND REPORT BY: T. L. Grittie ANALYSIS BY: JHM Labs COPY TO: "l). A. Boggs, E. L. Doerflein, D. L. Mullins, F. M. Plechaty, R. D. Smith, W. V. Summers. 2 T. Tittie TLG/le 5467A UCC 002049