Document mq4VvNDnQZO729yBkqQ8kNz4d

Usy-O-z-'? -tfYls INDUSTRIAL HYGIENE RESULTS DATE: PROJECT: July 1, 1987. Monitor insulators for asbestos exposure while using glove bags to strip T-lll in Tank Farm 4 in Silanes. DATE OF SAMPLES: SUMMARY: SAMPLE Z-9225 Z-9226 TYPE BZ BZ 4/30/87 TIME START STOP 12:54 13:34 12:57 13:34 MINUTES 40 37 RESULTS 0.14 f/cc <0.03 f/cc PEL TWA8 0.2 f/cc 0.2 f/cc DISCUSSION: RECOMMENDATIONS: During the short sample time the fiber concentrations were below the PEL TWAg of 0.2 f/cc. Sample Z-9225 was slightly above the action level. Due to the short duration of sampling neither are truly indicative of an 8 hour exposure. The insulators wore breathing air. Glove bag method was used. Share this information with insulators. Continue to request I.H. monitoring. METHOD OF ANALYSIS: DATA AND REPORT BY: ANALYSIS BY: COPY TO: Microscopy C. R. McMillan/T. L. Grittie JHM Labs D. G. Beddow.^l). A. Boggs, A. A. Cosper, E. L. Doerflein, J. K. Kyle, R. P. Leichliter, K. B. Purinton, W. V. Summers, G. W. Wulfert. TLG/le 5618A UCC 002055 WU'Cr*-/? INDUSTRIAL HYGIENE RESULTS DATE: July 1, 1987. PROJECT: Monitor Poly I control room for exposure potential to asbestos. Asbestos insulation is above the ceiling tiles and concern was expressed over the potential for a hazard to exist in the control room. DATE OF SAMPLES: 4/29/87 SUMMARY: SAMPLE Z-9221 TYPE Source LOCATION Next to crawl space near missing ceiling tile above Bailey_______________ TIME START STOP 9:20 16:10 MINUTES 410 RESULTS <0.003 f/cc PEL TWA12 0.13 f/cc Z-9222 Area Operators desk ** 98 0.01 f/cc 0.13 f/cc The pump shut off at some point during the sampling but ran for 98 minutes at the flow rate DISCUSSION: Both samples were below the TWAj^ PEL as well as the action level. RECOMMENDATIONS: METHOD OF ANALYSIS: DATA AND REPORT BY: ANALYSIS BY: COPY TO: Conduct personnel monitoring for operator spending the most time in that area. Share the above results with personnel in that area. Notify IH if the ceiling tiles are to be removed. Microscopy T. L. Grittie JHM Labs D. G. Beddow.^ti. A. Boggs, E. L. Doerflein, T. K. Ioannou, J. K. Kyle, L. P. Smith. TLG/le 5617A UCC 002056