Document a4k9LMdKx1KobaJgy3154Z4wN

ASBESTOS MONITORING DATA RESULTS; PIPEL1NE15>93 DATE SAMPLE # PERSONNEL DESCRIPTION 6/8/93 14539 *436-74-3503 Insulator Removing tar coating from 10" pipe **LOD ***LOQ EXPOSURE GUIDELINES 8-HR. TWA LIMIT - 0.20 FIB/CC 30-MINUTE LIMIT = 1.0 FIB/CC LIMIT OF DETECTION = 7 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2 ** LOD ***LOQ DURfMINl VOliL) FIB/CC FIB/CC 30 78 0.01 <0.49 * The proper protective clothing was worn during the job. North 7700 half-face Respirator with HEPA filters was worn during the job. Note: The Limit of Quantitation has been defined as 100 Fibers/MM2 using the minimum Tiber loading criteria specified. In the NiOSH analytical method 7400, the stated range of the method is 100 to 1300 Fibers/MM2 filter area. Although samples below this range can be analyzed, the method has not been validated below 100 Fibers/MM2. However, the NIOSH method 7400 also establishes the estimated Limit of Detection as 7 Fibers/MM2 (Reference OSHAStd. 1910.1001, Appendix B). Based on this information, we will establish 100 Fibers/MM2 filter area as our Limit of Quantitation and 7 Fibers/MM2 filter area as onr Limit of Detection (which is more representative of the actual fibers present) for asbestos monitoring. We will report both Limit of Quantitation and Limit of Detection. If only Limit of Quantitation were expressed, the minimum reportable result would calculate to be 0.04 Fibers per cc for an 8-hr. Time weighted average sample at a flow rate of 2 liters per minute and 0.6 fibers per cc for a 30 minute time weighted average short term sample at a flow rate of 2 liters per minute. ASBESTOS MONITORING DATA RESULTS: PIPELINE 1993 DATE SAMPLE # PERSONNEL DESCRIPTION 6/8/93 14538 *456-26-3737 Insulator Removing tar coating from 10" pipe WET METHOD USED *LOD ***LOQ EXPOSURE GUIDELINES 8-HR. TWA LIMIT - 0.20 FIB/CC 30-MINUTE LIMIT = 1.0 FIB/CC LIMIT OF DETECTION = 7 F1B/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2 DUR(MIN) YOL(L) ** LOD ***LOQ FIB/CC FIB/CC 30 78 0.01 <0.49 * The proper protective clothing was worn during the job. A P.A.P.R. Respirator with HEPA filters was worn during the job. Note: The limit of Quantitation has been defined as 100 Fibers/MM2 using the minimum liber loading criteria specified. In the NIOSH analytical method 7400, the stated range of the method is 100 to 1300 Fibers/MM2 filter area. Although samples below this range can be analyzed, the method has not been validated below 100 Fibers/MM2. However, the NIOSH method 7400 also establishes the estimated Limit or Detection as 7 Fibers/MM2 (Reference OSHA Std. 1910.1001, Appendix B). Based on this information, we will establish 100 Fibers/MM2 filter area as our Limit of Quantitation and 7 Fibers/MM2 filter area as our Limit of Detection (which is more representative of the actual fibers present) for asbestos monitoring. We will report both Limit of Quantitation and Limit of Detection. If only Limit of Quantitation were expressed, the minimum reportable result would calculate to be 0.04 Fibers per cc for an 8-hr. Time weighted average sample at a flow rate of 2 tilers per minute and 0.6 fibers per cc for a 30 minute time weighted average short term sample at a flow rate of 2 liters per minute. DO 0 7 5 1 7 3 OONFTDFNTTAI