Document LJqe9BaGrmay8ROG0DrJrpLX

April 27,1992 Dow U.S.A. The Dow Chemical Compary P 0 Box ' 50 Piaauemi'-e Lou-siana 70765-0'50 Daniel Cortez Eddie Guillory Petrin Petrin Building 4106 cc: Dale Crochet CAII Building 3601 Asbestos Monitoring Enclosed are sample results for potential exposure to asbestos. The OSHA 8-hour permissible exposure limit for asbestos is 0.2 f/cc >5 microns and the 30-minute short term exposure limit is 1 f/cc >5 microns. The results displayed are based on sampling duration. The data sheet shows the results of exposure using two methods, the Limit of Detection (LOD) and the Limit of Quantitation (LOQ). Included on the data sheet is an explanation of the method Limit of Quantitation. Thank you, Darlene S. Creel Industrial Hygiene Ext. 6181 Building 3502-E Attachment dsc A 1 14901 CONFTDFNTTAi'. PRODUCED FOR THE ASBESTOS DATABASE DATE: ______________ MASTER No. 435S~7 <_______________ ASBESTOS MONITORING DATA RESULTS: CAI11982 **LOD ***LOQ EXPOSURE GUIDELINES 8-HR. TWA LIMIT-0.20FIB/CC 30-MINUTE UMIT = t.O FIB/CC LIMIT OF DETECTION = 7 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2 DATE SAMPLE* PERSONNEL DESCRIPTION DUR(MIN> ** LOD ***LOQ VQL4L) FIBtfjC FIB/CC 4/16/92 13562 *433-19-6528 Insulator: Removing 3-12" nlnties from 5-404 Iron! steam heater. WET METHOD USED 30 84 0.01 <0.46 * Th proper protective clothing was worn during the job. North 7700 Ftespirator with HEPA filters were worn during the job. Not : Th Limit of Quantitation has been defined as 100 Fibers/MM2 using die minimum fiber loading criteria specified. In the NIOSH analytical method 7400, the stated range of the method is 100 to 1300 Ffbers/MM2 fitter area. Although samples below this range can be analyzed, the method has not been validated below 100 Fibers/MM2. However, th NIOSH method 7400 also establishes the estimated Limit of Detection as 7 Flbers/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 wHI 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 averse sample at a flow rate of 2 liters per minute and 0.6 fibers per cc for a 30 minute tim weighted average short term sample at a flow rate of 2 liters per minute. 1 J4 4 i. TKEnTTaiL 1 LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD SAMPLE N 1 3562 PLANT/DEPT. C >4 MONITORING FOR: hi P. bf'Z DATE OTHER CHEMICALS PRESENT:. SAMPLE COLLECTION MEDIA: BADGE NO.____ TYPE. TEMP/HUMIDITY: {REQUIRED FOR BADGES). CHARCOAL TUBE SIZE______________ ___ 9"TILTER CASSETTE SIZE <*S~ M/h___ SILICA TUBE SIZE__________________ DRAGERTUBE TYPE_________________ OTHER __________________________________ SHIFT: 9-lfHR. 12 HR. PERSONNEL SAMPLE AREA SAMPLE FULL SHIFT TWA STEl/TASK EMPLOYEE NAME. TVrtryor EMPLOYEE I.D.#_ m ' if- A JOB CLASSIFICATION. IH JOB CODE #. CONTRACTOR COMPANY. S/too*' 6^ RESPIRATOR USED? CTyES NO (Vo~sk 1700 iAj/liipa RESPIRATOR MODEL } CANISTER TYPE MOUTH-BIT DUST 0CT&T~TA3LaFi -cF.AcaCrEp / FULL-FACE O AIR-LINE SCBA DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING -JwCt*. - tyjthJ}___________ PUMP SERIAL NO.. QlQtf CALIBRATION DEVICE: OTubblemeter OTHER________ PUMP FLOW RATE CALIBRRAATTIOIOIN: BEGIN: 1. ROTAMETER 3- > BEGINNING FLOW RATE AVG. >5^5 I^CC/MIN L/MIN ENDING:!. ?/ O & 3. _ ENDING FLOW RATE AVG. ?D / 7___ 0^fC/MIN L/MIN SAMPLE AVERAGE FLOW RATE Z-fPO TIME STARTED. TIME STOPPED. (\:C?Otb* TOT. RUNNING TIME(MIN) 3t) #**>'l SAMPLE VOLUME (AVG FLOW X RUN TIME) ^ 3 C:&L --------analytical RESU^:^-^tra53o @.QL VP 124 FORM FILLED IN BY:. 00 A 114900 c OMF Tor^ijA[