Document dwd8Ya1rkd2mKoLmKnnya5Nq

June 22. 1992 Dow U.S.A 0 Daniel Cortez Eddie Guillory Petrin Petrin Building 4106 cc: Rock Gustin LHC II Building 4801 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. Industrial Hygiene Ext. 6181 Building 3502-E Attachment dsc PRODUCED FOR THE ASBESTOS DATABASE LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD SAMPLE N 1 3469 PLANT/DEPT, /_ H C JM- MONITORING FOR: //0/V > To AtAc . DATE. / -2. OTHER CHEMICALS PRESENT:. SAMPLE COLLECTION MEDIA 'BADGE NO.____ TYPE TEMP/HUMIDITY: (REQUIRED FOR BADGES), PUMP SERIAL NO. 5 CALIBRATION DEVICE: ________ StUBBLEMETER OTHER________ ROTAMETER CHARCOAL TUBE FILTER CASSETTE SILICA TUBE DRAGERTUBE OTHER _______ SIZE SIZE SIZE _ TYPE. _________ PUMP FLOW RATE CALIBRATION: BEGIN: 1. 2 C/9jr 2. ftST?4- 3. BEGINNING FLOW RATE AVG.^Z. y0 I O-'CC/MIN L/MIN SHIFT: O'BHR. 12 HR. GKpERSONNEL SAMPLE FULL SHIFT TWA STEL/TASK AREA SAMPLE ENDING: 1 2=HbJ---- 22-ij7.s:_ 3-Z-kML ENDING FLOW RATE AVG. 7 _ &<C/MIN L/MIN EMPLOYEE NAME, EMPLOYEE I.D.#__ tj___ LJsQA * Ct 06 r 3. S'J. ^L JOB CLASSIFICATION ______1* Si' 7 t C'V' IH JOB CODE # CONTRACTOR COMPANY ~7*> t/i / ^ SAMPLE AVERAGE FLOW RATE TIME STARTED / 1.' is- fJv TIME STOPPED TOT. RUNNING TIME(MIN) lb RESPIRATOR USED? KeS NO RESPIRATOR MODEL / CANISTER TYPE 7/^fA 7 PC# &//&;* SAMPLE VOLUME (AVG FLOW X RUN TIME) MOUTH-BIT DUST 9--HALF-FACE 7 ^ FULL-FACE AIR-LINE SCBA DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING ""I^r -fffiijpAfa- \1.' {_______t ?." -> - '0'" c. p/f,pS"d. I * 'ss's I// O Aj C r A f DO A 1 1 400/' f.ONF T OF NT T Al. ASBESTOS MONITORING DATA RESULTS: LHC I11092 **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 F1B/MM2 DATE SAMPLE* PERSONNEL DESCRIPTION DUR(HiN) VOUL) 5/26/92 13469 *435-06-2532 Insulator: Prepping job for removal on 10" line, exposed asbestos insulation on lines 30 75 * The proper protective clothing was worn during the job. North 7700 Respirator with HEPA filters were worn during the job. ** LOD Flfl/CC 0.01 ***LOQ Fia/cc <0.51 Note: The Limit of Quantitation has been defined as 100 Fibers/MM2 using the minimum fiber loading criteria specified. In the NIOSH analytical method 7400, the stated range of the method is 100 to 1300 Fibers/MM2 liner area. Although samples below this range can be analyzed, the method has not been validated below 100 Fibers/MM2. However, tire NIOSH method 7400 also establishes tire estimated Limit of 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 fitter area as our Limit of Detection (which is more representative of the actual fibers present) tor asbestos monitoring. We wifi 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. DO A I 1 A fi, s o 00IMF7 dfnttal