Document 3eK6G79Br6xLYJR6GnkD0Ogbn

April 27,1992 Dow U.S.A Tne Dow Chemical Company P 0 Box ' 50 Placuem'^e Louisiana 70765-0' 50 Daniel Cortez Eddie Guillory Petrin Petrin Building 4106 cc: Allen Chauffe Poly A Building 807 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 OO A 1148?7 CONFIDENTIAL PRODUCED FOR THE ASBESTOS DATABASE OATE: 4- MASTER No. _________________ **LOD "*LOQ 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 DATE SAMPLE PERSONNEL DESCRIPTION DUB(MIN> VQUL) 4/11/82 13558 *435-98-6224 Insulator: Removing Asbestos insulation from 1" line In an enclosure WET METHOD USED 300 73 * The proper protective clothing was worn during the job. North 7700 Respirator with HEPA filters were worn during the job. ** LOD ***LOQ FIB/CC FIB/CC 0.01 <0.53 Note: Th 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 Flbers/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 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 will report both Limit of Quantitation and Limit of Detection. If only Umit 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 11 4028 CONIFTDFNTTAl E1 LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD SAMPLE N2 PLANT/DEPT. ^ MONITORING FOR:______ IZ;h>erJ> DATF ( - Q>- OTHER CHEMICALS PRESENT:______________ 13558 SAMPLE COLLECTION MEDIA: BADGE NO.____ TYPE, TEMP/HUMIDITY: {REQUIRED FOR BADGES), CHARCOAL TUBE SIZE_________________ 0*"^FILTER CASSETTE SIZE tY\ M SILICA TUBE SIZE_________________ DRAGERTUBE TYPE________________ OTHER __________________________________ SHIFT: eTSHR. 12 HR. O^PERSONNEL SAMPLE 0 AREA SAMPLE FULL SHIFT TWA STEL/TASK EMPLOYEE NAME, EMPLOYEE I.D.#_ JOB CLASSIFICATION. IH JOB CODE #______ CONTRACTOR COMPANY. dWc. jam to 4cr CCi RE5PIRATOR USED? [L?J yYeEsS O NO w RESPIRATOR MODEL / CANISTER TYPE NOr-^K IICO // MOUTH-BIT 0 DUST 0-HALF-FACE FULL-FACE 0 AIR-LINE SCBA DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING. A* ttCA JsrvtMut*. '4MjC 'tyujj/LtgdL- PUMP SERIAL NO. CALIBRATION DEVICE: __________ OBUBBLEMETER OTHER________ ROTAMETER ___PUMP FLOW RATE CALIBRATION: BEGIN: 1. 2.123X 2 no 3. BEGINNING FLOW RATE AVG. 2^Jj_t3 CC/MtN 0 l/MIN ENDING: T. 2 ~3l> 2Z2ML ENDING FLOW RATE AVG._JH2lL GfCC/MIN L/MIN SAMPLE AVERAGE FLOW RATE TIME STARTED. XsWjh**TIME STOPPED. JMM TOT. RUNNING TIMEIMIN) 3cO /HV . JASAMPLE VOLUME (AVG FLOW X RUN TIME). ANALYTICAL REPORT REFERENCE# 0.0- ANALYTICAL RESULTS: *4^0 , _________ 4oM*' * RESTRICTED FOR USE WITHIN DOW ONLY * 1 0 -0 ( AO is w-1 M IGQ (Mm FORM FILLED IN BY:. '2 J DO A 11487v CONFTDFrtTTAl