Document 85YzQNYnOGOwpom9QZadXa12a

December 3, 1992 Dow U.S.A The Dow Chemical Company P 0 Box 150 PlaQuemme Louisiana 70765-0150 Daniel Cortez Petrin Building 4106 cc: Wayne Russell Cellulose Building 4501 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. Darlene S. Creel Industrial Hygiene Ext. 6181 Building 3502-W Attachment dsc -------------------- t*"\SE DO A 11.F065 CONFIDENTIAL CT . 4 i LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD PLANT/DEPT. MONITORING FOR: W-g-AvT?: >-* DATE ^ OTHER CHEMICALS PRESENT: SAMPLE N2 15 452 TEMP. 7^ DEGREE F SAMPLE COLLECTION MEDIA: BADGE NO._____ CHARCOAL TUBE 0^FILTER CASSETTE SILICA TUBE DRAGERTUBE OTHER _______ SIZE. SIZE, SIZE _ TYPE HUMIDITY T'-S" 32? TYPE SHIFT: DlO HR. 12JJR. 0^HR. 0"'pPEEIRSONNEL SAMPLE FULL SHIFT TWA STEl/TASK AREA SAMPLE /tT-2Q WIND DIRECTION EMPLOYEE NAME. EMPLOYEE I.D.#_ JOB CLASSIFICATION IiHn JJOVDB CV.O01D2EC #tf __________________________ y* r - . CONTRACTOR COMPANY LcT1-------- RESPIRATOR USED? STYES NO RESPIRATOR MODEL / CANISTER TYPE _ MOUTH-BIT DUST 77^ '"half-face FULL-FACE AIR-LINE SCBA DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING. /6 + 7^ PUMP SERIAL NO. CALIBRATION DEVICE: &6UBBLEMETER OTHER ROTAMETER PUMP FLOW RATE CALIBRATION: BEGIN. 1. 2 BEGINNING FLOW RATE AVG>^Z J O^CC/MIN L/MIN ENDING:"!. XUttU <2-434 ENDING FLOW RATE AVG. X2 Ift/f) gKcCTMIN L/MIN SAMPLE AVERAGE FLOW RATE ZjLJlL-JlT TIME STARTED P^3Z> TIME STOPPED Zf 'riD TOT. RUNNING TIME(MIN) -- `7/2 > SAMPLE VOLUME (AVG FLOW X RUN TIME) '7,7# ANALYTICAL RESULTS: * RESTRICTED FOR USE WITHIN DOW ONLY * r VP-124 FORM FILLEEDD IN BY: C DO 11DO ho COi-'IF T DFN F f 01 ASBESTOS MONITORING DATA RESULTS: CELLULOSE 1992 DATE SAMPLE# PERSONNEL DESCRIPTION 11/11/92 15452 *433-23-2653 INSULATOR: Removing 16# of broken transits 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 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2 DUR/M1N1 VOLfL) ** LOD FIB/CC ***LOQ FIB/CC 30 72 0.02 <0.53 * The proper protective clothing was worn during the job. North 7700 Half-face Respirator with HEPA filters were worn during the job. 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 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 OSHA Std. 1910.1001, Appendix B). Based on this information, we will establish 100 Fibcrs/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 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 110007 CONFIDE7NTT Al.