Document ppZonnYX2pv1djqD7D30rmN87

March 23, 1992 Dow U.S.A. The Dow Chemical Company P 0, Box ISO Plaquemme, Louisiana 70765-0150 Daniel Cortez Eddie Guillory Petrin Petrin Building 4106 cc: Billy Hood Chlorine Building 2601 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 1/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 DO A 11.4977 CONFIDENTIAL PRQQUCSD 1*0* THE asbestos database fVATK. 3 a ----------------- MASTER No. ... ASBE MQNTIQBIMG.DATA RESULTS: Chlorine 1982 **LOD ***LOQ EXPOSURE GUIDELINES 8-HR. TWA LIMIT - 0.20 FiB/CC 30-MINUTE UMIT = 1.0 FIBJCC UMIT OF DETECTION = 7 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2 DATE SAMPLE* PERSONNEL DESCRIPTION 3/9/92 13921 "435-06-2532 Insulator: Removing asbestos insulation from 6" line WET METHOD USED DUR(M1N) 30 YQUU 75 LOD Fia/cc <0.01 ***LOQ FJB/CC <0.51 * The proper protective clothing was worn during the job. North 7700 Respirator with HEPA filters were worn during the job. 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 fitter area Although samples below this range can be analyzed, the method has not been validated below 100 Flbers/MM2. However, th NIOSH method 7400 also establishes the estimated Limit of Detection as 7 Flbers/MM2 (Reference OSHA Sid. 1910.1001, Appendix B). Based on this Information, we will establish 100 Flbers/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 1.14970 CONFIDENTIAL LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD PLANT/DEPT. C. hfar,is*- / pQtO____________________ DATE 3 ~ MONITORING FOR: Ph ZT. b tsS OTHER CHEMICALS PRESENT: SAMPLE NS 13921 SAMPLE COLLECTION MEDIA: O BADGE NO. TYPE_____________________ TEMP/HUMIDITY: (REQUIRED FOR BADGES). CHARCOAL TUBE SIZE_________________ (Filter cassette size ? r fnrr? SILICA TUBE SIZE_________________ DRAGERTUBE TYPE_________________ OTHER _________________________________ SHIFT: 3"8 HR. O 12 HR. 'ERSONNEL SAMPLE AREA SAMPLE FULL SHIFT TWA STEL/TASK EMPLOYEE NAME___ EMPLOYEE I D.#____ JOB CLASSIFICATION IIHfl JJOUDB CV.OwDl/1E. #IF CONTRACTOR COMPANY r ^_____C_______ i/t/S u<o UO. RESPIRATOR USED? O^ES O NO /, RESPIRATOR MODEL / CANISTER TYPE NU* -Hi l/OQ Wf h pG MOUTH-BIT DUST 0 HALF-FACE ~ FULL-FACE AIRLINE SCBA DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING . PUMP SERIAL NO. 5T/- CALIBRATION DEVICE: &BUBBLEMETER ROTAMETER OTHER_____________________________ PUMP FLOW RATE CALIBRATION: BEGIN: 1. 3 HY-l 2- ait_T____ 3. BEGINNING FLOW RATE AVG. J- V 7% PT^CC/MIN L/MIN ENDING:!. rO-> 2. 3._ cWni hf ENDING FLOW RATE AVG. a O^C/MIN L/MIN SAMPLE AVERAGE FLOW RATE ^93 TIME STARTED '$0 ____________ TIME STOPPED 70. flip 7tm TOT. RUNNING TIMEfMINl '*>/) /fon ~ SAMPLE VOLUME (AVG FLOW X RUN TIME) ~\S" % If' jL*j - ANALYTICAL REPORT REFERENCE #, __ ANALYTICAL RESULTS: i'WJ RESTRICTED FOR USE WITHIN DOW ONLY * VP-124 r s\ FORM FILLED IN BY: _ *1 IJf O M 1 1 4 ` V / "J1 CONFIDENTIAL