Document wodJnBpXj7nNG17zR3Byk5qB

June 22, 1992 Dow U.S.A. -''e Dow Cher- ; = Ccr-ca-v PC Bc< = : w '3 Q _ e? 'T r9 wOj ^"*3 J C' Daniel Cortez Eddie Guillory Petrin Petrin cc: Billy Hood Chlorine Building 4106 Building 2601 Asbestos Monitoring Enclosed are sample results for potential exposure to asbestos. The OSHA 8-hour permissible exposure limit tor 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 OOuCED FOB THE ASBESTOS DATABASE >11 2- - DO A 114900 CONFIDENT ASBESTOS MONITORING DATA RESULTS: Chlorine 1QB2 "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 DATE SAMPLE* PERSONNEL DESCRIPTION 5/7/92 13546 *433-23-2653 Insulator: Removing sandy sludge from sewer sump, which contains 5% asbestos by weight. WET METHOD 5/12/92 13452 *433-82-4840 Insulator: Cutting asbestos gaskets with shears. WET METHOD DUR(MIN) 30 VQL(L) 75 LOD FIB/CC <0.01 ***LOQ FIB/CC <0.51 30 76 0.01 <0.51 * The proper protective clothing was worn during the job. North 7700 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 Flbers/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 wit) establish 100 Fibers/MM2 filter area as our Limit of Quantitation and 7 Flbers/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 114901 CONriDFNTTAl. LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD PLANT/DEPT. .- MONITORING FOR. - F.turt. DATE OTHER CHEMICALS PRESENT sample Nl 1 3 546 SAMPLE COLLECTION MEDIA BADGE NO____ TYPE. TEMP/HUMIDITY (REQUIRED FOR BADGES). 3 CHARCOAL TUBE SIZE__________________ 3"FILTER CASSETTE SIZE__ "7*1 'hr-- SILICA TUBE 3 DRAGERTUBE OTHER . SIZE _ type. SHIFT: g-g HR. 0 12 HR 3'PERSONNEL SAMPLE FUU SHIFT TWA a STCl/TASK 3 AREA SAMPLE EMPLOYEE NAME. ,/h EMPLOYEE I D#_ JOB CLASSIFICATION. I'F'iU.tUcf IH JOB CODE . CONTRACTOR COMPANY_____ (rtc RESPIRATOR USED? CTYES O NO RESPIRATOR MODEL / CANISTER TYPE /IfewM ./ Mh*ac MOUTH-BIT O FULL-FACE 3 DUST 3 AIR-LINE 9-half-face 3 SCBA ' DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING PUMP SERIAL NO ,Jj 12 2. CALIBRATION DEVICE: &BUBBLEMETER 3 ROTAMETER 3 OTHER_____________________________ pair-PUMP FLOW RATE CALIBIRATION; BEGIN 2 72,: I lfprra.- 2.5 tS 32 3_____ BEGINNING FLOW RATE AVG.-ZjLZ_ EKCC/MIN 3 l/MIN ENDING.1. 2. ViH 3 ENDING FLOW RATE AVG '-HjO ^tt/MIN 3 L/MIN SAMPLE AVERAGE PLOW RATE 3 $C TIME STARTED 12 Vj __________ TIME STOPPED> C-L t _____________________ TOT. RUNNING TIME(MIN) Tv1 'W- SAMPLE VOLUME (AVG FLOW X RUN TIME) j^-vnOUi' T-'O'rrI Sl. jJmzt-- .Sur*,^ tkX.h S`y# ty ANALYTICAL REPORT REFERENCE # ANALYTICAL RESULTS _<4QO * RESTRICTED FOR USE WITHIN DOW ONLY * 33^-f VP-124 4 O.SI ? f(iS-D& FORM FILLED IN BY LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD SAMPLE N2 1 3452 PLANT/DEPT ___ LM'Of- * < MONITORING FOR'. F hr/'S SAMPLE COLLECTION MEDIA: 3 BADGE NO_____ TYPE. TEMP/HUMIDITY. (REQUIRED FOR BADGES). 3 CHARCOALTUBE SIZE__________________ Filter cassette sizf w?~i_ 3 SILICA TUBE SIZE__________________ 3 DRAGERTUBE TYPE.________________ 3 OTHER ___________________________________ SHIFT' 3-tfHR. 3 12 HR. O"PERS0NNEL SAMPLE 3 AREA SAMPLE 3 FULL SHIFT TWA 3 STEl/TASK DATE rnirA*- OTHER CHEMICALS PRESENT.. PUMP SERIAL NO.___ fpn CALIBRATION DEVICE gSuBBLEMETER OTHER______ 3 ROTAMETER PUMP FLOW RATE CALIBRATION: BEGIN: 1. 7 >><// -s5' Yl * ? or BEGINNING FLOW RATE AVG. . _ 3LC/VIN ENDING 1 1 3 y^u.-- .. 3 l/MIN ENDING FLOW RATE AVG. 3'S`i'l 3CC/MIN 3 L/MIN EMPLOYEE NAME. EMPLOYEE I D.#_ JOB CLASSIFICATION. IH JOB CODE # . CONTRACTOR company . V/WCT ,`u U kf-Qx Cop RESPIRATOR USED? YES 3 NO , ^ // RESPIRATOR MODEL / CANISTER TYPE FJf'rTh )1QQ___ U'/fif'Q, 3 MOUTH-BIT 3 FULL-FACE 3 DUST 9CTRALF-FACE 3 AIR-LINE 3 SCBA ' DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING. SAMPLE AVERAGE FLOW RATE TIME started . TIME STOPPED. /iv w fhn TOT. RUNNING TIME(MIN). SAMPLE VOLUME (AVG FLOW X RUN TIME). C LUjuP~ .-------------------- ----------------------------------------------------- ------- ANALYTICAL REPORT REFERENCE # J,P - 33V-) ANALYTICAL RESULTS:- 3^0--,------------------- --------------------- CL-Ol POuXft Q&-V- ,, LOD * RESTRICTED FOR USE WITHIN DOW ONLY * VM24 I L0<? FORM FILLED IN BY:. forty T 00 A 114982 CONFIDENTIAL