Document EBZLpzk3LRnm5vMxadK48EDn
April 27,1992
Dow U.S.A.
The Dow Cherr'cal Comoa1"/ PO Box '50
PlacL.enrr'e Louisiana 70765-G'50
Daniel Cortez Eddie Guillory
Petrin Petrin
Building 4106
cc: Marty Morrison Utilities
Building 1801
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
PRODUCED FOR THE ASBESTOS DATABASE
DATE: MASTER No.
_________________
43 3$71
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DO A .1.14670 CONFIDENTIAL
ASBESTOS MONITORING DATA RESULTS: UTILmES 1902
**LOD ***LOQ
EXPOSURE GUIDELINES 8-HR. TWA LIMIT-0.20FIB/CC 30-MtNUTE LIMIT = 1.0 FIB/CC LIMIT OF DETECTION = 7 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2
DATE SAMPLE # PERSONNEL DESCRIPTION
DUR(MIN)
* LOD ***LOQ VOL(D FlBffiC FIB/CC
4/23/92
13524
*439-11-1161 Insulator: Removing damaged 90 deg. from 435# steam line. WET METHOD USED
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 loarfing criteria specified.
In the NIOSH analytical method 7400, the stated range of the method is too 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 Fibers/MM2 (Reference OSHA Std. 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 fitter area as our Limit of Detection (which is more representative of the actual fibers present) for asbestos monitoring. We wfN 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.
ij i} A L I A o / 1 CONFIDENT! Al
LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD
2sample N 13524
PLANT/DEPT.
U 4~. 'ft h e.S
MONITORING FOR:
^5
DATE, OTHER CHEMICALS PRESENT:______________
SAMPLE COLLECTION MEDIA: BADGE NO.____
TYPE.
PUMP SERIAL NO. "7 3 ( 9 ( CALIBRATION DEVICE: O-POBBLEMETER
ROTAMETER
TEMP/HUMIDITY: (REQUIRED FOR BAOGES}_
OTHER________
\y'f
CHARCOAL TUBE SIZE_________________ "flLTER CASSETTE SIZE z>C~ ffl m
SILICA TUBE
SIZE_________________
DRAGERTUBE
TYPE________________
OTHER __________________________________
PUMP FLOW RATE CALIBRATION:
BEGIN: 1. 2
3
3.
BEGINNING FLOW RATE AVG
'"Cc/MIN L/MIN
SHIFT; erSHR. 12 HR. CT"PERSONNEL SAMPLE AREA SAMPLE FULL SHIFT TWA
ENDING:1. 7
CRrTF
STEl/TASK
EMPLOYEE NAME, EMPLOYEE I.D.#_ JOB CLASSIFICATION. IH JOB CODE # CONTRACTOR COMPANY
s -He
i,'KuteJ<<-
fiv7r, __ Cqjl
3
ENDING FLOW RATE AVG. ^5~&Q I 0^CC/MIN L/MIN
SAMPLE AVERAGE FLOW RATE
TIME STARTED _ TIME STOPPED _
I'm PM
r.jo em
TOT. RUNNING TIME(MIN).
RESPIRATOR USED? *CfYES NO
RESPIRATOR MODEL / CANISTER TYPE A/Or-tf' 17U'fesrtCt SAMPLE VOLUME {AVG FLOW X RUN TIME).-2k.
MOUTH-BIT
DUST
S-HALF-FACE
FULL-FACE
AIR-LINE SCBA
_5k=
DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING
__ f'VO'ir* C/~3S~~**r
ANALYTICAL REPORT REFERENCE #
ANALYTICAL RESULTS:
O TT77r
RESTRICTED FOR USE WITHIN DOW ONLY
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VP-124
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LDQ
FORM FILLED IN BY:
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DO A 114o7 CONFTDFNTTA