Document w5DX9j20wJGzoYp0M44kgrQJ
ES1S. Inc. a CIGNA company
1341 W. Mockingbird Lon Suite 903E Danas. TX 75247 (214)631-4919
Aileen Teng
12815 Leader Houston, TX
77072
August 16, 1985
Mr. Terry Lehman Plant Manager J-M MANUFACTURING Denison, TX 75020
Re: ESIS 51-180
Dear Mr. Lohman:
On July 24, 1985, I visited your plant to conduct an Environmental Health Survey. You will find the results in the Environmental Health Report attached. This report contains the results of our survey and is an indication of the environmental health conditions that existed at that time.
I wish to thank you and your staff for the cooperation that was extended during -- the course of this visit.
If you have any questions or comments, please contact me at 713/933-1826.
Very truly yours,
Aileen Teng Certified Industrial Hygienist
AT/sh '
cc: Dr. E. Edward Wang, Ph.D. J-M Manufacturing Co., Inc. A/C Pipe Corp. 1051 Sperry Rd. Stockton, CA 95206
Ms. Beth Ingleston Alexander & Alexander of 'New York 1185 Avenue of the Americas New York City, NY 10013
AUS. 2 1 1991
D 002301
ENVIRONMENTAL HEALTH REPORT
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PREPARED FOR: J-M Manufacturing
Denison, Texas
CONTRACT NUMBER: ESIS 51-180
PREPARED BY: Alleen Teng Certified Industrial Hygienist Loss Control Services, Inc.
ACCOMPANIED BY: Tim Armstrong, Supervisor of Industrial Engineering
DATE OF SURVEY: July 24, 1985
D 002302
ENVIRONMENTAL HEALTH REPORT
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INTRODUCTION
On July 24, 1985, an industrial hygiene survey was conducted at J-M Manufactur ing, Denison, Texas to evaluate the asbestos exposure levels at three work sta tions - large coupling cutoff, small coupling cutoff, and PVC assembly. The sur vey was conducted at the request of J-M Manufacturing as part of an on-going asbestos monitoring program.
The standards, guidelines, methods, results, and discussion pertinent to this report follow.
STANDARDS & GUIDELINES
The results of this report are based on current OSHA standards and/or accepted state of the art industrial hygiene practices to give reasonable protection to the. health and well being of your employees. .
METHODS
Air sampling and analyses were conducted, using the following methods:
Air Contaminant
Vacuum Source
Flow Rate
Collection Medium
Sampling & Analyses Methods
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Asbestos
Du-Pont P-2500 sampling pumps and Gilian Model HFS-113UT sampling pumps
1.5 1pm
Open face AA filters
NIOSH P & CAM 239; PCM
1pm: liters per minute PCM: Phase Contrast Microscopy, Porton Reticle; 450 x magnification.
Samples were' collected in the workers' breathing zones to obtain samples indic ative of actual employee exposure. Sampling pumps were calibrated prior to and after the sampling period.
All analyses were performed by Environmental Health Laboratory which is accred ited by the American Industrial Hygiene Association.
RESULTS
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Results of asbestos sampling are presented in Table I.
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D 002303
TABLE I AIR SAMPLING DATA
LOCATION
AIR CONTAMINANT
UNITS
AIR CONC.
Large Coupling Cutoff Operator
Asbestos
fibers/ cc
0.21 0.24
Small Coupling Cutoff Operator
Asbestos
fibers/ cc
0.13 0.065
PVC Assembly & Molding Swing Saw Operator
Asbestos
fibers/ cc
0.039 0.033 0.046
FEDERAL STANDARD
2
2
2
TWA (1) 0.23
0.10
0.04
SAMPLE TIME
(MIN.)
203 245
230 250
77 76 240
SAMPLE VOL.
(LITERS)
COMMENTS
304.5 367.5
The TWA exposure level did not exceed OSUA permissible exposure limit.
345 375
The TWA exposure level did not exceed OSHA permissible exposure limit.
115.5 114 360
The TWA exposure level did not exceed OSIIA permissible exposure limit.
(1) T.W.A. - The Time Weighted average concentration for a normal 8 hour workday. This determination Is based on the actual exposure time to the air contaminant.
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ENVIRONMENTAL HEALTH REPORT
DISCUSSION
Air sampling was conducted to reevaluate the asbestos exposure levels at large coupling cutoff, small coupling cutoff, and molding swing saw at PVC assembly area. The asbestos levels at these areas had been found to be over the OSHA proposed standard during the previous industrial hygiene survey. Recommenda tions for controlling the asbestos levels had been submitted in the Industrial hygiene report dated April 17, 1985. As a result, the existing dust collecting system has been adjusted and maintained.
As can be seen from the sample results presented in Table I, the asbestos levels have been significantly reduced. An effective maintenance program is essential in controlling asbestos exposure. Routine inspection and maintenance of the dust collecting system should be conducted to assure that it is working properly.
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D 002305
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