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Date:
6/10/1998
JUM-10-98 WED 0,7:39
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FAX HO. 317248.7725
HILL and GRIFFITH Company
3637Farnsworth Ave, Indianapolis, Indiana 46241 1-800-428-3IQ2 * 317-241-9233 * (Fax) 317-248-7723
P.01
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HG-000031 0000^0 1
JUN-10-98 WED 07:39
HILL & GRIFFITH INDPLS
-- Jun-09-98 09:58A HG BURBANK
FAX HQ. 3172487725
330-624-0961
P. 02
P - 02
BWC Drviriojt of Safety and Hygiene 400 3nLStreet SB, 2nd Floor Crnrion, Ohio 44702-1102
April 16,1997
Hill & Griffith 29 Depot Street Burbank, Ohio 44214
MikcLawiy
On March. 17,1997 atyour request, an industrial hygiene survey was conducted at year facility. Your staffs Cooperation and support was greatly appreciated.
This report includes:
1) An executive summary;
2) Noise Information; Methods. Exposure Standards, Control Measures and PPE. Appendix A.
3) Hearing Conservation Summary, Appendix B.
4) Table I - Air Monitoring Results;
5) Air Sampling MethodologyiExposure Limits, Appendix C.
OBJECTIVE
The objective ofthis evaluation was to determine employee tirnc-wcightcd average (TWA) exposures to noise and to Respirable Silica Dust The result were compared to the OSBA nxjtrrrsiuerrts addressed to their Occupational Noise Exposure Standard, 29 CER, 1910.95 and to 29 CER. 1910.1000.
The data from a one-day industrial hygiene survey are not definitive and caution must be exorcised when interpreting them. Individual exposures can vary fbr many reasons and this inter- and intraday variability most be considered when interpreting any exposure data.
RESULTS and DISCUSSION
For both types ofmonitoring (Noise and Respirable Silica ) exposures appear lo iali wdl within acceptable exposure levels.
Noise dosimeters with a dual 90 dBA and SO dBA threshold level were used. The high 90 dBA threshold level determines compliance with the OSHA PEL of 90 dBA. The low so dBA threshold level determines the need for a Hearing Conservation. Program at S5 dBA w higher. The high threshold measurement begins measuring noise at 90 dBA and the low threshold measurement begins measuring at so dBA. Since the low threshold measurement includes noise from 80-90 dBA, aswdl as above 90 dBA, it will always be greaterthan the high threshold measurement The need to monitor Two thresholds results from differing requirements Bar the OSHA Action Limit and PEL,
All employees exposed to noise levels at ar above s5'dBA must be placed in a Hearing Conservation Program. This includes annual audkmietric tests, the availability ofhearing protection, a training program, and recordkeeping. Anyone whft a demonstrated occupational hearing loss is required to wear hearing protection at 85 dBA or above.
HG-000032
JUN-10-98 WED 07^40
HILL & GRIFFITH INDPLS
Jun-09-98 09:SSA HG BURBANK
FAX NO. 3172487725
330-6^4-0961
P. 03
P- 03
OSHA docs not mandate hearing: protection unless noise levels exceed 90 dBA. However, tho American Conference of Governmental Industrial Hygienist (ACGIH) and tie National Institute OfOcatpationaf Safety and Health (NIOSH) recommend that hearingprotection be used at or above 555 dBA.
The OSHA noise standard requires employers to use engineering or administrative controls to reduce employee exposure to 9<1 dBA or below. When this JS not feasible* OSHA requires employers to provide and employees to wear hearing protection.
CONCLUSION
Prom the results found it appears as though very little additional precautions really need to be undertaken at this
time, i would su'll suggest that employees do wear some type of an approved respirator when dusty conditions arise
front a particular task they may be performing. The same suggestion, is also recommended for ear protection that
car protection be worn for high noise areas or particular high noise jobs.
'
It was a pleasure to meet with you, and the courtesy extended was very much appreciated. If we can be offurther
assistance to you. please fed free to contact the Northeast Regional Office at 1-800-828-1723 or (2 Id) 573-7200,
Sincerely,
Ren Kmchan
Industrial Hygienist
Enclosures
Table of Results <TaWes tA2) Appendix A - Noise Information: Methods, Exposure Standards, Control Measures, and PPE. Appondix B - Hearing Conservation Summary.
HG-000033