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OSHA 1910.95(m)(3) requires employers to retain noise exposure measurement records for at least 2 years. But the recordkeeping obligation for noise monitoring is broader than just the raw data—it includes the instruments used, calibration documentation, worker notifications, and the linkage between noise exposure and audiometric records. This guide covers every element required and the most common recordkeeping gaps that lead to citations.
Soundtrace automatically links noise monitoring records to employee audiometric files, satisfying the cross-reference requirement of 1910.95(m)(2)(i)(E) without manual documentation.
A complete noise monitoring record under 1910.95(m)(3) must include:
The date the monitoring was conducted. Required to demonstrate timely monitoring and to support re-monitoring schedules.
The make, model, and serial number of the sound level meter or dosimeter used. Demonstrates ANSI S1.4 Type 2 compliance.
Pre- and post-measurement calibration check results. Without calibration documentation, the measurement data may be challenged.
Name and job classification of each monitored worker (for dosimetry), or identification of the work area (for area SLM surveys).
TWA, dose percentage, and LAVG for each monitored worker or zone. Include the exchange rate and criterion level settings used.
Documentation that each monitored worker was notified of their results as required by 1910.95(e). May be a signed form or email record.
The statutory minimum is 2 years per 1910.95(m)(3). However, because each audiometric record must include the employee’s most recent noise exposure assessment, the practical retention requirement is longer. Noise exposure assessments linked to audiograms should be retained for the duration of employment.
| Record Type | Minimum Retention | Practical Retention |
|---|---|---|
| Noise exposure measurements | 2 years | Duration of employment (if linked to audiograms) |
| Audiometric test records | Duration of employment | Duration of employment |
| Calibration records | Not specified | Best practice: retain with the measurements they support |
| Worker notification records | Not specified separately | Best practice: retain 2 years minimum |
Under 1910.95(m)(2)(i)(E), each audiometric test record must include the employee’s most recent noise exposure assessment. This means there must be an active linkage between the noise monitoring database and the audiometric records system. Whenever an annual audiogram is conducted, the file must include or reference the most current noise exposure measurement for that employee.
In paper-based programs, noise surveys live in a binder in the EHS office and audiograms live in employee health files. The cross-reference between the two is almost never maintained systematically. During an OSHA inspection, an inspector who picks up an audiogram file and finds no noise exposure assessment linked to it has grounds for a recordkeeping citation under 1910.95(m)(2).
Under 1910.95(l), employers must make noise monitoring records available to employees, former employees, and their designated representatives upon request. Workers have the right to observe noise monitoring as it is conducted. Notifications under 1910.95(e) must be provided proactively to all workers whose exposure was monitored, regardless of the result.
| # | Mistake | Citation Risk |
|---|---|---|
| 1 | No linkage between noise exposure records and audiometric files | 1910.95(m)(2)(i)(E) |
| 2 | Missing calibration records for the instruments used in each monitoring session | 1910.95(h) / 1910.95(m) |
| 3 | No documentation that workers were notified of their monitoring results | 1910.95(e) |
| 4 | Monitoring results retained for only 2 years when audiograms exist for the same employees | 1910.95(m)(2) |
| 5 | Area SLM readings filed without worker classification linkage | 1910.95(m)(3) |
Soundtrace links every monitoring session to employee audiometric records, stores calibration documentation, and produces audit-ready records that include every required element under 1910.95(m).
Book a DemoGet a quote for your facility →Under 1910.95(m)(3), noise exposure measurement records must be retained for at least 2 years. However, because audiometric records must include the employee's most recent noise exposure assessment per 1910.95(m)(2)(i)(E), noise monitoring records linked to audiograms should be retained for the duration of employment.
A complete noise monitoring record must include: the date of measurement, the instruments used (make, model, serial number), calibration documentation, the names and job classifications of workers monitored, the TWA results, and documentation that workers were notified of their results as required by 1910.95(e).
Yes. Under 1910.95(l), employers must make noise monitoring records available to employees, former employees, and their designated representatives upon request. Additionally, 1910.95(e) requires employers to proactively notify all monitored workers of their results.