| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.95(h)(5)(ii) - Whether use of an artificial ear ISO 318 coupler complies with the noise standard. |
| 2 | - 1910.95(h)(5), 1910.95(h)(5)(ii) - Whether use of an artificial ear ISO 318 coupler complies with the noise standard. |
| 3 | - 1910.95(h)(5)(i) - Quest Bio Acoustic Simulator may be used for daily audiometer checks. |
| 4 | - 1910.95(h)(5) - Audiometer calibration requirements of the March 8, 1983 Hearing Conservation Amendment. |