Table 4.
24-hr LEQ exposures results (mean, [standard deviation]) from dosimetry measurements in urban northern California
| Job title | N 24-hr meas.* | Total | Station | Calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Time
|
Noise | Time
|
Noise
|
Time
|
Noise
|
|||||||
| Hours | LEQ (dBA) | Hours | % total time | LEQ (dBA) | % total Dose | N Calls | Hours | % total time | LEQ (dBA) | % total dose | ||
| Overall | 5 | 23.7 (4.1) | 84.5 (2.4) | 22.6 (1.3) | 90.2 (5.4) | 84.0 (2.2) | 33.0 (8.3) | 8 (5) | 2.3 (1.4) | 9.8 (5.3) | 88.5 (3.5) | 67.0 (8.0) |
| Tillerman | 1 | 24.2 | 81.6 | 22.6 | 94.2 | 81.3 | 32 | 6 | 1.6 | 6.4 | 84.6 | 68.3 |
| EMT | 1 | 23.8 | 85.3 | 22.3 | 93.8 | 85.0 | 31.5 | 6 | 1.6 | 7.8 | 88.5 | 69.7 |
| Driver (1) | 1 | 23.5 | 87.3 | 21.9 | 93.0 | 86.4 | 45.8 | 6 | 1.6 | 7.3 | 93.1 | 55.6 |
| Incident scene specialist | 1 | 23.2 | 83.8 | 21.2 | 91.5 | 83.2 | 26.5 | 5 | 2 | 9.2 | 87.7 | 74.1 |
| Driver (2) | 1 | 24.0 | -- | 19.4 | 81.2 | -- | -- | 17 | 4.7 | 19.4 | -- | -- |
*
Each personal LEQ measurement represents a unique 24-hour period for a single firefighter in the measured job title