Table 8.
IOM gravimetric air sampling results by location.
| Sample Type | Location | N | <LOD <LOD |
Mean (mg/m3) | Geometric mean (mg/m3) | Geometric Standard Deviation | Minimum (mg/m3) | Maximum) (mg/m3) |
|---|---|---|---|---|---|---|---|---|
| Area | Warehouse | 20 | 16 | 0.192 | 0.131 | 2.47 | <0.26 | 0.75 |
| Roasting Room | 20 | 3 | 0.704 | 0.611 | 1.73 | <0.28 | 1.24 | |
| Grinding/Packaging Rooma | 21 | 14 | 0.254 | 0.219 | 1.76 | <0.27 | 0.72 | |
| Flavoring Room | 19 | 16 | 0.191 | 0.169 | 1.67 | <0.27 | 0.46 | |
| Quality Control Room | 4 | 3 | — | — | — | <0.27 | 0.41 | |
| Maintenance Shop | 2 | 1 | — | — | — | <0.28 | 0.50 | |
| Offices-Production | 6 | 5 | — | — | — | <0.26 | 0.38 | |
| Offices-Nonproductionb | 7 | 6 | — | — | — | <0.27 | 0.36 | |
| Outside Flavoring Room LEV Exhaust | 3 | 1 | 0.296 | 0.295 | 1.12 | <0.28 | 0.34 | |
| Personal | Warehouse (Greens Unloaders) | 10 | 2 | 4.39 | 1.07 | 6.55 | <0.27 | 14.93 |
| Roasting Room | 8 | 0 | 1.91 | 1.84 | 1.34 | 0.95 | 2.71 | |
| Grinding/Packaging Roomb | 3 | 1 | 0.443 | 0.424 | 1.44 | <0.32 | 0.59 | |
| Flavoring Room | 1 | 0 | — | — | — | 1.11 | 1.11 | |
| Quality Control Room | 1 | 1 | — | — | — | — | — | |
| All Over | 2 | 0 | 0.293 | 0.293 | 1.07 | 0.27 | 0.31 |
N = number of samples; LOD = limit of detection; Mean = minimum variance unbiased estimator of the arithmetic mean; mg/m3 = milligram per cubic meter. “—” = not detected or less than two measurements above the detection limit; “<” = less than limit of detection.
a
Only unflavored coffee production occurs here.
b
Offices-nonproduction also includes the reception area; warehouse includes the greens warehouse and finished goods warehouse; offices-production category also includes corridor, break room, and maintenance room; grinding/packaging room category also includes the tea machine and hold room.