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Comparison of 8-hour TWA Exposures to Standards
| Grouping | Total Number of 8-hour TWA Exposures | Exceeded NIOSH REL/ACGIH TLV for Respirable Quartz Number (%) | Exceeded OSHA General Industry Respirable Dust PEL Number (%) | Exceeded OSHA Construction Industry Respirable Dust PEL Number (%) |
|---|---|---|---|---|
|
| ||||
| Roofers | 6 | 5 (83%) | 1 (17%) | 0 (0%) |
| Cutters/Roofers | 12 | 12 (100%) | 12 (100%) | 11 (92%) |
| All Roofers | 18 | 17 (94%) | 13 (72%) | 11 (61%) |
