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WTC OSHA Asbestos Sampling Data for B1
Permisissible Exposure Limit (PEL): 0.1 fiber/cubic centimeter as an 8-hr time weighted average.
Excursion Limit: 1 fiber/cubic centimeter over a 30-minute period.
| DATE | Location | # of Samples | Sample Type | Fibers /cc |
| 9/14 | Greenwich & Barclay St. | 1 | Personal | 0.024 |
| 9/15 | Warren to Park and between West & Church | 1 | Personal | 0.0049 |
| 9/15 | Warren to Park and between West & Church | 1 | Personal | 0.013 |
| 9/15 | Broadway & Leonard to Liberty | 1 | Personal | 0.0045 |
| DATE | Location | Sample Type |
Fibers/cc | TEM fibers/cc |
| 9/18 | Church & Thomas to Broadway & Cortland | Personal | 0.031 | none |