IMPORTANT: Respirators and other personal protective equipment (PPE) do
not substitute for feasible exposure controls.
You must: • Use feasible exposure controls to reduce exposures, as specified in Table 6.
Table 6
Exposure Control Requirements
| If: | Then you must use feasible controls to: |
| You have operations where employees clean and repair barges or tankers which have contained benzene | Keep all employee exposure concentrations below 10 parts per million (ppm). |
| You can document that benzene is used for less than thirty days a year in the workplace | Reduce eight-hour employee exposure monitoring results to a time-weighted average of 10 ppm or less. |
| Note: |
| If employee exposure monitoring results are between 1 and 10 ppm, you are permitted to use respirators or a combination of respirators and feasible controls to protect employees. |
| Employees are exposed to benzene above a PEL for at least thirty days a year | Reduce eight-hour employee exposure concentrations to the TWA8 of 1 ppm or less; |
| AND |
| Reduce fifteen-minute employee exposure concentrations to the STEL of 5 ppm or less. |
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 07-05-062, § 296-849-13020, filed 2/20/07, effective 4/1/07; 05-01-172, § 296-849-13020, filed 12/21/04, effective 3/1/05.]