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PDFWAC 296-849-13020

Exposure controls.

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
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.
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;
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, and 49.17.060. WSR 18-22-116, § 296-849-13020, filed 11/6/18, effective 12/7/18; WSR 07-05-062, § 296-849-13020, filed 2/20/07, effective 4/1/07; WSR 05-01-172, § 296-849-13020, filed 12/21/04, effective 3/1/05.]
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