Section 296-841-20010. Exposure controls.

IMPORTANT:

• Respirators and other personal protective equipment are not exposure controls. Respirators may be used to protect employees while exposure controls are being installed or when it's not feasible to use exposure controls to remove or reduce the airborne hazard.

(1) Use feasible exposure controls to reduce employee exposure to one of the following:

– A level below the permissible exposure limits (PEL) in Table 3

– A level that removes the airborne hazard, when no PEL is established

– The lowest achievable level, when exposure cannot be reduced to below the PEL or the airborne hazard can't be removed.

(2) Make sure exposure controls don't create or increase employee health hazards. For example, when ventilation systems are installed:

– Prevent contaminated exhaust air from either:

■ Reentering the building in harmful amounts

or

■ Exposing any employee to a health hazard.

– Temper make-up air, when necessary

– Prevent employee exposure to excessive air velocities.

(3) Use make-up air systems that will not interfere with the effectiveness of the exhaust air system.

– For example, make sure enough make-up air is provided to replace the amount of air exhausted.

Note:	• Table 1 provides examples of possible exposure controls.

Table 1

Examples of Possible Controls

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 07-05-062, § 296-841-20010, filed 2/20/07, effective 4/1/07; WSR 04-18-079, § 296-841-20010, filed 8/31/04, effective 11/1/04; WSR 03-20-115, § 296-841-20010, filed 10/1/03, effective 1/1/04.]

RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 07-05-062, § 296-841-20010, filed 2/20/07, effective 4/1/07; WSR 04-18-079, § 296-841-20010, filed 8/31/04, effective 11/1/04; WSR 03-20-115, § 296-841-20010, filed 10/1/03, effective 1/1/04.