1. (1) You must establish temporary or permanent exposure control areas where airborne concentrations of ethylene oxide (EtO) exceed or could exceed the permissible exposure limits (PELs) by doing all the following:

   1. (a) Clearly identify the boundaries of exposure control areas in any way that minimizes employee access.

   2. (b) Post signs at access points to exposure control areas that:

      1. (i) Are easy to read (for example, they are kept clean and well lit); and

      2. (ii) Include this warning:

         DANGERETHYLENE OXIDEMAY CAUSE CANCERMAY DAMAGE FERTILITY OR THE UNBORN CHILDRESPIRATORY PROTECTION AND PROTECTIVE CLOTHING MAY BE REQUIRED IN THIS AREAAUTHORIZED PERSONNEL ONLY

2. (2) You must keep signs and areas near them free of statements that contradict or detract from their message.

   Note:

   • This requirement does not prevent you from posting other signs.

3. (3) You must allow only authorized personnel to enter exposure control areas.

   Note:	1. When identifying the boundaries of exposure control areas you should consider factors such as:
   	a. The level and duration of airborne exposure.
   	b. Whether the area is permanent or temporary.
   	c. The number of employees in adjacent areas.
   	2. You may use permanent or temporary enclosures, caution tape, ropes, painted lines on surfaces, or other materials to visibly distinguish exposure control areas or separate them from the rest of the workplace.

4. (4) You must make sure employees entering exposure control areas have appropriate respirators available for use.

5. (5) You must prevent all of the following activities from occurring in exposure control areas:

   1. (a) Eating food.
   2. (b) Drinking beverages.
   3. (c) Smoking.
   4. (d) Chewing tobacco or gum.
   5. (e) Applying cosmetics.
   6. (f) Storing food, beverages, or cosmetics.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 18-22-116, § 296-855-20020, filed 11/6/18, effective 12/7/18. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and 29 C.F.R. 1910 Subpart Z. WSR 14-07-086, § 296-855-20020, filed 3/18/14, effective 5/1/14. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 05-17-168, § 296-855-20020, filed 8/23/05, effective 1/1/06.]