Wash. Admin. Code § 296-809-50022
You must make sure that all entrants:
(3) Communicate with the attendant as necessary so the attendant can:
(4) Alert the attendant whenever either of these situations exist:
(5) Exit from the permit-required confined space as quickly as possible when one of the following occurs:
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and chapter 49.17 RCW. WSR 18-02-071, § 296-809-50022, filed 1/2/18, effective 2/5/18. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 15-24-102, § 296-809-50022, filed 12/1/15, effective 1/5/16; WSR 04-03-081, § 296-809-50022, filed 1/20/04, effective 5/1/04.]