You must do the following when using covers and openings:
Wash. Admin. Code § 296-800-28025
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060, and chapter 49.17 RCW. 12-16-064, § 296-800-28025, filed 7/31/12, effective 9/1/12. Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. 01-23-060, § 296-800-28025, filed 11/20/01, effective 12/1/01; 01-11-038, § 296-800-28025, filed 5/9/01, effective 9/1/01.