Wash. Admin. Code § 246-220-040
(1) Each licensee and registrant shall perform upon instructions from the department, or shall permit the department to perform, such reasonable tests and surveys as the department deems appropriate or necessary including, but not limited to, tests and surveys of:
[Statutory Authority: RCW 70.98.050. WSR 14-01-077, § 246-220-040, filed 12/16/13, effective 1/16/14. Statutory Authority: RCW 43.70.040. WSR 91-02-049 (Order 121), recodified as § 246-220-040, filed 12/27/90, effective 1/31/91. Statutory Authority: RCW 70.98.050. WSR 81-01-011 (Order 1570), § 402-12-100, filed 12/8/80; Order 1095, § 402-12-100, filed 2/6/76; Order 1, § 402-12-100, filed 1/8/69; Rules (part), filed 10/26/66.]